• Lesson 5 What Are They Doing练习题及答案.doc
• 五下英语Lesson What are they doing正式PPT课件.pptx
• 五年级下英语Lesson What Are They Doing冀教PPT课件.pptx
• Grammar focus 语法点： 以What ...What is/is/are he/she/they doing? Cutting the grass. Walking the dog. Washing the dishes. Practice 练习 What are they doing? They are Making dinner. # make -...

Grammar focus 语法点： 以What 开头的问句
What is/is/are he/she/they doing?
Cutting the grass.
Walking the dog.
Washing the dishes.

Practice 练习

What are they doing?
They are Making dinner.  # make -> making(去e+ing)

What is he doing?
He is washing the dishes.  # wash -> washing(+ing)

What are they doing?
They are making the bad  # make -> making (去e+ing)

What is he doing?
He is taking out the trash [træʃ]   # taking (去e+ing)

What is he doing?
He is washing the car  # wash -> washing (+ing)

What is she doing？
She is watering the grass [ɡræs]  # water -> watering (+ing)

What are they doing？
They are getting the mail   # get -> geting (+ing)

What is he doing?
He is making lunch.  make - making (去e+ing)

What are they doing?
They are cutting the grass.   # cut -> cutting (+ing)

What is she doing?
She is doing the laundry  # do -> doing ( +ing)

What is she doing?
She is drying the dishes # dry -> drying(+ing)

What are they doing?
They are taking out the trash  # take -> taking(+ing)

PS: 注意 they 和 the 的读音一致

Words
ride a bike / bicycle
cycle  自行车；
recycle  回收
brush [brʌʃ] 刷子
clean the kitchen  清理厨房
clean the toilet   清理马桶
clean the windows  清理窗户
mop the floor  托地
take the rubbish out  扔垃圾
wash the dishes
cook dinner
do the laundry
recycle [,ri'saɪkl]  the rubbish
microwave oven  [ˈʌvən]  微波炉
microsoft 微软

sentenes
I help somebody do something.
I help my wife feed daughter everday.
My wife helps me wash clothse（do the laundry）  # 三单后面是动词原型
But the class is canceled  # 但课程被取消了
When class after I go to have dinner # 上课后我去吃饭

Extend-Exercises
She's eating an apple
He is waitting for a bus
They are playing football
He is lieing on the floor
Thay are eatting breakfast
She is sitting on the table

Where 's John? He's in the kitchen. He is cooking
You are standing on my foot , Oh, I'm sorry
Look!Somebody is swimming in the river
We're here on holiday. We are staying at the Central Hotel.
Where's Ann? She is having a shower
They are building a new theatre in the city centre at the moment.
I am going now.Goodbye

Jane isn't having dinner.
She's watching televiosion
She is sitting on the floor
She isn't play the piano  (PS:乐器前面 play不加ing）
She is laughing
She is wearing a hat
She isn't writing a letter

转载于:https://www.cnblogs.com/Cong0ks/p/9781089.html
展开全文
• Runlevel defines the state of the machine after boot. After the Linux kernel has booted, the init program reads the /etc/inittab file to det

Runlevel defines the state of the machine after boot. After the Linux kernel has booted, the init program reads the /etc/inittab file to determine the behavior for each runlevel. Unless the user specifies another value as a kernel boot parameter, the system will attempt to enter the default runlevel.
0 halts, 1 Single-User Mode without network. 2 Multi-User Mode without network. 3 Multi-User Mode with network. 4 Not used/User-definable For special purposes. 5 X11, 6, reboots. 
展开全文
• What are the different stats a file can be in Alluxio and what do they mean? #1-ALLUXIO/TOPICS Question What are the different stats a file can be in and what do they mean? I have seen TO_BE_PERSISTED...
What are the different stats a file can be in Alluxio and what do they mean?
#1-ALLUXIO/TOPICS
Question
What are the different stats a file can be in and what do they mean? I have seen TO_BE_PERSISTED, PERSISTED, NOT_PERSISTED and today I saw LOST. Are these documented somewhere?
/**
* The persistence state of a file in the under-storage system.
*/
public enum PersistenceState {
NOT_PERSISTED, // file not persisted in the under FS
TO_BE_PERSISTED, // the file is to be persisted in the under FS
PERSISTED, // the file is persisted in the under FS
LOST // the file is lost but not persisted in the under FS
}

NOT_PERSISTED means that the user specified on write that the data was only to be in Alluxio cache with the write-type of MUST_CACHE
TO_BE_PERSISTED means that the user requested an ASYNC_THROUGH write and that the file is available in Alluxio but the job server hasn’t gotten to persisting the file to the UFS
PERSISTED means that the file has been stored in the UFS
LOST means that a file that was either in a NOT_PERSISTED or TO_BE_PERSISTED state has been wiped from the Alluxio Worker storage. In both scenarios, the file is deemed as LOST and the data for that file is no longer available.
Nevertheless, if one of the blocks, which stores in alluxio worker, of a file, were lost. The files would be reported as LOST by alluxio.

中文版本
在Alluxio文件系统中，一个文件或者目录可能有四种状态。它们分别是NOT_PERSISTED，TO_BE_PERSISTED，PERSISTED，LOST。对应的含义为未持久化，准备持久化，已经持久化，文件丢失。 特别一提，如果存储在Alluxio中的文件对应的任意一个块儿已经在worker节点上丢失，那么这个文件在Alluxio中就会被标记为丢失状态。 请看注释，
/**
* The persistence state of a file in the under-storage system.
*/
public enum PersistenceState {
NOT_PERSISTED, // file not persisted in the under FS
TO_BE_PERSISTED, // the file is to be persisted in the under FS
PERSISTED, // the file is persisted in the under FS
LOST // the file is lost but not persisted in the under FS
}

展开全文
• Features: What are they? Several computer vision tasks require finding matching points across several frames or views. With that info, you could really do a lot of stuff. An example. When d

Features: What are they?

name="f3b4d1ae88" width="595px" height="1000px" frameborder="0" allowtransparency="true" allowfullscreen="true" scrolling="no" title="fb:like Facebook Social Plugin" src="http://www.facebook.com/v2.4/plugins/like.php?action=like&app_id=&channel=http%3A%2F%2Fstaticxx.facebook.com%2Fconnect%2Fxd_arbiter.php%3Fversion%3D42%23cb%3Df254e713c4%26domain%3Daishack.in%26origin%3Dhttp%253A%252F%252Faishack.in%252Ff2d26a8c5%26relation%3Dparent.parent&container_width=597&href=http%3A%2F%2Ffacebook.com%2Faishack&layout=standard&locale=en_US&sdk=joey&show_faces=true&width=595" style="box-sizing: border-box; position: absolute; border-style: none; border-width: initial; visibility: visible; width: 0px; height: 0px;">

Several computer vision tasks require finding matching points across several frames or views. With that info, you could really do a lot of stuff. An example. When doing stereo imaging, you want to know a few corresponding points between the two views. Once you do, you can triangulate almost all points on the image (just like the brain does!).
The first approach: Patches
Intuitively, you'd be tempted to match small "patches" between the two images. Something like this:

You want to find the left image's green path in the right. And you can do that quite easily. The white thingy makes the patch quite unique. Even something as trivial as template matching would be able to find it.
But, not all patches are so uniquely recognizable. Check the patches below:

There are no unique "features" to identify on the wall. So you'll have problem finding corresponding points. So the patches approach isn't that great.
Corners
Corners in an image seem to be perfect for such tracking tasks. Here's an example image:

These corners are perfect! Why?
Uniquely identifiable
These points are uniquely identifiable. What do I mean by that? Here's what. Lets say you're trying to find the green corner in the right image (in the image below). You know that it'll be somewhere around the same location. So you can narrow down the "search region". And within this search region, there would be only one point that resembles the corner.
Of course, the assumption here is that there isn't a massive difference between the two images. And this is usually a reasonable assumption.

Stable
These points usually don't keep moving around in the image. This helps tracking. And any motion of this point, even a little one, produces a large variation. You can clearly see the point moving around.
I'll try to make the idea of a "corner" more concrete. We'll use some math to do this. How do you identify a bad feature? Something that doesn't have a lot of variation... like the example of the wall above.
There are no edges or corners in the feature. So, the first derivative is flat, in both directions, x and y. Or, the first derivative is flat in all directions (all directions are a certain combination of the x and y component).
So, the second derivative also does not change in any direction.
An edge
An edge is a bad feature as well. If you move in the direction of the edge, you won't even know you're moving. For example, if you move along the edge at the top of the building and the sky, you won't even realize it.

But if you move from the building to the sky (perpendicular to the edge) you'll "see" motion. This is the only direction where you can accurately tell how fast the object is moving.

So edges aren't that useful as features.
The first derivative changes in only the one direction (perpendicular to the edge). Some progress, but not that good. So, the second derivative also changes in only one direction.
A corner
A corner is an awesome feature! There's variation all around a corner. So, the derivative changes in all directions. So the second derivative also changes in all directions! Great! And you can write pretty efficient programs to calculate that at all points.
So there you have it! Identifying good features: If the first derivative keeps changing around a point, you know you have a corner. And you also know you have a good feature to track!
So what exactly is a feature?
By now, you've hopefully have an idea of what a feature is. At least intuitively. If not, go read the post again... because there are no formal definitions of a feature till now. :P

from: http://aishack.in/tutorials/features/
展开全文
• 作者：范军 （Frank Fan） 新浪微博：@frankfan7 本文是我在Toastmaster英语演讲俱乐部的演讲草稿。文章系东拼西凑而成。 opening,body和conclusion是草稿。随后是参考文章，以及...Topic: What are your strength ...
• tips talk about three kinds of things knowledge-based skills,or specific skills you’ve learned either in school or by working,such as computer skills, a university ...is what we would call tra...
• http://swreflections.blogspot.com/2013/01/hardening-sprints-what-are-they-do-you.html
• 39 What Determines the Kind of Person You Are ？是什么决定了你是哪种内型的人 ？ ①What determines the kind of person you are?What factors make you more or less bold,intelligent,or able to read a map?...
• The first two are what you would normally call stars. According to the above definition, however, all shapes in the first row are star-shaped. The two in the second row are not. For each star shape, a...
• What are the different layers in a software application, and how do they communicate with each other? to be continued
• Topic: What are your strength Date：16 Jan 2014 Opening How many of you have ever done a new year’s resolution inthe past? What do you normally put inthe plan? I normally put something Iwant to ...
• more on that later) depending on what you are trying to achieve. So, when you are sending JWT to someone, it is essentially either a JWS payload or a JWE payload. JWS payload is more popular for ...
• They are constantly making quiet observations on each one, trying to pinpoint which among them have what it takes to handle the responsibilities of a higher position. In fact, managers think ...
• (adsbygoogle = window.adsbygoogle || []).push({});...What are the lesser known but useful data structures? There are some data structures around that are really useful but are unknown to most programmers
• 一个关于kernel的很好的解析： https://www.quora.com/What-are-Kernels-in-Machine-Learning-and-SVM ...What are Kernels in Machine Learning and SVM? I'm trying to get into SVM, but I cannot get t
• Here are some ideas to get you started: 1. Stop spending time with the wrong people. – Life is too short to spend time with people who suck the happiness out of you. If someone wants you in ...
• What Are Your Career Expectations? this is a common question, think for a while
• Ask, “What Would the User Do?” (You Are Not the User)Giles ColborneWE ALL TEND TO ASSUME THAT OTHER PEOPLE THiNK LiKE US. But they don’t. Psychologists call this the false consensus bias. When ...
• What are your Career Expectations? Was there a time in your life wherein you were expecting for something and it did not happen? It could be a pay raise or a promotion that you had anticipated for mo
• this period,they work hard to accumulate money for paying a down payment.Because they are planing to marry the other half.The parents of the girl,even herself,require the boy owning a car,a hou
• Your Customers Do Not Mean What They SayNate JacksonI’VE NEVER MET A CUSTOMER YET that wasn’t all too happy to tell me what they wanted—usually in great detail. The problem is that customers don’t...
• These forums are unique in that they provide a venue for those with varying perspectives to have an open and honest dialog. 这些论坛的独特之处在于，它们为不同观点的人提供了一个公开和诚实对话的场所。 ...
• Groups for Office 365 is a new way of working ... They focus on the collaboration experience rather than one specific technology like SharePoint.Let's take a look at how it works and if it's a contender
• Do what you love: Why you are not your job
• The emergence of systems capable of independent reasoning and action raises serious questions about just whose interests they are permitted to serve, and what limits our society should place on their ...

...