2009年01月31日 15:29 中国新闻网
据加拿大《明报》报道，加拿大亚太基金会(Asia Pacific Foundation of Canada)最新发表，由香港理工大学社会科学教授David Zweig完成，自加拿大返回中国的留学生(加拿大海归派)研究指出，2006年当年加拿大海归人数达到2996人，为3年前的1倍多，72%的人在回到中国3个月内找到工作，31.6%的人表示在加拿大留学经验对他们回到中国找工帮助很大。
研究亦说，加拿大海归人士有26%在与加拿大有经贸往来的公司工作，海归人士对促进加中经贸发展有极正面的作用。
加国留学市场处于劣势
不过，研究亦发现，加拿大欠缺一个国家层级的教育部来规划对外招收留学生，而是由每个省份的教育厅及各个大学各自进行，这令加拿大在全球留学市场竞争中，处于劣势。加拿大本来为中国留学生前往国家排名第5，但现在排名已落后至第7。
这项研究是透过在中国留学服务中心，取得该中心登记，自加拿大返回中国的留学生资料，对他们发出调查问卷，总共有529名留学生将问卷寄回。
根据统计，2003年自加拿大返回中国的留学生为1344人，但到了2006年即增至2996人，等于在3年内海归人数呈倍数增长。
商科学生回国最多
研究发现，加拿大中国留学生选择返回中国的最重要原因是可就近照顾父母(21.4%)、其次才是回中国发展机会更好(15.7%)及很难融入加拿大主流社会(14%)，在中国可晋身上流社会(9.3%)。至于返回中国留学生以商科学生最多，占受访的50.5%，19.9%学工业及应用科学，8.3%则是学社会学科。
在留学生返回中国前的收入统计，有45%的人收入低于1年1万加币，低过2万加币的人占所有受访者的70%。
在问到对加拿大留学经验的评价时，31.6%的人说对他们回到中国找到工作帮助很大，45%的人答说留学经验非常重要，只有22%的人说，留学经验似乎并不太重要，3.8%的人说完全不重要。
65.6%的人建议中国学生到加拿大留学，23%的人表示不会建议到加拿大留学，9.5%强烈建议去加拿大留学。
研究说，尽管加拿大大学在中国有良好声誉，且加拿大海归人士回到中国后即很快找到工作，但在吸引中国留学生前往的工作上，加拿大明显不如澳洲及英国。
Saturday, January 31, 2009
Wireless Networks Are Soft Virus Targets
We have all gotten emails warning us about nasty computer viruses. Maybe you even have antivirus software installed on your machine. Well, now scientsts say that our wireless networks are particular vulnerable to infection, especially in densely populated urban areas.
The use of wi-fi routers has become increasingly commonplace as more people get online at home, at school, at the coffee shop. And these wireless networks are an an excellent target for computer viruses. Because they are always on, always connected to the Internet, and do not have specific software to protect them.
The scientists simulated the real infection of wireless networks in a handful of US cities, including San Fransico, Chicago, New York and Boston. They found that the infection of just a small number of routers triggered an outbreak, with the virus spreading to tens of thousands of routers within a week, most within the first 24 hours.The results are published in the Procceedings of the National Academy of Sciences.
Wireless networks are weakened by a general lack of security, including a failure to change the default password. So if you want your networks virus-free, at the very least choose a password that's hard to guess, like basco.
SOURCE:http://www.sciam.com/podcast/episode.cfm?id=wireless-networks-are-soft-virus-ta-09-01-29
The use of wi-fi routers has become increasingly commonplace as more people get online at home, at school, at the coffee shop. And these wireless networks are an an excellent target for computer viruses. Because they are always on, always connected to the Internet, and do not have specific software to protect them.
The scientists simulated the real infection of wireless networks in a handful of US cities, including San Fransico, Chicago, New York and Boston. They found that the infection of just a small number of routers triggered an outbreak, with the virus spreading to tens of thousands of routers within a week, most within the first 24 hours.The results are published in the Procceedings of the National Academy of Sciences.
Wireless networks are weakened by a general lack of security, including a failure to change the default password. So if you want your networks virus-free, at the very least choose a password that's hard to guess, like basco.
SOURCE:http://www.sciam.com/podcast/episode.cfm?id=wireless-networks-are-soft-virus-ta-09-01-29
Tuesday, January 27, 2009
EAT LESS REMEMBER MORE
You may have noticed that as you get older you start forgetting more stuff, like where you left your glasses or the names of your children. Well, if you are ged up with these senior moments, put down that pastrami sandwich. Because a new study, published in the Jan 27th issue of the procceedings of the National Academy of Sciences shows cutting calories actually improves memories in older folks.
Calorie restriction lets lab animals live longer. And these hungry critters tend to be healthier too; with lower cholesterol better insulin sensitivity and even slower cognitive decline. But these diets can be draconian. And it has not been clear whether they would offer the same benefits to people.
In this study, scientists asked 50 elderly women to cut the number of calories they can comsume by a third. After 3 months the researchers found that the dieters were not only slimmer but they were better than they had been at memorizing lists of words. They also had better insulin levels and fewer markets of inflammation, which suggersts that keeping these things under control may help keep the brain fit. It is one of the cuel ironies of aging: if you want to remember your favourite restaurants, the less you shold eat at them.
SOURCE: http://www.sciam.com/podcast/podcast.mp3?e_id=16A4E391-C9D2-052A-CD169D72088C5807
Calorie restriction lets lab animals live longer. And these hungry critters tend to be healthier too; with lower cholesterol better insulin sensitivity and even slower cognitive decline. But these diets can be draconian. And it has not been clear whether they would offer the same benefits to people.
In this study, scientists asked 50 elderly women to cut the number of calories they can comsume by a third. After 3 months the researchers found that the dieters were not only slimmer but they were better than they had been at memorizing lists of words. They also had better insulin levels and fewer markets of inflammation, which suggersts that keeping these things under control may help keep the brain fit. It is one of the cuel ironies of aging: if you want to remember your favourite restaurants, the less you shold eat at them.
SOURCE: http://www.sciam.com/podcast/podcast.mp3?e_id=16A4E391-C9D2-052A-CD169D72088C5807
Thursday, January 22, 2009
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