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2nd International Conference on Sensor Technologies and Applications, SENSORCOMM 2008

作者： Senner, Tobias Karnapke, Reinhardt Lagemann, Andreas Nolte, Jörg Distributed Systems/Operating Systems Group Brandenburg University of Technology Cottbus Germany

ISBN: (纸本)9780769533308

In the near future, first responders such as firefighters might be supported by sensor nodes, both installed before the incident and placed by the responders themselves. To communicate with these sensor nodes, the first responders could be equipped with hand held devices, e.g. PDAs with wireless LAN, additionally equipped with a radio module of the same type as used by the sensor nodes. This scenario enables the usage of the PDAs as mobile communication backbone by the sensor nodes, as well as allowing the first responders to access nodes in the sensor network in an efficient way, both near and far. This paper presents aweighted routing protocol for heterogeneous networks, which could be used in such a scenario. © 2008 IEEE.

关键词： Sensor nodes

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Data augmentation for forecasting industrial aging processes via conditional multimodal generative time-series models

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Computers and Chemical Engineering 2025年 199卷

作者： Bogojeski, Mihail Yakut, Nataliya Nedelkoski, Sasho Nakajima, Shinichi Müller, Klaus-Robert Machine Learning Group Technische Universität Berlin Berlin10587 Germany BASF LudwigshafenSE 67056 Germany Distributed and Operating Systems Group Technische Universität Berlin Berlin10587 Germany BIFOLD-Berlin Institute for the Foundations of Learning and Data Berlin Germany RIKEN AIP 1-4-1 Nihonbashi Chuo-ku Tokyo Japan The Department of Artificial Intelligence Korea University Seoul136-713 Korea Republic of The Max Planck Institute for Informatics Saarbrücken Germany

Data augmentation has shown to be effective for improving generalization performance of deep neural networks, especially in the regime of high noise and scarce data. However, this approach has not been applied to industrial aging processes (IAP) forecasting, where observed data are multimodal time-series, and therefore existing augmentation methods are not suitable for data generation. In this paper, we propose Seq-MVAE, a generative architecture that can generate complex time-series data consisting of multiple heterogeneous modalities. Seq-MVAE is capable of conditional generation, i.e., Seq-MVAE learns the joint distribution across the modalities, and allows users to generate a part of the modalities that are coherent with the other (given) modalities. This enables not only missing value imputation but also conditional generation, which is known to be crucial for data augmentation. We evaluate the generative performance and other aspects of Seq-MVAE on an artificial dataset generated based designed to simulate an industrial aging process, and show the effectiveness of data augmentation by Seq-MVAE on a real-world dataset acquired from an industrial plant. © 2025 The Authors

关键词： Deep neural networks

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BuckshotDV - A robust routing protocol for wireless sensor networks with unstable network topologies and unidirectional links 8

BuckshotDV - A robust routing protocol for wireless sensor n...

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8th International Conference on Sensor Technologies and Applications, SENSORCOMM 2014

作者： Karnapke, Reinhardt Nolte, Jörg Distributed Systems/Operating Systems Group Brandenburg University of Technology Cottbus - Senftenberg Cottbus Germany

Experiments have shown that the number of asymmetric and unidirectional links often exceeds the number of bidirectional ones, especially in the transitional area of the communication range of wireless sensor nodes. Still, most of today's routing protocols ignore their existence or try to remove their implications. Also, links are not stable over time, and routes become unusable often, resulting in a need for new routing protocols that can handle highly dynamic links and use unidirectional links to their advantage. In this paper, we present BuckshotDV, a routing protocol which is resilient against link fluctuations and uses the longer reach of unidirectional links to increase its performance. Furthermore, its distance vector nature makes it scalable for large sensor networks. Copyright © (2014) by International Academy.

关键词： Routing protocols

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Design by uncertainty: Towards the use of measurement uncertainty in real-time systems

Design by uncertainty: Towards the use of measurement uncert...

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7th IEEE International Symposium on Industrial Embedded systems, SIES 2012

作者： Ulbrich, Peter Franzmann, Florian Scheler, Fabian Schröder-Preikschat, Wolfgang Department of Distributed Systems and Operating Systems Friedrich-Alexander University Erlangen-Nuremberg Erlangen Germany

ISBN: (纸本)9781467326841

Real-time systems usually incorporate a wide variety of challenges: A control engineer, for example, aims for the highest possible control quality achievable. Here, one key element is to minimise the uncertainty of the measurements. This, to put it simple, is the noise of sensor data, which has a negative effect on control. Although measurement uncertainty is well treated in control theory, it is usually ignored in common real-time architectures where temporal properties are the prevalent criteria. Consequently, the communication between control engineers and real-time specialists is rather one way, revolving around deadlines and sampling periods. However, on closer examination, many real-time properties are derived from the measurement uncertainty aspired by the control engineer. Conversely, temporal variations, virtually inevitable in practice, can be represented as measurement uncertainty as well. Tackling the measurement uncertainty should therefore be an interdisciplinary task: The control system respects the actual run-time conditions instead of estimating them. Likewise, the real-time system considers measurement uncertainty rather than blindly sticking to deadlines. In this paper we present an uncertainty-centric approach to leverage measurement uncertainty in real-time architectures, not only at design time but also at run-time. Using measurement uncertainty as an explicit interface minimises the gap between real-time specialists and control engineers and facilitates a modular and flexible system design. Our preliminary results are promising and show the ease of use and the applicability to existing systems. © 2012 IEEE.

关键词： Real time systems

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Unified Enclave Abstraction and Secure Enclave Migration on Heterogeneous Security Architectures

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Journal of Computer Science & Technology 2022年第2期37卷 468-486页

作者： Jin-Yu Gu Hao Li Yu-Bin Xia Hai-Bo Chen Cheng-Gang Qin Zheng-Yu He Engineering Research Center for Domain-Specific Operating Systems Ministry of EducationShanghai 200240China Institute of Parallel and Distributed Systems Shanghai Jiao Tong UniversityShanghai 200240China Ant Group Hangzhou 310099China

ion and secure enclave migration on heterogeneous security architectures.

关键词： heterogeneous trusted execution environment(TEE) enclave abstraction enclave migration

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Lean and efficient system software product lines: Where aspects beat objects

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Transactions on Aspect-Oriented Software Development II

作者： Lohmann, Daniel Spinczyk, Olaf Schröder-Preikschat, Wolfgang Friedrich-Alexander-University Erlangen-Nuremberg Computer Science 4 Distributed Systems and Operating Systems Germany

ISBN: (纸本)3540488901

Software development in the domain of embedded and deeply embedded systems is dominated by cost pressure and extremely limited hardware resources. As a result, modern concepts for separation of concerns and software reuse are widely ignored, as developers worry about the thereby induced memory and performance overhead. Especially object-oriented programming (OOP) is still little in demand. For the development of highly configurable fine-grained system software product lines, however, separation of concerns (SoC) is a crucial property. As the overhead of object-orientation is not acceptable in this domain, we propose aspect-oriented programming (AOP) as an alternative. Compared to OOP, AOP makes it possible to reach similar or even better separation of concerns with significantly smaller memory footprints. In a case study for an embedded system product line the memory costs for SoC could be reduced from 148-236% to 2-10% by using AOP instead of OOP. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Computer software

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Software-in-the-loop simulation for developing and testing carbon-aware applications

Software-in-the-loop simulation for developing and testing c...

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作者： Wiesner, Philipp Steinke, Marvin Nickel, Henrik Kitana, Yazan Kao, Odej Distributed and Operating Systems Technische Universität Berlin Berlin Germany

The growing electricity demand of IT infrastructure has raised significant concerns about its carbon footprint. To mitigate the associated emissions of computing systems, current efforts therefore increasingly focus on aligning the power usage of software with the availability of clean energy. To operate, such carbon-aware applications require visibility and control over relevant metrics and configurations of the energy system. However, research and development of novel energy system abstraction layers and interfaces remain difficult due to the scarcity of available testing environments: Real testbeds are expensive to build and maintain, while existing simulation testbeds are unable to interact with real computing systems. To provide a widely applicable approach for developing and testing carbon-aware software, we propose a method for integrating real applications into a simulated energy system through software-in-the-loop simulation. The integration offers an API for accessing the energy system, while continuously modeling the computing system's power demand within the simulation. Our system allows for the integration of physical as well as virtual compute nodes, and can help accelerate research on carbon-aware computing systems in the future. © 2023 The Authors. Software: Practice and Experience published by John Wiley & Sons Ltd.

关键词： Carbon footprint

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Automatic fault detection using cause and effect rules for in-vehicle networks 4

Automatic fault detection using cause and effect rules for i...

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4th International Conference on Vehicle Technology and Intelligent Transport systems, VEHITS 2018

作者： Kordes, Alexander Wurm, Sebastian Hozhabrpour, Hawzhin Wismüller, Roland Operating Systems and Distributed Systems University of Siegen Hölderlinstraße 3 SiegenNRW Germany

ISBN: (纸本)9789897582936

In-vehicle networks (IVNs) connect Electronic Control Units (ECUs) for automotive applications. Most of the communication on the IVNs directly affect the comfort or even the safety of the driver. Therefore, it is necessary to monitor these systems in order to find the cause and effect of a fault. Current developments use plausibility checks in automotive ECUs to enhance safety and security. Within the LEICAR project in cooperation with INVERS GmbH we focus on all sensors signals recorded directly from CAN bus IVNs for this positional paper. Even without the knowledge of the sensors semantics it is possible to extract cause and effect rules for all recorded sensor signal relationships of the vehicle, map them in a graph and extract certain situations. The proposed solution detects direct and slowly evolving changes even if they propagate across several involved sensor values. For the automatic fault containment we extract features from the cause and effect rules to train a machine learning model in order to make predictions on new data. Besides that it is possible to implement optimized error checking procedures for the involved ECUs. Copyright © 2018 by SCITEPRESS – Science and Technology Publications, Lda. All rights reserved

关键词： Fault detection

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From sensibility to responsibility: The impact of system software on ecological and economical sustainability of computing systems 45

From sensibility to responsibility: The impact of system sof...

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45. Jahrestagung der Gesellschaft fur Informatik: Informatik, Energie und Umwelt, INFORMATIK 2015 - 45th Annual Meeting of the German Informatics Society: Computer Science, Energy and Environment, INFORMATIK 2015

作者： Honig, Timo Department of Computer Science Distributed Systems and Operating Systems Martensstr. 1 ErlangenD-91058 Germany

ISBN: (纸本)9783885796404

From an ecological and economic perspective, saving energy is an important factor for the design of today's computing systems. However, building energy-efficient systems is a challenging task for system designers. It requires exact knowledge about the system's components (i.e., software and hardware components) and it is not immediately obvious how the energy demand of a system can be improved. This paper presents energy-aware programming techniques that help developers at optimizing the energy demand of software. Such techniques address sensibility aspects (i.e., energy awareness) and provide optimization suggestions to developers. The paper further discusses responsibility aspects that emerge from the advent of energy-aware programming techniques.

关键词： Software design

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Implicit sleep mode determination in power management of event-driven deeply embedded systems

Implicit sleep mode determination in power management of eve...

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7th International Conference on Wired/Wireless Internet Communications, WWIC 2009

作者： Sieber, André Walther, Karsten Nürnberger, Stefan Jörg, Nolte Distributed Systems/Operating Systems Group BTU Cottbus Konrad-Wachsmann-Allee 1 Cottbus 03046 Germany

ISBN: (纸本)3642021174

Energy consumption is a crucial factor for the lifetime of many embedded systems, especially wireless sensor networks. Most modern microcontrollers provide various low power sleep modes. Utilizing them can lead to great energy savings. In this paper we present an approach for power management in embedded systems, based on the event-driven operating system Reflex. The implicit power management is mostly hardware independent, lightweight and efficiently chooses the optimal power saving mode of the microprocessor automatically. © 2009 Springer Berlin Heidelberg.

关键词： Energy utilization

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