it - Information Technology
it - Information Technology is a strictly peer-reviewed scientific journal. It is the oldest German journal in the field of information technology. Today, the major aim of it - Information Technology is highlighting issues on ongoing newsworthy areas in information technology and informatics and their application. It aims at presenting the topics with a holistic view. It addresses scientists, graduate students, and experts in industrial research and development.
it - Information Technology is the organ of the faculties Technical Informatics and Computer Science in the Life Sciences of the German Informatics Society (GI - Gesellschaft für Informatik e.V.) and faculty Technical Informatics of the Information Technology Society (ITG) within the VDE (Verband der Elektrotechnik, Elektronik und Informationstechnik e.V.).
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- Zeitschriftenartikel64-Bit Migration Vulnerabilities(it - Information Technology: Vol. 59, No. 5, 2017) Wressnegger, Christian; Yamaguchi, Fabian; Maier, Alwin; Rieck, KonradThe subtleties of correctly processing integers confronts developers with a multitude of pitfalls that frequently result in severe software vulnerabilities. Unfortunately, even code shown to be secure on one platform can be vulnerable on another, such that also the migration of code itself is a notable security challenge.
- ZeitschriftenartikelAbstraction NBTI model(it - Information Technology: Vol. 63, No. 4, 2021) Adolf, Stephan; Nebel, WolfgangNegative Bias Temperature Instability (NBTI) is one of the major transistor aging effects, possibly leading to timing failures during run-time of a system. Thus one is interested in predicting this effect during design time. In this work an Abstraction NBTI model is introduced reducing the state space of trap-based NBTI models using two abstraction parameters, applying a state transformation to incorporate variable stress conditions. This transformation is faster than traditional approaches. Currently the conversion into estimated threshold voltage damages is a very time consuming process.
- ZeitschriftenartikelAdapting visualizations and interfaces to the user(it - Information Technology: Vol. 64, No. 4-5, 2022) Chiossi, Francesco; Zagermann, Johannes; Karolus, Jakob; Rodrigues, Nils; Balestrucci, Priscilla; Weiskopf, Daniel; Ehinger, Benedikt; Feuchtner, Tiare; Reiterer, Harald; Chuang, Lewis L.; Ernst, Marc; Bulling, Andreas; Mayer, Sven; Schmidt, AlbrechtAdaptive visualization and interfaces pervade our everyday tasks to improve interaction from the point of view of user performance and experience. This approach allows using several user inputs, whether physiological, behavioral, qualitative, or multimodal combinations, to enhance the interaction. Due to the multitude of approaches, we outline the current research trends of inputs used to adapt visualizations and user interfaces. Moreover, we discuss methodological approaches used in mixed reality, physiological computing, visual analytics, and proficiency-aware systems. With this work, we provide an overview of the current research in adaptive systems.
- ZeitschriftenartikelAdvanced data handling architecture for earth observation satellites(it - Information Technology: Vol. 63, No. 4, 2021) Bolzler, Julian; Herpel, Hans Juergen; Johansson, Jan; Gasti, Wahida; Mourra, OlivierIn this paper we describe how commercial open standards for embedded systems could affect the architecture of future satellite data handling systems. Traditionally, satellite data handling systems are based on the principles of a federated architecture, i. e. one function is implemented as one box. Each box has its own housing and power supply. In the paper we describe the transition path from the traditional federated architecture to a centralized but modular architecture based on adapted industrial standards. In the presented approach functional modules like on-board computer, Global Navigation Satellite System receiver, interface boards, etc. are combined in a rack communicating via a standard backplane using standardized communication links. The analysis performed during the Advanced Data Handling Architecture study showed that this approach contributes significantly to mass and power reduction (approx. 20 %) of a typical satellite data handling system. Another major point highlighted in the Advanced Data Handling Architecture study is the simplification of Assembly, Integration and Test activities. All this will help space industry to handle increasing system complexity while keeping costs at an acceptable level.
- ZeitschriftenartikelAdvanced tools and methods for treewidth-based problem solving(it - Information Technology: Vol. 65, No. 1-2, 2023) Hecher, MarkusComputer programs, so-called solvers, for solving the well-known Boolean satisfiability problem (Sat) have been improving for decades. Among the reasons, why these solvers are so fast, is the implicit usage of the formula’s structural properties during solving. One of such structural indicators is the so-called treewidth, which tries to measure how close a formula instance is to being easy (tree-like). This work focuses on logic-based problems and treewidth-based methods and tools for solving them. Many of these problems are also relevant for knowledge representation and reasoning (KR) as well as artificial intelligence (AI) in general. We present a new type of problem reduction, which is referred to by decomposition-guided (DG). This reduction type forms the basis to solve a problem for quantified Boolean formulas (QBFs) of bounded treewidth that has been open since 2004. The solution of this problem then gives rise to a new methodology for proving precise lower bounds for a range of further formalisms in logic, KR, and AI. Despite the established lower bounds, we implement an algorithm for solving extensions of Sat efficiently, by directly using treewidth. Our implementation is based on finding abstractions of instances, which are then incrementally refined in the process. Thereby, our observations confirm that treewidth is an important measure that should be considered in the design of modern solvers.
- ZeitschriftenartikelAdvances in digital pottery analysis(it - Information Technology: Vol. 64, No. 6, 2022) Karl, Stephan; Houska, Peter; Lengauer, Stefan; Haring, Jessica; Trinkl, Elisabeth; Preiner, ReinholdRapid progress in digitisation and computer techniques have enabled noteworthy new pottery analysis applications in recent decades. We focus on analytical techniques directed specifically at archaeological pottery research in this survey and review the specific benefits these have brought in the field. We consider techniques based on heterogeneous sources such as drawings, photographs, 3D scans and CT volume data. The various approaches and methods are structured according to the main steps in pottery processing in archaeology: documentation, classification and retrieval. Within these categories we review the most relevant papers and identify their advantages and limitations. We evaluate both freely and commercially available analysis tools and databases. Finally, we discuss open problems and future challenges in the field of pottery analysis.
- ZeitschriftenartikelAirborne LiDAR data in landscape archaeology. An introduction for non-archaeologists(it - Information Technology: Vol. 64, No. 6, 2022) Štular, Benjamin; Lozić, EdisaThe use of airborne LiDAR data has become an essential component of landscape archaeology. This review article provides an understandable introduction to airborne LiDAR data processing specific to archaeology with a holistic view from a technical perspective. It is aimed primarily at researchers, students, and experts whose primary field of study is not archaeology. The article first outlines what the archaeological interest in airborne LiDAR data is and how the data processing workflow is archaeology-specific. The article emphasises that the processing workflow is riddled with archaeology-specific details and presents the key processing steps. These are, in order of their impact on the final result, enhanced visualisation, manual reclassification, filtering of ground points, and interpolation. If a single most important characteristic of airborne LiDAR data processing for archaeology is to be emphasised, it is that archaeologists need an archaeology-specific DEM for their work.
- ZeitschriftenartikelAlgorithms for Big Data(it - Information Technology: Vol. 62, No. 3-4, 2020) Meyer, Ulrich; Abedjan, ZiawaschArticle Algorithms for Big Data was published on June 1, 2020 in the journal it - Information Technology (volume 62, issue 3-4).
- ZeitschriftenartikelAPP4MC: Application platform project for multi- and many-core systems(it - Information Technology: Vol. 59, No. 5, 2017) Höttger, Robert; Mackamul, Harald; Sailer, Andreas; Steghöfer, Jan-Philipp; Tessmer, JörgSince especially the automotive domain increasingly utilizes multi- and many-core systems, appropriate models, analyses, and tooling are required to address challenges that were nearly non existent so far. APP4MC is an open source Eclipse platform that provides AUTOSAR compliant common data models namely AMALTHEA, basic parallelization features, visualizations, and the great possibility to add any existing tooling. For example, Eclipse Capra can be added to provide comprehensive traceability throughout the development processes but any proprietary, commercial, open-source, or prototypical implementations can be integrated. The platform enables the creation and management of complex tool chains including performance simulation and validation. The entire community benefits from reduced hardware costs, faster time to market, higher quality systems, and rapid adoption. APP4MC is not retricted to the automotive domain and utilizable in robotics or generic real-time systems as well.
- ZeitschriftenartikelApplication of blockchain technology(it - Information Technology: Vol. 60, No. 5-6, 2018) Mueller, PaulArticle Application of blockchain technology was published on December 1, 2018 in the journal it - Information Technology (volume 60, issue 5-6).