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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Fault-tolerance in HLA-based distributed simulations

Eklöf, Martin January 2006 (has links)
<p><i>Successful integration of simulations within the Network-Based Defence (NBD), specifically use of simulations within Command and Control (C2) environments, enforces a number of requirements. Simulations must be reliable and be able to respond in a timely manner. Otherwise the commander will have no confidence in using simulation as a tool. An important aspect of these requirements is the provision of fault-tolerant simulations in which failures are detected and resolved in a consistent manner. Given the distributed nature of many military simulations systems, services for fault-tolerance in distributed simulations are desirable. The main architecture for distributed simulations within the military domain, the High Level Architecture (HLA), does not provide support for development of fault-tolerant simulations.</i></p><p><i>A common approach for fault-tolerance in distributed systems is check-pointing. In this approach, states of the system are persistently stored through-out its operation. In case a failure occurs, the system is restored using a previously saved state. Given the abovementioned shortcomings of the HLA standard this thesis explores development of fault-tolerant mechanisms in the context of the HLA. More specifically, the design, implementation and evaluation of fault-tolerance mechanisms, based on check-pointing, are described and discussed.</i></p>
2

Fault-tolerance in HLA-based distributed simulations

Eklöf, Martin January 2006 (has links)
Successful integration of simulations within the Network-Based Defence (NBD), specifically use of simulations within Command and Control (C2) environments, enforces a number of requirements. Simulations must be reliable and be able to respond in a timely manner. Otherwise the commander will have no confidence in using simulation as a tool. An important aspect of these requirements is the provision of fault-tolerant simulations in which failures are detected and resolved in a consistent manner. Given the distributed nature of many military simulations systems, services for fault-tolerance in distributed simulations are desirable. The main architecture for distributed simulations within the military domain, the High Level Architecture (HLA), does not provide support for development of fault-tolerant simulations. A common approach for fault-tolerance in distributed systems is check-pointing. In this approach, states of the system are persistently stored through-out its operation. In case a failure occurs, the system is restored using a previously saved state. Given the abovementioned shortcomings of the HLA standard this thesis explores development of fault-tolerant mechanisms in the context of the HLA. More specifically, the design, implementation and evaluation of fault-tolerance mechanisms, based on check-pointing, are described and discussed. / QC 20101111
3

Synchronous vs Asynchronous calls and Flow Control for HLA 4 / Synkrona mot Asynkrona anrop och Flow Control för HLA 4

Frisén, David January 2022 (has links)
HLA is a standard for distributed simulations where many small simulations connect to each other to create a bigger simulation. As networking technologies have evolved the requirements for the simulations. This includes running certain simulations to communicate over Wide Area, 4G, and 5G networks. The Federate Protocol has been purposed as a solution giving the simulations a client-server model. Currently simulations send requests and wait for the responses which results in performance losses as the simulation waits for the Round Trip of the request. Therefore an Asynchronous solution has been purposed to solve this performance issue. To make sure the simulations do not send to many requests and overwhelm the server Flow Control is needed. This paper will compare the performance of Synchronous and Asynchronous modes and look at what kinds of Flow Control methods can be used and their behaviors
4

O contrato de programa na Lei Federal nº 11.107/05 / The public-public partnership agreement according to the federal law n.11107/05

Hohmann, Ana Carolina Cavalcanti 01 December 2011 (has links)
O presente trabalho tem como escopo analisar a figura jurídica do contrato de programa, instituída pela Lei federal n. 11.107/05, como modalidade contratual apta e adequada a viabilizar a prestação de serviços públicos em regime de gestão associada entre os entes federativos ou entre estes e um consórcio público. O contrato de programa está inserido numa nova racionalidade administrativa, imprimida no Brasil com relevo a partir da publicação da Emenda Constitucional n. 19/98 racionalidade esta segundo a qual a Administração Pública tem o seu caráter impositivo e de unilateralidade arrefecido, em prol da concertação, tanto entre os entes públicos, quanto entre estes e entidades privadas. Nesse contexto, o contrato administrativo adquire novos contornos, celebrando o acordo e a consensualidade entre as partes em prol da obtenção de melhores resultados e da eficiência administrativa. A Emenda Constitucional n. 19/98, ao inserir na Constituição da República o artigo 241, referendou a cooperação entre entes federativos, já prevista no parágrafo único de seu artigo 23, ao autorizar a gestão associada de serviços públicos. Entretanto, somente em 06 de abril 2005 essa atuação cooperativa no âmbito da prestação de serviços públicos é regulamentada, com o advento da Lei federal n. 11.107. Nessa égide, a figura jurídica do contrato de programa será examinada num cenário de transformação do instituto do contrato administrativo e inserida no modelo de federalismo cooperativo vigente no Brasil. Ao final, serão apreciados alguns instrumentos jurídicos que demonstram como vêm se dando as experiências de gestão associada de serviços públicos desde o advento da Lei federal n. 11.107/05 na seara do saneamento básico. / This paper aims to discuss the public-public partnership agreement, grounded on the Brazilian legislation by the Federal law n. 11.107/05, as the appropriate instrument to enable the associated provision of public services between the federated units or between those and a public consortium. The public-public partnership agreement is inserted in a new administrative rationality, which gained relevance in Brazil as the Constitutional Amendment n.19/98 was published. According to this rationality, the Public Administration has its usual authoritarian and unilateral behaviors diminished, leaving more room for administrative concertation between federate units, as well as between those and private entities. In this context, the administrative contract acquires new configurations, giving emphasis to the agreement and to consensuality between the parts involved, aiming better results and administrative efficiency. The Constitutional Amendment n.19/98, as it inserts the article n. 241 in the Federal Constitution text, endorsed the cooperation between federated units, which was already predicted on its article 23, single paragraph, as it authorized the associated management of public services. However, only on April 6th 2005 this cooperative performance, on what concerns the provision of public services is ruled, as the Federal law n. 11.107 is published. Accordingly, the public-public partnership agreement will be examined in a scenery of transformation in the administrative contract configuration and situated in the cooperative federalism structure adopted in Brazil. At the end, some legal instruments on sanitation will be examined, in order to illustrate how the experiences concerning the public services associated management have been taking place since the publication of the Federal law n. 11.107/05.
5

O contrato de programa na Lei Federal nº 11.107/05 / The public-public partnership agreement according to the federal law n.11107/05

Ana Carolina Cavalcanti Hohmann 01 December 2011 (has links)
O presente trabalho tem como escopo analisar a figura jurídica do contrato de programa, instituída pela Lei federal n. 11.107/05, como modalidade contratual apta e adequada a viabilizar a prestação de serviços públicos em regime de gestão associada entre os entes federativos ou entre estes e um consórcio público. O contrato de programa está inserido numa nova racionalidade administrativa, imprimida no Brasil com relevo a partir da publicação da Emenda Constitucional n. 19/98 racionalidade esta segundo a qual a Administração Pública tem o seu caráter impositivo e de unilateralidade arrefecido, em prol da concertação, tanto entre os entes públicos, quanto entre estes e entidades privadas. Nesse contexto, o contrato administrativo adquire novos contornos, celebrando o acordo e a consensualidade entre as partes em prol da obtenção de melhores resultados e da eficiência administrativa. A Emenda Constitucional n. 19/98, ao inserir na Constituição da República o artigo 241, referendou a cooperação entre entes federativos, já prevista no parágrafo único de seu artigo 23, ao autorizar a gestão associada de serviços públicos. Entretanto, somente em 06 de abril 2005 essa atuação cooperativa no âmbito da prestação de serviços públicos é regulamentada, com o advento da Lei federal n. 11.107. Nessa égide, a figura jurídica do contrato de programa será examinada num cenário de transformação do instituto do contrato administrativo e inserida no modelo de federalismo cooperativo vigente no Brasil. Ao final, serão apreciados alguns instrumentos jurídicos que demonstram como vêm se dando as experiências de gestão associada de serviços públicos desde o advento da Lei federal n. 11.107/05 na seara do saneamento básico. / This paper aims to discuss the public-public partnership agreement, grounded on the Brazilian legislation by the Federal law n. 11.107/05, as the appropriate instrument to enable the associated provision of public services between the federated units or between those and a public consortium. The public-public partnership agreement is inserted in a new administrative rationality, which gained relevance in Brazil as the Constitutional Amendment n.19/98 was published. According to this rationality, the Public Administration has its usual authoritarian and unilateral behaviors diminished, leaving more room for administrative concertation between federate units, as well as between those and private entities. In this context, the administrative contract acquires new configurations, giving emphasis to the agreement and to consensuality between the parts involved, aiming better results and administrative efficiency. The Constitutional Amendment n.19/98, as it inserts the article n. 241 in the Federal Constitution text, endorsed the cooperation between federated units, which was already predicted on its article 23, single paragraph, as it authorized the associated management of public services. However, only on April 6th 2005 this cooperative performance, on what concerns the provision of public services is ruled, as the Federal law n. 11.107 is published. Accordingly, the public-public partnership agreement will be examined in a scenery of transformation in the administrative contract configuration and situated in the cooperative federalism structure adopted in Brazil. At the end, some legal instruments on sanitation will be examined, in order to illustrate how the experiences concerning the public services associated management have been taking place since the publication of the Federal law n. 11.107/05.
6

Nacionalização da política de assistência social e governos estaduais no Brasil: o caso do estado de São Paulo / Nationalization of social assistance politic and state governments in Brazil: São Paulo state case

Gomes, Maria do Rosario Corrêa de Salles 21 May 2008 (has links)
Made available in DSpace on 2016-04-29T14:17:25Z (GMT). No. of bitstreams: 1 Maria do Rosario Correa de Salles Gomes.pdf: 3598634 bytes, checksum: 7a9f93dbb6953a46f60daa262fbd60dd (MD5) Previous issue date: 2008-05-21 / It is in course the elaboration of a new federative pact of Social Assistance Politic management, given by the implantation process of Social Assistance Unique System (SUAS). It means a no-contributive public system, decentralized and participative that give effectiveness to Social Assistance National Politic a closely bound division of responsibility between the federate beings, in a shared way of management, of co-financing and technical cooperation. Under the load of a process of political-administrative decentralization emphasized during the last 20 years of city council is made a need of a practical exercise re-definition of competences and responsibilities of each governmental scope. A first hypothesis suggest that the implementation of public social assistance decentralizing (therefore after 1988) is happening , primordially under a higher municipal and federal scope protagonist, beside a more dubious and secondary state scope protagonist. In such case, is needed a consideration of the influence of previous politics legacy for the actual proposition of a national politic of no-contributive social protection, that has not a republican tradition of social assistance partaken management. In such case, the institutional appearance of social assistance as state responsibility is presented, alongside the history, under different rhythms and times to the federate people. It s interesting to recognize the way how was shaped in the Brazilian states the responsibility about social assistance, which historic presence in Brazilian federation possess a political force that antecede the municipal presence in the federative pact. To refine the definition of the particular state responsibility management of an unified scheme undergo the knowledge of historic conditionings that determinate the management organs actual conformation, as well as the resistance and facilities to join a new federative pact required by SUAS. In such sense, the particular examination of eight states permit to detect similarities and differences among themselves, approximation of federal scope influence over the state and regional order particularities / Está em curso a elaboração de um novo pacto federativo de gestão da Política de Assistência Social, dado pelo processo de implantação do Sistema Único de Assistência Social (SUAS). Trata-se de um sistema público não-contributivo, descentralizado e participativo que dá efetividade à Política Nacional de Assistência Social, vinculado à divisão de responsabilidades entre os entes federados, a um modo de gestão compartilhada, ao co-financiamento e a cooperação técnica. Sob o peso de um processo de descentralização político-administrativa que enfatizou, ao longo dos últimos 20 anos a municipalização, faz-se mister a redefinição do exercício prático das competências e responsabilidades de cada esfera governamental. Uma primeira hipótese sugere que a implementação da descentralização da assistência social pública (portanto, após 1988) vem ocorrendo, primordialmente sob o protagonismo mais forte das esferas municipal e federal, ao lado de um protagonismo mais incerto e secundário da esfera estadual. Considera-se, para tanto, a influência do legado de políticas prévias para a atual propositura de uma política nacional de proteção social não-contributiva, que não tem tradição republicana na gestão compartilhada da assistência social. Assim, o surgimento da institucionalidade da assistência social como responsabilidade estatal aparece, ao longo da história, em ritmos e tempos diferentes para os entes federados. Interessa conhecer, então, o modo como se configurou nos estados brasileiros a responsabilidade pela assistência social, cujo protagonismo histórico na configuração da federação brasileira tem força política que antecede a presença dos municípios no pacto federativo. Aprimorar a definição da particularidade da responsabilização estadual na gestão de um sistema unificado passa por conhecer os condicionantes históricos que determinam a atual conformação dos órgãos gestores, bem como as resistências e facilidades para aderir ao novo pacto federativo requerido pelo SUAS. Nesse sentido, o exame particular de oito estados permite detectar semelhanças e diferenças entre si, as aproximações da influência da esfera federal sobre a estadual e particularidades de ordem regional
7

Recherches sur les fédérés et l'armée romaine (de la fin du IIe siècle après J.-C. au début du VIIe siècle après J.-C) / Research on Federates and the Roman army (from the end of the second century AD to the beginning of the seventh century AD)

Sartor, Guillaume 08 December 2018 (has links)
La présente recherche sous la direction de J.-M. Carrié, a porté sur les fédérés (foederati), ces combattants barbares servant dans leurs contingents ethnico-tactiques sous commandement de leurs chefs ethniques. Les fédérés étaient fournis par des groupes ethniques alliés de l’Empire dans le cadre de traités (foedus/foedera, spondê/spondai, synthêkê/synthêkai) : des gentes foederatae, enspondoi, hypospondoi, ces termes soulignant le lien diplomatique entre l’Empire et la gens. A la dimension diplomatique, s’ajoute la dimension militaire exprimée dans le vocabulaire de l’alliance (societas, symmachia), de l’auxiliariat (auxilium) ainsi que dans celui de l’amitié (amicitia/philia). L’analyse terminologique montre que les auteurs anciens utilisent le vocabulaire classique comme un filtre qu’il faut dépasser pour appréhender les fédérés. Une analyse fine et contextualisée des sources restituant une stratigraphie sémantique et révélant les anachronismes d'historiens décrivant d'après la situation de leur époque des phénomènes passés, a permis de souligner cette évolution masquée par la continuité terminologique. L’apparition des termes techniques foederati et phoideratoi au Ve siècle ne doit pas tromper. Il faut interpréter le terme foederati à partir des années 400 comme le recours à un terme républicain ancien pour désigner un nouvel aspect d’une réalité connue des Romains – celle des contingents fournis par les alliés selon des traités – notamment depuis le basculement stratégique des guerres danubiennes sous Marc Aurèle qui annoncent les difficultés à venir de l’Empire au IIIe siècle – puis aux Ve et VIe siècles – et la nécessité pour ce dernier de trouver des solutions aux périls pesant sur l’ordre impérial : le recours au substantif foederati permettait de nommer des combattants levés par traités auprès de gentes établies sur le sol impérial (gentes foederatae intra fines imperii), les Goths incarnant, après Andrinople, les premières gentes établies par traités dans l’Empire, alors que le terme désignait les contingents ethnico-tactiques fournis par des gentes foederatae extérieures au territoire impérial. Il faut distinguer les foederati extérieurs fournis par les gentes foederatae extérieures des foederati impériaux fournis par les gentes établies dans l’Empire à partir des années 380-400. Si le phénomène des foederati est ancien, les admissions territoriales de gentes par foedera/spondai lui conférèrent de nouveaux aspects. Par l’établissement territorial de gentes intra fines imperii, l’Empire appliquait à des groupes un mode de gestion de relations romano-barbares réservé aux gentes extérieures au territoire impérial : la conclusion de traités. Pris dans une logique de rapports de force, sur son sol et sur ses confins, l’Empire devait utiliser ces gentes selon ses intérêts. L’étude montre que l’Empire tenta de maîtriser le phénomène en intégrant les foederati au système militaire impérial suivant des besoins militaires, tactiques et stratégiques. Le recours aux chefs comme médiateurs entre leurs gentes, leurs fédérés et l’Empire a été fondamental. La volonté de contrôle de l’Etat impérial se mesure également à l’intégration des foederati au système logistique (ravitaillement, rémunérations, entretien) de la machine de guerre impériale. On peut se demander si l’Etat impérial n’a pas conçu les foederati comme un outil permettant de gérer différemment les ressources militaires, humaines et financières nécessaires à la défense de l’Empire. A cette fin, l’idéologie impériale a développé un discours justifiant l’emploi par l’Empire de ses gentes foederatae avec des objectifs stratégiques répondant aux défis auxquels l’Empire fut confronté de la fin du IIIe siècle au début du VIIe siècle. / The federates (foederati, symmachoi, auxiliares) were soldiers recruited among barbarian groups (gentes) – settled inside or outside the Empire – who committed by treaties (foedus/foedera ; spondê/spondai) to provide the Emperor with warriors serving on their owns.The study tries to show that the Empire attempted to control this phenomenon by including the foederati to the imperial military system in accordance with military needs and specific tactics.The will of control from the imperial state is also measured by the integration of the foederati into the imperial logistical system during military operations (food supplies, payment, and maintenance).One can wonder if the imperial state didn’t create the foederati as a tool allowing to manage – in a different way – the military, human, and financial resources required to the defense of the Empire.To that purpose, the imperial ideology seems to have set up a speech to justify and legitimate the employment by the Empire of these gentes foederatae (enspondoi, hypospondoi) with strategic goals/aims, in agreement with the challenges the Empire was confronted by from the end of the 3rd century to the beginning of the 7th (century).

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