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Australasian Telecommunication Networks and Applications Conference, ATNAC

作者： Mofassir Ul Haque Don McNickle Krzysztof Pawlikowski Andreas Willig Computer Science and Software Engineering Dept University of Canterbury Christchurch New Zealand

Simulation is used for developing and testing different scenarios under controlled and reproducible situations. Proper handling of the initial transient effect for steady state simulations, proper selection of simulation length and proper statistical analysis of results are essential for conducting credible simulations. Akaroa2, a universal controller for quantitative discrete event simulation, has been designed to improve credibility of simulation results. It automatically handles the initial transient effect, carries out statistical analysis of results and controls simulation length by stopping the simulation when the required precision is achieved based on continuous analysis of mean values. Simulation programs can be made to run under Akaroa2 to provide statistically valid results. OPNET is a popular simulator used for carrying out telecommunication and networking related simulations, but it does not provide automated simulation length control and initial transient effect handling. We have developed an interface using OPNET co-simulation capabilities to run OPNET simulations under Akaroa2 control. It will allow the user of OPNET to control the length of simulation on basis of the accuracy of statistical results. OPNET and Akaroa2 are available for free for non-profit research at universities.

关键词： Computational modeling Analytical models Transient analysis Delay Steady-state Educational institutions Simulation

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An architectural approach to ensure globally consistent dynamic reconfiguration of component-based systems 12

An architectural approach to ensure globally consistent dyna...

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15th ACM SIGSOFT Symposium on Component Based software engineering, CBSE'12

作者： Ghafari, Mohammad Jamshidi, Pooyan Shahbazi, Saeed Haghighi, Hassan Dept. of Computer Engineering and Information Technology Payame Noor University Tehran Iran Lero - The Irish Software Engineering Research Centre School of Computing Dublin City University Dublin Ireland Dept. of Mathematics Faculty of Science Khaje Nasir Toosi University of Technology Tehran Iran Faculty of Electrical and Computer Engineering Shahid Beheshti University Tehran Iran

ISBN: (纸本)9781450313452

One of the key issues that should be considered when addressing reliable evolution is to place a software system in a consistent status before and after change. This issue becomes more critical at runtime because it may lead to the failure on running mission-critical systems. In order to place the affected elements in a safe state before dynamic changes take place, the notion of tranquility has been proposed to make quiescence criterion less disruptive and easier to obtain. However, it only ensures consistency in applications with restrictive black-box design. In this paper, an architecture-based approach is proposed to preserve global consistency during runtime reconfiguration of component-based systems in distributed contexts. An initial evaluation through a prototypical implementation shows that this approach not only enables tranquility to be applicable for distributed transactions, but also significantly reduces required time to achieve a safe state and increases system availability during runtime evolution. Copyright © 2012 ACM.

关键词： software architecture

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Functional integrated circuit analysis

Functional integrated circuit analysis

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2012 IEEE International Symposium on Hardware-Oriented Security and Trust, HOST 2012

作者： Nedospasov, Dmitry Seifert, Jean-Pierre Schlosser, Alexander Orlic, Susanna Security in Telecommunications Dept. of Software Engineering and Theoretical Computer Science Technische Universität Berlin Berlin Germany Optical Technologies Institute for Optics and Atomic Physics Technische Universität Berlin Berlin Germany

ISBN: (纸本)9781467323390

This work introduces a novel, automated methodology for performing functional analysis of integrated circuits (ICs), such as microcontrollers and smart cards. By selectively executing code on a given chip, the resulting optical emission images yield critical information about the chip's functional layout. Automation of the code-generation allows us to generate and process hundreds of test cases that access specific elements of the IC. Subsequently, by correlating the executed code with the images, we are able to locate and identify functional elements of the chip's design, such as memory layout and important registers. This methodology provides an efficient way to isolate potential points of interest and thus significantly reduces the amount of effort required to mount attacks. We present exemplary results for a common microcontroller. © 2012 IEEE.

关键词： Timing circuits

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Architecture for Large-Scale Innovation Experiment Systems

Architecture for Large-Scale Innovation Experiment Systems

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Working IEEE/IFIP Conference on software Architecture

作者： Ulrik Eklund Jan Bosch Software Engineering Division Dept. of Computer Science & Engineering Chalmers University of Technology Göteborg Sweden

Business and design decisions regarding software development should be based on data, not opinions among developers, domain experts or managers. The company running the most and fastest experiments among the customer base against the lowest cost per experiment outcompetes others by having the data to engineer products with outstanding qualities such as power consumption and user experience. Innovation experiment systems for mass-produced devices with embedded software is an evolution of current R&D practices, going from where innovations are internally evaluated by the original equipment manufacturer to where they are tried by real users in a scale relevant to the full customer base. The turnaround time from developing and deploying an embedded product to getting customer feedback is decreased to weeks, the limit being the speed of the software development teams. The paper presents an embedded architecture for realising such a novel innovation experiment system based on a set of scenarios of what to evaluate in the experiments. A case is presented implementing an architecture in a prototype in-vehicle infotainment system where comparative testing between two software alternatives was performed.

关键词： Technological innovation computer architecture Vehicles Embedded systems Embedded software Testing

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Dual transfer learning

Dual transfer learning

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12th SIAM International Conference on Data Mining, SDM 2012

作者： Long, Mingsheng Wang, Jianmin Ding, Guiguang Cheng, Wei Zhang, Xiang Wang, Wei Department of Computer Science and Technology Tsinghua University Beijing 100084 China School of Software Tsinghua University Beijing 100084 China Key Laboratory for Information System Security Ministry of Education United States Department of Computer Science University of North Carolina Chapel Hill NC United States Dept of Electrical Engineering and Computer Science Case Western Reserve University OH United States

ISBN: (纸本)9781611972320

Transfer learning aims to leverage the knowledge in the source domain to facilitate the learning tasks in the tar- get domain. It has attracted extensive research interests recently due to its effectiveness in a wide range of applica- Tions. The general idea of the existing methods is to utilize the common latent structure shared across domains as the bridge for knowledge transfer. These methods usually model the common latent structure by using either the marginal distribution or the conditional distribution. However, with- out exploring the duality between these two distributions, these single bridge methods may not achieve optimal capa- bility of knowledge transfer. In this paper, we propose a novel approach, Dual Transfer Learning (DTL), which simultaneously learns the marginal and conditional distributions, and exploits the du- Ality between them in a principled way. The key idea behind DTL is that learning one distribution can help to learn the other. This duality property leads to mutual reinforcement when adapting both distributions across domains to trans- fer knowledge. The proposed method is formulated as an optimization problem based on joint nonnegative matrix tri- factorizations (NMTF). The two distributions are learned from the decomposed latent factors that exhibit the duality property. An efficient alternating minimization algorithm is developed to solve the optimization problem with con- vergence guarantee. Extensive experimental results demon- strate that DTL is more effective than alternative transfer learning methods. Copyright © 2012 by the Society for Industrial and Applied Mathematics.

关键词： Optimization

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Towards smart user interface design

2012 International Conference on Information Science and App...

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2012 International Conference on Information science and Applications, ICISA 2012 2012年

作者： Cerny, Tomas Chalupa, Vaclav Donahoo, Michael J. Dept. of Computer Science and Engineering Czech Technical University Prague Czech Republic Dept. of Software Engineering Czech Technical University Prague Czech Republic Dept. of Computer Science Baylor University Waco TX United States

ISBN: (纸本)9781467321860

User interface development and maintenance presents a burden for many developers. UI development approaches often restate information already captured in the application model such as entity attributes, validation, security, etc. Changes in application model often require many subsequent changes to the UI. Such duplication creates additional maintenance requirements for synchronization (at a minimum) and often is a source for errors (i.e., when model and UI disagree). Adding to the difficulties of creation and maintenance, typical UI implementations often tangle multiple concerns together such as presentation, validation, layout, security, etc. In this paper, we provide an approach that reduces information duplication and untangles mixed concerns. The capability of runtime UI generation can render user-specific UI, reduce conditional evaluation, and integrate third party security frameworks. To evaluate our approach, we provide a case study that demonstrates reduction of maintenance efforts, separation of concerns and performance of runtime UI generation. © 2012 IEEE.

关键词： Data visualization

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Extracting models from web API documentation

Extracting models from web API documentation

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12th ICWE 2012, Co-located with 8th International Workshop on MDWE 2012, 4th International Workshop on Lightweight Integration on the Web, ComposableWeb 2012, 3rd Workshop on WeRE 2012, 3rd International Workshop on QWE 2012, and Doctoral Consortium

作者： Rodríguez, Rolando Espinosa, Roberto Bianchini, Devis Garrigós, Irene Mazón, Jose-Norberto Zubcoff, Jose Jacobo WaKe Research Dept. of Computer Science University of Matanzas Camilo Cienfuegos Cuba Dept. of Information Engineering University of Brescia Italy WaKe Research Dept. of Software and Computing Systems University of Alicante Spain WaKe Research Dept. of Marine Sciences and Applied Biology University of Alicante Spain

ISBN: (纸本)9783642356223

In order to develop web mashups, designers need an in-depth understanding of each Web API they are using. However, Web API documentation is rather heterogeneous, represented by big HTML files or collection of files in which it is difficult to identify elements such as API methods and how they can be invoked. Models have been widely recognized as first-citizen artifacts for documenting software applications, abstracting from implementation details, thus becoming good candidates to raise the level of automation of web mashup development. In this paper we present an approach for extracting models from Web API documentation. Our contributions are (i) a metamodel for standardizing the information extracted from Web APIs documentation;and (ii) a method for the extraction of models by parsing HTML files containing the Web API documentation, discovering useful data, and automatically generating the corresponding models (that conform to the defined metamodel). © 2012 Springer-Verlag.

关键词： Application programs

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Constructing a Cloud-Based IDS by Merging VMI with FMA

Constructing a Cloud-Based IDS by Merging VMI with FMA

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IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom)

作者： Christopher Harrison Devin Cook Robert McGraw John A. Hamilton Jr. Dept. Computer Science & Software Engineering Auburn University Ram Laboratories Inc. San Diego Ca

Cloud computing has emerged in recent years as a major segment of the IT industry; however, security concerns remain the primary impediment to full-scale adoption. Leveraging properties of virtualization, virtual machine introspection (VMI) has yielded promising research for cloud security yet adoption of these approaches in production environments remains minimal due to a semantic gap: the extraction of high-level knowledge of the guest operating system's state from low-level artifacts collected out-of-VM. Within the field of forensic memory analysis (FMA), a similar semantic gap exists from the reconstruction of physical memory dumps. We implement a production oriented prototype utilizing designs that combines and narrows these semantic gaps in a modular framework to function as an intrusion detection system (IDS) detecting and defeating post-exploitation activity.

关键词： Monitoring Malware Prototypes Virtual machining Databases

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Image retrieval in the unstructured data management system AUDR

Image retrieval in the unstructured data management system A...

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IEEE International Conference on e-science and Grid Computing

作者： Junwu Luo Bo Lang Chao Tian Danchen Zhang State Key Laboratory of Software Development Environment Dept. of Computer Science and Engineering Beihang University Beijing China

The explosive growth of image data leads to severe challenges to the traditional image retrieval methods. In order to manage massive images more accurate and efficient, this paper firstly proposes a scalable architecture for image retrieval based on a uniform data model and makes this function a sub-engine of AUDR, an advanced unstructured data management system, which can simultaneously manage several kinds of unstructured data including image, video, audio and text. The paper then proposes a new image retrieval algorithm, which incorporates rich visual features and two text models for multi-modal retrieval. Experiments on both ImageNet dataset and ImageCLEF medical dataset show that our proposed architecture and the new retrieval algorithm are appropriate for efficient management of massive image.

关键词： Image retrieval Feature extraction Visualization Data models Indexes Engines computer architecture

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Assessing team performance from a socio-technical congruence perspective

Assessing team performance from a socio-technical congruence...

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International Conference on software and System Process (ICSSP)

作者： Li Jiang Kathleen M. Carley Armin Eberlein School of Computer Science University of Adelaide Australia Institute of Software Research Carnegie Mellon University USA Dept. of Computer Science & Engineering American University of Sharjah UAE

There are many factors that provide input into the software development process, such as the values, beliefs, norms, practices, skills, behaviors, knowledge and goals of stakeholders. Research has shown that successful software system development relies on alignment or congruence between these factors. How to monitor the level of congruence between these factors and how to use the congruence as an indicator or a measure to monitor a software development process is a challenge in software engineering. This paper proposes a model that uses three congruence measures to examine the levels of social-technical congruence in software development processes. Using a controlled experiment with seven student teams developing a robot project, this paper demonstrates that the proposed congruence measures provide results consistent with the assessment by the course lecturers.

关键词： software Programming Knowledge engineering Mathematical model Educational institutions software measurement Robots

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