远程教育中的流媒体技术

众所周知,远程教育已经成为教育开放的四个领域之一.而随着我国现代化教育水平的提高,一个新的历史机遇正出现在面前.目前,我国的远程教育尤其是现代远程教育正在蓬勃发展.随着网络技术的发展及网络环境的完善,流媒体(stream Media)技术作为互联网中视音频传输的核心技术越来越普及,而这一新技术的在远程教育中的应用,必将给网络教育带来了新的活力和生机.     

小布什及其政府违宪表象剖析

《美利坚合众国宪法》第二条第二款及第三款以枚举方式明文规定了赋予总统的权力,而美国开国元勋们更是力图在《宪法》框架内建立强有力联邦政府的同时,以《宪法》所体现的“联邦制”和“三权分立、权力制衡”原则对联邦政府及总统权力加以限制。而小布什出任美国总统至今,却一再违背其两度宣誓就职时“竭尽全力贯彻、保护和捍卫合众国宪法”的誓言,以种种理由为借口挑战《宪法》权威性,在尼克松“帝王式总统制”基础上又向前迈进了一大步。文章即旨在对小布什及其政府的违宪表象进行简要梳理分析,并就其作为给出客观公正的评价。     

公司自治与我国公司法修改

公司自治是社会自治的重要组成部分，要真正实现必须具备两个基本要件：一、公司法律人格独立；二、具有相应的法制保障。但在我国，公司法律人格难以真正独立；非国有公司与国有公司法律地位不平等；公司法重强制性、实体性规范，轻任意性、程序性规范。因此，为保证公司自治，必须对公司法作相应修改。     

Adaptive terminal sliding mode control for high-order nonlinear dynamic systems

ＩＮＴＲＯＤＵＣＴＩＯＮＣｏｎｓｉｄｅｒａｂｌｅａｔｔｅｎｔｉｏｎｈａｓｂｅｅｎｆｏｃｕｓｅｄｏｎｔｈｅｃｏｎｔｒｏｌｐｒｏｂｌｅｍｏｆｕｎｃｅｒｔａｉｎｄｙｎａｍｉｃａｌｎｏｎ ｌｉｎｅａｒｓｙｓｔｅｍｓｓｕｂｊｅｃｔｔｏｅｘｔｅｒｎａｌｄｉｓｔｕｒｂａ     

苏氏蜀学文艺思想的巴蜀文化特征

苏氏蜀学为宋学的重要学派、也是巴蜀化中极具特色的一支。蜀学之成，始于三苏父子。就苏氏蜀学中的艺思想与巴蜀化的密切关系进行分析，可以看出，苏氏艺思想的形成与巴蜀化中的两汉先贤意识、杂学色彩、切人事重抒情、尚操守重节气、富异端色彩和反叛精神等关系至密，苏氏蜀学既孕育于巴蜀化之中，又为巴蜀化增添了无数光彩。     

Pedagogical Considerations for Examining Rater Variability in Rater‐Mediated Assessments: A Three‐Model Framework

Rater‐mediated assessments are a common methodology for measuring persons, investigating rater behavior, and/or defining latent constructs. The purpose of this article is to provide a pedagogical framework for examining rater variability in the context of rater‐mediated assessments using three distinct models. The first model is the observation model, which includes ecological/environmental considerations for the evaluation system. The second model is the measurement model, which includes the transformation of observed, rater response data to linear measures using a measurement model with specific requirements of rater‐invariant measurement in order to examine raters’ construct‐relevant variability stemming from the evaluative system. The third model is the interaction model, which includes an interaction parameter to allow for the investigation into raters’ systematic, construct‐irrelevant variability stemming from the evaluative system. Implications for measurement outcomes and validity are discussed.     

腐蚀钼阴极尖端溶液的配制

报导了一种配制腐蚀阴极尖端溶液的方法，用这种方法配制的溶液来腐蚀钼阴极尖端，得到了尖端曲率半径为0．1——0．6μm，这样的阴极尖端其发射特性能够满足我们用这种金属（钼）树料来制作阴极尖端的要求。     

(Residual) Public Music Radio in the Streaming Era: Listening for Diversity and Frequency on CBC Music

The aim of this article is to assess whether and how the CBC’s music radio programming reflects the corporation’s mandate of showcasing a diversity of music and culture. I argue that a program logic that privileges an international corporate music industry strategy persists (particularly during the peak morning and afternoon drive time programs) and limits the capacity for public radio to imagine and project alternative musical trajectories. My aspiration is to imagine CBC Music’s over-the-air radio as a residual broadcast service, one that presents novel opportunities at a time when digital and online streaming music is dominant.