In the trust management scheme of the distributed cognitive radio networks, the absence of the central control devices cause many problems such as a lack of standardized control for trust computation, and the absence ...In the trust management scheme of the distributed cognitive radio networks, the absence of the central control devices cause many problems such as a lack of standardized control for trust computation, and the absence of the decision makers in trust evaluation and collaborative decision making. A trust management mechanism based on the jury system for distributed cognitive radio networks is proposed in this paper. The "jury user" is designed to collaboratively examine the reputation of the cognitive user in the networks and to perform data fusion and spectrum allocation for distributed cognitive radio networks. Simulation analysis results show that the proposed scheme can ensure accuracy and fairness in trust evaluation and improve effectiveness and flexibility of spectrum allocation.展开更多
Corporate social responsibility （CSR） has received a lot of attention in the last few decades, from the economic responsibility to generate profits, to the discretionary responsibility to meet extra activities that ...Corporate social responsibility （CSR） has received a lot of attention in the last few decades, from the economic responsibility to generate profits, to the discretionary responsibility to meet extra activities that society finds desirable. Companies are under pressure from the stakeholders to engage in the line of social, environmental, and economical responsibilities. Until now, no research has been conducted on CSR performance using a dataset from the telecommunication industry in Sudan. Hence, this paper has investigated the strategic importance of CSR in a Sudan telecommunication company （Sudatel）. In doing so, the paper has sought to understand whether the concept of CSR programs is featured in the company＇s culture and strategic plans or whether the management of the company is highly committed to CSR programs. Telecommunication companies are expanding in economic size. Considered as the largest industry in the world in terms of employment and the fastest growing area in business, there are many social and economic benefits and opportunities that can be created through investment in the telecommunication infrastructure, which has the potential to enhance sustainable development, especially for developing countries. To investigate this problem, a qualitative case study methodology is used to collect and analyze the data. Results indicate that the CSR concept is part of the company＇s strategic plan and given high commitment from the top management.展开更多
In this paper,the cause of bit-error is analyzed when data are decided in the optical receiver.A monolithic D-ff decision circuit is designed.It can work effectively at 622 Mb/s.Moreover,a decision method of parallel ...In this paper,the cause of bit-error is analyzed when data are decided in the optical receiver.A monolithic D-ff decision circuit is designed.It can work effectively at 622 Mb/s.Moreover,a decision method of parallel processing to improve the decision speed is presented,through which the parallel circuit can work up to 1 Gb/s using the same model.With the technique,higher-speed data can be decided by using lower speed device.展开更多
The evolution of interuet within last years and continuous advances in electronic commerce and communication provide exciting opportunities to implement powerful framework of resources, tools and applications that rev...The evolution of interuet within last years and continuous advances in electronic commerce and communication provide exciting opportunities to implement powerful framework of resources, tools and applications that revolutionize way in which healthcare institutions interact with their patients, as well as deliver and manage medical services. Internet-based healthcare is application of information and communication technologies across the whole range of healthcare functions. It covers everything from electronic prescriptions and computerized medical records to the use of new systems and services that cut waiting times and reduces data errors. Development and implementation of web-enabled communication, patient services and other e-health initiatives are increasingly important to maintaining competitive advantage and to compete for market share. More importantly, value added for patients by facilitating access to information and resources is expected to improve quality of services, speed of treatment and potentially to rationalize management of administrative processes. However, introductions of such e-healthcare services into market can be successful on condition that customers will recognize all these advantages and have trust in organizations provide theses e-services. In this paper authors will concentrate on customer trust as key factor determining success of e-healthcare. The purpose of this study will determine character and power of trust placed by customers in e-healthcare, and to identify factors influencing customers trust to e-healthcare. Authors have ventured thesis that customer trust to e-healthcare is high as consequence of even higher customer satisfaction with traditional healthcare services and great customer trust in traditional healthcare institutions.展开更多
基金supported by the National Natural Science Foundation of China under Grant No. 61172068
文摘In the trust management scheme of the distributed cognitive radio networks, the absence of the central control devices cause many problems such as a lack of standardized control for trust computation, and the absence of the decision makers in trust evaluation and collaborative decision making. A trust management mechanism based on the jury system for distributed cognitive radio networks is proposed in this paper. The "jury user" is designed to collaboratively examine the reputation of the cognitive user in the networks and to perform data fusion and spectrum allocation for distributed cognitive radio networks. Simulation analysis results show that the proposed scheme can ensure accuracy and fairness in trust evaluation and improve effectiveness and flexibility of spectrum allocation.
文摘Corporate social responsibility （CSR） has received a lot of attention in the last few decades, from the economic responsibility to generate profits, to the discretionary responsibility to meet extra activities that society finds desirable. Companies are under pressure from the stakeholders to engage in the line of social, environmental, and economical responsibilities. Until now, no research has been conducted on CSR performance using a dataset from the telecommunication industry in Sudan. Hence, this paper has investigated the strategic importance of CSR in a Sudan telecommunication company （Sudatel）. In doing so, the paper has sought to understand whether the concept of CSR programs is featured in the company＇s culture and strategic plans or whether the management of the company is highly committed to CSR programs. Telecommunication companies are expanding in economic size. Considered as the largest industry in the world in terms of employment and the fastest growing area in business, there are many social and economic benefits and opportunities that can be created through investment in the telecommunication infrastructure, which has the potential to enhance sustainable development, especially for developing countries. To investigate this problem, a qualitative case study methodology is used to collect and analyze the data. Results indicate that the CSR concept is part of the company＇s strategic plan and given high commitment from the top management.
文摘In this paper,the cause of bit-error is analyzed when data are decided in the optical receiver.A monolithic D-ff decision circuit is designed.It can work effectively at 622 Mb/s.Moreover,a decision method of parallel processing to improve the decision speed is presented,through which the parallel circuit can work up to 1 Gb/s using the same model.With the technique,higher-speed data can be decided by using lower speed device.
文摘The evolution of interuet within last years and continuous advances in electronic commerce and communication provide exciting opportunities to implement powerful framework of resources, tools and applications that revolutionize way in which healthcare institutions interact with their patients, as well as deliver and manage medical services. Internet-based healthcare is application of information and communication technologies across the whole range of healthcare functions. It covers everything from electronic prescriptions and computerized medical records to the use of new systems and services that cut waiting times and reduces data errors. Development and implementation of web-enabled communication, patient services and other e-health initiatives are increasingly important to maintaining competitive advantage and to compete for market share. More importantly, value added for patients by facilitating access to information and resources is expected to improve quality of services, speed of treatment and potentially to rationalize management of administrative processes. However, introductions of such e-healthcare services into market can be successful on condition that customers will recognize all these advantages and have trust in organizations provide theses e-services. In this paper authors will concentrate on customer trust as key factor determining success of e-healthcare. The purpose of this study will determine character and power of trust placed by customers in e-healthcare, and to identify factors influencing customers trust to e-healthcare. Authors have ventured thesis that customer trust to e-healthcare is high as consequence of even higher customer satisfaction with traditional healthcare services and great customer trust in traditional healthcare institutions.
