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s**3
发帖数: 191
1
来自主题: JobHunting版 - Jobs: Software Engineers in South California
My company in Southern California is hiring 2 Software Engineers now.
Please send me your CV if you are interested. My company will take priority
on internal referrals.
=====================================
Software Engineer
Description
This position requires the candidate to have the skills to design, develop,
debug and test embedded software for a networking switch.
Develop software to interface and control ASICs and other devices, as well
as handling internal and external protocols, to suppor... 阅读全帖
p*****2
发帖数: 21240
2
来自主题: JobHunting版 - 关于尾递归

尾递归
def getHeight(root:TreeNode):Int={
recursion(0,List(root))
}

def recursion(layer:Int, list:List[TreeNode]):Int= list match{
case Nil=> layer
case _ => recursion(layer+1, process(list))
}

def process(list:List[TreeNode]):List[TreeNode]={
var newlist:List[TreeNode]=Nil
for(node<-list){
if(!node.left.isEmpty) newlist=node.left.get::newlist
if(!node.right.isEmpty) newlist=node.right.get::newlist
... 阅读全帖
M******0
发帖数: 29
3
Mitsubishi Electric Research Lab is seeking a highly motivated, qualified
individual to join the Digital Communications group for a 3 month internship
program. The ideal candidate should be able to do research and develop
optimized IPv6 network layer protocols for packet transmission in large
scale low power and lossy networks. The candidate must understand network
layer protocols, especially IETF ROLL and 6LowPAN protocols. Candidate must
also be familiar with NS2 or NS3 simulators. Knowledge o... 阅读全帖
M******0
发帖数: 29
4
Mitsubishi Electric Research Laboratories is seeking a highly motivated,
qualified individual to join the Digital Communications group for a 3 month
internship program. The ideal candidate should be able to do research and
develop optimized IPv6 network layer protocols for packet transmission in
large scale low power and lossy networks. The candidate must understand
network layer protocols, especially IETF ROLL and 6LowPAN protocols.
Candidate must also be familiar with NS2 or NS3 simulators. Kn... 阅读全帖
r**h
发帖数: 1288
5
Yelp这家第一轮HR Screen的时候,HR会问你一些CS方面的基础问题
个人根据自己被问到的经历和玻璃门上的面经总结了一下(实际上没有这么多题不过基
本上都在里面),希望对申请他家的各位有所帮助
1. size of unsigned integer
2. http port no.?
3. ssl full form? (Secure Socket Layer, Encrypt in Transportation layer)
4. use of grep and kill
5. the runtime of adding something to a linked list? O(N)
6. SSL和TLS(Transport Layer Security)的区别:TLS是SSL的升级版(TLS3.0 =
SSL1.0)TLS先handshake再secure
7. hashmaps, DNS(Domain Name System),
8. python native datatypes Boolean, Number, String, Byte, List, ... 阅读全帖
r**h
发帖数: 1288
6
Yelp这家第一轮HR Screen的时候,HR会问你一些CS方面的基础问题
个人根据自己被问到的经历和玻璃门上的面经总结了一下(实际上没有这么多题不过基
本上都在里面),希望对申请他家的各位有所帮助
1. size of unsigned integer
2. http port no.?
3. ssl full form? (Secure Socket Layer, Encrypt in Transportation layer)
4. use of grep and kill
5. the runtime of adding something to a linked list? O(N)
6. SSL和TLS(Transport Layer Security)的区别:TLS是SSL的升级版(TLS3.0 =
SSL1.0)TLS先handshake再secure
7. hashmaps, DNS(Domain Name System),
8. python native datatypes Boolean, Number, String, Byte, List, ... 阅读全帖
m**********o
发帖数: 63
7
课程是:Multimedia Quality of Service Networking,要写survey paper。
以下为topic:
1.Traffic characteristics of multimedia (e.g., H.265 and H.264 SVC
encoded video/audio streams)and 3D video the relationships to the media
quality
2. Caching and object replication for multimedia content distribution (
including push vs. pull)
3.Session set-up/teardown protocols for multimedia streaming, e.g., SIP,
SAP, SCTP.
4. Control protocols for multimedia streaming, e.g., RTP/RTCP, RTSP.
5. Determining network ... 阅读全帖
M******0
发帖数: 29
8
MERL is seeking a highly motivated, qualified individual to join the
Electronics and Communications group for a 3 month internship program. The
ideal candidate should be able to do independent research and develop energy
efficient IPv6 network layer technologies for packet transmission in large
scale low power and lossy networks. The candidate must understand network
layer protocols, especially IETF ROLL and 6LowPAN protocols. Candidate must
also be familiar with NS2 or NS3 simulators. Knowledge... 阅读全帖
z*****u
发帖数: 51
9
来自主题: JobHunting版 - 新鲜C3 energy面经
我当时用的是layer by layer的遍历,如果发现他们是兄弟,直接返回false. 如果发
现不是兄弟而且在同一个layer,则count++,如果count==2,则返回true. 否则返回
false
g******5
发帖数: 4
10
We are looking for researching, defining and developing innovative
technologies and engineering ideas as well as prototypes for future network
solutions including cloud network switches and cloud computing technologies.
We are looking for staff/senior staff research engineer depending on level
of experience, the successful candidate will be responsible for leading team
efforts as well as providing technical expertise in software development,
network technology, network standardization and vendor... 阅读全帖
w****a
发帖数: 710
11
Big data, principles and best practices of scalable realtime data systems
推荐这本书,storm的作者写的,以前是twitter的大牛,后来离职自己创业了。
这书大意是讲解如何以三层架构(batch layer, serving layer, speed layer) 来设
计一个支持near real time计算的分布式项目。
作者用一个简单的例子贯穿全书,有理论讲解也有部分内容的implementation。
全书仅仅300页,深入浅出,浅显易懂,即使对分布式没什么了解也可以无障碍阅读。
我几乎是一口气读完的。
b**********5
发帖数: 7881
12
class Product {
uuid
List pictures;
List merchants;
// and a list of other meta data for this product, probably like
category...
}
each product will have a uuid as prime key. list of pictures, specified by
picture's uuid. list of merchants, specified by merchant's uuid
一个product page上, 其实会有很多API。 拿到了product class后, 通过picture
的uuid, 去call getThumbnail(pictureuuid)... 通过merchant id和product id,
可以link到某个merchant selling that product的product page
suggest product其... 阅读全帖
m********u
发帖数: 3942
13
公司为全球领先的信息与通信技术(ICT)解决方案供应商,薪资丰厚,工作地点
bellevue,WA
有兴趣的同学可以站内信或者发邮件:[email protected]/* */
Desired Skills and Experience:
4+ years experience in web design and development, with emphasis on
developing visual graphical solutions.
Proficiency with JavaScript, HTML5/CSS3, Angular, SVG graphics and SVG
libraries (D3, etc.).
Strong algorithmic background for graphic manipulations
Solid experience with web backend programming such as REST service, data
access layer, cache layer, etc.
Familiarity ... 阅读全帖
y*******d
发帖数: 1674
14
来自主题: JobHunting版 - 求安慰。airbnb的bar真的好高
lz是女生,有几年工作经验。java开发,前后端经验都有。(我是想说请不要散布什么
airbnb是个女生就要的谣言,我感觉对女生bar也蛮高的。)
因为在外地,电面两轮,有一轮还是新题,也写出来了,反馈说很strong
onsite两道coding都写出来了。有一题最后只有几分钟让我写附加题,意思还没理解清
楚,但还是写了,写完发给面试官邮箱。但后来意识到附加题写错了,但前面都写得很好
第二个coding写完还有15min 面试官问我怎么打算 我说再来一题?他说不用了 带我去
喝coffee
culture fit也聊的很开心。我感觉自己发挥的很好。
architecture那个感觉不是要我设计scalability,就是围绕数据库做设计,logic
layer面试官也不关心,我几次扯到logic layer又被扯回来,直接考虑data layer,很
多数据库的设计,其实我基本的答出
来了,但有些地方估计他不满意吧。而且估计没太多时间讨论进一步的features。看他
不停在看表
recruiter的反馈就是有一轮coding和archiecture,我猜就这里栽了。recruite... 阅读全帖
y*******d
发帖数: 1674
15
来自主题: JobHunting版 - 求安慰。airbnb的bar真的好高
lz是女生,有几年工作经验。java开发,前后端经验都有。(我是想说请不要散布什么
airbnb是个女生就要的谣言,我感觉对女生bar也蛮高的。)
因为在外地,电面两轮,有一轮还是新题,也写出来了,反馈说很strong
onsite两道coding都写出来了。有一题最后只有几分钟让我写附加题,意思还没理解清
楚,但还是写了,写完发给面试官邮箱。但后来意识到附加题写错了,但前面都写得很好
第二个coding写完还有15min 面试官问我怎么打算 我说再来一题?他说不用了 带我去
喝coffee
culture fit也聊的很开心。我感觉自己发挥的很好。
architecture那个感觉不是要我设计scalability,就是围绕数据库做设计,logic
layer面试官也不关心,我几次扯到logic layer又被扯回来,直接考虑data layer,很
多数据库的设计,其实我基本的答出
来了,但有些地方估计他不满意吧。而且估计没太多时间讨论进一步的features。看他
不停在看表
recruiter的反馈就是有一轮coding和archiecture,我猜就这里栽了。recruite... 阅读全帖
i********d
发帖数: 8
16
Optical Communications Job Description
Member Research Staff
Digital Communications Group
MERL is seeking a highly self-motivated, qualified researcher to join our
team to perform cutting-edge research in the area of optical communications
systems. The candidate is expected to have a strong background in the
research, advanced technology development, simulation and experimental
verification of next generation optical communication systems at the
physical layer. Extensive knowledge of digital coh... 阅读全帖
M******0
发帖数: 29
17
Mitsubishi Electric Research Lab (MERL) is seeking a highly motivated,
qualified individual to join the Digital Communications group for a 3 month
internship program. The ideal candidate should be able to do research and
develop optimized IPv6 network layer protocols for packet transmission in
large scale low power and lossy networks. The candidate must understand
network layer protocols, especially IETF ROLL and 6LowPAN protocols.
Candidate must also be familiar with NS2 or NS3 simulators. Know... 阅读全帖
m****s
发帖数: 18160
18
来自主题: JobMarket版 - PhD opportunity available at Missouri S&T
【 以下文字转载自 ME 讨论区 】
发信人: ltx8 (rug bear), 信区: ME
标 题: PhD opportunity available at Missouri S&T
发信站: BBS 未名空间站 (Sat Mar 23 15:49:34 2013, 美东)
PhD opportunity available at Missouri S&T. The project will focus
"Control of Additive Manufacturing Processes".
Project details are listed below:
Drs. Bristow and Landers at Missouri S&T have a project funded by the
National Science Foundation on the control of Additive Manufacturing (AM)
processes. This research seeks to create and analyze a Repetitive P... 阅读全帖
t*********r
发帖数: 15
19
来自主题: JobMarket版 - Java Job Openings (Media, PA)
My company is looking for full time Junior (0-4 yrs) to Senior (4+ yrs) Java
developers. The jobs are located at Media, PA. See details for Job
responsibilities below. If you are interested, please mail your resume to me
. Thanks.
Responsibilities:
- Our Software Engineers work on multiple project developing web-based
applications using Java and open source technologies (Java, Spring,
Hibernate, Struts, SQL, Web Services, Tomcat, Ant).
- Develop and maintain quality code, perform unit testing a... 阅读全帖
t*********r
发帖数: 15
20
来自主题: JobMarket版 - Java Job Openings (Media, PA)
My company is looking for full time Junior (0-4 yrs) to Senior (4+ yrs) Java
developers. The jobs are located at Media, PA. See details for Job
responsibilities below. If you are interested, please mail your resume to me
. Thanks.
Responsibilities:
- Our Software Engineers work on multiple project developing web-based
applications using Java and open source technologies (Java, Spring,
Hibernate, Struts, SQL, Web Services, Tomcat, Ant).
- Develop and maintain quality code, perform unit testing a... 阅读全帖
M******0
发帖数: 29
21
Mitsubishi Electric Research Labs (MERL) is seeking a highly motivated,
qualified individual to join the Electronics and Communications group for a
3 month internship program. The ideal candidate should be able to do
independent research and develop energy efficient IPv6 network layer
technologies for packet transmission in large scale low power and lossy
networks. The candidate must understand network layer protocols, especially
IETF ROLL and 6LowPAN protocols. Candidate must also be familiar w... 阅读全帖
j*****h
发帖数: 3292
22
来自主题: Living版 - 求问drywall 刷漆的步骤
看来得多刷几遍
http://en.wikipedia.org/wiki/Primer_%28paint%29
Using a primer on wood before painting is mandatory for several reasons.
First of all, wood is very porous and will absorb the solvent from paint,
drying the paint prematurely. Because most paints undergo chemical reactions
during the process of curing (for example, latex and alkyd-based paints
actually polymerize when curing), they depend on water or solvent being
evaporated slowly rather than being absorbed quickly by the underlying
mater... 阅读全帖
z****e
发帖数: 555
23
来自主题: Living版 - roof
Hi:
This is a 27-year old house. The seller told us that roof was redone about 7
-10 years ago. Inspector found that there are two layers on the roof, which
suggested that they added additional layer on top of original layer.
I called town office today. She told me that there is no record of roof
permission in file. But she also said many people redo the roof without
applying for permission.
What will this affect my house value? I will have to redo roof about in 10
years. I wonder if I should as... 阅读全帖
s***y
发帖数: 3299
24
来自主题: NextGeneration版 - 为我家湿疹宝宝发包子喽
I noticed your baby wears two layers. Don't know the temp in your home. From
my experience, if my son wears more than one layer at room temp 70F, his
eczema will come back.
Put more moisturizer on the face. I have to use CeraVe first then Aquaphor
the 2nd layer for maximum protection and controling the eczema (knock the
wood, peng peng!)
S******1
发帖数: 1831
25
来自主题: NextGeneration版 - 关于Epidual Procedure
产科上讲,Epidual是注射到脊柱外面的一层叫Epidual layer的空间,再往里是Spinal
layer (剖的话麻药就打在这一层),再往里好像是骨髓。于是,LD问老师麻醉师怎么
知道是不是刚好扎到该去的那一层,老师说扎到Epidual layer的时候会有一定的
resistance,麻醉师凭needle碰到的resistance来判断,当然运气不好万一扎过了,会
有spinal fluid流回针管,这样麻醉师就知道扎过了。万一扎过了,麻醉师会当场告诉
你,因为会导致产后24小时sever headache。
LD噗哧一笑看着我“呵呵,全凭手气。。。”
az
发帖数: 16686
26
来自主题: NextGeneration版 - 推荐一个保湿的Desitin油
你朋友弄错了
蓝瓶的不就基本是氧化锌吗?不是物理方法隔离的嘛?好像院长科普过了吧,随便用,
想用多少用多少的吧,是不是你朋友听错医生的意思了啊,不管是diaper rash或者湿
疹,都不用抗生素的吧,又不是yeast之类的吧。这个说法倒真是闻所未闻的,你瞧瞧
蓝瓶的成分列表吧,不晓得那个是抗生素
DESITIN® Rapid Relief Cream – Ingredients
DESITIN® Rapid Relief Cream is formulated with 13% zinc oxide, aloe,
and vitamin E.
Zinc oxide, the active ingredient in DESITIN® Rapid Relief Cream, is a
skin protectant. It provides protection by forming a protective barrier on
skin, preventing wetness and other irritants from reaching the ... 阅读全帖
U*******n
发帖数: 251
27
来自主题: NextGeneration版 - 哪里有卖很厚很暖和的睡袋?
Did a research online and here's the FAQ for baby in a bag:
- Why are sleep sacks sleeveless? Won't my baby get cold?
Baby Blankets don't have sleeves either! The armholes allow for free
circulation of air flow- something essential to prevent the dangerous
overheating of your baby. Simply put your baby to bed in the appropriate
garment for the season- winter blanket sleepers for cooler weather or
lightweight pajamas for summertime. Baby in a Bag™ is not a garment,
but simply complements wh... 阅读全帖
e**a
发帖数: 526
28
来自主题: NextGeneration版 - NYC Queens 法拉盛 家具甩卖 (转载)
【 以下文字转载自 NewYork 讨论区 】
发信人: euca (dekalb), 信区: NewYork
标 题: NYC Queens 法拉盛 家具甩卖
发信站: BBS 未名空间站 (Mon Jan 11 06:38:14 2016, 美东)
WE are moving out of NYC and selling all furniture/fixtures.
No Scams, All item in a single home in Flushing Area, Local Pick Up only
Price / picture is listed
Discount available upon purchasing bulk/multiple items
Call/ TXT 2O1 344-l77l for details and time.
4 layer drawer $45
2 layer drawer with child safe $50
Ikea Shoe Rack, like new, $40
Staples Premium Adjustable ... 阅读全帖
l*******a
发帖数: 438
29
You're a great mom!
To answer your question about dairy product intake: why not take cheese to
school for lunch?
I strongly suggest mini "babybel" cheese.
http://www.bel-uk.co.uk/mini-babybel.asp
It has a thick layer of wax to protect the freshness of the cheese inside.
The legend is that sailors who are far at sea eat such cheese due to the
protective layer and freshness of the cheese.
And children very much enjoy the ceremony of opening the package and
breaking the wax layer. You can find "ori... 阅读全帖
P*********d
发帖数: 4064
30
This is a typical sanwich type of letter.
first layer of bread: nice boy
middle layer of meat: chatty and needs to put more details in writing
last layer of bread: He's been doing well.
The meat is where you need to pay attention to. For a third grader, being
chatty is a concern. For boys, writing is a common concern.
no big deal, just work on those issues bah.

be
on
any
I
the
l******a
发帖数: 16364
31
☆─────────────────────────────────────☆
DarkMatterER (小黑大妈) 于 (Thu Mar 15 15:12:24 2012, 美东) 提到:
哪个更健康一些?
娃现在9点多到校,11点半12点的样子吃午饭。
我目前是把饭菜放在普通小饭盒里,早晨拿给老师放微波炉旁边,这样中午她们会记得
帮忙热。
但是他们市内温度很高,打了暖气,小孩都穿单层那样。
我的饭菜经常是剩的,从冰箱拿出来的,然后就那么在室内放着,总觉得不够卫生。
我也想过放午餐袋,放冰袋,放走廊的架子上,大部分别的孩子也这样的,但是我娃还
没学会跟老师讲要热饭,他爸爸送时忘了这么做,娃中午的饭只碰了一点就都带回来了
,最爱吃的排骨也没动,凉的确实没法吃啊。我也在教,可是教会之前不能让娃饿肚子
啊。
其他孩子有人就带三明治和饼干,有人是保温盒。
我给娃买过一个桶装的保温盒,从里面掏东西着实费事。现在有点想买那个日本的两截
的保温盒,家里有俩大人的了,给娃买个小的,虽然贵点也咬牙了。
说是可以保温6小时,我想早晨把盒子用开水烫过,然后放了没动过的微波加热的冷菜
or现炒的... 阅读全帖
g********e
发帖数: 1638
32
213 张韵
(CS, CVD) 男 1982/09/22 中国科学院半导体研究所 工程与材料科学
2011年07月毕业于[美国]佐治亚理工学院 [美国]高平公司 工艺研发工程师
/Process Development Engineer
个人linkedin信息:
http://www.linkedin.com/pub/yun-%E5%BC%A0%E9%9F%B5-z/13/ab2/7b3
博士老板的主页bublicaion:
http://users.ece.gatech.edu/~shensc/publications.html
其中属于本千青的文章只有:(只有一个APL还OK)
S.-C. Shen, Y. Zhang, D. Yoo, J. Limb, J. Ryou, and R. D. Dupuis, "
Comparison of GaN avalanche photodiodes fabricated on SiC and GaN substrates
," ECS Transactions, vol. 11, ... 阅读全帖

发帖数: 1
33
来自主题: Returnee版 - 中国骨干人才正在流失海外
12月27日 为什么我要替中国辩护
我要替中国辩护,并不是因为我是一个中国人,而是因为我知道中国就和这世界上绝大
数的国家一样,虽然有很多丑陋的现象,但是他们是受害者。就
象这个犯罪集团里很多的人一样,他们来自各种种族,他们可能充当了工具,但他们不
是制造这一切,谋划这一切的人。虽然经常会暴露中国产品出现问题。但要知道中国是
世界工厂,他们只是打工者,他们只是按照各种雇主提供的配方来生产,他们并不知道
他们会产生怎样的后果。或者这些工人知道后果,但他们只是奴隶,他们又如何去改变
这一切? 所以,当我的调查不断往前推进的时候,不可避免地会涉及各国的企业,但
这并不表明是针对这个国家或这个国家的人民,而是针对一种社会现实和丑陋现象。就
拿菲律宾来说,菲律宾是一个犯罪猖獗的国家,有很多犯罪分子,但是菲律宾人民却是
这个集团的受害者,他们/她们被绑架,沦为了牺牲品,人体实验对象。一个日本人,
强奸上千名菲律宾女孩,却没有受到惩罚。以前我也提到过,有20个国家的名单,这20
个国家的人民其实都是受害者。现在他们把矛头对准中国,或许仅仅是因为我揭示了他
们图害世界人民的内幕,而我是一个中国人的缘... 阅读全帖
d********0
发帖数: 5142
34
你忘了,我拿过3个专业的学位了,你还忘了,EE做到最后就是数学。
孩子, 你大姐我的paper是在美国国防方面的会议发表过的。那个会议叫milcom,是MIT
organize的。也发过Infocom的paper。
我做过的研究是跨越 physical layer,mac layer 和 cross-layer的设计。
第一次接触这方面的题目的时候,专门研究过能量消耗这部分的。
你知道的这点东西,在我这,nothing.
c*********p
发帖数: 3217
35
来自主题: Stock版 - 这个电源技术怎么样。。。
Intertek rigorously tested four 1500 volt and one 2000 volt 8-layer
robotically produced
polypropylene injection molded samples of EEStor’s capacitor technology
across multiple voltages.
Intertek has confirmed that significant improvements were achieved over the
previously tested and
reported 750 volt, hand built six-layer injection molded prototype.
Key highlights and findings of the Intertek Phase 3 Report include:
• An eight layer stack, rated at 2000 volts, was successfully tested
up t... 阅读全帖

发帖数: 1
36
来自主题: Stock版 - MU 咋了?
我不光拜读了这篇文章,还看了文章下方那两个打脸的评论
------------------------------------------
I only take predictions from the companies themselves serious; if they
predict the Q4 looks bright and 2018 as well I do give them the benefit
above analysts. I this analyst has the stock on hold since it was $10 .With
a forward PE of about 13 I do believe this stock is really cheap seeing the
upside.The rotation was sometimes going to companies with a high multiple (
PE) and low growth, even in the future.
-----------------... 阅读全帖
a******e
发帖数: 36306
37
来自主题: Working版 - job openings at MERL
【 以下文字转载自 EE 讨论区 】
发信人: jianghe (江河), 信区: EE
标 题: job openings at MERL
发信站: BBS 未名空间站 (Tue Aug 9 15:03:19 2011, 美东)
http://www.merl.com/employment/employment.php
Member of Research Staff
Digital Communications
MERL is seeking a highly self-motivated, qualified researcher to join our
dynamic team to carry out fundamental and applied research in the area of
advanced power electronics. The ideal candidate should have a strong
background in the research, simulation, design of advanced power electr... 阅读全帖
u**e
发帖数: 177
38
来自主题: Working版 - 该不该跳
This should not be the reason that your boss didn't give you that manager
position. If you made it clear to your boss that you wanted to be a manager,
he should give you this opportunity. Manager track is rewarded better than
technical track, in terms of base salary, bonus, and equity. From this point
of view, he did you a big disfavor. Normally directors manage managers, and
managers manage technical staff. It's apparent that your current boss wants
to layer things up and legitimate himself by ... 阅读全帖
p**f
发帖数: 2610
39
I recently replaced all floor in my bathroom. They are two different
layer boards. Lower layer is much thicker 1.5" OSB. Upper layer is
1/2" plywood.
I guess the confusion comes from the different terms, in our area, we
called them subfloor and construction floor among the construction
workers. But I just googled it, it is typically called finished floor
and subfloor. Whatever, you know what I am talking about.
Of course you can customize your floor as long as it complies to the
building code
K****n
发帖数: 2485
40
来自主题: LosAngeles版 - 想换单反相机了,请推荐一款
我刚仔细看了canon XSi拍出的照片,也是色调偏红
好像这是C家的特点,他们所有相机都偏红,所以在dpreview网站对T2i(550D)的介绍
里还特别强调了,他们针对这个问题做了一些改进
Typically, metering sensors are more sensitive to red subjects which can
lead to overexposure. The EOS 550D combats this with the dual layer sensor,
which has one layer sensitive to red and green light and one that is
sensitive to blue and green light. The metering algorithm then compares the
level of the two layers and adjusts the meter reading accordingly.
http://www.dpreview.com/reviews/CanonEOS5
g******u
发帖数: 3060
41
来自主题: LosAngeles版 - 日本机器人
Just googled and found this post.
http://www.physicsforums.com/showthread.php?t=111717
Seems like EMI does affect less than 'ionized radiaion'. And millitary does
use special semiconductor materials.
Although proper shielding should take care of this I suppose, ain't no
eletromagnetics expert myself either.
"
When gamma rays pass through a substance, they leave behind ions when they "
kick" electrons out of their bound states by interacting with the electrons.
This is why gamma and x-rays get th... 阅读全帖
z*********n
发帖数: 94654
42
来自主题: LosAngeles版 - 尿色了又
今天看窗外,又一片尿色,惨不忍睹
昨天依然clean clear,远山白云十分美丽
有人总喜欢拿marine layer当借口,其实,就是前几天那么蓝天白云的时候,大海那边
也是尿黄色
那个才是marine layer呢
单位窗口望出去对面的远山,那是内陆啊,真不完全是marine layer,真的是污染
我们单位稍微年纪大点的都说70年代更厉害
cal tech上学的学生看不到北边就是山,偶尔刮大风刮开污染了,有的学生和新大陆似的
原来那边是山
自从smog check以来才开始逐渐变好
但洛杉矶smog依然厉害
z*********n
发帖数: 94654
43
来自主题: LosAngeles版 - 单位有个污染专家给我解释了
现在窗外洛杉矶整个雾蒙蒙的,脏兮兮的感觉,很典型。因为这几天连续其实就是接近
夏天的气温也没雨。洛杉矶这种天气就这状况
单位午饭聊天,有个哥们号称之前就是在NASA工作专门研究空气污染的,我问他,你说
这是marine layer还是smog
他说:
both, smog往往也是在marine layer的时候最严重,有载体云云
所以,老拿marine layer当挡箭牌的,也很苍白,呵呵
洛杉矶就是鸡头凤尾,跟美国比污染最厉害,跟天朝比,毛毛雨拉,闻闻smog,怀念怀
念家乡拉,哈哈哈
s*******s
发帖数: 9926
44
来自主题: LosAngeles版 - 没人讨论今天的空气吗
其实很多误以为smog都是marine layer
是加州的自然现象
從北加到南加都很普遍
LA因为地球自转 海风带来太平洋水气多 Marine Layer现象很重
有看美国气象多会知道
那主要是marine layer 是一种自然现象
太平洋的水气 地球自转吹向陆地
不懂就自己wikipedia一下
这不论在北加南湾还是南加都非常明显
看起来白白的 但这和大陆的烟雾还是有差的
其实很多人包括美国外地人都分不清楚这些差别
看本地美国气象常会讲到
洛杉矶的空气在世界比起来
并不算差的 和国内比起来更是天差地远
如果拿LA和巴黎来比好了很多很多
大城市空气糟一些是应该的 但医学技术好 医疗资源丰富
空气人多的地方总是比不上乡下地方
但也不需要过度反应
美国空气没有那么差
obama已经制定了强制的法律汽车油耗要快速逐年减少
http://www.whitehouse.gov/the-press-office/2012/08/28/obama-adm
现在hybrid, electric, hydrogen汽车逐渐流行
电动车也逐渐上路
空气只会越来越好
WHO | World Health... 阅读全帖
s*******s
发帖数: 9926
45
来自主题: LosAngeles版 - 这几天的确是雾霾天啊
其实很多误以为smog都是marine layer
是加州的自然现象
從北加到南加都很普遍
LA因为地球自转 海风带来太平洋水气多 Marine Layer现象很重
有看美国气象多会知道
那主要是marine layer 是一种自然现象
太平洋的水气 地球自转吹向陆地
不懂就自己wikipedia一下
这不论在北加南湾还是南加都非常明显
看起来白白的 但这和大陆的烟雾还是有差的
其实很多人包括美国外地人都分不清楚这些差别
看本地美国气象常会讲到
洛杉矶的空气在世界比起来
并不算差的 和国内比起来更是天差地远
如果拿LA和巴黎来比好了很多很多
大城市空气糟一些是应该的 但医学技术好 医疗资源丰富
空气人多的地方总是比不上乡下地方
但也不需要过度反应
美国空气没有那么差
obama已经制定了强制的法律汽车油耗要快速逐年减少
http://www.whitehouse.gov/the-press-office/2012/08/28/obama-adm
现在hybrid, electric, hydrogen汽车逐渐流行
电动车也逐渐上路
空气只会越来越好
WHO | World Health... 阅读全帖
s*******s
发帖数: 9926
46
来自主题: LosAngeles版 - 今天的空气质量预报
其实很多误以为smog都是marine layer
是加州的自然现象
從北加到南加都很普遍
LA因为地球自转 海风带来太平洋水气多 Marine Layer现象很重
有看美国气象多会知道
那主要是marine layer 是一种自然现象
太平洋的水气 地球自转吹向陆地
不懂就自己wikipedia一下
这不论在北加南湾还是南加都非常明显
看起来白白的 但这和大陆的烟雾还是有差的
其实很多人包括美国外地人都分不清楚这些差别
看本地美国气象常会讲到
洛杉矶的空气在世界比起来
并不算差的 和国内比起来更是天差地远
如果拿LA和巴黎来比好了很多很多
大城市空气糟一些是应该的 但医学技术好 医疗资源丰富
空气人多的地方总是比不上乡下地方
但也不需要过度反应
美国空气没有那么差
obama已经制定了强制的法律汽车油耗要快速逐年减少
http://www.whitehouse.gov/the-press-office/2012/08/28/obama-adm
现在hybrid, electric, hydrogen汽车逐渐流行
电动车也逐渐上路
空气只会越来越好
WHO | World Health... 阅读全帖
z*********n
发帖数: 94654
47
来自主题: LosAngeles版 - 采访一下真男人搬到北加感受如何
marine layer 在北加也有的,呵呵
以前jobhunting有人就提到过,说没下飞机就看到黄黄的空气就不想去了,呵呵
当然marine layer未必是因为污染
南加的情况是,marine layer外加污染both 存在
l******7
发帖数: 2234
48
driveway本来是水泥的。前任屋主把driveway弄得坑坑包包的,到处都是小坑洼,不平
整。下雨就到处是小积水。另外他们卖房子的时候,图省事省钱,就凑合着找劳模喷了
薄薄一层沥青,想一抹黑遮丑。结果,到我们手上后,经过一轮的春夏秋冬,表面的沥
青涂层因为热胀冷缩,都开始松脱剥落了,看着特恶心。现在路面就是黑黑白白的,斑
点状,特丑。
现在夏天了,想把driveway翻新。弄沥青还是水泥?
明州的水泥路,报价一般在多少(网上说$5-10/square feet )? 沥青的价位区间?
我看网上介绍说,寒冷地区,沥青路面似乎更适合一些。因为水泥路面,受热胀冷缩,
物理变形得厉害,裂缝很明显。另外北方地区冬季都要撒化雪盐,会损毁水泥面。 沥
青则没有这方面的问题。而且化雪盐不破坏沥青路面。还有就是沥青路面,吸收太阳热
能,在冬季下雪的时候,沥青路面化雪的速度,比水泥快很多。最后一个好处,沥青的
施工费用比水泥便宜很多,35-50%不等。而且数年后翻新的话,沥青只需要翻新top
layer重铺, base layer and middle layer都不用动。这样以后维护翻新的成本大大
... 阅读全帖
l*******s
发帖数: 26303
49
来自主题: NewJersey版 - 问一个纯技术性问题
买买提的形象系统是用layer做的,衣服都是一层层的layer,网速慢的时候衣服那层
layer还没loading进去,理论上说裤子也是一样的道理,你下次仔细观察观察吧。
w*********4
发帖数: 22
50
一月底彻底回国了,现在开始卖东西,north jersey, 07031, 大家感兴趣请打551-580
-2086,站内发信或者email到a*****[email protected]都可以(可以发照片)
2006 Ford Fusion S (67K miles, 2.3L 4-Cyl, black) $7,700
32'' Polaroid LCD TV $50
40'' Sony Bravia LCD TV $250
kenmore portable refrigerator $40
GE air conditioner $25
Kenmore conditioner $40
Portable air conditioner $50
honeywell air filter $30
Cooling air fan $5
hoover vaucum $50
2x Floor Lamps $5
Desktop lamp $5
DVD player $5
HP LaserJet P1005 Printer $15
HP All-in-one InkJet Printe... 阅读全帖
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