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Digital twin‐based multi‐objective autonomous vehicle navigation approach as applied in infrastructure construction

IET Cyber-Systems and Robotics 2024年第2期6卷 1-19页

作者： Tingjun Lei timothy sellers Chaomin Luo Lei Cao Zhuming Bi Department of Electrical and Computer Engineering Mississippi State UniversityMississippi StateMississippiUSA Department of Electrical and Computer Engineering University of MississippiUniversityMississippiUSA Department of Civil and Mechanical Engineering Purdue University Fort WayneFort WayneIndianaUSA

The widespread adoption of autonomous vehicles has generated considerable interest in their autonomous operation,with path planning emerging as a critical ***,existing road infrastructure confronts challenges due to prolonged use and insufficient *** research on autonomous vehicle navigation has focused on determining the trajectory with the shortest distance,while neglecting road construction information,leading to potential time and energy inefficiencies in real-world scenarios involving infrastructure *** address this issue,a digital twin-embedded multi-objective autonomous vehicle navigation is proposed under the condition of infrastructure *** authors propose an image processing algorithm that leverages captured images of the road construction environment to enable road extrac-tion and modelling of the autonomous vehicle ***,a wavelet neural network is developed to predict real-time traffic flow,considering its inherent ***,a multi-objective brainstorm optimisation(BSO)-based method for path planning is introduced,which optimises total time-cost and energy consumption objective *** ensure optimal trajectory planning during infrastructure con-struction,the algorithm incorporates a real-time updated digital twin throughout autonomous vehicle *** effectiveness and robustness of the proposed model are validated through simulation and comparative studies conducted in diverse scenarios involving road *** results highlight the improved performance and reli-ability of the autonomous vehicle system when equipped with the authors’approach,demonstrating its potential for enhancing efficiency and minimising disruptions caused by road infrastructure development.

关键词： autonomous vehicle intelligent robots motion planning navigation path planning robot planning

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Graph-based robot optimal path planning with bio-inspired algorithms

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Biomimetic Intelligence & Robotics 2023年第3期3卷 75-90页

作者： Tingjun Lei timothy sellers Chaomin Luo Daniel W.Carruth Zhuming Bi Department of Electrical and Computer Engineering Mississippi State UniversityMississippi State 39762USA Center for Advanced Vehicular Systems Mississippi State UniversityMississippi State 39762USA Department of Civil and Mechanical Engineering Purdue University Fort WayneFort Wayne 46805USA

Recently,bio-inspired algorithms have been increasingly explored for autonomous robot path planning on grid-based ***,these approaches endure performance degradation as problem complexity increases,often resulting in lengthy search times to find an optimal *** limitation is particularly critical for real-world applications like autonomous off-road vehicles,where highquality path computation is essential for energy *** address these challenges,this paper proposes a new graph-based optimal path planning approach that leverages a sort of bio-inspired algorithm,improved seagull optimization algorithm(iSOA)for rapid path planning of autonomous robots.A modified Douglas–Peucker(mDP)algorithm is developed to approximate irregular obstacles as polygonal obstacles based on the environment image in rough *** resulting mDPderived graph is then modeled using a Maklink graph *** applying the iSOA approach,the trajectory of an autonomous robot in the workspace is ***,a Bezier-curve-based smoothing approach is developed to generate safer and smoother trajectories while adhering to curvature *** proposed model is validated through simulated experiments undertaken in various real-world settings,and its performance is compared with state-of-the-art *** experimental results demonstrate that the proposed model outperforms existing approaches in terms of time cost and path length.

关键词： Autonomous robot Path planning Bio-inspired algorithm Graph-based model Improved seagull optimization algorithm(iSOA)

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Safety and efficacy of wireless capsule endoscopy in patients with surgically altered upper gastrointestinal anatomy

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Laparoscopic, Endoscopic and Robotic Surgery 2018年第1期1卷 12-14页

作者： Eric sellers Andrew Brock Internal Medicine Medical University of South CarolinaCharlestonSC 29425-2503USA Gastroenterology and Hepatology Medical University of South CarolinaCharlestonSC 29425USA

Background:Wireless capsule endoscopy(WCE)is an effective,minimally invasive tool used for evaluation of the small *** date,there are no studies evaluating the diagnostic yield of WCE in patients with surgically altered upper gastrointestinal ***:To evaluate the diagnostic yield,technical success and safety of WCE in patients with surgically altered upper gastrointestinal ***:Retrospective chart review of all patients with surgically altered upper GI anatomy who underwent WCE between 2006 and 2016 at the Medical University of South *** success,diagnostic yield,adverse events and therapeutic yield data was ***:Thirty-one cases met inclusion *** were excluded as they did not undergo WCE due to failed patency *** mean age was 58(69%female).The capsule was ingested in 18 cases and endoscopically placed in *** most common surgical anatomy was Roux-en-Y gastric bypass(n=13).Technical success,defined as the capsule reaching the cecum,was achieved in 89.7%of *** diagnostic yield was 44.8%,with the most common finding being *** intra-or postprocedural adverse events were ***:Capsule endoscopy in patients with surgically altered upper GI anatomy appears to show no elevated risk of adverse events and shows similar technical success and diagnostic yield as in patients with native anatomy.

关键词： Capsule endoscopy Diagnosis Digestive system surgical procedures Diagnostic techniques Gastric bypass

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Epidemiology of ovarian cancer:a review

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Cancer Biology & Medicine 2017年第1期14卷 9-32页

作者： Brett M.Reid Jennifer B.Permuth Thomas A.sellers Department of Cancer Epidemiology Division of Population SciencesMoffitt Cancer CenterTampa 33612FLUSA

Ovarian cancer(OC) is the seventh most commonly diagnosed cancer among women in the world and the tenth most common in China. Epithelial OC is the most predominant pathologic subtype, with five major histotypes that differ in origination,pathogenesis, molecular alterations, risk factors, and prognosis. Genetic susceptibility is manifested by rare inherited mutations with high to moderate penetrance. Genome-wide association studies have additionally identified 29 common susceptibility alleles for OC, including 14 subtype-specific alleles. Several reproductive and hormonal factors may lower risk, including parity, oral contraceptive use, and lactation, while others such as older age at menopause and hormone replacement therapy confer increased risks. These associations differ by histotype, especially for mucinous OC, likely reflecting differences in etiology. Endometrioid and clear cell OC share a similar, unique pattern of associations with increased risks among women with endometriosis and decreased risks associated with tubal ligation. OC risks associated with other gynecological conditions and procedures, such as hysterectomy,pelvic inflammatory disease, and polycystic ovarian syndrome, are less clear. Other possible risk factors include environmental and lifestyle factors such as asbestos and talc powder exposures, and cigarette smoking. The epidemiology provides clues on etiology,primary prevention, early detection, and possibly even therapeutic strategies.

关键词： Ovarian cancer epidemiology risk factors histology reproductive history

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The　Influence　of　Changes　in　Vegetation　Type　on　the　Surface　Energy　Budget

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Advances in Atmospheric Sciences 1994年第2期11卷 139-161页

作者： Runhua Yang (1) J. Shukla (1) P. J. sellers (2) 1. Center for Ocean-Land-Atmosphere Studies 4041 Powder Mill Road 20705 Calverton MD USA 2. NASA / GSFC 923 20771 Greenbelt MD USA

The influence of changes in vegetation type on the surface energy budget was studied using the Simple Biosphere Model (SiB) of sellers et al. (1986). The modeled energy budget response to the conversion of forest to short vegetation or bare soil (deforestation) was investigated with SiB forced by three time--series of atmospheric boundary conditions collected at three different climatic sites: an Amazonian tropical forest, a U.S. Great Plains grassland, and a central Wales spruce forest. The results show that SiB can simulate realistic surface energy budgets and surface temperatures, and that deforestation may have a significant influellce on the local surface energy budget and surface weather. The influence is especially prominent at the Amazonian and U.S. Great Plains sites, and greater in summer than in other *** was found that atmospheric boundary conditions play a dominant role in determining the degree of changes in the surface fluxes and temperature induced by deforestation; the largest change in latent heat flux appeared at the Amazon site, the largest change in sensible heat flux appeared at the Spruce forest site, and the largest change in surface temperature appeared at the Great Plains site. The Bowen ratios of the SiB sensitivity integrations for each site are comparable with observations. The values of the Bowen ratio and the ratio of latent heat flux to net radiation vary distinctly from site to site, implying that local atmospheric conditions limit the range of changes caused by the vegetation change.

关键词： Biosphere model Vegetation effect Sensitivity test Land -atmosphere interaction

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Chinese City Size Ranking: A Comparative Study of the Urban Built-Up Area Based on Remote Sensing Data

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China City Planning Review 2019年第4期28卷 65-76页

作者： Huang Jingnan Xu Mengxiao Liu Yong Jefferey sellers Li Min(译) School of Urban Design of Wuhan University Guangzhou Urban Planning&Survey Design Institute Shanghai Branch School of Management Science and Real Estate Chongqing University College of Letters Arts and SciencesUniversity of Southern California 不详

Without a clear and unified definition of the urban built-up area, many city rankings by area are inconsistent, giving rise to confusion among the general public and even scholars. This paper summarizes various definitions of the urban built-up area and proposes three definition methods: all urban built-up areas in a municipal administrative area, concentrated contiguous built-up areas, and urban built-up areas in central cities. From the latest Landsat 8 satellite images, the paper obtains the data of urban built-up area in some of China’s big cities and makes a comparative study between the results of the urban built-up areas by the three definition methods and three other common statistical data. It finds that neither the area data nor the ranking is consistent. Finally, it further explores what causes differences in rankings and gives some advice for improving the definition of the urban built-up area.

关键词： city size ranking urban built-up area remoting sensing

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Associations between extracurricular activity participation and health-related variables in underrepresented children

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Sports Medicine and Health Science 2020年第2期2卷 102-108页

作者： Jeanette M.Ricci Kimberly A.Clevenger Sandra sellers Sharon Davenport Karin A.Pfeiffer Michigan State University 308 W Circle DrEast LansingMI48823USA Crim Fitness Foundation 452 S.Saginaw StSuite 1FlintMI48502USA

Background:Children from underrepresented populations exhibit low levels of physical activity(PA),diet quality,and health-related quality of life(QoL),but participation in extracurricular activities may positively impact these health ***:To examine differences in PA,dietary behavior,and QoL in underrepresented children by extracurricular activity dose(0,1,≥2)and type(sports,dance/martial arts,art/music).Methods:Children(N=754;Grades 4–6)completed the Physical Activity Questionnaire for Children,KidsScreen-27(QoL),and the School Physical Activity and Nutrition Survey and self-reported extracurricular activity ***-way MANOVA tests were used in this ***:Individuals participating in 1 and≥2 activities(p<0.001),sport/dance/martial arts(p<0.001),and art/music(p=0.029)had higher PA than *** participating in≥2 activities reported higher fruit intake compared to 1 activity and non-participants(p=0.009;p<0.001,respectively).Participants with≥2 activities reported higher parent-and peer-related QoL compared to non-participants(p=0.001;p=0.025,respectively).Conclusions:Extracurricular activity participation was positively associated with health behaviors in underrepresented *** may be encouraged to allocate some of their resources to extracurricular activity programing.

关键词： Physical activity Dietary behavior Quality of life Youth Sport participation

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Neuroplasticity in post-stroke gait recovery and noninvasive brain stimulation

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Neural Regeneration Research 2015年第12期10卷 2072-2080页

作者： Yi Xu Qing-hua Hou Shawn D.Russell Bradford C.Bennett Andrew J.sellers Qiang Lin Dong-feng Huang Department of Rehabilitation Medicine the First Affiliated Hospital of Sun Yat-sen University Guangdong Provincial Engineering Technology Research Center for Rehabilitation Medicine and Clinical Translation Motion Analysis and Motor Performance Laboratory Department of Orthopedics and Mechanical EngineeringUniversity of Virginia Department of Neurology Guangdong No.2 Provincial People’s Hospital H.C Sweere Center for Clinical Biomechanics and Applied Ergonomics Northwestern Health Science University Department of Radiology Naval Medical Center Portsmouth

Gait disorders drastically affect the quality of life of stroke survivors,making post-stroke rehabilitation an important research *** brain stimulation has potential in facilitating neuroplasticity and improving post-stroke gait ***,a large inter-individual variability in the response to noninvasive brain stimulation interventions has been increasingly *** first review the neurophysiology of human gait and post-stroke neuroplasticity for gait recovery,and then discuss how noninvasive brain stimulation techniques could be utilized to enhance gait *** post-stroke neuroplasticity for gait recovery is characterized by use-dependent plasticity,it evolves over time,is idiosyncratic,and may develop maladaptive ***,noninvasive brain stimulation has limited reach capability and is facilitative-only in ***,we recommend that noninvasive brain stimulation be used adjunctively with rehabilitation training and other concurrent neuroplasticity facilitation ***,when noninvasive brain stimulation is applied for the rehabilitation of gait impairment in stroke survivors,stimulation montages should be customized according to the specific types of neuroplasticity found in each *** could be done using multiple mapping techniques.

关键词： nerve regeneration stroke cerebrovascular disorders transcranial magnetic stimulation neuroplasticity transcranial direct current stimulation electrical stimulation therapy gait walking gait disorders rehabilitation neural regeneration

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基于城市流强度测度的内陆与沿海城市群比较研究--以武汉市城市群和长三角城市群为例

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现代城市研究 2017年第7期32卷 114-123页

作者：黄经南王存颂 Jefferey sellers 武汉大学城市设计学院城市规划系武汉市规划设计有限公司美国南加州大学文学艺术与科学学院

经济全球化以来,城市群逐渐成为区域发展的重要载体和空间集聚形态。但目前研究主要集中在改革开放较早的沿海三大城市群,如长三角、珠三角和京津塘等,对于内地的城市群则涉及较少。而两者间对比研究则更为缺乏。本文选取沿海与内地城... 详细信息

经济全球化以来,城市群逐渐成为区域发展的重要载体和空间集聚形态。但目前研究主要集中在改革开放较早的沿海三大城市群,如长三角、珠三角和京津塘等,对于内地的城市群则涉及较少。而两者间对比研究则更为缺乏。本文选取沿海与内地城市群的典型代表——长三角和武汉城市圈为研究对象,构建GIS城市流强度模型,从客运流、信息流两个方面对两大城市圈的发展程度进行计算对比。结果表明,与沿海长三角城市群相比,内地武汉城市圈城市流强度较小;在结构方面,沿海的长三角城市群城市体系已经发育成熟,形成了多级中心结构,而武汉城市群仍是单中心结构。据此,从空间规划角度提出旨在提高内地城市群质量的策略。

关键词：城市区域城市流长三角武汉城市圈

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性别和社会发展对中国大学生男性观念的影响

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心理科学 2001年第3期24卷 365-366页

作者：吴荣先 Ronald F.Levant Al sellers 苏州大学教育学院苏州215021 Nova Southeastern University

男性观念是“在两个性别之间的结构性关系的基础上．有关男子气和男性性别的内化了的文化信念体系”(Pleck，Sonenstein，& Ku，1993，P．88)。

关键词：男性性别性观念性关系影响男子个性文化信念内化中国大学生

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