现阶段以锂电汽车为主的电动汽车发展仍存在一定问题,比如,“里程焦虑”等。本文针对“里程焦虑”问题,提出一种结合太阳能与“311电池数控”技术的纯电动车设想,并以Tesla model S长程续航款车为参考模型,结合实际参数并设立更现实的...现阶段以锂电汽车为主的电动汽车发展仍存在一定问题,比如,“里程焦虑”等。本文针对“里程焦虑”问题,提出一种结合太阳能与“311电池数控”技术的纯电动车设想,并以Tesla model S长程续航款车为参考模型,结合实际参数并设立更现实的运行模式来计算其极限续航里程,验证该设想的可行性。展开更多
Rising energy costs and growing environmental awareness motivate a critical revision of the design of distillation units. Systematic design techniques, such as the rectification body, column profile map, and temperatu...Rising energy costs and growing environmental awareness motivate a critical revision of the design of distillation units. Systematic design techniques, such as the rectification body, column profile map, and temperature collocation methods, require exact knowledge of all pinch points in a particular system, because these stationary points delineate the possible composition trajectories realizable in separation columns. This paper demonstrates novel methods for rigorously determining all pinch points for the constant relative volatility, ideal and non-ideal systems. Constant relative volatility and ideal solution systems are transformed into one-dimensional polynomial and nonlinear functions, regardless of the number of the components. A deflation method is proposed to locate all zeros in ideal and non-ideal zeotropic problems. For more challenging non-ideal problems, a novel hybrid sequential niche algorithm is used to solve hard azeotropic problems successfully. Finally, the design implications of these pinch point locations are investigated to show how new separation configurations can be devised. Methodically the paper points out the use of rigorous pinch point computations in conjunction with continuous composition profiles for robust distillation design.展开更多
Typical isolation models are studied and a New Application Security Isolation model called NASI is proposed, which is based on trusted computing technology and least privilege principle. This paper introduces the desi...Typical isolation models are studied and a New Application Security Isolation model called NASI is proposed, which is based on trusted computing technology and least privilege principle. This paper introduces the design ideas of NASI, gives out formal description and safety analysis for the model, and finally describes the implementation of prototype system based on NASI.展开更多
The double-line five-step ship-lock of Three Gorges Project (TGP) is an extra-large navigation structure with the maximum design total head and single-step delivery head in the world and complicated technical problems...The double-line five-step ship-lock of Three Gorges Project (TGP) is an extra-large navigation structure with the maximum design total head and single-step delivery head in the world and complicated technical problems.The shiplock is a challenging and world-class project integrating the advanced techniques and equipment,the up-to-date technologies and materials,as well as the advanced project management.Through 17-year construction and 9-year operation of the ship-lock,various difficulties in design,construction,equipment manufacturing and installation as well as system debugging have been overcome effectively.The project management ideas,management system,management methods,technological innovation and team building are summarized according to the management practice of the second stage main work of Three Gorges ship-lock.展开更多
Bruce Nussbaum, past assistant managing editor of Business Week magazine, talks about a grand and broad definition of design with a capital ＂D＂ and the failure of design education to keep up with the expansion of th...Bruce Nussbaum, past assistant managing editor of Business Week magazine, talks about a grand and broad definition of design with a capital ＂D＂ and the failure of design education to keep up with the expansion of this broader definition. The application of the design mindset over a broader scope of disciplines such as business and technology results in creative people from overlapping disciplines who are flexible, curious, and imaginative; have a tolerance for ambiguity and provide meaningful frameworks for difficult situations. The design process becomes a secondary skill-set that compliments another primary knowledge/skill base. With this model, business disciplines could apply design thinking to the understanding of fundamental economic drivers and technology/engineering/manufacturing disciplines could apply design thinking over deep process expertise in implementation. What about the work of the traditional design disciplines？ Following the model described above for business and technology, design disciplines should apply ＂design thinking＂ on top of some foundational skill set that comes from the area of human values. What is this primary skill-set？ This paper will attempt to explore and create a simple map of the area defined as ＂Human Values＂, to locate current design education within that area, to propose directions for design education to move within that area, and to propose similar educational areas within the fields Business and Technology.展开更多
文摘Rising energy costs and growing environmental awareness motivate a critical revision of the design of distillation units. Systematic design techniques, such as the rectification body, column profile map, and temperature collocation methods, require exact knowledge of all pinch points in a particular system, because these stationary points delineate the possible composition trajectories realizable in separation columns. This paper demonstrates novel methods for rigorously determining all pinch points for the constant relative volatility, ideal and non-ideal systems. Constant relative volatility and ideal solution systems are transformed into one-dimensional polynomial and nonlinear functions, regardless of the number of the components. A deflation method is proposed to locate all zeros in ideal and non-ideal zeotropic problems. For more challenging non-ideal problems, a novel hybrid sequential niche algorithm is used to solve hard azeotropic problems successfully. Finally, the design implications of these pinch point locations are investigated to show how new separation configurations can be devised. Methodically the paper points out the use of rigorous pinch point computations in conjunction with continuous composition profiles for robust distillation design.
文摘Typical isolation models are studied and a New Application Security Isolation model called NASI is proposed, which is based on trusted computing technology and least privilege principle. This paper introduces the design ideas of NASI, gives out formal description and safety analysis for the model, and finally describes the implementation of prototype system based on NASI.
文摘The double-line five-step ship-lock of Three Gorges Project (TGP) is an extra-large navigation structure with the maximum design total head and single-step delivery head in the world and complicated technical problems.The shiplock is a challenging and world-class project integrating the advanced techniques and equipment,the up-to-date technologies and materials,as well as the advanced project management.Through 17-year construction and 9-year operation of the ship-lock,various difficulties in design,construction,equipment manufacturing and installation as well as system debugging have been overcome effectively.The project management ideas,management system,management methods,technological innovation and team building are summarized according to the management practice of the second stage main work of Three Gorges ship-lock.
文摘Bruce Nussbaum, past assistant managing editor of Business Week magazine, talks about a grand and broad definition of design with a capital ＂D＂ and the failure of design education to keep up with the expansion of this broader definition. The application of the design mindset over a broader scope of disciplines such as business and technology results in creative people from overlapping disciplines who are flexible, curious, and imaginative; have a tolerance for ambiguity and provide meaningful frameworks for difficult situations. The design process becomes a secondary skill-set that compliments another primary knowledge/skill base. With this model, business disciplines could apply design thinking to the understanding of fundamental economic drivers and technology/engineering/manufacturing disciplines could apply design thinking over deep process expertise in implementation. What about the work of the traditional design disciplines？ Following the model described above for business and technology, design disciplines should apply ＂design thinking＂ on top of some foundational skill set that comes from the area of human values. What is this primary skill-set？ This paper will attempt to explore and create a simple map of the area defined as ＂Human Values＂, to locate current design education within that area, to propose directions for design education to move within that area, and to propose similar educational areas within the fields Business and Technology.
