Unique unto itself: The records of the Federal Bureau of Investigation 1908 to 1945

This paper addresses several misunderstandings about the nature of the FBI's Central Records System. Although depicted in popular culture and much of FBI historiography as a tool for the Cold War suppression of American radicals, the FBI's records system grew out of Department of Justice systems already in place before J. Edgar Hoover became Director in 1924. The system grew in size and complexity according to the demands placed on it by the changing priorities of the FBI's criminal and intelligence missions, guided by a “progressive” drive for efficiency through centralization.     

两次世界大战前后的亚欧关系探析

20世纪初叶“亚洲的觉醒”革命风暴作为现代亚洲民族解放运动的序曲 ,对亚欧之间殖民地 (附庸国 )与宗主国的依附关系形成强有力冲击。两次世界大战更是对亚欧关系的演变产生决定性影响。如果说第一次世界大战大大削弱了欧洲对其亚洲殖民地的控制 ,那么第二次世界大战则成为欧洲殖民体系崩溃、亚洲民族新生的历史催化剂 ,使亚欧之间的不平等关系发生了根本性改变。此外二战期间亚欧大陆两端人民在反法西斯斗争中同仇敌忾、互助合作 ,则成为该时期亚欧关系的主要内容。     

浅析美国第二次世界大战残疾退伍军人福利政策

美国退伍军人是一个庞大的特殊群体,残疾退伍军人则是特殊中的特殊。在既享受国家基本退伍福利的同时,二战残疾退伍军人还享受针对身体残疾设计的收入维持性福利、就业优待、医疗福利和残疾辅助装备等福利政策。这些福利政策,既能维持竞争力受到损害后残疾退伍军人的生存,也能保证个人和家庭生活质量的不降低,有利于退伍军人身份的顺利转换,以及美国社会的稳定与发展。     

Enhanced teaching and student learning through a simulator-based course in chemical unit operations design

This paper illustrates a teaching technique used in computer applications in chemical engineering employed for designing various unit operation processes, where the students learn about unit operations by designing them. The aim of the course is not to teach design, but rather to teach the fundamentals and the function of unit operation processes through simulators. A case study presenting the teaching method was evaluated using student surveys and faculty assessments, which were designed to measure the quality and effectiveness of the teaching method. The results of the questionnaire conclusively demonstrate that this method is an extremely efficient way of teaching a simulator-based course. In addition to that, this teaching method can easily be generalised and used in other courses. A student's final mark is determined by a combination of in-class assessments conducted based on cooperative and peer learning, progress tests and a final exam. Results revealed that peer learning can improve the overall quality of student learning and enhance student understanding.     

EDA技术与电子类专业课程的融合教学

针对电子类课程体系中的不足,提出了EDA技术与专业课程融合教学的思想。EDA技术以Multisim,MaxplusII,Protus和Protel为核心,实现了与理论课、课程实训和综合实训的有机融合,既发挥了EDA技术的新颖性、实用性和可操作性的优点,又弥补了专业课程中教师教和学生学都困难的不足。     

1966年军事政变与乌干达民族国家的发展

乌干达独立以来军事政变频发。1966年军事政变是乌干达独立以来的第一次军事政变。这场政变虽然遏制了巴干达人的地方民族主义分裂倾向,维护了国家的统一;但政变也导致了国内民族间的矛盾,新的地方民主主义力量泛滥起来,为乌于达民族国家未来的发展埋下了隐患。     

美国生物医学类国家实验室建设案例剖析及对我国的启示——以弗雷德里克癌症研究国家实验室为例

通过对隶属于美国卫生与公众服务部的生物医学类国家实验室——弗雷德里克癌症研究国家实验室的建设思路、运营机制、科研实力、研发经费收支情况、大型科学设施的开放共享、教育和社会服务及开放合作等方面进行研究,分析特点,借鉴经验,为我国生物医学类国家实验室建设提供参考。     

平行/重合D膜超势，Ooguri-Vafa不变量与类型II弦理论/F理论对偶

利用类型Ⅱ弦理论/F理论对偶,第一次在平行和重合相区计算一个具体的双D膜系统的超势,并提取Ooguri-Vafa不变量。平行D膜相与重合D膜相间的相变也对应着D膜世界叶上规范理论规范对称性的提升U（1）×…×U（1）→U（n）。计算显示这两个相区的超势截然不同,并给出不同的Ooguri-Vafa不变量。这意味着相变的发生导致两个相区能谱结构的差异。