14,348 research outputs found

    Development Trends and Economic Assessment of the Integration Processes on the Metals Market

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    In the present paper, reasons for the increased interest in industrial policy in both developed and developing countries are explained. The systematisation of the results of the development of Russian industry from 1989 to 2014 showed a lack of systematic selection of its priorities, preventing the formation of a strategic vector of industrial policy. The target diversity of the industrial policy is established at the different economic development stages of the country. In the context of economic sanctions against Russia, it is shown that the emergence of a new industrial policy vector is connected to the need for import substitution and concomitant changes in the development model of the domestic economy. The dynamics and characteristics of the industrial development area are shown by the example of a highly developed region like the Central Urals. The total level of organisational innovation activity continues to be low and composes only 12%, although in the manufacturing sector this index is higher than the regional economy index by four absolute percentage points. The industrial policy of the Central Urals is analysed and innovation drivers of the industrial sector of the regional economy are established. The possibilities of the defence, civil engineering, mining, chemical/pharmaceutical and forestry complexes of the Sverdlovsk Region to implement its import substitution policy are explained. The most significant investment projects that will reduce the import dependence of the regional economy are presented. The possibilities of the research sector and created innovation infrastructure of the region in solving this problem are shown. It is necessary to develop the regional laws on the elaboration of industrial policy according to the basic regulations of the Federal Law โ€œOn Industrial Policy in the Russian Federation.โ€This article was prepared with support of the Grant of the Russian Foundation for Humanities No. 14-32-01030

    Identifying Optimal Granularity Level of Modular Assembly Supply Chains based on Complexity-Modularity Trade-off

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    JIDT: An information-theoretic toolkit for studying the dynamics of complex systems

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    Complex systems are increasingly being viewed as distributed information processing systems, particularly in the domains of computational neuroscience, bioinformatics and Artificial Life. This trend has resulted in a strong uptake in the use of (Shannon) information-theoretic measures to analyse the dynamics of complex systems in these fields. We introduce the Java Information Dynamics Toolkit (JIDT): a Google code project which provides a standalone, (GNU GPL v3 licensed) open-source code implementation for empirical estimation of information-theoretic measures from time-series data. While the toolkit provides classic information-theoretic measures (e.g. entropy, mutual information, conditional mutual information), it ultimately focusses on implementing higher-level measures for information dynamics. That is, JIDT focusses on quantifying information storage, transfer and modification, and the dynamics of these operations in space and time. For this purpose, it includes implementations of the transfer entropy and active information storage, their multivariate extensions and local or pointwise variants. JIDT provides implementations for both discrete and continuous-valued data for each measure, including various types of estimator for continuous data (e.g. Gaussian, box-kernel and Kraskov-Stoegbauer-Grassberger) which can be swapped at run-time due to Java's object-oriented polymorphism. Furthermore, while written in Java, the toolkit can be used directly in MATLAB, GNU Octave, Python and other environments. We present the principles behind the code design, and provide several examples to guide users.Comment: 37 pages, 4 figure

    Information dynamics: patterns of expectation and surprise in the perception of music

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    This is a postprint of an article submitted for consideration in Connection Science ยฉ 2009 [copyright Taylor & Francis]; Connection Science is available online at:http://www.tandfonline.com/openurl?genre=article&issn=0954-0091&volume=21&issue=2-3&spage=8

    A note on maximum likelihood estimation of a Pareto mixture

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    In this paper we study Maximum Likelihood Estimation of the parameters of a Pareto mixture. Application of standard techniques to a mixture of Pareto is problematic. For this reason we develop two alternative algorithms. The first one is the Simulated Annealing and the second one is based on Cross-Entropy minimization. The Pareto distribution is a commonly used model for heavy-tailed data. It is a two-parameter distribution whose shape parameter determines the degree of heaviness of the tail, so that it can be adapted to data with different features. This work is motivated by an application in the operational risk measurement field: we fit a Pareto mixture to operational losses recorded by a bank in two different business lines. Losses below an unknown threshold are discarded, so that the observed data are truncated. The thresholds used in the two business lines are unknown. Thus, under the assumption that each population follows a Pareto distribution, the appropriate model is a mixture of Pareto where all the parameters have to be estimated.

    ์‹œ์Šคํ…œ ์•„ํ‚คํ…์ณ ๊ฐ•๊ฑด์„ฑ ๋ฐ ํ˜„์—… ์—”์ง€๋‹ˆ์–ด ์ผ๊ด€์„ฑ ํ‰๊ฐ€๋ฅผ ์œ„ํ•œ ์—”ํŠธ๋กœํ”ผ ๊ธฐ๋ฐ˜ ์ธก์ •๋ฒ•: ๊ณต์‹ํ™” ๋ฐ ์‘์šฉ

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    ํ•™์œ„๋…ผ๋ฌธ (์„์‚ฌ)-- ์„œ์šธ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› : ๊ณต๊ณผ๋Œ€ํ•™ ์‚ฐ์—…๊ณตํ•™๊ณผ, 2019. 2. ์„œ์€์„.๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ์‹œ์Šคํ…œ ์•„ํ‚คํ…์ณ ์„ค๊ณ„ ๋‹จ๊ณ„์—์„œ ๋‹ค์–‘ํ•œ ์ดํ•ด๊ด€๊ณ„์ž ๊ด€์ ์— ๊ฐ•๊ฑดํ•œ ์•„ํ‚คํ…์ณ๋ฅผ ์‹๋ณ„ํ•˜๋Š” ์ •๋Ÿ‰์  ๋ฉ”ํŠธ๋ฆญ์„ ์—ฐ๊ตฌํ•˜๋Š” ๊ฒƒ์„ ๋ชฉํ‘œ๋กœ ํ•œ๋‹ค. ๋ณต์žก๋„๊ฐ€ ๋†’์€ ์‹œ์Šคํ…œ ์•„ํ‚คํ…์ณ์˜ ๊ฐœ๋ฐœ ๊ณผ์ •์—์„œ๋Š” ๊ณ ๊ฐ ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ์ „์ฒด ์ˆ˜๋ช…์ฃผ๊ธฐ์˜ ์ดํ•ด๊ด€๊ณ„์ž์˜ ์š”๊ตฌ ์‚ฌํ•ญ์„ ๊ฐ์•ˆํ•˜์—ฌ ์„ค๊ณ„ํ•ด์•ผ ํ•œ๋‹ค. ๊ธฐ์ˆ ์˜ ๋ฐœ์ „๊ณผ ์†Œ๋น„์ž์˜ ์š”๊ตฌ ์‚ฌํ•ญ์— ๋”ฐ๋ผ์„œ ๊ฐœ๋ฐœ๋˜๋Š” ์‹œ์Šคํ…œ์˜ ๋ณต์žก๋„์™€ ์ˆ˜๋ช…์ฃผ๊ธฐ๊ฐ€ ์ง€์†์ ์œผ๋กœ ์ฆ๊ฐ€ํ•จ์— ๋”ฐ๋ผ์„œ ์‹œ์Šคํ…œ์˜ ์ „๋ฐ˜์ ์ธ ๊ฐœ๋ฐœ, ์ƒ์‚ฐ, ์šด์šฉ/์œ ์ง€๋ณด์ˆ˜ ๋“ฑ ์ „ ๋‹จ๊ณ„์˜ ๊ด€์ ์„ ์‹œ์Šคํ…œ ๊ธฐ๋ณธ ์„ค๊ณ„ ๋‹จ๊ณ„์—์„œ ๋ฏธ๋ฆฌ ๋ฐ˜์˜ ๋ฐ ์ˆ˜์šฉ์„ ํ•˜๋Š” ํ•„์š”์„ฑ์ด ๋Œ€๋‘๋˜๊ณ  ์žˆ๋‹ค. ์ด์™€ ๊ฐ™์€ ์กฐ์ง์ , ๊ธฐ์ˆ ์ ์ธ ๋ฌธ์ œ๋ฅผ ํ•ด์†Œํ•˜๋Š” ๊ด€์ ์ด ์–ด๋–ป๊ฒŒ ์ฐจ์ด๊ฐ€ ๋‚˜๋Š”์ง€ ์ •๋Ÿ‰์ ์ธ ํ‰๊ฐ€์˜ ์ค‘์š”์„ฑ์ด ๋ถ€๊ฐ๋œ๋‹ค. ํ†ต๊ณ„์—ญํ•™์˜ ์—”ํŠธ๋กœํ”ผ ๊ธฐ๋ฐ˜ ๋ฉ”ํŠธ๋ฆญ์„ ๊ฐœ๋ฐœํ•˜์—ฌ ์‹œ์Šคํ…œ ๋ถ„ํ•ด ๊ด€์ ์— ๋Œ€ํ•œ ๋น„๊ต๋ฅผ ์ •๋Ÿ‰ํ™”ํ•œ๋‹ค. ๊ฐœ๋ฐœํ•œ ๋ฉ”ํŠธ๋ฆญ์œผ๋กœ ๋‘ ๊ฐ€์ง€ ์‚ฌ๋ก€์—ฐ๊ตฌ๋ฅผ ํ†ตํ•ด์„œ ๋‹ค์–‘ํ•œ ๊ด€์ ์— ๊ฐ•๊ฑดํ•œ ์‹œ์Šคํ…œ ์•„ํ‚คํ…์ณ๋ฅผ ํ‰๊ฐ€, ๋ฐ ์ „๋ฌธ๊ฐ€์˜ ์‹œ์Šคํ…œ ๋ถ„ํ•ด์˜ ์ผ๊ด€์„ฑ์„ ํ‰๊ฐ€ํ•˜๋Š” ๊ณผ์ •์„ ๊ฑฐ์ณ์„œ ์ œ์‹œ๋œ ๋ฉ”ํŠธ๋ฆญ์˜ ์‹ค์šฉ์„ฑ์„ ๋ถ„์„ํ•˜์˜€๋‹ค. ์ด๋ฅผ ํ†ตํ•ด์„œ ๊ด€์ ์˜ ์ฐจ์ด๊ฐ€ ์ž‘๊ฒŒ ๋‚˜๋Š” ์•„ํ‚คํ…์ณ์˜ ๊ฐœ๋ฐœ์— ๊ธฐ์—ฌ๋ฅผ ํ•˜๋Š” ๋ฐ์— ๋ชฉ์ ์„ ๋‘”๋‹ค.This thesis proposes an entropy-based metric which quantifies complex system architecture robustness to different decomposition perspectives for resolving varying stakeholders architectural preferences during the critical stages of the system architecting process. The newly developed metric aims to identify architectures that are robust to different decomposition perspectives by quantifying pairwise comparisons between two different architectural decompositions that may arise from the system architecting process. While system architects typically rely on decomposing a system into its constituent functions and subfunctions, the architecture of a complex system may be interpreted differently by various stakeholders throughout the value chain, which can result in several different system decomposition perspectives, including, but not limited to, assembly or maintenance-based decomposition preferences. As such, the various modular configurations should be quantitatively assessed for the development of an architecture that is robust for different perspectives. The newly proposed module diffusion index adapts entropy, a statistical mechanics concept, to quantify the level of re-arrangement that is required for a modules components to be reassigned to another decomposition perspective as a means of assessing an architectures robustness to different stakeholder requirements. Two feasibility studies were conducted to observe how the newly proposed metric evaluates decomposition perspectives of three different architectures to find a perspective-robust architecture, and to assess the consistency at which industry professionals decompose a given architecture to different perspectives. The proposed metric aims to assist system architects as a quantitative evaluation criterion for analyzing different system architecture concepts during the early engineering phases of complex system design.Abstract ii Contents iv List of Tables vi List of Figures vii Chapter 1 Introduction 1 Chapter 2 Literature Review 5 2.1 System Architecture Development and Selection 5 2.2 Decomposition Perspectives of System Architecture 7 2.3 Quantitative System Architecture Assessment 9 2.4 Research Gap Analysis 10 Chapter 3 Entropy-based Metric Development 12 3.1 Metric Development Overview and Background 12 3.2 Module Diffusion Index Formulation 14 Chapter 4 Case Study: System Architecture Robustness Assessment for Different Stakeholder Perspectives 19 4.1 Introduction 19 4.2 Clock Architecture Overview 21 4.3 Stakeholders Decomposition Perspectives 23 4.4 Case Study Results 27 4.5 Case Study Discussion and Summary 32 Chapter 5 Case Study: Expert Evaluation for Decomposition Consistency 35 5.1 Introduction 35 5.2 Case Study Results 38 5.3 Case Study Discussion and Summary 40 Chapter 6 Conclusions and Directions for Future Work 43 6.1 Conclusions 43 6.2 Directions for Future Work 44 Bibliography 47 Appendix A: Bill of Materials for VFEC Architecture 53 Appendix B: Bill of Materials for FPC Architecture 58 Appendix C: Bill of Materials for CSC Architecture 62 Appendix D: DSM for for CSC Architecture 67 Appendix E: DSM for CSC Architecture 68 Appendix F: DSM for CSC Architecture 69 ๊ตญ๋ฌธ์ดˆ๋ก 70Maste
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