Enhancing network transmission capacity by efficiently allocating node capability

A network s transmission capacity is the maximal rate of traffic inflow that the network can handle without causing congestion Here we study how to enhance this quantity by allocating resource to individual nodes while preserving the total amount of the resource available We propose a practical and effective scheme which redistributes node capability based on the local knowledge of node connectivity We show that our scheme enhances the transmission capacity of networks with heterogeneous structures by up to two orders of magnitude

A Game-theoretic Approach to Choice of Profit and Revenue Maximization Strategies in Tourism Supply Chains for Package Holidays

2007-2008 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

Strategy choice in tourism supply chains for package holidays: a game-theoretic approach

Enterprises in a tourism supply chain usually adopt and operate two business strategies: maximizing their profits or their revenues. This paper investigates the conditions on which these strategies allow enterprises to achieve the maximum benefits in the context of entire supply chain. Several managerial implications have been derived from this theoretical research. Firstly, theme park operator, tour operators and hotel & accommodation providers obtain larger market shares and profits if they select the revenue maximization (R) strategy. Secondly, the profit maximization (P) strategy is a better strategy for both sectors when all the tour operators and all hotel & accommodation providers choose the same strategy. Finally, if both sectors could freely choose their strategies, there is market equilibrium where P-strategy and R-strategy could coexist.published_or_final_versio

Game-Theoretic Approach to Competition Dynamics in Tourism Supply Chains

2008-2009 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

Cloud service-oriented dashboard for work cell management in RFID-enabled ubiquitous manufacturing

This article aims at developing a service-oriented dashboard for operators and supervisors of manufacturing shopfloor work-cells to realize information visibility and traceability effectively with cloud and RFID (radio frequency identification) technologies. The work is based on a case of an illustrative assembly line consisting of a number of work cells. The dashboard is deployed for facilitating assembly operations in ubiquitous manufacturing environment. The utilization of the system leads to significant improvements in work cell productivity and quality, operational flexibility and decision efficiency. © 2013 IEEE.published_or_final_versio

Study on fruit quality measurement and evaluation based on color identification

A non-destructive measuring and evaluating method for fruits is proposed based on color identification. The color images of fruits are taken firstly. Then, images' RGB histograms are calculated and used as quality parameters for fruits. A BP neural network with three layers is established. Its input and output are the RGB histograms and evaluating results, respectively. After training, the qualities of fruits are identified by the BP network according to the histogram of RGB of fruits' images. For verifying the proposed method, the qualities of bananas are measured and evaluated. Experiment results show the reliability and feasibility of proposed method. © 2009 SPIE.published_or_final_versio

A review on political factors influencing public support for urban environmental policy

Environmental quality is important to urban residents’ physical, social and psychological well-being. Governments have been formulating and implementing policies to mitigate environmental deterioration in cities. To effectively implement policies and achieve policy goals, gaining sufficient public support is an essential prerequisite; the policies would be in ruins and the government may also suffer from setbacks in other policy areas in the absence of public support. Therefore, to understand what contributes to public support is a crucial task for policymakers. Though current literature on socio-demographic and attitudinal/psychological factors provides fruitful accounts for policy support, a comprehensive examination of political determinants has yet to be established. In response to this, this review paper explores political factors that influence level of policy support based on existing literature. An integrated framework is proposed to explain policy support for urban environmental policy. This paper also discusses the possible directions of future research

Understanding public support for recycling policy: to unveil the political side of influence and implications

Policy support from the public is gaining importance for successful implementation of environmental policy. Yet the underlying factors of policy support for environmental policy have not been comprehensively examined. While considerable number of studies offered explanation of the phenomenon from the perspective of environmental psychology and social psychology, the growing attention to political factors has not been adequately addressed. In light of this, the present study systematically identified political factors and integrated them with psychological attributes to build a conceptual model for investigating level of policy support for recycling policy. A random household telephone survey was conducted in Hong Kong. 504 valid responses were collected for model testing. The results suggested that although psychological attributes, attitude and perceived benefits, are significant in predicting recycling policy support, political factors are stronger predictors, which perceived policy effectiveness, policy fairness, policy preference, and participatory process demonstrated a significant effect on the level of policy support. In addition, the explanatory power of the conceptual model remarkably increased after political factors were added to the model. The model enables us to compare effects of different sources on the level of policy support, in turn, advances our understanding of the phenomenon. In addition to shaping positive attitude towards recycling and enhancing perceived benefits of recycling practices among the public, policy-makers should put more efforts in formulating a fair, responsive recycling policy that demonstrates capability of policy goal attainment. Public involvement during policy formulation stage is also highly encouraged for mobilizing greater public support

The moderating effect of subjective norm in predicting intention to use urban green spaces: a study of Hong Kong

People living in urban areas are encouraged to use urban green spaces (UGS) because of the physical, psychological and social benefits offered by the green environment to city dwellers. Prior studies have investigated the physical, socio-psychological and demographic factors in explaining the use of UGS; however, the moderating effect of social influence has rarely been examined. Based on the theory of planned behaviour, a model extending the predictors of behavioural intention was proposed in this study. Data were collected by a telephone survey conducted in Hong Kong. The results revealed that attitude, subjective norm, perceived behavioural control, and usefulness positively influence people’s intention of using urban green areas. It was also proved that the interaction terms of usefulness and subjective norm, and perceived quality and subjective norm, negatively influence behavioural intention. Insightful implications for studying UGS behaviour, suggestions for urban planning and promotion of using urban green spaces are discussed

The TOC-Based Algorithm for Solving Multiple Constraint Resources: a Re-examination

published_or_final_versio