Power allocation is an important issue for Cognitive Radio Networks(CRNs),since it needs to consider the Quality of Service(QoS) for Secondary Users(SUs) while maintaining the interference power to Primary User(PU) be...Power allocation is an important issue for Cognitive Radio Networks(CRNs),since it needs to consider the Quality of Service(QoS) for Secondary Users(SUs) while maintaining the interference power to Primary User(PU) below the Interference Temperature(IT) threshold. In this paper, based on Euclidean projection, we propose a distributed power control algorithm with QoS requirements to minimise the total power consumption of SUs under the time-varying channel scenario. Considering the maximum transmit power constraints and the minimum signal to interference plus noise constraints for each SU, together with the IT constraints for each PU, the power allocation problem is transformed into a convex optimization problem without auxiliary variables, and is solved by the Lagrangian dual method with less information exchange.Simulation results demonstrate that the proposed scheme is superior to the Iterative Water-Filling Algorithm(IWFA).展开更多
In this paper, an effective formula for the calculation of the elementary functions of a quaternion variable obtained using the methods of differential equations. Also the elementary functions are obtained from the qu...In this paper, an effective formula for the calculation of the elementary functions of a quaternion variable obtained using the methods of differential equations. Also the elementary functions are obtained from the quaternion matrices.展开更多
The Schrodinger equation for a particle in the V-shaped potential decorated by a repulsive or attractive Dirac delta function interaction at the center is solved, demonstrating the crucial influence of point interacti...The Schrodinger equation for a particle in the V-shaped potential decorated by a repulsive or attractive Dirac delta function interaction at the center is solved, demonstrating the crucial influence of point interaction on the even-parity states of the original system without decoration. As strength of the attraction increases, the ground state energy falls down without limit; and in limit of infinitely large attraction, the ground state approaches a singular state. Our analysis and conclusion can be readily generalized to any one-dimensional system a particle interacts with symmetrical potential plus the Dirac delta function interaction at the center.展开更多
This paper detailed describes the design of intelligent Home Furnishing system based on B/S architecture. According to the existing development mode of intelligent Home Furnishing system and the analysis of functional...This paper detailed describes the design of intelligent Home Furnishing system based on B/S architecture. According to the existing development mode of intelligent Home Furnishing system and the analysis of functional requirements, the paper puts forward the general framework of intelligent Home Furnishing system, and designed the communication scheme of the system, and gives the system each function module realization. This paper mainly completes the design of networking, each function module of embedded intelligent family gateway server in the system building and CGI intelligent interactive program and CGI interactive program. Experiments show that each function module of the system meet to design requirements, the overall system can satisfy the actual demand Home Furnishing user, validated the feasibility of the B/S architecture in intelligent Home Furnishing system.展开更多
This paper deeply studies the intelligent Home embedded system based on B/S architecture. Firstly, analysis requirement of Home function based on the existing software development mode, and proposed a system framework...This paper deeply studies the intelligent Home embedded system based on B/S architecture. Firstly, analysis requirement of Home function based on the existing software development mode, and proposed a system framework of intelligent Home system, and designed the communication scheme of the whole Home system, also gives the system each function module realization. This paper achieve two basic service system based on Intelligent Home through a series of analysis and design： outdoor remote intelligent Home monitoring service and the indoor intelligent management service.展开更多
Objective The aim of this study was to develop and validate a rapid psychosocial well-being screening tool for metastatic breast cancer patients(MBC-PsySoc-Well-being).Methods Applying a mixed method approach,the stud...Objective The aim of this study was to develop and validate a rapid psychosocial well-being screening tool for metastatic breast cancer patients(MBC-PsySoc-Well-being).Methods Applying a mixed method approach,the study was conducted in two phases.Phase 1,a focus group method was employed for item development,and three focus group sessions were conducted,with patients,caregivers,and medical professionals,respectively.Phase 2,validity and reliability testing were performed.Five experts reviewed items for content validity.Construct validity,criterion-related validity,internal consistency,and test-retest reliability were conducted among a sample of 53 patients with metastatic breast cancer.Results Six themes were qualitatively analyzed based on focus group participants’responses.Eight items were then developed based on these themes.The index of Item-Objective Congruence scored by the experts ranged from 0.6 to 1.0.An exploratory factor analysis yielded three factors:Being curious and active in information seeking,Enthusiasm to return to a normal life,and Adjusting to positive lifestyle.The total scores of MBC-PsySoc-Well-being and the European Organization for Research and Treatment of Cancer’s Quality of Life Core Questionnaire(EORTC QLQ-C30)were moderately correlated(r=0.404,P=0.003).Cronbach’sαcoefficient of the overall scale was 0.686.Pearson correlation coefficients of items between two tests within 14-day ranged from 0.410 to 0.673.Conclusion This study represents an initiative to develop a rapid psychosocial well-being screening tool for patients with metastatic breast cancer.The results from validity and reliability testing indicate that the scale is moderately suitable for application to patients with metastatic breast cancer.However,a larger scale study should be further administered to confirm the validity and reliability of the measurement.展开更多
基金supported by the National Natural Science Foundation of China under Grant No.61171079
文摘Power allocation is an important issue for Cognitive Radio Networks(CRNs),since it needs to consider the Quality of Service(QoS) for Secondary Users(SUs) while maintaining the interference power to Primary User(PU) below the Interference Temperature(IT) threshold. In this paper, based on Euclidean projection, we propose a distributed power control algorithm with QoS requirements to minimise the total power consumption of SUs under the time-varying channel scenario. Considering the maximum transmit power constraints and the minimum signal to interference plus noise constraints for each SU, together with the IT constraints for each PU, the power allocation problem is transformed into a convex optimization problem without auxiliary variables, and is solved by the Lagrangian dual method with less information exchange.Simulation results demonstrate that the proposed scheme is superior to the Iterative Water-Filling Algorithm(IWFA).
文摘In this paper, an effective formula for the calculation of the elementary functions of a quaternion variable obtained using the methods of differential equations. Also the elementary functions are obtained from the quaternion matrices.
基金Supported by the Natural Science Foundation of China under Grant Nos. 50831003, 50571037, and 10774041
文摘The Schrodinger equation for a particle in the V-shaped potential decorated by a repulsive or attractive Dirac delta function interaction at the center is solved, demonstrating the crucial influence of point interaction on the even-parity states of the original system without decoration. As strength of the attraction increases, the ground state energy falls down without limit; and in limit of infinitely large attraction, the ground state approaches a singular state. Our analysis and conclusion can be readily generalized to any one-dimensional system a particle interacts with symmetrical potential plus the Dirac delta function interaction at the center.
文摘This paper detailed describes the design of intelligent Home Furnishing system based on B/S architecture. According to the existing development mode of intelligent Home Furnishing system and the analysis of functional requirements, the paper puts forward the general framework of intelligent Home Furnishing system, and designed the communication scheme of the system, and gives the system each function module realization. This paper mainly completes the design of networking, each function module of embedded intelligent family gateway server in the system building and CGI intelligent interactive program and CGI interactive program. Experiments show that each function module of the system meet to design requirements, the overall system can satisfy the actual demand Home Furnishing user, validated the feasibility of the B/S architecture in intelligent Home Furnishing system.
文摘This paper deeply studies the intelligent Home embedded system based on B/S architecture. Firstly, analysis requirement of Home function based on the existing software development mode, and proposed a system framework of intelligent Home system, and designed the communication scheme of the whole Home system, also gives the system each function module realization. This paper achieve two basic service system based on Intelligent Home through a series of analysis and design： outdoor remote intelligent Home monitoring service and the indoor intelligent management service.
基金This study was financially supported by the 90th anniversary of Chulalongkorn University Fund(Ratchadaphiseksomphot Endow-ment Fund)partially supported by the Behavioral Research and Informatics in Social Science Research Unit,Chulalongkorn University,Thailand.
文摘Objective The aim of this study was to develop and validate a rapid psychosocial well-being screening tool for metastatic breast cancer patients(MBC-PsySoc-Well-being).Methods Applying a mixed method approach,the study was conducted in two phases.Phase 1,a focus group method was employed for item development,and three focus group sessions were conducted,with patients,caregivers,and medical professionals,respectively.Phase 2,validity and reliability testing were performed.Five experts reviewed items for content validity.Construct validity,criterion-related validity,internal consistency,and test-retest reliability were conducted among a sample of 53 patients with metastatic breast cancer.Results Six themes were qualitatively analyzed based on focus group participants’responses.Eight items were then developed based on these themes.The index of Item-Objective Congruence scored by the experts ranged from 0.6 to 1.0.An exploratory factor analysis yielded three factors:Being curious and active in information seeking,Enthusiasm to return to a normal life,and Adjusting to positive lifestyle.The total scores of MBC-PsySoc-Well-being and the European Organization for Research and Treatment of Cancer’s Quality of Life Core Questionnaire(EORTC QLQ-C30)were moderately correlated(r=0.404,P=0.003).Cronbach’sαcoefficient of the overall scale was 0.686.Pearson correlation coefficients of items between two tests within 14-day ranged from 0.410 to 0.673.Conclusion This study represents an initiative to develop a rapid psychosocial well-being screening tool for patients with metastatic breast cancer.The results from validity and reliability testing indicate that the scale is moderately suitable for application to patients with metastatic breast cancer.However,a larger scale study should be further administered to confirm the validity and reliability of the measurement.
