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Showing posts with label 网络资源. Show all posts
Showing posts with label 网络资源. Show all posts

Tuesday, August 28, 2007

New wiki system start

tedious with the googlecode wiki, i find this one more professional. and the community wiki will move to wetpaint soon. welcome to join it.

http://openwsn.wetpaint.com/
.

Sunday, August 26, 2007

Squidbee, An startup company and open community

Dear Sirs,
we are Libelium, a spinoff company of the University of Zaragoza (Spain),

we know your work in the field of Sensor Networks with the OpenWSN project and we thought you may have interest in a new project we have developed. It is called SquidBee : http://www.squidbee.org

It is an open *Hardware* and Software mote which tries to set a common device for the Universities and Research Centers which are developing Sensor Networks. It is also a teaching platform because students can study and change any part of it.

We have set two ways in order to create a live community on the research
of open source and hardware sensor networks:

1? A wiki where each research group can upload all the information of
their projects related with SquidBee, ZigBee, sensors,...
2? Mailing lists:
- A news mailing list to receive just the advances in the
SquidBee project
- A hacking mailing list for everybody to post all the
questions, motivations....derived from the development of a project


Regards.

David Gascón.

--
David Gascón Cabrejas
Departamento de Investigación y Desarrollo
Libelium Comunicaciones Distribuidas
http://www.libelium.com

Friday, July 13, 2007

推荐一个适合大规模WSN网络研究的仿真软件JiST/SWAN

推荐一个适合大规模WSN网络研究的仿真软件

JiST/SWAN
Java in Simulation Time / Scalable Wireless Ad hoc Network Simulator
http://jist.ece.cornell.edu/

对仿真软件原理有兴趣的同学可以参考
http://jist.ece.cornell.edu/related.html

最大的缺点是作者从Cornell博士毕业后, 不知这个软件的后续维护怎么处理的.

Event throughput Memory footprint
5 million events
time (sec)
vs. baseline
vs. JiST

baseline
0.738
1.00x
0.76x
JiST
0.970
1.31x
1.00x
Parsec
1.907
2.59x
1.97x
ns2-C
3.260
4.42x
3.36x
GloMoSim
9.539
12.93x
9.84x
ns2-Tcl
76.558
103.81x
78.97x
memory
per entity
per event
10K node sim.

JiST
36B
36B
21MB
GloMoSim
36B
64B
35MB
ns2
544B
40B *
74MB
Parsec
28536B
64B
2885MB

SWANS performance
nodes
simulator
time
memory

500
SWANS (hier)
43 s
1,101 KB


GloMoSim
82 s
5,759 KB


ns2
7136 s
5,8761 KB

5,000
SWANS (hier)
430 s
5,284 KB


GloMoSim
6191 s
27,570 KB

50,000
SWANS (hier)
4377 s
49,262 KB



1,000,000
SWANS (hier)
--
933 MB
.

网络资源: 倪老师的BLOG -- WSNs专题 *

网络资源: 倪老师的BLOG -- WSNs专题(着重推荐)
http://sunny.space.univs.cn

试试这个链接行不行
花之幽雅
花之幽雅
.

网络资源: 上海市计算技术研究所研发三部

上海市计算技术研究所研发三部,前身是上海计算所无线传感器网络课题组
http://211.144.96.153/

发布了一个露天型WSN节点测试
http://211.144.96.153/dltn/dltn.html

网络资源:中国科学院嘉兴无线传感网工程中心

中国科学院嘉兴无线传感网工程中心
http://www.wsn.cn/Index.html
不过,没有为研究提供更多的开放资源.

其所提出的WSN协议栈架构:
http://www.wsn.cn/duiwaixiaoshou/wanglxyi/200702/duiwaixiaoshou_20070206172001.html

我的建议:
- 休眠事实上是全节点的问题,MAC要支持休眠,但休眠的管理应该由更上层介入,不仅仅是MAC自己的事情
- 任务管理和资源分配模块的位置是否合适?

Thursday, July 12, 2007

国内的嵌入式系统小组活动

SkyEye Project by Dr. ChenYu
http://www.skyeye.org/index.shtml

AKA
http://www.aka.org.cn AKA 主站
http://www.akaembed.org AKA 小组嵌入式资源站
http://www.akae.cn AKA 嵌入式开放实验室 (AKAE嵌入式研究中心)

FTP:aka.org.cn  Mirror1:263.aka.org.cn
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