Due to the diversified demands of quality of service（QoS） in volume multimedia application, QoS routings for multiservice are becoming a research hotspot in low earth orbit（LEO） satellite networks. A novel QoS sat...Due to the diversified demands of quality of service（QoS） in volume multimedia application, QoS routings for multiservice are becoming a research hotspot in low earth orbit（LEO） satellite networks. A novel QoS satellite routing algorithm for multi-class traffic is proposed. The goal of the routing algorithm is to provide the distinct QoS for different traffic classes and improve the utilization of network resources. Traffic is classified into three classes and allocated priorities based on their QoS requirements, respectively. A priority queuing mechanism guarantees the algorithm to work better for high-priority classes. In order to control the congestion, a blocking probability analysis model is built up based on the Markov process theory. Finally, according to the classification link-cost metrics, routings for different classes are calculated with the distinct QoS requirments and the status of network resource. Simulations verify the performance of the routing algorithm at different time and in different regions, and results demonstrate that the algorithm has great advantages in terms of the average delay and the blocking probability. Meanwhile, the robustness issue is also discussed.展开更多
In a constantly changing environment, accountants must not only acquire technical accounting knowledge and skills, but also acquire integrity, objectivity and the skills that enable them to take a firm stand in diffic...In a constantly changing environment, accountants must not only acquire technical accounting knowledge and skills, but also acquire integrity, objectivity and the skills that enable them to take a firm stand in difficult situations. The purpose of this study is to know how to effectively incorporate business ethics in the Bachelor of Science in Accountancy （BSA） curriculum at De La Salle University （DLSU）, Manila. Discussions in this paper focused on the responses of the students on what teaching strategies may prove to be effective when teaching business ethics subjects. Results of this study revealed that students ranked as the most effective the teaching strategy sub-group learning through ethical discussion and collaborative learning followed by the lecture method. Role playing and/or film viewing was ranked third. Inviting guest speaker for practitioner participation, case study method, personal value journals, and service learning were ranked fourth, fifth, sixth and seventh respectively. It is interesting to note that students ranked last/eighth the teaching strategy using the technology-enhanced learning or E-learning when teaching business ethics. This can give us an idea that even though the current generations of students are adept in using the computer and the Internet, they would still prefer actual classroom experiences in learning ethics courses.展开更多
基金Supported by the National High Technology Research and Development Program of China(″863″Program)(2010AAxxx404)~~
文摘Due to the diversified demands of quality of service（QoS） in volume multimedia application, QoS routings for multiservice are becoming a research hotspot in low earth orbit（LEO） satellite networks. A novel QoS satellite routing algorithm for multi-class traffic is proposed. The goal of the routing algorithm is to provide the distinct QoS for different traffic classes and improve the utilization of network resources. Traffic is classified into three classes and allocated priorities based on their QoS requirements, respectively. A priority queuing mechanism guarantees the algorithm to work better for high-priority classes. In order to control the congestion, a blocking probability analysis model is built up based on the Markov process theory. Finally, according to the classification link-cost metrics, routings for different classes are calculated with the distinct QoS requirments and the status of network resource. Simulations verify the performance of the routing algorithm at different time and in different regions, and results demonstrate that the algorithm has great advantages in terms of the average delay and the blocking probability. Meanwhile, the robustness issue is also discussed.
文摘In a constantly changing environment, accountants must not only acquire technical accounting knowledge and skills, but also acquire integrity, objectivity and the skills that enable them to take a firm stand in difficult situations. The purpose of this study is to know how to effectively incorporate business ethics in the Bachelor of Science in Accountancy （BSA） curriculum at De La Salle University （DLSU）, Manila. Discussions in this paper focused on the responses of the students on what teaching strategies may prove to be effective when teaching business ethics subjects. Results of this study revealed that students ranked as the most effective the teaching strategy sub-group learning through ethical discussion and collaborative learning followed by the lecture method. Role playing and/or film viewing was ranked third. Inviting guest speaker for practitioner participation, case study method, personal value journals, and service learning were ranked fourth, fifth, sixth and seventh respectively. It is interesting to note that students ranked last/eighth the teaching strategy using the technology-enhanced learning or E-learning when teaching business ethics. This can give us an idea that even though the current generations of students are adept in using the computer and the Internet, they would still prefer actual classroom experiences in learning ethics courses.
