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IFIP/IEEE International symposium on Integrated Network Management

作者： P. Parnes K. Synnes D. Schefstrom Department of Computer Science Luleå University of Technology Lulea Sweden

A central issue within any distributed computer environment is how to control and manage running applications. This paper presents an implementation of a framework for control and management of distributed applications and components using IP-multicast. The framework allows for easy and scalable control of single applications, groups of applications or parts of applications using a new agent-based architecture. Messaging is done using the control bus and the scalable reliable real-time transfer protocol for reliable distribution of data. The paper presents how this framework is integrated into Java-based applications and how developers specify access points. The paper also presents an application called multicast Manager, mManager, a Java implementation that provides a user interface to the framework. The mManager allows administrators to get an overview of currently running applications and if necessary control these applications. The paper presents example usage scenarios where the framework is used to create bandwidth-adaptive applications and better group awareness.

关键词： Application software Telecommunication control Quality management technology management Telecommunication network management Java Bandwidth Databases Computer science Distributed computing

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Haptic rendering: programming touch interaction with virtual objects 95

Haptic rendering: programming touch interaction with virtual...

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proceedings of the 1995 symposium on Interactive 3D graphics

作者： K. Salisbury D. Brock T. Massie N. Swarup C. Zilles Principal Research Scientist Dept. of Mechanical Engineering Artificial Intelligence Laboratory Massachusetts Institute of Technology Cambridge MA Research Scientist Artificial Intelligence Laboratory Artificial Intelligence Laboratory Massachusetts Institute of Technology Cambridge MA Graduate Student Dept. of Mechanical Engineering Artificial Intelligence Laboratory Massachusetts Institute of Technology Cambridge MA

ISBN: (纸本)9780897917360

Haptic rendering is the process of computing and generating forces in response to user interactions with virtual objects. Recent efforts by our team at MIT's AI laboratory have resulted in the development of haptic interface devices and algorithms for generating the forces of interaction with virtual objects. This paper focuses on the software techniques needed to generate sensations of contact interaction and material properties. In particular, the techniques we describe are appropriate for use with the Phantom haptic interface, a force generating display device developed in our laboratory. We also briefly describe a technique for representing and rendering the feel of arbitrary polyhedral shapes and address issues related to rendering the feel of non-homogeneous materials. A number of demonstrations of simple haptic tasks which combine our rendering techniques are also described.

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Realizing Emotional Interactions to Learn user Experience and Guide Energy Optimization for Mobile Architectures 22

Realizing Emotional Interactions to Learn User Experience an...

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proceedings of the 55th Annual IEEE/acm International symposium on Microarchitecture

作者： Xueliang Li Zhuobin Shi Junyang Chen Yepang Liu National Engineering Laboratory for Big Data System Computing Technology Shenzhen University China College of Computer Science and Software Engineering Shenzhen University China Research Institute of Trustworthy Autonomous Systems Guangdong Provincial Key Laboratory of Brain-inspired Intelligent Computation and Department of Computer Science and Engineering Southern University of Science and Technology China

ISBN: (纸本)9781665462723

In the age of AI, mobile architectures such as smartphones are still "cold machines"; machines do not feel. If the architecture is able to feel users' feelings and runtime user experience (UX), it will accordingly adapt performance/energy to find the optimal system-operating state that consumes the least energy to satisfy users. In this paper, we will utilize users' facial expressions (FEs) to learn their runtime UX. We know that FEs are the natural and direct way for humans to convey their emotions and feelings. Our study reveals that FEs also reflect UX. Our research for the first time quantifies the link between FEs and UX. Leveraging this link, the architecture will be able to use the front camera to see FEs and feel users' UX. Based on UX, the architecture can appropriately provision computing resources. We propose Vi-energy system to realize the above idea. Our evaluation shows that Vi-energy reduces energy consumption by 52.9% at maximum and secures UX.

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Verification of interactive software for medical devices: PCA infusion pumps and FDA regulation as an example 13

Verification of interactive software for medical devices: PC...

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proceedings of the 5th acm SIGCHI symposium on Engineering interactive computing systems

作者： Paolo Masci Anaheed Ayoub Paul Curzon Michael D. Harrison Insup Lee Harold Thimbleby Queen Mary University of London London United Kingdom University of Pennsylvania Philadelphia Pennsylvania USA Swansea University Swansea United Kingdom

ISBN: (纸本)9781450321389

Medical device regulators such as the US Food and Drug Administration (FDA) aim to make sure that medical devices are reasonably safe before entering the market. To expedite the approval process and make it more uniform and rigorous, regulators are considering the development of reference models that encapsulate safety requirements against which software incorporated in to medical devices must be verified. Safety, insofar as it relates to interactive systems and its regulation, is generally a neglected topic, particularly in the context of medical systems. An example is presented here that illustrates how the interactive behaviour of a commercial Patient Controlled Analgesia (PCA) infusion pump can be verified against a reference model. Infusion pumps are medical devices used in healthcare to deliver drugs to patients, and PCA pumps are particular infusion pump devices that are often used to provide pain relief to patients on demand. The reference model encapsulates the Generic PCA safety requirements provided by the FDA, and the verification is performed using a refinement approach. The contribution of this work is that it demonstrates a concise and semantically unambiguous approach to representing what a regulator's requirements for a particular interactive device might be, in this case focusing on user-interface requirements. It provides an inspectable and repeatable process for demonstrating that the requirements are satisfied. It has the potential to replace the considerable documentation produced at the moment by a succinct document that can be subjected to careful and systematic analysis.

关键词： software engineering methods and processes - formal model-based system development

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Owl eyes: spotting UI display issues via visual understanding 20

Owl eyes: spotting UI display issues via visual understandin...

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proceedings of the 35th IEEE/acm International Conference on Automated software Engineering

作者： Zhe Liu Chunyang Chen Junjie Wang Yuekai Huang Jun Hu Qing Wang Institute of Software Chinese Academy of Sciences Beijing China Monash University Melbourne Australia Institute of Software Chinese Academy of Sciences Beijing China and University of Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781450367684

Graphical user interface (GUI) provides a visual bridge between a software application and end users, through which they can interact with each other. With the development of technology and aesthetics, the visual effects of the GUI are more and more attracting. However, such GUI complexity posts a great challenge to the GUI implementation. According to our pilot study of crowdtesting bug reports, display issues such as text overlap, blurred screen, missing image always occur during GUI rendering on different devices due to the software or hardware compatibility. They negatively influence the app usability, resulting in poor user experience. To detect these issues, we propose a novel approach, OwlEye, based on deep learning for modelling visual information of the GUI screenshot. Therefore, OwlEye can detect GUIs with display issues and also locate the detailed region of the issue in the given GUI for guiding developers to fix the bug. We manually construct a large-scale labelled dataset with 4,470 GUI screenshots with UI display issues and develop a heuristics-based data augmentation method for boosting the performance of our OwlEye. The evaluation demonstrates that our OwlEye can achieve 85% precision and 84% recall in detecting UI display issues, and 90% accuracy in localizing these issues. We also evaluate OwlEye with popular Android apps on Google Play and F-droid, and successfully uncover 57 previously-undetected UI display issues with 26 of them being confirmed or fixed so far.

关键词： deep learning UI testing mobile app UI display

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M-DFCPP: A runtime library for multi-machine dataflow computing

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CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE 2024年第24期36卷

作者： Luo, Qiuming Liu, Senhong Huang, Jinke Li, Jinrong Shenzhen Univ Coll Comp Sci & Software Engn Shenzhen Peoples R China SKT Grp Guangdong Prov Key Lab Popular High Performance Co Shenzhen Peoples R China SKT Grp Guangdong Prov Engn Ctr China made High Performanc Shenzhen Peoples R China

This article designs and implements a runtime library for general dataflow programming, DFCPP (Luo Q, Huang J, Li J, Du Z. proceedings of the 52nd International Conference on Parallel Processing Workshops. acm;2023:145-152.), and builds upon it to design and implement a multi-machine C++ dataflow library, M-DFCPP. In comparison to existing dataflow programming environments, DFCPP features a user-friendly interface and richer expressive capabilities (Luo Q, Huang J, Li J, Du Z. proceedings of the 52nd International Conference on Parallel Processing Workshops. acm;2023:145-152.), enabling the representation of various types of dataflow actor tasks (static, dynamic and conditional task). Besides that, DFCPP addresses the memory management and task scheduling for non-uniform memory access architectures, while other dataflow libraries lack attention to these issues. M-DFCPP extends the capability of current dataflow runtime libraries (DFCPP, taskflow, openstream, etc.) and capable of multi-machine computing, while maintains the API compatible with DFCPP. M-DFCPP adopts the concepts of master and follower (Dean J, Ghemawat S. Commun acm. 2008;51(1):107-113;Ghemawat S, Gobioff H, Leung ST. acm SIGOPS Operating Systems Review. acm;2003:29-43.), which form a worksharing framework as many multi-machine system. To shift to the M-DFCPP framework, a filtering layer is inserted to the original DFCPP, transforming it into followers that can cooperate with each other. The master is made of modules for scheduling, data processing, graph partition, state management and so forth. In benchmark tests with workload with directed acyclic graph topology of binary trees and random graphs, DFCPP demonstrated performance improvements of 20% and 8%, respectively, compared to the second fastest library. M-DFCPP consistently exhibits outstanding performance across varying levels of concurrency and task workloads, achieving a maximum speedup of more than 20 over DFCPP, when the task parallelism e

关键词： dataflow multi-machine parallel computing runtime library

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SnapShoot: integrating semantic analysis and visualization techniques for web-based note taking system 06

SnapShoot: integrating semantic analysis and visualization t...

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proceedings of the 2006 Asia-Pacific symposium on Information Visualisation - Volume 60

作者： Soichiro Iga Makoto Shinnishi Advanced Technology R&D Center Ricoh Co. Ltd. Tsuzuki-ku Yokohama Japan

ISBN: (纸本)9781920682415

We have many application software today to support reading and writing respectively. However, we believe that few applications available today fully support both reading and writing process of the note taking task. This paper presents a novel prototype system called "SnapShoot". The SnapShoot system integrates existing technology - a WWW browser, an out-line processor, context-awareness - with a unique information visualization tool in support of the users who edit and manage electronic documents online. The current system composed of a web based portal to manage the users' documents and an out-line processor tool responsible for editing and visualizing the users' documents. The out-line processor tool visualizes each line of the document by the semantics of the sentence. Early user experience shows that the system provides many benefits over the current application softwares.

关键词： interaction technique sowing interface information visualization note taking world wide web context-sensitive

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Special Media Transmissions: The technology and Applications 15

Special Media Transmissions: The Technology and Applications

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proceedings of the 21st Brazilian symposium on Multimedia and the Web

作者： Miloš Liška Masaryk University CESNET z.s.p.o. Prague/Brno Czech Rep

ISBN: (纸本)9781450339599

The talk will showcase the technology developed by CESNET for very high quality, low-latency media transmissions over high-speed networks and its applications in various fields including medicine, arts, broadcasting and cinematography, sports or education. The talk covers different aspects and demands of such applications and how they can be implemented using a commodity hardware and the UltraGrid software for low latency and high-quality media network transmissions. Complex applications of high-quality media transmissions over dynamic network infrastructures may easily become very hard to be configured, deployed and orchestrated manually. The talk will also showcase the CoUniverse middleware developed by CESNET and the Masaryk University designed for building real-time user-empowered applications based on media transmissions. The solution based on the CoUniverse middleware is also able to interface with the SDN networks and orchestrate its own network paths optimized with respect to the quality of the transmitted media in the SDN environments.

关键词： video network transmission videoconferencing high-speed networks ultragrid video processing couniverse collaborative systems

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An Architectural Charge Management interface for Energy-Harvesting Systems 22

An Architectural Charge Management Interface for Energy-Harv...

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proceedings of the 55th Annual IEEE/acm International symposium on Microarchitecture

作者： Emily Ruppel Milijana Surbatovich Harsh Desai Kiwan Maeng Brandon Lucia Bosch Research and Technology Center and Carnegie Mellon University Carnegie Mellon University Pennsylvania State University

ISBN: (纸本)9781665462723

Energy-harvesting devices eliminate batteries, instead collecting their operating energy from environmental sources. A device stores energy into a capacitor, drawing energy to perform tasks and powering off to recharge when the energy is exhausted. State-of-the-art charge management systems for these devices aim to avoid power failure during task execution by reasoning about task energy cost. We identify that the innate equivalent series resistance (ESR) in energy storage capacitors breaks energy-based systems' guarantees; running high current load on a high-ESR capacitor causes a substantial voltage drop that rebounds once the load is removed. This voltage drop is disregarded by systems that only reason about energy. If the drop lowers the voltage below the system's operating threshold, however, the device powers off while stored energy remains. Though ESR is well understood in hardware design, this is the first work to argue that software for batteryless devices must also be aware of *** work presents Culpeo, a hardware/software mechanism and architectural interface to relay the effect of ESR in the power system to software. We develop static and dynamic implementations of Culpeo and demonstrate on real batteryless devices that considering ESR restores correctness guarantees broken by energy-only charge management. We then demonstrate how to integrate Culpeo's safe voltage into state-of-the-art schedulers, restoring task deadline guarantees for applications with predictable energy harvesting. Finally, we propose an on-chip Culpeo hardware implementation that allows for runtime monitoring of the effects of ESR to respond to changes in harvestable power.

关键词： intermittent computing energy-harvesting power system equivalent series resistance

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Engineering broad-spectrum document software: lessons from ghostscript 02

Engineering broad-spectrum document software: lessons from g...

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proceedings of the 2002 acm symposium on Document engineering

作者： L. Peter Deutsch Aladdin Enterprises Menlo Park CA

ISBN: (纸本)9781581135947

Almost 14 years after its first public release, Ghostscript is still a commercially thriving, actively evolving, nearly-Open Source PDL interpreter. It has successfully evolved from its original function as a PostScript Level 1 previewer running on MS-DOS on IBM-compatible PCs to cover new input PDLs (PDF, PCL5, and PCL XL), output formats (bitmaps, many printers, and low- and high-level PDLs, including PostScript-to-PDF "distilling"), development platforms (Unix, Linux, MS Windows, Macintosh, VMS, ...), deployment platforms (desktop, server, and embedded), and graphics capabilities (including CIE-based and CMYK color, RasterOp, anti-aliasing, and partial transparency), while maintaining or improving performance and output quality. This talk will examine, within the available time, the design choices (some more successful than others) relating specifically to this broad-spectrum *** repeatedly uses several design patterns to achieve functional and performance coverage. One example is "least common denominator plus specialized but functionally equivalent modules selected at build time". This handles differences in build environments, C language dialects, and operating system interfaces, as well as some user-selectable options. A second example is virtual functions, which handle output formats, color representations, and many other points of variability within Ghostscript. A third is "pipelineable interface", used in the memory manager and also for back ends. A fourth is "mixed-level interface", which places both high-level and low-level operations in a single interface with default implementation of the former in terms of the latter. The talk will give some specific examples of each of these, with an assessment of how well they have *** mid-2000, nearly all the development of Ghostscript was done by a single developer with little input. This produced code with extremely high internal consistency, but spotty documentation and some idiosyncrat

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