Graphical Analysis of Social Group Dynamics

Identifying communities in social networks becomes an increasingly important research problem. Several methods for identifying such groups have been developed, however, qualitative analysis (taking into account the scale of the problem) still poses serious problems. This paper describes a tool for facilitating such an analysis, allowing to visualize the dynamics and supporting localization of different events (such as creation or merging of groups). In the final part of the paper, the experimental results performed using the benchmark data (Enron emails) provide an insight into usefulness of the proposed tool.Comment: Fourth International Conference on Computational Aspects of Social Networks, CASoN 2012, Sao Carlos, Brazil, November 21-23, 2012, pp. 41-46; IEEE Computer Society, 201

Predicting Community Evolution in Social Networks

Nowadays, sustained development of different social media can be observed worldwide. One of the relevant research domains intensively explored recently is analysis of social communities existing in social media as well as prediction of their future evolution taking into account collected historical evolution chains. These evolution chains proposed in the paper contain group states in the previous time frames and its historical transitions that were identified using one out of two methods: Stable Group Changes Identification (SGCI) and Group Evolution Discovery (GED). Based on the observed evolution chains of various length, structural network features are extracted, validated and selected as well as used to learn classification models. The experimental studies were performed on three real datasets with different profile: DBLP, Facebook and Polish blogosphere. The process of group prediction was analysed with respect to different classifiers as well as various descriptive feature sets extracted from evolution chains of different length. The results revealed that, in general, the longer evolution chains the better predictive abilities of the classification models. However, chains of length 3 to 7 enabled the GED-based method to almost reach its maximum possible prediction quality. For SGCI, this value was at the level of 3 to 5 last periods.Comment: Entropy 2015, 17, 1-x manuscripts; doi:10.3390/e170x000x 46 page

Techniques for calculating software product metrics threshold values: A systematic mapping study

Several aspects of software product quality can be assessed and measured using product metrics. Without software metric threshold values, it is difficult to evaluate different aspects of quality. To this end, the interest in research studies that focus on identifying and deriving threshold values is growing, given the advantage of applying software metric threshold values to evaluate various software projects during their software development life cycle phases. The aim of this paper is to systematically investigate research on software metric threshold calculation techniques. In this study, electronic databases were systematically searched for relevant papers; 45 publications were selected based on inclusion/exclusion criteria, and research questions were answered. The results demonstrate the following important characteristics of studies: (a) both empirical and theoretical studies were conducted, a majority of which depends on empirical analysis; (b) the majority of papers apply statistical techniques to derive object-oriented metrics threshold values; (c) Chidamber and Kemerer (CK) metrics were studied in most of the papers, and are widely used to assess the quality of software systems; and (d) there is a considerable number of studies that have not validated metric threshold values in terms of quality attributes. From both the academic and practitioner points of view, the results of this review present a catalog and body of knowledge on metric threshold calculation techniques. The results set new research directions, such as conducting mixed studies on statistical and quality-related studies, studying an extensive number of metrics and studying interactions among metrics, studying more quality attributes, and considering multivariate threshold derivation. 2021 by the authors. Licensee MDPI, Basel, Switzerland.Funding: Authors thanks to the Molde University College-Specialized Univ. in Logistics, Norway for the support of Open access fund.Scopus2-s2.0-8512089773

Modelling, Dimensioning and Optimization of 5G Communication Networks, Resources and Services

This reprint aims to collect state-of-the-art research contributions that address challenges in the emerging 5G networks design, dimensioning and optimization. Designing, dimensioning and optimization of communication networks resources and services have been an inseparable part of telecom network development. The latter must convey a large volume of traffic, providing service to traffic streams with highly differentiated requirements in terms of bit-rate and service time, required quality of service and quality of experience parameters. Such a communication infrastructure presents many important challenges, such as the study of necessary multi-layer cooperation, new protocols, performance evaluation of different network parts, low layer network design, network management and security issues, and new technologies in general, which will be discussed in this book

Fantastic Extrapolations: An Exploratory Bibliometric Investigation into the Historic Development of English-Language Fantasy and Science Fiction Scholarship Through Fifty Years of Extrapolation

There are relatively few bibliometric or citation analysis historical studies of the scholarly literature of arts or humanities fields as compared with the science, technical, medical, or social science disciplines; many studies focus on the journal literature and use the formal works cited reference lists as captured by citation indexes as the basis for their conclusions. This study looks at aspects of the scholarship of the literary and media-based popular culture field of fantasy and science fiction (F&SF; aka: fantastic, fantastika) studies through the first 50 years of Extrapolation (December 1959-Fall 2009), the oldest continuing scholarly journal in the field, in three areas: -- History and editorial purpose, types of contributions, and recognition by general-, literature-, and F&SF-focused indexing services; -- Analyses of the 785 scholars published in the journal, by gender, co-authorship, affiliation and status (geographical, institutional, ranks, disciplines, awards), their referencing practices, and identification of the 55 most frequently published scholars; and, -- Analyses of more than 15,000 references given to 2,035 primary (creative) authors and more than 8,000 individual creative works, including collaboratively authored media, religious, and other titles, by gender and national affiliation, and by types of works. publication sources, language, and ages/dates, as found in 937 articles by 656 different authors. The primary references analyzed come not only from the traditional bibliometric locations in Works Cited lists, but also from Notes, and the references found in the rarely if ever studied informal locations (implicit citations), primarily within the text of the articles. The most frequently referenced primary authors and works are identified: 118 authors (20-563 references), beginning with Ursula K. Le Guin (563 references; 105 different works), Robert A. Heinlein (519; 90), and H. G. Wells (328; 52); 182 primary (creative) works (10-191 references), starting with Star Trek: The Original Series (191 references), Star Trek: The Next Generation (106), George Orwell’s Nineteen Eighty-Four (77), Wells’ The Time Machine (73), and Mary Shelley’s Frankenstein (71). This study should interest historians of arts and humanities scholarship, F&SF scholars, and librarians and archivists responsible for collection development and collections management in the areas of literature and media

Southern Adventist University Undergraduate Catalog 2011-2012

Southern Adventist University\u27s undergraduate catalog for the academic year 2011-2012.https://knowledge.e.southern.edu/undergrad_catalog/1063/thumbnail.jp

El Libro de los libros: 1160 Libros profesionales de descarga gratuita y legal para Bibliotecarios y Documentalistas

[ES]Compilación de 1060 libros de Información y Documentación con enlace al texto completo de la obra, resumen y referencia bibliográfica, de interés para profesionales de las bibliotecas y servicios de información[EN] Compilation books 1060 on Information and Documentation with link to the full text of the work, abstract and bibliographic references of interest to library professionals and information service

IFPOC Symposium:Discovering antecedents and consequences of complex change recipients' reactions to organizational change.

IFPOC symposium: Discovering antecedents and consequences of complex change recipients' reactions to organizational change Chairs: Maria Vakola (Athens University of Economics and Business) & Karen Van Dam (Open University) Discussant: Mel Fugate (American University, Washington, D.C) State of the art Organisations are required to continuously change and develop but there is a high failure rate associated with change implementation success. In the past two decades, change researchers have started to investigate change recipients' reactions to change recognizing the crucial role of these reactions for successful change. This symposium aims at identifying and discussing the complex processes that underlie the relationships among antecedents, reactions and outcomes associated with organizational change. New perspective / contributions This symposium consists of five studies that extend our knowledge in the field by (i) providing an analysis of change recipients' reactions going beyond the dichotomous approaches (acceptance or resistance) (ii) revealing understudied antecedents-reactions and reactions-consequences patterns and relationships (iii) shedding light on the role of contextual factors i.e team climate and individual factors i.e emotion regulation on the adaptation to change. This symposium is based on a combination of both quantitative (i.e diary, survey) and qualitative (i.e interviews) research methodology. Research / practical implications This symposium aims to increase our understanding of the complex processes associated with change recipients' reactions to change. Discovering how these reactions are created and what are their results may reveal important contingencies that can explain how positive organizational outcomes during times of change can be stimulated which is beneficial for both researchers and practitioners