Changing demographic patterns warrant suitable Intelligent Transportation Systems (ITS) for enabl... more Changing demographic patterns warrant suitable Intelligent Transportation Systems (ITS) for enabling diverse trips. The general area of e-government has focused on efficient ways to deliver electronic information and services. This study considers a method for end-user involvement in assessing Advanced Traveler Information Systems (ATIS) within the service context of Advanced Public Transportation System (APTS). This paper describes the evaluation survey that was conducted for the study and qualitative, quantitative and subjective analyses of the responses. It was observed that there were some critical functions of the website responsible for quality of use satisfaction. Further, complexity of task influenced expectations from the trip planning systems. Future research steps might involve inquiring a larger base of user focus groups and understanding needs of administrators and planners involved in on-line ATIS/APTS activities.
... "Spatial Information System Development: The Role of Information Systems Design ... more ... "Spatial Information System Development: The Role of Information Systems Design Theory and Ontologies." In Emerging Spatial Information Systems and Applications, ed. Brian Hilton, 36-62 (2007), accessed March 13, 2011. doi:10.4018/978-1-59904-075-2.ch002. ...
As a result of growing interest in telemedicine during the last decade, we have seen the developm... more As a result of growing interest in telemedicine during the last decade, we have seen the development and deployment of several video conferencing telemedicine applications during recent years. Deployment of these applications was on ISDN lines or dedicated circuits since the bandwidth, security, and privacy have been the biggest concern in telemedicine. Session Initiation Protocol (SIP) is a signaling standard that attracts telemedicine application developers since SIP was designed for multimedia communications over IP-based networks and has inherent native mode security mechanisms built in. We have developed a SIP-based video conferencing application that runs over the Internet and can provide authentication using MD5 Digest hashing mechanism. This client is designed to provide voice and video services using SIP, currently being standardized by IETF. The client is also integrated with directory service designed on commObject architecture. The video conferencing client performance and interoperability has been successfully tested. We are now working on deploying it in a telemedicine environment. In a telemedicine setting we will gather data from users in order to evaluate user satisfaction for both physicians and patients. There are additional features we have identified that can enhance the patient physician communication and they will be obtained easily from our client in the future.
Media communication using SIP is providing us with capabilities to architect applications over ub... more Media communication using SIP is providing us with capabilities to architect applications over ubiquitous platforms including the Internet. Although there are certain attempts to make media-enabled applications, there exists a need to deploy security and directory features that constitute middleware services. The software application, described in the paper, is part of a research initiative in Internet2 community to deploy middleware services on video conferencing application. The paper describes the architecture of a Java-based SIP Client and the results of interoperability tests between four SIP user agents. Efforts are being made to enable the application with secured middleware features.
Changing demographic patterns warrant suitable Intelligent Transportation Systems (ITS) for enabl... more Changing demographic patterns warrant suitable Intelligent Transportation Systems (ITS) for enabling diverse trips. The general area of e-government has focused on efficient ways to deliver electronic information and services. This study considers a method for end-user involvement in assessing Advanced Traveler Information Systems (ATIS) within the service context of Advanced Public Transportation System (APTS). This paper describes the evaluation survey that was conducted for the study and qualitative, quantitative and subjective analyses of the responses. It was observed that there were some critical functions of the website responsible for quality of use satisfaction. Further, complexity of task influenced expectations from the trip planning systems. Future research steps might involve inquiring a larger base of user focus groups and understanding needs of administrators and planners involved in on-line ATIS/APTS activities.
... "Spatial Information System Development: The Role of Information Systems Design ... more ... "Spatial Information System Development: The Role of Information Systems Design Theory and Ontologies." In Emerging Spatial Information Systems and Applications, ed. Brian Hilton, 36-62 (2007), accessed March 13, 2011. doi:10.4018/978-1-59904-075-2.ch002. ...
As a result of growing interest in telemedicine during the last decade, we have seen the developm... more As a result of growing interest in telemedicine during the last decade, we have seen the development and deployment of several video conferencing telemedicine applications during recent years. Deployment of these applications was on ISDN lines or dedicated circuits since the bandwidth, security, and privacy have been the biggest concern in telemedicine. Session Initiation Protocol (SIP) is a signaling standard that attracts telemedicine application developers since SIP was designed for multimedia communications over IP-based networks and has inherent native mode security mechanisms built in. We have developed a SIP-based video conferencing application that runs over the Internet and can provide authentication using MD5 Digest hashing mechanism. This client is designed to provide voice and video services using SIP, currently being standardized by IETF. The client is also integrated with directory service designed on commObject architecture. The video conferencing client performance and interoperability has been successfully tested. We are now working on deploying it in a telemedicine environment. In a telemedicine setting we will gather data from users in order to evaluate user satisfaction for both physicians and patients. There are additional features we have identified that can enhance the patient physician communication and they will be obtained easily from our client in the future.
Media communication using SIP is providing us with capabilities to architect applications over ub... more Media communication using SIP is providing us with capabilities to architect applications over ubiquitous platforms including the Internet. Although there are certain attempts to make media-enabled applications, there exists a need to deploy security and directory features that constitute middleware services. The software application, described in the paper, is part of a research initiative in Internet2 community to deploy middleware services on video conferencing application. The paper describes the architecture of a Java-based SIP Client and the results of interoperability tests between four SIP user agents. Efforts are being made to enable the application with secured middleware features.
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Papers by Tarun Abhichandani