For the car sequencing（CS） problem, the draw-backs of the ＂sliding windows＂ technique used in the objective function have not been rectified, and no high quality initial solution has been acquired to accelerate th...For the car sequencing（CS） problem, the draw-backs of the ＂sliding windows＂ technique used in the objective function have not been rectified, and no high quality initial solution has been acquired to accelerate the improvement of the solution quality. Firstly, the objective function is improved to solve the double and bias counting of violations broadly discussed. Then, a new method combining heuristic with constraint propagation is proposed which constructs initial solutions under a parallel framework. Based on constraint propagation, three filtering rules are designed to intersecting with three greedy functions, so the variable domain is narrowed in the process of the construction. The parallel framework is served to show its robustness in terms of the quality of the solution since it greatly increases the performance of obtaining the best solution. In the computational experiments, 109 instances of 3 sets from the CSPLib＇ s benchmarks are used to test the performance of the proposed method. Experiment results show that the proposed method outperforms others in acquiring the best-known results for 85 best-known results of 109 are obtained with only one construction. The proposed research provides an avenue to remedy the deficiencies of ＂sliding windows＂ technique and construct high quality initial solutions.展开更多
Due to the increasing number of large and heavy transportation vehicles, the road and bridge are facing great pressure. In order to better deal with and solve such pressure, the construction quality problem of bored p...Due to the increasing number of large and heavy transportation vehicles, the road and bridge are facing great pressure. In order to better deal with and solve such pressure, the construction quality problem of bored piles should be properly solved, which is beneficial to control the adverse factors in the construction and provide basic guarantee for the quality of roads and bridges. Common quality problems in the construction of bored piles for urban road bridges include: hole collapse, borehole deviation, cage floating, pile breaking, warp shrinkage, etc. Therefore, the quality problems of the cast-in-place pile and the solutions should be discussed in depth, the causes of the problems should be analyzed, and prevention suggestions should be provided.展开更多
The installation of mechanical and electrical equipment is a very complex work;the installation process involves more processes and types of work. Therefore, we must pay full attention to the installation of mechanica...The installation of mechanical and electrical equipment is a very complex work;the installation process involves more processes and types of work. Therefore, we must pay full attention to the installation of mechanical and electrical equipment in the usual work process, and pay attention to fully accumulate all kinds of experience in the process of practice, so as to better create a new process and technology. In addition, professionals need to effectively analyze the main causes of various problems, and adopt relevant measures to directly solve the problems, so as to better ensure the quality of the installation equipment.展开更多
Sponge city refers to a new urban construction concept used to solve urban flood disasters and water ecological problems.It is important for the construction of ecological civilization.It plays an important role in th...Sponge city refers to a new urban construction concept used to solve urban flood disasters and water ecological problems.It is important for the construction of ecological civilization.It plays an important role in the green development and livability of the city.In the construction of a sponge city,it is necessary to make special urban planning and improve the top-level design.In recent years,China has developed a number of sponge city pilot projects.The numerous experiments act as important references for the urban construction in China.This paper mainly analyzes the requirements for the construction of sponge city and discusses several problems as well as solutions in the construction.展开更多
For colleges and universities, it is of great significance to strengthen the construction of college students' party branches. It can not only cultivate excellent talents in colleges and universities, but also pro...For colleges and universities, it is of great significance to strengthen the construction of college students' party branches. It can not only cultivate excellent talents in colleges and universities, but also promote the smooth development of party construction in colleges and universities and the continuous development of higher education. Therefore, in the process of education and teaching in colleges and universities, we should attach importance to the construction of party branches, effectively play the role of party organizations in the process of education and management in colleges and universities, and implement the work model of party construction in colleges and universities. This paper probes into the problems existing in the construction of college students' party branches and the optimization measures.展开更多
Accelerating the market-oriented reform of Chinas state-owned construction institutions is of great significance to the long-term and stable development of Chinas state-owned construction institutions and lays a good ...Accelerating the market-oriented reform of Chinas state-owned construction institutions is of great significance to the long-term and stable development of Chinas state-owned construction institutions and lays a good foundation for the long-term development of Chinas state-owned construction undertakings. Electromechanical engineering is an important part of building engineering, and its efficient implementation is an important guarantee to ensure the service function of building. Relatively speaking, due to the complicated work flow of mechanical and electrical engineering, it will be influenced by many objective factors, which objectively increases the construction difficulty of the whole project. Based on this, this paper will mainly analyze the management problems existing in the construction process of mechanical and electrical engineering, and put forward relevant optimization measures.展开更多
基金Supported by National Natural Science Foundation of China(Grant Nos.51435009,71302085)Zhejiang Provincial Natural Science Foundation of China(Grant No.LQ14E080002)K.C.Wong Magna Fund in Ningbo University
文摘For the car sequencing（CS） problem, the draw-backs of the ＂sliding windows＂ technique used in the objective function have not been rectified, and no high quality initial solution has been acquired to accelerate the improvement of the solution quality. Firstly, the objective function is improved to solve the double and bias counting of violations broadly discussed. Then, a new method combining heuristic with constraint propagation is proposed which constructs initial solutions under a parallel framework. Based on constraint propagation, three filtering rules are designed to intersecting with three greedy functions, so the variable domain is narrowed in the process of the construction. The parallel framework is served to show its robustness in terms of the quality of the solution since it greatly increases the performance of obtaining the best solution. In the computational experiments, 109 instances of 3 sets from the CSPLib＇ s benchmarks are used to test the performance of the proposed method. Experiment results show that the proposed method outperforms others in acquiring the best-known results for 85 best-known results of 109 are obtained with only one construction. The proposed research provides an avenue to remedy the deficiencies of ＂sliding windows＂ technique and construct high quality initial solutions.
文摘Due to the increasing number of large and heavy transportation vehicles, the road and bridge are facing great pressure. In order to better deal with and solve such pressure, the construction quality problem of bored piles should be properly solved, which is beneficial to control the adverse factors in the construction and provide basic guarantee for the quality of roads and bridges. Common quality problems in the construction of bored piles for urban road bridges include: hole collapse, borehole deviation, cage floating, pile breaking, warp shrinkage, etc. Therefore, the quality problems of the cast-in-place pile and the solutions should be discussed in depth, the causes of the problems should be analyzed, and prevention suggestions should be provided.
文摘The installation of mechanical and electrical equipment is a very complex work;the installation process involves more processes and types of work. Therefore, we must pay full attention to the installation of mechanical and electrical equipment in the usual work process, and pay attention to fully accumulate all kinds of experience in the process of practice, so as to better create a new process and technology. In addition, professionals need to effectively analyze the main causes of various problems, and adopt relevant measures to directly solve the problems, so as to better ensure the quality of the installation equipment.
文摘Sponge city refers to a new urban construction concept used to solve urban flood disasters and water ecological problems.It is important for the construction of ecological civilization.It plays an important role in the green development and livability of the city.In the construction of a sponge city,it is necessary to make special urban planning and improve the top-level design.In recent years,China has developed a number of sponge city pilot projects.The numerous experiments act as important references for the urban construction in China.This paper mainly analyzes the requirements for the construction of sponge city and discusses several problems as well as solutions in the construction.
文摘For colleges and universities, it is of great significance to strengthen the construction of college students' party branches. It can not only cultivate excellent talents in colleges and universities, but also promote the smooth development of party construction in colleges and universities and the continuous development of higher education. Therefore, in the process of education and teaching in colleges and universities, we should attach importance to the construction of party branches, effectively play the role of party organizations in the process of education and management in colleges and universities, and implement the work model of party construction in colleges and universities. This paper probes into the problems existing in the construction of college students' party branches and the optimization measures.
文摘Accelerating the market-oriented reform of Chinas state-owned construction institutions is of great significance to the long-term and stable development of Chinas state-owned construction institutions and lays a good foundation for the long-term development of Chinas state-owned construction undertakings. Electromechanical engineering is an important part of building engineering, and its efficient implementation is an important guarantee to ensure the service function of building. Relatively speaking, due to the complicated work flow of mechanical and electrical engineering, it will be influenced by many objective factors, which objectively increases the construction difficulty of the whole project. Based on this, this paper will mainly analyze the management problems existing in the construction process of mechanical and electrical engineering, and put forward relevant optimization measures.
