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A microstrip filter direct-coupled amplifier based on active coupling matrix synthesis Research Articles
Yang Gao, Fan Zhang, Yingying Qiao, Jiawei Zang, Lei Li, Xiaobang Shang,gaoyang678@outlook.com,lilei@zzu.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 9, Pages 1260-1269 doi: 10.1631/FITEE.2000292
Keywords： 放大器；滤波–放大器集成；微带线；耦合矩阵
An algorithm of neighbor relationship oriented contour tree building
Guo Peipei,Li Chengming,Yin Yong
Strategic Study of CAE 2013, Volume 15, Issue 5, Pages 42-46
A contour tree has been found many important applications in extraction of terrain structure lines, terrain analysis, etc. A regular contour tree expressing the spatial relationship of contours is difficult to build, even with data of high quality. A new method is proposed in this paper： classify contours into close group and open group; build contour tree for each group respectively; finally amalgamate these two contour trees into one. With the elevation values, spatial relationship of contours is of easy accessibility. The result shows that the above mentioned method is correct and effective.
Keywords： contour tree neighbor relationship elevation value close contour unclosed contour
Experimental study of free abrasive wire sawing for multi strands wire
Wang Jinsheng,Yao Chunyan,Peng Wei,Jin Xin,Chen Shijie
Strategic Study of CAE 2012, Volume 14, Issue 11, Pages 94-98
Grains in the slurry enter into cutting area by steel wire with a certain speed and remove the workpiece material in the free brasive wire sawing. Multi-strands wire is made by metal wires and has many grooves in the surface compared with steel wire. Therefore it can carry more grains into cutting area and improve the slicing efficiency. In this paper, optical glass K9 were cut by multi strands wire (0.25 mm) and steel wire (0.25 mm).The results show that multi strands wire is better than steel wire in slicing efficiency and surface roughness, but the kerf loss is wider than steel wire under the same process conditions.
Keywords： ire saw free abrasive machining slicing efficiency
Correspondence: Monopulse transmitarray antenna fed by aperture-coupled microstrip structure Correspondence
Na KOU, Shixing YU, Zhao DING, Zhengping ZHANG,nkou@gzu.edu.cn,sxyu1@gzu.edu.cn,zding@gzu.edu.cn,zpzhang@gzu.edu.cn
Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 3, Pages 502-510 doi: 10.1631/FITEE.2000547
Keywords： 孔径耦合；单脉冲天线；微带；透射阵列
Wind profiler radar to monitor the dust weather
Wei Wenshou,Wang Minzhong,He Qing
Strategic Study of CAE 2012, Volume 14, Issue 10, Pages 51-56
The Urumqi Institute of Desert Meteorology of China Meteorological Administration (CMA) carried out an atmospheric scientific experiment on the detection of dust weather using a wind profiler radar in the hinterland of the Taklimakan Desert in April 2010. Based on the wind profiler radar data obtained from this experiment, this paper analyzes the characteristics of the horizontal wind field and vertical velocity of a breaking dust weather in a desert hinterland, calculates and gives the radar echo intensity and vertical distribution of a dust storm, blowing sand and floating dust weather, and discusses the atmospheric dust counts/concentration derived from the wind profiler radar data. Studies show that a wind profiler radar is an upper air atmospheric remote sensing system that effectively detects and monitors dust. It captures the beginning and ending of a dust weather process as well as monitors the sand and dust being transported in the air in terms of height, thickness and vertical intensity. The echo intensity of a blowing sand and dust storm weather episode in Taklimakan is about -3~10dBZ while that of floating dustis -15~-3 dBZ, indicating that the dust echo intensity is significantly weaker than that of precipitation while stronger than that of clear air.
Keywords： wind profiler radar dust weather echo intensity monitoring
He Yuting
Strategic Study of CAE 2006, Volume 8, Issue 6, Pages 23-27
Based on the analysis of the aircraft structural life envelope (ASLE) under the baseline operational conditions, an approach of establishment of aircraft structural life envelope (ASLE) under nonbaseline operational conditions is presented. The method of service life supervision for individual aircraft structural system(SLSFIASS) under nonbaseline operational conditions is given. Taking the supervision of the time between the first and second overhauls for an aircraft structural system for example, the supervising methods and steps of SLSFIASS are demonstrated.
Keywords： aircraft structure life envelope service life supervision time between overhauls
Shield selection and function design of Beijing underground diameter line
Han Yali,Lv Chuantian,Zhang Ningchuan
Strategic Study of CAE 2010, Volume 12, Issue 12, Pages 29-34
According to the diameter of the tunnel and the geological conditions, considered factors of equipment selection and the choice of models of the large diameter tunnel of the Beijing underground diameter tunnel project were analysed, the main functions and geological suitability of shield type configure were described, and the main data of the structure and equipped capability were calculated and described. The issues and problems that need to be paid attention for selection and design of shield were proposed.
Keywords： railways underground diameter line shield selection shield functional design
Research on Operations Management Based on the Internet of Things and BIM of Urban Lifeline
Chen Xinghai,Ding Lieyun
Strategic Study of CAE 2014, Volume 16, Issue 10, Pages 89-93
Frequent occurrences of safety accident in urban lifeline engineering will cause concern about its security operations management again, and which becomes an important subject of urban emergency management. According to the current situation of security operations management in urban lifeline engineering, the paper analyses the problems existing in the operational phase of urban lifeline, and discusses the adaptability of the Internet of Things(IOT) and Building Information Modeling(BIM) with the characters, and puts forward a systemSframeworkSfor the securitySoperationsSmanagement center of urban lifeline based on the IOT and BIM. ThisSisSaSkeySpointSforSurban management and theSbasisSforSfuture smart city.
Keywords： Internet of Things(IOT) Building Information Modeling(BIM) Urban Lifeline Engineering Operations Management
Zhu Dianxiang
Strategic Study of CAE 2014, Volume 16, Issue 4, Pages 13-16
As an important field of the conversion of biomass energy，biomass fuel pellets （commonly known as“wood- pellet”）get more and more attention. This paper discusses the combustion performance，the effect of energy conservation and emissions reduction，manufacturing technology and research achievement of the key production equipments. On the basis，the large-scale(annual output of 2.0×105 t) and low-cost wood-pellet production line is completed finally，which has an important demonstration significance to promote the healthy development of wood-pellet industry.
Keywords： biomass fuel pellet combustion performance energy conservation and emissions reduction production line manufacturing technology key equipments
He Feng,Li Xiaogang,Sun Shanhui
Strategic Study of CAE 2010, Volume 12, Issue 12, Pages 35-40
Based on the underground diameter line engineering experience from Beijing railway station to Beijing railway west station, through the application contrast of various cutter tool configurations under sandy gravel, a detailed comparative analysis of cutter tool adaptability was done focusing before and after transformation. The key issues were proposed about cutter tool configuration under sandy gravel, which can be reference to similar projects.
Keywords： diameter line slurry shield cutter tool adaptability
Geng Zhixiu
Strategic Study of CAE 2008, Volume 10, Issue 3, Pages 31-43
Datong—Qinhuangdao line, as the first electrified double-track heavy-haul line dedicated to coal transportation in China, extends from Beitongpu line in the west,reaches Qinhuangdao in the east,and opened in Dec., 1992, totaling 653 km with designed volume of 1×108 t/a. In order to meet the requirements of national economical development, the transport capacity of the line must be expanded rapidly. Depending on independent innovation, MOR,for the first time in the world,realized the integration between GSM-R and Locotrol, the integration between 800 MHz digital radio and Locotrol, and the integration between a single set of Locotrol and SS4. Meanwhile, it developed auxiliary equipment for heavy-haul transportation through combining 2 Hexie heavy-duty locomotives with controllable train ends. Relying on integration innovation, it succeeded in operating 20 kt-level combined heavy-haul train on Datong—Qinhuangdao line, which triples the annual volume of the line from 1×108 t in 2002 to 3×108 t in 2007.
Keywords： China railways Datong—Qinhuangdao line 20 kt-level combined heavy-haul train integration innovation
Quick safety construction technology on electric railway multiple line’s tunnel blast boring
Wang Faming
Strategic Study of CAE 2008, Volume 10, Issue 5, Pages 58-62
How to ensure the existing tunnel's safety and the train normal running while the electric railway multiple line tunnel was blast boring? By study and practice,the paper gives an answer through stepped digging method, underholing style, holes scatter and the structure of the hole and detonation technology. It receives good technological achievement and remarkable social and economic benefits in practical application. It provides successful experience for the similar engineering in the future too.
Keywords： electric railway the existing tunnel multiple line tunnel stepped digging underholing style
Sun Gennian,Ma Lijun
Strategic Study of CAE 2007, Volume 9, Issue 6, Pages 32-37
The SARS in 2003 is a public health crisis in China. The passenger transport witnesses serious landslide and suffers a heavy loss. In this article, the loss of passenger transport and its regional difference impacted by SARS are analyzed and estimated. The loss of passenger transport is nearly 1. 007 billion person- times in 2003 impacted by SARS crisis, in which the highway transportation loss is 888 million, the railway loss is 105 million, the aviation is 16. 12 million and water carriage is 19. 43 million. As a short breaking event, it starts from March in 2003 for the crisis formation, breaks out in whole from May to June, and enters the decay and comeback from July to August, and has a compensating from November to December after the crisis. Due to the difference in transport location and epidemic situation, the loss of passenger transport impacted by SARS in 28 provinces in China can be classified into 4 types. Guangdong, Sichuan and Hebei suffer the most and the loss is over 100 million person-times. The relativity analysis is carried out based on the loss of transportation, cardinal number in 2003 and the number of infect person of SARS, and a new spatial forecast model is put forward for space forecast in transport crisis. The model shows that the marginal coefficient of transportation cardinal number is 0. 788 46, the marginal coefficient of SARS patients is 0. 075 868.
Keywords： SARS crisis background trend line loss of transportation terrain distribution spatial model
The study of slip line field and upper bound method based on the non-associated flow rule
Zheng Yingren,Deng Chujian,Wang Jinglin
Strategic Study of CAE 2010, Volume 12, Issue 8, Pages 56-69
The slip line field theory and the upper bound method based on the associated flow rule for the traditional plastic theory don't accord with the experiment for geotechnical material ,so the non-associated flow rule must be applied to geotechnical material which indicates the stress characteristic line don't coincide with the velocity line. In this paper some problems existing in the slip line field theory and the upper bound method based on the associated flow rule were analyzed. The slip line field theory and the upper bound method based on the non-associated flow rule were deduced according to the generalized plastic theory , which eliminated some inconsistencies in the slip line field theory and the upper bound method based on the associated flow rule for the traditional plastic theory.
Keywords： slip line field upper bound method associated flow rule non-associated flow rule generalized plastic theory
The Undersea Tunnel on Qingdao Metro Line 8
Weiguo He, Peng Liu
Engineering 2018, Volume 4, Issue 2, Pages 167-169 doi: 10.1016/j.eng.2018.03.012
Title Author Date Type Operation
A microstrip filter direct-coupled amplifier based on active coupling matrix synthesis
Yang Gao, Fan Zhang, Yingying Qiao, Jiawei Zang, Lei Li, Xiaobang Shang,gaoyang678@outlook.com,lilei@zzu.edu.cn
Journal Article
An algorithm of neighbor relationship oriented contour tree building
Guo Peipei,Li Chengming,Yin Yong
Journal Article
Experimental study of free abrasive wire sawing for multi strands wire
Wang Jinsheng,Yao Chunyan,Peng Wei,Jin Xin,Chen Shijie
Journal Article
Correspondence: Monopulse transmitarray antenna fed by aperture-coupled microstrip structure
Na KOU, Shixing YU, Zhao DING, Zhengping ZHANG,nkou@gzu.edu.cn,sxyu1@gzu.edu.cn,zding@gzu.edu.cn,zpzhang@gzu.edu.cn
Journal Article
Service Life Supervision for Individual Aircraft Structural System Based on Aircraft Structural Life Envelope
He Yuting
Journal Article
Shield selection and function design of Beijing underground diameter line
Han Yali,Lv Chuantian,Zhang Ningchuan
Journal Article
Research on Operations Management Based on the Internet of Things and BIM of Urban Lifeline
Chen Xinghai,Ding Lieyun
Journal Article
The research and development of biomass fuel pellets production line and key manufacturing technology
Zhu Dianxiang
Journal Article
The adaptability analysis of cutter tool to slurry shield of Beijing railway underground diameter line
He Feng,Li Xiaogang,Sun Shanhui
Journal Article
System Integration and Innovation of Operating 20 kt Combined Heavy-haul Train on Datong—Qinhuangdao Line
Geng Zhixiu
Journal Article
Quick safety construction technology on electric railway multiple line’s tunnel blast boring
Wang Faming
Journal Article
Post-Impact Evaluation of SARS in 2003 on Transportation in China———Loss Estimation of２８Provinces in China Based on Background-Trend-Line
Sun Gennian,Ma Lijun
Journal Article
The study of slip line field and upper bound method based on the non-associated flow rule
Zheng Yingren,Deng Chujian,Wang Jinglin
Journal Article
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