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全部话题 - 话题: spatial
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C******n
发帖数: 284
1
Take a look at Goldstein and Browne's work on cross-classified and multiple
membership model, for example:
Browne, William and Harvey Goldstein. 2010. "MCMC Sampling for a Multilevel
Model With Nonindependent Residuals Within and Between Cluster Units."
Journal of Educational and Behavioral Statistics 35:453-473.

rate.
a*********n
发帖数: 1331
2
谢楼上两位的回复。 包子已发两位。
a*********n
发帖数: 1331
3
The dependent variable follows negative binomial distribution. xtmixed seems
apply to multilevel linear modeling. xtmixed still working in my project?

maybe
p*********u
发帖数: 219
4
没有弄清楚楼主具体的问题,我是搞GIS的有时候也用到模型,如果都可以用图层表达
的话,是否可以考虑用R(里面有很过现成的模型(多种类型的Regression)?有一个
email list:R-sig-Geo 是个很好发问的地方。
D***e
发帖数: 21
p********1
发帖数: 1011
6
没人知道吗?
M*P
发帖数: 6456
7
统计版吧

★ 发自iPhone App: ChineseWeb 7.8
p********1
发帖数: 1011
8
这里高人多,所以到这里问:)
p********1
发帖数: 1011
9
有现成的package或命令做吗? 我不会programming.
s*******1
发帖数: 146
10
Geoda不用编程,按照例子把数据调入就可以了。
https://geodacenter.asu.edu/og_tutorials
s*******1
发帖数: 146
11
试试把数据一年一年分开算。
或用 R splm package,需要编点程序。
p********1
发帖数: 1011
12
忘了说了,数据是每年一个数/census tract,也就是说对于每个census tract有20个
数对应20年,for every variable。
H****y
发帖数: 2992
13
谢谢胖老师!说实话,有人肯读我就很高兴了。胖老师还总是提这么多好意见。
关于这个反重力物质,我特意去查了一下,好像真有很多人拿这个当成课题来研究,尤
其上世纪五十年代。当然,目前所有“进展”,大部分都还是基于理论和假设。
先说容易混淆的,很多人认为,一是磁悬浮,这大家都知道。二是最近日本演示的超声
波悬浮,但只能浮小豆豆(不是本版那个豆豆)之类的东西。不过wiki上关于anti-
gravity的严格定义是这样的:Anti-gravity is an idea of creating a place or
object that is free from the force of gravity. It does not refer to the lack
of weight under gravity experienced in free fall or orbit, or to balancing
the force of gravity with some other force, such as electromagnetism or
aerodynamic lift.
关于... 阅读全帖
H****y
发帖数: 2992
14
出去开会。会还没开完,就搞了这么个东西出来。职业病呀!

On Poster Presentation
“I think the first duty of all art, …, is to entertain. That is to say, to
hold interest. No matter how worthy the message of something, if it's dull,
you're just not communicating. “ (Poul Anderson)
Poster presentation may sometimes bear an “inferior” look compared with
oral presentation. Yes, you don’t get that collective attention from dozens
or hundreds of people in a quiet room. You can’t play soun... 阅读全帖
p*******g
发帖数: 809
15
DUYGU KUZUM received her Ph.D in Electrical Engineering from
Stanford University in 2010. She is currently a postdoctoral researcher at
University of Pennsylvania, Bioengineering Department. Her research focuses
on applying innovations in nanoelectronics to develop new technologies,
which
will help to better understand circuit-level computation in the brain. She
developed nanoelectronic synaptic devices emulating the synaptic computation
and plasticity in human brain. This technology could lead ... 阅读全帖
c*********l
发帖数: 926
16
【 以下文字转载自 Military 讨论区 】
发信人: xuedi2006 (southman), 信区: Military
标 题: 又一中国科学家被FBI调查
发信站: BBS 未名空间站 (Tue Sep 8 09:43:11 2015, 美东)
http://www.dispatch.com/content/stories/local/2015/09/08/fbi-in
FBI investigates China ties of Ohio State professor who resigned,
disappeared
Professor Rongxing Li was a star at Ohio State University, attracting
international attention as he helped NASA rovers explore Mars in the past
decade.
Then, early last year, Li quit his post as OSU’s premier mapping expert and... 阅读全帖
z***t
发帖数: 2374
17
来自主题: Faculty版 - 钱璐璐快五年没发paper了
Parallel and scalable computation and spatial dynamics with DNA-based
chemical reaction networks on a surface
2014
好像还是有一片篇啊
a*****g
发帖数: 19398
18
来自主题: Faculty版 - 请求帮忙下载个文章
Building Blocks for Developing Spatial Skills: Evidence From a Large,
Representative U.S. Sample
a*****g
发帖数: 19398
19
来自主题: Faculty版 - 请求帮忙下载个文章
谢谢啦
正在研究围棋和 spatial thinking
发你私信了

发帖数: 1
20
来自主题: Faculty版 - Jan's lab : 这里有弟子么?

Download pdf published by SfN (Chapter from 'The History of Neuroscience in
Autobiography, Volume 8' edited by Larry R. Squire)
Yuh-Nung Jan's CV
Lily Jan's CV
Yuh-Nung Jan and Lily Jan
Birth
Family History and Growing Up
National Taiwan University
The Hiking Trip to Shitou in the Spring of 1967
Graduate School Application
Graduate Study at Caltech (1968锟974)
Seymour Benzer Lab (1974锟977)
Steve Kuffler锟絪 Lab at H... 阅读全帖

发帖数: 1
21
这个第三作的文章,比较有意思。。 在正常人身上做的这个working memory 的测试,
很有意思。。。这402 healthy adults的取材比较讲究吧,。。她是遗传系的。。为什
么不找家族(pedigree)来做这个实验,这样结果会更丰富。。不是都说,精神病
scheziphina是遗传的吗?
欢迎,各位老师加入讨论啊。。。
Catechol-O-methyltransferase (COMT) genotypes and working memory:
associations with differing cognitive operations.
Bruder GE1, Keilp JG, Xu H, Shikhman M, Schori E, Gorman JM, Gilliam TC.
Author information
Abstract
BACKGROUND:
Catechol-O-methyltransferase (COMT) is a strong candidate gene for
schizophrenia and cognitive functi... 阅读全帖
p******s
发帖数: 107
22
【 以下文字转载自 NewYork 讨论区 】
发信人: partybos (partybos), 信区: NewYork
标 题: 【供求】纽约天才班K和1st Grade入学考试全套复习题
发信站: BBS 未名空间站 (Mon May 5 17:10:38 2014, 美东)
朋友买的全套正版,他孩子用完了。有要的朋友站内信。
全套包括下面的书 -
Gifted And Talented Assessment K and 1st Grade
NNAT 2 Level A Practice Test1 K
NNAT 2 Level A Practice Test2 K
OLSAT Practice Test Level A Test1 K and 1st Grade
OLSAT Practice Test Level A Test2 K and 1st Grade
NNAT 2 Preparation
OLSAT Preparation Guide II Instruction
OLSAT Preparation Guide II (Level A)
Workbook for ... 阅读全帖
a*****t
发帖数: 30
23
There are currently available two funded research assistantships in the
Department of Spatial Information Science and Engineering, University of
Maine, USA. Students will be working with advisor Prof. Mike Worboys.
Students will register for the degree of PhD. The funding will cover a
stipend, tuition expenses, and a contribution to health insurance.
The first position relates to a recent project funded by the US National
Science Foundation entitled "Information integration and human interaction
g****g
发帖数: 1828
24
【 以下文字转载自 shopping 讨论区 】
发信人: gengwg (megaOr), 信区: shopping
标 题: Sennheiser HD 598 Audiophile Headphones w/ High Gloss Burl
发信站: BBS 未名空间站 (Fri Feb 11 01:29:51 2011, 美东)
Sennheiser HD 598 Audiophile Headphones w/ High Gloss Burl Wood Accents $164
.75
http://www.electronics-expo.com/m...598/1.html
Electronics Expo has the Sennheiser HD 598 Audiophile Headphones w/ High
Gloss Burl Wood Accents for $164.75 after Coupon Code: LSDA0207 (Exp 3/1). $
6.99 Shipping. Tax in NJ.
High-end open circumaural... 阅读全帖
t*****e
发帖数: 2206
25
http://www.costco.com/Vizio-60%22-Class-%2860.0%22-Diag.%29-4K-
$1,399.99
Stunning Ultra HD picture – Experience incredible detail and clarity
with 8.3 million pixels and 4x the resolution of 1080p Full HD.
Spatial Scaling Engine – Beautifully transforms 1080p Full HD sports,
movies and TV shows to spectacular 4K Ultra HD resolution.
V6 Six-Core Processor – Quad-core GPU and Dual-core CPU for blazing
fast performance and faster, smoother Smart TV experience.
Active LED Zones͐... 阅读全帖

发帖数: 1
26
版权声明:
本文内容采自网络, 不保留版权, 欢迎转载, 不必支付稿酬.
转载时可用 “佚名”取代作者名字, 或替换成您自己的网名即可。
俺读书少, 俺绝对不怕承认。
俺有时候犹豫和纳闷,三个表都测不出来的电源线造成的“声场”、“结像”区别,
为什么网上的大师能听出来。
于是俺逮到机会又问了,
“老乡,三个表都测不出来的电源线造成的“声场”、“结像”, 为什么网上的大师
能听出来? ”
瘦子说,
“ 井蛙了吧。 “声场”、“结像”绝对不是玄学, 是科学啦。确切地说是心理声学
(Psychoacoustics)的范畴。
杜比实验室环绕声认证标准的科学基础之一就是心理声学的研究结果。
http://www.ece.ucdavis.edu/cipic/spatial-sound/hrtf-data/
http://recherche.ircam.fr/equipes/salles/listen/
看看这个视频, 心理暗示的惊人作用
https://www.youtube.com/watch?v=BYTlN6wjcvQ&t=433s
另外, 心理暗示作用下。大师只要下定决心听出“声场... 阅读全帖
x********y
发帖数: 125
27
One room in two bedroom will be available at Sep 5 for long term sublet.
Prefer one year at least half year.
The bedroom is spatial around 22~24 square and has wide window face to
Riverside Part.
The apartment located at the corner between Riverside Dr & Tiemann. less
than 10 min walk to CU main campus.
Rents is $1,100 + utility.
If interested please write a email to j*****[email protected] first.
s********2
发帖数: 106
28
来自主题: HouseRental版 - 1 lg bedroom for rent at jersey city, PATH
ADDRESS: 66 Newkirk St at Summit ave, jersey city, NJ 07306
just three blocks away from the journal square path station---check the
google
map, three minutes from the JSQ station. From and to JSQ station will take
you to WTC, 33rd Street, Newark and Hoboken Directly all within 20 minutes.
two-floor house. large room, monthly rent $400. utilities(water,electricity,
gas)are not included, usually $30-40 per person per month.
the large bedroom room is spatial. It has two windows and a closet.
the fi
z****a
发帖数: 37
29
穿上马甲来发小广告,请大家忽略我半中半英写得乱七八糟^_^
(在华盛顿特区(WashingtonDC)版我也有发,而且那里有照片)
A spatial walk-out room in our lovely townhome. Great Location, available
from Feb. 15th.租金600美刀每月,全包。(我也不知道这个价钱合不合适,欢迎看了以后商量:)
Location:
- Gallows rd & Madron Ln
- Safe and quiet neighborhood in Vienna, very close to Tysons Corner
shopping mall and office area (within walking distance!).
- less than 5 minutes drive to I-495
- 5 minutes drive to Dunn Loring Metro station on orange line (or 5 minutes
bus, bus stop is just cross the
x********y
发帖数: 125
30
One room is available from May31 to July 1. The other room is open to
both short and long term (one year release) sublet.
- Rents $1050 for each one, including all the utility and high speed
internet.
- Located at Riberside driver & TIEMANN PI, 10 minutes walk to
Columbia campus, 2 minute to 125 metro station. Safe and convenient.
Google map link.
http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=549+River...
- Two spatial bedroom (each one 15mm2), large windows with beautiful Riversi
x********y
发帖数: 125
31
The room is available from May30, open to both short and long term (one year
release prefer) sublet.
- Rents $1050, including(for short term)/excluding(for long term) all the ut
ility and high speed internet.
- Located at Riberside driver & TIEMANN PI, 10 minutes walk to
Columbia campus, 2 minute to 125 metro station. Safe and convenient.
Google map link.
http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=549+River...
- Spatial bedroom (around 15mm2), large windows, plentiful sun shine
x********y
发帖数: 125
32
The room is available right away, it is open to weekly or daily short
term sublet.
- Rents is changing with the rental time $30/day, $200/day, and $450
for all 17days. including all the utility and high speed internet.
- Located at 549 Riberside Dr, 10 minutes walk to Columbia campus, 2
minute to 125 metro station. Safe and convenient.
Google map link from CU campus to My apartment.
- Spatial bedroom (15mm2), large windows, plentiful sun shine and
riverside park view.
- Furniture: queen size bed
x********y
发帖数: 125
33
1 male room in 2br on campus apt is available at Aug 1 for long term sublet
It is also open to short term sublet(up to Sep1)
- Rents: $1050/m excluding utility and high speed internet.
- Location: 549 Riverside Dr, 10 minutes walk to Columbia campus, 2 minute
to 1
25 metro station. Safe and convenient.
- Neighborhood: All your the neighbor are CU student or faculty. Safe and
quite
.
- Spatial bedroom (15mm2), large windows, plentiful sun shine and riverside
par
k view.
- Furniture: unfurnished
x********y
发帖数: 125
34
This is a slave bedroom in 2 bedroom apartment, you will share this room
with a
nother Columbia EE graduate student.
ATTN: the room currently only open to long term sublet(perfer one year)
- Rents: $1050/m excluding utility and high speed internet.
- Location: 549 Riverside Dr, 10 minutes walk to Columbia campus, 2 minute
to 1
25 metro station. Safe and convenient.
- Neighborhood: All your the neighbor are CU student or faculty. Safe and
quite
.
- Spatial bedroom (15mm2), large windows, plentif
g*******y
发帖数: 1930
35
来自主题: JobHunting版 - 问道题
to be honest, I did this problem with a hint of using queue. My initial attempt w/o this hint ended up in a wrong direction (spatial lattice)
Besides, this problem is quite classical, I've seen it at least twice before (now it makes at least three times)
H*M
发帖数: 1268
36
来自主题: JobHunting版 - 问道题
cool..where did u see it? just curious.
I am starting to look at questions in zhiyebei
any other websites we can get trained?

attempt w/o this hint ended up in a wrong direction (spatial lattice)
before (now it makes at least three times)
N***V
发帖数: 211
37
来自主题: JobHunting版 - 攒人品:一些找工作的经验
决定把我的qualification贴出来,抛砖引玉,希望lz和其他同学多给意见,先谢过!
个人背景:统计master,5月刚毕业,一直做TA,给学生上课。去年暑假帮老师做过一
个项目,没有其他research 经验。优点是GPA4.0。
QUALIFICATIONS
* Data Analysis
-- 2 years data analysis experience. Proficient in using mainstream data
analysis packages (SAS and R)
* Statistical Modeling
-- 5+ projects in modeling categorical, spatial and time series data;
Completed extensive coursework in statistical modeling
* Programming
-- Strong R programming skill; 4+ years programming experience with C
v*****k
发帖数: 7798
38
来自主题: JobHunting版 - Job oppotunity: Senior Java developer
A start-up close to Los Angeles is hiring Senior Software Developers and
Senior Web Application Developers. Please send your resume to
v*****[email protected]
Senior Software Developer:
Responsibilities
Build and design desktop Java applications (e.g., data import,
conversion, text matching and integration utilities) for Windows
Design, implement, test, document, and support software technologies
that extend the Geosemble GeoXray product.
Work closely with other software engineers, research directors ... 阅读全帖
a*o
发帖数: 54
39
来自主题: JobHunting版 - 尘埃落定(MGF的面试总结)
长流水帐,摘要是拿了G、F、M的面试,其中G、M给了offer,最后选择了M,期间两家
公司相互提价,一共给了5个offer。最后是三家的面试题目。
先说下个人背景,国内本硕毕业后06年加入微软中国,后来一直在北京。其实生活也算
可以,有车有房有lp,比上不足比下有余,但觉得还是趁不算太老,出来呆一阵,涨涨
经验吧。
起先觉得唯一靠谱的就是内部transfer,联系了bing的一个dev lead后,很希望我来,
于是开始安排面试,一轮phone screen外加五轮面试,当然,由于远程,其实形式都是
一样的。中间因为各种原因,进程比较慢,搞了好几个月直到我6月要来总部出差之前
,才面完最后一轮。招我的lead说问题不大,但由于只有一个名额,他的经理想多面几
个再定,于是让我等一下。这一等也就等出了后面一堆的事情。
4月正在联系transfer时,g的hr突然通过linkedin找到我,问是否有兴趣。看他是mtv
的,抱着多面一个多练练手的心态,就说好吧。很快就安排了两轮电面,通过后大约5
月中旬了,让我去on-site,由于马上出差,商量好等我到了seattle,从那里飞。
6月到了... 阅读全帖
s*****n
发帖数: 5488
40
开始随机取k点,加入heap.建立bounding box. MBB(k)
性质:MBB(k) monotonically shrinks.
filering: if p(k) is not in MBB(k), discard.
这个计算会越来越快。因为MBB越来越小。
什么组,要考spatial index方面的知识?
r*****d
发帖数: 1924
41
【 以下文字转载自 WashingtonDC 讨论区 】
发信人: Westridge (西岭), 信区: WashingtonDC
标 题: Java开发人员知识点(更新)
发信站: BBS 未名空间站 (Wed Apr 18 00:03:19 2012, 美东)
Java开发人员知识点
1.听说过James Gosling,SUN和Oracle公司。知道网上下载Java的地址,在哪讨论Java
。练习过Java在Windows下的安装和配置。知道Java应用系统中常见的几种license和JCP。了
解bytecode和Java在不同系统下可以轻松移植的原理。
2.懂得基本的Java编程和行命令格式。了解面向对象的编程思路。
几个基本点:Java基本语法和控制结构,命名和代码风格,结构化,对象封装,继承,
抽象,多态,接口,异常处理,堆空间,栈空间,垃圾回收器,static,this,
synchronized,annotations,JUnit,JDBC,JSP/servlet
Java Core APIs: java.lang,java.util,java.io,java.a... 阅读全帖
l*****a
发帖数: 559
42
来自主题: JobHunting版 - 好几天没看见新题了
Spatial search有专门的R+tree。
http://en.wikipedia.org/wiki/R%2B_tree
i**d
发帖数: 357
43
来自主题: JobHunting版 - F家一道设计题
应该主要考察geo-search吧。考察你怎么index spatial data. relevance不是主要。
但是说了肯定是加分的。
y***5
发帖数: 21
44
结果:面试7家,5 onsite,3 offer。
面经:
Amazon:2轮电面,5轮onsite。2天后offer,最后decline,非常nice的manager(拿到
A offer时还在面其它公司,比较大度地祝我good luck),拒绝的时候感情上比较难受。
电面1,设计parking lot
2, intersection of sorted int array; design data structure for a phone
contact book
onsite 1: find biggest int in array,
find K biggest int in array(tradeoff between many methods),
implement using heap
2: print modification path from "head" to "tail", given isWord()
api and every time can modify 1 word in the strin... 阅读全帖
x***z
发帖数: 89
45
【 以下文字转载自 CS 讨论区 】
发信人: xtyoz (xtyoz), 信区: CS
标 题: 有关CS课程选择,请大牛帮忙看一下
发信站: BBS 未名空间站 (Fri Apr 26 20:05:51 2013, 美东)
MS要修10门课,下面是领域分类及其相关课程(学校提供的),请大牛帮我选十门最要
紧最实用,最容易找工作的课,谢谢!
提供课程对应的编号即可(其中中文是我自己翻译上去的):
领域一: (PFL) Programming and Formal Languages编程和形式语言:
1)ADV PROGRAMMING LANGS 高级编程语言; 2)COMPILER CONSTRUCTION编译器构造

3)SOFTWARE ENGINEERING软件工程 4)SOFTWARE MEASUREMENT 软件测试
5)OBJECT-ORIENTED PROG面向对象的编程 6)PROGRAMMING FOR GIS地理信息系
统编程
7)ONLINE DOC & HELP SYSTEMS 在线文档和帮助系统
8)XML FOR M... 阅读全帖
y*c
发帖数: 904
46
来自主题: JobHunting版 - f design question 求讨论
首先数据库要是spatial的,就是上面所说的geohash的,给一个geohash/quadkey, 能
拿到所有的POI,但是拿到之后,内存里可能需要做更小规模的filter, R-tree based
algorithm管用。
y*c
发帖数: 904
47
来自主题: JobHunting版 - f design question 求讨论
首先数据库要是spatial的,就是上面所说的geohash的,给一个geohash/quadkey, 能
拿到所有的POI,但是拿到之后,内存里可能需要做更小规模的filter, R-tree based
algorithm管用。
s******n
发帖数: 340
48
来自主题: JobHunting版 - 求指点,能在三藩找到工作么?
我想搬来三藩。想请大家指点一下,我这样背景在三藩能在哪种公司找到工作,大体收
入能有多少。过去几年经常飞,有点累了,想在local 找份工作。
我现在在一家咨询公司里做Manager, 有8年工作经验, 过去几年主要做System
Deployment, System Integration 的 implementation,还有Utility 公司的Asset
Analytics (不是金融行业的Asset)。会点SAP, Spatial Analysis, Oracle 数据库
和 BI。以前编程主要用过.Net 和Oracle PLSQL.
希望大家不吝赐教,十分感谢。
s*****y
发帖数: 32
49
来自主题: JobHunting版 - 公司招人 (转载)
Hi Paperdog,
I am referenced by my friend that you are looking for an Analyst with
quantitative background, which is rather interesting to me.
First of all, I am a programming engineer with 8 years of extensive data
modelling and processing experience, and am particularly adept at working
with big data, optimization, high performance (parallel/multithread)
computing, machine learning, and numerical methods. I am proficient with
Matlab, C#, Java, and VBA.
Second, I have been rigorously trained in... 阅读全帖
l****y
发帖数: 5
50
working place is at Shanghai but with U.S. salary/compensation standard. The
candidate should speak Chinese/Mandarin. Some of the cases you only need
to stay in Shanghai for less than 6 months.
Interested party, please email resume to parkingsv(AT)yahoo.com
-----
Job description
The candidate will be responsible for the architecture and ASIC design and
co-verification of various 802.11 wireless baseband IPs within current and
next generation wireless products. The candidate will work within the ... 阅读全帖
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