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IEEE First International Conference on Multimedia Big Data

作者： Su, Wei-Tsung Lu, Yung-Hsiang Kaseb, Ahmed S. Aletheia Univ Dept Comp Sci & Informat Engn New Taipei Taiwan Purdue Univ Sch Elect & Comp Engn W Lafayette IN USA

ISBN: (纸本)9781479986880

Many network cameras have been deployed for various purposes, such as monitoring traffic, watching natural scenes, and observing weather. The data from these cameras may provide valuable information about the world. This paper describes the unexplored opportunities and challenges to harvest the information in the global camera networks. A cloud-based system is proposed to harvest the information from many cameras in an efficient way. This system provides an application programming interface (API) that allows users to analyze the multimedia big data from many cameras simultaneously. Users may also store the data for off-line analysis. This system uses the cloud for computing and storage. Experiments demonstrate the ability to process millions of images from thousands of cameras within several hours.

关键词： multimedia big data camera networks cloud computing application programming interface

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Comparing Complexity of API Designs: An Exploratory Experiment on DSL-based Framework Integration 11

Comparing Complexity of API Designs: An Exploratory Experime...

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10th ACM International Conference on Generative programming and Component Engineering (GPCE)/Conference on Systems, programming, Languages and application - Software for Humanity (SPLASH)

作者： Sobernig, Stefan Gaubatz, Patrick Strembeck, Mark Zdun, Uwe WU Vienna Inst IS & New Media Vienna Austria Univ Vienna Software Architecture Grp Vienna Austria

ISBN: (纸本)9781450306898

Embedded, textual DSLs are often provided as an API wrapped around object-oriented application frameworks to ease framework integration. While literature presents claims that DSL-based application development is beneficial, empirical evidence for this is rare. We present the results of an experiment comparing the complexity of three different object-oriented framework APIs and an embedded, textual DSL. For this comparative experiment, we implemented the same, non-trivial application scenario using these four different APIs. Then, we performed an Object-Points (OP) analysis, yielding indicators for the API complexity specific to each API variant. The main observation for our experiment is that the embedded, textual DSL incurs the smallest API complexity. Although the results are exploratory, as well as limited to the given application scenario and a single embedded DSL, our findings can direct future empirical work. The experiment design is applicable for similar API design evaluations.

关键词： Design Experimentation Measurement Domain-Specific Language application programming interface Complexity Object Points

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Unified Analysis of Aerospace Structures through Implementation of Rapid Tools into a Stress Framework

Unified Analysis of Aerospace Structures through Implementat...

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AIAA Science and Technology Forum and Exposition (AIAA SciTech)

作者： Collier, Craig S. Jones, Stephen P. Collier Res Corp Newport News VA 23606 USA

ISBN: (数字)9781624105951

ISBN: (纸本)9781624105951

Rapid structural analysis tools have become an important part of the design cycle for aerospace companies for the last several decades. As these tools have been developed over time, there is often little consideration for shared software infrastructure between the tools, which makes design and analysis cumbersome due to a lack of commonality in input and output data and reporting, as well as poor traceability of results. Under the Rapid Tools task of the Advanced Composites Consortium (ACC), four aerospace tools were recently implemented or enhanced in the HyperSizer stress framework and then evaluated by this consortium of industry and government organizations. The framework provides an automated software environment for executing the rapid tools for analysis and sizing, quantifying margins of safety for thousands of load cases, and generating reports in support of FAA certification. This paper describes the process by which the tools were enhanced or implemented in the stress framework under the ACC project, and the evaluation conducted by industry consortium members.

关键词： Structural Analysis Aerospace Company Software Infrastructure Finite Element Analysis Aircraft Structures Barely Visible Impact Damage application programming interface Material Properties Commercial Aircraft Design for Manufacturing

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Artificial Neural Network based Vapor-Liquid Equilibrium Modeling for Simulation of Transcritical Multiphase Flows

Artificial Neural Network based Vapor-Liquid Equilibrium Mod...

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AIAA SciTech Forum

作者： Srinivasan, Navneeth Zhang, Hongyuan Yang, Suo Univ Minnesota Twin Cities Dept Mech Engn Minneapolis MN 55455 USA

ISBN: (数字)9781624107115

ISBN: (纸本)9781624107115

The requirement of high power outputs and high efficiencies of combustion engines such as rocket engines, diesel engines, and gas turbines has resulted in the incremented of the system pressure close to the thermodynamically critical point. This increase in pressure often leads to the fluids becoming either transcritical or supercritical in state. This has led to increased interest in both the multi-component phase change phenomena as well as their chemical reactions. In this work, an artificial neural network (ANN) aided VLE model is coupled with a fully compressible computational fluid dynamics (CFD) solver to simulate the transcritical processes occurring in high-pressure liquid-fueled propulsion systems. The ANN is trained on Python using the TensorFlow library, optimized for inference (i.e., prediction) using ONNX Run-time (a cross-platform inference and training machine-learning accelerator), and coupled with a C++ based fully compressible CFD solver. This plug-and-play model/methodology can be used to convert any fully compressible and conservative CFD solver to simulate transcritical processes using only open-source packages, without the need of in-house VLE-based CFD development. The solver is then used to study high-pressure shock-droplet interaction in both two- and four-component systems where qualitative and quantitative agreement is shown with results based on both direct evaluation and the state-of-the-art in-situ adaptive tabulation (ISAT) method. The ANN model is faster than the direct evaluation method and the ISAT model by 4 times for the four-component shock-droplet interaction. The ANN model also shows implicit load balancing as long as the MPI decomposition is performed uniformly amongst the number of cores chosen, as the inference time for ANN predict does not change with the change in thermodynamic state, unlike traditional VLE solvers. Regarding the parallel scalability of this model, good strong scaling characteristics with number of proces

关键词： Artificial Neural Network Vapor Liquid Equilibrium Compressible Flow Computational Fluid Dynamics application programming interface Machine Learning Liquid Fuels Propulsion System Rocket Engine Diesel Engines

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Surface Mesh Deformation in CAD-based Shape Optimization

Surface Mesh Deformation in CAD-based Shape Optimization

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AIAA Science and Technology (SciTech) Forum and Exposition

作者： Sun, Liang Robinson, Trevor T. Armstrong, Cecil G. Marques, Simao Yao, Weigang Queens Univ Belfast Sch Mech & Aerosp Engn Belfast BT9 5AH Antrim North Ireland Univ Surrey Dept Mech Sci Guildford GU2 7XH Surrey England

ISBN: (数字)9781624105784

ISBN: (纸本)9781624105784

This paper describes an approach to deform the surface mesh of a CAD model in response to a change in the shape of the CAD model. It is an advance over existing techniques because it allows the boundary topology of the model to change. To achieve the deformation, one-to-one topology match is achieved between both models using the concept of virtual topology. The surface mesh is deformed using constrained Delaunay triangulation.

关键词： Shape Optimization CAD System Computational Fluid Dynamics Fuselages application programming interface Triangular Element Linear Elasticity Siemens NX Wing Tip

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A Declarative Approach to Information Extraction Using Web Service API 16th

A Declarative Approach to Information Extraction Using Web S...

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16th International Conference on Web Engineering (ICWE)

作者： Samuel, John Rey, Christophe Univ Lyon LIRIS CNRS UMR CNRS 5205 Lyon France Univ Clermont Ferrand LIMOS UMR CNRS 6158 Aubiere France

ISBN: (纸本)9783319387918;9783319387901

The number of diverse web services that we use regularly is significantly increasing. Most of these services are managed by autonomous service providers. However it has become very difficult to get a unified view of this widespread data, which in all likelihood is substantially important to enterprises. A classical approach followed by the enterprises is to write applications using imperative languages making use of the web service API. Such an approach is not scalable and is difficult to maintain considering the ever-evolving web services landscape. This tutorial explores a semi-automated declarative approach to information extraction from the web services using a classical virtual data integration approach, namely mediation, that relies on a well-known query rewriting algorithm, namely the inverse-rules algorithm. It is targeted to audience from both industry as well as academia and requires a basic understanding of database principles and web technologies.

关键词： Data integration Web services application programming interface Declarative programming

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Standardizing technical understanding to support a robust, archivable and accessible digital thread - Supported by ISO 10303 STEP and IEC/ISO 81346 standards

Standardizing technical understanding to support a robust, a...

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AIAA SciTech Forum

作者： Hall, Kyle Taylor, Jonathan Airbus Operat Ltd Engn Methods Bristol BS34 7PA Avon England

ISBN: (数字)9781624107115

ISBN: (纸本)9781624107115

Achieving a consistent Digital Thread concept demands a common sharing of technical understanding across an organization. These exchanges must confer knowledge and provide context between elements of both the physical and digitized product development lifecycles, while also providing accessibility between different product families for the reapplication/reuse of digital assets in the future. This paper begins by discussing literature guiding the determination of appropriate product life cycle approaches within an Enterprise Architecture, then proposes potential methods to realize such product life cycle approaches, through varied levels of governance for the implementation of standards including ISO 10303 STEP and IEC/ISO 81346 standards.

关键词： Digital Engineering Institute of Electrical and Electronics Engineers Model Based System Engineering Metadata Artificial Intelligence Computer Aided Design Machine Learning Black Box application programming interface Industrial applications

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A Gateway-Based Approach for Information Retrieval from Data-Centric Wireless Sensor Networks from IP Hosts

A Gateway-Based Approach for Information Retrieval from Data...

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IEEE 29th International Performance Computing and Communications Conference

作者： Maharrey, Brandon Auburn Univ Auburn AL 36849 USA

ISBN: (纸本)9781424493289

It would be useful if an IP-based host could collect information from multiple remote data-centric networks using a predefined application programming interface (API). This research presents two APIs for gathering named data from remote WSNs - one API for wireless sensor nodes in the data-centric directed diffusion WSN and the other API for IP-based nodes residing on an IP network outside of the WSN. An associated WSN middleware layer used to effectively connect these two APIs through an application-layer gateway is also described. These three components work together in harmony to support gathering of sensed data from one or more remote WSNs through an application-layer gateway which connects different remote WSNs to an IP network.

关键词： IP network IP networks IP-based host IP-based nodes WSN middleware application program interfaces application programming interface application-layer gateway data-centric wireless sensor networks gateway-based approach information retrieval information re

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Fields of Gold: Scraping Web Data for Marketing Insights

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JOURNAL OF MARKETING 2022年第5期86卷 1-20页

作者： Boegershausen, Johannes Datta, Hannes Borah, Abhishek Stephen, Andrew T. Erasmus Univ Rotterdam Sch Management Mkt Rotterdam Netherlands Tilburg Univ Mkt Tilburg Netherlands INSEAD Mkt Fontainebleau France Univ Oxford Said Business Sch Mkt Oxford England Univ Oxford Said Business Sch Res Oxford England

Marketing scholars increasingly use web scraping and application programming interfaces (APIs) to collect data from the internet. Yet, despite the widespread use of such web data, the idiosyncratic and sometimes insidious challenges in its collection have received limited attention. How can researchers ensure that the data sets generated via web scraping and APIs are valid? While existing resources emphasize technical details of extracting web data, the authors propose a novel methodological framework focused on enhancing its validity. In particular, the framework highlights how addressing validity concerns requires the joint consideration of idiosyncratic technical and legal/ethical questions along the three stages of collecting web data: selecting data sources, designing the data collection, and extracting the data. The authors further review more than 300 articles using web data published in the top five marketing journals and offer a typology of how web data have advanced marketing thought. The article concludes with directions for future research to identify promising web data sources and embrace novel approaches for using web data to capture and describe evolving marketplace realities.

关键词： web scraping application programming interface API crawling validity user-generated content social media big data

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Method for Intelligent Information Processing Using Software Reuse Library and Blockchain Architecture

Method for Intelligent Information Processing Using Software...

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

作者： Adhikari, Sam Sysoft New York NY 10007 USA

ISBN: (数字)9781624106095

ISBN: (纸本)9781624106095

In this paper, we provide the implementation details of an autonomous method for intelligent information processing (IIP). The method described is designed to handle aviation maintenance, repair, and overhaul (MRO) data in Blockchain Technology (BT) based digital ledger with embedded smart contracts. The method also handles Blockchain data in space domain. In this digital era complex space mission data is made of datasheets of space parts, final mission reports of past missions, web data, textbooks, publications, and so on. The method involves deep learning (DL), reinforced learning (RL), robotic process automation (RPA), blockchain technology, and a graph-based NoSQL high performance data repository. We employed the methodology in building Security Information and Event Management (SIEM) modules for complex aerospace systems.

关键词： Information Processing Aviation Space Missions Deep Learning Aerospace System application programming interface Natural Language Processing Anomaly Detection Aviation Safety

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