This document discusses two publish/subscribe communication standards for distributed simulations: HLA and DDS. It introduces NCWare, a middleware developed by Nextel Engineering that unifies HLA and DDS. NCWare allows applications to interoperate between HLA and DDS by mapping data between their models and providing a single API. It also improves performance over HLA by using DDS as the underlying transport protocol while maintaining HLA semantics and services. NCWare provides a simple interface and real-time QoS capabilities to enable true distributed simulations using both HLA and DDS standards.
Addressing the Challenges of Tactical Information Management in Net-Centric S...Angelo Corsaro
This paper provides an overview of the advantages provided by the OMG Data Distribution Service for Real-Time Systemts (DDS) for addressing the challenges associated with Tactical Information distribution.
Quality of Service in Publish/Subscribe MiddlewareAngelo Corsaro
During the last decade the publish/subscribe communication paradigm gained a central role in the design and development of a large class of applications ranging from stock exchange systems to news tickers, from air traffic control to defense systems. This success is mainly due to the capacity of publish/subscribe to completely decouple communication participants, thus allowing the development of applications that are more tolerant to communications asynchrony. This chapter introduces the publish/subscribe communication paradigm, stressing those charac- teristics that have a stronger impact on the quality of service provided to partic- ipants. The chapter also introduce the reader to two widely recognized industrial standards for publish/subscribe systems: the Java Message Service (JMS) and the Data Distribution Service (DDS).
This document provides an introduction to Eclipse Zenoh, an open source project that unifies data in motion, data at rest, and computations in a distributed system. Zenoh elegantly blends traditional publish-subscribe with geo-distributed storage, queries, and computations. The presentation will demonstrate Zenoh's advantages for enabling typical edge computing scenarios and simplifying large-scale distributed applications through real-world use cases. It will also provide an overview of Zenoh's architecture, performance, and APIs.
A Scalable, Commodity Data Center Network ArchitectureHiroshi Ono
- The document proposes a new scalable network architecture for large data centers containing tens of thousands of computers.
- Traditional data center network architectures using high-end switches and routers can only support 50% of the total bandwidth available at the network edge, while also being very costly.
- The proposed architecture leverages largely commodity Ethernet switches to support the full aggregate bandwidth of large clusters in a more cost-effective way, similar to how commodity computers have replaced more specialized hardware.
The document discusses middleware technologies and provides an overview of the Data Distribution Service (DDS) model and its applicability. It begins by explaining how middleware abstracts common interaction patterns and network middleware in particular. It then contrasts different communication models used in middleware like point-to-point, client-server, publish-subscribe messaging, and replicated data. The document dives deeper into comparing request-response with pub-sub/messaging/data distribution and explaining the differences between message queues and publish-subscribe. Finally, it outlines the DDS service model and how it provides a global data space that is accessible to all interested applications through subscriptions that are decoupled from publishers.
Mobile platforms such as Android/iOS based smart phones, phablets , and tablets are swiftly establishing as the target client platform for a large class of consumer as well as enterprise and mission/business critical applications. OpenSplice Mobile is a pure Java DDS implementation optimized for Android and the JVM that provides effective and efficient DDS connectivity to Android based devices – as well as any JVM enabled device.
OpenSplice Mobile is the first peer-to-peer middleware infrastructure designed for Android that allow seamless interoperability with existing DDS systems and provides a powerful infrastructure for next generation peer-to-peer Android applications.
This presentation introduces OpenSplice Mobile, provides and overview of its architecture and performances and gets you started writing DDS applications for Android!
This document provides a summary of key concepts in computer networks:
1. It defines a computer network and describes the basic components - PCs, interconnections like network cards and cables, switches, and routers.
2. It discusses common network applications like email, web browsers, instant messaging, and collaboration tools.
3. It describes the seven-layer OSI model and compares it to the TCP/IP model, explaining the functions of the physical, data link, network, and transport layers.
4. It discusses networking software, network performance metrics like bandwidth and latency, and link layer services like acknowledged and unacknowledged connection-oriented services.
Addressing the Challenges of Tactical Information Management in Net-Centric S...Angelo Corsaro
This paper provides an overview of the advantages provided by the OMG Data Distribution Service for Real-Time Systemts (DDS) for addressing the challenges associated with Tactical Information distribution.
Quality of Service in Publish/Subscribe MiddlewareAngelo Corsaro
During the last decade the publish/subscribe communication paradigm gained a central role in the design and development of a large class of applications ranging from stock exchange systems to news tickers, from air traffic control to defense systems. This success is mainly due to the capacity of publish/subscribe to completely decouple communication participants, thus allowing the development of applications that are more tolerant to communications asynchrony. This chapter introduces the publish/subscribe communication paradigm, stressing those charac- teristics that have a stronger impact on the quality of service provided to partic- ipants. The chapter also introduce the reader to two widely recognized industrial standards for publish/subscribe systems: the Java Message Service (JMS) and the Data Distribution Service (DDS).
This document provides an introduction to Eclipse Zenoh, an open source project that unifies data in motion, data at rest, and computations in a distributed system. Zenoh elegantly blends traditional publish-subscribe with geo-distributed storage, queries, and computations. The presentation will demonstrate Zenoh's advantages for enabling typical edge computing scenarios and simplifying large-scale distributed applications through real-world use cases. It will also provide an overview of Zenoh's architecture, performance, and APIs.
A Scalable, Commodity Data Center Network ArchitectureHiroshi Ono
- The document proposes a new scalable network architecture for large data centers containing tens of thousands of computers.
- Traditional data center network architectures using high-end switches and routers can only support 50% of the total bandwidth available at the network edge, while also being very costly.
- The proposed architecture leverages largely commodity Ethernet switches to support the full aggregate bandwidth of large clusters in a more cost-effective way, similar to how commodity computers have replaced more specialized hardware.
The document discusses middleware technologies and provides an overview of the Data Distribution Service (DDS) model and its applicability. It begins by explaining how middleware abstracts common interaction patterns and network middleware in particular. It then contrasts different communication models used in middleware like point-to-point, client-server, publish-subscribe messaging, and replicated data. The document dives deeper into comparing request-response with pub-sub/messaging/data distribution and explaining the differences between message queues and publish-subscribe. Finally, it outlines the DDS service model and how it provides a global data space that is accessible to all interested applications through subscriptions that are decoupled from publishers.
Mobile platforms such as Android/iOS based smart phones, phablets , and tablets are swiftly establishing as the target client platform for a large class of consumer as well as enterprise and mission/business critical applications. OpenSplice Mobile is a pure Java DDS implementation optimized for Android and the JVM that provides effective and efficient DDS connectivity to Android based devices – as well as any JVM enabled device.
OpenSplice Mobile is the first peer-to-peer middleware infrastructure designed for Android that allow seamless interoperability with existing DDS systems and provides a powerful infrastructure for next generation peer-to-peer Android applications.
This presentation introduces OpenSplice Mobile, provides and overview of its architecture and performances and gets you started writing DDS applications for Android!
This document provides a summary of key concepts in computer networks:
1. It defines a computer network and describes the basic components - PCs, interconnections like network cards and cables, switches, and routers.
2. It discusses common network applications like email, web browsers, instant messaging, and collaboration tools.
3. It describes the seven-layer OSI model and compares it to the TCP/IP model, explaining the functions of the physical, data link, network, and transport layers.
4. It discusses networking software, network performance metrics like bandwidth and latency, and link layer services like acknowledged and unacknowledged connection-oriented services.
The document provides an introduction to computer networks. It discusses what a network is, why networks are needed, and how they are classified based on scale, connection method, and relationship. The key types of networks covered are personal area networks, local area networks, campus area networks, metropolitan area networks, wide area networks, and virtual private networks. Basic network hardware components are also introduced.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Tuning and Troubleshooting OpenSplice DDS ApplicationsAngelo Corsaro
The document provides an overview of common issues encountered when building distributed applications with OpenSplice DDS, such as connectivity, performance, scalability, and resource utilization issues. It discusses how to diagnose these issues using OpenSplice DDS tools and configure QoS policies, deployment options, shared memory size, topic types and keys to address the issues.
iaetsd Controlling data deuplication in cloud storageIaetsd Iaetsd
This document discusses controlling data deduplication in cloud storage. It proposes an architecture that provides duplicate check procedures with minimal overhead compared to normal cloud storage operations. The key aspects of the proposed system are:
1) It uses convergent encryption to encrypt data for privacy while still allowing for deduplication of duplicate files.
2) It introduces a private cloud that manages user privileges and generates tokens for authorized duplicate checking in a hybrid cloud architecture.
3) It evaluates the overhead of the proposed authorized duplicate checking scheme and finds it incurs negligible overhead compared to normal cloud storage operations.
This document summarizes the CoQUOS approach for maintaining consistency of continuous queries in unstructured peer-to-peer networks. CoQUOS is a lightweight middleware that supports registering long-standing queries and notifying peers when new matching content appears. It uses cluster-resilient random walks and dynamic probability-based query registration. The consistency maintenance mechanism ensures timely updates and avoids unnecessary replication by adaptively polling replicas based on query and update rates. Evaluation shows CoQUOS achieves high consistency efficiency at low cost.
The document introduces MedPort, an integrated system that creates secure bridges of communication to simplify the exchange of healthcare information between disparate systems. It does this using existing infrastructure like portable object discovery and lightweight agents and connectors, reducing complexity and costs. The system is designed to be easy to deploy and use to help address challenges in healthcare communications and interoperability. It also aims to provide secure centralized management of resources and information exchange.
This document discusses using Hidden Markov Model (HMM) forward chaining techniques for prefetching in distributed file systems (DFS) for cloud computing. It begins by introducing DFS for cloud storage and issues like load balancing. It then discusses using HMM to analyze client I/O and predict future requests to prefetch relevant data. The HMM forward algorithm would be used to prefetch data from storage servers to clients proactively. This could improve performance by reducing client wait times for requested data in DFS for cloud applications.
Implementation of Agent Based Dynamic Distributed ServiceCSCJournals
This document proposes a design for agent migration between distributed systems using ACL (Agent Communication Language) messages. It involves serializing an agent's code and state into an ACL message that is sent from one system to another. The receiving system deserializes the agent to restore its execution. The design includes defining an ontology for migration messages, a migration protocol specifying the message flow, and components for handling class loading, agent migration, and conversation protocols. The performance of this distributed agent migration approach is evaluated by applying it to a distributed prime number calculation application.
with 100 Mbps capacity each. During the event, we observed the
traffic demands of each SDTN, and dynamically changed the
1) The document proposes a novel Software Defined Transport Network amount of resources allocated to each SDTN according to the
(SDTN) architecture that enables network virtualization and demands. This demonstrated the dynamic resource allocation
programmability at the transport layer, allowing multiple virtual mechanism.
networks to coexist on a shared multi-layer network infrastructure. 3) Network failure recovery: We also conducted an experiment of
failure recovery at the transport layer. By letting the SDTNs to
2) Key aspects of the architecture include a Physical
Design and implementation of a personal super Computerijcsit
Resources of personal devices, whether mobile or stationary, can be productively leveraged to service their
users. By doing so, personal users will be able to ubiquitously run relatively complex computational jobs,
which cannot be accommodated in their individual personal devices or while they are on the move. To this
end, the paper proposes a Personal Super Computer (PSC) that superimpose grid functionality over
networked personal devices. In this paper, architectural designs of (PSC) were developed and evaluated
thoroughly through a strictly controlled empirical evaluation framework. The results showed that this
system has successfully maintained high speedup over regular personal computers under different running
conditions.
Audio/Video Conferencing in Distributed Brokering SystemsVideoguy
This document proposes using a distributed brokering system called NaradaBrokering to support audio/video conferencing. It outlines improvements made over previous work, including eliminating redundant headers from messages and supporting legacy applications. The key contribution is a new event called RTPEvent that compactly encapsulates multimedia content for efficient routing while avoiding echo problems and supporting variable length topic names. Experimental results show NaradaBrokering can effectively support real-time audio/video conferencing among large, heterogeneous clients.
Postponed Optimized Report Recovery under Lt Based Cloud MemoryIJARIIT
Fountain code based conveyed stockpiling system give solid online limit course of action through putting unlabeled
subset pieces into various stockpiling hubs. Luby Transformation (LT) code is one of the predominant wellspring codes for limit
systems in view of its viable recuperation. In any case, to ensure high accomplishment deciphering of wellspring code based limit
recuperation of additional segments in required and this need could avoid additional put off. We give the idea that distinctive stage
recuperation of piece is powerful to lessen the document recovery delay. We first develop a postpone display for various stage
recuperation arranges pertinent to our considered system with the made model. We focus on perfect recuperation arranges given
essentials on accomplishment decipher limit. Our numerical outcomes propose a focal tradeoff between the record recuperation
delay and the target of fruitful document unraveling and that the report recuperation deferral can be on a very basic level decrease
by in a perfect world bundle requests in a multi arrange style.
The document discusses security issues in cloud computing environments, particularly distributed denial-of-service (DDoS) attacks. It provides background on cloud computing and defines DDoS attacks. The document then reviews different approaches in existing literature to address the problem of tracing the source of DDoS attacks, including using packet marking to probabilistically or deterministically mark packets with router addresses as they are traversed. Flexible packet marking schemes and the use of tables to reconstruct attack paths from marked packets are also discussed.
This document discusses a proposed light-weight authentication system and resource monitoring using a multi-agent system (MAS). It proposes using mobile agents for key distribution and management to authenticate users, which would provide benefits over existing methods like Kerberos that require high computation. The system would use three types of agents: registration agents to issue public/private key pairs, validation agents to authenticate users, and certificate authority agents to issue session keys for secure communication. This distributed MAS approach aims to provide faster authentication with high availability compared to existing centralized approaches. The proposed solution is implemented using the SPADE MAS framework and XMPP protocol.
This document discusses developing a lightweight communication system in grid computing. It begins by introducing grid computing and some of the challenges in designing infrastructure for distributed resources over high-bandwidth, high-delay networks. The goal is to build an efficient, flexible and scalable inter-grid communication system by reducing unnecessary system calls and applying multicast protocols with MPI. It reviews existing work in grid security frameworks, user management models, and dynamic scheduling systems. The proposed approach focuses on optimizing lightweight communication through methods like using multiple networks in parallel, simplifying protocols, and avoiding temporary buffering and unnecessary system calls to improve throughput and reliability over limited bandwidths.
Cloud computing challenges and solutionsIJCNCJournal
Cloud computing is an emerging area of computer technology that benefits form the processing power and
the computing resources of many connected, geographically distanced computers connected via Internet.
Cloud computing eliminates the need of having a complete infrastructure of hardware and software to meet
users requirements and applications. It can be thought of or considered as a complete or a partial
outsourcing of hardware and software resources. To access cloud applications, a good Internet connection
and a standard Internet browser are required. Cloud computing has its own drawback from the security
point of view; this paper aims to address most of these threats and their possible solutions.
The document discusses communication over networks and introduces several key concepts:
1. It describes the basic elements of communication including a source, destination, and channel. It notes devices communicate in the same way with senders, receivers, and a pathway.
2. It discusses how segmenting data into smaller packets allows for multiplexing of different transmissions and increases reliability over the network by allowing alternate paths if one fails.
3. It introduces the different components that make up a network including end devices, intermediary devices, and different types of media that provide the channel for communication.
Trabalho de Sistemas Paralelos e Distribuidos : "Parallel and Distributed Computing: BOINC Grid Implementation" por Rodrigo Neves, Nuno Mestre, Francisco Machado e João Lopes
The document provides an overview of computer networks and networking concepts. It discusses what a network is, different types of networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). It also describes the Open Systems Interconnection (OSI) model and its seven layers. Finally, it discusses reference models for networking including the OSI model and TCP/IP model, and provides examples of different types of networks.
PROVABLE MULTICOPY DYNAMIC DATA POSSESSION IN CLOUD COMPUTING SYSTEMSNexgen Technology
bulk ieee projects in pondicherry,ieee projects in pondicherry,final year ieee projects in pondicherry
Nexgen Technology Address:
Nexgen Technology
No :66,4th cross,Venkata nagar,
Near SBI ATM,
Puducherry.
Email Id: praveen@nexgenproject.com.
www.nexgenproject.com
Mobile: 9751442511,9791938249
Telephone: 0413-2211159.
NEXGEN TECHNOLOGY as an efficient Software Training Center located at Pondicherry with IT Training on IEEE Projects in Android,IEEE IT B.Tech Student Projects, Android Projects Training with Placements Pondicherry, IEEE projects in pondicherry, final IEEE Projects in Pondicherry , MCA, BTech, BCA Projects in Pondicherry, Bulk IEEE PROJECTS IN Pondicherry.So far we have reached almost all engineering colleges located in Pondicherry and around 90km
This document discusses using the Data Distribution Service (DDS) as a High Level Architecture (HLA) Run Time Infrastructure (RTI). DDS was originally developed in 2003 for real-time communication in frigates and has since expanded to many industrial applications including simulation. Using DDS as an HLA RTI provides advantages like scalability, fault tolerance, and ability to handle less-than-perfect communications compared to a centralized HLA server. SimWare RTI is presented as the first RTI that joins DDS with HLA RTI to provide HLA services while leveraging the features, performance, and reliability of the DDS standard for data distribution without needing gateways.
Este documento presenta un análisis de viabilidad de un proyecto de teleasistencia llamado DIA (Dispositivos Inteligentes que Alertan) que utiliza sensores para monitorear a personas que viven solas. Incluye un análisis DAFO, estrategias de marketing y ventas, y un análisis financiero que muestra que el proyecto es rentable a largo plazo con una inversión inicial de 1,395,000 euros financiada parcialmente por deuda y capital de riesgo.
The document provides an introduction to computer networks. It discusses what a network is, why networks are needed, and how they are classified based on scale, connection method, and relationship. The key types of networks covered are personal area networks, local area networks, campus area networks, metropolitan area networks, wide area networks, and virtual private networks. Basic network hardware components are also introduced.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Tuning and Troubleshooting OpenSplice DDS ApplicationsAngelo Corsaro
The document provides an overview of common issues encountered when building distributed applications with OpenSplice DDS, such as connectivity, performance, scalability, and resource utilization issues. It discusses how to diagnose these issues using OpenSplice DDS tools and configure QoS policies, deployment options, shared memory size, topic types and keys to address the issues.
iaetsd Controlling data deuplication in cloud storageIaetsd Iaetsd
This document discusses controlling data deduplication in cloud storage. It proposes an architecture that provides duplicate check procedures with minimal overhead compared to normal cloud storage operations. The key aspects of the proposed system are:
1) It uses convergent encryption to encrypt data for privacy while still allowing for deduplication of duplicate files.
2) It introduces a private cloud that manages user privileges and generates tokens for authorized duplicate checking in a hybrid cloud architecture.
3) It evaluates the overhead of the proposed authorized duplicate checking scheme and finds it incurs negligible overhead compared to normal cloud storage operations.
This document summarizes the CoQUOS approach for maintaining consistency of continuous queries in unstructured peer-to-peer networks. CoQUOS is a lightweight middleware that supports registering long-standing queries and notifying peers when new matching content appears. It uses cluster-resilient random walks and dynamic probability-based query registration. The consistency maintenance mechanism ensures timely updates and avoids unnecessary replication by adaptively polling replicas based on query and update rates. Evaluation shows CoQUOS achieves high consistency efficiency at low cost.
The document introduces MedPort, an integrated system that creates secure bridges of communication to simplify the exchange of healthcare information between disparate systems. It does this using existing infrastructure like portable object discovery and lightweight agents and connectors, reducing complexity and costs. The system is designed to be easy to deploy and use to help address challenges in healthcare communications and interoperability. It also aims to provide secure centralized management of resources and information exchange.
This document discusses using Hidden Markov Model (HMM) forward chaining techniques for prefetching in distributed file systems (DFS) for cloud computing. It begins by introducing DFS for cloud storage and issues like load balancing. It then discusses using HMM to analyze client I/O and predict future requests to prefetch relevant data. The HMM forward algorithm would be used to prefetch data from storage servers to clients proactively. This could improve performance by reducing client wait times for requested data in DFS for cloud applications.
Implementation of Agent Based Dynamic Distributed ServiceCSCJournals
This document proposes a design for agent migration between distributed systems using ACL (Agent Communication Language) messages. It involves serializing an agent's code and state into an ACL message that is sent from one system to another. The receiving system deserializes the agent to restore its execution. The design includes defining an ontology for migration messages, a migration protocol specifying the message flow, and components for handling class loading, agent migration, and conversation protocols. The performance of this distributed agent migration approach is evaluated by applying it to a distributed prime number calculation application.
with 100 Mbps capacity each. During the event, we observed the
traffic demands of each SDTN, and dynamically changed the
1) The document proposes a novel Software Defined Transport Network amount of resources allocated to each SDTN according to the
(SDTN) architecture that enables network virtualization and demands. This demonstrated the dynamic resource allocation
programmability at the transport layer, allowing multiple virtual mechanism.
networks to coexist on a shared multi-layer network infrastructure. 3) Network failure recovery: We also conducted an experiment of
failure recovery at the transport layer. By letting the SDTNs to
2) Key aspects of the architecture include a Physical
Design and implementation of a personal super Computerijcsit
Resources of personal devices, whether mobile or stationary, can be productively leveraged to service their
users. By doing so, personal users will be able to ubiquitously run relatively complex computational jobs,
which cannot be accommodated in their individual personal devices or while they are on the move. To this
end, the paper proposes a Personal Super Computer (PSC) that superimpose grid functionality over
networked personal devices. In this paper, architectural designs of (PSC) were developed and evaluated
thoroughly through a strictly controlled empirical evaluation framework. The results showed that this
system has successfully maintained high speedup over regular personal computers under different running
conditions.
Audio/Video Conferencing in Distributed Brokering SystemsVideoguy
This document proposes using a distributed brokering system called NaradaBrokering to support audio/video conferencing. It outlines improvements made over previous work, including eliminating redundant headers from messages and supporting legacy applications. The key contribution is a new event called RTPEvent that compactly encapsulates multimedia content for efficient routing while avoiding echo problems and supporting variable length topic names. Experimental results show NaradaBrokering can effectively support real-time audio/video conferencing among large, heterogeneous clients.
Postponed Optimized Report Recovery under Lt Based Cloud MemoryIJARIIT
Fountain code based conveyed stockpiling system give solid online limit course of action through putting unlabeled
subset pieces into various stockpiling hubs. Luby Transformation (LT) code is one of the predominant wellspring codes for limit
systems in view of its viable recuperation. In any case, to ensure high accomplishment deciphering of wellspring code based limit
recuperation of additional segments in required and this need could avoid additional put off. We give the idea that distinctive stage
recuperation of piece is powerful to lessen the document recovery delay. We first develop a postpone display for various stage
recuperation arranges pertinent to our considered system with the made model. We focus on perfect recuperation arranges given
essentials on accomplishment decipher limit. Our numerical outcomes propose a focal tradeoff between the record recuperation
delay and the target of fruitful document unraveling and that the report recuperation deferral can be on a very basic level decrease
by in a perfect world bundle requests in a multi arrange style.
The document discusses security issues in cloud computing environments, particularly distributed denial-of-service (DDoS) attacks. It provides background on cloud computing and defines DDoS attacks. The document then reviews different approaches in existing literature to address the problem of tracing the source of DDoS attacks, including using packet marking to probabilistically or deterministically mark packets with router addresses as they are traversed. Flexible packet marking schemes and the use of tables to reconstruct attack paths from marked packets are also discussed.
This document discusses a proposed light-weight authentication system and resource monitoring using a multi-agent system (MAS). It proposes using mobile agents for key distribution and management to authenticate users, which would provide benefits over existing methods like Kerberos that require high computation. The system would use three types of agents: registration agents to issue public/private key pairs, validation agents to authenticate users, and certificate authority agents to issue session keys for secure communication. This distributed MAS approach aims to provide faster authentication with high availability compared to existing centralized approaches. The proposed solution is implemented using the SPADE MAS framework and XMPP protocol.
This document discusses developing a lightweight communication system in grid computing. It begins by introducing grid computing and some of the challenges in designing infrastructure for distributed resources over high-bandwidth, high-delay networks. The goal is to build an efficient, flexible and scalable inter-grid communication system by reducing unnecessary system calls and applying multicast protocols with MPI. It reviews existing work in grid security frameworks, user management models, and dynamic scheduling systems. The proposed approach focuses on optimizing lightweight communication through methods like using multiple networks in parallel, simplifying protocols, and avoiding temporary buffering and unnecessary system calls to improve throughput and reliability over limited bandwidths.
Cloud computing challenges and solutionsIJCNCJournal
Cloud computing is an emerging area of computer technology that benefits form the processing power and
the computing resources of many connected, geographically distanced computers connected via Internet.
Cloud computing eliminates the need of having a complete infrastructure of hardware and software to meet
users requirements and applications. It can be thought of or considered as a complete or a partial
outsourcing of hardware and software resources. To access cloud applications, a good Internet connection
and a standard Internet browser are required. Cloud computing has its own drawback from the security
point of view; this paper aims to address most of these threats and their possible solutions.
The document discusses communication over networks and introduces several key concepts:
1. It describes the basic elements of communication including a source, destination, and channel. It notes devices communicate in the same way with senders, receivers, and a pathway.
2. It discusses how segmenting data into smaller packets allows for multiplexing of different transmissions and increases reliability over the network by allowing alternate paths if one fails.
3. It introduces the different components that make up a network including end devices, intermediary devices, and different types of media that provide the channel for communication.
Trabalho de Sistemas Paralelos e Distribuidos : "Parallel and Distributed Computing: BOINC Grid Implementation" por Rodrigo Neves, Nuno Mestre, Francisco Machado e João Lopes
The document provides an overview of computer networks and networking concepts. It discusses what a network is, different types of networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). It also describes the Open Systems Interconnection (OSI) model and its seven layers. Finally, it discusses reference models for networking including the OSI model and TCP/IP model, and provides examples of different types of networks.
PROVABLE MULTICOPY DYNAMIC DATA POSSESSION IN CLOUD COMPUTING SYSTEMSNexgen Technology
bulk ieee projects in pondicherry,ieee projects in pondicherry,final year ieee projects in pondicherry
Nexgen Technology Address:
Nexgen Technology
No :66,4th cross,Venkata nagar,
Near SBI ATM,
Puducherry.
Email Id: praveen@nexgenproject.com.
www.nexgenproject.com
Mobile: 9751442511,9791938249
Telephone: 0413-2211159.
NEXGEN TECHNOLOGY as an efficient Software Training Center located at Pondicherry with IT Training on IEEE Projects in Android,IEEE IT B.Tech Student Projects, Android Projects Training with Placements Pondicherry, IEEE projects in pondicherry, final IEEE Projects in Pondicherry , MCA, BTech, BCA Projects in Pondicherry, Bulk IEEE PROJECTS IN Pondicherry.So far we have reached almost all engineering colleges located in Pondicherry and around 90km
This document discusses using the Data Distribution Service (DDS) as a High Level Architecture (HLA) Run Time Infrastructure (RTI). DDS was originally developed in 2003 for real-time communication in frigates and has since expanded to many industrial applications including simulation. Using DDS as an HLA RTI provides advantages like scalability, fault tolerance, and ability to handle less-than-perfect communications compared to a centralized HLA server. SimWare RTI is presented as the first RTI that joins DDS with HLA RTI to provide HLA services while leveraging the features, performance, and reliability of the DDS standard for data distribution without needing gateways.
Este documento presenta un análisis de viabilidad de un proyecto de teleasistencia llamado DIA (Dispositivos Inteligentes que Alertan) que utiliza sensores para monitorear a personas que viven solas. Incluye un análisis DAFO, estrategias de marketing y ventas, y un análisis financiero que muestra que el proyecto es rentable a largo plazo con una inversión inicial de 1,395,000 euros financiada parcialmente por deuda y capital de riesgo.
Simulation & CBTs: Mixing traditional CBT and low cost simulation in the same...Jose Carlos Diaz
Recientemente, a consecuencia del boom tecnológico que ha revolucionado nuestro sector, hemos podido asistir a una verdadera carrera en los requisitos técnicos de los programas de adiestramiento, en términos de calidad gráfica, técnicas de modelización, número de entidades de simulación que son manejadas, interoperabilidad, capacidades de entrenamiento distribuido y conjunto, usuarios concurrentes y muchas otras características. Toda esta tecnología no sirve de mucho si realmente no se pone al servicio de los diferentes participantes en un programa de adiestramiento con la única finalidad de mejorar el proceso de aprendizaje. Así pues los instructores, alumnos, profesores, ISD, SME, responsables de formación, desarrolladores de los contenidos y muchos otros roles involucrados en un programa de adiestramiento deben poder participar proactivamente en el diseño y desarrollo de cualquier producto de adiestramiento. Muchas veces, lo más importante no es lograr desarrollar un sistema técnicamente muy complejo, sino que la combinación de recursos que participan en el programa de adiestramiento de como fruto una mejora del propio proceso de adiestramiento.
Lograr una meta tan intangible como la descrita produciría una serie de beneficios tangibles tales como:
• Producir profesionales mejor entrenados sin tener para ello que desarrollar nuevos activos de adiestramiento y formación (entendiendo por activos tanto los recursos humanos que intervienen tales como los instructores como los recursos técnicos tales como clases, simuladores, entrenamiento en vivo, courseware, así como el recurso del tiempo disponible para adiestramiento)
• Incrementar el número de efectivos que puede recibir formación
• Mantener o mejorar el nivel de conocimientos de los efectivos a formar
• Racionalizar la producción de nuevos contenidos
Este documento presenta una introducción a las redes de sensores inalámbricos (WSN). Explica que una WSN está formada por pequeños nodos sensores que se comunican entre sí de forma inalámbrica para monitorear el mundo físico. Describe la arquitectura típica de una WSN, incluyendo los nodos, campo de sensores, gestor de tareas y puerta de enlace. Además, discute las características, estándares de comunicación, topologías y aplicaciones comunes de las redes de sensores inalá
Tecnologías Web 2.0 de doble uso (civil y militar)Jose Carlos Diaz
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This volume of the Open Datacenter Interoperable Network (ODIN) describes software defined networking (SDN) and OpenFlow. SDN is used to simplify network control and management, automate network virtualization services, and provide a platform from which to build agile ....
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How to Develop True Distributed Simulations? HLA & DDS Interoperability
1. How to Develop True Distributed Simulations?
HLA & DDS Interoperability
José Carlos Díaz
Iván Gálvez
Jose M. López-Rodríguez
Nextel Engineering Systems S.L.
Avda. Manoteras 18 – 4º
Madrid, E-28050 (Spain)
(+34) 91 803 38 02
jcdiaz@nexteleng.es, igalvez@nexteleng.es, jmlrodriguez@nexteleng.es
Keywords:
Middleware, Real-Time, Simulation, M&S, HLA, RTI, Interoperability, DDS, Publish-Subscribe
ABSTRACT:
Nowadays there are two publish / subscribe based communications standards suitable for the simulation market:
IEEE HLA (High Level Architecture), developed in origin by the US DMSO and OMG DDS (Data Distribution
Service), developed by a group of companies with support of OMG organization. HLA is focused in interoperability
and reusability of simulations and DDS is a more general standard, focused on real time systems. This paper presents
NCWare, a new software abstraction layer developed by NEXTEL ENGINEERING that combines HLA and DDS
standards providing interoperability between them.
1. Introduction architecture of the simulators in order to distribute the
data between simulator’s subsystems using open
standards, hence enabling interoperability and
The evolution of M&S systems and NCW[1]/NEC[2] reusability at simulator component level.
scenarios require more performance, in order to join One of the latest standards, DDS2 (Dec 2004 [5]),
more complex applications demanding more data at proposes a communication system optimized for real-
faster rates. These scenarios also demand more time, and thus, offering performance to these scenarios.
interconnection mechanisms, in order to interoperate DDS is not aimed to substitute HLA, since DDS
legacy applications with new ones using the latest applications are broader than simulation, but applied to
standards and communication systems. it, can give a new breath of performance and reliability
Since HLA1 standard [4] is broadly used, much work to this field [3].
has been done on it in order to improve performance In order to successfully adapt legacy applications to
and network use [11], but performance is still seen as a new standards, a middleware which unifies them is a
bottleneck. HLA have demonstrated that it is suitable must. A middleware that combine both standards is best
for interoperating simulators of different providers suited for nowadays demands of quick development of
(federates) in federations distributed across multiple new system or the easy updating of already deployed
networks, but it has not been able to open the
1 High-Level Architecture 2 Data Distribution Service
2. systems to new operational of technical requirements. DDS has also a state-propagation built-in model, so
With such middleware the developer could design and when treating data structures with values which only
develop the system only thinking in the features of the change occasionally, they will be transmitted only once
systems, not in the transport mechanisms or in which for every update, son the network overload will be very
target you must deploy the system. low.
Nextel Engineering has developed NCWare software in The standard defines two levels of interfaces. At a
order to comply with former requirements. NCWare is lower level, it defines a Data Centric Publish Subscribe
a real time networking middleware based on the (DCPS) whose goal is to provide an efficient, scalable,
publish/subscribe paradigm which, through a single predictable, and resource aware data distribution
API, unifies DDS and HLA standards. The similarities mechanism. Then, on top of the DCPS, it defines the
between both standards [6] make them match perfectly. Data Local Reconstruction Layer (DLRL), an optional
interface which automates the reconstruction of data,
1.1. The OMG DDS standard.
locally, from updates received, and allows the
The DDS is a publish-subscribe data distribution application to access data as if it was local.
architecture which allows to connect asynchronously
and anonymously very large sets of distributed nodes of Object Model Profile
a communications mesh (domain participants).
Data Local Reconstruction Layer (DLRL)
A domain participant may simultaneously publish and
subscribe to typed data-streams identified by some Ownership Persistence Content-Subscription
names called “topics”.
The importance of DDS relies in its reliable design. Minimum Profile
DDS QoS3 parameters specify the degree of coupling Data Centric Publish-Subscribe (DCPS)
between participants, properties of the overall model
and of the topics themselves. So, DDS defines a Fig. 2 – DDS architecture
communications relationship between publishers and DDS is fundamentally designed to work over unreliable
subscribers which is: transports such as UDP or wireless networks.
• Decoupled in space (nodes can be anywhere) Besides, central servers or special nodes are not
• Decoupled in time (delivery of data may be required, so all the communication is direct between the
immediately after publication or later) nodes, also known as Peer-to-Peer or P2P.
• Decoupled in flow (delivery may be reliable DDS scheme supports both unicast and multicasting IP
and can be done in a fully controlled networks, so latency of data between nodes will be
bandwidth) insignificant.
Since its introduction in 2003, DDS has enjoyed rapid
adoption as a standard for integrating and developing
high-performance real-time systems. It is a mandated
standard for publish-subscribe messaging by the U.S.
Department of Defense (DoD) Information Technology
Standards Registry (DISR). Programs that have
adopted DDS include the U.S. Navy's Open
Architecture Computing Environment (OACE) and
FORCEnet; the U.S. Army's Future Combat Systems
(FCS); and the joint Air Force, Navy and DISA Net-
Centric Enterprise Solutions for Interoperability
(NESI).
Fig. 1 - DDS performs the network tasks for the application
Scalability is increased thanks to the multiple
independent data channels identified by “keys”. This 1.2. The IEEE HLA standard.
allows nodes to subscribe to many (maybe thousands)
of similar data streams with a single subscription. Originally developed by the US Department of
When the data arrives, the middleware can sort it by the Defense, HLA is the prescribed standard for military
key and deliver it for efficient processing. simulation interoperability within the US. It is also the
standard for simulation interoperability within the
3 NATO. The HLA standard has also become a non-
Quality-of-Service
3. military standard through its civil standardization the middleware knows the complete data
through IEEE 1516. model.
o It gives a high level view of the system to all
users, instead of knowing only portions of it.
The underlying HLA architecture is a publish/subscribe
one where elements publish data onto the bus to be • HLA semantics define federations and federates,
picked up by other units that subscribe to that data, the first being isolated areas where federates
commonly referred to as 'federated data'. This allows a (applications) share their data. A federate has to be
system to be distributed, avoiding the bottlenecks of a connected to a federation to send/receive data from
client-server architecture and allowing the system to be other federates being connected to the same
more easily scalable. federation. With the same meaning, applications
using DDS are Entities, and federations are
HLA enables you to reuse existing systems for new
Domains. In the rest of the paper, a simulation will
purposes. You can also mix different programming
be a group of applications in either a domain or a
languages and operating systems. HLA supersedes
federation. The Domain/Federation concept allows
several earlier standards such as DIS and ALSP.
having many simulations at the same time without
One of its main components is the HLA Run Time interfering with each other.
Infrastructure (HLA-RTI), what is used to interoperate
simulator systems together over a WAN4, and, in some • All other HLA features such as instance discovery,
cases, it is even being seen as a way to link the not available on DDS, had to be implemented.
processing elements within individual simulators. 2. NCWare
But unfortunately, the HLA-RTI wasn't designed to NCWare is basically an interoperability middleware
reach the high levels of performance (low latencies as intended to be used not only in M&S environments but
well as deterministic responses are critical issues when also as a data-centric approach in the design and
we are dealing with Real Time systems). So using DDS development of distributed systems architectures, as it
as an underlying transport is a good approach for this used to be in NCW[1]/NEC[2] scenarios.
problem, because its similar structure allows it to work
very well alongside, and in co-operation with, the 2.1. Features
existing HLA standard. 2.1.1. Simplicity
1.3. Joining HLA and DDS One of the main drawbacks of communication systems
5
In order to join both standards to be used in is often the complexity of its API. One key objective of
simulation, NEXTEL Engineering decided to develop NCWare was to implement a very simple API. The
NCWare software keeping the HLA semantics. This user, who simply wants to send and/or receive data
approach implies the following: from the data model, shouldn’t have to care about
ports, addresses, servers, etc. The user just should have
• Data is organized, as HLA defines, in objects, and to tell the system: hey, I have the following type of data
interactions. Objects are composed of attributes, available, if anyone wants it. Or, it would tell the
and interactions of parameters. system: Hello, I need data of the following type. If
• All data being used in a simulation is defined in a anyone is sending it, please send it also to me.
data model, independent for applications and This is done by the Declaration of publications or
runtime middleware. This feature has many subscriptions. In the former, the user tells the system
advantages: that we might send some data of a type. In the later, the
o The design of the systems is centered in the user tells the system he wants data of a type.
data, not in objects or procedures. In this way After the declarations, the publisher just has to generate
it is easy to decouple features between new data and send it, and all the subscribers of this type
differentes applications and therefore to reuse of data will receive it.
them in other systems.
Experienced HLA users might need using more HLA
o It defines a clear interface for applications. features, such as synchronization, save and restore
Each application knows their publish- points, ownership and instance discovery. All those
subscribe interface with the middleware, and features are available to the user through simple
declaration of reception events, and notifications.
4
Wide Area Network
5
HLA and DDS
4. 2.1.2. Real-Time and QoS • DDS-compliant, real time, fault tolerant,
physical layer independent, peer-to-peer
DDS standard was conceived for Real-Time data
communications for fully distributed
transfer. DDS offers many QoS features starting from
embedded systems
time deadlines and transmission modes: reliable, best-
effort, which can be used in both unicast and multicast HLA or Visual RT Simulation
network modes. simulation or Visual
application application
HLA transmission modes were only reliable and best NCWare SIM
effort. NCWare RTI NCWare SIM
RTI RTI
Mäk Pitch
DDS can also define deadline times, which define the NCWare Core
NCWare Core
maximum reception time for a single data, separation
times, which define the minimum reception time. COTS HLA RTI Distributed systems
applications and embedded
NCWare allows the configuration of these QoS features applications
NCWare RTI
to be done in the Data Model, and therefore all entities
agree of using them. NCWare Core NCWare Core
2.1.3. Interoperability between different HLA’s Fig.3 - Combinations of the layers/components
RTI. of NCWare components
Although HLA Standard was defined, only was defined 2.2.1. NCWare Core
the services for developers but not the network
transport protocol. Thus, two applications using RTIs NCWare Core is the lowest level abstraction layer of
from different providers are not capable to NCWare. It uses the concept of Connectors, which
communicate between each other. The work done on allow the user to establish the communications very
HLA standard has been to define a new dynamic link easily with different DDS vendors.
compatible API which solves all problems. With this Its main objectives are the following:
new API it will be possible to use any of the different
RTI versions without the need of adapting to them. • Join different DDS vendors on a single, very
simple to use API.
But, since many HLA applications have been
developed so far, the incompatibility problem is still • Offer the necessary methods to adjust the QoS for
there. When developing a federation it had to be your applications and also allows you to fulfill
decided which RTI will be used. One of the objectives them in a simple configuration file.
of NCWare was to allow the user to postpone this • A real-time communication system, capable to
decision, and to be able at deployment time to use any send an receive data with QoS features,
of the available RTIs.
2.2.2. NCWare RTI
NCWare allows using many RTIs from different
vendors without the need of adapting the applications. NCWare RTI is an HLA Run Time Infrastucture
Therefore, an application will not depend on the RTI designed for real time performance in large federations.
used, and it will be available to communicate with other It provides an IEEE 1516 HLA API for virtual and live
HLA federates. simulations. The use of OMG DDS standard as
transport protocol offers all the functionality of a HLA
2.2. Architecture overview RTI with the features, performance, power and
It has an n-tier architecture in order to cover three reliability of DDS.
different scenarios: Its main technical features include:
• HLA-compliant federation of simulation - HLA RTI designed for real time performance
systems, enabling the interoperability of HLA in distributed applications (QoS enabled)
federates, using different RTIs available in the
M&S market, such as MÄK High - HLA RTI implementing IEEE 1516-2000
Performance RTI, Pitch pRTI y RTI NG Pro, - RTPS wire protocol as transport mechanism
among other RTI which implements DMSO for HLA as defined by OMG DDS
HLA 1.3 and/or IEEE 1516 API specifications specifications.
• Real time communications for distributed non - Full HLA services support (federation
HLA simulation systems through its own management, declaration management, object
DDS-based transport protocol
5. management, ownership management) as • Helps the developers to map between data models
required in virtual & live simulations. used in simulations. This mapping is one of the key
elements which allow simulations interoperability.
2.2.3. NCWare Sim
Since each simulation has its own data model,
NCWare Sim is the highest level abstraction layer of objects and attributes, which never match
NCWare. It offers a simulation-oriented layer similar to perfectly, some mapping between them need to be
Core’s one but allowing the users to access to several done. But many problems arise on mapping:
HLA services through different RTI vendors or DDS
o One class on one data model may map to one or
performance and fine grained QoS through NCWare
many classes on the other data model and
Core layer.
viceversa. This affects not only to data
NCWare Sim offers a single publish-susbcribe API, transmission and reception, but also to
independent of HLA and DDS. Therefore, the discovery, creation and deletion.
developer can use NCWare Sim as a real time
o Data might be defined in using different
middleware for the distribution of data within a
measurement units. A conversion to translate
simulator. The developer choose the standard to use for
units might be also necessary on each
the integration (HLA or DDS) with other systems
transmission.
through configuration files.
• Filters, allowing only relevant data to go to other
simulations. The filtering feature allows a
significant increase of performance as well as
security.
• Joins not only user data, but also HLA services.
The use of NCWare Gateway greatly expands the
possibilities of interconnection. The rest of the section
will describe many of these possibilities, starting from
the simplest to more complex scenarios.
Fig.4 – NCWare SIM interfaces with DDS & HLA
It allows the developer:
2.2.5. NCWare Performance Tool
- interfacing the same way with any COTS
HLA compliant RTI; A critical issue concerning to any communications
library is reliability and performance.
- accessing to high value features of QoS
(persistence, ownership, filtering, fault It is not possible to say that a library is better than
tolerance) another without comparing them. So it’s essential to
have testing & benchmarking tools to measure
- Modeling simulation data into HLA and DSS parameters of efficiency, performance and reliability.
100% compliant formats, within a Graphical
User’s Interface. NCWare Performance Tool allows:
- Mapping HLA object data models into OMG - To get performance comparisons between
DDS IDL. different versions of DDS implementations
(RTI DDS, TAO DDS or future ones)
Furthermore, NCWare is the underlying technology for
NEXTEL’s SimWare framework of M&S tools (see - To get performance comparisons between the
[9]) existent OS (Windows, Linux, etc.)
2.2.4. NCWare Gateway - To get performance comparisons between
available COTS HLA RTI (Pitch, Mäk,
Jointly with the NCWare, an application called DMSO, NCWare RTI)
NCWare Gateway was developed. Its objective is to
join two different simulations. NCWare Gateway - To evaluate performance cost for each
simply resends all data received on one simulation to NCWare layer (NCWare Core, NCWare SIM,
the other and viceversa. NCWare RTI)
NCWare Gateway performs the following tasks: 3. Scenarios of application
• Joins two simulations 3.1. DDS pure simulation
6. The basic scenario of application would be a simulation 3.4 Sharing data
using only DDS. The main advantage of this simulation
Now, consider the following scenario: you developed
is its high performance.
an application which generates some data. Since you
used NCWare, you might be using it on HLA
NCWare Core federations or DDS domains. The good thing about it is
Simulation
DDS
Module 2 that this application can send data to one or many
DDS simulations, and therefore sharing its data. An example
NCWare SIM
SIMULAT of it could be a weather simulator, which might be used
ION
on a single simulator, or could be used on a complex
NCWare Core
network consisting of many simulations connected by
DDS
Simulation
Module 1 the NCWare Gateway. Weather data will be shared
among all simulations.
Fig. 5 – DDS pure simulation scenario 3.5. Other scenarios
Applications can exchange data at much faster rates Some other scenarios would include the possibility of
than in a HLA simulation. testing all applications in a single simulation, and then
distributing them as wanted, or joining many HLA
federations which use different RTI implementations.
3.2 DDS simulation acting as an HLA federate
4. Applications
An evolution of this scenario would be to attach it to an
NCWare and NCWare Gateway are part of SimWare
external HLA federation. For example, a real-time
architecture. Within this architecture, many other
driving simulator (DDS) could be attached to a
federation including many other vehicles and people. elements interconnected by the NCWare, such as those
described in [8], [9] and development tools such as
SimDeveloper [10] have been produced and have been
Simulation Simulation Federate
Module 1 Module 2 1 successfully used in some scenarios. More are available
Federate Federate
2 3 at [9].
NCWare SIM
NCWare
5. Conclusion and further work
NCWare Core NCWare Core
Gateway
DDS DDS DDS HLA
This paper explained the key features of NCWare,
which make it an ideal for interconnecting simulations.
The single API of NCWare allows true independency
of communication system used.
DDS SIMULATION HLA FEDERATION
The paper also showed some example scenarios of
interconnection, as well as some real applications in
which NCWare has been successfully used.
Fig. 6 – Mixed DDS-HLA scenario
Future work should expand the NCWare Gateway
This attachment can be easily done using the NCWare
capabilities, including interoperability with:
Gateway. The main advantages of this connection are
that the driving simulator is still executed at real-time, - standards such as XMPP6, AMQP7 and JMS8
and that the internal data is kept inside the DDS
- synchronous messaging systems based in web
simulation. The gateway is filtering the data and
services (SOAP, REST, XML RPC, etc)
sending only to the HLA federation the relevant data
(for example vehicle type, position and speed). On the - traditional client-server technologies like CORBA
HLA side, only the object ‘Car’ is seen.
- In-memory databases (e.g. Oracle TimesTen)
3.3. Reusing legacy applications on DDS simulations
A third scenario presents the reusability of current
applications. A great effort has been done developing
6
HLA applications. DDS implies a great performance Extensible Messaging and Presence Protocol. See
improvement. Migrating an application to DDS should IETF RFCs 3920, 3921, 3922 and 3923
not imply adapting and rebuilding the application to it. 7
Advanced Message Queuing Protocol. See
Instead of that, the use of the NCWare Gateway can be
www.amqp.org
used to reuse our HLA application in a DDS simulation
8
without having to change a single line. Java Message Service
7. - enterprise messaging middleware like BEA’s
MessageQ™, IBM’s MQSeries™ and another
proprietary pubsub systems like Tibco’s
Rendezvous™
6. References
[1] Alberts, Gartska, Stein: “Network Centric
Warfare” CCRP, 1999.
[2] Dr. Barry Sowerbutts: “Network Enabled
Capability: Delivering Network Enabled
Capability Now”, Roke Manor Research
www.roke.co.uk.
[3] Gerardo Pardo-Castellote, Ph.D. and Brett
Murphy: “New Networking Standard from OMG
Will Simplify Distributed Simulation
Development”.
[4] IEEE Standard for Modeling and Simulation
(M&S) High Level Architecture (HLA)---
Framework and Rules, IEEE Std 1516-2000.
[5] OMG. Data Distribution Service for Real-time
Systems Specification (DDS) 04-12-02, December
2004. Available at www.omg.org.
[6] Rajive Joshi, Ph.D. Gerardo-Pardo Castellote,
Ph.D. A Comparison and Mapping of Data
Distribution Service and High-Level Architecture.
www.rti.com
[7] Gerardo Pardo-Castellote, Ph.D. DDS Spec Outfits
Publish-Subscribe Technology for the GIG
[8] Carlos Rodriguez, Ignacio Seisdedos. MSOE:
Basics for development of Mission and Simulation
Support Software. 06E-SIW-22
[9] Jose María López, Ignacio Seisdedos, Pedro del
Barrio. Using Open software architectures for
developing simulation systems : a Way to the
interoperability of simulations at subsystem level,
September 2008
[10] Fernando Cartechini, SIMDEVELOPER: An M&S
development tool to boost interoperability and
reusability. 06E-SIW-20
[11] Joe Sorroche, Jerry Szulinski. Bandwidth
reduction techniques used in DIS exercises. 04E-
SIW-025
[12] Dan CHEN, Stephen John TURNER, Boon Ping
GAN, Wentong CAI, Malcolm Yoke Hean LOW,
Junhu WEI. Management of Simulation Cloning
in HLA based Distributed Simulations. 04E-SIW-
010