有源滤波器的计算机仿真模拟

介绍了OrCAD/Pspice 9软件的特点及其应用 ,并运用该软件设计了一个二阶模拟带通滤波器 ,对它进行计算机仿真模拟。     

Wandel in der Fremdsprachenpolitik der DDR

Ohne Zusammenfassung     

Excellence of analysis to diversity of advocacy: The multiple roles of the Leverhulme study into the future of higher education

The Leverhulme programme of study into the future of higher education is an impressive analytical effort carried through with expediency and allowing for wide participation. However, the programme is not only an ambitious exercise in policy analysis and unorthodox planning. It also involves processes of bargaining and policy advocacy. But the demands of these different roles have not been openly examined. Thus the programme has unnecessarily rendered itself open to criticism. In particular, many of the recommendations echo a consistent plea for new institutional arrangements for central co-ordination and top-down management and control. These recommendations, however, have received little or no underpinning and are actually at odds with some of the most qualified studies of the Leverhulme programme itself. Furthermore, the programme has tended to neglect two of the most urgent tasks of policy analysis, namely to outline a range of available options - rather than to produce a broad consensus view - and to clearly spell out major value tradeoffs involved - rather than to assure that there are no significant drawbacks attached to the options being advocated.Prepared when the author was a Visiting Scholar of the Comparative Higher Education Research Group, University of California, Los Angeles. The author is indebted to the Director of the Group, Professor Burton Clark, for incisive comments on some of the issues raised by the Leverhulme Programme and to Dr. Gary Rhoades of the same Group for helpful comments on a previous draft of the article.     

“哈姆雷特”拖延复仇的心理分析

莎士比亚是英国艺复兴时期伟大的诗人和戏剧家。他的作品《哈姆雷特》是最伟大的悲剧之一，剧中人物哈姆雷特是一个悲剧性人物，主要是通过他的拖延复仇来表现的。冲突的主题是曲折复杂的。作通过一个宫廷复仇故事，从各方面反映了整个社会和时代的特性。在《哈姆雷特的拖延复仇分析》中，作主要从宗教道德和心理两方面浅析了造成悲剧的原因。从而提示了哈姆雷特这个矛盾人物的内心世界，以及造成拖延复仇的真正原因所在。《哈姆雷特》在世界学史上是颗永不衰落的恒星。它的成功之处一直被后人所模仿，是一部优秀的典范之作。     

MICROSTRUCTURE OF AS-MELT SPUN Al-Cu-Mg-Fe-Ni ALLOY AND ITS VARIATION IN CONTINUOUS HEAT TREATMENT

ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｒｅａｒｅｒｅｐｏｒｔｓｏｆｅｘｔｅｎｓｉｖｅｉｎｖｅｓｔｉｇａｔｉｏｎｓｏｎｔｈｅｐｒｅｃｉｐｉｔａｔｉｏｎａｎｄａｇｅｉｎｇｈａｒｄｅｎｉｎｇｏｆＡｌ Ｃｕ Ｍｇａｌｌｏｙｓ (Ｃｈｅｎｅｔａｌ.,1 997;Ｓｈｉｈｅｔａｌ.,1 996;Ｈｕａｎｇｅｔａｌ.,1 995) .Ｃｏｐｐｅｒａｎｄｍａｇ ｎｅｓｉｕｍｃｏｎｔｒｉｂｕｔｅｔｏｔｈｅｐｒｅｃｉｐｉｔａｔｉｏｎｈａｒｄｅｎｉｎｇａｔｔｅｍｐｅｒａｔｕｒｅｓｏｆｕｐｔｏ 2 0 0℃ .ＡｄｄｉｔｉｏｎｓｏｆｉｒｏｎａｎｄｎｉｃｋｅｌｔｏＡ…     

When transnational curriculum policy reaches classrooms – teaching as directed exploration

ABSTRACT

The purpose of this article is to explore how education policy that is both enabled and constrained by transnational policy flows and national policy built up by social, cultural and historical traditions are enacted through curriculum at the classroom level. The focus is on how policy rationality embedded in the structure and content of curriculum is transformed into certain rationalities in classroom teaching. By understanding lessons as ‘curriculum events’, the study reveals a dominant classroom discourse of recitation and similar triadic communication patterns, which is in accordance with other classroom studies. However, in the article it is argued that the version of teaching that emerges in this study, interpreted in a broader context of an international standards movement, can be understood in terms of directed exploration based on the teacher’s role as an explorer of what the students know, think and understand in relation to the acquisition of knowledge prescribed in the curriculum’s knowledge requirements. Even though the form of recitation is well known, the reason for choosing this teaching repertoire is somewhat new and can be related to the teacher authoring a basic oral text in accordance with assessment standards.