s******v
发帖数: 4495 | 1 当然有用！比方说，你们女生说，开车的时候没法看路，那是因为小脑不够熟练，不得
不让大脑参与，所以大脑就没有bandwidth去看gps或者路牌了。
还有你们做菜的时候，可以看电视，打电话，为什么？因为你们做菜，已经熟练到，完
全由小脑控制，不是大脑在参与 |
|
m***e
发帖数: 810 | 2 一台dell 台式机，具体配置忘了，是一年多前买的。一个21寸regular LCD，一个23寸
widescreen LCD。还有一个Laptop。Full bandwidth时laptop 用来监视上证指数，
widescreen用来看大智慧的多股显示（昨天看一个个小窗口的脉冲还是很爽的）。还有
一个LCD用来上网，交易和看技术指标。有时候LD要看pps 什么的，两个窗口也够用了
。感觉硬件凑合就行了，网速比较重要，昨天刚刚upgrade 到10M的Cable Modem。 |
|
g***s
发帖数: 3811 | 3 Lenovo - G500 59399508 427.99
Product Total: $399.99
Shipping: $0.00
Sales Tax:$28.00
Order Total:
$427.99
Product Features
15.6" display
Typical 1366 x 768 HD resolution. Energy-efficient LED-backlight.
3rd Gen Intel® Core™ i5-3230M processor
Smart dual-core, four-way processing performance. Intel Turbo Boost
Technology delivers dynamic extra power when you need it, while increasing
energy efficiency when you don't.
4GB system memory for basic multitasking
Adequate high-bandwidth RAM... 阅读全帖 |
|
f***7
发帖数: 46 | 4 我正在做一个e-commerce 的网站. 试过了YAHOO SMALL BUSINESS, GO DADDY E-
COMMERCE, AND VOLUSION. 都不满意, 大侠们能推荐一个好的平台吗? 最好自己用过的.
要求:
batch upload and edit using csv files.
batch upload pictures
>99% availability
reasonable fee for 1000 products and 5GB bandwidth
provide order data export
provide quantity discounts
show total price including shipping fee for customers based on zip codes
optional
build-in integration with ebay,amazon, and stamps.com |
|
V******i
发帖数: 306 | 5 俺觉得哪怕是reviewer没仔细看proposal说错了，都起码还有个出发点。现实中俺碰见
reviewer几乎只看个title就写评语，写出来的评语和俺第一页的东西都可以直接矛盾
。当然，以前几次俺总觉得是俺没有精雕细琢，惹恼了reviewer。这次可是3个人一起
写的，大家都认为非常完美。语言也有合作者把关。照理至少达到的高度是俺独立的
proposal无法达到的。结果照样是一个下场。还有个reivewer说俺们只研究了
communication bandwidth，没有讨论communication power。看着让人觉得无论怎么改
都是个运气问题。 |
|
|
z*y
发帖数: 1311 | 7
well
because there is nothing fancy, no figure, no photo, no pictorial graph
text is the plainest way to convey information
no need to save on file and attach
no need for receiver to download and view
take less storage space
take less bandwidth to transmit
save the earth, will ya
but that is not the point
how difficult is it for this fat creature to copy&paste
and generate a PDF or DOC by herself while she is sitting there
doing almost nothing |
|
T**********y
发帖数: 157 | 8 http://www.ccse.uestc.edu.cn/teacher/teacher.aspx?id=414
所有已经发表论文清单
（发表时间序）
【1】 周涛，傅忠谦，周佩玲，张建荣，张德学，”基于遗传算法的大规模流量
工程问题求解”，计算机应用，2003年第6期，43－45
【2】 杨春霞，周涛，周佩玲，刘隽，基于Multi_Agent的股市经济系统建模与
分析，自动化理论、技术与应用卷十，中国科学技术大学出版社，2003年，596-601（
中国自动化学会第18届青年学术年会会议论文集）
【3】 周佩玲，许民，赵亮，周涛，”混沌信号奇异性检测与外界冲击度量”，
数据采集与处理，Vol.19，195-198，2004
【4】 周涛，徐俊明，刘隽，”图直径和平均距离极值问题研究”，中国科学技
术大学学报，Vol.34，410-413，2004
【5】 周佩玲，杨春霞，周涛，李立文，”虚拟股市建模与混沌分析”，中国科
学技术大学学报，Vol.34，442-448，2004
【6】 T. Zhou, P. ... 阅读全帖 |
|
o*******s
发帖数: 1375 | 9 professor 和 technician 都榜上有名.
http://finance.yahoo.com/news/least-stressful-jobs-for-2013-162
1. University Professor
Median Salary: $62,050
And the winner of Least Stressful Job of 2013 is … university professor!
(Cue the commencement music.)
Professor is a newcomer to the list this year, and it shot straight to the
top.
"If you look at the criteria for stressful jobs, things like working under
deadlines, physical demands of the job, environmental conditions hazards, is
your life at risk, are y... 阅读全帖 |
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s******y
发帖数: 28562 | 10 革命了革命了！
今天收到NIGMS director 的公开信，里面明白着说单个实验室不应该拿到超过三个R01
（除非是clinical research), 并明白指出这个动向的原因是：
1。在钱的总数有限的情况下，一个实验室拿到多的钱就会导致另外一个实验室拿到的
钱变少。
2。大实验室对博士后和研究生培养不利，因为导师的注意力被分散了。
3。从统计上来看，大实验室的成果并不和资金成正比
A Shared Responsibility
Dr. Jon LorschPosted by Dr. Jon Lorsch on January 5, 2015
Post a Comment
The doubling of the NIH budget between 1998 and 2003 affected nearly every
part of the biomedical research enterprise. The strategies we use to support
research, the manner in which scientists conduct resea... 阅读全帖 |
|
a********e
发帖数: 25 | 11 Sorry I don't have Chinese input on this machine.
I'm from Beijing.
My father works in SINOPEC as a normal engineer, and my mother is a staff in
a college. Their salary is about 1w/month (6k+4k) in total.
I think the life of my family is okay. My parents usually go to "早市" to
buy veges and meats once a week, and go to supermarkets to buy other foods
and living necessities. I beleive they don't spend over 1500rmb on food each
month. Of course they can have free or very cheap lunch at work. But s... 阅读全帖 |
|
g***s
发帖数: 3811 | 12 Lenovo - G500 59399508 427.99
Product Total: $399.99
Shipping: $0.00
Sales Tax:$28.00
Order Total:
$427.99
Product Features
15.6" display
Typical 1366 x 768 HD resolution. Energy-efficient LED-backlight.
3rd Gen Intel® Core™ i5-3230M processor
Smart dual-core, four-way processing performance. Intel Turbo Boost
Technology delivers dynamic extra power when you need it, while increasing
energy efficiency when you don't.
4GB system memory for basic multitasking
Adequate high-bandwidth RAM... 阅读全帖 |
|
c******e
发帖数: 111 | 13 Hi
I've got a system set up with Verizon FIOS (with their wireless router)
I have a NAS and I ripped CDs with AIFF format. When I use Sonos to stream
the music via home network to my NAIM DAC however, the speed was very bad...
there are at least two hiccups during each song.
What should I do to improve my home network speed(bandwidth??)? Thank you. |
|
a*****s
发帖数: 2663 | 14 It's a matter of bandwidth! Optical/Coax digital is only capable of TWO
channels of LPCM streams while HDMI can handle 8 channels of LPCM. But you
can't just say Optical/Coax digital is lossy. |
|
d******0
发帖数: 22800 | 15 amazon上93刀 E9
http://www.amazon.com/FiiO-Desktop-Headphone-Amplifier-Dock/dp/
“E9 uses TI OPA2134 op amps and the TI TPA6120 for the output buffer. The
OPA2134 is optimized for audio use and has impressive specs. The TPA6120 is
marketed for headphone applications and offers high power, high current,
extremely low distortion and wide bandwidth. It’s a stereo IC with both
channels on a single surface mount IC with a large heat sink pad on the
bottom. It’s used in a number of high-end headphone pro... 阅读全帖 |
|
p*******f
发帖数: 521 | 16 应该是这样的.
就是不知DLNA protocol 会不会有流量控制.
根据bandwidth要求server把lossless stream变成lossy的. |
|
s******g
发帖数: 15854 | 17 有点想搞个胆机放在客厅里，一边听，一边做装饰，看这个港产的Audio Space AS-3i
我就想知道他能不能推动JBL L830这种音箱
音箱的spec是
Speakers Maximum Output Power: 300 Watts
Speakers Response Bandwidth: 48 - 40000 Hz
胆机的spec是
Input Impedance: > 100Kohm (RCA)
Output Impedance: 4, 8 ohm
Output Power: 32Wx2 Class AB2 P-P (Ultralinear) 16Wx2 Class AB2 P-P (Triode)
Damping Factor: > 5
Frequency Response: 20Hz - 30KHz / -1dB
T.H.D.: < 1% 20Hz-20KHz (Ref. Output)
懂的给号号脉，包子酬谢 |
|
D**********s
发帖数: 3139 | 18 堆着比较占地方，试着买一下，觉得价钱不好可以砍价。
Sony dvp s9000es 75+shipping
朋友家抱回来的一直也没用，cleaned and ready to work，遥控器找不到了。很久以
前左侧面蹭了一下墙，留了几道白。其他没什么问题。
Pioneer elite dv37 60+shipping
Everything like new in box。以前看dvd用，CD嘛基本不读刻录碟。
# Dual 96KHz/24-bit Audio DAC for superb sound quality
* 3 Chamber Isolation (Video / Audio / Power Supply)
* Double Layered Chassis for chassis stability
* Acoustic Damper Tray for supressing transport noise
Analog Output x 2
Grundig satellit 800 250+shipping
Drake比较早期的一批，短波接收一般，noise floo... 阅读全帖 |
|
D**********s
发帖数: 3139 | 19 音量控制对音质的影响，以前有一篇note写得不错，我找了半天才找到，其实还有用变
压器的方法，不过dac这块最保真的方法就是保持位深和标准输出电平，音量控制交给
前级和功放去管就好了，终究绕不过模拟放大这一关的。
Volume Control Technologies
Newsletter Edition:
July 2009 Issue
With the introduction of Benchmark’s HDR-VC™ (High Dynamic Range
Volume Control), many audio enthusiasts are taking another look at volume
control methods. What are the differences between the different volume
control topologies? Is one sonically superior, and why?
The important qualities to consider with respect to volum... 阅读全帖 |
|
a*****s
发帖数: 2663 | 20 then go with PGX system, higher end wireless system will not give you better
sound but just accommodate more mics at the same time, i.e. more bandwidth. |
|
l******g
发帖数: 6771 | 21 新手，最近看看音响,看看电影，唱唱卡拉OK，人笨不太会考古搜精华，所以就放狗搜
，看到这个深入浅出，转到版上分享一下，抛砖引玉。。。
http://thecreativealternative.com/best-home-theater-receiver-gu
#####################################################################
AV Receiver Guide – Home Theater
Posted on April 14, 2013 by mychaelp
Check out some of the latest models with 4K Ultra HD compatibility now
included in this AV Receiver Guide for Home Theater
The A/V Receiver… Some have referred to this device as “The “Heart of the
Home Theater”. And for good reas... 阅读全帖 |
|
D**********s
发帖数: 3139 | 22 在喇叭领域里，THD就是定义，至于phase，delay，loudness，bandwidth，tone都是
equalization的范畴。
h
pow
TH
quali
am
reproductio
其实 |
|
r****o
发帖数: 1950 | 23 It shows:
"You've reached the bandwidth limit for viewing or downloading files that
aren't in Google Docs format." |
|
s******a
发帖数: 184 | 24 选中文件后，下载页面总是显示“you've reached the bandwidth limit for viewing
or downloading files that aren't in Google Docs format." |
|
t******3
发帖数: 29 | 25 这两道题其实挺Tricky的，重点是在做了什么假设方面。1）还是MOS管的小信号模型问
题，那些电容在高频的时候肯定是要考虑的，还有如果65nm以下的工艺，Gate的
leackage current也应该考虑等等 2）运放的Bandwidth，SlewRate，有限的Open
Loop Gain， Offset，输出阻抗等等对于输出会有什么影响。 |
|
a**********k
发帖数: 1953 | 26 Yes, if the master finds the bucket is still too large
to fit in memory, it can ask each machine to divide
that particular bucket into more sub-buckets, and
count each sub-bucket on each machine. This way
we only have the cross-machine communication
overhead to collect the counters (not shuffling the
data records around), plus the final merge, a huge
saving in communication bandwidth as well as
time/space cost. |
|
s********y
发帖数: 161 | 27 网上看到的amazon题，感觉比较开放。大家有什么思路么。
Imagine you have a database that can only do 2,000 queries a second. Your
web application gets 5,000 queries a second, what can you do to improve the
situation? Follow up: Imagine its a stock quote engine for NASDAQ and that
the queries are about the top 100 stocks at closing.
Imagine you have a big online storefront. Your webserver can only do 1,000
concurrent requests. Many people are visiting your website and you want to
support 3,000 concurrent requests. What wo... 阅读全帖 |
|
n*******r
发帖数: 52 | 28 下面是职位介绍，有意的话，请发简历给我。
Audio Software Engineer c c++ audio speech signal processing matlab codecs
Audio Software Engineer
Proficient in C/C++ software development
Experience with fixed-point programming
Experience optimizing algorithms to reduce CPU and memory requirements
Knowledge of audio/speech signal processing or audio/speech codecs is a plus
Experience with Matlab or Adobe Audition is a plus
BS/MS in CS or EE or equivalent, with 3-7 years of relevant industry
experience
Salary will be in th... 阅读全帖 |
|
s**h
发帖数: 477 | 29 我现在想申请一个学校的Master, 他们的graduate program 里面介绍说 上一个学期课
， 然后就要找一个导师， 这个学校教授做的方向很多 （如下）， 能不能给推荐一下？
1. Software Security
Software Security and Programming Languages, including language-based
security and reliability, software monitoring, formal policy analysis,
security automata, type systems, program transformations, and aspect-
oriented and policy-specification languages.
2. Motion Analysis
-Computer Vision
-Image Processing and its Biomedical App
-Pattern Recognition
3. Intelligent Systems
-Machin... 阅读全帖 |
|
c***2
发帖数: 838 | 30 While Cisco does not look good at his point, judged by recent performance of
the stock, the general network industry is very hot.
Why is that? As I observe:
1) New types of network gears such as application acceleration led by
Riverbed and F5 (RVBD FFIV)
2) New demands for gears to build *high-bandwidth* data centers from both
wired and wireless service providers such as AT&T/Comcast to meet the ever-
growing multimedia content delivering. Several small players are thriving by
this demand.
Check... 阅读全帖 |
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v***n
发帖数: 5085 | 31 Infantryman
Army National Guard
Government Agency; XXXX; Military industry
August 2001 – August 2009 (8 years 1 month)
Deployed to Iraq in 2007-2008 as a Gunner:
Maintained security of the lead vehicle in combat
Responsible for maintaining communication equipment for our vehicle, and
performed radio troubleshooting while on the road for the convoy.
Installed and maintained a satellite internet connection through a
private firm based out of the United Kingdom. Configured a router to
filter based ... 阅读全帖 |
|
b*****n
发帖数: 760 | 32 1. You have a class that supports to input sample records and to compute the
average of the samples. The class has two members: total and count. How
would you make the class thread-safe? If 99% of the time average() is called
, how to optimize for that?
2. Talk about your recent interesting project/bug.
3. You have 100 files, each containing 10G sorted integers. How to merge all
integers into one sorted file?
4. Write a function to reverse digits of an integer. E.g. 123 --> 321, -890
--> -98.
5.... 阅读全帖 |
|
l*****a
发帖数: 14598 | 33 think about how website works
1)network traffic/bandwidth/load latency
2)web server high load
3)maybe web page need to access DB and it is slow |
|
a**v
发帖数: 800 | 34 Video Communication Engineer
Required Skills
•Extensive experiences in architecting, designing, developing, and
verifying video transport systems
•Knowledge of H.264, H.263, and/or MPEG1/2/4 video/audio codecs
•Both qualitative and quantitative measurement of video quality
•Basic knowledge of wireless or wired networking with bandwidth and
latency constraint
•Basic knowledge of media access control (MAC) for wireless or wired
networks
•Good programming s... 阅读全帖 |
|
a*******r
发帖数: 87 | 35 来这refer还能吃包子=P 那再贴一个；
我们公司还有一个职位有opening,是个IT Support Engineer（Audio and Video)的
position.JD如下。如果有感兴趣的，请把RESUME发给b*********[email protected].我会
发给hiring manager.
- Responsible for Planning, Development, Implementation, Optimization and
Support of the Audio and Video conference system
- Establish standards, policies, configuration guidelines and procedures
for operation of Network / Security Systems Infrastructure
- Manage Performance tuning and Capacity Planning of production systems.
Optim... 阅读全帖 |
|
c*******a
发帖数: 12 | 36 send your resume to j*******[email protected] if you are interested in the
following job.
Blue Coat Job Description
The Networking Platform Team is looking for a talented, highly motivated
engineer to join us as we build the next generation, high performance,
scalable network stack that will be the foundation for the next wave of
exciting Blue Coat’s products.
Blue Coat Systems is a leading provider of enterprise network solutions to
address today's constantly evolving security threat landscape. Blue ... 阅读全帖 |
|
g*********e
发帖数: 14401 | 37 在那些PM MGR 眼里 码工=bandwidth 也就是一种靠man hour堆积出来的工作。跟工地
里搬砖的没啥区别。
而且码工（还有很多做技术的）还要互相拆台。恶性竞争。 |
|
y*******g
发帖数: 6599 | 38 pm，designer也是bandwidth，这个到没什么 |
|
g*******s
发帖数: 2963 | 39 在business man眼里所有人都是bandwidth。
尤其是layoff的时候，everything is about the money |
|
w**5
发帖数: 34 | 40 1. LeetCode: Word Ladder
2. memory management
what's page fault? what would cause page fault?
char *a = 0x123456;
is the memory address pointing physical location?
kernel, software or hardware doing the memory translation?
what would cause page fault to load data from harddrive (not swap)? (
access lib.so)
3. networking
what happen when tcp packet lost? what is tcp sliding window?
what is the optimal sliding windows size if you the round tril time is
100ms and bandwidth is 100mb/s? |
|
f********t
发帖数: 6999 | 41 为什么要给老印bandwidth，最后还养好了跟我们竞争 |
|
m**********o
发帖数: 63 | 42 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 |
|
e*****e
发帖数: 1275 | 43 Given a kernal code in "0"th machine. How soon you can replicate the kernal
across N machines. Now if the machines has upload and download bandwidth
constraints, how can you impove the copy time. |
|
d********w
发帖数: 363 | 44 品味来了。
Basics and Algorithms
The Five-Minute Rule Ten Years Later, and Other Computer Storage Rules of
Thumb (1997): This paper (and the original one proposed 10 years earlier)
illustrates a quantitative formula to calculate whether a data page should
be cached in memory or not. It is a delight to read Jim Gray approach to an
array of related problems, e.g. how big should a page size be.
AlphaSort: A Cache-Sensitive Parallel External Sort (1995): Sorting is one
of the most essential algorithms in... 阅读全帖 |
|
y***k
发帖数: 162 | 45 具体要求是给我一个initial的url，要从该url出发，把所有能到达的web page下载下
来，而且要保证每个page只被下载一次。然后assume每个机器的downlink带宽比uplink
带宽高很多。
High level的架构就是用一个hash function urlToMachine把各个url map到各台机器
上。从initial url开始，将其map到一台机器上。该台机器下载对应的page，并从下载
到的page里提取出新的url。最后把提取出的新url按照urlToMachine发给对应的机器。
如此循环扩散。
每台机器上的module及功能：
1. key－value store：用来保存该机器见过／下载过的url及其对应的page content。
2. communication module：负责接收从其他机器发送来的url，和将从本地的page
process module传来的url发送给其他机器（也可以传给自己，如果url对应的机器就是
自己的话）。对于每个从接收到的url，首先从key－value store里check是否第一次见
到。如Y... 阅读全帖 |
|
g**e
发帖数: 6127 | 46 My team is looking for sr engineers to join Uber engineering in NYC. There
are 6 folks right now but we are looking to grow to 50+ by the end of this
year. Projects include entire spectrum of Uber business from mobile to infra
. There are more projects than the people that can handle so you will never
be bored. At this point I'm the only Chinese in this office, desperately
need more Chinese buddies to hang out with...
https://www.uber.com/jobs/list?keywords=&team=Engineering&location=New%
20York... 阅读全帖 |
|
a********5
发帖数: 1631 | 47 话说我这一路干过来，什么样的烙印我没见过。印度那个古普塔，比你们不知道牛到哪
里去了，我和他谈笑风生。你们呀，TOO SIMPLE， SOMETIMES NAIVE!
就说烙印吧，当年我实习时候的MENTOR，自己坑坑坑用SHELL码出来一个UI AUTOMATION
TEST FRAMEWORK。结果后来不知道从哪里来了一个女阿三，不知道怎么着就上位抢了
他的test manager的位置，然后把他的东西统统推翻，换了一个无比难用的基于RUBY的
UI AUTOMATION测试框架。后来这MENTOR就被气跑了。最近还在试图拉我入伙。然后这
个女阿三上位后就不知道从哪里拉来一堆女阿三QA，都是一行都不会码的。以前我们还
有TEST ENGINEER， 现在就只有人手测试的QA了。
去年我的TECH LEAD,一看就是老实人，受气包三个字就写在脸上那种。基本不邀功，每
次大佬找他谈话就俨然一副杨白劳的样子。。别人给他什么烂活就接什么，不过也不怎
么往下扔，自己手下人不爱做或者没BANDWIDTH做就自己吭哧吭哧做。。其实好多技术
问题都是他解决的，他也很爱护下属，但是REORG还是被边... 阅读全帖 |
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w**z
发帖数: 8232 | 48 具体说说为什么不scale 和 cache friendly？ sp 在db 上跑，不用把data传回client
再process,应该更快，也省bandwidth. 坏处是增加了db server 的负担，确实不好
debug 和 维护，也没法移植。
cache |
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x***y
发帖数: 633 | 49 【 以下文字转载自 Database 讨论区 】
发信人: xnxky (change, change, change), 信区: Database
标 题: About the latency of reading from mysql binlog
发信站: BBS 未名空间站 (Wed Nov 18 14:05:32 2015, 美东)
Hi, friends, I have a very urgent problem about mysql binlog latency, and
any help is greatly appreciated!
Here is my scenario:
We use ec2 instance running https://github.com/shyiko/mysql-binlog-connector
-java to read binlogs from an aws rds mysql master (which is row based
replication and bandwidth and throughput are not a... 阅读全帖 |
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b**********5
发帖数: 7881 | 50 一个machine没什么， 像FB那样的， gazillion machine来存你的ID-》 friend list
信息， 你怎没办？ machine 之间传来床去？
bandwidth怎没办？ 如果一个user， 像justin bieber那样， 有gazillion个friends
， 你怎没办？
2 |
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