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Relational Agents: A Critical Review
Robert H. Campbell, Mark N. GrimshawGillian M. Green
The Open Virtual Reality Journal , 2009, DOI: 10.2174/1875323X01001010001]
Abstract: Relationships between people who meet in virtual worlds are common and these relationships can be long term, in some cases lasting a life-time. Although relationships formed in virtual worlds have invited a lot of recent interest, surprisingly little work has been done on developing computer agents and non-player characters that can actively participate in such relationships. The focus of this review is relational agents, agents that can build long term socioemotional relationships with users. In virtual worlds, such agents are just starting to emerge; they are more common in other environments but remain few and far between. This review critically assesses the progress of relational agent development and research since their inception in 2005, proposes new areas of research and considers the potential for their exploitation in virtual worlds.
Care delivery to disabled people: competencies of community health agents
Evanira Rodrigues Maia, Séfora Batista Almeida, Wéllida Rocha Oliveira, Lorita Marlena Freitag Pagliuca
Revista de Enfermagem UFPE On Line , 2009,
Abstract: Objective: to discuss concepts on disability, facilities and difficulties and report on the learning needs of Community Health Agents (CHA) to work with disabled persons in basic care. Methods: this is an exploratory and descriptive research, carried out in Crato-CE, from March to May 2008. Knowledge, previous skills and learning needs were collected from 76 out of 111 CHA who participated in an awareness seminar, using a questionnaire-type registration card. Data were submitted to the content analysis technique. The project was approved by the COMEPE-UFC (245/07). Results: ninety-two percent of the CHA who concluded steps I and II of the Technical Course for Community Health Agents indicate the need for competency development to work with disabled people and their families, related to the concepts of disability, social inclusion, health-disease process, biomedical contents, health promotion and problem monitoring actions. Conclusion: adequate care delivery to disabled people demands that health professionals develop competencies for this purpose. Community Health Agents’ position turns them into essential actors of these actions in Basic Care. There is an urgent need to develop the competencies established in the curriculum framework of the Technical Course for Community Health Agents, applied to the theme.
Trust in the CODA model: Opinion Dynamics and the reliability of other agents  [PDF]
André C. R. Martins
Computer Science , 2013, DOI: 10.1016/j.physleta.2013.07.007
Abstract: A model for the joint evolution of opinions and how much the agents trust each other is presented. The model is built using the framework of the Continuous Opinions and Discrete Actions (CODA) model. Instead of a fixed probability that the other agents will decide in the favor of the best choice, each agent considers that other agents might be one one of two types: trustworthy or useless. Trustworthy agents are considered more likely to be right than wrong, while the opposite holds for useless ones. Together with the opinion about the discussed issue, each agent also updates that probability for each one of the other agents it interacts withe probability each one it interacts with is of one type or the other. The dynamics of opinions and the evolution of the trust between the agents are studied. Clear evidences of the existence of two phases, one where strong polarization is observed and the other where a clear division is permanent and reinforced are observed. The transition seems signs of being a first-order transition, with a location dependent on both the parameters of the model and the initial conditions. This happens despite the fact that the trust network evolves much slower than the opinion on the central issue.
Securing Mobile Agents in MANET against Attacks using Trust
Chandreyee Chowdhury,Sarmistha Neogy
International Journal of Network Security & Its Applications , 2011,
Abstract: The emerging trend of using mobile agents for mobile adhoc network (MANET) applications intensifies the need for protecting them. Here we propose a distributed trust based framework to protect both the agents and the host platforms (running at the nodes) especially against threats of the underlying environment where agents may get killed or rerouted by visiting hosts. The best way to defend against this situation is to prevent both the hosts and agents from communicating with the malicious ones. In this regard this paper develops a distributed reputation model of MANET using concepts from DempsterShafer theory. The agents (deployed for some purposes like service discovery) while roaming in the networkwork collaboratively with the hosts they visit to form a consistent trust view of MANET. An agent may exchange information about suspected nodes with a visiting host. To speed up convergence, information about an unknown node can be solicited from trusted neighborhood. Thus an inactive node, without deploying agents may also get a partial view of the network. The agents can use combination ofencryption and digital signature to provide privacy and authentication services. Node mobility and theeffect of environmental noise are considered. The results show the robustness of our proposed scheme even in bigger networks.
IS THERE TRUST OR NOT?  [PDF]
MARINA LUMINITA SARBOVAN
Anale : Seria ?tiin?e Economice. Timi?oara , 2012,
Abstract: To rely or not on the state actions is in European Union an even greater challenge than before, because the national authority itself is a part of a larger evolving economic system, clearly regulated but unpredictable when put to work. We all wish more, cheaper and better merchandise to purchase, a cleaner and safer environment, leaving the safeguarding of the macroeconomic stability, as a fundamental condition for all these, to the state. Trust should be that situation when the citizens’ expectations regarding the macroeconomic decisions were fulfilled. Remains an issue how to make trust function when the authorities were assumed to take into account the interest of all voters, but they fail to raise employment, to increase incomes, and GINI index grows.
Os Antecedentes da Confian a e do Compromisso Relacional The Antecedents of Trust and Relational Commitment Los Antecedentes de la Confianza y del Compromiso Relacional
MARQUES, Alzira,COELHO, Arnaldo
Revista Brasileira de Gest?o de Negócios , 2004,
Abstract: RESUMO No ambito do marketing relacional, especialmente das rela es cliente-fornecedor, a confian a e o compromisso têm sido alvos de inúmeros estudos de natureza conceptual e empírica. Todavia, esses estudos, regra geral, têm como unidade de análise os clientes e, se nessa perspectiva se conhecem razoavelmente os determinantes da confian a e do compromisso, na perspectiva do fornecedor pouco se sabe sobre o assunto. Por isso, no sentido de colmatar essa lacuna, este estudo visa averiguar se a confian a dos fornecedores nos clientes e o valor relacional influenciam o compromisso, avaliado em termos da continuidade do relacionamento. Assim, com base numa amostra de 192 empresas industriais privadas portuguesas, verificou-se que somente a confian a nos clientes tem um efeito directo no compromisso, explicando 31,5% da sua varia o. O valor relacional explica 19,4% da varia o da confian a na integridade e fiabilidade dos clientes, pelo que é provável que indiretamente influencie o compromisso. ABSTRACT In the relationship marketing field, especially on the buyer-seller relationship, the commitment has been object of an impressive body of literature, on both conceptual and empirical way. However, most of it is focused on customer behavior and little attention has been given to the seller perspective about trust and commitment. Based on a sample of 192 private Portuguese companies, this study aims to show the impact of trust and relational value on commitment, evaluated in terms of continuity of the relation. Results show that only trust has a direct effect on commitment, explaining 31,5% of its variance. Relational value explains 19,4% of the variance of trust in the customers’ integrity and reliability , so it can influence commitment in an indirect way. RESUMEN En el ámbito del marketing relacional, especialmente de las relaciones cliente- proveedor, la confianza y el compromiso han sido objeto de numerosos estudios de naturaleza conceptual y empírica. En general en estos estudios, la unidad de análisis son los clientes y si desde esa perspectiva, se conocen razonablemente los determinantes de la confianza y del compromiso, desde la perspectiva del proveedor poco se sabe sobre el tema. Por eso, este estudio tiene el propósito de averiguar si la confianza de los proveedores en los clientes y el valor relacional influyen en el compromiso, evaluado en términos de continuidad de la relación. Así, basado en un muestreo de 192 empresas industriales portuguesas privadas, se verificó que solamente la confianza en los clientes tiene un efecto directo en el compr
Trust Enhanced Data Security in Free Roaming Mobile agents Using Symmetric Key cryptography  [PDF]
G.Geetha,C.Jayakumar
International Journal of Network Security & Its Applications , 2011,
Abstract: Mobile agents are emerging as useful paradigm in electronic commerce, forboth wired and wireless environments Mobile agents are software programs that live incomputer networks, performing their computations and moving from host to host asnecessary to fulfill user goals.. In this research work, both chain relation and TTP (trustedhost) has used for protecting data of free roaming mobile agents. We use TTP informationwith a host which is called Knowledge Based System (KBS) to maintain Trusted hostInformation. Agent delight at trusted Host as agent originator by means of symmetric keyencryption. By using chain relation with trusted host, redundancy will be reduced andefficiency will be improved.
Core Competencies Of A Call Centre AgentCore Competencies Of A Call Centre Agent  [cached]
Christine White,Vera Roos
South African Journal of Human Resource Management , 2005, DOI: 10.4102/sajhrm.v3i2.63
Abstract: Call centre agents are becoming increasingly important in the call centre context. They act as a contact point between the customer and the company. Call centre agents should have certain competencies to perform their duties sufficiently. Identifying competencies, required to be effective agents, will ease the task of training and recruitment. Due to the interrelatedness of the call centre agent, the management of a call centre and customers, all relevant role players’ perceptions were taken into account. By using qualitative analysis to analyse the data, various competencies needed to function effectively in a call centre were identified.
Trust Maintenance and Trust Repair  [PDF]
Liangtie Dai, Yujie Wu
Psychology (PSYCH) , 2015, DOI: 10.4236/psych.2015.66075
Abstract: As an important social capital, construction and development of initial trust have been paid much attention. Trust violation, as a significant phenomenon, also begins to absorb many concerns. Studies of trust repair started late, and focused on sociology for analyzing trust crises during the social transition period in China, but seldom cared about individual and organizational levels. This paper, based on perspective of psychology, summarizes the definition, theoretical foundation and integrative model of trust, and discusses the trust violation, repair processes, repair strategies, the attribution model and dynamic bilateral model of trust repair, providing convenience for research in the individual or organizational level of trust repair.
Belief Revision and Trust  [PDF]
Aaron Hunter
Computer Science , 2014,
Abstract: Belief revision is the process in which an agent incorporates a new piece of information together with a pre-existing set of beliefs. When the new information comes in the form of a report from another agent, then it is clear that we must first determine whether or not that agent should be trusted. In this paper, we provide a formal approach to modeling trust as a pre-processing step before belief revision. We emphasize that trust is not simply a relation between agents; the trust that one agent has in another is often restricted to a particular domain of expertise. We demonstrate that this form of trust can be captured by associating a state-partition with each agent, then relativizing all reports to this state partition before performing belief revision. In this manner, we incorporate only the part of a report that falls under the perceived domain of expertise of the reporting agent. Unfortunately, state partitions based on expertise do not allow us to compare the relative strength of trust held with respect to different agents. To address this problem, we introduce pseudometrics over states to represent differing degrees of trust. This allows us to incorporate simultaneous reports from multiple agents in a way that ensures the most trusted reports will be believed.
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