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international conference on Networked Computing (INC)

作者： Ramin Shirvani Nasser Modiri Computer Engineering group Islamic Azad University of Tehran-North Tehran Iran Computer Engineering group PayamNoor University Tehran Iran

Today, many computers are using to manage many applications, like management of bank accounts, to keep medical records, etc. With the progress of computer science and become more complicated, the amount of threats and risks is also increased strongly and attacks in this area have also been complicated and advanced. Today, with this huge amount of vast and complicated threats and attacks on computer systems, security has very important place, because at any moment the amount of threats and attacks in this area is added and these risks in some cases will have to follow heavy and irreparable damages. In the world of computer, software security is one of the important issues all the time. We are insensitive about the threats to the software that we design most of the time and consider security as a solution after the completion of design and constructing programs. In fact, to avoid creating security problems and deal with security threats and attacks properly we must be prevented about fragmented and temporary activities and our activities should have an appropriate structured process and be raised on a specific standard form in this regard. the important point here is if software should have a secure entity, this only is possible by having a secure architecture. there are various techniques that help to develop secure architecture and software systems. these techniques block hackers' ways to attack the applications. this paper tries to clarify the position and importance of software architecture in order to create secure software systems. Also in this article the role of software architecture in order to provide permanent security for software systems, has been described.

关键词： Security Computer architecture Software architecture Software systems Computers programming

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Autonomous Search in Constraint Satisfaction via Black Hole: A Performance Evaluation Using Different Choice Functions

Autonomous Search in Constraint Satisfaction via Black Hole:...

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7th international conference on Swarm Intelligence (ICSI)

作者： Soto, Ricardo Crawford, Broderick Olivares, Rodrigo Niklander, Stefanie Olguin, Eduardo Pontificia Univ Catolica Valparaiso Valparaiso Chile Univ Valparaiso Valparaiso Chile Univ Adolfo Ibanez Vina Del Mar Chile Univ Autonoma Chile Santiago Chile Univ Cient Sur Lima Peru Univ San Sebastian Santiago Chile

ISBN: (纸本)9783319410005;9783319409993

Autonomous Search is a modern technique aimed at introducing self-adjusting features to problem-solvers. In the context of constraint satisfaction, the idea is to let the solver engine to autonomously replace its solving strategies by more promising ones when poor performances are identified. the replacement is controlled by a choice function, which takes decisions based on information collected during solving time. However, the design of choice functions can be done in very different ways, leading of course to very different resolution processes. In this paper, we present a performance evaluation of 16 rigorously designed choice functions. Our goal is to provide new and interesting knowledge about the behavior of such functions in autonomous search architectures. To this end, we employ a set of well-known benchmarks that share general features that may be present on most constraint satisfaction and optimization problems. We believe this information will be useful in order to design better autonomous search systems for constraint satisfaction.

关键词： Autonomous Search Constraint programming Constraint satisfaction Optimization Choice functions

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Structure dynamics control-based integration of aggregate distribution and dynamic transportation planning

Structure dynamics control-based integration of aggregate di...

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7th IFAC conference on Manufacturing Modelling, Management, and Control, MIM 2013

作者： Ivanov, Dmitry Sokolov, Boris Hartl, Richard Pavlov, Alexander Berlin School of Economics and Law Department of Business Administration International Supply Chain Management 10825 Berlin Germany V.O. 14 line 39 199178 St.-Petersburg Russia University of Vienna Production and Operations Management Bruenner Strasse 72 A-1210 Vienna Austria

ISBN: (纸本)9783902823359

We study dynamic planning decisions of a logistics service provider that in charge of the integrated supply chain (SC) planning. We examine an SC with multiple products, suppliers, transit nodes, and customers. the logistics service provider is responsible for aggregate distribution planning and operative dynamic transportation planning. It is to decide on aggregate distribution flows as well as on the time-dependent intensities (i.e., transportation order quantities). these decisions are tightly incorporated but previous research considered them mostly isolated. this is quite naturally since these problems contain data of different detail degree which can be hardly incorporated in only one model. To resolve this problem, we present a hybrid multi-period distribution-transportation model as an optimal control problem blended with linear programming. this contribution has some particular features. First, it extends previous research by elaborating on the dynamic optimal control model. Second, it considers multi-period problem statement with multiple products and alternative transportation channels. third, we represent the integrated SC planning in terms of structure dynamics control theory in order to take into account execution stage and adaptation. With the results of this study, the dynamic issues in integrated logistics planning in the SC can be addressed, and an intelligent solution to the important problem of SC management has been proposed. Copyright © 2013 IFAC.

关键词： Dynamics

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Using differences among replications of software engineering experiments to gain knowledge

Using differences among replications of software engineering...

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international Mining Software Repositories, MSR

作者： Natalia Juristo Sira Vegas Universidad Politécnica de Madrid Spain

In no science or engineering discipline does it make sense to speak of isolated experiments. the results of a single experiment cannot be viewed as representative of the underlying reality. the concept of experiment is closely related to replication. Experiment replication is the repetition of an experiment to double-check its results. Multiple replications of an experiment increase the credibility of its results. Software engineering has tried its hand at the identical repetition of experiments in the way of the natural sciences (physics, chemistry, etc.). After numerous attempts over the years, excepting experiments repeated by the same researchers at the same site, no exact replications have yet been achieved. One key reason for this is the complexity of the software development setting. this complexity prevents the many experimental conditions from being reproduced identically. this paper reports research into whether non-exact replications can be of any use. We propose a process that allows researchers to generate new knowledge when running non-exact replications. To illustrate the advantages of the proposed process, two different replications of an experiment are shown.

关键词： Software engineering Knowledge engineering Physics Chemistry programming Biographies Software systems Software measurement

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OSS developers context-specific Preferred Representational systems: A initial Neurolinguistic text analysis of the Apache mailing list

OSS developers context-specific Preferred Representational s...

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international Mining Software Repositories, MSR

作者： Methanias Colaço Júnior Manoel Mendonça Mario Farias Paulo Henrique Software Engineering Laboratory (LES) Federal University of Bahia Salvador BA Brazil

Open Source Software (OSS) mailing lists are used by developers to discuss software engineering tasks performed in the project. In the last years, researchers have been conducting mailing lists linguistic analyses for understanding the intricacies of OSS development. An unpublished approach for that is to use NeuroLinguistic theory (NT). NT postulates the use of a Preferred Representational cognitive System (PRS) in specific contexts. this means that different resources and cognitive channels are used by developers in order to understand software, but what types of representational systems are the preferred by software engineers? this paper introduces a psychometrically-based neuro-linguistic analysis tool to classify developers, and presents early results of an experiment to assess the PRS of four top developers against a baseline of the Apache server mailing list.

关键词： Text analysis Open source software Psychology Software engineering programming profession Text mining Software maintenance Context Cognition Laboratories

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Predicting the severity of a reported bug

Predicting the severity of a reported bug

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international Mining Software Repositories, MSR

作者： Ahmed Lamkanfi Serge Demeyer Emanuel Giger Bart Goethals LORE - Lab On Reengineering University of Antwerp Belgium SEAL - Software Evolution and Architecture Lab University of Zürich Switzerland ADReM - Advanced Database Research and Modelling University of Antwerp Belgium

the severity of a reported bug is a critical factor in deciding how soon it needs to be fixed. Unfortunately, while clear guidelines exist on how to assign the severity of a bug, it remains an inherent manual process left to the person reporting the bug. In this paper we investigate whether we can accurately predict the severity of a reported bug by analyzing its textual description using text mining algorithms. Based on three cases drawn from the open-source community (Mozilla, Eclipse and GNOME), we conclude that given a training set of sufficient size (approximately 500 reports per severity), it is possible to predict the severity with a reasonable accuracy (both precision and recall vary between 0.65-0.75 with Mozilla and Eclipse; 0.70-0.85 in the case of GNOME).

关键词： Text mining Computer bugs Computer crashes Guidelines Algorithm design and analysis programming Software systems Seals Software debugging Computer architecture

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Route planning for capacity restricted agents over railway network, without disrupting train schedules 7th

Route planning for capacity restricted agents over railway n...

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7th international conference on Advances in Control and Optimization of Dynamical Systems (ACODS)

作者： Buriuly, Somnath Vachhani, Leena Sinha, Arpita Ravitharan, Sivapragasam Chauhan, Sunita Indian Inst Technol Syst & Control Engn Mumbai Maharashtra India Monash Univ Dept Mech & Aerosp Clayton Vic Australia Monash Univ Monash Inst Railway Technol Clayton Vic Australia

Deploying mobile instrumentation for railway track inspection is a routing and scheduling problem, that can be benefited from plans which don't disrupt regular train schedules. In this work, we avoid disrupting train schedules by modeling unavailability of railway tracks, thereby improving reliability without sacrificing on costs. the approach involves a novel mathematical formulation for Capacitated Arc Routing Problem with Temporal restrictions due to arc Unavailabilities (CARP-TU). In addition, we discuss the challenges in CARP-TU w.r.t sibling problems, and propose a suitable column generation algorithm for improving upper and lower bounds. the proposed algorithm is validated over few benchmark datasets, and then two variants of the proposed algorithm are compared to analyse the bound improvements w.r.t problem size.

关键词： Capacitated Arc Routing Problem Temporal Arc Unavailability Railway Robotics Column generation Dynamic programming

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Optical properties of N and transition metal R (R=V, Cr, Mn, Fe, Co, Ni, Cu, and Zn) codoped anatase TiO₂

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PHYSICA B-CONDENSED MATTER 2012年第14期407卷 2709-2715页

作者： Zhang, Renhui Wang, Qing Liang, Jun Li, Qiang Dai, Jianfeng Li, Weixue Lanzhou Univ Technol Sch Sci Lanzhou 730050 Peoples R China Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Solid Lubricat Lanzhou 730000 Peoples R China Sichuan Prov YiBin Univ Computat Phys Key Lab Yibin 644000 Peoples R China

the electronic structures, deformation charge density, dipole moment and optical properties of N and transition metal R (R=V, Cr, Mn, Fe, Co, Ni, Cu and Zn) codoped anatase TiO2 are studied using the plane-wave ultrasoft pseudopotential method of density functional theory (DFT). the results exhibit that the absorption coefficients of the N+Cr-doped TiO2 are in accordance with the experimental values in the visible-light region. the calculated results reveal that the N+R-doped TiO2 is helpful for enhancing the absorption coefficient in the visible-light region;especially, among the eight materials, N+Mn-doped TiO2 has the largest value of absorption coefficient in the visible-light region. the ionic bonding and Jahn-Teller distortion would contribute to increase the photocatalytic activity of TiO2 in the visible-light region. All in all, for doped TiO2, the large dipole moment of TiO6 octahedron can enhance the optical responses in the visible-light region;in this work, however, it is found that the small dipole moment of TiO6 octahedron would increase the absorption coefficient in the visible-light region. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.

关键词： First principles Optical properties Electronic structure Band structure Anatase TiO2

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thEX: Mining metapatterns from java

THEX: Mining metapatterns from java

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international Mining Software Repositories, MSR

作者： Daryl Posnett Christian Bird Premkumar Devanbu Department of Computer Science University of California Davis USA

Design patterns are codified solutions to common object-oriented design (OOD) problems in software development. One of the proclaimed benefits of the use of design patterns is that they decouple functionality and enable different parts of a system to change frequently without undue disruption throughout the system. these OOD patterns have received a wealth of attention in the research community since their introduction; however, identifying them in source code is a difficult problem. In contrast, metapatterns have similar effects on software design by enabling portions of the system to be extended or modified easily, but are purely structural in nature, and thus easier to detect. Our long-term goal is to evaluate the effects of different OOD patterns on coordination in software teams as well as outcomes such as developer productivity and software quality. we present thEX, a metapattern detector that scales to large codebases and works on any Java bytecode. We evaluate thEX by examining its performance on codebases with known design patterns (and therefore metapatterns) and find that it performs quite well, with recall of over 90%.

关键词： Java Software design Software quality Object oriented modeling Productivity Detectors Software performance Birds Computer science programming

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Priority switching approach for multi-objective MPC for brandy distillation systems

Priority switching approach for multi-objective MPC for bran...

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international conference on Control, Decision and Information Technologies (CoDIT)

作者： Marwa Ben Ticha Vincent Sircoulomb Nicolas Langlois ASPI-SIT Group Saint-Lo France UNIROUEN ESIGELEC IRSEEM Normandie University Rouen France

ISBN: (数字)9781728159539

ISBN: (纸本)9781728159546

this paper proposes a new Model Predictive Control approach that is based on multi-objective optimization with prioritization and switching between multiple models obtained at different operating phases. At each sampling step, several conflicting objectives are to be optimized under an order of priority that may be changed from one phase of the process working cycle to another. the proposed Switched Multi-Objective Prioritizing MPC (S-MOP-MPC) is then applied to a brandy distillation process.

关键词： Switches Control systems Process control Mathematical model Linear programming Soft switching Production

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