d*******d 发帖数: 3382 | 1 I want to generate the time domain waveform samples
of square-root raised cosine pulse, which is used as the
transmitter pulse.
I find the function rcosflt() and use it as:
g=rcosflt([0;0;0;1;0;0;0],1,4,'fir/sqrt',r)
where r is the rolloff factor, and I set 4 samples per symbol.
change 4 to larger number and you will get more continuous
waveform.
When I set r=0.2, the waveform will goes to zero suddenly
after t>3T or 4T. I think sth is wrong, as the pulse is
freq domain limited, should be unlimi |
|
g****e 发帖数: 141 | 2 plz send resume to g****[email protected]
thanks
KEY JOB RESPONSIBILITIES:
•Assist in development of waveform features including requirements
gathering and development of test plans for unit, intra-component, and
system level integration and testing.
•Execution of design verification test cases, debugging failures, and
performing root cause analysis.
•Design and implement automated tests tools to be used in the design
and verification stages of development.
•Conduct analysis ... 阅读全帖 |
|
M********t 发帖数: 5032 | 3 引力波
带人类倾听星辰大海之声
新浪科技
ugmbbc
8小时9分钟前
在一波又一波传言后,终于!北京时间2016年2月11日23:40左右,激光干涉引力波天
文台(LIGO)负责人、加州理工学院教授David Reitze宣布,人类首次发现了引力波。
发布会上究竟揭开了哪些谜团?与之前的传言有何不同吗?中国科学院国家天文台黑洞
来客团队(团队主要成员苟利军 研究员为国家天文台恒星级黑洞研究创新小组负责人
,而这次被探测到的引力波正是来自双黑洞系统),全面解读这场激动人心的发布会。
正如发布会所言,在被预言将近百年、苦苦追寻几十年之后,首个位于地球之外13亿光
年的引力波源GW150914被人类直接探测到,这是一个值得纪念的伟大时刻,一个新时代
的序幕正在拉开——地球人,欢迎你来到引力波时代!
激动人心的发布会结束了,其重点内容可以被简单归纳为三点:
(1)引力波终于被探测到了。
(2)引力波产生于两个恒星量级黑洞的合并(merger)。
(3)引力波是美国的激光干涉引力波天文台(英文简称LIGO)发现的。
接下来,让我们逐个分析和解释一下以上三点,从而对这项具有划时代意义的科学发现
... 阅读全帖 |
|
q*****q 发帖数: 40 | 4 大家好:
我是搞医疗成像系统的,最近我们实验室想做一台八通道RF transmitter, 工作范围在
0.1GHz 到0.9 GHz 范围内。 有谁可以推荐推荐哪一种芯片可以独立控制每个输出通道
,并且每一个通道都是Arbitrary Waveform Generator?
多谢 |
|
ET 发帖数: 10701 | 5 我不是在做behavior model呀。
我在搭一个真的sawtooth waveform generator。 ton/toff=10, vmax=2v, vmin = 1v. |
|
l******h 发帖数: 2 | 6 Highly reputational company with very competitive compensation for all
positions.
Please send in your resume and position/positions you like to apply to my
email address below.
h*******[email protected]
All resumes will be deliver to hiring manager directly. Act fast!
Thanks!
Silicon Engineering Group
Sr. Physical Design Timing Engineer
Timing (STA) Manager
Senior Physical Design Engineer
CAD Manager - Front-End Design and Verification
Sr. CAD Engineer - Place & Route / Physical Design Engineer
Sr. CA... 阅读全帖 |
|
l******h 发帖数: 2 | 7 Highly reputational company with very competitive compensation for all
positions.
Please send in your resume and position/positions you like to apply to my
email address below.
h*******[email protected]
All resumes will be deliver to hiring manager directly. Act fast!
Thanks!
Silicon Engineering Group
Sr. Physical Design Timing Engineer
Timing (STA) Manager
Senior Physical Design Engineer
CAD Manager - Front-End Design and Verification
Sr. CAD Engineer - Place & Route / Physical Design Engineer
Sr. CA... 阅读全帖 |
|
t*******r 发帖数: 22634 | 8 当然,这个 “捷克式轻机枪 FFT 测音准” 嘛,虽然火力是猛烈,但是毕竟
轻机枪有点小重是不是,还有点小费子弹是不是。。。尼玛这次累坏俺了。。。
所以俺主要是忽悠大伙儿,俺自己一般不测,凑合听听就完事了。。。当然,
如果遇上网络对钢,那捎上 88 毫米火炮也不算重是不是?。。。sorry,
跑题了。。。:-P
下面言归正传,如何用免费且开源的 Audacity 生成这些
spectrogram / spectrum:
(1)首先在 edit -> preference -> spectrogram 里设参数。具体建议的
参数见附图。
(2)然后在 waveform 左边的名字下拉菜单里,把 “Waveform” 改成
“Spectrogram log(f)”。也见附图。
(3)如果要 plot spectrum,选中一段后,在菜单里选
“Analyze -> Plot Spectrum”,然后用鼠标在 spectrum 上移动,
自动会显示鼠标附近的峰值。
先到这里,大家有意见可以畅所欲言、自由发话嘛。。。 |
|
t*******r 发帖数: 22634 | 9 当然,这个 “捷克式轻机枪 FFT 测音准” 嘛,虽然火力是猛烈,但是毕竟
轻机枪有点小重是不是,还有点小费子弹是不是。。。尼玛这次累坏俺了。。。
所以俺主要是忽悠大伙儿,俺自己一般不测,凑合听听就完事了。。。当然,
如果遇上网络对钢,那捎上 88 毫米火炮也不算重是不是?。。。sorry,
跑题了。。。:-P
下面言归正传,如何用免费且开源的 Audacity 生成这些
spectrogram / spectrum:
(1)首先在 edit -> preference -> spectrogram 里设参数。具体建议的
参数见附图。
(2)然后在 waveform 左边的名字下拉菜单里,把 “Waveform” 改成
“Spectrogram log(f)”。也见附图。
(3)如果要 plot spectrum,选中一段后,在菜单里选
“Analyze -> Plot Spectrum”,然后用鼠标在 spectrum 上移动,
自动会显示鼠标附近的峰值。
先到这里,大家有意见可以畅所欲言、自由发话嘛。。。 |
|
J*******d 发帖数: 205 | 10 我的做法是:
比如track1是伴奏,track2是人声但有唱坏的部分,
在另一个track, 比如track3,重录唱坏的那部分(当然也包括前后一点),
在multitrack view, 选择要替换的时间段,
右键点track3, 选择edit waveform, 然后选copy,
切换回multitrack view, 右键点track2, 选择edit waveform, 然后选paste,
track2的相应部分就被替换掉了。。。 |
|
发帖数: 1 | 11 一切不知道的如果都用"我们不需要知道,上帝自有安排"这种generic answer来dodge
这个严肃的问题,来屏蔽掉所有有用的信息,对不起,这是一个典型的dogma思维。(不
好意思我只是就事说事,不想针对人,所以不用take it personal)。人的Soul的去向
是确定的,在"死亡"之前,你的灵魂是处在大脑内的松果体Pineal Gland内,松果体不
足一个米粒大小,但蕴含着人类许许多多秘密,它长的像松子Pine Nut所以得名,是一
个信息传输和保存的完美载体,和水晶类似。人死后,Soul会从松果体内出来,灵魂是
一个处在high frequency振动的一种vibration(宇宙中所有的事物都是处在不同振频上
的waveform),因为soul的振动频率很快,所以质量很轻可以忽略不计。所谓的维度
Dimension,不是学校里教的"长宽高",而是处在不用振频的物理和非物理空间,维度
越高,vibration越快,人死后的soul会离开身体进入更高维度空间。咱们所处的三维
空间是一个比较原始primitive的"世界",振动频率很慢,所以你感觉"solid",但其... 阅读全帖 |
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M**********o 发帖数: 203 | 12 Because we want to do some projects of digital control, for example using TI
2812, what do you think of the two(Tektronix),
1. DPO2014(bandwidth: 100 MHz, sample Rate: 1 GS/s;Waveform Capture Rate:5,
000 wfm/s; Record Length:1 M;Channels:4;US$ 3,250, Feature-rich tools for
debugging mixed signal designs). It seems that the probe is very expensive
for mixed signal oscilloscope, right?
2. TPS2014(bandwidth: 100 MHz, sample Rate: 1 GS/s;Waveform Capture Rate:5,
000 wfm/s; Record Length:2K;Channels: |
|
g****t 发帖数: 31659 | 13 http://blogs.adventnet.com/svembu/2005/12/30/two-philosophies-in-cdma-a-stroll-down-memory-lane/
I have now worked a little over 10 years in the industry, after getting my
PhD. In my very first year of work at Qualcomm, I noticed how even when
speaking about the same subject, namely CDMA, academia and industry were on
totally different planets. When I was in Qualcomm, I co-authored a paper
with Dr. Viterbi, titled Two Different Philosophies in CDMA, A Comparison. I
still stand by the conclusions... 阅读全帖 |
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ET 发帖数: 10701 | 14 举另外一个例子,一个大信号的sin. waveform 通过一个 sample/hold,sampling用一
个mos transistor来实现, 即使input waveform是perfect的没有harmonic, 过了这个
sample, 也会产生harmonic, 分析的办法和我提过的一样。
和small signal model有啥关系?
princip
conceptu |
|
ET 发帖数: 10701 | 15 还是不明白。
我知道反馈回来用来比较的是电压,即使sense的是inductor上的current, 通过一个i-
v转换,将v做为error amplifier的输入,与verr比较,verr是vout和vref在voltage m
ode下产生的。
verr & current*R, 再和saw tooth waveform, 输入comparator, 从而控制switching
transistor? 这弄出的是啥?
还是verr & current*R, 先比,弄出个vcontrol, 不过这个是啥意义呢?如果不是个c
omparator, 剩下的vcontrol就和voltage mode一样,用sawtooth waveform去modulate
d pulse width.
current mode有几种方式,似乎。 peak current是一种.
控制duty cycle和频率。 |
|
K**********n 发帖数: 1197 | 16
跟这帮自称理科的文科生物wsn实在纠缠不清楚。给丫们上点洋大人自己的说法吧,而
且都是学术圈的,已有reference一堆,其中一份是著名的兰德公司的报告。
另外,美国和澳洲已立法限制使用脑波扫描仪,拿脑波扫描仪扫本国公民已是联邦法的
重罪。不过这个比较难的是你无法证实谁接收了你的脑信号。所以立了法跟没立一个样。
Remote Mind Control Technology
Reprinted from SECRET AND SUPPRESSED: BANNED IDEAS AND HIDDEN
HISTORY, edited by Jim Keith, $12.95, available from
1-800-680-INET.
There had been an ongoing controversy over health effects of electromagnetic
fields (EMF) for years (e.g., extremely low frequency radiation and the
Navy's Project Sea... 阅读全帖 |
|
T**********e 发帖数: 29576 | 17 裤子大的地震资料图哪里搞来的,怎么美帝专家说那里是地震多发带,还是火山活动带。
掉一架飞机在海里能造成2。7级地震,裤子大太敢说了。
U.S. Scientists: 'Seismic Event' Near Missing Jet Path is Normal
The “seismic event” that Chinese scientists detected close to where the
missing Malaysia Airlines jet lost contact and said were consistent with a
plane crash are “regularly occurring,” U.S. scientists said Friday.
U.S. Geological Survey analysts “have a different conclusion” than the
University of Science and Technology of China, which said Friday morning: “
It was... 阅读全帖 |
|
s**********d 发帖数: 36899 | 18 跟生物男没法说。
你这个waveform,假设sample rate 1.6G. 说说多长时间能看到百万分之一的shift.
再说说怎么能知道那个shift是shift而不是发过来的数据就是那样的。
★ 发自iPhone App: ChineseWeb 8.6 |
|
m**a 发帖数: 1840 | 19 【 以下文字转载自 EE 讨论区 】
发信人: mola (Super Baby), 信区: EE
标 题: 为极解密:如何看待华为拿下5G“短码”方案?
发信站: BBS 未名空间站 (Thu Dec 8 12:21:31 2016, 美东)
朋友大作,发在知乎。欢迎点赞和转发。
https://www.zhihu.com/question/52732376
美国当地时间11月17日凌晨0点45分,在刚刚结束的3GPP RAN1 87次会议的5G信道编码
方案讨论中,经过艰苦卓绝的努力和万分残酷的竞争,以中国华为公司主推的Polar
Code(极化码)方案,成为5G控制信道eMBB场景编码方案。
编者按
“华为极化码事件”内幕:
极化码获得的并非之前大肆炒作的“短码”。
极化码打败的对手并不是LDPC,而是在控制信道上取代4G现有技术TBCC。
若非极化码最终靠非技术手腕挤进控制信道,华为投资几十亿的5G“三神器”在5G NR
第一阶段业已全部打水漂。
整个5G信道编码又经历一番怎样波澜壮阔的争斗,这背后又隐藏着多少暗流汹涌的阴谋
诡计。“为极解密” 为您最全方位的解析。
为极解... 阅读全帖 |
|
s*x 发帖数: 8041 | 20 閒話
雞年到,今天是正月初七,立春,這個年已經過了一半,春天就要到了,部份華人已經
回到工作崗位,開始又一年辛勤的工作。
市長向市民們和網友們拜年,祝你們雞年健康、萬事如意!
以前每次過年,市長都要寫篇應景的文章,譬如談談美食和美酒、「春晚」的表演等等
,今年除了拜年,礙於自己訂的老規矩,其他都免了。
想來想去,過意不去,就寫篇長文為各位在過年期間添點熱鬧。各位幾杯下肚後,看看
市長的政論文章解解酒,也是一樂。於是打破自己的禁令,寫篇文章湊熱鬧,算是市長
的“Executive Privelege”罷,希望網友們莫要怪罪,本市規則各位還是要遵守的。
本來打算寫「回顧2016,展望2017」,想想一月已經過完了,而「一個中國」的挑戰隨
著川普的走馬上任才開始,「遼寧號」的餘威猶存,就換了上面這個題目。這篇文章長
了一點,至少要分兩部份貼出,希望能在春節期間(吃湯圓以前)完工。
閒話少敘,讓我們進入正題。
「一個中國」的風波
2016是一個多事之年,在英國脫歐洲、中東戰亂和狂人川普當選美國總統等一連串黑天
鵝事件中,台灣自然也沒有缺席,那就是台獨要角蔡英文女士以多數票當選中華民國的
總統。... 阅读全帖 |
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B*D 发帖数: 5016 | 21 这个是sonus大特务写的节选
原文在北朝http://tinyurl.com/bmv9awe
标题是对抗海洋普查-侦测系统
和D21实在没有啥关系...
全文在这里
http://tinyurl.com/csaghex
对抗SAR/ISAR需要以Digital Radiofrequency Memory,DRFM数字射频存储器作为硬体基
础的waveform doctoring measure,波形篡改措施.DRFM提供给海军将接受的数量巨大的
SAR/ISAR pulse从模拟信号转化为不会随着时间而磨损的数字信号,进行高速分析和调
制的能力.波形篡改是通过分析SAR/ISAR在军舰的特征明显的边缘,倾角和周边海域的反
射信号,复制和调制虚假的SAR/ISAR成像信号以欺骗SAR/ISAR星座系统.波形篡改系统的
原型在2004年被透露,随后没有被继续公开报道.但是2004年的报道表明这个系统已经被
发展超过6年.
CCD
射. |
|
B*D 发帖数: 5016 | 22 这个22雷达的技术是否就是
Digital Radiofrequency Memory,DRFM基础上的波形篡改waveform doctoring measure
另,节选自作者的访谈:
【10】设想一下,胡锡进、茅于轼、方舟子、韩寒看到本书的评价?
胡锡进:这本书的资料很全面,应该对关心中国未来的人有启发,结论未免有点说大话
。但我还是打算选几段数据放到环球时报的评论版。
茅于轼:我翻了一下这本号称要提出新的普世价值的书,一没提市场,二不提自由,通
篇都在炫耀低水平下堆积的庞大产能。这是典型专制教育下自我麻醉的产物。
方舟子:没有读完,因为读不下去,不想评价。就读过的部分而言,作为学术读物太粗
糙,作为时政读物太繁琐。
韩寒:我这个人对政治、经济什么的大话题也不关心,我就是上海小镇的一个普通人。
推翻美国霸权什么的,你到街上问问摆摊的老头,他关心么?我和他的态度是一样的。
作者如果真要站在中国人的立场上说话,我想请他一起到我家乡的小镇街头抽根烟、散
散步,看看城管和市民,然后再谈这个话题。
【11】从这本书的内容和观点来看,是一群生于工业时代的青年人针对中国的工业化现
实与未来世界... 阅读全帖 |
|
g**1 发帖数: 10330 | 23 http://freebeacon.com/chinese-military-capable-of-jamming-u-s-c
看来有办法干扰Link 16数据链。
Chinese Military Capable of Jamming U.S. Communications System
U.S. spy’s secrets assist Chinese electronic warfare against U.S. military
data links
BY: Bill Gertz Follow @BillGertz
The Chinese article reveals that the People’s Liberation Army is studying
this feature and working to defeat it.
The article, “Anti-Jamming Performance of JTIDS-Type Waveform,” was
published July 10 in the journal Aerospace Electro... 阅读全帖 |
|
C********n 发帖数: 6682 | 24 还是看wiki的table吧
http://en.wikipedia.org/wiki/Sound_pressure#Examples_of_sound_pressure_and_sound_pressure_levels
Shockwave (distorted sound waves > 1 atm; waveform valleys are clipped at
zero pressure) >101,325 Pa >194 dB
Theoretical limit for undistorted sound at 1 atmosphere environmental
pressure 101,325 Pa ~194.094 dB
Theoretical limit based on Atmospheric pressure records, Min & Max western
Pacific Ocean 1979 (Typhoon Tip) & Agata, U.S.S.R. 1968 87,000 - 108,
400 Pa ... 阅读全帖 |
|
i*********r 发帖数: 30 | 25 This one is in milpitas, ca. The opening is real and urgent. Your resume can
be sent to hiring manager directly.
Prefer some one with 3-5 years digital design experience. If interested,
send email via mitbbs.
----------------------------------------------------------------------------
----
Design responsibility for algorithms associated with coding and viterbi
detection for read channels in hard disk drives. Candidate should be able to
work closely with architects to implement new algorithms and... 阅读全帖 |
|
S***l 发帖数: 383 | 26 Job Description: Sr. ASIC DFT Engineer
As part of the Central DFT group, you will be responsible for architect,
implementation, verification, and lab bring-up of the DFT and DFM solutions
for the advanced and comprehensive Design for Test/Manufacturing (DFT/DFM)
features for the system on a chip integrated in the industry leading edge
network products.
Core Responsibilities:
• ASIC DFT lead to top level architect, implement and verification of
DFT features including MBIST, Logic BIST,... 阅读全帖 |
|
发帖数: 1 | 27 人家转码早啊,以前一起在lab里bringup,还是我教他怎么看waveform dumps呢……
当时他告诉我这行没前途我还不信。后来人家辞职刷题转码,在twitter混了几年,到
mgr,去年去了lyft,现在都是director了。怎么说呢,fuck my life |
|
i*********r 发帖数: 30 | 28 【 以下文字转载自 JobHunting 讨论区 】
发信人: indexfinger (index), 信区: JobHunting
标 题: [LSI Read Channel Digital Design Engineer]
发信站: BBS 未名空间站 (Thu Aug 18 00:22:00 2011, 美东)
This one is in milpitas, ca. The opening is real and urgent. Your resume can
be sent to hiring manager directly.
Prefer some one with 3-5 years digital design experience. If interested,
send email via mitbbs.
----------------------------------------------------------------------------
----
Design responsibility for algorithms associate... 阅读全帖 |
|
g****e 发帖数: 141 | 29 plz send resume to g****[email protected]
thanks
Job Description:
Design, develop and document RF board level hardware design from concept
through to production. Coordinate and participate in hardware product
development activities. Responsible for schematic capture, netlist
generation, BOM generation and circuit board layout. Perform lab testing (
DVT, HVT and SVT) and troubleshooting as needed. Take a collaborative design
and validation approach in working with multi-functional team of PCB,
hardwa... 阅读全帖 |
|
l*******p 发帖数: 136 | 30 孩子听力没有问题
因为中国医生和美国医生都说了听性脑干测试如果没有问题 就说明没有问题。
其他测试都不能百分之百的说明一定有问题。
现在听性脑干测试结果出来了,全部数据都正常。图形也是正常的。中国医生已经看过
了,说没有问题 是正常的。美国下一个专家约的是五月初。我想结论也会是没有问题。
但是美国测试听力那个人报告后面加了一句自己的话。他最后结论这样写的
all absolute ,inter-latency peaks and intercultural latencies were recorded
within normal limits, however poor waveform morphology on both ears may
suggest retro cochlear involvement.
我想他把举手测试那个也考虑进去了。可是问题是,听性脑干测试是个独立的测试,不
需要他考虑任何因素。这个测试不需要孩子的配合。是硬性指标,没问题就是没问题。他报告写着MAY 那这么弱的预期 就是有没有问题 他都没有责任了。
最搞笑的是 他报告还没有出来的时候,我跟他说 专家说... 阅读全帖 |
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c*******u 发帖数: 12899 | 31 ☆─────────────────────────────────────☆
laborship (打工) 于 (Sun Apr 10 01:56:23 2011, 美东) 提到:
说说这这几天痛苦的经历。
朋友的孩子听力有问题。我听说后,有点担心自己的孩子,我觉得有时候叫他他不应。
但是小孩子注意力不集中也是可能的。可是咱们保险好,看病不花钱,那我就要了测试
听力的电话,预约了一个,想费事赚个放心吧。
结果痛苦的经历开始了。
医生测了筛查那个,说没有问题。又给测了一个机器放声音,孩子举手的测试。孩子配
合不好。一会说耳朵难受,一会说头疼,反正孩子就是不配合。医生又用另外一个发声
波到耳朵的设备测了一下。说没有收到回波,看了孩子耳朵 说是里面有耳屎,让去家
庭医生那里清理。我回家也没当回事。觉得就是孩子太小不配合而已,没啥问题。毕竟
筛查都过了。
但是三天后医院来电话,让回去复查。我就匆忙约了家庭医生。家庭医生看了之后说,
耳屎太深,不用清 自己就出来了。我就带孩子又去测了听力。这次只测了举手那个测
试。很奇怪,让我去请耳屎,不知道为啥不看耳朵了。举手测试之后就跟我说,我孩... 阅读全帖 |
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B*W 发帖数: 1341 | 32 这事儿不是n多人普及过n多回了么?
The following question was answered by an expert in the appropriate field:
Q
I'm pregnant and I have to use computers for a few hours a day and I know
electric appliances also emit radiation. How harmful is all of this to me
and my baby?My friend suggests that I buy radiation protection suits.
According to their advertisements, the garments are made from a kind of
fiber interwoven with antiradiation material. Do you think it works? Should
I wear it?
问题:我现在怀孕了,每天需要用电脑几个小时,我知道电器也... 阅读全帖 |
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B*W 发帖数: 1341 | 33 这事儿不是n多人普及过n多回了么?
The following question was answered by an expert in the appropriate field:
Q
I'm pregnant and I have to use computers for a few hours a day and I know
electric appliances also emit radiation. How harmful is all of this to me
and my baby?My friend suggests that I buy radiation protection suits.
According to their advertisements, the garments are made from a kind of
fiber interwoven with antiradiation material. Do you think it works? Should
I wear it?
问题:我现在怀孕了,每天需要用电脑几个小时,我知道电器也... 阅读全帖 |
|
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i*********r 发帖数: 30 | 35 【 以下文字转载自 JobHunting 讨论区 】
发信人: indexfinger (index), 信区: JobHunting
标 题: [LSI Read Channel Digital Design Engineer]
发信站: BBS 未名空间站 (Thu Aug 18 00:22:00 2011, 美东)
This one is in milpitas, ca. The opening is real and urgent. Your resume can
be sent to hiring manager directly.
Prefer some one with 3-5 years digital design experience. If interested,
send email via mitbbs.
----------------------------------------------------------------------------
----
Design responsibility for algorithms associate... 阅读全帖 |
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S*******8 发帖数: 301 | 36 谁有临床肝病的背景,来review这文章:
“Comparison of portal vein Doppler indices and Hepatic vein Doppler
waveform in patients with non alcoholic fatty liver disease with healthy
control”
若感兴趣,把你的背景和简历尽快发到我的l********[email protected]信箱。谢谢。 |
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m********1 发帖数: 220 | 37 Title: A wavelet-based data compression algorithm using a vectorial-
intelligent
dynamic bit allocation strategy for power oscillographic records.
Abstract:
In this paper a compression algorithm for oscillographic records in power
systems is proposed. The algorithm is based on three main components: (i)
the
discrete Wavelet Transform (DWT), (ii) a vectorial-intelligent dynamic bit
allocation strategy built upon a self-organizing map (SOM) and (iii) an
efficient entropy coding. The process of dyn... 阅读全帖 |
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d**y 发帖数: 32 | 38 有两篇,请有兴趣且能审稿的站内信联系。
1:题目:Modeling and simulation an anti-reflective coating of ZnO and ZnS
for silicon solar cells using Silvaco software
摘要
In this paper simulated single layer anti-reflective coating on silicon
solar cell that based on the refractive index limit of silicon dioxide (SiO2
), zinc oxide (ZnO) and zinc sulphide (ZnS)
are presented. Two simulations of ZnO and ZnS coating were simulated to
compare with SiO2
anti-reflective coating on silicon solar cell surface. These simulations
car... 阅读全帖 |
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s*****o 发帖数: 1540 | 39 给我站内发信,告诉我你能审那一篇的编号.要求
1:PHD already or almost obtained in CS or EE。为保证审稿质量,必须是相关专
业的。不可能给其它无关专业博士审理,见谅。
2: Due Sept 5th
3: let me know your edas id. (If you don't have an edas, I assume you are
not working in these fields).
-------------------------------------
(1) a transmission strategy for OFDM-based communication systems. null-tone
allocation method. radar's pulse interference. suppressing pulsed
interference. effect of ICI in OFDM waveforms. the impact of PB can be
characterized as a form... 阅读全帖 |
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r*c 发帖数: 16750 | 40 Junle Jiang
Grad Student in Geophysics
BS Physics, 2009, Peking University, China
California Institute of Technology
Seismological Laboratory
I am interested in an integrated understanding of the physics and mechanics
of finite earthquake source. With Professor Nadia Lapusta, we work on
numerical simulations of fault behavior governed by laboratory-derived
friction laws, incorporating long-term slow tectonic loading and short-
bursting dynamic rupture. I focus on rheological complexities that pr... 阅读全帖 |
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i*********r 发帖数: 30 | 41 【 以下文字转载自 JobHunting 讨论区 】
发信人: indexfinger (index), 信区: JobHunting
标 题: [LSI Read Channel Digital Design Engineer]
发信站: BBS 未名空间站 (Thu Aug 18 00:22:00 2011, 美东)
This one is in milpitas, ca. The opening is real and urgent. Your resume can
be sent to hiring manager directly.
Prefer some one with 3-5 years digital design experience. If interested,
send email via mitbbs.
----------------------------------------------------------------------------
----
Design responsibility for algorithms associate... 阅读全帖 |
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g***l 发帖数: 2753 | 42 来自主题: SanFrancisco版 - 地震了? Magnitude 3.0 - local magnitude (Ml)
Time Friday, November 8, 2013 at 10:04:27 PM (PST)
Saturday, November 9, 2013 at 6:04:27 (UTC)
Distance from San Ramon, CA - 3 km (2 miles) E (97 degrees)
Danville, CA - 7 km (4 miles) SE (136 degrees)
Dublin, CA - 8 km (5 miles) N (355 degrees)
San Francisco City Hall, CA - 42 km (26 miles) E (90 degrees)
Coordinates 37 deg. 46.6 min. N (37.777N), 121 deg. 56.6 min. W (121
.943W)
Depth 8.3 km (5.2 miles)
Quality ... 阅读全帖 |
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m**a 发帖数: 1840 | 43 【 以下文字转载自 EE 讨论区 】
发信人: mola (Super Baby), 信区: EE
标 题: 为极解密:如何看待华为拿下5G“短码”方案?
发信站: BBS 未名空间站 (Thu Dec 8 12:21:31 2016, 美东)
朋友大作,发在知乎。欢迎点赞和转发。
https://www.zhihu.com/question/52732376
美国当地时间11月17日凌晨0点45分,在刚刚结束的3GPP RAN1 87次会议的5G信道编码
方案讨论中,经过艰苦卓绝的努力和万分残酷的竞争,以中国华为公司主推的Polar
Code(极化码)方案,成为5G控制信道eMBB场景编码方案。
编者按
“华为极化码事件”内幕:
极化码获得的并非之前大肆炒作的“短码”。
极化码打败的对手并不是LDPC,而是在控制信道上取代4G现有技术TBCC。
若非极化码最终靠非技术手腕挤进控制信道,华为投资几十亿的5G“三神器”在5G NR
第一阶段业已全部打水漂。
整个5G信道编码又经历一番怎样波澜壮阔的争斗,这背后又隐藏着多少暗流汹涌的阴谋
诡计。“为极解密” 为您最全方位的解析。
为极解... 阅读全帖 |
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B******1 发帖数: 9094 | 44 So what is causing my P0420 code?
There are a number of things that could be causing this p0420 catalyst
efficiency code. The most common thing is the catalytic converter itself is
no longer functioning properly. The other likely thing is the rear O2 (
oxygen) sensor is no longer working properly. Other things could include
exhaust leaks, damaged exhaust pipes, damaged O2 sensor wiring/connectors,
plugged catalytic converter, etc.
OK, so I want to diagnose things, what do I do next?
The ... 阅读全帖 |
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r****t 发帖数: 300 | 45 更新,已经求到,多谢熊猫版主,罗大佑和艾宝宝的帮忙!
急用,包子酬谢!
Jie Yang, Mary Taylor, Yu Zhang and Tapank K. Sarkar, "Effective
Interpolation of High Frequency domain Data by Phase Smoothing," Radio
Science, Vol. 43, August 2008
Pinyuen Chen, Tiee-Jian Wu and Jie Yang, "A Comparative Study of Model
Selection Criteria for the Number of Signals". IET Radar, Sonar & Navigation
, Vol 2, Issue 3, June 2008, pp 180 - 188.
Jie Yang, Tapan K. Sarkar and Paul Antonik, "Applying the Fourier-Modified
Mellin Transform (FMMT) to Doppl... 阅读全帖 |
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b*******t 发帖数: 33714 | 46 放狗搜了一下,有人说剪辑的时候容易有杂音,我通常都是前后waveform差不多的地方
拼起来的,很久没用过audition了,据说会自动smooth一下,不是很了解 |
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f******k 发帖数: 297 | 47 misunderstanding le. i was just questioning why wings only
say jigsaw is the best, and whether it is meaningful. random
waveform can also be temporally limited so it can be expanded
periodically, so in that sense you have fundemental freqz,
and so on. i think i did not say aperiodic signal.
next time do not use heavy words, hoho. |
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q*****m 发帖数: 3339 | 48 这个功能还满新鲜的:
【Timed comments】
Timed comments let your friends and fans give you valuable feedback at
specific moments throughout the waveform. Pinpoint exactly what's working
well and start a conversation around it. |
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t*********5 发帖数: 5404 | 49 一般除了特别高的手才可以一遍唱下来都很完美,大部分歌手(包括出片歌手)都是要
唱好几遍,然后挑出来最好的片段组合成一个完美的。下面以图的形式给大家说说天天
的笨办法。其实应该有多种方法达到同样的目的的,我这个方法用的最熟。AA1.5单双
轨转换非常容易,这也是用它来做后期的一个优势吧。
首先,我一般录歌都会从头到尾唱2,3遍,难唱的,可能更多遍。以其中最好的那一轨
为主要轨,对这一轨中不满意的地方,用其它轨里好的地方替换。重新录的部分如果只
是几句也可以不用整首都录,只是在新的一轨里从不好的地方的前面一点开始录。
第一步:见图1,多轨状态下,track2 是主要轨,track3是修正轨。
第二步:图2.在多轨状态下,同时highlight第二,第三轨里要替换的部分,这样做的
目的是为了对齐。然后第三轨里点右键,选中第一项“edit waveform”
第三步:图3.进入第三轨的单轨状态,点右键,选中copy。然后点击左上角的切换,返
回多轨状态。
第四步:图4.在多轨状态下重复第二步,这一次是要选中被替换的音轨,track2.注意
被highlight的地方一直都不变。
第五步:图5,... 阅读全帖 |
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a*******u 发帖数: 6324 | 50 估计应该是这个。
然后在里面选一个(Choices include Soprano
Voice, Alto/Tenor Voice, Bass/Baritone Voice)
THROAT Evo Physical Modeling Vocal Designer
THROAT Evo is a revolutionary new vocal tool that lets you process a vocal
through a meticulously crafted physical model of the human vocal tract.
THROAT Evo begins by neutralizing the effect of the original singer’s vocal
tract and then gives you the ability to specify the characteristics of the
modeled vocal tract.
THROAT Evo’s controls allow you to modify the voi... 阅读全帖 |
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