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.     

The Impact of a High Stakes Teacher Evaluation System: Educator Perspectives on Accountability

The use of student achievement data to evaluate an individual teacher's effectiveness has become a new focus in educational policy. This article focuses on the underresearched teacher perception of this new policy measure. Drawing on ethnographic research procedures, this article explores how first-grade teachers in one state navigated a new high-stakes teacher evaluation system. Although the results indicate that teachers have a desire for accountability, findings also show a variety of beliefs on the validity of teacher evaluation, as well as differing applications of scoring measures across school contexts.     

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。     

On not becoming ‘a mere empirical existence’: exploring ‘who’ and ‘what’ narratives in pre-service English teachers’ writing

Standards-based reforms of education favour narrow forms of teacher professional learning tied to generic standards and pre-determined, measurable outcomes. In high-stakes accountability-driven environments, in schools and initial teacher education programs, educators are rarely encouraged to inquire into their work and professional identities through narrative writing. This article describes and analyses an assessment task in a pre-service teacher education course wherein students explore dialogic forms of critical autobiographical writing as part of an ongoing process of examining and clarifying their views and values about English teaching. Drawing on Cavarero, we argue that the writing these preservice teachers do provides a space for them to negotiate ‘what’ and ‘who’ narratives as they journey to become English teachers. Their writing productively grapples with generic ‘what’ stories such as what standards documents attempt to tell about English teaching, and the ‘unrepeatable uniqueness’ of ‘who’ stories developed out of their individual cultural, educational and linguistic difference.     

A Qualitative Investigation of College Students' Facebook Usage and Romantic Relationships: Implications for College Counselors

The use of social media is a societal trend influencing the way that individuals communicate with and relate to one another. Moreover, Facebook use may facilitate or hinder individuals' relationship growth and development. The purpose of this article is to (a) review research examining Facebook usage and interpersonal relationships, (b) present qualitative insight into the Facebook experiences of college students (N = 16) from a large southeastern university, and (c) offer implications for college counselors.     

Encouraging IT students to get serious about assignment writing: evaluation of a Web-based initiative

Traditionally, students attending university have received support for their assignment writing within a face-to-face framework. Academic writing support delivered via the Internet needs to be rendered in very subject-specific terms for the resource to be perceived as valuable. This paper reports on a project involving writing support staff and a computer science subject leader to develop and evaluate a Web-based academic skills tutorial. The tutorial sought to provide online learning support for interpreting an information technology (IT) assignment topic, extracting information from sources, and integrating the material into a report with the support of online lexical tools. The evaluation sought to determine whether the students found the resource helpful, if improvements were still required, and what implications there were for integrating the resource with subject teaching. Students perceived most value in those sections of the resource that provided them with examples and models, and least in those that required them to engage in interactive activity.     

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.