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| 1 | “三极对垒”还是“四分天下”——中国在全球科技中的新角色显示文摘美国与欧盟争夺世界科技领先者的竞赛是当前研究的热点。欧洲委员会最近的研究表明,欧洲在世界科技产出中所占的比重日益增加,并宣布欧洲上世纪末处于科学产出的领先地位。为了对全球发展态势进行监测,该研究对1991-2005年共15年的数据进行了分析。对科技产出活动和影响模式的分析采用的是一套文献计量指标和技术计量指标,这套指标包括:(1)出版物产出指标,如占世界总量的份额和基于主题的出版物分布概况;(2)引文指标,如基于期刊和基于主题的归一化平均引用率;(3)国际合作论文及其影响;(4)专利指标以及专利与论文之间的相互引用关系。同时文章还讨论了国家层面的文献计量学特征的演变、'科学权重'以及科学技术关联的模式。研究结果表明,采用科学技术指标这面镜子所反映的'三极对垒'模式在21世纪将不会长久,中国正在挑战一流科学经济强国的地位,并且其成为世界第二大科技强国的时代正在到来。 | Wolfgang Gl nzel Koenraad Debackere Martin Meyer 刘俊婉 | 2007 | 科学观察2007,2,1: | 3 |
| 2 | Mapping mountain areas: learning from Global, European and Norwegian perspectives显示文摘Defining the spatial extent of mountain areas has long been a challenge. In the present century, the availability of digital elevation models(DEMs) incorporated into geographic information systems(GIS) has allowed the definition of mountain areas based on topographic and other criteria. This paper presents the various delineations of mountains that have been prepared at three scales – global, regional(Europe), and national – and explores the reasons and processes leading to these delineations, and how they have been used. A detailed case study is then presented for Norway. Overall, two types of approaches to mapping mountains have been taken: first, considering mountains per se, based on elevation and/or topography; second, considering them among other categories, e.g., landforms or biogeographical, environmental or landscape zones. All attempts to map mountain areas derive essentially from the objectives of those commissioning and/or undertaking the work; a unitary definition remains unlikely. | Martin F.PRICE Tor ARNESEN Erik GL?ERSEN Marc J.METZGER | 2019 | Journal of Mountain Science2019,16,1: | 3 |
| 3 | 采用UV光诱导微孔发泡产生3D结构的胶印新方法显示文摘0引言近年来,科研人员研发出多种新型印刷技术和印刷油墨,以实现不同基底上制备凸起三维(3D)结构。本研究开发出一种基于光化学反应的新型发泡油墨,无须其他辅助工艺。 | Sandra Schlgl Martin Reischl Volker Ribitsch Wolfgang Kern 何文 | 2012 | 中国印刷与包装研究2012,4,2: | 2 |
| 4 | Midface reconstruction : surgical reconstruction: surgical reconstruction versus prosthesis 显示文摘 | Robb GL Martmick MT Martin JW | 2001 | Head Neck2001,23,1: | 1 |
| 5 | Increased platelet aggregability associated with platelet GP Ⅲ a PIA2 polymorphism:the Framingham Offspring Study显示文摘 | Feng DL Klaus L Martin GL | 1999 | Arterioscler Thromb Vase Bio11999,19,4: | 1 |
| 6 | Impaired heart rate response to graded exercise CRI 显示文摘 | Michale SL Peter MO Martin GL | 1996 | Culation1996,93,3: | 1 |
| 7 | Personality correlates of depression and health symptoms : a test of a self - regulation mod- el显示文摘 | Martin TR Flett GL Hewitt PL | 1996 | Journal of Research in Personality1996,3,: | 1 |
| 8 | Outcomes of laparoscopic radical nephrectomy in the setting of vena caval and renal vein thrombus: seven-year experience 显示文摘 | Martin GL Castle EP Martin AD | 2008 | J Endourol2008,22,8: | 1 |
| 9 | Molecular investigation of the RhC/c polymorphism 显示文摘 | Avent ND Daniels Gl Martin PG | 1997 | Transfusion1997,,: | 1 |
| 10 | Outcomes of laparoseopic radical nephrectomy in the setting of vena caval and renal vein thmmbus : seven-year experience 显示文摘 | Martin GL Castle EP Martin AD et ai | 2008 | J Endourol2008,22,: | 1 |
| 11 | Inter- val from prostate biopsy to robot - assisted radical prostatecto- my:effects on perioperative outcomes显示文摘 | MARTIN GL NUNEZ RN HUMPHREYS MD | 2009 | BJU Int2009,104,11: | 1 |
| 12 | Pseudoankylosis of the temporomandibular joint caused by zygomatic malformation 显示文摘 | Baraldi CE Martins GL Puricelli E | 2010 | Int J Oral Maxillofac Surg2010,39,7: | 1 |
| 13 | West Nile virus 显示文摘 | Campbell GL Martin AA Laneiotti RS | 2002 | Lancet Infect Dis2002,2,: | 1 |
| 14 | Impaired heart rate response to graded exercise 显示文摘 | Michael SL Peter MO Martin GL | 1996 | Circulation1996,93,: | 1 |
| 15 | Bone healingafter bur and Er:YAG laser ostectomies显示文摘 | Martins GL Puricelli E Baraldi CE | 2011 | J Oral Maxil- lofac Surg2011,69,: | 1 |
| 16 | Common intestinal parasite显示文摘 | Kucik cj Martin GL Sortor BV | 2004 | Am Family Physician2004,69,: | 1 |
| 17 | Effects of dietary zinc deficiency on the reproductive system of young male sheep:testicular growth and the secretion of inhibin and test osterone显示文摘 | Martin GB White GL Markey CM | 1994 | Reprod Fertil1994,101,1: | 1 |
| 18 | Collagen gene expression and the altered accumulation of scleral collagen during the development of high myopia显示文摘 | Gentle A Liu Y Martin JE Conti GL McBrien NA | 2003 | J Biol Chem2003,278,16: | 1 |
| 19 | Common Intestinal Parasites显示文摘 | Kucik C J Martin GL Sortor BV | 2004 | Am Faro Physician2004,69,5: | 1 |
| 20 | Common intestinal parasites显示文摘 | Kucik C J Martin GL Sortor BV | 2004 | Am Fam Physician2004,69,5: | 1 |