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CPE: A parallel library for financial engineering applications

COMPUTER 2005年第10期38卷 70-+页

作者： Leong, MP Cbeung, CC Cheung, CW Wan, PPM Leung, IKH Yeung, WMM Yuen, WS Chow, KSK Leung, KS Leong, PHW Chinese Univ Hong Kong Hong Kong Hong Kong Peoples R China

To effectively utilize parallel computing, developers need software that reduces the complexity of the process as well as tools to support integration of parallel and desktop machines. The Clustertech parallel environment (CPE) is a C++ library that facilitates development of large-scale parallel applications. This environment offers unprecedented efficiency in developing financial engineering applications and porting them to a wide range of parallel-cluster and symmetric-multiprocessing machines. CPE's object-oriented approach facilitates information hiding as well as code reuse.

关键词： C++ language CPE architecture Clustertech parallel environment Clustertech parallel environment Financial engineering Finite-difference calculation Monte Carlo simulation Parallel computing financial data processing financial engineering application message passing message passing interface multiprocessing machines object-oriented C++ library object-oriented programming parallel cluster parallel library parallel programming parallel programming software libraries

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object-oriented finite element-based design and progressive steel weight minimization

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FINITE ELEMENTS IN ANALYSIS AND DESIGN 2002年第1期39卷 55-76页

作者： Tabatabai, SMR Univ Calif Berkeley Dept Civil Engn Berkeley CA 94720 USA

An object-oriented environment for reinforcement dimensioning of two- and three-dimensional concrete panel structures is suggested and a new finite element design (FED) object is introduced. In the framework of an object-oriented environment for finite element analysis, the FE object commonly providing the stiffness matrix for analysis is extended to the FED object used for design. The FED object provides the finite element yield conditions in terms of the element nodal forces as opposed to conventional yield conditions formulated for stresses at an infinitesimal point. It can be used for any kind of material provided the corresponding resistance values are used in the yield condition. Class definitions and methods for the FED object are defined. Other major design classes to be used in an object-oriented finite element-based design environment of concrete panel structures are presented. Further, a progressive linear programming approach is suggested in which the tableau is progressively expanded to include new optimization variable columns and constraint rows while most of the computation is performed outside of the tableau. This method is applied to the reinforcement minimization. Possibilities of parallelization of the method on a network of workstations are explained. (C) 2002 Elsevier Science B.V. All rights reserved.

关键词： finite element design (FED) object reinforced concrete yield conditions object-oriented programming parallelization linear programming

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Software news and update an object-oriented library for computational protein design

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JOURNAL OF COMPUTATIONAL CHEMISTRY 2007年第14期28卷 2378-2388页

作者： Chowdry, Arnab B. Reynolds, Kimberly A. Hanes, Melinda S. Voorhies, Mark Pokala, Navin Handel, Tracy M. Univ Calif Berkeley Biophys Grad Grp Berkeley CA 94720 USA Univ Calif San Diego Skaags Sch Pharm & Pharmaceut Sci San Diego CA 92103 USA Univ Calif Berkeley Dept Mol & Cellular Biol Berkeley CA 94720 USA

Recent advances in computational protein design have established it as a viable technique for the rational generation of stable protein sequences, novel protein folds, and even enzymatic activity. We present a new and object-oriented library of code, written specifically for protein design applications in C++, called EGAD Library. The modular fashion in which this library is written allows developers to tailor various energy functions and minimizers for a specific purpose. It also allows for the generation of novel protein design applications with a minimal amount of code investment. It is our hope that this will permit labs that have not considered protein design to apply it to their own systems, thereby increasing its potential as a tool in biology. We also present various uses of EGAD Library: in the development of Interaction Viewer, a PyMOL plug-in for viewing interactions between protein residues;in the repacking of protein cores;and in the prediction of protein-protein complex stabilities. (c) 2007 Wiley Periodicals, Inc.

关键词： computational protein design object-oriented programming protein-protein interactions protein stability

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Manufacturing cost modelling for concurrent product development

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ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING 2001年第4期17卷 341-353页

作者： Shehab, EM Abdalla, HS De Montfort Univ Dept Design Management & Commun Leicester LE1 9BH Leics England

This research work aims to develop an intelligent knowledge-based system that accomplishes an environment to assist inexperienced users to estimate the manufacturing cost modelling of a product at the conceptual design stage of the product life cycle. Therefore, a quicker response to customers' expectations is generated. This paper discusses the development process of the proposed system for cost modelling of machining processes. Tt embodies a CAD solid modelling system, user interface, material selection, process/machine selection, and cost estimation techniques. The main function of the system, besides estimating the product cost, is to generate initial process planning includes generation and selection of machining processes, their sequence and their machining parameters. Therefore, the developed system differs from conventional product cost estimating systems, in that it is structured to support concurrent engineering. Manufacturing knowledge is represented by hybrid knowledge representation techniques, such as production rules, frames and object oriented. To handle the uncertainty in cost estimation model that cannot be addressed by traditional analytical methods, a fuzzy logic-based knowledge representation is implemented in the developed system. Based on the analysis of product life cycle, the estimated cost included material, processing, machine set-up and non-productive costs. A case study is discussed and demonstrated to validate the proposed system. (C) 2001 Elsevier Science Ltd. All rights reserved.

关键词： feature-based design concurrent engineering manufacturing cost modelling object-oriented programming process optimisation fuzzy logic

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COMPUTER CARTOGRAPHY FOR GIS - AN object-oriented VIEW ON THE DISPLAY TRANSFORMATION

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COMPUTERS & GEOSCIENCES 1992年第8期18卷 975-987页

作者： FRANK, AU EGENHOFER, MJ UNIV MAINE NATL CTR GEOG INFORMAT & ANAL ORONO ME 04469 USA

Geographic Information Systems (GISs) are widely used tools for the collection, management, and display-or visualization-of many types of data that describe space. Visualization of spatial data has been the domain of expertise of cartographers and elaborate recommendations for best rendering of spatial data exist. Unfortunately, this body of knowledge is not cast yet into a formalization and thus is not accessible immediately for programming GIS software. A particular problem is the description of the rendering parameters for complex spatial objects. This paper presents a method for describing the set of individual geometric objects parts to which different rendering parameters can be assigned. The geometric data model uses the concepts of boundary and interior, and their specializations returning objects of particular dimensions. It is applicable equally to both raster and vector data, and, therefore, a contribution to the integration of vector and taster GIS. The rendering parameters are based upon Bertin's "visual variables." Abbreviated class definitions in C++ are included as a method to describe formally the concepts treated.

关键词： object-oriented programming C++ COMPUTER CARTOGRAPHY VISUAL VARIABLES TOPOLOGY BOUNDARY INTERIOR

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Simulating multiple inheritance and generics in Java

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COMPUTER LANGUAGES 1999年第4期25卷 189-210页

作者： Thirunarayan, K Kniesel, G Hampapuram, H Wright State Univ Dept Comp Sci & Engn Dayton OH 45435 USA Univ Bonn Comp Sci Dept 3 D-53117 Bonn Germany Intrinsa Corp Mountain View CA 94041 USA

This paper presents Java language from an object-oriented software construction perspective. It explains the implications of banning generics and multiple inheritance of classes, and explores the patterns and the idioms used by the Java designers and programmers to redeem their benefits. The paper also discusses an alternative to multiple inheritance, as incorporated in Lava, which extends Java with constructs for type-safe automatic forwarding. (C) 2001 Elsevier Science Ltd. All rights reserved.

关键词： Java language object-oriented programming design patterns multiple inheritance generics delegation

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Next in Mashup Development: User-Created Apps on the Web

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IT PROFESSIONAL 2011年第5期13卷 22-29页

作者： Daniel, Florian Matera, Maristella Weiss, Michael Univ Trento Trento Italy Politecn Milan Milan Italy Carleton Univ Dept Syst & Comp Engn Ottawa ON K1S 5B6 Canada

Mashups have relatively simple, component-based development paradigms, yet few end users develop their own applications. To help turn end users into developers and innovators, the authors present two mashup platforms ... 详细信息

关键词： Google Internet Keywords: Web applications Mashups Service oriented architecture Technological innovation User interfaces Web design Web development practices Web sites component-based development paradigms information technology mashup development mashups object-oriented programming software development management user innovation

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Design-code traceability recovery: selecting the basic linkage properties

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SCIENCE OF COMPUTER programming 2001年第2-3期40卷 213-234页

作者： Antoniol, G Caprile, B Potrich, A Tonella, P ITC Irst Ctr Ric Sci & Tecnol I-38050 Trento Italy

Traceability ensures that software artifacts of subsequent phases of the development cycle are consistent. Few works have so far addressed the problem of automatically recovering traceability links between object-oriented (OO) design and code entities. Such a recovery process is required whenever there is no explicit support of traceability from the development process. The recovered information can drive the evolution of the available design so that it corresponds to the code, thus providing a still useful and updated high-level view of the system. Automatic recovery of traceability links can be achieved by determining the similarity of paired elements from design and code. The choice of the properties involved in the similarity computation is crucial for the success of the recovery process. In fact, design and code objects are complex artifacts with several properties attached. The basic anchors of the recovered traceability links should be chosen as those properties (or property combinations) which are expected to be maintained during the transformation of design into code. This may depend on specific practices and/or the development environment, which should therefore be properly accounted for. In this paper different categories of basic properties of design and code entities will be analyzed with respect to the contribution they give to traceability recovery. Several industrial software components will be employed as a benchmark on which the performances of the alternatives are measured. (C) 2001 Elsevier Science B.V. All rights reserved.

关键词： traceability object-oriented programming software evolution program understanding software maintenance

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An object-oriented approach to numerical methods:: the Regula Falsi method for solving equations with tight tolerances for environmental applications

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JOURNAL OF HAZARDOUS MATERIALS 1998年第2-3期63卷 145-162页

作者： Phillips, JB Price, G Fry, S Arcziscewski, T DeMonsabert, S Menawat, AS Engn Dev Inst Tucson AZ 85704 USA

The Regula Falsi method for numerical solution of a system of algebraic equations containing a single equation and a single unknown is implemented with an object-oriented methodology. The method is applied to the solution of equations predicting atmospheric emissions from combustion point sources. Two physical approaches are taken in modeling the combustion phenomenon: a kinetic approach and an equilibrium approach. Emissions from the kinetic approach are found to be significantly smaller than those from the equilibrium approach, indicating marked potential for overall industrial emissions reduction through improvements in the design of burners for boilers, incinerators, and furnaces. The object-oriented methodology displays significant benefits in terms of modularity, code reuse, and future upgrades. (C) 1998 Published by Elsevier Science B.V. Ail rights reserved.

关键词： numerical methods air emissions object-oriented programming Regula Falsi method Phillips number combustion reaction kinetics chemical equilibrium

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Enhancing topology optimization with colored body-fitted mesh using adaptive filter, dual re-meshing strategy, and OOP programming paradigm

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COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 2024年 432卷

作者： Zhuang, Zicheng Liu, Tong Tong, Wei Xu, Fengming Weng, Yiwei Hong Kong Polytech Univ Dept Bldg & Real Estate Hong Kong Peoples R China

This study introduces a novel topology optimization approach by employing power law-based material interpolation and adaptive filtering in the framework of the unstructured grids. As an extension of the established Solid Isotropic Material with Penalization (SIMP) method that utilizes the fixed structured mesh, the proposed Colored Body-Fitted Optimization (CBFO) method adopts the body-fitted grids to enhance efficiency, accuracy, and adaptability for diverse engineering applications. Notably, incorporating body-fitted meshes with intermediate density profiles enables improved flexibility in the numerical simulations and eliminates the need for re-meshing in each iteration. The dual re-meshing strategy drastically reduces computational costs, with only two re-meshing procedures required throughout the optimization process. This approach facilitates the generation of dense mesh regions around critical boundaries to augment solution accuracy while enabling sparse mesh configurations in the low-sensitivity regions, thereby boosting computational efficiency without compromising performance. The effectiveness, robustness, and efficiency of the CBFO method are validated through testing on multiple standard minimum compliance and compliant mechanism problems. The proposed optimization method can converge in dozens of iterations, obtain better objective function values, and save computational costs by up to 69 % compared to the previous method using the body-fitted mesh. Additionally, a concise MATLAB script implementing the proposed method using an object-oriented programming (OOP) paradigm is provided in the appendix and the supplementary material, complete with annotations.

关键词： Topology optimization Colored body-fitted mesh Adaptive filter SIMP method object-oriented programming

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