Fibonacci index and stability number of graphs: a polyhedral study

The Fibonacci index of a graph is the number of its stable sets. This parameter is widely studied and has applications in chemical graph theory. In this paper, we establish tight upper bounds for the Fibonacci index in terms of the stability number and the order of general graphs and connected graphs. Turán graphs frequently appear in extremal graph theory. We show that Turán graphs and a connected variant of them are also extremal for these particular problems. We also make a polyhedral study by establishing all the optimal linear inequalities for the stability number and the Fibonacci index, inside the classes of general and connected graphs of order n.     

试论理工科大学的人文学科发展策略

理工科大学的人文学科缺失既是一种历史缺失 ,又是一种结构性缺失。其发展策略应为 :以超常规的思路组建综合性的人文社会科学研究基地 ,组建综合性的教师培训基地 ,制定激励性的制度和措施 ,引进和聚集高水平的人文学科研究和教学人才等     

Visualizing and managing value creation through integrated reporting practices: a dynamic resource-based perspective

The article builds on the current debate on how accounting tools can assist top management teams to manage their resources, while communicating a variety of data and information about value creation to their stakeholders. Within this debate, the study focuses on a recent tool for corporate reporting, the Integrated Reporting (〈IR〉), and investigates its utility to support the development of a holistic model for managing strategic resources to create value. To operationalize the 〈IR〉 according to this perspective, the article combines 〈IR〉 with the Dynamic Resource-Based View (DRBV) of the firm on the basis of their common idea that strategic resources are interconnected and have to be managed with the collaboration of all stakeholders in order to inform governance actions and create value with a holistic perspective. For the two case studies analyzed, the information provided by the two organizations’ 〈IR〉 is specifically organized and re-framed using “resource mapping”, which is a DRBV-based visual and analytical technique representing the causal relationships between resources and governance actions. In this way, we not only aim to re-organize and visualize existing information into a new form, but we also expect to describe and communicate the dominant logic in the business and the leverage points where the value creation process lies, supporting the usefulness of Integrated Reporting as a management and governance tool.

     

Effects of sleep inertia on cognitive performance following a 1-hour nap

Abstract

This study investigated the effects of a 1-h nap on subsequent performance in spatial memory (SM) and logical reasoning (LR) tasks. The objective was to evaluate the duration of the effects of sleep inertia (SI). The performance was measured in two independent groups of subjects. The 1-h nap took place at 00:00 h in group 1 and at 03:00 h in group 2. In each task, the experimental design comprised one no-nap condition in which subjects had no sleep before the night tests, and a nap condition that comprised the 1-h nap followed by the test sessions. To measure the duration of SI effects, the subjects were tested in two 30-min sessions and the data in each session were analysed in sub-units of time of 3 min each. In each task the results showed no effects on accuracy, and no circadian effects of napping were found. In each task, analyses of pooled data of the two groups showed that the performance in the 1-h nap condition exhibited significant reductions of speed immediately following awakening, when compared with no-nap, reflecting SI effects. In SM, the slowing lasted 24 min, and 27 min in LR. Practical implications of the results are discussed.     

International collaborative ventures between higher education institutions: a British–Russian case study

The starting point for our research is a model of developmental space designed by Coenders. Developmental space in this model is a social space arising from interaction between people. Coenders states that this developmental space is conditional for the probability of success for groups working on innovation. This model is relevant and useful because it is increasingly common for groups in organizations to work on innovation. Human Resource Development (HRD) professionals, involved in organizational development, often facilitate these groups as a process consultant. The model of Coenders is not complete yet, and for analysing and influencing the developmental space, the model is too complex. In a developmental research, we refine and adjust the model of the developmental space. The goal of our study is to develop a model of the developmental space as a starting point for groups and HRD professionals to analyse and influence that space.     

Forms of politicization in the French literary field

Using Pierre Bourdieu’s theory of “fields,” this article proposes a model of analysis of the forms of politicization in the literary field based on the French case. In France, during the first half of the twentieth century, the writer has embodied the figure of the “Intellectual.” The first claim is that the politicization of the French literary field resulted from three factors: the autonomy it gained in the nineteenth century, its lack of professional development, and the competition with the newly emerging professions. These factors, joined to the specific features of the literary activity, account for the writers’ most typical mode of politicization: prophesying. This analysis adapts the Weberian concepts of “charismatic power” and of “prophetism” to the intellectual field, in the way suggested by Pierre Bourdieu’s interpretation of Max Weber’s theory of religion. The second claim is that the forms of politicization of writers depend on the position they occupy in the literary field: the way of being a writer conditions the way one engages in the political sphere. Four figures of committed writers are distinguished: the “notabilities,” the “aesthetes,” the “avant-garde,” and the “writer-journalists.”     

Parent Involvement Practices in Child Protection: A Matter of Know-How and Attitude

Modern view of child protection services implies that to help young people, simply intervening on their behalf is not sufficient. It suggests that involving parents in the assistance process is essential in order to ensure that they are most likely to play their role as parents to their children in the fullest possible way. Although several articles have dealt with the issue of parent involvement, very few have attempted to document the practices used by practitioners to encourage such involvement. This article presents the findings of a study on child protection practices for involving parents in a child protection context. It is exploratory in nature, and uses a qualitative methodology. The study population is made up of 38 child protection service workers. An analysis of the practitioners’ discourse reveals that the behaviour and attitudes used by them to encourage parent involvement are very diverse. There also appear to be key moments in securing their involvement, that is, making contact, setting objectives and means of action, and applying the case plan. In addition to corroborating earlier studies on the issue of parent involvement, our findings indicate that the majority of the caseworkers interviewed practice an approach that aims to empower clients.Funding of this project was provided by le Fonds Richelieu de recherche sur l’enfance.Marie-Christine Saint-Jacques, Geneviève Lessard, and André Beaudoin are affiliated with School of Social Work, Laval University, Quebec, Canada. Sylvie Drapeau is affiliated with Department of Foundations and Practices in Education, Laval University, Quebec, Canada.     

企业价值评估观点评述

对资产评估界流行的多种企业价值评估的观点进行了评述 ,认为企业价值评估最值得推崇和发展的观点应是——企业价值是企业现有基础上的获利能力价值和潜在的获利机会价值之和。     

Outside of the corporate mainstream and excluded from the work community: A study of diversity,job satisfaction and well-being

Research over the past two decades indicates that exclusion from organizational information networks and from important decision-making processes is one of the most significant problems facing today's diverse workforce. Employees' sense of exclusion may play a critical role in explaining the connection between lack of opportunities experienced by employees who are different from the corporate 'main stream' and their job satisfaction and well-being. This study examines the relationship between diversity characteristics, sense of inclusion, fairness, stress and social support and the outcome variables of job satisfaction and well-being. A sample of 3400 employees of diverse racial and ethnic backgrounds in the high-tech industry in Southern California completed a self-report questionnaire. Findings support the hypotheses that women and members of racial/ethnic minorities are more likely to feel excluded, and that exclusion is linked to job dissatisfaction and lower sense of well-being. The study further explores the potential role of exclusion as a mediator variable. These findings have implications for future research on workforce diversity and for organizational diagnosis and interventions aimed at creating a more inclusive workplace culture. Investigácion durante los últimos veinte anos indica que exclusión de cadena información del organización y exclusión de decisións importantes es uno de los problemas mas significante en el diverso mundo de trabajo. El sentido de exclusión de los empleados puede estar criticó en la explicación del connexión entre la falta de opportunidades para los empleados que son differentes del corriente principal y su satisfacion con trabajo y su bienestar. Este investigación explora el relation entre característicos diversos, sentido de inclusión, justicia, esfuerzo, y assistencia social, y los variables resultados de satisfacion con trabajo y bienestar. Este prueba de 3400 empleados de ethnicidades y razas differentes de un industria tecnológico en el sur de California han completo un cuestionario de su mismo. Conclusiones dar soporte al hipótesis que es mas probable que mujeres y los minorías de raza y ethnicidad sientan exculido, y que exclusión tiene connexión con desagrado con el trabajo y mas pequeno sentido de bienestar. Este prueba averiguares el posición de exclusión como un variable mediador. Estos conclusions tienen implicaciónes para los investigaciónes en el futuro con diversidad en trabajadores y para diagnosis con los organizaciónes y intervenciónes que quieren crear una cultura mas inclusivo en el organización.     

增塑剂DOP制备条件

1.在不同反应温度、反应时间、催化剂用量、及异辛醇和苯酐配比下制备DOP.(DOP为邻苯二甲酸二(2乙基己基)酯的简称)2.对产品进行酸值、酯含量、加热减量以及红外分析,并将不同条件下的产品的产率、色泽进行对比,以寻求最佳反应条件.