伞形科植物染色体数目报告

 Chromosome numbers are reported for 26 species and varieties of Umbelliferae which belong to 3 subfamilies and 19 genera in this paper.  Of these, 13 counts are new records and some problems about chromosome numbers of Umbelliferae are simplydiscussed.     

Learning residential electrical wiring through computer simulation: The impact of computer‐based learning environments on student achievement and cognitive load

Multimedia learning environments such as computer simulations are widely accepted as tools for supporting science learning. Although the design of multimedia learning environments can be domain specific, few studies have focused on the use of computer simulations for learning residential electrical wiring. This study aimed to determine whether students using computer simulations learned better than traditional classroom learners in the domain of residential wiring. A quasi‐experiment was implemented with 169 high school students. The simulation group participated in a series of computer simulations, whereas the control group received lectures and demonstrations from an instructor. Students' cognitive load as elevated by multimedia leaning tasks was compared with that of students learning using traditional methods. The simulation group learned significantly better and reported higher cognitive load than did the control group. Moreover, the simulation group managed cognitive resources more efficiently on transfer of learning than did the control group. Having more opportunities to interact with a simulation‐based learning environment could result in higher cognitive load. The higher cognitive load seemed to result in better performance on the achievement test and, therefore, the learners' mental effort was possibly invested mainly in meaning making in the virtual learning environments. Discussion of the results, instruments and research design, as well as suggestions for future studies are provided.     

面向中国专利文献的零形回指消解规则研究

[目的/意义]面对海量专利文献,如何使用户快速、精准地掌握知识,是优化专利服务的关键课题.中文专利文献中大量存在的零形回指现象,严重影响了知识的自动识别与提取,但由于专利文献零形回指识别与消解涉及到众多文本分析技术及特定资源建设,因此,目前尚未发现针对性研究.[方法/过程]在物性结构理论、语义角色及修辞结构关系理论的指导下,展开相关规则的研究,开发句法及语义角色标注工具和篇章标注工具两种工具,并构建了4个资源库:①"专利动词物性角色库",将专利的动词归纳为4类;②"专利知识论元结构库",用于自动标注专利动词物性角色及其论元结构;③"专利动词论元结构规则库",用于分析零形回指的先行语;④"零形回指修辞结构类型库",用于分析当零形回指搭配"功能角色"和"部件角色"的情况.[结果/结论]通过资源库的建设,得出5条消解规则.初步成果已成功应用于机械领域专利文献的自动处理工作.     

Creating a Business Strategy Evaluation Model for National Museums Based on the Views of Curators

The aim of this study is to find the critical factors that influence Taiwan's national museum business performance based on its curators’ views. The study explored the causal relationships among the criteria that emerged in the study and of each sub‐criteria. Since developing a business strategy is a multiple‐criteria decision‐making (MCDM) problem, this study adopted the causal‐effect model of decision‐making trial and evaluation laboratory (DEMATEL) technique. The DEMATEL technique simplifies and visualizes the interrelationships among decision‐making criteria. The study identified four core criteria – benefits, opportunity, costs, and risks, as key influencers in the national museum business performance. Each key criteria was supported by a set of sub‐criteria which, when considered together, produced an influential network relations map. The results of this study provided Taiwan's national museum curators with an idea‐based understanding of how to create business and marketing strategies that could enhance exhibition features, experience activities, and facilities that could be linked to satisfaction of visitors’ desires and offer a potentials strategy for assessing likelihood of return visits.     

中国薯蓣属细胞分类的研究——染色体数与该属起源和演化

本文继续报道了薯蓣属(Dioscorea L.)块茎类5个组(sect．  Combilium Pr．et Burk.，Sect. Lasiophyton  Pr．  et  Burk.，  Sect.  Opsophyton  Uline，  Sect． Shannicorea  Pr.  et  Burk.，  Sect. Enantiophyllum Uline)23个种和变种的染色体数，并对一些分类群进行了讨论。它们都是基数为10的多倍体，是本属进化的类型。  根据染色体数的演化和二倍体种类的地理分布，我们推论我国横断山脉地区可能是薯蓣属的起源中心。     

Change and Continuity in the Singapore Literature-in-English Curriculum

This paper examines contestations over the value of Literature in the secondary school curriculum in the former British colony of Singapore and the way the Literature curriculum has been framed to understand the various issues surrounding the role of Literature education. Using Raymond Williams’ framework of dominant, residual and emergent ideologies, I show how the dominant perception of Literature study in Singapore as a decontextualised humanistic and aesthetic subject is influenced by its residual British colonial legacy. Significant official changes, fundamentally conservative, have been driven by the governing ideology of instrumental pragmatism and are tied to twin aims of economic well-being and national belonging. The conservative view of Literature education prevents the adoption of emergent views of Literature education as hybrid, multimodal and critical. A pragmatic re-evaluation of the aims of Literature education in the twenty-first century is required to regain renewed significance for the subject.     

An optofluidic volume refractometer using Fabry–Pérot resonator with tunable liquid microlenses

This letter reports the development of an optofluidic Fabry–Pérot (FP) resonator, which consists of a microcavity and a pair of liquid microlenses. The microcavity forms part of the microchannel to facilitate sample injection. The liquid microlenses are used for efficient light coupling from the optical fiber to the microcavity. The liquid microlens collimates the diverging light from the optical fiber into the FP cavity, which provides real-time tuning to obtain the highest possible finesse up to 18.79. In volume refractive index measurement, a sensitivity of 960 nm per refractive index unit (RIU) and a detection range of 0.043 RIU are achieved.     

Taiwanese Students in Malaysia and Interculturality: When National Identities Take Primacy over Individualities

Abstract Using a liquid approach, the authors analyze the intercultural discourse of Taiwanese students who had taken part in a short term exchange program with a Malaysian university. The four participants were graduating in Mandarin Chinese in their home institution and were following a Chinese program in multilingual Malaysia. Data were collected through focus groups held in Mandarin Chinese and focused on their experience in the host country. The authors analyze how participants talk about themselves, Malaysians, and their adaptation to the host country. The processes of essentialization and othering that occur and put in contrast the host and the home contexts are similar to those held in Asia-to-Europe mobility and very far from an “interculturality without culture” (Dervin, 2010). If we focus on the construction of discourses, this Asia-to-Asia mobility forces us to relativize the opposition of cultures as an explanation for difficulties encountered by mobile students.     

Online Cognitive Diagnostic Assessment with Ordered Multiple-Choice Items for Word Problems involving ‘Time’

Education and Information Technologies - Solving word problems involving 'Time' is an important skill but poor mastery of the skill among elementary students has often been reported in the...     

The understanding and development of cycling aerodynamics

In elite cycling the resistive force is dominated by aerodynamics. Be it on the roads or in the velodrome, the sport has many examples where aerodynamics has won and lost races. Since the invention of the bicycle, engineers have strived to improve performance, often by reducing aerodynamic drag. Over the last 50 years a number of authors have presented their efforts in journals, books and magazines. This review summarises the publications that show the continued development in the aerodynamics of cycling. The review concludes by examining the shortcomings of the current understanding and making suggestions for future research and development.