BEIJING, China (CNN) -- The death toll from a coal mine blast in northern China climbed Sunday to 74, the state-run media Xinhua News Agency said.
Some 114 miners were hospitalized as a result of the incident, including six miners in critical condition, said Xinhua.
The number of deaths rose as rescue workers continued to pull victims from the shaft of the mine in Shanxi province, where dozens of miners remained trapped.
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The blast occurred at about 2 a.m. Sunday (1 p.m. ET Saturday) near the provincial capital, Taiyuan, Xinhua said.
The mine -- one of China's largest coal producers -- has an annual production capacity of 5 million tons. It is operated by the Shanxi Coking Coal Group, Xinhua said.
They never regard life as a precious thing, or they just regard their lives precious. Higher-level ppl's lives are always valuable than lower-level ppl's, rich's lives are always valuable than poor's, urban ppl's lives are always valuable than rural ppl's.
They never understand that everyone's life should have equal respect, shame on them.
Sunday, February 22, 2009
Friday, February 13, 2009
Projects of Internet Measurement
CAIDA: The Cooperative Association for Internet Data Analysis
DIMES
Chris Harrison's Internet Map
IPv4 Address Report
BGP Report
iPlane: An Information Plane for Distributed Services
Rocketfuel: An ISP Topology Mapping Engine
INTEL/DANTE (Delivery of Advanced Network Technology to Europe)
Sarangworld Traceroute Project Pattern Matching
Route Views
Some method to measure:
latency: RTT
pkt loss: active probing
IP geo-location: whois, coutry, city, and ZIP code(CAIDA NetGeo)..
link bandwidth: pkt dispersion (equal size pkt pair/train), P2P peers' uploading rate to me(iPlane)..
link capacity: varying the size of pkt pair (pathchar).
active probing pkt: ICMP-more dests, UDP-more links, least dests(CAIDA's Ark@CATCH).
Some paper notes:
1. CAIDA's Ark@CATCH, Internet Mapping: from Art to Science
-31 monitors, LINDA-like coordination structure
-mainly traceroute to every /24 to get router-level topology
-UDP probing for router alias resolution
-then map to AS-level using BGP info from Routeview
-rDNS to get geo-info and etc.
2. CAIDA@SIGCOMM'05 workshop: Classifying the Types of Autonomous Systems in the Internet
Companies: 41.6%
ISP: 34.33%
Univ.: 10.49%
NIC(Network Information Center): 6.86%
3. CAIDA@SIGCOMM'07 CCR: AS Relationships: Inference and Validation
c2p(customer to provider): 3070
p2p(peer to peer): 623
s2s(sibling to sibling): 31
4. CAIDA: Measuring the use of IPv4 space with Heatmaps
data from 1hour two tier1 ISP backbone links:
-Chicago->Seattle
-Los Angeles->San jose
observation:
-large scanning/DOS/spoofing traffic
-legacy address space is not that well utilized (similar to our measurement!).
5. The "robust yet fragile" nature of the Internet@PNAS
SF model VS HOT model of Internet topology.
-SF (scale-free): power-law: k * d_k^a = c, a and c are constant
highly connected vertices are crucial to the global connectivity and they are where most traffic pass through.
-HOT (highly optimized/organized tolerance/tradeoffs)
maximize utility with limited resources
backbone cost is primarily dominated by installation of links
result is highly variable bandwidth and router degrees at network's periphery, but a much greater uniformity of high-bandwidth and low-degree routers in the core.
They claim that the real network is more like HOT but not SF.
DIMES
Chris Harrison's Internet Map
IPv4 Address Report
BGP Report
iPlane: An Information Plane for Distributed Services
Rocketfuel: An ISP Topology Mapping Engine
INTEL/DANTE (Delivery of Advanced Network Technology to Europe)
Sarangworld Traceroute Project Pattern Matching
Route Views
Some method to measure:
latency: RTT
pkt loss: active probing
IP geo-location: whois, coutry, city, and ZIP code(CAIDA NetGeo)..
link bandwidth: pkt dispersion (equal size pkt pair/train), P2P peers' uploading rate to me(iPlane)..
link capacity: varying the size of pkt pair (pathchar).
active probing pkt: ICMP-more dests, UDP-more links, least dests(CAIDA's Ark@CATCH).
Some paper notes:
1. CAIDA's Ark@CATCH, Internet Mapping: from Art to Science
-31 monitors, LINDA-like coordination structure
-mainly traceroute to every /24 to get router-level topology
-UDP probing for router alias resolution
-then map to AS-level using BGP info from Routeview
-rDNS to get geo-info and etc.
2. CAIDA@SIGCOMM'05 workshop: Classifying the Types of Autonomous Systems in the Internet
Companies: 41.6%
ISP: 34.33%
Univ.: 10.49%
NIC(Network Information Center): 6.86%
3. CAIDA@SIGCOMM'07 CCR: AS Relationships: Inference and Validation
c2p(customer to provider): 3070
p2p(peer to peer): 623
s2s(sibling to sibling): 31
4. CAIDA: Measuring the use of IPv4 space with Heatmaps
data from 1hour two tier1 ISP backbone links:
-Chicago->Seattle
-Los Angeles->San jose
observation:
-large scanning/DOS/spoofing traffic
-legacy address space is not that well utilized (similar to our measurement!).
5. The "robust yet fragile" nature of the Internet@PNAS
SF model VS HOT model of Internet topology.
-SF (scale-free): power-law: k * d_k^a = c, a and c are constant
highly connected vertices are crucial to the global connectivity and they are where most traffic pass through.
-HOT (highly optimized/organized tolerance/tradeoffs)
maximize utility with limited resources
backbone cost is primarily dominated by installation of links
result is highly variable bandwidth and router degrees at network's periphery, but a much greater uniformity of high-bandwidth and low-degree routers in the core.
They claim that the real network is more like HOT but not SF.
Thursday, February 12, 2009
韩寒被和谐掉的博文
很欣慰，北京的公安机关经过调查，央视大楼着火原因并不是神秘自燃，也不是附近居民烟花误伤或者临时工在楼里吸烟，是中央电视台自己礼花玩，把自己给点了。令人难过的是，消防员张建勇为此付出了年轻的生命，要不然这事就成了喜剧了。
后来央视出面道歉，说是因为某办公室的主任未经上级批准，违规燃放烟花所致。
于是，历史上最爱放烟花的办公室主任出现了。这将近百万元的由电脑控制的礼花，同时有数台摄像机在拍摄的一个行为，居然是一个办公室主任自己干的。未经上级批准那肯定就是他自费放的了，或者说，在央视，某办公室燃放百万元的烟花是不需要经过批准的，这CASE太小了。
很明显不是这样的，当然是更大的领导希望，责任到这个办公室主任就打住了，你就安心的坐牢去吧，兄弟，放心，你的父母我们会赡养的，你的儿女我们会抚养的，你的老婆我们会包养的。
这个礼花的燃放，很显然是央视准备用在以后的电视节目里的，作为央视新大楼形象片的片花播出，当然，也有可能是当天录播的元宵晚会之后直接就可以插入刚才的礼花映裤衩的壮观景象。但是，很不幸这些画面只能成内参了。我都能想象当时的几个拍摄烟花的外景摄影师看见大楼着了以后的情形，他们拿着对讲机问，导演导演，这是安排的麽？
此番央视□□□□，我惊奇的发现，除了对消防烈士表示惋惜意外，我身边的人都是喜闻乐见的，我强压自己阴暗的心理，企图以人文关怀面对这个灾难，但我不得不承认，我是幸灾乐祸的。当然，可能别人都是沉痛悲哀的，那就当我身边的是一个阴暗小团体吧。我就向大家暴露我的低级阴暗。
首先，多行不义必□□□□。玩火□□□□是一个历史定律，当然，人家说的是一个漫长的过程，没见过央视那么立竿见影的玩火 □□□□。央视作为一个新闻媒体，基本没有新闻道德。可以说，除了中国，中国中央电视台这样做事的电视台在其他大部分国家，都是一个违法的存在。在我们这里，它不但合法，而且甚至象征着法。多少年来，央视做过多少颠倒黑白，混淆视听，迫害文化，篡改事实，瞒天过海，助纣为虐，粉饰太平的事情？当然，这是一个疑问句，没别的意思，你说没有就是没有咯，反正你掌握了媒体资源嘛。
按理来说，国家财产有这么大的损失，老百姓应该很难过才是，因为这些都是用纳税人的钱造的。但现在大家都是开明的，反正吃喝玩乐都是浪费，一个楼造两遍算什么。央视给大家的感觉就是牛逼，而且央视自己也很满意于这种牛逼，直到火烧牛的逼，才牛逼不起来。央视是一个半垄断的机构，一个半垄断机构都能这样牛逼，所以可以见得，如果一个垄断机构要牛逼起来，那是什么样，反正他们就是牛，屁民们都是牛虱，在来烦我，那一小撮牛屎就是你们的下场。
所以，央视自己要反思，当然，央视是永远不需要反思的。随着舆论的发达，社会的发展，央视的公信力现在已经不能用没有来形容了，而是一个负数。也就是说，央视的新闻我们可以反过来看。我们当然理解央视作为一个国家电视台，党的喉舌，自然不能那么随心所欲，但是，事情永远是可以做好的，命题作文也是可以不至于差成这样的。这是事情最坏的结果。一个媒体，完全没有公信力可言，非但没有倒闭，还是一个国家的第一号，那只能说明连同这个国家都失去了公信力。
不幸的是，在这次火灾倳件中，央视又一次重演了一遍。这应该是建国以来除去森林大火以外，造成经济损失最大的一场火灾了，这无论如何都是一个特大新闻，但在央视的轻描淡写下，这场火灾就像烧了你我家的房子一样平常。假设是BBC的大楼放烟花烧了，甚至是湖南卫视的楼烧了，央视一定是报道的最积极的，不仅要滚动播出，而且估计导播都得乐得在地上打滚，做到真正的滚动播出。但这么大的一件事情，曾经一度是全世界的头条以及直播的新闻，在一个国家电视台里并无体现，达到了完美的和谐。这也是我们中国的新闻现状，我们看到的所有新闻都是经过了别有用心的删选和选择的，一切都看剧本需要和导演要求。
这把大火需要反思的不是烟花需要不需要禁放，这是一个小问题，这只是央视在漫漫□□□□路上的一个小高潮而已，我们需要反思的是，央视需要不需要禁放。而炡椨也需要反思一个问题，那就是央视，人民日报，光明日报，新华社等喉舌，在现在的操作模式下，其实还拖累了主子的形象，本来是真事，被这些媒体一说，新华社通稿一发，反而像个假事了，本来是个加分的事，被他们一宣扬，居然正正得副变成了一个减分的事情。而且随着年轻人的成长，这些媒体上报道的内容正逐渐的成为笑柄。虽然他们都是由宣传部门直接管理，但是，在这五十年中，社会和炡椨都发生了诸多的变化，不过对于这些宣传机构的控制管理以及他们的宣传方式都和五十年前几乎一模一样，只是增添了五毛党等一些颇为不得力的辅助，自然会被时代淘汰。
五十年前人好骗，你今天人民日报说毛主席语录发行到美国导致了美国的灭亡，晚上九成八的群众都会像央视那样放烟花庆祝.但现在是一个讲究以德服人和以德蒙人的年代，所以，希望这场大火能让相关部门考虑考虑，新闻到底需要不需要联播。
后来央视出面道歉，说是因为某办公室的主任未经上级批准，违规燃放烟花所致。
于是，历史上最爱放烟花的办公室主任出现了。这将近百万元的由电脑控制的礼花，同时有数台摄像机在拍摄的一个行为，居然是一个办公室主任自己干的。未经上级批准那肯定就是他自费放的了，或者说，在央视，某办公室燃放百万元的烟花是不需要经过批准的，这CASE太小了。
很明显不是这样的，当然是更大的领导希望，责任到这个办公室主任就打住了，你就安心的坐牢去吧，兄弟，放心，你的父母我们会赡养的，你的儿女我们会抚养的，你的老婆我们会包养的。
这个礼花的燃放，很显然是央视准备用在以后的电视节目里的，作为央视新大楼形象片的片花播出，当然，也有可能是当天录播的元宵晚会之后直接就可以插入刚才的礼花映裤衩的壮观景象。但是，很不幸这些画面只能成内参了。我都能想象当时的几个拍摄烟花的外景摄影师看见大楼着了以后的情形，他们拿着对讲机问，导演导演，这是安排的麽？
此番央视□□□□，我惊奇的发现，除了对消防烈士表示惋惜意外，我身边的人都是喜闻乐见的，我强压自己阴暗的心理，企图以人文关怀面对这个灾难，但我不得不承认，我是幸灾乐祸的。当然，可能别人都是沉痛悲哀的，那就当我身边的是一个阴暗小团体吧。我就向大家暴露我的低级阴暗。
首先，多行不义必□□□□。玩火□□□□是一个历史定律，当然，人家说的是一个漫长的过程，没见过央视那么立竿见影的玩火 □□□□。央视作为一个新闻媒体，基本没有新闻道德。可以说，除了中国，中国中央电视台这样做事的电视台在其他大部分国家，都是一个违法的存在。在我们这里，它不但合法，而且甚至象征着法。多少年来，央视做过多少颠倒黑白，混淆视听，迫害文化，篡改事实，瞒天过海，助纣为虐，粉饰太平的事情？当然，这是一个疑问句，没别的意思，你说没有就是没有咯，反正你掌握了媒体资源嘛。
按理来说，国家财产有这么大的损失，老百姓应该很难过才是，因为这些都是用纳税人的钱造的。但现在大家都是开明的，反正吃喝玩乐都是浪费，一个楼造两遍算什么。央视给大家的感觉就是牛逼，而且央视自己也很满意于这种牛逼，直到火烧牛的逼，才牛逼不起来。央视是一个半垄断的机构，一个半垄断机构都能这样牛逼，所以可以见得，如果一个垄断机构要牛逼起来，那是什么样，反正他们就是牛，屁民们都是牛虱，在来烦我，那一小撮牛屎就是你们的下场。
所以，央视自己要反思，当然，央视是永远不需要反思的。随着舆论的发达，社会的发展，央视的公信力现在已经不能用没有来形容了，而是一个负数。也就是说，央视的新闻我们可以反过来看。我们当然理解央视作为一个国家电视台，党的喉舌，自然不能那么随心所欲，但是，事情永远是可以做好的，命题作文也是可以不至于差成这样的。这是事情最坏的结果。一个媒体，完全没有公信力可言，非但没有倒闭，还是一个国家的第一号，那只能说明连同这个国家都失去了公信力。
不幸的是，在这次火灾倳件中，央视又一次重演了一遍。这应该是建国以来除去森林大火以外，造成经济损失最大的一场火灾了，这无论如何都是一个特大新闻，但在央视的轻描淡写下，这场火灾就像烧了你我家的房子一样平常。假设是BBC的大楼放烟花烧了，甚至是湖南卫视的楼烧了，央视一定是报道的最积极的，不仅要滚动播出，而且估计导播都得乐得在地上打滚，做到真正的滚动播出。但这么大的一件事情，曾经一度是全世界的头条以及直播的新闻，在一个国家电视台里并无体现，达到了完美的和谐。这也是我们中国的新闻现状，我们看到的所有新闻都是经过了别有用心的删选和选择的，一切都看剧本需要和导演要求。
这把大火需要反思的不是烟花需要不需要禁放，这是一个小问题，这只是央视在漫漫□□□□路上的一个小高潮而已，我们需要反思的是，央视需要不需要禁放。而炡椨也需要反思一个问题，那就是央视，人民日报，光明日报，新华社等喉舌，在现在的操作模式下，其实还拖累了主子的形象，本来是真事，被这些媒体一说，新华社通稿一发，反而像个假事了，本来是个加分的事，被他们一宣扬，居然正正得副变成了一个减分的事情。而且随着年轻人的成长，这些媒体上报道的内容正逐渐的成为笑柄。虽然他们都是由宣传部门直接管理，但是，在这五十年中，社会和炡椨都发生了诸多的变化，不过对于这些宣传机构的控制管理以及他们的宣传方式都和五十年前几乎一模一样，只是增添了五毛党等一些颇为不得力的辅助，自然会被时代淘汰。
五十年前人好骗，你今天人民日报说毛主席语录发行到美国导致了美国的灭亡，晚上九成八的群众都会像央视那样放烟花庆祝.但现在是一个讲究以德服人和以德蒙人的年代，所以，希望这场大火能让相关部门考虑考虑，新闻到底需要不需要联播。
Wednesday, February 11, 2009
AI Project1, A*-Starcraft?
Whoever(Svan?) designed this project, I have to say, it's a funny project. Although I spent sometime coding, it's worth it.
This project relates A* algorithm to the famous game, Starcraft. see project description here.
Starcraft.. now I know better how Zerg and Terran plan their paths..
I used to play Starcraft a lot when I was in high school. I remembered we 8 ppl playing 4vs4 using the "hunter" map in computer lab-_-. But later we found that 4vs4 hurts our friendship because of the competition, so we began to play 7vs1 where the 1 is the computer^____^.
This project relates A* algorithm to the famous game, Starcraft. see project description here.
Starcraft.. now I know better how Zerg and Terran plan their paths..
I used to play Starcraft a lot when I was in high school. I remembered we 8 ppl playing 4vs4 using the "hunter" map in computer lab-_-. But later we found that 4vs4 hurts our friendship because of the competition, so we began to play 7vs1 where the 1 is the computer^____^.
Friday, February 6, 2009
Monday, February 2, 2009
After the crazy week
Lots of things happened during last week. It was kind of crazy, but I didn't feel bad or too exhausted, since I like being occupied. -____________-
I like to call myself energetic, not normally energetic, but super energetic. Someone call me restless, I think that's probably the right word, since my English still sucks.. XD
If you ask me what I'm afraid of, I think the answer is probably if some day I totally understand the whole world. Then I will feel soooo bored and probably I will kill myself. But luckily, I'm not immortal, so this could not happen.
Sometimes I cannot understand myself. I used to be lazy as well, lazy to go out, lazy to study, lazy to try new things. Or, probably it's not just because of laziness, but also being afraid of things unknown and not confident enough. My dad used to push me to get a minor when I was in college, but I refused, and the reason is because I thought I could not handle two subjects in Tsinghua. But now when I think of my college life, I find myself do have extra time to do other things. I wasted them by killing them with games and movies (relaxing with games and movies is good, but if you are doing them just because you have nothing else to do, then that's wasting of time).
Then I went abroad, and I became more and more eager to search for new things. I don't know what exatcly caused this. Probably one of the reasons is that I finished the 6000-lines project which I never thought I could make it during the first crazy semester in USC. After that, I felt more and more confident and found myself more and more extra time. At that time, my restless spirit began to rise, I need new&meaningful things to occupy my extra time, not just games and movies, and not sleeping. Then I took an economics course and I planned myself an east coast trip. My dad was surprised when he heard me that I was going to east coast by myself. I admit I was kind of nervous as well since I've never done these kind of things before. I was always afraid that I could get lost if traveling alone in an unfamiliar city.
But now I understand something important, even if you may get lost, you may fail, the most important thing is not you succeed, but you tried, and tried with all your effort&energy.
I told one of my friends what my life should be like: I should be always climbing, there can be both upward way and downward way in my way, and I'm not afraid to try them both. I should never stop at one point just because it's comfortable&safe enough for me or it's risky to go onto the other way unknown.
I like to call myself energetic, not normally energetic, but super energetic. Someone call me restless, I think that's probably the right word, since my English still sucks.. XD
If you ask me what I'm afraid of, I think the answer is probably if some day I totally understand the whole world. Then I will feel soooo bored and probably I will kill myself. But luckily, I'm not immortal, so this could not happen.
Sometimes I cannot understand myself. I used to be lazy as well, lazy to go out, lazy to study, lazy to try new things. Or, probably it's not just because of laziness, but also being afraid of things unknown and not confident enough. My dad used to push me to get a minor when I was in college, but I refused, and the reason is because I thought I could not handle two subjects in Tsinghua. But now when I think of my college life, I find myself do have extra time to do other things. I wasted them by killing them with games and movies (relaxing with games and movies is good, but if you are doing them just because you have nothing else to do, then that's wasting of time).
Then I went abroad, and I became more and more eager to search for new things. I don't know what exatcly caused this. Probably one of the reasons is that I finished the 6000-lines project which I never thought I could make it during the first crazy semester in USC. After that, I felt more and more confident and found myself more and more extra time. At that time, my restless spirit began to rise, I need new&meaningful things to occupy my extra time, not just games and movies, and not sleeping. Then I took an economics course and I planned myself an east coast trip. My dad was surprised when he heard me that I was going to east coast by myself. I admit I was kind of nervous as well since I've never done these kind of things before. I was always afraid that I could get lost if traveling alone in an unfamiliar city.
But now I understand something important, even if you may get lost, you may fail, the most important thing is not you succeed, but you tried, and tried with all your effort&energy.
I told one of my friends what my life should be like: I should be always climbing, there can be both upward way and downward way in my way, and I'm not afraid to try them both. I should never stop at one point just because it's comfortable&safe enough for me or it's risky to go onto the other way unknown.
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