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monitoring stations in water distribution systems under multiple demand patterns: a flaw of demand coverage

Shuming LIU, Wenjun LIU, Jinduan CHEN, Qi WANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 204-212 doi: 10.1007/s11783-011-0364-9

Abstract: A flaw of demand coverage method in solving optimal monitoring stations problem under multiple demandIn the demand coverage method, the demand coverage of each set of monitoring stations is calculated byaccumulating their demand coverage under each demand pattern, and the impact of temporal distributionTo overcome this flaw, this paper presents a Demand Coverage Index (DCI) based method.

Keywords： demand coverage     monitoring     optimization     water distribution network     water quality    

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A-STC: auction-based spanning tree coverage algorithm formotion planning of cooperative robots Research Article

Guan-qiang GAO, Bin XIN

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 1,   Pages 18-31 doi: 10.1631/FITEE.1800551

Abstract:

The multi-robot coverage motion planning (MCMP) problem in which every reachable area must be covered, we propose an efficient, complete, and off-line algorithm, named the “auction-based spanning tree coverageFirst, the configuration space is divided into mega cells whose size is twice the minimum coverage rangeA robot that circumnavigates a spanning tree of the graph can generate a coverage trajectory.After auction processes, acceptable coverage trajectories can be planned rapidly.

Keywords： Coverage motion planning     Multi-robot system     Auction algorithm     Spanning tree coverage algorithm    

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Effects of alfalfa coverage on runoff, erosion and hydraulic characteristics of overland flow on loess

Shufang WU, Pute WU, Hao FENG, G. P. Merkley

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 76-83 doi: 10.1007/s11783-011-0282-x

Abstract: An evaluation of the interactions between vegetation, overland and soil erosion can provide valuable insight for the conservation of soil and water. An experiment was conducted to study water infiltration, runoff generation process, rate of sediment erosion, and hydrodynamic characteristics of overland flow from a sloping hillside with different draw-off discharges from alfalfa and control plots with 20° slope. The effect of alfalfa on runoff and sediment transport reduction was quantitatively analyzed. Alfalfa was discussed for its ability to reduce the overland flow scouring force or change the runoff movement. Compared to the bare-soil plots, alfalfa plots generated a 1.77 times increase in infiltration rate. Furthermore, the down-slope water infiltration rate for the bare soil plots was higher than in the up-slope, while the opposite was found in the alfalfa plots. In addition, alfalfa had a significant effect on runoff and sediment yield. In comparison to the control, the runoff coefficient and sediment transportation rate decreased by 28.3% and 78.4% in the grass slope, respectively. The runoff generated from the alfalfa and bare-soil plots had similar trends with an initial increase and subsequent leveling to a steady-state rate. The transport of sediment reduced with time as a consequence of the depletion of loose surface materials. The maximum sediment concentration was recorded within the first few minutes of each event. The alfalfa plots had subcritical flow while the bare-soil plots had supercritical flow, which indicate that the capability of the alfalfa slope for resisting soil erosion and sediment movement was greater than for bare soil plots. Moreover, the flow resistance coefficient and roughness coefficient for the alfalfa plots were both higher than for the bare-soil plots, which indicate that overland flow in alfalfa plots had retarded and was blocked, and the flow energy along the runoff path had gradually dissipated. Finally, the ability to erode and transport sediment had decreased.

Keywords： alfalfa     soil erosion     runoff and sedimentation     soil water infiltration     overland flow     hydrodynamic characteristics    

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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

Abstract: develop a tractable mathematical framework to characterize the aggregate interference and evaluate the coverage

Keywords： Unmanned aerial vehicle     Poisson point process     Coordinated multipoint (CoMP)     Statistics of interference     Coverage    

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Parameter value selection strategy for complete coverage path planning based on the Lü system to perform Research Article

Caihong LI, Cong LIU, Yong SONG, Zhenying LIANG

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 2,   Pages 231-244 doi: 10.1631/FITEE.2200211

Abstract: The algorithm can meet the requirements of high randomness and coverage rate to perform specific typesrate to study the relationship between the coverage rate and the random characteristics of the variablesgradually narrows the value range of the parameter according to the randomness requirement of the coveragestrategy, proper variables can be chosen with a larger to construct a chaotic robot with a higher coverageThe proposed strategy for enhancing the coverage rate of the mobile robot can improve the efficiency

Keywords： Chaotic mobile robot     Lü     system     Complete coverage path planning (CCPP)     Parameter value selection strategy    

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Modified condition/decision coverage (MC/DC) oriented compiler optimization for symbolic execution

Wei-jiang Hong, Yi-jun Liu, Zhen-bang Chen, Wei Dong, Ji Wang,zbchen@nudt.edu.cn,wdong@nudt.edu.cn,wj@nudt.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 9,   Pages 1267-1412 doi: 10.1631/FITEE.1900213

Abstract: .) , which is an important testing coverage criterion widely used for mission-critical software.
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A chaotic coverage path planner for the mobilerobot based on the Chebyshev map for special missions Article

Cai-hong LI, Yong SONG, Feng-ying WANG, Zhi-qiang WANG, Yi-bin LI

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1305-1319 doi: 10.1631/FITEE.1601253

Abstract: Then a universalalgorithm of coverage path planning is designed for environments withobstacles.The designed strategy is ableto satisfy the requirements of randomness, coverage, and high efficiencyfor

Keywords： Mobile robot     Chebyshev map     Chaotic     Affine transformation     Coverage path planning    

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A deployment strategy for wireless sensor networks using indoor radio propagation model

Huo Hongwei,Gao Shuai,Niu Yanchao,Zhang Sidong

Strategic Study of CAE 2008, Volume 10, Issue 9,   Pages 64-69

Abstract: In this paper, the variance of coverage caused by the different antenna's height is analyzed, usingcommunication ranges, and eliminates the useless antenna's height parameter which can not affect the full coverage

Keywords： wireless sensor network     effective communication range     effective sensing range     sensing collapsar     coverage    

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Dynamic user-centric multi-dimensional resource allocation for a wide-area coverage signaling cell based Research Article

Zhou TONG, Na LI, Huimin ZHANG, Quan ZHAO, Yun ZHAO, Junshuai SUN, Guangyi LIU,tongzhou@chinamobile.com,linawx@chinamobile.com,zhanghuiminyjy@chinamobile.com

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 1,   Pages 154-163 doi: 10.1631/FITEE.2200220

Abstract: The rapid development of communications industry has spawned more new services and applications. The sixth-generation wireless communication system () network is faced with more stringent and diverse requirements. While ensuring performance requirements, such as high data rate and low latency, the problem of high energy consumption in the fifth-generation wireless communication system (5G) network has also become one of the problems to be solved in . The technology conforms to the future development trend of radio access networks, and has the advantages of reducing network energy consumption and improving resource utilization. In s, on-demand is an important technical means to ensure the ultimate performance requirements of users, and its effect will affect the efficiency of network resource utilization. This paper constructs a user-centric dynamic allocation model of wireless resources, and proposes a deep Q-network based dynamic resource allocation algorithm. The algorithm can realize dynamic and flexible admission control and in s according to the data rate and latency demands of users. According to the simulation results, the proposed algorithm can effectively improve the average user experience on a long time scale, and ensure network users a high data rate and low energy consumption.

Keywords： 6G     Wide-area coverage signaling cell     Multi-dimensional resource allocation     Deep Q-network (DQN)    

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Corpus-based research on English word recognition rates in primary school and word selection strategy Article

Wen-yan XIAO,Ming-wen WANG,Zhen WENG,Li-lin ZHANG,Jia-li ZUO

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 3,   Pages 362-372 doi: 10.1631/FITEE.1601118

Abstract: Acquiring vocabulary is important when studying English, as it assists in listening, speaking, reading, and writing. In this paper, we develop an English webpage corpus (EWC) and create a word frequency list using web crawler technology. By comparing EWC word lists with the British National Corpus (BNC), we find that the BNC word frequency list possesses the feature of timeliness. We also explore primary school students’ English word recognition rates by comparing the word frequency lists of several corpora, including EWC, BNC, SUBTLEX-US, and Subtitle Corpus of Children’s BBC (CBBC). The results show that the word recognition rates for primary school children are relatively low in both general language and specific language register. Motivated by the experiment results, we finally propose some word-selection strategies for compiling English textbooks for Chinese primary school students.

Keywords： Corpus     Primary English     Recognition rate     Word frequency     Coverage rate    

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Optimal design of a large dual-polarization microstrip reflectarray with China-coverage patterns for Research Articles

Gang ZHAO, Yong-chang JIAO, Guan-tao CHEN

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1,   Pages 159-173 doi: 10.1631/FITEE.1900496

Abstract: A large dual-polarization microstrip reflectarray with China-coverage patterns in two operating bandsSimulation results show that patterns of the reflectarray meet the China-coverage requirements in two

Keywords： Reflectarray     Dual-polarization     Shaped beam     Phase-only synthesis    

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Complete coverage path planning for an Arnold system based mobile robot to perform specific types of Regular Article

Cai-hong Li, Chun Fang, Feng-ying Wang, Bin Xia, Yong Song,lich@sdut.edu.cn

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 11,   Pages 1530-1542 doi: 10.1631/FITEE.1800616

Abstract: We propose a algorithm to plan a complete coverage trajectory for a mobile robot to accomplish specificSecond, we construct the s including the initial points with a relatively high coverage rate of the constructedto the current position of the robot based on the designed strategy, to form a continuous complete coveragedesigned algorithm requires no obstacle avoidance to the boundary of the given workplace, possesses a high coveragerate, and keeps the chaotic characteristics of the produced coverage trajectory relatively unchanged

Keywords： 混沌机器人；Arnold动力学系统；压缩变换；全覆盖遍历路径；候选集    

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Title Author Date Type Operation

monitoring stations in water distribution systems under multiple demand patterns: a flaw of demand coverage

Shuming LIU, Wenjun LIU, Jinduan CHEN, Qi WANG

Journal Article

A-STC: auction-based spanning tree coverage algorithm formotion planning of cooperative robots

Guan-qiang GAO, Bin XIN

Journal Article

Effects of alfalfa coverage on runoff, erosion and hydraulic characteristics of overland flow on loess

Shufang WU, Pute WU, Hao FENG, G. P. Merkley

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

Parameter value selection strategy for complete coverage path planning based on the Lü system to perform

Caihong LI, Cong LIU, Yong SONG, Zhenying LIANG

Journal Article

Modified condition/decision coverage (MC/DC) oriented compiler optimization for symbolic execution

Wei-jiang Hong, Yi-jun Liu, Zhen-bang Chen, Wei Dong, Ji Wang,zbchen@nudt.edu.cn,wdong@nudt.edu.cn,wj@nudt.edu.cn

Journal Article

A chaotic coverage path planner for the mobilerobot based on the Chebyshev map for special missions

Cai-hong LI, Yong SONG, Feng-ying WANG, Zhi-qiang WANG, Yi-bin LI

Journal Article

A deployment strategy for wireless sensor networks using indoor radio propagation model

Huo Hongwei,Gao Shuai,Niu Yanchao,Zhang Sidong

Journal Article

Dynamic user-centric multi-dimensional resource allocation for a wide-area coverage signaling cell based

Zhou TONG, Na LI, Huimin ZHANG, Quan ZHAO, Yun ZHAO, Junshuai SUN, Guangyi LIU,tongzhou@chinamobile.com,linawx@chinamobile.com,zhanghuiminyjy@chinamobile.com

Journal Article

Corpus-based research on English word recognition rates in primary school and word selection strategy

Wen-yan XIAO,Ming-wen WANG,Zhen WENG,Li-lin ZHANG,Jia-li ZUO

Journal Article

Optimal design of a large dual-polarization microstrip reflectarray with China-coverage patterns for

Gang ZHAO, Yong-chang JIAO, Guan-tao CHEN

Journal Article

Complete coverage path planning for an Arnold system based mobile robot to perform specific types of

Cai-hong Li, Chun Fang, Feng-ying Wang, Bin Xia, Yong Song,lich@sdut.edu.cn

Journal Article