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55th AIAA Aerospace Sciences Meeting

作者： Smith, Nathanial T. Heineck, James T. Schairer, Edward T. ACI/Experimental Aero-Physics Branch AerospaceComputing Inc. NASA Ames Research Center M/S 260-1 Moffett FieldCA94035 United States Experimental Aero-Physics Branch NASA Ames Research Center M/S 260-1 Moffett FieldCA94035 United States

ISBN: (数字)9781624104473

ISBN: (纸本)9781624104473

Background oriented schlieren images have historically been generated by calculating the observed pixel displacement between a wind-on and wind-off image pair using normalized cross-correlation. This work uses optical flow to solve the displacement fields which generate the schlieren images. A well established method used in the computer vision com- munity, optical flow is the apparent motion in an image sequence due to brightness changes. The regularization method of Horn and Schunck is used to create schlieren images using two data sets: a supersonic jet plume/shock interaction from the NASA Ames Unitary Plan Wind Tunnel, and a transonic fight test of a T-38 aircraft using a naturally occurring background, performed in conjunction with NASA Ames and Armstrong Research Centers. Results are presented and contrasted with those using normalized cross-correlation. The optical flow schlieren images are found to provided significantly more detail. We apply the method to an additional data set to demonstrate both the broad applicability and limitations of the technique. © 2017, American Institute of Aeronautics and Astronautics Inc. All rights reserved.

关键词： Supersonic Wind Tunnels Background Oriented Schlieren Supersonic Aircraft NASA Ames Research Center Image Registration Flight Testing Freestream Mach Number Particle Image Velocimetry application programming interface Computational Fluid Dynamics

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Study on a MEMS CAD system based on SolidWorks

Study on a MEMS CAD system based on SolidWorks

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6th International Conference on e-Engineering and Digital Enterprise Technology

作者： Zhang, C. F. Lu, D. J. Jiang, Z. D. Xi An Jiao Tong Univ State Key Lab Mfg Syst Engn Xian 710049 Peoples R China Xian Technol Univ Sch Mech & Elect Engn Xian 710032 Peoples R China

ISBN: (纸本)9780878494705

To enable desianers to construct geometric models of MEMS devices in a straightforward environment and get mask and process flow automatically, a 3D MEMS CAD system for surface micromachined devices is proposed based on traditional design software - SolidWorks. With application programming interfaces (APIs) of SolidWorks, component modules and databases of the system are developed with Visual Basic, such as geometric model design module, mask and process flow generation module, process simulation module. 3D feature database and material database. Their development method is discussed in this paper. A practical example shows that surface micromachined devices can be designed efficiently in the system without tedious fabrication process.

关键词： micro-electro-mechanical system SolidWorks CAD system application programming interface mask process flow

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Sketch-to-Solution: A Case Study in RCS Aerodynamic Interaction

Sketch-to-Solution: A Case Study in RCS Aerodynamic Interact...

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AIAA Science and Technology Forum and Exposition (AIAA SciTech)

作者： Kleb, Bil Schoenenberger, Mark Korzun, Ashley M. Park, Michael A. NASA Langley Res Ctr Computat Aerothermodynam Hampton VA 23681 USA NASA Langley Res Ctr Atmospher Flight & Entry Syst Branch Hampton VA 23681 USA

ISBN: (数字)9781624105951

ISBN: (纸本)9781624105951

Thanks to recent advances in the fields of anisotropic grid adaptation, error estimation, and geometry modeling, a sketch-to-solution work flow is now possible for viscous computational fluid dynamic (CFD) simulations. With this workflow, a CFD application engineer provides geometry, boundary conditions, and flow parameters;and the sketch-to-solution process yields a CFD simulation through automatic, error-based, grid adaptation. To explore the benefits of this nascent capability, a conventional manual grid generation work flow is compared to this new automatic grid generation work flow for a given engineering question: What are the aerodynamic interactions caused by the reaction control system (RCS) on an entry vehicle? This case study indicates that while the automatic grid generation sketchto-solution process is not yet mature, it is preferred over a manual grid generation work flow because it greatly reduces manual labor, eliminates many opportunities for human error, and provides grid sensitivity information.

关键词： Reaction Control System Computational Fluid Dynamics Drag Coefficient Nozzle Walls FUN3D Unstructured Grid Wind Tunnel Models CAD Software application programming interface Discharge Coefficient

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An Adaptive Framework for Applying Cloud Computing In Virtual Learning Environment at Education a Case Study of "AASTMT"

An Adaptive Framework for Applying Cloud Computing In Virtua...

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International Conference on Communications, Management, and Information Technology (ICCMIT)

作者： Hegazy, Abdel Fatah Khedr, Ayman E. Al Geddawy, Yasser Arab Acad Sci Technol & Maritime Transport Coll Comp & Informat Technol Cairo Egypt Future Univ Fac Comp & Informat Technol Dept Informat Syst Cairo Egypt Arab Acad Sci Technol & Maritime Transport Dept Business Informat Syst Cairo Egypt

This study aims to provide a Cloud Computing (CC) proposed framework using application programming interface (API's) to deliver connectivity and interaction of Software as a Service (SaaS) in Virtual Learning Environment (VLE) system at higher education institute. The framework is adopted and implemented to enhance the existing VLE to meet the incremental increasing of users' needs and expectations. Different research's methodologies and techniques are used to measure the students and instructors satisfaction, and to measure the impact of the adoption of CC on business value for VLE as well. In addition, the study identifies and explores the idea of covering the gap between the advance of adopting CC as a new technology and the benefits of implementing cloud techniques in education. The findings of implementing the adopted framework equate the study expectations, where the user's satisfaction significantly increased compared with the existing system. The users found that the system performance and response to their tasks are improved. Meanwhile, the users found that the new adopted system make it easier for them to achieve their academic activities and goals. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0/). Peer-review under responsibility of Universal Society for Applied Research

关键词： Cloud Computing Virtual Learning Environments Software as a Service application programming interface

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A configurable distributed speech recognition system

A configurable distributed speech recognition system

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2nd Biennial Workshop on DSP for Mobile and Vehicular Systems

作者： Xu, Haitian Tan, Zheng-Hua Dalsgaard, Paul Mattethat, Ralf Lindberg, Borge Aalborg Univ Ctr TelelnFrastruktur Speech & Multimedia Commun Aalborg Denmark Inst Technol Aarhus Denmark

ISBN: (纸本)9780387335032

The growth in wireless communication and mobile devices has supported the development of distributed speech recognition (DSR) technology. During the last decade this has led to the establishment of ETSI-DSR standards and an increased interest in research aimed at systems exploiting DSR. So far, however, DSR-based systems executing on mobile devices are only in their infancy. One of the reasons is the lack of easy-to-use software development packages. This chapter presents a prototype version of a configurable DSR system for the development of speech enabled applications on mobile devices. The system is implemented on the basis of the ETSI-DSR advanced front-end and the SPHINX IV recognizer. A dedicated protocol is defined for the communication between the DSR client and the recognition server supporting simultaneous access from a number of clients. This makes it possible for different clients to create and configure recognition tasks on the basis of a set of predefined recognition modes.

关键词： distributed speech recognition noise robustness application programming interface fixed-point optimization

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Virtual Control Panel API: An Artificial Intelligence Driven Directive to Allow Programmers and Users to Create Customizable, Modular, and Virtual Control Panels and Systems to Control IoT Devices via Augmented Reality 23rd

Virtual Control Panel API: An Artificial Intelligence Driven...

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23rd International Conference on Human-Computer Interaction (HCII)

作者： Chopra, Shreya Univ Calgary Calgary AB T2N 1N4 Canada

ISBN: (纸本)9783030909635;9783030909628

An incremental tide in IoT devices prompts a centralized control system where physical controls such as buttons and knobs can become virtual and centralized via augmented reality: especially headset AR. I conduct a literature mapping to identify gaps and create a front-end based virtual control panel API tool to allow programmers and end-users to rapidly create headset augmented reality-based virtual control systems for physical devices. I probe on how an artificial intelligence back-end aids in such a system in terms of panel creation and automation as well as panel usage and control scenarios. I delve into use cases of the virtual control panel API including mass usage and specialized scenarios. Furthermore, I specify the guidelines for a requirements elicitation study for such a system along with potential points of derivation. Next, I probe into implications and limitations of such a system in terms of artificial intelligence, usage, and precision. My work has implications for programmers and users of a virtual control system backed by artificial intelligence for the purpose of controlling physical IoT devices in mass usage as well as in specialized scenarios.

关键词： Virtual control panel User centered design application programming interface API Artificial Intelligence Machine learning User experience design Augmented reality Virtual reality Control panel Control system Block programming Requirements elicitation Customization Internet of Things Consumer and industrial application domains Ethical and trustworthy AI Generative UX/UI design Human-centered AI

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After the "APIcalypse': social media platforms and their fight against critical scholarly research

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INFORMATION COMMUNICATION & SOCIETY 2019年第11期22卷 1544-1566页

作者： Bruns, Axel Queensland Univ Technol Digital Media Res Ctr Brisbane Qld Australia

In the aftermath of the Cambridge Analytica controversy, social media platform providers such as Facebook and Twitter have severely restricted access to platform data via their application programming interfaces (APIs). This has had a particularly critical effect on the ability of social media researchers to investigate phenomena such as abuse, hate speech, trolling, and disinformation campaigns, and to hold the platforms to account for the role that their affordances and policies might play in facilitating such dysfunction. Alternative data access frameworks, such as Facebook's partnership with the controversial Social Science One initiative, represent an insufficient replacement for fully functional APIs, and the platform providers' actions in responding to the Cambridge Analytica scandal raise suspicions that they have instrumentalised it to actively frustrate critical, independent, public interest scrutiny by scholars. Building on a critical review of Facebook's public statements through its own platforms and the mainstream media, and of the scholarly responses these have drawn, this article outlines the societal implications of the APIcalypse', and reviews potential options for scholars in responding to it.

关键词： Cambridge Analytica Social Science One Facebook Twitter application programming interface social media

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Automatic Adaptive Approximation for Stencil Computations 2019

Automatic Adaptive Approximation for Stencil Computations

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28th International Conference on Compiler Construction (CC)

作者： Schmitt, Maxime Helluy, Philippe Bastoul, Cedric Univ Strasbourg Inria Strasbourg France

ISBN: (纸本)9781450362771

Approximate computing is necessary to meet deadlines in some compute-intensive applications like simulation. Building them requires a high level of expertise from the application designers as well as a significant development effort. Some application programming interfaces greatly facilitate their conception but they still heavily rely on the developer's domain-specific knowledge and require many modifications to successfully generate an approximate version of the program. In this paper we present new techniques to semi-automatically discover relevant approximate computing parameters. We believe that superior compiler-user interaction is the key to improved productivity. After pinpointing the region of interest to optimize, the developer is guided by the compiler in making the best implementation choices. Static analysis and runtime monitoring are used to infer approximation parameter values for the application. We evaluated these techniques on multiple application kernels that support approximation and show that with the help of our method, we achieve similar performance as non-assisted, hand-tuned version while requiring minimal intervention from the user.

关键词： Approximate Computing Compilation Code Optimization application programming interface Stencil Code

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Simultaneous Submission of a Manuscript to More Than One Journal: Challenges and Solutions

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PUBLISHING RESEARCH QUARTERLY 2017年第2期33卷 188-191页

作者： Negahdary, Masoud Lexis Publisher Dept Res & Dev IR Nikdel Alley 7Unit 1Shakouri Garakani St Tehran *** Iran Shahid Sadoughi Univ Med Sci Yazd Cardiovasc Res Ctr Yazd Iran Shiraz Univ Med Sci Nanomed & Nanobiol Res Ctr Shiraz Iran

In this study, the challenges and solutions related to the simultaneous submission of a manuscript to more than one journal were investigated. Always, the found challenges exist and occur consciously or unconsciously. Unfortunately, an applicable solution has not been offered in this regard so far. I have introduced a new way, for the first time, that provides all publishers with a controllable submission process. The provided solution is an application programming interface that is linked to a central database and could save critical information of all submitted manuscripts such as title, authors' information, abstract, keywords, date of first submission and history of referee's comments. All publishers throughout the world can join this database, enable its advanced features for their journals and try to providing a controllable submission system against this important publishing challenge.

关键词： application programming interface Central publishing database Manuscript submission process Publishing ethics Simultaneous submission

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Development of an aerodynamic surrogate model for conceptual supersonic aircraft design based on DLR TAU simulations

Development of an aerodynamic surrogate model for conceptual...

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AIAA Aviation Forum

作者： Schnell, Samuel German Aerosp Ctr DLR Inst Aerodynam & Flow Technol Dept Transport Aircraft D-38106 Braunschweig Lower Saxony Germany

ISBN: (数字)9781624107047

ISBN: (纸本)9781624107047

This paper focuses on drag estimation in cruise flight for civil supersonic aircraft. A comparison of simple conceptual design methods applied to several reference aircraft shows relatively large differences in drag estimation. For this reason, another approach is needed. Therefore, the buildup of an aerodynamic surrogate model based on Reynolds-averaged Navier-Stokes (RANS) simulations is performed. In detail, the process chain including CAD model generation, mesh generation and computational flow simulation (CFD) with the DLR TAU code is described. Furthermore, the integration of the process chain into the DLR "Surrogate Modeling for AeRo Data Toolbox Python Package" (SMARTy) is presented. With the help of SMARTy, an aerodynamic surrogate model is created. In the end, an example optimization is performed and analyzed based on a Concorde-like wing-fuselage geometry.

关键词： Supersonic Transport Aircraft Reduced Order Modelling Aircraft Configurations Reynolds Averaged Navier Stokes CAD model Cruise Flight application programming interface Mesh Generation Aerodynamic Optimization Lift to Drag Ratio

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