不具传递性偏好的效用函数表示

主要是对参与人的被选方案集作些规定以及不具传递性的偏好作一些限制,得到了一些效用函数表示结果,统一和推广了许多已知结果。     

天然脱落酸在月季鲜切花保鲜方面的应用

以月季＂卡罗拉＂为试材,采用不同浓度的脱落酸单剂作为保鲜液,分别对月季＂卡罗拉＂切花花枝进行保鲜处理,对瓶插寿命、花径改变量、花枝鲜重、叶绿素及花青素等研究其相关形态指标变化,结果表明：天然脱落酸（S-诱抗素）在月季鲜切花保鲜方面的较佳单剂浓度为：1.0 mg/L与2.0 mg/L.     

格序群的可迁性

利用格序置换群是研究格序群的重要工具之一,本文论述了在格序置换群里起重要作用的概念:n可迁性。并论述了迷向子群在其中的作用。     

传递闭包的Matlab实现

在Warshall算法基础上,基于Matlab软件,编写出求传递闭包的计算程序,并得到了新添加的序偶矩阵。     

Transformation and Closure for Anatomical Donor Families that Meet Medical Students

The University of Oklahoma College of Medicine has conducted an annual Anatomical Donor Luncheon where families of the anatomical donors met anatomy dissection groups of medical students. The luncheon presented an opportunity for donor family members to share the life story of their loved one with the medical students prior to the start of the anatomy course. This study was designed to understand the impact of the Anatomical Donor Luncheon on families of the donors. Seven families in two different focus groups were included to explore the reactions and attitudes of the donor families to meeting the medical students. Conversations were digitally recorded and transcribed. Qualitative analysis of textual data were coded by three investigators using the Constant Comparative Method. To provide evidence of validity, a form of member checking was utilized. For further triangulation, an analyst not involved in conducting the focus groups or analyzing the data, re-coded all data. This analyst used categories and themes identified by the original analysts, ensuring validity of the themes and any negative cases (data not supporting or contradictory of the established categories and themes). One meta-theme and three sub-themes were identified. The meta-theme was Donor Family Participants Experience Transformation and Closure, and sub-themes were Motivators for Participation, Optimal Venue Factors, and Optimal Medical Student–Anatomical Donor Family Interactions. Study findings indicated the Anatomical Donor Luncheon facilitated closure on the death of their loved one, and transformed their apprehension about the luncheon and body donation into an attitude of gratitude and appreciation.     

几类补语指向主语动结式的句法形式

补语指向主语的动结式可以分为三种,分别以“唱哭”、“听懂”、“吃腻”为代表。该三类动结式的句法表现不同,深层结构也各不相同。三者的差异可以通过“优先满足V2论元投射原则”得到解释。     

图的补图谱半径和泛圈性

设G=(V,E)是一个n阶简单图,若对于每一个k(3燮k燮n),G都含有长度为k的圈Ck,则称G为泛圈图。利用图的闭包理论研究图的补图谱半径的界,讨论了泛圈图存在的一个谱条件。     

简析日语自动词和他动词的误用

文章从日语自、他动词的特征分析入手,并举例分析了日语自、他动词的几种误用,以期帮助日语学习者在一定程度上更为清晰地区分自、他动词,构建相对完整的日语语法体系。     

No room at the top? The glass wall for professional services managers in pre-1992 English universities

Pre-1992 English universities are changing the way they appoint their deputy and pro-vice-chancellors (PVCs). Traditionally, PVC posts were filled by internal secondment from within the professoriate, but these days an increasing number are appointed by means of external open competition involving advertisement and/or executive search. So has this ‘opening up’ of PVC positions created new career progression opportunities for professional services managers? Findings from a census, online survey and interviews with a range of senior university managers suggest not. Despite the PVC role becoming more managerial, those getting the jobs remain overwhelmingly career academics. Professional services managers confront a glass wall, excluded from consideration by a non-negotiable requirement for academic credibility. Aware they have little chance of getting a PVC job, they are unlikely to apply. The continued monopolisation of PVC posts by academic managers represents a form of social closure that serves to maintain their elite status.     

How does collaboration affect researchers’ positions in co-authorship networks?

Collaboration usually has a positive effect on researchers’ productivity: researchers have become increasingly collaborative, according to recent studies. Numerous studies have focused on enhancing research collaboration by recommendation technology and measuring the influence of researchers. However, few studies have investigated the effect of collaboration on the position of a researcher in the research social network. In this paper, we explore the relationships between collaboration and influence by social analytical methods, which are pertinent to analyzing the network structure and individual traits. We evaluate three aspects of the researchers’ influence: friendship paradox validation, social circle, and structure of a researcher's ego network. Furthermore, the ”six degrees of Bacon number” theory, generalized friendship paradox, and triadic closure theory are introduced to support our analysis. Experimental results show that collaboration can help researchers increase their influence to some extent.