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基于CycleGan的动车零件图像高光消除方法

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机械与电子 2024年第7期42卷 10-15页

作者：沈钧贤梅劲松王干陈苏扬南京航空航天大学自动化学院江苏南京211106 南京拓控信息科技股份有限公司江苏南京210004 南京地铁运营有限责任公司江苏南京210000

应用光学无接触方法检测动车零件损伤时,采集图像的照射光易在零件上造成镜面反射,使得采集图像上存在高光,不利于对损伤部位的辨识。提出一种基于循环对抗生成网络(CycleGan)和光照补偿算法结合的方法来修复动车轮部图像的高光部分。... 详细信息

应用光学无接触方法检测动车零件损伤时,采集图像的照射光易在零件上造成镜面反射,使得采集图像上存在高光,不利于对损伤部位的辨识。提出一种基于循环对抗生成网络(CycleGan)和光照补偿算法结合的方法来修复动车轮部图像的高光部分。首先通过生成手段初步修复高光区域,然后改进Retinex光照补偿算法,实现对生成图像的进一步增强,达到高光消除的目的。实验结果表明,所提方法大幅改善了高光区域的像素灰度,使得该部分像素灰度接近图像整体像素灰度,同时强化了暗部细节和图像信息,提高了损伤部分的辨识度。

关键词：高光消除图像处理光照补偿循环对抗生成网络

AB_(2)-type rare earth-based compounds with C-15 structure:Looking for reversible hydrogen storage materials

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Journal of Rare Earths 2024年第5期42卷 803-816,I0001页

作者： Hao shen junxian Zhang Valerie Paul-Boncour Ping Li Zhinian Li Yuanfang Wu Lijun Jiang National Engineering Research Center of Nonferrous Metals Materias and Products for New Energy GRINM Group Co.LtdBeijing00088China Univ Paris Est Creteil CNRSICMPEUMR 71822 rue Henri Dunant94320ThiaisFrance Institute for Advanced Materials and Technology University of Science and TechnologyBeijing100083China GRIMAT Engineering Institute Co. Ltd.Beijing101407China

AB_(2)-type(A=rare earth,B=transition metal)intermetallic compounds with C15 structure can easily absorb large amount of hydrogen,showing their potential use as hydrogen storage *** crucial problem hindering their application is hydrogen induced amorphization(HIA),which leads to the irreversible hydrogen sorption *** stability of the AB_2 Laves phase compounds,the structural properties,the hydrogenation properties and the controlling factors of HIA are discussed in this *** with other factors,the atomic radii ratio r_A/r_B is the most important one influencing the ***-element substitution is an efficient way to suppress or limit HIA and may enable AB_2 compounds to be suitable for hydrogen storage.

关键词： Rare earth-based AB_2-type compounds Hydrogenation properties Hydrogen induced amorphization Elemental substitution

Topography of acoustic response characteristics in the auditory cortex of the Kunming mouse

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Chinese Science Bulletin 2000年第5期45卷 443-448页

作者： junxian shen Zhimin Xu Yudong Yao Chinese Acad Sci Inst Biophys Beijing 100101 Peoples R China

Topography of acoustic response characteristics in the auditory cortex (AC) of the Kunming (KM) mouse has been examined by using microelectrode recording techniques. Based on best-frequency (BF) maps, both the primary auditory field (Al) and the anterior auditory field (AAF) are tonotopically organized with a counter running frequency gradient. within an isofrequency stripe, the width of the frequency-threshold curves of single neurons increases, and minimum threshold (MT) decreases towards more ventral locations. BFs in Al and AAF range from 4 to 38 kHz. Auditory neurons with BFs above 40 kHz are located at the rostrodorsal part of the AC. The findings suggest that the KM mouse is a good model suitable for auditory research.

关键词： mouse auditory cortex topography of acoustic response characteristics frequency-threshold curve.

FREQUENCY SELECTIVITY OF PRIMARY AUDITORY NEURONS IN THE BUSHCRICKET GAMPSOCIEIS GRATIOSA

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Chinese Journal of Acoustics 1989年第1期8卷 80-85页

作者： shen junxian(Institute of Biophysics, Academia Sinica, Beijing) Acad Sinica China

Sound is one of the information carriers often used in animal communication. Sound produced by animals is useful not only in intraspecific communication,but also in alarm or *** basic problems in hearing should be resolved i. e. frequency selectivity, pattern recognition and sound direction. With intracellular recording and single cell staining techniques, frequency selectivity of primary auditory neurons in the bushcricket has been studied. Each neuron has its characteristic best frequency (BF) and tuning curve in response to sound. The central projections of their axons in the prothoracic ganglion are unikteral, non - transsegmental and of some corresponding relation to their BFs. Neural mechanisms for frequency analysis in species - specific song recognition of the bushcricket are discussed.

关键词： FREQUENCY SELECTIVITY OF PRIMARY AUDITORY NEURONS IN THE BUSHCRICKET GAMPSOCIEIS GRATIOSA kHz

Directional sensitivity of auditory ascending neuron in the bushcricket Gampsocleis gratiosa

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Chinese Journal of Acoustics 1990年第2期9卷 170-176页

作者： shen junxian(Institute of Biophysics, Academia Sinica, Beijing))

Quantitative analyses on phonotactic behavior of the bushcricket have demonstrated that the bushcricket possesses good capability to determine direction of sound source. The morphological structure, laterality and directional sensitivity of the auditory ascending neuron in the prothoracic ganglion of the bushcricket have been studied. At its best frequency of 15 kHz, the laterality threshold difference of the neuron is great up to about 16 dB. Its directional sensitivity depends closely on stimulus frequency. The higher the stimulus frequency, the greater the directional threshold differences. Spike count and latency shift of the ascending neuron in response to each stimulus depend on the angle of incidence of sound. Therefore, the two parameters can be used as directional cues of sound source by the ascending neuron.

关键词： Directional sensitivity of auditory ascending neuron in the bushcricket Gampsocleis gratiosa

AN ELECTROPHYSIOLOGICAL STUDY ON HEARING OF THE CICADA CRYPTOTYMPANA ATRATA FABRICIUS (HOMOPTERA: CICADIDAE)

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Chinese Journal of Acoustics 1988年第2期7卷 164-170页

作者：沈钧贤 Acad Sinica China

The characteristics in response to sound and directional sensitivity of the auditory primary neurons andinterneurons of the cicada Cryptotympna atrata were studied with neurophysiological *** are tuned to a similar characteristic frequency,which is in correspondence with the dominantfrequency of calling song of the *** are able to code sound intensity within the dynamic range of 4OdB above thresholds with an increment of about two spikes per 10 *** auditory neurons possess gooddirectiond sensitivity with the threshold difference of 10—12 dB at the best frequency between contra-andipsilateral stimulations.

关键词： HOMOPTERA AN ELECTROPHYSIOLOGICAL STUDY ON HEARING OF THE CICADA CRYPTOTYMPANA ATRATA FABRICIUS

New progress on acoustic communication in the concave-eared torrent frog and its revelation

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Science Foundation in China 2007年第1期15卷 49-50页

作者： shen junxian State Key Laboratory of Brain and Cognitive Science Institute of Biophysics Chinese Academy of Sciences Beijing 100101

Animals have special solution to the problem of communication in high levels of background noise. A small group of vertebrates (bats,dolphins and whales,and some rodents) that use ultrasound for *** research first demonstrated that the concave-eared torrent frog is the first non- mammalian vertebrate found to be capable of pro- ducing and detecting ultrasounds for communica- *** study may provide a clue for understand- ing why humans have ear canals and how animals auditory systems have evolved,and inspire in de- veloping bionic tecnology for improving hearing in noise.

关键词：青蛙耳朵声音信息超声波地面噪音

SONG PRODUCTION AND HEARING IN THE BUSHCRICKET DERACANTHA ONOS (ORTHOPTERA, TETTIGONIIDAE)

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Chinese Journal of Acoustics 1988年第1期7卷 83-89页

作者：沈钧贤关力 Inst of Biophysics China

The basic features of song pattern,stridulatory mechanism and auditory sensitivity in thebushcricket species Deracantha onos were studied with sond analysis and *** bushcricket uses an elytro-elytral mechanism of sound production:a denticulatedvein(file)on the under-surface of the left elytron is rubbed by the inside edge(plectrum)of the rightelytron at the rate of 30—33/*** a few teeth does not influence the rhythm of the motorneurons innervating the *** file-train of pulses is the element of calling song of ***-train of pulses is composed of one elytra-opening pulse and 11 to 13 elytra-closing tooth *** tooth impact of the file at the plectrum elicts a damped oscillation called'tooth pulse'.The rateof tooth pulses is about 450/*** frequency spectrum of the song covers a wide frequency bandmainly between 6 and 30 kHz with a predominant peak at 12 to 14 *** intensity is about 110 dBat 10cm from the *** best sensitivity of heari

关键词： SONG PRODUCTION AND HEARING IN THE BUSHCRICKET DERACANTHA ONOS ORTHOPTERA,TETTIGONIIDAE

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未来自我连续性问卷中文版在大学生的试测

中国心理卫生杂志 2022年第1期36卷 73-76页

作者：申俊贤王煜周春燕中国地质大学心理科学与健康研究中心武汉430074

目的:检验未来自我连续性问卷(FSCQ)测评大学生的效度和信度。方法:在武汉市某高校进行取样,选取561名大学生进行条目分析、探索性因子分析、效标效度分析;选取294名大学生进行验证性因子分析;选取73名大学生进行间隔2周的重测。采用未... 详细信息

目的:检验未来自我连续性问卷(FSCQ)测评大学生的效度和信度。方法:在武汉市某高校进行取样,选取561名大学生进行条目分析、探索性因子分析、效标效度分析;选取294名大学生进行验证性因子分析;选取73名大学生进行间隔2周的重测。采用未来自我连续性量表(FSCS)、未来结果考虑量表(CFCS)为效标工具。结果:各条目得分与总分的相关在0.42~0.62之间(均P<0.01);探索性因子分析结果显示,FSCQ为三因子结构,三因子共累计方差贡献率为66.09%;验证性因子分析结果显示,模型拟合良好(χ^(2)/df=2.064,CFI=0.964,TLI=0.950,RMSEA=0.060,IFI=0.965);FSCQ总分与FSCS、CFCS得分均呈正相关(r=0.31、0.73,均P<0.01)。FSCQ总量表及相似性、生动性、积极性3个因子的Cronbachα系数分别为0.78、0.80、0.71和0.84,重测信度分别为0.80、0.75、0.69和0.76。结论:提示未来自我连续性问卷中文版测评大学生具有良好的效度和信度。

关键词：未来自我连续性问卷效度信度大学生