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Composition of Dynamic Analysis Aspects

ACM SIGPLAN NOTICES 2011年第2期46卷 113-122页

作者： Tanter, Eric Moret, Philippe Binder, Walter Ansaloni, Danilo Univ Chile Comp Sci Dept DCC PLEIAD Lab Santiago Chile Univ Lugano Fac Informat Lugano Switzerland

Aspect-oriented programming provides a convenient high-level model to define several kinds of dynamic analyses, in particular thanks to recent advances in exhaustive weaving in core libraries. Casting dynamic analyses as aspects allows the use of a single weaving infrastructure to apply different analyses to the same base program, simultaneously. However, even if dynamic analysis aspects are mutually independent, their mere presence perturbates the observations of others: this is due to the fact that aspectual computation is potentially visible to all aspects. Because current aspect composition approaches do not address this kind of computational interference, combining different analysis aspects yields at best unpredictable results. It is also impossible to flexibly combine various analyses, for instance to analyze an analysis aspect. In this paper we show how the notion of execution levels makes it possible to effectively address these composition issues. In order to realize this approach, we explore the practical and efficient integration of execution levels in a mainstream aspect language, AspectJ. We report on a case study of composing two out-of-the-box analysis aspects in a variety of ways, highlighting the benefits of the approach.

关键词： Algorithms Languages Measurement Aspect-oriented programming execution levels aspect composition dynamic program analysis AspectJ

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Wide-area PMU-ANN based monitoring of low frequency oscillations in a wind integrated power system

Wide-area PMU-ANN based monitoring of low frequency oscillat...

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India international conference on Power Electronics (IICPE)

作者： Abhilash Kumar Gupta Kusum Verma K. R. Niazi Department of Electrical Engineering Malaviya National Institute of Technology Jaipur India

ISBN: (纸本)9781538649978;9781538649961

the wind integration is on the rise in modern grids to generate cleaner energy due to increasing environmental concerns. this further escalates the problem of low frequency oscillations (LFOs) in power system. thus, real-time monitoring of oscillations becomes even more important in present interconnected power systems. the conventional methods are offline and time consuming. In this work, a wide-area based method employing Phasor Measurement Units (PMUs) and Artificial Neural Network (ANN) is proposed to predict the system oscillatory status in real-time. the PMUs are optimally placed using modified Integer Linear programming. the PMU data is dimensionally reduced using Principal component Analysis before using it to train the ANN. the ANN predicts the LFO related information like damping ratio and frequency and an index to access the mode's localness. the proposed methodology is verified on IEEE New England benchmark system. the suggested method is very fast and accurate in predicting the required information in real-time for different operating conditions involving topological variations with very less computational requirement.

关键词： Phasor measurement units Damping Monitoring Real-time systems Doubly fed induction generators Power system stability Principal component analysis

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Emerging challenges for large scale systems integration 08

Emerging challenges for large scale systems integration

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Proceedings of the 7th international conference on generative programming and component engineering

作者： Andrew Fano Accenture Technology Labs Chicago IL USA

ISBN: (纸本)9781605582672

Over the past 15 years large systems integrators have grown in size by an order of magnitude. During this time the nature of the systems we build, the manner in which they are built, and the clients for whom they are built have seen corresponding growth. During this talk I will review some of these changes and discuss some of the challenges we see on the horizon as these trends continue. What kind of systems would a systems integrator with 2 million people develop? How would they be built?

关键词： components software engineering system integration

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VAEL: bridging variational autoencoders and probabilistic logic programming 22

VAEL: bridging variational autoencoders and probabilistic lo...

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Proceedings of the 36th international conference on Neural Information Processing Systems

作者： Eleonora Misino Giuseppe Marra Emanuele Sansone Department of Computer Science and Engineering University of Bologna Italy Department of Computer Science KU Leuven Belgium

ISBN: (纸本)9781713871088

We present VAEL, a neuro-symbolic generative model integrating variational autoencoders (VAE) with the reasoning capabilities of probabilistic logic (L) programming. Besides standard latent subsymbolic variables, our model exploits a probabilistic logic program to define a further structured representation, which is used for logical reasoning. the entire process is end-to-end differentiable. Once trained, VAEL can solve new unseen generation tasks by (i) leveraging the previously acquired knowledge encoded in the neural component and (ii) exploiting new logical programs on the structured latent space. Our experiments provide support on the benefits of this neuro-symbolic integration both in terms of task generalization and data efficiency. To the best of our knowledge, this work is the first to propose a general-purpose end-to-end framework integrating probabilistic logic programming into a deep generative model.

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Nash Differential Evolution (NashDE) Algorithm for WAMS Planning

Nash Differential Evolution (NashDE) Algorithm for WAMS Plan...

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India international conference on Power Electronics (IICPE)

作者： C M thasnimol R. Rajathy Dept.of EEE Pondicherry Engineering College Puducherry India

ISBN: (纸本)9781538649978;9781538649961

Wide Area Monitoring System (WAMS) is an inevitable component in todays power system since a small catastrophe like fluctuations caused by the renewable energy sources, fast changing loads, electric vehicles, etc. will lead to the collapse of the whole system. this paper addresses the optimal planning of WAMS by Nash Differential Evolution (NashDE) Algorithm, in which the variables of the problem are clustered into number of clusters, and will evolve parallelly by Differential Evolution (DE) towards the global objective of the problem. For optimization problems which are based on the connectivity of variables involved as in most of the power system planning processes, the convergence speed will greatly improve if variables in a cluster are physically connected. Further, this will ensure global convergence of the problem. Hence, this paper proposes a NashDE algorithm in which the variables are clustered based on their connectivity. Markov Clustering Algorithm (MCL) is used for clustering the variables based on their connectivity. this is the first paper of such kind which addresses WAMS planning problem by Evolutionary Game theory. Simulations are carried out for IEEE 14 and 30 bus test system using Python programming and the results are presented graphically.

关键词： Phasor measurement units Power systems Optimization Planning Clustering algorithms Convergence Sociology

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Research on Ship Magnetic Field Modelling Based on Particle Swarm Optimization Algorithm

Research on Ship Magnetic Field Modelling Based on Particle ...

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2024 8th international conference on Electrical, Mechanical and Computer engineering (ICEMCE)

作者： Bo Wang Kai Zhu Yucheng Jiao Guoguang Zhang The First Research Laboratory Kunming Marine Equipment Research and Test Center Kunming China

ISBN: (数字)9798331506230

ISBN: (纸本)9798331506247

the ship’s magnetic field is a significant source of exposure, and obtaining the characteristics of its magnetic field distribution in the entire space is a prerequisite for enhancing the ship’s magnetic stealth performance. To address the variability of the ship’s magnetic field across different orientations, a modeling method for the ship’s magnetic field based on the Particle Swarm Optimization (PSO) algorithm is proposed, leveraging theoretical magnetic field data from parametric models. An array model of magnetic dipoles for the ship’s magnetic field is established. With the root mean square error of the modeled magnetic field as the objective function, the PSO algorithm is employed to optimize the magnetic moment parameters, yielding an optimal array of magnetic dipoles. Experiments are then designed to validate the approach. the experimental results demonstrate that the proposed method can conveniently, effectively, and accurately simulate the target magnetic field of the ship, with a minimum similarity of $\mathbf{9 5. 2 \%}$ for the three-component magnetic field modeling.

关键词： Magnetic field measurement Magnetic moments Linear programming Particle measurements Parametric statistics Magnetic fields Arrays Marine vehicles Particle swarm optimization Root mean square

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FixGPT: A Novel three-Tier Deep Learning Model for Automated Program Repair

FixGPT: A Novel Three-Tier Deep Learning Model for Automated...

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IEEE international conference on Data Science in Cyberspace (DSC)

作者： Wenhao Ye Jun Xia Shuo Feng Xiangyu Zhong Shuai Yuan Zhitao Guan STATE GRID HUNAN ELECTRIC POWER COMPANY LIMITED Changsha China School of Control and Computer Engineering North China Electric Power University Beijing China HUNAN SGIT TECHNOLOGY CO. LTD. Changsha China Department of Finance Operations and Information Systems Brock University Ontario Canada

Automatic program repair plays a crucial role in the software development and implementation. While deep learning-based approaches have made significant progress, one inherent challenge is the inefficiency in code representation, which hampers accurate patch generation. Furthermore, the training data used by these data-driven approaches may be limited, and they may not be able to capture the subtle differences between vulnerabilities and patches. To address these issues, FixGPT, we propose a three-tier deep learning model in the study. Specifically, a generative pre-trained transformer model is designed in the first tier to capture code characteristics and programming patterns. the second tier integrates a generation model based on the structure of neural machine translation, for the purpose of generating potential patches. Finally, a contrast model is introduced in the last tier to differentiate between the vulnerability and the patch. We also incorporate the Byte Pair Encoding approach to reduce the search space by converting identifiers into subwords. Detailed experimental studies have been carried out to evaluate the performance of FixGPT on two well-known benchmarking datasets: QuixBugs and Defects4J. the results demonstrated significant improvements in the effectiveness and accuracy in comparison with existing solutions. We complement these findings through the analysis of two case studies.

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MDAI: Model based design in automobile industry

MDAI: Model based design in automobile industry

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IEEE international conference on Industrial Informatics (INDIN)

作者： Joao Carlos Amaro Ferreira GuIAA-ISEL Lisboa Portugal

It is proposed a new approach based on a methodology, assisted by a tool, to create new products in the automobile industry based on previous defined processes and experiences inspired on a set of best practices or principles: it is based on high-level models or specifications; it is component-based architecture centric; it is based on generative programming techniques. this approach follows in essence the MDA (Model Driven Architecture) philosophy with some specific characteristics. We propose a repository that keeps related information, such as models, applications, design information, generated artifacts and even information concerning the development process itself (e.g., generation steps, tests and integration milestones). Generically, this methodology receives the users' requirements to a new product (e.g., functional, non-functional, product specification) as its main inputs and produces a set of artifacts (e.g., design parts, process validation output) as its main output, that will be integrated in the engineer design tool (e.g. CAD system) facilitating the work.

关键词： Automobiles Vehicles Packaging Design automation Unified modeling language Ergonomics Process design Automotive engineering Product development programming

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Prototype Sorting Items for Disinfection Sterilization Using Smart Relay 16

Prototype Sorting Items for Disinfection Sterilization Using...

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16th international conference on Telecommunication Systems Services and Applications, TSSA 2022

作者： Somantri, Nivika Tiffany Zani, Mughofa Ridwan, Azwar Mudzakkir Winanti, Naftalin Nurjaman, Dede Furqon Jenderal Achmad Yani University Electrical Engineering Jawa Barat Cimahi Indonesia Uin Sunan Gunung Djati Bandung Department of Electrical Engineering Bandung Indonesia

ISBN: (纸本)9781665455947

Humans have various kinds of needs, namely primary, secondary and tertiary needs. One of the activities to fulfill those needs is to carry out sales and purchase transaction. the development of knowledge and technology makes the process of sales and purchase transaction become easier. Currently, sales and purchase transaction can be carried out online. However, there are many concerns that occur in online transaction, especially during the current pandemic, in which virus can be carried on the purchased items. One of the efforts to reduce the spread of the virus is to carry out disinfection sterilization. Prototype sorting items for disinfection sterilization is one of ways to carry out automatic sterilization. this system uses a smart relay as its main component, and uses ladder diagram programming as instruction. the smart relay used is zelio with 10 I/O. It has an input in the form of a photoelectric sensor that will be directly if there is object in front of it. And also, the addition of a water level sensor is to measure whether the disinfection liquid is ready to use. the output of the smart relay is in the form of a sprayer to spray disinfection liquid, and a dc motor to move object automatically. the dc motor and sprayer become the important points in the disinfection sterilization process. the speed of the dc motor used is 114 RPM with a voltage of 4.4VDC, so that with this speed, the object can reach the sprayer point within 3.5s for high object and 8s for short object. the use of a splitter is to direct short type object using a timer as a determinant of the degree of rotation. the degree of rotation produced must be 45o forward and backward rotation, and the timer used to obtain those degrees is 0.05s for the forward splitter servo motor and 0.1s for the opposite direction until it returns to its initial place. © 2022 IEEE.

关键词： Disinfection

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Applications of Enhanced Dynamic Code Evolution for Java in GUI Development and Dynamic Aspect-Oriented programming

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ACM SIGPLAN NOTICES 2011年第2期46卷 123-126页

作者： Wuerthinger, thomas Binder, Walter Ansaloni, Danilo Moret, Philippe Moessenboeck, Hanspeter Johannes Kepler Univ Linz Linz Austria Univ Lugano Lugano Switzerland

While dynamic code evolution in object-oriented systems is an important feature supported by dynamic languages, there is currently only limited support for dynamic code evolution in high-performance, state-of-the-art runtime systems for statically typed languages, such as the Java Virtual Machine. In this tool demonstration, we present the Dynamic Code Evolution VM, which is based on a recent version of Oracle's state-of-the-art Java HotSpot (TM) VM and allows unlimited changes to loaded classes at runtime. Based on the Dynamic Code Evolution VM, we developed an enhanced version of the Mantisse GUI builder (which is part of the NetBeans IDE) that allows adding GUI components without restarting the application under development. Furthermore, we redesigned the dynamic AOP framework HotWave to take advantage of the enhanced dynamic code evolution capabilities. the new version, HotWave2, now supports most AspectJ constructs, including around() advice and static cross-cutting. We will demonstrate both the enhanced Mantisse GUI builder as well as HotWave2, weaving several aspects for dynamic analysis in sizable applications at runtime.

关键词： Algorithms Languages Dynamic aspect-oriented programming runtime weaving dynamic code evolution dynamic software updates code hotswapping Java Virtual Machine

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