The generalized Riccati equation vational expansion method is extended in this paper. Several exact solutions for the generalized Burgers-Fisher equation with variable coefficients are obtained by this method, and som...The generalized Riccati equation vational expansion method is extended in this paper. Several exact solutions for the generalized Burgers-Fisher equation with variable coefficients are obtained by this method, and some of which are derived for the first time. It is concluded from the results that this approach is simple and efficient even in solving partial differential equations with variable coefficients.展开更多
In this new century, the new green economy growth development pattern is gradually raised. As the expanding of development background, green management pattern has gradually been listed in many enterprises. This allow...In this new century, the new green economy growth development pattern is gradually raised. As the expanding of development background, green management pattern has gradually been listed in many enterprises. This allows companies to conduct exploration deeply, and takes advantage of sustainable development of the green economy plans; so as to make the call of national energy-saving emission to be responded, environment-friendly and resource-saving society to be constructed, also can make the healthy and green corporate culture to be created.展开更多
Cooperative communication can enhance the performance of wireless networks via relays, and so how to allocate the relay to obtain the optimal performance of system is a key issue. In this article, we consider a cooper...Cooperative communication can enhance the performance of wireless networks via relays, and so how to allocate the relay to obtain the optimal performance of system is a key issue. In this article, we consider a cooperative system where two users communicate with the destination via relays, and these relays connect with the destination by cable. Through the theoretical derivation and analysis, we obtain the optimal relay allocation strat- egy based on the maximum rate under the condition of relays setting forwarding thresholds. The result shows that the system has the maximum transmission rate when the relays are allocated equivalently between users. Moreover, compared with the single-user system, the results prove that diversity gain has a decisive effect on the performance in low SNR. However, with the SNR increasing, the impact of diversity gain on system rate will be reduced. In high SNR, spatial freedom degree of the channel of multiple users is brought to enhance the performance instead of diversity gain. Numerical results demonstrate the validity of the allocation strategy and conclusion arrived in this study, but we do not find the similar arguments in the literature so far, for comparison with the conclusion of this study.展开更多
Negotiation skills are essential for everyone especially business leaders to agree on how to share a limited resource,create mutual benefit and avoid conflicts in crisis.In this recent coronavirus outbreak,the Chinese...Negotiation skills are essential for everyone especially business leaders to agree on how to share a limited resource,create mutual benefit and avoid conflicts in crisis.In this recent coronavirus outbreak,the Chinese government is encouraging people to stay at home as much as possible,prohibiting any gathering activities,and forcing some businesses to close.Therefore,this paper will use data analysis,case study and investigation for a small garment processor enterprise to indicate the problem about capital chain rupture and loss of profit from macro to micro perspectives.From the second half of this paper,there are three suggestions including preparation,adjustment of emotions and some common tactics for SMEs to use in negotiation in crisis.展开更多
This paper considers the incentive and coordination problem of the construction supply chain consisting of the owner,general contractor,subcontractors and suppliers based on the sustainable development goals under unc...This paper considers the incentive and coordination problem of the construction supply chain consisting of the owner,general contractor,subcontractors and suppliers based on the sustainable development goals under uncertain environment.Firstly,according to the general contract management pattern and the relationships among those participants,we establish an uncertain bi-level nonlinear model in which the owner set the proper intensities to minimise the total cost at first while the general contractor decides its alternative and the limits to subcontractors correspondingly.Then,we convert the primal model into a deterministic bi-level nonlinear programming model based on the concept of relative robustness.Next,a solution procedure combing interactive fuzzy technique and genetic algorithm is designed.Finally,the validity of the model is verified by a numerical example.Our paper provides a method to optimise the construction project management from the perspective of supply chain under the requirement of sustainable development.展开更多
基金Supported by the National Basic Research Project of China (973 Program No. 2006CB705500)by the National Natural Science Foundation of China under Grant Nos. 10975216, 10635040by the Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant No. 20093402110032
文摘The generalized Riccati equation vational expansion method is extended in this paper. Several exact solutions for the generalized Burgers-Fisher equation with variable coefficients are obtained by this method, and some of which are derived for the first time. It is concluded from the results that this approach is simple and efficient even in solving partial differential equations with variable coefficients.
文摘In this new century, the new green economy growth development pattern is gradually raised. As the expanding of development background, green management pattern has gradually been listed in many enterprises. This allows companies to conduct exploration deeply, and takes advantage of sustainable development of the green economy plans; so as to make the call of national energy-saving emission to be responded, environment-friendly and resource-saving society to be constructed, also can make the healthy and green corporate culture to be created.
基金supported by the National Natural Science Foundation of China under Grant numbers 61032002,61101090, and 60902026the Chinese Important National Science & Technology Specific Projects under Grant number 2011ZX03001-007-01
文摘Cooperative communication can enhance the performance of wireless networks via relays, and so how to allocate the relay to obtain the optimal performance of system is a key issue. In this article, we consider a cooperative system where two users communicate with the destination via relays, and these relays connect with the destination by cable. Through the theoretical derivation and analysis, we obtain the optimal relay allocation strat- egy based on the maximum rate under the condition of relays setting forwarding thresholds. The result shows that the system has the maximum transmission rate when the relays are allocated equivalently between users. Moreover, compared with the single-user system, the results prove that diversity gain has a decisive effect on the performance in low SNR. However, with the SNR increasing, the impact of diversity gain on system rate will be reduced. In high SNR, spatial freedom degree of the channel of multiple users is brought to enhance the performance instead of diversity gain. Numerical results demonstrate the validity of the allocation strategy and conclusion arrived in this study, but we do not find the similar arguments in the literature so far, for comparison with the conclusion of this study.
文摘Negotiation skills are essential for everyone especially business leaders to agree on how to share a limited resource,create mutual benefit and avoid conflicts in crisis.In this recent coronavirus outbreak,the Chinese government is encouraging people to stay at home as much as possible,prohibiting any gathering activities,and forcing some businesses to close.Therefore,this paper will use data analysis,case study and investigation for a small garment processor enterprise to indicate the problem about capital chain rupture and loss of profit from macro to micro perspectives.From the second half of this paper,there are three suggestions including preparation,adjustment of emotions and some common tactics for SMEs to use in negotiation in crisis.
基金The authors appreciate the support provided for this paper by the National Natural Science Foundation of China(Project Nos.71471123)the Fundamental Research Funds for the Central Universities(Project Nos.skqy201621)supported by Research center for systems science and enterprise development of Sichuan Province(Project Nos.Xq17B02).
文摘This paper considers the incentive and coordination problem of the construction supply chain consisting of the owner,general contractor,subcontractors and suppliers based on the sustainable development goals under uncertain environment.Firstly,according to the general contract management pattern and the relationships among those participants,we establish an uncertain bi-level nonlinear model in which the owner set the proper intensities to minimise the total cost at first while the general contractor decides its alternative and the limits to subcontractors correspondingly.Then,we convert the primal model into a deterministic bi-level nonlinear programming model based on the concept of relative robustness.Next,a solution procedure combing interactive fuzzy technique and genetic algorithm is designed.Finally,the validity of the model is verified by a numerical example.Our paper provides a method to optimise the construction project management from the perspective of supply chain under the requirement of sustainable development.
