Increases in consumer requirements for both product and service efficiency and effectiveness have resulted in business process reengineering （BPR）. The re-engineering of business processes is concerned with fundamen...Increases in consumer requirements for both product and service efficiency and effectiveness have resulted in business process reengineering （BPR）. The re-engineering of business processes is concerned with fundamentally rethinking and redesigning business processes to obtain dramatic and sustaining improvements in quality, cost, service, lead-times, outcomes, flexibility and innovation （Hammer ＆ Champy, 1993）. Nowadays, banking industry has reduced structural barriers to competition in domestic markets by abolishing interest rates ceilings on deposits and lending by financial intermediaries in the world. Iran also has not been expected. According to the government＇s decision, the interest rate is going down to be around 9% （before： 22%, and right now： 15%）, and this decision is very risky for the banks in Iran. On these reasons cited above, the banks should employ some strategies to solve their problems. It is because the customers have a vital and key role in this sector, and the banks are dependent to them, 13PR is one strategy to help them in this competitive situation. BPR implementation can provide them, to survive in this better customer service, as well as improvement and management of customer expectations satisfaction and loyalty （Winer, 2001）. This study is a descriptive-correlation research to explain effect of BPR on strengthening of banking sector, focus on customer satisfaction as potential of I^PR. The focus of attention with such applications is customer satisfaction. In this research, a questionnaire was developed containing 18 items each items employed a 7-piont instrument developed to find existent relationship between BPR implementation and customer satisfaction, relationship between employee＇s productivity and efficiency and satisfaction level of customer and also effect of information technology on accomplishment of BPR. In order to validate the instrument, validity and reliability tests were performed and to get reliability. Alpha kronbakh has computed according a pilot study as shown in following items： r HI （with 5 factors） = 75.7%; r H2 （with 7 factors） = 75%; r H3 （with 5 factors） = 81%; R total： （with 17 factors） = 92%展开更多
The Software Defined Networking(SDN) paradigm separates the control plane from the packet forwarding plane, and provides applications with a centralized view of the distributed network state. Thanks to the flexibility...The Software Defined Networking(SDN) paradigm separates the control plane from the packet forwarding plane, and provides applications with a centralized view of the distributed network state. Thanks to the flexibility and efficiency of the traffic flow management, SDN based traffic engineering increases network utilization and improves Quality of Service(QoS). In this paper, an SDN based traffic scheduling algorithm called CATS is proposed to detect and control congestions in real time. In particular, a new concept of aggregated elephant flow is presented. And then a traffic scheduling optimization model is formulated with the goal of minimizing the variance of link utilization and improving QoS. We develop a chaos genetic algorithm to solve this NP-hard problem. At the end of this paper, we use Mininet, Floodlight and video traces to simulate the SDN enabled video networking. We simulate both the case of live video streaming in the wide area backbone network and the case of video file transferring among data centers. Simulation results show that the proposed algorithm CATS effectively eliminates network congestions in subsecond. In consequence, CATS improves the QoS with lower packet loss rate and balanced link utilization.展开更多
文摘Increases in consumer requirements for both product and service efficiency and effectiveness have resulted in business process reengineering （BPR）. The re-engineering of business processes is concerned with fundamentally rethinking and redesigning business processes to obtain dramatic and sustaining improvements in quality, cost, service, lead-times, outcomes, flexibility and innovation （Hammer ＆ Champy, 1993）. Nowadays, banking industry has reduced structural barriers to competition in domestic markets by abolishing interest rates ceilings on deposits and lending by financial intermediaries in the world. Iran also has not been expected. According to the government＇s decision, the interest rate is going down to be around 9% （before： 22%, and right now： 15%）, and this decision is very risky for the banks in Iran. On these reasons cited above, the banks should employ some strategies to solve their problems. It is because the customers have a vital and key role in this sector, and the banks are dependent to them, 13PR is one strategy to help them in this competitive situation. BPR implementation can provide them, to survive in this better customer service, as well as improvement and management of customer expectations satisfaction and loyalty （Winer, 2001）. This study is a descriptive-correlation research to explain effect of BPR on strengthening of banking sector, focus on customer satisfaction as potential of I^PR. The focus of attention with such applications is customer satisfaction. In this research, a questionnaire was developed containing 18 items each items employed a 7-piont instrument developed to find existent relationship between BPR implementation and customer satisfaction, relationship between employee＇s productivity and efficiency and satisfaction level of customer and also effect of information technology on accomplishment of BPR. In order to validate the instrument, validity and reliability tests were performed and to get reliability. Alpha kronbakh has computed according a pilot study as shown in following items： r HI （with 5 factors） = 75.7%; r H2 （with 7 factors） = 75%; r H3 （with 5 factors） = 81%; R total： （with 17 factors） = 92%
基金partly supported by NSFC under grant No.61371191 and No.61472389
文摘The Software Defined Networking(SDN) paradigm separates the control plane from the packet forwarding plane, and provides applications with a centralized view of the distributed network state. Thanks to the flexibility and efficiency of the traffic flow management, SDN based traffic engineering increases network utilization and improves Quality of Service(QoS). In this paper, an SDN based traffic scheduling algorithm called CATS is proposed to detect and control congestions in real time. In particular, a new concept of aggregated elephant flow is presented. And then a traffic scheduling optimization model is formulated with the goal of minimizing the variance of link utilization and improving QoS. We develop a chaos genetic algorithm to solve this NP-hard problem. At the end of this paper, we use Mininet, Floodlight and video traces to simulate the SDN enabled video networking. We simulate both the case of live video streaming in the wide area backbone network and the case of video file transferring among data centers. Simulation results show that the proposed algorithm CATS effectively eliminates network congestions in subsecond. In consequence, CATS improves the QoS with lower packet loss rate and balanced link utilization.
