78 research outputs found
Teoria de redes, Educação e Difusão do conhecimento
Nuestra idea es presentar este número especialsobre teoría de redes, educación y difusióndel conocimiento a partir de una síntesis de losartículos que lo componen. Considerando queel interés de la revista Obra digital consiste eninvestigaciones en el ámbito de la comunicacióny áreas afines, nuestra respuesta ha sidoreunir diversos trabajos. Los lectores de estenúmero encontrarán modelos teóricos que,basándose en simulaciones, auxilian en la explicacióny predicción de procesos como la difusiónde conocimiento en redes sociales, enlas que la colaboración y la cooperación entreindividuos toman lugar; también encontraránmodelos de redes relacionados con el entendimientode discursos, ya sean como herramientasde apoyo o como método y técnica deanálisis. Incluso, un trabajo que trata del mapeode las redes de interacción entre los diversosactores que componen comunidades depráctica. Finalmente, un artículo que presentaun protocolo estándar para la descripción dejuegos digitales
Teoria de redes e sa´úde
Revista Saúde.co
Study on behavioral impedance for route planning techniques from the pedestrian's perspective: some findings and considerations
The multi-disciplinary characteristics of transportation force
a new design of geographic information systems, within which
these characteristics are considered. In this context, geographic
information systems for transportation are the result of the
integration of transportation information systems and conventional
geographic information systems. An interesting research area
in geographic information systems for transportation is constraint
management in route planning algorithms from the pedestrian s
perspective. Constraint management becomes more complex when
route planning takes into account an integrated public transportation
network (i.e. a multimodal network). A study on the theoretical
contextualization and taxonomy of a pedestrian s behavioral
impedance has been developed in order to improve the constraint
management from the pedestrian s perspective. This study entails
strategies of travel reduction by private transport (e.g. travel
by car) through switching to or substitution by alternative
public transport (e.g. travel by walk, bus or rail). The
grounded theory method has been used to develop the proposed
taxonomy. Using the partial results of a questionnaire applied
to a reduced group of people from Barcelona as a starting
point, important data are being collected to define the mathematical
model of the behavioral impedance domain. The goal of this
paper is to provide some considerations about theoretical contextualization
on identification and management of constraints regarding the
behavioral impedance domain from the pedestrian s perspective
within the urban public transportation context. The research
project where this work is included is composed of six major
phases. The first phase represents a continuous bibliographic
review. The second phase was a study on sidewalks in the university
zone of Barcelona. In this phase, an experimental application
has been proposed and the management, map and route modules
have been implemented on the ArcInfo GIS package and C++. This
paper reports the partial work of the third phase, which is
composed of two parts. The first part was a theoretical study on
behavioral impedance for route planning techniques, in which
taxonomy was proposed. The results of the second part are partially
presented in this paper. The fourth (i.e. design and implementation),
fifth (i.e. calibration and validation) and sixth (i.e. generalization
of the results) phases are characterized by the application
of the prototype regarding the multimodal network model for
urban public transportation from the pedestrian s perspective.
The main contribution of this article is the behavioral impedance
taxonomy review from the pedestrian s perspective, which will allow
designing a mathematical model and be used to implement a constraint
management algorithm. Within this context, the proposed taxonomy
could be used to model cost functions more precisely.Postprint (published version
Study on behavioral impedance for route planning techniques from the pedestrian's perspective: Part I - Theoretical contextualization and taxonomy
The interest of researchers for analyzing of best routes and shortest
paths allows a continuous technological advance in topological analysis
techniques used in the geographic information systems for
transportation. One of the topological analysis techniques is the route
planning, in which the constraint management must be considered. There
have been few studies where the constraint domain for pedestrian in an
urban transportation system was clearly stated. Consequently, more
studies need to be carried out. The aim of this paper is to provide a
theoretical contextualization on identification and management of
constraints to ascertain the behavioral impedance domain from the
pedestrian perspective. In this part of the research the grounded theory
was the research method used to develop the proposed theory. A
meta-model was used to (1) define the behavioral domain structure, (2)
hold the behavioral data collection and (3) verify the design of the
proposed taxonomic tree. The main contribution of this article is the
behavioral domain taxonomy from the pedestrian perspective, which will
be used to implement a module responsible for the constraint management
of an experimental application, named Router. Within this context, the
proposed taxonomy could be used to model cost functions more precisely.Postprint (published version
Study on k-shortest paths with behavioral impedance domain from the intermodal public transportation system perspective
Behavioral impedance domain consists of a theory on route planning for pedestrians, within which constraint management is considered. The goal of this paper is to present the k-shortest path model using the behavioral impedance approach. After the mathematical model building, optimization problem and resolution problem by a behavioral impedance algorithm, it is discussed how behavioral impedance cost function is embedded in the k-shortest path model. From the pedestrian's route planning perspective, the behavioral impedance cost function could be used to calculate best subjective paths in the objective way.Postprint (published version
A rede social de ajuda-mútua de Narcóticos Anônimos : a relevância do prestígio, da centralidade de intermediação entre os membros
O presente trabalho teve como foco a recuperação de usuários de drogas decorrentes de suas inserções em grupos de ajuda-mútua de Narcóticos Anônimos. Descrito o método da construção e análise de uma rede social formada pelos membros de uma associação baseada nos princípios terapêuticos dos doze-passos. Foram avaliadas as dimensões proximidade, afastamento, padrinho e confiança na rede. Uma das análises relaciona os atores quanto ao prestígio e a rejeição, e outra sobre o controle do fluxo de informações entre eles. A topologia é de uma rede Livre de escala. Os resultados mostraram que o uso da teoria de redes permite entender o papel de cada membro do grupo. O efeito da dinâmica de grupo identifica lideres que influenciam as pessoas da rede. O compartilhamento de valores na re-educação tem permitido que a abstinência seja um valor crucial.This work was focused on drug user's recovery arising from its inserts in self-help groups of Narcotics Anonymous. Described the method of construction and analysis of a social network formed by members of an association based on therapeutic principles of the 12 steps. Proximity dimensions were evaluated, clearance, godfather and trust in the network. One of analysis lists the actors as the prestige and the rejection, and other on controlling the flow of information between them. The topology is a scale free network. The results showed that the use of the network theory allows us to understand the role of each member of the group. The effect of group dynamics identifies leaders influencing people network. Sharing values in re-education has allowed abstinence to be a crucial value in the recovery of drug us
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