Establishing Networks

Establishing Networks

Introduction

A social network consists of any group of individuals connected by different social links. For humans ties ranging from casual acquaintance, work relationships, family ties. Social networks are often used as the basis for cross-cultural studies in sociology, in anthropology, in ethnology. The analysis of social networks, which is the mapping and measuring of social networks, it can be done with a mathematical formalism using graph theory. In general, the body of theory and models used in the study of social networks are included in the so-called social network analysis. The research conducted within different disciplinary approaches has shown that social networks operate at different levels (from families to national communities) and play a crucial role in determining how the problem-solving and management systems of organisations, as well as the possibility individuals to achieve their goals. The spread of the web and the term social network has developed in recent years some ambiguity of meaning. The social network is in fact, historically, in the first place, a physical network.

Social network is, for example, a community of workers, found in the relevant circles and that is one of the associations of social promotion. Examples of social networks are also communities of sports, or active supporters of events, communities united by issues closely and working to protect trade union rights in the work, the brotherhoods and the community in general based on the common practice of a religion and the meeting in churches , temples , mosques , synagogues and other places of worship. A social network may also rely on a common educational approach as in Scouting, or pioneering, viewing social networks as secret Carbonari and freemasonry.

Discussion

Dunbar's Number

The number of Dunbar, also known as the rule of 150 , states that the size of a social network capable of supporting stable relationships are limited to about 150 members.

This number was calculated from studies of sociology and especially anthropology, in relation to the maximum size of a village (in terms of latest best described as an ecovillage). In evolutionary psychology is theorized that the number could be some sort of limit to the ability of the average humans to recognize members and track emotional events of all people in a group. Other explanations are based on assessments more economic groups and the need to identify the parasitic elements or dysfunctional, as larger groups tend to facilitate the presence of deceivers and liars.

Network Density

A social network, always expressible by means of a graph, is characterized by its own density. If with the nodes of a given graph identify individuals and with the arches of the links between them are established, then the density of a network can make an idea of how efficient the relational interchange between the various elements of the network same. If all elements of the network between their ties then the density of the network would be equal to one, otherwise, in the case where the network elements do not communicate with each other, the density ...