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Faculty of Informatics - Papers (Archive)

2005

Systems

Articles 1 - 5 of 5

Full-Text Articles in Physical Sciences and Mathematics

Power System Applications Of Superconducting Magnetic Energy Storage Systems, X D. Xue, Eric Kw Cheng, Danny Sutanto Jan 2005

Power System Applications Of Superconducting Magnetic Energy Storage Systems, X D. Xue, Eric Kw Cheng, Danny Sutanto

Faculty of Informatics - Papers (Archive)

This study overviewed current researches on power system applications of SMES systems. Some key schematic diagrams of applications were given, too. Furthermore, the authors tried to present a few valuable suggestions for future studies of SMES applications to power systems.


Decision Aided Joint Compensation Of Clipping Noise And Nonlinearity For Mimo-Ofdm Systems, Shouyi Yang, Jiangtao Xi, Xiaomin Mu Jan 2005

Decision Aided Joint Compensation Of Clipping Noise And Nonlinearity For Mimo-Ofdm Systems, Shouyi Yang, Jiangtao Xi, Xiaomin Mu

Faculty of Informatics - Papers (Archive)

In this paper, we propose a new iterative approach to compensate the nonlinearity and clipping noise in multi-input multi-output orthogonal frequency division multiplexing (MlMO-OFDM) system with nonlinear channel. The proposed approach consists of two stages. Firstly a decision aided method is proposed to eliminate the nonlinearity introduced by high power transmit amplifier (HPA). Then this improved decision observations are employed to achieve the clipping noise compensation. The effectiveness of the proposed approach has been verified by computer simulations.


A Generalised Minimum Variance Controller For Time-Varying Systems, Zheng Li, Christian Schmid Jan 2005

A Generalised Minimum Variance Controller For Time-Varying Systems, Zheng Li, Christian Schmid

Faculty of Informatics - Papers (Archive)

In this paper, the problem of generalised minimum variance control of linear time-varying systems is studied. A time-varying optimal controller is developed for a standard controlled autoregressive moving average model using a cost function that is the sum of the plant output tracking error variance plus a penalty term of the squared manipulated variable.


Study Of Characteristics Of Effective Online Help Systems To Facilitate Nurses Interacting With Nursing Information Systems, Yiyu Qiu, Ping Yu Jan 2005

Study Of Characteristics Of Effective Online Help Systems To Facilitate Nurses Interacting With Nursing Information Systems, Yiyu Qiu, Ping Yu

Faculty of Informatics - Papers (Archive)

Topic area and paper objectives: Through identifying characteristics of Online Help System (OHS) that could facilitate nurses effectively interacting with information system, this paper proposes a framework that could guide the development of OHS written for a Nursing Information System (NIS). Background and concise literature review: User training is an important mechanism to guarantee the success of information system implementation. This is particularly true for a user group such as nurses. When faced with unfamiliar tasks, a user requires assistance to get the system to work. An OHS is supposed to be helpful in such situation. However, to date it …


Exploring End-User Perceptions Towards Mandated Deployment Of Pda-Based Health Information Systems Within Ambulatory Care, Jason P. Sargent, Lois Burgess, Joan Cooper, Carole Alcock, Damien Ryan Jan 2005

Exploring End-User Perceptions Towards Mandated Deployment Of Pda-Based Health Information Systems Within Ambulatory Care, Jason P. Sargent, Lois Burgess, Joan Cooper, Carole Alcock, Damien Ryan

Faculty of Informatics - Papers (Archive)

The impact of many well intentioned technology integration projects has not always been viewed favourably. In fact, many projects are destined to fail from the outset by not considering fundamental IT system inves tment risks (technical failure, data failure, user failure, organizational failure) [Lyytinen & Hirschiem, 1987]. With any new technology ‘an element of uncertainty exists in the minds of decision makers with respect to the successful adoption of them’ [Bagozzi et al, 1992]. Uncertainty towards adopting new technologies is not solely the domain of decision makers. Apart from chief technology and information officers, system administrators and help desk personnel, …