HKUST Institutional Repository
(5.016 recursos)
Repository of Hong Kong University of Science and Technology. Managed by the HKUST Library.
Mostrando recursos 1 - 10 de 10
1.
Telecommunications regulation in Hong Kong - Xavier, Patrick; Yan, Xu
Telecommunications regulation in Hong Kong (China) is interesting as a case study of pro-competitive regulation in a geographically small city of some 6.8 million people. It is also of particular interest because The Office of the Telecommunications Authority, the sector regulator, has for four years running (1999-2002) been voted the best Asian regulator by readers of Telecom Asia. What policies were applied to warrant this sustained approval rating? This paper examines these policies and suggests further improvements.
2.
Convergence auditing : the context of improved billing service - with reference to the experience of British Telecom - Yan, Xu; Pitt, Douglas C.
The past decade has witnessed drastic change of British Telecom's (BT) billing system. It has evolved from a system simply issuing a plain paper invoice via its individual branches into a comprehensive system meeting increasingly sophisticated and diversified needs of both residential and business customers. This paper, based on one of the authors' experience in BT Laboratories at Ipswich, will provide an in-depth study to this process. It clearly indicates that the convergence of telecommunications and computing has been a major propellant and acilitator behind the revolutionary advancement of BT's billing service. This conclusion further affirms the critical role played...
3.
Cause-classified control chart and its application - Yan, Xu
Traditional statistical tools are subject to certain constraints when they are applied to quality control in industries where the number of faults per working day is limited. An effective quality monitoring and analyzing tool is therefore needed to meet the specific requirements of these industrial sectors. Proposes a so-called "Cause-classified Control Chart", based on fieldwork in the Nanchang Telecommunications Office of China. Trial results from several posts and telecommunications offices in China in recent years have positively shown that the Cause-Classified Control Chart is an effective tool for quality enhancement in these specific industrial sectors.
4.
Internet diffusion in the USA and China - Clark, Theodore H.; Tan, Xixiang (Alex)
Based on surveys conducted twice a year between 1994 and 2000 by leading academic institutions in China and the USA, this study examines internet diffusion in the two countries by age, gender, occupation and educational attainment. It compares user demographics when the internet began and investigates whether they have changed in similar ways in the two countries. In the early development of the internet a similar user profile is indeed found ('young, male, with higher education background, from computer/education-related fields'), however, user demographics in the USA have since moved considerably closer to those of the general population. In China, on...
5.
Optimizing the service configuration with the least total cost approach - Zhao, Xiande; Lau, Ronald; Lam, Kokin
Presents an approach to optimize the service configurations of a student canteen utilizing computer simulation and a total cost function that incorporates both the cost of services and the cost of waiting. The cost of waiting is measured in terms of the impact of waiting on the customer satisfaction and the resulting changes in future repurchases. By collecting data of waiting time and customer satisfaction from a student canteen, first evaluates the impact of waiting time on customer satisfaction and future purchase frequency. Subsequently develops a simulation model to simulate the service processes and waiting line behavior at the student...
6.
Return of the tigers: Asian-Pacific innovation in mobile communications - Yan, Xu
The recession of the late 1990s has not derailed the growth of mobile communications in the Asia-Pacific region. Thanks to i-mode, mobile internet access is well established in Japan, paving the way for 3G and giving a fillip to the content industry. Hardware manufacturers are also tooling up for 3G, while developing countries in the region are saving billions by leap-frogging fixed lines for mobiles. For next-generation mobile technologies, will the sun rise in the east?
7.
Coordinated quality control in a two-stage system - Yao, David D.; Zheng, Shaohui
We study a quality control problem in a two-stage system. We assume that at each stage units are processed in batches, and the rates are random variables with known distributions. Final products are supplied to customers under warranties or service contracts, with penalty costs associated with defective units. Our focus is on coordinating the inspection procedures at the two stages. Using a stochastic dynamic programming approach, we show that the optimal policy at stage 1 is characterized by a sequence of thresholds, and at stage 2, by a priority structure, as well as a threshold structure. The key to optimality...
8.
Two tales of one service : user acceptance of short message service (SMS) in Hong Kong and China - Yan, Xu; Gong, Min; Thong, James Y. L.
The Short Message Service (SMS) has been available in Hong Kong and China since the late 1990s. However, the user acceptance patterns for this service have been evidently different in these two regions. Based on fieldwork in Hong Kong and China, this study attempts to explain these differences through the information technology acceptance framework, which posits that various external factors impact on a person's perceived usefulness, perceived ease of use, and subjective norms, leading to user acceptance of the SMS. This study contributes to telecommunications research by delineating the various stimuli to consider for successful technology acceptance in a global...
9.
P2P searching trends : 2002-2004 - Kwok, James S. H.
This paper presents the trends of searching queries by users from Peer-to-Peer (P2P) networks over an eighteen-month period from July 2002 to January 2004. Four data sets of search queries collected from Gnutella were studied to describe the searching trends. Major findings include (1) the percentage of duplicate queries ranging from 34% to 68% of total queries; (2) an increase in non-English queries; (3) an approximately half of searching queries specified for video or audio file types; (4) the stop word 'the' accounting for one-third of total stop words; (5) the shift of queries from audio to video; and (6)...
10.
Generating strictly non-self-overlapping structured quadrilateral grids - Lin, Hongwei; Tang, Kai; Joneja, Ajay; Bao, Hujun
In this paper, we present a BPM (Bézier Patch Mapping) algorithm which generates a strictly non-self-overlapping structured quadrilateral grid in a given four-sided planar region. Given four pieces of polynomial curves which enclose a simple region in the plane, the algorithm first constructs a Bézier patch which interpolates the four curves (as its four boundary curves), while the inner control points of its control grid remain unknown. In this paper, we show that, for the bijective condition to be satisfied, it is sufficient that the interior points satisfy a set of quadratic inequality equations. Exploiting this key result, we formulate...
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