论荀子的社会分层思想及其特点     

马志刚 《青海师专学报》2002,22(1):20-22

荀子理论中蕴涵着丰富的社会分层思想。人性论和社会起源论是其理论基础，等级分层和职业分层是其理论核心，礼制是其实现社会分层和建立王道政治秩序的手段。研究荀子的这一思想，将有助于对当前社会不平等现象作出正确的分析。  相似文献   

我国保障措施立法的缺陷及完善     

蒋玉玲 《漯河职业技术学院学报》2007,6(2):153-155

中国入世之后,必须依世贸规则行事,其中的保障措施制度至关重要.但中国的保障措施立法层次不高,在实体和程序规定上存在缺陷和漏洞,迫切需要完善.  相似文献   

High-School Students' Attitudes Regarding Procedural Abstraction   总被引：1，自引：0，他引：1  

Bruria Haberman 《Education and Information Technologies》2004,9(2):131-145

During the last decade a new computer science curriculum has been taught in Israeli high schools. This curriculum introduces CS concepts and problem-solving methods independently of specific computers and programming languages, along with the practical implementation of those concepts and methods encountered in actual programming languages. The advanced study unit of the curriculum, Software Design, introduces the students to various aspects of software systems design through the use of abstract data types (ADTs). One main goal of the unit is to develop abstract thinking skills and problem-solving abilities. More specifically, the unit presents principles such as procedural abstraction, data abstraction, information hiding, modularity, efficiency, and reuse of code.We present the results of a preliminary study whose aim was to assess students' attitudes regarding procedural abstraction. The research population consisted of high-school students who attended the Software Design course (beginners), and a control group of undergraduate CS students (advanced). The results of the study clearly indicated a significant difference between the attitudes of the two groups. We found that the advanced students preferred algorithms that were formulated to some extent with high-level abstraction; however, they encountered a cognitive barrier when dealing with algorithms that they had evaluated as too abstract for them. However, beginners felt more comfortable with algorithms with low-level abstraction. Nevertheless they showed open-mindedness toward some degree of procedural abstraction. The results of the study were used to design scaffolding problem-solving tools for algorithm development, utilizing procedural abstraction techniques that can be adapted to various student populations (Haberman, B. (2002) SIGCSE Bulletin, 34(4), 60–64).  相似文献   

A Random Multi-Access Method for Data Services in CDMA Cellular System     

李振  尤肖虎 《东南大学学报》1997,(2)

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The Reflection of Cultural Differences in a Joint Performance     

Wang Weiping  Wang Ping 《广西大学梧州分校学报》2003,(1)

Cultureisoneofthemostdifficulttermstobewelldefined.NewWebstersDictionarysaysitisnotonly"theacquiredabilityofanindividualorapeopletorecognizeandappreciategenerallyacceptedestheticandintellectualachievementofcivilizationoraparticularstageorstagesofcivilizationasinthecaseofacertainnationorperiod"butalso"thetotalofhumanbehaviorpatternsandtechnologycommunicatedfromgene-rationtogeneration".Thelatterisananthropologicalandsociologicaldefinition,whichagreeswithLongmanModernEnglishDictionary'sthirddef…  相似文献   

Visual C++编程巧妙实现对窗口的操作     

鲍美英 《雁北师范学院学报》2006,22(2):26-28

介绍了如何使用Visual C 编程技巧,实现创建不规则形状窗口、修改主窗口风格的操作．  相似文献   

向下兼容DAMB系统信道编码的研究     

严添明 《宁波职业技术学院学报》2007,11(5):68-70,80

对向下兼容DAMB系统中的信道编码进行了研究。在DAMB虚拟无线电Matlab仿真平台仿真时采用迭代多级译码方法,分别进行了一次和二次迭代;同时,采用二元Turbo编码,接收端采用串联迭代译码。在Matlab平台上针对DRM标准建议的多级删除卷积码(RCPC)和Turbo码的数字调幅广播系统两种编码方法,分别在AWGN信道和Rice衰落信道中进行了性能仿真。结果表明,Turbo码可获得比两次迭代多级译码更好的性能。在AWGN信道下,Turbo码经过10次迭代译码能获得近3dB增益;在Rice衰落信道下,Turbo码经10次迭代译码可以获得近2dB左右的增益。  相似文献   

‘It has a purpose beyond justifying a mark’: examining the alignment between the purpose and practice of feedback     

Martina Van Heerden 《Assessment & Evaluation in Higher Education》2020,45(3):359-371

Abstract

Research has shown that written feedback is important for student learning and development. However, the messages embedded in feedback may lead to students being misled about what they need to learn or how they need to develop. This article reports on a small-scale investigation into the messages embedded in feedback. Legitimation Code Theory was used to first conceptualise the often-hidden purpose of a discipline (English Studies), and concomitantly of feedback within the discipline, and second to analyse actual comments given to first-year students on their assignments. It was found that there is a clear misalignment between the purpose and practice of feedback, thereby suggesting that students are receiving misleading messages about what they need for success within the discipline. This may have implications beyond merely passing the module. A suggestion is made to actively consider, and develop, feedback as a discipline-specific literacy.  相似文献   

基于复小波包和turbo码的STBC-MC-CDMA系统及其性能     

虞湘宾  毕光国 《东南大学学报》2005,21(4):398-404

在分析空时编码技术和多载波CDMA技术原理的基础上,采用turbo编码作为信道编码以及优化的复小波包作为多载波调制,提出一种基于复小波包和turbo码的空时分组编码的MC-CDMA系统,研究了其在瑞利衰落信道下的误码率性能.该系统能充分利用空时分组编码的发送分集和turbo码的良好抗信道衰落能力显著提高系统性能,而且还能利用优化复小波包的优良特性避免通常MC-CDMA系统由于插入循环前缀(CP)所带来频谱效率的降低.仿真结果表明,基于复小波包的空时分组编码的MC-CDMA系统要好于空时分组编码的通常MC-CDMA(STBC-MC-CDMA)系统,略好于采用CP的STBC-MC-CDMA系统;级联turbo码的空时编码技术的应用进一步增强了系统抗衰落信道下的各种干扰能力.  相似文献   

关于线性码的自同构群的研究     

屈力进 《广东教育学院学报》2008,28(5):38-40

证明了任意线性码等价于系统码,从而将线性码的自同构群的研究转化为对与其等价的系统码的自同构群的研究,并给出了相应的算法,简化了线性码的自同构群的计算．  相似文献