试论替换中项法——对三段论方法的反思与重建

词项逻辑特别是其中的核心部分直言三段论教学内容和方法的革新势在必行。现有的三段论方法本身都存在问题,应该重新探索能克服现有三段论方法的缺陷、能够解决三段论所有问题的简易方法,以利于逻辑学通识教育。研究表明,替换中项法正是我们发现的这种方法。     

Historical pigments characterisation by quantitative X-ray fluorescence

Most of the historical paints are mainly constituted by inorganic pigments, either pure or mixed, spread on the surfaces using different binding agents. The knowledge of the exact amount of different constituents of the paint, as well as of the mixing and pictorial techniques, is crucial for a careful program of conservation of polychrome works. Moreover, since the availability of these pigments has been changing through the centuries, their identification and chemical characterisation is useful to acquire or deepen information about the artist and his/her work. This information can also be useful for authentication purposes through relative dating because the identification of one pigment respect to another one can be used as a terminus post quem or ante quem the artwork was realized. In this work, X-ray fluorescence data from historical pigments, both pure and mixed, will be presented, in order to obtain quantitative information on the samples and to extract calibration curves to the aim of evaluating the pigment concentration in unknown mixtures.     

信息组织论纲

信息组织论纲宋彩萍霍国庆ＡＢＳＴＲＡＣＴＴａｋｉｎｇｔｈｅｔｈｅｏｒｅｔｉｃａｌｂａｓｉｓｏｆｂｕｉｌｄｉｎｇｉｎｆｏｒｍａｔｉｏｎｏｒｇａ－ｎｉｚａｔｉｏｎａｓａｓｔａｒｔｉｎｇｐｏｉｎｔ，ｔｈｅｐａｐｅｒｐｕｔｓｆｏｒｗａｒｄｔｈｅｖｉｅｗｏｆｄ...     

篮球运动竞技能力结构特征及非衡补偿

本文通过对篮球运动个人竞技能力、集团竞技能力以及竞技能力的非衡补偿3个层面进行探讨．旨为提高我国篮球运动整体训练水平有所帮助．     

What contemporary work are student ratings actually doing in higher education?

It is conventionally assumed that student ratings perform a significant function in driving improvement in pedagogical practices in higher education. As a result, this form of evaluation has gradually become institutionalised in recent decades as an essential proxy for understanding teaching and course quality in universities across the world. However, with the rise of market-based models in higher education and heightened expectations for accountability mechanisms, the role and functional purpose of ratings-based student evaluation have become increasingly confused. This rising ambiguity has created strong tensions between the seminal drive of student ratings as a tool of quality improvement, and the emerging demands for its use as a transparent accountability measure for the comparative assessment of academic performativity. So are student ratings now largely a tool of quality assurance or performance measurement, or do they remain a legitimate tool for pedagogical improvement? This paper reports on a study that responded to this critical question by considering the contemporary work of student ratings in a major Australian university. The outcomes of this research demonstrate that tension between improvement and accountability motives is causing considerable confusion and discord around the role and value of the student voice. It also reveals that academics are tending to discount the often critical insights of students on the implications of their pedagogical practices as a result of the elevating institutional role of student ratings as a proxy for teaching quality. In considering these outcomes, rising levels of academic dissonance around student ratings would suggest a necessity to consider broadened evaluative strategies that are able to more effectively capture the improvement potential offered by the student voice.     

Researching Internet Communities: Proposed Ethical Guidelines for the Reporting of Results

Communication researchers and social scientists are quickly discovering the value of data that exists in the postings of members of Internet e-mail, Usenet, and real-time groups. The ability to communicate with one's peers, no matter how esoteric the interests, is causing an explosion in the number of new virtual communities. The interpersonal dynamics of these groups are increasingly coming under the scrutiny of academic research. The publicly available archived records of Internet virtual communities are being analyzed for a wide variety of research interests. The ability to do naturalistic observations of group dynamics, as they are exhibited in these exchanges of text, has captured the attention of many researchers. The institutional review boards of major universities are granting researchers exempt or expedited (exempt from full review) status for this work, due to the public nature of the notes being analyzed. These studies often involve the lack of informed consent, where the group members under study are unaware they are being monitored. There is a potential for psychological harm to the members of these groups, depending on the way results are reported. This article explores the ethical considerations that must be taken into account to protect cyberspace participants. The guidelines proposed are based on the American Psychological Association ethical guidelines for use of human subjects in research. An explanation is offered as to how such guidelines can best be applied to the study of Internet communities. The constructs of Group Accessibility (the public/private nature of the actual cyberspace occupied by a group) and Perceived Privacy (the level of privacy that group members assume they have) are defined and proposed as two dimensions by which individual Internet communities may be evaluated in order to assure the ethical reporting of research findings.     

高师小学教育研究方法与教学改革的思考与实践

为适应基础教育改革和发展对高师院校提出的研究型教师培养要求,作为初等教育专业主干课程的小学教育研究方法,主要从以下几方面进行课程与教学改革：改革课程内容,增强课程的针对性和适用性;改革教学模式与教学方法,探索＂讲授—体验—反思—评价＂四环节研究性教学模式,采用多种教学方法,突出学生的自主探究和操作体验;改革评价方法,突出评价的发展功能;促进教师专业发展职前职后一体化。     

中国外汇储备时间序列分析建模与预测——基于ARIMA模型

基于时间序列分析方法对中国2000～2010年月度外汇储备余额数据序列进行建模,通过验证序列的趋势特征,并从中选择最佳拟合模型,预测中国2011年上半年外汇储备规模增长情况。实证分析结果表明,所选模型能较为精确的预测中国外汇储备规模,与实际偏差在0.3%以内,在外汇储备管理研究中将有较大应用价值。     

利用2,4-二硝基苯肼做吸附剂进行现代居室中痕量甲醛的富集定量

本文用敷有2,4-二硝基苯肼的高分子多孔微球做吸附剂,将甲醛富集起来,然后用乙腈溶剂脱附,再通过一个5μm的C18柱进行分离,最后用高效液相色谱法测定。     

1999-2010年“数字海洋”文献定量分析

本文以"数字海洋"为主题,检索中国知网学术文献总库,对检索文献进行定量分析,结果表明:"数字海洋"相关文献数量自1999年开始逐年增多,其研究重点主要集中在海洋学、计算机基础和应用领域,高等学校和国家海洋局直属机构是发文的主体。