Abstract. This paper presents an overview of JAMES, a J a va-based platform of mobile agents that is mainly oriented for the management o f d a t a and telecommunication networks. This platform has been developed on behalf of a Eureka Project !1921 and the project partners are Siemens SA, University of Coimbra and Siemens AG. We describe the main architecture of the platform giving more emphasis to the most important features. To s h o w the e ectiveness of some of the techniques that have been implemented we will present some performance results that compare the JAMES platform with the Aglets Workbench. The main target of our platform is network management and telecommunication applications. In this line, we h a ve done a Java-based implementation of SNMP that has been integrated within the platform. The industrial partners of our project i.e. Siemens S.A. have d e v eloped a prototype application for TMN performance management. Although it is still a prototype it is being used to validate the technological advantages of using mobile agents in the management of telecommunication networks.
In the past few years there has been an enthusiastic interest in mobile agent technology and several platforms have been developed. Some of them have only been used for research purposes while others have been deployed as commercial products. The community is now looking for applications where these platforms can be effectively used. Some comparisons about the functionality of some mobile agent systems have been presented in the literature. However, to the best of our knowledge, there has been no reported study that compares the real performance of the platforms.In this paper, we present the first results of an experimental study that compares the performance of eight Java-based Mobile Agent systems: Aglets, Concordia, Voyager, Odyssey, Jumping Beans, Grasshopper, Swarm and James. This study presents some insights about the performance and the robustness of each platform. ᭧
In the past few years there has been an enthusiastic interest in mobile agent technology and several platforms have been developed. There are some comparisons in the literature about the functionality of some mobile agent systems. However, none of those studies includes a direct comparison between the performance of the platforms. In this paper, we present the results of an experimental study where we compare the performance of eight Java-based Mobile Agent systems: Aglets, Concordia, Voyager, Odyssey, Jumping Beans, Grasshopper, Swarm and JAMES. This study presents some insights about the performance and the robustness of each platform.
Mobile agents are a promising model for distributed computing and has been exploited in several areas of applications. One of those areas that may benefit from the use of mobile agent technology is parallel processing. This paper describes a Java-based platform that provides some support for parallel computing. We have implemented a special module to support the well-known Master/Worker model and we have exploited the use of this model in some distributed tasks. We will present some experimental results that compare the Master/Worker model with the usual model of migratory agents. Then, we will also compare the use of mobile agents with other two solutions for parallel processing (e.g. MPI). All the results and techniques that will be presented in this paper were implemented in a mobile agent platform called JAMES but can also be applied to other existing platforms of mobile agents.
SUMÁRIO agudo do miocárdio (IAM), a insuficiência cardíaca e problemas visuais. Sobre as possíveis sequelas, acredita que houve piora da memória, diminuição da acuidade visual, fadiga, mialgia, inapetência e insônia. I2 referiu acreditar que a alimentação desequilibrada, a falta de exercícios físicos e a obesidade, foram os causadores da agudização da HAS. Como consequência referiu o acidente vascular isquêmico (AVI) e como sequelas, estar acamado desde então. I3 referiu acreditar que a alimentação desequilibrada, o tabagismo, a falta de exercícios físicos e a obesidade, resultaram na agudização da HAS. Como consequência referiu o AVI e como sequelas, a diminuição da acuidade auditiva e visual e a dificuldade de locomoção devido a hemiparesia parcial a esquerda. I4 referiu acreditar que a alimentação desequilibrada, a falta de exercícios físicos e a obesidade, resultaram na agudização da HAS. Como consequência referiu o acidente vascular hemorrágico (AVH) e como sequelas, a diminuição da acuidade auditiva. 4.2 O -DADOS OBJETIVOS Os dados objetivos foram realizados a partir do exame físico realizado em cada entrevistado e descritas as alterações encontradas em cada individuo. 4.2.1 SISTEMA NEUROLÓGICO I1 Indivíduo alerta, conciente, orientado em espaço e tempo, pupilas fotorreagentes. Diminuição da acuidade visual . I2 Indivíduo alerta, consciente, orientado no espaço e tempo, pupilas fotorreagentes. Sem aterações perceptíveis durante o exame físico neurológico. I3 Indivíduo alerta, consciente, orientado no espaço e tempo, pupilas fotorreagentes. Acuidade visual e acuidade auditiva diminuídas. I4 Indivíduo alerta, consciente, orientado no espaço e tempo, pupilas fotorreagentes. Acuidade auditiva diminuída. 4.2.2 SISTEMA TEGUMENTAR E LINFÁTICO Ambos os entrevistados I1, I2, I3 e I4, não apresentaram alterações no sistema tegumentar e linfático. Apresentando pele corada, sem sinais de desidratação e lesões. Sensibilidade preservada. Mucosa 7 REFERÊNCIAS BIBLIOGRÁFICAS
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