The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform

Mairtin O'droma - One of the best experts on this subject based on the ideXlab platform.

  • Advertisement Data Management and Application Design in WBCs
    Journal of Software, 2011
    Co-Authors: Ivan Ganchev, Mairtin O'droma
    Abstract:

    This paper describes the advertisement data management and the corresponding intelligent Application design implementation for wireless billboard channel (WBC) in the emerging ubiquitous consumer wireless world (UCWW). The algorithms and Application runs at the Application enabler sub-layer of a WBC service provider (WBC-SP)'s node for broadcasting wireless services to mobile terminals (MTs). The advertisement data is formatted by abstract syntax notation one (ASN.l) and organized by segments with WBC algorithms to reduce the mobile user (MU)'s access time. The intelligent Application was used to run the data management algorithms, which is implemented with three Tiers: a service discovery and maintenance Tier acting as a client-server distributed system for data collection and organization; an intelligent Application Tier holding all business logic and common Application programming interfaces (APIs); and a multi-agent systems (MAS) Tier maintaining the advertisement, discovery and association (ADA) agents' lifecycle, and supplying directory facilitator services and message transport services. The performance evaluation of the proposed data management and Application architecture details are provided.

  • An Intelligent Application for the WBC Application Enabler Sub-layer: Design and Implementation
    Computer Science for Environmental Engineering and EcoInformatics, 2011
    Co-Authors: Ivan Ganchev, Mairtin O'droma
    Abstract:

    This paper describes the design and implementation of a new intelligent Application, which runs at the Application enabler sub-layer of a wireless billboard channel service provider’s (WBC-SP) node. The Application is implemented with three Tiers: a service discovery and maintenance Tier acting as a client-server distributed system for data collection and organization; an intelligent Application Tier holding all business logic and common Application programming interfaces (APIs); and a multi-agent systems (MAS) Tier maintaining the advertisement, discovery and association (ADA) agents’ lifecycle.

  • CCNC - Intelligent Software Architecture for the Service Layer of Wireless Billboard Channels
    2009 6th IEEE Consumer Communications and Networking Conference, 2009
    Co-Authors: Ivan Ganchev, Mairtin O'droma
    Abstract:

    This paper proposes an intelligent software architecture for the service layer of wireless billboard channels (WBCs), which facilitates the IP datacasting (IPDC) of services' advertisements in a ubiquitous consumer wireless world (UCWW). The new WBC service layer's architecture consists of three Tiers: a service discovery and maintenance Tier acting as a client-server distributed system for data collection and organization; an intelligent Application Tier holding all business logic and common Application programming interfaces (APIs); and a multi-agent system Tier maintaining the advertisement, discovery and association (ADA) agents' lifecycle. A message channel, a blackboard and a gateway agent are shared by all three Tiers thus enabling ADA processing in a highly efficient way.

  • Building a heterogeneous software architecture for the WBC service layer
    China-Ireland International Conference on Information and Communications Technologies (CIICT 2008), 2008
    Co-Authors: Ivan Ganchev, Mairtin O'droma
    Abstract:

    This paper proposes a heterogeneous software architecture for the service layer of wireless billboard channels (WBCs), which facilitates the IP datacasting (IPDC) of services' advertisements in a ubiquitous consumer wireless world (UCWW). The WBC service provider's central node 'pushes' these advertisements over the WBCs to the mobile user terminals/nodes, which discover or update service offerings. Each user is thus supported in decision-making of the "best" service offerings matching their profile and their terminal's composite capabilities / preferences profile (CC/PP). The new WBC architecture consists of three Tiers: a service discovery and maintenance Tier acting as a client-server distributed system for data collection and organization; an intelligent Application Tier holding all business logic and common Application programming interfaces (APIs); and a multi-agent system Tier maintaining the advertisement, discovery and association (ADA) agents' lifecycle, and supplying 'directory facilitator' (DF) services and message transport services. A message channel, a blackboard and a gateway agent are shared by all three Tiers thus enabling ADA processing in a highly efficient way.

  • A HTTP-based medical image server compatible with evolving wireless communications infrastructures
    China-Ireland International Conference on Information and Communications Technologies (CIICT 2007), 2007
    Co-Authors: Ivan Ganchev, Mairtin O'droma, Robert J.t. Sadleir
    Abstract:

    This paper proposes a HTTP-based medical image server for the analysis, processing and transmission of medical images (e.g. DfCOM, ANALYZES, CTC) realized on the server side, and displaying the results on the client side (handheld terminals, laptops), using the existing or upcoming wireless/wired Internet/Intranet telecommunications infrastructures. The medical image server runs on a lightweight 3-Tier J2EE architecture, fn the persistence Tier, a number of image archives, a relational database and an index database are used for saving the medical images, user profiles and index data respectively, fn the Application Tier, a set of APfs supports medical images loading, analysis and processing, helped by an intelligent business-logic API acting as a bridge between the persistence Tier and the web Tier, fn the web Tier, an Applet/Xlet, running on a laptop/handheld terminal, communicates with the server side using the HTTP protocol. With this HTTP-based medical image server, users can upload, retrieve, analyze, and process medical images behind firewalls in an effective and secure way.

Sig Studio - One of the best experts on this subject based on the ideXlab platform.

  • The Services Sharing of Remote Sensing Data in Digital City
    Computer Science, 2007
    Co-Authors: Sig Studio
    Abstract:

    As important spatial information resource, the sharing of remote sensing data is essential to realize digital city. The structure of remote sensing sharing is proposed in this paper, which is composed of management Tier, data Tier, service Tier and Application Tier. On the following the key technologies of service sharing platform are discussed and a prototype system has been implemented to prove the feasibility of the architecture.

  • An Open Service-Oriented Architecture for LBS
    Computer Science, 2007
    Co-Authors: Sig Studio
    Abstract:

    The architecture of location-based service should be developed to meet the need of SOA and Web services. This paper proposes an open architecture of LBS based on services sharing, which composed of data Tier, service Tier and Application Tier. The basic service and complex service in LBS is discussed and data visiting, analyzing and computing can all be visited as services by LBS Applications. Services composition is proposed to model the complex service and workflow, and then the service instance selection is implemented in the execution of process. In the end a prototype system is given to validate the feasibility of the architecture.

Rodger Lea - One of the best experts on this subject based on the ideXlab platform.

  • Partitioning of web Applications for hybrid cloud deployment
    Journal of Internet Services and Applications, 2014
    Co-Authors: Nima Kaviani, Eric Wohlstadter, Rodger Lea
    Abstract:

    Hybrid cloud deployment offers flexibility in trade-offs between the cost-savings/scalability of the public cloud and control over data resources provided at a private premise. However, this flexibility comes at the expense of complexity in distributing a system over these two locations. For multi-Tier web Applications, this challenge manifests itself primarily in the partitioning of Application- and database-Tiers. While there is existing research that focuses on either Application-Tier or data-Tier partitioning, we show that optimized partitioning of web Applications benefits from both Tiers being considered simultaneously. We present our research on a new cross-Tier partitioning approach to help developers make effective trade-offs between performance and cost in a hybrid cloud deployment. The general approach primarily benefits from two technical improvements to integer-programming based Application partitioning. First, an asymmetric cost-model for optimizing data transfer in environments where ingress and egress data-transfer have differing costs, such as in many infrastructure as a service platforms. Second, a new encoding of database query plans as integer programs, to enable simultaneous optimization of code and data placement in a hybrid cloud environment. In two case studies the approach results in up to 54% reduction in monetary costs compared to a premise only deployment and 56% improvement in response time compared to a naive partitioning where the Application-Tier is deployed in the public cloud and the data-Tier is on private infrastructure.

  • Cross-Tier Application and Data Partitioning of Web Applications for Hybrid Cloud Deployment
    2013
    Co-Authors: Nima Kaviani, Eric Wohlstadter, Rodger Lea
    Abstract:

    Hybrid cloud deployment offers flexibility in trade-offs between the cost-savings/scalability of the public cloud and control over data resources provided at a private premise. However, this flexibility comes at the expense of complexity in distributing a system over these two locations. For multi-Tier web Applications, this challenge manifests itself primarily in the partitioning of Application- and database-Tiers. While there is existing research that focuses on either Application-Tier or data-Tier partitioning, we show that optimized partitioning of web Applications benefits from both Tiers being considered simultaneously. We present our research on a new cross-Tier partitioning approach to help developers make effective trade-offs between performance and cost in a hybrid cloud deployment. In two case studies the approach results in up to 54% reduction in monetary costs compared to a premise only deployment and 56% improvement in execution time compared to a naïve partitioning where Application-Tier is deployed in the cloud and data-Tier is on private infrastructure.

  • Middleware - Cross-Tier Application and Data Partitioning of Web Applications for Hybrid Cloud Deployment
    Middleware 2013, 2013
    Co-Authors: Nima Kaviani, Eric Wohlstadter, Rodger Lea
    Abstract:

    Hybrid cloud deployment offers flexibility in trade-offs between the cost-savings/scalability of the public cloud and control over data resources provided at a private premise. However, this flexibility comes at the expense of complexity in distributing a system over these two locations. For multi-Tier web Applications, this challenge manifests itself primarily in the partitioning of Application- and database-Tiers. While there is existing research that focuses on either Application-Tier or data-Tier partitioning, we show that optimized partitioning of web Applications benefits from both Tiers being considered simultaneously. We present our research on a new cross-Tier partitioning approach to help developers make effective trade-offs between performance and cost in a hybrid cloud deployment. In two case studies the approach results in up to 54% reduction in monetary costs compared to a premise only deployment and 56% improvement in execution time compared to a naive partitioning where Application-Tier is deployed in the cloud and data-Tier is on private infrastructure.

Anna Liu - One of the best experts on this subject based on the ideXlab platform.

  • Application managed database replication on virtualized cloud environments
    International Conference on Data Engineering, 2012
    Co-Authors: Liang Zhao, Sherif Sakr, Alan Fekete, Hiroshi Wada, Anna Liu
    Abstract:

    One among several patterns that are common for Applications being deployed in cloud platforms is to take an existing Application designed for a conventional data center, and then port it to the cloud with minimal changes. When this is done, the Application Tier can easily take advantage of the elasticity and scale provided by the cloud, but the data management layer, being stateful, faces more issues. In this paper, we explore experimentally the limits to scaling for an Application that itself manages database replicas each placed in a virtual machine in the cloud (exactly following the design used when the Application would be deployed on an in-house cluster). We characterize important limits in the load on the master copy, the workload imposed on each slave copy when processing updates from the master, and also from the increasing staleness of replicas.

  • ICDE Workshops - Application-Managed Database Replication on Virtualized Cloud Environments
    2012 IEEE 28th International Conference on Data Engineering Workshops, 2012
    Co-Authors: Liang Zhao, Sherif Sakr, Alan Fekete, Hiroshi Wada, Anna Liu
    Abstract:

    One among several patterns that are common for Applications being deployed in cloud platforms is to take an existing Application designed for a conventional data center, and then port it to the cloud with minimal changes. When this is done, the Application Tier can easily take advantage of the elasticity and scale provided by the cloud, but the data management layer, being stateful, faces more issues. In this paper, we explore experimentally the limits to scaling for an Application that itself manages database replicas each placed in a virtual machine in the cloud (exactly following the design used when the Application would be deployed on an in-house cluster). We characterize important limits in the load on the master copy, the workload imposed on each slave copy when processing updates from the master, and also from the increasing staleness of replicas.

Ivan Ganchev - One of the best experts on this subject based on the ideXlab platform.

  • Advertisement Data Management and Application Design in WBCs
    Journal of Software, 2011
    Co-Authors: Ivan Ganchev, Mairtin O'droma
    Abstract:

    This paper describes the advertisement data management and the corresponding intelligent Application design implementation for wireless billboard channel (WBC) in the emerging ubiquitous consumer wireless world (UCWW). The algorithms and Application runs at the Application enabler sub-layer of a WBC service provider (WBC-SP)'s node for broadcasting wireless services to mobile terminals (MTs). The advertisement data is formatted by abstract syntax notation one (ASN.l) and organized by segments with WBC algorithms to reduce the mobile user (MU)'s access time. The intelligent Application was used to run the data management algorithms, which is implemented with three Tiers: a service discovery and maintenance Tier acting as a client-server distributed system for data collection and organization; an intelligent Application Tier holding all business logic and common Application programming interfaces (APIs); and a multi-agent systems (MAS) Tier maintaining the advertisement, discovery and association (ADA) agents' lifecycle, and supplying directory facilitator services and message transport services. The performance evaluation of the proposed data management and Application architecture details are provided.

  • An Intelligent Application for the WBC Application Enabler Sub-layer: Design and Implementation
    Computer Science for Environmental Engineering and EcoInformatics, 2011
    Co-Authors: Ivan Ganchev, Mairtin O'droma
    Abstract:

    This paper describes the design and implementation of a new intelligent Application, which runs at the Application enabler sub-layer of a wireless billboard channel service provider’s (WBC-SP) node. The Application is implemented with three Tiers: a service discovery and maintenance Tier acting as a client-server distributed system for data collection and organization; an intelligent Application Tier holding all business logic and common Application programming interfaces (APIs); and a multi-agent systems (MAS) Tier maintaining the advertisement, discovery and association (ADA) agents’ lifecycle.

  • CCNC - Intelligent Software Architecture for the Service Layer of Wireless Billboard Channels
    2009 6th IEEE Consumer Communications and Networking Conference, 2009
    Co-Authors: Ivan Ganchev, Mairtin O'droma
    Abstract:

    This paper proposes an intelligent software architecture for the service layer of wireless billboard channels (WBCs), which facilitates the IP datacasting (IPDC) of services' advertisements in a ubiquitous consumer wireless world (UCWW). The new WBC service layer's architecture consists of three Tiers: a service discovery and maintenance Tier acting as a client-server distributed system for data collection and organization; an intelligent Application Tier holding all business logic and common Application programming interfaces (APIs); and a multi-agent system Tier maintaining the advertisement, discovery and association (ADA) agents' lifecycle. A message channel, a blackboard and a gateway agent are shared by all three Tiers thus enabling ADA processing in a highly efficient way.

  • Building a heterogeneous software architecture for the WBC service layer
    China-Ireland International Conference on Information and Communications Technologies (CIICT 2008), 2008
    Co-Authors: Ivan Ganchev, Mairtin O'droma
    Abstract:

    This paper proposes a heterogeneous software architecture for the service layer of wireless billboard channels (WBCs), which facilitates the IP datacasting (IPDC) of services' advertisements in a ubiquitous consumer wireless world (UCWW). The WBC service provider's central node 'pushes' these advertisements over the WBCs to the mobile user terminals/nodes, which discover or update service offerings. Each user is thus supported in decision-making of the "best" service offerings matching their profile and their terminal's composite capabilities / preferences profile (CC/PP). The new WBC architecture consists of three Tiers: a service discovery and maintenance Tier acting as a client-server distributed system for data collection and organization; an intelligent Application Tier holding all business logic and common Application programming interfaces (APIs); and a multi-agent system Tier maintaining the advertisement, discovery and association (ADA) agents' lifecycle, and supplying 'directory facilitator' (DF) services and message transport services. A message channel, a blackboard and a gateway agent are shared by all three Tiers thus enabling ADA processing in a highly efficient way.

  • A HTTP-based medical image server compatible with evolving wireless communications infrastructures
    China-Ireland International Conference on Information and Communications Technologies (CIICT 2007), 2007
    Co-Authors: Ivan Ganchev, Mairtin O'droma, Robert J.t. Sadleir
    Abstract:

    This paper proposes a HTTP-based medical image server for the analysis, processing and transmission of medical images (e.g. DfCOM, ANALYZES, CTC) realized on the server side, and displaying the results on the client side (handheld terminals, laptops), using the existing or upcoming wireless/wired Internet/Intranet telecommunications infrastructures. The medical image server runs on a lightweight 3-Tier J2EE architecture, fn the persistence Tier, a number of image archives, a relational database and an index database are used for saving the medical images, user profiles and index data respectively, fn the Application Tier, a set of APfs supports medical images loading, analysis and processing, helped by an intelligent business-logic API acting as a bridge between the persistence Tier and the web Tier, fn the web Tier, an Applet/Xlet, running on a laptop/handheld terminal, communicates with the server side using the HTTP protocol. With this HTTP-based medical image server, users can upload, retrieve, analyze, and process medical images behind firewalls in an effective and secure way.