As device-to-device(D2D) communications usually reuses the resource of cellular networks, call admission control(CAC) and power control are crucial problems. However in most power control schemes, total data rates or ...As device-to-device(D2D) communications usually reuses the resource of cellular networks, call admission control(CAC) and power control are crucial problems. However in most power control schemes, total data rates or throughput are regarded as optimization criterion. In this paper, a combining call admission control(CAC) and power control scheme under guaranteeing QoS of every user equipment(UE) is proposed. First, a simple CAC scheme is introduced. Then based on the CAC scheme, a combining call admission control and power control scheme is proposed. Next, the performance of the proposed scheme is evaluated. Finally, maximum DUE pair number and average transmitting power is calculated. Simulation results show that D2 D communications with the proposed combining call admission control and power control scheme can effectively improve the maximum DUE pair number under the premise of meeting necessary QoS.展开更多
Despite limited studies have found the negative relationships between calling and mental health symptoms,its underlying mechanism is still unknown.Drawing on the conservation of resources theory(COR),this study develo...Despite limited studies have found the negative relationships between calling and mental health symptoms,its underlying mechanism is still unknown.Drawing on the conservation of resources theory(COR),this study developed the resources model that explains the relationships between career calling,anxiety and depression,and the underlying mechanism.With a sample of 628 employees from the two-wave survey,the theorized model was tested.The results showed that career calling was able to decrease the levels of employees’anxiety and depression,and two important resources(i.e.,personal growth,and meaningful work)provided explanatory mechanisms for the relationships.The findings highlight the importance of spirituality in the workplace.Theoretical and practical implications are discussed.展开更多
XING Weikai, 44, is principal of the Middle School A liated to the Central Conservatory of Music. The school has been Xing＇s alma mater, workplace and home since he enrolled in 1973.
Nathaniel Hawthorne was a well-known and highly honored American novelist of the 19th century, who has had a positive and profound influence on the development of Western Literature, especially on novel writing. His w...Nathaniel Hawthorne was a well-known and highly honored American novelist of the 19th century, who has had a positive and profound influence on the development of Western Literature, especially on novel writing. His works-The Scarlet letter is world-wide recognized as a classic, which makes him an eternal radiant in American literature. This paper aims at introducing and analysing the background against which he was brought up and also the conceptive process of his works especially The Scarlet Letter and others.展开更多
基金supported in part by the Project of National Natural Science Foundation of China (61301110)Project of Shanghai Key Laboratory of Intelligent Information Processing, China [grant number IIPL-2014-005]+1 种基金the Project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutionsthe Project of Jiangsu Overseas Research & Training Program for University Prominent Young & Middle-Aged Teachers and Presidents
文摘As device-to-device(D2D) communications usually reuses the resource of cellular networks, call admission control(CAC) and power control are crucial problems. However in most power control schemes, total data rates or throughput are regarded as optimization criterion. In this paper, a combining call admission control(CAC) and power control scheme under guaranteeing QoS of every user equipment(UE) is proposed. First, a simple CAC scheme is introduced. Then based on the CAC scheme, a combining call admission control and power control scheme is proposed. Next, the performance of the proposed scheme is evaluated. Finally, maximum DUE pair number and average transmitting power is calculated. Simulation results show that D2 D communications with the proposed combining call admission control and power control scheme can effectively improve the maximum DUE pair number under the premise of meeting necessary QoS.
文摘Despite limited studies have found the negative relationships between calling and mental health symptoms,its underlying mechanism is still unknown.Drawing on the conservation of resources theory(COR),this study developed the resources model that explains the relationships between career calling,anxiety and depression,and the underlying mechanism.With a sample of 628 employees from the two-wave survey,the theorized model was tested.The results showed that career calling was able to decrease the levels of employees’anxiety and depression,and two important resources(i.e.,personal growth,and meaningful work)provided explanatory mechanisms for the relationships.The findings highlight the importance of spirituality in the workplace.Theoretical and practical implications are discussed.
文摘XING Weikai, 44, is principal of the Middle School A liated to the Central Conservatory of Music. The school has been Xing＇s alma mater, workplace and home since he enrolled in 1973.
文摘Nathaniel Hawthorne was a well-known and highly honored American novelist of the 19th century, who has had a positive and profound influence on the development of Western Literature, especially on novel writing. His works-The Scarlet letter is world-wide recognized as a classic, which makes him an eternal radiant in American literature. This paper aims at introducing and analysing the background against which he was brought up and also the conceptive process of his works especially The Scarlet Letter and others.
