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Wang Sunan,Wu Canyang
Strategic Study of CAE 2013, Volume 15, Issue 1, Pages 73-78
To solve the path planning problem of mobile robots in complicated environments, combining the small computational amount of artificial potential field and the adaptive regulation ability of artificial immune network, an improved immunity path planning algorithm is presented. To further improve the search ability and convergence of immune network, the planning results of artificial potential field are taken as the prior knowledge to construct the guidance weight, and the antibody instruction definition and distance changes after the antibody transition are taken as the variables to construct the antibody transmission probability operator. Compared with the correlative planning algorithms, simulation results indicate that the optimal planning ability and network convergence of proposed algorithm is highly improved.
Keywords： immune network artificial potential field mobile robots path planning
Yan Shao, Zhi-feng Zhao, Rong-peng Li, Yu-geng Zhou,shaoy@zju.edu.cn,zhaozf@zhejianglab.com,lirongpeng@zju.edu.cn,yugeng.zhou@wfjyjt.com
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 5, Pages 649-808 doi: 10.1631/FITEE.1900659
Keywords： 群体智能；数字信息素；人工势场；领航算法
A collaborative assembly for low-voltage electrical apparatuses Research Article
Huanpei LYU, Libin ZHANG, Dapeng TAN, Fang XU,lvhuanpei@nbufe.edu.cn,lbz@zjut.edu.cn,tandapeng@zjut.edu.cn,fangx@zjut.edu.cn
Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 6, Pages 890-905 doi: 10.1631/FITEE.2100423
Keywords： Low-voltage electrical apparatus Collaborative assembly Artificial potential field based planning Adaptive quantum genetic algorithm Dynamic interaction
APFD: an effective approach to taxi route recommendation with mobile trajectory big data Research Article
Wenyong ZHANG, Dawen XIA, Guoyan CHANG, Yang HU, Yujia HUO, Fujian FENG, Yantao LI, Huaqing LI
Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 10, Pages 1494-1510 doi: 10.1631/FITEE.2100530
With the rapid development of data-driven intelligent transportation systems, an efficient method for taxis has become a hot topic in smart cities. We present an effective taxi approach (called APFD) based on the (APF) method and method with mobile trajectory big data. Specifically, to improve the efficiency of , we propose a method that searches for a region including the optimal route through the origin and destination coordinates. Then, based on the APF method, we put forward an effective approach for removing redundant nodes. Finally, we employ the method to determine the optimal . In particular, the APFD approach is applied to a simulation map and the real-world road network on the Fourth Ring Road in Beijing. On the map, we randomly select 20 pairs of origin and destination coordinates and use APFD with the ant colony (AC) algorithm, greedy algorithm (A∗), APF, rapid-exploration random tree (RRT), non-dominated sorting genetic algorithm-II (NSGA-II), particle swarm optimization (PSO), and for the shortest . Compared with AC, A∗, APF, RRT, NSGA-II, and PSO, concerning shortest route planning, APFD improves route planning capability by 1.45%–39.56%, 4.64%–54.75%, 8.59%–37.25%, 5.06%–45.34%, 0.94%–20.40%, and 2.43%–38.31%, respectively. Compared with , the performance of APFD is improved by 1.03–27.75 times in terms of the execution efficiency. In addition, in the real-world road network, on the Fourth Ring Road in Beijing, the ability of APFD to recommend the shortest route is better than those of AC, A∗, APF, RRT, NSGA-II, and PSO, and the execution efficiency of APFD is higher than that of the method.
Keywords： Big data analytics Region extraction Artificial potential field Dijkstra Route recommendation GPS trajectories of taxis
Study on Techniques of Pollution Prevention and Treatment of Livestock and Poultry Farms in Scale
Bian Yousheng,Jin Dongxia
Strategic Study of CAE 2004, Volume 6, Issue 3, Pages 53-57
Pollution prevention and treatment of livestock and poultry farms in scale is a priority in the pollution prevention of China´s rural environment,and also is key to blocking the problem sources of pollution in village. . Based on in-depth investigation, research and successful experience in the world, this paper puts forward techniques of pollution prevention and treatment involving solid muck treatment and recycling use, wastewater treatment and multipurpose utilization,and the deodorization in farms. The paper focuses on various techniques of wastewater treatment and multipurpose utilization in farm, It also evaluates the common techniques such as natural bio-treatment of wastewater, anaerobic bio-treatment, aerobic bio-treatment and advanced techniques (such as anaerobic-aerobic combined treatment, eco-engineering treatment technique).
Keywords： the farm pollution prevention and treatment solid muck treatment wastewater treatment deodorization technique
Light field imaging: models, calibrations, reconstructions,and applications Review
Hao ZHU, Qing WANG, Jingyi YU
Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9, Pages 1236-1249 doi: 10.1631/FITEE.1601727
Keywords： Light field imaging Plenoptic function Imaging model Calibration Reconstruction
Multi-aperture optical imaging systems and their mathematical light field acquisition models Review Article
Qiming QI, Ruigang FU, Zhengzheng SHAO, Ping WANG, Hongqi FAN
Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 6, Pages 823-844 doi: 10.1631/FITEE.2100058
Inspired by the compound eyes of insects, many s have been proposed to improve the imaging quality, e.g., to yield a high-resolution image or an image with a large field-of-view. Previous research has reviewed existing s, but few papers emphasize the which is essential to bridge the gap between configuration design and application. In this paper, we review typical s (i.e., , , and ), and then summarize general mathematical s for different configurations. These mathematical models provide methods for calculating the key indexes of a specific , such as the field-of-view and sub-image overlap ratio. The mathematical tools simplify the quantitative design and evaluation of imaging systems for researchers.
Keywords： Multi-aperture optical imaging system Artificial compound eye Light field camera Camera array Light field acquisition model
Engineering System of Weather Modification in China
He Zhijin,Wang Guanghe,Wang Yuzeng
Strategic Study of CAE 2000, Volume 2, Issue 7, Pages 87-91
Weather modification (rain enhancement, hail suppression, fog clearing, etc.) is introduced in this paper, including the basic scientific principle, history of development, present status, scientific-technical progress, scope of activities, increasing demand, organization, etc. , in China and abroad. A typical operational system of weather modification in China is described, which consists of monitoring and forecasting of weather and cloud, seeding technology (conception model, seeding criteria, effective agent, delivery system) ,numerical modeling, communication-commanding and evaluating systems. The importance of scientific-technical research system is emphasized. The main aspects of research on the concerned applied sciences and technical development are proposed. The important role of long-term stable scientific demonstrative experiments is explained. The direction of further development in this field is also suggested.
Keywords： weather modification precipitation enhancement hail suppression fog clearing engineering system
Zhang Dengchun,Weng Peifen
Strategic Study of CAE 2007, Volume 9, Issue 11, Pages 80-86
Based on steady state incompressible Reynolds-averaged Navier-Stokes equation, turbulence model, the three-dimension airflow and concentration fields in passenger car are calculated numerically. Regarding passengers as cubes and the exhalant CO2 as representative contaminant respectively, the airflow and concentration distributions are investigated in non-empty state. The results show that existing sew supply modes make the airflow distribution homogeneous except for the ends. Body heat and solar radiation have much influence on airflow and temperature fields. The air distribution in occupied passenger car differs from that in empty one. The heat flux from body heat and solar radiation produces a much big temperature gradient in occupied passenger car. The concentration is low in gangway zone while high in seat zone with crowded passengers. The concentration in middle section is higher than that in end section and contaminant gathers in respiratory region, and the polluted air can´t be exchanged effectively in seat zone, which is disadvantageous to air quality in passenger car.
Keywords： passenger car turbulence model airflow field concentration field computational fluid dynamics
Wang Zhibin,Wang Qingming
Strategic Study of CAE 2009, Volume 11, Issue 1, Pages 67-74
On the basis of the research results of the project, the Research on the Industrialization of Freely Supported Box and Girder for Passenger Express Line, in Ministry of Railways and China Railway Construction Corporation, and the programming and design experience for almost 30 girder prefabrication fields, the three important aspects of girder field construction, i.e. site election, plane layout and corollary equipment, are discussed in depth.
Keywords： passenger express line girder field site selection plane layout corollary equipment
HY-2A microwave scatterometer wind retrieval algorithm
Lin Mingsen,Zou Juhong,Xie Xuetong and Zhang Yi
Strategic Study of CAE 2013, Volume 15, Issue 7, Pages 68-74
The routine wind fields retrieval algorithm for China's microwave scatterometer onboard HY-2A (HY2-SCAT) was developed. By introducing a two-step search schema into the wind retrieval process, which included a coarse-search and an optimal-search, the efficiency of wind retrieval was greatly improved. Circular median filter was applied to remove the ambiguities, and the NCEP wind field was used as a background to re-initialized wind field consists of ambiguous wind vectors, so that the ambiguity removal skill can be largely enhanced. Wind vectors observed by HY2-SCAT were evaluated by comparison with NDBC buoy observations and ASCAT observations. The RMS difference was less than 2 m/s or less than 10 % for the comparison of wind speeds and the RMS difference was less than 20 degree for the comparison of wind direction, which indicated that the wind products provided by HY2-SCAT can meet the requirements for science and routine meteo users.
Keywords： HY-2A microwave scatterometer wind fields retrieval algorithm
The study on oceanic vector wind field retrieve technique of the HY-2 satellite
Jiang Xingwei,Lin Mingsen
Strategic Study of CAE 2009, Volume 11, Issue 10, Pages 86-95
A retrieving oceanic vector wind algorithm and the precision analysis of its error in accordance with the HY-2 satellite's microwave scatterometer was put forward in the paper, and a technical process of data acquisition, pre-process, wind vector retrieve and production manufacture about the HY-2 satellite microwave scatterometer was also given. It will be ready on technology for making a due ontribution once the HY-2 satellite is launched and promotes our country's oceanic microwave remote sensing technique development.
Keywords： HY-2 satellite microwave scatterometer wind firld retrieve vector wind filed error analysis
Looking Back and Prospecting to the Project Design ofthe Spaceflight Launching Site in China
Zhang Zeming
Strategic Study of CAE 2007, Volume 9, Issue 4, Pages 1-5
This paper introduces the development history of the project design of spaceflight launching site in China and the main forms used in the design, and points out that there shouldn't exist only one fixed mode for the spacecraft launch. China should, according to its national condition, design and build the launching project facility and device that correspond to the technology development of spacecraft and carrier rocket.
Keywords： launching site project design development history integrated mode
Wang Zhenzhan,Jiang Jingshan,Liu Jingyi,Yin Xiaobin
Strategic Study of CAE 2008, Volume 10, Issue 6, Pages 76-86
Microwave microwave polarimeter is a sensor of measuring not only the vertical-and horizontal-polarization, but also the third and/or the forth Stokes parameters. It realizes all information about electromagnetic wave, including frequency, phase, amplitude and polarization,to be measured by a senor. The correlated information of the first two Stokes parameters is more sensitive to the anisotropy of the ocean surface. Wind direction retrieval is one of the initial motivations of the polarimeter development. In this paper, the progress and characteristic on polarimeter development are introduced and theories of ocean wind vector remote sensing are analyzed. Oceanic emission and scattering model is develoked for remote sensing wind vector using passive polarimetric microwave radiometer. The critical techniques on its system design, which include receiver and calibration methods, are discussed in order to realize scientific target of wind retrievals. Furthermore more efforts are paid on expatiating scientific topics on wind reversion methods, including geophysical model function built-up, influences of main technical specifications on retrieval precision, and wind direction ambiguity removal methods by data-processing methods and scanning geometry. The calibration errors and main specifications of polarimetric radiometer,which have significant influences on the accuracy of wind vector retrieval,are summed in detail.Finally,a new scanning geometry with fore-aft-look to remove wind direction ambiguous solution is put forward.
Keywords： polarimetric microwave radiometer wind vector retrieval calibration
The zero-point energy of vibration and the Casimir force
Huang Zhixun
Strategic Study of CAE 2008, Volume 10, Issue 5, Pages 63-69
Put two metal sheets very close together in vacuum, we'll find they attract each other with a small but measurable force. The explanation for the Casimir effect is that empty space is cracking with zero-point energy(ZPE), a phenomenon arising from quantum theory, and this energy pushes the metal plates together. All scientists agree that such a force does exist, but the trouble is physicists can't agree on what it means for something to be true. Is empty space really fizzing with energy? Perhaps the answer may determine the fate of the universe. A variety of anomalous phenomena in nature or at laboratories could be explained by the Casimir effect and the torsion field theory.
Keywords： zero-point energy zero-point field energy of vacuum Casimir force theory of torsion field
Title Author Date Type Operation
An improved immunity path planning algorithm for mobile robots based on the guidance weight of artificial potential field
Wang Sunan,Wu Canyang
Journal Article
Target detection for multi-UAVs via digital pheromones and navigation algorithm in unknown environments
Yan Shao, Zhi-feng Zhao, Rong-peng Li, Yu-geng Zhou,shaoy@zju.edu.cn,zhaozf@zhejianglab.com,lirongpeng@zju.edu.cn,yugeng.zhou@wfjyjt.com
Journal Article
A collaborative assembly for low-voltage electrical apparatuses
Huanpei LYU, Libin ZHANG, Dapeng TAN, Fang XU,lvhuanpei@nbufe.edu.cn,lbz@zjut.edu.cn,tandapeng@zjut.edu.cn,fangx@zjut.edu.cn
Journal Article
APFD: an effective approach to taxi route recommendation with mobile trajectory big data
Wenyong ZHANG, Dawen XIA, Guoyan CHANG, Yang HU, Yujia HUO, Fujian FENG, Yantao LI, Huaqing LI
Journal Article
Study on Techniques of Pollution Prevention and Treatment of Livestock and Poultry Farms in Scale
Bian Yousheng,Jin Dongxia
Journal Article
Light field imaging: models, calibrations, reconstructions,and applications
Hao ZHU, Qing WANG, Jingyi YU
Journal Article
Multi-aperture optical imaging systems and their mathematical light field acquisition models
Qiming QI, Ruigang FU, Zhengzheng SHAO, Ping WANG, Hongqi FAN
Journal Article
Engineering System of Weather Modification in China
He Zhijin,Wang Guanghe,Wang Yuzeng
Journal Article
Enhace Independent Innovation Ablity of Paper Industry,Construct Innovation System of Paper Technology
Zhang Dengchun,Weng Peifen
Journal Article
Optimization design and corollary equipment of box girder prefabrication field for passenger express line
Wang Zhibin,Wang Qingming
Journal Article
HY-2A microwave scatterometer wind retrieval algorithm
Lin Mingsen,Zou Juhong,Xie Xuetong and Zhang Yi
Journal Article
The study on oceanic vector wind field retrieve technique of the HY-2 satellite
Jiang Xingwei,Lin Mingsen
Journal Article
Looking Back and Prospecting to the Project Design ofthe Spaceflight Launching Site in China
Zhang Zeming
Journal Article
Critical technique and scientific topic on fully polarized microwave radiometer remote sensing sea surface wind vector
Wang Zhenzhan,Jiang Jingshan,Liu Jingyi,Yin Xiaobin
Journal Article
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