ANINTELLIGENT DECISION SUPPORTSYSTEM（IDSS） ONTHEPROCESSOFNICKELMATTESMELTER

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Design of Distributed Authentication Mechanism for Equipment Support Information Network

Considering the secure authentication problem for equipment support information network,a clustering method based on the business information flow is proposed. Based on the proposed method,a cluster-based distributed authentication mechanism and an optimal design method for distributed certificate authority( CA)are designed. Compared with some conventional clustering methods for network,the proposed clustering method considers the business information flow of the network and the task of the network nodes,which can decrease the communication spending between the clusters and improve the network efficiency effectively. The identity authentication protocols between the nodes in the same cluster and in different clusters are designed. From the perspective of the security of network and the availability of distributed authentication service,the definition of the secure service success rate of distributed CA is given and it is taken as the aim of the optimal design for distributed CA. The efficiency of providing the distributed certificate service successfully by the distributed CA is taken as the constraint condition of the optimal design for distributed CA. The determination method for the optimal value of the threshold is investigated. The proposed method can provide references for the optimal design for distributed CA.

Parameter analysis of anchor bolt support for large-span and jointed rock mass

In order to obtain the optimal parameters of anchor bolt supporting system for large-span and jointed rock mass in Kaiyang Phosphor Mine, it is expensive and unavailable with the method of in-situ experiments. This paper describes a numerical modeling with discrete element method for the supporting effects of different type of anchor bolts. The anchor bolts with variant length of 0.5m, 0.8m, 1.0m, diameter of 10mm, 15mm, 20mm, setting spacing of 3.0m, 2.5m, 2.0m, and setting angle of 10°, 20°, 30°, are simulated respectively. The results show that there exist optimal parameters of anchor bolt support for large-span and jointed rock mass. For the bolt support of the concerning, the optimal length is 2.53.5m, the diameter is 2535mm, the spacing is 0.50.6m, and the setting angle is 105°.

Methods of Classification of Ordnance Materials Military-Civilian Joint Support Categories Based on Multiple Attribute Decision

Ordnance material is the physical basis of ordnance equipment maintenance and support. With the increase of technology content and the enhancement of structural complexity of ordnance equipment,the traditional way of military self-independent support is unable to meet the troops' requirements. It has become an inevitable trend to integrate ordnance materials with the militarycivilian joint support. However, there is a problem demanding prompt solution,that is,to distinguish the categories of ordnance material that can be supported by civilian source. Based on the inherent properties of ordnance material, a method to classify ordnance materials military-civilian joint support categories based on multiple attribute decision was proposed. The effectiveness was validated through practical cases.

The Manufacturing Equipment Support Model Based on the Manufacturing Equipment Role

This work aims to investigate the manufacturing equipment support model for the purpose of improving the efficiency and quality of manufacturing. First, the concept of manufacturing capacity is defined, and the re- lationship between practical and expected manufacturing capacity is described. Then the concept of role is intro- duced and the manufacturing equipment role is defined in detail. Based on the analysis of manufacturing capacity and manufacturing equipment role, the three-stage manufacturing equipment support model is proposed. With this model, the manufacturing task can be decomposed into several manufacturing equipment roles, and the ex- pended manufacturing capacity involved in the manufacturing equipment role can be matched with the practical manufacturing capacity of the enterprise. The measures are discussed depending on different matching degrees.

Analysis of the Improvement Methods for Equipment Maintenance Support

According to military requirement, and based on the problems of equipmentmaintenance support methods in high-tech battles, each element supporting equipment maintenance isanalyzed, and the methods for improving equipment maintenance are proposed.

Temporary Bearing Method in Construction of Continuous Beam Bridge Erected as Simply-Supported Beam

The present practice in Bangladesh for erection of girders is placing the girder directly on the bearing pad and joining the adjacent two spans in deck slab level by adopting expansion joints, as the bridges are presently designed as simply-supported beam bridge. The main disadvantage of this type of bridges is that, the seismic resistance is weak, and under the external force beyond the design range, the bridges are more likely to fall in danger because of failure in girders. Also they have expansion joints for each span, which affects the comfort of driving and the overall integrity of the bridge deck is poor [1]. Therefore, design and construction of the bridges have been revised to establish continuity between girders of two adjacent spans and transform the bridge as simply supported continuous beam bridge [2]. Temporary bearing (sandbox) method is proposed in this paper to solve the system transformation of continuous beam bridges. Design of the temporary bearing is very simple and can be manufactured at site. This method has been proved in construction of Arial Kha Bridge and can be applied for other similar bridges in Bangladesh.

Prediction of high-embankment settlement combining joint denoising technique and enhanced GWO-v-SVR method

Reliable long-term settlement prediction of a high embankment relates to mountain infrastructure safety.This study developed a novel hybrid model(NHM)that combines a joint denoising technique with an enhanced gray wolf optimizer(EGWO)-n-support vector regression(n-SVR)method.High-embankment field measurements were preprocessed using the joint denoising technique,which in-cludes complete ensemble empirical mode decomposition,singular value decomposition,and wavelet packet transform.Furthermore,high-embankment settlements were predicted using the EGWO-n-SVR method.In this method,the standard gray wolf optimizer(GWO)was improved to obtain the EGWO to better tune the n-SVR model hyperparameters.The proposed NHM was then tested in two case studies.Finally,the influences of the data division ratio and kernel function on the EGWO-n-SVR forecasting performance and prediction efficiency were investigated.The results indicate that the NHM suppresses noise and restores details in high-embankment field measurements.Simultaneously,the NHM out-performs other alternative prediction methods in prediction accuracy and robustness.This demonstrates that the proposed NHM is effective in predicting high-embankment settlements with noisy field mea-surements.Moreover,the appropriate data division ratio and kernel function for EGWO-n-SVR are 7:3 and radial basis function,respectively.

Forty years of research in animal models of human diseases and outstanding achievements in supporting human life and health

The 2nd Longtan Science Conference and the 40th anniversary of the Institute of Laboratory Animal Sciences,Chinese Academy of Medical Sciences&Comparative Medicine Center,Peking Union Medical College.On November 19-20,2020,the 2nd Longtan Science Conference and the 40th anniversary celebrations of the Institute of Laboratory Animal Sciences,Chinese Academy of Medical Sciences&Comparative Medicine Center,Peking Union Medical College(hereinafter referred to as"ILAS")were held in Beijing.The conference was jointly organized by the Institute and the Chinese Association for Laboratory Animal Sciences.

A Multi-Agent Based Equipment Bidding System on the Web

This paper puts forward a new framework of multi-agent based equipment bidding system on the Web (MAEBSW). The purpose of the paper is to make the process of enterprise equipment bidding, especially the decision process of enterprise equipment bidding, more intelligent. The system discussed in this paper is an efficient method for the enterprises doing business electronically. We also present our opinion of the approaches to defining agents. We emphasize the importance of agent being able to provide explanation about its behavior for the user or other agents. Based on this opinion we design a new common architecture of most agents in MAEBSW.

数据驱动儿童专科医院大型医疗设备运行评价体系建设

目的探索通过数据采集及分析评价儿童专科医院大型医疗设备运行水平的方法,提出大型医疗设备使用及配置建议。方法通过物联网终端采集设备运行数据,结合医院HIS、RIS、HRP等系统数据,建立儿童专科医院大型医疗设备评价指标体系,运用CRITIC法对单类、单台设备数据进行量化评价。结果医院大数据平台实现了对单台大型设备运行数据纵向分析并形成可视化图表,通过PC端及移动端展示。申康市级平台数据分析,实现对儿童专科医院大型设备运行水平的综合量化评价及使用配置建议。结论通过数据采集及分析,实现儿童专科医院大型设备运行评价体系建设,提升大型设备管理水平。

某型舰船设备大负载复合材料支承冲击强度试验方法研究

舰船设备支承件的冲击特性研究受到各国海军的重视,然而超过常规冲击机能力范围的冲击载荷等要求,使得开展大负载支承件冲击强度试验成为难题。以某型动力设备的大负载复合材料支承为对象,采用水下非接触爆炸的方式,以标准浮动冲击平台冲击环境为输入参数设计其冲击强度试验方法:在低速冲击条件下,通过保证冲击载荷、降低试验负载质量、提高系统安装频率的途径来设计试验装置,依据冲击谱和冲击载荷计算对应的试验冲击因子来设计强度试验工况,并得出了实际试验与设计参数之间因试验系统多个结合面对冲击载荷传递影响的折减系数。试验结果表明,复合材料支承承受的冲击载荷与要求值之间的偏差在5%以内,为今后开展类似试验提供了参考。

装配式地连墙接缝变形特性研究

为了研究接缝对装配式地连墙变形特性的影响并采取合理的改进措施,采用现场试验的方法将局部现浇地连墙替换为装配式地连墙,并对其实测的变形数据进行了对比分析;在实测数据分析的基础上,通过PLAXIS2D有限元软件模拟分析了不同深度横向接缝对装配式地连墙变形特性的影响规律;通过PLAXIS3D有限元软件对比了现浇墙与装配式地连墙水平方向及竖直方向变形形态,分析了竖向接缝对装配式地连墙变形特性的影响规律;最后,针对实测数据显示出的变形偏大问题,提出了改变冠梁刚度、围檩刚度、墙幅宽度、支撑位置4种改进措施,并通过PLAXIS3D有限元软件进行了验证。结果表明:装配式地连墙的接缝对墙体的刚度存在弱化作用,增大了其变形程度;位于坑底以上的横向接头失效时,墙体水平位移会显著增大,位于坑底以下的横向接头失效时,不会引起墙体水平位移的显著增大;竖向接头会显著减小装配式墙体的整体刚度,使其协同变形能力变差,变形更加难以控制;适当调节支撑位置可有效缓解墙幅间的错动和减小墙体变形。

基于多层耦合网络的装备保障体系级联失效及抗毁性分析

为准确描述装备保障体系结构特征与毁伤失效流程,进而提升装备保障体系功能与抗毁能力,基于杀伤层、保障层和储供层构建装备保障体系的多层耦合网络模型。基于杀伤链给出装备维修保障链与储供保障链的特征和典型样式,在此基础上,提出考虑装备保障体系多层耦合网络特性的级联失效模型与节点重要度评估方法。给出对应的网络抗毁性评估指标。仿真结果表明,考虑级联失效的多层耦合网络模型能较好地反映遭受攻击时整个装备保障体系的性能变化情况,所提出的使命任务节点重要度能准确识别关键节点。与传统网络抗毁性指标相比,杀伤链数量对节点失效产生的装备保障体系抗毁性变化更加敏感。

基于模块化思想的航空装备保障设备功能型谱标准研究

为了研究如何将MOSA(模块化开放系统方法)应用于航空装备保障设备的设计研制工作中,本文分析了MOSA的发展历程以及MIL-STD-864如何将模块化设计方法应用于保障设备设计研制领域,阐明了美军保障设备模块化设计方法对我军保障设备发展的启示。以此为基础,进一步开展我军航空装备保障设备功能型谱发展建议研究,先后提出了保障设备模块化设计方法以及模块化保障设备功能型谱设计方法,明确了标准化对于保障设备模块化设计的意义,提出了航空装备保障设备功能型谱。为推进保障设备模块化设计思路在我军的应用提供了引导和支撑。

高应力破碎围岩巷道控制机理及支护技术

为解决高应力破碎围岩巷道围岩支护效果差、变形破坏严重等问题,以东峡煤矿37221-2回风巷为背景,通过现场勘察、理论分析和现场试验相结合的方法,研究了高应力破碎围岩巷道的变形破坏特征和控制原理。基于原支护方案及分析成果,提出了“注浆管浅部注浆+锚杆+注浆锚索+钢筋网”的联合支护方案。现场工业试验结果表明,采用优化支护后顶底板最大移近量和两帮最大收敛量同原支护方案相比,分别减少了约77%、82%,围岩的整体性和稳定性良好。该研究可为高应力破碎围岩巷道、围岩控制提供参考和技术支持。

政社力量帮扶事实无人抚养儿童家庭的联动机制研究——以上海市为例

现代家庭的儿童保护功能趋向弱化甚至缺失,本研究关注地方政府和社会力量在为事实无人抚养儿童家庭提供福利服务方面如何开展联动工作并优化协同路径,通过分析相关政策文件,并在政策实施地开展参与观察、半结构访谈和焦点小组访谈总结地方帮扶经验,借助生态位理论视角对事实无人抚养儿童家庭关爱服务生态系统进行全面梳理。研究发现,不同层级的政府部门、群团组织和社会组织三大福利供给主体分别构成了三条生态链主线,通过“政社合作”和“群社协同”两条上行和下行联动路径吸纳各类社会资源并转化为社会服务。其中,专业社会组织处于关键生态位,是各类联动工作的中枢核心;发现报告是联动工作的关键环节,但仍需进一步优化协作机制。未来应强化专业社会组织的培育与发展,实施家庭增权服务,管控伦理风险,推进社会力量的有序联动和社会资源的广泛吸纳,并完善相关儿童福利政策监督反馈机制,以增进事实无人抚养儿童家庭的福祉。

基于DEMATEL方法的科学基金项目绩效关键影响因素识别及实证研究——以促进海峡两岸科技合作联合基金项目为例

基础研究是应用研究和重大创新之源,联合基金作为国家基金委联合地方政府支持基础研究的主渠道之一,对提升地区原始创新能力、促进人才队伍建设发挥重要作用。为了真实反映促进海峡两岸科技合作联合基金资助项目的学术水平,从创新成果、人才培养、合作交流、项目延伸和间接影响等5个维度构建结题项目绩效评价指标体系,运用DEMATEL法分析15个二级指标之间的关联影响,结合多层次模糊综合评价法构建模型,并以某大学承担的重点支持项目为案例对影响项目绩效的关键因素进行实证分析,确定这个项目绩效评价等级。实证结果表明:DEMATEL法可以识别影响项目绩效的关键指标;模糊综合评价模型既考虑了评价对象的模糊性,也兼顾了指标体系的层次性,综合评价结果更具科学性。

大型钻探设备支承底盘焊接工艺优化研究

大型支承底盘作为大型钻探设备的支承平台,通常由大量钢板通过焊接装配而成,焊接残余应力和残余变形会对底盘的强度和刚度产生一定的影响。本文运用有限元分析方法,选取高斯移动热源,针对大型支承底盘中具有代表性的T形焊接接头建立了有限元模型,分别采用4种不同的焊接顺序和焊接速度,分析了其对焊接应力和变形的影响,得到了优化的焊接顺序和焊接速度。在此基础上,对底盘的整体焊接方案做出优化,对比分析了优化前后的焊接应力和变形,结果表明:优化后残余应力减少了约7%,最大变形减少了约26%。研究成果可为焊接工艺的制定提供参考。

基于主体基建模(ABM)的中国智能制造装备产业演化研究

智能制造装备面向的是具有复杂决策机制的制造企业,因此其产业演化规律相较于其他新兴产业有更强的特殊性。目前中国智能制造装备的市场份额较少、缺乏竞争优势,智能制造装备企业难以实现可持续发展。因此,在关键核心技术短期无法突破场景下,探讨政府高效推动智能制造装备市场结构变化、对智能制造装备产业演化的作用机制。通过问卷调查收集智能制造装备市场真实数据,在主体基建模方法(ABM)框架下构建国内外智能制造装备企业决策模型与制造企业决策模型,模拟智能制造装备产业演化过程,分析智能制造装备企业数量、市场需求数量和市场需求分布等市场结构核心参量变化特征,并进一步探究不同扶持政策对产业演化的作用效果。结果发现:在智能制造装备产业演化过程中,市场需求结构的变化是改变国产智能制造装备企业市场份额的关键要素,国产智能制造装备企业市场需求数量经历“增长—下跌—再增长”3个阶段,市场需求在空间上呈“分散—集聚—扩散”分布;在无外部力量干预的情境下,国产智能制造装备企业的市场份额存在显著的持续下降趋势,无论是面向市场需求数量还是面向产品质量提升的政策措施都有利于提升国产智能制造装备企业在产业中的市场状况;不同的政策策略对产业演化进程产生的效果不同,面向产品质量提升的政策对提升国产智能制造装备企业的市场份额效果更显著。