Fault tolerance of cooperative interception using multiple flight vehicles

Cooperative interception of a moving target by multiple vehicles is studied. The main contributions of research work presented in this paper include: (1) cooperative interception is achieved for multiple vehicles to reach the target simultaneously at a finite time, by proposing and solving for a novel finite-time consensus problem and (2) in addition, the cooperative interception is investigated with tolerance of actuator or network failures, where novel fault tolerant consensus protocols are proposed to address actuator failures (or loss of effectiveness) and network failures, respectively. The maximum fault tolerance against network failures can be estimated. Simulations of a three-against-one interception case are presented to demonstrate the effectiveness of the proposed design approaches.     

Proceedings of the British hackademy

As journalism has become a ‘profession’, universities around the country have begun offering courses which prepare students to enter the field. The author, a journalist, discusses his experiences of teaching on one such course.     

Issues in Assessment,Enterprise and Higher Education: the case for self‐peer and collaborative assessment

The debate surrounding assessment in education and the tensions it has caused is based upon conflicting ideologies in society. Enterprise in Higher Education and other initiatives have raised the awareness of staff to these issues and caused many of us to rethink the way in which we educate students. Changing the structure of assessment has enabled us to start adopting methods which are more student centred and appropriate to the demands of employers in particular and society as a whole more generally. There is a strong case for adopting a, more collaborative approach which breaks away from traditional norms and, while assessing students’ abilities in a summative sense, helps them to develop an awareness of their strengths and weaknesses in a formative way.     

公民教育的进展研究：发达国家的探索

21世纪初,无论是在国家层面还是在国际范围,人们都开始对公民教育产生新的兴趣。越来越多具有多元文化的民主国家对作为民主公民教育基础的人权教育的国际共识、全球化进程所带来的统一性与多样性之间关系的冲突特征、许多民主的民族一国家对公民（特别是年轻人）的政治参与水平以及对种族主义倾向的反民主运动的忧虑等,都被看作是引进和加强公民教育的原因。一个由国际学者组成的研究小组,通过考察、研究为我们确认了多元文化的民主体系中公民教育在教学方面的一些重要原则、概念以及公民教育对学校课程的促进。发达国家在实践方面的经验显示,成功的公民教育要求一个清晰的政策框架和专业的教师培训等。     

Teachers’ Perceptions of the Goals of Education in the USA: responses to the educational reform literature of the 1980s

What do teachers in the USA perceive as the significant goals and purposes of education? To what extent are these perceptions related to those advocated in the reform literature of the 1980s? Responses to a survey administered to 279 teachers in metropolitan Atlanta, Georgia are analyzed in this study. Findings indicate some areas of congruence between teachers and reformers. In areas where the reform literature is divided, especially with regard to educational purpose, teacher opinion is similarly divided. Teacher responses, however, also indicate some attempt to synthesize seemingly disparate views. To provide an expanded frame of reference, the article offers some preliminary findings based on John Goodlad's Teachers for Our Nation's Schools. The article concludes with commentary about the nature and likelihood of educational reform in the USA.     

"东"写"西"说--提高您的写作能力,加强您对跨文化的了解

休·唐士力出生于伦敦,受教育于英国,他最先学习拉丁和希腊“传统” (或者说死)语言,继而改学“现代”(或者说活)语言:法语、德语、西班牙语。其大部分的职业生涯都在位于法国的一家国际宇航公司的商务部度过,但他始终对语言、语言结构和语言发展保持了浓厚的兴趣。他因为工作原因第一次去中国是在1990年。在后来的12年里,他以每年10次的频率频繁出