In the present paper,a new trimaran Pure Car Carrier(PCC) is proposed and a feasibility study on the ship is carried out.In this study,first,the effective horse power(EHP)/car of the PCC running in still water is pred...In the present paper,a new trimaran Pure Car Carrier(PCC) is proposed and a feasibility study on the ship is carried out.In this study,first,the effective horse power(EHP)/car of the PCC running in still water is predicted.By comparing the predicted EHP/car with that of a conventional mono-hull PCC,it is found that the trimaran PCC is superior to the conventional mono-hull PCC at rather higher speed.As ship speed increases,the reduction of the resistance of the trimaran is bigger.It is also found that at common service speed of PCCs,the EHP/car of a small PCC is lower than that of a conventional PCC.Secondly,the optimal L/B of a main-hull of the trimaran PCC in still water is determined.The optimal L/B of the main-hull varies with ship speed and size because the wave resistance decreases but the frictional resistance increases as L/B of the hull increases.As ship size increases,the optimal L/B of the main-hull of the trimaran PCC decreases.Finally,the increase of the resistance of PCCs running in strong wind is predicted.The results show that drift angle and speed reduction of the trimaran PCC are much smaller than the conventional mono-hull PCC because of large side force created by three demi-hulls.展开更多
In spite the fact that Emily Elizabeth Dickinson lived during the 19th century Amherst among conservative community that gave less chance to female voice to gain a share in social and political life, she paved the way...In spite the fact that Emily Elizabeth Dickinson lived during the 19th century Amherst among conservative community that gave less chance to female voice to gain a share in social and political life, she paved the way for the coming female thinkers to obtain more freedom of thought and expression. In other words, since she was convient that ＂Abdiction of Belief makes the Behaviour Small＂, she undercut social conventions and moved under gradual shift from Orthodox Trinitarianism into new thoughts of liberalism. However, in good deal of her work, she still pertains to religious conservatism in wider sense than Amhest Church had been dectated.展开更多
The calls for the employment demand are making a change to the rigid, backward teaching method. In this paper, the ＂three- dimensional teaching＂ as a very scientific, flexible, and efficient classroom teaching model...The calls for the employment demand are making a change to the rigid, backward teaching method. In this paper, the ＂three- dimensional teaching＂ as a very scientific, flexible, and efficient classroom teaching model currently is mainly discussed. Meanwhile, the dynamic internal composition of the ＂three-dimensional teaching＂ is mainly introduced from its three stages and three principles, and also the three-dimensional teaching reform plan is supported and promoted based on two advantages.展开更多
The first step to defining the rights,responsibilities and interests of stakeholders and constructing a compensation mechanism is to identify the stakeholders and clarify their mutual relationships.Nature reserves are...The first step to defining the rights,responsibilities and interests of stakeholders and constructing a compensation mechanism is to identify the stakeholders and clarify their mutual relationships.Nature reserves are complex ecosystems involving nature,the economy and society.There exists a conflict between the public welfare benefits of ecological conservation and the private gains to be realized from social and economic development.There also exist in a nature reserve complex relationships among stakeholders,involving the utilization of ecological resources,ecological conservation and ecological-economic interests.The introduction of tourism brings substantial changes to the existing stakeholder benefit structure in a nature reserve.The implementation of tourism ecological compensation（tourism payment for ecological service）is a process for redefining the distribution of rights,responsibilities and profits among stakeholders and it is also an essential way to balance the interests of the stakeholders.This paper uses a case study of Sanya Coral Reef National Nature Reserve in China to examine the characteristics of stakeholders and analyze their interests.According to the method for defining basic attributes proposed by Mitchel and other scholars,in cases of tourism ecological compensation,stakeholders can be classified as definitive stakeholders,expectant stakeholders and latent stakeholders.This paper applies these classifications and then analyzes the relationships between the rights and responsibilities of these stakeholders and how these change after the implementation of compensation.Additionally,based on the impact compensation has on different stakeholders,changes in the relationships can be analyzed and the structure of the stakeholders can be modelled.This case study of the Sanya Coral Reef National Nature Reserve illustrates the operationalization of a new mechanism for tourism ecological compensation.The paper illustrates a method for coordinating the relationships among the stakeholders involved with this national-level nature reserve.展开更多
文摘In the present paper,a new trimaran Pure Car Carrier(PCC) is proposed and a feasibility study on the ship is carried out.In this study,first,the effective horse power(EHP)/car of the PCC running in still water is predicted.By comparing the predicted EHP/car with that of a conventional mono-hull PCC,it is found that the trimaran PCC is superior to the conventional mono-hull PCC at rather higher speed.As ship speed increases,the reduction of the resistance of the trimaran is bigger.It is also found that at common service speed of PCCs,the EHP/car of a small PCC is lower than that of a conventional PCC.Secondly,the optimal L/B of a main-hull of the trimaran PCC in still water is determined.The optimal L/B of the main-hull varies with ship speed and size because the wave resistance decreases but the frictional resistance increases as L/B of the hull increases.As ship size increases,the optimal L/B of the main-hull of the trimaran PCC decreases.Finally,the increase of the resistance of PCCs running in strong wind is predicted.The results show that drift angle and speed reduction of the trimaran PCC are much smaller than the conventional mono-hull PCC because of large side force created by three demi-hulls.
文摘In spite the fact that Emily Elizabeth Dickinson lived during the 19th century Amherst among conservative community that gave less chance to female voice to gain a share in social and political life, she paved the way for the coming female thinkers to obtain more freedom of thought and expression. In other words, since she was convient that ＂Abdiction of Belief makes the Behaviour Small＂, she undercut social conventions and moved under gradual shift from Orthodox Trinitarianism into new thoughts of liberalism. However, in good deal of her work, she still pertains to religious conservatism in wider sense than Amhest Church had been dectated.
文摘The calls for the employment demand are making a change to the rigid, backward teaching method. In this paper, the ＂three- dimensional teaching＂ as a very scientific, flexible, and efficient classroom teaching model currently is mainly discussed. Meanwhile, the dynamic internal composition of the ＂three-dimensional teaching＂ is mainly introduced from its three stages and three principles, and also the three-dimensional teaching reform plan is supported and promoted based on two advantages.
基金The National Natural Science Foundation of China(4166111141361107+1 种基金41561111)the Natural Science Foundation of Hainan Province(413125)
文摘The first step to defining the rights,responsibilities and interests of stakeholders and constructing a compensation mechanism is to identify the stakeholders and clarify their mutual relationships.Nature reserves are complex ecosystems involving nature,the economy and society.There exists a conflict between the public welfare benefits of ecological conservation and the private gains to be realized from social and economic development.There also exist in a nature reserve complex relationships among stakeholders,involving the utilization of ecological resources,ecological conservation and ecological-economic interests.The introduction of tourism brings substantial changes to the existing stakeholder benefit structure in a nature reserve.The implementation of tourism ecological compensation（tourism payment for ecological service）is a process for redefining the distribution of rights,responsibilities and profits among stakeholders and it is also an essential way to balance the interests of the stakeholders.This paper uses a case study of Sanya Coral Reef National Nature Reserve in China to examine the characteristics of stakeholders and analyze their interests.According to the method for defining basic attributes proposed by Mitchel and other scholars,in cases of tourism ecological compensation,stakeholders can be classified as definitive stakeholders,expectant stakeholders and latent stakeholders.This paper applies these classifications and then analyzes the relationships between the rights and responsibilities of these stakeholders and how these change after the implementation of compensation.Additionally,based on the impact compensation has on different stakeholders,changes in the relationships can be analyzed and the structure of the stakeholders can be modelled.This case study of the Sanya Coral Reef National Nature Reserve illustrates the operationalization of a new mechanism for tourism ecological compensation.The paper illustrates a method for coordinating the relationships among the stakeholders involved with this national-level nature reserve.
