工业云计算平台的研究与实践

云计算平台和云计算服务模式已成为后超算时代计算服务的主流载体和主流服务模式,其所蕴含的技术变革和创新服务模式将深刻影响到产业技术创新及产业竞争格局的发展,加快区域科技自主创新和区域经济结构调整的步伐。分析了云计算平台推动制造业创新发展的必然性,剖析了工业云平台的体系架构及其关键技术,并介绍了平台的开发、实现及典型应用实例。该平台已经服务北京区域经济体近100多家用户,有效地推动了区域经济体的创新发展。     

农业院校图书馆开展智库类服务的探讨

农业院校图书馆推广智库类服务对图书馆,对学校和对智库团队所服务的对象三方来说是"共赢",从开展智库类服务的必要性出发,提出了一些农业院校图书馆开展智库类服务的建议。     

高职机械制造与自动化专业建设的探索与讨论

本文将从五个方面来指导专业建设:从坚持服务区域经济办学定位,实现学校可持续发展;建设品牌专业,切实发挥带动作用;构建三级体制平台,充分释放办学活力;实施两大素质工程,提升人才培养质量;拓展一体化服务功能,增强社会服务能力。     

区域制造业信息化公共技术平台服务模式的研究

从区域制造业信息化公共技术平台集成提供网络化、开放式、跨行业、多领域、敏捷性全面信息化服务的需求特点出发,阐述了服务模式的设计和选择在平台建设中的重要性,分析了信息化服务的不同模式及其特点,提出了一套基于ASP的平台运营服务模式的设计方案.     

佛山地区模具制造业中的电子商务技术应用研究

调查并分析了佛山地区模具制造业企业对电子商务技术的需求情况,提出了区域协同电子商务平台的构架,并对区域协同电子商务平台的交易模式、管理模式、服务对象模式、运营模式进行了分析,讨论了在现阶段发展区域协同电子商务模式的优势。     

区域制造业信息化公共技术平台服务模式的研究

从区域制造业信息化公共技术平台集成提供网络化、开放式、跨行业、多领域、敏捷性全面信息化服务的需求特点出发，阐述了服务模式的设计和选择在平台建设中的重要性，分析了信息化服务的不同模式及其特点，提出了一套基于ASP的平台运营服务模式的设计方案。     

佛山地区模具制造业中的电子商务技术应用研究

调查并分析了佛山地区模具制造业企业对电子商务技术的需求情况，提出了区域协同电子商务平台的构架，并对区域协同电子商务平台的交易模式、管理模式、服务对象模式、运营模式进行了分析，讨论了在现阶段发展区域协同电子商务模式的优势。     

电子商务技术在区域制造业中的应用研究

调查并分析了成德绵区域内制造业企业对电子商务技术的需求情况，提出了区域协同电子商务平台的构架，并对区域协同电子商务平台的交易模式、管理模式、服务对象模式、运营模式进行了分析，讨论了在现阶段发展区域协同电子商务模式的优势。     

新型家庭服务机器人亮相深圳

正日前,深圳市中舟智能科技有限公司在2017深圳国际工业自动化及机器人展览会上发布了区域高精度定位系统、家庭服务机器人、室内通用运输平台、室外通用运输平台、第二代送餐机器人等新产品,其中,家庭服务机器人尤其吸引眼球。此次发布的新型家庭服务机器人以智能家居与家庭教育为设计理念,开创性地采用了     

云计算环境下数字图书馆安全管理

随着社会生活的进步与互联网技术的发展,众多领域的数据计算需求也越来越大,超大规模海量数据的处理能力已远超自身的IT架构计算能力,所以必须增加系统硬件投入以实现系统的可扩展性。目前,云计算模式作为现代数字图书馆信息系统操作底层架构,它在数据共享、应用平台、软件环境等方面不断优化了图书馆改革、改善了图书馆服务,深刻影响着数字图书馆的运作与服务模式。本文通过介绍云计算的概念与特点,分析云计算与数字图书馆的关系,总结云计算环境下数字图书馆的安全管理问题,探讨云计算环境下数字图书馆的安全管理措施,期以采用云计算模式优化图书馆改革,促进图书馆服务水平的提高。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

INTEGRAL EQUATION METHOD＇S APPLICATION IN HOLE-EDGE STRESS OF COMPOSITE MATERIAL PLATE WITH DIFFERENT SHAPED HOLES

The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.     

Application of Feature Extraction through Convolution Neural Networks and SVM Classifier for Robust Grading of Apples

This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...     

分布动态载荷识别的抗噪处理

针对正交多项式频域法在用多种响应对矩形薄板进行载荷识别中抗噪性较差的问题,综合运用平均法、矩阵预处理和奇异值截断法等方法对之进行改善,并引入空间映射的思想,将该方法的应用范围拓展为复杂的模型.利用仿真算例,证实了该方法具有较好的抗噪性.     

基于MELTAC-N平台的核电厂安全级DCS环网研究与测试

针对工程实践中环网通讯相关问题的处理缺乏理论基础及国产化安全级DCS平台的开发缺乏成熟经验借鉴问题,对基于MELTAC-N平台核电厂安全级DCS环网的软硬件实现进行了研究。提出了安全级DCS环网双环网冗余设计、光切换开关设计等硬件设计方法,以及以RPR协议为基础,采用全数据收发策略的软件设计方法。在CPR1000安全级DCS平台上对安全级DCS环网的可靠性及实时性进行了评价,并进行了容错能力、响应时间及响应时间稳定性测试验证实验。结果表明,基于MELTAC-N平台安全级DCS环网软硬件设计具有较好的容错能力及响应时间稳定性。     

Short-Term Relay Quality Prediction Algorithm Based on Long and Short-Term Memory

The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...     

End-to-End Multiview Gesture Recognition for Autonomous Car Parking System

The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....     

The laboratory simulation of abrasive wear

Abrasive wear has long been recognised as one of the most potentially serious tribological problems facing the operators of many types of plant and machinery; several industrial surveys have indicated that wear by abrasion can be responsible for more than 50% of unscheduled machine and plant stoppages. Locating the operating point of a tribological contact in an appropriate operational ‚map’︁ can provide a useful guide to the likely nature and origins of the surface degradation experienced in use, though care must be exercised in choosing the most suitable parameters for the axes of the plot. Laboratory testing of materials and simulations of machine contacts are carried out for a number of purposes; at one level for the very practical aims of ranking candidate materials or surface hardening treatments in order of their wear resistance, or in an attempt to predict wear lives under field conditions. More fundamentally, tests may be aimed at elucidating the essential physical mechanisms of surface damage and loss, with the longer term aim of building an analytical and predictive model of the wear process itself. In many cases, component surface damage is brought about by the ingress of hard, particulate matter into machine bearing or sealing clearances. These may be running dry although, more usually, a lubricant or service fluid is present at the interface. A number of standardised wear test geometries and procedures have been established for both two- and three-body wear situations, and these are briefly described. Although abrasive wear is often modelled as following an ‚Archard’︁ equation (i.e. a linear increase in material loss with both load and time, and an inverse dependence on specimen hardness) both industrial experience and laboratory tests of particularly lubricated contacts show that this is not always the case: increasing the hardness differential in an abrasively contaminated lubricated pair may not always reduce the rate of damage to the harder surface.     

Limits of topographic measurement by the scanning tunnelling and atomic force microscopes

Parameters describing the topographic character of a surface (height, surface wavelength, slope and curvature) can be derived from equivalent sinusoidal profiles. The response of a surface-measuring instrument may be modelled in terms of instrument parameters such as stylus radius, and scanning range and resolution. The performance of the instrument may then be mapped as a zone in amplitude-wavelength (AW) space to show the sinusoidal profiles it is capable of measuring. In a first-order analysis the STM and AFM are considered as equivalent to contact-stylus instruments with a notional stylus radius equal to the tip radius plus the gap. Comparisons between different instruments and types of instrument are readily made by mapping in AW space. The error arising from convolution of the sinusoidal profile with that of the finite tip may be quantified and plotted as contours in AW space.