Seismic Response Analysis of Structure with Cooperation of Laminated Rubber Bearing and Wind-Resistant Support

The purpose is to study the seismic reduction effect of an isolated structure,with wind-resistant bearings( WRBs) setting on its isolation layer to withstand great wind load,and the working mechanism of the WRB. In this paper,two isolation models with /without WRBs,taking an actual engineering as the background,are established in the finite element software ETABS. The one with WRBs has horizontal damping coefficient less than 0. 40 while the other between 0. 40 and 0. 53. WRBs are simulated by Plastic 1element and the collaborative work between them and isolation layer is described by a mechanical model. Time history analysis is conducted on the models to compare their responses under earthquake excitations. Results show that the one with WRBs,but less lead-rubber bearings( LRBs),has better damping effect than the other,although they both can meet wind requirements. It is also shown that under normal conditions and small earthquakes,WRBs function well and the isolation layer will not yield; under moderate earthquakes,WRBs will yield and be destroyed to stop functioning but without affecting the damping effect of the upper structure.Additionally, the total yield shear force provided by LRBs is proposed to be close to the standard value of wind load.

Effect of teach-back health education combined with structured psychological nursing on adverse emotion and patient cooperation during 99mTc-3PRGD2.SPECT/CT

BACKGROUND 99mTc-3PRGD2.SPECT/CT is a commonly used examination method in nuclear medicine.However,patients receiving 99mTc-3PRGD2.SPECT/CT have insufficient knowledge of this method and worry about the examination results.AIM To investigate the effect of teach-back health education combined with structured psychological nursing on adverse emotion and cooperation in patients undergoing 99mTc-3PRGD2.SPECT/CT examination.METHODS Ninety patients undergoing 99mTc-3PRGD2.SPECT/CT examinations were divided into a study group and a control group using a simple random number table,and 45 cases were allocated to each group.Routine nursing was provided to the control group,and teach-back health education combined with structured psychological nursing was provided to the study group on the basis of the control group.Heart rate,diastolic blood pressure,systolic blood pressure,self-rating depression scale(SDS),and self-rating anxiety scale(SAS)were assessed before and after the intervention,and examination cooperation and intervention satisfaction were assessed in the two groups before,during,and after the examination.RESULTS Before the examination,heart rate,diastolic blood pressure,and systolic blood pressure in the study group were not significantly different from the values of the control group(P>0.05).The results of the study group before and after the examination were lower than those in the control group(P<0.05).Before the intervention,SDS and SAS scores in the study group were not significantly different from those in the control group(P>0.05).After the intervention,SDS and SAS scores in the study group were lower than those in the control group(P<0.05).The degree of cooperation was higher in the study group than in the control group(P<0.05).The satisfaction rate with the intervention was higher in the study group than in the control group(P<0.05).CONCLUSION Teach-back health education combined with structured psychological nursing can help maintain the stability of blood pressure and heart rate,relieve negative emotions,and improve the satisfaction and cooperation of patients undergoing 99mTc-3PRGD2.SPECT/CT examinations.

Upstream-downstream cooperation approach in Guanting Reservoir watershed

A case study is introduced and discussed concerning water dispute of misuse and pollution between up\| and down\|stream parts. The relations between water usage and local industrial structures are analyzed. Results show it is important to change industrial structures of the target region along with controlling water pollution by technical and engineering methods. Three manners of upstream-downstream cooperation are presented and discussed based on the actual conditions of Guangting Reservoir watershed. Two typical scenarios are supposed and studied along with the local plan on water resources development. The best solution for this cooperation presents a good way to help the upstream developing in a new pattern of eco-economy.

Case Study on the Forestry Cooperation Model from Game Structure Perspective

Take Chinese yew cooperative organization for example,different game structures of forestry cooperation model were analyzed,the elative merit and applicable occasion was discussed combined with empirical investigation,and some suggestions were given also.The results showed that depending entirely on normal forest farmers cooperate spontaneously is difficult.Policies should be designed from the perspective of promoted village cadres and influential family salons to cooperation.When market factors become the main obstacle,it is necessary to introduce companies,relax constraints of forest management and build the right market atmosphere.According to unequal status of company and forest farmers,develop the cooperation model of " company + cooperation organization + farmers".In certain circumstances,especially there are several companies vicious competition,the intervention of association can play a coordinating role.

Structure, Evolution and Hot Spots of Cooperation Innovation Knowledge Network

Based on the statistics analysis of cooperation innovation articles, the paper analyses the distributing characteristics of cooperation innovation research papers. The distribution, structure and evolution of cooperation innovation research are studied through the social network and co-word method, combined with the information visualization technology. This study is based on the papers in the SSCI database during 2000-2014. The analysis and statistics of papers reveal distribution characteristics of the subject, time, institutions, countries and areas. The statistics shows that the research perspective of cooperation innovation from business and economics. The time distribution presents that research of cooperation innovation attracts enormous attention and the research achievement is increasing. From the distribution of organizations, countries and areas, North America and Europe countries maintain the leading position in this research field. But institutions and universities of China and other Asian countries or areas are witnessed their outstanding achievements in cooperation innovation research. Combining the co-word network analysis method, the paper studies the structure and content of cooperation innovation knowledge network in five stages and makes the net spectrum, visually showing the hot spots at various periods. The top highly cited papers in all five stages are reviewed simultaneously;their research hot spots and evolution process are concluded. The study shows 11 subjects including strategic alliances, social networks, R&D cooperation, R&D, technology transfer, alliances, knowledge management, social capital, entrepreneurship, trust, biotechnology are always the central issues in last 15 years. The focus of research is from the relationship between alliance and technology innovation to networking and knowledge innovation and then to open innovation.

Elucidating the promotion mechanism of the ternary cooperative heterostructure toward industrial-level urea oxidation catalysis

From the perspective of electronic structure modulation,it is highly desirable to rationally design the active urea oxidation reaction(UOR)catalysts through interface engineering.The binary cooperative heterostructure systems have been shown significant enhancement for catalyzing UOR,but their performance still remains unsatisfactory for industrialization because of the unfavorable intermediate adsorption/desorption and deficient electron transfer channels.In response,taking the ternary cooperative Ni_5P_(4)/NiSe_(2)/Ni_(3)Se_(4) heterostructure as the proof-of-concept paradigm,a catalytic model is rationally put forward to elucidate the UOR promotion mechanism at the molecular level.The rod-like Ni_5P_(4)/NiSe_(2)/Ni_(3)Se_(4) nanoarrays with three-phase heterojunction are experimentally fabricated on Ni foam(named as Ni_5P_(4)/NiSe_(2)/Ni_(3)Se_(4)/NF)via simple two-step processes.The density functional theory calculations disclose that construction of Ni_5P_(4)/NiSe_(2)/Ni_(3)Se_(4) heterostructure model not only induce charge redistribution at the interfacial region for creating innumerable electron transfer channels,but also endow it with a moderate d-band center that could help to build a balance between adsorption and desorption of diverse UOR intermediates.Benefiting from the unique rod-like nanoarrays with large specific surface area and the optimized electronic structure,the well-designed Ni_5P_(4)/NiSe_(2)/Ni_(3)Se_(4)/NF could act as a robust catalyst for driving UOR at industrial-level current densities under tough environments,offering great potential for commercial applications.

无人机集群协同控制技术综述

协同控制技术作为多智能体分工合作完成任务的关键核心技术,能解决无人机集群编队、队形重构和避障避碰等问题,是无人机集群正常运作的基础。针对近几年国内外无人机集群协同控制技术的发展历程,概述3种控制结构原理及其优缺点;分析了基于3种控制结构的编队控制方法及其优缺点;从无人机集群协同编队控制技术出发,分析基于编队控制的避障方法;指出了现阶段无人机集群协同控制技术面临的瓶颈问题,并对协同控制技术的未来发展方向进行了展望,为无人机集群编队控制和避障方法研究提供一定的借鉴。

数字化转型提升企业创新效率的网络机制——合作和知识双重创新网络结构洞的中介作用

企业数字化转型不仅拓展和优化了创新网络,也使创新网络在创新驱动发展中的作用日益重要。基于网络结构洞理论,从创新合作网络和创新知识网络(双重创新网络)角度分析数字化转型通过增强企业在创新网络中的“桥梁”作用来提升企业创新效率的机制,并采用沪深A股制造业上市公司2013—2021年的数据进行实证检验,结果发现:制造业企业数字化转型能够显著提升其创新效率,该作用在非国有企业中更为显著;双重创新网络结构洞是数字化转型影响企业创新效率的中介变量,即存在“数字化转型水平提高→双重创新网络结构洞增加→创新效率提升”的影响路径;企业组织韧性提高能够强化数字化转型对网络结构洞的正向影响,但对网络结构洞影响创新效率没有显著的调节作用。因此,应积极推进企业数字化转型,通过拓展和优化创新网络来促进企业创新效率提升,并不断提高企业的组织韧性以有效化解转型风险。

教育强国背景下中外合作办学提升高等教育国际影响力策略研究

在加快建设教育强国进程中,中外合作办学对提升高等教育国际影响力具有重要作用,且在提升拔尖创新人才培育力、国际学生吸引力、科研学术引领力、跨境教育“中国方案”影响力等方面具备了一定基础。然而,目前我国中外合作办学尚存在结构布局不够均衡、拔尖创新人才培养质量有待提高、服务国家和地方发展能力亟须提升、高效能治理体制机制尚需完善等问题。为此,中外合作办学应加大改革创新力度,补齐短板,在适度统筹规模和效益、调整优化结构布局,加大支撑保障力度、多渠道提升人才培养质量,聚焦科技前沿和国家关切、把好引进和审批准入关,完善合作办学治理体系、探索中国特色的合作办学模式等方面持续发力,不断提高中外合作办学水平,切实提升我国高等教育国际影响力。

高阶结构对无标度网络上合作行为演化的影响

为研究高阶结构对无标度网络上合作行为演化的影响,构建基于囚徒困境博弈的网络博弈模型。在无标度网络上引入二阶高阶结构,定义含成对博弈的三角形面博弈,用高阶结构参数联系成对博弈收益与面博弈收益,并通过仿真实验分析高阶结构对合作行为演化的影响。结果表明,当高连接度个体优先合作并获得高收益时,会促使其他连接度个体也选择合作,博弈个体间一旦形成稳定的“全合作”三角形策略结构,就能显著提高每个合作者收益,进而促进合作行为的产生。

高职学生实习结构化转向:现实归因、逻辑框架与推进策略

高职学生实习频发的“放羊”现象,对达成职业教育高质量发展的愿景十分不利。从政策、实践和个体三重话语体系明晰高职学生实习结构化转向的现实必要性,准确把握影响实习效果的痛点所在。因此,结合文化—历史活动理论的系统审思,以高职学生实习结构化转向的意蕴表征为出发点,聚焦于高职学生实习结构化转向的运行机制,最终形成高职学生实习结构化转向的逻辑框架。同时,在加快推进现代职业教育体系建设改革的关键时期,可从聚焦关键矛盾的结构性张力,实现拓展性学习;开发“变革实验室”的方法,展开形成性介入;发挥“反思性实践”的功效,促进知识的转移等方面,化解高职学生实习“放羊”危机,有效推进高职学生实习的结构化转向。

水下人-机协同搜救作业人因可靠性分析研究

为分析水下人-机协同搜救作业人因可靠性并识别其关键影响因素,根据水下搜救训练实际和相关研究结论提取人因可靠性影响因素;建立人因可靠性影响因素体系,利用解释结构模型定性分析各影响因素间相关关系,将建立的各影响因素的解释结构模型转换为贝叶斯网络拓扑结构,分别构建潜水员作业、无人遥控潜水器(ROV)作业、人-机协同作业人因可靠性分析贝叶斯网络;通过对3类贝叶斯网络进行推理,揭示影响人因可靠性的关键因素及其依赖关系,并定量分析3种作业模式下的人因可靠性变化。结果表明:人-机协同搜救作业中“误解意图”“通信不畅”“信息不对称”“作业精度不足”“丧失救助能力”等影响因素起到关键作用;当上述因素得到较好控制时,人-机协同搜救作业的人因可靠性将会表现出优于单纯的ROV或潜水员独立施救的效能。研究结果可为水下搜救作业人因可靠性分析与提升提供参考。

农民分化结构下日本基层农业协同组合的发展经验和启示——以山形县置赐农业协同组合为例

本文以日本基层农业协同组合为例,探讨农民分化结构下合作经济组织的发展路径,并对完善中国农民专业合作社制度提出对策建议。研究发现,随着城镇化、工业化快速发展,农民在规模、年龄、地权关系、经营和产业链融合等方面出现显著分化,并且已成为常态。日本基层农业协同组合利用制度优势,在坚持合作经济原则不变的前提下,一方面,打造地区公共品牌增加产品附加值、降低农资采购成本和成员风险防控成本,通过降本增效的方法满足分化农民的共同诉求;另一方面,针对不同规模、不同年龄、不同经营方式的分化农民制定具有针对性的帮扶政策,有效满足分化农民多维度的个性需求,实现农民与基层农业协同组合的共同发展。鉴于中国国情,建议通过健全成员认定制度、完善内外监管制度和增强合作社为农服务能力促进中国农民专业合作社高质量发展。

公益跨界合作系统的耗散结构及演化发展

面对社会环境的复杂性和人们公益需求的异质性,公益跨界合作成为公益组织、政府、企业三大主体的共同选择。公益跨界合作是一个耗散结构系统,具有开放性、非平衡态、非线性相互作用、涨落等结构特征,这种特征在总体上会促使系统从无序演化为有序。以耗散结构理论审视当前我国的公益跨界合作系统,发现其存在开放性有限、输出同质化、协作运行不畅、涨落负面干扰等问题。对此,要在整体把握公益跨界合作系统耗散结构机理的基础上,拓宽空间以增强系统开放性,创新服务以推动系统远离平衡态,加强整合以发挥主体间非线性作用,挖掘和利用关键因素以促进系统形成有效涨落,由此推动公益跨界合作系统的更新演进,提高公益慈善的供给侧能力。

中外合作办学人才培养新模式研究——以“混凝土结构”课程为例

随着国家对中外合作办学的支持,越来越多的高校致力于对中外合作办学模式的探讨。青岛理工大学土木工程学院以“混凝土结构”课程为例,针对中美合作办学培养新模式构建了经济全球化背景下源源不断培养国际人才的教学体系:中外教师先后对同一门课程进行线下课堂与远程授课紧密结合的“三位一体”教学,实行“分步走一体化”的流程,保证学生能够立足于国内外的混凝土建筑案例,夯实专业基础,充分拓宽国际视野。与传统中外合作办学模式相比,新型模式避免了赴外求学可能面临的种种风险,提高了学生对外文专业知识的了解程度。最终达到培养着眼于国际视野的高素质技术人才的目标,保证各种突发情况下国际化人才教育培养不停摆。

我国既有多层住宅加装电梯费用分摊的合作博弈模型及其公理化刻画

本文结合我国当前城市既有多层住宅加装电梯费用分摊问题的实际,引入了具有联盟结构的赋权合作博弈模型。在该类博弈中,参与者将依据现实情况进行结盟,形成所谓的“优先联盟”。在此基础上,提出了被称为权分值的分摊规则,并证明了它可以由可加性、联盟内比例对称性、联盟间比例对称性和空化参与者性四个公理唯一确定。作为这个合作博弈模型的应用,本文将我国城市既有多层住宅加装电梯费用分摊问题可归结为具有联盟结构的赋权合作博弈模型,其中业主为参与者,而每一层的参与者们可看作一个优先联盟。当取适当的权值时,该分摊规则涵盖了我国大部分城市出台的既有多层住宅加装电梯业主费用分摊的指导标准,这为这些标准的完善、推广和实施提供了合理的理论依据。

“钟摆逻辑”:有限结构化的村务工作模式——基于湖北S村的经验研究

我国村级组织具有复杂性,在村务工作的组织模式、规范要求和具体内容等层面存在较大差异。研究发现,基层的村务工作呈现出明显的“钟摆逻辑”,即面对常规任务和特殊任务采取不同的应对方式。在处理常规任务时,运用分工合作的模式,将任务进行条线分割,主要采用坐班制、固定工作场所及规则治理等手段;而面对特殊任务时,则结成“行动班子”,以团结合作、工作动员等方式来应对。这种在常态模式与动员模式之间的切换使得村务工作处于有限结构化的状态,有助于提升基层治理效能。

高等教育赋能新质生产力发展:机制逻辑与实证检验

高等教育作为畅通教育、科技、人才良性循环的关键汇聚点,对推动经济社会高质量发展具有基础性作用,是促成新质生产力的先导性变量。基于2010—2022年中国省级面板数据,实证考察高等教育对新质生产力的影响及其内在机制,结果表明:高等教育对新质生产力发展具有显著的促进作用,该结论在一系列稳健性检验和内生性处理后仍然成立;人力资本积累、高校科技创新、产学研合作及产业结构高级化是高等教育推动新质生产力水平提升的重要渠道;高等教育对新质生产力的赋能效应在中西部地区、经济发展水平较低地区中更为明显;而且这种正向影响具有空间溢出效应,对空间邻近地区的促进作用更强。我国应从以下方面推动新质生产力加快发展:进一步优化高等教育资源配置,完善中西部地区教育政策供给体系;切实增强高等教育的传导效果,汇聚培植新质生产力的教育势能;建立新质生产力发展的空间关联意识,畅通高等教育、科技、人才要素的跨区域循环机制。

合作网络嵌入对企业技术创新绩效的影响——基于知识网络凝聚性视角

基于网络嵌入理论和知识基础理论,利用我国电子信息产业114家企业的面板数据,实证分析了合作网络嵌入对企业技术创新绩效的影响,并进一步探究企业知识网络的凝聚水平对该过程的调节作用。结果表明,合作网络中的关系嵌入对企业技术创新绩效具有正向影响,结构嵌入对技术创新绩效具有负向影响;企业知识网络的全局凝聚性在结构嵌入对企业技术创新绩效的影响中具有正向调节作用,在关系嵌入对技术创新绩效的影响中不具有调节作用;企业知识网络局部凝聚水平在关系嵌入和结构嵌入对技术创新绩效的影响中均具有正向调节作用;合作网络嵌入对东部地区企业的技术创新绩效影响更为显著。

跨境侦查协作的有序性演进——基于耗散结构论视角

跨境侦查协作系统天然契合开放性、非平衡态、非线性以及存在涨落等四个条件,呈现为一个典型的耗散结构。耗散结构理论认为系统条件满足后可自发地向有序性目标演进,这为跨境侦查协作系统克服“因素”和“连接”两个层面的现实阻碍,实现协同有序发展提供了独特的借鉴思路。基于此,应以独立性意识构筑协作前提,以开放性姿态促进系统整合完善,以竞合性理念形成要素间协同制约,以预判性思维应对风险挑战,从而推动跨境侦查协作在非平衡动态中实现有序性发展。