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IR-YOLO: Real-Time Infrared Vehicle and Pedestrian Detection

Computers, Materials & Continua 2024年第2期78卷 2667-2687页

作者： xiao luo Hao Zhu Zhenli Zhang Department of Electrical Engineering and Automation Jiangxi University of Science and TechnologyGanzhou341000China Jiangxi Provincial Key Laboratory of Maglev Technology Ganzhou341000China Graduate School of Information Production and SystemsWaseda UniversityKitakyushu-shiFukuoka808-0135Japan

Road traffic safety can decrease when drivers drive in a low-visibility *** application of visual perception technology to detect vehicles and pedestrians in infrared images proves to be an effective means of reducing the risk of *** tackle the challenges posed by the low recognition accuracy and the substan-tial computational burden associated with current infrared pedestrian-vehicle detection methods,an infrared pedestrian-vehicle detection method A proposal is presented,based on an enhanced version of You Only Look Once version 5(YOLOv5).First,A head specifically designed for detecting small targets has been integrated into the model to make full use of shallow feature information to enhance the accuracy in detecting small ***,the Focal Generalized Intersection over Union(GIoU)is employed as an alternative to the original loss function to address issues related to target overlap and category ***,the distribution shift convolution optimization feature extraction operator is used to alleviate the computational burden of the model without significantly compromising detection *** test results of the improved algorithm show that its average accuracy(mAP)reaches 90.1%.Specifically,the Giga Floating Point Operations Per second(GFLOPs)of the improved algorithm is only *** contrast,the improved algorithms outperformed the other algorithms on similar GFLOPs,such as YOLOv6n(11.9),YOLOv8n(8.7),YOLOv7t(13.2)and YOLOv5s(16.0).The mAPs that are 4.4%,3%,3.5%,and 1.7%greater than those of these algorithms show that the improved algorithm achieves higher accuracy in target detection tasks under similar computational resource *** the other hand,compared with other algorithms such as YOLOv8l(91.1%),YOLOv6l(89.5%),YOLOv7(90.8%),and YOLOv3(90.1%),the improved algorithm needs only 5.5%,2.3%,8.6%,and 2.3%,respectively,of the *** improved algorithm has shown significant advancements in balancing accuracy and computati

关键词： Traffic safety infrared image pedestrians and vehicles focal GIoU distributed shift convolution

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Research on internal gravity waves in the Martian atmosphere based on Tianwen-1 and Mars Global Surveyor occultation data

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Earth and Planetary Physics 2024年第6期8卷 890-898页

作者： luo xiao CunYing xiao Xiong Hu ZeWei Wang xiaoQi Wu Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China School of Physics and Astronomy Beijing Normal UniversityBeijing 100875China State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100045China Key Laboratory of Science and Technology on Environmental Space Situation Awareness National Space Science CenterChinese Academy of SciencesBeijing 100190China

Internal gravity waves(IGWs)are critical in driving Martian atmospheric motion and *** study investigates Martian IGWs by using high-resolution data from China’s Tianwen-1 mission and the National Aeronautics and Space Administration’s Mars Global Surveyor(MGS)by the radio occultation(RO)*** IGW parameters,such as vertical and horizontal wavelengths,intrinsic frequency,and energy density,are extracted based on vertical temperature profiles from the Martian surface to~50 km *** reveal that the Martian IGWs are predominantly small-scale waves,with vertical wavelengths between 6 and 13 km and horizontal wavelengths extending to thousands of *** waves propagate almost vertically and exhibit low intrinsic frequencies close to the inertial frequency,with the characteristic of low-frequency inertial ***-1 data indicate stronger IGW activity,higher energy density,and less dissipation than MGS data in the northern ***,MGS data in the southern hemisphere show higher buoyancy frequencies and lower vertical wavelengths,suggesting more stable atmospheric conditions conducive to IGW *** extracted IGW characteristics can enhance our understanding of the atmospheric dynamics on Mars and contribute valuable information for parameterization in global circulation models.

关键词： internal gravity waves Mars Tianwen-1 Mars Global Surveyor radio occultation

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Fuzzy interval linguistic sets with applications in multi-attribute group decision making

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Journal of Systems Engineering and Electronics 2018年第6期29卷 1237-1250页

作者： luo xiao LI Weimin WANG Xuanzi ZHAO Zhenchong Air and Missile Defense College Air Force Engineering University School of Management Xi'an Jiaotong University

Uncertain and hesitant information, widely existing in the real-world qualitative decision making problems, brings great challenges to decision makers. Hesitant fuzzy linguistic term sets(HFLTSs), an effective linguistic computational tool in modeling and eliciting such information, have hence aroused many scholars’ interests and some extensions have been introduced ***, these methods are based on the discrete linguistic term framework with the limited expression domain, which actually depict qualitative information using several single values. Therefore,it is hard to ensure the integrity of the semantics representation and the accuracy of the computation results. To deal with this problem, a semantics basis framework called complete linguistic term set(CLTS) is designed, which adopts a separation structure of linguistic scale and expression domain, enriching semantics representation of decision makers. On this basis the concept of fuzzy interval linguistic sets(FILSs) is put forward that employs the interval linguistic term with probability to increase the flexibility of eliciting and representing uncertain and hesitant qualitative information. For practical applications, a fuzzy interval linguistic technique for order preference by similarity to ideal solution(FILTOPSIS) method is developed to deal with multi-attribute group decision making(MAGDM) problems. Through the cases of movie and enterprise resource planning(ERP) system selection, the effectiveness and validity of the proposed method are illustrated.

关键词： hesitant fuzzy sets multi-attribute group decision making(MAGDM) fuzzy interval linguistic set(FILS) hesitant fuzzy linguistic term set(HFLTS) fuzzy linguistic approach

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A NEW APPROACH OF AVAILABLE TRANSFER CAPABILITY INCORPORATING WIND GENERATION

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Journal of Systems Science & Complexity 2010年第5期23卷 989-998页

作者： xiaojiao TONG Chunping LIU xiao luo Renjun ZHOU Department of Mathematics and Computing Science Hengyang Normal University Hengyang 421002 China Hebei Extra High Voltage Branch Shijiazhuang 050070 China Department of Electrical Engineering The Hong Kong Polytechnic University Kowloon Hong Kong China School of Electrical and Information Engineering Changsha University of Science and Technology Changsha 410014 China

The approach of available transfer capability （denoted as ATC） incorporating wind generation has been paid very high attention since the development of wind generation. Based on the maximum function, this paper presents an ATC model. The characteristic of the new model is twofold. First, it considers wind turbines connected to power system and static security of power system simultaneously. Second, it is a system of semismooth equations and can be solved easily. By using the smoothing strategy, a smoothing Newton method is adopted for solving the proposed new ATC model. Numerical simulation results of the IEEE 30-bus and 118-bus system show that the new model and algorithm are feasible and effective. The impact of wind turbines connected to power system on ATC is also analyzed.

关键词： Available transfer capability (ATC) smoothing newton method static security wind generation.

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终聚釜刮板冷凝器密封系统改造

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合成纤维 2025年第1期54卷 38-39,46页

作者：刘晓宏罗晓骏杨国显苏州盛虹纤维有限公司江苏吴江215228 江苏国望高科纤维有限公司江苏吴江215221

针对聚酯聚合装置中刮板冷凝器出现的轴封泄漏事故进行原因分析,通过刮板冷凝器的运行状况及人员操作流程的优化改进来解决聚合缩聚反应过程中产生的丝状物缠绕在刮板冷凝器刮板上面的问题。解决刮板缠丝的问题后有效避免了传动轴弯曲... 详细信息

针对聚酯聚合装置中刮板冷凝器出现的轴封泄漏事故进行原因分析,通过刮板冷凝器的运行状况及人员操作流程的优化改进来解决聚合缩聚反应过程中产生的丝状物缠绕在刮板冷凝器刮板上面的问题。解决刮板缠丝的问题后有效避免了传动轴弯曲导致轴封泄漏问题,终聚釜刮板冷凝器密封系统的稳定运行才能保障聚合反应过程中真空系统的稳定性及聚酯熔体黏度值,同时避免刮板冷凝器轴封泄漏造成环境污染及能源浪费。

关键词：聚酯刮板冷凝器密封隔离运行优化

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Coherence Resonance and Noise-Induced Synchronization in Hindmarsh-Rose Neural Network with Different Topologies

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Communications in Theoretical Physics 2007年第4X期48卷 759-762页

作者： WEI Du-Qu luo xiao-Shu College of Physics and Electronic Engineering Guangxi Normal University Guilin 541004 China

In this paper, we investigate coherence resonance （CR） and noise-induced synchronization in Hindmarsh- Rose （HR） neural network with three different types of topologies： regular, random, and small-world. It is found that the additive noise can induce CR in HR neural network with different topologies and its coherence is optimized by a proper noise level. It is also found that as coupling strength increases the plateau in the measure of coherence curve becomes broadened and the effects of network topology is more pronounced simultaneously. Moreover, we find that increasing the probability p of the network topology leads to an enhancement of noise-induced synchronization in HR neurons network.

关键词： coherence resonance small-world network synchronization Hindmarsh-Rose neural

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Effects of adverse pressure gradient on Reynolds stresses inturbulent boundary layers

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航空动力学报 2017年第2期32卷 463-469页

作者： luo xiao-tian ZHANG Ce MA Wei TENG Jin-fang School of Aeronautics and Astronautics Shanghai Jiao Tong University

The effects of adverse pressure gradient(APG)on Reynolds stresses in turbulent boundary layers(TBLs)with APG were *** difficulty of this work was attributable to the Reynolds stresses in TBLs with APG under two combined effects,i.e.:effect of upstream flow and effect of *** effect of upstream flow is an inherent effect no matter pressure gradient exists or *** individual effect was analyzed from absolute developments of Reynolds stresses in TBLs with zero pressure gradient(ZPG)*** of APG was then analyzed from absolute developments of Reynolds stresses in TBLs with *** showed that,for absolute development of mean streamwise Reynolds stresses,APG accelerated its development in TBL with ZPG;for absolute development of mean normal or shear Reynolds stresses,APG increased their magnitude in the outer part,and decreased their extent of large value region.

关键词： turbulent boundary layer adverse pressure gradient zero pressure gradient Reynolds stresses flat plate

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Reveal crucial subtype of natural chondroitin sulfate on the functionalized coatings for cardiovascular implants

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Journal of Materials Science & Technology 2021年第32期91卷 67-77页

作者： Dan Zou Jingan Li Fang Kou xiao luo Ping Yang Key Lab.for Advanced Technologies of Materials Ministry of EducationSchool of Material Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China School of Materials Science and Engineering&Henan Key Laboratory of Advanced Magnesium Alloy&Key Laboratory of Materials Processing and Mold Technology(Ministry of Education) Zhengzhou UniversityZhengzhou 450001China

Surface functionalization is generally accepted as one of the most useful methods for endowing better biocompatibility of the cardiovascular implants. Chondroitin sulfate(CS) is a commercial drug applied for preventing cardiovascular diseases in clinics, suggesting a potential application for functionalized coatings. Our previous work demonstrated that the CS conjugated onto the poly-dopamine(PDA)/hexanediamine(HD) co-deposited 316 L stainless steel(316 L SS) could endow the surface stronger multi-functions for cardiovascular implants. However, the natural CS has two subtypes, CS A and CS C,while it is still unclear which subtype makes more contribution to the surface modification of cardiovascular implants. Thus, the present study focus on comparing CS A and CS C via preparing functionalized coatings on the cardiovascular implants. Our data suggested PDA/HD-CS C coating possessed better blood compatibility and pro-endothelialization function through controlling the phenotype and distribution of macrophages, smooth muscle cells and endothelial cells in time sequence and space sequence.

关键词： Cardiovascular implant Surface functionalization Chondroitin sulfate A Chondroitin sulfate C

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Quantitative Analysis of Seeing with Height and Time at Muztagh-Ata Site Based on ERA5 Database

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Research in Astronomy and Astrophysics 2024年第1期24卷 87-95页

作者： xiao-Qi Wu Cun-Ying xiao Ali Esamdin Jing Xu Ze-Wei Wang luo xiao Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China Department of Astronomy Beijing Normal UniversityBeijing 100875China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China

Seeing is an important index to evaluate the quality of an astronomical *** estimate seeing at the Muztagh-Ata site with height and time quantitatively,the European Centre for Medium-Range Weather Forecasts reanalysis database(ERA5)is *** calculated from ERA5 is compared consistently with the Differential Image Motion Monitor seeing at the height of 12 *** show that seeing decays exponentially with height at the Muztagh-Ata *** decays the fastest in fall in 2021 and most slowly with height in *** seeing condition is better in fall than in *** median value of seeing at 12 m is 0.89 arcsec,the maximum value is1.21 arcsec in August and the minimum is 0.66 arcsec in *** median value of seeing at 12 m is 0.72arcsec in the nighttime and 1.08 arcsec in the *** is a combination of annual and about biannual variations with the same phase as temperature and wind speed indicating that seeing variation with time is influenced by temperature and wind *** Richardson number Ri is used to analyze the atmospheric stability and the variations of seeing are consistent with Ri between *** quantitative results can provide an important reference for a telescopic observation strategy.

关键词： site testing atmospheric effects methods:data analysis telescopes Earth

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Fluctuations of Single-Mode Laser Driven by Two Different Kinds of Colored Noise

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Communications in Theoretical Physics 2006年第4期45卷 630-636页

作者： WU Dan luo xiao-Qin ZHU Shi-Qun School of Physical Science and Technology Suzhou University Suzhou 215006 China

A single-mode laser with coupling between additive and multiplicative noise terms is investigated when the multiplicative noise and the coupling between two noise terms are colored fluctuations with finite correlation times T1 and T2. Combining the unified colored noise approximation （UCNA） and the functional analysis, the stationary probability distribution （SPD） and the variance of the laser intensity is derived. It is found that the colored nature of multiplicative noise and the coupling strength between two noise terms can affect both the structure and the height of the SPD, while the colored nature of the coupling between two noise terms can only affect the height of the SPD. The multiplicative noise can enhance the intensity fluctuations while the additive noise can reduce the fluctuations in a laser system. Numerical simulations are presented and consistent to the analytical results.

关键词： single-mode laser colored noise fluctuation coupling variance

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