Software Developer
I am currently in my fourth year of school at the University of Washington, where I will graduate at the end of Spring with a Bachelor's degree in Computer Science. After graduation, I will be working as a Software Developer at Facebook. Until then, I am spending my free time practicing my skills through a variety of projects. I am always looking for new projects to work on, so if you are in need of a programmer, please feel free to contact me.
Chess Mates in a non-profit organization that enhances primary education through after-school chess programs. I worked as a chess instructor, teaching classes between ten and twenty students while also learning a great deal myself.
I worked as a software development intern over the summer at CDK Global, a company that assists automobile manufacturers and dealerships in efficient and modern advertising. At the time, the company was called Cobalt, which was a part of ADP Dealership Services.
I begin working at Facebook at the end of the summer as a full-time Software Developer


net = glm(nin, nout, func) net = glm(nin, nout, func, prior) net = glm(nin, nout, func, prior, beta)
net = glm(nin, nout, func)
takes the number of inputs
and outputs for a generalized linear model, together
with a string func
which specifies the output unit activation function,
and returns a data structure net
. The weights are drawn from a zero mean,
isotropic Gaussian, with variance scaled by the fan-in of the
output units. This makes use of the Matlab function
randn
and so the seed for the random weight initialization can be
set using randn('state', s)
where s
is the seed value. The optional
argument alpha
sets the inverse variance for the weight
initialization.
The fields in net
are
type = 'glm' nin = number of inputs nout = number of outputs nwts = total number of weights and biases actfn = string describing the output unit activation function: 'linear' 'logistic' 'softmax' w1 = first-layer weight matrix b1 = first-layer bias vector
net = glm(nin, nout, func, prior)
, in which prior
is
a scalar, allows the field
net.alpha
in the data structure net
to be set, corresponding
to a zero-mean isotropic Gaussian prior with inverse variance with
value prior
. Alternatively, prior
can consist of a data
structure with fields alpha
and index
, allowing individual
Gaussian priors to be set over groups of weights in the network. Here
alpha
is a column vector in which each element corresponds to a
separate group of weights, which need not be mutually exclusive. The
membership of the groups is defined by the matrix index
in which
the columns correspond to the elements of alpha
. Each column has
one element for each weight in the matrix, in the order defined by the
function glmpak
, and each element is 1 or 0 according to whether
the weight is a member of the corresponding group or not.
net = glm(nin, nout, func, prior, beta)
also sets the
additional field net.beta
in the data structure net
, where
beta corresponds to the inverse noise variance.
glmpak
, glmunpak
, glmfwd
, glmerr
, glmgrad
, glmtrain
Copyright (c) Ian T Nabney (1996-9)


Online Chat ScreenShot Generator
This Online Chat and Messenger simulator will help you recreate social media conversations and to take a screenshot image. It can simulate both Android and iPhone SMS (text message), and the most popular chat applications, such as Facebook Messenger, Skype, Twitter, Tinder, Whattsapp and Linkedin. It supports dates, images, text messages (even HTML code) and emojis.
Online fake text message maker
The best use of this free online tool is to create fake text messages. Recreate funny or invent fictional conversations between real or imaginary characters.
Taking a fake text message chat screenshot can be done in a few simple steps with this website. Later you can use it to prank someone or share it on your social media.
How to use the fake messagenger?
The program was built to be very intuitive and easy to use even without reading this guide. Play the animation that demonstrates how to set up the messages. Stop the demo and erase the screen to start with a fresh page.
- Select a design in the header
- Add or remove a phone frame
- Add a profile picture and edit the name(s)
- Set up the messages and send it as you or your friend
- Take a screenshot with the PrtScr button
- Share it on the social media
Hidden features
The submitted messages in the speech bubbles is editable.
Hover a sent row with your mouse to reveal the close, move up and move down options. This will allow you to get rid of unwanted texts and reorganize them.
The tool supports HTML code wich pushes the limitations of the tool, allowing you to add bold text, or any other formatting. For more information about HTML tags visit the interactive HTML cheat sheet.
Apps and Designs
The program supports the most popular mobile applications but not Viber and Snapchat.
Android and iPhone SMS Text Messages
The first tabs open the most popular two mobile operating systems: Android and iOs. By default they show in mobile frames of two flagship phones: a squeezed Samsung Galaxy S10 and an iPhone 10. The frame can be disabled in the second row of the menu.
Facebook Messenger Screenshot
Facebook Messenger is available on facebook.com in the form of a small widget, on messenger.com as a full sized chat interface and also as individual mobile apps for all common operating systems. It supports voice and video calls, instant messages where the users can exchange photos, stickers, videos and files, as well as react to with emojis and interact with bots.
It has a simple design where you can see your own messages in blue speech bubbles and the others' in grey. The interface shows the friend's avatar and name but not yours.
Capture Skype Conversation
Skype (owned by Microsoft since 2011) is one of the most common telecommunications application on both mobile and desktop. Capture a Skype conversation screenshots easily.
This is the only chat with dark background.
Twitter and Tinder Chat capture
Twitter news and social network is mostly known for publicly shared short messages, known as "tweets" but we can also initiate one-on-one conversations with other members.
This location-based dating and social mobile app allows users to like or dislike (swipe left or right) other users based on their profile picture and a short bio. A messenger window pops up if there's a match (both parties liked each other).
WhatsApp and LinkedIn
WhatsApp is a free messaging and voice over internet protocoll service through mobile phone numbers. It supports one on one and group communication. The app is easily recognizable by its monochrome seamlessly repeating background showing all kind of objects on.
LinkedIn is the only chat in our list where both the sender and receiver avatars are listed on the left side. This is the most popular business and employment-oriented professional networking social media platform where users can engage into conversations on both the mobile app and website. The LinkedIn message screenshot generator is great to fake job interview chats and other business conversations.


Chat
Connecting...
Details
Web template by HTML5 UP
node server by martinsik
background particles.js by Vincent Garreau


ssl
Module
Module Summary
Description
This module contains interface functions for the SSL/TLS protocol. For detailed information about the supported standards see ssl(6).
DATA TYPES
The following data types are used in the functions for SSL:
- boolean() =
true | false
- option() =
-
socketoption() | ssl_option() | transport_option()
- socketoption() =
-
proplists:property()
The default socket options are [{mode,list},{packet, 0},{header, 0},{active, true}].
For valid options, see the inet(3) and gen_tcp(3) manual pages in Kernel.
- ssl_option() =
-
{verify, verify_type()}
| {verify_fun, {fun(), term()}}
| {fail_if_no_peer_cert, boolean()}
| {depth, integer()}
| {cert, public_key:der_encoded()}
| {certfile, path()}
| {key, {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey' | 'PrivateKeyInfo', public_key:der_encoded()}}
| {keyfile, path()}
| {password, string()}
| {cacerts, [public_key:der_encoded()]}
| {cacertfile, path()}
| {dh, public_key:der_encoded()}
| {dhfile, path()}
| {ciphers, ciphers()}
| {user_lookup_fun, {fun(), term()}}, {psk_identity, string()}, {srp_identity, {string(), string()}}
| {reuse_sessions, boolean()}
| {reuse_session, fun()} {next_protocols_advertised, [binary()]}
| {client_preferred_next_protocols, {client | server, [binary()]} | {client | server, [binary()], binary()}}
| {log_alert, boolean()}
| {server_name_indication, hostname() | disable}
| {sni_hosts, [{hostname(), [ssl_option()]}]}
| {sni_fun, SNIfun::fun()}
- transport_option() =
-
{cb_info, {CallbackModule::atom(), DataTag::atom(), ClosedTag::atom(), ErrTag:atom()}}
Defaults to {gen_tcp, tcp, tcp_closed, tcp_error}. Can be used to customize the transport layer. The callback module must implement a reliable transport protocol, behave as gen_tcp, and have functions corresponding to inet:setopts/2, inet:getopts/2, inet:peername/1, inet:sockname/1, and inet:port/1. The callback gen_tcp is treated specially and calls inet directly.
- CallbackModule =
atom()
- DataTag =
-
atom()
Used in socket data message.
- ClosedTag =
-
atom()
Used in socket close message.
- verify_type() =
verify_none | verify_peer
- path() =
-
string()
Represents a file path.
- public_key:der_encoded() =
-
binary()
ASN.1 DER-encoded entity as an Erlang binary.
- host() =
hostname() | ipaddress()
- hostname() =
string() - DNS hostname
- ip_address() =
{N1,N2,N3,N4} % IPv4 | {K1,K2,K3,K4,K5,K6,K7,K8} % IPv6
- sslsocket() =
opaque()
- protocol() =
sslv3 | tlsv1 | 'tlsv1.1' | 'tlsv1.2'
- ciphers() =
-
= [ciphersuite()] | string()
According to old API.
- ciphersuite() =
{key_exchange(), cipher(), MAC::hash()} | {key_exchange(), cipher(), MAC::hash(), PRF::hash()}
- key_exchange()=
rsa | dhe_dss | dhe_rsa | dh_anon | psk | dhe_psk | rsa_psk | srp_anon | srp_dss | srp_rsa | ecdh_anon | ecdh_ecdsa | ecdhe_ecdsa | ecdh_rsa | ecdhe_rsa
- cipher() =
rc4_128 | des_cbc | '3des_ede_cbc' | aes_128_cbc | aes_256_cbc | aes_128_gcm | aes_256_gcm | chacha20_poly1305
- hash() =
md5 | sha | sha224 | sha256 | sha348 | sha512
- prf_random() =
client_random | server_random
- srp_param_type() =
srp_1024 | srp_1536 | srp_2048 | srp_3072 | srp_4096 | srp_6144 | srp_8192
- SNIfun::fun()
= fun(ServerName :: string()) -> [ssl_option()]
- named_curve() =
sect571r1 | sect571k1 | secp521r1 | brainpoolP512r1 | sect409k1 | sect409r1 | brainpoolP384r1 | secp384r1 | sect283k1 | sect283r1 | brainpoolP256r1 | secp256k1 | secp256r1 | sect239k1 | sect233k1 | sect233r1 | secp224k1 | secp224r1 | sect193r1 | sect193r2 | secp192k1 | secp192r1 | sect163k1 | sect163r1 | sect163r2 | secp160k1 | secp160r1 | secp160r2
SSL OPTION DESCRIPTIONS - COMMON for SERVER and CLIENT
The following options have the same meaning in the client and the server:
- {protocol, tls | dtls}
Choose TLS or DTLS protocol for the transport layer security. Defaults to tls Introduced in OTP 20, DTLS support is considered experimental in this release. DTLS over other transports than UDP are not yet supported.
- {cert, public_key:der_encoded()}
The DER-encoded users certificate. If this option is supplied, it overrides option certfile.
- {certfile, path()}
Path to a file containing the user certificate.
- {key, {'RSAPrivateKey'| 'DSAPrivateKey' | 'ECPrivateKey' |'PrivateKeyInfo', public_key:der_encoded()}}
The DER-encoded user's private key. If this option is supplied, it overrides option keyfile.
- {keyfile, path()}
Path to the file containing the user's private PEM-encoded key. As PEM-files can contain several entries, this option defaults to the same file as given by option certfile.
- {password, string()}
String containing the user's password. Only used if the private keyfile is password-protected.
- {ciphers, ciphers()}
Supported cipher suites. The function cipher_suites/0 can be used to find all ciphers that are supported by default. cipher_suites(all) can be called to find all available cipher suites. Pre-Shared Key (RFC 4279 and RFC 5487), Secure Remote Password (RFC 5054), RC4 cipher suites, and anonymous cipher suites only work if explicitly enabled by this option; they are supported/enabled by the peer also. Anonymous cipher suites are supported for testing purposes only and are not be used when security matters.
- {eccs, [named_curve()]}
Allows to specify the order of preference for named curves and to restrict their usage when using a cipher suite supporting them.
- {secure_renegotiate, boolean()}
-
Specifies if to reject renegotiation attempt that does not live up to RFC 5746. By default secure_renegotiate is set to false, that is, secure renegotiation is used if possible, but it falls back to insecure renegotiation if the peer does not support RFC 5746.
- {depth, integer()}
Maximum number of non-self-issued intermediate certificates that can follow the peer certificate in a valid certification path. So, if depth is 0 the PEER must be signed by the trusted ROOT-CA directly; if 1 the path can be PEER, CA, ROOT-CA; if 2 the path can be PEER, CA, CA, ROOT-CA, and so on. The default value is 1.
- {verify_fun, {Verifyfun :: fun(), InitialUserState :: term()}}
-
The verification fun is to be defined as follows:
fun(OtpCert :: #'OTPCertificate'{}, Event :: {bad_cert, Reason :: atom() | {revoked, atom()}} | {extension, #'Extension'{}}, InitialUserState :: term()) -> {valid, UserState :: term()} | {valid_peer, UserState :: term()} | {fail, Reason :: term()} | {unknown, UserState :: term()}.
The verification fun is called during the X509-path validation when an error or an extension unknown to the SSL application is encountered. It is also called when a certificate is considered valid by the path validation to allow access to each certificate in the path to the user application. It differentiates between the peer certificate and the CA certificates by using valid_peer or valid as second argument to the verification fun. See the public_key User's Guide for definition of #'OTPCertificate'{} and #'Extension'{}.
If the verify callback fun returns {fail, Reason}, the verification process is immediately stopped, an alert is sent to the peer, and the TLS/SSL handshake terminates.
If the verify callback fun returns {valid, UserState}, the verification process continues.
If the verify callback fun always returns {valid, UserState}, the TLS/SSL handshake does not terminate regarding verification failures and the connection is established.
-
If called with an extension unknown to the user application, return value {unknown, UserState} is to be used.
Note that if the fun returns unknown for an extension marked as critical, validation will fail.
Default option verify_fun in verify_peer mode:
{fun(_,{bad_cert, _} = Reason, _) -> {fail, Reason}; (_,{extension, _}, UserState) -> {unknown, UserState}; (_, valid, UserState) -> {valid, UserState}; (_, valid_peer, UserState) -> {valid, UserState} end, []}
Default option verify_fun in mode verify_none:
{fun(_,{bad_cert, _}, UserState) -> {valid, UserState}; (_,{extension, #'Extension'{critical = true}}, UserState) -> {valid, UserState}; (_,{extension, _}, UserState) -> {unknown, UserState}; (_, valid, UserState) -> {valid, UserState}; (_, valid_peer, UserState) -> {valid, UserState} end, []}
The possible path validation errors are given on form {bad_cert, Reason} where Reason is:
- unknown_ca
-
No trusted CA was found in the trusted store. The trusted CA is normally a so called ROOT CA, which is a self-signed certificate. Trust can be claimed for an intermediate CA (trusted anchor does not have to be self-signed according to X-509) by using option partial_chain.
- selfsigned_peer
The chain consisted only of one self-signed certificate.
- PKIX X-509-path validation error
For possible reasons, see public_key:pkix_path_validation/3
- {crl_check, boolean() | peer | best_effort }
-
Perform CRL (Certificate Revocation List) verification (public_key:pkix_crls_validate/3) on all the certificates during the path validation (public_key:pkix_path_validation/3) of the certificate chain. Defaults to false.
- peer
- check is only performed on the peer certificate.
- best_effort
- if certificate revocation status can not be determined it will be accepted as valid.
The CA certificates specified for the connection will be used to construct the certificate chain validating the CRLs.
The CRLs will be fetched from a local or external cache. See ssl_crl_cache_api(3).
- {crl_cache, {Module :: atom(), {DbHandle :: internal | term(), Args :: list()}}}
-
Specify how to perform lookup and caching of certificate revocation lists. Module defaults to ssl_crl_cache with DbHandle being internal and an empty argument list.
There are two implementations available:
- ssl_crl_cache
-
This module maintains a cache of CRLs. CRLs can be added to the cache using the function ssl_crl_cache:insert/1, and optionally automatically fetched through HTTP if the following argument is specified:
- {http, timeout()}
-
Enables fetching of CRLs specified as http URIs inX509 certificate extensions. Requires the OTP inets application.
- ssl_crl_hash_dir
-
This module makes use of a directory where CRLs are stored in files named by the hash of the issuer name.
The file names consist of eight hexadecimal digits followed by .rN, where N is an integer, e.g. 1a2b3c4d.r0. For the first version of the CRL, N starts at zero, and for each new version, N is incremented by one. The OpenSSL utility c_rehash creates symlinks according to this pattern.
For a given hash value, this module finds all consecutive .r* files starting from zero, and those files taken together make up the revocation list. CRL files whose nextUpdate fields are in the past, or that are issued by a different CA that happens to have the same name hash, are excluded.
The following argument is required:
- {dir, string()}
Specifies the directory in which the CRLs can be found.
- max_handshake_size
-
Integer (24 bits unsigned). Used to limit the size of valid TLS handshake packets to avoid DoS attacks. Defaults to 256*1024.
- {partial_chain, fun(Chain::[DerCert]) -> {trusted_ca, DerCert} | unknown_ca }
Claim an intermediate CA in the chain as trusted. TLS then performs public_key:pkix_path_validation/3 with the selected CA as trusted anchor and the rest of the chain.
- {versions, [protocol()]}
TLS protocol versions supported by started clients and servers. This option overrides the application environment option protocol_version. If the environment option is not set, it defaults to all versions, except SSL-3.0, supported by the SSL application. See also ssl(6).
- {hibernate_after, integer()|undefined}
When an integer-value is specified, ssl_connection goes into hibernation after the specified number of milliseconds of inactivity, thus reducing its memory footprint. When undefined is specified (this is the default), the process never goes into hibernation.
- {user_lookup_fun, {Lookupfun :: fun(), UserState :: term()}}
-
The lookup fun is to defined as follows:
fun(psk, PSKIdentity ::string(), UserState :: term()) -> {ok, SharedSecret :: binary()} | error; fun(srp, Username :: string(), UserState :: term()) -> {ok, {SRPParams :: srp_param_type(), Salt :: binary(), DerivedKey :: binary()}} | error.
For Pre-Shared Key (PSK) cipher suites, the lookup fun is called by the client and server to determine the shared secret. When called by the client, PSKIdentity is set to the hint presented by the server or to undefined. When called by the server, PSKIdentity is the identity presented by the client.
For Secure Remote Password (SRP), the fun is only used by the server to obtain parameters that it uses to generate its session keys. DerivedKey is to be derived according to RFC 2945 and RFC 5054: crypto:sha([Salt, crypto:sha([Username, <<$:>>, Password])])
- {padding_check, boolean()}
-
Affects TLS-1.0 connections only. If set to false, it disables the block cipher padding check to be able to interoperate with legacy software.
WarningUsing {padding_check, boolean()} makes TLS vulnerable to the Poodle attack.
- {beast_mitigation, one_n_minus_one | zero_n | disabled}
-
Affects SSL-3.0 and TLS-1.0 connections only. Used to change the BEAST mitigation strategy to interoperate with legacy software. Defaults to one_n_minus_one.
one_n_minus_one - Perform 1/n-1 BEAST mitigation.
zero_n - Perform 0/n BEAST mitigation.
disabled - Disable BEAST mitigation.
WarningUsing {beast_mitigation, disabled} makes SSL or TLS vulnerable to the BEAST attack.
SSL OPTION DESCRIPTIONS - CLIENT SIDE
The following options are client-specific or have a slightly different meaning in the client than in the server:
- {verify, verify_type()}
-
In mode verify_none the default behavior is to allow all x509-path validation errors. See also option verify_fun.
- {reuse_sessions, boolean()}
Specifies if the client is to try to reuse sessions when possible.
- {cacerts, [public_key:der_encoded()]}
The DER-encoded trusted certificates. If this option is supplied it overrides option cacertfile.
- {cacertfile, path()}
-
Path to a file containing PEM-encoded CA certificates. The CA certificates are used during server authentication and when building the client certificate chain.
- {alpn_advertised_protocols, [binary()]}
-
The list of protocols supported by the client to be sent to the server to be used for an Application-Layer Protocol Negotiation (ALPN). If the server supports ALPN then it will choose a protocol from this list; otherwise it will fail the connection with a "no_application_protocol" alert. A server that does not support ALPN will ignore this value.
The list of protocols must not contain an empty binary.
The negotiated protocol can be retrieved using the negotiated_protocol/1 function.
- {client_preferred_next_protocols, {Precedence :: server | client, ClientPrefs :: [binary()]}}
{client_preferred_next_protocols, {Precedence :: server | client, ClientPrefs :: [binary()], Default :: binary()}} -
Indicates that the client is to try to perform Next Protocol Negotiation.
If precedence is server, the negotiated protocol is the first protocol to be shown on the server advertised list, which is also on the client preference list.
If precedence is client, the negotiated protocol is the first protocol to be shown on the client preference list, which is also on the server advertised list.
If the client does not support any of the server advertised protocols or the server does not advertise any protocols, the client falls back to the first protocol in its list or to the default protocol (if a default is supplied). If the server does not support Next Protocol Negotiation, the connection terminates if no default protocol is supplied.
- {psk_identity, string()}
-
Specifies the identity the client presents to the server. The matching secret is found by calling user_lookup_fun.
- {srp_identity, {Username :: string(), Password :: string()}
Specifies the username and password to use to authenticate to the server.
- {server_name_indication, HostName :: hostname()}
-
Specify the hostname to be used in TLS Server Name Indication extension. Is usefull when upgrading a TCP socket to a TLS socket or if the hostname can not be derived from the Host argument to ssl:connect/3. Will also cause the client to preform host name verification of the peer certificate public_key:pkix_verify_hostname(PeerCert, [{dns_id, HostName}])
during the x509-path validation. If the check fails the error {bad_cert, hostname_check_failiure} will be propagated to the path validation fun verify_fun - {server_name_indication, disable}
-
When starting a TLS connection without upgrade, the Server Name Indication extension is sent if possible that is can be derived from the Host argument to ssl:connect/3. This option can be used to disable that behavior.
NoteNote that this also disables the default host name verification check of the peer certificate.
- {fallback, boolean()}
-
Send special cipher suite TLS_FALLBACK_SCSV to avoid undesired TLS version downgrade. Defaults to false
WarningNote this option is not needed in normal TLS usage and should not be used to implement new clients. But legacy clients that retries connections in the following manner
ssl:connect(Host, Port, [...{versions, ['tlsv2', 'tlsv1.1', 'tlsv1', 'sslv3']}])
ssl:connect(Host, Port, [...{versions, [tlsv1.1', 'tlsv1', 'sslv3']}, {fallback, true}])
ssl:connect(Host, Port, [...{versions, ['tlsv1', 'sslv3']}, {fallback, true}])
ssl:connect(Host, Port, [...{versions, ['sslv3']}, {fallback, true}])
may use it to avoid undesired TLS version downgrade. Note that TLS_FALLBACK_SCSV must also be supported by the server for the prevention to work.
- {signature_algs, [{hash(), ecdsa | rsa | dsa}]}
-
In addition to the algorithms negotiated by the cipher suite used for key exchange, payload encryption, message authentication and pseudo random calculation, the TLS signature algorithm extension Section <IP_ADDRESS>.1 in RFC 5246 may be used, from TLS 1.2, to negotiate which signature algorithm to use during the TLS handshake. If no lower TLS versions than 1.2 are supported, the client will send a TLS signature algorithm extension with the algorithms specified by this option. Defaults to
[ %% SHA2 {sha512, ecdsa}, {sha512, rsa}, {sha384, ecdsa}, {sha384, rsa}, {sha256, ecdsa}, {sha256, rsa}, {sha224, ecdsa}, {sha224, rsa}, %% SHA {sha, ecdsa}, {sha, rsa}, {sha, dsa}, ]
The algorithms should be in the preferred order. Selected signature algorithm can restrict which hash functions that may be selected. Default support for {md5, rsa} removed in ssl-8.0
SSL OPTION DESCRIPTIONS - SERVER SIDE
The following options are server-specific or have a slightly different meaning in the server than in the client:
- {cacerts, [public_key:der_encoded()]}
The DER-encoded trusted certificates. If this option is supplied it overrides option cacertfile.
- {cacertfile, path()}
Path to a file containing PEM-encoded CA certificates. The CA certificates are used to build the server certificate chain and for client authentication. The CAs are also used in the list of acceptable client CAs passed to the client when a certificate is requested. Can be omitted if there is no need to verify the client and if there are no intermediate CAs for the server certificate.
- {dh, public_key:der_encoded()}
The DER-encoded Diffie-Hellman parameters. If specified, it overrides option dhfile.
- {dhfile, path()}
Path to a file containing PEM-encoded Diffie Hellman parameters to be used by the server if a cipher suite using Diffie Hellman key exchange is negotiated. If not specified, default parameters are used.
- {verify, verify_type()}
A server only does x509-path validation in mode verify_peer, as it then sends a certificate request to the client (this message is not sent if the verify option is verify_none). You can then also want to specify option fail_if_no_peer_cert.
- {fail_if_no_peer_cert, boolean()}
-
Used together with {verify, verify_peer} by an SSL server. If set to true, the server fails if the client does not have a certificate to send, that is, sends an empty certificate. If set to false, it fails only if the client sends an invalid certificate (an empty certificate is considered valid). Defaults to false.
- {reuse_sessions, boolean()}
Specifies if the server is to agree to reuse sessions when requested by the clients. See also option reuse_session.
- {reuse_session, fun(SuggestedSessionId, PeerCert, Compression, CipherSuite) -> boolean()}
Enables the SSL server to have a local policy for deciding if a session is to be reused or not. Meaningful only if reuse_sessions is set to true. SuggestedSessionId is a binary(), PeerCert is a DER-encoded certificate, Compression is an enumeration integer, and CipherSuite is of type ciphersuite().
- {alpn_preferred_protocols, [binary()]}
-
Indicates the server will try to perform Application-Layer Protocol Negotiation (ALPN).
The list of protocols is in order of preference. The protocol negotiated will be the first in the list that matches one of the protocols advertised by the client. If no protocol matches, the server will fail the connection with a "no_application_protocol" alert.
The negotiated protocol can be retrieved using the negotiated_protocol/1 function.
- {next_protocols_advertised, Protocols :: [binary()]}
List of protocols to send to the client if the client indicates that it supports the Next Protocol extension. The client can select a protocol that is not on this list. The list of protocols must not contain an empty binary. If the server negotiates a Next Protocol, it can be accessed using the negotiated_next_protocol/1 method.
- {psk_identity, string()}
Specifies the server identity hint, which the server presents to the client.
- {log_alert, boolean()}
If set to false, error reports are not displayed.
- {honor_cipher_order, boolean()}
If set to true, use the server preference for cipher selection. If set to false (the default), use the client preference.
- {sni_hosts, [{hostname(), [ssl_option()]}]}
If the server receives a SNI (Server Name Indication) from the client matching a host listed in the sni_hosts option, the specific options for that host will override previously specified options. The option sni_fun, and sni_hosts are mutually exclusive.
- {sni_fun, SNIfun::fun()}
If the server receives a SNI (Server Name Indication) from the client, the given function will be called to retrieve [ssl_option()] for the indicated server. These options will be merged into predefined [ssl_option()]. The function should be defined as: fun(ServerName :: string()) -> [ssl_option()] and can be specified as a fun or as named fun module:function/1 The option sni_fun, and sni_hosts are mutually exclusive.
- {client_renegotiation, boolean()}
- In protocols that support client-initiated renegotiation, the cost of resources of such an operation is higher for the server than the client. This can act as a vector for denial of service attacks. The SSL application already takes measures to counter-act such attempts, but client-initiated renegotiation can be strictly disabled by setting this option to false. The default value is true. Note that disabling renegotiation can result in long-lived connections becoming unusable due to limits on the number of messages the underlying cipher suite can encipher.
- {honor_cipher_order, boolean()}
- If true, use the server's preference for cipher selection. If false (the default), use the client's preference.
- {honor_ecc_order, boolean()}
- If true, use the server's preference for ECC curve selection. If false (the default), use the client's preference.
- {signature_algs, [{hash(), ecdsa | rsa | dsa}]}
-
The algorithms specified by this option will be the ones accepted by the server in a signature algorithm negotiation, introduced in TLS-1.2. The algorithms will also be offered to the client if a client certificate is requested. For more details see the corresponding client option.
- {v2_hello_compatible, boolean()}
- If true, the server accepts clients that send hello messages on SSL-2.0 format but offers supported SSL/TLS versions. Defaults to false, that is the server will not interoperate with clients that offers SSL-2.0.
General
When an SSL socket is in active mode (the default), data from the socket is delivered to the owner of the socket in the form of messages:
{ssl, Socket, Data}
{ssl_closed, Socket}
{ssl_error, Socket, Reason}
A Timeout argument specifies a time-out in milliseconds. The default value for argument Timeout is infinity.
Exports
cipher_suites() ->
cipher_suites(Type) -> ciphers()
Types
Returns a list of supported cipher suites. cipher_suites() is equivalent to cipher_suites(erlang). Type openssl is provided for backwards compatibility with the old SSL, which used OpenSSL. cipher_suites(all) returns all available cipher suites. The cipher suites not present in cipher_suites(erlang) but included in cipher_suites(all) are not used unless explicitly configured by the user.
eccs() ->
eccs(protocol()) -> [named_curve()]
Returns a list of supported ECCs. eccs() is equivalent to calling eccs(Protocol) with all supported protocols and then deduplicating the output.
PEM files, used by ssl API-functions, are cached. The cache is regularly checked to see if any cache entries should be invalidated, however this function provides a way to unconditionally clear the whole cache.
connect(Socket, SslOptions) ->
connect(Socket, SslOptions, Timeout) -> {ok, SslSocket}
| {error, Reason}
Types
Upgrades a gen_tcp, or equivalent, connected socket to an SSL socket, that is, performs the client-side ssl handshake.
connect(Host, Port, Options) ->
connect(Host, Port, Options, Timeout) ->
{ok, SslSocket} | {error, Reason}
Types
Opens an SSL connection to Host, Port.
close(SslSocket) -> ok | {error, Reason}
Types
Closes an SSL connection.
close(SslSocket, How) -> ok | {ok, port()} | {error, Reason}
Types
Closes or downgrades an SSL connection. In the latter case the transport connection will be handed over to the NewController process after receiving the TLS close alert from the peer. The returned transport socket will have the following options set: [{active, false}, {packet, 0}, {mode, binary}]
controlling_process(SslSocket, NewOwner) ->
ok | {error, Reason}
Types
Assigns a new controlling process to the SSL socket. A controlling process is the owner of an SSL socket, and receives all messages from the socket.
connection_information(SslSocket) ->
{ok, Result} | {error, Reason}
Types
Returns the most relevant information about the connection, ssl options that are undefined will be filtered out. Note that values that affect the security of the connection will only be returned if explicitly requested by connection_information/2.
connection_information(SslSocket, Items) ->
{ok, Result} | {error, Reason}
Types
Returns the requested information items about the connection, if they are defined.
If only undefined options are requested the resulting list can be empty.
format_error(Reason) -> string()
Types
Presents the error returned by an SSL function as a printable string.
getopts(Socket, OptionNames) ->
{ok, [socketoption()]} | {error, Reason}
Types
Gets the values of the specified socket options.
getstat(Socket) ->
{ok, OptionValues} | {error, inet:posix()}
getstat(Socket, OptionNames) ->
{ok, OptionValues} | {error, inet:posix()}
Types
Gets one or more statistic options for the underlying TCP socket.
See inet:getstat/2 for statistic options description.
listen(Port, Options) ->
{ok, ListenSocket} | {error, Reason}
Types
Creates an SSL listen socket.
negotiated_protocol(Socket) -> {ok, Protocol} | {error, protocol_not_negotiated}
Types
Returns the protocol negotiated through ALPN or NPN extensions.
peercert(Socket) -> {ok, Cert} | {error, Reason}
Types
The peer certificate is returned as a DER-encoded binary. The certificate can be decoded with public_key:pkix_decode_cert/2.
peername(Socket) -> {ok, {Address, Port}} |
{error, Reason}
Types
Returns the address and port number of the peer.
prf(Socket, Secret, Label, Seed, WantedLength) -> {ok, binary()} | {error, reason()}
Types
Uses the Pseudo-Random Function (PRF) of a TLS session to generate extra key material. It either takes user-generated values for Secret and Seed or atoms directing it to use a specific value from the session security parameters.
Can only be used with TLS connections; {error, undefined} is returned for SSLv3 connections.
recv(Socket, Length) ->
recv(Socket, Length, Timeout) -> {ok, Data} | {error,
Reason}
Types
Receives a packet from a socket in passive mode. A closed socket is indicated by return value {error, closed}.
Argument Length is meaningful only when the socket is in mode raw and denotes the number of bytes to read. If Length = 0, all available bytes are returned. If Length > 0, exactly Length bytes are returned, or an error; possibly discarding less than Length bytes of data when the socket gets closed from the other side.
Optional argument Timeout specifies a time-out in milliseconds. The default value is infinity.
renegotiate(Socket) -> ok | {error, Reason}
Types
Initiates a new handshake. A notable return value is {error, renegotiation_rejected} indicating that the peer refused to go through with the renegotiation, but the connection is still active using the previously negotiated session.
send(Socket, Data) -> ok | {error, Reason}
Types
Writes Data to Socket.
A notable return value is {error, closed} indicating that the socket is closed.
setopts(Socket, Options) -> ok | {error, Reason}
Types
Sets options according to Options for socket Socket.
shutdown(Socket, How) -> ok | {error, Reason}
Types
Immediately closes a socket in one or two directions.
How == write means closing the socket for writing, reading from it is still possible.
To be able to handle that the peer has done a shutdown on the write side, option {exit_on_close, false} is useful.
ssl_accept(Socket) ->
ssl_accept(Socket, Timeout) -> ok | {error, Reason}
Types
Performs the SSL/TLS server-side handshake.
Socket is a socket as returned by ssl:transport_accept/[1,2]
ssl_accept(Socket, SslOptions) ->
ssl_accept(Socket, SslOptions, Timeout) -> {ok, Socket} | ok | {error, Reason}
Types
If Socket is a socket(): upgrades a gen_tcp, or equivalent, socket to an SSL socket, that is, performs the SSL/TLS server-side handshake and returns the SSL socket.
The listen socket is to be in mode {active, false} before telling the client that the server is ready to upgrade by calling this function, else the upgrade succeeds or does not succeed depending on timing.
If Socket is an sslsocket(): provides extra SSL/TLS options to those specified in ssl:listen/2 and then performs the SSL/TLS handshake.
sockname(Socket) -> {ok, {Address, Port}} |
{error, Reason}
Types
Returns the local address and port number of socket Socket.
start() ->
start(Type) -> ok | {error, Reason}
Types
Starts the SSL application. Default type is temporary.
Stops the SSL application.
transport_accept(ListenSocket) ->
transport_accept(ListenSocket, Timeout) ->
{ok, NewSocket} | {error, Reason}
Types
Accepts an incoming connection request on a listen socket. ListenSocket must be a socket returned from ssl:listen/2. The socket returned is to be passed to ssl:ssl_accept[2,3] to complete handshaking, that is, establishing the SSL/TLS connection.
The socket returned can only be used with ssl:ssl_accept[2,3]. No traffic can be sent or received before that call.
The accepted socket inherits the options set for ListenSocket in ssl:listen/2.
The default value for Timeout is infinity. If Timeout is specified and no connection is accepted within the given time, {error, timeout} is returned.
versions() -> [versions_info()]
Types
Returns version information relevant for the SSL application.
- app_vsn
- The application version of the SSL application.
- supported
- TLS/SSL versions supported by default. Overridden by a version option on connect/[2,3,4], listen/2, and ssl_accept/[1,2,3]. For the negotiated TLS/SSL version, see ssl:connection_information/1.
- available
- All TLS/SSL versions supported by the SSL application. TLS 1.2 requires sufficient support from the Crypto application.
SEE ALSO
inet(3) and gen_tcp(3)


A mixin, providing event listening capabilities to an object. This is an inversion-of-control with regards to regular event listening; the listener maintains a list of the events it is listening to. This allows the listener to remove some or all its event listeners, for instance when it is disabled or destroyed. This is an easy way to avoid leaking listeners. Caveat: don't mix eventEmitter.removeEventListener and eventListener.stopListening throughout a project, as that could result in memory leaks.
- Source:
Methods
-
listenTo(eventEmitters, eventNames, callback [, context])
-
Start listening to an event on a specified event emitting object. Both eventEmitters and eventNames arguments can be arrays. The total amount of listeners added will be the Cartesian product of the two lists.
Parameters:
Name Type Argument Description eventEmitters
Object | Array | NodeList One or more event emitters that will be listened to.
eventNames
string | Array One or more string identifiers for events that will be listented to.
callback
function The function that will be called when the event is emitted.
context
any <optional>
The context with which the callback will be called (i.e. what "this" will be).
Will default to the caller of .listenTo, if not provided.- Source:
-
stopListening( [eventEmitter] [, eventName])
-
Stop listening to events. If no arguments are provided, the listener removes all its event listeners. Providing any or both of the optional arguments will filter the list of event listeners removed.
Parameters:
Name Type Argument Description eventEmitter
Object <optional>
If provided, only callbacks attached to the given event emitter will be removed.
eventName
string <optional>
If provided, only callbacks attached to the given event name will be removed.
- Source:


Some, such as Sleep and Love, were never human. From this class an individual daemon is allotted to each human being as his ‘witness and guardian’ through life.
— C. S. Lewis (1898–1963), The Discarded Image
A great Daemon… Through him subsist all divination, and the science of sacred things as it relates to sacrifices, and expiations, and disenchantments, and prophecy, and magic… he who is wise in the science of this intercourse is supremely happy…
— Plato (c.427–347 B.C.), The Symposium, in the translation by Percy Bysshe Shelley (1792–1822)
To medieval philosophers, daemons were the intermediaries of God, hovering invisibly over the world and interfering with it. They may be guardian spirits of places or people. So also with Inform: a daemon is a meddling spirit, associated with a particular game object, which gets a chance to interfere once per turn while it is ‘active’. ‘Advent’ has five: one to deplete the lamp's batteries, three to move the bear, the pirate and the threatening little dwarves and one to close the cave when all the treasures have been collected. Though there isn't much to say about daemons, they are immensely useful, and there are some rule-based design systems for interactive fiction in which the daemon is a more fundamental concept than the object. (The early 1980s system by Scott Adams, for instance.)
The daemon attached to an object is its daemon
routine, if one is given. However, a daemon is normally inactive, and
must be explicitly activated and deactivated using the library
routines
StartDaemon(object); StopDaemon(object);
Daemons are often started by a game's Initialise
routine and sometimes remain active throughout. When active, the daemon
property of the object is called at the end of each turn, regardless
of where that object is or what the circumstances, provided only that
the player is still alive. This makes daemons useful for ‘tidying-up
operations’, putting rooms back in order after the player has moved
on, or for the consequences of actions to catch up with the player.
•▲
EXERCISE 42
Many games contain “wandering monsters”, characters who
walk around the map. Use a daemon to implement one who wanders as freely
as the player, like the gentleman thief in ‘Zork’.
•▲
EXERCISE 43
Use a background daemon to implement a system of weights, so that the
player can only carry a certain weight before strength gives out and
something must be dropped. It should allow for feathers to be lighter
than lawn-mowers.
· · · · ·
It's also possible to attach a timer to an object.
(In other design languages, timers are called “fuses”.)
To set up a timer, you need to give an object two properties:
time_left
and time_out
. Like daemons, timers
are inactive until explicitly started:
StartTimer(object, time);
will set object.time_left
to time
.
This value will be reduced by 1 each turn, except that if this would make
it negative, the Inform library instead sends the message
object.time_out()
once and once only, after which the timer is deactivated
again. You're free to alter time_left
yourself: a value
of 0 means “will go off at the end of the present turn”,
so setting time_left
to 0 triggers immediate activation.
You can also deactivate the timer, so that it never goes off, by calling
StopTimer(object);
•
EXERCISE 44
Construct an egg-timer which runs for three turns.
▲
At most 32 timers or daemons can be active at the same time, together
with any number of inactive ones. This limit of 32 is easily raised,
though: just define the constant MAX_TIMERS
to some larger
value, putting the definition in your code before "Parser.h"
is included.
· · · · ·
There is yet a third form of timed event. If a
room provides an each_turn
routine, then the library
will send the message
location.each_turn()
at the end of every turn when the player is present.
Similarly, for every object O
which is near the player
and provides each_turn
:
O.each_turn()
will be sent every turn. This would be one way to
code the sword of ‘Zork’, for instance, which begins to
glow when monsters are nearby. each_turn
is also convenient
to run creatures which stay in one place and are only active when the
player is nearby. An ogre with limited patience can therefore have an
each_turn
routine which worries the player (“The
ogre stamps his feet angrily!” and so forth) while also having
a timer set to go off when patience runs out.
▲
“Near the player” actually means “in scope”,
a term which will be properly defined in §32
but which roughly translates as “in the same place and visible”.
You can change the scope rules using an InScope
routine,
say to make the ‘Zork I’ thief audible throughout the
maze he is wandering around in. In case you want to tell whether scope
is being worked out for ordinary parsing reasons or instead for each_turn
processing, look to see whether the scope_reason
variable
has the value EACHTURN_REASON
. (Again, see
§32 for more.)
▲
It is safe to move an object when its own each_turn
rule
is running, but not to move any other objects which are likely to be
in scope.
•
EXERCISE 45
(‘Ruins’.) Make “the sound of scuttling claws”
approach in darkness and, after 4 consecutive turns in darkness, kill
the player.
•▲
EXERCISE 46
Now try implementing the scuttling claws in a single object definition,
with no associated code anywhere else in the program, not even a line
in Initialise
, and without running its daemon
all the time.
· · · · ·
The library also has a limited ability to keep track
of time of day as the game goes on. The current time is held in the
variable the_time
and runs on a 24-hour clock: this variable
holds the number of minutes since midnight, so it takes values between
0 and 1439. The time can be set by
SetTime(
60 × ‹hours› + ‹minutes›,
‹rate› );
The rate
controls how rapidly time
is moving: a rate
of 0 means it is standing still, that
is, that the library doesn't change it: your routines still can.
A positive rate
means that that many minutes pass between
each turn, while a negative rate means that many turns pass between
each minute. It's usual for a timed game to start off the clock by
calling SetTime
in its Initialise
routine.
The time will appear on the game's status line, replacing the usual
listing of score and turns, if you set
Statusline time;
as a directive at the start of your source code.
•
EXERCISE 47
How could you make your game take notice of the time passing midnight,
so that the day of the week could be nudged on?
•▲
EXERCISE 48
Make the lighting throughtout the game change at sunrise and sunset.
· · · · ·
▲ Here is exactly what happens at the end of each turn. The sequence is abandoned if at any stage the player dies or wins.
each_turn
takes place for the current room,
and then for every object in scope.TimePasses
is called,
if the game provides such a routine.moved
attribute, and score is awarded
if appropriate (see §22).•▲
EXERCISE 49
Suppose the player is magically suspended in mid-air, but that anything
let go of will fall out of sight. The natural way to code this is to
use a daemon which gets rid of anything it finds on the floor: this
is better than trapping Drop
actions because objects
might end up on the floor in many different ways. Why is each_turn
better still?
•
EXERCISE 50
How would a game work if it involved a month-long archaeological dig,
where anything from days to minutes pass between successive game turns?
•
REFERENCES
Daemons abound in most games. Apart from ‘Advent’, see
the flying tortoise from ‘Balances’ and the chiggers from
‘Adventureland’. For more ingenious uses of daemon
,
see the helium balloon and the matchbook from ‘Toyshop’.
•Typical timers include the
burning match and the hand grenade from ‘Toyshop’, the
endgame timer from ‘Advent’ and the ‘Balances’
cyclops (also employing each_turn
).
•‘Adventureland’
makes much use of each_turn
: see the golden fish, the mud,
the dragon and the bees.
•The chapter of ‘Jigsaw’
set on the Moon runs the clock at rate −28, to allow for
the length of the lunar day.
•The library extension
"timewait.h" by Andrew Clover thoroughly implements
time of day, allowing the player to “wait until quarter past
three”.
•Whereas Erik Hetzner's
"printtime.h" does just the reverse: it prints out
Inform's numerical values of time in the form of text like “half
past seven”. Erik is also author of "timepiece.h",
which models watches and clocks, allowing them to run slow or fast
compared to the library's absolute notion of time. (As yet nobody has
needed a relativistic world model.)


You can add one or multiple Alpha models to your classic algorithm and place the orders using Insight
objects without a Portfolio Construction model. To receive the collection of Insight
objects in a your classic algorithm, implement the InsightsGenerated
event handler:
public override void Initialize() { AddAlpha(new EmaCrossAlphaModel()); InsightsGenerated += OnInsightsGenerated; } private void OnInsightsGenerated(IAlgorithm algorithm, GeneratedInsightsCollection insightsCollection) { var insights = insightsCollection.Insights; }
def Initialize(self): self.AddAlpha(EmaCrossAlphaModel()) self.InsightsGenerated += self.OnInsightsGenerated def OnInsightsGenerated(self, algorithm: IAlgorithm, insights_collection: GeneratedInsightsCollection) -> None: insights = insights_collection.Insights


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Git
Dear Linus,
Thank you so much for this tremendous product you have bestowed upon the world. Your commitment towards sharing one of the greatest collaborative coding tools for free is heroic. Git is a version control system for tracking changes in computer files and coordinating work between multiple users.
Your seamless integration with Github makes for a magical pairing. Using Git from the command line is such a powerful and fun experience. Understanding Git has helped me understand so much more about the workings of the web. Thank you for all you do.
Sincerely,
Aidan


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Notes


nips nips2003 nips2003-43 nips2003-43-reference knowledge-graph by maker-knowledge-mining
Source: pdf
Author: Reto Wyss, Paul F. Verschure
Abstract: One current explanation of the view independent representation of space by the place-cells of the hippocampus is that they arise out of the summation of view dependent Gaussians. This proposal assumes that visual representations show bounded invariance. Here we investigate whether a recently proposed visual encoding scheme called the temporal population code can provide such representations. Our analysis is based on the behavior of a simulated robot in a virtual environment containing speciﬁc visual cues. Our results show that the temporal population code provides a representational substrate that can naturally account for the formation of place ﬁelds. 1
[1] J. O’Keefe and J. Dostrovsky. The hippocampus as a spatial map: preliminary evidence from unit activity in the freely moving rat. Brain Res, 34:171–5, 1971.
[2] J. O’Keefe and L. Nadel. Oxford, 1987. The hippocampus as a cognitive map. Clarendon Press,
[3] J. Knierim, H. Kudrimoti, and B. McNaughton. Place cells, head direction cells, and the learning of landmark stability. J. Neursci., 15:1648–59, 1995.
[4] J. O’Keefe and N. Burgess. Geometric determinants of the place ﬁelds of hippocampal neurons. Nature, 381(6581):425–8, 1996.
[5] J. O’Keefe, N. Burgess, J.G. Donnett, K.J. Jeﬀrey, and E.A. Maguire. Place cells, navigational accuracy, and the human hippocampus. Philos Trans R Soc Lond B Biol Sci., 353(1373):1333–40, 1998.
[6] N. Burgess, J.G. Donnett, H.J. Jeﬀrey, and J. O’Keefe. Robotic and neuronal simulation of the hippocampus and rat navigation. Philos Trans R Soc Lond B Biol Sci., 352(1360):1535–43, 1997.
[7] R. Wyss, P. K¨nig, and P.F.M.J. Verschure. Invariant representations of visual patterns o in a temporal population code. Proc. Natl. Acad. Sci. USA, 100(1):324–9, 2003.
[8] K. Zhang, I. Ginzburg, B.L. McNaughton, and T.J. Sejnowski. Interpreting neuronal population activity by reconstruction: Uniﬁed framework with application in hippocampal place cells. J Neurophysiol., 79(2):1017–44, 1998.
[9] A. Arleo and W. Gerstner. Spatial cognition and neuro-mimetic navigation: a model of hippocampal place cell activity. Biol Cybern., 83(3):287–99, 2000.
[10] G. Quirk, R. Muller, and R. Kubie. The ﬁring of hippocampal place cells in the dark depends on the rat’s recent experience. J. Neursci., 10:2008–17, 1995.
[11] A. Hughes. A schematic eye for the rat. Visual Res., 19:569–88, 1977.


This is the Scanpy benchmark for the Cell Ranger R analysis of Zheng et al., Nat. Comm. (2017) available from https://github.com/10XGenomics/single-cell-3prime-paper. Compare the Scanpy version with the Cell Ranger version of this notebook.
The pbmc64k data is freely available [page/file] from the 10x homepage or from the previous GitHub link.
%config InlineBackend.figure_formats = ['retina'] # increase resolution on retina screens
import numpy as np
import scanpy as sc
sc.sett.verbosity = 0 # increase for more output
sc.sett.set_dpi(80) # low pixel number yields small inline figures
sc.sett.file_format_figures = 'png' # set this to 'svg' (notebook) or 'pdf' (files) if you want vector graphics
sc.sett.savefigs = False # set to True if you want to save figures to `./figs/`
Output Scanpy version and initial usage of memory.
print('Running Scanpy version', sc.__version__, 'on', sc.logging.get_date())
sc.logging.print_memory_usage()
Only use the first n cells, set to 0 if you want all cells.
use_first_n_samples = 0
full_sparse = False
Set the file paths.
filename_data = './data/fresh_68k_pbmc_donor_a_filtered_gene_bc_matrices/hg19/matrix.mtx'
filename_genes = './data/fresh_68k_pbmc_donor_a_filtered_gene_bc_matrices/hg19/genes.tsv'
filename_barcodes = './data/fresh_68k_pbmc_donor_a_filtered_gene_bc_matrices/hg19/barcodes.tsv'
Load the data. This takes a long time only when first reading the raw data from the .mtx
text file. It's very fast after that.
%%time
adata = sc.read(filename_data).transpose()
adata.var_names = np.loadtxt(filename_genes, dtype='S')[:, 1]
adata.smp_names = np.loadtxt(filename_barcodes, dtype='S')
sc.logging.print_memory_usage()
Reduce the number of samples for scaling information.
if use_first_n_samples != 0:
adata = adata[:use_first_n_samples]
Per-cell normalize the data matrix $X$ and identify highly-variable genes.
%%time
sc.pp.filter_genes(adata, min_counts=1) # only consider genes with more than 1 count
sc.pp.normalize_per_cell(adata) # normalize with total UMI count per cell
filter_result = sc.pp.filter_genes_dispersion(adata.X, flavor='cell_ranger', n_top_genes=1000, log=False)
sc.logging.print_memory_usage()
Plot the dispersion relation.
sc.pl.filter_genes_dispersion(filter_result, log=True)
Compute PCA. Can be sped up considerably by setting zero_center = False
below.
%%time
adata.filter_var(filter_result['gene_filter']) # filter genes
sc.pp.normalize_per_cell(adata) # need to redo normalization after filtering
sc.pp.log1p(adata) # log transform: X = log(X + 1)
sc.pp.scale(adata, zero_center = not full_sparse)
sc.tl.pca(adata, n_comps=50, zero_center = not full_sparse)
sc.logging.print_memory_usage()
Compute tSNE.
%%time
sc.tl.tsne(adata)
sc.logging.print_memory_usage()
Let us use the cell type labels generated by Zheng et al. by correlating gene expression with purified bulk data.
filename_labels = './data/storage/icbTTTdata/lukas.simon/DropFilesHere/PBMC68k.cellLables.txt'
bulk_labels = np.loadtxt(filename_labels, delimiter='\t', dtype='S')
adata.smp['bulk_labels'] = bulk_labels[:adata.n_smps]
from matplotlib import pyplot as pl
axs = sc.pl.tsne(adata, color='bulk_labels', size=0.05, show=False)
axs[0].legend(frameon=False, loc='center left', bbox_to_anchor=(1, 0.5),
markerscale=10)
pl.show()
# plot the PCA and tSNE representation
sc.pl.pca(adata, color='bulk_labels')
%%time
sc.tl.diffmap(adata)
sc.logging.print_memory_usage()
sc.pl.diffmap(adata, color='bulk_labels')
%%time
adata.add['xroot'] = adata.smp['X_pca'][np.where(adata.smp['bulk_labels'] == 'CD34+')[0][0]]
sc.tl.dpt(adata, n_branchings=1)
sc.logging.print_memory_usage()
sc.pl.dpt(adata, color='bulk_labels')


This is an interactive and animated version of the poster. If you prefer a downloadable static version, click here.
A representative method with this approach is called "molecular dynamics simulation". In this method, the motion of the particles is calculated from Newton’s equation of motion in the classical theory.
Let’s call matrix force to a matrix with N rows and N columns,
where each element in the row i and column j contains the value of the force
fij due to the interaction between particle i
and particle j of a system with N particles.
The calculation of the forces, consequence of particle’s interactions, is a crucial and time-expensive step in any molecular simulation. As the number of particles increases, the number of interactions does quadratically.
The CUDA technology for NVIDIA graphics cards provides a development interface to make programs that take advantage of the GPU’s processor calculation capacity. The CUDA architecture allows to implement functions (called kernels) to be executed by several threads simultaneously.
The CUDA programming model assumes a system composed of a host (cpu) and a device (gpu),
each with their own separate memory.
CUDA threads may access data from multiple memory spaces during their execution, for example:
Accessible only by the thread itself
Accessible to all threads within the same block
Accesible para todos los bloques.
In CUDA, the kernel is executed with the aid of threads. The thread is an abstract entity that represents the execution of the kernel. A kernel is a small program or a function. Every thread has an index, which is used for calculating memory address locations and also for taking control decisions.
Threads are grouped into thread blocks. There is a limit to the number of threads per block, since all threads of a block are expected to reside on the same processor core and must share the limited memory resources of that core.
Blocks are organized into a one-dimensional, two-dimensional, or three-dimensional grid of thread blocks.
We created a set of algorithms to calculate,
on the GPU, the matrix force for systems with different numbers
of particles. These algorithms were compared with each other.
and against other that does the same procedure but executed on
the CPU.
Only two computational optimizations were implemented for
the CPU algorithm: cutoff radius (the distance which the particles
are far enough apart to neglect the force between them) and the
use of Newton’s third law (which reduces to a half the number of
forces calculated)
All the algorithms that we created to run on GPU apply the
same strategy respect the use of available memory spaces in this
technology: inside the kernel, each thread copies the necessary
data from global memory to the shared memory. Once the threads
of a block have finished their work, the results are sent back to the
global memory. If it is possible, input parameters of functions are
sent at the constant memory space.
The main difference between the algorithms for GPU in this
study, consists in the format of the grid used in each kernel for
calculate the matrix force.
Algorithm A uses a 1D grid with 1D blocks, using a single thread to reduce a complete row in the matrix of forces, applying only the cutting radius optimization.
Algorithm A* uses a technique that consists by using the same grid as many times are necessary (block-stride technique), allowing to send a smaller grid to avoid the problem of thread limits.
Algorithm B uses a 2D grid with 2D blocks, using one row of threads of each block to work on reducing two complete rows of the matrix force, applying the cutting radius optimization and the Newton’s third law optimizations.
Algorithm B* uses a technique that
consists by using the same grid as many times are necessary (block-stride technique),
allowing to send a smaller grid to avoid the problem of thread limits.
In this case, was possible to apply the cutting radius and the Newton’s third law optimizations.
Algorithm C reuses the idea of algorithm A*, but for a 1D grid with 2D blocks, using one row of threads of each block to work on reducing a complete row of the matrix force.
Algorithm D, in experimental stage, uses an identical grid from the algorithm C, but the blocks were programmed to go through the matrix force in a staggered way, with the aim of taking advantage of Newton’s third law as optimization.
The comparison showed that algorithms that use the block stride technique are more efficient than those that do not. Our implementation of Newton’s third law as optimization to calculate the matrix force on GPU, achieves an evident advantage in systems with a large number of particles


{% extends "layout_bsa.html" %} {% block page_title %} Pay an NHS Penalty Charge Notice {% endblock %} {% block content %} Pay an NHS Penalty Charge Notice How would you like to receive your payment confirmations and receipts? Tick all that apply Get a copy of your prepayment details sent by text message and email By text By email I do not wish to recieve payment reminders or receipts Cancel {% endblock %}
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Hi! I'm Andrew Ek. This is where I write about things like software development, teaching, learning, organizational communication, and other things. I'm so glad you're here.
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Hi! I'm Andrew Ek. This is where I write about things like software development, teaching, learning, organizational communication, and other things. I'm so glad you're here.
Subscribe to my newsletter or follow me on twitter, if you like.


--- layout: default script: /assets/script/makeown.js permalink: /generator minSize: 5 maxSize: 20 defaultSize: 12 ---
The width and height can be changed using the two dropdown boxes
in the options section.
Currently the minimum size is {{ page.minSize }}
and the maximum size is {{ page.maxSize }}
.
The default size is {{ page.defaultSize }}
.
Size will not automatically update, you will have to click generate
yourself for an update.
To add words to the word list just type a new word in the new word input box
located in the options section.
All words currently in the list are available in the current word list section
under the options section
New words are not automaticly added to the generated output and you will have to click generate
yourself.
To remove words from the current list just click the corresponding X
.
By having shuffle
turned on, the algorithm will shuffle to word list before placing the words.
See Handling Words
To generate the word search click the generate
button.
The algorithm has 5 attempts to place the word.
If it is unable to place a word then the Missing words
section will appear.
Words can be placed in the following orientation vertical
, horizontal
and diagonal
.
| {% endfor %} |


The conversion of PathQuery To Cypher effectively & accurately is crucial for the Neo4j prototype of InterMine. This post provides a brief overview of Path Query & Cypher and gives you an insight on how we plan to query the InterMine Neo4j database. In upcoming posts, the conversion approach will be discussed.
Introduction
If you have read my previous post, you would have an idea of what InterMine is, a data warehousing system which stores complex biological data. Now, one of the main features of InterMine is its fast & flexible querying ability. After all what is the point of storing the data if you can’t retrieve it as per your requirements, fast enough! :)
So, there are two parts to an InterMine data warehouse, front-end and back-end. The new front-end of InterMine is called BlueGenes and is being developed in the BlueGenes Repository. In order to retrieve any data from InterMine, users need to submit some information about the data to BlueGenes. For example, give me all the Experiments in which, the Notch gene in organism Drosophila participates. Now based on this information, BlueGenes generates a Path Query. The back-end part processes this Path Query and returns the required data. You should give a try to the BlueGenes Query Builder, it makes building Path Queries easier, plus the UI is cool.
Path Query
If you would like a detailed explanation about Path Queries, you can find it at The PathQuery API docs. Here I am presenting a much shorter version. First, lets look at a simple PathQuery example.
These three lines of XML make up a PathQuery which says, for all the Genes which have the length greater than 12345, give me their Symbols. The PathQuery consists of the following parts.
-
Paths
- In the example,Gene.symbol
,Gene.length
are paths. Paths can be of any arbitrary length, e.g.Protein.gene.homologues.homologue.alleles.alleleClass
is also a valid Path. -
Views
- These are the attributes that we want to retrieve from the database. First line in the example shows theview
part. -
Constraints
- These are used restrict the matching values i.e. to filter the data. In the example, the second line is the constraint part which saysGene.length > 12345
.
As I mentioned, I am not presenting other PathQuery parts line JOINSs, Sort Order etc to keep it simple. If you want to get in detail of PathQuery, you are welcome to checkout The PathQuery API docs.
Querying Neo4j Database
The goal of the project this summer, is to build a prototype of InterMine which uses Neo4j database at the backend. Now, there are three possible ways to query a Neo4j database.
The first two can only be used for creating embedded Neo4j applications i.e. they work when your application runs on same JVM as the Neo4j database instance. In other words, the developed Java application (based on Core Java API or Traversal) and the Neo4j database must reside on the same server.
On the other hand, Cypher runs on Bolt Protocol which is a client-server protocol designed for database applications. It allows a client to send statements, each consisting of a single string and a set of typed parameters. The server responds to each request with a result message and an optional stream of result records. The massive advantage of this protcol is that, the Neo4j database and the client application need not be there on the same machine. So, I can run the client side application on my machine and run the queries on a database running on any machine on the planet, if it is connected to the Internet. How awesome is that! ^_^
Although, Core Java API & Traversal framework are a bit faster than Cypher, we decided to go with Cypher because of this advantage. Now let’s discuss a bit about Cypher before moving further.
Cypher
The Cypher Query Language (CQL) aka Cypher is a declarative language that is used to query the Neo4j graph database. Again, if you wanna go in detail, checkout Neo4j Developer Manual. I am barely touching the surface here. So, here is a simple Cypher query example.
This Cypher query asks Neo4j engine to match all the nodes which are labelled as Genes, and if their length is greater than 12345, then return their symbols. Yeah, this is similar to what the PathQuery example above says. The only difference is that this is in the context of a Graph Database and that was in the context of InterMine which is based on a relational database.
PathQuery To Cypher
Now, we know that the InterMine front-end creates PathQueries which are processed by the IM Path Query Service. Also, the InterMine Neo4j Graph is queried using Cypher. So, in order for BlueGenes to query Neo4j, we need to somehow convert the Path Query into Cypher.
Since the paths in the path query can get arbitrarily big and many other components like JOINs, Sort Order, Constraints are there to add to the complexity, the conversion of Path Query to Cypher is not a trivial task. The converter should convert ANY path query of ANY complexity to cypher. Turns out that this is the hardest and the most time consuming part of the project.
In the next part, I am going to cover the approach that we are going to use for PathQuery to Cypher conversion. So stay tuned!


The year is 2284.
Earth is no longer habitable and humans live in various colonies on space stations, the Moon, and Mars.
All needs are provided for but life on the colonies is controlled and monitored by the corporations that run them.
There is an illusion of choice and freedom.
Keep your electric eye on me.


|
|
GLU ES v1.5 implementation notes
1. Missing functions
The functions gluBuild1DMipmapLevels(), gluBuild1DMipmaps(), gluBuild3DMipmaps(), gluBuild3DMipmaps() are missing because OpenGL ES 1.x doesn't support 1D and 3D textures. 1D texture nevertheless could be emulated as 2D texture with height equal to one.
2. Quadrics implementation notes
The following functions: gluCylinder(), gluDisk(), gluPartialDisk(), gluSphere() are using OpenGL ES arrays internally. After return from these functions color, vertex, texture and normal arrays are disabled, array pointers are
changed and must be reinstalled by caller to its original state.
Functions gluCylinder(), gluDisk(), gluPartialDisk(), gluSphere() now takes a GLfloat type instead of all GLdouble function arguments in the original GLU.
3. Tessellation objects implementation notes
All callbacks now using GLfloat for parameters instead of GLdouble as in the original GLU.
4. NURBS implementation notes
The notes below concern OpenGL ES 1.0 support only:
a) NURBS code internally queries current OpenGL ES matrices during rendering, so all queries for OpenGL ES matrices are performed through the GL_OES_query_matrix extension. GL_OES_matrix_get extension is not supported now, if your OpenGL ES 1.0 implementation provides GL_OES_matrix_get extension only, feel free to add support for it. Since GL_OES_query_matrix extension can query current matrix only, current matrix is switched internally in NURBS code and after NURBS function calls GL_MODELVIEW_MATRIX became current.
b) NURBS code queries current viewport settings, but in OpenGL ES 1.0 it is not possible to query current viewport settings. GLU ES implementation provides the following functions to workaround this issue:
void gluViewport(GLint x, GLint y, GLsizei width, GLsizei height); - the function parameters are identical to glViewport() function. Developer must call gluViewport() after each glViewport() function call, when GLU ES NURBS are used.
void gluGetIntegerv(GLenum pname, GLint* params); - the function parameters are identical to glGetIntegerv() function. Developer have to call gluGetIntegerv() function with GL_VIEWPORT as pname, if current viewport settings are required to be fetched. All other pnames are forwarded to glGetIntegerv().
void gluGetFloatv(GLenum pname, GLfloat* params); - the function parameters are identical to glGetFloatv() function in OpenGL ES 1.1 and above implementations. Only this pnames are supported: GL_MODELVIEW_MATRIX, GL_PROJECTION_MATRIX. When OpenGL ES 1.1 is used all other pnames are forwarded to glGetFloatv().
The notes below concern OpenGL ES 1.x support:
GLU ES v1.5 provides the following functions:
void gluEnable(GLenum cap); and void gluDisable(GLenum cap); to add compatibility with OpenGL.
GLU ES v1.5 provides the following defines:
GLU_MAP1_COLOR_4
GLU_MAP1_INDEX
GLU_MAP1_NORMAL
GLU_MAP1_TEXTURE_COORD_1
GLU_MAP1_TEXTURE_COORD_2
GLU_MAP1_TEXTURE_COORD_3
GLU_MAP1_TEXTURE_COORD_4
GLU_MAP1_VERTEX_3
GLU_MAP1_VERTEX_4
GLU_MAP2_COLOR_4
GLU_MAP2_INDEX
GLU_MAP2_NORMAL
GLU_MAP2_TEXTURE_COORD_1
GLU_MAP2_TEXTURE_COORD_2
GLU_MAP2_TEXTURE_COORD_3
GLU_MAP2_TEXTURE_COORD_4
GLU_MAP2_VERTEX_3
GLU_MAP2_VERTEX_4
GLU_AUTO_NORMAL
to be used in gluEnable() and gluDisable() functions.
|


{% extends "layout.html" %} {% block title %} New User {% endblock %} {% block content %}
Please provide your team and region, so we can show you relevant KPI evolutions for classifications.
I am a(n):
in:


“First we eat, then we do everything else.” -M.F.K. Fisher
When you first come in, you'll be greeted by our chefs, happy to share their favorite dishes!
Today, they have for you:
Just crab, salt, and a full feeling in your heart
Shredded pork lightly seasoned with chili powder and cooked crisp
Tender red beans, white rice all seasoned with fresh vegetables
Three types of peppers cooked to perfection
Just the right amount of char, the perfect kick, the taste of summer
Up next, you'll find our vegan kitchen, cooking up a storm.
Today, you'll be able to partake in:
Island spiced tofu with sauteed snap peas and peppers
Sweet and tart
Rich and nutty whole grains
If neither of those strike your fancy, there's always pizza coming straight from the oven, located to the right of the Rooted station.
Today, we've got these tasty pies by the fire:
Traditional Cheese Pizza
Tangy sauce, melted mozzarella, and crisp pepperoni
Pesto, tomatoes, and fresh mozzarella
A classic meat-lover's stromboli
There's always a couple of soups cooking, directly after the pizza station and just before the drinks. One will always be vegetarian.
Today we've got:
A medley of green beans, squash, and root vegetables that's perfect for bread-dipping
A rich, spicy meat and bean delight


MR. AHMED MUSTAFA, ESQ AHMED MUSTAFA LAW CHAMBERS LEGAL SOLICITORS/PRIVATE LAWYERS LONDON W1H 5AA Tel: 44-704-011-1788 EMAIL PLS REPLY TO THIS BOX<EMAIL_ADDRESS>My name is Ahmed Mustafa, Principal Partner in Ahmed Mustafa LawChambers, London, UK. I use to be a personal attorney to Mr. MohammedSaibi who was the chairman of Algosaibi Diving and Marine Services inDhahran, Saudi Arabia. Mr. Saibi died late last year of heart attack atthe ripe age of 79 years. Mr. Mohammed Saibi a Saudi Arabia Philanthropist, before he died, madea Will in my law firm stating that $5.2M (Five million, Two HundredThousand U.S. dollars only) should be donated to any charity home of ourchoice overseas as his last contribution to humanity when it becameobvious that he will not be alive for too long. His only son, RasheedSaibi and his entire family has no knowledge of this. However, I am verymuch aware that he has left enough wealth that will last his generation alife time. The true situation at the moment is that the said amount of money wasdeposited with a security company only to be paid out to a charity home.The charity home/organization would have to be picked by my law office.This implies that you will stand as the beneficiary to this Will so thatthe funds could be processed and transferred to your account if you areready and in a position to assist me. You do not need to have a charityorganization, all you need do is to declare your interest and showseriousness. The paper works to present you as the benficiary will be doneby me. I am particularly interested in securing this money from the Securitycompany because they have issued a notice instructing us to produce thebeneficiary of this Will as soon as possible, else the account would bemade dormant since Mr. Saibi was ill for a long period of time before hisdemise. If you are interested in assisting me, I will give you 30% of theentire funds after paying taxes due to your government and expenses duringthe course of this deal withdrawn from it. The balance will be minealthough I intend to send some of it to a charity organization. I urge you to contact me immediately for further details if you aresatisfied with my proposition and feel you are in a position to assist me.Bearing in mind the confidential nature of this transaction, I will prefer you respond through mail. Yours faithfully, Mr. Ahmed Mustafa Esq. For: Ahmed Mustafa Law Chambers.


| Created: | 5/25/2019 10:38:21 AM |
| Modified: | 5/30/2019 7:23:55 PM |
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| EventTimes | Class | Strong | To | |
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Contents
Short Descriptions
|
maintains a list of NFS exported file systems. |
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displays NFS client per-mount statistics. |
|
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is used to mount a network share using NFS |
|
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is used to mount a network share using NFSv4 |
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can be used to test for and retrieve configuration settings from a range of nfs-utils configuration files. |
|
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reports input/output statistics for network filesystems. |
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displays statistics kept about NFS client and server activity. |
|
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implements the NFS mount protocol on an NFS server. |
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implements the user level part of the NFS service on the server. |
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is used by the NFS file locking service. Run on both sides, client as well as server, when you want file locking enabled. |
|
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sets or clears the kernel's NFS client and server debug flags. |
|
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displays mount information for an NFS server. |
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is used to send Network Status Monitor reboot messages. |
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is a script called by nfsmount when mounting a filesystem with locking enabled, if statd does not appear to be running. It can be customised with whatever flags are appropriate for the site. |
|
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is used to unmount a network share using NFS |
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is used to unmount a network share using NFSv4 |


EC records 93 election offences in Tanjung Piai
PONTIAN, Nov 13 — A total of 93 election offences have been committed during the Tanjung Piai Parliamentary by-election since the campaign period started on November 2.
The Election Commission (EC) said the offences were recorded by the Election Campaign Enforcement Team (PP-KPR) and action have been taken based on visits and observations by the PP-KPR up to yesterday.
“A total of 80 offences involved putting up static campaign materials on restricted public premises which involve four contesting parties,” the EC said in a statement posted on its official Twitter account, here today.
Other offences were displaying campaign materials outside of Tanjung Piai parliamentary constituency, including provocative campaign materials, and also pertaining to ceramah (political talks), briefings, walkabouts and other campaign activities.
In addition, a total of 32 police reports has been lodged up to yesterday.
“Twenty reports were lodged over the viral video of a minister’s speech which was considered racist and against the election law,” said the EC.
Other reports were on other election offences, including the removal of unauthorised campaign materials and flags.
Also received were three reports made to the Malaysian Anti-Corruption Commission (MACC) involving special assistance to fishermen including Tanjung Piai fishermen and the distribution of sim cards during the ceramah by a contesting party.
According to the EC, 100 ceramah and campaign activities have been monitored by PP-KPR. — Bernama


10 secret tips to managing a remote team
15 Best Blogs To Follow About Web Design
Why We Love Webflow (And You Should, Too!)
14 Common Misconceptions About Web Design
The History Of Web Design
7 Ways To Improve Website Usability And Accessibility
20 Myths About Web Design
What Will Website Be Like In 100 Years?
10 Things Nobody Told You About Being a Web Designer
10 Web Design Blogs You Can't Miss
5 Principles Of Effective Web Design


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Erica Kait Creative
Pricing & Packages
Weddings | Portraits
Contact to Book
Weddings
Engaged? First of all, congratulations! Documenting weddings is something I am very passionate about. I want to help make this time as special for you as possible, and help you to avoid unnecessary stress. I strive to be upfront about my prices and what you will receive for your investment. I have three wedding packages to choose from. These prices are based in the Portland Metro area, but I'd love to talk to you more about travel pricing if your wedding takes place in another location!
Classic Package
Starts at $2500
- Up to 6 hours of wedding day coverage
- Timeline consultation
- At least 500 edited photos in an online gallery
Deluxe Package
Starts at $3000
- 7 hours of wedding day coverage
- Timeline consultation
- At least 600 edited photos in an online gallery
- Complimentary engagement session
Ultimate Package
Starts at $3600
- 8 hours of wedding day coverage
- Timeline consultation
- At least 700 edited photos in an online gallery
- Complimentary engagement session
- Up to 4 hours of second photography coverage
Additional time can be added to any of these packages on an hourly basis. Please contact me for more details regarding pricing. We can also discuss more options that include a second photographer on your wedding day. If you are interested in booking me, please contact me by email or phone so we can discuss your wedding in more detail. I'd love to sit down and chat about your expectations and vision for your day!
Portrait Packages
I offer many kinds of portrait sessions including senior photos, family photos, maternity sessions, engagement photos, and branding shoots. Below are the two main packages I offer. If you're interested in something more custom feel free to reach out to me directly and we can chat more about what you have in mind.
Mini Session
$350
- + 45-minute session
- + High resolution digital images
- + At least 50 edited photos in an online gallery
Portrait Session
$450
- + 90-minute session
- + 2nd location within 15 minutes of the first
- + 1 to 2 outfit changes
- + At least 100 edited photos in an online gallery


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{% set page_title = _("Too Many Requests") %} {% extends theme("layout.html") %} {% block content %}
{% trans %}In order to prevent brute force attacks on accounts we have limited the amount of requests on this route.{% endtrans %}
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{% extends "layout.html" %} {% set title = "Stats - OD-Database" %} {% set current_page = "stats" %} {% block body %}
Calculating...
| Database index size | |
|---|---|
| Query count | |
| Total query time | |
| Average time per query | |
| Total file count | |
| Size total | |
| Size average | |
| Size standard deviation | |
| Size standard deviation bounds (σ = 1) | |
| Size variance |


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Your SMS has been activated. Notifications are currently {{sms_notify|yesno:"ON,OFF"}} (Change notification options)
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{% if page.prereqs %}You may find it helpful to read the following pages before this one.


This internationally famous city need no introduction!
The Port of Los Angeles has been a major commercial port for over 100 years, and today, is still of vital economic importance to Southern California.
Position 33° 45'N, 118° 11'W. (Long Beach)
This is a Port of Entry.
Call the reporting station in advance of arrival. The CBP office is at the entrance to Long Beach Harbour which is just west of the huge Long Beach Shoreline marina.
Last updated November 2014.
As well as the marina in the port area, there are more facilities centred around the south-facing bay at Long Beach.
Last updated November 2014.


Money Play. Should Red redouble? If redoubled, should White take?
pips Red=131 White=81
(CorrectAnswer= 0/0, ErrorScore= 0)
Once more the broken prime does its work.
Coupled with this White has a very poor home board structure.
If you move one of White’s checkers on his 4-pt to his 6-pt then Red does not have a redouble. As it is his redouble is very powerful. White has a take because of his huge racing lead but it is no bargain and many of his moves will be forced – by no means ideal.
Not redoubling this position is a bad error as it is highly volatile.
Coupled with this White has a very poor home board structure.
If you move one of White’s checkers on his 4-pt to his 6-pt then Red does not have a redouble. As it is his redouble is very powerful. White has a take because of his huge racing lead but it is no bargain and many of his moves will be forced – by no means ideal.
Not redoubling this position is a bad error as it is highly volatile.
Cube analysis 2-ply cubeless equity +0.443 0.711 0.101 0.004 - 0.289 0.083 0.001 Cubeful equities: 1. No double +0.736 2. Double, pass +1.000 (+0.264) 3. Double, take +0.689 (-0.048) Proper cube action: No redouble, take (15.4%)


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Grape Labs is a tech start up founded by a group of passion driven entrepreneurs focused of delivering high quality, no compromise workshops and development kits. The seed for Grape Labs was sown in our early engineering college days when we banded together to participate (and win) in several State-level and National level tech competitions.
From the experience derived from making several projects, we realised that though the curriculum gives impetus to practical knowledge, the students need a platform to kindle the dormant 'engineer' in them. That's where we come into the picture.
We have also forayed into the apps market with our plethora of apps for engineering students. We are in the process of developing more of them in the near future.


Plugin Information |
|---|
View Chroot on the plugin site for more information. |
Support for disposable chroot environments (pbuilder), which can be very useful for C and C++ projects
Node Setup
On every node, where you want to run the plugin, you have to
- install pbuiler:
apt-get install pbuilder
- Allow jenkins to use pbuilder:
jenkins_user ALL=(ALL) NOPASSWD: /usr/sbin/pbuilder
Setup a Chroot Environment
Minimal Setup
Create chroot environments in Manage Jenkins > Chroot Environments:
Make sure that "Install Automatically" is selected, and is configured to use the "Create the chroot environment on demand" installer!
Advanced Setup
Adding repositories
You can add ppa's and standard repositories like universe. The plugin distinguishes between the two types by the Repository URL prefix. If it starts with deb, the repository is just added to /etc/apt/sources.list.d/ and the key is imported. If the URL starts with ppa, the repository is added via add-apt-repository (no keyfile is required).
Adding the universe repository
Name: universe
Repository URL: deb http://archive.ubuntu.com/ubuntu DISTRO universe
Keyfile URL: http://archive.ubuntu.com/ubuntu/project/ubuntu-archive-keyring.gpg
Make sure to select the correct distro of the chroot environment. By default a chroot environment similar to the host system where the node is running is created.
In the screenshot at the end of this section i have used lucid.
Adding ubuntugis ppa
Name: ubuntugis
Repository URL: ppa:ubuntugis/ubuntugis-unstable
The resulting repositories section should now look like this:
Using a Chroot Environment
Minimal Setup
After you have configured a Chroot-Environment, it can be used in the Chroot Buildstep in every job.
Make sure, that you restrict the job to nodes where pbuilder is configured.
Add a Chroot Buildstep:
Select the chroot environment and add the build instructions:
Chroot Environment: A list of the predefined chroot environments
Clear: The chroot environment (of the job) will be reset to the state of the predefined environment before every build ( better reproducability, slower build)
Login as root: The build comands will be run via the root unser inside of the environment (although it is inside the environment, be carefull what you do!)
Command: the build commands (uses bash per default)
Note, that all the jenkins specific environment varaibles are available!
Advanced Configuration
Requirement Files: Files which contain package dependencies (comparable to requirements.txt in the python world)
Requirements: Additional package dependencies, not listed in any requirement file
Ignore exit code: The build will always succeed, no mather if the build step fails or not.
Do not update repository indices: speeds up the build, but will not fetch and install the newest versions of the packages
Force installation of packages: allows the installation of unsigned packages (can be dangerous)
Run the job
After configuring a new chroot instance it will be built along with the first job which uses this environment. When launching the build, you will encounter something like this:
Here the two previously configured repositories (ubuntugis and universe) are added:
These steps are part of the initial creation of the environment, which can take a few minutes. They are only excuted once, if you add a completely new environment, or if you change the existing configuration in the Jenkins System configuration.
This is what we actually wanted to do in the build (as stated before, the $WORKSPACE variable was available inside the chroot environment):
Roadmap
- mock support is next
Changelog
Version 0.1.4
- add support for Ubuntu > 12.04
- better detection if the chroot binary is correctly set up for Jenkins
- correctly process additional chroot arguments with quotes
Version 0.1.2
- fixes a null pointer exception when building on a slave node
- uses 'local' copying of chroot image FilePaths, no more network involved
- removes useless tarBall field from ChrootToolsetProperty
- detects aborted/failed chroot environment initializations
Version 0.1.1
- adding description and wiki page to pom
Version 0.1
- initial release
- pbuilder support (mock not usable at the moment)
Attachments:
buildstep.png (image/png)
pbuilder_minimal_configuration.png (image/png)
pbuilder_advanced_configuration.png (image/png)
chroot_builder_minimal.png (image/png)
chroot_builder_advanced.png (image/png)
pbuilder_add_repositories.png (image/png)
restrict_build.png (image/png)
chroot_buildstep.png (image/png)
console_initializing_chroot.png (image/png)
chroot_builder_commands.png (image/png)
chroot_add_repositories.png (image/png)
console_initializing_chroot.png (image/png)


--- status: publish layout: page title: Discover - Imagery and Base Map Server author: display_name: Rick Kelson email<EMAIL_ADDRESS>tags: - base maps - discover - google - imagery published: true date: 2017-05-01 15:01:33 categories: [] ---
Everyone wanting to use the AGRC imagery and base map services from Discover needs to create a free account and receive a quad-word connection link.
To obtain access to Discover you will need to fill out one of the following forms (A or B):
Once either form is completed you will receive information about the services and URL links to access the Discover server (please only fill out one).
The URLs to access the server will contain a quad-word (ex. https://discover.agrc.utah.gov/login/path/your-unique-quad-word/
) unique to each user or organization. Discover is able to serve many different clients by exposing OGC compliant WMS, WMTS, and direct tile access services.
https://discover.agrc.utah.gov/login/path/{quad-word}/wms
https://discover.agrc.utah.gov/login/path/{quad-word}/wmts/1.0.0/WMTSCapabilities.xml
https://discover.agrc.utah.gov/login/path/{quad-word}/tiles/{service}/{z}/{x}/{y}
Utah
– Combination of the most recent 1-meter NAIP and 6-inch Google imagery with scale dependent rendering (licensed)
Google
– 6-inch statewide natural color aerial photography from Google collected within the last 3 years (licensed)
Google {year}archive
– Aerial photography blocks updated in Google
service and archived by acquisition year (licensed)
Basemap-Address_Points
– Base map of address point locations
Basemap-Hybrid
- Base map combination of the Overlay base map and Utah imagery service (licensed)
Basemap-Lite
– Base map of hillshade, HWYs/streets, cities, boundaries, etc. (gray, muted tone)
Basemap-Overlay
– Base map of vector features HWYs/streets, cities, address points, parcels, etc. (transparent background)
Basemap-Terrain
– Base map of hillshade, HWYS/streets, parks, forests, water, etc.
Basemap-Topo
– Base map of USGS topographic maps
DOQ 1990s BW
– 1-meter statewide black & white aerial photography collected in 1990’s
HRO 2012 RGB
– 12.5-cm natural color aerial photography collected in 2012 of the Wasatch Front
NAIP {year} RGB
– 1-meter statewide natural color aerial photography
NAIP {year} NRG
– 1-meter statewide color infrared aerial photography
Hillshade
– 10 meter statewide combined hillshade and slope
WMTS
for the best performance.


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