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2018 IEEE International Conference on Innovations in Intelligent Systems and Applications, INISTA 2018

作者： Kirilo, Caique Z. Abe, Jair M. Nogueira, Marcelo Nakamatsu, Kazumi Lozano, Luiz Carlos MacHi De Lima, Luiz A. Software Engineering Research Group Paulista University UNIP São Paulo Brazil Graduate Program in Production Engineering Paulista University UNIP São Paulo Brazil ALGORITMI Centre School of Engineering University of Minho Guimarães Portugal School of Human Science and Environment H.S.E University of Hyogo Hyogo Japan

This study aims to present a compliance analysis tool to Six Sigma by integrating indicative of success and Paraconsistent Method Decision. This way is contributing to a previous scenario analysis that can help the im... 详细信息

ISBN: (纸本)9781538651506

关键词： Six sigma

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An Autonomous Mobile Robot Path Planner using Spline Curves and Differential Evolution

An Autonomous Mobile Robot Path Planner using Spline Curves ...

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2023 IEEE Latin American Conference on Computational Intelligence, LA-CCI 2023

作者： de Rezende Freitas, Elias José Cohen, Miri Weiss Guimarães, Frederico Gadelha Graduate Program in Electrical Engineering Universidade Federal de Minas Gerais Federal Institute of Minas Gerais IFMG Av. Antônio Carlos 6627 MG Belo Horizonte31270-901 Brazil Department of Software Engineering Braude College of Engineering Karmiel Israel Department of Electrical Engineering Universidade Federal de Minas Gerais UFMG MG Belo Horizonte Brazil

ISBN: (纸本)9798350348071

Robots that operate autonomously require a path planner that ensures the robot reaches the desired position in a safe manner. The robot will be able to achieve greater speeds along the path if the path is smooth, minimizing the effort of the controller. This work presents two new path planners, called DE-Spline and DE-NURBS. These planners provide a smooth path directly by the cost function optimization using the algorithm L-SHADE (Success-History based Adaptive of Differential Evolution using linear population size reduction algorithm) and two path’s parametrization: Ferguson cubic spline and NURBS. Additionally, it ensures that the robot reaches the target in the desired orientation. The planners are compared with a Vector Field-based planner, widely used in robot soccer. Based on the results, it has been found that both planners provide a smoother path along the shortest path, by accounting for the robot’s starting angle and its goal angle. Furthermore, DE-NURBS provides a greater degree of planning freedom than DE-Spline. © 2023 IEEE.

关键词： Motion planning

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Towards a formal model to reason about context-aware exception handling

Towards a formal model to reason about context-aware excepti...

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International Workshop on Exception Handling (WEH)

作者： Lincoln S. Rocha Rossana M. C. Andrade Group of Computer Networks Software Engineering and Systems Graduate Program in Computer Science Federal University of Ceará Fortaleza Ceara Brazil

The context-awareness is a central aspect in the design of pervasive systems, characterizing their ability to adapt its structure and behavior. The context-aware exception handling (CAEH) is an existing approach employed to design exception handling in pervasive systems. In this approach, the context is used to define, detect, propagate, and handle exceptions. CAEH is a complex and error prone activity, needing designers' insights and domain expertise to identify and characterize contextual exceptions. However, despite the existence of formal methods to analyze the adaptive behavior of pervasive systems, such methods lack specific support to specify the CAEH behavior. In this paper, we propose a formal model to reason about the CAEH behavior. It comprises an extension of the Kripke Structure to model the context evolution of a pervasive system and a transformation function that derivates the CAEH control flow from that proposed structure.

关键词： Context Context modeling Adaptation models Middleware Computational modeling Engines Cognition

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Using spatial hypertext to visualize composite knowledge in emergency responses

Using spatial hypertext to visualize composite knowledge in ...

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7th International Conference on Information Systems for Crisis Response and Management, ISCRAM 2010

作者： Canós, José H. Penadés, M. Carmen Solís, Carlos Borges, Marcos R.S. Llavador, Manuel Universidad Politécnica de Valencia Valencia Spain Lero The Irish Software Engineering Research Centre University of Limerick Limerick Ireland Graduate Program in Informatics Instituto de Matemática and NCE Federal University of Rio de Janeiro Rio de Janeiro Brazil

Having the right information at the right time is crucial to make decisions during emergency responses. To fulfill this requirement, emergency management systems must provide emergency managers with knowledge management and visualization tools. The goal is twofold: on one hand, to organize knowledge coming from different sources, mainly the emergency response plans (the formal knowledge) and the information extracted from the emergency development (the contextual knowledge);on the other hand, to enable effective access to information. Formal and contextual knowledge sets are mostly disjoint;however, there are cases in which a formal knowledge piece may be updated with some contextual information, constituting what we call the composite knowledge. In this paper, we extend a knowledge framework with the notion of composite knowledge, and use spatial hypertext to visualize this type of knowledge. We illustrate our proposal with a case study on accessing to information during an emergency response in an underground transportation system.

关键词： Knowledge management

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A case study on effectively identifying technical debt 13

A case study on effectively identifying technical debt

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17th International Conference on Evaluation and Assessment in software engineering, EASE 2013

作者： Zazworka, Nico Spínola, Rodrigo O. Vetro, Antonio Shull, Forrest Seaman, Carolyn Fraunhofer USA Center for Experimental Software Engineering College Park United States Graduate Program in Systems and Computer UNIFACS Salvador Brazil Dept. of Control and Computer Engineering Politecnico di Torino Torino Italy Department of Information Systems UMBC Baltimore United States Elsevier Information Systems GmbH Frankfurt Germany

ISBN: (纸本)9781450318488

Context: The technical debt (TD) concept describes a tradeoff between short-term and long-term goals in software development. While it is highly useful as a metaphor, it has utility beyond the facilitation of discussion, to inspire a useful set of methods and tools that support the identification, measurement, monitoring, management, and payment of TD. Objective: This study focuses on the identification of TD. We evaluate human elicitation of TD and compare it to automated identification. Method: We asked a development team to identify TD items in artifacts from a software project on which they were working. We provided the participants with a TD template and a short questionnaire. In addition, we also collected the output of three tools to automatically identify TD and compared it to the results of human elicitation. Results: There is little overlap between the TD reported by different developers, so aggregation, rather than consensus, is an appropriate way to combine TD reported by multiple developers. The tools used are especially useful for identifying defect debt but cannot help in identifying many other types of debt, so involving humans in the identification process is necessary. Conclusion: We have conducted a case study that focuses on the practical identification of TD, one area that could be facilitated by tools and techniques. It contributes to the TD landscape, which depicts an understanding of relationships between different types of debt and how they are best discovered. Copyright 2013 ACM.

关键词： software design

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Security Dynamics of Blockchain-Enabled SDN Systems: A Taxonomic Approach

Security Dynamics of Blockchain-Enabled SDN Systems: A Taxon...

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International Conference on Computer Science and engineering (UBMK)

作者： Deniz Dudukcu Murat Karakus Artificial Intelligence Technologies Graduate Program Ankara University Ankara Türkiye Department of Software Engineering Ankara University Ankara Turkiye

ISBN: (数字)9798350365887

ISBN: (纸本)9798350365894

In the current landscape, security challenges extend to various domains, such as IoT networking, UAV communication, and VANETs, rendering underlying infrastructures increasingly susceptible to cyber-attacks. The taxonomies, targets, and purposes of these attacks are closely linked to the properties of the underlying infrastructures. With the elevated vulnerability risks and attacks targeting specific elements of software Defined Networking (SDN), integrating blockchain technology into networking has emerged as a potential solution. However, this convergence of SDN and blockchain introduces new security risks. This position paper overviews blockchain-enhanced SDN systems focusing on security issues and reviews existing research and arguments. Notably, there is currently no agreed-upon established taxonomy for the integrated security of SDN and blockchain. As a contribution to the literature, this paper proposes a taxonomy for classifying security approaches within SDN and blockchain deployment scenarios. This taxonomy categorizes solutions based on defense mechanisms, defense planes, blockchain deployment types, and SDN deployment types. Additionally, we discuss the open issues and challenges at the intersection of SDN and blockchain technologies from a security perspective.

关键词： Computer science Reviews Taxonomy Focusing Rendering (computer graphics) Blockchains Security software defined networking Cyberattack Convergence

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IoT-Based Architecture for Data Analytics of Arboviruses in Smart Cities

IoT-Based Architecture for Data Analytics of Arboviruses in ...

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IEEE Symposium on Computers and Communications

作者： Priscylla da S. Tavares Emanuel B. Rodrigues Group of Computer Networks Software Engineering and Systems (GREat) Graduate Program in Computer Science (MDCC) Federal University of Ceará (UFC) Fortaleza Brazil

With the progress of sensor technologies, there has been an increase in the number of connected computing devices capable of collecting information and interacting with the environment in which they are inserted, forming the basis of the Internet of Things (IoT). Such devices enable the development of new applications capable of making cities more intelligent, providing improvements to society and urban infrastructure. As a result of the interaction between different applications, there is a large set of data, from which useful knowledge can be extracted. An important problem to be faced is the recurrent occurrence of arbovirus outbreaks in big cities with tropical climate. This research proposes an architecture capable of aggregating data from different types of IoT devices, and manipulating them using data analytics techniques to assist the surveillance of arbovirus outbreaks. As an example of case study, we present an exploratory analysis of climatology data and cases of arbovirus diseases in the city of Fortaleza, Ceara, Brazil, between the years of 2011 and 2017.

关键词： Internet of Things Data analytics Health care Smart city

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Investigating technical debt folklore: Shedding some light on technical debt opinion

Investigating technical debt folklore: Shedding some light o...

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2013 4th International Workshop on Managing Technical Debt, MTD 2013

作者： Spínola, Rodrigo O. Vetrò, Antonio Zazworka, Nico Seaman, Carolyn Shull, Forrest Graduate Program in Systems and Computer Universidade Salvador UNIFACS Salvador BA Brazil Dept. of Control and Computer Engineering Politecnico di Torino Torino Italy Elsevier Information Systems GmbH Frankfurt Germany Department of Information Systems UMBC Baltimore MD United States Fraunhofer USA Center for Experimental Software Engineering College Park United States

ISBN: (纸本)9781467364430

We identified and organized a number of statements about technical debt (TD Folklore list) expressed by practitioners in online websites, blogs and published papers. We chose 14 statements and we evaluated them through two surveys (37 practitioners answered the questionnaires), ranking them by agreement and consensus. The statements most agreed with show that TD is an important factor in software project management and not simply another term for 'bad code'. This study will help the research community in identifying folklore that can be translated into research questions to be investigated, thus targeting attempts to provide a scientific basis for TD management. © 2013 IEEE.

关键词： Surveys

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Blockchain technology in finance industry

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Transactions of the Korean Institute of Electrical Engineers 2019年第12期68卷 1601-1606页

作者： Youn, Seongwook Cho, Hyun-Chong Dept. of Software Korea National University of Transportation Korea Republic of Dept. of Electronics Engineering Interdisciplinary Graduate Program for BIT Medical Convergence Kangwon National University Korea Republic of

Blockchain is a peer-to-peer public ledger which guarantees the reliability of all the transactional record without a trusted third party. Basically, all the participants in the network create transactional record, examine the validity of the transaction, and keep the valid transactional record. The whole finance industry including banks and fintechs recognizes the value of the blockchain because of its efficiency and secure mechanism. In this paper, we explained the blockchain mechanism by providing its basic principles, strengths and weaknesses. Then, we provided what comes with it in the finance industry. Though there are still a few disadvantages such as persistence, and lack of the standard improvements and modifications in blockchain technology could overcome them and lead to the broader acceptance. Blockchain is definitely a disruptive technology in the financial system. Copyright © The Korean Institute of Electrical Engineers.

关键词： Smart contract

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Performance analysis of the Raft consensus algorithm on Hyperledger Fabric and Ethereum on cloud

Performance analysis of the Raft consensus algorithm on Hype...

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IEEE International Conference on Cloud Computing Technology and Science (CloudCom)

作者： João H. F. Battisti Vitor E. Batista Guilherme P. Koslovski Maurício A. Pillon Charles C. Miers Marco A. Marques Marcos Simplício Diego Kreutz Graduate Program in Applied Computing (PPGCAP) Santa Catarina State University (UDESC) Brazil Laboratory of Computer Networks and Architecture (LARC) Universidade de São Paulo (USP) Brazil Graduate Program in Software Engineering Federal University of Pampa (Unipampa) Brazil

The use of private or consortium blockchains in organizations’ applications is growing. A relevant aspect of blockchains is the choice of consensus mechanism. This decision delimits which blockchain solutions are suitable for the private scenario. Once the consensus mechanism is chosen, more than one blockchain may be enabled. However, this decision making is not trivial and requires detailed experimental indicators about algorithms and blockchains performance. In this context, we provide a comprehensive performance analysis of the Raft consensus mechanism based on its implementation in Hyperledger Fabric and Ethereum blockchain solutions. We performed our experiments on an OpenStack private cloud using each blockchain developer’s default settings for virtual machines. Our findings show how the implementation of each solution can impact the application’s performance under certain conditions.

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