March, 2017
南外146人保送名校 其中25人保送清华北大
2017-03-14 03:05:47 来源: 现代快报(南京) 这里有北大保送笔试第一名，也有“小清新组合”中榜清华 一所学校出了25个清华北大的保送生，保送录取率居全国外语学校之首。这说的就......
TensorFlow 1. GradientDescentOptimizer Explanation on Linear Regression Model
To understand how TensorFlow works, we may need to learn a little bit the backend theory of some basic features. In my thought, the most wanted to know is the GradientDescentOptimizer feature. The core method of the feature is minimize. You can see the method everywhere in TensorFlow code. First, let’s check the official document first. Here is the link for for GradientDescentOptimizer. Minimize, https://www.tensorflow.org/api_docs/python/tf/train/GradientDescentOptimizer , copied here for detail. Add operations to minimize loss by updating var_list This method simply combines calls compute_gradients() and apply_gradients(). If you want to process the gradient before applying them, call compute_gradients() and apply_gradients() explicitlyRead More
......Advice From a Dean of Admissions on Selecting High School Courses
By TANYA ABRAMS MAY 13, 2013 5:53 AMMay 13, 2013 5:53 am Photo Jeff RickeyCredit We’ve heard it time and again: rigor is one of the most important aspects of a college student’s application. But how exactly does a student present an awe-inspiring college application — one replete with challenging classes and impressive activities — without compromising his or her performance in those areas? As high school students select their classes for next year, should they consider taking less advanced courses, in an effort to earn high grades? I thought itRead More
......美国阶级分化严重，教育难以改变贫困命运
JASON DePARLE 2013年8月3日 德克萨斯州加尔维斯顿——安吉莉卡·冈萨雷斯(Angelica Gonzales)在高中时走的是“哥特路线”——黑靴子、链条和工装裤——她的优等生身......
Sketch of the Analytical Engine – Charles Babbage
Sketch of Invented by Charles Babbage By L. F. MENABREA of Turin, Officer of the Military Engineers from the Bibliothèque Universelle de Genève, October, 1842, No. 82 With notes upon the Memoir by the Translator ADA AUGUSTA, COUNTESS OF LOVELACE http://www.fourmilab.ch/babbage/sketch.html Those labours which belong to the various branches of the mathematical sciences, although on first consideration they seem to be the exclusive province of intellect, may, nevertheless, be divided into two distinct sections; one of which may be called the mechanical, because it is subjected to precise and invariableRead More
......A working hand-cranked Difference Engine made using LEGO® pieces
Difference Engine 3. (click for larger image) (note:detail theory here, http://robroy.dyndns.info/collier/ch3.html) History Before the day of computers and pocket calculators all mathematics was done by hand. Great effort was expended to compose trigonometric and logarithmic tables for navigation, scientific investigation, and engineering purposes. The larger efforts involved rooms of semi skilled people, called ‘computers’, capable of doing reliable arithmetic who would be under the direction of a skilled mathematician. In the mid-19th century, people began to design machines to automate this error prone process. Many machines of various designsRead More
......The guy who came up with the idea for Snapchat got $158 million and vanished from public life
Picaboo founders Reggie Brown, left, Bobby Murphy and Evan Spiegel celebrate the app’s creation during a Los Angeles dinner, according to a lawsuit filed by Brown. (Court filing) Samantha MasunagaContact Reporter It’s been six years since then-Stanford University junior Reggie Brown hatched the idea that would become popular vanishing photo app Snapchat. But while his former friends and Stanford classmates Evan Spiegel and Bobby Murphy are preparing a Wall Street debut for the company now known as Snap Inc. — potentially Los Angeles’ biggest-ever initial public stock offering — little isRead More
......What’s Up With That: How a Swinging Pendulum Proves the Earth Rotates
Foucault’s Pendulum at Museu de les Ciències Príncipe Felipe in Valencia (Spain). Photo: Manuel M. Vicente/Wikimedia Commons ONCE UPON A time, you were probably on an elementary school field trip at a science museum or an observatory. Just before lunch, your teacher had the class stand in a circle around an enormous weight suspended on a string, and watch it swing back and forth, back and forth. The teacher (or maybe a tour guide) explained that if you watched the pendulum for long enough, it would seem to alter itsRead More
......44万人去年来华留学排亚洲第一 韩美泰生源居前三
2017-03-01 20:58:00 来源: 澎湃新闻网(上海 3月1日，澎湃新闻从教育部举行的新闻发布会获悉，十八大以来，来华留学规模持续增长。2016年留学生规模突破44万，比2012年增......