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An autonomous middleware model for essential services in distributed mobile applications

4th International ICST Conference on Mobile Wireless Middleware, Operating Systems, and Applications, MobilWare 2011

作者： Maia, Marcio E. F. Rocha, Lincoln S. Maia, Paulo Henrique M. Andrade, Rossana M. C. Group of Computer Networks Software Engineering and Systems Federal University of Ceara Campus Do Pici Av. Mister Hull s/n - Bloco 942-A Fortaleza CE CEP: 60455-760 Brazil

ISBN: (纸本)9783642306068

The evolution and popularization of mobile devices and wireless networks give rise to the creation of a new interaction paradigm, where the devices cooperate to execute short tasks. In this scenario, the problem of how to handle environment changes, which may increase the complexity of distributed mobile applications management and maintenance, needs to be addressed. This paper presents an autonomous and evolutionary model to permit a prompt adaptation of essential services (i.e. message exchange, service description service discovery, service coordination, mobility support and security) to context changes. To validate it, a mathematical model describing the time complexity to diffuse an efficient implementation of an essential service (strategy) taking into account the number of devices is proposed. Finally, the diffusion approach is implemented in a simulator to reason about its impact on the overall efficiency of the essential services and, consequently, the performance of the application. © 2012 ICST Institute for computer Science, Social Informatics and Telecommunications engineering.

关键词： Mobile computing

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Intelligent environments with entangled quality properties

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Journal of Reliable Intelligent Environments 2022年第3期8卷 223-226页

作者： Rodríguez-Domínguez, Carlos Santokhee, Aditya Hornos, Miguel J. Research Group Software Engineering Department Higher Technical School of Computer and Telecommunication Engineering Campus de Aynadamar University of Granada Granada18071 Spain School of Digital Technologies Middlesex University Mauritius Flic en Flac Mauritius

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On infrastructure for facilitation of inner source in small development teams

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8892卷 149-163页

作者： Linåker, Johan Krantz, Maria Höst, Martin Software Engineering Research Group Computer Science Lund University Lund Sweden

The phenomenon of adopting open source software development practices in a corporate environment is known by many names, one being inner source. The objective of this study is to investigate how an organization consisting of small development teams can benefit from adopting inner source and assess the level of applicability. The research has been conducted as a case study at a software development company. Data collection was carried out through interviews and a series of focus group meetings, and then analyzed by mapping it to an available framework. The analysis shows that the organization possesses potential, and also identified a number of challenges and benefits of special importance to the case company. To address these challenges, the case study synthesized the organizational and infrastructural needs of the organization in a requirements specification describing a technical infrastructure, also known as a software forge, with an adapted organizational context and work process. © Springer International Publishing Switzerland 2014.

关键词： Open source software

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An empirical investigation of single-objective and multiobjective evolutionary algorithms for developer's assignment to bugs

An empirical investigation of single-objective and multiobje...

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作者： Karim, Muhammad Rezaul Ruhe, Günther Rahman, Md. Mainur Garousi, Vahid Zimmermann, Thomas Software Engineering Decision Support Laboratory University of Calgary CalgaryAB Canada MNP LLP CalgaryAB Canada Software Engineering Research Group Department of Computer Engineering Hacettepe University Ankara Turkey Microsoft Research One Microsoft Way RedmondWA98052 United States

In this paper, the modeling of developers’ assignment to bugs (DAB) is studied. The problem is modeled both as a single objective (minimize bug fix time) and as a bi-objective (minimize bug fix time and cost) combinatorial optimization problem. Two models of developer assignment are considered where in the first model a single developer is assigned per bug (single developer model), while in the second model a single developer is assigned for each competency area of a bug (individual competency model). The latter model is proposed in this paper. For the single developer model, GA@DAB, an existing genetic algorithm-based approach, is extended to support precedence among bugs. For the individual competency model of DAB, one genetic algorithm-based approach (Competence@DAB) and one nondominated sorting genetic algorithm II-based approach (CompetenceMulti2@DAB) are proposed to generate solutions minimizing time and minimizing both time and cost, respectively. The performance of the proposed approaches was evaluated for 2040 bugs of 19 open-source milestone projects from the Eclipse platform. Our results and analysis show that the proposed individual competency model is far better than the single developer model, with average bug fix time reduction of 39.7% across all projects. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

关键词： Genetic algorithms

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Experience with maintenance of a functional GUI test suite using IBM Rational Functional Tester

Experience with maintenance of a functional GUI test suite u...

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作者： Shewchuk, Yuri Garousi, Vahid InUnison Technology Calgary AB Canada Dept. of Electrical and Computer Engineering Software Quality Engineering Research Group University of Calgary Calgary AB Canada

ISBN: (纸本)1891706268

Most of the modern software systems are being maintained and evolved through numerous versions. Thus, effective co-maintenance and co-evolution of their test suites along with their source code becomes an important and challenging issue. In this context, issues such as the types and extent of required maintenance activities on test suites, change in size/complexity, fault and cost effectiveness of multi-version functional test suites are among the most important issues. To study, analyze and get insights into co-maintenance and co-evolution of functional test suites with software systems w.r.t. the above issues, we have performed a case study on a functional GUI test suite of a popular open source project (jEdit). We chose as our test tool the IBM Rational Functional Tester, one of the leading commercial functional testing tools. The case study reveals interesting practical/empirical insights into the subject, e.g., developing a functional test suite in an earlier version and maintaining it might be a cost effective approach.

关键词： Graphical user interfaces

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Applying Reinforcement Learning to Packet Scheduling in Routers 15

Applying Reinforcement Learning to Packet Scheduling in Rout...

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15th AAAI Conference on Innovative Applications of Artificial Intelligence IAAI 2003

作者： Ferra, Herman Lau, Ken Leckie, Christopher Tang, Anderson Telstra Research Laboratories 770 Blackburn Road Clayton3186 Australia ARC Special Research Centre for Ultra-Broadband Information Networks Department of Computer Science and Software Engineering The University of Melbourne Parkville3010 Australia

ISBN: (纸本)1577351886

An important problem for the Internet is how to provide a guaranteed quality of service to users, in contrast to the current "best-effort" service. A key aspect of this problem is how routers should share network capacity between different classes of traffic. This decision needs to be made for each incoming packet, and is known as the packet scheduling problem. A major challenge in packet scheduling is that the behaviour of each traffic class may not be known in advance, and can vary dynamically. In this paper, we describe how we have modelled the packet scheduling problem as an application for reinforcement learning (RL). We demonstrate how our RL approach can learn scheduling policies that satisfy the quality of service requirements of multiple traffic classes under a variety of conditions. We also present an insight into the effectiveness of two different RL algorithms in this context. A major benefit of this approach is that we can help network providers deliver a guaranteed quality of service to customers without manual fine-tuning of the network routers. Copyright © 2003, American Association for Artificial Intelligence (***). All rights reserved.

关键词： Quality of service

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Adjusted probabilistic packet marking for IP traceback 2nd

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2nd International IFIP-TC6 Networking Conference, NETWORKING 2002

作者： Peng, Tao Leckie, Christopher Ramamohanarao, Kotagiri ARC Special Research Center for Ultra-Broadband Information Networks Department of Electrical and Electronic Engineering The University of Melbourne VIC3010 Australia Department of Computer Science and Software Engineering The University of Melbourne VIC3010 Australia

ISBN: (纸本)3540437096

Distributed denial-of-service attack is one of the greatest threats to the Internet today. One of the biggest difficulties in defending against this attack is that attackers always use incorrect, or "spoofed" IP source addresses to disguise their true origin. In this paper, we present a packet marking algorithm which allows the victim to traceback the approximate origin of spoofed IP packets. The difference between this proposal and previous proposals lies in two points. First, we develop three techniques to adjust the packet marking probability, which significantly reduces the number of packets needed by the victim to reconstruct the attack path. Second, we give a detailed analysis of the vulnerabilities of probabilistic packet marking, and describe a version of our adjusted probabilistic packet marking scheme whose performance is not affected by spoofed marking fields. © Springer-Verlag Berlin Heidelberg 2002.

关键词： Denial-of-service attack

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A Novel Low Power and High Speed 9-Transistors Dynamic Full-Adder Cell Simulation and Design 28

A Novel Low Power and High Speed 9-Transistors Dynamic Full-...

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28th IEEE Symposium on computers and Communications, ISCC 2023

作者： Rahimi, Parisa Tabany, Myasar Pourmoafi, Seyedali School of Physics Engineering Networks Computer Science University of Hertfordshire ALI0 9AB Hatfield Security and Systems Research Group Hertfordshire United Kingdom

ISBN: (纸本)9798350300482

In this paper, a novel Full-Adder cell, named pseudo dynamic has been proposed and designed through an intensive simulation. The circuit has only 9 transistors and no internal nodes connected to ground. The circuit has been designed based on a 'floating full adder cell,' which has 3 inputs and a clock signal. Simulations have been performed using HSPICE 2008.03, based on 90nm technology, BSIM4 (level 54) version 4.4 model. The cell layout was designed and extracted by Tanner research's L-Edit Version 13.00. Results show that the proposed new Full-Adder cell has considerable low power-delay product (PDP). The resulting PDP of a Multi-Output design with a 1.2 V power supply, 10 fF load capacitors, and a maximum input frequency of 200 MHz was 15.3405fJ. The maximum propagation delay was 25 pS, which shows the cell would work properly at high speeds. © 2023 IEEE.

关键词： Cells

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Physical Adversarial Attack Scheme on Object Detectors using 3D Adversarial Object 2

Physical Adversarial Attack Scheme on Object Detectors using...

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2nd International Conference on Digital Futures and Transformative Technologies, ICoDT2 2022

作者： Toheed, Abeer Yousaf, Muhammad Haroon Rabnawaz Javed, Ali Uet Taxila Swarm Robotics Lab-NCRA Pakistan Uet Taxila Department of Computer Engineering Pakistan Cust VisPRS Research Group Pakistan Uet Taxila Department of Software Engineering Pakistan

ISBN: (纸本)9781665498197

Adversarial attacks are being frequently used these days to exploit different machine learning models including the deep neural networks (DNN) either during the training or testing stage. DNN under such attacks make the false predictions. Digital adversarial attacks are not applicable in physical world. Adversarial attack on object detection is more difficult as compared to the adversarial attack on image classification. This paper presents a physical adversarial attack on object detection using 3D adversarial objects. The proposed methodology overcome the constraint of 2D adversarial patches as they only work for certain viewpoints only. We have mapped an adversarial texture onto a mesh to create the 3D adversarial object. These objects are of various shapes and sizes. Unlike adversarial patch attacks, these adversarial objects are movable from one place to another. Moreover, application of 2D patch is limited to confined viewpoints. Experimentation results show that our 3D adversarial objects are free from such constraints and perform a successful attack on object detection. We used the ShapeNet dataset for different vehicle models. 3D objects are created using Blender 2.93 [1]. Different HDR images are incorporated to create the virtual physical environment. Moreover, we targeted the FasterRCNN and YOLO pre-trained models on the COCO dataset as our target DNN. Experimental results demonstrate that our proposed model successfully fooled these object detectors. © 2022 IEEE.

关键词： Object detection

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Metaheuristic design pattern: Preference 15

Metaheuristic design pattern: Preference

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17th Genetic and Evolutionary Computation Conference, GECCO 2015

作者： Aljawawdeh, Hamzeh J. Simons, Christopher L. Odeh, Mohammed Software Engineering Research Group Department of Computer Science and Creative Technologies University of the West of England BristolBS16 1QY United Kingdom

ISBN: (纸本)9781450334884

In interactive metaheuristic search, the human helps to steer the trajectory of the search by providing qualitative evaluation to assist in the selection of solution individuals. It can be challenging to design mechanisms to exploit human qualitative evaluation taking into account human trade-off judgments among competing criteria and implicit knowledge and experience. This paper addresses this challenge by proposing the Preference metaheuristic design pattern involving six abstractions across two dimensions: explicit and implicit knowledge and a priori, interactive and a posteriori timings. © 2015 ACM.

关键词： Economic and social effects

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