应对工程延误:复杂项目组织同步策略研究     

杨琳  胡昕冉 《科技管理研究》2020,40(17):226-234

选定3类特征度量分析网络,通过问卷调查筛选关键节点,精简网络模型,阐释复杂项目组织同步的路径,以杭州市轨道交通4号线一期工程作为实例,利用Net Miner可视化网络模型,提出应对工程延误的组织同步的有效策略。  相似文献   

A blockchain-based framework of cross-border e-commerce supply chain     

《International Journal of Information Management》2020

Blockchain technology provides us a new tool to solve the product traceability problem in supply chain management. This research focuses on the cross-border e-commerce context, to propose a blockchain-based framework, and develop a set of corresponding techniques and methods for achieving traceable products and transactions in supply chain management. A general blockchain-based product traceability framework is introduced. This framework is based on a cross-border e-commerce supply chain context, incorporating a series of blockchain-based models, including multi-chain structure model, data management model and block structure model. Several core methods and algorithms are also developed, such as information anchoring method, key distribution method, information encryption algorithm and anti-counterfeiting method. The framework, models and methods form a complete and comprehensive solution, which are evaluated by applying to several typical problems and attack cases. The case analysis results show that the framework, models and methods can successfully deal with key recover problem, and protect against clone attack, counterfeit tag attack and counterfeit product attack. The effectiveness, extendibility, security, implementation and governance issues of applying these solutions are also discussed. This research contributes to the theoretical and practical literatures on blockchain technology, cross-border e-commerce and supply chain management research fields.  相似文献   

Blockchain in the operations and supply chain management: Benefits,challenges and future research opportunities     

《International Journal of Information Management》2020

Blockchain technologies have captured the imagination of scholars, managers, and practitioners around the world. It is widely accepted by these actors that blockchain is not a buzzword, but a highly disruptive technology that is already remodeling the organizations and their supply chain business models. Despite the meaningful advance in the last years, blockchain applications regarding the operations and supply chain management (OSCM) are still in their infancy. Little is known about the role of blockchain in terms of operations traceability, as well in areas such as e-commerce, agriculture, public services, etc. Therefore, this Special Issue seeks to extend our understanding of blockchain applications in OSCM and how firms create and capture business value with blockchain. To this effect, this Special Issue will provide a well-articulated and in-depth discussion of the role of blockchain in creating value in the domain of OSCM. Specifically, it is expected that more light is shed on how blockchain integrates with and impacts new business models, transforms relationships, and improves performance and competitive advantage in OSCM. Also, the evolution of blockchain was reviewed in order to provide a strong background to the readers. The literature review was performed taking into account a bibliometric perspective of blockchain-related publications. The review supports the importance of this Special Issue by highlighting the urgent needs of this topic in this reputable journal. Finally, we provide future research directions and a guide for the papers presented in this Special Issue.  相似文献   

应用型SAP_ERP供应链实训课程的设计研究     

张春喜  王长春 《科教文汇》2020,(12):126-127

21世纪,顾客消费力量的强大以及制造业多品种、小批量、短周期的生产,共同促进了物流及供应链的发展和变革,ERP与供应链的结合改变了供应链“看不见”以及物流不通畅的问题,极大地加强了供应链在成本、效率、交货期方面的竞争力。应用型ERP供应链体系的研究为企业流程再造、创新培养人才、变革ERP供应链课程培训提供了理论依据。  相似文献   

Large-scale multiferroic complex oxide epitaxy with magnetically switched polarization enabled by solution processing     

Cong Liu  Feng An  Paria S M Gharavi  Qinwen Lu  Junkun Zha  Chao Chen  Liming Wang  Xiaozhi Zhan  Zedong Xu  Yuan Zhang  Ke Qu  Junxiang Yao  Yun Ou  Zhiming Zhao  Xiangli Zhong  Dongwen Zhang  Nagarajan Valanoor  Lang Chen  Tao Zhu  Deyang Chen  Xiaofang Zhai  Peng Gao  Tingting Jia  Shuhong Xie  Gaokuo Zhong  Jiangyu Li 《国家科学评论(英文版)》2020,7(1):84

Complex oxides with tunable structures have many fascinating properties, though high-quality complex oxide epitaxy with precisely controlled composition is still out of reach. Here we have successfully developed solution-based single-crystalline epitaxy for multiferroic (1-x)BiTi_(1-y)/2Fe_yMg_(1-y)/2O₃–(x)CaTiO₃ (BTFM–CTO) solid solution in large area, confirming its ferroelectricity at the atomic scale with strong spontaneous polarization. Careful compositional tuning leads to a bulk magnetization of 0.07 ± 0.035 μ_B/Fe at room temperature, enabling magnetically induced polarization switching exhibiting a large magnetoelectric coefficient of 2.7–3.0 × 10⁻⁷ s/m. This work demonstrates the great potential of solution processing in large-scale complex oxide epitaxy and establishes novel room-temperature magnetoelectric coupling in epitaxial BTFM–CTO film, making it possible to explore a much wider space of composition, phase, and structure that can be easily scaled up for industrial applications.  相似文献   

黄土高原水土保持工程措施的生态系统服务   总被引：1，自引：0，他引：1  

杨磊  冯青郁  陈利顶 《资源科学》2020,42(1):87-95

黄土高原严重的水土流失是黄河泥沙的主要来源。自1950s以来大规模实施的水土保持工程建设是黄土高原水土流失治理的重要举措,在减少入黄泥沙方面做出了巨大贡献。水土保持工程措施通过直接或间接地作用于坡面、沟道的水文过程和物质迁移过程等,改变了水资源和土壤资源的时空分配格局,在土壤保持、粮食供给、水文调节等方面发挥了重要作用,对黄河流域生态安全具有重要贡献。本文系统综述了黄土高原水土保持工程措施的发展演变,阐述了水土保持工程措施对水土过程的作用机制及对关键生态系统服务的贡献,探讨了新形势下黄土高原水土保持工程措施建设面临的问题、挑战。在此基础上提出今后黄土高原水土保持工程措施应加强维护和管理,提升应对极端气候事件和自然灾害的能力,面向国家生态文明建设和区域社会经济发展需求,统筹工程措施与植被措施,进行科学的设计与合理的时空配置,以维护黄土高原及黄河流域生态安全、维持和提升区域生态系统服务功能及社会经济效益。  相似文献   

电子商务环境下企业物流快速反应实现研究   总被引：1，自引：0，他引：1  

白秀艳 《科技管理研究》2010,30(22)

以供应链一体化下的电子商务物流为研究对象,对电子商务物流快速反应的内涵进行界定,总结了电子商务物流快速反应实现的瓶颈问题,针对这些瓶颈问题对电子商务物流快速反应能力的构成、影响因素进行了深入分析,得出制约电子商务物流快速反应能力的主要相关因素,提出电子商务物流快速反应的实现途径,为电子商务企业运作提供决策依据。  相似文献   

产业集群与供应链联盟的耦合发展研究     

连远强 《科技与管理》2010,12(1):1-4

产业集群和供应链联盟是提升一个区域或产业竞争力的两种重要途径。分析了产业集群与供应链联盟的耦合基础与目标,深入探讨了两者具体的耦合内容。研究表明:产业集群能为供应链联盟形成发展提供优越的生态环境,供应链关系是产业集群的基本经济关系,供应链联盟是其运行机制的发展方向。因此,产业集群可通过供应链联盟理念来组织集群中的企业,以提高整个产业集群的竞争优势。  相似文献   

某型发射装置锁制机构的开锁位置误差分析     

杨用斌 《黑龙江科技信息》2010,(14):60-60

通过对某发射装置锁制机构进行原理分析,简化成平面连杆机构,采用复数矢量法建立误差分析方程对其进行位置误差分析,找到影响误差的主要因素,从而采取有效的方法改善设计质量,该方法简单、可行、有效。也可为其它类似机构误差分析提供参考。  相似文献   

博弈互动机理下的低碳农业生态产业链共生耦合机制研究   总被引：3，自引：0，他引：3  

齐振宏  王培成 《中国科技论坛》2010,(11)

低碳农业生态产业链是发展低碳农业的重要载体,如何使农业产业链与生态链进行共生耦合,使经济理性与生态理性统一,有效解决农业发展与资源与环境之间的尖锐矛盾,建立有效的共生耦合机制以解决发展动力不足问题成为关键。本文基于微观视角,采用博弈论囚徒困境模型,分析了低碳农业生态产业链主体间的互动机理,研究了低碳农业生态产业链的共生耦合机制,即资源循环利用机制、生态价值补偿机制和利益合作与风险分享机制;最后以武汉市东西湖发展低碳农业生态产业链为例进行了实证分析。  相似文献