Uses of Class
org.apache.cayenne.map.DbRelationship
-
Packages that use DbRelationship Package Description org.apache.cayenne Contains persistence APIs directly accessible by users.org.apache.cayenne.access.translator.ejbql org.apache.cayenne.ashwood org.apache.cayenne.configuration org.apache.cayenne.configuration.xml org.apache.cayenne.dba Contains database adapter API (DbAdapter) and its default implementation.org.apache.cayenne.dba.hsqldb HSQLDB DbAdapter.org.apache.cayenne.dba.openbase OpenBase DbAdapter.org.apache.cayenne.dba.sqlite org.apache.cayenne.ejbql org.apache.cayenne.map Contains O/R mapping classes that store relational database metadata information and map it to Java classes. -
-
Uses of DbRelationship in org.apache.cayenne
Methods in org.apache.cayenne with parameters of type DbRelationship Modifier and Type Method Description ObjectId
DataRow. createTargetObjectId(String entityName, DbRelationship relationship)
Returns an ObjectId of an object on the other side of the to-one relationship, for this DataRow representing a source of relationship. -
Uses of DbRelationship in org.apache.cayenne.access.translator.ejbql
Methods in org.apache.cayenne.access.translator.ejbql that return DbRelationship Modifier and Type Method Description protected DbRelationship
EJBQLPathTranslator. chooseDbRelationship(ObjRelationship relationship)
Checks if the object relationship is flattened and then chooses the corresponding db relationship.Methods in org.apache.cayenne.access.translator.ejbql with parameters of type DbRelationship Modifier and Type Method Description protected void
EJBQLDbPathTranslator. processTerminatingRelationship(DbRelationship relationship)
-
Uses of DbRelationship in org.apache.cayenne.ashwood
Fields in org.apache.cayenne.ashwood with type parameters of type DbRelationship Modifier and Type Field Description protected Map<DbEntity,List<DbRelationship>>
AshwoodEntitySorter. reflexiveDbEntities
-
Uses of DbRelationship in org.apache.cayenne.configuration
Methods in org.apache.cayenne.configuration with parameters of type DbRelationship Modifier and Type Method Description T
BaseConfigurationNodeVisitor. visitDbRelationship(DbRelationship relationship)
T
ConfigurationNodeVisitor. visitDbRelationship(DbRelationship relationship)
Void
EmptyConfigurationNodeVisitor. visitDbRelationship(DbRelationship relationship)
-
Uses of DbRelationship in org.apache.cayenne.configuration.xml
Methods in org.apache.cayenne.configuration.xml that return DbRelationship Modifier and Type Method Description DbRelationship
DbRelationshipHandler. getDbRelationship()
-
Uses of DbRelationship in org.apache.cayenne.dba
Methods in org.apache.cayenne.dba with parameters of type DbRelationship Modifier and Type Method Description String
AutoAdapter. createFkConstraint(DbRelationship rel)
String
DbAdapter. createFkConstraint(DbRelationship rel)
Returns a SQL string that can be used to create a foreign key constraint for the relationship, or null if foreign keys are not supported.String
JdbcAdapter. createFkConstraint(DbRelationship rel)
Returns a SQL string that can be used to create a foreign key constraint for the relationship. -
Uses of DbRelationship in org.apache.cayenne.dba.hsqldb
Methods in org.apache.cayenne.dba.hsqldb with parameters of type DbRelationship Modifier and Type Method Description String
HSQLDBAdapter. createFkConstraint(DbRelationship rel)
Adds an ADD CONSTRAINT clause to a relationship constraint. -
Uses of DbRelationship in org.apache.cayenne.dba.openbase
Methods in org.apache.cayenne.dba.openbase with parameters of type DbRelationship Modifier and Type Method Description String
OpenBaseAdapter. createFkConstraint(DbRelationship rel)
Deprecated.Returns a SQL string that can be used to create a foreign key constraint for the relationship. -
Uses of DbRelationship in org.apache.cayenne.dba.sqlite
Methods in org.apache.cayenne.dba.sqlite with parameters of type DbRelationship Modifier and Type Method Description String
SQLiteAdapter. createFkConstraint(DbRelationship rel)
-
Uses of DbRelationship in org.apache.cayenne.ejbql
Methods in org.apache.cayenne.ejbql that return types with arguments of type DbRelationship Modifier and Type Method Description List<DbRelationship>
EJBQLCompiledExpression. getIncomingRelationships(String identifier)
Returns a collection of relationships that joins identifier with a parent entity. -
Uses of DbRelationship in org.apache.cayenne.map
Fields in org.apache.cayenne.map declared as DbRelationship Modifier and Type Field Description protected DbRelationship
DbJoin. relationship
Fields in org.apache.cayenne.map with type parameters of type DbRelationship Modifier and Type Field Description protected List<DbRelationship>
ObjRelationship. dbRelationships
Methods in org.apache.cayenne.map that return DbRelationship Modifier and Type Method Description DbRelationship
DbRelationship. createReverseRelationship()
Creates a new relationship with the same set of joins, but going in the opposite direction.DbRelationship
DbEntity. getRelationship(String relName)
DbRelationship
DbJoin. getRelationship()
DbRelationship
DbRelationship. getReverseRelationship()
Returns DbRelationship that is the opposite of this DbRelationship.Methods in org.apache.cayenne.map that return types with arguments of type DbRelationship Modifier and Type Method Description List<DbRelationship>
ObjRelationship. getDbRelationships()
Returns an immutable list of underlying DbRelationships.Map<String,DbRelationship>
DbEntity. getRelationshipMap()
Collection<DbRelationship>
DbEntity. getRelationships()
Returns a Collection of relationships from this entity or inherited.PathComponent<DbAttribute,DbRelationship>
DbEntity. lastPathComponent(Expression path, Map aliasMap)
Iterable<PathComponent<DbAttribute,DbRelationship>>
DbEntity. resolvePath(Expression pathExp, Map aliasMap)
Returns an Iterable instance over expression path components based on this entity.Methods in org.apache.cayenne.map with parameters of type DbRelationship Modifier and Type Method Description void
ObjRelationship. addDbRelationship(DbRelationship dbRel)
Appends a DbRelationship to the existing list of DbRelationships.ObjRelationship
ObjEntity. getRelationshipForDbRelationship(DbRelationship dbRelationship)
Returns ObjRelationship of this entity that maps todbRelationship
parameter.void
ObjRelationship. removeDbRelationship(DbRelationship dbRel)
Removes the relationshipdbRel
from the list of relationships.void
DbJoin. setRelationship(DbRelationship relationship)
Constructors in org.apache.cayenne.map with parameters of type DbRelationship Constructor Description DbJoin(DbRelationship relationship)
DbJoin(DbRelationship relationship, String sourceName, String targetName)
-


DevOps is a practice that works hand in hand with the Agile development methodologies, but more important, it is a technique that is fundamental in the management of Cloud environments.
Good DevOps practices will not only enhance the velocity to deliver your projects, knowing their way around Cloud, but also, they can bring significant savings, and scale through containerisation with "Docker".
Our DevOps engineers can quickly help you build a CI/CD pipeline and move it into production, ensuring you waste no time in connecting with your partners and customers.
Once you are live, we can ensure that your IT scales as your business grows.
To find out how to best utilise DevOps and Containerisation, book a free consultation now.


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--- layout: post status: publish published: true title: "师弟师妹，一路顺风" author: Leask author_login: leask author_email<EMAIL_ADDRESS>author_url: https://leaskh.com wordpress_id: 93 wordpress_url: http://leaskh.wordpress.com/2009/06/29/%e5%b8%88%e5%bc%9f%e5%b8%88%e5%a6%b9%ef%bc%8c%e4%b8%80%e8%b7%af%e9%a1%ba%e9%a3%8e date: '2009-06-29 16:53:46 +0800' date_gmt: '2009-06-29 16:53:46 +0800' categories: tags: [] comments: [] ---


Latitude
Plots
Toggle Dropdown
Max Temperature
Humidity
Cloudiness
Wind Speed
Comparison
Toggle Dropdown
Comparison
Data
Toggle Dropdown
Data
Comparison: Latitude vs. X
Click any plot to get an in depth analysis
vs. Max Temperature
Max Temperature
vs. Humidity
Humidity
vs. Cloudiness
Cloudiness
vs. Wind Speed
Wind Speed


In the Software page, you can Create/Update/Delete Softwares. In order to add a one, first select an appropriate Unit Type, enter the name, description, version number, browse for the binary file and finally upload the Software to the database. The version field is important as the contents of this field will be used in the actual upgrade process later. Typically, the version field should contain the exact name of the Software as instructed by the provider, including case-sensitivity and punctuation. The name field is an internal identifier for the given Software, and could be anything.
Export the Softwares you need to inspect by clicking the link for the desired Software. If you want to edit a specific Software, and delete another, you can do this in one step. Check the delete box, change the name and description of the other Software and hit "Save changes". You can also change the Software date, click the calendar icon and select a new date and hit "Save changes".


Read Me
2019-02-13
This script is a side project of the gbXML to JSON Lines project.
It is a work-in-progress continuation of manipulating JSON Lines files in useful ways.
Objectives
- Access large numbers of bookmarks by categories and tags
- View contents of many sites in a speedy fashion
- Categorize and tag bookmarks with ease and speed
Features include:
- Read JSON Lines files created by Opentecture Bookmarks Add-a-line
- Display tree menu of bookmarks with HTML details elements
- For every bookmark allow
- Display web page in an iframe
- Open web page in new tab
- Edit bookmark json
- Save edits to new file
Notes
- After editing a JSON bookmark, you must save to a file and then reload the page. Future release will be more convenient.
- Be sure to create and keep back up files of the data files
- Tags currently being used as catagories. This will change
- Does not yet handle file not found errors well
- Full TooToo13 capabilities to be added
- Comments, adding new bookmarks will happen in future releases


PyThaiNLP is a Python package for text processing and linguistic analysis, similar to nltk, with focus on Thai language.
PyThaiNLP is a Python package for text processing and linguistic analysis, similar to nltk
, with focus on Thai language.
$ pip install pythainlp
See PyThaiNLP GitHub


--- layout: page title: "A Universally Unique IDentifier (UUID) URN Namespace" description: "This specification defines a Uniform Resource Name namespace for UUIDs (Universally Unique IDentifier), also known as GUIDs (Globally Unique IDentifier). A UUID is 128 bits long, and can guarantee uniqueness across space and time. UUIDs were originally used in the Apollo Network Computing System and later in the Open Software Foundation's (OSF) Distributed Computing Environment (DCE), and then in Microsoft Windows platforms. This specification is derived from the DCE specification with the kind permission of the OSF (now known as The Open Group). Information from earlier versions of the DCE specification have been incorporated into this document." ---
| Document Name: | RFC 4122 |
|---|---|
| Document URI: |
urn:ietf:rfc:4122
|
| Online Version: |
https://datatracker.ietf.org/doc/html/rfc4122
|
| Organization: | Internet Engineering Task Force (IETF) |
| Series: | Request for Comments (RFC) |
| Abstract: | This specification defines a Uniform Resource Name namespace for UUIDs (Universally Unique IDentifier), also known as GUIDs (Globally Unique IDentifier). A UUID is 128 bits long, and can guarantee uniqueness across space and time. UUIDs were originally used in the Apollo Network Computing System and later in the Open Software Foundation's (OSF) Distributed Computing Environment (DCE), and then in Microsoft Windows platforms. This specification is derived from the DCE specification with the kind permission of the OSF (now known as The Open Group). Information from earlier versions of the DCE specification have been incorporated into this document. |
uuid
Return to ( Series | Organization | all Specifications )


Audio Test
This is a test of various audio things.
Drawbars:
| Envelope:
| General Controls: |
Now the tiny synth, which I am expanding:
Instrument Loaded Status: Not Loaded
Load MIDI file from local :
Loop :
MasterVol
ReverbLev
Quality :
Timbre :
Keyboard Channel:
Now SoundFont Test:
Load Soundfont file from local :


{% extends 'main/base.html' %} {% load static %} {% block content %}
Your notebook has not been shared or made public at this point.
 If you want to do so, you can log in and publish it in our collection of Personal Data Notebooks
Get startedYou want to know how shared notebooks look like? Here are some of the latest notebooks that community members have shared.
{{notebook.notebook_name}}
|
{%for tag in notebook.get_tags_json%} {{tag}} {%endfor%} {%for source in notebook.get_data_sources_json%} {{source}} {%endfor%} | {{notebook.updated_at|timesince}} ago |


{% block head %}{% endblock %}
Here you can preview the data that Profiles will produce before you publish it. This data comes straight from the Census files that are imported into the application or any csv files you many have uploaded.
Looking up values like this requires ALOT of server resources. In real life, we do all this processing in the background. It may take a moment for everything to load up so be patient. Try and use GeoName Search as much as possible!
GeoName Search: For various reason, Geography name search is VERY case/spelling sensitive. Cross your I's and dot your T's.
Test All Tracts: For performance reasons, "Test all Tracts" does not display mappings. This is because some Tracts are mapped to blocks and it is quite expensive to process those relationships. If you would like to explore how Census Tract is mapped in Profiles, Use the GeoName Search.
| Geography | {% for t in indicator.get_times %}{{t.name}} | {%endfor%}
|---|---|


#ftl output_format="HTML"> <#import "email_base.ftl" as email><EMAIL_ADDRESS>Hi ${recipient.name},
The dashboard ${dashboard.title} has been enabled.
You're enabled to configure the dashboard. Please visit ${hostname}/${dashboard.id}/config to customize it to your needs.
Kind regards,
Oversigt
@email.email>


{#- This file was automatically generated - do not edit -#} {% extends "base.html" %} {% block extrahead %} {% endblock %} {% block scripts %} {{ super() }} {% endblock %}


Laravel Documentations
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Eloquent: Collections
Eloquent: Mutators & Casting
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Encryption
Laravel Envoy
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{% extends "layout.html" %} {% block body %}
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|
Resource Role: AL RSA E1
Task Completed?
|
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| Resident | Room | Task | Instructions | Est. | Act. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
4:00PM - 4:30PM (Monday 11/06/2017) |
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| Young, Alice | (DNR) | 131 A | Fall Risk | no falls past 90 days. Once per shift status check for safety, report any changes to nursing. |
0 |
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| Lynch, Diane | 132 A | Fall Risk | no falls past 90 days | 0 |
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5:00PM - 5:30PM (Monday 11/06/2017) |
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| Howard, Selena |
(DNR) | 127 A | Eating | Assist with opening containers and cutting food as needed. |
0 |
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6:00PM - 6:30PM (Monday 11/06/2017) |
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| Lyons, Ken | (DNR) | 133 A | Fall Risk | Last fall 7/24/2016, once per shift status check for safety. Report any changes to RSD or nursing. |
0 |
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7:30PM - 8:00PM (Monday 11/06/2017) |
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| Young, Alice | (DNR) | 131 A | Grooming | Remind to groom. | 4 |
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| Young, Alice | (DNR) | 131 A | Dressing | Supervise clothes section and help dress/undress. |
15 |
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8:00PM - 8:30PM (Monday 11/06/2017) |
||||||||||||||
| Howard, Selena |
(DNR) | 127 A | Grooming | Resident is able to brush her own hair, teeth and wash upper body area. |
4 |
|||||||||
| Howard, Selena |
(DNR) | 127 A | Dressing | Needs assist with lower body dressing/undressing. |
7 |
|||||||||
10:00PM - 10:30PM (Monday 11/06/2017) |
||||||||||||||
| Community Task |
NA | Cleaning | Empty trash for all residents 100 hallway | 15 |


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ARTS 486 : Project 2
Emergent Interaction, Exquisite Corpse
This project called for partners to work together to create graphics while coming up with rules and guidelines for the exquisite corpse. My partner, Evangeline Kontos and I, decided to come up with an environment or landscape theme for the project instead of the traditional body figure of an exquisite corpse. After coming up with our rules, we worked on the graphics and the end result came out to work well together despite the mixing of styles.
Rules for our exquisite corpse:
- six cells, number order is in Z formation (reading left to right: 1, 2, 4, 3, 5, 6)
- overall dimensions in pixels:
- 1125 x 400
- 375 x 400
- 750 x 400
- 750 x 400
- 375 x 400
- 1125 x 400
- landscape/environment theme : sky, land, underwater
- use the same color palette to create a cohesive look
- any style of graphics are allowed; Vivienne: odd cells, Evangeline: even cells
- the design will not be randomized, we will be able to view each other's additions to the exquisite corpse throughout the process
- Pinterest moodboard


UNLV roundup: Freshman Bolanos sets program swim record
by Las Vegas Review-JournalUNLV freshman Panos Bolanos won the 200-yard backstroke at the TYR Invitational swim meet in a program-record time Sunday, highlighting the Rebels’ efforts on the final day of the three-day, five-team event in Evanston, Illinois.
Other teams competing were host Northwestern, Saint Louis, Simon Fraser and Toledo.
Bolanos’ time of 1 minute, 42.22 seconds is the NCAA’s sixth-fastest in the 200 backstroke this season.
Also for UNLV’s men, junior Richard Szilagyi was second in the 100 freestyle in 44.31 seconds, sophomore Michal Cukanow was third in the 200 butterfly in 1:48.62, and the 400 freestyle relay team of freshman Christopher Mykkanen, junior Sean Gage, Bolanos and sophomore Ivan Zukov placed third in 3:01.53.
For UNLV’s women, junior Caitlyn Schreiber won the 200 butterfly in 1:56.91 and teamed with junior Kate Afanasyeva and sophomores Julia Filippova and Carissa Armijo to place third in the 400 freestyle relay in 3:25.06.
Afanasyeva was second in the 100 freestyle in 50.52 seconds and second in the 100 backstroke in 53.67 seconds.


| Name | Role | Age | Location |
|---|---|---|---|
| Jane Donovan | UI Developer | 23 | Philadelphia, PA |
| Jonathan Smith | Designer | 30 | London, UK |
| Kelly Johnson | UX Developer | 25 | Los Angeles, CA |
| Sam Davidson | Programmer | 28 | Philadelphia, PA |
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Current Members
| Name | Role | Age | Location |
|---|---|---|---|
| Jane Donovan | UI Developer | 23 | Philadelphia, PA |
| Jonathan Smith | Designer | 30 | London, UK |
| Kelly Johnson | UX Developer | 25 | Los Angeles, CA |
| Sam Davidson | Programmer | 28 | Philadelphia, PA |
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My favorite things
These are a few of my favorite things
People
Here are some favorite people
Bob
My mom and dad:
dad
mom
Flavors of ice cream
Favorite, in order:
Chocolate
Coffee
Mint
Thanks for reading!


Over the last two months of phase 0, I've directed a number of questions at guides and pairing partners. Why isn't this passing rspec? What's wrong with my syntax? What am I doing? While these questions have been vital to my learning experience, I've also learned that there are best practices for asking questions in order to receive fruitful responses. In particular, I believe that specificity is key.
The first time I really thought about the specificity of my questions was during a tutoring session. In preparation, the tutor asked me to send her an email detailing what I wanted to cover.
At the time, I wanted to review attr_readers, attr_writers, and attr_accessors, but hadn't thought about what I wanted to ask about them. I understood their differences, but wasn't clear when it was more appropriate to use one or the other in a production environment. Following the tutor's email, I decided to frame my question in the context of real-life examples, to which the tutor responded with specific examples when you would want to use one over the others.
While it isn't always possible to ask a specific question—especially when everything is new and overwhelming—narrowing down your questions is conducive to receiving productive responses and promoting self-awareness in your own learning.


This example shows a forest plot approach to visualizing Phenome-Wide Association Study (PheWAS) results. This is useful when effect sizes (odds ratios or betas) and confidence intervals are available in the data set.
Data in this example plot is randomly generated. Phenotypes are listed vertically (unsorted) along the y2-axis with betas plotted along the x-axis. P-values are used to determine both size and color for points on the plot using an interpolated sequential scale.


The basic assumption behind mobile computing is that we are living through an age of internetification, similar to the age of electrification in the early 20th century.
Electricity evolved from a World’s Fair curiosity to an utility whose ubiquity and simple UI belies the stunning complexity of the electrical grid.
In the same way, today we are seeing internet connectivity evolve from flaky 56k modems towards the idea of wireless broadband as an utility whose presence you can simply assume.
Mobile web applications promise to leave behind desktop web applications in the same way that desktop web apps left behind native desktop apps.
The fundamental users and developers can take advantage of the conveniences provided by all the applications that are downloaded from the internet and continuously updated.
Similarly, the sheer convenience of having an app that is constantly in your hands at all times and that can change its state based on your location will overtake all the fancy widgets and the bigger screen brought by desktop web apps.
The reason is that human beings are mobile.
We are not sessile organisms confined to a single location for all our lives. If you look at every other technology ever developed, you’ll see that the ability to carry it around and use it in arbitrary locations vastly increases its utility and versatility.
Yishan Wong, Reddit CEO and former Facebook Director of Engineering
Diversity of Devices
Diversity of OSs
Diversity of APIs
| API Client | Client language |
|---|---|
| Mobile web | HTML/CSS/JS |
| iPhone/iPad | Objective-C |
| Android devices | Java |
| Windows devices | C# |
Just develop your mobile application by following this steps:


Rule Fields
The Rule type exposes the following members.
Fields
| Name | Description | |
|---|---|---|
| ActionsProperty |
Actions to run when this Validation rule evaluates
|
|
| CallbackProperty |
Property definition for Callback
|
|
| ElementProperty |
Property Definition for Element
|
|
| MaximumLengthProperty |
The maximum length property
|
|
| MaximumProperty |
Property Definition for Maximum
|
|
| MinimumLengthProperty |
The minimum length property
|
|
| MinimumProperty |
Property Definition for Minimum
|
|
| PropertyProperty |
Property definition for Property
|
|
| RegexProperty |
Property Definition for Regex
|
|
| ResultCallbackProperty |
Property definition for ResultCallback
|
|
| RuleNameProperty |
Property definition for RuleName
|
|
| UserDefinedProperty |
Definition for the UserDefined property
|
|
| ValidatorsProperty |
Property Definition for Validators
|


{% extends "layouts/_block_content.html" %} {% set page_title = "Not signed in" %} {% block main %}
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Since 1964, the proportion of WARM Days and STRONG WARM anomalies has risen from about 42% of the total to almost 67% of the total – an average increase of 0.5% per year. This trend, fitted with a generalized linear model, accounts for 40% of the year-to-year variation in warm versus cold anomalies, and is highly significant with a p-value approaching 0.0. Though we remain cautious about making predictions based on this model, it suggests that this yearly proportion of warm anomalies will regularly fall above 70% in the 2030's.
Global warming and climate change can both refer to the observed century-scale rise in the average temperature of the Earth's climate system and its related effects. More than 90% of the additional energy stored in the climate system since 1970 has gone into ocean warming; the remainder has melted ice, and warmed the continents and atmosphere.
Wikipedia
El Niño is the warm phase of the El Niño Southern Oscillation (commonly called ENSO). El Niño is accompanied by high air pressure in the western Pacific and low air pressure in the eastern Pacific. The cool phase of ENSO is called "La Niña" with SST in the eastern Pacific below average and air pressures high in the eastern and low in western Pacific. Typically, this anomaly happens at irregular intervals of two to seven years, and lasts nine months to two years.
Wikipedia


C is the OG programming language. First released in 1972 (That's 48 years ago!), this programming language has seen it all and stuck around.
This is a difficult language to start with for beginners, which will likely mean more time spent figuring out how the language works rather than being able to spend time learning the fundamentals of programming.
Learning this language is not going to be easy as the syntax is fairly dated, but past that should be pretty straightforward. Plus, learning this language will be a good foundation and base for learning other programming languages. Because it has been around since the beginning, its influence on other programming languages will be noticeable wherever you decide to go next. This aint yo mama's programming language (More like yo grandma's programming language).
C++ is a powerful language that can do many things, but is rather low level, meaning it is more difficult to "read." This means you will spend more time figuring out how the language itself works rather than how programming works.
Writing an application from scratch with C++ require a lot of code and is more difficult to manage. However, C++ is good at what it does and is often used for very resource intensive programs like AAA games. C++ is a good choice for computer software, mobile apps, video games, game engines, or even web applications.
C# (pronounced C-sharp) was developed by Microsoft for their .NET framework and is based on C and C++. It was designed to be simple and straightforward, which makes it an easier language to start on.
A high-level language (though not quite as high-level as, say, Python), it is designed to be easy to read, and the language itself takes care of a lot of the abstracts behind the scenes so your computer can deal with the code.
C# is the primary programming language of Microsoft and is also popular with game developers, so if you are interested in working for/with Microsoft, or getting into game development to use things like the Unity engine, this may be the language for you!
CSS (which stands for Cascading Styles Sheets) is the language many web designers and web developers use for the look and design of their websites. If HTML is the foundation and framework of a house, CSS is the siding, style, and paintjob. Together with javascript, these 3 language form the trinity of web development.
CSS is not considered by many to be a "proper" coding language, but nonetheless is essential in web development. If you are interested in building websites, CSS will be required. Luckily, CSS is a quick and easy language to learn the basics of, and is great for beginners because you can see your work immediately.
Another thing that makes CSS great is that you can learn enough in a few weeks to start picking up side jobs to practice and earn a little money on the side while you continue learning other languages, which will help pay the bills as well as deepen your portfolio for landing that entry-level front-end developer job down the road.
Python is one of the most beginner friendly programming languages available and is great for learning the fundamentals of coding. It is a high-level coding language, meaning it reads almost like English, so it is very intuitive and clean and decreases the amount of time you have to spend learning how the language itself works.
Python can be used for some very cool and versatile things, such as data mining, automation, machine learning, web applications, and game development.
Python is a very popular language and has many resources available to individuals interested in learning, and there is a strong community around Python that is ready and willing to help aspiring Python programmers.
Ruby is a very high-level programming language that has been around for 25 years. It is a creative programming language that often allows the user to find multiple solutions to a given problem. Using Ruby, you can see results fairly quickly and build sites surprisingly quickly, especially using something like the Ruby on Rails framework. This makes Ruby the most useful web development programming language for small businesses and startups to launch web applications as quickly as possible.
If small tech companies or startups are what you are interested in, Ruby is a good choice for a starter language. Just be sure that the companies you apply to are using Ruby.
Java is one of the most widely used and most popular programming languages in the world right now. It can be used for many types of applications, from mobile apps to entire desktop applications. As of June 2020, it had fallen to second place to C in the TIOBE Index.
Many aspects of Java come from C++, but it is a bit easier to learn for beginners. One selling point of Java is that it is designed to allow developers to write code that will work on entirely different devices, hence their slogan "write once, run anywhere."
Java is very popular for many types of applications, which makes Java one of the most in demand and highest paying programming languages you can learn. It is also one of the most useful programming languages for Android mobile development, so if you are interested in writing apps for Android phones, this is your ticket in.
Because Java is very versatile, it makes a great language to learn if you are not quite sure what you want to do with programming.It is a great asset for applying for initial coding jobs. While it is very useful and very versatile, it is not the easiest or most beginner friendly language out there (think Python or Ruby for that).
JavaScript is not the same thing as Java. JavaScript is used together with HTML to make websites interactive, interesting, and user-friendly. Nearly every webpage you navigate to uses JavaScript. It is one of the most popular web development programming languages out there and, consequently, is a good language to have on a resume.
Thera are multiple different frameworks and libraries (pre-made coding materials that the coder can just draw from for ease of use), including Vue, React, Angular, Ember, and Node. Each of these frameworks brings similar designs to the language, but in different ways. The introduction of Node allows the developer to create client side content as well, making JavaScript a full-stack language
If you want to develop websites, you have to learn JavaScript. But pair with HTML and CSS and you have the skills to create quite the web developer portfolio and land jobs in web development.
HTML (or Hypertext Markup Language) is used to create all websites and is the essential structural and content component of said sites. While HTML is also not technically a full "programming language," but a markup language, HTML is arguably the most important part of web development. The basics are very simple to learn and it is a great jumpoff point to coding and web development.Together with CSS and Javascript, you will be able to create some pretty amazing website.
In today's world, companies are gathering and storing more data than ever. SQL (or Structured Query Language) is the most common language used for managing all of this data stored in relational database management systems (RDBMS).
Big companies need programmers to analyze all of the data collected from customers and help them draw conclusions from it. Amazon, for instance, will take data about shopping trends from the year and create curated shopping content for the Christmas season as well as pre-pack the items that are most likely to sell, streamlining delivery for anyone that starts shopping early. This data is also why you pay significantly more money during big holidays to travel by plane.
If you enjoy looking at or analyzing data to form valuable conclusions, SQL may be the most useful language you can learn. Plus, mastering SQL and data management would make you a valuable asset to nearly every company and you will have no trouble landing a job.
Swift is a pretty young language developed by Apple in 2014, and is now the de facto programming langauge for all things iOS and OS X. With the rise in popularity of iPhone and cellphones in general, it makes sense that Swift would be so popular so quickly (though the support community is still relatively small compared to older languages). Swift shares a lot of things in common with Python and Ruby, making it very beginner-friendly and easy to use.
Because Apple is going nowhere anytime soon, if you are interested in developing apps for iPhones or Macs, you will need to learn Swift. It would also benefit you to pair what you learn with Objective-C in order to broaden your scope of iOS and OS X development.
Perl is a very powerful and very versatile programming language. Originally coming onto the scene in 1987, this language has been around for a while and has since split into two separate families of the language, Perl 5 and Perl 6. Perl was originally designed for text manipulation and processing, but has since staked ground in everything from web development to system administration. Perl can also be used on nearly every computer system on the planet, earning it the title "Swiss army knife of programming langauges."
Perl can be compared to multiple different languages for multiple different things. Many features are similar to C, Python, and PHP. However, it allows multiple solutions to a given problem unlike Python and PHP, and more similar to Ruby.
Perl also can seem a bit jumbled or crowded to a beginner programmer, but once you get the hang of it, it becomes much easier to learn.
Perl is also not as popular as many other languages on this list, and therefore if you choose Perl, you should make sure the company you are applying to actually uses Perl.
PHP is a scripting language working on the server side of web development projects written in HTML. It is relatively easy to learn, making it one of the most popular programming languages available and consistently landing it in the top 10 on the TIOBE Index. It is used by 80% of the top 10 million websites online, showing just how widely used it is.
Because PHP is a server side language, like Pyhton and Perl, it can be used to create things like login pages, photo galleries, discussion forums, etc. Some of the most popular websites in the world use PHP, such as Facebook, Tumblr, and Wordpress.
If you are looking into a career in web development, you can't do wrong choosing PHP. It is the most useful language for WordPress development and is a very safe choice if you plan to do freelance web development.


Education
I started my education at Lepic Primary School up until first grade
Afterwards I transfered to Kenvic Primary School since we moved to Ngong in '05.
After finishing my primary school education at Kenvic, I graduated to high school
and joined Starehe Boys' Centre and School for my four years of high school.
I am currently at Moringa School learning how to code.


--- layout: post status: publish published: true title: tmux dead on ssh exit in raspberry author: display_name: vishvendra login: vishvendra email<EMAIL_ADDRESS>url: '' author_login: vishvendra author_email<EMAIL_ADDRESS>wordpress_id: 473 wordpress_url: https://vishvendrasingh.com/?p=473 date: '2017-02-14 06:11:08 +0530' date_gmt: '2017-02-14 06:11:08 +0530' categories: - Linux - raspberry-pi tags: [] comments: [] ---
Hi there, if are facing dead tmux session on ssh exit issue on raspberry, here it requires libpam-systemd, which is not included by default in minimal Jessie. I rebooted to enable it, but you may only have to relogin and / or restart systemd-logind.service. Install it with command apt-get install libpam-systemd
systemctl --user status
output (without libpam-systemd): Failed to create bus connection: Connection refused
output (with libpam-systemd):
● raspberrypi
State: running
Jobs: 0 queued
Failed: 0 units
Since: Tue 2017-02-14 06:04:15 UTC; 4s ago
CGroup<EMAIL_ADDRESS>├─739 /lib/systemd/systemd --user
└─746 (sd-pam)


A problem I came across in my programming learning so far was when I had redesigned this site to make use of a responsive framework
and had set up some media queries that were supposed to alter the layout once my window reached mobile device width. I discovered
that in my desktop browser it would look fine and would resize appropriately once I had decreased the window size to the specified
pixel width but when I tried to view the site on my phone it looked horrible and was unreadable! To solve this problem I used a troubleshooting
approach, I carefully looked through the developer tools at what styles were being applied to the elements at the various widths. I was able
to compare these to a working example website and discovered that my styles were being applied in the correct manner as they were on that site.
Now I knew that the problem had to be some other missing element in my code that was controlling the display. This helped guide me
in a web search which quickly lead to the discovery that I was missing a meta tag for "viewport" that would specify the viewport width to be
the width of the device. After applying this meta tag my website displayed correctly, a very satisfying result, especially since I had found it
a little frustrating not understanding why my website was displaying differently with seemingly the same code as the example.
This turned out to be quite a good learning experience. It taught me a lot about how to use the developer tools to see where styles are inherited from
and helped cement my knowledge of the cascading nature of CSS. It also taught me about how mobile browsers render and scale web pages and therefore why
the viewport tag is important to have.
In this early stage of learning to program I'm beginning to understand how valuable simplicity is in code. It helps the program run efficiently
and also can make it easier to modify it in future to change the output. I still think I have a lot to work on as far as coding solutions that are
"DRY" but I was pleased with my approach to the chessboard coding problem in chapter 2 of the book "Eloquent JavaScript". To solve this problem I realised
I would need to print a line "n" number of times and each line would need to contain "n" characters. I also realised that to produce a chessboard each line
would have to have an alternating start character depending on if it was an odd or even line. I then created an outer loop that would run for how ever
many rows I wanted my board to have and for each row it would run a conditional statement to check if it was an odd or an even row. For an odd row it ran
one version of the loop and for an even row it ran another.
This was a relatively efficient way of solving the problem but I would still have liked to have refined this further.
I feel like I am building confidence with pseudocoding as a method of working out an approach to a coding problem and also troubleshooting where my code
is going wrong. I think for now I should probably actually write down my pseudocode as this will make it easier for me to analyse my approach to problems
and perhaps see where I can be more "DRY" in my code. I have also been pretty effective so far at debugging my code by looking at the error messages
returned in the console and also using the console to log the output of my code to see how it is processed. Googling is a resource I turn to often and
I have made the effort to learn search operators to get even better at targetting the information I need to solve problems, putting these into practice
is a work in progress!
I think I can improve on using the knowledge of my peers and teachers to solve problems and also gain a different perspective on how to approach them.
For the "fizzbuzz" problem I did search up some alternative solutions after I had completed mine and found some impressive solutions. This caused me to
reflect on some of the limitations of my approach such as the repeated elements of the code making it more time consuming to repurpose if the tests
were to change. This was a really useful lesson so I was glad for having spent the time reflecting on my solution.


For this project, we worked with NTT DATA to build an improved version of last year's team 24 project, a lab virtual assistant. It is a set of components which together allows a user to talk to an animated avatar backed by Alexa. The existing implementation requires a large amount of setup and also looks quite plain. There is also a lack of features the assistant can do.
We build upon their code to make the assistant more engaging to interact with, more configurable, as well as improving the existing installation process and adding extra features tailored for company usage.
We hope with our changes, the project will be more accessible to companies and encourage the use of virtual assistants in a working environment.
Note: We also have a third year student—Brandon Tan—working on this project at the same time. Our team and the third year student will focus on different tasks, and we will list requirements that are not ours separately.
The project is about building a digital avatar that is to be displayed on a lab TV/screen. Visitors and employees in the lab can interact with the assistant via voice commands. The assistant should be able to give the user an introduction to the lab and the company, and be able to handle different queries about the lab or the company.
For example, if the company organizes a VR workshop in the lab, after being led to the lab by reception, visitors should be able to ask the assistant about what happens next, where to go, etc. and possibly also have the assistant help demonstrate some of the VR features in the lab through videos.
NTT DATA is a global IT Innovator who deliver technology enabled services to clients. They have labs which often hold workshops and demos which many people attend. Our project aims to upgrade a virtual assistant which will be deployed in their labs.
Overall our goal is to improve the existing solution. After talking to the client, we established the 3 main goals for our project. Firstly, to make the assistant easier to install by creating scripts to automatically install some components and reducing the number of components needing to be installed. Secondly, make the assistant more professional and engaging. Lastly, give the assistant the ability to perform more tasks.
In our first meeting with the client, we asked about the requirements and were given some ideas of what we could achieve throughout this project. In the following meetings, we clarified and agreed on the requirements. The client occasionally added requirements throughout the project timeline.
Peter Jensen is a technology enthusiast who is attending a workshop at NTTDATA. He uses the assistant to find out what room his workshop is in and receive directions to get there. He is happy he is able to talk with the assistant naturally.
Joseph Richardson is an employee who manages the assistant. He is not familiar with complex programming so he wants a system that is easy to set up, configure and maintain. He found the lab assistant's set up to be very straightforward.
Given the nature of our project, all requirements are functional
Currently the avatar shows an empty background. We plan to implement a feature to match the background to the current weather.
Visitors to the lab should be able to ask the assistant where to go for a certain place or event, and the assistant should be able to show a map, along with voice directions.
Currently, setting up the assistant involves the deployment of multiple components. Ideally this should be improved to a one-click install and run.
Currently the assistant only has one 3D form. We aim to be able to support using multiple models, so that the company or the user can select the 3D avatar they like the most.
Currently the assistant only supports landscape mode. The assistant must be able to adjust accordingly to both landscape and portrait monitors/TV screens.
If the user has never used the assistant before, they may be confused what they can say. The assistant should prompt the user with things to ask.
The client suggested a monitoring interface to show usage of the assistant.
This would involve making the assistant able to control building lights, etc.
One of Brandon's major requirement, to make the mouth show the correct shape when Alexa is speaking.
Also one of Brandon's area, to make the avatar able to convey appropiate emotions to the user via facial features.
This could involve the use of some loading animation
We originally attempted to make the project runnable with just one installer which automatically supports both the Unity client and the Alexa client. We researched about how to make that possible.
For example, since we use Python, we wanted to "package" our python code such that user doesn't need to have Python installed or install any pip dependencies themselves. We found PyInstaller [1] which seemed like a viable option. It packages the application along with its dependencies and Python into a standalone executable, which is easy to install and run.
However, not all dependencies will work, especially if the Python package relies on native code that needs to be compiled. There is a list of supported packages, but it doesn't include pyaudio, for example. We did not attempt to build it since we decided to go with another approach later on.
Our first idea for how the navigation feature of the assistant should work was to prompt the user, setting up the assistant, to draw the maps to each room in a GUI. However, that seemed too time consuming and annoying for them, so we decided to automate this task, so the user should only upload an image of the floor plan. We researched about any existing libraries or algorithms that can help with this task.
After thorough research we did manage to find some existing solutions. However, none of these solutions were quite suitable for our case.
The ones we found about detecting rooms in an architectural floor plan were too complex to implement in the given time slot (see [2][3]).
The other option, we came up with, was to detect just the lines and their intersections and from the results, to calculate where the rooms are. However, in this case the solutions we found (like this one and this one) were either not quite accurate (detected a line twice or not detect it at all) or required too much processing power. [4]
As a final solution, we decided to develop our own algorithm for this problem.
[1] PyInstaller. [Online]. Available: https://www.pyinstaller.org/index.html [Accessed Mar. 14, 2021]
[2] H. Locteau, S. Macé, E. Valveny and S. Tabbone, "A System to Detect Rooms in Architectural Floor Plan Images", ACM International Conference Proceeding Series, 167-174, 10.1145/1815330.1815352, 2010. [Online]. Available: https://www.researchgate.net/publication/220933144_A_System_to_Detect_Rooms_in_Architectural_Floor_Plan_Images [Accessed Feb. 2, 2021]
[3] Z. Zeng, X. Li, Y. K. Yu and C. Fu, "Deep Floor Plan Recognition Using a Multi-Task Network With Room-Boundary-Guided Attention," 2019 IEEE/CVF International Conference on Computer Vision (ICCV), Seoul, Korea (South), 2019, pp. 9095-9103, doi: 10.1109/ICCV.2019.00919. Available: https://openaccess.thecvf.com/content_ICCV_2019/papers/Zeng_Deep_Floor_Plan_Recognition_Using_a_Multi-Task_Network_With_Room-Boundary-Guided_ICCV_2019_paper.pdf. [Accesssed Feb. 3, 2021]
[4] OpenCV. [Online]. Available: https://opencv.org/ [Accessed Feb. 5, 2021]
The assistant has no interactable buttons to press as it is fully voice controlled. The system will register if a user has been detected but not said a voice command and will suggest commands the user can say through speech bubbles coming out of the avatar. The configuration page is simple and clear, specifying exactly where everything should be inputted.
The assistant will be able to smoothly rotate its head/body to follow the user if they move within its camera range to show the system is aware of the user's presence. When the system is processing a user's voice command, the assistant will show a thinking pose to show the user that it has heard what they said and is processing.
The only interaction possible with the assistant is through voice, the speech bubbles that appear indicates to users that they must talk to the assistant to use it.
The way the commands are triggered all require the user to start with the hot word 'Alexa'. This is consistent for all commands. The commands also generally follow the same structure, for example for navigation, the user can ask "how do I get to x place" and replace the x with whichever room their destination is.
After gathering our requirements, we created hand-drawn sketches to explore the ways we could design the interface to integrate the design principles (visibility, feedback, affordance, consistency). Originally, we had 2 sets of sketches. After some user feedback, we decided to use these as our final sketches.
Using Balsamiq Cloud, we created an interactive prototype to show our design ideas and the interaction between the assistant and the user, here is the video. The speech bubbles represent voice commands from the user. (Note: the info button on the config page was added after the prototype evaluation)
We used an analytic evaluation by evaluating our prototype through heuristics.
| Location | Heuristic | Problem | Solution | Severity |
|---|---|---|---|---|
| Configuration page | Help and documentation | There is no guidance on how to setup the configuration page. | Create a help popup in the configuration page | 3 |
| Location | Visibility of system status | Once a voice command is inputted, there is no indication if the system is taking a while to respond or if it has crashed. | Have an animated thought bubble above avatar to represent that system is processing. | 2 |
| Location | Recognition rather than recall | User may forget how to activate or ask for some specific things from the assistant. | Display suggested questions if a user is detected but there is no input. | 2 |
Preece, J., Sharp, H., & Rogers, Y. (2019). Interaction design: beyond human-computer interaction, Wiley, 5th Edition Section 1.7.3
The decision to use Alexa is made by the previous year's student and we decided to build upon that. The system architecture had gone through some modification in order to simplify the use of our system.
As seen above, this project contains 3 separate but connected components, which together supports our Alexa integration. Essentially, user's queries are listened and sent by the Alexa client to the Alexa voice service to be processed by Amazon. If the user uses our skill, the Alexa voice service will send requests over https to our skill server, which will process the request and send the text response back to Alexa. It would also send control messages to the Unity front-end (which is the "UI" of this system) to facilitate video playing, lip sync, navigation, etc.
Unlike previously, the Alexa client now also runs on Windows, which means that running a Linux virtual machine on the client's Windows screen is no longer necessary. The Alexa client can run on the same operating system as the unity front-end.
The skill server is a Flask (Python) http(s) server. We used a "HTTP polling" approach (due to websocket library not working properly) for sending messages to Unity. Unity will periodically request /msg
, and the server will return the current state, which consists of what the current response is, whether Unity should play video, etc. as well as the timestamp of when the state was updated last.
For the Alexa client, we pulled the source of the official C++ Alexa client and slightly modified it to suit our system:
To communicate with Unity, we also wrote a Python script which is supposed to be run alongside the client, which starts up a local http server and use the same polling approach used in the skill server to let Unity get messages from it.
The official Alexa client does not contain hot word detection (recognizing when the user calls "Alexa" and hence start listening for query), so this is implemented by using an third-party library in the python script, and asking Alexa to start listening when we detected user saying "Alexa".
Finally, the Unity client uses basic C# code to talk with the two components above via HTTP(S).
After not being able to find a suitable existing solution for how to detect rooms on a floor plan, we developed our own. Here is how it works:
With this algorithm, heart-shaped rooms are detected as two rooms, instead of only one. To fix this, we added a loop that iterates through all the rooms and fixes these problems. If 2 rooms contain lines that are next to each other and the ranges of white pixels have at least one pixel in common the 2 rooms are combined into 1. The loop continues until it iterates consecutively through all the remaining rooms without having to combine any 2 of them.
[1] For fast checking which room a pixel belongs to, an array with length h*w is created (h-height of the picture, w-width of the picture) to store which room is each pixel assigned to. Pixel (x, y) would be indexed (y*h + x) in the array and it can easily be checked which room is it assigned to. When a range of white pixels and the room it belongs to are found, each element in the array, corresponding to a pixel in the range is updated with the room that is found.
To fully automate the set up for the navigation feature, after detecting where the rooms are, we needed to also get the best route to them. Here is how it is done:
To simplify skill server setup, we wrote a completely automated configuration script, which will build a Docker container with all the dependencies, get certificates from Let's Encrypt, and setup systemd services which will start the skill server on boot and allow it to run in background, removing the need for user to run "screen" themselves.
To simplify the client installation (Unity front-end and Alexa client), we pre-compiled everything that we can and packaged them as zip files, and linked to those packages in our user manual. This means that user doesn't need to have Unity installed, and they wouldn't need to wait for the Alexa client to compile either.
Configuration for the Unity front-end are read from a JSON file. We wrote a html page to generate such JSON file with a UI for some configuration changes, so that user doesn't need to manually modify JSON themselves.
For this task, we created a very Simple GUI where the user should just upload a picture of a floor plan and enter the names to each room.
One of our requirements was to improve the background. The client suggested a background that shows a different weather state depending on the real time weather.
The implementation of this mainly involves Unity scripts and calling a Weather API to receive information about the live weather. There is a coroutine in weatherControl.cs which calls the weather api using UnityWebRequests. Then using SimpleJSON to parse the JSON from the API, the system knows the weather.
There are many different weather states so the script groups them into 4 states: Clear, Clouds, Rain and Snow. Clouds, Rain and Snow share the same skybox of a cloudy background. Rain and Snow use particle systems to create their visual effects. Clear uses its own skybox with a clear sky.
The main Update() method of the script calls the coroutine every 10 minutes since the API is limited to 60 calls per minute and 1,000,000 calls per month.
The face tracking involves usage of a library called OpenCV plus Unity. The implementation of this library is the same as last year's team, linked here. To repeat, the user's face is detected using a webcam. The webcam view is split into 7 sections (columns). The user's face is located in 1 of the 7 sections and this value is returned from the script. The value is then used to control the assistant's rotation.
The player script works as follows: the script gets the value of the avatar's rotation and converts it to an integer. If this value is greater than 180, it means the avatar has rotated in the negative direction (since the rotation values Unity scripts receive are never negative) so 360 will need to be subtracted from the rotation value. If the value received from the face tracking script is not the same value as the angle of the avatar (they are set to map equally to each other), then the head and/or the body will keep rotating until it reaches the same value.
To ensure reliability, we wrote automated unit tests for the skill using our test Alexa client and a Unity unit test which uses the Unity test runner.
Given the nature of our project, user acceptance testing was very important. At the request of our client, we showed them our project every 2 weeks. Rather than only showing them the program all the way at the end, we had liaised with them regularly to conduct User Acceptance Testing. This allowed us to receive continuous feedback from our client and accommodate for any changes that they require, whether it may be incorrect outputs or the system simply not working.
| ID | Requirement | Priority | State | Contributors |
|---|---|---|---|---|
| 1 | Improved Background | Must | ✓ | Victoria |
| 2 | Navigation System | Must | ✓ | Kaloyan |
| 3 | Simplify Installation | Must | ✓ | Tingmao |
| 4 | Configurable 3D model | Must | ✓ | Tingmao |
| 5 | Portrait Mode Support | Must | ✓ | Victoria, Tingmao |
| 6 | Menu Screen | Must | ✓ | Kaloyan |
| 7 | Add branding | Should | ✓ | Victoria |
| 8 | Improved Face Tracking | Should | ✓ | Victoria |
| 9 | Improved Video Player | Should | ✓ | Tingmao |
| 10 | Reporting | Should | X | |
| 11 | IoT Integration | Could | X | |
| 12 | Change Language | Could | X | |
| Key Functionalities (must have and should have) | 90% completed | |||
| Optional Functionalities (could have) | 0% completed |
| ID | Bug Description | Priority |
|---|---|---|
| 1 | Alexa client is not always able to maintain sessions, causing users to need to say "Open Blue Assistant" again or "Ask Blue Assistant …" all the time | High |
| 2 | Alexa client is often unable to recognise asking for navigation directions (although the test client can) | High |
| 3 | Alexa may sometimes mishear the user | Low |
| 4 | Face detection often fails if the lighting where the user's face is located is too dark | Low |
| 5 | Face detection often glitches when there is more than 1 face detected | Low |
| Work packages | Tingmao | Kaloyan | Victoria |
|---|---|---|---|
| Client liaison | 30% | 30% | 40% |
| Requirement analysis | 33% | 33% | 34% |
| Research | 30% | 50% | 20% |
| UI design | 10% | 40% | 50% |
| Programming | 55% | 30% | 15% |
| Testing | 100% | 0% | 0% |
| Development Blog | 34% | 33% | 33% |
| Report Website Editing | 40% | 20% | 40% |
| Video Editing | 0% | 0% | 100% |
| Overall Contribution | 34% | 33% | 33% |
| Main Roles | Backend developer, Tester, Researcher | Frontend developer, Researcher | Frontend developer, UI designer, Report editor |
The interface is simple and since there is no need for any GUI, the main focus is to signal to the user that the system is voice controlled which has been completed through the speech bubbles appearing. When a video plays, the avatar moves to the side and is still in view from the user.
The main project goals have been achieved and the new functionalities we implemented are all working. The user can ask the assistant for directions, company info etc and the installation of the project onto a company's device has been greatly simplified. Although, if the hardware is not great, the Alexa client can struggle to pick up the user saying 'Alexa' or mishear their commands.
The back end of the assistant is run on Amazon's Alexa Voice Service which is used widely across the world so it is considerably stable. Although a poor internet connection may result in slower responses. We have removed the need to run a Linux virtual machine which improves the overall stability of the project. Hardware may also impact the project - poorer system hardware may cause the project to function poorly.
The face tracking feature does not work on Linux machines so the Unity front end should be ideally run on Windows (we have not tested MacOS but in principle it should work). The Alexa Client can be run on Linux (it is actually designed to be run on Linux), we have used mingw to allow it to run on Windows so it can be run on the same machine as the Unity front end without the need of a vm. The skill server can in principle be run on Windows but we did not test or investigate this.
The project has been documented with our user manual to assist with setting up and maintaining the project. The project can easily be extended to implement more features - with Amazon intents, the developer simply needs to add it to the Alexa skill and create a python file in the 'handled_intents' folder with the intent name.
The project was managed fairly well. We used 'Plan' in Microsoft Teams with an Agile method. The team would meet with the client on a fortnightly basis and the client would assign each team member a new sprint for the next 2 weeks. In the meetings, we would be able to do live demos and receive live feedback on the project. Since we also had a 3rd year student working on the project, the team kept in frequent contact with him through Teams.
The lip synchronisation is still not perfect, it assumes that each syllable takes the same amount of time so sometimes, the assistant’s lip synchronisation becomes quite out of sync with the voice output. If there was more time, this could be improved.
The project could be developed to move off Alexa which would allow for more control over the assistant – such as having a custom hotword and not requiring the user to open our skill to use the custom voice commands. The hotword detection is also slightly inconsistent, sometimes requiring the user to say ‘Alexa’ more than once for it to trigger but with a custom made voice controlled client, this can be more tailored. We could train a custom hot word detection.
Although we have simplified the installation, it could still be further simplified – our current solution still requires the user to install some dependencies such as Python, Java and msys2. Perhaps an installer could be created for the project to automatically carry out the steps documented in the user manual.
The software is an early proof of concept for development purposes and should not be used as-is in a live environment without further redevelopment and/or testing. No warranty is given and no real data or personally identifiable data should be stored. Usage and its liabilities are your own.
See a list of open source libraries & assets used
For ease of development, this project provides pre-compiled binaries made with Unity, usage of which are subject to restrictions in the Unity Software Additional Terms. This is not legal advice.


Web development was something that I had never considered in the past. Looking up all of the coding and understanding how to put it together looked daunting and overwhelming. When I got out of college I pursued my dream of owning a business. I Started out in basic jobs and trying to figure out what type of business to open. Always thinking about the arts and crafts that I enjoyed working on in my free time I believed I would build a business with arts crafts or sewing. Little did I know that one person would change the direction of the dream.
When traveling with Disney on Ice when I met my future husband Driss on the 16th street mall bus in Denver CO. I did not expect to marry Driss. After 4 years of dating each other we got married. When we decided to have kids. I wanted to stay home and raise the kids sn my husband supported this decision. Driss wanted to start a limo company so we started a limo service. This way I could work in the office and drive plus take care of the kids and household. My husband drives and maintains the vehicles. We have been running the business since 2004
Running a business has its quarks. Since I deal with all of the office work and most of the advertising I know how frustrating it is to work with web development companies and other people in order to build up presence on the internet. It is not easy to get things done properly or fixed once something has been designed.
Last year while working with a web development company we had a great site built. When we decided to leave the company after the year contract was up the company haded the website to us in pieces and told us to put it together. It was a mess. At this point I had already researched and started to learn coding online through Khan Academy and articles. I wanted to build a new site or fix the current site so that it works. The current site is a disaster.
When I was on FaceBook I saw the Coding BootCamp for University of Denver. Since I was frustrated with the way things were going and the bits and pieces of stuff I was learning online I wanted to take the course. Overwhelmed and intimidated by the thought of going to these classes I still wanted to try to learn coding. I really wanted to learn how to build beautiful, practical, working, and functional websites. Knowing it will not be easy I will do my best. I hope to be able to not only build a better website but to possibly work on building websites for others. I am exited to see the opportunities and doors that learning how to code will open.


Card content
Simple Card
Tel:
Company:
...
Card title
This is the description
OMI Card
Welcome to OMI


I am a versatile translation and localization professional and an experienced language teacher.
• English - Portuguese
• Portuguese - English
• French - Portuguese
• Eton Institute – Dubai (Portuguese Language Teacher)
• Independent Private and Group Teacher (English and Portuguese)
• Responsible for the overall management of the company
• Develop and implement strategies to ensure profitable growth of the company
• Manage the FMCG products import/export process and ensures compliance with existing laws and regulations
• Develop and implement adequate operational planning and financial control systems
• Planned and executed business development strategies to attract and acquire new clients
• Communicated complex information to clients to make them aware of their options and help them assess the relative merits of different investment plans
• Created, implemented, and continually reviewed asset management plans to ensure strategies designed to help clients pursue their long-term goals
• Identified and developed new opportunities for long term revenue growth & managed overhead costs and model mix to increase profitability
• Conducted competitor analysis and reviews of market trends to achieve market share metrics
• Initiated and developed relationships with key decision makers in target organizations for business development
• Identified prospective clients and generated new business opportunities
• Managed a team of 240+ people (including a team of 7 direct reports)
• Responsible for all business unit activities ranging from human resources, finance, commercial, business development, operational and customer relationship management
• Developed and executed the agreed business plan with full accountability for the business P&L
• Increased profitability (over 20%) with key customers while ensuring a consistently high level of service
• Increased existing account revenue from key client contracts including a triple revenue increase of the businesses most significant account
• Trained, developed and retained key employees through proper talent management and succession planning
• Set up operations for Road Paint (a start up company)
• Worked with government entities to increase awareness about EU regulations
• Responsible for all the commercial and marketing activities in the company
• Developed distribution strategies, established vendor networks, and negotiating contracts and managed product distribution and budgetary allocations
• Interpreted financial information and monitored cash flows
• Researched market trends and analysed financial regulations
• Developed financial management mechanisms that minimized risk and adopted effective cost control measures
• Managed the company's financial accounting and provided accurate financial reports
• Managed budgets, supervised finance staff and developed external relationships
Portuguese (Native)
English (Fluent)
French (Fluent)
Spanish (Proficient)


| Inscription C004 | Index | Area Plan | MI Plan C | < Prev. | Next > |
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South Leigh is first mentioned in 1190 as Stanton Lega. Stan-ton... Stone town (near
Devil's Quoits prehistoric stone circle), Leigh, - Lega... forest clearing (in Wychwood Forest). The oldest visible part of St James's Church is 12th Century and the renowned mediaeval wall paintings date from the 15th century. John Wesley preached his first sermon there in 1725. South Leigh remained a chapelry of Stanton Harcourt until 1868, when a separate parish was created. The first vicar, Gerard Moultrie, helped establish a National School (now the Village Hall, No 1) in 1871. It closed in 1946. He also built Glebe House (No 8) and St James's College, later Holyrood House (No 3). The Wesleyan Chapel was built in 1876 (No 10) At least two cottages (Nos 15 & 16) in the village retain smoke-blackened thatch, a rare survival indicating that they were originally constructed without a chimney, smoke escaping through the roof. Agricultural history is one of mixed farming with many families working on the land until the 1970s. For at least five hundred years, owners of South Leigh have been absentee landlords, so all the land has been managed by tenant farmers. Parliamentary Enclosure of the land was completed in 1792 and landholders from 1792 to 1875 were the Sibthorp Family, and from 1875 the Mason Family and Brasenose College. When farming was in recession in the 1860s - 70s twelve families, one third of the population, emigrated to New Zealand. The Sibthorp owners built several pairs of model family cottages (e.g. No 18) and invested in new farm buildings during the 1870s. The Railway Station opened in 1861 and closed to passengers in 1962 and to freight in 1965. Twenty-one men from the village lost their lives, whilst on active service, during the two World Wars. The poet Dylan Thomas lived at the Manor House (No 7), 1947-1949. The major addition to the village during the 20th century was Lymbrook Close in the 1950s, built on pasture land known as Bird's Hay. The population in Jan 2000 was 349, and most residents now commute to work in Witney, Eynsham, Oxford and London. |
| The Parish Church of St. James the Great, South Leigh, Oxfordshire. | Copyright © St. James the Great South Leigh Parochial Church Council, 2006 |
| Updated 22nd November 2005 | Feedback |


Pizza Builder.com
Diameter:
Add Pepperoni
Order A Pizza
Your pizza will cost
and you can cut it into
.


"BITHYNIA "a province in Asia Minor, to the south of the Euxine and Propontis. Christian congregations were here formed at an early time (1 Peter 1:1). Paul was prevented by the Spirit from entering this province(Acts 16:7). It is noted in church history as the province ruled over by Pliny as Roman proconsul, who was perplexed as to the course he should take with the numerous Christians brought before his tribunal on account of their profession of Christianity and their conduct, and wrote to Trajan, the emperor, for instructions (A.D. 107).
"BITHYNIA "a province in Asia Minor, to the south of the Euxine and Propontis. Christian congregations were here formed at an early time (1 Peter 1:1). Paul was prevented by the Spirit from entering this province(Acts 16:7). It is noted in church history as the province ruled over by Pliny as Roman proconsul, who was perplexed as to the course he should take with the numerous Christians brought before his tribunal on account of their profession of Christianity and their conduct, and wrote to Trajan, the emperor, for instructions (A.D. 107).


Product
Providers can view the data sources that patients have connected via the 1upHealth patient application (). Data is presented in an easy to understand patient timeline which supports demographics, medications, labs, conditions, and history.Supported 3rd party data sources include:- Other health system FHIR® servers- CCDA Uploads (converted to FHIR®)- Patient reported data (converted to FHIR®)- Wearable sensors & phone activity (converted to FHIR® and Open mHealth)Provider health systems can reduce the amount of time calling patient referral sources or previous clinics to track down data. Additionally, they can get alerts triggered from updates to the external systems in case of a likely readmission, ER visit, or relevant encounter
Quality
- FHIR®net API
- Synthea Patient Generator Build Status codecov
- Spark
- Asymmetrik FHIR® API Server
- ASCVD Risk Calculator
- FHIR®net API
- Synthea Patient Generator Build Status codecov
- Spark
- Asymmetrik FHIR® API Server
- ASCVD Risk Calculator
User Experience
Providers can view the data sources that patients have connected via the 1upHealth patient application (). Data is presented in an easy to understand patient timeline which supports demographics, medications, labs, conditions, and history.Supported 3rd party data sources include:- Other health system FHIR® servers- CCDA Uploads (converted to FHIR®)- Patient reported data (converted to FHIR®)- Wearable sensors & phone activity (converted to FHIR® and Open mHealth)Provider health systems can reduce the amount of time calling patient referral sources or previous clinics to track down data. Additionally, they can get alerts triggered from updates to the external systems in case of a likely readmission, ER visit, or relevant encounter
Expectations
- FHIR®net API
- Synthea Patient Generator Build Status codecov
- Spark
- Asymmetrik FHIR® API Server
- ASCVD Risk Calculator
- FHIR®net API
- Synthea Patient Generator Build Status codecov
- Spark
- Asymmetrik FHIR® API Server
- ASCVD Risk Calculator
Interoperablity
Providers can view the data sources that patients have connected via the 1upHealth patient application (). Data is presented in an easy to understand patient timeline which supports demographics, medications, labs, conditions, and history.Supported 3rd party data sources include:- Other health system FHIR® servers- CCDA Uploads (converted to FHIR®)- Patient reported data (converted to FHIR®)- Wearable sensors & phone activity (converted to FHIR® and Open mHealth)Provider health systems can reduce the amount of time calling patient referral sources or previous clinics to track down data. Additionally, they can get alerts triggered from updates to the external systems in case of a likely readmission, ER visit, or relevant encounter
Security
Providers can view the data sources that patients have connected via the 1upHealth patient application (). Data is presented in an easy to understand patient timeline which supports demographics, medications, labs, conditions, and history.Supported 3rd party data sources include:- Other health system FHIR® servers- CCDA Uploads (converted to FHIR®)- Patient reported data (converted to FHIR®)- Wearable sensors & phone activity (converted to FHIR® and Open mHealth)Provider health systems can reduce the amount of time calling patient referral sources or previous clinics to track down data. Additionally, they can get alerts triggered from updates to the external systems in case of a likely readmission, ER visit, or relevant encounter
Information Assurance
- FHIR®net API
- Synthea Patient Generator Build Status codecov
- Spark
- Asymmetrik FHIR® API Server
- ASCVD Risk Calculator
- FHIR®net API
- Synthea Patient Generator Build Status codecov
- Spark
- Asymmetrik FHIR® API Server
- ASCVD Risk Calculator
Ethics and Compliance
Providers can view the data sources that patients have connected via the 1upHealth patient application (). Data is presented in an easy to understand patient timeline which supports demographics, medications, labs, conditions, and history.Supported 3rd party data sources include:- Other health system FHIR® servers- CCDA Uploads (converted to FHIR®)- Patient reported data (converted to FHIR®)- Wearable sensors & phone activity (converted to FHIR® and Open mHealth)Provider health systems can reduce the amount of time calling patient referral sources or previous clinics to track down data. Additionally, they can get alerts triggered from updates to the external systems in case of a likely readmission, ER visit, or relevant encounter


--- layout: post title: Quick read and write lists to file date: 2012-05-27 11:14:46.000000000 +01:00 type: post parent_id: '0' published: true password: '' status: publish categories: - python tags: [] meta: _edit_last: '1' author: Noel permalink: "/quick-read-and-write-lists-to-file/" ---
Reading from a file:
with open('input.txt') as f: lines = f.read().splitlines()
Writing back out:
with open('output.txt', 'w') as f: for el in elems: f.write(el + '\n')


Created by Kalman Speier
What we planned?
(static, node.js)
Our expectations was high, so where we ended up?
“Well we were able to achieve our goals in a very short time period with a small DevOps team and there were just a few hitches.”
This how a manager would say so.
I would rather say that we were able to build what we planned (more or less), thanks for god and Ansible! ;)
Outline
Built on top of battle tested components
RabbitMQ: highly reliable messaging system
Celery: distributed task queue
Redis: in-memory, key-value data store
Overview
Explanation
What we are considering for the future?
(Hubot to rule them all)


Vice President highlights limp action to prevent illegal trade
by Phyo Wai
Despite the inability to prevent and control illegal trade effectively, illegal goods worth over Ks15 billion were confiscated over the past 14 months, Vice President Myint Swe told local businesspeople.
The Private Sector Development Committee held the 31st meeting with Myanmar entrepreneurs at the office of the Union of Myanmar Federation of Chambers of Commerce and Industry in Yangon on December 8.
"Following complaints from local businesses about their losses caused by illegal trade inflow, we formed anti-illegal trade task forces in nine regions and states related to borders. But we cannot perform effectively. We are also divided into other jobs such control of armed groups and peace efforts. Only when they can all be taken care of, can we control such illegal trade. However, we have directed those regions (with reported high amounts of illegal trade) to take more effective action," the Vice President.
The seized Ks15 billion illegal goods was just a mere fraction of it all, he added.
"Within 14 months from September 2018 to October this year, illegal goods worth over Ks15 billion were confiscated from 1,065 cases," he said.
the Vice President also quoted the index published by The Economist Intelligence Unit that Myanmar ranks 82 out of 84 countries in global illegal trade index.
The country has formed the Illegal Trade Eradication Steering Committee to take tougher action against illicit trade, he added.
"When it comes to illegal trade, it is not heartening that we cannot take more effective action. Leaders had always make remarks about this. In some regions, there is not a single seizure of illegal goods in a month which is an impossibility. Security issues might be concerned with this," he commented.
Related Articles


bylaws, writing bylaws, nonprofit application
Your orchestra needs bylaws. Bylaws define your organization's structure and will be needed for your 501(c)(3) nonprofit application and possibly for starting a bank account.
Bylaws contain information defining your mission, purpose, objectives, activities (broadly speaking), membership, the structure of your board and officers, conflict of interest and non-discrimination policies, and legal jargon necessary for nonprofit organizations. Bylaws define the structure of your organization, not detailed policies or things that might change often. After you initially adopt them, you should not have to change your bylaws unless the fundamental structure or purpose or activities of your organization change. Creating your bylaws is a chance to thoroughly think through what you want your organization to be.
Your board and/or your membership should vote to officially adopt your bylaws, and you should review them periodically after that. The bylaws should spell out the method for updating the bylaws in the future.
When creating bylaws for the RCO, I wrote them up myself after looking at several examples and then reviewed them with my board members section-by-section during a meeting. When the final draft was ready, I sent them out to the orchestra membership for review, and several people did actually take the time to read them and provide feedback. This method worked fine for us.
You are welcome to use the RCO's original bylaws as an example and to copy and paste as much of the text as you like for your own organization. You might also be interested in viewing the Dexter Community Orchestra's bylaws (a group I used to play in and run, though I did not write their bylaws). I recommend looking at several sample bylaws before finishing yours.
When creating the RCO bylaws, I added some specific things designed to avoid certain future problems I anticipated. I will describe some of the decisions I made here.
I chose to explicitly define the duties of every board member in the bylaws, rather than leaving the number flexible and the duties vague. I didn't want the orchestra to be weighted down by people who serve on the board in name only and don't actually contribute anything meaningful. For the same reason, I included a clause stating that board members could be removed from office by a vote of the other board members for failure to adequately perform their duties or for engaging in activities harmful to the organization. I did not want us to get stuck with an officer who didn't wasn't pulling his weight with no way to get rid of him until the next election. It is possible that we might end up amending the number and duties of the officers described in this section more frequently than I would like as our activities change and the duties of the officers solidify (since we're still figuring out all the work that has to be done), but changing duties and activities seem like things that should warrant a bylaw review anyway. You can read a fuller discussion about my decisions for structuring the board elsewhere.
I put a clause in our bylaws that specifically forbids the orchestra from compensating musician members for playing in the orchestra. If, at some point in the future, the orchestra's leadership wants to pay members for their services, this would be a fundamental change to the mission and purpose of the organization, so the bylaws would have to be amended, and amendment is done by a vote of the musician members themselves. This prevents an overly-ambitious future leader or music director from deciding to convert the organization to a "professional" orchestra against the desires of the orchestra's members. I have known of a few other groups that started as community groups and later converted to professional or semi-professional groups. While the quality of music they produced went up, they became inaccessible to many musicians who wished to play in them and ceased to be "community" orchestras. If this type of progression is your goal, that's fine, but if it isn't, I recommend adding some blockages in your bylaws.
Some things I purposefully left as decisions for the board. My board decided that we would not charge membership dues, but we didn't think a future decision to charge dues should warrant a change to the bylaws. Consequently, the bylaws state that membership dues will be determined by the board. Similarly, the bylaws state that the music director and any guest artists can be either volunteers or paid (and neither category can be a voting member of the organization).


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| device_id | String | none | |
| wait_movement | Parameter that sets waiting time for axis to finish movement. | short | 3 |
| basis_unit | class MoveType(Enum): angle = `angle` mm = `mm` microstep = `microstep` step = `step` |
String | microstep |
| limits | limits of axis in basic units | float[] | none |
| preset_values | float[] | none |
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| State | DEV_VOID | DEV_STATE | OPERATOR | This command gets the device state (stored in its device_state data member) and returns it to the caller. |
| Status | DEV_VOID | CONST_DEV_STRING | OPERATOR | This command gets the device status (stored in its device_status data member) and returns it to the caller. |
| On | DEV_VOID | DEV_BOOLEAN | OPERATOR | Turn-on hardware controller of STANDA |
| Move_abs | DEV_FLOAT | DEV_FLOAT | OPERATOR | Move |
| Stop | DEV_VOID | DEV_BOOLEAN | OPERATOR | None. |
| Move_rel | DEV_FLOAT | DEV_FLOAT | OPERATOR | Moves axis relatively to its position, and return position. |
| Off | DEV_VOID | DEV_BOOLEAN | OPERATOR | None. |
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| Input Argument | Tango::DEV_VOID | none |
| Output Argument | Tango::DEV_STATE | Device state |
| DisplayLevel | OPERATOR | .. |
| Inherited | true | .. |
| Abstract | true | .. |
| Polling Period | Not polled | .. |
| Command allowed for | All states | .. |
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| Input Argument | Tango::DEV_VOID | none |
| Output Argument | Tango::CONST_DEV_STRING | Device status |
| DisplayLevel | OPERATOR | .. |
| Inherited | true | .. |
| Abstract | true | .. |
| Polling Period | Not polled | .. |
| Command allowed for | All states | .. |
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| Output Argument | Tango::DEV_BOOLEAN | |
| DisplayLevel | OPERATOR | .. |
| Inherited | false | .. |
| Abstract | false | .. |
| Polling Period | Not polled | .. |
| Command NOT allowed for | |
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| Input Argument | Tango::DEV_FLOAT | The URL of axis. |
| Output Argument | Tango::DEV_FLOAT | Returns position of axis, when movement is finished |
| DisplayLevel | OPERATOR | .. |
| Inherited | false | .. |
| Abstract | false | .. |
| Polling Period | Not polled | .. |
| Command NOT allowed for | |
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| Input Argument | Tango::DEV_VOID | |
| Output Argument | Tango::DEV_BOOLEAN | |
| DisplayLevel | OPERATOR | .. |
| Inherited | false | .. |
| Abstract | false | .. |
| Polling Period | Not polled | .. |
| Command NOT allowed for | |
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| Input Argument | Tango::DEV_FLOAT | Position to go relatively to current position |
| Output Argument | Tango::DEV_FLOAT | Position |
| DisplayLevel | OPERATOR | .. |
| Inherited | false | .. |
| Abstract | false | .. |
| Polling Period | Not polled | .. |
| Command NOT allowed for | |
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| Output Argument | Tango::DEV_BOOLEAN | |
| DisplayLevel | OPERATOR | .. |
| Inherited | false | .. |
| Abstract | false | .. |
| Polling Period | Not polled | .. |
| Command NOT allowed for | |
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| device_id_internal | false | false | Scalar | READ | Tango::DEV_USHORT | EXPERT | The STANDA dll enumerates the devices, so it is important to know the device`s number, that dll has given to it. |
| uri | false | false | Scalar | READ | Tango::DEV_STRING | OPERATOR |
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@(exception: String, user: models.users.User) @main("Search Results", user) {
If the problem persists, you can Contact Us
@exception


Cross DC - targets
- Working deployments with many Keycloak servers in various sites / datacenters
- Data consistency - updates to users,realms,sessions done in site1 visible on site2
- Performance - Ensure consistency with the minimal amount of messages across sites
Keycloak data
- Database (RDBMS) - Persistent metadata about realms, clients, roles, users, offline sessions
- Infinispan library - used as cache implementation
- Data caches - Used to avoid many unecessary RDBMS calls
- Need to be invalidated when particular object updated in DB
- Session caches - Used to handle sessions data
- Not persistent across server restarts
Singlenode deployment
- Single database (RDBMS) required
- Data caches - local infinispan caches
- Session caches - local infinispan caches
Cluster deployment
- Single database (RDBMS) required
- All cluster nodes connected to that DB
- Data caches - local infinispan caches
- Special "invalidation" messages sent across cluster nodes
- Session caches - distributed/replicated infinispan caches
Cross-DC deployment
- Replicated database (RDBMS) required
- MariaDB Galera or Oracle RAC
- Infinispan/JDG server
- Special server process provided by Infinispan
- Used to backup sessions data to different DCs
- Used to send invalidation messages to different DCs
Communication details
- 5 infinispan clusters with 2 datacenters setup
- Keycloak nodes cluster in site1
- JDG nodes cluster in site1
- Cluster between JDG nodes on site1 and on site2 (JGroups RELAY2 protocol and backup caches)
- JDG nodes cluster in site2
- Keycloak nodes cluster in site2
- Keycloak sends message to JDG server on same site
- JDG server sends it to JDG server in the other site through RELAY2
- JDG server on second site propagates it to Keycloak servers on second site through HotRod protocol (Client listeners)
- Keycloak servers listen to events through client listeners and do appropriate actions (Invalidate cache, update session caches)
Authentication sessions
- Valid during authentication of user
- Data not replicated across sites
- Relies on browser sticky session to ensure loadbalancer forwards to same Keycloak node (on same DC)
Authentication sessions stickyness
User sessions
- Created after successful user authentication
- Data replicated across sites
- Can't rely on browser sticky session due both user and client applications require them
Modes
- Active/active
- Active/passive
Active/active
- Users and client application send requests to both datacenters
- After write on first DC, data need to be immediately visible for reading on second DC
- Default settings
- Worse performance
Active/passive
- Users and client application send requests to one datacenter
- Second DC used just as a backup in case of failure of first DC
- Better performance
Basic setup
- Documentation: http://www.keycloak.org/docs/latest/server_installation/index.html#setup
- Recommended to try this to understand cross-dc better
Cross-DC deployment administration
Recommended startup order
- Replicated databases in both datacenters
- JDG servers in both datacenters
- Keycloak servers in both datacenters
Requirements
- Keycloak requires database in its DC to be running
- Keycloak requires (at least one) JDG server in its DC to be running
- Keycloak doesn't strictly need JDG server on the other DC to be running, but it's recommended
- If JDG server on other DC is not running, it means that second datacenter is "offline" from first datacenter PoV
Migration of Keycloak to newer version
- Complicated due the requirements above
- No rolling upgrade (zero-downtime upgrade) support
Split-brains
- Datacenters are in different WAN
- Bigger chance of network outages and broken connections among sites
- JDG/Keycloak has good support for:
- Automatically detect outages
- Manually planned outages (Expected downtimes) - take site offline
- Recover from outages
Future
- Zero downtime support (Rolling upgrade)
- Easier deployment
- No requirement of replicated RDBMS
- Just replicated JDG will be required
- Should be easier in cloud deployments (Openshift etc)


Money Play. Should Red redouble? If redoubled, should White take?
pips Red=94 White=152
(CorrectAnswer= 0/0, ErrorScore= 0)
In the Battersea chouette the box, Red, had a partner. The box wanted to redouble and the partner was vehemently against doubling.
After a heated debate the partner prevailed and they didn't double. Just as well, as it would have been a quadruple blunder! Red wins only a fraction over 50% of the time from here but of course his gammons give him positive equity.
Red's timing is far too precarious for him to redouble here. I was on the team and sadly Red did win a gammon – c'est la vie.
After a heated debate the partner prevailed and they didn't double. Just as well, as it would have been a quadruple blunder! Red wins only a fraction over 50% of the time from here but of course his gammons give him positive equity.
Red's timing is far too precarious for him to redouble here. I was on the team and sadly Red did win a gammon – c'est la vie.
1. Cubeful 2-ply 13/9(2) Eq.: +0.895 0.724 0.101 0.003 - 0.276 0.059 0.001 2. Cubeful 2-ply 13/5 Eq.: +0.645 (-0.250) 0.666 0.075 0.002 - 0.334 0.061 0.001 3. Cubeful 0-ply 13/11(3) 7/5 Eq.: +0.549 (-0.346) 0.661 0.077 0.002 - 0.339 0.058 0.001 4. Cubeful 0-ply 8/4(2) Eq.: +0.513 (-0.382) 0.650 0.076 0.002 - 0.350 0.061 0.001 5. Cubeful 0-ply 13/11 7/5 6/2 Eq.: +0.507 (-0.388) 0.653 0.075 0.001 - 0.347 0.075 0.001