检索结果-南通市图书馆

Individual Dairy Cattle Recognition Based on Deep Convolutional Neural Network

在线全文

学校读者我要写书评

暂无评论

Journal of Donghua University(English Edition) 2018年第2期35卷 107-112页

作者： ZHANG Mandun shan xinyuan YU Jinsu GUO Yingchun LI Ruiwen XU Mingquan School of Computer Science and Engineering Hebei University of Technology Tianjin 300401 China Hebei Province Key Laboratory of Big Data Calculation Tianfin 300401 China Traditional Chinese Veterinary Medicine College Agricultural University of Hebei Baoding 071000 China

Image based individual dairy cattle recognition has gained much attention recently. In order to further improve the accuracy of individual dairy cattle recognition, an algorithm based on deep convolutional neural network( DCNN) is proposed in this paper,which enables automatic feature extraction and classification that outperforms traditional hand craft features. Through making multigroup comparison experiments including different network layers,different sizes of convolution kernel and different feature dimensions in full connection layer,we demonstrate that the proposed method is suitable for dairy cattle classification. The experimental results show that the accuracy is significantly higher compared to two traditional image processing algorithms: scale invariant feature transform( SIFT) algorithm and bag of feature( BOF) model.

关键词： deep learning deep convolutional neural network(DCNN) dairy cattle individual recognition

在线全文

学校读者我要写书评

暂无评论

论看守所检察改革的经验与塑造

重庆理工大学学报（社会科学） 2021年第4期35卷 162-174页

作者：朱德安单新源高樱芙天津商业大学法律事务室天津300134 天津市西青区人民检察院天津300380

监狱巡回检察改革实际上构建了“派驻+巡回”的检察模式,这一结合检察模式并非“派驻”和“巡回”两种检察模式的机械嫁接,而是彼此相互融合优化,积累了实践的和体制机制的经验。看守所作为监管场所之一,在明晰其与监狱在监管对象、法... 详细信息

监狱巡回检察改革实际上构建了“派驻+巡回”的检察模式,这一结合检察模式并非“派驻”和“巡回”两种检察模式的机械嫁接,而是彼此相互融合优化,积累了实践的和体制机制的经验。看守所作为监管场所之一,在明晰其与监狱在监管对象、法定职能、检察监督内容、机构设置等方面存有差异的基础上,发掘其仍具备进行检察改革的法律基础和现实需要。顺应建立统一的刑罚执行体系之趋势,看守所检察模式构建应考虑将重心放在对未决羁押职能检察上,保留派驻检察以应对人员流动较大、羁押必要性检察、重大案件讯问合法性检察以及其他时效性、全程性工作开展的需要;变补充巡回检察为常态化巡回检察,用以消解驻所检察人员被同化等问题。从检察方式、检察组建立、检察工作内容、检察结果与救济等方面设计看守所检察思路,形成区别于监狱并保障诉讼权利的检察规则。

关键词：看守所检察改革未决羁押派驻检察巡回检察

基于Kinect与网格几何变形的人脸表情动画

在线全文

学校读者我要写书评

暂无评论

计算机工程与应用 2017年第14期53卷 172-177页

作者：张满囤霍江雷单新媛王小芳吴鸿韬河北工业大学计算机科学与软件学院天津300401 河北省大数据计算重点实验室天津300401

面部表情重建的实时性与重建效果的真实性是人脸表情动画的关键问题,提出一种基于Kinect人脸追踪和几何变形技术的面部表情快速重建新方法。使用微软的Kinect设备识别出表演者面部并记录其特征点数据,并利用捕捉到的特征点建立覆盖人脸... 详细信息

面部表情重建的实时性与重建效果的真实性是人脸表情动画的关键问题,提出一种基于Kinect人脸追踪和几何变形技术的面部表情快速重建新方法。使用微软的Kinect设备识别出表演者面部并记录其特征点数据,并利用捕捉到的特征点建立覆盖人脸的网格模型,从中选取变形使用的控制点数据,由于Kinect可以实时地自动追踪表演者面部,由此实现了利用三种不同变形算法对目标模型实时快速重建。实验结果表明,该方法简单易实施,不用在表演者面部做任何标定,可以自动地将人脸表情动作迁移到目标模型上,实现人脸表情快速重建,并且保证目标模型表情真实自然。

关键词：人脸表情动画面部表情重建网格模型几何变形 Kinect

在线全文

学校读者我要写书评

暂无评论

左心室心肌致密化不全突变基因的研究进展

国际儿科学杂志 2017年第1期44卷 28-31页

作者：单丽沈康鑫源于宪一中国医科大学附属盛京医院儿科沈阳110004 中国医科大学沈阳110000

左心室心肌致密化不全（1eft ventricular noncompaction，LVNC）是由于胚胎初期心内膜及心肌细胞发育停止而引起的一种相对罕见心肌病，因该病主要累及左心室而得名。LVNC是散发性或家族性遗传疾病，具有明显的遗传异质性，它以X连锁... 详细信息

左心室心肌致密化不全（1eft ventricular noncompaction，LVNC）是由于胚胎初期心内膜及心肌细胞发育停止而引起的一种相对罕见心肌病，因该病主要累及左心室而得名。LVNC是散发性或家族性遗传疾病，具有明显的遗传异质性，它以X连锁及常染色体显性遗传。LVNC的遗传学特点为非单一性遗传，其致病基因及突变位点表现多样。现已经证明LVNC与多个基因突变密切相关，且与诱发其他心肌病的基因发生基因重叠。该文将对LVNC相关突变基因的研究进展作一综述。

关键词：左心室心肌致密化不全基因突变遗传异质性

WATER HAMMER ANALYSIS OF WATER FEEDING SYSTEM IN COAL FIRED POWER STATION AND ITS INFLUENCE ON THE SAFETY OF OPERATION

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 1997年第3期9卷 87-91页

作者： Sun, Fengzhong shan, Bo Li, Shuying Huang, xinyuan shandong Univ Jinan China

In the coal fired power station, the regulation of the load or the sudden stop operation of the unit in accident may result in water hammer, which would have critical influence on the safety operation of the unit. In this paper the analysis of water dynamic characters and the calculation of the pressure increment were shown, when the water hammer was produced in the system.

关键词： Accident prevention Flow of water Numerical analysis Power plants Pressure effects Water supply systems

Vertical matrix perovskite X-ray detector for effective multi-energy discrimination

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2022年第5期11卷 935-944页

作者： Jincong Pang shan Zhao xinyuan Du Haodi Wu Guangda Niu Jiang Tang Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information Huazhong University of Science and Technology430074 WuhanChina Optical Valley Laboratory 430074 WuhanChina

Multi-energy X-ray detection is sought after for a wide range of applications including medical imaging,security checking and industrial flaw *** X-ray detectors are superior in terms of high sensitivity and low detection limit,which lays a foundation for multi-energy ***,the extended capability of the perovskite detector for multi-energy X-ray detection is challenging and has never been *** we report the design of vertical matrix perovskite X-ray detectors for multi-energy detection,based on the attenuation behavior of X-ray within the detector and machine learning *** platform is independent of the complex X-ray source components that constrain the energy discrimination *** show that the incident X-ray spectra could be accurately reconstructed from the conversion matrix and measured photocurrent ***,the detector could produce a set of images containing the density-graded information under single exposure,and locate the concealed position for all low-,medium-and high-density *** findings suggest a new generation of X-ray detectors with features of multi-energy discrimination,density differentiation,and contrast-enhanced imaging.

关键词： energy matrix discrimination

X射线机不同滤过材料吸收剂量率与管电压的关系

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

长春中医药大学学报 2023年第7期39卷 746-749页

作者：王韶付宏斌刘扬张海英单新员刘纯岩吉林大学公共卫生学院放射医学实验教学中心长春130000 吉林大学公共卫生学院放射卫生教研室长春130000 吉林大学第二医院放射线科长春130000

目的对新安装X射线机不同滤过材料吸收剂量率与管电压进行测量分析,为本X射线机的教学及科研应用提供详实的技术依据。方法设置X射线机照射条件,通过瑞典Raysafe X1型X射线质量检测仪测量管电压、透射剂量率,对检测数据进行处理、分析,... 详细信息

目的对新安装X射线机不同滤过材料吸收剂量率与管电压进行测量分析,为本X射线机的教学及科研应用提供详实的技术依据。方法设置X射线机照射条件,通过瑞典Raysafe X1型X射线质量检测仪测量管电压、透射剂量率,对检测数据进行处理、分析,进而研究吸收剂量率与管电压之间的相互关系。结果透射剂量率随管电压增大而增大,滤过材料对透射剂量率与管电压关系有一定的影响。结论透射剂量率随管电压增大而增大;滤过材料厚度越大,吸收剂量率受管电压kV影响越小。

关键词： X射线机参数管电压管电流滤过材料

Design and implementation of instruction-driven and data-driven self-reconfigurable cell array

在线全文

学校读者我要写书评

暂无评论

High Technology Letters 2023年第1期29卷 31-40页

作者：山蕊 XIA xinyuan YANG Kun CUI Xinyue LIAO Wang GAO Xu School of Electronic Engineering Xi’an University of Posts and TelecommunicationsXi’an 710121P.R.China School of Safety Science and Engineering Xi’an University of Science and TechnologyXi’an 710054P.R.China

The reconfigurable chip,which integrates the advantages of high performance,high flexibility,high parallelism,low power consumption,and low cost,has achieved rapid development and wide ***,the control part and the computing part of algorithm is accelerated based on different reconfigurable architectures,but it is difficult to obtain overall performance *** improving efficiency of reconfigurable structure both for the control part and the computing part,a hybrid of instruction-driven and data-driven self-reconfigurable cell array is *** instruction-driven mode,processing element(PE)works like a reduced instruction set computer(RSIC)machine,which is mainly for the control part of *** data-driven mode,data is calculated by flowing between the preconfigured PEs,which is mainly for the computing of *** verifying the efficiency of architecture,some high-efficiency video coding(HEVC)video compression algorithms are implemented on the proposed *** proposed architecture has been implemented on Xilinx FPGA Virtex UltraScale VU440 develop *** same circuitry is able to run at75 *** with the architecture that only supports instruction-driven,the proposed architecture has better calculation efficiency.

关键词： cell array configurable computing data-driven instruction-driven

Spatiotemporal Changes in NDVI and Its Driving Factors in the Kherlen River Basin

在线全文

学校读者我要写书评

暂无评论

Chinese Geographical Science 2023年第2期33卷 377-392页

作者： MUHAMMAD Naveed HE Hongshi ZONG Shengwei DU Haibo SATTI Zulqarnain TAN xinyuan QAZI Muhammad Yasir Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains Ministry of EducationSchool of Geographical SciencesNortheast Normal UniversityChangchun 130024China School of Natural Resources University of MissouriColumbia 65211USA Xinjiang Institute of Ecology and Geography Chinese Academy of SciencesUrumqi 830011China

Vegetation is an important factor linking the atmosphere,water,soil,and biological functions,and it plays a specific role in the climate change response and sustainable development of regional ***,little information is available on vegetation vulnerability and its driving ***,studying temporal and spatial change characteristics of vegetation and their corresponding mechanisms is important for assessing ecosystem stability and formulating ecological policies in the Kherlen River *** used Moderate-resolution Imaging Spectroradiometer(MODIS)normalized difference vegetation index(NDVI)remote sensing images from 2000 to 2020 to analyse temporal changes in NDVI with the autoregressive moving average model(ARMA)and the breaks for additive season trend(BFAST)in the basin and to assess natural,anthropogenic and topographic factors with the Geodetector *** results show that:1)the long NDVI time series remained stable in the Kherlen River Basin from 2000 to 2020,with a certain significant mutation period from 2013 to 2017;2)the coefficient of variation(CV)in the analysis of the spatial NDVI was generally constant,mainly at the level of 0.01–0.07,and the spatial NDVI change was minimally impacted by external interference;and 3)temperature and precipitation are the key factors affecting the NDVI in the basin,and changes in local hydrothermal conditions directly affect the local *** results of this study could provide a scientific basis for the effective protection of the ecological environment and will aid in understanding the influence of vegetation change mechanisms and the corresponding factors.

关键词： normalized difference vegetation index(NDVI) spatial stability vegetation ecology Geodetector Kherlen River Basin