background preloader

Social network

Social network
Social networks and the analysis of them is an inherently interdisciplinary academic field which emerged from social psychology, sociology, statistics, and graph theory. Georg Simmel authored early structural theories in sociology emphasizing the dynamics of triads and "web of group affiliations."[2] Jacob Moreno is credited with developing the first sociograms in the 1930s to study interpersonal relationships. These approaches were mathematically formalized in the 1950s and theories and methods of social networks became pervasive in the social and behavioral sciences by the 1980s.[1][3] Social network analysis is now one of the major paradigms in contemporary sociology, and is also employed in a number of other social and formal sciences. Together with other complex networks, it forms part of the nascent field of network science.[4][5] Overview[edit] History[edit] Levels of analysis[edit] Self-organization of a network, based on Nagler, Levina, & Timme, (2011)[32] Micro level[edit] In J.A.

Category:Social networking services From Wikipedia, the free encyclopedia Subcategories This category has the following 20 subcategories, out of 20 total. Pages in category "Social networking services" The following 200 pages are in this category, out of 814 total. (previous 200) (next 200)(previous 200) (next 200) Steve Jobs Resigns As CEO Of Apple Title says it all. More to come. For now, the letter from Steve Jobs himself: To the Apple Board of Directors and the Apple Community:I have always said if there ever came a day when I could no longer meet my duties and expectations as Apple’s CEO, I would be the first to let you know. Update: Apple has confirmed that Apple COO Tim Cook will replace Jobs as CEO, following Jobs’ own recommendation. Also as requested, Jobs has been elected as Chairman of the Board and will remain with the company in that capacity.

Social Network Analysis: An Introduction by Orgnet,LLC Social network analysis [SNA] is the mapping and measuring of relationships and flows between people, groups, organizations, computers, URLs, and other connected information/knowledge entities. The nodes in the network are the people and groups while the links show relationships or flows between the nodes. SNA provides both a visual and a mathematical analysis of human relationships. Management consultants use this methodology with their business clients and call it Organizational Network Analysis [ONA]. ONA allows you to x-ray your organization and reveal the managerial nervous system that connects everything. To understand networks and their participants, we evaluate the location and grouping of actors in the network. We look at a social network -- the "Kite Network" above -- developed by David Krackhardt, a leading researcher in social networks. Degree Centrality Betweenness Centrality Closeness Centrality Network Centralization Network Reach Not all network paths are created equal.

Social Network Theory Baym, N.K. 1995. The emergence of community in computer-mediated communication. In Cybersociety: Computer-Mediated Communication and Community, ed. S.G. Jones, pp. 138-163. Burkhardt, M.E. & Brass, D.J. (1990). Chidambaram, L., & Bostrom, R. Chidambaram, L., & Bostrom, R.P. (1997b). Constant, D., Sproull, L., and Keisler, S. (1996). G. M. L. L. C. C. C. Greg Madey, Vincent Freeh, Renee Tynan “The Open Source Software Development Phenomenon: An Analysis Based On Social Network Theory”, AMCIS, 2002 L. Sudweeks, F., M.L. Microsoft quietly launches So.cl social network | Internet & Media In the wake of the IPO of social-networking giant Facebook, Microsoft has quietly launched So.cl, its own social networking foray. However, So.cl isn't designed to be a Facebook challenger. The project, the details of which leaked out last year , is designed to give students the ability to network with their peers to share information. "FUSE Labs' So.cl project is now accepting all users interested in joining the site," a Microsoft representative told CNET. "So.cl (pronounced 'social') combines search and social networking for the purpose of learning and is the latest experiment from FUSE Labs," Microsoft said in a description of the app. Much like Facebook's share or recommend buttons, So.cl has a "bookmarklet" feature that adds a "Share on So.cl" button to users' bookmarks toolbars, allowing them to share interesting Web sites with other So.cl users.

Usenet Diskussionen werden im Newsreader als Bäume dargestellt. Hier eine Newsgroup in dem Programm Mozilla Thunderbird. Das Usenet (/ˈjuːznɛt/, urspr. Funktionsweise[Bearbeiten] Die Funktionsweise des Usenet wird oft mit Schwarzen Brettern verglichen: Jemand schreibt eine Nachricht (das posting), und heftet diese an das Schwarze Brett, wo sie für jeden Interessierten sichtbar und abrufbar ist. Ein passenderer Vergleich, von dem auch die Usenet-Sprache herrührt, ist das Zeitungswesen: Jemand schreibt einen Artikel (eine news bzw. einen article) für die Zeitung (newsgroup).Ein Leser nimmt auf diesen Artikel Bezug und schreibt einen Leserbrief (ein follow-up), den er an die Zeitung schickt.Durch die Veröffentlichung wird dieser Leserbrief seinerseits zu einem Artikel, auf den sich nun weitere Leser beziehen können, somit entsteht also eine Kommunikation in beide Richtungen. Benutzung[Bearbeiten] Umgangsformen[Bearbeiten] Die Netiquette unterscheidet sich teilweise von Hierarchie zu Hierarchie.

Steve Jobs et Apple: omniprésent, mais pas indispensable Temps de lecture: 5 min Steve Jobs est mort mercredi 5 octobre à l'âge de 56 ans. Avant la nécrologie écrite par notre confrère de Slate.com Farhad Manjoo, nous republions un de ses articles écrit à la fin de l'été, au moment de la démission de Jobs de son poste de PDG, soulignant qu'Apple n'est plus aussi dépendant de son fondateur légendaire que dans le passé et que la société survivrait. Le 25 août, l'action d'Apple a chuté. Loin de moi l'idée de critiquer le bilan de Jobs. Une marque de luxe devenue grand public Son influence se fait sentir à tous les niveaux. Non seulement l'iPad est l'une des tablettes les moins onéreuses de sa catégorie, mais Apple en retire un bénéfice supérieur à celui des sociétés qui proposent des appareils plus chers - une stratégie qu'elle applique à la plupart de ses produits. Ce dernier point - le maintien des marges - est l'un des axes principaux de la philosophie de Steve Jobs. Ne jamais vendre à perte Jobs n' a jamais opté pour ces astuces. Machine à buzz

New ‘OpenID Connect’ Proposal Could Solve Many of the Social Web David Recordon, one of the key architects of OpenID and other identity technologies that have emerged over the past five years, has envisioned a new direction for OpenID. His proposal, which was drafted with input from several people in the OpenID community, is called OpenID Connect. At the highest level, it essentially rebuilds OpenID on top of OAuth 2.0, combining the two popular open source systems for authenticating users and letting them share data with social websites and applications. “OpenID Connect is an attempt to pull the best pieces of two separate technologies together, to create a single technology stack that’s simpler for everyone to use,” Recordon tells Webmonkey. The proposed approach combines several interactions around logging in and sharing data with a website or application into one simple step. OpenID Connect hopes to broaden the technology’s reach as well. Many of the complexity problems in OAuth were solved by the creation of OAuth 2.0 earlier this year. See Also:

Related:  collaborative_communicationsComplex Networks Theory