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19th IEEE International Conference on Software Quality, Reliability and Security (QRS)

作者： Scheibmeir, Jim Malaiya, Yashwant K. Colorado State Univ Ft Collins CO 80523 USA

ISBN: (纸本)9781728139258

Digital twins are software implementations of their physical counterparts. These software representations act through application program interfaces (APIs) to the physical devices they monitor, engage with and possibly control. Here a development model is proposed to ensure the desired reliability and performance of the API which is critical to the overall success of the Digital Twin.

关键词： application programming interface API Digital twin test automation software quality

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Mobile Edge Assistance Information for Radio Access Network Optimization 10

Mobile Edge Assistance Information for Radio Access Network ...

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10th IFIP International Conference on New Technologies, Mobility and Security (NTMS)

作者： Atanasov, Ivaylo Pencheva, Evelina Asenov, Ivaylo Tech Univ Sofia Fac Telecommun Sofia Bulgaria

ISBN: (纸本)9781728115429

Fifth generation (5G) networks are expected to incorporate more intelligence in order to predict the traffic and mobility patterns and to optimize the performance. Multi-access-Edge Computing may contribute to performance optimization by distributing cloud computing and storage capabilities in the vicinity to end users. In this paper, we propose a new mobile edge service which enables external applications to provide information about foreseen or expected User Equipment (UE) activity and mobility. The applications may gather radio network and location information to calculate UE behavior patterns and to send to the network information that may help to optimize resource management procedures.

关键词： Edge Computing application programming interface Data model State machines

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Bridging the Technology Gap between Industry and Semantic Web: Generating Databases and Server Code from RDF 13

Bridging the Technology Gap between Industry and Semantic We...

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13th International Conference on Agents and Artificial Intelligence (ICAART)

作者： Schroeder, Markus Schulze, Michael Jilek, Christian Dengel, Andreas DFKI GmbH Smart Data & Knowledge Serv Dept Kaiserslautern Germany TU Kaiserslautern Comp Sci Dept Kaiserslautern Germany

ISBN: (纸本)9789897584848

Despite great advances in the area of Semantic Web, industry rather seldom adopts Semantic Web technologies and their storage and query approaches. Instead, relational databases (RDB) are often deployed to store business-critical data, which are accessed via REST interfaces. Yet, some enterprises would greatly benefit from Semantic Web related datasets which are usually represented with the Resource Description Framework (RDF). To bridge this technology gap, we propose a fully automatic approach that generates suitable RDB models with REST APIs to access them. In our evaluation, generated databases from different RDF datasets are examined and compared. Our findings show that the databases sufficiently reflect their counterparts while the API is able to reproduce rather simple SPARQL queries. Potentials for improvements are identified, for example, the reduction of data redundancies in generated databases.

关键词： Database Generator Resource Description Framework Relational Database Create Read Update Delete Representational State Transfer application programming interface

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HEGEL: a high-fidelity flexible software for hypersonics and plasma simulations

HEGEL: a high-fidelity flexible software for hypersonics and...

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AIAA SciTech Forum

作者： Munafo, Alessandro Kumar, Sajeev Jo, Sung Min Panesi, Marco Univ Illinois Ctr Hyperson & Entry Syst Studies Urbana IL 61801 USA Korea Adv Inst Sci & Technol Daejeon South Korea

ISBN: (数字)9781624107115

ISBN: (纸本)9781624107115

This work describes HEGEL (High-fidElity tool for maGnEto-gasdynamics simuLations) a high-fidelity and flexible software for hypersonics and plasma simulations. HEGEL is written in object-oriented fashion using modern Fortran 2008, and may be interfaced with other solvers for multi-physics calculations (e.g., plasma wind tunnel). The governing equations are discretized in space based on the cell-centered finite volume method. Time integration may be accomplished using explicit, implicit or implicit-explicit methods. Parallelization is realized through the combined use of MPI and PETSC libraries. For the purpose of a flexible implementation, the solver is designed by minimizing the dependency on the details of the fluid model, a feature which allows for treating calorically perfect gases, combustible mixtures as well as multi-component plasmas under either equilibrium or non-equilibrium conditions within the same tool. application examples are here presented to show the main capabilities of the solver.

关键词： Hypersonics Roe Approximate Riemann Solver Plasma Wind Tunnel application programming interface Kelvin Helmholtz Instability Finite Volume Method Freestream Conditions Taylor Green Vortex Computational Fluid Dynamics Thermodynamic Equilibrium

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The English Dialects App: The creation of a crowdsourced dialect corpus

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Ampersand 2018年 5卷 1-17页

作者： Leemann, Adrian Kolly, Marie-José Britain, David Department of Linguistics and English Language Lancaster University County South Lancaster LA1 4YL United Kingdom Phonetics Laboratory Department of Comparative Linguistics University of Zurich Plattenstrasse 54 Zürich 8032 Switzerland Department of English University of Bern Länggassstrasse 49 Bern 3012 Switzerland

In this paper, we present the English Dialects App (EDA) and the English Dialects App Corpus (EDAC). EDA is a free iOS and Android app, launched in January 2016 that features a dialect quiz and dialect recordings. For the quiz, users indicate which variants of 26 words they use and the application guesses their local dialect;for the recordings, users can record a short text. The result is EDAC which includes metadata on mobility, ethnicity, age, educational level, and gender. More than 47,000 users from across the UK have indicated dialect variants for these 26 words, and more than 3,500 users have provided audio recordings. Unavoidably, EDAC does not successfully reflect distributions of age, ethnicity, qualification levels, and other parameters found for the UK population given that smartphone-based research reaches a specific stratum of the population. Yet there are also clear benefits to the sampling strategy used – benefits and pitfalls are discussed in this article. Future analyses will provide the most comprehensive understanding of English regional dialect variation since the work of the traditional dialectologists. We showcase two such analyses in this article. EDAC should, we demonstrate, be of interest to researchers in dialectology but also in forensic phonetics. © 2017 The Authors

关键词： API application programming interface BKA German Federal Criminal Police Office BNC British National Corpus EDA English Dialects App EDAC English Dialects App Corpus FRED Freiburg English Dialect corpus ICE International Corpus of English NORMs non-mobile, older, rural, male speakers ONS Office for National Statistics SED Survey of English Dialects

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Development and application of a Heuristic to Assess Trends in API Documentation 12

Development and Application of a Heuristic to Assess Trends ...

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30th ACM International Conference on Design of Communication (SIGDOC)

作者： Watson, Robert Univ Washington Seattle WA 98195 USA

ISBN: (纸本)9781450314978

Computer technology has made amazing advances in the past few decades;however, the software documentation of today still looks strikingly similar to the software documentation used 30 years ago. If this continues into the 21st century, more and more software developers could be using 20th-century-style documentation to solve 21st-century problems with 21st-century technologies. Is 20th-century-style documentation up to the challenge? How can that be measured? This paper seeks to answer those questions by developing a heuristic to identify whether the documentation set for an application programming interface (API) contains the key elements of API reference documentation that help software developers learn an API. The resulting heuristic was tested on a collection of software documentation that was chosen to provide a diverse set of examples with which to validate the heuristic. In the course of testing the heuristic, interesting patterns in the API documentation were observed. For example, twenty-five percent of the documentation sets studied did not have any overview information, which, according to studies, is one of the most basic elements an API documentation set needs to help software developers learn to use the API. The heuristic produced by this research can be used to evaluate large sets of API documentation, track trends in API documentation, and facilitate additional research.

关键词： application programming interface API API reference documentation Software documentation Software libraries

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PARAMETRIC DATAMODEL FOR COLLABORATIVE PRELIMINARY AIRCRAFT ENGINE DESIGN

PARAMETRIC DATAMODEL FOR COLLABORATIVE PRELIMINARY AIRCRAFT ...

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AIAA Science and Technology Forum and Exposition (AIAA SciTech Forum)

作者： Reitenbach, S. Hollmann, C. Schmeink, J. Vieweg, M. Otten, T. Haessy, J. Siggel, M. German Aerosp Ctr DLR Inst Prop Technol D-51147 Cologne Germany German Aerosp Ctr DLR Simulat & Software Technol D-51147 Cologne Germany

ISBN: (数字)9781624106095

ISBN: (纸本)9781624106095

An essential aspect of the collaborative multidisciplinary preliminary design process of aircraft engines is the involvement of a large number of experts from different disciplines and the usage of numerous tools and workflows. This is a major challenge, especially in the area of data management, as large amounts of data are generated that have to be exchanged and traced via a multitude of interfaces. The purpose of the paper is to present an approach of a central data model as a vehicle for data management in collaborative aircraft engine preliminary design. The first part describes the general structure and abstract definition of the developed data model utilizing modeling languages. Subsequently, a detailed description of the geometric parameterization concerning important engine components and additional data structures follows. Besides the methodology, the software implementation to support this approach is presented in detail, including data serialization and data identification, as well as automated capturing and storage of provenance data throughout the design process. The functionality of the approach is demonstrated by means of examples derived from the preliminary engine design.

关键词： Aircraft Engine Design Data Management Aircraft Engines Recursive Algorithm application programming interface Aircraft Configurations Unified Modeling Language Turbofan Engines Computational Fluid Dynamics Extensible Markup Language

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A Remotely Accessible Ecological Momentary Assessment and Actigraphy System for ALS Research

A Remotely Accessible Ecological Momentary Assessment and Ac...

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IEEE International Conference on Digital Health (IEEE ICDH) at the IEEE World Congress on Services (SERVICES)

作者： Howard, Nora Sprint, Gina Weeks, Douglas L. Crooks, Elena Gonzaga Univ Comp Sci Spokane WA 99258 USA Washington State Univ Med Educ & Clin Sci Spokane WA USA Eastern Washington Univ Phys Therapy Spokane WA USA

ISBN: (纸本)9798350341034

Healthcare-related research studies often deploy ecological momentary assessment techniques to sample information from participants in their natural environment. This paper presents an online system to support remote access of ecological self-report and actigraphy-based measurements for individuals with Amyotrophic Lateral Sclerosis (ALS) and their caregivers. The presented framework includes a custom mobile app and makes use of a web-based application programming interface for data collection with wrist-worn actigraphy devices. The system was evaluated with a research protocol to measure sleep, fatigue, and pain for individuals with ALS and their caregivers (N=8) over a consecutive seven-day period. Though daily self-report response rates were widespread (0%-100%) and the remote actigraphy collection varied in reliability, novel relationships between individuals with ALS and their caregivers were identified from the collected data. Online, ecological systems can support real-time remote monitoring and/or interventions to help understand diseases like ALS and advance healthcare research.

关键词： Actigraphy application programming interface ecological momentary assessment mHealth remote data collection

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A hybrid model for main bearing fatigue prognosis based on physics and machine learning

A hybrid model for main bearing fatigue prognosis based on p...

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AIAA Science and Technology Forum and Exposition (AIAA SciTech)

作者： Yucesan, Yigit Anil Viana, Felipe A. C. Univ Cent Florida Dept Mech & Aerosp Engn Orlando FL 32816 USA

ISBN: (数字)9781624105951

ISBN: (纸本)9781624105951

Unexpected main bearing failure on a wind turbine causes unwanted maintenance and increased operation costs (mainly due to crane, parts, labor, and production loss). Unfortunately, historical data indicates that failure can happen far earlier than the design lives of the component. Root cause analysis investigations have pointed to problems inherent from manufacturing as the major contributor, as well as issues related to event loads (e.g., startups, shutdowns, and emergency stops), extreme environmental conditions, and maintenance practices, among others. Altogether, the multiple failure modes and contributors make modeling remaining useful life of main bearings a very daunting task. In this paper, we present a novel physics-informed neural network modeling approach for main bearing fatigue. The proposed approach is fully hybrid and designed to merge physics-informed and data-driven layers within deep neural networks. The result is a cumulative damage model where the physics-informed layers are used model the relatively well-understood physics (L10 fatigue life) and the data-driven layers account for the hard to model components (e.g., contribution due to poor greasing conditions).

关键词： Vanishing Gradient Problem Artificial Neural Network Fatigue Life Wind Turbine Cumulative Damage Viscosity National Renewable Energy Laboratory Data Acquisition application programming interface Electrostatic Discharge

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Zonal Safety and Particular Risk Analysis for Aircraft Conceptual Design

Zonal Safety and Particular Risk Analysis for Aircraft Conce...

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AIAA Aviation Forum

作者： Bamrahi, Parush Liscouet-Hanke, Susan Tfaily, Ali Tamayo, Alvaro Concordia Univ Dept Mech Ind & Aerosp Engn Montreal PQ Canada Bombardier Adv Prod Dev Dorval PQ Canada Bombardier Res & Technol Dorval PQ Canada

ISBN: (数字)9781624107047

ISBN: (纸本)9781624107047

Safety Assessment is paramount in aircraft design, and increasing aircraft complexity has led to the need for aircraft safety assessments in the early design stages. For unconventional aircraft or aircraft with novel propulsion or system technologies, it becomes even more critical to investigate safety as early as possible in the design process to avoid unfeasible aircraft configurations and system architectures. In this context, the Particular Risk Analysis (PRA) and the Zonal Safety Analysis (ZSA) are essential to assess early. Both of them require a threedimensional (3D) model of the aircraft and systems. To analyze many aircraft configurations and system architectures, the 3D parametric model and the PRA and ZSA require automation. This paper reviews methodologies for performing the ZSA and PRA from a systems point-of-view and proposes parametric zone definition, identification of risk zones, and a conceptual level analysis of the component placement strategy. The effectiveness of the proposed approach is demonstrated with a main landing gear ZSA and a tire burst PRA case study for a conventional aircraft. The presented work is a step towards integrating system safety analysis into multidisciplinary analysis and optimization environments, thus increasing conceptual design maturity and reducing development time.

关键词： Aircraft Conceptual Design Aircraft Configurations System Architectures Aircraft Design Process Aircraft Safety Computer Aided Engineering application programming interface Air Transport Association of America OpenVSP Failure Modes and Effects Analysis

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