126 research outputs found
ACUTA Journal of Telecommunications in Higher Education
In This Issue
Discovering Hidden Revenue Sources in Ancillary Telecom Services
How Videoconferencing Helps Universities Serve New Markets
Show Me the Money- Entrepreneurs on Campus
IT and Return on Investment
Implementing IP Telephony
Rate Development/Cost Modeling at UT
Speech-Dialing the Right Campus Connection
lnstitutional Excellence Award: College of St. Elizabeth
President\u27s Message
From the Executive Director
Jake B. Schrum, PhD
Internetworking Multimedi
ACUTA Journal of Telecommunications in Higher Education
In This Issue
Technology Advances: The View from 10,000 Feet
WAP: Are You Ready for a Wireless World?
Virtual Private Networks: How They Can Work for Colleges and Universities
Network Security: How\u27s Your Posture?
Software for Rent: Contact ASP
Voicing My IPinion
Institutional Excellence Award: Colorado Christian University
Columns
Interview
Book Revie
The diffusion of IP telephony and vendors' commercialisation strategies
This is a post-peer-review, pre-copyedit version of an article published in the Journal of Information Technology. The definitive publisher-authenticated version is available at the link below.The Internet telephony (IP telephony) has been presented as a technology that can replace existing fixed-line services and disrupt the telecommunications industry by offering new low-priced services. This study investigates the diffusion of IP telephony in Denmark by focusing on vendors’ commercialisation strategies. The theory of disruptive innovation is introduced to investigate vendors’ perceptions about IP telephony and explore their strategies that affect the diffusion process in the residential market. The analysis is based on interview data collected from the key market players. The study's findings suggest that IP telephony is treated as a sustaining innovation that goes beyond the typical voice transmission and enables provision of advanced services such as video telephony
ACUTA Journal of Telecommunications in Higher Education
In This Issue
Roundtable Discussion: Convergence: Dealing with Change
Convergence: A Framework for Change
Planning for Competition and Convergence
Voice and Telephony over IP: Risk Dimensions and Solutions
Cybervandals: Fending Off Attacks
Why Vendors See Colleges as a Key Market Segment
Campus Profile: Clarion University of Pennsylvania
Called to Serve: The Conscripted Consultant
Column
QoE Driven Multimedia Service Schemes in Wireless Networks Resource Allocation: Evolution from Optimization, Game Theory, to Economics
In order to deal with the Quality of Experience (QoE) improvement issue in the wireless networks services. In this dissertation we first investigated the Device to Device (D2D) relaying approach in the conventional Base Station (BS) to User Equipment (UE) two entities multimedia service system. In this part, the Multiple Input Multiple Output (MIMO) technology will be implemented in the D2D communication. Furthermore, factors such as the multimedia content distribution (i.e., Quad-tree fractal image compression method), the power allocation strategy, and modulation size are jointly considered to improve the QoE performance and energy efficiency. In addition, the emerging Non-Orthogonal Multiple Access (NOMA) transmission method is becoming very popular and being considered as one of the most potential technologies for the next generation of wireless networks. For the purpose of improving the QoE of UE in the wireless multimedia service, the power allocation method and the corresponding limitations are studied in detail in the wireless system where the traditional Orthogonal Multiple Access (OMA) technology and the promising NOMA technology are compared. At last, facing the real business model in the wireless network services, where the Content Provider (CP), Wireless Carrier (WC), and UE are included, we extend on work from the conventional BS-UE two entities research model to the CP-WC-UE three entities model. More specifically, a generalized best response Smart Media Pricing (SMP) method is studied in this dissertation. In our work, the CP and WC are treated as the service provider alliance. The SMP approach and the game theory are utilized to determine the data length of UE and the data price rate determined by the CP-WC union. It is worth pointing out that the concavity of utility function is no longer necessary for seeking the game equilibrium under the proposed best response game solution. Numerical simulation results also validate the system performance improvement of our proposed transmission schemes
A user-centered approach to network quality of service and charging
The number of network users is expected to triple between 1998 and 2002 (Cullinane, 1998). While a
vision of the future Internet offers the potential to break traditional barriers in communications and
commerce, the current level of service does not satisfy the requirements of many users (Network
Reliability Steering Committee, 1998, Cullinane, 1998).
This thesis is concerned with users' perceptions of Quality of Service (QoS), and their attitudes to
charging mechanisms applied to wide-area networks. Whilst the majority of research in this area has been
conducted from a technical point of view, studies addressing issues of QoS and charging from a users'
perspective are limited. The aim of this research was to investigate the latter issue to provide a more
complete and integrated perspective on QoS and charging in the user-network system.
The thesis first addresses previous work that looks at QoS and charging, establishing a justification for the
new research. This part of the thesis concludes that, whilst part of our understanding of QoS requirements
can be explained by technical and economic paradigms, additional research is required to examine the
perceptions and concomitant behaviour of users. The methodology employed is outlined in relation to
obtaining this objective.
The second part of the thesis details work undertaken. This work has made the following main
contributions:
*Developed a set of conceptual models that describe users' perceptions of network QoS.
*Shown that these models can be used to predict users' behaviour in different contexts by
capturing subjective evaluations of QoS.
* Shown how a combination of established and new methods can be successfully applied in
capturing and assessing users' perceptions of QoS.
*Shown how the new data relates to technical and econometric research.
*Provided concrete examples of how the new research can inform network systems design.
The work documented in this thesis has implications for user-centred, technical and econometric research.
This thesis therefore contributes, not only to the field of HCI to which it is most closely related, but
provides guidelines that can be used by econometricians and network designers. The research from all
three of these perspectives is concerned with the efficient function of network resource allocation systems.
The work documented in this thesis has suggested how it is possible to integrate these perspectives to
provide valued levels of QoS to users
ACUTA Journal of Telecommunications in Higher Education
In This Issue
Roundtable Discussion: Convergence: Dealing with Change
Convergence: A Framework for Change
Planning for Competition and Convergence
Voice and Telephony over IP: Risk Dimensions and Solutions
Cybervandals: Fending Off Attacks
Why Vendors See Colleges as a Key Market Segment
Campus Profile: Clarion University of Pennsylvania
Called to Serve: The Conscripted Consultant
Column
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