Teachers' Conceptions of Education: A Practical Knowledge Perspective on 'Good' Teaching

Research on teachers' practical knowledge is considered to be an alternative to several other research approaches to teaching which study teaching from a limited point of view and from an outsider's perspective, often with the aim of exerting control over teachers. It is argued that research on teachers' practical knowledge takes into account in a better way what really matters in teaching because it emphasizes the knowledge and beliefs of teachers themselves about teaching. In this study, the issue of 'good' teaching is highlighted from a perspective on teaching based on teachers' practical knowledge. The conceptions of education of eight experienced teachers were investigated with a multi-methodical approach. Teachers' conceptions of education consist of their views on the objectives of education, the contents of the curriculum, and the role of the teacher and the students in the teaching and learning process. Several contextual factors and teachers' interpretations of these factors seem to exert influence on teachers' conceptions of education, such as the schools in which they work, the characteristics of the students and subjects they teach, and general developments in society. It is concluded that it is difficult to give a precise definition of good teaching from a practical knowledge perspective because of the personal and context-embeddedness of teachers' practical knowledge. However, the results indicate that research on teachers' practical knowledge adds new information to the discussion of good teaching when compared with the results of more traditional research approaches to teaching.     

The design and evaluation of hypertext structures for supporting design problem solving

Computer-based complex information systems are used increasingly more often, for a growing variety of purposes, in both educational and professional contexts. Since the effectiveness of information systems will largely depend on the particular purpose and the particular task context at hand, at least part of our research efforts should be directed at studying specific application areas. This paper reports a study on the use of hypertext information systems during architectural-design problem solving. Theoretical notions on design problem solving, such as distinguishing between a problem-structuring and a problem-solving phase, provide us with expectations about the changing informational needs during the design process. Specific information structures are proposed, incorporating design principles from learning research, to accommodate these informational needs. Results of an empirical study indeed showed interactions between design phase and information structure when separately inspecting the outcomes for problem structuring and problem solving. Educational implications include the use of a combination of hierarchical decomposition and cross-referencing for certain instructional goals, such as teaching complexity and abstraction.     

后发企业技术追赶微观机理分析

运用后发企业技术追赶的5个基本路径分析模型,通过典型案例分析,讨论后发企业如何在技术上成功追赶西方竞争者的过程,明确企业从低技术走向技术领先者的微观机理．     

The potential impact of quantum computers on society

This paper considers the potential impact that the nascent technology of quantum computing may have on society. It focuses on three areas: cryptography, optimization, and simulation of quantum systems. We will also discuss some ethical aspects of these developments, and ways to mitigate the risks.     

Pre-analytical mysteries: A case of severe hypervitaminosis D and mild hypercalcaemia

We describe a case of severe hypervitaminosis D and mild hypercalcaemia in a 68-year-old woman who presented with fatigue and weight loss. Her 25-hydroxy vitamin D (25OHD) was > 400 nmol/L (50-150) and corrected serum calcium was 2.83 mmol/L (2.1-2.6). Her intact parathyroid hormone (PTH) was 4.9 pmol/L (2.0-9.5). Further investigation revealed an IgM kappa paraprotein, and a bone marrow aspirate confirmed a diagnosis of lymphoplasmacytic lymphoma/Waldenstrom’s macroglobulinemia (LPL/WM). As the vitamin D level was discordant with the patient’s other results and presentation, the presence of an assay interferent was suspected. A 1-in-2 dilution of the sample returned a 25OHD result of 84 nmol/L in keeping with the presence of an interferent. Testing for rheumatoid factor was negative. The sample was treated with an antibody blocking reagent (Scantibodies) and results were not consistent with heterophile antibody interference. The sample was then analysed using liquid chromatography tandem mass spectrometry (LC-MS/MS), which returned a 25OHD result of 82 nmol/L. Testing on an alternative immunoassay platform produced a 25OHD result of 75 nmol/L. Reapeted testing on the original platform following reduction of the monoclonal paraprotein with chemotherapy, returned a result of 64 nmol/L. The patient’s mild hypercalcaemia persisted following resolution of the monoclonal paraprotein, in keeping with a diagnosis of primary hyperparathyroidism. This case highlights the potential for paraproteins to cause assay interference, and the importance of considering interference when results are incongruous with the clinical presentation.     

A Comprehensive Theoretical Framework for Personal Information-Related Behaviors on the Internet

Although there is near consensus on the need for privacy, the reality is that people's attitude toward their personal information privacy is complex. For instance, even when people claim that they value their information privacy, they often trade their personal information for tangible or intangible benefits. In this article, the research on different ways in which people respond to risks to privacy is examined. They include information seeking to reduce uncertainty, the withholding of information, and the provision of fabricated information. The impact of trust and inducements on Internet users’ willingness to share personal information is also examined. Thereafter, important postulates from theories in communication, social psychology, and sociology are synthesized into a comprehensive theoretical framework for personal information-related behaviors in the online environment.     

Through the Looking Glass: Twenty Years of Chinese Internet Research

This article is a report on a research project that collected detailed information on articles, book chapters, books, and so on, published by academics on the Chinese Internet between 1990 and early 2013. The findings of the meta-review of 20 years of Chinese Internet research, as gleaned from quantitative and qualitative analysis of the collected body of publications, are presented and discussed in this report. It engages with the conclusions drawn by previous meta-studies, and seeks to shed a critical, self-reflexive light onto the main discursive formations of their research field. The article concludes that there is still a lot of scope for growth in studies of the Internet in China and lists several of the identified research gaps.