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| 1 | Analysis of sea surface temperature fronts in the Taiwan Strait and its adjacent area using an advanced edge detection method显示文摘A morphology-based edge detection method has been used to study sea surface temperature (SST) fronts in the Taiwan Strait and its adjacent area. The method is based on mathematical morphology with multi-dimensional and multi-structural elements. Using six years’ SST data from September 2002 to August 2008, we distinguished the large SST front like Kuroshio Front as well as the smaller ones: namely Taiwan Bank Front, Zhe-Min Coastal Front and Zhang-Yun Ridge Front. The seasonal and monthly variations of these fronts were also studied. Generally, the SST fronts are stronger in winter but weaker in summer. And the fronts are at their active stage during the period from January to May but at their declining stage during the period from July to October. | PI QingLing1,2,3 & HU JianYu1,2 1 State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China 2 Department of Oceanography, Xiamen University, Xiamen 361005, China 3 China Communications Construction Company First Harbor Consultants CO., LTD., Tianjin 300222, China | 2010 | Science China Earth Sciences2010，53，7： | 29 |
| 2 | A new algorithm of edge detection for color image: Generalized fuzzy operator显示文摘The definition of the generalized fuzzy set is presented for the first time, and a generalized fuzzy operator is proposed to transform a generalized fuzzy set into a normal fuzzy set. The algorithm theory of the operator, as the newest method of the edge detection of a 2-D image, is successfully established. Many experiments haw proved that the algorithm is simpler, more rapid and more precise in location than other edge detection methods. And a schedule of the concrete performance has been given additionally about the edge detection of color images. | 陈武凡 鲁贤庆 陈建军 吴国雄 | 1995 | Science China Mathematics1995，38，10： | 28 |
| 3 | Deep reinforcement learning-based joint task offloading and bandwidth allocation for multi-user mobile edge computing显示文摘The rapid growth of mobile internet services has yielded a variety of computation-intensive applications such as virtual/augmented reality. Mobile Edge Computing (MEC), which enables mobile terminals to offload computation tasks to servers located at the edge of the cellular networks, has been considered as an efficient approach to relieve the heavy computational burdens and realize an efficient computation offloading. Driven by the consequent requirement for proper resource allocations for computation offloading via MEC, in this paper, we propose a Deep-Q Network (DQN) based task offloading and resource allocation algorithm for the MEC. Specifically, we consider a MEC system in which every mobile terminal has multiple tasks offloaded to the edge server and design a joint task offloading decision and bandwidth allocation optimization to minimize the overall offloading cost in terms of energy cost, computation cost, and delay cost. Although the proposed optimization problem is a mixed integer nonlinear programming in nature, we exploit an emerging DQN technique to solve it. Extensive numerical results show that our proposed DQN-based approach can achieve the near-optimal performance。 | Liang Huang Xu Feng Cheng Zhang Liping Qian Yuan Wu | 2019 | Digital Communications and Networks2019，5，1： | 25 |
| 4 | Design Theory of Full Face Rock Tunnel Boring Machine Transition Cutter Edge Angle and Its Application显示文摘At present, the inner cutters of a full face rock tunnel boring machine (TBM) and transition cutter edge angles are designed on the basis of indentation test or linear grooving test. The inner and outer edge angles of disc cutters are characterized as symmetric to each other with respect to the cutter edge plane. This design has some practical defects, such as severe eccentric wear and tipping, etc. In this paper, the current design theory of disc cutter edge angle is analyzed, and the characteristics of the rock-breaking movement of disc cutters are studied. The researching results show that the rotational motion of disc cutters with the cutterhead gives rise to the difference between the interactions of inner rock and outer rock with the contact area of disc cutters, with shearing and extrusion on the inner rock and attrition on the outer rock. The wear of disc cutters at the contact area is unbalanced, among which the wear in the largest normal stress area is most apparent. Therefore, a three-dimensional model theory of rock breaking and an edge angle design theory of transition disc cutter are proposed to overcome the flaws of the currently used TBM cutter heads, such as short life span, camber wearing, tipping. And a corresponding equation is established. With reference to a specific construction case, the edge angle of the transition disc cutter has been designed based on the theory. The application of TBM in some practical project proves that the theory has obvious advantages in enhancing disc cutter life, decreasing replacement frequency, and making economic benefits. The proposed research provides a theoretical basis for the design of TBM three-dimensional disc cutters whose rock-breaking operation time can be effectively increased. | ZHANG Zhaohuang MENG Liang SUN Fei | 2013 | Chinese Journal of Mechanical Engineering2013，26，3： | 24 |
| 5 | 机械行业三维建模技术综述显示文摘针对机械行业广泛使用的三维建模技术进行了系统的调研分析,以常用软件为分析单元,从其功能特点、发展历程、技术更新趋势、应用领域等方面着手,进行了详细的阐述;同时阐述了三维建模技术之间以及三维建模技术与常用分析软件之间及办公软件的接口技术。希望能够引导初学者选择合适的建模技术进行学习;帮助那些要引进三维建模技术的企业合理地选择建模技术;拓宽已经掌握三维建模技术人员的眼界。 | 罗阿妮 张桐鸣 刘贺平 李杨 | 2010 | 机械制造2010，48，10： | 20 |
| 6 | The Red Edge Parameters of Different Wheat Varieties Under Different Fertilization and Irrigation Treatments显示文摘The dynamics of red edge parameters at different growth stages of wheat canopy was studied.The red edge position moved to the longer wavelength from erecting stage to heading stage, and returned to the original wavelength direction from grain-filling stage to maturity stage. The leaf total nitrogen content (LTN)is positively related to red edge amplitude (d λ red) and NIR platform amplitude (d λNIRP) and the correlation coefficient improved as growth stage extended. The chlorophyll content (TChl) is negatively related to d λ red from erecting stage to the elongation stage, and positively related to d λ red from heading stage to milky maturity stage. TChl is also positively related to d λNIRP. The leaf area index (LAI) is positively related to d λ red and d λNIRP, and the correlation coefficient improved as growth stage extended. It was concluded that d λ red and d λNIRP can be used as the indicators of winter wheat growth state, and guide the fertilization and irrigation decision making. The λNIRP is suitable for derivation of LTN, the d λ red for TChl, and the d λ red or d λNIRP for LAI. | ZHAO Chun-Jiang, HUANG Wen-Jiang, WANG Ji-hua, YANG Min-hua and XUE Xu-zhang( National Engineering Center for Information Technology in Agriculture , Beijing 100089 , P. R . China) | 2002 | Agricultural Sciences in China2002，1，7： | 15 |
| 7 | 基于Solid Edge的三维模型通用参数化程序设计方法显示文摘阐述了基于三维CAD系统的三维模型参数化设计方法 ,提出了用设计变量作为三维模型样板与参数化设计程序相联系的纽带 ,从而大大提高了程序设计效率和程序的通用性。以SolidEdge三维软件为例 ,采用VB开发技术 。 | 李世国 | 2002 | 机械设计与制造工程2002，31，1： | 12 |
| 8 | 基于SOA的RFID中间件的研究与实现显示文摘介绍了目前相对成熟的RFID中间件解决方案,包括基于Savant的RFID中间件、IBM RFID中间件和BEA WEBLOGIC RFID中间件,指出了它们的特点和不足。提出了一种基于面向服务架构(SOA)的RFID中间件架构,详细介绍了基础架构层的Edge Server、消息系统和数据接口的具体实现。并针对下一步研究工作做了简单说明。 | 邓海生 李军怀 | 2007 | 电子技术应用2007，33，10： | 12 |
| 9 | 基于候选区域和并行卷积神经网络的行人检测显示文摘针对行人在部分自然场景图像中所占比例较小(以下简称小目标),提取的特征容易丢失,检测准确率低的问题,提出基于候选区域和并行卷积神经网络(Parallel Convolutional Neural Network,PCNN)的行人检测方法。对于候选区域提取部分,改进了选择性搜索,使其更符合行人这一类别的候选区域提取;利用Edge Boxes对选择性搜索提取的大量预候选区域进行过滤,最终得到数量少、质量高的候选区域。在利用卷积神经网络(Convolutional Neural Network,CNN)进行特征提取时,针对深层卷积神经网络能够提取到更丰富更抽象的高层特征,但同时对于小目标容易造成特征丢失的问题,加入浅层网络组成并行卷积神经网络(Parallel Convolutional Neural Network,PCNN)提取深、浅层特征输出。最后将所提方法应用于行人检测,实验结果表明,所提方法对于小目标的检测准确率有较好的提升。 | 徐喆 王玉辉 | 2019 | 计算机工程与应用2019，55，22： | 11 |
| 10 | Trust Access Authentication in Vehicular Network Based on Blockchain显示文摘Data sharing and privacy securing present extensive opportunities and challenges in vehicular network.This paper introducestrust access authentication scheme’as a mechanism to achieve real-time monitoring and promote collaborative sharing for vehicles.Blockchain,which can provide secure authentication and protected privacy,is a crucial technology.However,traditional cloud computing performs poorly in supplying low-latency and fast-response services for moving vehicles.In this situation,edge computing enabled Blockchain network appeals to be a promising method,where moving vehicles can access storage or computing resource and get authenticated from Blockchain edge nodes directly.In this paper,a hierarchical architecture is proposed consist of vehicular network layer,Blockchain edge layer and Blockchain network layer.Through a authentication mechanism adopting digital signature algorithm,it achieves trusted authentication and ensures valid verification.Moreover,a caching scheme based on many-to-many matching is proposed to minimize average delivery delay of vehicles.Simulation results prove that the proposed caching scheme has a better performance than existing schemes based on central-ized model or edge caching strategy in terms of hit ratio and average delay. | Shaoyong Guo Xing Hu Ziqiang Zhou Xinyan Wang Feng Qi Lifang Gao | 2019 | China Communications2019，16，6： | 10 |
| 11 | Adjacent strong edge colorings and total colorings of regular graphs显示文摘It is conjectured that χas(G) = χt(G) for every k-regular graph G with no C5 component (k 2). This conjecture is shown to be true for many classes of graphs, including: graphs of type 1; 2-regular, 3-regular and (|V (G)| - 2)-regular graphs; bipartite graphs; balanced complete multipartite graphs; k-cubes; and joins of two matchings or cycles. | WOODALL Douglas R | 2009 | Science China Mathematics2009，52，5： | 10 |
| 12 | 基于移动GIS的烟草农田信息采集系统设计与实现显示文摘设计了基于移动GIS的烟田信息采集系统,系统以PDA为基础硬件平台,采用eSuperMap5.0作为嵌入式GIS平台,用Microsoft eMbedded Visual C++4.0进行编程开发;介绍了系统的总体结构、逻辑结构和功能模块设计,以及采集系统数据传输的实现方法。指出系统的体积小、功能全、扩展性强,能实现对烟田多源信息的即时采集、定位和采集数据的无线传输,满足烟田信息管理系统数据更新的需要。 | 陈江春 刘桔 谭建军 | 2009 | 广东农业科学2009，36，11： | 9 |
| 13 | 基于VB的SolidEdge参数化设计二次开发显示文摘介绍利用VB6 0对SolidEdge进行二次开发的一种方法。主要对SolidEdge的变量对象进行编程,实现参数化设计。 | 沈晓玲 | 2005 | 现代制造工程2005，，5： | 8 |
| 14 | Dynamically reconfigurable topological edge state in phase change photonic crystals显示文摘The observation of topological edge states(TESs) revolutionized our understanding of scattering and propagation of electromagnetic(EM) waves. Supported by topological robustness, the TES at the interface between trivial and non-trivial insulators was not reflected from the structural disorders and imperfections. Recently topological photonic crystals(PhCs) were demonstrated to obtain remarkable one-way propagation of the TES, having the advantages of lossless propagation, dense integration, and high fabrication tolerance over conventional PhCs. Nevertheless, the lack of reversible switching of TES possesses significant limitations in helicity/spin filtering and tunable photonic devices. We proposed a topological PhC based on a prototypical phase-change material, Ge2 Sb2 Te5(GST225) to solve the problem. We find that at a particular frequency, the TES within the structure can be reversibly switched between 'on'and 'off' by transiting the GST225 structural state between amorphous and crystalline. Moreover, the topology of the PhC was maintained since the tuning of TES was achieved by varying the refractive index of GST225 instead of the structural geometry. This provides a continuous change of the spectral position of the photonic bandgap and TES by gradually crystallising the GST225. We show that the phase change of GST225 from amorphous to crystalline and vice versa can be engineered in nanoseconds. Our proof of concept may offer a platform for dynamically tuning the TESs that might otherwise be challenging to attain in photonic systems. We expect it to have potential applications for photonic devices in topological optical circuits and scatter-free one-way light propagation. | Tun Cao Linhan Fang Ying Cao Nan Li Zhiyou Fan Zhiguo Tao | 2019 | Science Bulletin2019，64，12： | 8 |
| 15 | 开发SolidEdge三维参数化造型模块的方法及应用显示文摘分析了用VB实现对So1idEdge高级开发的原理和思路。阐述了基于SodEdge的三维参数化程序设计方法,对如何创建特征轮廓、生成实体特征以及三维模型的修改等给出了实现技术和关键步骤。通过实例给出了用B样条曲线拟合复杂曲线和修改曲线的程序算法。 | 李世国 | 2003 | 机械设计与制造2003，，1： | 8 |
| 16 | An Energy Efficient Design for UAV Communication With Mobile Edge Computing显示文摘This paper considers a UAV communication system with mobile edge computing(MEC).We minimize the energy consumption of the whole system via jointly optimizing the UAV's trajectory and task assignment as well as CPU's computational speed under the set of resource constrains.To this end,we first derive the energy consumption model of data processing,and then obtain the energy consumption model of fixed-wing UAV's flight.The optimization problem is mathematically formulated.To address the problem,we first obtain the approximate optimization problem by applying the technique of discrete linear state-space approximation,and then transform the non-convex constraints into convex by using linearization.Furthermore,a concave-convex procedure(CCCP) based algorithm is proposed in order to solve the optimization problem approximately.Numerical results show the efficacy of the proposed algorithm. | Lingyan Fan Wu Yan Xihan Chen Zhiyong Chen Qingjiang Shi | 2019 | China Communications2019，16，1： | 8 |
| 17 | 轻放液压支架掩护梁强度有限元分析显示文摘本文以 YFJ/ GC一 2 40 0轻型放顶煤液压支架为例 ,利用 SOLID EDGE软件对液压支架掩护梁进行强度有限元分析 。 | 乔红兵 赵雪松 范迅 康风义 | 2003 | 矿山压力与顶板管理2003，20，4： | 7 |
| 18 | A Water/Land Segmentation Algorithm Based on an Improved Chan-Vese Model with Edge Constraints of Complex Wavelet Domain显示文摘A novel model for segmentation of water/land in Synthetic aperture radar(SAR) images is presented. The proposed model calculates the global matrix of oriented gradient of histograms on wavelet subbands based on the multi-scale property, shift invariance and directional selectivity of Complex wavelet transform(CWT), then acquires edge information by thresholding the matrix. It improves the traditional Chan-vese(CV) model by adding the constraint of extracted edge information. A new water/land segmentation algorithm is then proposed based on the new model. The performance of proposed method is compared with some other existing algorithms and the experimental results confirm its effectiveness. | MAO Chenglin WAN Shouhong YUE Lihua XIA Yu | 2015 | Chinese Journal of Electronics2015，24，2： | 7 |
| 19 | 基于ADAMS的轨道运输车驱动系统三维建模及运动仿真显示文摘轨道运输小车在工程机械制造领域自动化流水线上的应用快速增长。为研究轨道运输小车驱动系统的设计合理性,使设计达到预期效果,运用Solid Edge V20完成轨道运输小车机构模型的创建,使用动力学分析软件ADAMS对该小车做了虚拟样机运动学仿真。通过一系列参数设置和校正,仿真结果与理论设计结果进行对比,对小车的驱动系统进行优化和改进,使小车达到最佳性能,并缩短产品的试制周期和降低开发成本。 | 毛龙所 王学军 | 2014 | 机电一体化2014，20，A04： | 7 |
| 20 | 三偏心蝶阀三维建模与启闭运动仿真显示文摘这里介绍了在SolidEdge中三偏心蝶阀的三维建模与装配过程,进行了静态和动态干涉检查,得到了合理的三偏心蝶阀蝶板的角偏心角α、锥顶角2β、径向偏心e、轴向偏心C值,缩短了三偏心蝶阀的设计开发周期,提高了设计效率和质量。 | 陈兵 李霄 樊玉光 杜兆年 | 2005 | 机械设计与制造2005，，6： | 7 |
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