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Optimal two-impulse space interception with multiple constraints Research Articles
Li Xie, Yi-qun Zhang, Jun-yan Xu,lixie@ncepu.edu.cn,yiqunzhang@hotmail.com,junyan_Xu@sina.cn
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 7, Pages 963-1118 doi: 10.1631/FITEE.1800763
Application of Satellite Gravity Gradiometry Data to the Refinement of the Earth’s Gravity Field
Ning Jinsheng,Luo Zhicai,Chen Yongqi
Strategic Study of CAE 2002, Volume 4, Issue 7, Pages 23-28
In recent times, one of the primary scientific objectives of physical geodesy is to determine the geoid with centimeter level and to develop the ultra high global earth’s gravity field model，and for this purpose satellite gravity gradiometry is one of the most promising techniques. This paper first comments on the main progress of satellite gravity gradiometry, and then discusses some theories and methods for refining the earth´s gravity field using satellite gravity gradiometry data.
Keywords： satellite gravity gradiometry satellite gravity gradiometry boundary value problem earth's gravity field model geoid
Coverage performance of the multilayer UAV-terrestrial HetNet with CoMP transmission scheme Research Article
Weihao WANG, Yifan JIANG, Zesong FEI, Jing GUO,weihaowang@bit.edu.cn,jiangyifan@bit.edu.cn,feizesong@bit.edu.cn,jingguo@bit.edu.cn
Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 1, Pages 61-72 doi: 10.1631/FITEE.2100310
Keywords： Unmanned aerial vehicle Poisson point process Coordinated multipoint (CoMP) Statistics of interference Coverage performance
Study on Intensifying Measures of Constructed Wetlands
Yan Lu,Wang Shihe,Zhong Qiushuang,Huang Juan
Strategic Study of CAE 2007, Volume 9, Issue 10, Pages 88-90
The constructed wetland is an ecological sewage treatment with good purification effects and low construction and operation costs. However, the oxygen condition in constructed wetlands is of particularity and affects purification efficiency of wetlands. For the lack of systematical study on oxygen condition of wetlands, the further development of wetlands is restricted to some extent. In this paper, the intensifying measures of oxygen condition in horizontal flow wetlands were studied, the optimal operation condition of them were determined. Operation in series, aerifying and multi-inflow and circmfluence were studied by experiments. The results show that operation in series improved oxygen condition unconspicuously. Oxygen concentration in aeration wetlands and multi-inflow wetlands were improved. The optimal gas-flow ratio was 4~5. And the assigned ratio of inflow was 1∶2∶1. The results of research demonstrate that circumfluence makes purifying effect of constructed wetlands improved obviously. Removal efficiency of various pollutants increases quickly.
Keywords： constructed wetlands in series aerify multi-inflow circumfluence
Influence Factors for Distribution of Smoke Concentration in Small-scale Experiment
Huang Rui,Yang Lizhong,Feng Wenxing,Fang Tingyong,Fan Weicheng
Strategic Study of CAE 2003, Volume 5, Issue 8, Pages 54-58
Through using Lagrange interpolation to analyze the limited data of smoke components and concentration attained from the small-scale experiments, it shows the distribution of smoke concentration at same time from different positions and the distribution of smoke concentration field according to time. Considering the random factors existing in these combustion experiments, concentration relative value is provided to contrast data among different experiments. The result shows that distribution of smoke concentration along hallway is mainly affected by mass of fuel and height of the door.
Keywords： smoke 2-dimensional interpolation multipoint measurement
Major Considerations in Development of City Gas in China
Li Youjia
Strategic Study of CAE 2002, Volume 4, Issue 11, Pages 26-31
As a result of the advent of natural gas in China, the city gas faces a good situation of great development at the beginning of the 21 st century. Over 400 cities are involved in the overall planning of natural gas supply, but many careful considerations should be made at present. This article makes the analysis and discussion of the major problems existed, in the hope of attracting universal attention to decrease the risks existed in the construction of projects.
Keywords： city gas regularity of development problems existed suggestions
Management problems in development process of remanufacturing industry
Xu Binshi
Strategic Study of CAE 2012, Volume 14, Issue 12, Pages 10-14
Remanufacturing in China is still in its early stage and faces pressures from society, policy, technology and management. Considering the actual states of remanufacturing in China, this paper researched several key management issues which were cared by various aspects from angle of view of remanufacturing players. Based on need analysis on trend of development of remanufacturing in China, six key management problems were mainly researched, and they were: risk management of remanufacturing players, remanufacturing production mana gement, remanufacturing quality management, authentication mode of remanufacturing in China, subsidy policy of remanufacturing industry, and performance assessment of remanufacturing. The characteristics of six issues were analyzed and the corresponding countermeasures were put forward.
Keywords： remanufacturing industry development management problems
Post-quantum blind signcryption scheme from lattice Research Articles
Huifang Yu, Lu Bai,yuhuifang@xupt.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 6, Pages 891-901 doi: 10.1631/FITEE.2000099
Keywords： 格密码系统；盲签密；抗量子计算；带错误学习问题；最短向量问题
Five important issues in the present field of knowledge discovery
Yang Bingru
Strategic Study of CAE 2009, Volume 11, Issue 4, Pages 76-83
In this paper, the author summarized and proposed five important issues in the present field of knowledge discovery and data mining, which comprise two important core issues, two conjectures, challenge issues in mainstream development, important issues of relevant fields in appliance research and technique standard in knowledge discovery (data mining).Some achievements and special analysis was also presented. Those five issues correlate closely, and these researches will push the development of knowledge discovery (data mining) to a higher stage, and bring great influence to the field inside and outside.
Keywords： important core issues in KD conjectures in KD challenge issues in KD protein secondary structure prediction technique standard in KD
Achievements, Problems and Prospects in China´s Water Conservancy Construction
Pan Jiazheng
Strategic Study of CAE 2002, Volume 4, Issue 2, Pages 42-51
In the first part of the paper, main achievements and progress in water conservancy construction of China over the past half century are briefly summarised in respect of flood-control, irrigation, water supply and hydroenergy utilization, which are also reflected in sci-tech, education and management. In the second part, while affirming the achievements, the problems and shortcomings are analyzed. They mainly include： the flood-control standard is still at low level and reliable and complete water-control systems have not been established; water level of floods are increasingly raising causing the increase of flood prevention burden and risks; overexploiting of water resources and serious waste of water; water contamination and water environment deterioration ;the incompleteness, low quality, extensive management and low economic results of water conservancy projects, and so on. The paper holds that these problems should be attributed to the one-sided ideology and improper policies. Finally, in line with the requirement of the development and rejuvenation of China, the paper forecasts the tasks and goals of water conservancy construction in the days to come.
Keywords： China's water conservancy achievements problem and prospects
Solving Knapsack Problem by Hybrid Particle Swarm Optimization Algorithm
Gao Shang,Yang Jingyu
Strategic Study of CAE 2006, Volume 8, Issue 11, Pages 94-98
The classical particle swarm optimization is a powerful method to find the minimum of a numerical function, on a continuous definition domain. The particle swarm optimization algorithm combining with the idea of the genetic algorithm is recommended to solve knapsack problem. All the 6 hybrid particle swarm optimization algorithms are proved effective. Especially the hybrid particle swarm optimization algorithm derived from across strategy A and mutation strategy C is a simple yet effective algorithm and it has been applied successfully to investment problem. It can easily be modified for any combinatorial problem for which there has been no good specialized algorithm.
Keywords： particle swarm algorithm knapsack problem genetic algorithm mutation
The research on main engineering geological problems in dam-site of Three Gorges Project
Xue Guofu,Chen Youhua
Strategic Study of CAE 2011, Volume 13, Issue 7, Pages 51-60
The site geological investigation and research work of the Three Gorges Project (TGP) has lasted for more than 50 years, which catches wide attention at home and abroad due to its depth and extent. The research processes, approaches, contents and basic conclusions for the key engineering geological problems of dam site are briefly introduced, including the deep anti-sliding stability of dam foundation, the high slope stability of permanent ship-lock, the surrounding rock mass stability of the main plant of underground powerhouse and the faulted structures. Finally, an overall summarization and evaluation of the research are presented based on the situations of project construction, monitoring and operation.
Keywords： dam area of TGP engineering geological problems investigation and research summarization
Airline Disruption Management: A Review of Models and Solution Methods Review
Yi Su, Kexin Xie, Hongjian Wang, Zhe Liang, Wanpracha Art Chaovalitwongse, Panos M. Pardalos
Engineering 2021, Volume 7, Issue 4, Pages 435-447 doi: 10.1016/j.eng.2020.08.021
The normal operation of aircraft and flights can be affected by various unpredictable factors, such as severe weather, airport closure, and corrective maintenance, leading to disruption of the planned schedule. When a disruption occurs, the airline operation control center performs various operations to reassign resources (e.g., flights, aircraft, and crews) and redistribute passengers to restore the schedule while minimizing costs. We introduce different sources of disruption and corresponding operations. Then, basic models and recently proposed extensions for aircraft recovery, crew recovery, and integrated recovery are reviewed, with the aim of providing models and methods for different disruption scenarios in the practical implementation of airlines. In addition, we provide suggestions for future research directions in these topics.
Keywords： Disruption management Aircraft recovery problem Crew recovery problem Integrated recovery problem
The Status and Problems in Developing Private Use Car for China
Guo Konghui
Strategic Study of CAE 2000, Volume 2, Issue 8, Pages 25-30
Should China develop its private use car? What kind of passenger car should China develop? Should China develop its own passenger car industry? What is the way out for China´s passenger car industry? And how to develop Chinese passenger car industry? These questions are intensively concerned by more and more people, and lead to much discussion recently. In this paper, the author intends to give an analysis on some representative viewpoints that proposed recently, and also his own opinions. It is convinced that the way to solve the“auto disaster”problems is not to put more restrains on the use of private car, but to promote the applications of high-tech to automobiles, mean-while to strengthen city planning and traffic management.
The author confirms that the“technology import and joint venture”has had a positive impact on the progress of the manufacturing technology and management efficiency of Chinese auto industry, however there is also a negative effect on the self-development ability. It is proposed that the general strategy for Chinese auto industry will be“Self-Strengthening + International cooperation”which consists of the following strategies： high-tech strategy, twin-win with self-reliance strategy, internal union for self-strengthen strategy, self-own production right strategy, leap over development strategy.
Keywords： Chinese auto industry private use car family use car state and problems
Study on Incompatibility Problems SolvingBased on Extension Theory
Yang Chunyan
Strategic Study of CAE 2007, Volume 9, Issue 10, Pages 36-39
Based on the study of single-characteristic incompatibility problem and the transformation of solving it, the structure, judging methods and solving methods of multi-characteristic incompatibility problem are studied. The transformation for solving incompatibility problem is called solution transformation. Its applied value will be explained through its application in marketing. This study will provide new tools for the intelligent disposal of contradiction problem.
Keywords： incompatibility problem the function of compatible degree solution transformation extension set
Title Author Date Type Operation
Optimal two-impulse space interception with multiple constraints
Li Xie, Yi-qun Zhang, Jun-yan Xu,lixie@ncepu.edu.cn,yiqunzhang@hotmail.com,junyan_Xu@sina.cn
Journal Article
Application of Satellite Gravity Gradiometry Data to the Refinement of the Earth’s Gravity Field
Ning Jinsheng,Luo Zhicai,Chen Yongqi
Journal Article
Coverage performance of the multilayer UAV-terrestrial HetNet with CoMP transmission scheme
Weihao WANG, Yifan JIANG, Zesong FEI, Jing GUO,weihaowang@bit.edu.cn,jiangyifan@bit.edu.cn,feizesong@bit.edu.cn,jingguo@bit.edu.cn
Journal Article
Study on Intensifying Measures of Constructed Wetlands
Yan Lu,Wang Shihe,Zhong Qiushuang,Huang Juan
Journal Article
Influence Factors for Distribution of Smoke Concentration in Small-scale Experiment
Huang Rui,Yang Lizhong,Feng Wenxing,Fang Tingyong,Fan Weicheng
Journal Article
Post-quantum blind signcryption scheme from lattice
Huifang Yu, Lu Bai,yuhuifang@xupt.edu.cn
Journal Article
Achievements, Problems and Prospects in China´s Water Conservancy Construction
Pan Jiazheng
Journal Article
Solving Knapsack Problem by Hybrid Particle Swarm Optimization Algorithm
Gao Shang,Yang Jingyu
Journal Article
The research on main engineering geological problems in dam-site of Three Gorges Project
Xue Guofu,Chen Youhua
Journal Article
Airline Disruption Management: A Review of Models and Solution Methods
Yi Su, Kexin Xie, Hongjian Wang, Zhe Liang, Wanpracha Art Chaovalitwongse, Panos M. Pardalos
Journal Article
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