Littérature scientifique sur le sujet « BG. Information dissemination and diffusion »
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Articles de revues sur le sujet "BG. Information dissemination and diffusion"
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Shukla, Dhirendra Mani, et M. Akbar. « Diffusion of internationalization in business group networks : evidence from India ». Management Decision 56, no 2 (12 février 2018) : 406–20. http://dx.doi.org/10.1108/md-10-2016-0741.
Texte intégralRésumé :
Purpose The purpose of this paper is to suggest that business group (BG) networks act as conduits for diffusion of information and resources pertaining to internationalization. It considers three types of BG networks arising from three different types of ties- director interlock, direct equity, and indirect equity. In particular, it examines the effects of cohesiveness of these BG networks on the diffusion of internationalization within a BG. Design/methodology/approach Drawing on social network perspective, it is hypothesized that, for each type of network, cohesiveness enhances within-BG similarity of the extent of internationalization. An empirical investigation is conducted on a sample of 55 Indian BGs for the period 2009-2013. Findings Results support all the three hypotheses, suggesting that higher level of cohesiveness leads to higher level of within-BG similarity of the extent of internationalization, for all three network types. Originality/value Findings of this study contribute to the BG literature by examining the effects of BG network cohesiveness on the diffusion of internationalization within a BG, for three types of BG networks.
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McEwan, Bree, Christopher J. Carpenter et Jill E. Hopke. « Mediated Skewed Diffusion of Issues Information : A Theory ». Social Media + Society 4, no 3 (juillet 2018) : 205630511880031. http://dx.doi.org/10.1177/2056305118800319.
Texte intégralRésumé :
The modern media ecology has changed drastically over the last decade yet scholarly theoretical perspectives lag behind lay theories regarding news diffusion making it difficult to fully articulate and understand the processes driving dissemination of information and persuasion across networks and media contexts. The proposed theoretical framework takes into account extant research on the multiple mechanisms, specifically, cognitive ego involvement, the media environment, and interpersonal processes that operate in concert to influence the way information about societal issues is diffused through digital communication channels. The theoretical framework of mediated skewed diffusion of issues information provides 11 testable propositions. These are put forth to provide a foundation and encourage future research on information dissemination, online persuasion, and position polarization.
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Cheng, Shin-Ming, Vasileios Karyotis, Pin-Yu Chen, Kwang-Cheng Chen et Symeon Papavassiliou. « Diffusion Models for Information Dissemination Dynamics in Wireless Complex Communication Networks ». Journal of Complex Systems 2013 (4 septembre 2013) : 1–13. http://dx.doi.org/10.1155/2013/972352.
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Information dissemination has become one of the most important services of communication networks. Modeling the diffusion of information through such networks is crucial for our modern information societies. In this work, novel models, segregating between useful and malicious types of information, are introduced, in order to better study Information Dissemination Dynamics (IDD) in wireless complex communication networks, and eventually allow taking into account special network features in IDD. According to the proposed models, and inspired from epidemiology, we investigate the IDD in various complex network types through the use of the Susceptible-Infected (SI) paradigm for useful information dissemination and the Susceptible-Infected-Susceptible (SIS) paradigm for malicious information spreading. We provide analysis and simulation results for both types of diffused information, in order to identify performance and robustness potentials for each dissemination process with respect to the characteristics of the underlying complex networking infrastructures. We demonstrate that the proposed approach can generically characterize IDD in wireless complex networks and reveal salient features of dissemination dynamics in each network type, which could eventually aid in the design of more advanced, robust, and efficient networks and services.
4
Guo, Rongchun. « News Hotspot Event Diffusion Mechanism Based on Complex Network ». Mathematical Problems in Engineering 2022 (28 mai 2022) : 1–9. http://dx.doi.org/10.1155/2022/1455324.
Texte intégralRésumé :
The wide range of social hot news events on the Internet has made the Internet have a great impact on the public. However, there are few studies on Internet information. In order to improve the efficiency of user network information dissemination of Internet information based on complex network theory and model simulation, this paper makes a more in-depth study on information dissemination on the Internet, constructs a complex network of Internet information dissemination, and analyzes the static topology and dynamic evolution process of the network. Using the attention relationship between Internet users, the Internet information dissemination network, degree, and path were used to select multiple indicators. The static topology of the network is analyzed by using the complex network theory. The study found that the complex network of Internet information is different from other complex networks. The influencing factors of network dynamic evolution are studied from three aspects: overall structure, local structure, and time constraints. The evolution trend of different forms and overall network nodes in the evolution process was explored, and the network dynamic evolution process model was constructed. Practice shows that the model can better describe the evolution process of network information dissemination in complex networks. The degree values of the two networks are positively correlated with the corresponding average clustering coefficients, and the networks have a significant hierarchy. The correlation between news hot events and network nodes is not as good as users’ attention to the network.
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Vavryk, Petro. « One approach to formalizing the process of information dissemination based on diffusion-limited aggregation ». Bulletin of Taras Shevchenko National University of Kyiv. Series : Physics and Mathematics, no 1 (2022) : 61–66. http://dx.doi.org/10.17721/1812-5409.2022/1.8.
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This article examines one of the approaches to the formalization of information dissemination processes based on the diffusion-limited aggregation model, using elements of cellular automata and their analogs. The model describes the dynamics of the information dissemination process without the influence of the mass media by taking into account the facts of information exchange that occurs during communication between participants of an arbitrary target audience. It is believed that the process is characterized by the property of self-similarity. An approach is proposed that makes it possible to study the dynamics of information dissemination processes, taking into account the attitude of the group members to each other and the attitude of the participants to the input information. As a result, an assessment of the effectiveness of the information dissemination process was obtained, which allows drawing conclusions regarding the success of information promotion measures. To demonstrate the processes of information dissemination modeled on the basis of the approach, the results of numerical experiments are presented, in which the implementation of the information exchange procedure for each person is limited to three members of the target group.
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Han, Shao Chun, Yun Liu, Hui Ling Chen et Zhen Jiang Zhang. « Influence Model of User Behavior Characteristics on Information Dissemination ». International Journal of Computers Communications & ; Control 11, no 2 (26 janvier 2016) : 209. http://dx.doi.org/10.15837/ijccc.2016.2.2441.
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Quantitative analysis on human behavior, especially mining and modeling temporal and spatial regularities, is a common focus of statistical physics and complexity sciences. The in-depth understanding of human behavior helps in explaining many complex socioeconomic phenomena, and in finding applications in public opinion monitoring, disease control, transportation system design, calling center services, information recommendation. In this paper,we study the impact of human activity patterns on information diffusion. Using SIR propagation model and empirical data, conduct quantitative research on the impact of user behavior on information dissemination. It is found that when the exponent is small, user behavioral characteristics have features of many new dissemination nodes, fast information dissemination, but information continued propagation time is short, with limited influence; when the exponent is big, there are fewer new dissemination nodes, but will expand the scope of information dissemination and extend information dissemination duration; it is also found that for group behaviors, the power-law characteristic a greater impact on the speed of information dissemination than individual behaviors. This study provides a reference to better understand influence of social networking user behavior characteristics on information dissemination and kinetic effect.
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Ivokhin, Evgeniy V., et Yuriy A. Naumenko. « On Formalization of Information Dissemination Processes Based on Hybrid Diffusion Models ». Journal of Automation and Information Sciences 50, no 7 (2018) : 79–86. http://dx.doi.org/10.1615/jautomatinfscien.v50.i7.70.
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Knight, David W., Arren Mendezona Allegretti et Jerry J. Vaske. « Information dissemination-diffusion and marine protected area approval in the Philippines ». Ocean & ; Coastal Management 113 (août 2015) : 38–46. http://dx.doi.org/10.1016/j.ocecoaman.2015.05.016.
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Yu, Jianye, Junjie Lv, Yuanzhuo Wang et Jingyuan Li. « Mechanism analysis of competitive information asynchronous dissemination on social networks ». International Journal of Modern Physics C 30, no 11 (novembre 2019) : 1950094. http://dx.doi.org/10.1142/s0129183119500943.
Texte intégralRésumé :
Information dissemination groups, especially those disseminating the same kind of information such as advertising, product promotion, etc., compete with each other when their information spread on social networks. Most of the existing methods analyze the dissemination mechanism mainly upon the information itself without considering human characteristics, e.g. relation networks, cooperation/defection, etc. In this paper, we introduce a framework of social evolutionary game (SEG) to investigate the influence of human behaviors in competitive information dissemination. Coordination game is applied to represent human behaviors in the competition of asynchronous information diffusion. We perform a series of simulations through a specific game model to analyze the mechanism and factors of information diffusion, and show that when the benefits of competitive information is around 1.2 times of the original one, it can compensate the loss of reputation caused by the change of strategy. Furthermore, through experiments on a dataset of two films on Sina Weibo, we described the mechanism of competition evolution over real data of social network, and validated the effectiveness of our model.
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Yan, Jiawen, Yuantao You, Yu Wang et Dongfang Sheng. « Understanding the Complexity of Business Information Dissemination in Social Media : A Meta-Analysis of Empirical Evidence from China ». Complexity 2021 (28 juin 2021) : 1–13. http://dx.doi.org/10.1155/2021/7647718.
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With the development of social networks, the complexity of the factors affecting the users’ information dissemination is increasing and the complexity of online social networks and influencing factors of individual behaviors and attitudes make the development of online public opinion present a dynamic, complex, and multifactor evolution. Analyzing the influencing factors of public opinion dissemination is conducive to optimize company management and information diffusion management. However, there has been no comprehensive analysis of the complex factors that influence the dissemination of information; this study focused on synthesizing 20 empirical studies on the influencing factors of China public opinion dissemination from the perspective of the user, and a meta-analysis was conducted. We establish the influencing factors of users’ information adoption model from three aspects of information source reliability, perceived information quality, and the heat of public opinion events based on elaboration likelihood model. The results indicated that the main influencing factors of public opinion communication are authority, reliability, quality of information form, quality of information editing, quality of information utility, and event attendance preference. Among the factors, authority and quality of information editing have more significant impacts on users’ information adoption behavior in the dissemination of public opinion. In addition, whether the type of event was a public emergency had a moderating effect. The results are helpful to explore the universality of the influencing factors so as to help related regulators better build a multiangle supervision mechanism and conduct early warning of information diffusion.
Thèses sur le sujet "BG. Information dissemination and diffusion"
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Jacobs, Neil. « Scholarly Communication, the Information Chain and Technology : Analyses and Reflexions ». Thesis, Loughborough University, 2001. http://eprints.rclis.org/6802/1/thesis.pdf.
Texte intégralRésumé :
It is no longer easy to adopt deterministic explanations of scholarly communication, technology or the information chain. Complex and reflexive relations have built up between the substantive and methodological literatures relevant to these topics. This thesis aims to explore these relations with reference to two sets of interviews, one with academic researchers and the other with information professionals. These interviews were conducted in 1998-9 during the FIDDO Project, a part of the UK Joint Information Systems Committee ‘Electronic Libraries Programme’.
Two major theoretical perspectives are employed to support two analytic methodologies. The first is social constructivism, which is represented methodologically in the thesis by discourse analysis. The second is actor-network theory, which is represented methodologically by co-word analysis. Both of these approaches are engaged in questions of relativism and realism in social explanation.
The implementation of each of the methodologies involves innovative moves. The discourse analysis is focused on personal deixis (self-reference) located by pronoun-use, and on interest management. The co-word analysis is adapted from a scientometric technique and supplemented by the use of categorical definitions of the three topics. Each methodology is employed to analyse both sets of interviews. The four resulting sets of findings are presented in terms of the boundaries apparent between the three topical concepts.
The boundaries between scholarly communication, technology and the information chain are found to vary, for example according to the identities of the interviewees responsible for the data. They also vary according to the methodology employed. Discourse analysis of interviews with information professionals suggests that the idea of technology is deployed as a dual repertoire, consisting of empowerment and automation, and that the pattern of this deployment is one constituent of the contested boundaries between the three topics. Co-word analysis of the same interviews suggests that an important focus of the boundaries is around the idea of electronic journals. Discourse analysis of interviews with academic researchers also reveals use of the dual technology repertoire, but in addition suggests that the category of formal scholarly communication acts to legitimate the interests of researchers. Co-word analysis of the same interviews suggests that a number of models of document access were in play, including those based on the library, on paper and on documents. The implications of these substantive analyses include that studies based on ‘user needs’ or the ‘impact of technology’ could benefit from an analysis of how such topics are constructed in particular accounts.
Finally, the question is addressed as to the extent that the results of the discourse and the co-word analyses (of the same data) are compatible so that they can be meaningfully synthesised. That is, do the two approaches give rise to outcomes that have similar epistemological status? The question is answered ‘empirically’ with reference to the issue of reflexivity as it is configured in the two approaches, and it is confirmed that the two types of outcome are not compatible due to profound differences in the positions adopted by their respective informing theories. The methodological implications of this include that those engaged in relativist research practice need to be aware the ways in which epistemological and reflexive issues are relevant to their actions.
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Cubells, Puertes María José. « La classificació de la documentació parlamentària de Les Corts Valencianes : la funció de control al Consell ». Thesis, Universitat de València, 2008. http://eprints.rclis.org/14243/1/1_tesi.pdf.
Texte intégralRésumé :
The aim of this thesis is to develop a framework for the classification of documents, as a basic tool for the records management system of the Valencian Parliament, with a view to facilitate the administrative management, the decision making and the retrieval of information.The methodology employed understands two stages: a review of the history of the Institution, its policies, procedure and function and, secondly, an actualised bibliographical review about the doctrine relative to the parliamentary control of government, and archival theories about document classification.The result is a functional table for document classification which is homogenous for the entire institution and allows adequate control, protection and records management, the standardization and simplification of procedure and the optimal exploitation of information from the Chamber.In conclusion, the system designed has been seen to be valid for the institution, achieving the expected goals in affording access to all users, including managers, politicians and researchers
3
Pampel, Heinz. « Universitätsverlage im Spannungsfeld zwischen Wissenschaft und Literaturversorgung. Eine kritische Bestandsaufnahme ». Thesis, Fachhochschulverlag Frankfurt am Main. Zugl. : Hochschule der Medien, Stuttgart, Diplomarbeit, 2006, 2007. http://eprints.rclis.org/9590/1/pampel.pdf.
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Departing from the serials crisis, this paper seeks to point out the areas of conflict, which are dominated by three principal agents: the scientific community, publishing
houses and libraries. In order to facilitate interaction between these agents the open access movement has been formed, which receives considerable support from the librarianship. Abutted to the Anglo-American university presses, it has been postulated in the scientific community that German universities engage in publishing activities too. The focal point of this work is - apart from an assessment of the current situation and an overview of the Anglo-American university presses - a critical account of the German university press. On the basis of qualitative interviews different publishing houses are critically assessed in terms of their services offered. In a short excursus this paper describes subject-related publishing activities in the context of the open access movement. In conclusion this paper will expound the problems of German university presses – and formulate an outlook as to what may be the future course of the industry.
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Costa, Sely Maria de Souza. « The impact of computer usage on scholarly communication amongst academic social scientists ». Thesis, reponame:Repositório Institucional da UnB, 1999. http://eprints.rclis.org/11724/1/tese_sely_completa.pdf.
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The study aims to see whether there are differences in the nature and patterns of computer usage for communicating research between disciplines in the social sciences in Brazil and, if so, whether they can be related to factors which can affect the process of communication. The theory embedded in the research model states that pressures
that accompany the introduction of information technologies into a university environment are significant factors in the use of such technologies. These pressures
produce differences in the communication process itself. Furthermore, there may also be a relationship between individual factors and the use of IT for communication.
The research data were collected via a survey using two instruments. Firstly, mailed questionnaires were sent to 760 academic researchers in sociology and economics in
Brazil, working in post-graduate programmes. A response rate of 64.1 percent was achieved. Secondly, 36 interviews were carried out with a sample of the most productive researchers in the two subjects studied. The interview sample included both respondents and non-respondents to the questionnaire. A small sample of 11 British academic researchers was included in the interview survey, in order to allow comparisons and see whether Brazilian academics lag behind IT front-runners. Data collected revealed that there is an impact of computer usage on the scholarly
communication process, especially in terms of informal communication. Such an impact can be related to changes in the social interactions that underlie knowledge creation among researchers, and also relates to differences in patterns and processes of computer usage between the chosen disciplines. Formal communication has experienced a gradually growing impact by electronic media on the well-established print environment, with the likely co-existence of the two media for some time to come. The results obtained showed that Brazilian researchers do not lag behind the British ones. Not many differences, but most similarities were found between economists and sociologists in both Brazil and the UK.
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Guallar, Javier. « Las hemerotecas de la prensa digital. Análisis de diarios españoles ». Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/96817.
Texte intégralRésumé :
La tesis presenta un modelo o sistema para el análisis y la evaluación de las hemerotecas de la prensa digital, que se aplica a una muestra de diarios españoles entre 2007 y 2010 y se enmarca en una propuesta de clasificación de fuentes de información sobre prensa digital.
La clasificación de las principales fuentes de información sobre prensa digital sigue como criterio fundamental para establecer la tipología de productos la función principal que realizan para el usuario, lo que lleva a establecer cuatro grandes ámbitos: acceso a cabeceras de prensa, búsqueda de información, seguimiento de información y agregación de contenidos. De cada una de estas clases, se describen y analizan distintas subtipologías: directorios, hemerotecas históricas, hemerotecas digitales de medios, bases de datos de prensa, seguimiento de prensa, seguimiento online, seguimiento en redes sociales, agregadores manuales, agregadores automatizados y agregadores sociales. Se muestran para cada tipología ejemplos significativos de las áreas lingüísticas inglesa y española.
El sistema de análisis de hemerotecas digitales parte de una amplia revisión bibliográfica de trabajos sobre evaluación de recursos web y bases de datos web, y de trabajos sobre análisis y evaluación de hemerotecas de diarios digitales. Es un procedimiento evaluativo de tipo heurístico basado en 27 indicadores articulados en cuatro grandes secciones: aspectos generales, contenidos, sistema de consulta y presentación de resultados. Se expone para cada indicador: definición, explicación y uso de la puntuación. Los indicadores son:
A.1. Denominación
A.2. Ubicación del acceso a la hemeroteca
A.3. Información sobre la hemeroteca
A.4. Coste
A.5. Productos documentales
B.1. Colecciones disponibles
B.2. Formatos disponibles
B.3. Cobertura temporal
C.1. Tipos de consulta por interrogación (palabras clave)
C.2. Lenguaje de consulta
C.3. Visualización de los índices
C.4. Ajuste de relevancia
C.5. Acotación temporal
C.6. Acotación en colecciones
C.7. Acotación en formatos
C.8. Acotación por campos del registro
C.9. Reutilización de búsquedas
C.10. Consulta de tesauros u otros vocabularios controlados
C.11. Acceso por navegación cronológica (browsing)
C.12. Ayudas
D.1. Gestión de las listas de resultados
D.2. Campos visualizados del registro del documento
D.3. Agrupación de resultados por categorías
D.4. Identificación de los términos de búsqueda en el documento
D.5. Formatos de visualización de un mismo documento.
D.6. Gestión de los documentos recuperados
D.7. Presentación de documentos relacionados
Con este modelo, se analizan las hemerotecas digitales de los diarios españoles de mayor audiencia y difusión. Es un estudio longitudinal efectuado entre los años 2007 y 2010. Se presentan con detalle los resultados del análisis realizado en 2010, y se relacionan con los obtenidos anteriormente en 2007. Se señalan los aspectos mejores y peores de las hemerotecas de prensa digital, se establece un ranking de diarios en el que ocupan las primeras posiciones El mundo, Abc, El país y La vanguardia, y se destacan finalmente cinco grandes tendencias observadas:
-ampliación del fondo temporal en línea;
-hemerotecas gratuitas versus hemerotecas de pago;
-simplificación (y empobrecimiento) de la búsqueda;
-filtros en la presentación de resultados;
-productos documentales en la sección Hemeroteca.This study presents a system for the analysis and evaluation of digital press archives, analyses the digital press archives of a sample of Spanish newspapers and presents a proposal to classify and analyze the main sources that provide access to online press. The system is a kind of heuristic evaluation procedure based on 27 indicators articulated in four main sections: general features, contents, the query system, and presentation of results. For each indicator is explained: definition, explanation and use of punctuation. With this method, it analyses the digital press archives of the Spanish newspapers with the largest digital circulations between 2007 and 2010. The study points out the best and worst aspects of the digital press archives, establishing a ranking of newspapers in which El Mundo, Abc, El País and La Vanguardia occupy the top positions, and finally shows five major trends: extension of the temporary fund online, free archives versus payment archives, simplification (and depletion) of the query, filters in the presentation of results and documentary products in the archive section.
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Guallar, Javier. « Curación de contenidos en el periodismo digital : conceptualización y propuesta de un sistema para la evaluación de la curación en medios de comunicación digitales ». Doctoral thesis, Universitat Pompeu Fabra, 2021. http://hdl.handle.net/10803/672646.
Texte intégralRésumé :
El objetivo de esta investigación es estudiar la curación de contenidos en el ámbito del periodismo, desarrollar un sistema de análisis para evaluar su uso y analizar su implementación en medios de comunicación digitales. En relación con ello: a) se propone una definición del concepto de curación de contenidos en periodismo; b) se estudia el alcance del concepto de curación periodística, y se relaciona con el concepto cercano de documentación periodística; c) se sitúa la investigación sobre curación periodística en el contexto más general de la investigación sobre curación; d) se presenta por primera vez en la literatura un sistema para la evaluación de la curación en medios de comunicación digitales; e) se prueba y valida esta nueva herramienta de evaluación con una muestra de productos periodísticos, en concreto newsletters, en el primer estudio sistemático realizado sobre curación en medios de un país; f) se establecen las características principales de los productos periodísticos basados en curación; y g) se identifican buenas prácticas de curación periodística.This research’s goal is to study content curation in the field of journalism, develop an analysis system to evaluate its use and analyse its implementation in digital media. In relation to this: a) a definition of the concept of content curation in journalism is proposed; b) the scope of the concept of journalistic curation is studied, and it is related to the close concept of journalistic documentation; c) research on journalistic curation is situated in the more general context of research on curation; d) a system for evaluating curation in digital media is presented for the first time in the literature; e) this new evaluation tool is tested and validated with a sample of journalistic products, specifically newsletters, in the first systematic study carried out on curation in the media of a country; f) the main characteristics of journalistic products based on curation are established; and g) good journalistic curation practices are identified.
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Agarwal, Rachit. « Towards enhancing information dissemination in wireless networks ». Thesis, Evry, Institut national des télécommunications, 2013. http://www.theses.fr/2013TELE0020/document.
Texte intégralRésumé :
Dans les systèmes d'alertes publiques, l’étude de la diffusion des informations dans le réseau est essentielle. Les systèmes de diffusion des messages d'alertes doivent atteindre beaucoup de nœuds en peu de temps. Dans les réseaux de communication basés sur les interactions “device to device”, on s'est récemment beaucoup intéressé à la diffusion des informations et le besoin d'auto-organisation a été mis en évidence. L'auto-organisation conduit à des comportements locaux et des interactions qui ont un effet sur le réseau global et présentent un avantage de scalabilité. Ces réseaux auto-organisés peuvent être autonomes et utiliser peu d'espace mémoire. On peut développer des caractères auto-organisés dans les réseaux de communication en utilisant des idées venant de phénomènes naturels. Il semble intéressant de chercher à obtenir les propriétés des “small world” pour améliorer la diffusion des informations dans le réseau. Dans les modèles de “small world” on réalise un recâblage des liens dans le réseau en changeant la taille et la direction des liens existants. Dans un environnement sans-fils autonome une organisation de ce type peut être créée en utilisant le flocking, l'inhibition latérale et le “beamforming”. Dans ce but, l'auteur utilise d'abord l'analogie avec l'inhibition latérale, le flocking et le “beamforming” pour montrer comment la diffusion des informations peut être améliorée. L'analogue de l'inhibition latérale est utilisé pour créer des régions virtuelles dans le réseau. Puis en utilisant l'analogie avec les règles du flocking, on caractérise les propriétés des faisceaux permettant aux nœuds de communiquer dans les régions. Nous prouvons que les propriétés des “small world” sont vérifiées en utilisant la mesure des moyennes des longueurs des chemins. Cependant l'algorithme proposé est valable pour les réseaux statiques alors que dans les cas introduisant de la mobilité, les concepts d'inhibition latérale et de flocking nécessiteraient beaucoup plus de temps. Dans le cas d'un réseau mobile la structure du réseau change fréquemment. Certaines connexions intermittentes impactent fortement la diffusion des informations. L'auteur utilise le concept de stabilité avec le “beamforming” pour montrer comment on peut améliorer la diffusion des informations. Dans son algorithme il prévoit d'abord la stabilité du nœud en utilisant des informations locales et il utilise ce résultat pour identifier les nœuds qui réaliseront du beamforming. Dans l'algorithme, les nœuds de stabilité faible sont autorisés à faire du beamforming vers les nœuds de forte stabilité. La frontière entre forte et faible stabilité est fixée par un seuil. Cet algorithme ne nécessite pas une connaissance globale du réseau, mais utilise des données locales. Les résultats sont validés en étudiant le temps au bout duquel plus de nœuds reçoivent l'information et en comparant avec d'autres algorithmes de la littérature. Cependant, dans les réseaux réels, les changements de structure ne sont pas dus qu'à la mobilité, mais également à des changements de la densité des nœuds à un moment donné. Pour tenir compte de l'influence de tels événements sur la diffusion des informations concernant la sécurité publique, l'auteur utilise les concepts de modèle de métapopulation, épidémiologiques, “beamforming” et mobilité géographique obtenu à partir de données D4D. L'auteur propose la création de trois états latents qu'il ajoute au modèle épidémiologique connu: SIR. L'auteur étudie les états transitoires en analysant l'évolution du nombre de postes ayant reçu les informations et compare les résultats concernant ce nombre dans les différents cas. L'auteur démontre ainsi que le scenario qu'il propose permet d'améliorer le processus de diffusion des informations. Il montre aussi les effets de différents paramètres comme le nombre de sources, le nombre de paquets, les paramètres de mobilité et ceux qui caractérisent les antennes sur la diffusion des informationsIn public warning message systems, information dissemination across the network is a critical aspect that has to be addressed. Dissemination of warning messages should be such that it reaches as many nodes in the network in a short time. In communication networks those based on device to device interactions, dissemination of the information has lately picked up lot of interest and the need for self organization of the network has been brought up. Self organization leads to local behaviors and interactions that have global effects and helps in addressing scaling issues. The use of self organized features allows autonomous behavior with low memory usage. Some examples of self organization phenomenon that are observed in nature are Lateral Inhibition and Flocking. In order to provide self organized features to communication networks, insights from such naturally occurring phenomenon is used. Achieving small world properties is an attractive way to enhance information dissemination across the network. In small world model rewiring of links in the network is performed by altering the length and the direction of the existing links. In an autonomous wireless environment such organization can be achieved using self organized phenomenon like Lateral inhibition and Flocking and beamforming (a concept in communication). Towards this, we first use Lateral Inhibition, analogy to Flocking behavior and beamforming to show how dissemination of information can be enhanced. Lateral Inhibition is used to create virtual regions in the network. Then using the analogy of Flocking rules, beam properties of the nodes in the regions are set. We then prove that small world properties are achieved using average path length metric. However, the proposed algorithm is applicable to static networks and Flocking and Lateral Inhibition concepts, if used in a mobile scenario, will be highly complex in terms of computation and memory. In a mobile scenario such as human mobility aided networks, the network structure changes frequently. In such conditions dissemination of information is highly impacted as new connections are made and old ones are broken. We thus use stability concept in mobile networks with beamforming to show how information dissemination process can be enhanced. In the algorithm, we first predict the stability of a node in the mobile network using locally available information and then uses it to identify beamforming nodes. In the algorithm, the low stability nodes are allowed to beamform towards the nodes with high stability. The difference between high and low stability nodes is based on threshold value. The algorithm is developed such that it does not require any global knowledge about the network and works using only local information. The results are validated using how quickly more number of nodes receive the information and different state of the art algorithms. We also show the effect of various parameters such as number of sources, number of packets, mobility parameters and antenna parameters etc. on the information dissemination process in the network. In realistic scenarios however, the dynamicity in the network is not only related to mobility. Dynamic conditions also arise due to change in density of nodes at a given time. To address effect of such scenario on the dissemination of information related to public safety in a metapopulation, we use the concepts of epidemic model, beamforming and the countrywide mobility pattern extracted from the $D4D$ dataset. Here, we also propose the addition of three latent states to the existing epidemic model ($SIR$ model). We study the transient states towards the evolution of the number of devices having the information and the difference in the number of devices having the information when compared with different cases to evaluate the results. Through the results we show that enhancements in the dissemination process can be achieved in the addressed scenario
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Medetov, Seytkamal. « Bio-inspired Approaches for Informatio Dissemination in Ad hon Networks ». Thesis, Belfort-Montbéliard, 2014. http://www.theses.fr/2014BELF0253/document.
Texte intégralRésumé :
La dissémination d’information dans les réseaux VANET est une opération fondamentale pour la sécurité routière. Il est dès lors nécessaire de concevoir et mettre en oeuvre des algorithmes efficaces et adaptatifs pour la dissémination d’informations sélectives et pertinentes.Dans ce travail, des approches Bio-inspirées sont proposées, à partir des comportements auto-organisés des essaims comme les colonies de fourmis et d’abeilles. Ces approches visent à fournir à chaque véhicule des informations en provenance de son environnement et alerter les conducteurs. Dans la première approche, le système de communication direct et indirect des fourmis est utilisé. Les fourmis partagent les informations sur les sources de nourriture avec des membres de la colonie en sécrétant la phéromone sur leurs chemins. La deuxième approche est inspirée par le système de communication des abeilles. Les abeilles partagent les informations à propos des sources de nourriture avec les autres membres de la ruche par des messages spécifiques, selon l’importance de ces sources.Une nouvelle mesure de "pertinence" associée aux messages est définie, par analogie à la sécrétion des phéromones des fourmis et au niveau de l’intensité des messages pour les abeilles, pour disséminer des informations de sécurité dans une zone géographique. Les simulations sont effectuées en utilisant le simulateur NS2 pour mesurer l’efficacité des approches proposées sous différentes conditions, en particulier en termes de densités et vitesses des véhiculesInformation dissemination in Vehicular Ad hoc Networks (VANETs) is a fundamental operation to increase the safety awareness among vehicles on roads. Thus, the design and implementation of efficient and scalable algorithms for relevant information dissemination constitutes a major issue that should be tackled.In this work, bio-inspired information dissemination approaches are proposed, that use self-organization principles of swarms such as Ant and Honey Bee colonies. These approaches are targeted to provide each vehicle with the required information about its surrounding and assist drivers to be aware of undesirable road conditions. In the first approach, Ant’s direct and indirect communication systems are used. Ants share information about food findings with colony members by throwing pheromone on the returning to the nest. The second, an RSU-based approach is inspired by the Bee communication system. Bees share profitable food sources with hive-mates in their hive by specific messages.A “relevance” value associated to the emergency messages is defined as an analogue to pheromone throwing in Ant colony, and as an analogue to profitability level in Bee colony, to disseminate safety information within a geographical area. Simulations are conducted using NS2 network simulator and relevant metrics are evaluated under different node speeds and network densities to show the effectiveness of the proposed approaches
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Wallace, Richard. « ETSU Medical Residents' Clinical Information Behaviors, Skills, Training, and Resource Use ». Digital Commons @ East Tennessee State University, 2007. https://dc.etsu.edu/etd/2076.
Texte intégralRésumé :
Information is a powerful tool for enabling physicians to provide quality healthcare for their patients. Information use in the clinic is a skill that must be learned. If medical residency programs fail to impart this skill, then patients will suffer.
The residents of the ETSU Quillen College of Medicine were surveyed as to their use of clinical information. Of the 217 residents of the 2005-2006 class who were surveyed, 105 returned the survey for a return rate of 48%. The clinical faculty was also surveyed in order to measure the responses of the residents against that of their instructors.
ETSU residents frequently had a new information need in the clinic. The majority of the time they did not seek an answer, but when they did they were often successful in finding an answer. Therapy information was the most frequently sought after type of information. Most residents used the Quillen College of Medicine Library, but not at a desirable rate. Residents stated that information obtained from the library was helpful in caring for their patients. The most frequent source of information used by residents was electronic resources and the greatest barrier to the use of information was time. The majority of residents were PDA users, with Palm devices being the primary platform. The residents rated their PDA skills and evidence-based medicine skills as above average. Few were LoansomeDoc users. The majority of residents received information training from clinical faculty and from librarians and rated it highly. Residents indicated a desire for more training and the majority indicated that they would like a clinical medical librarian for their program. They rated the library service of the Quillen College of Medicine and the area teaching hospitals highly. Residents used Google and the Web frequently. PubMed was rated as a valuable resource. Online journals and the UpToDate database were important electronic resources for the residents.
ETSU residents have many excellent resources and training opportunities in place. However, for ETSU residents to go out into community practice as true "Infomasters" an upgrading of their information training should be undertaken.
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Henry, Didier. « Modèles de propagation de l'information et méthodes de sciences des données ». Thesis, Antilles, 2018. http://www.theses.fr/2018ANTI0323/document.
Texte intégralRésumé :
De nos jours, les médias sociaux en ligne ont transformé notre façon de créer, de partager et d'accéder à l'information. Ces plateformes reposent sur de gigantesques réseaux favorisent le libre échange d'informations entre des centaines de millions de personnes à travers le monde entier, et cela de manière instantanée.Qu'ils soient en lien avec un évènement global ou en lien avec un évènement local, ces messages peuvent influencer une société et peuvent contenir des informations utiles pour la détection ou la prédiction de phénomènes du monde réel.Cependant, certains messages diffusés peuvent avoir un impact très négatif dans la vie réelle. Ces messages contenant une « infox » peuvent avoir des conséquences désastreuses.Pour éviter et anticiper ces situations dramatiques, suivre les rumeurs, éviter les mauvaises réputations, il est nécessaire d'étudier puis de modéliser la propagation de l'information.Or, la plupart des modèles de diffusion introduits reposent sur des hypothèses axiomatiques représentées par des modèles mathématiques. Par conséquent, ces modèles sont éloignés des comportements de diffusion des utilisateurs dans la mesure où ils n’intègrent pas les observations faites sur des cas concrets de diffusion. Dans nos travaux, nous étudions le phénomène de diffusion de l’information à deux échelles. À une échelle microscopique, nous avons observé les comportements de diffusion selon des traits de personnalité des utilisateurs en analysant les messages qu'ils publient en termes de sentiments et d'émotions. À une échelle macroscopique, nous avons analysé l'évolution du phénomène de diffusion en prenant en compte la dimension géographique des utilisateursNowadays, online social media has transformed the way we create, share and access information. These platforms rely on gigantic networks that promote the free exchange of information between hundreds of millions of people around the world, and this instantly.Whether related to a global event or in connection with a local event, these messages may influence a society and may contain information useful for the detection or prediction of real-world phenomena.However, some broadcast messages can have a very negative impact in real life. These messages containing false information can have disastrous consequences.To avoid and anticipate these dramatic situations, follow rumors, avoid bad reputations, it is necessary to study and then model the propagation of information.However, most of the diffusion models introduced are based on axiomatic hypotheses represented by mathematical models. As a result, these models are far removed from the users' dissemination behaviors in that they do not incorporate observations made on concrete dissemination cases. In our work, we study the phenomenon of diffusion of information at two scales. On a microscopic scale, we observed diffusion behaviors based on the personality traits of users by analyzing the messages they post in terms of feelings and emotions. On a macroscopic scale, we analyzed the evolution of the diffusion phenomenon by taking into account the geographical dimension of the users
Livres sur le sujet "BG. Information dissemination and diffusion"
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Pinelli, Thomas E. NASA/DoD aerospace knowledge diffusion research project : summary report to phase 1 respondents. Hampton, Va : Langley Research Center, 1991.
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Pinelli, Thomas E. NASA/DoD aerospace knowledge diffusion research project : summary report to phase 3 faculty and student respondents including frequency distributions. Hampton, VA : Langley Research Center, 1991.
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Morrison, Elizabeth W. NASA/DoD Aerospace Knowledge Diffusion Research Project. : Results of an initial investigation. [Washington, D.C.] : National Aeronautics and Space Administration, 1996.
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E, Pinelli Thomas, et United States. National Aeronautics and Space Administration., dir. NASA/DoD Aerospace Knowledge Diffusion Research Project. : Results of an initial investigation. [Washington, D.C.] : National Aeronautics and Space Administration, 1996.
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Murphy, D. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC] : National Aeronautics and Space Administration, 1994.
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United States. National Aeronautics and Space Administration. et United States. Dept. of Defense., dir. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC] : National Aeronautics and Space Administration, 1994.
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Murphy, D. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC] : National Aeronautics and Space Administration, 1994.
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Murphy, D. NASA/DoD aerospace knowledge diffusion research project. [Washington, DC] : National Aeronautics and Space Administration, 1994.
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Pinelli, Thomas E. Aerospace knowledge, diffusion research project. [Washington, DC] : National Aeronautics and Space Administration, 1996.
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O, Barclay Rebecca, Kennedy John M et United States. National Aeronautics and Space Administration., dir. Aerospace knowledge, diffusion research project. [Washington, DC] : National Aeronautics and Space Administration, 1997.
Trouver le texte intégralChapitres de livres sur le sujet "BG. Information dissemination and diffusion"
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Grover, Purva, et Arpan Kumar Kar. « “#Government” - Understanding Dissemination, Transparency, Participation, Collaboration and Engagement on Twitter for Citizens ». Dans Re-imagining Diffusion and Adoption of Information Technology and Systems : A Continuing Conversation, 365–76. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-64849-7_33.
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Vieri, Marco, Daniele Sarri, Sofia Matilde Luglio et Carolina Perna. « Didattica immersiva nell’Ingegneria Agraria. Un caso d’uso nel Laboratorio di Agricoltura Digitale e di Alta Tecnologia ». Dans Studi e saggi, 103–8. Florence : Firenze University Press, 2022. http://dx.doi.org/10.36253/978-88-5518-646-9.13.
Texte intégralRésumé :
The chapter describes experiences of 360° videos use by the Agrismart Lab Group of the University of Florence. The Agrismart Lab Group focuses on the technological transfer of information obtained during the research phase to provide the greatest possible diffusion and dissemination of discoveries regarding the technological-digital revolution in the agricultural sector. Dissemination, applications, and teaching are the main outcomes of our research activities, and we have fully utilized the SEPA360 project's resources. In particular, the student will be able to see smart farming examples both in the field and in the immersive teaching lab having clearer theoretical notions by 360° viewers. Two case studies (tractor 4.0 and Agrobot) are included in the interactive videos, which are utilized both for learning and verification.
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Oladokun, Olugbade, et Saul F. C. Zulu. « Document Description and Coding as Key Elements in Knowledge, Records, and Information Management ». Dans Information Diffusion Management and Knowledge Sharing, 155–73. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0417-8.ch009.
Texte intégralRésumé :
Document description and coding are key operations to information storage and retrieval systems. Description makes it possible for users to obtain information about the documents while coding provides unique numbers to described documents, and enables users to locate, retrieve and store documents manually or electronically. Consequent upon the mass production of information and attendant information explosion, modern libraries and other information dissemination institutions, attached to various institutions, were established. A need therefore arose to put in place systems of achieving bibliographic control over the information produced and collected to facilitate its identification and location wherever it may be found. Among the major systems or tools that information professionals developed to achieve bibliographic control and organization of information include: cataloguing, classification, indexing and abstracting. Using largely documentary sources, the chapter makes a case on the critical role of document description and coding systems in information and knowledge management.
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Carvalho, Marco. « In-Stream Data Processing for Tactical Environments ». Dans E-Government Diffusion, Policy, and Impact, 295–312. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-130-8.ch017.
Texte intégralRésumé :
Data dissemination and information management technologies for tactical environments are quickly becoming major areas of research for both military and civilian applications. Critical to the problem is the need for fully distributed information management technologies that are efficient, adaptive and resilient. In this paper, we introduce and discuss a new strategy for tactical data dissemination and processing based on distributed online learning. Starting from a formal description of the problem we introduce our proposed solution and its theoretical properties. We also present and discuss a number of simulation experiments for different data dissemination scenarios, and conclude the work with a discussion on how such techniques may be applied to critical e-government environments under different assumptions of service availability and information release policies.
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Saini, Damini. « Ethics in Knowledge Dissemination ». Dans Advances in Business Strategy and Competitive Advantage, 317–34. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3009-1.ch015.
Texte intégralRésumé :
In the modern socio-economic scenario, knowledge dissemination has turn out to be an essential topic. Effective knowledge dissemination is significant for the organizations as knowledge is shared not only with people working within the organizations but with a long list of stakeholders attached with the organization. Dissemination of knowledge has drawn a wide attention to related ethical considerations, as sometimes information shared in unregulated and subversive ways or unreliable or false information is shared with people. To understand the role of ethics in knowledge dissemination in organizations this chapter provides a discussion of implications of the questions of relevance, predicament and systems of ethical knowledge diffusion. Further the author illustrates distortion of information or knowledge for self-interest, their causes and effects with relevant examples. The chapter identifies the ethics of “informal” and unauthorized transfer of information, and proposes solutions and approach to deal with the problem.
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Dahawy, Khaled, et Sherif Kamel. « The Use of Information Technology in Teaching Accounting in Egypt ». Dans Global Information Technologies, 1955–72. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-939-7.ch141.
Texte intégralRésumé :
The use of information and communication technology has become an integral component and a vital tool in teaching accounting. Over the last few decades, the blend of using state-of-the-art technologies has improved the effectiveness and efficiency of the learning process. Respectively, some predict that physical campuses will decay and crumble in the near future with the continuous growth of borderless societies and the diffusion of extended enterprises leading to a hybrid model for knowledge delivery that extends beyond distance and time barriers. The main emphasis of this case is to study the deployment of technology in teaching accounting in Egypt, using the case of Becker Professional Review in providing trainees with the required training that enables them to pass exams and get professional certification using emerging information technology tools and techniques. The case demonstrates how information technology adaptation can provide a platform for knowledge dissemination and demonstrates a model that can be replicated in similar environments.
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Sharma, Dilip Kumar, Gopalji Varshneya et Ashwani Kumar Upadhyay. « AJAX in Development of Web-Based Architecture for Implementation of E-Governance ». Dans E-Government Diffusion, Policy, and Impact, 313–26. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-130-8.ch018.
Texte intégralRésumé :
This article analyzes the diffusion of a Web technology named AJAX in facilitating e-government architecture and enhancing its potential by enablement of modern Web features as democracy and collaboration. Flexibility needed for free flow of interactive collaboration, compatibility, and robustness is treated as vital in the chapter. Major enterprises that have created landmarks in terms of participation of individuals and enterprises, along with contemporary Web technologies, are also analyzed to consolidate priority of technologies befitting robust and sustainable Web architecture. Emphasis is on the point that a proper collaboration among private, public, and government entities can only be achieved by proper information dissemination and acceptance of competent Web technologies, AJAX being one of them. Features of AJAX such as sectional processing ability, speed, bridging, portability, and compatibility are viewed with criticality for practical establishment.
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Akakandelwa, Akakandelwa. « The Diffusion of the Concept of Knowledge Management among African Scholars ». Dans Managing Knowledge Resources and Records in Modern Organizations, 124–48. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1965-2.ch008.
Texte intégralRésumé :
Knowledge Management (KM) is a new phenomenon that is directly related to the recent emergence of the knowledge economy and technology advancement. It consists of the initiatives and systems that sustain and support the creation, storage, dissemination, assessment, application, refinement and exchange of relevant knowledge (UNDP, 2012). The application of Knowledge Management, generally, can assist to facilitate the capturing and sharing of various experiences by societies. Its acquisition can ensure that knowledge is converted to useful information which informs decision making. This sharing of experience and knowledge can take place through formal meetings or in informal encounters and should be managed through structured Knowledge Management processes. The understanding of what constitutes Knowledge Management (KM) has different meanings to different people. This paper investigates the diffusion of the concept of Knowledge Management in Africa in the last two decades using bibliometric techniques. The paper has investigated the total production of Knowledge Management related publications by African researchers. Furthermore, the paper has investigated the diffusion of KM concept through collaboration among institutions of higher learning (universities, colleges, and polytechnics). It also investigated the preferred channels of dissemination of KM research, the most prolific African researchers on KM, and the prominent journals in which these researchers publish their publications.
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Akakandelwa, Akakandelwa. « The Diffusion of the Concept of Knowledge Management among African Scholars ». Dans African Studies, 399–423. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-3019-1.ch022.
Texte intégralRésumé :
Knowledge Management (KM) is a new phenomenon that is directly related to the recent emergence of the knowledge economy and technology advancement. It consists of the initiatives and systems that sustain and support the creation, storage, dissemination, assessment, application, refinement and exchange of relevant knowledge (UNDP, 2012). The application of Knowledge Management, generally, can assist to facilitate the capturing and sharing of various experiences by societies. Its acquisition can ensure that knowledge is converted to useful information which informs decision making. This sharing of experience and knowledge can take place through formal meetings or in informal encounters and should be managed through structured Knowledge Management processes. The understanding of what constitutes Knowledge Management (KM) has different meanings to different people. This paper investigates the diffusion of the concept of Knowledge Management in Africa in the last two decades using bibliometric techniques. The paper has investigated the total production of Knowledge Management related publications by African researchers. Furthermore, the paper has investigated the diffusion of KM concept through collaboration among institutions of higher learning (universities, colleges, and polytechnics). It also investigated the preferred channels of dissemination of KM research, the most prolific African researchers on KM, and the prominent journals in which these researchers publish their publications.
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Malhotra, Charru, V. M. Chariar et L. K. Das. « Making ICT more Meaningful for Governance in the Rural Areas ». Dans E-Government Development and Diffusion, 66–79. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-713-3.ch005.
Texte intégralRésumé :
The speed and outreach enabled by information and communication technologies (ICT) have improved mechanisms of delivery of information, services and products to the public. ICT as an enabler of governance, christened as e-governance, is seen as means of attaining good governance. The millennium development goals (MDG) of targeting the poor, listening to the poor and learning from the poor seem to be more within the reach through the use of ICT. However the sustainability of majority of rural ICT interventions has not been very encouraging. The study of literature attributes this negligible success rate to several factors including neglect of traditional indigenous knowledge in the projects designed for rural masses. Authors of this study propose that by defining a proper framework and by use of proper methodologies, community knowledge systems (CKS) of a rural region, when incorporated in an e-governance initiative can assist various actors and processes of governance to attain good governance. Projects based on the proposed CKS based G2C2G framework are expected to be more sustainable and effective for ushering development in the rural areas. However, implementation of such projects would however require synergistic efforts between the government functionaries, aid agencies, non-profit organizations and the rural citizens. The prime hypothesis is that the assimilation, improvisation and dissemination of the traditional community knowledge systems (CKS) using ICT initiatives for rural governance, would help to liberate local ingenuity to catalyse sustainable rural development.
Actes de conférences sur le sujet "BG. Information dissemination and diffusion"
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Naqvi, Syed, et Hafedh Al-Shihi. « M-Government Services Initiatives in Oman ». Dans InSITE 2009 : Informing Science + IT Education Conference. Informing Science Institute, 2009. http://dx.doi.org/10.28945/3389.
Texte intégralRésumé :
Information technology and communications have now become the main elements that move forward and help Oman in its national development process. Internet penetration in most developing countries like Oman is still low as oppose to mobiles dissemination, despite the government plans and strategies to enhance internet diffusion. Internet subscribers comprised about 2.5% of the general population of Oman. In contrast, the number of mobile holders increased substantially since the launch of these services in 1996. Prepaid mobile services and SMS were introduced in 2001 and both are currently popular with subscribers. Such fine appeal influenced many government organizations to go mobile with their services. This paper reviewed the ICT sector and the current m-government initiatives in Oman setting up the mobile services and aimed to understand the key factors to adoption and diffusion of these services.
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Silva, Samuel O., Bruno O. Goulart, Maria Júlia M. Schettini, Carolina Xavier et João Gabriel Silva. « Estudo comparativo de métricas de ranking em Redes Sociais ». Dans Encontro Nacional de Computação dos Institutos Federais. Sociedade Brasileira de Computação - SBC, 2020. http://dx.doi.org/10.5753/encompif.2020.11068.
Texte intégralRésumé :
The use of modeling and application of complex networks in several areas of knowledge have become an important tool for understanding different phenomena; among them some related to the structures and dissemination of information on social medias. In this sense, the use of a network's vertex ranking can be applied in the detection of influential nodes and possible foci of information diffusion. However, calculating the position of the vertices in some of these rankings may require a high computational cost. This paper presents a comparative study between six ranking metrics applied in different social medias. This comparison is made using the rank correlation coefficients. In addition, a study is presented on the computational time spent by each ranking. Results show that the Grau ranking metric has a greater correlation with other metrics and has low computational cost in its execution, making it an efficient indication in detecting influential nodes when there is a short term for the development of this activity.
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Barbosa, Carlos, Lucas Félix, Vinícius Vieira et Carolina Xavier. « Sara - A Semi-Automatic Framework for Social Network Analysis ». Dans XXV Simpósio Brasileiro de Sistemas Multimídia e Web. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/webmedia_estendido.2019.8137.
Texte intégralRésumé :
Understanding the dissemination of information in social networks has become essential for modern societies. These networks have dramatically changed the mode of communication, relationship, marketing, and access to information. Platforms such as Twitter, and WhatsApp are some representatives of these new information propagation media that represented a major shift in a model centered on traditional communication vehicles. This new decentralized environment gave voice to marginalized groups, riots such as the Arab Spring, growth of populist parties and false news waves across the globe. Therefore, considering the influence of these platforms in several aspects of society, this work presents a framework for characterizing the diffusion of information in social networks, especially on Twitter. This characterization is accomplished through the use of complex network and text mining techniques, exploring the generation of a retweets network, the formation of communities around specific users, cascades of information, analysis of feelings and modeling of topics. As an evaluation this model is applied in characterizing a network of retweets generated around the discussion of pension reform of Brazil on Twitter.
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Santos, Mariana Bastos Rodrigues dos, Felipe dos Santos Souza, Pedro Felisberto Nogueira Viana Farah, Yasmim Evelyn Lisboa Barbosa et Felipe Oliveira Costa. « Early diagnosis of RelapsingRemitting Multiple Sclerosis : a review of the bibliography from 2016 to 2021 ». Dans XIII Congresso Paulista de Neurologia. Zeppelini Editorial e Comunicação, 2021. http://dx.doi.org/10.5327/1516-3180.203.
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Background: Multiple Sclerosis (MS) is a neurodegenerative disease of the Central Nervous System (CNS), which damages myelin and axons by interrupting or reducing the flow of information. Early diagnosis of MS is essential to slow disease progression. The last review of the McDonald criteria, which organize the diagnosis of MS, took place in 2017 and it is necessary to understand the evidence that emerged in this period. Objectives: Review the updates of the bibliography published between 2016 and 2021. Design and setting: Bibliographic review made in Rio de Janeiro, Brazil. Methods: This research was made from Pubmed database search with the descriptors “Multiple Sclerosis Relapsing-Remitting” and “Early Diagnosis” and the filters “free full text”, “english”, “Portuguese”, “5 years”, “humans”. The discarded articles did not contemplate the entire theme in the design, content or quality of publication. Results: Patients with the first clinical event suggesting MS that meet the criteria for space dissemination may be diagnosed with relapsing-remitting multiple sclerosis (RRMS) when oligoclonal bands in the cerebrospinal fluid are detected, while other methods such as infrared spectroscopy and diffusion tensor tractography still show many concomitant signs among the varieties of MS. Conclusions: Cerebrospinal fluid analysis is the most sensitive criterion for early diagnosis of RRMS.
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Teixeira, André, João Pedro Polito, Júlio Santos et Marcos Kakitani. « Competition, research and extension : the three approaches to the popularization of small satellites in the Alto Paraopeba region in Brazil ». Dans Symposium on Space Educational Activities (SSAE). Universitat Politècnica de Catalunya, 2022. http://dx.doi.org/10.5821/conference-9788419184405.124.
Texte intégralRésumé :
There are several approaches to the diffusion of the space technologies, three of them are in this work: competition, research, and extension. Thus, the objective of this work is to focus on presenting the results of the Brazilian nanosatellite team called NoizOrbita, and also to qualify quantitatively the impact of using these approaches in popularizing the topic of small satellites for space educational purposes. The team was founded on September 29, 2020, by three people: an alumni of Telecommunications Engineering at Federal University of São João del- Rei (UFSJ), Alto Paraopeba Campus (CAP), currently pursuing his Ph.D. in CubeSat Antennas at UFSC; a student currently in the 6th period of the Telecommunications Engineering undergraduate course (class of 2019); and a professor in the Department of Telecommunications and Mechatronics Engineering (DETEM). This initiative is intended to be a gateway to the space/satellite technologies in the institution and is based on three main pillars: Competitions, Research, and Extension in Nanosatellites. The team aims to obtain and develop small satellite technologies involving CAP undergraduate and graduate students, which enables them to learn the concepts of Space Engineering with the methodology of "learning by doing", covering the entire lifecycle of a spacecraft, even in a less complex way, through Systems Engineering approach. It also encourages the students to carry out scientific studies, prepare and publish papers, participate in conferences, and through extension, spread all the knowledge acquired in the various layers of society in the Alto Paraopeba region. Team members are all undergraduate and graduate students. Considering that one of the main characteristics of the team is its multidisciplinary nature, it leads to the advantage that students from all courses offered at CAP can join the group. This is reflected a lot by the concept of satellite engineering, since professionals from various areas of knowledge are sought for working with satellites and small satellites. Thus, in this work the main numbers related to the team were gathered, collected and presented in order to assess the impact and/or reach of the activities in its first year of existence. Data were extracted from databases, histories, and records on the various knowledge and information dissemination platforms. Regarding the research approach, the team obtained a significant number of scientific productions; regarding extension, presentations with satellite subjects were performed; and a great achievement with the competition aspect was obtained, which shows the effectiveness of these three approaches.
Rapports d'organisations sur le sujet "BG. Information dissemination and diffusion"
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Cuesta-Valiño, Pedro. Happiness Management. A Social Well-being multiplier. Social Marketing and Organizational Communication. Sous la direction de Rafael Ravina-Ripoll. Editorial Universidad de Sevilla, 2022. http://dx.doi.org/10.12795/2022.happiness-management.
Texte intégralRésumé :
On behalf of the Happiness University Network, we are pleased to present here an extract of the information concerning the universities working to generate the diffusion of this network. Specifically, with the support of the University of Salamanca and the Pontifical University of Salamanca the aim is to create a friendly and working environment for the dissemination and discussion of the latest scientific and practical developments in the fields of happiness economics, corporate wellbeing, happiness management and organisational communication. It also offers an opportunity for productive encounters, the promotion of collaborative projects and the encouragement of international networking. Below you will find papers related to: Economics of happiness, happiness management, organisational communication, welfare state economics, consumer happiness, leadership, social marketing, happiness management and SDGs, happiness management in human resource strategies, learning and competencies in happiness management, learning and competencies in social well-being, measurement and indicators of happiness and well-being and history of welfare economics.