The Experts below are selected from a list of 873 Experts worldwide ranked by ideXlab platform

Karl Andersson - One of the best experts on this subject based on the ideXlab platform.

  • Indoor Taxi-Cab: Real-Time Indoor Positioning and Location-Based Services with
    2016
    Co-Authors: Caner Kilinc, Mahmud Mostafa, Raihan Ul-islam, Kashif Shahzad, Karl Andersson
    Abstract:

    Abstract—Positioning and routing in outdoors environment is still challenging especially in complex buildings, where a number of buildings are combined with tunnels and bridges, and the GPS signal is unreachable. Looking for a particular room in an unfamiliar huge indoor environment or a product in an enormous store is time wasting and a real life problem that everybody faces on a daily basis. This paper presents a solution using the Ekahau positioning system and Android OS with an Intermediary Server, which acts between these two systems to provide actual room level positioning by a mathematical modeling technique. The system also provides the shortest path to a target destination by using Dijkstra's search algorithm. The optimal distance between the locations is modeled based on the Taxi-cab geometry distance definition for the mobile clients. Additionally, the users can also display the shortest path for items in the vicinity such as coffee machines, etc. The proposed solution has been evaluated in a real life setting at basement floor level

Andersson Karl - One of the best experts on this subject based on the ideXlab platform.

  • Indoor taxi-cab : real-time Indoor positioning and location-based services with Ekahau and Android OS
    'Institute of Electrical and Electronics Engineers (IEEE)', 2014
    Co-Authors: Kilinc Caner, Mostafa, Seraj Al Mahmud, Raihan Ul Islam, Shahzad Kashif, Andersson Karl
    Abstract:

    Positioning and routing in an outdoors environment is still challenging especially in complex buildings, where a number of buildings are combined with tunnels and bridges, and the GPS signal is unreachable. Wasting time for looking for a particular room in an unfamiliar huge indoor environment or a product in an enormous store is a real life problem that everybody faces on daily basis. The paper represents a solution for addressed problem by using Ekahau positioning systems and Android OS through an Intermediary Server, which acts between these two systems to provide actual room level position on a map by mathematical modeling technique. The system also based on request provides shortest path for a certain destination by computing Dijkstra's search algorithm. The distance between the locations is defined based on Taxi-cab geometry distance definition for the mobile clients. Additionally, the users can also display shortest path for some nearest items such as coffee machine. The implemented system evaluations are carried out in a basement floor on the site.Godkänd; 2014; 20140307 (karand)

Stavros Koubias - One of the best experts on this subject based on the ideXlab platform.

  • a dynamic context aware access control architecture for e services
    Computers & Security, 2006
    Co-Authors: V Kapsalis, Loukas Hadellis, Dimitris Karelis, Stavros Koubias
    Abstract:

    The universal adoption of the Internet and the emerging web services technologies constitutes the infrastructure that enables the provision of a new generation of e-services and applications. However, the provision of e-services through the Internet imposes increased risks, since it exposes data and sensitive information outside the client premises. Thus, an advanced security mechanism has to be incorporated, in order to protect this information against unauthorized access. In this paper, we present a context-aware access control architecture, in order to support fine-grained authorizations for the provision of e-services, based on an end-to-end web services infrastructure. Access permissions to distributed web services are controlled through an Intermediary Server, in a completely transparent way to both clients and protected resources. The access control mechanism is based on a Role-Based Access Control (RBAC) model, which incorporates dynamic context information, in the form of context constraints. Context is dynamically updated and provides a high level of abstraction of the physical environment by using the concepts of simple and composite context conditions. Also, the paper deals with implementation issues and presents a system that incorporates the proposed access control mechanism in a web services infrastructure that conform to the OPC XML-DA specification.

Caner Kilinc - One of the best experts on this subject based on the ideXlab platform.

  • Indoor Taxi-Cab: Real-Time Indoor Positioning and Location-Based Services with
    2016
    Co-Authors: Caner Kilinc, Mahmud Mostafa, Raihan Ul-islam, Kashif Shahzad, Karl Andersson
    Abstract:

    Abstract—Positioning and routing in outdoors environment is still challenging especially in complex buildings, where a number of buildings are combined with tunnels and bridges, and the GPS signal is unreachable. Looking for a particular room in an unfamiliar huge indoor environment or a product in an enormous store is time wasting and a real life problem that everybody faces on a daily basis. This paper presents a solution using the Ekahau positioning system and Android OS with an Intermediary Server, which acts between these two systems to provide actual room level positioning by a mathematical modeling technique. The system also provides the shortest path to a target destination by using Dijkstra's search algorithm. The optimal distance between the locations is modeled based on the Taxi-cab geometry distance definition for the mobile clients. Additionally, the users can also display the shortest path for items in the vicinity such as coffee machines, etc. The proposed solution has been evaluated in a real life setting at basement floor level

Kilinc Caner - One of the best experts on this subject based on the ideXlab platform.

  • Indoor taxi-cab : real-time Indoor positioning and location-based services with Ekahau and Android OS
    'Institute of Electrical and Electronics Engineers (IEEE)', 2014
    Co-Authors: Kilinc Caner, Mostafa, Seraj Al Mahmud, Raihan Ul Islam, Shahzad Kashif, Andersson Karl
    Abstract:

    Positioning and routing in an outdoors environment is still challenging especially in complex buildings, where a number of buildings are combined with tunnels and bridges, and the GPS signal is unreachable. Wasting time for looking for a particular room in an unfamiliar huge indoor environment or a product in an enormous store is a real life problem that everybody faces on daily basis. The paper represents a solution for addressed problem by using Ekahau positioning systems and Android OS through an Intermediary Server, which acts between these two systems to provide actual room level position on a map by mathematical modeling technique. The system also based on request provides shortest path for a certain destination by computing Dijkstra's search algorithm. The distance between the locations is defined based on Taxi-cab geometry distance definition for the mobile clients. Additionally, the users can also display shortest path for some nearest items such as coffee machine. The implemented system evaluations are carried out in a basement floor on the site.Godkänd; 2014; 20140307 (karand)