h*********e
发帖数: 56 | 1 two vectors define a circle:
1. (x, y, z) location of the center
2. (a, b, c) normal of the plain it's in, |(a, b, c)| is the radius. |
|
c***g
发帖数: 472 | 2 A dart is thrown at a circular dart board of radius one. The dart can land
at any place on the dartboard with equal probability. What is the mean
distance between where the dart hits and the center of the board?
solution 是这样的:
Lets consider the dartboard in polar coordinates. The dart can land at any
angle relative to the center with equal probability. Next take the intregral
from the least to the greatest distance, 0 to 1. The density function at
distance d is 2*pi*d/pi = 2d.
请问这里的density funct |
|
i******e
发帖数: 1811 | 3 An water pipeline has a radius of 2 meters and is 300 yards long. If the
pump is operating at 60 gallons per hour, how much water passes through the
entire pipeline in an hour? |
|
s****a
发帖数: 528 | 4 If now we have N numbers, and we want to choose k number with minimum radius
. P(N, k) on array A
sort the N numbers, the minimum distance is |Aj-Aj+1|, we know
either Aj or A(j+1) must not be in the k number
so the problem becomes P(N-1, k) on array without Aj, or without Aj+1 |
|
A*********r
发帖数: 564 | 5 为了这道题，专门复习了一下dp,并且把两个帖子的回复都仔细研读了一遍，现在来总
结一下吧。
原题：给定M个数字的从1到N的整数数组，找出一个大小为K的子集，这个子集
的半径定义为最小的pair Distance，让找出最大半径的这样的子集。
首先说如果是brute force, 要从M个数中选出K个数，然后计算每个K子集的半径，找到
最大的那个，复杂度为 C(M,K), 算是exponential的了。。
然后很显然这是个optimization problem (maximize the radius),所以可以考虑用DP.
用DP的最重要的就是找到如何从已知的optimal subproblem, 推导出当前的optimal
state. 对于这个题，就是如何从已知的optimal (K-1)元素的子集的， 得到含有K元素
的optimal的子集。
在回复很多人都知道这一点，如果没有特殊的约束条件，这两个子集可以完全不一样，
也构不成DP中的subproblem了。所以我们要先sort输入数组，这样保证了每一个pair
distance involving i and previo |
|
D*****d
发帖数: 1307 | 6 it seems that a rectangle could be represented by center, radius and
diagonal angle.
Just guessing |
|
P********i
发帖数: 172 | 7 Phone 1:
:
What is “static” variable?
How can many instance share a resource
What is deadlock, how to prevent it?
Compare whether two strings s1, s2 are equal, inside a huge set of string.
Normal way is to compare each character one by one, but it is O( n ) time
complexity. What type of short circuit can u think?
One short circuit is to use the length, since s1.len <> s2. len , then
return false. Anything else you can think of in the similar way?
My answers:
Hashtable? No, need extra spac... 阅读全帖 |
|
P********l
发帖数: 452 | 8 生成两个随机数 (theta, r).
theta is uniform distributed
r = 1/sqrt(uniform). (<>0)
目的是让面积*密度=常数。
Given a perfect random generator Random(n) which can generate number between
[0,1], write a program to generate a random pair of (x, y) within a circle
of radius 1, and with (0,0) center with uniform distribution inside the
circle. What is the expect probability of values fall into the circle? |
|
g**u
发帖数: 583 | 9 马上就要G on site了，
求祝福。
下面是从本版收集到的Google的试题，便于大家查询。
申明：有的附带有解释说明的，也来自于本版或者网络，大家自己看， 不保证真确
http://www.mitbbs.com/article_t1/JobHunting/31847453_0_1.html
本人ECE fresh PhD，背景是电路/EDA，跟G业务基本没什么关系
同学内部推荐的，很简单的一次电面就给了onsite
题都不难，但是自己没把握好机会，出了一些小bug。
总的感觉，出错就是硬伤，宁可从最简单的算法写起，也不能出错。
电面：
1，Skip list， http://en.wikipedia.org/wiki/Skip_list
写code实现struct skip_list * find(struct skip_list *head, int value)
2，sorted array with repeated elements
for given element, find out its range.
e.g. A A B B B B B C C D D E F ... 阅读全帖 |
|
e***e
发帖数: 26 | 10 Job Title: VoIP Software Engineer
Job Description: Develop high performance VoIP softswitch for next
generation communication networks based on SIP protocols on Unix/Linux
and Windows platforms. Develop communication billing systems within
distributed system based on Radius and AAA protocols. Perform system
architecture design, implementation, testing and technical support.
Ultilize mathematics and network algorithm to design large high
performance distributed communication systems... 阅读全帖 |
|
e***e
发帖数: 26 | 11 Job Title: VoIP Software Engineer
Job Description: Develop high performance VoIP softswitch for next
generation communication networks based on SIP protocols on Unix/Linux
and Windows platforms. Develop communication billing systems within
distributed system based on Radius and AAA protocols. Perform system
architecture design, implementation, testing and technical support.
Ultilize mathematics and network algorithm to design large high
performance distributed communication systems... 阅读全帖 |
|
i*****e
发帖数: 63 | 12 Good point.
The first thing came into my mind is to find a circle with minimal radius to
include n points.
'Cos all the points are on a single line, I believe the basic idea would be
similar to yours |
|
l******1
发帖数: 85 | 13 Do you know a business or technology professional that is currently looking
for their next career opportunity?
Hi, my name is Riz and I’m a business and technology recruiter with
Genesis10 (www.genesis10.com). I have a great career opportunity right now
with one of our key clients and I’m hoping you can refer me to someone who
would fit this role. If you are interested please send me your updated
resume in Ms Word.
Genesis10 is one of the fastest growing, privately-held business and
technology ... 阅读全帖 |
|
S**I
发帖数: 15689 | 14 ☆─────────────────────────────────────☆
gzou (gzou) 于 (Thu May 12 02:26:35 2011, 美东) 提到:
马上就要G on site了，
求祝福。
下面是从本版收集到的Google的试题，便于大家查询。
申明：有的附带有解释说明的，也来自于本版或者网络，大家自己看， 不保证真确
http://www.mitbbs.com/article_t1/JobHunting/31847453_0_1.html
本人ECE fresh PhD，背景是电路/EDA，跟G业务基本没什么关系
同学内部推荐的，很简单的一次电面就给了onsite
题都不难，但是自己没把握好机会，出了一些小bug。
总的感觉，出错就是硬伤，宁可从最简单的算法写起，也不能出错。
电面：
1，Skip list， http://en.wikipedia.org/wiki/Skip_list
写code实现struct skip_list * find(struct skip_list *head, int value)
2，sorted array... 阅读全帖 |
|
S**I
发帖数: 15689 | 15 ☆─────────────────────────────────────☆
gzou (gzou) 于 (Thu May 12 02:26:35 2011, 美东) 提到:
马上就要G on site了，
求祝福。
下面是从本版收集到的Google的试题，便于大家查询。
申明：有的附带有解释说明的，也来自于本版或者网络，大家自己看， 不保证真确
http://www.mitbbs.com/article_t1/JobHunting/31847453_0_1.html
本人ECE fresh PhD，背景是电路/EDA，跟G业务基本没什么关系
同学内部推荐的，很简单的一次电面就给了onsite
题都不难，但是自己没把握好机会，出了一些小bug。
总的感觉，出错就是硬伤，宁可从最简单的算法写起，也不能出错。
电面：
1，Skip list， http://en.wikipedia.org/wiki/Skip_list
写code实现struct skip_list * find(struct skip_list *head, int value)
2，sorted array... 阅读全帖 |
|
j**d
发帖数: 825 | 16 好像不错，而且不需要经验，背景，有什么猫腻么？
Merchant Sales Consultant Position
The position involves selling credit card processing and merchant services
via pre-set appointments within a 25 mile radius of your home zip code. The
position will provide 15-25 appointments weekly, and you will be assisted
virtually on all deals via a sales manager (team leader) in our Dallas
office.
Position Requirements:
Satisfactory background check results
Positive attitudes and strong character needed
Outgoing and Ener... 阅读全帖 |
|
b***e
发帖数: 1419 | 17 Find a random value r1 between [0,1], let a = r1*2*PI, that's the angle.
Find a random value r2 between [0,1], let r = sqrt(r2), that's the radius.
The trick is not to use r2 as r directly. |
|
b***e
发帖数: 1419 | 18 Yes, the question is how to realize the function to get the radius. I've
indicated that it's in fact the square root.
跟r |
|
b*******S
发帖数: 17 | 19 容错的话 先看有没有single point of failure
有的话 想办法变双份或多份 (请参考DNS的设计)
然后再来要问到底要那种层词的容错
是要挂掉后修得回来(Backup回来就可以继续动)
还是资源都给双份或多份 所以有错可以知道 或是可以经过计算把错误略掉
或是直接考虑东西本来就会东坏西坏 (如map reduce),把坏掉当常态 然后就把没算完
的重算就是
知道要那一种层次的容错后 就可以开始考虑各种resources 范例如下
CPU failure
RAM (e.g., ECC)
Storage (e.g., Hadoop file system)
Database (e.g., 异地备份)
Network (e.g., 双网路卡)
可扩展性就比较虎烂了
因为首先要知道甚么样的扩展性
是指memory space可以增大 还是CPU运算量可以一直冲
如果以Hadoop来讲 要变快就一直加 nodes,但是 map 跟reduce中间的中间值需要排序
等等 也会有个bottleneck,但是这bottle neck,可能不好估
像super computing就... 阅读全帖 |
|
x*****c
发帖数: 284 | 20 有兴趣给我发简历，我可以帮你refer。
Software Engineer II - SJ (All)
Preferred Experience Requirements:
Bachelor’s degree in Computer Science, Computer Engineering, Electrical
Engineering, Physics or equivalent
Minimum 3 years of embedded software design experience with 1 year
minimum writing programs for embedded Linux
Solid programming experience in C and C++ with emphasis on embedded
systems
Experience with embedded Linux development environment and tool chain
Understanding of Linux codi... 阅读全帖 |
|
s*****n
发帖数: 5488 | 21 来自主题: JobHunting版 - 请教一道题 1. 1-5
2. 1-5
0-7
3. 1-5
1-2
0-7
4. 1-5
1-2
0-[6-7] 2
5. 1-[4-5] 2
1-2
0-[6-7] 2
6. 1-[2-5] 4
0-[6-7] 2
7. 1-[2-5] 4
0-9
0-[6-7] 2
8 1-[1-5] 5
0-9
0-[6-7]
you need to build a prefix radius tree and with sibling link at the leaf
level then merge with prev and next when you insert a new int into the tree.
this solution has O(n) time and 32*n space.
|
|
f**a
发帖数: 10 | 22 Please PM me if you are interested. (Base Salary=80% x Total Comp
Commission=20%x Total Comp). Commission can be accelerated if finishing
over 100% of your team quota.
Job Title: Senior Systems Engineer
Location: US - CALIF, Santa Clara
Alternate Location:
Function: Sales
Position Overview
The Senior Systems Engineer (Sales Engineer) understands various complex
networking and security infrastructures being deployed by the largest
enterprise organizations. They are responsible... 阅读全帖 |
|
A********r
发帖数: 30 | 23 http://www.indeed.com/m/viewjob?jk=04afdcfc95c063c4&from=serp
Discipline
Physicians
Specialty
Internal Medicine
Subspecialty
Gastroenterology
Shift
Duration
Start Date
ASAP
Pay Rate
$500,000.00 - $1,200,000.00
Job Description & Requirements
$1 million income Gastroenterology opportunity in Texas!
Greetings! My name is Rick Novak, Senior Consultant at Merritt Hawkins and I
wanted to reach out and share a new opportunity with a stable partnership
of Gastroenterologists to join them in growing one ... 阅读全帖 |
|
f**a
发帖数: 10 | 24 跟风发个招sales engineer的广告, 有很多的技术演讲的机会。Cyber Security目前相
当的火。希望有更多国人能加入到销售的行列。
PM me if interested
Job Title: Senior Systems Engineer - Security Specialist
Position ID #: PRR22381
Location: US - Remote
Alternate Location:
Function: Sales
Senior Systems Engineer –Security Specialist
Ixia (NASDAQ: XXIA) provides application performance and security resilience
solutions so that organizations can validate, secure and optimize their
physical and virtual networks. Enterprises, service ... 阅读全帖 |
|
f**a
发帖数: 10 | 25 PM me if interested
Job Title: Senior Systems Engineer - Security Specialist
Position ID #: PRR22381
Location: US - Remote
Alternate Location:
Function: Sales
Senior Systems Engineer –Security Specialist
Ixia (NASDAQ: XXIA) provides application performance and security resilience
solutions so that organizations can validate, secure and optimize their
physical and virtual networks. Enterprises, service providers, network
equipment manufacturers and governments worldwide rely o... 阅读全帖 |
|
y*******4
发帖数: 3837 | 26 【 以下文字转载自 Florida 讨论区 】
发信人: yoguo2004 (Sela'ma ashal'anore!), 信区: Florida
标 题: 奥兰多附近美国公司招人两个职位- 要求普通话读写熟练
发信站: BBS 未名空间站 (Tue Feb 21 10:36:11 2017, 美东)
Here are basic requirements:
* Fluent in Mandarin and English (read, write mandarin is a must)
* Located within a 25 mile radius
* Work status- Green Card or Perm Residency (no OPT or student visa)
Position 1
Customer Service $13.00/hr, Monday through Friday from 9-6pm (hours may vary
depending on department needs).
In-bound Call from Distrib... 阅读全帖 |
|
e***e
发帖数: 26 | 27 【 以下文字转载自 JobHunting 讨论区 】
发信人: elake (elake), 信区: JobHunting
标 题: 【Job Opening】Software Engineer
发信站: BBS 未名空间站 (Thu May 26 15:41:23 2011, 美东)
Job Title: VoIP Software Engineer
Job Description: Develop high performance VoIP softswitch for next
generation communication networks based on SIP protocols on Unix/Linux
and Windows platforms. Develop communication billing systems within
distributed system based on Radius and AAA protocols. Perform system
architecture design, implementat... 阅读全帖 |
|
e***e
发帖数: 26 | 28 Job Title: VoIP Software Engineer
Job Description: Develop high performance VoIP softswitch for next
generation communication networks based on SIP protocols on Unix/Linux
and Windows platforms. Develop communication billing systems within
distributed system based on Radius and AAA protocols. Perform system
architecture design, implementation, testing and technical support.
Ultilize mathematics and network algorithm to design large high
performance distributed communication systems... 阅读全帖 |
|
g******s
发帖数: 6 | 29 We are seeking a highly motivated postdoctoral researcher to join in a USDA-
funded project on watershed management and water quality in Missouri
watersheds. The position is available immediately. The successful candidate
will work with a group of scientists, graduate and undergraduate students at
Cooperative Research Programs at Lincoln University in Missouri. Research
will be in the area of field experiment and application of hydrologic/water
quality models for watershed management. Research c... 阅读全帖 |
|
g******s
发帖数: 6 | 30 We are seeking a highly motivated Master graduate student in environmental
science to join in a USDA-funded project on watershed hydrology and water
quality in Missouri watersheds. The assistantship is available immediately.
The successful candidate will work with environmental scientists at
Cooperative Research Programs at Lincoln University in Missouri and Cropping
Systems and Water Quality Research Unit, USDA-ARS in Columbia, MO. Research
will focus on understanding hydrologic processes contr... 阅读全帖 |
|
e***e
发帖数: 26 | 31 Job Title: Software Programmer
Job Description: Develop high performance telecom softswitch based on SIP
protocols on Unix/Linux and Windows platforms. Develop communication
billing systems within distributed system based on Radius and AAA protocols.
Perform system architecture design, implementation, testing and technical
support.
BS or MS in Computer Science or Engineering plus 0-2 years of
experience. Knowledge of Java, C/C++, Object C, PHP, MYSQL, APACHE,
UNIX/LINUX.
*Job Locat... 阅读全帖 |
|
h*****h
发帖数: 1392 | 32 敝公司位於矽谷Sunnyvale，是美國公司，我們現請人做QA Engineer。我們是做home
router/modem的，公司狀況非常好，工作穩定。應聘者必須有足夠網絡方面的知識，並
且勤勉敬業。年資要求不高。有1-3年經驗就好。資深者請另覓他家。New grads如果確
實優秀，也會考慮。公司有Medical/Vision/Dental Insurance。辦H1和綠卡。資深人
士不適合。不能接受平時和週末偶爾加班的人士也不要申請了。根據資歷和knowledge
，時薪從20到25美金不等。有意者請用站內郵箱、站內短信聯絡，或發email到hshensc
@gmail.com。拜託謝謝！
Network QA Engineer
We are looking for a self-motivated and detail-oriented Network QA Engineer.
The candidate will be responsible for testing our networking devices and
will be involved in all aspe... 阅读全帖 |
|
h****y
发帖数: 118 | 33 旧金山湾区Fremont中文幼儿园招聘有经验幼儿教师
幼儿园发展壮大需要干将加盟！
要求: 1.态度积极，工作认真主动，有主人翁意识，喜欢动脑筋，自觉自发解决问题，
为人诚恳踏实，有耐心，喜欢并理解小孩子
2.普通话标准，有一定英文基础，要求有幼儿园老师一年以上实际教学经验，喜欢幼教
事业，并愿意将幼教及相关工作作为长期职业规划。
3.有幼儿园实际教学经验／幼教专业背景／ECE学分／CPR/First Aid 证书持有者优先
3.需要有合法工作身份，欢迎ECE学生和新移民
幼儿园前景广阔，正快速发展，征寻志同道合者携手共进！
有意向者请短信联系510-299-1666 联系人：丁老师
请发简历至：[email protected]
Full-time energetic assistant needed for large, licensed, home-based child
care business in Fremont. (Warm Springs). Seeking someone who is flexible
with a strong work ethic, ... 阅读全帖 |
|
s***y
发帖数: 2607 | 34 LOL
Search Radius at max - 4.0 miles.
243 Tower Structures Detected!
5 New Tower Applications Detected as of 05/03/10!
291 Antenna Locations Found! |
|
b***j
发帖数: 554 | 35 Yes, definitely zero radius single bowl. |
|
K******S
发帖数: 10109 | 36 can't you just buy adjustable nozzles to adjust spray angle and radius? |
|
s*****c
发帖数: 550 | 37 Nice house.
If "比较喜欢新和大一点的房子, COMMUTE的时间不太在乎." then Dublin and
Plesanton are your choice.
I am the complete opposite, got an old house located in 3 miles radius to
most work and shops in Sunnyvale.I can't take 1 hour driving each-way daily.
|
|
m******t
发帖数: 4077 | 38 厨房的柜子，台面和地板都是前一个人选的。不能改变。 搭配什么颜色的家具好看点
呢？照片的颜色有点失真，柜子的颜色挺浅的，厨房台面的颜色也挺浅的。按照
builder给的名称柜子是Concord Maple Suede, 台面是New Venetian Gold with
radius edge. 地板是Butterscotch
谢谢。 |
|
l******e
发帖数: 1875 | 39 在房子的king county 网站上看的，知道啥意思的麻烦指教下
“Legal Description:
XXXX RIDGE LOT ## LESS PORTION THOF DAF: BEGINNING AT MOST WLY CORNER SD LOT
## TH S 14-33-56 E ALONG WEST LINE SD LOT 137.17 FT TO MOST SLY CORNER SD
LOT & PT ON CURVE, CENTER OF WHICH BEARS N 17-45-36 W TH ELY ALONG SOUTH
LINE SD LOT ALONG ARC OF CURVE TO LEFT RADIUS OF 163 FT THRU CENTRAL ANGLE
OF 00-47-50 DISTANCE OF 2.27 FT TH N 15-30-43 W 137.04 FT TO BEG - AS
DELINEATED ON CITY OF XXXXXX LOT LINE REVISION NO 98-004 REC NO 9807299005 ”
... 阅读全帖 |
|
l*****i
发帖数: 265 | 40 看有啥问题没，谢了！
EXTERIOR
3-Side Brick & Stone with Stone or Brick Watertable on all 4 sides
Fiber Cement Siding on Back Side of House
Brick Fireplace Chases with Radius Fireplace Stroud
Vinyl Soffits Wicker Color
Vinyl Windows Tan Color
Screens on All Operable Windows
PPG (Porter Paints) Flat Exterior Paint
Exterior Color Schemes & Front Door Color Options
Columns have Brick or Stone Pedestals with Cedar Corbels (Per Plan)
Trellises, Metal Roof Accents, Shutters or Additional Trim (Per Plan)
8’ Solid... 阅读全帖 |
|
m****a
发帖数: 2593 | 41 You can move it.
http://en.wikipedia.org/wiki/Drain-waste-vent_system
Venting to atmosphere
Most residential buildings' drainage systems in North America are vented
directly through the buildings' roofs. The DWV pipe is typically ABS or PVC
DWV-rated plastic pipe equipped with a flashing to prevent rainwater from
entering the buildings. Older homes may use copper, iron, lead or clay pipes
, in rough order of increasing antiquity.
Under many older building codes, a vent stack, a pipe leading to t... 阅读全帖 |
|
M**I
发帖数: 491 | 42 真是头大，好像把树搞掉也会影响foundation，"rebound" effect.
Trees and How They Affect your Home
One of the great things I like about Houston and the surrounding communities
is abundance of trees and not just one kind of tree but many, many kinds of
trees. But one of the main problems with foundation issues of our homes is
trees and their root system. Trees look great, add to the value of our
property, and provide us shade. Some of the very large trees also can pull
out about 200 gallons of water a day! Maybe yo... 阅读全帖 |
|
w*********a
发帖数: 121 | 43 有道理。不过我们这里小地方，交易量不大。中介找的过去12个月neighborhood
similar size sales不超过10个,过去6个月within 1 mile radius similar size sold
properties 仅有16个，而且conditions, lot size, built year还各有千秋。 |
|
m***y
发帖数: 14763 | 44 这就对了，不过量要大，做菜那种是不够的，用rock salt，化雪的那种。如果根蔓延
很远的话，还要在适当距离上铲断。就是说，在某个radius内，全铺上盐，之外的跟全
铲断。放心，大多数树根都很浅的，你把４寸以内的都断了，其余不足虑也。当然，老
汉一向凡事都过度，自己干的话，同意学术版的博导，都认为１４寸是个合适的尺寸，
当然，４寸也就够了。 |
|
m**********2
发帖数: 6568 | 45 1) depends on the kind of trees (or plants). wisteria, bamboo, very bad.
2) depends on the distance to house. Rule of thumb is >1/2 the maximum
radius of the tree crown at maturity. |
|
u****q
发帖数: 24345 | 46 一定要zero radius turn riding mower。$5k起。 |
|
M*****0
发帖数: 86 | 47 The Nuclear Regulatory Commission defines two emergency planning zones
around nuclear power plants: a plume exposure pathway zone with a radius of
10 miles (16 km), concerned primarily with exposure to, and inhalation of,
airborne radioactive contamination, and an ingestion pathway zone of about
50 miles (80 km), concerned primarily with ingestion of food and liquid
contaminated by radioactivity.[45]
如果房子离核电站15-20 Miles，大家会买吗？ |
|
t**e
发帖数: 1805 | 48 Wrong calculations! The better gauge is to get the average cost per square
ft in the 2-miles radius in the last 3 months. use this average to multiply
the sq ft of subject property. |
|
u****q
发帖数: 24345 | 49 胖哥应该是有zero-radius riding mower的。 |
|
N**s
发帖数: 1916 | 50 there are nuclear power plants within 100 miles radius of the white house.
lol |
|
