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| 1 | 磁障转子无刷双馈电机显示文摘为了研究在转子铁心中引入磁障对磁阻转子无刷双馈电机性能的影响,基于场路耦合有限元分析,对比研究了转子极弧系数与磁障数量及结构参数对无刷双馈磁阻电机性能的影响,并在此基础上,提出了一种结构简单、性能较好的无刷双馈磁障转子设计方案。通过样机实验,验证了该磁障转子无刷双馈电机的设计方法及其双馈运行特性。理论分析和实验研究结果表明:在电机结构尺寸相同情况下,通过在转子铁心中适当引入磁障,可以有效地改善磁阻转子无刷双馈电机的性能,并使其保留普通磁阻转子结构简单和成本低廉的优点。 | 张岳 王凤翔 邢军强 Milutin Jovanovic David Atkinson | 2012 | 电工技术学报2012,27,7: | 23 |
| 2 | 面向对象的数据库系统宣言显示文摘这篇文章试图定义面向对象的数据库系统。它描述了作为一个合格的面向对象的数据库系统所应具备的主要性质和特征。我们把这些特性分成了三组: ·必备的:被称作面向对象的数据库系统所必须满足的特性。它们是复杂对象,对象标识,封装性,类型或类,继承性,结合滞后联编的复载,可扩充性,计算完备性,持久性,辅存管理,并发性,恢复和即席查询功能。·可选的:为了使系统更完善可添加的而非必备的特性。它们是多重继承性,类型检查和推理,分布,设计事务处理和版本。·开放的:设计人员可以选择的特性。它们是程序设计范例,表示系统,类型系统及一致性。我们的立场是,不祇望上述看法成为一个里程碑,以便为进一步的讨论指明方向。 | Malcolm Atkinson Francois Bancilhon David Dewitt Klaus Dittrich David Maier Stanley Zdonik 王宗斌 王珊 | 1990 | 计算机科学1990,17,3: | 3 |
| 3 | Immune modulation of effector CD4+ and regulatory T cell function by sorafenib in patients with hepatocellular carcinoma显示文摘 | Roniel Cabrera Miguel Ararat Yiling Xu Todd Brusko Clive Wasserfall Mark A. Atkinson Lung Ji Chang Chen Liu David R. Nelson | 2013 | Cancer Immunology Immunotherapy2013,,4: | 3 |
| 4 | Usefulness of prognostic indices in upper gastrointestinal bleeding显示文摘 | Robert James Atkinson David Paul Hurlstone | 2007 | Best Practice & Research Clinical Gastroenterology2007,,2: | 2 |
| 5 | Macroinvertebrate assemblages of surface mine wetlands of Southwest Virginia,USA显示文摘MacroinvertebrateassemblagesofsurfaceminewetlandsofSouthwestVirginia,USA¥DavidH.Jones;RobertB.Atkinson;JohnCairns,Jr.(Departm... | David H.Jones Robert B. Atkinson John Cairns,Jr.(Department of Biology,Virginia Polytechnic Institute and State University, Blacksburg,Virginia 24061 USA) | 1996 | Journal of Environmental Sciences1996,8,1: | 2 |
| 6 | Suppression of line voltage related distortion in current controlled grid connected inverters显示文摘 | Tusitha Abeyasekera Johnson C Mark Atkinson David J | 2005 | IEEE Transactions on Power Electronics2005,20,6: | 1 |
| 7 | 新西兰的生态恢复显示文摘新西兰是全世界最奇怪的大批奇妙动物的家园之一。最近还发现了某些可属于世界最大昆虫之列的不会飞的大蟋蟀。与此同时,世界上最重和最独特的鹦鹉鸮鹦正处在灭绝的边缘。这个国家的植物也独具特色。新西兰拥有大部分的分叉灌木(具有奇怪的联锁和旋绕分支的的植物),三种不同尺寸的雏菊点缀着亚高山地带。它的植物和动物是如此不平常,以至洛杉矶加利福尼业大学生理系教授贾立德·裁蒙特提出,它们提供了我们研究外星球生命的最精密的近似物。 | David Towns Ian Atkinsons 胡季平 程发泉 | 1992 | 地理译报1992,,1: | 1 |
| 8 | Stereolithographic biomodelling in cranio-maxillofacial surgery: a prospective trial显示文摘 | Paul S. D’Urso Timothy M. Barker W. John Earwaker Lain J. Bruce R. Leigh Atkinson Michael W. Lanigan John F. Arvier David J. Effeney | 1999 | Journal of Cranio-Maxillofacial Surgery1999,,1: | 1 |
| 9 | Capital theory and the measurement of sustainable development:an indicator of'weak'sustainability显示文摘 | David W Pearce Giles D Atkinson | 1993 | Ecological Economics1993,8,2: | 1 |
| 10 | Analytical study of grid-fault response of wind turbine doubly fed induction generator显示文摘 | Graham Pannell David Atkinson | 2005 | IEEE Trans on Energy Conversation2005,25,4: | 1 |
| 11 | Measuring sustainable development : progress on indicators 显示文摘 | David Pearce Kirk Hamilton Giles Atkinson | 1996 | Environment and Development Economics1996,,1: | 1 |
| 12 | Histopathologic Diagnosis of Chronic Graft-versus-Host Disease: National Institutes of Health Consensus Development Project on Criteria for Clinical Trials in Chronic Graft-versus-Host Disease: II. Pathology Working Group Report显示文摘 | Howard M. Shulman David Kleiner Stephanie J. Lee Thomas Morton Steven Z. Pavletic Evan Farmer J. Margaret Moresi Joel Greenson Anne Janin Paul J. Martin George McDonald Mary E.D. Flowers Maria Turner Jane Atkinson Jay Lefkowitch M. Kay Washington Victor G | 2006 | Biology of Blood and Marrow Transplantation2006,,1: | 1 |
| 13 | Teaching in the target language: a problem in the current orthodoxy显示文摘 | David Atkinson | 1993 | Language Learning Journal1993,,1: | 1 |
| 14 | 新西兰的生态恢复显示文摘新西兰是全世界最奇怪的大批奇妙动物的家园之一。某些可属于世界最大昆虫之列的不会飞的大蟋蟀只是最近才被发现。与此同时,世界上最重和最独特的鹦鹉鸮鹦正处在灭绝的边缘。这个国家的植物也独具特色。新西兰拥有最大部分的分叉灌木(具有奇怪的联锁和旋绕分支的植物),三种不同尺寸的雏菊支配着亚高山地带。它的植物和动物如此不平常以至洛杉矶加利福尼亚大学生理学教授贾立德·戴蒙特提出,它们提供了我们研究外星球生命的最亲近的近似物。新西兰幸存的最著名的奇怪生物是不会飞的几维鸟,它的蛋与身体的比例在已知的任何鸟类中是最大的。这里还有在大型草本植物上生活的不会飞的大象鼻虫。新西兰有些巨大的陆地食肉蜗牛经测量直径有10厘米。该国家是三叠纪槽齿类动物的一种近亲楔齿蜥的家乡。它具有与任何温带蜥蜴最为不同的选择。 | David Towns Ian Atkinsons 胡季平 程发泉 | 1993 | 世界科学1993,,1: | 1 |
| 15 | Observers for induction motor state and parameter estimation 显示文摘 | David J Atkinson Paul P Acarnley et | 1991 | IEEE Trans IA1991,,6: | 1 |
| 16 | Empirical Ground-Motion Relations for Subduction zone Earthquakes and Their Appli- cation to Cascadia and Other Regions显示文摘 | Gall M Atkinson David M Boore | 2003 | Bulletin of the Seis- mological Society of America2003,93,4: | 1 |
| 17 | Grading Ovarian Serous Carcinoma Using a Two-Tier System显示文摘 | Anais Malpica Michael T Deavers Karen Lu Diane C Bodurka Edward N Atkinson David M Gershenson Elvio G Silva | 2004 | The American Journal of Surgical Pathology2004,,4: | 1 |
| 18 | Diagnosis of heterotaxy syndrome by fetal echocardiography显示文摘 | David E. Atkinson Stacey Drant | 1998 | The American Journal of Cardiology1998,,9: | 1 |
| 19 | Have the Harmful Effects of Introduced Rats on Islands been Exaggerated?显示文摘 | David R. Towns Ian A. E. Atkinson Charles H. Daugherty | 2006 | Biological Invasions2006,,4: | 1 |
| 20 | Automatic correction of motion artifacts in magnetic resonance images using an entropy focus criterion显示文摘 | David Atkinson Hill Derek L G | 1997 | IEEE Transactions on Medical Imaging1997,16,6: | 1 |