DO NOT READ THIS FILE ON GITHUB, GUIDES ARE PUBLISHED ON https://guides.rubyonrails.org.
Active Record Basics
This guide is an introduction to Active Record.
After reading this guide, you will know:
- What Object Relational Mapping and Active Record are and how they are used in Rails.
- How Active Record fits into the Model-View-Controller paradigm.
- How to use Active Record models to manipulate data stored in a relational database.
- Active Record schema naming conventions.
- The concepts of database migrations, validations, and callbacks.
What is Active Record?
Active Record is the M in MVC - the
model - which is the layer of the system responsible for representing business
data and logic. Active Record facilitates the creation and use of business
objects whose data requires persistent storage to a database. It is an
implementation of the Active Record pattern which itself is a description of an
Object
Relational Mapping system.
The Active Record Pattern
Active Record was described by Martin Fowler in his book Patterns of Enterprise Application Architecture. In Active Record, objects carry both persistent data and behavior which operates on that data. Active Record takes the opinion that ensuring data access logic as part of the object will educate users of that object on how to write to and read from the database.
Object Relational Mapping
Object Relational Mapping, commonly referred to as its abbreviation ORM, is a technique that connects the rich objects of an application to tables in a relational database management system. Using ORM, the properties and relationships of the objects in an application can be easily stored and retrieved from a database without writing SQL statements directly and with less overall database access code.
NOTE: Basic knowledge of relational database management systems (RDBMS) and structured query language (SQL) is helpful in order to fully understand Active Record. Please refer to this tutorial (or this one) or study them by other means if you would like to learn more.
Active Record as an ORM Framework
Active Record gives us several mechanisms, the most important being the ability to:
- Represent models and their data.
- Represent associations between these models.
- Represent inheritance hierarchies through related models.
- Validate models before they get persisted to the database.
- Perform database operations in an object-oriented fashion.
Convention over Configuration in Active Record
When writing applications using other programming languages or frameworks, it
may be necessary to write a lot of configuration code. This is particularly true
for ORM frameworks in general. However, if you follow the conventions adopted by
Rails
, you'll need to write very little configuration (in some cases no
configuration at all) when creating Active Record models. The idea is that if
you configure your applications in the very same way most of the time then this
should be the default way. Thus, explicit configuration would be needed
only in those cases where you can't follow the standard convention.
Naming Conventions
By default, Active Record uses some naming conventions to find out how the
mapping between models and database tables should be created. Rails
will
pluralize your class names to find the respective database table. So, for
a class Book
, you should have a database table called books. The Rails
pluralization mechanisms are very powerful, being capable of pluralizing (and
singularizing) both regular and irregular words. When using class names composed
of two or more words, the model class name should follow the Ruby conventions,
using the CamelCase form, while the table name must use the snake_case form. Examples:
- Model Class - Singular with the first letter of each word capitalized (e.g.,
BookClub
). - Database Table - Plural with underscores separating words (e.g.,
book_clubs
).
Model / Class |
Table / Schema |
|---|---|
Article |
articles |
LineItem |
line_items |
Deer |
deers |
Mouse |
mice |
Person |
people |
Schema Conventions
Active Record uses naming conventions for the columns in database tables, depending on the purpose of these columns.
- Foreign keys - These fields should be named following the pattern
singularized_table_name_id
(e.g.,item_id
,order_id
). These are the fields that Active Record will look for when you create associations between your models. - Primary keys - By default, Active Record will use an integer column named
id
as the table's primary key (bigint
for PostgreSQL and MySQL,integer
for SQLite). When using Active Record Migrations to create your tables, this column will be automatically created.
There are also some optional column names that will add additional features to Active Record instances:
created_at
- Automatically gets set to the current date and time when the record is first created.updated_at
- Automatically gets set to the current date and time whenever the record is created or updated.lock_version
- Adds optimistic locking to a model.type
- Specifies that the model uses Single Table Inheritance.(association_name)_type
- Stores the type for polymorphic associations.(table_name)_count
- Used to cache the number of belonging objects on associations. For example, acomments_count
column in anArticle
class that has many instances ofComment
will cache the number of existent comments for each article.
NOTE: While these column names are optional, they are in fact reserved by Active Record. Steer clear of reserved keywords unless you want the extra functionality. For example, type
is a reserved keyword used to designate a table using Single Table Inheritance (STI). If you are not using STI, try an analogous keyword like "context", that may still accurately describe the data you are modeling.
Creating Active Record Models
To create Active Record models, subclass the ApplicationRecord
class and you're good to go:
class Product < ApplicationRecord
end
This will create a Product
model, mapped to a products
table at the
database. By doing this you'll also have the ability to map the columns of each
row in that table with the attributes of the instances of your model. Suppose
that the products
table was created using an SQL (or one of its extensions) statement like:
CREATE TABLE products (
id int(11) NOT NULL auto_increment,
name varchar(255),
PRIMARY KEY (id)
);
The schema above declares a table with two columns: id
and name
. Each row of
this table represents a certain product with these two parameters. Thus, you
would be able to write code like the following:
p = Product.new
p.name = "Some Book"
puts p.name # "Some Book"
Overriding the Naming Conventions
What if you need to follow a different naming convention or need to use your Rails application with a legacy database? No problem, you can easily override the default conventions.
ApplicationRecord
inherits from ::ActiveRecord::Base
, which defines a
number of helpful methods. You can use the ActiveRecord::Base.table_name=
method to specify the table name that should be used:
class Product < ApplicationRecord
self.table_name = "my_products"
end
If you do so, you will have to define manually the class name that is hosting
the fixtures (my_products.yml) using the set_fixture_class
method in your test
definition:
class ProductTest < ActiveSupport::TestCase
set_fixture_class my_products: Product
fixtures :my_products
# ...
end
It's also possible to override the column that should be used as the table's
primary key using the ActiveRecord::Base.primary_key=
method:
class Product < ApplicationRecord
self.primary_key = "product_id"
end
NOTE: Active Record does not support using non-primary key columns named id
.
CRUD: Reading and Writing Data
CRUD is an acronym for the four verbs we use to operate on data: Create, Read, Update and Delete. Active Record automatically creates methods to allow an application to read and manipulate data stored within its tables.
Create
Active Record objects can be created from a hash, a block, or have their
attributes manually set after creation. The new
method will return a new
object while create
will return the object and save it to the database.
For example, given a model User
with attributes of name
and occupation
,
the create
method call will create and save a new record into the database:
user = User.create(name: "David", occupation: "Code Artist")
Using the new
method, an object can be instantiated without being saved:
user = User.new
user.name = "David"
user.occupation = "Code Artist"
A call to user.save
will commit the record to the database.
Finally, if a block is provided, both create
and new
will yield the new
object to that block for initialization:
user = User.new do |u|
u.name = "David"
u.occupation = "Code Artist"
end
Read
Active Record provides a rich API for accessing data within a database. Below are a few examples of different data access methods provided by Active Record.
# return a collection with all users
users = User.all
# return the first user
user = User.first
# return the first user named David
david = User.find_by(name: 'David')
# find all users named David who are Code Artists and sort by created_at in reverse chronological order
users = User.where(name: 'David', occupation: 'Code Artist').order(created_at: :desc)
You can learn more about querying an Active Record model in the Active Record Query Interface guide.
Update
Once an Active Record object has been retrieved, its attributes can be modified and it can be saved to the database.
user = User.find_by(name: 'David')
user.name = 'Dave'
user.save
A shorthand for this is to use a hash mapping attribute names to the desired value, like so:
user = User.find_by(name: 'David')
user.update(name: 'Dave')
This is most useful when updating several attributes at once. If, on the other
hand, you'd like to update several records in bulk, you may find the
update_all
class method useful:
User.update_all "max_login_attempts = 3, must_change_password = 'true'"
This is the same as if you wrote:
User.update(:all, max_login_attempts: 3, must_change_password: true)
Delete
Likewise, once retrieved, an Active Record object can be destroyed, which removes it from the database.
user = User.find_by(name: 'David')
user.destroy
If you'd like to delete several records in bulk, you may use destroy_by
or destroy_all
method:
# find and delete all users named David
User.destroy_by(name: 'David')
# delete all users
User.destroy_all
Validations
Active Record allows you to validate the state of a model before it gets written into the database. There are several methods that you can use to check your models and validate that an attribute value is not empty, is unique and not already in the database, follows a specific format, and many more.
Validation is a very important issue to consider when persisting to the database, so
the methods save
and update
take it into account when
running: they return false
when validation fails and they don't actually
perform any operations on the database. All of these have a bang counterpart (that
is, save!
and update!
), which are stricter in that
they raise the exception ::ActiveRecord::RecordInvalid
if validation fails.
A quick example to illustrate:
class User < ApplicationRecord
validates :name, presence: true
end
irb> user = User.new
irb> user.save
=> false
irb> user.save!
ActiveRecord::RecordInvalid: Validation failed: Name can't be blank
You can learn more about validations in the Active Record Validations guide.
Callbacks
Active Record callbacks allow you to attach code to certain events in the life-cycle of your models. This enables you to add behavior to your models by transparently executing code when those events occur, like when you create a new record, update it, destroy it, and so on. You can learn more about callbacks in the Active Record Callbacks guide.
Migrations
Rails provides a domain-specific language for managing a database schema called
migrations. Migrations are stored in files which are executed against any
database that Active Record supports using rake
. Here's a migration that
creates a table:
class CreatePublications < ActiveRecord::Migration[7.0]
def change
create_table :publications do |t|
t.string :title
t.text :description
t.references :publication_type
t.references :publisher, polymorphic: true
t.boolean :single_issue
t.
end
end
end
Rails keeps track of which files have been committed to the database and
provides rollback features. To actually create the table, you'd run bin/rails db:migrate
,
and to roll it back, bin/rails db:rollback
.
Note that the above code is database-agnostic: it will run in MySQL, PostgreSQL, Oracle, and others. You can learn more about migrations in the Active Record Migrations guide.


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Before Change
//: inverse -> Formulation II;
//: true level-> Formulation III (default);
//: true location -> Formulation IV.
steer = Trait("true level", "true location", "classic", "inverse",
desc="Type of steering vectors used. Corresponds to the formulations"
"in :ref:`Sarradj, 2012<Sarradj2012>`. classic -> Formulation I;"
"inverse -> Formulation II; true level-> Formulation III;"
"true location -> Formulation IV")
//: Boolean flag, if "True" (default), the result is cached in h5 files.
cached = Bool(True,
desc="cached flag")
After Change
steer = Property(desc="type of steering vectors used")
// Dummy property for Backward compatibility. See :attr:`~acoular.fbeamform.SteeringVector.env` for information.
env = Property()
// Dummy property for Backward compatibility. See :attr:`~acoular.fbeamform.SteeringVector.grid` for information.
grid = Property(desc="beamforming grid")


| blowflies {pomp} | R Documentation |
blowflies
is a data frame containing the data from several of Nicholson's classic experiments with the Australian sheep blowfly, Lucilia cuprina.
blowflies1(
P = 3.2838,
delta = 0.16073,
N0 = 679.94,
sigma.P = 1.3512,
sigma.d = 0.74677,
sigma.y = 0.026649
)
blowflies2(
P = 2.7319,
delta = 0.17377,
N0 = 800.31,
sigma.P = 1.442,
sigma.d = 0.76033,
sigma.y = 0.010846
)
P |
reproduction parameter |
delta |
death rate |
N0 |
population scale factor |
sigma.P |
intensity of |
sigma.d |
intensity of |
sigma.y |
measurement error s.d. |
blowflies1()
and blowflies2()
construct ‘pomp’ objects encoding stochastic delay-difference equation models.
The data for these come from "population I", a control culture.
The experiment is described on pp. 163–4 of Nicholson (1957).
Unlimited quantities of larval food were provided;
the adult food supply (ground liver) was constant at 0.4g per day.
The data were taken from the table provided by Brillinger et al. (1980).
The models are discrete delay equations:
R(t+1) \sim \mathrm{Poisson}(P N(t-\tau) \exp{(-N(t-\tau)/N_{0})} e(t+1) {\Delta}t)
S(t+1) \sim \mathrm{Binomial}(N(t),\exp{(-\delta \epsilon(t+1) {\Delta}t)})
N(t) = R(t)+S(t)
where e(t)
and \epsilon(t)
are Gamma-distributed i.i.d. random variables
with mean 1 and variances {\sigma_P^2}/{{\Delta}t}
, {\sigma_d^2}/{{\Delta}t}
, respectively.
blowflies1
has a timestep ({\Delta}t
) of 1 day; blowflies2
has a timestep of 2 days.
The process model in blowflies1
thus corresponds exactly to that studied by Wood (2010).
The measurement model in both cases is taken to be
y(t) \sim \mathrm{NegBin}(N(t),1/\sigma_y^2)
i.e., the observations are assumed to be negative-binomially distributed with
mean N(t)
and variance N(t)+(\sigma_y N(t))^2
.
Default parameter values are the MLEs as estimated by Ionides (2011).
blowflies1
and blowflies2
return ‘pomp’ objects containing the actual data and two variants of the model.
A.J. Nicholson. The self-adjustment of populations to change. Cold Spring Harbor Symposia on Quantitative Biology 22, 153–173, 1957.
Y. Xia and H. Tong. Feature matching in time series modeling. Statistical Science 26, 21–46, 2011.
E.L. Ionides. Discussion of “Feature matching in time series modeling” by Y. Xia and H. Tong. Statistical Science 26, 49–52, 2011.
S. N. Wood Statistical inference for noisy nonlinear ecological dynamic systems. Nature 466, 1102–1104, 2010.
W.S.C. Gurney, S.P. Blythe, and R.M. Nisbet. Nicholson's blowflies revisited. Nature 287, 17–21, 1980.
D.R. Brillinger, J. Guckenheimer, P. Guttorp, and G. Oster. Empirical modelling of population time series: The case of age and density dependent rates. In: G. Oster (ed.), Some Questions in Mathematical Biology vol. 13, pp. 65–90, American Mathematical Society, Providence, 1980.
More examples provided with pomp:
childhood_disease_data
,
compartmental_models
,
dacca()
,
ebola
,
gompertz()
,
ou2()
,
pomp_examples
,
ricker()
,
rw2()
,
verhulst()
More data sets provided with pomp:
bsflu
,
childhood_disease_data
,
dacca()
,
ebola
,
parus
plot(blowflies1())
plot(blowflies2())


To be a Corrector, please provide the following:
Note: To make a correction during the meeting, simply select the text. An edit box will open. Make your edit and then hit ENTER. Be sure to hit ENTER or your edit will be lost.
You can click on a word to select it. To select multiple words select FROM THE MIDDLE of the start word to the MIDDLE of the last word.


Geometry optimization¶
In this section the geometry optimization are described. In general the derivative of the Gaussian basisset functions is given as:
\[\frac{\partial\phi_{l,m,n}}{\partial X_{A}}=\left[\left(2l+1\right)a\right]^{1/2}\phi_{l+1,m,n}-2l\left(\frac{a}{2l-1}\right)^{1/2}\phi_{l-1,m,n}\]
Gradient Descent¶
The molecular structure is propagated using the Gradient Descent method:
\[X_{A,i+1}=X_{A,i}-\zeta\frac{\partial E_{\mathrm{HF}}}{\partial X_{A}}\]
FUNCTION:
- None
References:
- None
Analytic Hartree-Fock¶
The analytic Hartree-Fock derivative is given as:
\[\frac{\partial E_{\mathrm{HF}}}{\partial X_{A}}=\sum_{i,j}D_{i,j}\frac{H_{i,j}^{\mathrm{core}}}{\partial X_{A}}+\frac{1}{2}\sum_{i,j,k,l}D_{j,i}D_{k,l}\frac{\partial\left(ij\left|\right|kl\right)}{\partial X_{A}}-2\sum_{i,j}\sum_{a}^{\mathrm{occ}}\varepsilon_{a}C_{j,a}C_{i,a}\frac{\partial S_{i,j}}{\partial X_{A}}+\frac{\partial V_{NN}}{\partial X_{A}}\]
FUNCTION:
- GeometryOptimization.run_analytic(input, set, results)
Input:
- input, inputfile object
- set, settingsfile object
- results, results object
Output:
- input, inputfile object with opdated coordinates
References:
- Szabo and Ostlund, Modern Quantum Chemistry: Introduction to Advanced Electronic Structure Theory
Finite difference¶
The numerical gradient is calculated by the use of finite difference, and is found as:
\[\frac{\partial E_{\mathrm{HF}}}{\partial X_{A}}=\frac{E_{\mathrm{HF}}\left(X_{A}+\epsilon\right)-E_{\mathrm{HF}}\left(X_{A}-\epsilon\right)}{2\epsilon}\]
FUNCTION:
- GeometryOptimization.run_numeric(input, set, results)
- return input
Input:
- input, inputfile object
- set, settingsfile object
- results, results object
Output:
- input, inputfile object with opdated coordinates
References:
- None


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Situated along the beautiful shores of Lake Roosevelt with sweeping views of the water and the awe inspiring historical Whitestone Rock, Whitestone Winery has the most spectacular location for a vineyard and winery in the state of Washington.
Relax and enjoy the view along with Whitestone's national award winning wines in our newest tasting room, The Yurt. Here you will find our amazing signiture menu items and catch the latest sporting event on the big screen t.v.'s
Behind the tasting room is The Green, where you can enjoy live music with the cliffs of Lake Roosevelt as the backdrop. Settle into an adirondak chair or spead out on a blanket and soak up the sunshine and fresh air.
Next door to the tasting room you will find Whitestone's production and barelling facility. This building is used to house all of Whitestone's production, from fermenting to bottling of future vintages of Whitestone Wine.
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Welcome! I'm a senior data scientist at Netflix. I like to build systems that improve decision-making. Tools I regularly use for this purpose include Bayesian statistics, causal inference, and computational methods in R and Python. Before coming to Netflix I was a research scientist at Facebook, and before that I got my PhD from Stanford while consulting for UNICEF. This page has a collection of resources primarily compiled during my PhD, but I sometimes update it with new papers and tutorials. Feel free to connect on LinkedIn.
Global, Regional, and National Levels and Trends in Under-5 Mortality Between 1990 and 2015, with Scenario-based Projection to 2030 (with Danzhen You, Lucia Hug, Priscila Idele, Daniel Hogan, Patrick Gerland, Jin Rou New, and Leontine Alkema). The Lancet 2015.
Abstract. In 2000, world leaders agreed on the Millennium Development Goals (MDGs). MDG 4 called for a two-thirds reduction in the under-5 mortality rate between 1990 and 2015. We aimed to estimate levels and trends in under-5 mortality for 195 countries from 1990 to 2015 to assess MDG 4 achievement and then intended to project how various post-2015 targets and observed rates of change will affect the burden of under-5 deaths from 2016 to 2030.
Segregation, Ethnic Favoritism, and the Strategic Targeting of Local Public Goods (with Eric Kramon and Amanda Lea Robinson). Comparative Political Studies 2017.
Abstract. This article demonstrates that ethnic segregation is a key determinant of public goods provision. We argue that this results from politicians' strategic engagement in ethnic favoritism: only when ethnic groups are sufficiently segregated can elites efficiently target their coethnics with local public goods. We test this expectation with fine-grained data from Malawi on the spatial distribution of ethnic groups, geolocated distributive goods (public and private), and the ethnic identities of political elites. We find that members of parliament provide more local public goods to their constituencies when ethnic groups are geographically segregated, but that this increased investment is primarily targeted toward coethnics. Thus, while segregation promotes overall public goods provision, it also leads to greater favoritism in the distribution of these goods. Our logic and evidence provide an elite-driven explanation for the considerable variation in ethnic favoritism and the under-provision of public goods in ethnically diverse settings.
Do Elections Improve Constituency Responsiveness? Evidence from U.S. Cities (with Darin Christensen). Political Science Research and Methods 2018.
Abstract. Do elections motivate incumbent politicians to serve their voters? In this paper, we use millions of service requests placed by residents in US cities to measure constituency responsiveness. We then test whether an unusual policy change in New York City, which enabled city councilors to run for three rather than two terms in office, improved constituency responsiveness in previously term-limited councilors’ districts. Using difference-in-differences, we find robust evidence for this. Taking advantage of differential timing of local election races in New York City and San Francisco, we also find late-term improvements to responsiveness in districts represented by reelection-seeking incumbents. Elections improve municipal services, but also create cycles in constituency responsiveness. These findings have implications for theories of representative democracy.
Since 2004 over 15 million service requests have been filed by residents in NYC. The government responds quicker in some neighborhoods than in others...
On average, humanity's demand on biocapacity exceeds the world's natural capacity by 50%. Put differently, 1.5 planet Earths would be required...
While child mortality in general is lower in high-income countries, many low-income countries did a remarkable job of reducing it between 1990 and 2015...
Despite significant progress in reducing child mortality over the last 25 years, 43 out of every 1000 children died before their fifth birthday in 2015....


Make bigger vertically
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test
test
test
test
test
test
test
test
test
test
test


module ActiveRecord::Locking::Optimistic
What is Optimistic Locking¶ ↑
Optimistic locking allows multiple users to
access the same record for edits, and assumes a minimum of conflicts with
the data. It does this by checking whether another process has made changes
to a record since it was opened, an
ActiveRecord::StaleObjectError
exception is thrown if that has
occurred and the update is ignored.
Check out ActiveRecord::Locking::Pessimistic
for an
alternative.
Usage¶ ↑
Active Records support optimistic locking if the field
lock_version
is present. Each update to the record increments
the lock_version
column and the locking facilities ensure that
records instantiated twice will let the last one saved raise a
StaleObjectError
if the first was also updated. Example:
p1 = Person.find(1) p2 = Person.find(1) p1.first_name = "Michael" p1.save p2.first_name = "should fail" p2.save # Raises a ActiveRecord::StaleObjectError
Optimistic locking will also check for stale data when objects are destroyed. Example:
p1 = Person.find(1) p2 = Person.find(1) p1.first_name = "Michael" p1.save p2.destroy # Raises a ActiveRecord::StaleObjectError
You're then responsible for dealing with the conflict by rescuing the exception and either rolling back, merging, or otherwise apply the business logic needed to resolve the conflict.
This locking mechanism will function inside a single Ruby process. To make
it work across all web requests, the recommended approach is to add
lock_version
as a hidden field to your form.
This behavior can be turned off by setting
ActiveRecord::Base.lock_optimistically = false
. To override
the name of the lock_version
column, set the
locking_column
class attribute:
class Person < ActiveRecord::Base self.locking_column = :lock_person end
Private Instance Methods
# File lib/active_record/locking/optimistic.rb, line 114 def destroy_row affected_rows = super if locking_enabled? && affected_rows != 1 raise ActiveRecord::StaleObjectError.new(self, "destroy") end affected_rows end
# File lib/active_record/locking/optimistic.rb, line 63 def increment_lock lock_col = self.class.locking_column previous_lock_value = send(lock_col).to_i send(lock_col + '=', previous_lock_value + 1) end
# File lib/active_record/locking/optimistic.rb, line 124 def relation_for_destroy relation = super if locking_enabled? column_name = self.class.locking_column column = self.class.columns_hash[column_name] substitute = self.class.connection.substitute_at(column) relation = relation.where(self.class.arel_table[column_name].eq(substitute)) relation.bind_values << [column, self[column_name].to_i] end relation end


Search
Preparing search index...


In the group formation simulation, potential new breeding groups are formed from the list of candidate animals based on the genetic value of thoese candidates, and within-group relationships that must be avoided. If no candidate IDs are specified above or in the input pedigree, all population members will be used.
Please see the README tab for a full description of this process.
The algorithm ignores between-animal kinship that is:
| Relationship Category | Kinship (θ) |
|---|---|
| Monozygotic Twins | 0.5 |
| Parent-Offspring | 0.25 |
| Full Siblings | 0.25 |
| Half Siblings/Grandparent-Grandchild | 0.125 |
| Uncle-Nephew | 0.125 |
| Double First Cousins | 0.125 |
| First Cousins | 0.0625 |
| Second Cousins | 0.015625 |
| Unrelated | 0 |


A PAKHTUN MEMORY
28 December 2011 / Shirin Jinnah Colony, Karachi
“This is not a place to celebrate happiness.”
(Police to crowd in Shirin Jinnah Colony, Karachi)
In this urban choreography, the Tentative Collective hired a band to play a specific rural Pakhtun folk tune in a dense urban setting populated by Pakhtun migrants. The tune was representative of a tradition of music played at harvests and weddings in hilly Pakhtun villages. It was performed on an abandoned roundabout in the city near a migrant colony of Pakhtuns relocated to Karachi for work (or by the War on Terror). By re-situating a communal musical performance; belonging and the performativity of bodies in public space was explored, projections of homogenous Pakhtun culture were challenged and the layered nature of public spaces by class, ethnicity and security were revealed. We were left with questions about the boundaries of (our own) privilege, class and subversion.
Winner of the juror’s prize award at the Mohawk Hudson Regional Exhibition, University Art Museum, UAlbany. 2012. Selected for screening at the Syracuse International Film Festival 2012, CityPossible Film Festival III, Asia Research Institute NUS Singapore 2014, Karachi Conference Film Festival 2014 and Digital Marrakech Festival 4th edition Arab Media Lab Foundation 2014. Semi-finalist for Institute for Public Art’s 2nd International Award for Public Art 2015.


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--- layout: archive title: Zulip Chat Archive permalink: /stream/113488-general/topic/Fields.20medals.html ---
Who wants to bet on Fields medals that will be awarded tomorrow? I mean the other Fields medals, not Scholze's.
oh, we don't know yet?
I don't know
Do you know?
is there any way it can be viewed in Hong Kong?
e.g. can I view it online?
and when is it?
It's 2018, I do hope this will be live on Youtube
it isn't like the world cup is live on youtube
https://www.youtube.com/channel/UCnMLdlOoLICBNcEzjMLOc7w looks promising
There is no money to make here, it's not soccer
do you know when is it?
http://www.icm2018.org/portal/en/program-at-a-glance (you want to see the opening ceremony)
https://www.google.fr/search?q=what+time+is+it+in+rio
"opening ceremony" is quite a cryptic name
People can't wait
There is no money to make here, it's not soccer
I'm pretty sure I heard at least one monetary bet being discussed at ICMS
I guess it wasn't much money
Do you remember what was the bet?
For proof assistants, the most favorable winner would be Viazovska.
Other names I've heard mentioned are Geordie Williamson and Ciprian Manolescu.
Oh sure, those are serious contenders. I even understand a bit about what Ciprian is doing. We could at least formalize the statement of his triangulation stuff.
I would guess Scholze, Birkar, Viazovska, and I have no guess for #4. We will know in a couple of hours!
no livestream?
Perhaps <https://www.youtube.com/watch?v=Webvi7vxUCk>?
oh nice
I am watching a still image together with 532 other people.
Is the picture moving, over at your side?
nee
What a resounding technological success!
heeft het gebeginnd?
No, it didn't start yet.
I'm one of the 680 optimists who hope it will start soon...
679 of those might have it on in the background while doing other things...
Sorry for my late reply... I was trying to get a tex-file to compile. But yes, that's a brilliant strategy.
@Kenny Lau You know Portuguese.
Something happened!!!!!
The image is moving.
Alas, there is no mathematics yet...
now!
they really need to fix their audio
There's been a photo up on facebook for about 45m. :-)
Someone snuck down to the front row.
My two hoped-fors weren't there. :-(
Kashiwara got the Chern medal. So then no Fields medal for Williamson.
I think I didn't hear the first one due to audio quality
Audio is horrible.
Ali Nesin
Neither Williamson nor Manolescu :-(
Here we go...
Fields medals now
Caucher Birkar
https://en.wikipedia.org/wiki/Caucher_Birkar
https://en.wikipedia.org/wiki/Fields_Medal also lists another name
Alessio Figalli
https://en.wikipedia.org/wiki/Alessio_Figalli
Peter Scholze
Akshay Venkatesh
Anyway, I got 2 out of 4 correct! Where do I collect my cash?
https://www.youtube.com/watch?v=B0OOw84PZ_E is pretty nice to watch
I'm very happy Alessio got it. We worked in the same corridor for one year. I was during my PhD, and it was the whole length of his PhD...
https://www.theguardian.com/world/2018/aug/01/fields-medal-award-stolen-brazil-maths-prize
what a turn of events
Schapira will give (or has given?) the laudatio for Kashiwara, this may be fun. It will make up a bit for the fact that Fontaine is not giving the laudatio for Scholze.
{% endraw %}Last updated: Apr 24 2020 at 19:02 UTC


Vodafone Offering Free AirPods if You Buy an iPhone And Unlimited Plan
by Charlotte HenryLONDON – If you get a new iPhone 11 or iPhone XS and an unlimited plan from Vodafone, you will also get a new pair of AirPods. The cell provider announced the deal on Wednesday.
AirPods on Unlimited Plan…For a Limited Time
Vodafone said that anyone who purchases a Phone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone XS or iPhone XS Max on an Unlimited plan, will receive a pair of the wireless headphones. However, the offer is only running from November 20th to December 3rd. The AirPods will be delivered within 30 days of the purchase. Customers signing on in that period will, therefore, save £159, the cost of the device in the UK.


{% extends 'base.html' %} {% import 'bootstrap/wtf.html' as wtf %} {%block content%}
{{pitch.posted.strftime("%b %d %Y %H:%M")}}
{{pitch.pitch_body}}.
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Te Houtaewa & Kumara
HTML & CSS
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Problem Solving
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Welcome to the Town of Cortlandt Official site. . Click for Cortlandt Manor, NY Forecast . Shop Cortlandt Channel 78/35 GIS Maps Updates by e-mail Historic .
http://www.townofcortlandt.com/NYC - Van Cortlandt Manor in Croton, NY - Day Trip & Photos
An online page covering a trip to Van Courtlandt Manor in Historic Hudson . For other methods of travel, be sure to visit the official site for additional details.
http://www.newyorkled.com/Beyond-Van-Cortlandt-Manor.htmVan Cortlandt Manor - the Hudson River Valley National Heritage Area
www.hudsonvalley.org/historic-sites/van-cortlandt-manor . The house remained in the Van Cortlandt family until 1945 and was purchased in 1953 by John D.
http://www.hudsonrivervalley.com/Details.aspx?sid=c46f8358-5f8f-447d-b5aa-c76605245023
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08/17/2009 18:07:33 ¶ ● Academic Programmers - A Spotter's Guide I think I’ve worked with (or been) all of these at some point or another.


Vistra ITCL sells over 6.2cr shares of CG Power for Rs 87.45cr
According to bulk deal data available with the BSE, Jhunjhunwala purchased 1,29,50,000 shares of the private lender, amounting to a 0.5 percent stake in Yes Bank.
by PTIIn a separate transaction on the bourse, Vistra ITCL India Ltd sold over 6.2 crore shares of CG Power and Industrial Solutions Ltd at Rs 13.97 apiece, valuing the deal at Rs 87.45 crore.
According to the shareholding data of the September quarter, Vistra is a public shareholder of CG Power and held 10.89 percent stake or over 6.82 crore shares in the firm.
After the transaction, Vistra is left with a little over 56 lakh shares of the private lender.
The shares sold by Vistra were picked up by L&T Finance Ltd at the same price, the bulk deal data showed.
On the BSE, shares of CG Power and Industrial Solutions gained 4.94 percent to Rs 14.65 apiece.Special Thursday Expiry on 10th 7th Nov
Early Closure to The Great Diwali Discount. Last Chance to get Moneycontrol PRO for a year @ Rs. 289/- only
Coupon code: DIWALI


{% extends "bootstrap_layout.html" %} {% set active_page = "new_tweets" %} {% block content %}
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Hull Makerspace Maketober October 1st
JavaScript Physics
My first ever JavaScript program using a physics engine.
Based on a demo of the Matter.js engine
Rob Miles


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Fortnite: Where to find E.G.O. Outposts
Source: Android Central
With a brand new season of Fortnite comes brand new challenges, and Chapter 2 has once again changed up the way players will be taking them on. For the recent The Lowdown set of missions, one of the challenges for this week will have you searching for chests at E.G.O. Outposts located throughout the game. New to the world of Fortnite, E.G.O. outposts essentially operate to house vehicles or items to pick up. Past challenges have involved fighting enemies here, so it's likely you'll know where to go, but if you're unsure of where to go, we've got you covered.
Knowing the challenge
First and foremost, this challenge won't be live until Thursday, Nov. 7, at 9:30 a.m. EST. After that time, you'll be able to jump in and tackle it, but just know that it won't be live until the weekly missions go live in Fortnite.
You'll only be able to do this challenge once you've completed one of the The Lowdown missions, which shouldn't be too hard at all. After finding the outpost, simply start searching through any chests you might find near the area. Finally, make sure to refer to the map below for their locations if you get stuck.
Where to Where to find Boat Launch, Coral Cove & Flipper Pond in Fortnite
- Jump into any mode of Fortnite's Battle Royale. I'd suggest Solo, as it's the best for challenges like these.
- The E.G.O. outposts are spread out throughout the map, so there is no optimal path to follow here.
- Check the map below for where all of the jigsaw pieces are located.
- You only need to search seven chests, so make sure you're keeping track and quickly leave once you stop seeing chests. Source: @FNBRHQ on Twitter
Once you finish up, you'll be all done with that challenge, and can either get started on some of the other missions for this week or finish up the match you're in.
If you're looking for more challenges to do, you can always check out the full list of The Lowdown Missions to see what you've missed, still need to complete, or head back to the main menu to prepare for the next challenge. There are tons to do this week, so you'll be busy exploring Fortnite Chapter 2 for some time!


12
JUN
Which is worse, that everyone has his price, or that the price is always so low.
16
JUN
I'm killing time while I wait for life to shower me with meaning and happiness.
20
JUN
The only skills I have the patience to learn are those that have no real application in life.


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Setting Up Keystores For ActiveMQ
Since ActiveMQ runs on the JVM, configuring it to use TLS encryption/authentication requires a pair of Java keystores; it can’t just use the normal PEM format certificates and keys used by Puppet and MCollective.
Java keystores require some non-obvious steps to set up, so this guide provides full instructions, including both a manual method and a Puppet method.
Step 0: Obtain Certificates and Keys
ActiveMQ needs the following credentials:
- A copy of the site’s CA certificate
- A certificate signed by the site’s CA
- A private key to match its certificate
These can come from anywhere, but the CA has to match the one used by MCollective.
The easiest approach is to re-use your site’s Puppet cert infrastructure, since it’s already everywhere and has tools for issuing and signing arbitrary certificates.
As ever, remember to protect the private key.
Option A: Re-Use the Node’s Puppet Agent Certificate
On your ActiveMQ server:
- Locate the ssldir by running
sudo puppet agent --configprint ssldir
. - Copy the following files to your working directory, making sure to give unique names to the cert and private key:
<ssldir>/certs/ca.pem
<ssldir>/certs/<node name>.pem
<ssldir>/private_keys/<node name>.pem
Option B: Get a New Certificate from the Puppet CA
On your CA puppet master:
- Run
sudo puppet cert generate activemq.example.com
, substituting some name for your ActiveMQ server. Unlike with a puppet master, the cert’s common name can be anything; it doesn’t have to be the node’s hostname or FQDN. - Locate the ssldir by running
sudo puppet master --configprint ssldir
. - Retrieve the following files and copy them to a working directory on your ActiveMQ server, making sure to give unique names to the cert and private key:
<ssldir>/certs/ca.pem
<ssldir>/certs/activemq.example.com.pem
<ssldir>/private_keys/activemq.example.com.pem
Option C: Do Whatever You Want
If you have some other CA infrastructure, you can use that instead.
You can now:
Manually Creating Keystores
We need a “truststore” and a “keystore.” We also need a password for each. (You can use the same password for both stores.)
Remember the password(s) for later, because it needs to go in the activemq.xml file.
Step 1: Truststore
Note: The truststore is only required for CA-verified TLS. If you are using anonymous TLS, you may skip it.
The truststore determines which certificates are allowed to connect to ActiveMQ. If you import a CA cert into it, ActiveMQ will trust any certificate signed by that CA.
You could also not import a CA, and instead import every individual certificate you want to allow. If you do that, you’re on your own, but the commands should be similar.
In the working directory with your PEM-format credentials, run the following command. Replace ca.pem
with whatever you named your copy of the CA cert, and use the password when requested.
$ sudo keytool -import -alias "My CA" -file ca.pem -keystore truststore.jks
Enter keystore password:
Re-enter new password:
.
.
.
Trust this certificate? [no]: y
Certificate was added to keystore
The truststore is now done.
If you want, you can compare fingerprints:
$ sudo keytool -list -keystore truststore.jks
Enter keystore password:
Keystore type: JKS
Keystore provider: SUN
Your keystore contains 1 entry
my ca, Mar 30, 2012, trustedCertEntry,
Certificate fingerprint (MD5): 99:D3:28:6B:37:13:7A:A2:B8:73:75:4A:31:78:0B:68
$ sudo openssl x509 -in ca.pem -fingerprint -md5
MD5 Fingerprint=99:D3:28:6B:37:13:7A:A2:B8:73:75:4A:31:78:0B:68
Step 2: Keystore
The keystore contains the ActiveMQ broker’s certificate and private key, which it uses to identify itself to the applications that connect to it.
In the working directory with your PEM-format credentials, run the following commands. Substitute the names of your key and certificate files where necessary, and the common name of your ActiveMQ server’s certificate for activemq.example.com
.
These commands use both an “export/source” password and a “destination” password. The export/source password is never used again after this series of commands.
$ sudo cat activemq_private.pem activemq_cert.pem > temp.pem
$ sudo openssl pkcs12 -export -in temp.pem -out activemq.p12 -name activemq.example.com
Enter Export Password:
Verifying - Enter Export Password:
$sudo keytool -importkeystore -destkeystore keystore.jks -srckeystore activemq.p12 -srcstoretype PKCS12 -alias activemq.example.com
Enter destination keystore password:
Re-enter new password:
Enter source keystore password:
The keystore is now done.
 Make sure they are owned by the ActiveMQ user and unreadable to any other users. Configure ActiveMQ to use them in its sslContext
. Double-check that you’ve made activemq.xml world-unreadable, since it now contains sensitive credentials.
Creating Keystores with Puppet
If you’re managing your ActiveMQ server with Puppet anyway, you can use the puppetlabs/java_ks module to handle the format conversion.
This approach is more work for a single permanent ActiveMQ server, but less work if you intend to deploy multiple ActiveMQ servers or eventually change the credentials.
Step 1: Install the java_ks
Module
On your puppet master, run sudo puppet module install puppetlabs/java_ks
.
Step 2: Create a Puppet Class
The class to manage the keystores should do the following:
- Make sure the PEM cert and key files are present and protected.
- Declare a pair of
java_ks
resources. - Manage the mode and ownership of the keystore files.
The code below is an example, but it will work fine if you put it in a module (example file location in the first comment) and set its parameters when you declare it. The name of the class (and its home module) can be changed as needed.
# /etc/puppet/modules/activemq/manifests/keystores.pp
class activemq::keystores (
$keystore_password, # required
# User must put these files in the module, or provide other URLs
$ca = 'puppet:///modules/activemq/ca.pem',
$cert = 'puppet:///modules/activemq/cert.pem',
$private_key = 'puppet:///modules/activemq/private_key.pem',
$activemq_confdir = '/etc/activemq',
$activemq_user = 'activemq',
) {
# ----- Restart ActiveMQ if the SSL credentials ever change -----
# ----- Uncomment if you are fully managing ActiveMQ with Puppet. -----
# Package['activemq'] -> Class[$title]
# Java_ks['activemq_cert:keystore'] ~> Service['activemq']
# Java_ks['activemq_ca:truststore'] ~> Service['activemq']
# ----- Manage PEM files -----
File {
owner => root,
group => root,
mode => 0600,
}
file {"${activemq_confdir}/ssl_credentials":
ensure => directory,
mode => 0700,
}
file {"${activemq_confdir}/ssl_credentials/activemq_certificate.pem":
ensure => file,
source => $cert,
}
file {"${activemq_confdir}/ssl_credentials/activemq_private.pem":
ensure => file,
source => $private_key,
}
file {"${activemq_confdir}/ssl_credentials/ca.pem":
ensure => file,
source => $ca,
}
# ----- Manage Keystore Contents -----
# Each keystore should have a dependency on the PEM files it relies on.
# Truststore with copy of CA cert
java_ks { 'activemq_ca:truststore':
ensure => latest,
certificate => "${activemq_confdir}/ssl_credentials/ca.pem",
target => "${activemq_confdir}/truststore.jks",
password => $keystore_password,
trustcacerts => true,
require => File["${activemq_confdir}/ssl_credentials/ca.pem"],
}
# Keystore with ActiveMQ cert and private key
java_ks { 'activemq_cert:keystore':
ensure => latest,
certificate => "${activemq_confdir}/ssl_credentials/activemq_certificate.pem",
private_key => "${activemq_confdir}/ssl_credentials/activemq_private.pem",
target => "${activemq_confdir}/keystore.jks",
password => $keystore_password,
require => [
File["${activemq_confdir}/ssl_credentials/activemq_private.pem"],
File["${activemq_confdir}/ssl_credentials/activemq_certificate.pem"]
],
}
# ----- Manage Keystore Files -----
# Permissions only.
# No ensure, source, or content.
file {"${activemq_confdir}/keystore.jks":
owner => $activemq_user,
group => $activemq_user,
mode => 0600,
require => Java_ks['activemq_cert:keystore'],
}
file {"${activemq_confdir}/truststore.jks":
owner => $activemq_user,
group => $activemq_user,
mode => 0600,
require => Java_ks['activemq_ca:truststore'],
}
}
Step 3: Assign the Class to the ActiveMQ Server
…using your standard Puppet site tools.
Step 4: Finish
Configure ActiveMQ to use the keystores in its sslContext
, probably with the Puppet template you’re using to manage activemq.xml. Double-check that you’ve made activemq.xml world-unreadable, since it now contains sensitive credentials.


I'm not a very smart IRC bot.
My implementation is available on GitHub
I'm a HTTP-IRC gateway, to help the code communicate with its team owner.
You can currently find me as {{.Nick}} on the current channels of {{.IrcAddress}}:
Here is how to make me send a message to a channel:
# network address in this example is guessed from http-address command line argument: {{.HttpAddress}} curl -XPOST {{.Url}}/post/ops -d "msg=INFO: Hello World, people of channel Ops" -or- # entire payload is the message, just make sure Content-Type is not multipart or urlencoded curl -XPOST {{.Url}}/post/chatter -H 'Content-Type:' -d "INFO: Awesomeness level 5"


Data for {{Geography}} submitted via Blue Community Assessment App
Blue Community Assessment
{{About Section}}
{{Geography}}
|
Cover |
{{Cover}} |
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About this Section |
{{About this Section}} |
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60. What is the total energy consumption in kilowatt hours (kWh) from all sources? |
{{60. What is the total energy consumption in kilowatt hours (kWh) from all sources?}} |
|
60a. 🔢 |
{{60a. 🔢}} |
|
60b 🔗Source |
{{60b 🔗Source}} |
|
GSTC Reference |
|
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61. How much energy in kWh is generated from renewable resources in the community? |
{{61. How much energy in kWh is generated from renewable resources in the community?}} |
|
61a. 🔢 |
{{61a. 🔢}} |
|
61b. 🔗Source |
{{61b. 🔗Source}} |
|
GSTC Reference |
|
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62. What is the total annual amount of GHG emissions generated in your community per year? |
{{62. What is the total annual amount of GHG emissions generated in your community per year?}} |
|
62a. 🔢 |
{{62a. 🔢}} |
|
62b. 🔗Source |
{{62b. 🔗Source}} |
|
GSTC Reference |
|
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63. Reference Images for this Section |
{{63. Reference Images for this Section}} |
|
63a. 📸 |
{{63a. 📸}} |
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63b. 📸 |
{{63b. 📸}} |
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63c. 📸 |
{{63c. 📸}} |
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Last Edited |
{{Last Edited}} |
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Last Edited By |
{{Last Edited By}} |
|
Notes for Stakeholders |
{{Notes for Stakeholders}} |


Article
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Catch the star that holds your destiny, the one that forever twinkles within your heart.  Always believe that your ultimate goal is attainable as long as you commit yourself to it......
Most people need to hear those "three little words" I love you. Once in a while, they hear them just in time......
An elderly carpenter was ready to retire.  He would miss the paycheck each week ,but he wanted to retire......


DURING YOUR SAFAR
No suffer (India) Ltd. (NSF) is an integrated travel and travel related service company in the country offering a broad spectrum of services that include Foreign Exchange, Corporate Travel, Tourist sights, Leisure Travel, Insurance, Visa & Passport services and Transportation. We believe that travelling should never be considered a privilege or a luxury and we here at NSF try our best to provide you the best experience and the best services that you need for your travel plans in the most affordable and in the most efficient way possible.


Analyzing the data of stock market and providing recommendations to fund managers about selling and buying certain equity investment.Besides, studying company's annual financial earning result.
Performed quality check, including verification of duplicate payments and unit prices while scrubbing thousands of daily transactions.Constantly reach out to our vendors to make sure we are receiving the best quality work and worked with other accountants to make sure that everyone’s books were accurate and up to date.
• Positively participated in multiple times of the Microsoft Asian Spring Festival
• Led a team with 10 people to decorate the venue and arrange the venue layout
• Providing hot food and cloth, shoes, even books to those experiencing homeless and low-income people in Seattle
• Sorting and folding clothes for them to take
GPA: 3.19
GPA: 3.88
• Problem Solving with Excel, awarded by PwC on Coursera
• Data-driven Decision Making, awarded by PwC on Coursera
Skills: Microsoft Excel, Arcmap, and Python
Language Skills: Fluent in both English and Mandarin, intermediate in both Cantonese and Korean


--- layout: page status: publish published: false title: Events display_name: neil categories: [] tags: [] comments: [] ---
Come and join me at these events.
12th Feb 2019 - Leeds - Expert Talks
See More
19th Feb 2019 - Manchester - Devops Q and A


We'd like to hear from you
Whether if you have questions about any features, trails, need demo, prices or anything else,
We are ready to help and answer all of your questions
Join Us NowWhether if you have questions about any features, trails, need demo, prices or anything else,
We are ready to help and answer all of your questions
Join Us NowInterested in any of our products? Please call our experts
US: +1(800)-999-9999
UK: +44 9091-887-329
Email<EMAIL_ADDRESS>Support@wateringplants.com


Kenneth was born and raised in California before spending 13 years in Nevada and the last 2 years in Arizona. He enjoys spending time with his family, playing video games and watching his favorite football team Buffalo Bills and baseball team San Francisco Giants.
Allison was born in California before moving to the Philippines and living there for 13 years. Coming back to the US she has lived in California, Washington and Tennessee. She enjoys swimming, yoga, playing video games, and writing songs.
Doug was born in Illinois, and went on to live in Texas, Washington, and Florida. At 14 he was considered for admission to UW based on his SAT scores, but didn't end up actually starting college until he was 37.
Nasha was born and raised in Milwaukee, WI but has been living in Arizona for the past 7 years. In her spare time she loves traveling and demolished her 6 year old in Mario Kart.
Priya was born and raised in California, she attended community college for a short time majoring in Computer Science but then started attending Lambda School. She enjoys spending time with family, watching movies and watching basketball.
Ryan lives in South Dakota and has previously worked in the design industry. After deciding it was time for a change he now attends Lambda, and writes code instead.


Feds Defeat Lawsuit Over San Francisco Bay Dredging Dispute
by NICHOLAS IOVINOSAN FRANCISCO (CN) – A state agency cannot make the federal government dredge two vital San Francisco Bay channels more frequently, a federal judge ruled Monday, despite arguments that less dredging could increase the risk of a container ship accident or oil spill.
The San Francisco Bay Conservation and Development Commission (BCDC) sued the U.S. Army Corps of Engineers in September 2016, arguing the Corps violated federal law when it decided to dredge the Pinole Shoal and Outer Richmond Harbor channels every other year instead of annually.
The Corps, which has a duty to maintain federal navigation channels, says it took that action to cut the costs of complying with stricter water quality standards imposed by the state.
Under the Clean Water Act and Coastal Zone Management Act, federal agencies must comply with water quality standards enacted by states.
The Corps says clamshell dredging costs about three times more and takes up to 10 times longer than hopper dredging. Instead of using clamshell dredging, the Corps opted to continue hopper dredging in both channels, but to do so in alternating years.
The state water board argued that failing to dredge both channels annually could block larger ships from using the waterways and cause economic harm.
In a 17-page ruling, U.S. District Judge Richard Seeborg found no state or federal law requires the Corps to “address commercial interests” when it decides how to use its limited resources to comply with a state’s environmental standards.
The judge found a 2017 Northern District of Ohio ruling requiring the Corps to comply with state mandates while dredging a Cleveland Harbor channel was controlled by a different set of laws and facts. In that case, Ohio v. U.S. Army Corps of Engineers, the law specifically required the Corps to dredge channels in the Great Lakes and Congress had approved full funding for the project.
“Unlike the circumstances in Ohio, however, there is no indication that Congress provided a ‘line item approval’ of the full cost of complying with the state conditions, or otherwise provided ‘funding to cover the full costs of that compliance,'” Seeborg wrote.
The judge also rejected claims that dredging every other year could increase the risk of an oil spill as “speculation.” He added that no legal authority requires dredging more often to lower that potential risk.
The judge denied the state agency’s motion for summary judgment and granted the U.S. Army Corps of Engineers’ motion for summary judgment. He asked both parties to submit briefs within 20 days on whether any issues still need to be decided in the case. If no issues remain, Seeborg said he would issue a final judgment in favor of the Corps.
The U.S. Army Corps of Engineers, California Attorney General’s Office, which represents BCDC, and an attorney for intervening plaintiff San Francisco Baykeeper did not immediately respond to requests for comment Monday evening.
Copyright © 2019 courthousenews.com


Class DxfObject
Represents the base class for all DXF objects.
Inheritance
System.Object
DxfObject
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: netDxf
Assembly: CADability.dll
Syntax
public abstract class DxfObject
Constructors
| Improve this Doc View SourceDxfObject(String)
Initializes a new instance of the DxfObject
class.
Declaration
protected DxfObject(string codename)
Parameters
| Type | Name | Description |
|---|---|---|
| System.String | codename |
Properties
| Improve this Doc View SourceCodeName
Gets the DxfObjectCode.
Declaration
public string CodeName { get; protected set; }
Property Value
| Type | Description |
|---|---|
| System.String |
Handle
Gets the handle assigned to the DXF object.
Declaration
public string Handle { get; }
Property Value
| Type | Description |
|---|---|
| System.String |
Remarks
The handle is a unique hexadecimal number assigned automatically to every DXF object, that has been added to a DxfDocument.
Owner
Gets the owner of the actual DxfObject.
Declaration
public DxfObject Owner { get; }
Property Value
| Type | Description |
|---|---|
| DxfObject |
Methods
| Improve this Doc View SourceToString()
Obtains a string that represents the DXF object.
Declaration
public override string ToString()
Returns
| Type | Description |
|---|---|
| System.String | A string text. |
Overrides
System.Object.ToString()


nips nips2007 nips2007-72 nips2007-72-reference knowledge-graph by maker-knowledge-mining
Source: pdf
Author: Slav Petrov, Dan Klein
Abstract: We demonstrate that log-linear grammars with latent variables can be practically trained using discriminative methods. Central to efﬁcient discriminative training is a hierarchical pruning procedure which allows feature expectations to be efﬁciently approximated in a gradient-based procedure. We compare L1 and L2 regularization and show that L1 regularization is superior, requiring fewer iterations to converge, and yielding sparser solutions. On full-scale treebank parsing experiments, the discriminative latent models outperform both the comparable generative latent models as well as the discriminative non-latent baselines.


Performs an immidiate call to a server-side method using an ajax call.
In this case there's no need to use Ajax. We could have just sent the weekday as a parameter to display instead.
{O2ROOT}/var/doc/tutorials/taglib/Html/Ajax/ajaxAttributes.html.inc" />


Author~ {{quote.author}}
Submitted by {{quote.name}}
Days passed after creation {{quote.dateCreated|dates}} !


I’m an experienced software, data, and
video engineer, data scientist, and educator.
I’ve worked in large commercial, startup,
academic, government, and not-for-profit
settings.
I’m always excited to discuss new ideas or
projects and to share my experiences.
Education
Ph.D. Program (ABD/Unfinished)
Applied Mathematics, Applied Statistics & Scientific Computing
University of Maryland at College Park
—
Certificate (Non-credit)
Executive Data Science Specialization
Johns Hopkins University (via Coursera)
2016
Certificate (Executive Education)
Innovation Management (Non-Credit)
University of Maryland at College Park
2010
Master of Science
Applied Mathematics & Scientific Computing
University of Maryland at College Park
2007
Graduate Certificate
Computational Harmonic Analysis
University of Maryland at College Park
2007
Graduate Certificate
Scientific Computing
University of Maryland at College Park
2007
Bachelor of Science
Mathematics; Computer Science; minor: Japanese Studies
Loyola University New Orleans
2001
Professional Activities
Sr. Software Engineer
since 2023
Instructor in Computer Science
since 2017
Staff Software Engineer
2022 - 2023
Data Scientist & Software Architect
2013 - 2023
Sr. Software Engineer
2021 - 2022
Data Engineer / Sr. Backend Engineer
2016 - 2021
Volunteer Activities
Event Volunteer & Control Systems Advisor
since 2023
Mentor, Code & Controls
since 2022
Board Member
since 2020
Research Associate Pro Bono
since 2016
Brigade Captain & Chief Data Wrangler
2016 - 2023
Research Affiliate, Norbert Wiener Center, UMCP
2014 - 2019


{% extends "base.html" %} {% block title %}Homepage{% endblock %} {% block content%}
? Running ? Scheduled ? Completed
New experiment


HidGame is the WDM/HID
minidriver for analog joysticks. This driver registers with the HID class
driver and responds to IRPs put out by HIDclass. It informs HID class about the
capabilities of the joystick and polls the joystick in response to a read
IOCTL.
This driver is loaded in
reponse to a "New Hardware Found" Plug and Play (PnP) event, and
consequently must have an entry in an .inf file that binds a PnP hardware ID to
this driver. Gameport joysticks are not true PnP devices, so the user (through
the GameControllers Control Panel) informs the system about a joystick attached
to the gameport. An example of how a new joystick type can be created is
provided in the accompanying .inf file. Once a user selects a joystick and
gameport, the GameControllers CPL sends an IOCTL to the gameport bus driver
(GameEnum), specifying the number of Axis / Buttons and a PnPHardware ID for
the joystick. The Gameport Bus informs PnP of a new device arrival. PnP
searches the system for a match for the hardwareID and loads the appropriate
driver.
Use standard Windows
NT®/Windows® 2000 build tools. In the hidgame directory, type build. The
build script will generate the driver Hidgame.sys
You can test your driver
using the the following apps/tools.
· Game Controllers Control panel from
the Standard Control panel
· Diquick.exe (from the IDW directory)
· Shipping Microsoft DirectX games
Universal Serial Bus HID Usage Tables, Version
1.0, USB Implementers Forum.
Files Description
Hidgame.htm The documentation for this sample (this file)
Sources The generic file for building the code sample
Makefile Used as part of the build process
OEMsetup.inf The .inf file for installing the code sample
HidGame.c DriverEntry, CreateClose, AddDevice and Unload routines
PnP.c Support routines for PnP IOCTLs
RemLock.c Support routines to enhance checking for removal locking
Ioctl.c Support routines for Non PnP IOCTLs ( read/Device descriptor/Device Attributes, and so on)
HidJoy.c Support routines to configure the joystick
Poll.c Support routine for analog joystick polling
i386\timing.c Support routines to use x86 time stamp counter
Hidgame.h Common include file
Debug.h Definitions to aid debugging
Analog.h Definitions specific to analog joystick devices
Hidgame.rtf Autodoc doumentation for Hidgame
This sample has embedded
comments in the source code. The AutoDoc utility was used to generate the
following AutoDoc comments RTF file from the source
code.
|
|
© 2004 Microsoft
Corporation


Week 1: Variables, storing data, and simple plotsThis week's assignment will be lighter than the average assignment, it is intended to just get you up and running with Matlab.
In this assignment, you will play around with storing data in arrays and making some simple plots.
This assignment is due on Tuesday, Sept. 30th, at 9:30am (1) Getting MATLABThe first major assignment you have for this week is to get your hands on a copy of Matlab! You can see instructions on how to do so here. We strongly recommend having a local copy of Matlab installed, as it will be much easier and faster to do your analysis on your local machine rather than accessing Matlab over the network. If you anticipate any problems or trouble getting access to Matlab, please let the instructors know as soon as possible. We will assume going forward that you have access to Matlab. (2) Familiarize yourself with the Matlab environment and the command line
(3) Make plots of the following functions:
Note: you can save plots by clicking the save icon in the plot window. Save them as a JPG or PNG to import them into other programs. (4) Answer the following questions:
x = [2 5 7 9]; y = x; y = 5;
y = (x-min(x))./max(x) SubmissionYou only need to submit your work for problems 3 and 4. Just make a short document with your plots from question (3) and your answers from question(4). Email this document (preferrably in a PDF format) to the staff mailing list<EMAIL_ADDRESS>with [Assignment 1] in the subject line. |