世界主要国家人口与谷物数量统计

1985年1986年1987年国家或地区~.~一.一-目叫-~.一.一~一一甲~~~~~~~~,叼,~}人口‘万人,]”,‘万,,世界483725。418任334。5491641。9le6631。7.}‘””‘,“·’{‘7“““·7非洲55493。08166。357189。58695。8}58939一’}”52‘。阿尔及利亚875。4291。9899。0263。3923。3305.3 布基纳法索6白4。2158。37 12.8189。4731。91右3。7埃及石690。9858一74798。4886。34908。4 99右一3埃塞俄比亚4355。7482。04479。1608。34606。0535,0肯尼亚2060。0327。82148。3335。52240。5牙33。2摩洛哥2194。1502。12245。2783。32297。4432。5尼日尔…     

未来学书库

预测学。李业编。广州:华南工学院出版社。 1986年。275页。 87/G303/111预测计算方法。王勇领编著。北京:科学出版社。 1986年。201页。 87/G303/112预测学及其应用。王永初编著。重庆:科学技术文献出版社重庆分社。 1986年。561页。 87/C303/113新技术革命100题。卢士亚主编,梅林等编写。天津:南开大学出版社。1986年。206页。87/C303/115怎样提高预见能力。高桥宫行著;王瑞林、冯士琴译。北京:科学普及出版社。1986年。218页。     

2010上海世博会——看点、赢点与节点

5月31日,世博满月了。 高朋满座。美景满园。横跨浦江。面朝大海。春暖花开。草长莺飞。江南春色。美不胜收。     

我国主要国民经济季度调整环比指数(%)

指标名称2 15 32 9565肠23 37 8470 OUO八︸八O八0八01连产0 od臼d12 34 09 89 60 05 20 1909--2-l--3-2--0 1 8 591 98834工业,悠产值轻工业,慈产值重工业总产值全民工业,慈产值集体工业总产值货币流通量银行各项存款银行各项货款工资和对个人其它现金支出社会商品零售总额进口总额(海关)出口总额(海关)4。15313。4512一0。85。69一1 1989 1 2 34一1。724。55一1。20一O。99一1。585。52一3。08一1。16一1。983。490。65一0。48一2。603。88一0。58一1。290。943。01一2。33一1。368。214。14一4。251。612。5 14。235。916。283。963。4…     

小璐填字

游戏规则:根据横向、纵向提示说明,把相应的文字填入答题纸的空格处。纵行一、中国军队的全称。二、成语。传说秦始皇有一面镜子,能照人心胆。比喻官员判案公正廉明。。三、“贪生怕死”的反义词。四、支撑人和脊椎动物背部的脊柱。五、指对母亲的父亲的称谓。六、成语。形容因激动或羞愧而脸色发红。七、动画片中的一个卡通形象。     

闲人

在机关，我是一个闲人。虽然无所事事。整天优哉游哉。但我是一个副科级干部。别人不能小看我。论资格。我是老机关了；论待遇。我一点也不少：论人缘。我还真有一群铁哥们。所以。在机关我吃得开。日子过得很不错。     

风雨世纪情

唯有同学,谊深纯情。梁祝之情,千古留名。怀揣梦想,志远年轻。同堂受教,同室而歌。同桌就餐,笑语良多。共学互勉,切磋琢磨。极左年代,高考招生,只论成份,成绩不问。遗珠之叹,常有耳闻。     

“空巢”中的期待——爸妈的“空巢”心理危机

梁上有双燕,翩翩雄与雌。衔泥两椽间,一巢生四儿。四儿日夜长,索食声孜孜。青虫不易捕,黄口无饱期。嘴爪虽欲敝,心力不知疲。须臾十来往,犹恐巢中饥。辛勤三十日,母瘦雏渐肥。喃喃教言语,一一刷毛衣。一旦羽翼成,引上庭树枝。举翅不回顾,随风四散飞。雌雄空中鸣,声尽呼不归。却入空巢里,啁啾终夜悲。燕燕尔勿悲,尔当返自思。思尔为雏日,高飞背母时。当时父母念,今日尔应知。——白居易《燕诗》     

高科技“高”在哪里?

高智力。科技研究开发人员层次高,在国外高技术企业的研究人员比普通企业的高2倍,约占本企业总人数的1/3。高综合性。它包含多种尖端技术,运用综合方法。高渗透性。它渗透到社会的各个领域(包括家庭),国与国之间的生产经营也相互渗透。高起点。高技术企业,要求起点高。尤其不能污染环境,影响生态平衡。高竞争性。它具有     

谈全面提高电缆运行管理水平

一、南京供电局电缆管理现状 南京供电局现有220千伏电缆2条。45千米(在建)。110千伏电缆132条。161千米。35千伏电缆128条。32千米。10千伏电缆1475条。470，332千米。占10千伏线路长度的15，16％。其中交联电缆占70．2％。其他占29，8％；城区分局10千伏电缆长度309．225千米。占10千伏线路长度的36．76％。郊区分局电缆长度161．107千米。占10千伏线路长度的7，13％。南京供电局现有临街变180座。箱变389台。开闭所115座。环网柜86台。电缆分支箱120台。     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

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.     

Cooler temperatures inductive to locust outbreaks

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.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

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.     

Low doses of a red wine ingredient figh diabetes in mice

Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

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.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

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.     

Rough Justice: A Statistical Assessment of ICANN's Uniform Dispute Resolution Policy

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.     

Prevalence of soft neurological signs in Chinese people

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.     

Molecular motor assembly of a biomimetic system

Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction.     

Monoculture Rubber Plantations Have Negative Ef ects on Controlling Splash Erosion

<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence