Broadcast Channel
One solution, several tabs
Send messages between tabs
The best way to send messages between browser tabs
What you will learn
The entiery API, in 4 lines of code
Transforming a solution into a multi tab application
Especially at work
One tab, one solution
Fill
Fill
Fill
Fill
Case management systems 📑
List of cases
Case details
Case history
Case actions
Case map
All in one tab
Running out of screen real-estate
Splitting screen into pages is slower
Want to view it all?
The solution?
The BroadcastChannel API
const channel = new BroadcastChannel('test_channel');
channel.onmessage = function (message) { console.log(message.data); }
channel.postMessage('This is a test message');
channel.close();
That's it!
Multicasting
Same origin only
| example.com |
✔ |
| example.com/subroute |
✔ |
| blog.example.com |
❌ |
| example.com:1337 |
❌ |
| vg.com |
❌ |
Works on localhost
Same scheme, host and port
Same computer🖥 and browser
BroadcastChannel has low priority
Delayed when the tab under heavy load🔥
Can't send and receive the same message
No need to filter out own message
Need to remember while debugging
Don't know who sent the message
Don't know who received message
Need to handle it yourself
Browser support
Can polyfill
Alternatives
Local storage -> best browser support 👍
Channel Messaging API -> only iframe 👎
Shared Worker -> More messy 👎
Can be achieved with a backend
Significantly harder
Higher complexity
Using the BroadcastChannel API is easier
100% frontend solution
Make it an alternative
Not everyone has several screens 🖥🖥
Not everyone wants a multi tab solution
Consider wrapping
For example with RxJS
Will provide in next video
Subscribe for part 2 📺
Advanced Broadcast channel API
With RxJS and Angular


Library Name
Date created
Library 1
12/10/2017
Library 2
12/10/2017
Library 3
12/10/2017
Library 4
12/10/2017
Library 5
12/10/2017
Library 6
12/10/2017
Library 7
12/10/2017
Delete selected
Empty Trash


Brett Zamir
on 2011-07-20 03:36:59
In addition to my post just now, there is also the possibility of ECMAScript itself supporting the more advanced syntax (not sure if they would for reasons of backward-compatibility).
Brett Zamir
on 2011-07-20 03:35:47
@Jon. L: Yes, that's true--I guess you are talking about the fact that we escape "<" and ">"? Yeah, those could be removed, but 1) It is harmless to escape them, 2) Safer to behave like PHP in case someone is passing something back to PHP, 3) I'm hoping at some point for us to port and build upon XRegExp so that our library does support the full PCRE syntax.
Jon L.
on 2011-07-15 18:37:30
PHP regex (PCRE) and JS regex (ECMA) are not 100% compatible:
http://www.regular-expressions.info/refflavors.html << see chart for differences.
Kevin van Zonneveld
on 2008-04-13 12:18:46
@ ?: Hi, thanks for the contribution. There are some things that keep me from including this in php.js. Firstly I don't know your name so I cannot credit you, Secondly, I don't know if the perl regular expressions are 100% compatible with the javascript regex engine. Do you know this?
Simple preg_replace_callback
on 2008-04-12 08:33:47
function preg_replace_callback(reg, cbck, str){
return str.replace(REGEXP, function(arguments){return window[cbck](arguments);});
}
Kevin van Zonneveld
on 2008-01-23 20:20:44
@ Ates Goral: Kaizen principles FTW
Ates Goral
on 2008-01-23 17:58:31
After looking at the implementation of addslashes(), I realized that this could have been simply achieved with:
return str.replace(/([\\\.\+\*\?\[\^\]\$\(\)\{\}\=\!\<\>\|\:])/g, "\\$1");
I don't know why I chose to use a replacement function in the first place :)
Kevin van Zonneveld
on 2008-01-23 08:31:52
@ Ates Goral: There you go, 2 gold medals :)
Ates Goral
on 2008-01-23 03:37:40
Here's my take:
function preg_quote(str) {
// * example 1: preg_quote("*RRRING* Hello?");
// * returns 1: "\\*RRRING\\* Hello\\?"
// * example 2: preg_quote("\\.+*?[^]$(){}=!<>|:");
// * returns 2: "\\\\\\.\\+\\*\\?\\[\\^\\]\\$\\(\\)\\{\\}\\=\\!\\<\\>\\|\\:"
return str.replace(/[\\\.\+\*\?\[\^\]\$\(\)\{\}\=\!\<\>\|\:]/g, function(c) { return "\\" + c; });
}


{% extends "base.html" %} {% block head_title %}Loaned Assets || {{ block.super }}{% endblock head_title %} {% block content%} {% include "_modal.html" %}
| # | Reserved Asset | Supplier Out | Receiver Out | Pickup Date | Pickup Time | Read / Update / Delete |
|---|---|---|---|---|---|---|
| {{ forloop.counter }} | {{ loanedasset.reservedasset }} | {{ loanedasset.supplier_out }} | {{ loanedasset.receiver_out }} | {{ loanedasset.pickup_date }} | {{ loanedasset.pickup_time }} |
No loanedassets added yet.
{% endif %}


Results
London OOH Service Wait time: 2h 35m GP OOH
St Pancras Hospital, 4 St Pancras Way
Open now
Full opening hours
| Monday | 00:00 - 07:59 | then | 19:00 - 23:59 |
| Tuesday | 00:00 - 07:59 | then | 19:00 - 23:59 |
| Wednesday | 00:00 - 07:59 | then | 19:00 - 23:59 |
| Thursday | 00:00 - 07:59 | then | 19:00 - 23:59 |
| Friday | 00:00 - 07:59 | then | 19:00 - 23:59 |
| Saturday | 00:00 - 23:59 | ||
| Sunday | 00:00 - 23:59 | ||
| Public Holidays | 00:00 - 23:59 |
More information
St Pancras Hospital, 4 ST PANCRAS WAY, LONDON, NW1 0PE
REFERRAL CRITERIA:
Service is available to registered and unregistered patients residing within the London boroughs of Barnet, Enfield, Haringey, Camden and Islington.
This service accepts direct booking. Please follow instructions within Adastra to book appointment. If you get a warning sign that appointments are full, please reject and click on one of the NCL IUC Clinical Hub Contact DoS options.
If there is an operational problem, 111/IUC staff can contact the LCW Supervisor Line on 03000 339 910.
EXCLUSIONS:
Patients not residing within north central London.
London OOH Service Wait time: 2h 35m GP OOH
St Pancras Hospital, 4 St Pancras Way
Open now
Full opening hours
| Monday | 00:00 - 07:59 | then | 19:00 - 23:59 |
| Tuesday | 00:00 - 07:59 | then | 19:00 - 23:59 |
| Wednesday | 00:00 - 07:59 | then | 19:00 - 23:59 |
| Thursday | 00:00 - 07:59 | then | 19:00 - 23:59 |
| Friday | 00:00 - 07:59 | then | 19:00 - 23:59 |
| Saturday | 00:00 - 23:59 | ||
| Sunday | 00:00 - 23:59 | ||
| Public Holidays | 00:00 - 23:59 |
More information
St Pancras Hospital, 4 ST PANCRAS WAY, LONDON, NW1 0PE
REFERRAL CRITERIA:
Service is available to registered and unregistered patients residing within the London boroughs of Barnet, Enfield, Haringey, Camden and Islington.
This service accepts direct booking. Please follow instructions within Adastra to book appointment. If you get a warning sign that appointments are full, please reject and click on one of the NCL IUC Clinical Hub Contact DoS options.
If there is an operational problem, 111/IUC staff can contact the LCW Supervisor Line on 03000 339 910.
EXCLUSIONS:
Patients not residing within north central London.


All Classes
-
Interface Summary Class Description Alias Amazon https://billing.roblox.com/docs#!AppChatPrivacy https://accountsettings.roblox.com/docs#/PrivacySettingsApple https://billing.roblox.com/docs#/AppleAppPresence Asset AssetAvatar Assets Authentication https://auth.roblox.com/docs#/AuthenticationAvatar https://avatar.roblox.com/docs#!Avatar Badge BadgeAwards https://badges.roblox.com/docs#!Badges https://badges.roblox.com/docs#/BadgesBadges Batch https://assetdelivery.roblox.com/docs#!BuildersClubCancellation BundleCatalog https://catalog.roblox.com/docs#/BundleBundleMetrics Bundles CatalogCategory https://catalog.roblox.com/docs#/CategoryChatSettings https://chat.roblox.com/docs#!ContactUpsell https://accountsettings.roblox.com/docs#/AccountInfoSettingsConversation CountryRegion Credentials https://auth.roblox.com/docs#/CredentialsCurrency DeveloperProduct Email https://accountsettings.roblox.com/docs#!ExclusiveCatalog https://catalog.roblox.com/docs#/ExclusiveItemsFavourite FriendRequests Friends Game Gamecard https://billing.roblox.com/docs#/GamecardGameChatPrivacy https://accountsettings.roblox.com/docs#/PrivacySettingsGameLocalizationRoles GamePass GamePass GamePasses Games GameTemplates GameThumbnail GameUpdateFilter GameUpdateNotification Google https://billing.roblox.com/docs#/GoogleGroup GroupEmblem GroupManage GroupUniverse Inventory InventoryPrivacy https://accountsettings.roblox.com/docs#!Language Locale Membership Membership Message Metadata NameDescription NearbyVerifiedFriends Notification NotificationStream OnlineFriends Outfit https://avatar.roblox.com/docs#/OutfitsParty Password https://auth.roblox.com/docs#/PasswordsPasswordReset https://auth.roblox.com/docs#!Payment https://billing.roblox.com/docs#/PaymentsPermission Place PlaceStatistic Plugin Points PremiumFeaturesProducts PrimaryGroup Privacy https://accountsettings.roblox.com/docs#/PrivacySettingsPrivateMessagePrivacy https://accountsettings.roblox.com/docs#!PushNotification QRVerifiedFriends RecentItem https://avatar.roblox.com/docs#/RecentItemRecommendedUsers Saml https://auth.roblox.com/docs#!Signup https://auth.roblox.com/docs#/SignupSocialLink SourceLanguage StudioData TeamCreate ThumbnailMetrics TradePrivacy https://accountsettings.roblox.com/docs#/TradeSettingsTradeValue https://accountsettings.roblox.com/docs#/TradeSettingsTwoStepVerification https://accountsettings.roblox.com/docs#/TwoStepVerification https://auth.roblox.com/docs#/TwoStepVerificationUniverseBadges UniverseSettings UserAvatar UserBadges UserContacts UserFollowing Usernames https://auth.roblox.com/docs#/UsernamesUserOutfit UserPresence UserSubscriptions UserUniverse VersionCheck VipServer Vote Wall Xbox https://accountsettings.roblox.com/docs#/XboxXsollaNotification https://billing.roblox.com/docs#/NotificationsXsollaPayments https://billing.roblox.com/docs#/XsollaPayments


--- layout: null section-type: default title: Research ---
|
Scalable Centralized Deep Multi-Agent Reinforcement Learning via Policy Gradients
Submitted to Neural Information Processing Systems (NIPS), 2018 A. Khan, C. Zhang, D.D. Lee, V. Kumar, A. Ribeiro |
|---|
|
Learning Sample Efficient Target Reaching for Mobile Robots International Conference on Intelligent Robots and Systems (IROS), 2018 A. Khan, V. Kumar, A Ribeiro |
|---|
|
Memory Augmented Control Networks International Conference on Learning Representations (ICLR), 2018 A. Khan, C. Zhang, N. Atanasov, K. Karydis, V. Kumar, D.D. Lee |
|---|


It was the summer before gr 11 and i had just gotten my own car. It was time for a road trip. Me and 5 other friends went to peach fest (an annual festival in penticton, bc, canada). Peach Fest involved 10,000 young people going camping (or hoteling for the weaker)to a small town of interior BC and losing all inhibitions. Nothing was planned except for tents, sleeping bags, a little food and some water.
Before leaving one of my friends said he had some mushrooms to sell to me for $20. He had had an incident a few months back on them that had him fighting a couple of friends, breaking down and crying like a little baby, and vowing to never eat mushrooms again. I had smoked quite a bit of pot in my day, but mushrooms was something i'd always thought about trying and never did. So I bought for $20 roughy 8 grams of muschrooms, one half of which had been crushed to powder sometime during that night he spoke of.
 After setting up the tent it was already 8 at night and it was time for something to be happening. So i popped 7 grams of the mushrooms with some beer and waited for the effects. Mushrooms were a foreign idea to me at the time. 7 grams didn't mean anything. My friends who had some experience but very little didn't tell me anything about them or how much to take. They thought i'd just aten a small palmfull. I knew they made you hallucinate a bit, but that was all. With some rum and daquiri mix (without ice and don't ask me why we were drinking it) we headed to the strip of downtown penticton. The mushrooms had begun to take effect.
My stomach had been bothering me for about a half hour. I thought it was just the terrible alchohalic mix i was drinking. The first thing that hit me was confusion. Where are we going? What are we doing? Why can't i find anything in my pockets? I soon became very aware of the awkward materiel of the clothes that i was wearing.  By the time we'd hit downtown (acually clock time had lost all meaning to me by now so i couldn't say exactly how long it was till i started peaking) i was beginning to peak.
We all had our own seperate missions to complete before the night could get going. I myself was already on my mission. Finding out what was really happening to me. I followed one friend while the other 3 split to get more beer. I would later find out that splitting up wasn't a really good idea. I lost my friend within minutes. A family coming out of a restaraunt asked me the time. I must have looked like a psychopath when i looked up at them, and tried to figure out who they were and how did i know them? Of course i'd never seen them before, but in this state i almost couldn't recognize myself. So i just blurted out some inchorent statement about nothing, laughed, and continued on my way. The pavement was no longer pavement, but a patterns on top of patterns of dead leaves sand and rocks.
Suddenly i could hear the friend that i'd lost yelling for me. So i started to yell for him because i couldn't for the life of me figure out what direction the yelling was coming from. Later i learned that was becuase there was noone trying to call me. Across the street something caught my eye that abruptly stopped my yelling. A vided mural on the wall that was attemting to brithgten up the town was moving. The technicolor trumpet player stepped away from the wall a bit and his trumpet was now pointed toward me. Little people or something vaguely representing them in multicolors were flowing from the wall and crawling into the end of this mans trumpet. I knew i was on mushrooms, but couldn't believe that it was just the drugs causing this surreal momment.
Luckily for me my friend came by an unknown amount of time later and shook me. I turned at him and asked him why he couldn't see what i was seeing and then he asked me how much of the bag i'd eaten. I told him and he let me in on the fact that i'd eaten quite a lot compared to the norm and that was why i was hallucinating so much. Then i asked him 'didn't we just have this conversation'. I learned then too the de ja vu effect was also from the mushrooms and that we hadn't. I would experience this several times before the end of the night.
I soon lost my friend again and forgot where i was supposed to meet him and everyone else and at what time. I soon found myself in what i thought was a graveyard (again don't ask me why) and fell down. The sky had turned on me. The clouds were forming words and scentences that i couldn't read against the starlit night sky. Who was trying to speak to me, and what are they trying to say? Then the biggest trip of all happened.
One of the friends i went on the trip with was a little person.   It turned out i was lying on the front lawn of the town police station and had been laughing quite loudly for sometime with nobody around me.
My bud lead me around the back of the cop station where some friends were drinking beer on a park bench. I was sure the gig was up. Cops had camera's on us and had just been collecting information. Any minute swat teams were going to swing down from the trees.  All the police officers were out patrolling due to the usual problems they have with this festival every year.
We headed to the beach and soon we were surrounded by people, most of them drunk and having a good time. Myself on the other hand was having a hard time trying to figure out who's face it was on this giant peach.  The sudden huge numbers of people was suprisingly not that hard to deal with, most likely because i knew somehow that they were all fucked and wouldn't notice me tripping in my own little world.
The next few hours would be countless hallucinations and distortions that i kept having to clarify with my companions to make sure they weren't real. It was definatly a night i will never forget. Since i have tried many other varieties of mush rooms (in smaller dosages but still enough) although i still don't know what kind it was i did this paticular night. I have also learned to research new drugs a little before doing them alhtough i must admit not knowing whats coming to you is a whole other trip.
peace all
Experience Reports are the writings and opinions of the individual authors who submit them.
Some of the activities described are dangerous and/or illegal and none are recommended by Erowid.


THE BIG HIT 1998 A film review by Timothy Voon Copyright 1998 Timothy Voon 3 :-( :-( :-( for the big miss
Cast: Mark Wahlberg, Lou Diamond Phillips, Christina Applegate, Avery Brooks, Lela Rochon, Bokeem Woodbine, China Chow, Lainie Kazan, Elliot Gould Director: Che-Kirk Wong Producers: Warren Zide, Wesley Snipes Screenplay: Ben Ramsey
Someone should have warned the producers of this movie, not to cast two ex-Calvin Klein models and a Federation Starfleet Captain in the same movie, under the direction of a Hong Kong action flick director. The end result is a pretty big mess filled with smart mouthed, pretty boys playing with guns, with little idea of where to put their heads and when to put on their pants.
I'm referring to the dressing scene where Lou Diamond Phillips, Mark Wahlberg and Antonio Sabato Jr., bare butts and skin for the world to see. As if Mark Wahlberg's ending fiasco in BOOGIE NIGHTS, wasn't enough to define what is not considered the norm for that particular male appendage! One can feel male egos soar and testosterone drip as each tries to show off how great they look and how firm their muscles are. If there were to be a winner - Sabato Jr is undoubtedly the better model in Kleins.
So where did this go wrong, except for the fact that they hired models instead of actors? Well, Mark Wahlberg has started an annoying trend of playing idiosyncratic ‘love-me, I'm so cute' roles (not as annoying as David Schwimmer). I have to admit that the opening action scenes are well choreographed and amongst the best this year. However, the rest of the movie is tediously weighed down by a spineless Wahlberg, a slutty (unintentional) Applegate, an overactive Diamond Phillips, a ‘pin me up' Sabato Jr and a kidnapped Japanese girl.
The BIG HIT is a big mess and deserves a big miss.
Timothy Voon e-mail<EMAIL_ADDRESS>Movie Archives http://us.imdb.com/M/reviews_by?Tim+Voon Hugues Bouclier's Movies in Melbourne http://www.labyrinth.net.au/~bouclier/week/movies.html
The review above was posted to the
rec.arts.movies.reviews newsgroup (de.rec.film.kritiken for German reviews).
The Internet Movie Database accepts no responsibility for the contents of the
review and has no editorial control. Unless stated otherwise, the copyright
belongs to the author.
Please direct comments/criticisms of the review to relevant newsgroups.
Broken URLs inthe reviews are the responsibility of the author.
The formatting of the review is likely to differ from the original due
to ASCII to HTML conversion.
Related links: index of all rec.arts.movies.reviews reviews


You need to enable JavaScript to run this app.
Return calendar year:
Return calendar month:
>_
@pix8/Calendar
A fast simple provider of the Gregorian calendar with arrays and numbers
Enter a date


Spotted! Priyanka Chopra steps out in the comfiest outfit ever
by FilmfarePriyanka Chopra is a true style icon in every sense of the word. Known for her exquisite sense of style, the actress is always making heads turn with every appearance. Be it the MET Gala, Cannes Film Festival or the airport the actress has had many power fashion moments this year itself.
Taking a break from her glamourous avatar, Priyanka was spotted in Mumbai with her mother Madhu Chopra today. The actress looked simple yet stylish with a blue denim jacket and a pair of black jeans. She was sporting a red lip and completed the look with black sunnies. Classic and casual, Priyanka sure made this chic ensemble work as an off-duty outfit.
Take a look.


Q: White Screen
A: Visit the website instead of displaying it in a embed. This could also be a issue with your browser, internet or device.
Q: Game is slow/unresponsive
A: Get out of McDonalds.
Q: When are you gonna port new games to JavaScript / When is Mobile Support releasing?
A:
Q: Is the code stolen?
A: Kinda. The code for the ROM is from @n64decomp on GitHub and then the player was built using Emscripten. You expect me to write the SM64 Game along with thousands of lines of code from scratch? No.
Q: How do I play?
A: Read the controls page.


Next: make-concatenated-stream, Previous: make-echo-stream, Up: Streams Dictionary
concatenated-stream-streams
concatenated-stream ⇒ streams
concatenated-stream – a concatenated stream.
streams—a list of input streams.
Returns a list of input streams that constitute the ordered set of streams the concatenated-stream still has to read from, starting with the current one it is reading from. The list may be empty if no more streams remain to be read.
The consequences are undefined if the list structure of the streams is ever modified.


Sherlock Holmes
Aesop's Fables
Alice in Wonderland
Gulliver's Travels
Bubble Cloud
The most frequently used words in:


Copy and Paste can be extremely useful. Other tools to help may include
Windows
upx (for compression)
exe2hex (and then use debug to recreate)
exe2bat
exe2py
exe2powershell
Linux
base64 encode (paste and pipe to base64 -d > outfile)
xxd in and xxd out
Cross platform
pyinstaller


Home
Comment
Snake Game
Welcome!
This is my website, I hope you like it. (There will be more updates coming to this website very soon.)
Comment if you like this.


Welcome to Hangban!
Play Game
What's your guess?
Oh no! You're wrong :(
Good job!! You're right!!!
Hey... you already guessed that
Yay!!! You're winner :)
Play Again
Oh darn... You're ded
Try Again
The word was:
Bad Guesses
a
b
c
d
e
f


Main Menu
Backend developer at Annertech
Contributor at Drupal project
Twitter: @martianwebdev
Github: fuzzbomb
W3C Web Acessibility Initiative (WAI)
Web Content Accessibility Guidelines 2.0 (WCAG)
"POUR"
WCAG is organized as a set of success criteria, each describing an accessibility practice in terms of:
Example: SC 1.3.1 Info and Relationships describes the use of headings and labels to indicate the structure of a page.
... because this talk is for JS developers!
... because there isn't time,
... but these things are still important topics.
Note: content authors/editor's decisions are just as important as designers and developers.
Actually, I love talking about this. Just not today.
Let's start with an inaccessible example,
then see how we can improve it.
We'll make a mobile menu button - a.k.a "Burger Menu"
Git repo: fuzzbomb/mobile-menu-a11y-demo
Improvements made during these slides are marked as git tags, which we'll refer to as we go along.
A working demo of the finished menu widget is also available.
Our button is a
, and our menu is a list of links.
Main Menu
Bind a click handler to our
 to toggle menu visibility.
$(document).ready(function() {
// Initialize.
var menuDisplayed = false;
$('#main-menu nav').hide();
// Add the open/close behaviour.
$('#main-menu-button').click(function(event) {
if (menuDisplayed === true) {
$('#main-menu nav').hide();
menuDisplayed = false;
}
else {
$('#main-menu nav').show();
menuDisplayed = true;
}
});
});
"Works with a mouse"
Just a few simple controls.
Not necessarily using assistive-technology
Might be a plain-old QWERTY keyboard.
Sighted keyboard users really need to be sure what element has focus, before they press enter.
Subtle focus styles don't work - they need to be clear. Beware of re-using mouse hover styles.
This doesn't limit your creativity - take inspiration from games consoles and Smart TV.
Allows quick access to interact with the page's main content, without traversing lots of sidebar links, or a header menu.
Who benefits? Primarily sighted keyboard users. (Screen-readers offer other ways to get around a page.)
Off-canvas != Off-viewport
Be careful. Elements rendered off-viewport can be
a help or a hindrance...
Good:
"Invisible" labels are still accessible to screen-readers.
Bad:
Focusable elements are traversed by sighted keybpoard users, who can't tell what is in focus.
The menu widget we have built does not work for keyboard users at all. The expected behaviour is:
Main Menu
// ... list of menu links
Add a tabindex=0
attribute to our
.
Keyboard focus is now possible, but the button
does not yet respond to keypress.
#main-menu-button {
background-color: #444444;
color: #ffffff;
}
#main-menu-button:focus {
background-color: #ffffff;
color: #444444;
}
Use CSS to make it very obvious that the button has focus.
In this example, we invert the colour contrast.
Avoid styles which are too subtle.
$('#main-menu-button')
.keypress( function(event) {
// Only respond to enter or spacebar keys
if (event.which == 13 || event.which == 32) {
// Spacebar usually triggers page scrolling.
event.preventDefault();
$(this).trigger('click');
}
})
.click(function(event) {
// The open/close behaviour
// ...
});
Listen for keypress event, confirm which button was pressed, and trigger a click() event.
"Works with a keyboard"
Whoah. Learning curve.
Be kind to your colleagues :-)
Many ways to navigate or inspect a page...
WebAIM Screenreader user survey

main, banner, contentinfo, navigation,
complementary, search, ...
New HTML5 elements - main, header, footer, nav, aside.
Re-cap. We already know this stuff...
Attributes which often contain rich semantics, but are really only useful to a human audience: developers!
None are understood by screen-readers.
We want machine-readable semantics
HTML is NOT a user interface language.
ARIA provides vocabulary of UI roles, states, and properties.
They express the range of interaction found in native Desktop and Mobile UI widget APIs.
Formal, machine-readable semantics.
Host-language semantics are preferred.
Use sparingly!
Aim to provide a screenreader user with an idea of
what the button can be used for.
We were hiding the text label with CSS display:none (which prevents screenreaders from finding it) so we'll remove this.
-#main-menu-button span {
- display: none;
-}
The visuallyhidden class (from HTML5 Boilerplate) uses clip and overflow properties to hide the text in a 1px square box.
Main Menu
Now a screenreader can announce the button name.
Main Menu
Adding role=button
to the
 overrides the default HTML semantic, so screenreaders can announce it as a "button" (or sometimes "clickable").
We'll use two ARIA attributes in tandem. Note that both of these attributes need to go on the button element itself.
aria-controls
indicates a relationship betweenaria-expanded
indicates whether the list isaria-controls
propertyaria-controls needs an ID to refer to.
Main Menu
$('#main-menu-button')
.attr('aria-controls', 'main-menu-nav')
.keypress( function(event) {
/* Handle keypress */
})
.click(function(event) {
/* The open/close behaviour acts on '#main-menu nav' */
});
aria-expanded
state$('#main-menu-button')
.attr('aria-controls', 'main-menu-nav')
.attr('aria-expanded', false) // NEW, initialize
.keypress( function(event) { /* Handle keypress */ })
.click(function(event) {
if (menuDisplayed === true) {
$('#main-menu nav').hide();
$(this).attr('aria-expanded', false) // NEW
menuDisplayed = false;
} else {
$('#main-menu nav').show();
$(this).attr('aria-expanded', true) // NEW
menuDisplayed = true;
}
});
We initialize aria-expanded as false, to match the initial appearance of the menu, and update it whenever we show or hide the menu.
"Works with a screenreader"
Git tag: milestone-works-with-mouse-keyboard-screenreader (ad3fa57)
We actually broke the golden rule of ARIA. Avoid using ARIA semantics to provide a role, where HTML already provides the role with an equivalent element.
In our case we used:
When we ought to have used:
After replacing the
 with a real HTML <button>, we can remove a few things to simplify the code...
TL;DR... a11yproject.com
A community-reviewed set of practical tips, with a gentle learning curve. If you only read one thing from my reading list, make it this website.
In fact, you might do better perusing their resources list ;-)
A short open-source book which gives a great introduction to thinking about accessibility, along with techiniques.
Particularly useful for introducing personas when considering accessibility. For every technique, it has a discussion of who benefits, and how.
It's starting to look a little dated (19" is a large monitor!), and a few techniques have changed, but few books match this one as an introduction to the topic.
The End
Slides: fuzzbomb.github.io/js-a11y-intro-slideshow
Demo code: github.com/fuzzbomb/mobile-menu-a11y-demo


Changelog
See what's new added, changed, fixed, improved or updated in the latest Space versions.
Read this before updating
Do not forget to backup your files and read the changelog before updating your Space copy. If you come across with any problems with Space template during the update and development processes, feel free to contact our support group at htmlstream.com/contact-us and our team will assist you within a short time.v2
- 09 August, 2021
Space v2.0 is a major rewrite of the entire template with new a design system. Fully designed with Figma and built on top of the latest Bootstrap v5. Hence, the migration from v1.x
to v2.x
is not possible. Below are most notable changes made in Space v2.0.
- Design - All pages are designed from scratch with a new fresh look.
- Figma - Space v2.0 was designed in Figma and included as a complementary.
- Bootstrap v5 - Built on top of the latest Bootstrap v5
- JavaScript - All scripts are fully rewritten from scratch in pure JavaScript without jQuery.
v1.6.1
- 29 November, 2019
Enhanced
SASS file structure
Updated
Bootstrap from
v4.3.1
to v4.4.0
Updated
gulpfile.js
from v3.9.x
to v4.x
Updated
package.json
List of dropped HTML-files
html/home/creative-start-up.html
html/home/modern-start-up.html
v1.6
- 12 November, 2019
New
Job demo
New
Feather Icons
Enhanced
Real estate demo
List of dropped scss-files/folders
assets/scss/space/_variables.scss
assets/scss/space/_space.scss
assets/scss/space/utilities/_bg-colors.scss
assets/scss/space/utilities/_bg-overlay.scss
assets/scss/space/utilities/_borders.scss
assets/scss/space/utilities/_gradients.scss
assets/scss/space/utilities/_link-colors.scss
assets/scss/space/utilities/_opacity.scss
assets/scss/space/utilities/_text-colors.scss
v1.5
- 15 August, 2019
New
Real Estate demo
New
Wizard component
Updated
FontAwesome from
v5.9.0
to v5.10.1
Updated
jQuery from
v3.3.1
to v3.4.1
List of dropped scss-files/folders
assets/include/scss/space/_variables.scss
assets/include/scss/space/_space.scss
assets/include/scss/space/icons/_icon-size.scss
assets/include/scss/space/utilities/_borders.scss
assets/include/scss/space/utilities/_gradients-overlay.scss
assets/include/scss/space/utilities/_sizing.scss
assets/include/scss/space/utilities/_text.scss
assets/include/scss/space/utilities/_text-colors.scss
v1.4
- 29 July, 2019
New
Hotel demo
New
Stockholm Icons
New
Flatpicker
Fixed
Some issues with some type of gradients in Safari
Updated
FontAwesome from
v5.8.1
to v5.9.0
List of dropped scss-files/folders
assets/include/scss/space/_variables.scss
assets/include/scss/space/_space.scss
assets/include/scss/space/address/_address.scss
assets/include/scss/space/badges/_badges.scss
assets/include/scss/space/icons/_svg-icon.scss
assets/include/scss/space/forms/_input-dropdown.scss
assets/include/scss/space/slick/_slick.scss
assets/include/scss/space/slick/arrows/_slick-arrow-classic.scss
assets/include/scss/space/utilities/_bg-colors.scss
assets/include/scss/space/utilities/_borders.scss
assets/include/scss/space/utilities/_fill-colors.scss
assets/include/scss/space/utilities/_gradient-overlay.scss
assets/include/scss/space/utilities/_letter-spacing.scss
assets/include/scss/space/utilities/_position-spaces.scss
assets/include/scss/space/utilities/_shadows.scss
assets/include/scss/space/utilities/_stroke-colors.scss
assets/include/scss/space/utilities/_text.scss
assets/include/scss/space/vendor/datepicker/_datepicker.scss
v1.3.1
- 20 April, 2019
Fixed
Path issues on demo pages
Enhanced
Gradient colors rewritten with variables now
Updated
FontAwesome from
v5.7.2
to v5.8.1
Other notable changes
assets/include/scss/space/_variables.scss
assets/include/scss/space/utilities/_text.scss
assets/include/scss/space/utilities/_position-spaces.scss
assets/include/scss/space/utilities/_borders.scss
assets/include/scss/space/utilities/_sizing.scss
assets/include/scss/space/utilities/_margin.scss
assets/include/scss/space/forms/_form.scss
assets/include/scss/space/timeline/_timeline.scss
assets/include/scss/space/card/_card.scss
html/home/app-business.html
html/home/shipping.html
v1.3
- 8 March, 2019
New
Restaurant demo
New
Added a new spinner loading component.
New
Added new toast component for displaying notifications.
New
Added a new iOS style switch (a modifier class to our custom checkboxes).
New
Added responsive
.list-group-horizontal
modifier classes for displaying list groups as a horizontal row.
New
Utility Classes
Fixed
Form validation across all HTML-pages (added
id="password"
to the password input).
Fixed
Timeline on Safari.
Fixed
.form-control
size style removed for the .input-group-lg
class.
Updated
Bootstrap from
v4.1.3
to v4.3.1
Updated
FontAwesome from
v5.5.0
to v5.7.2
Other notable changes
assets/include/scss/space/_variables.scss
assets/include/scss/space/utilities/_text.scss
assets/include/scss/space/utilities/_position-spaces.scss
assets/include/scss/space/utilities/_borders.scss
assets/include/scss/space/utilities/_sizing.scss
assets/include/scss/space/utilities/_margin.scss
assets/include/scss/space/forms/_form.scss
assets/include/scss/space/timeline/_timeline.scss
assets/include/scss/space/card/_card.scss
html/home/app-business.html
html/home/shipping.html
v1.2
- 4 December, 2018
New
Event demo
New
Shipping demo
New
Utility Classes
Fixed
Google Map degradation issue.
Fixed
components/hs.video-player.js
wrong path.
Enhanced
SASS file structure
Updated
Cubeportfolio from
v4.1.3
to v4.4.0
Updated
FontAwesome from
v5.2
to v5.5
Other notable changes
bootstrap.css
file merged to thetheme.css
.bootstrap.css
file removed from all HTML-files.px-to-rem
unit mixin dropped.position
mixin dropped.
v1.1
- 02 September, 2018
New
10 Home Pages
New
Icon Shadow Style (
.u-icon--shadow
class added)
New
Utility Classes
Fixed
Social APIs
Fixed
Validation message alignments on form layouts
Fixed
Header Absolute Second Screen - secondary dropdown position alignment
Enhanced
SASS file structure
Migration
- Renamed
.u-info-v1
class to.card-frame
. See Cards .u-pricing-v1
class dropped, and replaced with Bootstrap.card
classes. See Cards.align-items-*-center
classes removed from form layouts to fix the forms' error alignment$info
variable changed from$blue
to$cyan
, to fix duplication of$blue
variable.scss/vendor/_typo-font-sizes.scss
andscss/vendor/_typo-font-weight.scss
merged in toscss/vendor/_text.scss
file.scss/vendor/_rounded.scss
file renamed to_border.scss
.scss/vendor/bootstrap.scss
file moved toscss/
path.scss/vendor/
SCSS folder moved toscss/base/
path.


TruncateFile()
Syntax
TruncateFile(#File)Description
Cuts the file at the current file position and discards all data that follows.
Parameters
#File The file to use.
Return value
None.
Remarks
This function may be used to shorten a file without the necessity of recreating it entirely. To make a file longer, simply append more data with the write commands of this library.
See Also
FileSeek(), Loc()
Supported OS
All


Tell us if you think you’re facing a new trade barrier or have an issue with an existing trade barrier. We might be able to help resolve it.
A trade barrier is something that slows down, limits or prevents a UK business exporting to or investing in an overseas market.
They can affect businesses of all sizes and at all stages of exporting, even if you’re just exploring opportunities.
COVID-19 (coronavirus)
If there’s a barrier because of coronavirus, please let us know. It helps the UK government’s response to the pandemic.
You can report a new trade barrier or an issue with an existing one. To see if a trade barrier has already been reported visit check for barriers to trading and investing abroad. The service will give you the trade barrier title and identifying code which you will need if you want to report an issue with an existing trade barrier.
Report a barrier
Trade barriers are tariff, non-tariff or overseas direct investment restrictions that block or delay investments, exports or potential to do business.
You might be facing a barrier if, for example:
- regulations in an overseas market prevent you exporting or investing there
- you supply services and have to pay unnecessary charges that give an advantage to domestic suppliers
- your goods are delayed from getting to market by lengthy customs procedures
{% comment %} {% if features.MARKET_ACCESS_LINK_ON %}
You can read more information about trade barriers.
{% endif %} {% endcomment %}


To our followers and the greyhound community, we want you to know that we will be assisting to place the many dogs who will be displaced due to the vote in Florida. At the moment we are in the planning stages. Working with the folks in the greyhound industry and with other adoption groups to coordinate the task at hand. We will need help from you, our community. We will need foster homes, and more foster homes. The more places we have to host dogs, the more dogs we can help. If you aren't currently a foster home, and would like to be, please fill out our adoption application and note that you're wanting to help the Florida dogs - ignore the application fee: Adoption Application
Can't foster, but want to help? Let us know what you can/will do. Be specific, what skills and abilities do you have?
Stay tuned. In the coming days, weeks, and months we will know better what we need.


--- title: Israel shot 173 date: 2004-06-22T00:00:00.000Z filepathOriginal: photos/IMG0078.jpg filepathThumbnail: photos/IMG0078.thumbnail.jpg filepathPreview: photos/IMG0078.preview.jpg ---
Kos, Shtern, and Crembo get felt up by their seats at the modern art museum


UIBarButtonItem
Closures
framework adds closures for UIBarButtonItem
tap events, usually
found in a UINavigationBar.
All initializers that support the target-action pattern now have an equivalent
initialier that contains a handler
parameter.
navigationItem.leftBarButtonItem = UIBarButtonItem(title: "Left item", style: .plain) {
// left bar button item tapped
}
To add the closure handler to an existing UIBarButtonItem
, simply call the
onTap(handler:)
method. For instance, if you created your button
in a storyboard, you could call the following in your viewDidLoad
method.
let myRightBarButton = navigationItem.rightBarButtonItem!
myRightBarButton.onTap {
// right bar button item tapped
}
-
A convenience initializer for a UIBarButtonItem so that the tap event can be handled with a closure. This is equivalent of using the init(image:style:target:action:) initializer.
Declaration
Swift
public convenience init(image: UIImage?, style: UIBarButtonItemStyle, handler: @escaping () -> Void)
Parameters
image
The image to use for the button
style
The
UIBarButtonItemStyle
of the buttonhandler
The closure that is called when the button is tapped
-
A convenience initializer for a UIBarButtonItem so that the tap event can be handled with a closure. This is equivalent of using the init(image:landscapeImagePhone:style:target:action:) initializer.
Declaration
Swift
public convenience init(image: UIImage?, landscapeImagePhone: UIImage?, style: UIBarButtonItemStyle, handler: @escaping () -> Void)
Parameters
image
The image to use for the button
landscapeImagePhone
The image to use for the compressed landscape bar item
style
The
UIBarButtonItemStyle
of the buttonhandler
The closure that is called when the button is tapped
-
A convenience initializer for a UIBarButtonItem so that the tap event can be handled with a closure. This is equivalent of using the init(title:style:target:action:) initializer.
Declaration
Swift
public convenience init(title: String?, style: UIBarButtonItemStyle, handler: @escaping () -> Void)
Parameters
title
The text to use for the button
style
The
UIBarButtonItemStyle
of the buttonhandler
The closure that is called when the button is tapped
-
A convenience initializer for a UIBarButtonItem so that the tap event can be handled with a closure. This is equivalent of using the init(barButtonSystemItem:target:action:) initializer.
Declaration
Swift
public convenience init(barButtonSystemItem systemItem: UIBarButtonSystemItem, handler: @escaping () -> Void)
Parameters
barButtonSystemItem
The
UIBarButtonSystemItem
to be used for the buttonhandler
The closure that is called when the button is tapped
-
This method is a convenience method to add a closure handler to a
UIBarButtonItem
. Use this method if you are creating aUIBarButtonItem
using an initializer other than the convience ones provide, or if the item was created by a Storyboard or xib.
An example that adds a closure handler to an existing
UIBarButtonItem
:myBarButtonItem.onTap { // bar button tapped code }
Declaration
Swift
public func onTap(handler: @escaping () -> Void)
Parameters
handler
The closure that will be called when the tap is recognized.


JColorChooser
class to enable users to choose from a palette of colors.
A color chooser is a component that you can place
anywhere within your program GUI.
The JColorChooser
API also makes it easy
to bring up a dialog
(modal or not) that contains a color chooser.
Here is a picture of an application that uses a color chooser to set the text color in a banner:
The implementation of JColorChooser
was enhanced in JDK 7. If you
run the example using JDK 6 or earlier, you will see a simpler color chooser
component.
ColorChooserDemo.java
.
The color chooser consists of everything within the box labeled Choose Text Color. This is what a standard color chooser looks like in the Java Look & Feel. It contains two parts, a tabbed pane and a preview panel. The three tabs in the tabbed pane select chooser panels. The preview panel below the tabbed pane displays the currently selected color.
Here is the code from the example that creates
a JColorChooser
instance
and adds it to a container:
public class ColorChooserDemo extends JPanel ... { public ColorChooserDemo() { super(new BorderLayout()); banner = new JLabel("Welcome to the Tutorial Zone!", JLabel.CENTER); banner.setForeground(Color.yellow); . . . tcc = new JColorChooser(banner.getForeground()); . . . add(tcc, BorderLayout.PAGE_END); }
JColorChooser
constructor in the previous code snippet
takes a Color
argument,
which specifies the chooser's initially selected color.
If you do not specify the initial color,
then the color chooser displays
Color.white
.
See the
Color
API documentation for a list of color constants you can use.
A color chooser uses an instance of
ColorSelectionModel
to contain and manage the current selection.
The color selection model fires a change event
whenever the user changes the color in the color chooser.
The example program registers a change listener with the
color selection model so that it can update the
banner at the top of the window.
The following code registers and implements the change listener:
tcc.getSelectionModel().addChangeListener(this); . . . public void stateChanged(ChangeEvent e) { Color newColor = tcc.getColor(); banner.setForeground(newColor); }
A basic color chooser,
like the one used in the example program,
is sufficient for many programs.
However,
the color chooser API allows you to customize a color chooser
by providing it with a preview panel of your own design,
by adding your own chooser panels to it, or
by removing existing chooser panels from the color chooser.
Additionally, the JColorChooser
class provides two
methods that make it easy to use a color chooser within a dialog.
The rest of this section discusses these topics:
JColorChooser
API.
This program customizes the banner text color chooser in these ways:
This program also adds a button that brings up
a color chooser in a dialog,
which you can use to set the banner background color.
Showing a Color Chooser in a Dialog
The JColorChooser
class provides
two class methods to make it easy to use a color chooser in a
dialog.
ColorChooserDemo2 uses one of these methods,
showDialog
,
to display the background color chooser when the user
clicks the Show Color Chooser... button.
Here is the single line of code from the example
that brings up the background color chooser in a dialog:
Color newColor = JColorChooser.showDialog( ColorChooserDemo2.this, "Choose Background Color", banner.getBackground());
The dialog disappears under three conditions:
the user chooses a color and clicks the OK button,
the user cancels the operation with the Cancel button,
or the user dismisses the dialog with a frame control.
If the user chooses a color,
the showDialog
method returns the new color.
If the user cancels the operation or dismisses the window,
the method returns null
.
Here is the code from the example that updates
the banner background color
according to the value returned by showDialog
:
if (newColor != null) { banner.setBackground(newColor); }
showDialog
is modal.
If you want a non-modal dialog,
you can use JColorChooser
's
createDialog
method to create the dialog.
This method also lets you specify action listeners for the
OK and Cancel
buttons in the dialog window.
Use JDialog
's show
method
to display the dialog created by this method.
For an example that uses this method, see
Specifying Other Editors
in the
How to Use Tables section.
tcc.setPreviewPanel(new JPanel());
JPanel
has no size and no default view.
To set the preview panel back to the default,
use null
as the argument to setPreviewPanel
.
To provide a custom preview panel,
you also use setPreviewPanel
.
The component you pass into the method should
inherit from JComponent
,
specify a reasonable size,
and provide a customized view of the current color.
To get notified when the user changes the color
in the color chooser,
the preview panel must register
as a change listener on the color chooser's color selection model
as described previously.
Creating a Custom Chooser Panel
The default color chooser provides five chooser panels:
addChooserPanel
,
or you can limit it by removing chooser panels
with removeChooserPanel
.
If you want to remove all of the default chooser panels
and add one or more of your own, you can do this with a single
call to setChooserPanels
.
ColorChooserDemo2
uses this method to replace the default chooser panels
with an instance of
CrayonPanel
,
a custom chooser panel.
Here is the call to setChooserPanels
from
that example:
//Override the chooser panels with our own. AbstractColorChooserPanel panels[] = { new CrayonPanel() }; tcc.setChooserPanels(panels);
CrayonPanel
.
Next the code calls setChooserPanels
to
set the contents of the array as the color chooser's
chooser panels.
CrayonPanel
is a subclass of
AbstractColorChooserPanel
and overrides the five abstract methods defined in its superclass:
void buildChooser()
void updateChooser()
public void updateChooser() { Color color = getColorFromModel(); if (Color.red.equals(color)) { redCrayon.setSelected(true); } else if (Color.yellow.equals(color)) { yellowCrayon.setSelected(true); } else if (Color.green.equals(color)) { greenCrayon.setSelected(true); } else if (Color.blue.equals(color)) { blueCrayon.setSelected(true); } }
String getDisplayName()
getDisplayName
method:
public String getDisplayName() { return "Crayons"; }
Icon getSmallDisplayIcon()
null
.
Icon getLargeDisplayIcon()
null
.
JColorChooser
constructors and methods.
Other methods you might call
are listed in the API tables in
The JComponent Class.
The API for using color choosers falls into these categories:
| Method or Constructor | Purpose |
|---|---|
|
JColorChooser() JColorChooser(Color) JColorChooser(ColorSelectionModel) |
Create a color chooser.
The default constructor creates a color chooser
with an initial color of Color.white .
Use the second constructor
to specify a different initial color.
The ColorSelectionModel argument, when present,
provides the color chooser with a color selection model.
|
| Color showDialog(Component, String, Color) | Create and show a color chooser in a modal dialog.
The Component argument is the parent of the dialog,
the String argument specifies the dialog title,
and the Color argument specifies the chooser's initial color.
|
|
JDialog createDialog(Component, String, boolean, JColorChooser, ActionListener, ActionListener) |
Create a dialog for the specified color chooser.
As with showDialog ,
the Component argument is the parent of the dialog and
the String argument specifies the dialog title.
The other arguments are as follows:
the boolean specifies whether the dialog is modal,
the JColorChooser is the color chooser to display
in the dialog,
the first ActionListener is for the OK
button, and the second is for the Cancel button.
|
| Method | Purpose |
|---|---|
|
void setPreviewPanel(JComponent) JComponent getPreviewPanel() |
Set or get the component used to preview the color selection.
To remove the preview panel, use new JPanel() as
an argument.
To specify the default preview panel, use null .
|
|
void setChooserPanels(AbstractColorChooserPanel[]) AbstractColorChooserPanel[] getChooserPanels() |
Set or get the chooser panels in the color chooser. |
|
void addChooserPanel(AbstractColorChooserPanel) AbstractColorChooserPanel removeChooserPanel(AbstractColorChooserPanel) |
Add a chooser panel to the color chooser or remove a chooser panel from it. |
|
void setDragEnabled(boolean) boolean getDragEnabled() |
Set or get the dragEnabled property, which must be true
to enable drag handling on this component. The default value is false.
See
Drag and Drop and Data Transfer for more details.
|
| Method | Purpose |
|---|---|
|
void setColor(Color) void setColor(int, int, int) void setColor(int) Color getColor() |
Set or get the currently selected color.
The three integer version of the setColor method
interprets the three integers together as an RGB color.
The single integer version of the setColor method
divides the integer into four 8-bit bytes and interprets the integer
as an RGB color as follows:
|
|
void setSelectionModel(ColorSelectionModel) ColorSelectionModel getSelectionModel() |
Set or get the selection model for the color chooser. This object contains the current selection and fires change events to registered listeners whenever the selection changes. |
JColorChooser
and where those examples are described.
| Example | Where Described | Notes |
|---|---|---|
| ColorChooserDemo | This section | Uses a standard color chooser. |
| ColorChooserDemo2 | This section | Uses one customized color chooser
and one standard color chooser in a dialog
created with showDialog .
|
| TableDialogEditDemo | How to Use Tables | Shows how to use a color chooser
as a custom cell editor in a table.
The color chooser used by this example is created
with createDialog .
|
| BasicDnD | Introduction to DnD | Uses a color chooser that is not in a dialog; demonstrates default drag-and-drop capabilities of Swing components, including color choosers. |


| Napoleon | |
|---|---|
| Emperor of the French | |
| Reign | 18 Max 1804 – 6 April 1814 |
| Coronation |
|
| Predecessor | Monarchy established (partly himself as First Consul |
| Successor | Louis XVIII (Bourbon Restoration) |
| Reign | 20 March 1815 &ndash 22 June 1815 |
| Predecessor | Louis XVIII |
| Successor | Louis XVIII |
| King of Italy | |
| Reign | 17 March 1805 – 11 April 1814 |
| Coronation |
|
| Predecessor | Himself as President of Italy |
| Successor | Victor Emmanuel II (1861) |
| Protector of the Confederation of the Rhine | |
|
|
| Predecessor | Office established (partly Francis II as Holy Roman Emperor) |
| Successor | Francis I as President of the German Confederation |
| First Consul of France | |
|
|
| Predecessor | French Directory |
| Successor | Himself as Emperor of the French |
| More... | |
| Born | |
| Died |
|
| Burial | Les Invalides, Paris, France |
| Spouse |
|
| Issue | Napoleon II |
| Full name | Napoléon Bonaparte |
| House | Bonaparte |
| Father | Carlo Bounaparte |
| Mother | Letizia Ramolino |
| Religion | see religion section |
| Signature | |
| Coat of arms | |


[§328E-4 When not applicable.] This chapter shall not apply to any person who commits any act described herein pursuant to the direction or prescription of a practitioner, as defined in the Hawaii Food, Drug and Cosmetic Act (section 328-16). [L 1970, c 204, §4]


Instabilities in Interstellar Space
by
David Leslie Giaretta
St. Catherines College, Oxford
ar
A Thesis submitted t iversity of Oxford in fulfillment of the requirements for the degree of
Doctor of Philosophy
August, 1977


Module selector
Module suporting asynchronous access to sockets and files.

Backends luasocket and nixio are supported.
The socket can be setup to react to data arrival by either calling a handler function,
writing to a stream, or emiting signals.
Usage:
local selector = require 'lumen.selector'
selector.init({service='luasocket'})
| init (conf) |
Start the service. |
| new_tcp_server (locaddr, locport, pattern, handler) |
Creates a TCP server socket. |
| new_tcp_client (address, port, locaddr, locport, pattern, handler) |
Creates a TCP client socket. |
| new_udp (address, port, locaddr, locport, pattern, handler) |
Creates a UDP socket. |
| new_fd (filename, flags, pattern, handler) |
Opens a file. |
| grab_stdout (command, pattern, handler) |
Grab the output of a command. |
| close (sktd) |
Closes a socket/file. |
| send_sync (sktd, data) |
Synchronous data send. |
| send () |
Alias for send_sync. |
| send_async (sktd, data) |
Asynchronous data send. |
| getsockname (sktd) |
Get the local address of a socket. |
| getpeername (sktd) |
Get the remote address of a socket. |
| sktd |
Socket/File descriptor. |
| conf |
Configuration Table. |
-
init (conf)
-
Start the service.
Parameters:
- conf
the configuration table (see conf).
-
new_tcp_server (locaddr, locport, pattern, handler)
-
Creates a TCP server socket.
Emits a sktd.events.accepted, client_sktd signal on new connections.
Parameters:
- locaddr
Local IP address or '' (defaults to '')
- locport
Local port (defaults to 0)
- pattern
Any of nixio or luasocket patterns.
- handler
Optional, a handler function or 'stream'. Will be used
when creating new client sockets. See new_tcp_client.
'stream' mean a new stream will be created, and provided in
the sktd object.
Returns:
a sktd object
-
new_tcp_client (address, port, locaddr, locport, pattern, handler)
-
Creates a TCP client socket.
Can be set up to use a handler function, write to a stream, or emit signals
(sktd.events.data, data signal on incommig data, and sktd.events.data, nil, err on errors).
Parameters:
- address
Remote IP address.
- port
Remote port ()
- locaddr
Local IP address or '' (defaults to '')
- locport
Local port (defaults to 0)
- pattern
Any of nixio or luasocket patterns.
- handler
Optional, either a handler function or a stream.
The handler function must have a (sktd, data, err, part) signature.
The handler must return true to keep the socket open, otherwised the socket will b e closed
as soon as it returns (or errors).
When a stream it will be used to push data as it arrives. On socket closing, the stream
will be closed with the error message as provided by the socket.
If the handler parameter is nil, the socket object will emit signals.
Returns:
a sktd object on success, nil, err on failure
-
new_udp (address, port, locaddr, locport, pattern, handler)
-
Creates a UDP socket.
Can be set up to use a handler function, write to a stream, or emit signals
(sktd.events.data, data signal on incommig data, and sktd.events.data, nil, err on errors).
Parameters:
- address
Remote IP address.
- port
Remote port ()
- locaddr
Local IP address or '' (defaults to '')
- locport
Local port (defaults to 0)
- pattern
Any of nixio or luasocket patterns.
- handler
Optional, either a handler function or a stream.
The handler function must have a (sktd, data, err, part) signature.
The handler must return true to keep the socket open, otherwised the socket will be closed
as soon as it returns (or errors).
When a stream it will be used to push data as it arrives. On socket closing, the stream
will be closed with the error message as provided by the socket.
If the handler parameter is nil, the socket object will emit signals.
Returns:
a sktd object
-
new_fd (filename, flags, pattern, handler)
-
Opens a file.
Can be set up to use a handler function, write to a stream, or emit signals
(sktd.events.data, data signal on incommig data, and sktd.events.data, nil, err on errors).
Parameters:
- filename
- flags
ATM as specified for nixio.open()
- pattern
Any of nixio or luasocket patterns.
- handler
Optional, either a handler function or a stream.
The handler function must have a (sktd, data, err, part) signature.
The handler must return true to keep the socket open, otherwised the socket will be closed
as soon as it returns (or errors).
When a stream it will be used to push data as it arrives. On socket closing, the stream
will be closed with the error message as provided by the socket.
If the handler parameter is nil, the socket object will emit signals.
Returns:
a sktd object
-
grab_stdout (command, pattern, handler)
-
Grab the output of a command.
Usefull for capturing the output of long running programs.
Can be set up to use a handler function, write to a stream, or emit signals
(sktd.events.data, data signal on incommig data, and sktd.events.data, nil, err on errors).
Parameters:
- command
command whose ouput capture
- pattern
Any of nixio or luasocket patterns.
- handler
Optional, either a handler function or a stream.
The handler function must have a (sktd, data, err, part) signature.
The handler must return true to keep the socket open, otherwised the socket will b e closed
as soon as it returns (or errors).
When a stream it will be used to push data as it arrives. On socket closing, the stream
will be closed with the error message as provided by the socket.
If the handler parameter is nil, the socket object will emit signals.
Returns:
a sktd object
-
close (sktd)
-
Closes a socket/file.
Parameters:
-
send_sync (sktd, data)
-
Synchronous data send.
The task calling this function will block until all data is sent.
Parameters:
- sktd
a sktd object
- data
data to send
Returns:
true on success. nil, err, partial on failure
-
send ()
-
Alias for send_sync.
can be reasigned to to send_async, if so preferred
-
send_async (sktd, data)
-
Asynchronous data send.
This call return immediatelly. The data transmission will continue in background. Aditional calls
will queue data. When all data queued for asynchronous transmission is sent,
a
sktd.events.async_finished, success
signal is emitted.
Parameters:
- sktd
a sktd object
- data
data to send
-
getsockname (sktd)
-
Get the local address of a socket.
Parameters:
Returns:
ip, port
-
getpeername (sktd)
-
Get the remote address of a socket.
Parameters:
Returns:
ip, port
-
sktd
-
Socket/File descriptor.
Provides OO-styled access to methods, such as sktd:send(data) and sktd:close()
Fields:
- task
task that will emit signal related to this object
- stream
If asigned a stream object, will write data into it (in addittion to signals)
-
conf
-
Configuration Table.
Fields:
- service
backend to use: 'nixio' or 'luasocket' (default)
-
task
-
Task that emits signals.
-
ASYNC_SEND_BUFFER
-
Suggested max buffer size for asynchronous sending.
Must be set before first call to async send. Defaults to 1mb.


---
layout: post
title: du
tags: []
status: publish
type: post
published: true
meta: {}
---
I stumbled across the following command while reading this article:
du --max-depth=1 --human-readable --total
This gives you an estimated indication of your file space usage by folder. Here is some sample output:
12K ./lost+found
2.5M ./bin
84K ./dev
3.3M ./etc
187M ./home
7.6M ./lib
1.0K ./mnt
1.0K ./opt
65M ./proc
65K ./root
2.3M ./sbin
3.0K ./tmp
There are plenty of other useful scripts and tidbits in the article.


Models as Actions
2020-12-05
2 minutes
People typically categorize data science and machine learning work (as if there’s a difference -_-) in terms of supervised and unsupervised learning. But to me that’s a little too reductionist. Data science covers so much ground depending on the industry your working in and what your role is. For example, consider the following responsibilities…
- All ETL and feature engineering that has to be done to transform data.
- Optimizing loss functions to ensure predictive accuracy in supervised/unsupervised learning, deep learning, etc.
- Optimizing an objective function or solving systems of equations (e.g. operations research work).
- Exploring parameter or predictive distributions as you would in Bayesian statistics, probabilistic modeling, reliability engineering, etc.
- Stepping into engineering roles involving connecting infrastructure, creating data pipelines, developing libraries, and enforcing standards/best-practices.
- Visualizing data and results from the above responsibilities.
From my experience, it’s better to categorize data science work in terms of actions (identified above in bold). So instead of defining models as unsupervised/supervised models you have optimizing loss/objective functions and exploring ****distributions associated with the data generation process. So you can categorize these problems as optimization problems. This allows you to separate models from ETL and metric creation work which would be categorized as data transformation problems.
It’s a nicer way to classify the responsibilities of data science and machine learning work, all of which often get lumped into terminology like “models”. So rather than overloading the term “model”, this interpretation directly relates to what a data scientist is doing. Terms like unsupervised and supervised seem irrelevant to me since it’s usually pretty obvious if the data scientist is using an outcome variable or not.
To aggressively abstract this I guess what I’m saying is to classify models based on what you’re doing or the algorithm you’re using rather than the data itself.
297 Words


Formerly known as Atom Shell. Made with by GitHub.
Use HTML, CSS, and JavaScript with Chromium and Node.js to build your app.
Electron is open source; maintained by GitHub and an active community.
Electron apps build and run on Mac, Windows, and Linux.


--- layout: post title: Booting APC.io with Firefox OS date: 2015-01-15 20:31:56.000000000 +05:30 type: post published: true status: publish categories: - Firefox OS tags: - Firefox OS - Updates meta: _thumbnail_id: '405' _publicize_pending: '1' publicize_facebook_url: https://facebook.com/521066101241445_998592373488813 publicize_google_plus_url: https://plus.google.com/108982000212947208802/posts/gvSeeGvNE7p _rest_api_published: '1' _rest_api_client_id: "-1" _wpas_done_5327596: '1' _publicize_done_external: a:1:{s:8:"facebook";a:1:{i:100000377806894;b:1;}} _wpas_done_9797179: '1' publicize_twitter_user: iamVP7 publicize_twitter_url: http://t.co/1J8zsXsExx _wpas_done_5327584: '1' publicize_linkedin_url: https://www.linkedin.com/updates?discuss=&scope=72621861&stype=M&topic=5961590468549627904&type=U&a=0TrL _wpas_done_5327600: '1' publicize_tumblr_url: http://mobosedu.tumblr.com.tumblr.com/post/108190832065 _wpas_done_9797552: '1' _wpas_path_publicize_failure: O:13:"Keyring_Error":2:{s:16:" publicize_path_id: '' author: login: viswaprasath email<EMAIL_ADDRESS>display_name: Vitchu first_name: '' last_name: '' ---
Recently we Have seen Unboxing APC Paper IO which is very small PC looks more like a notebook running Firefox OS. It is the first time I am seeing a PC running Firefox OS, I hope still it is in development Stage. The boot time of this PC is incredible fast, it boots less than 1 min it is very nice.
[caption id="attachment_404" align="alignnone" width="660"] Backside of APC paper IO[/caption]
Setting-up APC paper with external hardware is very simple, we just need the following
APC is booting with Firefox OS 1.1
[embed]https://www.youtube.com/watch?v=lbsZXTpRUqw&feature=youtu.be[/embed]
After the system gets started the first screen is we need to unlock, for that we have to hold the lock button and slide from right to left.
[caption id="attachment_405" align="aligncenter" width="660"] First Screen of APC[/caption]
It is have a new application Prospector which is similar to File Explorer.
[caption id="attachment_407" align="aligncenter" width="660"] Prospector[/caption]
One of the very interesting part of the settings application is it is split screen, i.e., whenever we click on the option the specification about them will appear on right side, the list of choice of settings will be static and appears on the left side.
[caption id="attachment_408" align="aligncenter" width="660"] digital photo frame[/caption]
Among settings option Digital Photo Frame seems to be new option which is not in Firefox OS, it is a simple screen saver like application so whenever we are not using the system for a specific amount of time it get activated.
[embed]https://www.youtube.com/watch?v=hV-JJ2k8kes[/embed]
There are lot of areas in which APC should be improved, since it is first try they have some little features, and it is simply awesome as of now, expecting lot of improvements in future.


The place for tests.SM Enterprise custom test and lesson software to train and certify your employees, partners and customers. Try Gauge Looking for a test? Custom certification lesson and tests For Enterprises Learning Management Systems For Enterprises Free Practices Tests Test Making Tools For Teachers Bandwidth Speed Tests For Your Device Software Testing Tools For Developers DNA Testing For paternity &drug screening Personality Tests For Everyone IQ Tests For Anyone
Enterprise custom test and lesson software to train and certify your employees, partners and customers. Try Gauge


--- layout: post title: A simple XSS demo – on Times of India date: '2013-11-16T08:31:25+05:30' tags: - XSS - javascript - Secuity - Technology tumblr_url: http://arjunsreedharan.org/post/67148385214/a-simple-xss-demo-on-times-of-india permalink: /post/67148385214/a-simple-xss-demo-on-times-of-india ---
Some time ago, I dropped by the Times of India website and entered a “vector” string as a query in the search field. Then, the page heading read as below (Arjun024 being my twitter handle):
News: All twitter followers of Arjun024 to be awarded gold coins
Later someday, I searched Google for “arjun024 Times of India”. To my astonishment, Google indexed the link with the “attacking” vector and displayed it as the first result. Now, it is there for posterity to have a go at winning some gold coins ;)
Now let us see how it”s done:
We get to the Times of India search page where we can search using the url parameter “query”.
Let”s say we want to search for mega, then the url looks like:
This is how it appears in their not-sanitized html output:
Whatever value is supplied for the parameter “query”, it is without sanitization assigned to a JavaScript variable here in the form:

where queryParameterValue is the value of the url parameter “query”
This means that if you give a quotation mark (“) in the parameter value, the part after the quotation mark escapes out of the assignment to the searchvel variable.
Let”s try out one such case.
Here, we query for Na”//ma : the quotation-mark tricks JavaScript to believe that it is the end of the string and the double forward slashes makes JavaScript consider everything after that as comments and therefore as inactive code.

So, we give the parameter value as ";alert(1)//
Here is what happens:
And the html looks like this:
Now, we could insert whatever script we like to and get it reflected off the site in what is a reflected XSS “attack”.
I chose to give myself some (cheap) publicity :P and replace the body content with a piece of “news”.
Here”s what my URL looked like:
";</script>
News: All twitter followers of Arjun024 to be awarded gold coins

NewDelhi: Govt of India has announced gold coins for all followers of Arjun024.. LOL
< !--
The html comment begin token <!- - makes sure that everything to follow remain commented and the document effectively ends there.
And here”s how the “news” appeared:


Tic Tac Toe
Select your mark:
⭕
❌
Select difficulty:
🙂
😎
😈
(😈 hard mode is coming soon...)
START
X WINS!!!
(Click here to play again)
O WINS!!!
(Click here to play again)
DRAW GAME!!!
(Click here to play again)


That means that this image doesn't contains any of the proposed labels.


*Application will not be accepted unless you submit a copy of a current unofficial transcript.
Allowed file type: pdf; Max File Size: 5MB


curl -XPUT 'localhost:9200/content' -H 'Content-Type: application/json' -d'
{
"mappings": {
"article": {
"title": { "type": "text" },
"content": { "type": "text" },
"number_of_comments": { "type": "integer" }
},
"comment": {
"username": { "type": "keyword" },
"content": { "type": "text" }
}
}
'
curl -XDELETE 'localhost:9200/content'
curl -XPUT 'localhost:9200/content/_mapping/user' -H 'Content-Type: application/json' -d'
{
"properties": {
"name": { "type": "keyword" }
"content": { "type": "text" }
}
}
'
curl -XPUT 'localhost:9200/talks/talk/1' -H 'Content-Type: application/json' -d'
{
"title" : "Practical Introduction to Elasticsearch",
"body": "Bla bla bla...",
"author": "Piotr Leniec"
}
'
curl -XGET 'localhost:9200/talks/talk/1'
curl -XDELETE 'localhost:9200/talks/talk/1'
Hello!
My name is John.
Hello! My name is John.
My email address is<EMAIL_ADDRESS>My Email address is [email hidden]
The 2 QUICK Brown-Foxes jumped over the dog's bone.
[ The, 2, QUICK, Brown-Foxes, jumped, over, the, dog's, bone. ]
The 2 QUICK Brown-Foxes jumped over the dog's bone.
[ The, QUICK, Brown, Foxes, jumped, over, the, dog, s, bone ]
2 Quick Foxes.
[ Qu, Qui, Quic, Quick, Fo, Fox, Foxe, Foxes ]
[ The, QUICK, Brown, Foxes, jumped, over, the, dog, s, bone ]
[ QUICK, Brown, Foxes, jumped, over, bone ]
[ The, QUICK, Brown, Foxes, jumped, over, the, dog, s, bone ]
[ the, quick, brown, foxes, jumped, over, the, dog, s, bone ]
curl -XGET 'localhost:9200/_analyze' -H 'Content-Type: application/json' -d'
{
"analyzer": "standard",
"text": "this IS a test"
}
'
[ this, is, a, test ]
curl -XGET 'localhost:9200/_analyze' -H 'Content-Type: application/json' -d'
{
"char_filter": ["html_strip"],
"tokenizer": "keyword",
"filter": ["lowercase"],
"text": "this IS a test"
}
'
[ this is a test ]
curl -XGET 'localhost:9200/talks/_search' -H 'Content-Type: application/json' -d'
{
"query": {
"match" : {
"body" : "this is a test"
}
}
}
'
curl -XGET 'localhost:9200/talks/talk/_search' -H 'Content-Type: application/json' -d'
{
"query": {
"match" : {
"body" : "this is a test"
}
}
}
'
curl -XGET 'localhost:9200/talks/talk/_search' -H 'Content-Type: application/json' -d'
{
"query": {
"term" : {
"body" : "this is a test"
}
}
}
'


License
Nest is licensed under the New BSD license, That is bundled with this package in the file LICENSE, and is available through the world-wide-web at
http://www.opensource.org/licenses/bsd-license.php
.


Overview
AutoML Framework Overview
There are four essential components in the AutoML framework, i.e. FeatureTransformer, Model, SearchEngine, and Pipeline.
A FeatureTransformer (inherited from BaseFeatureTransformer class) defines the feature engineering process, which usually includes a chain of operations like feature generation, feature transformations and selection. A Model (inherited from BaseModel class) usually defines an optimizable model (e.g. AlexNet or LeNet), and a fitting function using an optimization algorithm (e.g. SGD, Adam, etc.). A Model may also include the procedure of model/algorithm selection.
During training, a SearchEngine (inherited from SearchEngine class) searches for the best set of hyper parameters for both FeatureTransformer and Model and control the actual model fitting process. A Pipeline (inherited from Pipeline class) is a convenient utility that integrates FeatureTransformer and Model into an end2end data processing pipeline. A Pipeline can be easily saved to file and loaded for reuse later elsewhere.
A typical training workflow with AutoML looks like below:
- A FeatureTransformer and A Model are instantiated. A SearchEngine is then instantiated and configured with the FeatureTransformer and Model, along with search presets, specifying how parameters are searched, the reward metric, and etc.
- The SearchEngine runs the search procedure. It will generate several trials at a time and distribute the trials in a cluster. Each trail runs feature engineering and the model fitting process with a different combination of hyper parameters and obtain the target metric. It may take a while if the search presets generate many trails or model fitting takes a long time.
- After all trials completed, the best configuration and fitted model are retrieved according to the target metric. They are used to generate the result FeatureTransformer and Model, which are in turn used to compose a Pipeline. The Pipeline can then be saved to file and loaded later for inference and resume/incremental training.


XMin is a Hugo theme written by Yihui Xie in about four hours: half an hour was spent on the Hugo templates, and 3.5 hours were spent on styling. The main motivation for writing this theme was to provide a really minimal example to beginners of Hugo templates. This XMin theme contains about 130 lines of code in total, including the code in HTML templates and CSS (also counting empty lines).
find . -not -path '*/exampleSite/*' \( -name '*.html' -o -name '*.css' \) | xargs wc -l
5 ./layouts/404.html
12 ./layouts/_default/single.html
20 ./layouts/_default/list.html
13 ./layouts/_default/terms.html
0 ./layouts/partials/foot_custom.html
0 ./layouts/partials/head_custom.html
9 ./layouts/partials/footer.html
20 ./layouts/partials/header.html
51 ./static/css/style.css
7 ./static/css/fonts.css
137 total
I can certainly further reduce the code, for example, by eliminating the CSS, but I believe a tiny bit of CSS can greatly improve readability. You cannot really find many CSS frameworks that only contain 50 lines of code.
Although it is a minimal theme, it is actually fully functional. It supports pages (including the home page), blog posts, a navigation menu, categories, tags, and RSS. With a little bit customization, it can easily support LaTeX math expressions, e.g.,
$${\sqrt {n}}\left(\left({\frac {1}{n}}\sum _{i=1}^{n}X_{i}\right)-\mu \right)\ {\xrightarrow {d}}\ N\left(0,\sigma ^{2}\right)$$
All pages not under the root directory of the website are listed below. You can also visit the list page of a single section, e.g., posts, or notes. See the About page for the usage of this theme.


Analytics
Get a better understanding of where your traffic is coming from.
Learn more →
Engagement
Speak directly to your customers in a more meaningful way.
Learn more →
Security
Your customer data will be safe and secure.
Learn more →
Integrations
Connect with third-party tools that you're already using.
Learn more →


Southern Ireland Repeater Network, presented to South Eastern Amateur Radio Group group on June 15 2020. (Slides)
Introduction to APRS, updated May 2020. (Slides)
DMR and Brandmeister in Ireland, IRTS AGM, 2018. (Slides)
APRS Users email list (Dealing with Ireland)
APRS Digipeater Owners email list (Dealing with Ireland)
Irish Radio Transmitters Society
South Eastern Amateur Radio Group
Southern Ireland Repeater Group
mods.dk Lots of modifications and manuals for different radios.


flash_on
Speeds up development
We did most of the heavy lifting for you to provide a default stylings that incorporate our custom components. Additionally, we refined animations and transitions to provide a smoother experience for developers.
group
User Experience Focused
By utilizing elements and principles of Material Design, we were able to create a framework that incorporates components and animations that provide more feedback to users. Additionally, a single underlying responsive system across all platforms allow for a more unified user experience.
settings
Easy to work with
We have provided detailed documentation as well as specific code examples to help new users get started. We are also always open to feedback and can answer any questions a user may have about Materialize.
Blog - Creative Agency
Lorem ipsum dolor sit amet consectetur adipisicing elit. Nostrum at tenetur mollitia voluptate? Tempore, itaque.
Lorem ipsum dolor sit amet consectetur adipisicing elit. Nostrum at tenetur mollitia voluptate? Tempore, itaque.
Lorem ipsum dolor sit amet consectetur adipisicing elit. Nostrum at tenetur mollitia voluptate? Tempore, itaque.
Lorem ipsum dolor sit amet consectetur adipisicing elit. Nostrum at tenetur mollitia voluptate? Tempore, itaque.


Pittsburgh Technical College
Meeting Trackers
Start Bootstrap
Featured
Fundraiser
Meeting Trackers
(current)
Check Request
Rules and Clubs
Meeting Event Tracker Form
Name of Student Organization
Contact Name
Contact Email
Proposed Date
Proposed Start Time
Number of Attending Members
Cost of Event (USD)
Description of Future Events
Brief description of future events
Number of Current Members


by Logan H. G. Davis
This project is an attempt to recreate and convey the anxieties and feelings I have and have had as a person with dyslexia.
Black underlined words will progress you through the piece.


{{story.title}}
Topic: {{story.topic}}
Author: {{story.author}}
Created At: {{story.created_at}}
>>>{{story.text}}
{% extends "base.html" %} {% import "bootstrap/wtf.html" as wtf %}
Topic: {{story.topic}}
Author: {{story.author}}
Created At: {{story.created_at}}
>>>{{story.text}}


A Quadratic is a polynomial whose highest exponent is 2. \(ax^{2} + bx + c\). The coefficient of \(x^{2}\) is called the leading coeffieient. where x represents an unknown, and a, b, and c represent known numbers, where a ≠ 0.
If a = 0, then the equation is linear, not quadratic, as there is no \(ax^{2}\) term. The numbers a, b, and c are the coefficients of the equation and may be distinguished by calling them, respectively, the quadratic coefficient, the linear coefficient and the constant or free term.
The values of x that satisfy the equation are called solutions of the
equation, and roots or zeros of the expression on its left-hand side. A
quadratic equation has at most two solutions. If there is no real
solution, there are two complex solutions. If there is only one
solution, one says that it is a double root. A quadratic equation always
has two roots, if complex roots are included and a double root is
counted for two. A quadratic equation can be factored into an equivalent
equation
\({\displaystyle ax^{2}+bx+c=a(x-r)(x-s)=0}\)
A quadratic equation with real or complex coefficients has two solutions, called roots. These two solutions may or may not be distinct, and they may or may not be real.
t may be possible to express a quadratic equation ax2 + bx + c = 0 as a product (px + q)(rx + s) = 0. In some cases, it is possible, by simple inspection, to determine values of p, q, r, and s that make the two forms equivalent to one another. If the quadratic equation is written in the second form, then the "Zero Factor Property" states that the quadratic equation is satisfied if px + q = 0 or rx + s = 0. Solving these two linear equations provides the roots of the quadratic.
The process of completing the square makes use of the algebraic identity
\(x^{2}+2hx+h^{2}=(x+h)^{2},\)
which represents a well-defined algorithm that can be used to solve any
quadratic equation. Starting with a quadratic equation in standard form,
ax2 + bx + c = 0
Completing the square can be used to derive a general formula for solving
quadratic equations, called the quadratic formula.t can easily be seen, by
polynomial expansion, that the following equation is equivalent to the
quadratic equation:
\(\left(x+{\frac {b}{2a}}\right)^{2}={\frac {b^{2}-4ac}{4a^{2}}}.\)
Taking the square root of both sides, and isolating x, gives:
\({\displaystyle x={\frac {-b\pm {\sqrt {b^{2}-4ac}}}{2a}}.}\)
The golden ratio is found as the positive solution of the quadratic equation \(x^{2}-x-1=0.\) The equations of the circle and the other conic sections—ellipses, parabolas, and hyperbolas—are quadratic equations in two variables.
Given the cosine or sine of an angle, finding the cosine or sine of the angle that is half as large involves solving a quadratic equation.
The process of simplifying expressions involving the square root of an expression involving the square root of another expression involves finding the two solutions of a quadratic equation.
The equation given by Fuss' theorem, giving the relation among the radius of a bicentric quadrilateral's inscribed circle, the radius of its circumscribed circle, and the distance between the centers of those circles, can be expressed as a quadratic equation for which the distance between the two circles' centers in terms of their radii is one of the solutions. The other solution of the same equation in terms of the relevant radii gives the distance between the circumscribed circle's center and the center of the excircle of an ex-tangential quadrilateral.


The kitools package provides utilities for data scientists working on Knowledge Integration (KI) projects and supporting workflows within these projects.
The kitools package is available as both Python and R packages. To tailor this documentation to your language of choice, use the R/Python toggle in the navigation bar. This introduction provides background and an overview of package functionality. To learn how to install and use the package, follow the links in the “Articles” menu in the navigation bar.
The primary workflow supported by kitools is working with data that is stored in repositories on content nodes.
In KI projects, there are three major classes of data:
KiData_MNCH_Controlled
). These repositories are managed by the data curation team, who have read/write access to the respositories. Data scientists pull data from these repositories to use in their KI analyses, but do not have write access to the repositories.KI data scientists perform their work on a local workstation, but they need a way to get the data they need to analyze to their workstation as well as to share data and results coming out of their analysis.
The kitools package provides functionality that helps you register all data associated with your analysis and handles pushing and pulling that data to and from the content node. This is handled through the notion of a “KI project”.
At the heart of the kitools package is the notion of a “KI project”, which is a directory on the data scientist’s workstation in which all analysis data, code and artifacts are stored, and a corresponding analysis Synapse repository.
The package provides a function that initializes a KI project directory and Synapse space (or can associate the project with an existing analysis Synapse space), with additional functions that help you register datasets that are associated with the analysis. All datasets are tracked in a KI project “manifest” file, which provides a mapping of data in the local directory and where the data is located on Synapse.
A typical KI analysis begins with the specification of core datasets that will be used in the analysis, with functions to add these datasets to the project manifest and pull them from their corresponding core data repository spaces on Synapse.
Then, throughout the analysis, as the data scientist adds auxiliary data or creates analysis artifacts and results, these can be added and pushed to the KI project’s KI analysis repository.
You can learn the specifics of doing this in the “Articles” documents accessible from the navigation bar.
There are many reasons for keeping a close tracking of data used in KI analyses and providing the push/pull of the data between the analyst’s workstation and the content node. These include:
To get started using kitools, visit the installation and setup guide.


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Designed & Developed by
Uday Kumar Pyda
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A Buffer represents a sequence of zero or more bytes that can be
written to or read from, and which expands as necessary to accomodate any
bytes written to it.
Buffers are used in many places in vert.x, for example to read/write
data to/from NetSocket, AsyncFile, WebSocket, HttpClientRequest,
HttpClientResponse, HttpServerRequest, HttpServerResponse etc.
There are two ways to write data to a Buffer: The first method
involves methods that take the form set_XXX. These methods write data
into the buffer starting at the specified position. The position does not
have to be inside data that has already been written to the buffer; the
buffer will automatically expand to encompass the position plus any data
that needs to be written. All positions are measured in bytes and start
with zero.
The second method involves methods that take the form append-XXX;
these methods append data at the end of the buffer. Methods exist to both
set and append all primitive types, String and other instances of
Buffer.
Data can be read from a buffer by invoking methods which take the form
get_XXX. These methods take a parameter representing the position in the
Buffer from where to read data.
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to_string(self,
enc="UTF-8")
Buffer in enc encoding |
source code
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get_byte(self,
pos)
Get the byte at position pos in the buffer. |
source code
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get_fixnum(self,
pos,
bytes)
Get the fixnum represented by a sequence of bytes starting at
position pos in the buffer. |
source code
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get_float(self,
pos,
bytes)
Get the float represented by a sequence of bytes starting at position
pos in the buffer. |
source code
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get_string(self,
pos,
end_pos,
enc='UTF-8')
Return bytes from the buffer interpreted as a String |
source code
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get_buffer(self,
pos,
end_pos)
Return bytes in the buffer as a Buffer |
source code
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set_float(self,
pos,
num,
bytes)
Sets bytes in the buffer to a representation of a float. |
source code
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set_string(self,
pos,
str,
enc="UTF-8")
Set bytes in the buffer to the string encoding in the specified
encoding |
source code
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copy(self)
Get a copy of the entire buffer. |
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| dead_address_test/0* | |
| mshttpsys/1 | Connects to port 80 and sends the scan command. |
| mshttpsys_scan/1* | Searches the server's return string for vulnerability confirmation. |
| safe_address_test/0* |
dead_address_test() -> any()
mshttpsys(Address::inet:ip4_address()) -> scan_result()
Connects to port 80 and sends the scan command
mshttpsys_scan(Headers::string()) -> not_vulnerable | vulnerable
Searches the server's return string for vulnerability confirmation
safe_address_test() -> any()
Generated by EDoc, Jul 1 2015, 06:35:28.


This section is dedicated to examining a new actor in the landscape of art and heritage museums: digital art. Under many different names (digital art, new media, net art, etc.), this new medium brings new questions to the domain of showing art. First, we will have an overview of those new challenges and second, we will feature a conversation with Pat Shiu, digital archivist and designer at Rhizome, the New Museum's center for internet art.
welcome!
-> concepts and challenges of digital art/culture
-> conversation with pat shiu, rhizome
"The basic characteristics of digital work are that it is programmable, iterative, generative, and frequently networked." -Johanna Drucker
There are different ways of naming art made with computers: new media art, digital art, time-based media, variable media.
The definition we will use here is that of computational art, an art that is essentially interactive (i.e. needs to be completed by an audience), art that relies on particular processes of the medium/machine rather than just the finished product. As such, it is an art that is always in becoming, that always realizes itself. It can have different version, both at its core and at its manifestations.
The question that arises, then is that, if there is no "canonical state", what state should it be presented in? What is its natural state?
between intent, hardware and presentation
Digital art is often based on conceptual art, following Sol Lewitt, which means that the idea, or the intent behind the art is as important as the form itself. So there should be some sort of freedom with regards to the technical implementation. David Rokeby wanted Very Nervous System to be a piece about paying attention to the body rather than the system. The changing technical contexts means that it might not be the case anymore.
However, the hardware does pose some important limitations. First of all, it fails, so it might need to be replaced, and with different hardware. Does that still maintain the "preservation" mission of the museum? Where is the limit to manipulation? Example of Sophia Al Maria's Litany: the piece was bought by the Whitney with used devices, then exhibited in Dubai with brand new devices. It was then shown in Chicago, but in what form? They can ask the artist, but what if the artist isn't there anymore?
Just like Brecht's play was butchered by the most recent Berliner Ensemble director, there is still a need to respect the artist's original intent. So how do you make that decision? By having lots and lots of archive material.
if the visitors are engaging directly with it, does it mean it's implicitly understood?
More than any other works of art, these are pieces that are made to be engaged with by the audience. As we've seen with the procedural rhetoric approach, the piece itself should already be explaining what is the case. For instance, who understands Tetris better? Someone who's played it everyday for 15 years, or a curator who never owned a Game Boy? Does it need to be displayed on the Electronika 60?
Another example is Access a site-specific installation which must be lived in order to be understood.
So now there are two different problems: you need to have the audience engage with the work, and you might still want to contextualize what that work is. Because even though it's recent, doesn't mean all the artistic and cultural implications of it are understood.
digital objects are cultural objects, both ubiquitous and ephemeral.
Humans create more and more information every year, and all that information is relevant to the times today (and is going to be incredibly useful to future generations of historians). The question then is how do you preserve all of that? Do you rely on private companies like MySpace or Twitter?
So beyond the preservation of digital, there is a separate need for preservation of digital cultural heritage, including platforms such as Vine, MySpace, LiveJournal, or Myst Online. An example of this kind of digital heritage are MUDs, where a lot of early programmers engaged in early networked interactivity, 4chan.org, where a lot of early neo-fascist movements have developed and organized.
how do we mediate contemporary production?
-> choice of hardware and software
-> additional "old" media
-> we accumulate documentation to keep options open
So while we're still trying to understand the historical significance of these digital objects, there is still a need to develop an approach right now to best serve the interests of the future.
A first approach is obviously the choice of hardware and software: do we decide to show it as a re-interpreted piece (running on the latest hardware, with different processing speeds, graphics, sounds) or do we leave it as the original, on the original operating system, with the original browser? Do we offer a time capsule, that is self-contained in the past or something that integrates seamlessly into the present? Let us not forget that computers are theaters, and there installation already creates personas in the users.
A second approach is actually to take a step back, and focus on the qualification (i.e. the improvement) of the context by using older media, publishing manifestos, wall text, and explanations that highlight the complexity of the art. This provides an insight in how communication works: it is not about always using the latest technology, but rather about using different media, providing a different angle on the same piece.
-> should digital artworks remain in their original environment?
-> should physical museums (geographically-bound) be responsible for cyberspace content?
-> should the artists' intent be respected, or the public's reception?
Should you have to play the Sims on an original PC? Should you have to access wikipedia on a dial-up connection?
Who is responsible for Soundcloud? For YouTube? Should individual users be responsible for their own content? Or, on the opposite, should we just learn to let go of the past and not archive anything?
In the case of pieces that were built on certain expectations, and knowledge levels of the public at the time to elicit a certain feeling/expression, should the artwork be updated to match a changing audience, or should it remain the same state, and mediate to the audience why a certain artwork was essential at the time?
-> implementation is always more complicated than with "old media"
-> digital heritage is everywhere around us (easy to save, easy to disappear)
-> mediation is about contrasting media
-> no one has a best practice yet
-> make progress on your prototype
-> make progress on your activation


Session
Configuration
Since HTTP driven applications are stateless, sessions provide a way to store information about the user across requests. Laravel ships with a variety of session back-ends available for use through a clean, unified API. Support for popular back-ends such as Memcached, Redis, and databases is included out of the box.
The session configuration is stored in config/session.php
. Be sure to review the well documented options available to you in this file. By default, Laravel is configured to use the file
session driver, which will work well for the majority of applications.
Before using Redis sessions with Laravel, you will need to install the predis/predis
package (~1.0) via Composer.
Note: If you need all stored session data to be encrypted, set the
encrypt
configuration option totrue
.
Reserved Keys
The Laravel framework uses the flash
session key internally, so you should not add an item to the session by that name.
Session Usage
Storing An Item In The Session
Session::put('key', 'value');
Push A Value Onto An Array Session Value
Session::push('user.teams', 'developers');
Retrieving An Item From The Session
$value = Session::get('key');
Retrieving An Item Or Returning A Default Value
$value = Session::get('key', 'default');
$value = Session::get('key', function() { return 'default'; });
Retrieving An Item And Forgetting It
$value = Session::pull('key', 'default');
Retrieving All Data From The Session
$data = Session::all();
Determining If An Item Exists In The Session
if (Session::has('users'))
{
//
}
Removing An Item From The Session
Session::forget('key');
Removing All Items From The Session
Session::flush();
Regenerating The Session ID
Session::regenerate();
Flash Data
Sometimes you may wish to store items in the session only for the next request. You may do so using the Session::flash
method:
Session::flash('key', 'value');
Reflashing The Current Flash Data For Another Request
Session::reflash();
Reflashing Only A Subset Of Flash Data
Session::keep(array('username', 'email'));
Database Sessions
When using the database
session driver, you will need to setup a table to contain the session items. Below is an example Schema
declaration for the table:
Schema::create('sessions', function($table)
{
$table->string('id')->unique();
$table->text('payload');
$table->integer('last_activity');
});
Of course, you may use the session:table
Artisan command to generate this migration for you!
php artisan session:table
composer dump-autoload
php artisan migrate
Session Drivers
The session "driver" defines where session data will be stored for each request. Laravel ships with several great drivers out of the box:
file
- sessions will be stored inapp/storage/sessions
.cookie
- sessions will be stored in secure, encrypted cookies.database
- sessions will be stored in a database used by your application.memcached
/redis
- sessions will be stored in one of these fast, cached based stores.array
- sessions will be stored in a simple PHP array and will not be persisted across requests.
Note: The array driver is typically used for running unit tests, so no session data will be persisted.


Download that file
Welcome to
Electron
app running on this magnificent
machine.
You are in
environment.


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The latest development in this growing resort town is the Dinevi marina, the largest in Bulgaria. The beach was expanded in 2007 and this town has the only beaches facing due South in Bulgaria. The marina resort with its clubs and restaurants atrracts the wealthy elite of Bulgaria.
Position 42° 42.3’N, 27° 46.0’E.
The marina have informed noonsite that whilst last year (2010) it was possible for them to arrange clearance on request by the owner, from the beginning of 2011, under special instruction from the Border police office, it is now forbidden for clearance to be performed outside the official ports of entry for Bulgaria.
This is a well sheltered marina, located in the Northern part of Nessebar Bay, a short distance from town. As you approach the Marina call VHF Ch 73 for berthing instructions.
Last updated September 2011.