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Articles 1 - 16 of 16
Full-Text Articles in Computer Engineering
An Ontology And Integration Framework For Smart Communities, Steven Ray, Shishir Kinkar, Mark Hennessy
An Ontology And Integration Framework For Smart Communities, Steven Ray, Shishir Kinkar, Mark Hennessy
Steven R Ray
Survey Of Word Sense Disambiguation Approaches, Xiaohua Zhou, Hyoil Han
Survey Of Word Sense Disambiguation Approaches, Xiaohua Zhou, Hyoil Han
Hyoil Han
Word Sense Disambiguation (WSD) is an important but challenging technique in the area of natural language processing (NLP). Hundreds of WSD algorithms and systems are available, but less work has been done in regard to choosing the optimal WSD algorithms. This paper summarizes the various knowledge sources used for WSD and classifies existing WSD algorithms according to their techniques. The rationale, tasks, performance, knowledge sources used, computational complexity, assumptions, and suitable applications for each class of WSD algorithms are also discussed. This paper will provide users with general knowledge for choosing WSD algorithms for their specific applications or for further …
Parallel Computation In Communication And Signal Processing, Amean Al_Safi, Bradley Bazuin, Liqaa Alhafadhi
Parallel Computation In Communication And Signal Processing, Amean Al_Safi, Bradley Bazuin, Liqaa Alhafadhi
Amean S Al_Safi
The powerful computation of GPU has increased the computation speed up of many systems. This paper summarize some of the most important work in the field of communication and signal processing using GPU
Effect Of Glance Duration On Perceived Complexity And Segmentation Of User Interfaces, Yifei Dong, Chen Ling, Lesheng Hua
Effect Of Glance Duration On Perceived Complexity And Segmentation Of User Interfaces, Yifei Dong, Chen Ling, Lesheng Hua
Dr. Chen Ling
Computer users who handle complex tasks like air traffic control (ATC) need to quickly detect updated information from multiple displays of graphical user interface. The objectives of this study are to investigate how much computer users can segment GUI display into distinctive objects within very short glances and whether human perceives complexity differently after different durations of exposure. Subjects in this empirical study were presented with 20 screenshots of web pages and software interfaces for different short durations (100ms, 500ms, 1000ms) and were asked to recall the visual objects and rate the complexity of the images. The results indicate that …
Proactive Service Migration For Long-Running Byzantine Fault-Tolerant Systems, Wenbing Zhao, H. Zhang
Proactive Service Migration For Long-Running Byzantine Fault-Tolerant Systems, Wenbing Zhao, H. Zhang
Wenbing Zhao
A proactive recovery scheme based on service migration for long-running Byzantine fault-tolerant systems is described. Proactive recovery is an essential method for ensuring the long-term reliability of fault-tolerant systems that are under continuous threats from malicious adversaries. The primary benefit of our proactive recovery scheme is a reduced vulnerability window under normal operation. This is achieved in two ways. First, the time-consuming reboot step is removed from the critical path of proactive recovery. Second, the response time and the service migration latency are continuously profiled and an optimal service migration interval is dynamically determined during runtime based on the observed …
Design And Implementation Of A Byzantine Fault Tolerance Framework For Web Services, Wenbing Zhao
Design And Implementation Of A Byzantine Fault Tolerance Framework For Web Services, Wenbing Zhao
Wenbing Zhao
Many Web services are expected to run with high degree of security and dependability. To achieve this goal, it is essential to use a Web services compatible framework that tolerates not only crash faults, but Byzantine faults as well, due to the untrusted communication environment in which the Web services operate. In this paper, we describe the design and implementation of such a framework, called BFT-WS. BFT-WS is designed to operate on top of the standard SOAP messaging framework for maximum interoperability. It is implemented as a pluggable module within the Axis2 architecture, as such, it requires minimum changes to …
Data Center Site Redundancy, Heather M. Brotherton, J Eric Dietz
Data Center Site Redundancy, Heather M. Brotherton, J Eric Dietz
Heather M Brotherton
Commonly disaster contingency calls for separation of location for redundant locations to maintain the needed redundancy. This document addresses: issues for the data center redundancy including limits to the distribution, distance, and location that may impact on the efficiency or energy.
Energy Overhead Of The Graphical User Interface In Server Operating Systems, Heather Brotherton, J. Eric Dietz, John Mcgrory, Fred Mtenzi
Energy Overhead Of The Graphical User Interface In Server Operating Systems, Heather Brotherton, J. Eric Dietz, John Mcgrory, Fred Mtenzi
Heather M Brotherton
Evidence of graphical user interface server operating system energy overhead is presented. It is posed that data centers would have substantial energy savings by eliminating graphical user interface operating systems.
Self-Organization Of A Mesh Hierarchy For Smart Grid Monitoring In Outage Scenarios, Arjun Athreya, Patrick Tague
Self-Organization Of A Mesh Hierarchy For Smart Grid Monitoring In Outage Scenarios, Arjun Athreya, Patrick Tague
Patrick Tague
Current hierarchical communication infrastructure in the smart grid is not robust for data collection from smart meters during outages. In this work, we propose a self-organizing multi-channel wireless communication framework to aid in data collection for smart grid health monitoring. We propose a two-stage bootstrapping process in which nodes first self-organize into local mesh clusters by flattening the provisioned hierarchy and then interconnect to provide mesh connectivity from the outage region to functioning regions of the grid. We propose to construct this mesh-of-meshes hierarchy using a cross-layer strategy that jointly considers medium access limitations and the asymmetric traffic flow that …
Precis: A Usercentric Word-Length Optimization Tool, Mark Chang, Scott Hauck
Precis: A Usercentric Word-Length Optimization Tool, Mark Chang, Scott Hauck
Mark L. Chang
Translating an algorithm designed for a general-purpose processor into an algorithm optimized for custom logic requires extensive knowledge of the algorithm and the target hardware. Precis lets designers analyze the precision requirements of algorithms specified in Matlab. The design time tool combines simulation, user input, and program analysis to help designers focus their manual precision optimization efforts.
Modeling Architectural Strategy Using Design Structure Networks, C. Jason Woodard
Modeling Architectural Strategy Using Design Structure Networks, C. Jason Woodard
C. Jason Woodard
System architects face the formidable task of purposefully shaping an evolving space of complex designs. Their task s further complicated when they lack full control of the design process, and therefore must anticipate the behavior of other stakeholders, including the designers of component products and competing systems. This paper presents a conceptual tool called a design structure network (DSN) to help architects and design scientists reason effectively about these situations. A DSN is a graphical representation of a system’s design space. DSNs improve on existing representation schemes by providing a compact and intuitive way to express design options—the ability to …
Digital Content Preservation Across Domain Verticals, Soha Maad, Borislav Dimitrov
Digital Content Preservation Across Domain Verticals, Soha Maad, Borislav Dimitrov
Borislav D Dimitrov
The authors present a novel approach to develop scalable systems and services for preserving digital content generated from various application domains. The aim is to deliver an integrative scalable approach for digital content preservation across domain verticals. This would involve consolidating approaches for modeling document workflow, preserving the integrity of heterogeneous data, and developing robust and scalable tools for digital preservation ensuring interoperability across domains verticals. The authors consider various application domains including: healthcare, public, business and finance, media and performing art, and education. The authors focus on specific case studies of digital content preservation across the considered domain verticals. …
Activity-Aware Mental Stress Detection Using Physiological Sensors, Feng-Tso Sun, Cynthia Kuo, Heng-Tze Cheng, Senaka Buthpitiya, Patricia Collins, Martin Griss
Activity-Aware Mental Stress Detection Using Physiological Sensors, Feng-Tso Sun, Cynthia Kuo, Heng-Tze Cheng, Senaka Buthpitiya, Patricia Collins, Martin Griss
Martin L Griss
"Continuous stress monitoring may help users better understand their stress patterns and provide physicians with more reliable data for interventions. Previously, studies on mental stress detection were limited to a laboratory environment where participants generally rested in a sedentary position. However, it is impractical to exclude the effects of physical activity while developing a pervasive stress monitoring application for everyday use. The physiological responses caused by mental stress can be masked by variations due to physical activity. We present an activity-aware mental stress detection scheme. Electrocardiogram (ECG), galvanic skin response (GSR), and accelerometer data were gathered from 20 participants across …
Disaster Recovery And Business Continuity Planning: Business Justification, Heather Brotherton
Disaster Recovery And Business Continuity Planning: Business Justification, Heather Brotherton
Heather M Brotherton
The purpose of this article is to establish the need for disaster recovery and business continuity planning for information systems. Today’s infrastructure and economic dependence upon information technology is highlighted as a basis for the requirement of disaster recovery and business continuity planning. This planning is stressed as a basic business requirement for any reputable information systems operation. The unique needs of information systems as well as the general background for the subject of disaster recovery and business continuity planning considerations are discussed. Contingency contracts, failover locations, and testing are recommended along with communication protocols. DOI:10.5055/jem.2010.0019
Using A Majority Voting Hardware Method On Weather Information To Increase The Accuracy Of Decision Making Methods, Sanaz Asadinia
Using A Majority Voting Hardware Method On Weather Information To Increase The Accuracy Of Decision Making Methods, Sanaz Asadinia
Sanaz Asadinia
No abstract provided.
A Hybrid Routing Algorithm Based On Ant Colony And Zhls Routing Protocol For Manet, Marjan Rafsanjani, Sanaz Asadinia, Farzaneh Pakzad
A Hybrid Routing Algorithm Based On Ant Colony And Zhls Routing Protocol For Manet, Marjan Rafsanjani, Sanaz Asadinia, Farzaneh Pakzad
Sanaz Asadinia
Mobile Ad hoc networks (MANETs) require dynamic routing schemes for adequate performance. This paper, presents a new routing algorithm for MANETs, which combines the idea of ant colony optimization with Zone-based Hierarchical Link State (ZHLS) protocol. Ant colony optimization (ACO) is a class of Swarm Intelligence (SI) algorithms. SI is the local interaction of many simple agents to achieve a global goal. SI is based on social insect for solving different types of problems. ACO algorithm uses mobile agents called ants to explore network. Ants help to find paths between two nodes in the network. Our algorithm is based on …