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Displaying 1-50 out of 50 total
Standby power reduction and SRAM cell optimization for 65nm technology
Found in: Quality Electronic Design, International Symposium on
By S. Lakshminarayanan, J. Joung, G. Narasimhan, R. Kapre, M. Slanina, J. Tung, M. Whately, C-L. Hou, W-J. Liao, S-C. Lin, P-G. Ma, C-W. Fan, M-C. Hsieh, F-C. Liu, K-L. Yeh, W-C. Tseng, S.W. Lu
Issue Date:March 2009
pp. 471-475
Standby power is one of the most critical issues in low power chip applications. In this paper, we have investigated the effects of body bias and source bias in 65nm technology through simulations on SRAM standby current (Isb). The simulation results show ...
Performance Issues in Distributed Query Processing
Found in: IEEE Transactions on Parallel and Distributed Systems
By C. Liu, C. Yu
Issue Date:August 1993
pp. 889-905
<p>The authors discuss various performance issues in distributed query processing. Theyvalidate and evaluate the performance of the local reduction (LR) the fragment andreplicate strategy (FRS) and the partition and replicate strategy (PRS) optimizat...
Implementation of a Gigabit Per Second Millimetre Wave Transceiver on CMOS
Found in: Wireless Broadband and Ultra Wideband Communications, International Conference on
By B. Yang, Y. Mo, K. Wang, Y. Feng, B. Wicks, C. Ta-Minh, F. Zhang, Z. Liu, C. Liu, G. Felic, P. Nadagouda, T. Walsh, E. Skafidas
Issue Date:August 2007
pp. 71
Modern systems require transceivers that deliver gigabit speeds, are smaller in size, and have lower power consumption and cost. This motivates research to develop transceiver-on-chip and transceiver-in-a-package technologies. Recent advances in millimetre...
E-learning Systems Evaluation with Data Envelopment Analysis and Bayesian Networks
Found in: Networked Computing and Advanced Information Management, International Conference on
By H.-Y. Kao, M.-C. Liu, C.-L. Huang, Y.-C. Chang
Issue Date:August 2009
pp. 1207-1210
This study uses data envelopment analysis and Bayesian networks in e-learning systems evaluation and classification, respectively. By maximizing the weighted summed-outputs-to-weighted-summed-inputs ratio, we obtain the scores of individual as well as grou...
An Adaptive Architecture for Multi-Stream Authoring and Presentations in Distributed Networks
Found in: Cyberworlds, International Conference on
By C-M. Huang, P-C. Liu, T-H. Hsu
Issue Date:November 2002
pp. 0201
New global trends in communications technology and liberalization force dramatic changes in our life. Applications are tending to be light-weight and mobile that brings much convenience for the people. In this paper, we present a new architecture to advanc...
Wavelet Image Enhancement Based on Teager Energy Operator
Found in: Pattern Recognition, International Conference on
By Mao-Yu Huang, Din-Chang Tseng, Michael S. C. Liu
Issue Date:August 2002
pp. 20993
Three approaches based on wavelet transform, Teager energy operator, and/or human visual properties are proposed to improve the unsharp-masking image enhancement. The wavelet transform is used for providing multi-scaled information, the Teager energy opera...
A Generalized Relational Model for Indefinite and Maybe Information
Found in: IEEE Transactions on Knowledge and Data Engineering
By K.-C. Liu, R. Sunderraman
Issue Date:March 1991
pp. 65-77
<p>A generalized relational model which is capable of representing and manipulating disjunctive and maybe kinds of information is presented. A data structure, called M-table, is defined, and the information contained in the M-table is precisely state...
Efficient Processing of Nested Fuzzy SQL Queries in a Fuzzy Database
Found in: IEEE Transactions on Knowledge and Data Engineering
By Q. Yang, W. Zhang, C. Liu, J. Wu, C. Yu, H. Nakajima, N.D. Rishe
Issue Date:November 2001
pp. 884-901
<p><b>Abstract</b>—In a fuzzy relational database where a relation is a fuzzy set of tuples and ill-known data are represented by possibility distributions, nested fuzzy queries can be expressed in the Fuzzy SQL language. Although it prov...
Analysis and Comparison of Cache Coherence Protocols for a Packet-Switched Multiprocessor
Found in: IEEE Transactions on Computers
By Q. Yang, L.N. Bhuyan, B.-C. Liu
Issue Date:August 1989
pp. 1143-1153
Analytical models are developed for seven existing cache protocols, namely, Write-Once, Write-Through, Synapse, Berkeley, Illinois, Firefly, and Dragon. The protocols are implemented on a multiprocessor with a packet-switched shared bus. The models are bas...
A Modified Development of CIE Color Difference Formula via Polynomial Regression Approaches
Found in: Computer Science and Software Engineering, International Conference on
By Y. C. Wei, C. C. Liu, M. C. Lo
Issue Date:December 2008
pp. 26-29
A modification of color difference formula based on CIEDE2000 is developed. A residual weighting factor was acquired to enhance the predictability of CIE color-difference formula effectively. The residuals, ΔE’, were calculated between CIEDE2000 difference...
Quality-Based Adaptive Resource Management Architecture (QARMA): A CORBA Resource Management Service
Found in: Parallel and Distributed Processing Symposium, International
By David Fleeman, M. Gillen, A. Lenharth, M. Delaney, L. Welch, D. Juedes, C. Liu
Issue Date:April 2004
pp. 116b
This paper describes the Quality-based Adaptive Resource Management Architecture, QARMA, a framework for resource management within CORBA. QARMA consists of three major components: the System Repository Service, the Resource Management Service, and the Ena...
Embedding a Timing System in TLC
Found in: Temporal Representation and Reasoning, International Syposium on
By C. Liu, M. Orgun
Issue Date:May 1998
pp. 105
No summary available.
A RAM Architecture for Concurrent Access and on Chip Testing
Found in: IEEE Transactions on Computers
By J.-C. Liu, K.G. Shin
Issue Date:October 1991
pp. 1153-1159
<p>A novel RAM architecture supporting concurrent memory access and on chip testing (CMAT) is proposed. A large-capacity memory chip is decomposed into test neighborhoods (TNDs), each of which is tested independently. When there are data stored in a ...
An Automatic Mathematical Expression Understanding System
Found in: Document Analysis and Recognition, International Conference on
By Y. Guo, L. Huang, C. Liu, X. Jiang
Issue Date:September 2007
pp. 719-723
An automatic mathematical expression (ME) understanding system is presented. This system is consisted of three procedures, i.e., pre-processing, symbol segmentation, structure analysis among symbols within the ME. In symbol segmentation procedure, a three-...
New Approaches to Infrared and Terahertz Generation
Found in: Physics and Modeling of Devices Based on Low-Dimensional Structures, Workshop on
By H. C. Liu
Issue Date:March 1998
pp. 34
This paper provides an extended summary of several new approaches to infrared and terahertz generation. First the issues and the state-of-the-arts are outlined, and then ideas of new approaches and devices are introduced. References are cited for details.
A Mobile Data Analysis Framework for Environmental Health Decision Support
Found in: Information Technology: New Generations, Third International Conference on
By Wan D. Bae,Shayma Alkobaisi,Sada Narayanappa,Cheng C. Liu
Issue Date:April 2012
pp. 155-161
Relations between negative health effects like asthma and lung cancer and elevated levels of the environmental factors, such as air pollution, tobacco smoke and humidity, have been detected in several large scale exposure studies. Thus, public health care ...
Implementation and Quantitative Analysis of a Shared-Memory Based Parallel Server Architecture for Aerospace Information Exchange Applications
Found in: Computer Science and Information Engineering, World Congress on
By A. Alegre, S. Beltran, J. Estrada, A. Milshteyn, C. Liu, H. Boussalis
Issue Date:April 2009
pp. 359-363
This paper focuses on the implementation and quantitative analysis of a high-performance parallel processing aerospace information server. An innovative model of software architecture is provided to effectively utilize the computational power of a parallel...
Shot Boundary Detection: An Information Saliency Approach
Found in: Image and Signal Processing, Congress on
By X. Wu, Pong C. Yuen, C. Liu, J. Huang
Issue Date:May 2008
pp. 808-812
This paper proposes a new approach for shot boundary detection using information saliency. Both temporal and spatial saliency are considered to generate an information saliency map (ISM). The shot detection (both abrupt changes and gradual transitions) is ...
An Effective and Practical Classifier Fusion Strategy for Improving Handwritten Character Recognition
Found in: Document Analysis and Recognition, International Conference on
By Q. Fu, X. Ding, T. Li, C. Liu
Issue Date:September 2007
pp. 1038-1042
In this paper, we propose a classifier fusion strategy which trains MQDF (Modified Quadratic Discriminant Functions) classifiers using cascade structure and combines classifiers on the measurement level to improve handwritten character recognition performa...
Online resource matching for heterogeneous grid environments
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By V.K. Naik, C. Liu, L. Yang, J. Wagner
Issue Date:May 2005
pp. 607-614
In this paper, we first present a linear programming based approach for modeling and solving the resource matching problem in grid environments with heterogeneous resources. The resource matching problem described takes into account resource sharing, job p...
Music Databases: Indexing Techniques and Implementation
Found in: Multimedia Database Management Systems, International Workshop
By T.-C. Chou, A. L. P. Chen, C.-C. Liu
Issue Date:August 1996
pp. 46
In this paper, the music database with the search-by- content ability is studied. The chords are used to represent music. With the chord-representation model, the input fault tolerance ability is equipped. PAT-tree is proposed as the index structure. The
A Two-Level Estimation Approach for a Radar System
Found in: Innovative Computing ,Information and Control, International Conference on
By W.-C. Liu, C.-W. Lai, Y.-N. Chung, T.-S. Pan
Issue Date:December 2009
pp. 1236-1239
In a radar surveillance system, both non-maneuvering and maneuvering conditions are usually existed during the tracking process. The computation of a radar system is complicated to track multiple maneuvering targets in real time. In order to assure the tra...
An Embedded High Performance Ultrasonic Signal Processing Subsystem
Found in: Embedded Software and Systems, Second International Conference on
By Hui Li, Dong C. Liu
Issue Date:May 2009
pp. 125-130
We have developed an Embedded Ultrasound Signal Processing (EUSP) subsystem which has the capability to process ultrasound signals of B mode, color flow and spectrum Doppler in real-time. The system consists of four high performance digital signal processo...
Adaptive Edge Enhancement of the Ultrasound Image
Found in: Image and Graphics, International Conference on
By Huan Li, Jun Gao, Dong C. Liu
Issue Date:August 2007
pp. 86-91
This paper presents an adaptive edge enhancement algorithm for ultrasound imaging. Most of classical edge enhancement techniques take the whole image as a unit and use the spatial or frequency domain edge operators to enhance the region whose grey varies l...
Adaptive Artifact Suppression in Ultrasound Image
Found in: Image and Graphics, International Conference on
By Yuan Zhu, Dong C. Liu
Issue Date:August 2007
pp. 173-177
The aim of this report is to present artifact suppression algorithms for reducing the reverberation artifacts in ultrasonic imaging. These reverberation patterns always occurred as signals among specular reflectors. In ultrasound applications, we need to r...
Bridging the Processor-Memory Performance Gapwith 3D IC Technology
Found in: IEEE Design and Test of Computers
By Christianto C. Liu, Ilya Ganusov, Martin Burtscher, Sandip Tiwari
Issue Date:November 2005
pp. 556-564
Bringing the memory close to the processor is obviously a good idea forreducing latency, but the memory is not a monolith: It includes submodules, and their arrangement determines the effectiveness of using 3D technology. The authors look at various scenar...
Modified LC-Trie Based Efficient Routing Lookup
Found in: Modeling, Analysis, and Simulation of Computer Systems, International Symposium on
By Ravikumar V. C, R. Mahapatra, J. C. Liu
Issue Date:October 2002
pp. 0177
IP address lookup at the router is a complex problem. This has been primarily due to the increasing table sizes, growth in traffic rate and high link capacities. In this work we have proposed an algorithm for fast routing lookup with reduced memory utiliza...
A Multicast Communication System over Internet and Its Application
Found in: Parallel and Distributed Systems, International Conference on
By C.-M. Huang, P.-C. Liu
Issue Date:December 1998
pp. 678
No summary available.
Maintaining Execution Histories for Understanding the Execution of Business Processes
Found in: Computer Software and Applications Conference, Annual International
By G.-D. Chen, C.-C. Liu, J.-T. Horng
Issue Date:August 1998
pp. 528
No summary available.
Ultrasound Image Enhancement using Dynamic Filtering
Found in: Image and Graphics, International Conference on
By Xiaoying Li, Dong C. Liu
Issue Date:August 2007
pp. 106-109
This paper presents an adaptive image enhancement method through selected dynamic filtering based on speckle detection for ultrasound images. The main idea is to enhance the tissue structure and also smooth the speckle regions adaptively from pre-defined f...
Collaborative Problem Solving Agent for on Board Real-Time Systems
Found in: Parallel and Distributed Processing Symposium, International
By Shikha Jain, Lonnie R. Welch, David M. Chelberg, Zhenyu Tan, David Fleeman, David Parrott, Barbara Pfarr, Mei C. Liu, Chris Shuler
Issue Date:April 2002
pp. 0095b
Breakthrough in Earth Science Observing will occur when constellations of Earth observing satellites are able to fully collaborate together and collectively monitor the conditions of our planet through a vast array of instruments. These satellites form a n...
An Interval-Based Diagnosis Scheme for Identifying Failing Vectors in a Scan-BIST Environment
Found in: Design, Automation and Test in Europe Conference and Exhibition
By C. Liu, K. Chakrabarty, M. Goessel
Issue Date:March 2002
pp. 0382
We present a new scan-BIST approach for determining failing vectors for fault diagnosis. This approach is based on the application of overlapping intervals of test vectors to the circuit under test. Two MISRs are used in an interleaved fashion to generate ...
APER-2: A Developer-centered, Object-oriented Process Language
Found in: Microelectronics Systems Education, IEEE International Conference on/Multimedia Software Engineering, International Symposium on
By Jen-Yen Jason Chen, S. -C. Chou, W. -C. Liu
Issue Date:November 2000
pp. 297
This paper presents a developer-centered, object-oriented process language called APER-2. The language offers following features 1) it is developer-centered meaning that process programs map lo developers which presumably is more realistic than commonly se...
Decision Process Reengineering of Outsourcing Based on Manufacturing Specification Management
Found in: Asia-Pacific Conference on Services Computing. 2006 IEEE
By F. Wu, C. Liu, P.P. Li, L.J. Ai
Issue Date:December 2006
pp. 207-212
Outsourcing decision-making is related widely factors which are complex and multi- perspectives problems. It is necessary a visual logic process which could be used to recognize complex decision processes in order to let the problems be discussed under an ...
The Design and Implementation of Enterprise Strategy Outsourcing Decision-Making System Based on UML
Found in: Asia-Pacific Conference on Services Computing. 2006 IEEE
By F. Wu, C. Liu, P.P. Li, P. Zhao
Issue Date:December 2006
pp. 182-188
Under the environment of agile and decentralized manufacturing, manufacturing enterprises are increasingly outsourcing their business. From the perspective of protection and acquirement of manufacturing specification, companies? strategic outsourcing decis...
Adaptive Persistence Utilizing Motion Compensation for Ultrasound Images
Found in: Pattern Recognition, International Conference on
By Gang Wang, Dong C. Liu
Issue Date:August 2006
pp. 726-729
Persistence, also called temporal averaging, takes the weighted average between successive image frames to reduce the ultrasound speckle noise. Conventional methods apply persistence coefficients as a function of two image pixels at the same location of tw...
Rational Interpolation Examples in Performance Analysis
Found in: IEEE Transactions on Computers
By C. Liu, W.-B. Gong, C.M. Krishna
Issue Date:September 2001
pp. 997-1003
<p><b>Abstract</b>—The rational interpolation approach has been applied to performance analysis of computer systems in [<ref rid=
Improving Backward Recovery in Workflow Systems
Found in: Database Systems for Advanced Applications, International Conference on
By C. Liu, M. Orlowska, X. Lin, X. Zhou
Issue Date:April 2001
pp. 0276
No summary available.
Probabilistic Reasoning Models for Face Recognition
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By C. Liu, H. Wechsler
Issue Date:June 1998
pp. 827
No summary available.
Evolution of Optimal Projection Axes (OPA) for Face Recognition
Found in: Automatic Face and Gesture Recognition, IEEE International Conference on
By C. Liu, H. Wechsler
Issue Date:April 1998
pp. 282
No summary available.
An enhanced full rate speech coder for digital cellular applications
Found in: Acoustics, Speech, and Signal Processing, IEEE International Conference on
By W. LeBlanc, C. Liu, V. Viswanathan
Issue Date:May 1996
pp. 569-572
In the digital cellular environment, acoustic background noise and channel bit errors (both bursty and random) may severely degrade the performance of speech coders such as the current European GSM full rate standard. This paper presents a CELP-based, enha...
The modular covariance adjustment adaptive array for CDMA wireless communications
Found in: Acoustics, Speech, and Signal Processing, IEEE International Conference on
By T.-C. Liu
Issue Date:April 1993
pp. 180-183
A new adaptive array system is integrated into a code division multiple access (CDMA) digital cellular communication system to solve the near-far problem. Specifically, the author considers combining additional covariance adjustment modules and a multiweig...
Analysis of Soft Handoff Algorithms with Dynamic Spreading WCDMA System
Found in: Advanced Information Networking and Applications, International Conference on
By Ju Wang, J. C. Liu, Yuehao Cen
Issue Date:March 2003
pp. 737
The undergoing 3G wireless network needs to support integration of voice and multimedia data services with varying QoS requirements. It is critical that the least BER for voice traffic, WWW traffic, and streaming video traffic be guaranteed at all time. Wi...
Efficient repeating pattern finding in music databases
Found in: Proceedings of the seventh international conference on Information and knowledge management (CIKM '98)
By Arbee L. P. Chen, C.-C. Liu, Jia-Lien Hsu
Issue Date:November 1998
pp. 281-288
This paper focuses on the consistency issues related to integrating multiple sets of spatial data in spatial information systems such as Geographic Information Systems (GISs). Data sets to be integrated are assumed to hold information about the same geogra...
Knowledge-based scheduling for flexible manufacturing systems
Found in: Proceedings of the first international conference on Industrial and engineering applications of artificial intelligence and expert systems - Volume 2 (IEA/AIE '88)
By J. K. Cochran, M. C. Liu, Y. C. Yang
Issue Date:June 1988
pp. 1075-1082
Many engineering problems such as Job Shop Scheduling can be categorized as constraint satisfaction problems. We propose the Dynamic Constraint-directed Ordered Search (DCOS) to solve such problems. DCOS repeatedly re-arranges the search order of the varia...
String pattern matching in polynomial time
Found in: Proceedings of the 6th ACM SIGACT-SIGPLAN symposium on Principles of programming languages (POPL '79)
By A. C. Fleck, K. C. Liu
Issue Date:January 1979
pp. 222-225
There is a wide range of applications for string processing and SNOBOL4 (Griswold, et al. [1971]) has come to be the most widely implemented and accepted language for such applications. No doubt one of the principle reasons for this acceptance is the data ...
Behavioral-level partitioning for low power design in control-dominated application
Found in: Proceedings of the 10th Great Lakes Symposium on VLSI (GLSVLSI '00)
By C. I. Liu, Ki-Seok Chung, Taewhan Kim
Issue Date:March 2000
pp. 156-161
In this paper, we study the problem of behavioral-level partitioning for low power design. By behavioral-level partitioning, we mean a partitioning which is done at the behavioral description where scheduling and allocation have not been carried out. The m...
AC-1: a clock-powered microprocessor
Found in: Proceedings of the 1997 international symposium on Low power electronics and design (ISLPED '97)
By H. Li, L. Peterson, L. Svensson, N. Tzartzanis, P. Wang, W-C. Liu, W. Athas, X. Jiang
Issue Date:August 1997
pp. 328-333
Sophisticated binary translators and dynamic optimizers demand a program profiler with low overhead, high accuracy, and the ability to collect a variety of profile types. A profiling scheme that achieves these goals is proposed. Conceptually, the hardware ...
IRAIN - an instructional relational database system designed for small computer system
Found in: Proceedings of the 5th ACM SIGSMALL symposium on Small systems (SIGSMALL '82)
By A. C. Liu, S. K. Chang
Issue Date:August 1982
pp. 82-86
A modular design approach for a database system is presented in this paper. We require that every database file be self-descriptive and every program module be self-contained. To improve access efficiency and database security, database decomposition is al...
An electrical-filter synthesis package based upon vector-space operations
Found in: Proceedings of the international conference on APL: part 1 (APL '79)
By F. C. Liu, T. G. Marshall
Issue Date:May 1979
pp. 456-459
A complete APL filter-design package is described which includes provisions for avoiding ill conditioning when polynomials with clustered roots are considered. The solution to the numerical problem that is employed in this package is the reformulation of t...