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53rd IEEE ASEE Frontiers in Education International Conference, FIE 2023

作者： He, Zhenhua Nite, Sandra Winchell, Joshua Nasari, Abhinand Le, Hieu Tao, Jiao Chakravorty, Dhruva Perez, Lisa Liu, Honggao Texas A&m University High Performance Research Computing College StationTX United States Texas A&m University Department of Electrical and Computer Engineering College StationTX United States Texas A&m University Department of Visualization College StationTX United States

ISBN: (纸本)9798350336429

In recent years, accelerators such as graphics Processing Units (GPUs), Field Programmable Gate Arrays (FPGAs), and Intelligence Processing Units (IPUs) have played a dominant role in speeding up workflows in science and engineering. They provide significant increases in computing power, but scientists need to learn how to effectively use these accelerators. To assist researchers, a training framework, called 'Technology Laboratories', was developed. The Technology Laboratories approach builds on situated learning and constructivism by introducing researchers to new computing concepts by scaffolding with existing knowledge of computing resources like GPUs and Jupyter Notebooks. In this approach, researchers are introduced to the newer computing methods by employing accelerators and interactive technologies familiar to them. The first iteration of the training framework was used to teach researchers how to use different methods of artificial intelligence and machine learning (AI/ML) through exercises built on familiar computing environments. New accelerator technologies like IPUs have focused on employing these AI/ML techniques, presenting an opportunity to now teach new computing accelerators using AI/ML models as the familiar computing method. Lave and Wenger's model of situated learning through a community of practice is appropriate for this learning. Additionally, Jerome Bruner's constructivist theory is part of the model as researchers are also required to construct their own knowledge about transforming their code and learning to adapt to a new type of hardware as they work through the individual characteristics of their code and research area. In this paper, we demonstrate the success of our training framework in using AI/ML methods to teach researchers about IPUs. We attracted interested participants from all over the United States, and they were able to complete hands-on exercises and run code on IPUs. We also had in-depth discussions with participants about

关键词： AI/ML Intelligence Processing Units Novel Accelerators Training Framework

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Development of a Control System for a Vibratory Lapping-Polishing Machine

Development of a Control System for a Vibratory Lapping-Poli...

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International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave theory (DIPED)

作者： Vitaliy Korendiy Oleksandr Kachur Viktor Zakharov Department of Technical Mechanics and Engineering Graphics Department of Computer-Aided Design Lviv Polytechnic National University Lviv Ukraine Department of Technical Mechanics and Engineering Graphics "Galca" Ltd Lviv Polytechnic National University Lviv Ukraine

Vibratory equipment is widely used in various fields of mechanical, industrial, and manufacturing engineering. Particularly, such machines can be effectively implemented while carrying out finishing technological operations, e.g., glazing, polishing, and lapping of different machine parts. The present paper is focused on developing the control system for the novel design of a vibratory lapping-polishing machine driven by six solenoids. The main purpose consists in providing the circular trajectory of the working member and ensuring the machining uniformity at each point of the surface being treated. In such a case, it is proposed to actuate the solenoids with the specified time shift depending on the forced frequency needed to be provided. The duration of the signal actuating the solenoid is equal to one-sixth of the total duration of a cycle (period) of the working body oscillation. The corresponding control approach is developed and simulated in the Tinkercad application, while the control system is designed based on the Arduino hardware and software. In addition, the laboratory prototype of the vibratory lapping-polishing machine and the corresponding control system are implemented in practice. The performed laboratory studies and experimental tests substantiate the possibilities of generating the circular oscillations of the working member of the vibration-driven lapping-polishing machine. The obtained results may be useful for engineers and technologists dealing with control systems of various vibratory technological equipment based on electromagnetic and solenoid-type drives.

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Real-time rendering with heterogeneous GPUS 14

Real-time rendering with heterogeneous GPUS

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14th IADIS International Conference computer graphics, Visualization, computer Vision and Image Processing 2020, CGVCVIP 2020 and 5th IADIS International Conference Big Data Analytics, Data Mining and Computational Intelligence 2020, BigDaCI 2020 and 9th IADIS International Conference theory and practice in Modern Computing 2020, TPMC 2020, Part of the 14th Multi Conference on computer Science and Information Systems, MCCSIS 2020

作者： Lei, Xiao Byrd, Vetria L. Purdue University Department of Computer Graphics Technology 401 North Grant Street West LafayetteIN47907 United States

ISBN: (纸本)9789898704214

A large portion of recent personal computers are equipped with both integrated and discrete GPUs. However, most of the time these two GPUs are not utilized concurrently in the same application. This paper provides an exploration into utilizing integrated plus discrete GPUs to improve real-time rendering performance with Vulkan API. Specifically, our approach includes offloading asynchronous computation workload from the discrete GPU to the integrated GPU, and multi-threading and render graphs are adopted to saturate GPUs utilization. Through benchmarking, we validate that our approach can speed up the overall performance by up to 4% with the utilization of combinations like Intel UHD 630 plus NVIDIA RTX 2070. Our results reveal that with tools like Vulkan, such heterogeneous-GPU system is exploitable. © Proceedings of the 14th IADIS International Conference computer graphics, Visualization, computer Vision and Image Processing 2020, CGVCVIP 2020 and Proceedings of the 5th IADIS International Conference Big Data Analytics, Data Mining and Computational Intelligence 2020, BigDaCI 2020 and Proceedings of the 9th IADIS International Conference theory and practice in Modern Computing 2020, TPMC 2020 - Part of the 14th Multi Conference on computer Science and Information Systems, MCCSIS 2020. All rights reserved.

关键词： graphics processing unit

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Rate-Splitting MIMO Multiple Access — An Amortized Optimization Approach

Rate-Splitting MIMO Multiple Access — An Amortized Optimiza...

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Asilomar Conference on Signals, Systems & computers

作者： Jeremy Johnston Xiaodong Wang Department of Electrical Engineering Columbia University New York NY USA

ISBN: (数字)9798350354058

ISBN: (纸本)9798350354065

Next-generation wireless technologies such as rate-splitting multiple access (RSMA) and massive MIMO are char-acterized by optimization problems too complex to solve in real-time, hence suboptimal heuristics are adopted in practice. As we explore in this paper, machine learning techniques have the potential to upend this paradigm, offering new algorithms for obtaining near-optimal solutions to a desired class of optimization problems. We consider downlink beamforming optimization (sum rate maximization and max-min fairness) for a MISO interference channel employing RSMA and a large antenna array (up to 64 elements). At such a scale, the linear-MMSE beamformers are the state-of-the-art since the optimal beamformers are too complex to compute. We apply the framework of amortized opti-mization to obtain an iterative operator that designs beamformers with much less computation than existing optimization algorithms (weighted-MMSE) and whose complexity scales linearly with the size of the antenna array. Our simulation results show that the learned optimizer is competitive with state-of-the-art numerical optimization in terms of sum rate, but requires a fraction of the computational cost. For the max-min fairness problem, the learned optimizer outperforms all baseline methods.

关键词： Recurrent neural networks Array signal processing Simulation Massive MIMO Minimax techniques Downlink Rendering (computer graphics) Computational efficiency Complexity theory Optimization

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Close Reading for Visualization Evaluation

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IEEE computer graphics AND APPLICATIONS 2020年第4期40卷 84-94页

作者： Bares, Annie Keefe, Daniel F. Samsel, Francesca Univ Texas Austin Austin TX 78712 USA Univ Minnesota Minneapolis MN 55455 USA

Visualizations produced by collaborations between artists, scientists, and visualization experts lay claim to being not only more effective in delivering information but also more effective in their abilities to elicit qualities like human connection. However, as prior work in the visualization community has demonstrated, it is difficult to evaluate these claims because characteristics associated with human connection are not easily measured quantitatively. In this Visualization Viewpoints piece, we address this problem in the context of our work to develop methods of evaluating visualizations created by Sculpting Visualization, a multidisciplinary project that incorporates art and design theory and practice into the process of scientific visualization. We present the design and results of a study in which we used close reading, a formal methodology used by humanities scholars, as a way to test reactions and analyses from evaluation participants related to an image created using Sculpting Visualization. In addition to specific suggestions about how to improve future iterations of the visualization, we discuss key findings of the evaluation related to contextual information, visual perspective, and associations that individual viewers brought to bear on their experience with the visualization.

关键词： Art Data Visualisation Visualization Viewpoints Piece Design theory Scientific Visualization Humanities Scholars Evaluation Participants Visualization Evaluation Visualization Experts Visualization Community Sculpting Visualization Visualization Data Visualization Art Tools Vocabulary Climate Change Task Analysis

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Generative Choreographies: The Performance Dramaturgy of the Machine 15

Generative Choreographies: The Performance Dramaturgy of the...

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15th International Joint Conference on computer Vision, Imaging and computer graphics theory and Applications (VISIGRAPP) / 15th International Conference on computer Vision theory and Applications (VISAPP)

作者： Kaspersen, Esbern T. Gorny, Dawid Erkut, Cumhur Palamas, George Aalborg Univ Dept Architecture Design & Media Technol DK-2450 Copenhagen Denmark Makropol Dk Copenhagen Denmark

ISBN: (纸本)9789897584022

This paper presents an approach for a full body interactive environment in which performers manipulate virtual actors in order to augment a live performance. The aim of this research is to explore the role of generative animation to serve an interactive performance, as a dramaturgical approach in new media. The proposed system consists of three machine learning modules encoding a human's movement into generative dance, performed by an avatar in a virtual world. First, we provide a detailed description of the technical aspects of the system. Afterwards, we discuss the critical aspects summarized on the basis of dance practice and new media technologies. In the process of this discussion, we emphasize the ability of the system to conform with a movement style and communicate choreographic semiotics, affording artists with new ways of engagement with their audiences.

关键词： Generative Art Virtual Agents Animation Dramaturgy Neural Networks Human computer Interaction Motion Expressiveness New Media

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Segmentation and recognition of connected handwritten characters 14

Segmentation and recognition of connected handwritten charac...

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作者： Panditharatne, Shehan Ranathunga, Lochandaka Faculty of Information Technology University of Moratuwa Sri Lanka

ISBN: (纸本)9789898704214

Optical Character Recognition is still an open problem in computer science. This paper explores segmentation of connected (touching/overlapping) handwritten characters through implicit segmentation and explicit segmentation. Explicit segmentation is achieved through rules based on background thinning and analyzing the contour hierarchy. Implicit segmentation is achieved through generating a dataset of connected characters and training a CNN. This research was inspired by the need to recognize math documents containing algebraic equations. Recognition of 72 characters (alphanumeric and math symbols) are achieved through the proposed methods. The scope of the implemented OCR is limited to maximum of two connected characters. © Proceedings of the 14th IADIS International Conference computer graphics, Visualization, computer Vision and Image Processing 2020, CGVCVIP 2020 and Proceedings of the 5th IADIS International Conference Big Data Analytics, Data Mining and Computational Intelligence 2020, BigDaCI 2020 and Proceedings of the 9th IADIS International Conference theory and practice in Modern Computing 2020, TPMC 2020 - Part of the 14th Multi Conference on computer Science and Information Systems, MCCSIS 2020. All rights reserved.

关键词： Computation theory

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A Process Reference Model for UX 14th

A Process Reference Model for UX

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14th International Joint Conference on computer Vision, Imaging and computer graphics theory and Applications (VISAPP)

作者： Kieffer, Suzanne Rukonic, Luka de Meerendre, Vincent Kervyn Vanderdonckt, Jean Catholic Univ Louvain Inst Language & Commun B-1348 Louvain La Neuve Belgium Catholic Univ Louvain Louvain Res Inst Management & Org B-1348 Louvain La Neuve Belgium

ISBN: (纸本)9783030415907;9783030415891

We propose a process reference model for UX (UXPRM), which includes a description of the primary UX lifecycle processes within a UX lifecycle and a set of supporting UX methods. The primary UX lifecycle processes are refined into objectives, outcomes and base practices. The supporting UX methods are refined into related techniques, specific objectives and references to the related documentation available in the literature. The contribution of the proposed UXPRM is three-fold: conceptual, as it draws an accurate picture of the UX base practices;practical, as it is intended for both researchers and practitioners and customizable for different organizational settings;methodological, as it supports researchers and practitioners to make informed decisions while selecting UX methods and techniques. This is a first step towards the strategic planning of UX activities.

关键词： User experience UX base practice UX methods Process reference model Capability/maturity model Agile methods

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Simplified Determination of RHEED Patterns and Its Explanation Shown with the Use of 3D computer graphics

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MATERIALS 2021年第11期14卷 3056-3056页

作者： Kokosza, Lukasz Pawlak, Jakub Mitura, Zbigniew Przybylski, Marek AGH Univ Sci & Technol Fac Met Engn & Ind Comp Sci Al Mickiewicza 30 PL-30059 Krakow Poland AGH Univ Sci & Technol Fac Phys & Appl Comp Sci Al Mickiewicza 30 PL-30059 Krakow Poland AGH Univ Sci & Technol Acad Ctr Mat & Nanotechnol Al Mickiewicza 30 PL-30059 Krakow Poland

The process of preparation of nanostructured thin films in high vacuum can be monitored with the help of reflection high energy diffraction (RHEED). However, RHEED patterns, both observed or recorded, need to be interpreted. The simplest approaches are based on carrying out the Ewald construction for a set of rods perpendicular to the crystal surface. This article describes how the utilization of computer graphics may be useful for realistic reproduction of experimental conditions, and then for carrying out the Ewald construction in a reciprocal 3D space. The computer software was prepared in the Java programing language. The software can be used to interpret real diffractions patterns for relatively flat surfaces, and thus it may be helpful in broad research practice.

关键词： nanostructured materials kinematical diffraction theory Ewald construction computer visualization

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Learning-based segmentation of optic disc in retinal images using clustering trees and local mode filtering 14

Learning-based segmentation of optic disc in retinal images ...

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作者： Osadebey, Michael Pedersen, Marius Waaler, Dag Norwegian University of Science and Technology Norway

ISBN: (纸本)9789898704214

Delineation of the optic disc boundary in retinal images is the first step towards the computation of cup-to-disc ratio, an important indicator of ophthalmic pathologies such as glaucoma. This paper proposes the combination of learning-based clustering trees with local mode filtering for the segmentation of the optic disc region in retinal images. The algorithm identifies candidate optic disc region by extracting and pooling low-level features at different clustering resolutions from the filtered region-of-interest in two color channels. Thereafter, we use learned geometric properties such as area, eccentricity and solidity to extract high-level features for the identification of connected components, which most likely belong to the optic disc region. The final stage pools and fully connects these connected components into a single segmented region. Performance evaluation on three publicly available datasets from IDRID, DRISHTI-GS and MESSIDOR demonstrate promising results that are comparable to state-of-the-art algorithms. © Proceedings of the 14th IADIS International Conference computer graphics, Visualization, computer Vision and Image Processing 2020, CGVCVIP 2020 and Proceedings of the 5th IADIS International Conference Big Data Analytics, Data Mining and Computational Intelligence 2020, BigDaCI 2020 and Proceedings of the 9th IADIS International Conference theory and practice in Modern Computing 2020, TPMC 2020 - Part of the 14th Multi Conference on computer Science and Information Systems, MCCSIS 2020. All rights reserved.

关键词： Computation theory

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