The theoretical rationale for a multinationality-performance relationship

Abstract and Key Results

Multi-structure information retrieval method based on transformation invariance

The needs of efficient and flexible information retrieval on multi-structural data stored in database and network are significantly growing. Especially, its flexibility plays one of the key roles to acquire relevant information desired by users in retrieval process. However, most of the existing approaches are dedicated to a single content and data structure respectively, e.g., relational database and natural text. In this work, we propose “Multi-Structure Information Retrieval” (MSIR) approach applicable to various types of contents and data structures by adapting a small part of the approach to data structures. The power of this approach comes from the use of the invariant feature information obtained from byte patterns in the files through some mathematical transformation. The experimental evaluation of the proposed approach for both artificial and real data indicates its high feasibility. Fuminori Adachi: He received his Master of engineering from Osaka University in ’03. He is enrolled in the doctoral course of Osaka University from ’03. His current research interest includes scientific discovery, data mining and machine learning techniques. Takashi Washio, Ph.D.: He received his Ph.D. from Tohoku University in ’88. In ’88, he became a visiting reseacher in Massachusetts Institute of Technology. In ’90, he joined Mitsubishi Research Institute Inc., and is working for Osaka University from ’96. His current research interest includes scientific discovery, data mining and machine learning techniques. Atsushi Fujimoto: He is enrolled in the master cource of Osaka University from ’03. His Current research interest includes correlation analysis, data mining and machine learning techniques. Hiroshi Motoda, Ph.D.: He received his Ph.D. from University of Tokyo in ’72. In ’67, he joined Hitachi Ltd. and has been working for Osaka University since ’96. His current research interest includes scientific discovery, data mining and machine learning. Hidemitsu Hanafusa: He received Master of Engineering from Keio University in ’83. In ’83, he joined The Kansai Electric Power Co. Ins. (KEPCO). He researched on Maintenance Support System at INSS from ’97 to ’02. Now, he is working in KEPCO.     

柔性不饱和聚酯树脂的研究进展

综述了主链结构、接枝引入柔性链段、交联剂对柔性不饱和聚酯树脂（UPR）性能的影响和进一步提高UPR柔韧性的一些途径，如弹性体增韧、无机物增韧、互穿网络（IPN）增韧，并对柔性UPR的发展趋势进行了预测。     

技术改造提高加氢试验装置的灵活性

介绍了加氢试验评价装置在加氢技术研发过程中的重要性,结合现有试验装置的现状及存在的问题,提出针对性的改造方案并加以实施,通过催化汽油加氢精制、重汽油加氢精制及蜡油加氢裂化试验,结合长周期试验结果,验证了装置改造的效果,试验结果表明:通过对尾气排放方式等方面进行改造,装置功能得以提升,不仅可以满足在低压、低氢气流量下加氢试验的要求,同时提高了装置长周期运转的可靠性,此外,装置的灵活性得到大幅提升。根据试验装置实际情况,结合科研工作的需要,对试验装置存在问题进行认真分析,大胆改造,可以更好地服务于科研。     

Top-gate organic field-effect transistors fabricated on paper with high operational stability

We report on top-gate organic field-effect transistors (OFETs) fabricated on specialty paper, PowerCoat™ HD 230 from Arjowiggins Creative Papers coated with a buffer layer composed of a polyvinyl alcohol (PVA) and polyvinylpyrrolidine (PVP) blend. OFETs operate at low voltages and display average carrier mobility values of 1.7 ± 1.1 × 10⁻¹ cm²/Vs, average threshold voltage values of −1.4 ± 0.2 V, and average on/off current ratio of 10⁵. OFETs also display excellent operational stability demonstrated by stable 1000 scans of the transfer characteristics and by stable on-currents displaying less than 6% change during a DC bias stress test at V_DS = V_GS = −10 V for 1 h. Furthermore, OFETs on paper display a decrease of only 7% in their on-state current during a bending test. The performance of these OFETs on paper is comparable to that displayed by top-gate OFETs with the same geometry fabricated on glass substrates.     

Organizing a virtual manufacturing enterprise: an analytic network process based approach for enterprise flexibility

Virtual manufacturing is a dynamic enterprise structure that will enable future competitiveness in the fast changing business environment. This is made possible through quick IT based integration of flexible and core competent business entities capable of providing value-added product and services. Flexibility elements represent change capabilities of enterprise wide processes and resources in time and cost dimensions. Value chain considerations require synergy among the participating flexible resources. Also decision information synchronization delays need to be managed so that other entity flow processes in the enterprise remain well synchronized. This may require a capability of dynamic changes in flexible structures leading to effective virtual enterprises. There is a need to develop suitable enterprise architectures for virtual enterprises that offer an increasing focus on agility. Infrastructure support for integration of flexible capability to attain synergy among resources is necessary for enterprise agility. We conceptualize virtual manufacturing (VM) as an integrating infrastructure of flexible resources made possible through alliance of enterprises that are individually core competent in specific business function. Such a VM can attain the required cost, flexibility and responsiveness characteristics in its operations to provide solution to the demanding customer in a global dynamic market. Modelling frameworks depicting these composite flexibility states have complex and tacit interrelationship with plural business goals. Analytical network process (ANP) has been used to model the interrelationship of different decision domains with a view to prioritize enterprise wide flexibility dimensions. The ANP modelling framework takes into consideration the interdependency among sub-strategies. We demonstrate through sensitivity analysis that strategic shift is required to accommodate changes due to dynamic condition in the business environment.     

Oscillator analogy for modelling the manufacturing systems dynamics

The purpose of this paper is to present an approach of modelling and analysis of the dynamic behaviour of manufacturing systems. The manufacturing system is considered to be responding to an excitation, namely a demand that varies over time, by producing a number of parts over time. This resembles a mechanical system that displaces its mass responding to a varying input force. Based on this analogy, this paper establishes a manufacturing system's modelling method. A system identification technique is used for deriving inertia, damping and stiffness from the manufacturing system's response to different excitations. Based on these attributes, the response of a manufacturing system to any given input can be estimated. Furthermore, a definition for assessing manufacturing flexibility, based on this approach, is being discussed.     

可重组柔性装配系统发展现状与系统实例

本文介绍了近年来自动装配系统在物流优化、可重组性方面的一些重要进展。以在生产中取得良好效果的日本索尼公司 Ｓ Ｍ Ａ Ｒ Ｔ 柔性装配系统为对象,介绍了具有通用性的零件整列供料装置 Ａ Ｐ Ｏ Ｓ和自动托盘供给装置 Ａ Ｔ Ｃ及机器人装配单元 Ｓ Ｍ Ａ Ｒ Ｔ Ｃ Ｅ Ｌ Ｌ。这些装置和装配单元相结合,提高了装配系统的可重组性。     

空间灵动性设计的特点与方法

本文通过分析灵动性设计特点对空间的影响,指出可变性空间形式与多样化需求的统一性。进而对空间灵动性设计作进一步的概念阐述,提出第四维度空间设计理念,同时在此基础上对相关案例进行探究,从横向与竖向两个维度阐述空间灵动性设计方法,以为解决人与空间之间不断凸显的矛盾提供新的视角。     

基于弹性理念的物流园空间规划布局方法探讨

物流园的发展是一个动态过程,需具备一定弹性以适应市场的发展。柳州市河西物流园空间规划在空间布局上采用空间生成模型,在地块控制上采用弹性划分方式。同时,使用按需设计的单元设计思路,形成了"一心、两轴、两带、四片、多组团"的空间结构,通过规划各层面的策略对空间规划的实施进行督促和引导,促进规划弹性的实现。