913 resultados para NETWORK THEORY
Resumo:
Supply Chain Risk Management (SCRM) has become a popular area of research and study in recent years. This can be highlighted by the number of peer reviewed articles that have appeared in academic literature. This coupled with the realisation by companies that SCRM strategies are required to mitigate the risks that they face, makes for challenging research questions in the field of risk management. The challenge that companies face today is not only to identify the types of risks that they face, but also to assess the indicators of risk that face them. This will allow them to mitigate that risk before any disruption to the supply chain occurs. The use of social network theory can aid in the identification of disruption risk. This thesis proposes the combination of social networks, behavioural risk indicators and information management, to uniquely identify disruption risk. The propositions that were developed from the literature review and exploratory case study in the aerospace OEM, in this thesis are:- By improving information flows, through the use of social networks, we can identify supply chain disruption risk. - The management of information to identify supply chain disruption risk can be explored using push and pull concepts. The propositions were further explored through four focus group sessions, two within the OEM and two within an academic setting. The literature review conducted by the researcher did not find any studies that have evaluated supply chain disruption risk management in terms of social network analysis or information management studies. The evaluation of SCRM using these methods is thought to be a unique way of understanding the issues in SCRM that practitioners face today in the aerospace industry.
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Purpose – The purpose of this paper is to constructively discuss the meaning and nature of (theoretical) contribution in accounting research, as represented by Lukka and Vinnari (2014) (hereafter referred to as LV). The authors aim is to further encourage debate on what constitutes management accounting theory (or theories) and how to modestly clarify contributions to the extant literature. Design/methodology/approach – The approach the authors take can be seen as (a)n interdisciplinary literature sourced analysis and critique of the movement’s positioning and trajectory” (Parker and Guthrie, 2014, p. 1218). The paper also draws upon and synthesizes the present authors and other’s contributions to accounting research using actor network theory. Findings – While a distinction between domain and methods theories … may appear analytically viable, it may be virtually impossible to separate them in practice. In line with Armstrong (2008), the authors cast a measure of doubt on the quest to significantly extend theoretical contributions from accounting research. Research limitations/implications – Rather than making (apparently) grandiose claims about (theoretical) contributions from individual studies, the authors suggest making more modest claims from the research. The authors try to provide a more appropriate and realistic approach to the appreciation of research contributions. Originality/value – The authors contribute to the debate on how theoretical contributions can be made in the accounting literature by constructively debating some views that have recently been outlined by LV. The aim is to provide some perspective on the usefulness of the criteria suggested by these authors. The authors also suggest and highlight (alternative) ways in which contributions might be discerned and clarified.
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This work aimed to analyze the so called June Journeys which happened in Brazil in 2013, in an effort to establish a proper ontology for cyberspace that goes beyond old dichotomies that put men and techniques in polar opposites, making difficult to perform a constructive – and not merely pessimist – analysis of the crossroads between politics and technology. This analysis uses as basis and methodological guidance the Theory of Actor-Network (ANT or TAR) widely used in social studies of science and technology to overcome these dichotomies and allow the analysis of networks, so that is clear the political instability that arises in this context which profoundly changes the political game.
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This paper examines how the introduction and use of a new information system affects and is affected by the values of a diverse professional workforce. It uses the example of lecture capture systems in a university. Its contribution is to combine two concepts taken from actor-network theory, namely accumulation and inscription, and combine them with an integrated framework of diversity management. A model is developed of accumulation cycles in lecture capture usage, involving multiple interacting actants, including the broader environment, management commitment to diversity, work group characteristics, individual practices and the affordances of technology. Using this model, alternative future inscriptions can be identified - an optimal one, which enhances professional values, as a result of a virtuous accumulation cycle, or a sub-optimal one, as a result of a vicious cycle. It identifies diversity management as an important influence on how professional values are enhanced, modified or destroyed.
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This paper argues that children and childhood constitute a ‘white space’ in organization studies, which should now be explored, mapped and analysed. Rather than being separate, children and organization are deeply implicated in one another, which provides a rich basis for theoretical inquiry. The paper draws on Spivak’s concept of the subaltern and on actor-network theory to articulate how and where organization studies might critically engage with, and find a place for, children and childhood. It frames such an inquiry around six potential research trajectories: epistemological, methodological, ontological, temporal, political and reflexive.
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Complexity science is the multidisciplinary study of complex systems. Its marked network orientation lends itself well to transport contexts. Key features of complexity science are introduced and defined, with a specific focus on the application to air traffic management. An overview of complex network theory is presented, with examples of its corresponding metrics and multiple scales. Complexity science is starting to make important contributions to performance assessment and system design: selected, applied air traffic management case studies are explored. The important contexts of uncertainty, resilience and emergent behaviour are discussed, with future research priorities summarised.
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The UK construction industry is notorious for the sheer amount of disputes which are likely to arise on each building and engineering project. Despite numerous creative attempts at “dispute avoidance” and “dispute resolution”, this industry is still plagued with these costly disputes. Whilst both academic literature and professional practices have investigated the causes of disputes and the mechanisms for avoidance/resolution of these disputes, neither has studied in any detail the nature of the construction disputes and why they develop as they do once a construction lawyer is engaged. Accordingly, this research explores the question of what influences the outcome of a construction dispute and to what extent do construction lawyers control or direct this outcome? The research approach was ethnographic. Fieldwork took place at a leading construction law firm in London over 18 months. The primary focus was participant observation in all of the firm’s activities. In addition, a database was compiled from the firm’s files and archives, thus providing information for quantitative analysis. The basis of the theoretical framework, and indeed the research method, was the Actor‐Network Theory (ANT). As such, this research viewed a dispute as a set of associations – an entity which takes form and acquires its attributes as a result of its relations with other entities. This viewpoint is aligned with relational contract theories, which in turn provides a unified platform for exploring the disputes. The research investigated the entities and events which appeared to influence the dispute’s identity, shape and outcome. With regard to a dispute’s trajectory, the research took as its starting point that a dispute follows the transformation of “naming, blaming, claiming…”, as identified by Felstiner, Abel and Sarat in 1980. The research found that construction disputes generally materialise and develop prior to any one of the parties approaching a lawyer. Once the lawyer is engaged, we see the reverse of the trajectory “naming, blaming, claiming…” this being: “claiming, blaming, naming…” The lawyers’ role is to identify or name (or rename) the dispute in the best possible light for their client in order to achieve the desired outcome – the development of which is akin to the design process. The transformation of a dispute and the reverse trajectory is by no means linear, but rather, iterative and spatial as it requires alliances, dependencies and contingencies to assemble and take the shape it does. The research concludes that construction disputes are rarely ever completely “resolved” as such. Whilst an independent third party may hand down a judgment, or the parties may reach a settlement agreement, this state is only temporal. Some construction disputes dissipate whist others reach a state of hibernation for a period of time only to pick up momentum and energy some years later. Accordingly, this research suggests that the concept of “dispute resolution” does not exist in the UK construction industry. The ultimate goal should be for parties to reach this ultimate and perpetual state of equilibrium as quickly and as cost effectively as possible: “dispute dissolution”, the slowing down of the dispute’s momentum. Rather than focusing on the design and assemblage of the dispute, the lawyers’ role therein is, or should be, to assist with the “disassembling” of the dispute.
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Complex network theory is a framework increasingly used in the study of air transport networks, thanks to its ability to describe the structures created by networks of flights, and their influence in dynamical processes such as delay propagation. While many works consider only a fraction of the network, created by major airports or airlines, for example, it is not clear if and how such sampling process bias the observed structures and processes. In this contribution, we tackle this problem by studying how some observed topological metrics depend on the way the network is reconstructed, i.e. on the rules used to sample nodes and connections. Both structural and simple dynamical properties are considered, for eight major air networks and different source datasets. Results indicate that using a subset of airports strongly distorts our perception of the network, even when just small ones are discarded; at the same time, considering a subset of airlines yields a better and more stable representation. This allows us to provide some general guidelines on the way airports and connections should be sampled.
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The paper reports on a study of design studio culture from a student perspective. Learning in design studio culture has been theorised variously as a signature pedagogy emulating professional practice models, as a community of practice and as a form of problem-based learning, all largely based on the study of teaching events in studio. The focus of this research has extended beyond formally recognized activities to encompass the student’s experience of their social and community networks, working places and study set-ups, to examine how these have contributed to studio culture and how there have been supported by studio teaching. Semi-structured interviews with final year undergraduate students of architecture formed the basis of the study using an interpretivist approach informed by Actor-network theory, with studio culture featured as the focal actor, enrolling students and engaging with other actors, together constituting an actor-network of studio culture. The other actors included social community patterns and activities; the numerous working spaces (including but not limited to the studio space itself); the equipment, tools of trade and material pre-requisites for working; the portfolio enrolling the other actors to produce work for it; and the various formal and informal events associated with the course itself. Studio culture is a highly charged social arena: The question is how, and in particular, which aspects of it support learning? Theoretical models of situated learning and communities of practice models have informed the analysis, with Bourdieu’s theory of practice, and his interrelated concepts of habitus, field and capital providing a means of relating individually acquired habits and modes of working to social contexts. Bourdieu’s model of habitus involves the externalisation through the social realm of habits and knowledge previously internalised. It is therefore a useful model for considering whole individual learning activities; shared repertoires and practices located in the social realm. The social milieu of the studio provides a scene for the exercise and display of ‘practicing’ and the accumulation of a form of ‘practicing-capital’. This capital is a property of the social milieu rather than the space, so working or practicing in the company of others (in space and through social media) becomes a more valued aspect of studio than space or facilities alone. This practicing-capital involves the acquisition of a habitus of studio culture, with the transformation of physical practices or habits into social dispositions, acquiring social capital (driving the social milieu) and cultural capital (practicing-knowledge) in the process. The research drew on students’ experiences, and their practicing ‘getting a feel for the game’ by exploring the limits or boundaries of the field of studio culture. The research demonstrated that a notional studio community was in effect a social context for supporting learning; a range of settings to explore and test out newly internalised knowledge, demonstrate or display ideas, modes of thinking and practicing. The study presents a nuanced interpretation of how students relate to a studio culture that involves a notional community, and a developing habitus within a field of practicing that extends beyond teaching scenarios.
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En este artículo se analizan las definiciones aceptadas para el campo científico de la museología concebidas por los teóricos del ICOFOM que primero cuestionaron al “museo” como paradigma. Pretende señalar algunas de las inconsistencias en la museología filosófica strankiana con el fin de reformular el concepto de su objeto de estudio. Este debate requerirá una revisión de dicha perspectiva filosófica a través del punto de vista sociológico, a la luz de la teoría del actor-difusor de la red propuesta por Bruno Latour. Finalmente, el artículo sostiene que la relación hombre-realidad forjada en Occidente como una actuación del museo hegemónico no debería definir el objeto de estudio de la museología. Por el contrario, debería tener en cuenta todo tipo de posibles asociaciones entre las diferentes funciones que se realizan, evolucionando desde un corpus de reflexiones sobre el museo hacia una disciplina museológica reflexiva.
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En este trabajo se discuten los aportes de la teoría sociológica contemporánea al debate filosófico y científico de la ontología, para ello son cotejados los componentes ontológicos de la Teoría General de Sistemas Sociales de Niklas Luhmann, lla Teoría de la Acción Comunicativa de Jürgen Habermas y la Actor-Network Theory de Bruno Latour.
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With the development of information technology, the theory and methodology of complex network has been introduced to the language research, which transforms the system of language in a complex networks composed of nodes and edges for the quantitative analysis about the language structure. The development of dependency grammar provides theoretical support for the construction of a treebank corpus, making possible a statistic analysis of complex networks. This paper introduces the theory and methodology of the complex network and builds dependency syntactic networks based on the treebank of speeches from the EEE-4 oral test. According to the analysis of the overall characteristics of the networks, including the number of edges, the number of the nodes, the average degree, the average path length, the network centrality and the degree distribution, it aims to find in the networks potential difference and similarity between various grades of speaking performance. Through clustering analysis, this research intends to prove the network parameters’ discriminating feature and provide potential reference for scoring speaking performance.
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Communication technologies shape how political activist networks are produced and maintain themselves. In Cuba, despite ideologically and physically oppressive practices by the state, a severe lack of Internet access, and extensive government surveillance, a small network of bloggers and cyberactivists has achieved international visibility and recognition for its critiques of the Cuban government. This qualitative study examines the blogger collective known as Voces Cubanas in Havana, Cuba in 2012, advancing a new approach to the study of transnational activism and the role of technology in the construction of political narrative. Voces Cubanas is analyzed as a network of connections between human and non-human actors that produces and sustains powerful political alliances. Voces Cubanas and its allies work collectively to co-produce contentious political discourses, confronting the dominant ideologies and knowledges produced by the Cuban state. Transnational alliances, the act of translation, and a host of unexpected and improvised technologies play central roles in the production of these narratives, indicating new breed of cyborg sociopolitical action reliant upon fluid and flexible networks and the act of writing.
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La mise en œuvre d’activités de prévention de la consommation de substances psychoactives (SPA) (tabac, alcool et cannabis) en milieu scolaire est une stratégie couramment utilisée pour rejoindre un grand nombre de jeunes. Ces activités s’inspirent, soit de programmes existant, soit d’innovations dictées par le contexte d’implantation ou l’existence de données de recherche. Dans un cas comme dans l’autre, l’évaluation de ces programmes représente la meilleure voie pour mesurer leur efficacité et/ou connaître comment ceux-ci sont implantés. C’est cet impératif qui a motivé une commission scolaire du Québec a recommandé l’évaluation de l’Intervention en Réseau (IR), un programme développé en vue de retarder l’âge d’initiation et de réduire la consommation problématique de SPA chez les élèves. Ce programme adopte une approche novatrice avec pour principal animateur un intervenant pivot (IP) qui assure le suivi des élèves de la 5e année du primaire jusqu’en 3e secondaire. Inspiré des modèles en prévention de la santé et de l’Approche École en santé (AES), le rôle de l’IP ici se démarque de ceux-ci. Certes, il est l’interface entre les différents acteurs impliqués et les élèves mais dans le cadre du programme IR, l’IP est intégré dans les écoles primaires et secondaires qu’il dessert. C’est cet intervenant qui assure la mobilisation des autres acteurs pour la mise en œuvre des activités. Cette thèse vise à rendre compte de ce processus d’évaluation ainsi que des résultats obtenus. L’approche d’évaluation en est une de type participatif et collaboratif avec des données quantitatives et qualitatives recueillies par le biais de questionnaires, d’entrevues, de groupes de discussion, d’un journal de bord et de notes de réunions. Les données ont été analysées dans le cadre de trois articles dont le premier concerne l’étude d’évaluabilité (ÉÉ) du programme. Les participants de cette ÉÉ sont des acteurs-clés du programme (N=13) rencontrés en entrevues. Une analyse documentaire (rapports et journal de bord) a également été effectuée. Cette ÉÉ a permis de clarifier les intentions des initiateurs du programme et les objectifs poursuivis par ces derniers. Elle a également permis de rendre la théorie du programme plus explicite et de développer le modèle logique, deux éléments qui ont facilité les opérations d’évaluation qui ont suivi. Le deuxième article porte sur l’évaluation des processus en utilisant la théorie de l’acteur-réseau (TAR) à travers ses quatre moments du processus de traduction des innovations (la problématisation, l’intéressement, l’enrôlement et la mobilisation des alliés), l’analyse des controverses et du rôle des acteurs humains et non-humains. Après l’analyse des données obtenues par entrevues auprès de 19 informateurs-clés, les résultats montrent que les phases d’implantation du programme passent effectivement par les quatre moments de la TAR, que la gestion des controverses par la négociation et le soutien était nécessaire pour la mobilisation de certains acteurs humains. Cette évaluation des processus a également permis de mettre en évidence le rôle des acteurs non-humains dans le processus d’implantation du programme. Le dernier article concerne une évaluation combinée des effets (volet quantitatif) et des processus (volet qualitatif) du programme. Pour le volet quantitatif, un devis quasi-expérimental a été adopté et les données ont été colligées de façon longitudinale par questionnaires auprès de 901 élèves de 5e et 6e année du primaire et leurs enseignants de 2010 à 2014. L’analyse des données ont montré que le programme n’a pas eu d’effets sur l’accessibilité et les risques perçus, l’usage problématique d’alcool et la polyconsommation (alcool et cannabis) chez les participants. Par contre, les résultats suggèrent que le programme pourrait favoriser la réduction du niveau de consommation et retarder l’âge d’initiation à l’alcool et au cannabis. Ils suggèrent également un effet potentiellement positif du programme sur l’intoxication à l’alcool chez les élèves. Quant au volet qualitatif, il a été réalisé à l’aide d’entrevues avec les intervenants (N=17), de groupes de discussion avec des élèves du secondaire (N=10) et d’une analyse documentaire. Les résultats montrent que le programme bénéficie d’un préjugé favorable de la part des différents acteurs ayant participé à l’évaluation et est bien acceptée par ces derniers. Cependant, le roulement fréquent de personnel et le grand nombre d’écoles à suivre peuvent constituer des obstacles à la bonne marche du programme. En revanche, le leadership et le soutien des directions d’écoles, la collaboration des enseignants, les qualités de l’IP et la flexibilité de la mise en œuvre sont identifiés comme des éléments ayant contribué au succès du programme. Les résultats et leur implication pour les programmes et l’évaluation sont discutés. Enfin, un plan de transfert des connaissances issues de la recherche évaluative est proposé.