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61.
ContextNowadays the concept of knowledge mapping has attracted increased attention from scientists in a variety of academic disciplines and professional practice areas. Among the most important attributes of a knowledge map is its ability to increase communication and share common practices across an entire organisation. However, despite being a promising area for research, the knowledge maps community lacks a widespread understanding of the current state of the art.ObjectiveThe objective of this article is to explore the world of knowledge mapping by reviewing and analysing the current state of research and providing an overview of knowledge mapping’s concepts, benefits, techniques, classifications and methodologies, which are precisely reviewed, and their features are highlighted. In addition, we offer directions for future research.MethodBased on the systematic literature review method this study collects, synthesises, and analyses numerous articles on a variety of topics closely related to a knowledge map published from January 2000 to December 2013 on six electronic databases by following a pre-defined review protocol. The articles have been retrieved through a combination of automatic and manual search, hence extensive quantitative and qualitative results of the research are provided.ResultsFrom the review study, we identified 132 articles addressing knowledge maps that have been reviewed in order to extract relevant information on a set of research questions. We found a generally increasing level of activity during this 5-year period. We noted that while existing research covers a large number of studies on some disciplines, such as systems and tools development, it contains very few studies on other disciplines, such as knowledge maps adoption. To aid this situation, we offer directions for future research.ConclusionsThe results demonstrated that a knowledge map is an imperative strategy for increasing organisations’ effectiveness. In addition, there is a need for more knowledge maps research.  相似文献   
62.
康熙《皇舆全览图》与乾隆《内府舆图》是清代采用西方制图方法绘制的两幅巨图,具有里程碑的意义。乾隆图因其后出,在绘制中大量参考、继承了康熙图的既有成果。一般认为。乾隆图的价值在于西北部分的增绘,研究与利用也多集中于此;而对两图在其他地区的细微变化则鲜有考察。文章通过比较两图相同区域内的水系、城镇绘制情况,发现乾隆图在内容上更丰富,一定程度上表现了自康熙朝至乾隆朝东北地区的发展变化。  相似文献   
63.
引入模糊数空间中凸模糊映射和模糊数导概念,定义了凸模糊映射循环单调映射的概念,找到并证明了多个凸模糊映射次微分的性质。  相似文献   
64.
本文计算了二维保面积映象在经过倍周期分岔、同周期分岔到混沌时的拓扑熵,并得到这些映象通向混沌的各种道路和与其对应的拓扑熵之间的关系。  相似文献   
65.
利用压缩映像原理,给出了一类带强迫项的多滞量高阶微分方程所有非振动解趋于零的必要条件,并推广了相应的结果.  相似文献   
66.
ABSTRACT

Modern international studies of educational achievement have grown in terms of participating educational systems. Accompanying this development is an increase in heterogeneity, as more and different kinds of educational systems take part. This growth has been particularly pronounced among low-performing, less economically developed systems. Although studies such as PISA have made modifications to account for increased diversity, the degree to which international assessments serve educational systems at the lower ends of the achievement continuum is understudied. We used modified Wright maps and PISA’s definition of proficiency to evaluate the fitness of PISA, especially among low performers. Our findings suggest that there is mismatch between some populations and PISA. Results from a simulation show that such disparities produced biased achievement estimates and correlations with policy relevant variables. Projected PISA growth and new instantiations of PISA, particularly geared toward developing educational systems, make these findings timely and especially relevant.  相似文献   
67.
定义了几种集值映射的广义凸性,研究了相应的性质刻画及其Gordan—Farkas型定理,并利用此Gordan—Farkas型定理给出了集值映射向量最优化的最优性条件.  相似文献   
68.
Sfard and Kieran [Kieran, C., Educational Studies in Mathematics 46, 2001, 187–228; Sfard, A., Educational Studies in Mathematics 46, 2001, 13–57; Sfard, A. and Kieran, C., Mind, Culture, and Activity 8, 2001, 42–76] have developed a methodological framework, which aims at characterizing the students’ mathematical discourses while they are working in groups. In this study, I focus on an important aspect of this methodological framework, namely the interactive flowcharts. The aim of this study is to suggest two complementary analyses for the construction of the interactive flowcharts: an additional analysis by means of the analytical construct of contextualization as well as an analysis of types of mathematical discourses. Based on data from a study of how four groups of Swedish engineering students collaboratively construct concept maps in linear algebra. I show that the two complementary analyses make the construction of the interactive flowcharts more coherent and transparent, and hence, more reliable. Furthermore, the two complementary analyses dramatically changed the picture as to whether the studied discourses were to be seen as mathematically productive or not. In the end of the article, I discuss the possibilities of performing the suggested additional analyses within the original methodological framework.  相似文献   
69.
关于宋玉<高唐><神女>二赋的主旨,众说纷纭,莫衷一是.我们通过文本内容的分析、祭高唐神女之礼俗分析和<高唐><神女>以事为谏之思想分析,得出了新的结论.我们认为:<高唐><神女>二赋以楚襄王祭高禖为创作素材,借襄王欲幸巫山神女之事为说,劝谏襄王不要把复兴楚国的希望完全寄托在敬天事神的"天命"政治之上,而要面对现实,重视人事,推行"民本"政治,以求楚之王室与国家"延年益寿千万岁".否则即便是巫山神女也不会福佑楚王和楚国.作品反映了宋玉轻天命而重人事的进步思想.  相似文献   
70.
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