The regression of instruction to life raises as a developmental tendency of course reform among the world. Emphasis on the connection between instruction and students' lives has become an important aspect of curri...The regression of instruction to life raises as a developmental tendency of course reform among the world. Emphasis on the connection between instruction and students' lives has become an important aspect of curriculum reform. The student learner's role and the development of students' potentials in their lives also have been emphasized; all these conceptions provide broad space for the implementation of life-orientation of instruction. Situational teaching emphasizes that students should be regarded as the nucleus of the class. Through acquiring knowledge by themselves, they can bear the knowledge in their mind and improve their communicating ability. The teaching activity should always obey the rule of students centered and teacher aided and make sure that the teaching atmosphere can be kept in an authentic situation. And the most important thing that will be talked about is how to apply situational teaching in Junior Middle English Class.展开更多
Life Cycle Costing (LCC) is always a major concern in the Architecture, Engineering and Construction (AEC) industry. This paper presents the implementation of Building Information Modeling (BIM) technology in the deve...Life Cycle Costing (LCC) is always a major concern in the Architecture, Engineering and Construction (AEC) industry. This paper presents the implementation of Building Information Modeling (BIM) technology in the development of a lifecycle cost-estimating tool. The IFC (Industry Foundation Classes) model as an interoperable building information model has been adopted as the central data repository to deliver the integrated information of building designs from CAD design systems into the lifecycle-costing database. In this paper, the conceptions and relevant factors, which could affect the LCC estimation, have been introduced. The problems of current LCC applications have been identified as the lack of LCC data and the complexity of LCC exercises. The software application of IFC models and relevant auxiliary are depicted as a solution of the problem identified. The lifecycle costing tool is a part of the nD Modeling tool and as such is based on its integrated interface prototype toolkit and is able to holistically present an IFC model into a 3D virtual reality view, a tree-view and a list of element properties. The functions and some technical points are also detailed in the paper. Through the research, it demonstrates the potential and possibility of implementing BIM methods and techniques, particularly IFCs to enhance the computer applications in the processes of building construction and facility management.展开更多
针对某综合传动装置研制周期长、结构复杂、零部件繁多等特点,将综合传动装置可靠性预计分为概念设计、方案设计和工程设计3个阶段,并结合层次分析法对综合传动装置按照“系统-分系统-部件-元件”进行结构分层,实现综合传动装置可靠性...针对某综合传动装置研制周期长、结构复杂、零部件繁多等特点,将综合传动装置可靠性预计分为概念设计、方案设计和工程设计3个阶段,并结合层次分析法对综合传动装置按照“系统-分系统-部件-元件”进行结构分层,实现综合传动装置可靠性建模。同时,考虑到部分元件平均故障前时间(mean time to failure, MTTF)远大于服役年限,提出了有限寿命元件可靠性预计策略,给出了机械、电气和液压3类元件针对性的预计方法。最后,案例分析结果验证了方法的有效性。展开更多
White Collar:The American Middle Classes is a famous book written by Mills,C.Wright.In this book,Mills gave a description of the emergence of a"new class",the white-collar workers,during that age in US.He al...White Collar:The American Middle Classes is a famous book written by Mills,C.Wright.In this book,Mills gave a description of the emergence of a"new class",the white-collar workers,during that age in US.He also mentioned about their life styles and their political consciousness.This thesis is to compare the different definitions of middle class in China and in US,and comment on the life styles and the political consciousness of the white collars in China.展开更多
In this paper a time dependent inventory model is developed on the basis of constant production rate and market demands which are exponentially decreasing. It advances in quest of total average optimum cost considerin...In this paper a time dependent inventory model is developed on the basis of constant production rate and market demands which are exponentially decreasing. It advances in quest of total average optimum cost considering those products which have finite shelf-life. The model also considers the small amount of decay. Without having any sort of backlogs, production starts. Reaching at the desired level of inventories, it stops production. After that due to demands along with the deterioration of the items it initiates its depletion and after certain periods the inventory gets zero. The decay of the products is level dependent. The objective of this paper is to find out the optimum inventory cost and optimum time cycle. The model has also been justified with proving the convex property and by giving a numerical example.展开更多
文摘The regression of instruction to life raises as a developmental tendency of course reform among the world. Emphasis on the connection between instruction and students' lives has become an important aspect of curriculum reform. The student learner's role and the development of students' potentials in their lives also have been emphasized; all these conceptions provide broad space for the implementation of life-orientation of instruction. Situational teaching emphasizes that students should be regarded as the nucleus of the class. Through acquiring knowledge by themselves, they can bear the knowledge in their mind and improve their communicating ability. The teaching activity should always obey the rule of students centered and teacher aided and make sure that the teaching atmosphere can be kept in an authentic situation. And the most important thing that will be talked about is how to apply situational teaching in Junior Middle English Class.
文摘Life Cycle Costing (LCC) is always a major concern in the Architecture, Engineering and Construction (AEC) industry. This paper presents the implementation of Building Information Modeling (BIM) technology in the development of a lifecycle cost-estimating tool. The IFC (Industry Foundation Classes) model as an interoperable building information model has been adopted as the central data repository to deliver the integrated information of building designs from CAD design systems into the lifecycle-costing database. In this paper, the conceptions and relevant factors, which could affect the LCC estimation, have been introduced. The problems of current LCC applications have been identified as the lack of LCC data and the complexity of LCC exercises. The software application of IFC models and relevant auxiliary are depicted as a solution of the problem identified. The lifecycle costing tool is a part of the nD Modeling tool and as such is based on its integrated interface prototype toolkit and is able to holistically present an IFC model into a 3D virtual reality view, a tree-view and a list of element properties. The functions and some technical points are also detailed in the paper. Through the research, it demonstrates the potential and possibility of implementing BIM methods and techniques, particularly IFCs to enhance the computer applications in the processes of building construction and facility management.
文摘针对某综合传动装置研制周期长、结构复杂、零部件繁多等特点,将综合传动装置可靠性预计分为概念设计、方案设计和工程设计3个阶段,并结合层次分析法对综合传动装置按照“系统-分系统-部件-元件”进行结构分层,实现综合传动装置可靠性建模。同时,考虑到部分元件平均故障前时间(mean time to failure, MTTF)远大于服役年限,提出了有限寿命元件可靠性预计策略,给出了机械、电气和液压3类元件针对性的预计方法。最后,案例分析结果验证了方法的有效性。
文摘White Collar:The American Middle Classes is a famous book written by Mills,C.Wright.In this book,Mills gave a description of the emergence of a"new class",the white-collar workers,during that age in US.He also mentioned about their life styles and their political consciousness.This thesis is to compare the different definitions of middle class in China and in US,and comment on the life styles and the political consciousness of the white collars in China.
文摘In this paper a time dependent inventory model is developed on the basis of constant production rate and market demands which are exponentially decreasing. It advances in quest of total average optimum cost considering those products which have finite shelf-life. The model also considers the small amount of decay. Without having any sort of backlogs, production starts. Reaching at the desired level of inventories, it stops production. After that due to demands along with the deterioration of the items it initiates its depletion and after certain periods the inventory gets zero. The decay of the products is level dependent. The objective of this paper is to find out the optimum inventory cost and optimum time cycle. The model has also been justified with proving the convex property and by giving a numerical example.
