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Privacy framework for context-aware robot development

Paladyn 2021年第1期12卷 468-480页

作者： Heuer, Tanja Schiering, Ina Gerndt, Reinhard Department of Computer Science Ostfalia University of Applied Sciences Institute of Information Engineering Wolfenbüttel Germany Department of Computer Science Ostfalia University of Applied Sciences Institute of Distributed Systems Wolfenbüttel Germany

Privacy is an essential topic in (social) robotics and becomes even more important when considering interactive and autonomous robots within the domestic environment. Robots will collect a lot of personal and sensitive information about the users and their environment. Thereby, privacy does consider the topic of (cyber-)security and the protection of information against misuse by involved service providers. So far, the main focus relies on theoretical concepts to propose privacy principles for robots. This article provides a privacy framework as a feasible approach to consider security and privacy issues as a basis. Thereby, the proposed privacy framework is put in the context of a user-centered design approach to highlight the correlation between the design process steps and the steps of the privacy framework. Furthermore, this article introduces feasible privacy methodologies for privacy-enhancing development to simplify the risk assessment and meet the privacy principles. Even though user participation plays an essential role in robot development, this is not the focus of this article. Even though user participation plays an essential role in robot development, this is not the focus of this article. The employed privacy methodologies are showcased in a use case of a robot as an interaction partner contrasting two different use case scenarios to encourage the importance of context awareness. © 2021 Tanja Heuer et al., published by De Gruyter.

关键词： Machine design

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Network dimensioning for the self-protecting multipath: A performance study

Network dimensioning for the self-protecting multipath: A pe...

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2006 IEEE International Conference on Communications, ICC 2006

作者： Menth, Michael Martin, Ruediger Spoerlein, Ulrich Department of Distributed Systems Institute of Computer Science University of Würzburg Germany

ISBN: (纸本)1424403553

The self-protecting multipath (SPM) is a simple protection switching mechanism that can be implemented, e.g., by MPLS. We present a linear program to optimize the SPM load balancing parameters for network dimensioning. Our study shows that the SPM is a very efficient mechanism in the sense that it requires only little backup capacity since it outperforms the p-cycle approach and the shortest path rerouting by far. The investigation of the computation time and the memory consumption recommends the Simplex method as an LP solver rather than an interior point method (IPM). The computation time of the program depends mainly on the number of links in the network and it is well feasible for small and and medium size networks. For large networks, however, fast heuristics are required. © 2006 IEEE.

关键词： Multipath propagation

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Analysis of the message waiting time for the FioranoMQ JMS server

Analysis of the message waiting time for the FioranoMQ JMS s...

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26th IEEE Internationa26th IEEE International Conference on distributed Computing systems, ICDCS 2006

作者： Menth, Michael Henjes, Robert Department of Distributed Systems Institute of Computer Science University of Würzburg Germany

ISBN: (纸本)0769525407

The Java messaging service (JMS) is a means to organize communication among distributed applications according to the publish/subscribe principle. If the subscribers install filter rules on the JMS server, JMS can be used as a message routing platform, but it is not clear whether its message throughput is sufficiently high to support large-scale systems. We perform measurements for the FioranoMQ JMS server and derive a simple model for its message processing time that takes message filters and the message replication grade into account. Then, we analyze the JMS server capacity and the message waiting time for various application scenarios. We show that the message waiting time is not an issue as long as the server throughput is sufficiently high. Finally, we assess the capacity of two different distributed JMS architectures whose objective is to increase the capacity of the JMS beyond the limit of a single server. © 2006 IEEE.

关键词： Servers

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A semantic framework for test coverage

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4th International Symposium on Automated Technology for Verification and Analysis, ATVA 2006

作者： Brandán Briones, Laura Brinksma, E. Stoelinga, Mariëlle Faculty of Computer Science University of Twente Netherlands Embedded Systems Institute Netherlands

ISBN: (纸本)3540472371

Since testing is inherently incomplete, test selection has vital importance. Coverage measures evaluate the quality of a test suite and help the tester select test cases with maximal impact at minimum cost. Existing coverage criteria for test suites are usually defined in terms of syntactic characteristics of the implementation under test or its specification. Typical black-box coverage metrics are state and transition coverage of the specification. White-box testing often considers statement, condition and path coverage. A disadvantage of this syntactic approach is that different coverage figures are assigned to systems that are behaviorally equivalent, but syntactically different. Moreover, those coverage metrics do not take into account that certain failures are more severe than others, and that more testing effort should be devoted to uncover the most important bugs, while less critical system parts can be tested less thoroughly. This paper introduces a semantic approach to black box test coverage. Our starting point is a weighted fault model (or WFM), which augments a specification by assigning a weight to each error that may occur in an implementation. We define a framework to express coverage measures that express how well a test suite covers such a specification, taking into account the error weight. Since our notions are semantic, they are insensitive to replacing a specification by one with equivalent behaviour. We present several algorithms that, given a certain minimality criterion, compute a minimal test suite with maximal coverage. These algorithms work on a syntactic representation of WFMs as fault automata. They are based on existing and novel optimization problems. Finally, we illustrate our approach by analyzing and comparing a number of test suites for a chat protocol. © Springer-Verlag Berlin Heidelberg 2006.

关键词： computer systems

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Throughput performance of java messaging services using websphereMQ

Throughput performance of java messaging services using webs...

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26th IEEE International Conference on distributed Computing systems Workshops, ICDCS 2006

作者： Henjes, Robert Menth, Michael Zepfel, Christian Department of Distributed Systems Institute of Computer Science University of Würzburg Germany

ISBN: (纸本)0769525415

The Java messaging service (JMS) is a middleware-oriented messaging technology working according to the publish/subscribe principle. If subscribers install filter rules on the JMS server, JMS can be used as a message routing platform, but it is not clear whether its message throughput is sufficiently high to support large-scale systems. In this paper we investigate the capacity of the Websphere Message Queue JMS server. In contrast to other studies, we focus on the message throughput in the presence of filters and show that filtering reduces the performance significantly. We also present a model that describes the service time for a single message depending on the number of installed filters and validate it by measurements. This model helps to calculate the system throughput for specific application scenarios. © 2006 IEEE.

关键词： Middleware

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Generating activity streams from events occurring in company-internal IT infrastructures

Generating activity streams from events occurring in company...

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2011 IEEE 13th International Conference on Communication Technology, ICCT 2011

作者： Khaled Reza, S.M. Mohsin Reza, S.M. Distributed Systems Engineering Faculty of Computer Science Dresden University of Technology Dresden Germany Embedded Systems Engineering Faculty of Computer Science Electrical Engineering and Information Technology University of Stuttgart Germany

ISBN: (纸本)9781612843070

In the current era of technology, the Internet and web technologies become the center source of information. Due to the huge amount of contents, one of the main challenges of modern information technology is aimed at how to reduce and manage information in a structured way with mobilizing users to the similar kind of relevant information. So, any intelligent system should be able to understand people's interest about a particular type of information and automatically mobilize him to the similar kind of available information sources. The idea of high level Activity Streams along with its standardized format can play a vital role to solve this problem in the broader context. This paper introduces a novel system called CoASGen (Consolidation and Activity Streams Generator) which is able to automatically generate high level Activity Streams after aggregating and consolidating from different independent systems (e.g. in a software company context: version management system, wikis, bug trackers etc.). It retrieves life time information as heterogeneous web feed by sensing user activities from those independent systems and then it transforms several similar types of atomic activities into high level Activity Streams using semantic technologies along with its specific standardized format. Finally, it shows these high level Activity Streams to the user interface which is able to automatically motivate users to find relevant information easily without either missing any data or losing valuable time. This system solves the problem "data silos" by reducing and managing information in a structured way. © 2011 IEEE.

关键词： Intelligent systems

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Towards declarative query scoping in sensor networks

Towards declarative query scoping in sensor networks

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作者： Jacobi, Daniel Guerrero, Pablo E. Nawaz, Khalid Seeger, Christian Herzog, Arthur Van Laerhoven, Kristof Petrov, Ilia Databases and Distributed Systems Group Dept. of Computer Science Technische Universität Darmstadt Germany Embedded Sensing Systems Dept. of Computer Science Technische Universität Darmstadt Germany

ISBN: (纸本)3642172253

In the last decade, several large-scale wireless sensor networks have been deployed to monitor a variety of environments. The declarative nature of the database approach for accessing sensor data has gained great popularity because of both its simplicity and its energy-efficient implementation. At the same time another declarative abstraction made its way into mainstream sensor network deployments: user-defined groups of nodes. By restricting the set of nodes that participate in a task to such a group, the overall network lifetime can be prolonged. It is straightforward to see that integrating these two approaches, that is, restricting a query's scope to a group of sensor nodes, is beneficial. In this work we explore the integration of two such database and scoping technologies: TikiDB, a modern reincarnation of a sensor network query processor, and Scopes, a network-wide grouping mechanism. © 2010 Springer-Verlag Berlin Heidelberg.

关键词： Sensor nodes

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Modeling semantic web services using UML 2

Modeling semantic web services using UML 2

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3rd International Workshop on Model-Driven Enterprise Information systems - MDEIS 2007;In Conjunction with ICEIS 2007

作者： Lautenbacher, Florian Bauer, Bemhard Programming Distributed Systems Lab. Institute of Computer Science University of Augsburg Germany

ISBN: (纸本)9789898111005

The development of web services and especially semantic web services is a tremendous task for people who are not familiar with all language constructs. Especially with the growing mass of several semantic web service approaches a language-independent service development is needed. This gap can be filled by using model-driven software development. Therefore, in this paper we introduce a meta-model for semantic web services and show the benefits of automatic code generation on the basis of a small example.

关键词： Web services

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An approach to quality engineering of TTCN-3 test specifications

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International Journal on Software Tools for Technology Transfer 2008年第4期10卷 309-326页

作者： Neukirchen, Helmut Zeiss, Benjamin Grabowski, Jens Software Engineering for Distributed Systems Group Institute for Computer Science University of Göttingen Lotzestr. 16-18 Göttingen 37083 Germany

Experience with the development and maintenance of large test suites specified using the Testing and Test Control Notation (TTCN-3) has shown that it is difficult to construct tests that are concise with respect to quality aspects such as maintainability or usability. The ISO/IEC standard 9126 defines a general software quality model that substantiates the term "quality" with characteristics and subcharacteristics. The domain of test specifications, however, requires an adaption of this general model. To apply it to specific languages such as TTCN-3, it needs to be instantiated. In this paper, we present an instantiation of this model as well as an approach to assess and improve test specifications. The assessment is based on metrics and the identification of code smells. The quality improvement is based on refactoring. Example measurements using our TTCN-3 tool TRex demonstrate how this procedure is applied in practise. © Springer-Verlag 2008.

关键词： computer software selection and evaluation

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Instant-X: Towards a generic API for multimedia middleware

Instant-X: Towards a generic API for multimedia middleware

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2009 IEEE International Conference on Internet Multimedia Services Architecture and Applications, IMSAA 2009

作者： Elsholz, Jan-Patrick Schmidt, Holger Schober, Sven Hauck, Franz J. Kassler, Andreas Institute of Distributed Systems Ulm University Germany Computer Science Department Karlstads Universitet Sweden

ISBN: (纸本)9781424447923

The globalisation of our society leads to an increasing need for spontaneous communication. However, the development of such applications is a tedious and error-prone process. This results from the fact that in general only basic functionality is available in terms of protocol implementations and encoders/decoders. This leads to inflexible proprietary software systems implementing unavailable functionality on their own. In this work we introduce Instant-X, a novel component-based middleware platform for multimedia applications. Unlike related work, Instant-X provides a generic programming model with an API for essential tasks of multimedia applications with respect to signalling and data transmission. This API abstracts from concrete component implementations and thus allows replacing specific protocol implementations without changing the application code. Furthermore, Instant-X supports dynamic deployment, i.e., unavailable components can be automatically loaded at runtime. To show the feasibility of our approach we evaluated our Instant-X prototype regarding code complexity and performance. ©2009 IEEE.

关键词： Middleware

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