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Approximation Space of Generalization and Rough Classification Algebra

Liu Yonghong

Strategic Study of CAE 2006, Volume 8, Issue 3, Pages 39-48

Abstract:

Some new basic concepts are proposed in this paper, including the approximation space of generalization, rough approximation axiom, disturbance set axiom, classification principle of rough set, principleclassification, quantum logic classification, bit quantum symmetric classification, incomparable set, bit space

Keywords： approximation space of generalization rough set rough classification algebra protocol relation rough

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A case study on sample average approximation method for stochastic supply chain network design problem

Yuan WANG, Ruyan SHOU, Loo Hay LEE, Ek Peng CHEW

Frontiers of Engineering Management 2017, Volume 4, Issue 3, Pages 338-347 doi: 10.15302/J-FEM-2017032

Abstract: Deterministic equivalent model with nonanticipativity constraints, branch-and-fix coordination, sample average approximation

Keywords： supply chain network stochastic demand sampling average approximation Bayesian bootstrap Latin hypercube

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Generalization and application in time series forecasting of the least square support vector machine

Xiang Xiaodong

Strategic Study of CAE 2008, Volume 10, Issue 11, Pages 89-92

Abstract:

According to the theory that the present data contains more future information than historical data in time-series,the paper extends the prediction method of least square support vector machine and obtains a more general prediction model of least square support vector machine,and develops algorithm of the extended prediction model.Prediction examples of two time-series show that the extended model is more effective.Therefore it improves the value of the prediction method of least square support vector machine.

Keywords： least square support vector machine generalization time series forecasting

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Shape reconstruction of parallelogram flaw

ZHENG Gangfeng, WU Bin, HE Cunfu

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1, Pages 17-22 doi: 10.1007/s11465-008-0015-4

Abstract: To reconstruct the shape of the scatterer in elastic media, the authors deduce the Born approximationidentification of the geometrical character of a flaw is then given by the two dimensional inverse Born approximation

Keywords： approximation scatterer scattering problem information inverse

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Galerkin approximationwith Legendre polynomials for a continuous-time nonlinear optimal control problem Article

Xue-song CHEN

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 10, Pages 1479-1487 doi: 10.1631/FITEE.1601101

Abstract: We investigate the use of an approximation method for obtaining near-optimal solutions to a kind of nonlinearThe approach derived from the Galerkin approximation is used to solve the generalized Hamilton-Jacobi-BellmanThe Galerkin approximation with Legendre polynomials (GALP) for GHJB equations has not been applied to

Keywords： Generalized Hamilton-Jacobi-Bellman equation Nonlinear optimal control Galerkin approximation Legendre

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Meeting deadlines for approximation processing in MapReduce environments Article

Ming-hao HU, Chang-jian WANG, Yu-xing PENG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 11, Pages 1754-1772 doi: 10.1631/FITEE.1601056

Abstract: To provide timely results for big data analytics, it is crucial to satisfy deadline requirements for MapReduce jobs in today’s production environments. Much effort has been devoted to the problem of meeting deadlines, and typically there exist two kinds of solutions. The first is to allocate appropriate resources to complete the entire job before the specified time limit, where missed deadlines result because of tight deadline constraints or lack of resources; the second is to run a pre-constructed sample based on deadline constraints, which can satisfy the time requirement but fail to maximize the volumes of processed data. In this paper, we propose a deadline-oriented task scheduling approach, named ‘Dart’, to address the above problem. Given a specified deadline and restricted resources, Dart uses an iterative estimation method, which is based on both historical data and job running status to precisely estimate the real-time job completion time. Based on the estimated time, Dart uses an approach–revise algorithm to make dynamic scheduling decisions for meeting deadlines while maximizing the amount of processed data and mitigating stragglers. Dart also efficiently handles task failures and data skew, protecting its performance from being harmed. We have validated our approach using workloads from OpenCloud and Facebook on a cluster of 64 virtual machines. The results show that Dart can not only effectively meet the deadline but also process near-maximum volumes of data even with tight deadlines and limited resources.

Keywords： MapReduce Approximation jobs Deadline Task scheduling Straggler mitigation

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The “Tiangong” Chinese Space Station project

Yang HONG

Frontiers of Engineering Management 2018, Volume 5, Issue 2, Pages 278-283 doi: 10.15302/J-FEM-2018202

Keywords： manned space station space station project basic design

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Development of a seismic design method based on response spectra for building structures

ZHOU Xiyuan, YU Ruifang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2, Pages 129-141 doi: 10.1007/s11709-007-0014-2

Abstract: countries; 3) the complex complete quadratic combination with three components (CCQC3) method, which is a generalization

Keywords： generalization classical damping mode-superposition response calculation formula damping theory

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Application and development of modern long-span space structures in China

Shilin DONG, Yang ZHAO, Dong XING

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3, Pages 224-239 doi: 10.1007/s11709-012-0166-6

Abstract: Modern long-span space structures, developed during the 1970s and 1980s, are light and effective structuresFor the premodern space structures widely used since the mid-twentieth century (such as thin shells,space trusses, lattice shells and ordinary cable structures), new space structures have been developedstructures, including composite space trusses, open-web grid structures, polyhedron space frame structuresstructures, modern flexible space structures and modern rigid-flexible combined space structures.

Keywords： modern long-span space structures rigid space structures flexible space structures rigid-flexible combinedspace structures application and development

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Coordinated Development of Space Science, Space Technology, and Space Application in China

Zhou Jianping, Wu Ji

Strategic Study of CAE 2023, Volume 25, Issue 2, Pages 59-66 doi: 10.15302/J-SSCAE-2023.02.007

Abstract: historical reasons and investment restrictions, China’s aerospace industry initially focused on spacetechnology and application, with insufficient emphasis on space science; therefore, space science The development of space technology should be deeply integrated into space science and applicationThis study explores the implications of space science, space technology, and space application andworldwide and reviews the development situation of space-related fields in China.

Keywords： aerospace industry space science space technology space application coordinated development sharingof space data

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Exploration and research of space physics and space weather

Wang Chi

Strategic Study of CAE 2008, Volume 10, Issue 6, Pages 41-45

Abstract:

Space physics is a fast-growing cross-discipline science with the advanceSpace environment is becoming more and more important as the fourth living environment for human beingStarting from the early 1990s, space weather is born by applying the fundamentals of space physics toon our high-tech systems on the earth and in space.physics and space weather exploration and study, and introduces the suggested space physics and space

Keywords： space physics space weather space physics exploration strategic plan

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Research Status and Future Development of Deep Space Security

Wu Ke, Zhang Zhe, Yang Wenfei, He Jianfeng, Zhang Tianzhu, Jian Kangkang, Wu Weiren

Strategic Study of CAE 2022, Volume 24, Issue 4, Pages 240-248 doi: 10.15302/J-SSCAE-2022.04.023

Abstract: of four key deep space security issues: space radiation threat, planetary protection, space heritage, deep-space activities, and deep-space environmental threats.Deep-space security focuses on the four key issues, namely space radiation, planetary protection, spacespan>): (1) Deep-space resources include deep-space assets such as deep-space probes, Earth–moonthreat to the space activities of astronauts and the safe operation of space equipment in deep-space

Keywords： deep space security space radiation threat planetary protection space heritage protection space legislation

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Approximation of structural damping and input excitation force

Mohammad SALAVATI

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2, Pages 244-254 doi: 10.1007/s11709-016-0371-9

Abstract: In this paper model-based damping approximation method and a model-less structural input estimation areConsequently, high convergence of the comparison results illustrates the satisfactory of proposed approximation

Keywords： structural modal parameters damping identification method input excitation force identification Inverse problem

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Fabrication of bimetallic Cu–Zn adsorbents with high dispersion by using confined space for gas adsorptive

Frontiers of Chemical Science and Engineering Pages 1623-1631 doi: 10.1007/s11705-022-2202-y

Abstract: Here, we report a simple but efficient strategy for dispersing active components by using a confined spaceSuch a confined space does not exist in the conventional support, calcined SBA-15, which does not containThe Cu and Zn precursors were introduced to the confined space in the AS and were converted to CuO andConfined space in the AS and the strong interactions caused by the abundant hydroxyl groups are responsible

Keywords： bimetallic adsorbents confined space mesoporous silica propene/propane separation

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3D interpolation-approximation fitting construction method for complex geological surfaces

Li Mingchao,Miao Zhengjian,Liu Fei,Wang Gang

Strategic Study of CAE 2011, Volume 13, Issue 12, Pages 103-107

Abstract: An approach of complex geological surface reconstruction which combines interpolation with approximationFor the discrete data in the peripheral region, NURBS approximation fitting method is used to construct

Keywords： geological surface interpolation-approximation fitting 3D construction multi-source geological data