j****m
发帖数: 8 | 1 看到有人指出在icmlc 2011会议中同一个作者发表论文达10多篇。本文深知做学术
的不易，觉得在短时间内能在同一个会议上发表10多篇论文，不是造假抄袭，就是粗制
滥造。于是随便找了一篇搜索了一下。发现不如所料，亩产万斤果然是有问题的。
请相关专业人员鉴定是否属于抄袭，以及是否还有其他未发现之处。
抄袭文（以下简称USOM文）
Le Li, Xiaohang Zhang, Zhiwen yu, Zijian Feng, Ruiping Wei, USOM: Mining
and Visualizing Uncertain Data Based on Self-Organizing Maps, Proceedings
of the 2011 International Conference on machine Learning and Cybernetics,
804-809
作者单位：
School of Computer Science and Engineering, South China University of
Technology, Guangzhou, China
... 阅读全帖 |
|
l**i
发帖数: 8144 | 2 简单地讲 就是谋事在人 成事在天
认为社会发展沿着某个预定方向发展的理论 都是傻逼理论
--------------------------------------
Anthropic principle
From Wikipedia, the free encyclopedia
In astrophysics and cosmology, the anthropic principle is the philosophical
argument that observations of the physical Universe must be compatible with
the conscious life that observes it. Some proponents of the argument reason
that it explains why the Universe has the age and the fundamental physical
constants necessary to accommodate conscious life. As a ... 阅读全帖 |
|
h********g
发帖数: 5 | 3 Guangfeng Zhao, Ming Liu and Fuqian Yang, The effect of an electric current
on the nanoindentation behavior of tin, Acta Materialia 60 (2012) 3773-3782
Abstract
Electrical–thermal–mechanical interactions determine the reliability and
performance of microelectromechanical devices and systems.
Using the nanoindentation technique the effect of an electric current
on the indentation deformation of Sn strips was studied for an
indentation load in the range 50–200 lN. During the indentation an e... 阅读全帖 |
|
a****a
发帖数: 5763 | 4 http://bbs.weiphone.com/read.php?tid=503923
Mac OS X 10.6即所谓的Snow Leopard操作系统已正式发售。一如既往，Apple产品光
鲜的外表下凝聚了太多艰辛的劳作。ArsTechnic的John Siracusa以其独特的、专业的
、全面的视角深入翔实地体验这款最新的操作系统。
Weiphone.com将对该综述进行翻译整理并独家连载。欢迎关注。
“Moore(摩尔)定律”在技术领域广为流传，然而某种程度上讲，也存在广泛
的误解。所谓的“Moore定律”简言之就是“计算机的速度大体会在每两年翻一倍”，
然而这并非Gordon Moore的原话。Gordon Moore在1965年的《Electronics》杂志上撰
文涉及了半导体行业的诸多问题，如果将其归结为一条“定律”，那么大致应该是：每
平方英寸的硅片上集成的晶体管数量每12个月增加一倍(the number of transistors
that fit onto a square inch of silicon doubles... 阅读全帖 |
|
s***e
发帖数: 5242 | 5 by Freeman Dyson
12/2010
In 1946 Subrahmanyan Chandrasekhar gave a talk at the University of Chicago
entitled “The Scientist.” 1 He was then 35 years old, less than halfway
through his life and less than a third of the way through his career as a
scientist, but already he wa reflecting deeply on the meaning and purpose of
his work. His talk was one of a series of public lectures organized by
Robert Hutchins, then the chancellor of the university. The list of speakers
is impressive, and included ... 阅读全帖 |
|
f**d
发帖数: 768 | 6 这是一本计算神经科学的优秀著作，全文拷贝这里（图和公式缺），有兴趣的同学可以
阅读
如需要，我可以分享PDF文件（－－仅供个人学习，无商业用途）
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
|
w*******y
发帖数: 60932 | 7 Link:
http://www.amazon.com/Vibrant-Health-Green-Vibrance-Family/dp/B
$41.90 with Subscribe & Save - Free Shipping
The cheapest I've seen this for is the current price, which is 49.29, and
this is the first time I've seen it eligible for subscribe & safe... 25
billion probiotics per serving.
Excellent product - check out the reviews.
Green Vibranc
The Greatest Food on Earth
* The #1 Green Food in the Country!
* Nutritional Powerhouse
* Loaded with trace nutrients
* Supports healt... 阅读全帖 |
|
发帖数: 1 | 8 12月26日 事实的真相
以前我们分析过，Augusta, GA 只是这个人体基地的一个点，而且我们也追踪到还有一
个点在加州。那么经过更多的分析，显示事实的真相可能是如此。这些地下通道是很久
以前就存在的，是为了战争或避难用的，后来在南北战争中，又充当奴隶逃跑到北方的
通道。那么在后来的后来，就被一些别有用心的人充当了非法活动的场地。而到了80年
代后，日本人就加入进来，把其改造成了一个军事，人体实验基地，成了报复美国的一
种手段。当然，我也强调历史和解，仇恨和解，但要在正确的认知，悔改下的和解。如
果一边在屠杀受害者，一边高谈和解，并千方百计掩盖事情真相的曝光，这不是悔改的
表现，最多是转移了屠杀的目标，我们不能原谅罪恶势力彼此勾结下的和解。根据分析
，这个基地的入口就在Deerfield, ILLinois. 世界每一个人都是这个基地的受害者，
都是这些大药厂的受害者，受害者以亿为单位来计算。你们很可能都在不知不觉中受到
了他们的伤害，请把信息传达到世界每一个角落，让我们一起携手和世界上最邪恶的势
力做顽强的斗争，他们现在还在屠杀无辜的受害者，每天在我家里杀人。请你们和我站
在... 阅读全帖 |
|
m*****l
发帖数: 81 | 9 讲讲我的了解和理解，权当抛砖。
最重要的就是看data map和人口的details（各档次的人口数等等）。
先不说城市特色，就看基本的residence, commerce, industry。
一个民居有两个要素，land value和density。每个分三档。land value可以由玩家控
制，看data map可以了解，一般政府部门（警察，医疗等）都是绿色，但是实际影响范
围很小。主要控制land value的是公园。公园也分档，靠对公园档次的控制可以控制
land value。
Density要靠时间，只要市民高兴，就会满满的提高density。最终受路的限制。
每个residence里面有三种人：worker，shopper, student。
市民的高兴就有多个因素了。有：
job: 要有工作机会。
commerce：shopper回出去买东西，必须买自己land value档次的东西。买得到的话，
提高happyness。
服务：医疗，警察，消防等等，有服务就会高兴。没服务，导致死亡或者垃圾堆积，就
会有一段时间不高兴。
教育：家里的student能上学也会高兴。
... 阅读全帖 |
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P**********e
发帖数: 543 | 10 "Short-term investments are very bullish, erratic, unpredictable and
undependable. But, long term investments are, relatively, considered safe
and reliable. Precious metals like gold and silver are considered to be true
money, and governments have been bastardizing precious metals since the
night of time. It's all about printing fake money anyway. Even as stocks
were losing their value, gold was marching steadily, increasing by five
percent in US dollars.
However, this 'buy and hold' strategy mi... 阅读全帖 |
|
f**d
发帖数: 768 | 11 这个版有人在做神经免疫，想必对这篇文章很感兴趣：
加州大学戴维斯分校科学家的一项最新研究表明，一种免疫系统蛋白分子能调控大
脑神经元之间突触连接的数量。这也显示出，在人们的免疫能力、感染疾病和精神
状态，如精神分裂、孤独症之间可能存在着某种关联。相关研究发表在2月27日出
版的《自然·神经科学》上。
加州大学戴维斯分校神经病与神经生物学、生理与行为学院副教授金伯利·麦卡利
斯特解释说，精神分裂、孤独症以及其他精神错乱等神经疾病与脑神经连接的改变
有关，这些改变影响了大脑正确处理信息的能力。“某些免疫基因和免疫失调也和
孤独症和精神分裂有关系，根据我们的研究，大脑中免疫分子的形成可能会改变脑
神经的连通性。”
他们研究的是一种名为主要组织相容性复合物I型（MHC type I）的蛋白质。10年
前人们就发现，在出生后较晚时的大脑发育关键期，MHC-I型蛋白质与突触连接的
消除有关。而新研究发现了MHC-I型蛋白质的另一项功能，它还能在出生后早期的
大脑发育期间建立起神经元的连接。
无论是啮齿类动物还是人类，MHC-Ⅰ型蛋白质在每个个体之间都不同，免疫系统以
此来区分出“自己”和“异己”，... 阅读全帖 |
|
f*********s
发帖数: 1881 | 12 朋友一岁小孩在国内，前段时间发现翻白眼比较频繁，没有太在意。后来送去医院检查
，发现是可能是视网膜肿瘤。昨天医院CT和MRI的结果出来，确诊是Trilateral
retinoblastoma。小孩的父母非常着急，希望能够保住小孩的眼睛。请大家给出宝贵意
见。
由于这里国内的专家比较多，也有很多已经成功的当上了美国的医生，因此到这里来希
望能够得到一些指导意见。小孩的父母经济条件尚可，如果需要到美国来治疗的话，也
请推荐这方面的顶尖医院。先在这里代朋友的父母和小孩感谢了。
为了表示感谢，所有有价值的信息都会收到包子。
附件里面是CT和MRI的结果。（不好意思片子太多，本人外行，实在不知道该贴哪张，
就在前面三个回复里面贴了剩下的所有的片子。请专家自行挑选。）
下面是诊断报告：
----------------------------------------------------------------------
Test: Ocular MRI without and with contrast (under 20kg)
Impression:
Right space-occupy... 阅读全帖 |
|
t*******9
发帖数: 240 | 13 www.leadingre.com
LOCAL STATISTICS FOR GREAT FALLS
Population
Total Population 8,757
Population Density 488 Persons/Sq. Mile
Female Population 4,325
Male Population 4,432
Population Change since 1990 ↑ 23% Increase
Population Change since 2000 ↑ 2% Increase
Colleges
Nearest 2-Year Public College MONTGOMERY COLLEGE
Distance 0 miles
Nearest 4-Year Public College 10
Distance 6 miles
Households and Income
Total Number of Households 2,728
Family Households 2,352
Av... 阅读全帖 |
|
O**********e
发帖数: 69 | 14
计算Density Altitude, 考试考过的，
例如机场海拔6000 feet,
高度表设定2892,
当地气温26摄氏度
Density Altitude 计算如下：
Pressure altitude = 6000 + (29.92-28.92)*1000 = 7000 feet
标准气温 ISO temperature = 15 - (7000/1000)*2 = 1 摄氏度
Density Altitude = 7000 + (26-1)*120 = 10000 feet
可见整整比机场原来的高度高出3000feet
高Density Altitude有以下问题：
起飞降落的跑道长度要求要高出很多，
一定要查阅手册，检查天气报告，计算跑道长度要求。
从上面的公式可以看出气温对Density Altitude影响非常大，
有可能的话尽量选早上黄昏起降。
另外True Airspeed比Indicate Airspeed高很多，
可以用E6B计算尺算出，所以起飞降落目视速度要高很多，
但表速度相同，请保持正确的表速。
Mixture lean, 这个前面Trajan说了，空 |
|
z*h
发帖数: 773 | 15
==> Current power density is still lower than directed methanol fuel cell
but far higher than theoretical power output of microbial fuel cells. The
maximum power density of sugar battery could be increased by 100 folds by
integration of several things together. It is why we never work on microbial
fuel cells.
and bio-active electrode, i.e. conductive bio-enzyme mimic structure or
==> No one claim that sugar biobattery is new. In this paper, we have two
things new:
(1) the first complete oxidati... 阅读全帖 |
|
m********r
发帖数: 543 | 16 My whole point is that CRS-1 doesn't have a 60GE ports density per line card.
Well, high port density per line card on core router is never a requirement. When the port density is a requirement on core router, the core router itself is evolving toward the edge. And there will be a next generation core router come into picture. It does not make sense to compare the port density of a edge router with a core router. However, when we were talking about MX960 port density, waves jumped into claim 60G |
|
h********r
发帖数: 821 | 17 此人基本算做物理的，web of science收录文章74篇。
标题: DENSITY-FUNCTIONAL THERMOCHEMISTRY .3. THE ROLE OF EXACT EXCHANGE
作者: BECKE, AD
来源出版物: JOURNAL OF CHEMICAL PHYSICS 卷: 98 期: 7 页: 5648-5652
出版年: APR 1 1993
被引频次: 31,388
标题: DENSITY-FUNCTIONAL EXCHANGE-ENERGY APPROXIMATION WITH CORRECT
ASYMPTOTIC-BEHAVIOR
作者: BECKE, AD
来源出版物: PHYSICAL REVIEW A 卷: 38 期: 6 页: 3098-3100 出版年: SEP
15 1988
被引频次: 19,752
标题: A NEW MIXING OF HARTREE-FOCK AND LOCAL DENSITY-FUNCTIONAL THEORIES
作者: BECKE, AD
来源出版物: JOURNAL ... 阅读全帖 |
|
g*********n
发帖数: 808 | 18 锂电池特辑1:迈向超级电池[物理]
锂离子电池，也许是下一代能源和交通问题解决的方法
1801年，伏打把他的“电堆”装置公开给拿破仑，他不可能想到两个世纪之后，他的发
明可能成为人类生活的中心。由被盐水浸泡的锌和银电极的原始电池使得小型电化学能
源-锂电池成为了现代消费电子市场的中心。
在《瓶瓶装闪电》中，科学记者森斯-费莱彻解释了锂电池的工作原理，并且对致使锂
电池盛行的研究节奏进行了描述。每年数十亿的元件生产和数十亿的美元利润，可见移
动电子市场正在繁荣。在绿色能源中，锂电池也受到了新的挑战。费莱彻描述到发展下
一代锂电池的激烈竞争，但是可能更多的人选择现有的技术。
日益减少的石油资源以及备受关注的气候变化迫使我们使用更多的替代能源，比如太阳
能、风能，也不得不用混合动力车、油电混合车以及最终的全电动汽车来替代污染的内
燃汽车。由于我们的太阳不能按照我们的要求发光，风不能按照我们的意愿吹来，这些
可再生能源的成功应用依赖于我们高效的储电能力。电化学电池，特别是锂电池，成为
了最佳选择，因为它们把化学能转变为电能效率很高并且无有毒物质释放。
玻利维亚和南美国家巨大储量的碳酸锂盐可使汽... 阅读全帖 |
|
s******h
发帖数: 539 | 19 Nope, they are different and there's no simple implications about them.
"x and z are independent" only means that the joint density of x and z
is the product of the marginal densities of x and z, while "x and z are
conditionally independent" means the joint conditional density of x and z
when conditioned on y is the product of the conditional densities of x and z
conditioned on y respectively.
For example, consider the density:
C * (x + y)*(z + y) * I{(x, y, z) \in [0, 1]^3},
where C is the norm |
|
O**********e
发帖数: 69 | 20
计算Density Altitude, 考试考过的，
例如机场海拔6000 feet,
高度表设定2892,
当地气温26摄氏度
Density Altitude 计算如下：
Pressure altitude = 6000 + (29.92-28.92)*1000 = 7000 feet
标准气温 ISO temperature = 15 - (7000/1000)*2 = 1 摄氏度
Density Altitude = 7000 + (26-1)*120 = 10000 feet
可见整整比机场原来的高度高出3000feet
高Density Altitude有以下问题：
起飞降落的跑道长度要求要高出很多，
一定要查阅手册，检查天气报告，计算跑道长度要求。
从上面的公式可以看出气温对Density Altitude影响非常大，
有可能的话尽量选早上黄昏起降。
另外True Airspeed比Indicate Airspeed高很多，
可以用E6B计算尺算出，所以起飞降落目视速度要高很多，
但表速度相同，请保持正确的表速。
Mixture lean, 这个前面Trajan说了，空 |
|
K**********n
发帖数: 1197 | 21
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 |
|
发帖数: 1 | 22 Yarmouth Port, Massachusetts
From Wikipedia, the free encyclopedia
Yarmouth Port, Massachusetts
Census-designated place
Boardwalk at Bass Hole
Location in Barnstable County and the state ofMassachusetts.
Coordinates: 41°42′17″N 70°13′15″WCoordinates: 41°42′17″N 70°13′
15″W
Country United States
State Massachusetts
County Barnstable
Town Yarmouth
Area
• Total 6.47 sq mi (16.76 km2)
• Land 6.04 sq mi (15.65 km2)
• Water 0.43 sq mi (1.11 km2)
Elevation 52 f... 阅读全帖 |
|
发帖数: 1 | 23 在网上发现了一个圣诞节商店，商店的建筑很有特色，而且遍布全美国，大概有70多个
店铺，以后大家买圣诞节用品可以去那里，似乎各州都有。我们这里和麻州的地址是：
CHRISTMAS TREE SHOP AUGUSTA, GA, 239 ROBERT C. DANIEL JR. PARKWAY,
AUGUSTA EXCHANGE, AUGUSTA, GA 30909, 706.738.0570, CHRISTMAS TREE SHOP
, MAGNOLIA PARK, 1117 WOODRUFF ROAD, GREENVILLE, SC 29607. 864. 297.
3667
CHRISTMAS TREE SHOPS NATICK, 1298 WORCESTER ST. ROUTE 9, SHERWOOD
PLAZA, NATICK, MA 01760, 508.655.9800
CHRISTMAS TREE SHOPS SOMERVILLE, 177 MIDDLESEX AVENUE, ASSEMBLY SQUARE
... 阅读全帖 |
|
n******r
发帖数: 236 | 24 我纠正一下我的例子，应该只有一吨推力(1000 千克力)，忘了乘重力加速度(~10 m/s^
2)。所以代入公式的是10000 N.
如果你喷的是未加压的冷水，且喷向自由空间，基本上在流体力学上是free jet case,
i.e., the gauge pressure is ~0.你应该计算需要的喷速。
mass rate (m_dot) is 200 kg/s. Thrust T = m_dot*V. So V = T/m_dot = 20*1000*
10/200 = 1000 m/s.这是你需要的喷射速度。
继续分析这个设计，在喷口m_dot = density * V * area A.
如果假设水不可压缩，density 是个常数1000 kg/m^3.
你的火箭喷口面积 A = m_dot/(density*V)=200/(1000*1000)= 2e-4 m^2.
火箭的直径 ~1 cm!!
换句话说，如果你的喷水率固定(m_dot is fixed)，水作为工作物质密度不变(没有爆
燃),thrust = m_dot^2/(density * A).
如果你想保... 阅读全帖 |
|
A*******s
发帖数: 23 | 25 【 以下文字转载自 JobMarket 讨论区 】
发信人: AppleJobs ((can help refer)), 信区: JobMarket
标 题: [Apple Jobs]Power system, AC-DC, backlight driver
发信站: BBS 未名空间站 (Tue Feb 5 01:48:09 2013, 美东)
Send resume with position title to a****************[email protected]
Sr. AC-DC Designer
Sr. Power Systems Engineer
Sr DC-DC Power System Design Engineer
Sr. Backlight Driver Chip Definer
Sr. AC-DC Designer
Job Summary
Imagine what you could do here. At Apple, great ideas have a way of becoming
great products, services, and cus... 阅读全帖 |
|
A*******s
发帖数: 23 | 26 Send resume with position title to a****************[email protected]
Sr. AC-DC Designer
Sr. Power Systems Engineer
Sr DC-DC Power System Design Engineer
Sr. Backlight Driver Chip Definer
Sr. AC-DC Designer
Job Summary
Imagine what you could do here. At Apple, great ideas have a way of becoming
great products, services, and customer experiences very quickly. Bring
passion and dedication to your job and there's no telling what you could
accomplish.
Key Qualifications
See below
Description
Job Descripti... 阅读全帖 |
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w***n
发帖数: 150 | 27 From: International Journal of Hydrology Science and Technology
Title: Comparison between support vector machine and nonlinear regression
for predicting saturated hydraulic conductivity
Required by Mar 19, 2018.
Abstract
Saturated hydraulic conductivity (Ks) is playing an important role in
irrigation, and drainage. The aim of the study was to validate Pedotransfer
Functions (PTFs) using non-linear regression (NLR) and support vector
machine (SVM) for estimation Ks. Moreover, selecting the best p... 阅读全帖 |
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a*o
发帖数: 25262 | 28 http://www.time.com/time/health/article/0,8599,2069319,00.html
America's Environmental Garden Spot: Would You Believe Manhattan?
What's the greenest place in America? If you answered something like the
granola-crunchy, Rocky Mountain-high town of Boulder, you'd be wrong. If you
guessed the sea breezes and warm sunlight of Santa Barbara, you'd be wrong
again. The greenest place in America is almost devoid of nature — the
buildings outnumber the trees — and the air isn't all that great. But what
i... 阅读全帖 |
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A*******s
发帖数: 23 | 29 【 以下文字转载自 JobHunting 讨论区 】
发信人: AppleJobs ((can help refer)), 信区: JobHunting
标 题: [Apple Jobs]Power system, AC-DC, backlight driver (转载)
发信站: BBS 未名空间站 (Tue Feb 5 01:48:38 2013, 美东)
发信人: AppleJobs ((can help refer)), 信区: JobMarket
标 题: [Apple Jobs]Power system, AC-DC, backlight driver
发信站: BBS 未名空间站 (Tue Feb 5 01:48:09 2013, 美东)
Send resume with position title to a****************[email protected]
Sr. AC-DC Designer
Sr. Power Systems Engineer
Sr DC-DC Power System Design Engineer
Sr. Backlight Dri... 阅读全帖 |
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p**2
发帖数: 87 | 30 样品
26.4g, 69mmX39mmX5m
比重: 2.8 =(26.4/9.5)/.99 (tap water 比重)
硬度 ~ 6; (系统误差, 操作误差 都比 比重 大)
The density measurement is quite accurate.
I measured the density of my easy to identify stones, and they all fit into
their standard density range.
As a density reference:
Serpentine: 2.5-2.6.
Quartz type stone: 2.65 in pure crystal; variable 2.59–2.63 in impure
varieties
The hardness measurement is not accurate at all.
It is from comparing my other samples, such as quartz crystal, rose quartz,
tiger's e... 阅读全帖 |
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w*******r
发帖数: 36 | 31 herosa was correct, the aperture does NOT change, period. It is a property
of the lens, which has zero correlation with the sensor behind it, being CCD
/CMOS or film.
it's not complicated, just make sure you compare apple to apple first, then
start varying things. the apple here is the pixel size of the sensor.
what aperture decides (together with focus distance) is the light density
after the lens, a bigger sensor collects more light energy than a small
sensor in the same period of time (shutte... 阅读全帖 |
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c********e
发帖数: 1740 | 32 要卖些不用的或多余的东西，好久不玩买卖了，价格不对，就给出你的offer。多谢了。
照片清单请看这里
http://www.fredmiranda.com/forum/topic/1270441/0#12102346
Canon 2X-sale is pending; P-series-sale is pending. Thanks.
a Used Canon 2X extender II for sale, Excellent condition. The original box
and pounch are included.
$225, free shipping to CONUS with USPS
附件是用2X出的片子。
-----------------------------
A set of P-series cokin filter holder and HiTech filters is for sale.
Lightly used, in excellent condition.
including:
Cokin P-series filter Holder: ... 阅读全帖 |
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b**e
发帖数: 492 | 33 理由如下：4×（9.7／7.85）=4.94≈5！
所以苹果明天会推出两款iPhone，一个4寸，一个5寸！
4寸还是跟4S一样的pixel density，1136×640分辨率。
5寸是跟iPad 3一样的pixel density，也是1136×640分辨率。
类似于从iPad 2到iPad mini，分辨率不变；5寸iPhone跟4寸iPhone
分辨率一样，apps不需要重写，只是图标变大到iPad那种。
其它方面基本上完全一样，价格也一样，顾客自己选，
想要high pixel density，选4寸，
想要larger display，选5寸。
明年或者后年再推出5寸提升分辨率的版本，跟4S一样的pixel density，
不过这个就需要重写apps了，当然也没有那么难。 |
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o******s
发帖数: 1364 | 34 If there is a density stratification to start with, then heating from bottom
can cause irreversible mixing
that moves higher density parcels up and average with lower density parcels.
Then these parcels would not fall down because they have less density.
Hence potential energy will be deposited.
This is of course assuming that heating from computer would sustain. If
computer is off, then the air will restratify and potential energy will be
released.
So it all depends on how the problem is set up... 阅读全帖 |
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c**********g
发帖数: 222 | 35 这篇文章做了至少十条假设，很多不靠谱，做天文的没几个人信，做暗物质探测的倒是
挺当回事。不过到底惊动了Scott Tremaine发文驳斥。他们的结论完全相反，太阳系周
围不仅有暗物质，而且跟LCDM预言一致。
http://arxiv.org/abs/1205.4033
Jo Bovy, Scott Tremaine
On the local dark matter density
An analysis of the kinematics of 412 stars at 1-4 kpc from the Galactic mid-
plane by Moni Bidin et al. (2012) has claimed to derive a local density of
dark matter that is an order of magnitude below standard expectations. We
show that this result is incorrect and that it arises from the invalid
assumptio... 阅读全帖 |
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j*****d
发帖数: 787 | 36 http://the-scientist.com/2011/09/20/plant-rnas-found-in-mammals
+Plant RNAs Found in Mammals
MicroRNAs from plants accumulate in mammalian blood and tissues, where they
can regulate gene expression.
By Cristina Luiggi | September 20, 2011
11 Comments Link thisStumbleTweet thisDreamstime.com, Rewat
WannasukMicroRNAs from common plant crops such as rice and cabbage can be
found in the blood and tissues of humans and other plant-eating mammals,
according to a study published today in Cell Research.... 阅读全帖 |
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d********m
发帖数: 3662 | 37 统计上来讲，一切都是density estimation，你自己想想有哪几个variables，弄几个
assumptions，构建joint density，然后再想想哪些方法可以estimate
conditional density，哪些就能做预测了。这个看起来就是个classification的问题
，方法取决于你对于表达量density function assumption。 |
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K**********n
发帖数: 1197 | 38 学术界珍稀有限的原版外文资料，
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 Seafarer; emissions of high power lines and video display
terminals; radar and other military and industrial sources of radio
frequencies and micr... 阅读全帖 |
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d****r
发帖数: 135 | 39 independent 的话一定是normal。你可以随便设出两个normal distribution r.v.，然
后利用independence得到两个r.v.的乘积density function，进一步用积分计算他们的
和的density function，你会发现还是一个normal的density function。这个计算不难。
楼上给出的例子不是一个反例。因为nomarl distribution 有一个极限情况，可以被认
为是variance趋向无穷的情况。而那个反例恰好就是这样子的，它的density function
是在0点blow up，其它点值为0，这个在一些讲广义函数的书里被叫做delta 函数。因
为正规normal distribution实际上是热方程在一维情况下，初值为delta函数的基本解
的图像（似乎差个scalar），因此delta 函数恰好就是一个极限状态的normal
distribution。 |
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H****h
发帖数: 1037 | 40 The joint density function of x,y,z does not exist.
Think of the following easier example.
Given the density function of x. Suppose y=x.
What is the joint density function of x,y?
The answer is that the joint density function does not exist. |
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z**********g
发帖数: 16 | 41 Discussing The Existence of “repulsion particle” And Its Significance
Zhuang Yiliong
Shanghai Institute of Science and Technology Management
Abstract:This report has advanced a assume about the existence of “
repellention” by a kind of new idea. Beginning with this, I have explained
more successfully some import theory questions in the area of the present
physics, cosmology and philosophy ect. At same time a few of new reasons
have been raised But this is only rough idea of physica... 阅读全帖 |
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发帖数: 1 | 42 QUANTUM SPACE ELEMENTS (QSE)
INTRODUCTION
This is a non-mathematical proposal introducing a cosmological model that is
cyclic, deterministic and infinity-free. For the purpose of achieving this
objective a number of new concepts are introduced. The framework of this
proposal is structured over a number of assumptions, leading to various
considerations of cosmological concerns. Furthermore, verification methods
are suggested of both, observational and mathematical nature.
ASSUMPTIONS
Space is dis... 阅读全帖 |
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K***6
发帖数: 155 | 43 【 以下文字转载自 Biology 讨论区 】
发信人: KS106 (KS), 信区: Biology
标 题: 数据处理的问题，大家帮帮忙！
发信站: BBS 未名空间站 (Mon May 25 00:19:38 2009)
太久没有碰这一块，感觉脑袋都不大好使了！
老板让我分析一套数据，他想要的是比较 nerve density (Old vs. Young).
动物做完切片后，immunohistochemistry,然后CONFOCAL拍照，现在OLD and Young各有
三只（Y1, Y2, Y3 and O1, O2, O3),每一只我选取了4张效果比较好的照片，然后用一
种分析软件，先把要分析的区域圈起来，然后count # of nerves & slelected area,
然后就可以算出density (# of nerves/uint area),问题是老板让我把所有的density
平均值，再比较old vs.young 的差异，可是在selected area 不相同的情况下，
density怎么可以取平均值呢？后来我想，若是把所有# of nerv |
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p*******1
发帖数: 102 | 44 开医院很复杂，洛杉矶有个医院在CULVER CITY，叫作BROTMAN MEDICAL CENTER，2007
年的时候破产了，但是它在的CULVER CITY是个中产阶级社区，平均收入有7-8万刀一年
的，是在洛杉矶的西边。它有400多张LICENSED的床位，居然破产了。开医院很复杂，
很复杂.
Demographics
2010
The 2010 United States Census[41] reported that Culver City had a population
of 38,883. The population density was 7,566.0 people per square mile (2,921
.2/km²). The racial makeup of Culver City was 23,450 (60.3%) White, 3,
694 (9.5%) African American, 191 (0.5%) Native American, 5,742 (14.8%) Asian
, 81 (0.2%) Pacific Isla... 阅读全帖 |
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