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《大科技．科学之谜》2009,(7)
有一丝思念,叫乡愁,有一种情结,叫乡音,有一个地方,叫乡土,有一缕长线,叫剪不断的风筝线……《水乡》是很多关于江南的画作中的一幅,是吴冠中在90年代创作的作品,也是一幅极具他个人特色的墨彩画。乡村的题材,景物的轻描,和谐的氛围,具体的影象已经从中剥离,厚重的墨汁点化出层层的落户,平静的小河把两 相似文献
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获奖感言“阿拉神灯杯”软件设计大赛,是国内级别最高且是第一次这样的比赛,我们能够参赛这次比赛也是比较幸运的,特别是当我们从上千人的选拔后脱颖而出时,从初赛到复赛,再到后来的决赛,每一次都让人心跳,我们始终坚信一个原则,付出总是会有收获的,我们熬过多少日日夜夜,牺牲了多少个假日,特别是春节,人们都在欢欢喜喜的走亲访友,我们却整天藏在家里埋头钻研软件的开发,我们因为劳累过度而住过院,进入决赛了,所有的付出都是值得的。再苦再累也无所谓了,虽然我们进入决赛了,但是我们开发软件的进程一刻没有停止过,因为如果我们停止了,就意味着已经落后,我们要不断地完善和调试程序,发现问题我们会即时进行调整。我们希望我们能够在决赛中取得更好的成绩,感谢阿拉神灯杯组委会给予我们这样一次千载难逢的机会,也感谢在幕后支持这次软件大赛的所有工作人员,你们辛苦了,其实,我们不是为自己而战,我们是为祖国的软件产业而战,中国的软件要腾飞,就必须具有千千万万的软件开发者的坚韧不拔的创新精神,只有这样,祖国的软件才能振兴,这就是我们的感言。 相似文献
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跨组织合作技术创新界面稳定性分析 总被引：1，自引：0，他引：1
快速变化的外部环境给企业技术的发展与更新提出了新的要求,靠单一企业的力量已经很难适应,合作技术创新是新态势下一种新型的组织安排,但合作的效果经常不是十分令人满意,其中,企业间的界面管理是影响合作绩效的一个重要因素,界面是否稳定在很大程度上决定着合作的成败.合作技术创新界面的稳定性与合约安排,技术及知识的溢出性以及项目的收益稳定性有关.本文在相关文献分析的基础上,利用微分方程建模的方法,对两合作者在地位平等,资源互补的情况下,其各自的期望收益、可能出现的投机行为,合作中的利益分配等等合作中的重要问题进行模拟,结果表明,选择合适的激励参数,采用产权保护机制,预期收益比较稳定的情况下,合作界面也是比较稳定的. 相似文献
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一个女孩
听啊,听啊,在废墟中,在瓦砾下,传来阵阵清脆读书声。一个压在废墟下的女孩,打着手电筒在忘情读书。她忘记了危险,忘记了伤痛,忘记了饥饿,用读书声驱赶着恐惧,与死神抗争,同时也召唤着生的希望。废墟下是黑暗的,但你心中有阳光,因为知识会带来勇气,文化会带来光明。临危不惧,从容镇静,在你身上,显示了广大灾民的不屈精神,体现着我们民族的光辉未来。你是最优秀的“读书种子”,你也是最出色的抗震勇士,向你致敬,为你祝福! 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
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Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
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Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
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Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献
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Milton Mueller 《The Information Society》2001,17(3):151-163
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP. 相似文献
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Prof. Raymond C.K. Chen a neuropsychologist with the CAS Institute of Psychology has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology. 相似文献
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Prof. SUN Changpu from the CAS Institute of Theoretical Physics coworkers from University of Basel in Switzerland have worked out a way - at least in theory - to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams is similar to the famous Stern-Gerlach effect whereby a beam of atoms passing through a magnetic field is split in two according to the atoms' spin states 《中国科学院院刊(英文版)》2008,22(1):23-23
Prof. SUN Changpu from the CAS Institute of Theoretical Physics and coworkers from University of Basel in Switzerland have worked out a way --at least in theory --to split a beam of molecules according to their chirality. The technique involves passing the molecules through three different laser beams and is similar to the famous Stern-Gerlach effect, whereby a beam of atoms passing through a magnetic field is split in two according to the atoms＇ spin states （Phys. Rev. Lett. 99 130403）. 相似文献