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Um modelo de simulação baseado em agentes para análise de cadeias de suprimento

Ferreira, Luciano
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Tese de Doutorado Formato: application/pdf
POR
Relevância na Pesquisa
26.33%
Uma cadeia de suprimentos é uma rede composta por fornecedores, plantas de manufatura, depósitos, centros de distribuição e varejistas através da qual matériasprimas são adquiridas, transformadas e entregue aos consumidores. A gestão de cadeias de suprimentos (do inglês, Supply Chain Management - SCM) envolve a tomada de decisão nos níveis estratégico, tático e operacional, cujo objetivo é otimizar o desempenho da cadeia . O desenvolvimento de modelos para a avaliação de cadeias de suprimento é uma boa alternativa para estudar a gestão da demanda por produtos, bem como para analisar a efetividade de políticas de gerenciamento. Sistemas multiagentes são apropriados para estudar cadeias de suprimento, pois as diferentes unidades de negócio envolvidas podem ser modeladas como agentes autônomos, assim como suas regras de gerenciamento. Além disso, a modelagem do fluxo de produtos e do fluxo de informações, tais como volume de pedidos e prazos de entrega de um elo da cadeia para outro é facilitada. A análise da literatura especializada da área demonstra que a maior parte dos estudos procura resolver problemas específicos e sem considerar agentes normativos interferindo no comportamento individual de cada ator da cadeia. Este trabalho procura contribuir com o estado da arte da área de gestão de cadeias de suprimento da seguinte forma: (1) propondo um modelo de simulação...

Modelo MAS-SOC : integrando ambientes e organizações para simulações baseadas em sistemas multiagentes situados; MAS-SOC model: integrating environments and organisations to simulations based on situated multiagent systems

Okuyama, Fabio Yoshimitsu
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Tese de Doutorado Formato: application/pdf
POR
Relevância na Pesquisa
26.49%
Este trabalho encontra-se situado na área de Inteligência Artificial, mais especificamente na modelagem de Sistemas Multiagentes destinados à simulação social. A área de pesquisa de simulação social baseada em agentes é uma área recente e bastante promissora. Por tratar de problemas extremamente complexos, existe a necessidade de criar modelos e abstrações para possibilitar sua realização. Dando continuidade a trabalhos anteriores, esta tese pretende consolidar uma nova versão do modelo MAS-SOC, destinado à definição de simulações sociais baseada em Sistemas Multiagentes Situados, com organizações que funcionam em ambientes determinados (organizações situadas). É proposta uma abordagem integrada, que conecta de maneira forte as entidades agentes, organizações e ambiente, sendo os agentes, o ambiente e as estruturas da organização tratadas como entidades de primeira ordem. A definição do ambiente é feita através da linguagem ELMS, estendida com uma infraestrutura normativa. Esta infraestrutura normativa é composta basicamente por objetos normativos e espaços normativos que permitem a distribuição espacial da informação normativa no ambiente, possibilitando a contextualização das normas que os agentes devem seguir em um escopo espacial determinado. A contextualização das normas facilita a sua operacionalização e a verificação de conformidade...

OrIAs : uma infraestrutura de nível micro-organizacional baseada em artefatos para sistemas multiagentes; OrIAs : an artifact-based micro-organizational level infrastruture for multiagent systems

Thomasi, Camila Dasso
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Dissertação Formato: application/pdf
POR
Relevância na Pesquisa
26.19%
Neste trabalho é apresentada uma infraestrutura de nível micro-organizacional para sistemas multiagentes. A infraestrutura permite definir e gerenciar papéis e grupos de papéis organizacionais, que caracterizam o nível micro-organizacional das sociedades de agentes, em termos de quatro dimensões organizacionais: estrutural, funcional, dialógica e normativa. As principais características micro-organizacionais suportadas pela infraestrutura são: definição de papéis em termos de objetivos de realização (achievement goals) e objetivos de manutenção (maintenance goals), e seus respectivos planos; definição de normas organizacionais e um mecanismo para imposição das normas (norm enforcement); relações de dependências organizacionais entre papéis e grupos de papéis; mecanismo de reputação para auxiliar os agentes na busca de parceiros para seus objetivos individuais e selecionar parceiros para atingir metas coletivas; processo de reorganização não institucionalizado realizado por iniciativa dos agentes. A infraestrutura é baseada no metamodelo de agentes e artefatos e no conceito de organizações incorporadas (embodied organizations). Como resultado deste trabalho é disponibilizada uma infraestrutura de gerenciamento organizacional...

Norm Defeasibility in an Institutional Normative Framework

cardoso, hl; oliveira, e
Fonte: Universidade do Porto Publicador: Universidade do Porto
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
26.29%
Non-native environments have been proposed to regulate agent interaction in open multi-agent systems. However, most approaches rely on pre-imposed regulations that agents are subject to. Taking a different stance, we focus on a normative framework that assists agents in establishing by themselves their own commitment norms. With that aim in mind, a model of norm defeasibility is presented that enables exploiting and adapting a normative background to different extents. We formalize the normative state using first-order logic and define rules and norms operating on that state. A suitable semantics regarding the use of norms within a hierarchical context structure is given, based on norm activation conflict and defeasibility.

Adaptive Deterrence Sanctions in a Normative Framework

cardoso, hl; oliveira, e
Fonte: Universidade do Porto Publicador: Universidade do Porto
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
26.42%
Normative environments are used to regulate multi-agent interactions. In business encounters, agents representing business entities make contracts including norms that prescribe what agents should do. Agent autonomy, however, gives agents the ability to decide whether they fulfill or violate their commitments. In this paper we present an adaptive mechanism that enables a normative framework to change deterrence sanctions according to an agent population, in order to preclude agents from exploiting potential normative flaws. The system tries to avoid institutional control beyond what is strictly necessary, seeking to maximize agent contracting activity while ensuring a certain commitment compliance level, when agents have unknown risk and social attitudes.

Virtual organization support through electronic institutions and normative multi-agent systems

Henrique Lopes Cardoso; Ana Paula Rocha; Eugénio Oliveira
Fonte: Universidade do Porto Publicador: Universidade do Porto
Tipo: Parte de Livro
ENG
Relevância na Pesquisa
26.11%
The multi-agent system (MAS) paradigm has become a prominent approach in distributed artificial intelligence. Many real-world applications of MAS require ensuring cooperative outcomes in scenarios populated with self-interested agents. Following this concern, a strong research emphasis has been given recently to normative MAS. A major application area of MAS technology is e-business automation, including the establishment and operation of business relationships and the formation of virtual organizations (VOs). One of the key factors influencing the adoption of agent-based approaches in real-world business scenarios is trust. The concept of an electronic institution (EI) has been proposed as a means to provide a regulated and trustable environment, by enforcing norms of behavior and by providing specific services for smooth inter-operability. This chapter exposes our work towards the development of an agent-based EI providing a virtual normative environment that assists and regulates the creation and operation of VOs through contract-related services. It includes a presentation of the EI framework, knowledge representation structures for norms in contracts, and a description of two main institutional services, namely negotiation mediation and contract monitoring.

Proceedings of the 2014 Workshop on Intelligent Agents and Technologies for Socially Interconnected Systems

Fonte: Universidade do Porto Publicador: Universidade do Porto
Tipo: Atas ou Anais
ENG
Relevância na Pesquisa
26.26%
IAT4SIS workshop will provide a space for the discussion on Artificial Intelligence driven concepts and recent developments on Agent-based techniques dealing with interoperability issues in socially interconnected systems. These issues mainly refer to complementary perspectives on interaction, coordination, negotiation, regulation and trust.A wide variety of electronic business scenarios and systems, including enterprises networking, as well as agent-based approaches to this subject, have been proposed in recent years. The primary goal of this workshop is to bring together the most recent and innovative scientific research from a diversity of fields as Computer Science, Artificial Intelligence and Distributed Systems that focus on modelling, implementation, monitoring and evaluation of computational agents for interconnected systems, namely in e-business operations.In the context of IAT4SIS workshop, we want to present and discuss promising new work towards the development of advanced methodologies and tools related to agents and multi-agent systems that: support the interaction and collaboration between heterogeneous business agent entities (providing advanced services like negotiation, argumentation, e- contracting, ontology facilities...

Educative practice of community health agents analyzed through the category of praxis

Trapé,Carla Andrea; Soares,Cássia Baldini
Fonte: Escola de Enfermagem de Ribeirão Preto / Universidade de São Paulo Publicador: Escola de Enfermagem de Ribeirão Preto / Universidade de São Paulo
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/02/2007 EN
Relevância na Pesquisa
26.04%
This study aimed to: analyze the conceptions of health education that guide educational practices of community health agents in the Family Health Program of the Butantã Health Coordination, São Paulo, Brazil, and analyze the character of these educational activities. Data were collected through focus groups and in-depth semi-structured interviews with 39 agents. The analysis procedures followed the recommendations of thematic content analysis, and praxis was the analytical category. Regarding theoretical activity as a component of praxis, we found that most health education conceptions were based on the transmission of normative information learned from health technicians. This theoretical activity ended up guiding a practical activity typical of repetitive praxis, in which the agents do not participate in the health work planning process and do not dominate the "ideal object", reproducing tasks planned by others.

Normative and strategic analysis of claims problems and probabilistic assignment of indivisible goods

Kasajima, Yoichi (1978 - ); Thomson, William (1949 - )
Fonte: University of Rochester. Publicador: University of Rochester.
Tipo: Tese de Doutorado Formato: Number of Pages:xii, 96 leaves
ENG
Relevância na Pesquisa
26.23%
Thesis (Ph. D.)--University of Rochester. Dept. of Economics, 2010.; This thesis is a collection of essays on normative and strategic analysis of economic problems, such as the adjudication of conflicting claims and the probabilistic assignment of indivisible goods. In Chapters 1 and 2, we consider the problem of dividing a resource among a group of agents who have conflicting claims on it. A rule is a function that associates with each problem an awards vector for it. In our search for the “best” rule, we follow the axiomatic approach. Our first and central two axioms, “inequality preservation in gains” and “inequality preservation in losses,” pertain to the class of “distributional” properties of rules. Such properties have been the object of much attention in recent literature. Our two requirements are that inequalities in claims, under the Lorenz criterion, be reflected in awards and losses. We study the implications of these two axioms in the presence of three basic additional axioms: “order preservation in gains,” “order preservation in losses,” and “continuity.” Chapter 1 analyzes the case when there are more than three agents. We show that these axioms single out the proportional rule. Chapter 2 analyzes the case when there are three agents. We show that there are infinitely many rules...

Beyond cosmopolitanism: towards a non-ideal account of transnational justice

CHWASZCZA, Christine
Fonte: Instituto Universitário Europeu Publicador: Instituto Universitário Europeu
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
26.04%
Cosmopolitanism in normative theory of transnational justice is often characterized by the thesis that the moral and legal status of states must be entirely derived from the moral status of the individuals who constitute them. Although the thesis itself is rather indeterminate in substantive and analytical content, it is generally understood as the claim that states should not be granted the status of moral and legal agents sui generis. This article argues that such a view is analytically and methodologically misleading, and that any fruitful approach towards a liberal theory of transnational justice must face the challenge of coming up with a more complex concept of statehood, and acknowledge that in international relations and international law states are collective moral agents in their own right that can be addressees of genuinely collective forms responsibility. The argument starts with a critical examinations of two common interpretations of the cosmopolitan thesis, a reductivist reading, which suggests that we can reduce the moral and legal status of states to the rights and duties of the individuals (section I), and a methodological reading, which suggests that the moral status of individuals must based on the acknowledgment of “universal” individual rights (section II). For different reasons...

Intentional Compliance with Normative Systems

SARTOR, Giovanni
Fonte: Instituto Universitário Europeu Publicador: Instituto Universitário Europeu
Tipo: Trabalho em Andamento Formato: application/pdf; digital
EN
Relevância na Pesquisa
36.38%
I will address a challenge to mentalistic theories of norms, such as that developed by Cristiano Castelfranchi and Rosaria Conte, namely, the existence of large normative systems, which successfully direct people’s thoughts and actions without being, in their entirety, mental contents of individual agents. I will argue that the cognitive attitudes and operations involved in compliance with normative systems are usually different from those involved in complying with isolated social norms. While isolated norms must be stored in the memory of the agents endorsing them, this does not happen with regard to large normative systems. In the latter case, the agent adopts a general policy-based intention to comply with the normative system as a whole, an intention that provides an abstract motivation for specific acts of compliance, once the agent has established that these acts are obligatory according the system. I will show how the endorsement of such a policy can be based on different individual attitudes, ranging from self-interest to altruistic, social or moral motivations. Finally, I will analyse how a normative system may both constrain powers and extend them, relying on this abstract motivation of its addressees.

Intentional compliance with normative systems

SARTOR, Giovanni
Fonte: Instituto Universitário Europeu Publicador: Instituto Universitário Europeu
Tipo: Parte de Livro
EN
Relevância na Pesquisa
26.36%
I will address a challenge to mentalistic theories of norms, such as that developed by Cristiano Castelfranchi and Rosaria Conte, namely, the existence of large normative systems, which successfully direct people’s thoughts and actions without being, in their entirety, mental contents of individual agents. I will argue that the cognitive attitudes and operations involved in compliance with normative systems are usually different from those involved in complying with isolated social norms. While isolated norms must be stored in the memory of the agents endorsing them, this does not happen with regard to large normative systems. In the latter case, the agent adopts a general policy-based intention to comply with the normative system as a whole, an intention that provides an abstract motivation for specific acts of compliance, once the agent has established that these acts are obligatory according the system. I will show how the endorsement of such a policy can be based on different individual attitudes, ranging from self-interest to altruistic, social or moral motivations. Finally, I will analyze how a normative system may both constrain powers and extend them, relying on this abstract motivation of its addressees.; (Revised version of EUI LAW WP 2012/27.)

AI approaches to the complexity of legal systems : models and ethical challenges for legal systems, legal language and legal ontologies, argumentation and software agents

Fonte: Springer Publicador: Springer
Tipo: Livro
EN
Relevância na Pesquisa
26.23%
International Workshop AICOL-III, Held as Part of the 25th IVR Congress, Frankfurt am Main, Germany, August 15-16, 2011. Revised Selected Papers; The inspiring idea of this workshop series, Artificial Intelligence Approaches to the Complexity of Legal Systems (AICOL), is to develop models of legal knowledge concerning organization, structure, and content in order to promote mutual understanding and communication between different systems and cultures. Complexity and complex systems describe recent developments in AI and law, legal theory, argumentation, the Semantic Web, and multi-agent systems. Multisystem and multilingual ontologies provide an important opportunity to integrate different trends of research in AI and law, including comparative legal studies. Complexity theory, graph theory, game theory, and any other contributions from the mathematical disciplines can help both to formalize the dynamics of legal systems and to capture relations among norms. Cognitive science can help the modeling of legal ontology by taking into account not only the formal features of law but also social behaviour, psychology, and cultural factors. This book is thus meant to support scholars in different areas of science in sharing knowledge and methodological approaches. This volume collects the contributions to the workshop's third edition...

A Review of Norms and Normative Multiagent Systems

Mahmoud, Moamin A.; Ahmad, Mohd Sharifuddin; Mohd Yusoff, Mohd Zaliman; Mustapha, Aida
Fonte: Hindawi Publishing Corporation Publicador: Hindawi Publishing Corporation
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
26.4%
Norms and normative multiagent systems have become the subjects of interest for many researchers. Such interest is caused by the need for agents to exploit the norms in enhancing their performance in a community. The term norm is used to characterize the behaviours of community members. The concept of normative multiagent systems is used to facilitate collaboration and coordination among social groups of agents. Many researches have been conducted on norms that investigate the fundamental concepts, definitions, classification, and types of norms and normative multiagent systems including normative architectures and normative processes. However, very few researches have been found to comprehensively study and analyze the literature in advancing the current state of norms and normative multiagent systems. Consequently, this paper attempts to present the current state of research on norms and normative multiagent systems and propose a norm's life cycle model based on the review of the literature. Subsequently, this paper highlights the significant areas for future work.

BDI reasoning with normative considerations

Felipe Rech Meneguzzi; RODRIGUES, ODINALDO; Oren, Nir; VASCONCELOS, WAMBERTO W.; Luck, Michael
Fonte: Pontifícia Universidade Católica do Rio Grande do Sul Publicador: Pontifícia Universidade Católica do Rio Grande do Sul
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
36.19%

Justificatory and Explanatory Argumentation for Committing Agents

Letia, Ioan Alfred; Groza, Adrian
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 13/04/2013
Relevância na Pesquisa
26.19%
In the interaction between agents we can have an explicative discourse, when communicating preferences or intentions, and a normative discourse, when considering normative knowledge. For justifying their actions our agents are endowed with a Justification and Explanation Logic (JEL), capable to cover both the justification for their commitments and explanations why they had to act in that way, due to the current situation in the environment. Social commitments are used to formalise justificatory and explanatory patterns. The combination of ex- planation, justification, and commitments

Intelligent generation and control of interactive virtual worlds

Trescak, Tomás
Fonte: [Barcelona] : Universitat Autònoma de Barcelona, Publicador: [Barcelona] : Universitat Autònoma de Barcelona,
Tipo: Tesis i dissertacions electròniques; info:eu-repo/semantics/doctoralThesis Formato: application/pdf
Publicado em //2013 ENG; ENG
Relevância na Pesquisa
26.47%
Esta tesis aboga por el uso de los mundos virtuales como una tecnología de futuro en el dominio de los mundos virtuales serios, en particular en aplicaciones e-­‐* (e-­‐learning, e-­‐commerce, e-­‐ government) y en simulaciones sociales. En estas aplicaciones, el entorno virtual 3D está poblado por un gran número de habitantes que pueden ser humanos o avatares controlados por agentes virtuales inteligentes que se involucran en interacciones complejas con su entorno y con los demás participantes. Un problema importante que impide la adopción generalizada de la tecnología de mundos virtuales en estos dominios es que, en general, los mundos virtuales son difíciles de construir y se tiene que emplear un gran esfuerzo en el diseño del entorno virtual 3D y en la programación de los agentes virtuales; pero es aún más difícil asegurar la validez de las interacciones de forma que se prevengan comportamientos no permitidos. Para abordar este problema, hemos desarrollado una solución integral que automatiza el diseño de estos mundos virtuales y de su población. Nuestro enfoque se basa en la utilización de las instituciones virtuales, que son mundos virtuales que regulan las interacciones de sus participantes. El enfoque principal de esta tesis está en explicar cómo los métodos existentes de especificación formal de las instituciones virtuales se pueden extender para traducir automáticamente la especificación institucional en un entorno interactivo 3D utilizando el enfoque de las gramáticas de formas (Shape Grammars) y para poblar...

Rational limits to discretionary powers regarding the admission of public agents; Aspectos racionais limitantes de suposta discricionariedade administrativa à admissão no serviço público ante os princípios e valores fundamentais

Oliveira, Flavio Antonio de
Fonte: Universidade de São Paulo. Faculdade de Direito de Ribeirão Preto Publicador: Universidade de São Paulo. Faculdade de Direito de Ribeirão Preto
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Formato: application/pdf
Publicado em 07/04/2014 POR
Relevância na Pesquisa
36.01%
This article aims to defend the legitimacy of the fundamental principles and values, especially expropriating the legality, morality, reasonableness and proportionality as rational criteria to cope with the administrative-technical expert examination in certain cases of inadmissibility in public service from the perspective of strict infra-legal norms without a normative systematic look to ensure the fundamental rights of the winner and named in a public contest over the administrative act of disability. Thus, the study built with basis in exegesis of legal paternal to the principles of maximum effectiveness of constitutional norms, the reasonableness and proportionality, true vectors interpretive rationalization in the elucidation of the subject.; O presente artigo tem por objetivo defender a legitimidade dos princípios e valores fundamentais, mormente encampando a legalidade, moralidade, razoabilidade e proporcionalidade enquanto critérios racionais para fazer frente à análise técnico-pericial administrativa em certos casos de inadmissão no serviço público sob a ótica estrita de normas infra-legais sem um olhar sistemático normativo que assegure os direitos fundamentais do candidato aprovado e nomeado em concurso público em detrimento do ato administrativo de inaptidão. Para tanto...

THE NORMATIVE STANDING OF GROUP AGENTS

Briggs, Rachael
Fonte: Edinburgh University Press Publicador: Edinburgh University Press
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
26.28%
Christian List and Philip Pettit (henceforth LP) argue that groups of people can be agents � beings that believe, desire and act. Their account combines a non-reductive realist view of group attitudes, on which groups literally have attitudes that cannot be analyzed in terms of the attitudes of their members, with methodological individualism, on which good explanations of group-level phenomena should not posit forces above individual attitudes and behaviors. I then discuss the main normative conclusion that LP draw from the claim that group agents exist: that we ought morally to grant legal rights and responsibilities to group agents, but that group rights should be more limited than individual rights. I argue that when it comes to the ?tness of group agents to bear legal rights and responsibilities, LP can draw support from nonreductionist views elsewhere, particularly in the philosophy of mind. I raise some objections to LP�s views about the value of granting legal rights and responsibilities to group agents

An Operational Approach for Implementing Normative Agents in Urban Wastewater Systems

Nieves,Juan Carlos; Garcia-Gasulla,Dario; Aulinas,Montse; Cortés,Ulises
Fonte: Centro de Investigación en computación, IPN Publicador: Centro de Investigación en computación, IPN
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2012 EN
Relevância na Pesquisa
56.39%
Water quality management policies on a river basin scale are of special importance in order to prevent and/or reduce environmental pollution caused by human sources. Industrial effluents are a priority issue particularly in Urban Wastewater Systems (UWS) that receive mixed household and industrial wastewaters, apart from rainfall water. In this paper, we present an analysis and implementation of normative agents that capture concrete regulations of the Catalan pollution-prevention policies. The implementation of the normative agents is based on Situation Calculus.