5. Tools¶
-
tools.request.
find
(config_name, starting_with='', wl_min=0, wl_max=inf, unit='nm', f_min=0.0, plot_wavelength=True)[source]¶ Look for the SMILES with the given parameters
Parameters: - config_name (str) – name of the configuration to use
- starting_with (str) – the begging of the SMILES
- wl_min (float) – wavelength minimum for the search
- wl_max (float) – wavelength maximum for the search
- unit (str) – unit of the wavelength ( “nm” , “ev” or “cm-1” )
- f_min (float) – oscillator strength minimum for the search
- plot_wavelength (bool) – if you want to get a plot of the wavelength or not
Returns: None
-
tools.request.
select
(data, starting_with='', wl_min=0, wl_max=inf, unit='nm', f_min=0.0)[source]¶ Select SMILES in data with oscillator strength peaks between bounds
Parameters: - data (dict(SMILES)) – dict to analyse
- starting_with (str) – beginning of the SMILES (you have to add an extra ‘ before the SMILES)
- wl_min (float) – wavelength minimum for the search
- wl_max (float) – wavelength maximum for the search
- unit (str) – unit of the wavelength ( “nm” , “ev” or “cm-1” )
- f_min (float) – oscillator strength minimum for the search
Returns: list of selected smiles
-
tools.request.
smiles_to_image
(i, smiles)[source]¶ Convert a SMILES into image, the image name is “id” + “_2D.png”
Parameters: - i (int) – id of the SMILES given in parameter
- smiles (str) – String corresponding to the SMILES to convert to image
Returns:
-
tools.plot_wavelength.
plot_wl
(data, smiles)[source]¶ Generate a plot of the SMILES with the wavelength and oscillator strength peaks
Parameters: - data (dict) – data dict
- smiles (str) – the SMILES to plot
Returns: None
-
tools.plot_wavelength.
wavelength_to_rgb
(wavelength, gamma=0.8)[source]¶ taken from http://www.noah.org/wiki/Wavelength_to_RGB_in_Python This converts a given wavelength of light to an approximate RGB color value. The wavelength must be given in nanometers in the range from 380 nm through 750 nm (789 THz through 400 THz).
Based on code by Dan Bruton http://www.physics.sfasu.edu/astro/color/spectra.html Additionally alpha value set to 0.5 outside range
Parameters: - wavelength – wavelength
- gamma – gamma
Returns: color (r, g, b, a)
-
tools.rnn_proba.
proba_different_position
(model, smiles_to_test, index, atom, verbose=False)[source]¶ Print the probability of apparition of a SMILES with different position of an atom
Exemple: >>> proba_different_position(models[0], >>> ['c', '1', 'c', 'c', 'c', 'c', '1', '\n'], >>> [0, 2, 3, 4, 5], 's', False) s1cccc1 : 0.00000000045901715348268789499561297600283699127388103 c1sccc1 : 0.00000000064832566091357019325257395698722251431433960 c1cscc1 : 0.00000001438888019436213103261810813092436145410601966 c1ccsc1 : 0.00000065275450335318335220226868345627657674867805326 c1cccs1 : 0.00000011832597629642405283315926981316246191511254437
Parameters: - model (Keras Model) – model to use
- smiles_to_test (list of str) – list of SMILES to test
- index (list of int) – index where the atom heve to be placed
- atom (str) – atom to place
- verbose (bool) – True : print all information of each turn, False : print only the probability
Returns: None
-
tools.rnn_proba.
proba_different_smiles
(model, smiles_to_test, verbose=False)[source]¶ Print the probability of apparition of the SMILES with the model given in parameter
Parameters: - model (Keras Model) – model to use
- smiles_to_test (List[List[[str]]]) – list of SMILES to test
- verbose (bool) – True : print all information of each turn, False : print only the probability
Returns: None


Poor Ghana Collect 2nd Win In Bafana Group
by David KappelGhana have made it two wins from two in Bafana Bafana's qualification group for the 2021 Africa Cup of Nations, despite an underwhelming performance in Sao Tome and Principe today.
Read: Ofori Leads List Of 6 Potential Chiefs Targets?
The Black Stars defeated the hosts on the artificial pitch at the Estadio Nacional 12 de Julho 1-0 courtesy of a second-half penalty by Jordan Ayew.
The early stages of the game were dominated by the visitors, although they struggled to create clear-cut opportunities despite making just one change to the team that secured a 2-0 victory over South Africa last Thursday.
One of the few chances fell to Andre Ayew, but his header sailed over the bar in the 20th minute.
Sao Tome had a decent chance just before half-time following some miscommunication between a Ghana defender and goalkeeper Richard Ofori, but the shot-stopper managed to keep things level.
The teams headed into the break with the score tied at 0-0, with Ghana ending the first half with 78% possession without finding the back of the net.
Midfielder Thomas Partey had a great chance just after half-time, but placed his header just over the bar.
Jordan Ayew eventually opened the scoreline, converting a spot-kick in the 50th minute after Sao Tome's goalkeeper brought down Emmanuel Boateng inside the box.
The hosts came close to scoring in the 70th minute, but the bicycle-kick effort sailed just wide.
The score remained 1-0 at the final whistle, which saw Ghana go three points clear at the top of Group C after collecting their second victory in a row.


Disease Identification Modeling Based on Machine Learning
SJTU
Devised a composite disease identifying algorithm for condition specific genes by incorporating feature selection, dimensionality reduction and classification (adopting PCA, SVM, etc.).
Evaluated with acute myeloid leukemia genomic samples and achieved results with high accuracy (95.5%).
Large-Scale Patent Classification
SJTU
Trained a supervised-learning classification model on 110,000 samples with a feature of 5,000 dimensions using LIBLINEAR. And the training and predicting process are parallelized with OpenMP to speed up.
Implemented a Min-Max Modular and gained a high accuracy (92.9%).
Android Based Car Controlling
SJTU
Developed a small car based on SCM MSP430 with a smartphone on it to transmit back real-time video in the front of the car.
Built an app on Android to control the car with voice, gestures or buttons.
Advanced MIPS CPU Simulator with Multi-Cycle/Pipeline
SJTU
Devised the simulator of each CPU component (including Memory, ALU, etc.) in C++ and connected them into advanced MIPS CPU simulators with multi-cycle and pipeline.
Implemented the multi-cycle CPU Simulator on a Xilinx Experiment Board in Verilog HDL.


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{% extends "sidebar-page.html" %} {% block content %}
All the links previously shown on this page can now be found in the DOAJ Best Practice Guide. The DOAJ Best Practice Guide is a web resource that provides selection criteria, resources and tools for the identification of reputable open access journals to support researchers, publishers and librarians in their search of best practice and transparency standards. It is also an attempt to collect discussions about open access to publications and its development. It is developed by, and updated regularly by, the DOAJ team based on existing and new information. The Guide complements the work of the DOAJ Ambassadors as well as academics, librarians and publishers worldwide. Based on the information provided on the For Publishers page and the Principles of Transparency and Best Practice in Scholarly Publishing, the Guide aims to do the following:


How to parse documents
Upload the file here and look at the result.
Build and Run
DeDoc service start commands:
docker build . -t dedoc_container
docker run -p 1231:1231 --rm dedoc_container:latest python3 /dedoc/main.py
-> Service should rise at port 1231
Service parameters are configured in the config file (dedoc_project/dedoc/config.py)
The config is a python file, so you can use everything that standard python can do, for example, calculate the maximum file size as 512 * 1024 * 1024
How to use
You can send the file using the POST request to the address host:1231/upload
The name of the downloaded file should appear on the form
Additional query options:
- language: string - document recognition language. The default value is "rus+eng". Available values: "rus+eng", "rus", "eng".
- with_attachments: boolean - option including analysis of attached files. The option is False by default. Available values: True, False.
- insert_table: boolean - this option enables embedding the table in the document tree. The option is False by default. Available values: True, False.
- return_format: str - an option to return the response in html, json or tree form.
The default value is json. Use the tree and html format for debug only.
Warning: html-format is used only for viewing the recognition result (in a readable form). For further analysis, we recommend using the output json format. - structure_type: string - type output structure ('linear' or 'tree')


Barneys' Madison Avenue store to remain open for at least a year
Barneys New York Inc's flagship Madison Avenue outlet in Manhattan will remain open for at least another year in a slimmed-down form while the buyer of the luxury retailer's brands negotiates with the store's landlord.
REUTERS: Barneys New York Inc's flagship Madison Avenue outlet in Manhattan will remain open for at least another year in a slimmed-down form while the buyer of the luxury retailer's brands negotiates with the store's landlord.
A bankruptcy judge approved the sale of Barneys brands and other intellectual property to Authentic Brands, a firm that acquires and licenses brands, on Thursday. The deal closed on Friday, Authentic Brands said.
The store's well-known eatery, Fred's, will also remain open.
"We have come to terms with Authentic Brands Group, Barneys new owner, to keep the Madison Avenue store open in a smaller footprint for the next 12 months while we continue to explore longer term solutions," Daniel Levy, president of real estate investment firm Ashkenazy Acquisition Corp, the store's landlord, said in a statement on Friday.
Levy said the New York store generates about US$20 million in annual profitability for Barneys, even with a recent raise in rent.
A cultural touchstone for generations of New Yorkers and followers of fashion, Barneys filed for bankruptcy protection in August, citing rent hikes as a factor.
Authentic Brands, which bid roughly US$271 million for Barneys, said it will turn the Madison Avenue location into a pop-up store.
The firm plans to license the Barneys brand to Hudson's Bay Co owned Saks Fifth Avenue and will open shops in Saks locations across the United States and Canada.
That will start with an attempted Barneys reboot on the fifth floor of the Saks Fifth Avenue location in Manhattan. Remaining Barneys stores are expected to close.
"Over the past several months, we have worked diligently with the court, our lenders and creditors to maximize the value of the Barneys assets and we're pleased to have reached the conclusion of this process," Barneys said in a statement.
(Reporting by Uday Sampath in Bengaluru; Editing by Sriraj Kalluvila)


Able Player Audio Demo #7: Multiple audio players (each with its own playlist)
The first player has an embedded playlist; the second player has an external playlist.
Both can be customized with CSS, but the external player is more flexible in terms of positioning.


PATCHEM PROJECT
HOME
ABOUT
CONTACT
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ORGANIZATIONS
"We hope for better things, it will arise from the ashes"
Thank You


My mapper map is an app that has the ability to map out any area, city, and will show business addresses. Specifically when the app loads; there is a search bar in which you would place a zip code or keyword you would want to look up. Then a tableview is generated with matching options. Click on the tableview cell of the correct option and the map shows you exactly where it is.
My Notes app is like the basic note app. The user has the ability to add new notes with date displayed, edit existing notes, save and delete notes. This note app also has the ability to save pictures.
My PeoplemonGo App had the ability to track the location of a particular group of people. When students were signed in and had a profile picture; the blue flashing indicator pin (that shows location) was the user’s actual profile picture. I had the ability to also catch users and list them in a tableview!
My ToDo List app was similar to the Notes app; however with the todo list app, you could do the following:
1. Add, delete, edit, and save tasks
2. Place the tasks in categories (home, work, and other)
3. Mark a task complete-set a reminder and choose a due date
4. Add a picture to a todo task
5. Hide completed tasks
This is the basic Tic Tac Toe Game. This App will tell the user if it is X's or O's turn
The app will also keep score and allow the user to change the color of the X's and O's
The Secret Santa App was my first Mac OS app. This app was my first team collaboration app.
Our team wanted an App that users could use anonymously to post a need.
In the app the user has the ability to add a need, edit, save, and delete a need.
This app lists the needs in a tableview for other users to see, read, and commit to meet.
Also, this app allows users to donate money. All information is stored on Parse because Firebase was not compatible with MacOS
The TEKY Sports App was a team collaboration app.
Our team wanted an App that users could use to track eSports tournaments
In the app the user has the ability to search for specific games
This app allows the user to see the flag of the country of the match and see start and end dates
There is a splash screen to the app, an about screen, and a feedback form that emails team members directly
The user can obtain news and videos and tell if a video is available prior to clicking


You are required to answer the following 10 questions by selecting one correct answer.
The total score is 100 marks.
1. The external JavaScript file must contain the script tag.(10 marks)
2. How do you create a function in JavaScript?(10 marks)
3. What is the other name for Javascript?(10 marks)
4. How do you call a function named "myFunction"?(10 marks)
5. How do you write an IF statement in JavaScript?(10 marks)
6. How do you write an IF statement for executing some code if "i" is NOT equal to 5?(10 marks)
7. A JavaScript file has an extension of;(10 marks)
8. How do we start Javascript?(10 marks)
9. Javascript is case sensitive.(10 marks)
10. When we use function and onClick event, we must use the script tag and function in the head tag only.(10 marks)


| Red Scores | Blue Scores | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Match | Result | Red Teams | Blue Teams | Tot | Auto | AutoB | Tele | EndG | Pen | Tot | Auto | AutoB | Tele | EndG | Pen |
| F-1 | 539-514 R | 6433 724 2844 | 6022 4290 4174 | 539 | 20 | 0 | 317 | 202 | 0 | 514 | 50 | 0 | 258 | 146 | 60 |
| F-2 | 366-779 B | 6433 724 2844 | 6022 4290 4174 | 366 | 140 | 0 | 156 | 50 | 20 | 779 | 140 | 0 | 367 | 242 | 30 |
| F-3 | 711-638 R | 6433 724 2844 | 6022 4290 4174 | 711 | 80 | 0 | 319 | 282 | 30 | 638 | 110 | 0 | 236 | 212 | 80 |
Note: * Indicates a surrogate match. Those matches do NOT count in the rankings
Winner is Franklin Alliance 1: 6433, 724, 2844 |
| All. | Pos. | Team # | Team Name | School | City | State | Country |
|---|---|---|---|---|---|---|---|
| 1 | Captain | 6433 | Neutrinos | Neighborhood Group | Lakeland | FL | USA |
| Partner 2 | 724 | RedNek Robotics Wun | Neighborhood Group | Sun River | MT | USA | |
| Partner 3 | 2844 | Valley X Robotics | Industrial Metal Supply/Motorola Solutions/Grand Canyon Security Systems/Alcoa /Inside Out Auto Solutions/PTC & VALLEY CHRISTIAN HIGH SCHOOL | Chandler | AZ | USA |
Runner-up is Edison Alliance 2: 6022, 4290, 4174 |
| All. | Pos. | Team # | Team Name | School | City | State | Country |
|---|---|---|---|---|---|---|---|
| 2 | Captain | 6022 | TBD - To Be Determined | AURORA HIGH SCHOOL | Aurora | OH | USA |
| Partner 2 | 4290 | High PHidelity | LASA Robotics / FIRST® in Texas / Texas Workforce Commission & LASA HIGH SCHOOL | Austin | TX | USA | |
| Partner 3 | 4174 | Atomic Theory | DALTON SCHOOL | New York | NY | USA | |


App\Command\AddUserCommand
A console command that creates users and stores them in the database.
To use this command, open a terminal window, enter into your project
directory and execute the following:
$ php bin/console app:add-user
To output detailed information, increase the command verbosity:
$ php bin/console app:add-user -vv
See https://symfony.com/doc/current/cookbook/console/console_command.html
For more advanced uses, commands can be defined as services too. See
https://symfony.com/doc/current/console/commands_as_services.html
- Author: Javier Eguiluz<EMAIL_ADDRESS>Synopsis
class AddUserCommand
extends Command
{
- // members
- protected static string $defaultName = 'app:add-user';
- private SymfonyStyle $io;
- private $entityManager;
- private $passwordEncoder;
- private $validator;
- private $users;
- // methods
- public void __construct()
- protected void configure()
- protected void initialize()
- protected void interact()
- protected void execute()
- private void validateUserData()
- private string getCommandHelp()
Hierarchy
Extends
- Symfony\Component\Console\Command\Command
Violations
PHPMessDetector
| Line | Rule | Message |
|---|---|---|
| 113 | UnusedFormalParameter | Avoid unused parameters such as '$output'. |
Checkstyle
| Line | Column | Severity | Message |
|---|---|---|---|
| 63 | 143 | warning | Line exceeds 120 characters; contains 143 characters |
| 115 | 185 | warning | Line exceeds 120 characters; contains 185 characters |
| 143 | 124 | warning | Line exceeds 120 characters; contains 124 characters |
| 198 | 159 | warning | Line exceeds 120 characters; contains 159 characters |
| 202 | 193 | warning | Line exceeds 120 characters; contains 193 characters |
| 212 | 121 | warning | Line exceeds 120 characters; contains 121 characters |
Members
private
- $entityManager
- $io — Symfony\Component\Console\Style\SymfonyStyle
- $passwordEncoder
- $users
- $validator
protected
- $defaultName
Methods
private
- getCommandHelp() — The command help is usually included in the configure() method, but when it's too long, it's better to define a separate method to maintain the code readability.
- validateUserData()
protected
- configure() — {@inheritdoc}
- execute() — This method is executed after interact() and initialize(). It usually contains the logic to execute to complete this command task.
- initialize() — This optional method is the first one executed for a command after configure() and is useful to initialize properties based on the input arguments and options.
- interact() — This method is executed after initialize() and before execute(). Its purpose is to check if some of the options/arguments are missing and interactively ask the user for those values.
History
-
2019-01-14T18:46:33+00:00 (commit #e020244)
Author: Jose Antonio Martinez Iglesias (jositoyoyo@jose-antonio-martinez) / Commiter: Jose Antonio Martinez Iglesias (jositoyoyo@jose-antonio-martinez)
Primer commit


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BSc Agriculture is a 4-year undergraduate course that primarily focuses on research and practices in agricultural science, dealing with disciplines like Genetics and Plant Breeding, Agricultural Microbiology, Soil Science, Plant Pathology, etc. It is a professional degree recognized by the Government of India in the field of agricultural science. This course aims to provide training to implement modern agricultural techniques and technologies in the real world scenario.
Students who wish to study this course should have completed Class 12 with Physics, Chemistry, and Biology as their main subjects. The admission is either done on the basis of Merit and Direct Interview or through BSc Agriculture Entrance Exams.
Top Ranked BSc Agriculture Colleges in India
College Name -Location- Fees (INR) Govind Ballabh Pant University of Agriculture and Technology -Pantnagar -41,736 Junagadh Agricultural University -Junagadh- 29,190 Chandigarh University -Chandigarh- 1,44,000 Shivaji University -Kolhapur- 7,500 Orissa University of Agriculture and Technology -Bhubaneswar- 53,064 University of Agricultural Sciences- Dharwad -18,900 Annamalai University -Chidambaram- 1,02,270 Kalasalingam Academy of Research And Education - Krishnankovil -1,40,600 Siksha O Anusandhan University -Bhubaneswar -1,65,000 Bharath University- Chennai -1,25,000Students after completing BSc Agriculture have good scope in their careers. There are many kinds of BSc Agriculture Jobs available like Agricultural Officer, Agricultural Analyst, Plant Breeder, Seed Technologist etc where students can earn around INR 3,00,000 to INR 6,00,000 which with experience can rise to INR 10,50,000 to INR 13,00,000 per year. Students also have the option of going towards an MBA Course like MBA in Agri-business Course. With interest in agriculture on the rise from private multinational companies, it is prudent to complete MBA for MBA Job Opportunities in Agriculture. There are many agricultural universities in India that offer the BSc Agriculture program, approved by the Indian Council of Agricultural Research (ICAR), which regulates the teachings and implementation of agricultural research in India. Check Out: BSc Agriculture Distance Education
Key Highlights of BSc Agriculture
BSc Agriculture Full-Form :Bachelor of Science in Agriculture, Course Duration: 4-Years, Admission Process :Entrance Exam Based, Eligibility :50% marks in class 12 in Science (Physics, Chemistry, Biology) stream from a recognized educational board, Average Course Fee: INR 2-3 Lakhs, Average Salary Offered :INR 3-6 Lakhs per annum, Job Profiles: Agriculture Officer, Assistant Plantation Manager, Agricultural Research Scientist, Agriculture Development Officers, Agriculture Technician, Agriculturists, Business Development Executive, Marketing Executive, etc. ,Top Recruiters: DuPont India, Rallis India Limited, Advanta Limited, National Agro Industries, Rasi Seeds, ABT Industries, and others such. BSc Agriculture Eligibility Interested students are required to fulfill the below-mentioned eligibility criteria of BSc Agriculture course: Completion of Intermediate (12 years of school education) in the Science stream with 50% of marks. Physics, Chemistry, Biology and/or Mathematics as the subjects of study. Apart from this, candidates possessing Intermediate in Agriculture stream (limited states) are also eligible to apply for the course. A few of the colleges also conduct their own university and college-level entrance examination for offering admissions to this course.BSc Agriculture Admission Process
The admission procedure varies from institute to institute. Some colleges provide direct BSc Agriculture admission on the basis of merit and personal interview, and some colleges conduct national, state-level, or university level entrance examinations to admit the interested students. ..For Direct Admission: Students must fill the college application form whether online or offline before the application deadline in order to be considered for the admission process. For Entrance Exam based Admission: Students must fill the registration form of one of the many BSc Agriculture Entrance Examinations such as KCET 2020, KEAM 2020 that offers admission into colleges of Karnataka and Kerala respectively. Admission is offered on the basis of performance in these examinations, followed by the different rounds of counseling sessions which usually consist of Group Discussion and Personal Interview.BSc Agriculture Entance Exams
Exam Name -Overview BHU UET 2020 -BHU UET is a common university level examination that offers admission into many UG courses in the reputed Banaras Hindu University (BHU).- It conducts the examination through computer-based mode AP EAMCET 2020 -This exam is a state-level examination that grants admission into many courses of agricultural, pharmacy, and agricultural disciplines in participating colleges of Andhra Pradesh. -This examination is conducted online. CG PAT 2020 -This exam is conducted by Chhattisgarh Professional Examination Board, Raipur, for admission into BSc Agriculture and BSc Horticulture degree courses, offered by Indira Gandhi Agriculture University (IGAU). SAAT 2020 -SAAT is a national level exam conducted by Siksha Anusandhan (SOA) University for admission into various UG & PG courses. OUAT 2020 -This is a university-level exam conducted by Orissa University of Agriculture and Technology (OUAT) for admission into UG and Agro Polytechnic programs. Offline examination. Almost all the BSc Agriculture entrance exams are MCQ based and consist of questions from Biology, Chemistry, Physics at Class 10-12 level. There may be a section testing either Logical reasoning or General English skills of a candidate as well. One can easily prepare for these exams from the Class 12 NCERT books. If candidates want to practice, they can download sample papers and previous years questions papers from the internet to get an idea of the type of questions that one might face on the exam day.
BSc Agriculture Subjects The program structure is made in such a way that students can independently work in the future as an Agricultural Scientist, Agricultural Officer, Plant Breeder, Animal Breeder, etc. in different setups in both government and private sectors. A semester wise breakup of the syllabus of this undergraduate agricultural science course is mentioned below: Semester I and Semester II Fundamentals of Agronomy ,Fundamentals of Crop Physiology Fundamentals of Genetics, Fundamentals of Plant Biochemistry Fundamentals of Soil Science ,Fundamentals of Entomology-I Fundamentals of Horticulture ,Fundamentals of Agricultural Economics Rural Sociology & Educational Psychology ,Principles of Organic Farming Introduction to Forestry ,Fundamentals of Plant Pathology Introductory Animal Husbandry ,Production Technology for Vegetables and Spices Comprehension & Communication Skills in English, Fundamentals of Agricultural Extension Education Agricultural Heritage ,Food Processing and Safety Issues Introductory Biology or Basic Agriculture 1 Human Values & Ethics Elementary Mathematics or Basic AgricuIture 2, Soil and Water Conservation Engineering Semester III and Semester IV Crop Production Technology 1 (Kharif crops), Crop Production Technology II (Rabi crops) Practical Crop Production 1 (Kharif crops), Practical Crop Production II (Rabi crops) Fundamentals of Plant Breeding ,Principles of Seed Technology Agricultural Microbiology ,Problematic soils and their Management Agricultural Finance and Cooperation ,Renewable Energy and Green Technology Farm Machinery and Power ,Production Technology for Ornamental Crops, MAP and Landscaping Principles of Integrated Disease Management ,Entrepreneurship Development and Business Communication Environmental Studies & Disaster Management ,Introductory Agro-meteorology & Climate Change Dairy Science Poultry Production & Management Fundamentals of Entomology-II - Semester V and Semester VI Rainfed and dryland Agriculture Farming System, Precision Farming & Sustainable Agriculture Crop Improvement-1 (Kharif crops) ,Crop Improvement-II (Rabi crops) Pests of Crops and Stored Grain and their Management Manures, Fertilizers and Soil Fertility Management Agricultural Marketing Trade & Prices Farm Management, Production & Resource Economics Protected Cultivation and Secondary Agriculture Diseases of Field and Horticultural Crops and their Management-II Diseases of Field and Horticultural Crops and their Management-I Post-harvest Management and Value Addition of Fruits and Vegetables Production Technology for Fruit and Plantation Crops Watershed and Wasteland Management Communication Skills and Personality Development Beneficial insects and Pest of Horticultural Crops and their Management Intellectual Property Rights Elective-2 Principles of Food Science & Nutrition Educational Tour Geo-informatics and Nanotechnology - Elective-1 - Semester VII and Semester VIII General orientation & On-campus training by different faculties Production Technology for Bioagents and Biofertilizer Project Report Preparation, Presentation, and Evaluation- Seed Production and Technology - Mushroom Cultivation Technology - Soil, Plant, Water, and Seed Testing - Commercial Beekeeping.. The course also offers a number of elective subjects that one can opt for in the 5th and 6th semesters respectively. A candidate has the leverage to pursue the elective subjects of their choice. List of those subjects are provided below: Agribusiness Management ,Commercial Plant Breeding ,Food Safety and Standards ,Protected Cultivation ,Hi-Tech Horticulture ,Weed Management ,Agricultural Journalism ,Landscaping ,Agrochemicals ,Protected Cultivation ,BSc Agriculture Subjects ,Principles of Crop Production Fundamentals of Soil Science ,Elements of Genetics Agricultural Meteorology ,Elementary Crop Physiology Introductory Plant Physiology ,Principles of Plant Breeding Livestock Production and Management Introduction to Plant Biotechnology Silviculture
BSc Agriculture Colleges
Top BSc Agriculture Government Colleges
College Name :Fees (INR) ADAC&RI 70,825 Govind Ballabh Pant University of Agriculture and Technology 41,736 Junagadh Agricultural University 29,190 Indira Gandhi Krishi Vishwavidyalaya 14,710 Jawaharlal Nehru Krishi Vishwavidyalay 58,395 Anand Niketan College of Agriculture 12,202 Uttar Banga Krishi Vishwavidyalaya 4,000 Shivaji University 7,500 SDAU 28,990 Orissa University of Agriculture and Technology 53,064
Top BSc Agriculture Private Colleges College Name :Fees (INR) Mewar University 60,000 LMK 75,000 Ramkrishna Bajaj College of Agriculture 40,070 Vivekanand College of Agriculture 65,000 RKDF University 70,000 Dolphin PG Institute of Biomedical and Natural Sciences 75,000 TRIARD 40,000 Rai Technology University 1,50,000 Sai Nath University 58,000 DCAST 60,000
BSc Agriculture Scope
Students have a wide range of scope after completing BSc Agriculture. They may study Masters in Agricultural Sciences or MSc Course. MBA/PGDM Course is also an option that is readily available. The opportunity of government jobs are also there with IBPS, UPSC, FCI and others. Since the student is a graduate the student is eligible to participate in competitive exams for Government Jobs There is also the option of higher studies, pursuing a Masters in Agriculture through various agriculture entrance exams like ICAR PG, UPCATET, CMAFFU, and several others. Colleges and universities conduct entrance exams once a year to enroll aspiring students in the PG courses. Many colleges offer agricultural courses in India. ICAR is the regulating body. It has listed 4 deemed universities, 65 institutions, 14 national research centers, 6 national bureau, and 13 directorates/project directorates MSc Agriculture: MSc Agriculture is a postgraduate course of 2 years, educated in various perceived colleges in the nation. A portion of the top establishments incorporates the University of Calcutta, Tamil Nadu Agriculture University, Punjab Agricultural University. The MSc Agriculture course for the most part spins around horticultural examinations and different logical procedures that are associated with agribusiness. So as to be qualified for the course, the aspirants must have a BSc degree in subjects like Agriculture, Horticulture, or Forestry from a perceived college. An average fee charged to pursue this course is INR 50,000 to INR 1,50,000. After completion of this course, an aspirant will earn an average salary of INR 1-2.5 Lakhs per annum. Candidate can also go for other courses in the same discipline of agriculture. A few of those courses are given below. BSc (Hons) Agriculture BSc Agronomy BSc Agriculture Jobs After completing the course, graduates can find jobs in both the public and private sectors. The importance of agriculture is growing rapidly and thereby increasing job prospects in the field of agriculture. Today, there are a number of research projects and teaching work related to agriculture in many Agricultural departments, Extension services, Research organizations, Commercial farming, etc. The average annual salary offered to these professionals ranges between INR 2 to 8 LPA. It may be higher in the government sector. The Gazetted post of Government of India as Agricultural Officer (Agronomist) is one of the most prestigious jobs in the public sector after BSc Agriculture.
Job Profile Job Description Average Annual Salary Agriculture Officer ::An agriculture officer works with farmers and companies related to agriculture. The main role of an agriculture officer is to guide them to increase agriculture productivity. INR 9.60 LPA Assistant Plantation Manager :Assistant Plantation Manager is responsible for the efficient and profitable management of harvesting and other operations related to the plantation of crops or vegetables. INR 5.25 LPA Agricultural Research Scientist :Agricultural Research Scientists begin with doing research work. Comprising both lab work and fieldwork, they are mainly concerned with the biological processes of various things and their relations with products and processes. INR 6 LPA Agriculture Development Officer: Similar to an agriculture officer, an Agriculture Development Officer also works to improve the productivity of soil and other agricultural practices. INR 4.80 LPA Agriculture Technician :Agricultural Technicians do work related to food, fiber, animal research, production, and processing by inventing methods to improve the yield of crops and protect animals from diseases. INR 3.5 LPA Marketing Executive: A Marketing Executive promotes a product and develops sales strategies to attract customers and satisfy their requirements in order to maximize profits. It is one of the most popular job profiles in the corporate world. INR 3.46 LPA Plant Breeder: Plant Breeders innovate and develop new strategies, tools, and technologies to improve the yield of major crops in India. INR 7.76 LPA Seed Technologist :Seed Technologists provide support to seed growers by helping them with operations of seed equipment, planting of seeds and, and seed scouting. INR 3.25 LPA


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{% extends "base.html" %} {% block title %} Home {% endblock %} {% block content %}
Upload a recording of you playing guitar. Serenade robot. Robot writes tab. Repeat.
| Title | Artist | |
|---|---|---|
| {{ tab.fk_mid.title }} | {{ tab.fk_mid.artist }} | View |
Perform fundamental frequency estimation on an audio file. Returns an MEI file containing the pitch information.
Generate playable guitar tablature from a symbolic music file in MusicXml or MEI format and display it in the web browser.
Perform pitch estimation followed by tablature generation to automatically create guitar tablature from your guitar recording.


“Catukkhattuṁ pañcakkhattuṁ,
vihārā upanikkhamiṁ;
Aladdhā cetaso santiṁ,
citte avasavattinī.
Four or five times
I left my dwelling;
I had failed to find peace of heart,
or any control over my mind.
Bhikkhuniṁ upasaṅkamma,
sakkaccaṁ paripucchahaṁ;
Sā me dhammamadesesi,
dhātuāyatanāni ca.
I approached a nun
and politely questioned her.
She taught me the Dhamma:
the elements and sense fields,
Cattāri ariyasaccāni,
indriyāni balāni ca;
Bojjhaṅgaṭṭhaṅgikaṁ maggaṁ,
uttamatthassa pattiyā.
the four noble truths,
the faculties and the powers,
the awakening factors, and the eightfold path
for the attainment of the highest goal.
Tassāhaṁ vacanaṁ sutvā,
karontī anusāsaniṁ;
Rattiyā purime yāme,
pubbajātimanussariṁ.
After hearing her words,
I did her bidding.
In the first watch of the night,
I recollected my past lives.
Rattiyā majjhime yāme,
dibbacakkhuṁ visodhayiṁ;
Rattiyā pacchime yāme,
tamokhandhaṁ padālayiṁ.
In the middle watch of the night,
I purified my clairvoyance.
In the last watch of the night,
I shattered the mass of darkness.
Pītisukhena ca kāyaṁ,
Pharitvā vihariṁ tadā;
Sattamiyā pāde pasāresiṁ,
Tamokhandhaṁ padāliyā”ti.
I then meditated pervading my body
with rapture and bliss.
On the seventh day I stretched out my feet,
having shattered the mass of darkness.
…
Vijayā therī ….


|
xml:Proof <a schema for the rest of us/> |
v.02.06.10 Beta Thomas Sawyer (c)2002 |
<tagname>
and attrtibute tags will be notated as tagname=
<proofsheet>
.
The root tag can take the alternate form of <schema>
.
Both forms of the root tag serve the exact same purpose.<arbit>
tag is a special xml:Proof tag used to indicate arbitrary
location within the target document. It has single valid attribute, xpath=
,
which specifies the valid XPath to be matched against in the target document.xp:
for consistancy and clearity.xpath=
attribute, is a die.=name=
/regular expression/
/.*/
:datatype:
datatype marker
is an arbitrary symbol, enclosed by colons, naming the type of data to be contanied
by an element or attribute of the target document.string
.@order@
order
are tag
, content-a..z
,
content-z..a
and none
.tag
value specifies that the child elements must be in the order as given within
the proofsheet.content-a..z
and content-z..a
values specify that the child element's
must appear in alphanumerical sequence, descending and ascending, respectively, by their first text node.none
value specifies that the child elements need not appear in any particular order, and is the
default setting if no order marker is specified within a die.
+set+
set
are inclusive
, exclusive
and
none
.inclusive
value indicates that all the children elements must be present as given by the proofsheet,
but other elements may appear along with them.exclusive
value indicates that all the children elements must be present as given by the proofsheet,
and that no other elements may appear along with them.none
indicates no requirments for the appearnece of child elements, and is the default
if no set marker is specified in the die.#range#
range
can be m..n
or m...n
,
inclusive and exclusive of n
, respectively, where m
and n
are unsigned integers
and m
< n
, such thah m is the minimum number and n is the maximum number.m..*
, equivalant to m...*
specifying a minimum number (m) and an unbound maximum number.0..*
.range
can only be 0..1
or 1..1
.0..1
.?option?
option
do not need to belong to the same parent, although
this can create a contridiction should an ancestor and one of its children partake of the same option group,
rendering a document invalid by definition.!collection!
*track*
track
are yes
, no
, true
,
or false
, with the negative notations being the default..xps
.http://www.transami.net/namespace/xmlproof
.<?xml:schema uri="uri" url="url" segment="segment"?>
uri
attribute, or its synonym space
, defines the kind of schema that is being utilized.
This is the specific namespace uri as defined by the schema's designers. In the case of xml:Proof, it
is "http://www.transami.net/namespace/xmlproof". It would be another string for, say, RELAX-NG or Schematron.url
attribute, or its synonym source
is a path to
the .xps file. The url can be a local path. The url is neccessary since proofsheets cannot be embedded in the
target document like DTDs can.segment
attribute, or its synonym fragment
is an optional attribute
specifying an XPath which selects only a portion of the .xps file to use as the proofsheet.<?xml:ns prefix="prefix" uri="uri"?>
prefix
and uri
attribute tags can also be labeled
name
and space
, respectively.<!DocType docname [ <!ATTLIST docname xmlns:prefix 'uri' CDATA> ]>


“Arclomedarian crosses us again. It meddles more and more. It has met with these new Radiants. ”
—Yelamaiszin the First[1]
Unlike many of the other Sleepless living on Roshar, Arclo is not participating in guarding Akinah and the Dawnshard that is being hidden there. It does not follow Yelamaiszin the First, the leader of most of the Sleepless on Roshar, who consider Arclo's meeting with Knights Radiant to be dangerous. Due to this and other "meddling" the other Sleepless have cut Arclo off from their communications.[1]


Mexican Chicken Soup
Ingredients
- 1 1/4 pounds boneless skinless chicken breast halves
- 2 tablespoons taco seasoning mix
- Ortega Taco Seasoning Mix
- 1 tablespoon vegetable oil
- 1/2 cup chopped onions
- 1/2 cup chopped celery
- 2 teaspoons ground cumin
- 1/4 teaspoon ground black pepper
- 1 cup water 3 (14 ounce) cans chicken broth
- 1 cup diced tomatoes
- 1 tablespoon chopped fresh cilantro
- 1 cup shredded Cheddar cheese
- 1 cup crushed tortilla chips
- Tostitos Tortilla Chips Bite Size Rounds
Directions
- Preheat oven to 350 degrees F (175 degrees C). Lay chicken breasts onto a baking sheet and sprinkle with 1 tablespoon taco seasoning mix. Bake for 30 to 35 minutes, cool and shred or cut into strips.
- While the chicken is cooking, heat oil in a stockpot and cook the onions and celery until soft. Stir in the water and chicken broth. Season with cumin, black pepper and remaining taco seasoning mix. Simmer for 30 minutes for the flavors to mingle. Add the tomatoes, cilantro and chicken, simmer for 5 more minutes. Serve hot topped with avocado, shredded cheese and crushed tortilla chips.


Good Vibes Form
Tell us something positive that happened to you today.
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At what time of day did it happen?
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What emotions did you experience?
(Select all that apply)
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Please describe your positive experience.
Submit


Bacon ipsum dolor amet fatback capicola beef andouille, jowl sausage ham hock chicken tenderloin.  Salami flank burgdoggen short ribs boudin hamburger.
Prosciutto bacon biltong shoulder doner. Flank doner ham hock, turkey sirloin porchetta tri-tip salami ham. Pig beef ribs ground round swine venison pancetta filet mignon capicola prosciutto shank boudin tri-tip. Chuck fatback kevin, cupim beef ribs doner short ribs spare ribs kielbasa pastrami turkey bresaola bacon.
Sausage tri-tip picanha ground round, turducken drumstick andouille strip steak landjaeger short loin bacon salami spare ribs jerky kevin. Jowl brisket doner kielbasa pancetta cow pork hamburger ham hock. Pancetta bacon biltong, pork belly shoulder doner salami kevin beef ribs filet mignon andouille hamburger short ribs. Landjaeger leberkas pork belly drumstick.
Bacon ipsum dolor amet fatback capicola beef andouille, jowl sausage ham hock chicken tenderloin.  Salami flank burgdoggen short ribs boudin hamburger.
Prosciutto bacon biltong shoulder doner. Flank doner ham hock, turkey sirloin porchetta tri-tip salami ham. Pig beef ribs ground round swine venison pancetta filet mignon capicola prosciutto shank boudin tri-tip. Chuck fatback kevin, cupim beef ribs doner short ribs spare ribs kielbasa pastrami turkey bresaola bacon.
Sausage tri-tip picanha ground round, turducken drumstick andouille strip steak landjaeger short loin bacon salami spare ribs jerky kevin. Jowl brisket doner kielbasa pancetta cow pork hamburger ham hock. Pancetta bacon biltong, pork belly shoulder doner salami kevin beef ribs filet mignon andouille hamburger short ribs. Landjaeger leberkas pork belly drumstick.


Home
Example
Documentation
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Why
Angular Grid is a powerful and flexible data grid for AngularJS.


Part of pymine.beautifulsoup.BeautifulSoup View In Hierarchy
Known subclasses: pymine.beautifulsoup.BeautifulSoup.BeautifulSOAP, pymine.beautifulsoup.BeautifulSoup.BeautifulSoup, pymine.beautifulsoup.BeautifulSoup.RobustXMLParser
This class contains the basic parser and search code. It defines a parser that knows nothing about tag behavior except for the following: You can't close a tag without closing all the tags it encloses. That is, "<foo><bar></foo>" actually means "<foo><bar></bar></foo>". [Another possible explanation is "<foo><bar /></foo>", but since this class defines no SELF_CLOSING_TAGS, it will never use that explanation.] This class is useful for parsing XML or made-up markup languages, or when BeautifulSoup makes an assumption counter to what you were expecting.
| Method | __init__ | The Soup object is initialized as the 'root tag', and the |
| Method | convert_charref | This method fixes a bug in Python's SGMLParser. |
| Method | _feed | Undocumented |
| Method | __getattr__ | This method routes method call requests to either the SGMLParser |
| Method | isSelfClosingTag | Returns true iff the given string is the name of a |
| Method | reset | Undocumented |
| Method | popTag | Undocumented |
| Method | pushTag | Undocumented |
| Method | endData | Undocumented |
| Method | _popToTag | Pops the tag stack up to and including the most recent |
| Method | _smartPop | We need to pop up to the previous tag of this type, unless |
| Method | unknown_starttag | Undocumented |
| Method | unknown_endtag | Undocumented |
| Method | handle_data | Undocumented |
| Method | _toStringSubclass | Adds a certain piece of text to the tree as a NavigableString |
| Method | handle_pi | Handle a processing instruction as a ProcessingInstruction |
| Method | handle_comment | Handle comments as Comment objects. |
| Method | handle_charref | Handle character references as data. |
| Method | handle_entityref | Handle entity references as data, possibly converting known |
| Method | handle_decl | Handle DOCTYPEs and the like as Declaration objects. |
| Method | parse_declaration | Treat a bogus SGML declaration as raw data. Treat a CDATA |
Inherited from Tag:
| Method | _invert | Cheap function to invert a hash. |
| Method | _convertEntities | Used in a call to re.sub to replace HTML, XML, and numeric |
| Method | getString | Undocumented |
| Method | setString | Replace the contents of the tag with a string |
| Method | getText | Undocumented |
| Method | get | Returns the value of the 'key' attribute for the tag, or |
| Method | clear | Extract all children. |
| Method | index | Undocumented |
| Method | has_key | Undocumented |
| Method | __getitem__ | tag[key] returns the value of the 'key' attribute for the tag, |
| Method | __iter__ | Iterating over a tag iterates over its contents. |
| Method | __len__ | The length of a tag is the length of its list of contents. |
| Method | __contains__ | Undocumented |
| Method | __nonzero__ | A tag is non-None even if it has no contents. |
| Method | __setitem__ | Setting tag[key] sets the value of the 'key' attribute for the |
| Method | __delitem__ | Deleting tag[key] deletes all 'key' attributes for the tag. |
| Method | __call__ | Calling a tag like a function is the same as calling its |
| Method | __eq__ | Returns true iff this tag has the same name, the same attributes, |
| Method | __ne__ | Returns true iff this tag is not identical to the other tag, |
| Method | __repr__ | Renders this tag as a string. |
| Method | __unicode__ | Undocumented |
| Method | _sub_entity | Used with a regular expression to substitute the |
| Method | __str__ | Returns a string or Unicode representation of this tag and |
| Method | decompose | Recursively destroys the contents of this tree. |
| Method | prettify | Undocumented |
| Method | renderContents | Renders the contents of this tag as a string in the given |
| Method | find | Return only the first child of this Tag matching the given |
| Method | findAll | Extracts a list of Tag objects that match the given |
| Method | fetchText | Undocumented |
| Method | firstText | Undocumented |
| Method | _getAttrMap | Initializes a map representation of this tag's attributes, |
| Method | childGenerator | Undocumented |
| Method | recursiveChildGenerator | Undocumented |
Inherited from PageElement (via Tag):
| Method | setup | Sets up the initial relations between this element and |
| Method | replaceWith | Undocumented |
| Method | replaceWithChildren | Undocumented |
| Method | extract | Destructively rips this element out of the tree. |
| Method | _lastRecursiveChild | Finds the last element beneath this object to be parsed. |
| Method | insert | Undocumented |
| Method | append | Appends the given tag to the contents of this tag. |
| Method | findNext | Returns the first item that matches the given criteria and |
| Method | findAllNext | Returns all items that match the given criteria and appear |
| Method | findNextSibling | Returns the closest sibling to this Tag that matches the |
| Method | findNextSiblings | Returns the siblings of this Tag that match the given |
| Method | findPrevious | Returns the first item that matches the given criteria and |
| Method | findAllPrevious | Returns all items that match the given criteria and appear |
| Method | findPreviousSibling | Returns the closest sibling to this Tag that matches the |
| Method | findPreviousSiblings | Returns the siblings of this Tag that match the given |
| Method | findParent | Returns the closest parent of this Tag that matches the given |
| Method | findParents | Returns the parents of this Tag that match the given |
| Method | _findOne | Undocumented |
| Method | _findAll | Iterates over a generator looking for things that match. |
| Method | nextGenerator | Undocumented |
| Method | nextSiblingGenerator | Undocumented |
| Method | previousGenerator | Undocumented |
| Method | previousSiblingGenerator | Undocumented |
| Method | parentGenerator | Undocumented |
| Method | substituteEncoding | Undocumented |
| Method | toEncoding | Encodes an object to a string in some encoding, or to Unicode. |
The Soup object is initialized as the 'root tag', and the provided markup (which can be a string or a file-like object) is fed into the underlying parser. sgmllib will process most bad HTML, and the BeautifulSoup class has some tricks for dealing with some HTML that kills sgmllib, but Beautiful Soup can nonetheless choke or lose data if your data uses self-closing tags or declarations incorrectly. By default, Beautiful Soup uses regexes to sanitize input, avoiding the vast majority of these problems. If the problems don't apply to you, pass in False for markupMassage, and you'll get better performance. The default parser massage techniques fix the two most common instances of invalid HTML that choke sgmllib:
 (No space between name of closing tag and tag close) <! --Comment--> (Extraneous whitespace in declaration) You can pass in a custom list of (RE object, replace method) tuples to get Beautiful Soup to scrub your input the way you want.
We need to pop up to the previous tag of this type, unless one of this tag's nesting reset triggers comes between this tag and the previous tag of this type, OR unless this tag is a generic nesting trigger and another generic nesting trigger comes between this tag and the previous tag of this type. Examples:
FooBar *
* should pop to 'p', not 'b'.
Foo
Bar *
* should pop to 'table', not 'p'.
Foo

Bar *
* should pop to 'tr', not 'p'.

 *
* should pop to 'ul', not the first 'li'.

 *
* should pop to 'table', not the first 'tr'
 ** should pop to 'tr', not the first 'td'


|
Crystal SDK 2.1 for iOS Version 2.1 build 0221
|
Welcome to the Crystal SDK for iOS API documentation.
Crystal is one of the leading social gaming platforms on the iOS platform, serving millions of active users per day.
It provides users and developers with the following premium features:
This documentation details the Crystal SDK API's that allows developers to enable these features within their applications.
Please refer to our extensive developer support documentation for installation instructions and integration within both a standard XCode project as well as a Unity based project.
Please see the Release Notes for the latest Crystal SDK changes as well as changes for previous releases.
For further information regarding Crystal integration as well as FAQ's please visit our developer support documentation.
All other queries should be directed to Crystal Developer Support.


Hi, I am Robert, Web developer from Austin Texas, US. I am passionate about design, development and interaction. I really love what I do.
Hi, I am Robert Wolfric McCarty. A junior web designer and full-stack developer based in US.
"I was born in New Albany Mississippi in 1995. My family moved around quite often, most of my life was spent in the mountains of West Virginia. After 10 years in West Virginia my father passed on, not long after mom remarried and we moved Michigan. I stayed in Michigan for 2 years trying to figure out my life and career ,so i decided to move out on my own in February of 2019 to Austin Texas, Shortly after I moved to Texas I decided to try my hand at software development, I started looking at the posbilities and decided to go with a coding bootcamp. It was the best decision that could have been made, I've been at this bootcamp for months and have learned so much about this industry. I'm ready to put my new skills to use in this industry, all I need is a chance."
This is a selection of my web design and development work. I've been involve in many different types of projects.
This is the first full website I have made from the ground up. I have experience with a few hosting services such as AWS and Github Pages. I have made back-end express servers for route handling, as well as API calling, data parsing, and mailling. I have experience with templating engines, front-end technologies such as bootstrap, react, and others. In addition I also have experience with databases such as MongoDB, SQL, noSQL, and Postgres.


Event Location:
Guelph-Humber Building, Humber College
205 Humber College Boulevard
Toronto, Ontario, Canada
Abstract:
The addition of virtualization support has changed the way architects and DBAs need to look at availability in the SQL Server world. How does Hyper-V Live Migration or vMWare's vMotion work in conjunction with existing SQL Server availability technologies like log shipping, database mirroring, or replication? As you architect your SQL Server infrastructure virtually, what do you need to know to ensure that you help provide the best solution using available technologies? Through demonstration using a scenario-based approach, learn when and how to use virtualization availability features and Windows Failover Clustering in combination with SQL Server technologies and the impact of combining them. See how Live Migration does not cover you in al
Speaker(s): Michael Lato,
Abstract:
Are you interested to know how SQL Server utilize indexes for data accessing, modification, joins and aggregates, and why an index cannot be utilized? This is what we are going to talk about -- from index internal to stragegies.
Speaker(s): John Huang,
Abstract:
Too many times, database maintenance and deployment represent a challenge during application development. And now with Visual Studio 2010, Oracle databases are first class citizens of development solutions. This session will demonstrate how Visual Studio Database Development Tools can ease database managements, deployment and version control integration. New features of 2010 will be covered as well as database unit testing and data generation. Developers will learn how database can be part of their Visual Studio solutions and how easy it is to deploy database objects with other projects.
Speaker(s): Christian Cote,
Abstract:
Okay, you’ve run the Wizard and have Replication up and running; but how does it really work? Learn the behind the scenes for Transactional Replication as we follow the data from Publisher to Subscriber. We’ll look at both design and troubleshooting techniques to ensure your data is moving at near-real-time through your topology.
Speaker(s): Chris Skorlinski,
Abstract:
Creating a SQL Server 2008 Failover Cluster on Windows Server 2008 has become a lot easier with the availability of online resources such as blog posts and articles. However, making it easy does not mean ignoring the basic principles of the underlying technology. In this session, learn the fundamentals and principles behind how Windows Failover Clustering works and how SQL Server leverages on the technology, allowing you to build highly available database infrastructures.
Speaker(s): Edwin Sarmiento,
Abstract:
While many teams are now using Visual Studio for database project development, few have begun to take advantage of build contributors. Build contributors represent a powerful technology that is particularly adept at responding to changes in the database project. This technology can enable integration scenarios which might otherwise be difficult or time-consuming, such as automatically updating documentation or installation scripts. In this session, you will understand how build contributors are enabled, and see this technology in action.
Speaker(s): Robert Schoedel,
Abstract:
Using Windows Powershell presents us with many of options never seen before. You can easily execute SQL Queries to manage legacy systems, Manipulate console and Vbscript applications, and extend Applications run via webproxy as well as built in Regex. This session is intended shatter the myth that using Poweshell means trashing the legacy.
Speaker(s): Sean Kearney,
Abstract:
Scott's gentle introduction to SQL Server Integration Services (or SSSIS) will primarily be demonstrating how to you can use this tool in the real world to get work done. READ: very little PowerPoint time. SSIS is a high performance ETL solutions introduced in SQL Server 2005 to replace SQL Server's DTS functionality. ETL? It's okay, Scott will briefly cover some of these concepts too. Relax, sit back and learn how to simplify your "Extract, Transform, and Load" processes.
Speaker(s): Scott Stauffer,
Abstract:
More and more companies are virtualizing with VMWare, and databases are the next logical step. This presentation will explore the fundamentals of monitoring databases running in a VMWare environment because it can be much different than when running on a physical machine. You will learn business and technical benefits of virtualization, master new terms and concepts, pick up useful planning tips and tricks, and cover best practices for maintaining optimum performance in a VMWare environment.
Speaker(s): Janis Griffin,
Abstract:
This instructor lead workshop encourages open dialog by all attendees as they share experience and best practices around key SQL Server DBA topics like 1) how big is your database? 2) Disaster planning, 3) security, security, security, 4) common server best practices, 4) common SQL best practices
Speaker(s): Chris Skorlinski,
Abstract:
Nothing is more frightening to a DBA as getting that wake-up phone call that the system is down, especially when it's a mission critical one.This session will focus on being prepared for and dealing with a recovery situation for a SQL Server 2005/2008 database, an instance or an entire server. Topics covered will be backup schemes, partial backups and piecemeal restores, and page-level recovery
Speaker(s): Edwin Sarmiento,
Abstract:
This is the session help developers to interpret the query plans, understand frequently seen operators and properties in the plan. At the end, it will show how SQL Server estimates the cost of operators and how SQL Server make decisions to choose a plan out of numerous alternatives.
Speaker(s): John Huang,
Abstract:
Are you looking for a career change? Good News! Technology is back on the move and companies are again hiring. We’ll cover key strategies you can use during the interviews first 10 minutes to increase chances for a new job and new adventure.
Speaker(s): Chris Skorlinski,
Abstract:
Your databases are getting bigger and busier and you need to make the most out of the hardware you have. On your servers, excessive locking can often cause timeouts and database traffic jams! In this session I explore steps you can take to address unexpected locking issues. I also explain what steps to take to avoid contention in the future. Lots of examples taken from experience.
Speaker(s): Michael Swart,
Abstract:
SQL Server administrators are looking for a better way to protect and recover SQL Server databases. In this session Islam is going to present how to back up your SQL Server efficiently using System Center Data Protection Manager 2010, he will show cases on how to backup advanced SQL Server configuration such as SQL Server clustering, SQL Server mirrored databases, log shipping or Simple recovery model” configurations.
Speaker(s): Islam Gomaa,
Abstract:
Microsoft Sync Framework is a comprehensive synchronization platform that enables collaboration and offline access for applications, services and devices. It features technologies and tools that enable roaming, sharing, and taking data offline. Using Microsoft Sync Framework, developers can build sync ecosystems that integrate any application, with any data from any store using any protocol over any network.
Speaker(s): Jean Rene Roy,
Abstract:
SQL Server query tuning is often more art than science and it can quickly eat up a lot of DBA and/or Developer time. This presentation will outline a method for determining the best approach for tuning queries by utilizing response time analysis and SQL Diagramming techniques. Regardless of the complexity of the statement, this quick, systematic approach will lead you down the correct tuning path with no guessing.
Speaker(s): Janis Griffin,
Abstract:
Brain hurting from technology overload? The endless talk about cloud? Private cloud, public cloud, Windows Azure, SQL Azure, Office 365, Cloud is everywhere! When it comes to SQL though, there’s good news - if you know SQL Server, you already know 90% of SQL Azure. In this session, you’ll learn the differences between SQL Server and SQL Azure and how you can use your existing SQL knowledge to start creating solutions in the Cloud.
Speaker(s): Michael Lato,
Abstract:
Can T-SQL be run in multi-threaded manner? Yes, this session will explain how to use TSQL to implement multi-threading application, including process control, resource access, execution ordering, synchronization, semaphore, etc. If you are looking for a solution to turn your processes to run in parallel, you should not miss it.
Speaker(s): John Huang,
Abstract:
While SSIS is a great tool to extract and load data, how can we validate the data while loading it? In this session I will talk about different validations strategies that I have been using over the years to ensure that the old adage “Garbage in, garbage out” is not necessarily true.
Speaker(s): Christian Cote,
Abstract:
Many of the Developers and DBAs have the XML syndrome. We can’t blame them because XML document are not simple. But what most Developers and DBA don’t know is how SQL Server can help you overcome the XML syndrome. XML is here to say, we will need to save some XML in the database more often than ever. This session will cover usable scenarios when using Xpath, Xquery the XML type in SQL server and the XSD. We will look at the different tools available in SQL Server Management Studio (SSMS) and Visual Studio (VS). This is the chance to bring the DBA and Developer to the same level in using XML in SQL Server.
Speaker(s): Jean Rene Roy,
Abstract:
Many query performance problems follow similar patterns. Thankfully, the solutions are also similar. In this session, you’ll learn how to identify and correct seven common causes of slow performance.
Speaker(s): Robert Schoedel,
Abstract:
Delivering reports is becoming more critical due to the increasing demand for business intelligence solutions. And while there are a lot of guides that walk us through building a highly available database engine, you’ll rarely see one for SQL Server Reporting Services. This session will walk you through building a scale-out SQL Server 2008 R2 Reporting Services farm from the ground up. You’ll be surprised how easy it is to do so that you can start building your own test environment.
Speaker(s): Edwin Sarmiento,
Abstract:
In this presentation you will learn (high level) how Microsoft SQL Server Analysis Services (SSAS) stores MOLAP data in database folder. Then you will see how using this information you can quickly calculate size of the cube, measure group, partition, dimension, attributes and aggregations. You will also learn how some dimension attribute changes affects your fact data size.
Speaker(s): Vidas Matelis,
This is a list of speakers from the XML Guidebook records. The details and URLs were valid at the time of the event.
LinkedIn: http://www.sqlnotes.info
Contact: http://www.sqlnotes.info
John Huang, SQL MCM and MVP, has been working with SQL Server since 1994. He is an independent SQL Server consultant in Vancouver specialized in complex data processing, data warehouse, and performance tuning.
Contact: http://owsug.ca/blogs/islamgomaa/
Islam Gomaa is a Data Protection Manager MVP from Ottawa, Canada, specialised in System Center Products, disaster recovery and system infrastructures running on the Microsoft server technology stack. Islam brings over 12 years of expertise in helping organizations align their business goals using Microsoft technology and deploying Microsoft-based solutions for the private and public sector He is also a member of the Windows Springboard Technical Expert Panel [STEP] for Windows 7 and Server 2008.
Contact: http://bassplayerdoc.wordpress.com
Edwin Sarmiento is a SQL Server MVP from Ottawa,Canada specializing in high availability,disaster recovery system infrastructures running on the Microsoft server technology stack.He is very passionate about technology but has interests in music,professional organizational development,leadership management matters when not working with databases.He lives up to his primary mission statement -“To help people and organizations grow and develop their full potential as God has planned for them."
LinkedIn: http://www.linkedin.com/pub/janis-griffin/0/914/aba
Janis Griffin has over 30 years of DBA/database experience including design, development and implementation of many critical database applications. Before coming to Quest Software, Janis primarily worked in the Telecom/Network Industry, working with both real-time network routing databases and OLTP business to business applications. Janis also held positions as a Principal Architect and Senior Manager, mentoring other DBAs on best practices in database performance tuning.
Chris Skorlinski has been with Microsoft for 17 years. He is a Support Escalation Engineer at the Microsoft Charlotte NC office specializing in performance tuning and troubleshooting Replication. His is a contributor to SQLShare.com training as well as his own BLOGs on Replication Performance at http://blogs.msdn.com/ReplTalk/. #160;
Contact: http://www.powershell.ca
Sean Kearney is an infrastructure support analyst and Microsoft MVP in Window PowerShell. He is absolutely passionate about automation technologies—especially Windows PowerShell. If you say, “Powershell,” he may just break into song. Sean considers himself “just a tech at heart,” but he can often be found dabbling with most Microsoft technologies at a moment’s notice. He is also the voice and words behind "A Powershell Carol" on "Hey Scripting Guy" from our recent Holiday Season
LinkedIn: http://www.sqlnotes.info
Contact: http://www.sqlnotes.info
John Huang, SQL MCM and MVP, has been working with SQL Server since 1994. He is an independent SQL Server consultant in Vancouver specialized in complex data processing, data warehouse, and performance tuning.
Contact: http://bassplayerdoc.wordpress.com
Edwin Sarmiento is a SQL Server MVP from Ottawa,Canada specializing in high availability,disaster recovery system infrastructures running on the Microsoft server technology stack.He is very passionate about technology but has interests in music,professional organizational development,leadership management matters when not working with databases.He lives up to his primary mission statement -“To help people and organizations grow and develop their full potential as God has planned for them."
LinkedIn: http://www.sqlnotes.info
Contact: http://www.sqlnotes.info
John Huang, SQL MCM and MVP, has been working with SQL Server since 1994. He is an independent SQL Server consultant in Vancouver specialized in complex data processing, data warehouse, and performance tuning.
LinkedIn: http://www.linkedin.com/pub/janis-griffin/0/914/aba
Janis Griffin has over 30 years of DBA/database experience including design, development and implementation of many critical database applications. Before coming to Quest Software, Janis primarily worked in the Telecom/Network Industry, working with both real-time network routing databases and OLTP business to business applications. Janis also held positions as a Principal Architect and Senior Manager, mentoring other DBAs on best practices in database performance tuning.
Contact: http://michaeljswart.com
Michael J Swart is an active blogger and SQL Server MVP since 2012. He works as a database developer in Kitchener, Ontario, Canada.
LinkedIn: http://www.linkedin.com/in/scottstauffer
Contact: http://scottstauffer.ca
Scott Stauffer (@SQLSocialite) is very PASSionate about data and enjoys meeting with like-minded data geeks. He started the Vancouver PASS Chapter in 2004. In 2008, Scott was recognized by Microsoft with a SQL Server MVP award. In 2009, Scott started a PASS BI Chapter in Vancouver, and was also at one time the PASS Regional Chapter Mentor for Canada. For over 10 years he has been an independent consultant working with clients to solve their data woes and extract insight from their business data.
LinkedIn: https://ca.linkedin.com/in/ccote
Contact: http://bi-blogger.typepad.com/
Christian Coté is an IT professional with more than 15 years of experience working in data warehouse and business intelligence projects. Christian developed an expertise in data warehousing over the years and designed many ETL/BI processes using a range of tools on multiple platforms. He's been presenting at several conferences and code camps. He currently co-leads the SQL Server PASS chapter in Montreal as well as Global French SQL PASS Chapter. He is also a Microsoft Data Platform Most Valuable Professional (MVP).
Rob Schoedel is a database architect at IDI Billing Solutions, a Microsoft Gold Certified Partner in Victor, NY. Prior to IDI, Rob spent 15 years leading internal database development projects at Microsoft. A veteran of SQL Server, Rob first trained on SQL 1.1 in 1992.
Michael Lato has more than 10 years of experience consulting on various database systems with a special focus in the CRM (Customer Relationship Management) field. Michael’s roles have included project manager, system designer and trainer. He is currently the senior SQL Server developer and database administrator for an international in-building wireless company.
LinkedIn: https://ca.linkedin.com/in/ccote
Contact: http://bi-blogger.typepad.com/
Christian Coté is an IT professional with more than 15 years of experience working in data warehouse and business intelligence projects. Christian developed an expertise in data warehousing over the years and designed many ETL/BI processes using a range of tools on multiple platforms. He's been presenting at several conferences and code camps. He currently co-leads the SQL Server PASS chapter in Montreal as well as Global French SQL PASS Chapter. He is also a Microsoft Data Platform Most Valuable Professional (MVP).
Contact: http://bassplayerdoc.wordpress.com
Edwin Sarmiento is a SQL Server MVP from Ottawa,Canada specializing in high availability,disaster recovery system infrastructures running on the Microsoft server technology stack.He is very passionate about technology but has interests in music,professional organizational development,leadership management matters when not working with databases.He lives up to his primary mission statement -“To help people and organizations grow and develop their full potential as God has planned for them."
Michael Lato has more than 10 years of experience consulting on various database systems with a special focus in the CRM (Customer Relationship Management) field. Michael’s roles have included project manager, system designer and trainer. He is currently the senior SQL Server developer and database administrator for an international in-building wireless company.
Contact: http://www.ssas-info.com/VidasMatelisBlog/
Vidas Matelis is Business Intelligence Consultant who specializes in building data warehouse solutions using Microsoft technologies (SQL Server, SSAS, SSIS and PowerPivot). He has more than 12 years of experience in this area. He maintains popular websites http://ssas-info.com and http://powerpivot-info.com. His blog can be found here: http://www.ssas-info.com/VidasMatelisBlog/. He is Microsoft SQL Server MVP.
Chris Skorlinski has been with Microsoft for 17 years. He is a Support Escalation Engineer at the Microsoft Charlotte NC office specializing in performance tuning and troubleshooting Replication. His is a contributor to SQLShare.com training as well as his own BLOGs on Replication Performance at http://blogs.msdn.com/ReplTalk/. #160;
LinkedIn: http://www.linkedin.com/in/jeanreneroy
Contact: http://www.softdesign.ca/blog
Jean-Ren#233; Roy has been developing IT solution for large and small enterprises since 1987. In 1991 he founded the consulting firm Technologies SoftDesign Inc. Since that time he has worked on projects for House of Commons, Innovapost, Bell Canada, CGI, CNSC, Kraft, and many other clients assuming the responsibility of Business Analyst, Software Architect,ETL and BI Architect, Software Developers, Analyst, Team leader and mentor. Jean-Ren#233; Roy is a SQL Server Microsoft MVP.
Chris Skorlinski has been with Microsoft for 17 years. He is a Support Escalation Engineer at the Microsoft Charlotte NC office specializing in performance tuning and troubleshooting Replication. His is a contributor to SQLShare.com training as well as his own BLOGs on Replication Performance at http://blogs.msdn.com/ReplTalk/. #160;
Rob Schoedel is a database architect at IDI Billing Solutions, a Microsoft Gold Certified Partner in Victor, NY. Prior to IDI, Rob spent 15 years leading internal database development projects at Microsoft. A veteran of SQL Server, Rob first trained on SQL 1.1 in 1992.
LinkedIn: http://www.linkedin.com/in/jeanreneroy
Contact: http://www.softdesign.ca/blog
Jean-Ren#233; Roy has been developing IT solution for large and small enterprises since 1987. In 1991 he founded the consulting firm Technologies SoftDesign Inc. Since that time he has worked on projects for House of Commons, Innovapost, Bell Canada, CGI, CNSC, Kraft, and many other clients assuming the responsibility of Business Analyst, Software Architect,ETL and BI Architect, Software Developers, Analyst, Team leader and mentor. Jean-Ren#233; Roy is a SQL Server Microsoft MVP.
The following is a list of sponsors that helped fund the event.


| eu.monnetproject.lemon.LemonModel |
| Known Indirect Subclasses |
Interface that contains a set of lexica and manages the URIs for all elements of the model. The seperation of URIs and the structure of the lemon model is intended to allow for models to be created quickly as individual elements frequently have stereotypical URIs.
| Constants | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| String | LEMON_URI | The URI for lemon |
| Public Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Add a lexicon
| |||||||||||
Get the base URI of the model.
| |||||||||||
Get the factory for making new elements
| |||||||||||
Get the set of lexica contained by this model
| |||||||||||
Merge two elements
| |||||||||||
Return all elements in the lemon model matching some certain SPARQL query
| |||||||||||
Remove a lexicon from the repository.
|
The URI for lemon
Get the base URI of the model. If this is not clear return the prefix of the first lexicon object
Get the set of lexica contained by this model
Merge two elements
| from | The element to be removed |
|---|---|
| to | The element to be preserved |
Return all elements in the lemon model matching some certain SPARQL query
| target | The class of the target |
|---|---|
| sparqlQuery | The query in sparql, must be a select query returning a single variable |
Remove a lexicon from the repository. Note this does not remove any entries or other information contained in the lexicon, this must be done manually


{% extends 'base.html' %} {% load staticfiles %} {% load AddCSSToTemplatesTag %} {% block CUSTOM_IMPORTS %} {% endblock %} {% block BODY %}
#} {{ landing_page.get_description|safe }} {#
#}{{ feature.get_description }}
"Here we are, 2013, we ALL depend on technology to communicate, to bank, and none of us know how to read and write code. It's important for these kids, right now, starting at 8 years old, to read and write code."
"Learning to code makes kids feel empowered, creative, and confident. If we want our young geenration to retain these traits into adulthood, a great option is to expose them to computer programming in their youth."
"Whether you want to uncover the secrets of the universe, or you just want to pursue a career in the 21st century, basic computer programming is an essential skill to learn."


--- layout: post title: Modern Marvels - Potato Edition date: '2011-09-02 23:41:23 -0700' mt_id: 1457 blog_id: 1 post_id: 1457 basename: modern_marvels_-_potato_edition categories: - business ---
Modern, massive-scale manufacturing is a sight to behold. When you go to a grocery store or a retailer like Wal-Mart, there's such an incredible diversity of product that it's easy to take it for granted. But then think that there's 36,148 other grocery stores just like this one or 4,400 other Wal-Marts in the United States. The scale of it is mind-boggling.
I was reminded of this recently when I listened to an episode of the podcast EconTalk where the host interviewed someone from Frito-Lay. The guest described operations at the Modesto, California factory and I couldn't tear myself away!
Images of chips whizzing by at 60 MPH while a computer scanned for defective ones flooded by consciousness. Luckily, I found some video that approximated several of the processes he discussed. What an operation to behold!


Data and Model¶
Classes to deal with input data
-
class
data_model.
Data
(x, y, yerr, mask=[])¶ Class for input data
Stores input data from user
- Parameters
x (array) – x data
y (array) – y data
yerr (array) – errors on y data
mask (array) – True where to include data, False otherwise
-
class
data_model.
Fit
(Data_object, Model_object)¶ Class to perform a fit
Fit the data with a specified model
- Parameters
Data_object (class) – a data object
Model_object (class) – a model object
-
run_fit
()¶ Run fit
Performs a fit to the data with a minimization routine, currently uses scipy curve_fit
- Returns
The best fit model popt (array): The best fit parameter values for the fitting function x_model (array): The x array of the model
- Return type
y_model (array)
-
class
data_model.
Model
(function_type, init_guess=[], poly_deg=4)¶ Class for model
Generates a model for fitting the data. Currently supports polynomials of arbitrary degreee
- Parameters
function_type (string) – type of fitting function. Options are: poly
init_guess (list) – initial guesses for fit
poly_deg (int) – degree of the polynomial
-
static
arbitrary_poly
(x, *params)¶ Make a polynomial function
Function called by minimization routine to create polynomial
- Parameters
x (array) – array of x values to compute poly model
params (array) – array of polynomial indices
- Returns
The polynomial model
-
change_degree
(new_degree)¶ Change polynomial degree
Function to change degree of the fitting polynomial
- Parameters
new_degree (int) – the specified degree of polynomial


--- layout: post tags: [AutoFixture, Azure, Software Design] date: 2011-04-05 19:52:57 UTC title: "MSDN Magazine article about CQRS on Windows Azure" --- {% include JB/setup %}
My latest MSDN Magazine article, this time about CQRS on Windows Azure, is now available at the April MSDN Magazine web site.
It's mostly meant as an introduction to CQRS as well as containing some tips and tricks that are specific to applying CQRS on Windows Azure.
As an added bonus the code sample download contains lots of idiomatic unit tests written with AutoFixture's xUnit.net extensions, so if you'd like to see the result of my TDD work with AutoFixture, there's a complete code base to look at there.
Comments
I may end up doing things with Node and Redis, but still wanting to learn how to do things with Azure.


Exodus 35:16
The altar of burnt offering, with his brazen grate, his staves, and all his vessels, the laver and his foot,


Training courses
A list of helpful guides and courses ordered around key digital skills.
Agile working
Agile delivery in GDS Service Manual (read)
Digital and agile awareness course - GDS Academy (course)
Digital and agile foundation - GDS Academy (course)
Agile for teams - GDS Academy (course)
Hands on agile for leaders - GDS Academy (course)
User focus
Updated: Janauary 2020


This package contains the main classes to run the Design Explorer tool in RapidSmith. See
Technical Report and Documentation for more information.


Displaying the complex layouts of a typical magazine, newspaper, or textbook on the web requires capabilities beyond those available in existing CSS modules. Dynamic magazine layout in particular requires flexibility in placement of boxes for content flows. This is the purpose of the CSS regions module.
The CSS regions module allows content to flow across multiple areas called regions. The regions are not necessarily contiguous in the document order. The CSS regions module provides an advanced content flow mechanism, which can be combined with positioning schemes as defined by other CSS modules such as the Multi-Column Module or the Grid Layout Module to position the regions where content flows.


Introduction¶
Our Goal¶
Walk through two examples of threading and multiprocessing to illustrate rules and best practices for taking advantage of concurrency.
Why Concurrency?¶
- Improve perceived responsiveness
- Improve speed
- Because that is how the real world works
Martelli Model of Scaleability¶
- 1 core: Single thread and single process
- 2-8 cores: Multiple threads and multiple processes
- 9+ cores: Distributed processing
Martelli’s observation: As time goes on, the second category becomes less common and relevant. Single cores become more powerful. Big datasets grow ever larger.
Global Interpreter Lock¶
CPython has a lock for its internal shared global state.
The unfortunate effect of the GIL is that no more than one thread can run at a time.
For I/O bound applications, the GIL doesn’t present much of an issue. For CPU bound applications, using threading makes the application speed worse. Accordingly, that drives us to multi-processing to gain more CPU cycles.
Threads vs Processes¶
“Your weakness is your strength and your strength is your weakness”.
The strength of threads is shared state. The weakness of threads is shared state (managing race conditions).
The strength of processes is their independence from one another. The weakness of processes is lack of communication (hence the need for IPC and object pickling and other overhead).
Threads vs Async¶
Threads¶
Threads switch preemptively. This is convenient because you don’t need to add explicit code to cause a task switch.
The cost of this convenience is that you have to assume a switch can happen at any time. Accordingly, critical sections have to be guarded with locks.
The limit on threads is total CPU power minus the cost of task switches and synchronization overhead.
Async¶
Async switches cooperatively, so you do need to add explicit code “yield” or “await” to cause a task switch.
Now you control when task switches occur, so locks and other synchronization are no longer needed.
Also, the cost task switches is very low. Calling a pure Python function has more overhead than restarting a generator or awaitable.
This means that async is very cheap.
In return, you’ll need a non-blocking version of just about everything you do. Accordingly, the async world has a huge ecosystem of support tools. This increases the learning curve.
Comparison¶
- Async maximizes CPU utilization because it has less overhead than threads.
- Threading typically works with existing code and tools as long as locks are added around critical sections.
- For complex systems, async is much easier to get right than threads with locks.
- Threads require very little tooling (locks and queues).
- Async needs a great deal of tooling (futures, event loops, and non-blocking versions of just about everything).


Production-Quality Node.js Web Apps : Part III, Preventing Defects
This is the last part of my 3-part series on production-quality node.js web applications. I’ve decided to leave error-prevention to the end, because while it’s super-important, it’s often the only strategy developers employ to ensure customers have the most defect-free experience as possible. It’s definitely worth checking out parts I and II if you’re curious about other strategies and really interested in getting significant results.
Error Prevention
With that said, let’s talk about a few error prevention tricks and tactics that I’ve found extremely valuable. There are a bunch of code conventions and practices that can help immensely, and here’s where I’ll get into those. With that said I should add that I’m not going to talk about node-fibers, or harmony-generators, or streamline.js, which all have different solutions – ultimately because I haven’t used them (which is because none of them are considered very ‘standard’ (yet)). There are people using them to solve a few of the issues I’ll talk about though.
High test coverage, extensive testing
There should be no surprise here, but I think test coverage is absolutely essential in any dynamically typed app because so many errors can only happen at runtime. If you haven’t got heavy test coverage, (even coverage itself is valuable!), you will run into all kinds of problems as the codebase gets larger and more complex, and you’ll be too scared to make sweeping changes (like change out your database abstraction, or how sessions are handled). An untested/uncovered codebase will have you constantly shipping codepaths to production that have never been actually executed before anywhere.
The simplest way I’ve found to get code coverage stats (and I’ve used multiple methods in the past) is to use istanbul. Here’s istanbul’s output on a file from one of my npm libraries:
The places marked in red are the places that my tests are not testing at all. I use this tool all the time to see what I might have missed testing-wise, when I haven’t been doing TDD, and then I try to close up the gaps.
Use a consistent error passing interface and strategy
Asynchronous code should always take a callback that expects an Error object (or null) in the first parameter (the standard node.js convention). This means:
Never create an asynchronous function that doesn’t take a callback, no matter how little you care about the result.
Never create an asynchronous function that doesn’t take an error parameter as the first parameter in its callback, even if you don’t have a reason for it immediately.
Always use an Error object for errors, and not a string, because they have very handy stacktraces.
Following these rules will make things much easier to debug later when things go wrong in production.
Of course there are some cases where you can get away with breaking these rules, but even in those cases, over time, as you use these functions more often and change their internal workings, you’ll often be glad that you followed these rules.
Use a consistent error-checking and handling strategy.
Always check the errors from a callback. If you really don’t care about an error (which should probably be rare), do something like this to make it obvious:
1 2 3 4 5 |
|
Even then, it’s probably best to log the error at the very least. It’s extremely rare that you’d bother writing code of which you don’t care about the success/failure.
In many cases you won’t be expecting an error, but you’ll want to know about it. In those cases, you can do something like this to at least get it into your logs:
1 2 3 4 5 6 |
|
You’re going to want to actually handle the unexpected error there too of course.
If you’re in some nested callback, you can just pass it up to a higher callback for that callback to handle:
1 2 3 4 5 |
|
NB: I almost always use return
when calling callbacks to end execution of the current function right there and to save myself from having to manage a bunch of if..else
scenarios. Early returns are just so much simpler in general that I rarely find myself using else
anywhere anymore. This also saves you from becoming another “can’t set headers after they are sent” casualty.
If you’re at the top of a web request and you’re dealing with an error that you didn’t expect, you should send a 500 status code, because that’s the appropriate code for errors that you didn’t write appropriate handling for.
1 2 3 4 5 6 7 |
|
In general, you should always be handling or passing up every single error that could possibly occur. This will make surfacing a particular error much easier. Heavy production use has an uncanny ability to find itself in pretty much any codepath you can write.
Watch out for error
events.
Any EventEmitters in your code (including streams) that emit an error
event absolutely need to have a listener for those error
events. Uncaught error
events will bring down your entire process, and usually end up being the main cause of process crashes in projects that I’ve worked on.
The next question will be how you handle those errors, and you’ll have to decide on a case-by-case basis. Usually you’ll at least want to 500 on those as well, and probably log the issue.
Managing Errors at Runtime
Domains
Domains are without a doubt your best tool for catching errors in runtime that you missed at development time. There are three places that I’ve used them to great effect:
- To wrap the main process. When it dies, a domain catches the error that caused it.
- To wrap cluster’s child processes. If you use cluster-master like I do, or if you use cluster.setupMaster() with a different file specified via
exec
for child processes, you’ll want the contents of the file to be wrapped in a domain as well. This means that when a child process has an uncaught error, this domain catch it. - To wrap the request and response objects of each http request. This makes it much more rare that any particular request will take down your process. I just use node-domain-middleware to do this for me (This seems like it should work in any connect-compatible server as well, despite the name).
In the case of catching an error with a domain on the main process, or a child process, you should usually just log the issue (and bump a restart metric), and let the process restart (via a process manager for the main process, or via cluster for the child process — see part I for details about this). You probably do not want to the process to carry on, because if you knew enough about this type of error to catch it, you should have caught it before it bubble up to the process level. Since this is an unexpected error, it could have unexpected consequences on the state of your application. It’s much cleaner and safer to just let the process restart.
If you’ve caught a an error from request or response object, it’s probably safe and appropriate to send a 500 status code, log the error (and stack trace) and bump a 500
metric.
Also, I’ve written a module that helps me test that my domains are correctly in place: error-monkey. You can temporarily insert error-monkey objects in different places in your codebase to ensure that domains are catching them correctly. This way, you’re not tweaking the location of your domains and waiting for errors to happen in production to verify them.
Gracefully restarting
Now that domains have given you a place to catch otherwise uncaught exceptions and you can hook in your own restart logic, you’ll want to think about gracefully restarting rather than just killing the process abruptly and dropping all outstanding requests in progress. Instead you’ll want tp restart only after all current requests have completed ( see : http://nodejs.org/api/http.html#http_server_close_callback ). This way, the process can be restarted more gracefully.
If you’re running a bunch of node processes (usually with cluster), and a number of servers (usually behind a load-balancer), it shouldn’t be that catastrophic to close one instance temporarily, as long as it’s done in a graceful manner.
Additionally, you may want to force a restart in the case that the graceful shutdown is taking an inordinate amount of time (probably due to hanging connections). The right amount of time probably has a lot to do with what types of requests you’re fulfilling, and you’ll want to think about what makes sense for your application.
With that said…
These are just my notes on what I’ve tried so far that achieved worthy results. I’d be interested to hear if anyone else has tried any other approaches for preventing, mitigating, and detecting defects.


{% extends "backend/base.html" %} {% from "layout/forms.html" import gjms_field with context %} {% from "layout/macros.html" import gjms_error with context %} {% from "layout/macros.html" import gjms_notice with context %} {% from "layout/macros.html" import gjms_success with context %} {% from "layout/macros.html" import gjms_messages with context %} {% block gjms_title %}Configuration{% endblock %} {% block gjms_site %}config{% endblock %} {% block gjms_content %} {% if config.get("gjms", "database_setup") == "False" %} {{ gjms_success("Hey there! Welcome to the Game Jam Management System!") }} {{ gjms_notice("Before we can get started, we need you to setup your database. You have the choice between SQLite, MySQL and PostgreSQL. If you want to use MySQL/Postgre, please fill out the form below. If you want to use SQLite, just hit the Save button and you're good to go.") }} {% endif %} {{ gjms_messages() }}
This is the place to change the identity of your game jam, as well as database settings.
Hover over the fields or the labels to get more information about each one.
{% endblock %}


We help you remember each word and phrase in the easiest and the most effective way.
We provide various of exercises that improve your listening, reading and writing.
When you are tested, you will perform better than if you just looked the material.
Both iOS and Android
“Excellent app to be the perfect companion on the go the study Japanese! Thank you for this amazing work! I’m French, I have the Minna No Nihongo French version and I would like to help to add the French language to your app.”
“Fantastic!”
“I really like the changes and the new features! It’s a great app though and I’m glad I found it!”