1.《美国工程索引》（Ei)
1 of 25 Complete Record
DIALOG No: 05150989 EI Monthly No: EIP98114436055
Title: Analysis of dynamic EEG signals by using wavelet packets decomposition
Author: Minfen, Shen; Fenglin, Shen
Corporate Source: Shantou Univ
Conference Title: Proceedings of the 1998 IEEE-SP International Symposium on Time-
Frequency and Time-Scale Analysis
Conference Location: Pittsburgh, PA, USA Conference Date: 19981006-19981009
Conference Sponsor: IEEE
Source: Proceedings of the IEEE-SP International Symposium on Time-Frequency and
Time-Scale Analysis 1998. IEEE, Piscataway, NJ, USA,98TH8380. p 85-88
Publication Year: 1998
CODEN: 002448
Language: English
Conference Number: 49140
Document Type: CA; (Conference Article) Treatment Code: A; (Applications); T;
(Theoretical)
Abstract: Wavelet transformation is to employed investigate the nonstationarity of
clinical EEG signals and other medical signals. In order to detect 4 kinds of EEG
rhythms, wavelet packet analysis is used for designing filters with different
frequency characteristics. Two kinds of EEG data with different brain function
states are analyzed and compared. It is indicated from the experimental results that
the dynamic characteristics of clinical brain electrical activities can be
demonstrated by using wavelet packet technique. The method presented in this paper
also proposes a new way for the analysis of other biomedical signals. (Author
abstract) 6 Refs.
Descriptors: *Pattern recognition; Electroencephalography; Wavelet transforms;
Packet switching; Electric network synthesis
Identifiers: Wavelet packet decomposition
EI Classification Codes:
703.2.2 (Electric Filter Synthesis)
723.5 (Computer Applications); 461.6 (Medicine); 921.3 (Mathematical
Transformations); 703.2 (Electric Filters)
716 (Radar, Radio & TV Electronic Equipment); 723 (Computer Software); 461
(Biotechnology); 921 (Applied Mathematics); 703 (Electric Circuits)
2 of 25 Complete Record
DIALOG No: 05120028 EI Monthly No: EIP98094381028
Title: Integrated classifier in classified coding
Author: Huang, Jiwu; Chen, Li; Shi, Yun Q.
Corporate Source: Shantou Univ, Shantou, China
Conference Title: Proceedings of the 1998 IEEE International Symposium on Circuits
and Systems, ISCAS. Part 4 (of 6)
Conference Location: Monterey, CA, USA Conference Date: 19980531-19980603
Conference Sponsor: IEEE
Source: Proceedings - IEEE International Symposium on Circuits and Systems v 4
1998. IEEE, Piscataway, NJ, USA,98CH36187. p 146-149
Publication Year: 1998
CODEN: PICSDI ISSN: 0271-4310
Language: English
Conference Number: 48950
Document Type: CA; (Conference Article) Treatment Code: T; (Theoretical)
Abstract: Block coding is one of the most common schemes in image data compression.
To improve the performance of block coding, a classification can be applied to the
blocks prior to coding. This results in an adaptive block coding method, i.e,
classified coding. In this paper, an integrated classifier taking the features of
the human vision system (HVS) into account in classifier coding is proposed. First,
we present a classifier based on the local contrast sensitivity of the HVS. Compared
with the commonly used local variance-based classifier (LVC), it possesses lower
computational complexity while preserving almost the same performance. To improve
upon the single-parameter classifiers' poor adaptivity, we, then, propose an
integrated classifier which is composed of three independent classification units.
It exhibits the complementarity of different classifiers. The simulation results
demonstrate that the proposed classifier performs better than the LVC. (Author
abstract) 9 Refs.
Descriptors: *Image coding; Image compression; Computer vision; Feature extraction;
Image analysis; Image quality; Computational complexity; Computer simulation
Identifiers: Human vision systems (HVS); Local variance-based classifiers (LVC)
EI Classification Codes:
723.2 (Data Processing); 723.5 (Computer Applications); 741.2 (Vision); 741.1
(Light/Optics); 721.1 (Computer Theory, Includes Formal Logic, Automata Theory,
Switching Theory, Programming Theory)
741 (Optics & Optical Devices); 723 (Computer Software); 721 (Computer Circuits
& Logic Elements)
3 of 25 Complete Record
DIALOG No: 05107843 EI Monthly No: EIP98094363724
Title: Long-term behaviour of steel-strip reinforced wood shaving-cement board roof
panel
Author: Xiong, Guangjing
Corporate Source: Shantou Univ, Shantou, China
Source: Cement & Concrete Composites v 20 n 4 Aug 1998. p 329-334
Publication Year: 1998
CODEN: CCOCEG ISSN: 0958-9465
Language: English
Document Type: JA; (Journal Article) Treatment Code: X; (Experimental)
Abstract: In order to provide a better understanding of the behaviour of a steel-
strip reinforced high-density wood shaving-cement board flexural member, a 3-year
long-term loading test was carried out on midsize beams and full-scale ribbed roof
panels. The long-term behaviour of the members is presented and explained. The test
results indicate that a steel strip has a significant influence on long-term
stiffness. It is also shown that the long-term load-carrying capacity of the
flexural members is about 0.5 multiplied by the short-term load-carrying capacity and
the long-term deflection is about 1.6-2.5 multiplied by the short-term deflection.
(Author abstract) 5 Refs.
Descriptors: *Composite materials; Cements; Steel; Particle board; Bearing capacity;
Roofs; Structural panels; Deflection (structures); Wood wastes
Identifiers: Steel-strip; Wood shaving-cement board
EI Classification Codes:
412.1 (Cement); 545.3 (Steel); 415.4 (Other Structural Materials); 817.1
(Plastics Products)
415 (Metals, Wood & Other Structural Materials); 412 (Concrete); 545 (Iron &
Steel); 811 (Cellulose, Paper & Wood Products); 817 (Plastics, Products &
Applications)
4 of 25 Complete Record
DIALOG No: 05074749 EI Monthly No: EIP98074307966
Title: Concurrent approach to cell formation and assignment of identical machines
in group technology
Author: Wu, N.
Corporate Source: Shantou Univ, Shantou, China
Source: International Journal of Production Research v 36 n 8 Aug 1998. p 2099-2114
Publication Year: 1998
CODEN: IJPRB8 ISSN: 0020-7543
Language: English
Document Type: JA; (Journal Article) Treatment Code: T; (Theoretical)
Abstract: In designing a cellular manufacturing system, an important way to reduce
and simplify intercell flows is to identify shared machines and duplicate them to
some cells. However, the shared machines may not be properly identified by the
existing cell formation methods. Thus, some unnecessary machine duplication may be
made in the sense of capacity requirement and capital investment. In fact, for
practical applications, the number of machines of a machine type should be determined
by the capacity requirement of the parts to be produced in the system, and should be
the constraint for the cell formation problem. Therefore, multiple identical
machines should be appropriately assigned into different cells in designing a
cellular manufacturing system. To overcome this drawback of the existing methods, in
this paper a network model is developed for the design of a cellular manufacturing
system. In the model, the machine type which has only one machine is represented by
a simple node. The machine type which has two or more machines is represented by a
complex node. Thus, this model can describe multiple machines of the same type.
Based on this model, a new approach is presented. By the proposed approach, the cell
formation problem and the proper assignment of identical machines are solved
concurrently. Therefore, the proposed approach provides a more effective solution
than the existing methods. (Author abstract) 35 Refs.
Descriptors: *Flexible manufacturing systems; Machine tools; Resource allocation;
Concurrent engineering; Mathematical models; Constraint theory
Identifiers: Group technology; Intercell flows; Cell formation methods
EI Classification Codes:
913.4.1 (Flexible Manufacturing Systems); 913.4.3 (Cellular Manufacturing)
913.4 (Manufacturing); 912.2 (Management); 723.5 (Computer Applications); 913.6
(Concurrent Engineering)
913 (Production Planning & Control); 603 (Machine Tools); 912 (Industrial
Engineering & Management); 723 (Computer Software)
5 of 25 Complete Record
DIALOG No: 05030765 EI Monthly No: EIP98064245142
Title: Segmentation-based hybrid coding using luminance masking
Author: Huang, Jiwu; Shi, Yun Q.
Corporate Source: Shantou Univ, China
Source: Electronics Letters v 34 n 8 Apr 16 1998. p 750-751
Publication Year: 1998
CODEN: ELLEAK ISSN: 0013-5194
Language: English
Document Type: JA; (Journal Article) Treatment Code: T; (Theoretical)
Abstract: The authors propose a segmentation-based hybrid image coding algorithm
taking the features of the human visual system into account. A novel segmentation
criterion based on luminance masking is presented. The image is segmented into
blocks of different sizes and different properties. Block mean, polynomial
approximation and discrete cosine transform coding are then applied to the blocks
accordingly. (Author abstract) 7 Refs.
Descriptors: *Image segmentation; Image coding; Mathematical models; Vision;
Approximation theory; Mathematical transformations; Polynomials
Identifiers: Luminance masking; Discrete cosine transforms (DCT)
EI Classification Codes:
723.2 (Data Processing); 741.2 (Vision); 921.6 (Numerical Methods); 921.3
(Mathematical Transformations); 921.1 (Algebra)
723 (Computer Software); 921 (Applied Mathematics); 741 (Optics & Optical
Devices)
6 of 25 Complete Record
DIALOG No: 05030764 EI Monthly No: EIP98064245141
Title: Adaptive image watermarking scheme based on visual masking
Author: Huang, Jiwu; Shi, Yun Q.
Corporate Source: Shantou Univ, China
Source: Electronics Letters v 34 n 8 Apr 16 1998. p 748-750
Publication Year: 1998
CODEN: ELLEAK ISSN: 0013-5194
Language: English
Document Type: JA; (Journal Article) Treatment Code: T; (Theoretical)
Abstract: An image watermarking scheme in a DCT domain is proposed. It is adaptive
in that a different strength of watermark is applied to different blocks according to
their block classification. For the classification, visual masking (both luminance
and texture masking) is taken into account. Consequently, the watermarks thus
generated are robust and invisible. (Author abstract) 3 Refs.
Descriptors: *Image coding; Object recognition; Mathematical transformations;
Algorithms
Identifiers: Discrete cosine transform (DCT) domain; Adaptive image watermarking
scheme; Visual masking
EI Classification Codes:
723.2 (Data Processing); 921.3 (Mathematical Transformations)
723 (Computer Software); 921 (Applied Mathematics)
7 of 25 Complete Record
DIALOG No: 05015072 EI Monthly No: EIP98054194587
Title: Sequence of knowledge bases and evaluating revision approximately
Author: Su, Kaile
Corporate Source: Shantou Univ, Shantou, China
Conference Title: Proceedings of the 1997 IEEE International Conference on
Intelligent Processing Systems, ICIPS. Part 2 (of 2)
Conference Location: Beijing, China Conference Date: 19971028-19971031
Conference Sponsor: IEEE
Source: Proceedings of the IEEE International Conference on Intelligent Processing
Systems, ICIPS v 2 1998. IEEE, Piscataway, NJ, USA,97TH8335. p 1159-1163
Publication Year: 1998
CODEN: 002853
Language: English
Conference Number: 48321
Document Type: CA; (Conference Article) Treatment Code: G; (General Review)
Abstract: This paper is motivated to give a recursion-theoretic framework to
investigate sequences of knowledge bases such as sequence of iterated revisions and
sequence of provisional outputs generated by a so-called anytime algorithm. The
global properties of sequence of general knowledge bases are studied by using some
concepts such as convergence and logical convergence, which can be considered not
only as rationality postulates sequence of iterated revisions but also as basic
criteria of adequacy for anytime algorithms for evaluating knowledge bases. A quite
surprising result in this paper is that, even in the full first-order logic case,
revising a knowledge could be effectively done by an anytime algorithm that produces
quickly a first version of the revision and refines it step by step, and these
versions approach the revision in limit. It is also investigated that the problem of
how to approximately compute an extension in default logic. (Author abstract) 27
Refs.
Descriptors: *Knowledge based systems; Recursive functions; Iterative methods;
Algorithms; Convergence of numerical methods; Artificial intelligence; Computational
complexity; Approximation theory; Problem solving
Identifiers: Recursion theoretic framework; Logic convergence
EI Classification Codes:
723.4.1 (Expert Systems)
723.4 (Artificial Intelligence); 721.1 (Computer Theory, Includes Formal Logic,
Automata Theory, Switching Theory, Programming Theory); 921.6 (Numerical Methods)
723 (Computer Software); 721 (Computer Circuits & Logic Elements); 921 (Applied
Mathematics)
8 of 25 Complete Record
DIALOG No: 05009686 EI Monthly No: EIP98054183866
Title: Nonlinear discrete Fourier transformer for the time series analysis and
application to speech coding
Author: Dai, Xianhua
Corporate Source: Shantou Univ, China
Conference Title: Proceedings of the 1997 IEEE TENCON Conference. Part 2 (of 2)
Conference Location: Brisbane, Australia Conference Date: 19971202-19971204
Conference Sponsor: IEEE
Source: Speech and Image Technologies for Computing and Telecommunications IEEE
Region 10 Annual International Conference, Proceedings/TENCON v 2 1997. IEEE,
Piscataway, NJ, USA,97CH36162. p 613-616
Publication Year: 1997
CODEN: 85QXAA
Language: English
Conference Number: 48279
Document Type: CA; (Conference Article) Treatment Code: A; (Applications); T;
(Theoretical)
Abstract: The primary motivation of the paper is to investigate waveform coding of
speech signal. The paper presents a new signal analyzing tool - nonlinear discrete
Fourier transform (NDFT) which has an improved signal analysis performance. By
virtue of the NDFT, waveform coding of the speech signal with a long segment (for ex.
a segment with 512 or 1024 samples) is studied. The new coding method provides an
improved performance of the speech coding at as low as 4 kbit/s, the feature of
reproduced signal is kept more significant than that of the linear predictor coding.
(Author abstract) 6 Refs.
Descriptors: *Speech coding; Fourier transforms; Time series analysis; Speech
analysis; Performance
Identifiers: Nonlinear discrete Fourier transform; Waveform coding
EI Classification Codes:
751.5 (Speech); 723.5 (Computer Applications); 921.3 (Mathematical
Transformations); 922.2 (Mathematical Statistics)
751 (Acoustics); 723 (Computer Software); 921 (Applied Mathematics); 922
(Statistical Methods)
9 of 25 Complete Record
DIALOG No: 04983317 EI Monthly No: EIP98034143196
Title: Parameter identification of flexible wind turbine system
Author: Bao, Nengsheng; Chen, Qingxin; Jiang, Tong
Corporate Source: Shantou Univ, Shantou, China
Source: Taiyangneng Xuebao/Acta Energiae Solaris Sinica v 18 n 4 1997. p 390-394
Publication Year: 1997
CODEN: TYNPDG ISSN: 0254-0096
Language: Chinese
Document Type: JA; (Journal Article) Treatment Code: T; (Theoretical); X;
(Experimental)
Abstract: Applying the theory of modern system identification, ARMAX stochastic
model structure and error prediction method, the experimental model of flexible wind
turbine system is presented. By comparing the results from identification and data
measured to improve the model, a perfect modelling of flexible wind turbine system
can be obtained. (Edited author abstract) 7 Refs.
Descriptors: *Wind turbines; Identification (control systems); Parameter estimation;
Models
Identifiers: Stochastic model
EI Classification Codes:
632.4 (Pneumatic Equipment & Machinery); 731.1 (Control Systems)
632 (Hydraulics & Pneumatics); 731 (Automatic Control Principles)
10 of 25 Complete Record
DIALOG No: 04974871 EI Monthly No: EIP98034117534
Title: Fast signal-dependent time-frequency representation
Author: Lin, Yimin; Chan, F.H.Y.; Lam, F.K.
Corporate Source: Shantou Univ, Guangdong, China
Conference Title: Proceedings of the 1996 18th Annual International Conference of
the IEEE Engineering in Medicine and Biology Society. Part 3 (of 5)
Conference Location: Amsterdam, Neth Conference Date: 19961031-19961103
Conference Sponsor: IEEE
Source: Annual International Conference of the IEEE Engineering in Medicine and
Biology - Proceedings v 3 1996. IEEE, Piscataway, NJ, USA,96CB36036. p 1041-1042
Publication Year: 1996
CODEN: CEMBAD ISSN: 0589-1019
Language: English
Conference Number: 48103
Document Type: CA; (Conference Article) Treatment Code: G; (General Review); T;
(Theoretical)
Abstract: In last few years, in order to overcome some limitations of the short
time Fourier transform (STFT), while avoiding the cross-terms that make the Wigner
distribution difficult to interpret, some signal-dependent time-frequency
representations (SDTFR) have been proposed. In this paper, we introduce a
computationally efficient signal-dependent time-frequency method which is suitable
for on-line analysis. This SDTFR uses a Gaussian window (GW) similar to STFT, but
varies the parameter sigma of the GW with time to achieve high signal concentration
and high resolution in time. The parameter sigma can be automatically calculated by
the slope of instantaneous frequency (IF) and instantaneous bandwidth (IB) at that
time. (Author abstract) 7 Refs.
Descriptors: *Signal processing; Functions; Time domain analysis; Frequency domain
analysis; Bandwidth; Fourier transforms; Computational methods
Identifiers: Signal dependent time frequency representations (SDTFR); Gaussian
window functions
EI Classification Codes:
716.1 (Information & Communication Theory); 722.4 (Digital Computers & Systems);
921.3 (Mathematical Transformations)
716 (Radar, Radio & TV Electronic Equipment); 722 (Computer Hardware); 921
(Applied Mathematics)
11 of 25 Complete Record
DIALOG No: 04961515 EI Monthly No: EIP97113935839
Title: 3D rotating stall stability model for axial flow compressor
Author: Cao, Ren-Jing; Zhou, Sheng
Corporate Source: Shantou Univ, Guangdong, China
Conference Title: Proceedings of the 1997 International Gas Turbine & Aeroengine
Congress & Exposition
Conference Location: Orlando, FL, USA Conference Date: 19970602-19970605
Conference Sponsor: ASME
Source: American Society of Mechanical Engineers (Paper) 1997. ASME, New York, NY,
USA. 6p 97-GT-209
Publication Year: 1997
CODEN: ASMSA4 ISSN: 0402-1215
Language: English
Conference Number: 47341
Document Type: CA; (Conference Article) Treatment Code: T; (Theoretical)
Abstract: Rotating stall phenomenon is usually characterized by 3D aerodynamic
stability behavior. The earlier models mainly considered the flow effects in terms
of 1D and 2D spatial variables. In order to involve the characteristics of the 3D
flow of the compressor, it is necessary to improve the existing rotating stall
stability models and further develop the models to consider the effects of the 3D
disturbance. In this paper, a new aerodynamic stability model concerning the effects
of a radial disturbance produced by the compressor, and explaining more mechanisms
about the aerodynamic stability of compressor is presented. Using the developed
rotating stall stability model, the stall margins are calculated and compared to
experimental data for two axial flow compressors. The calculated results show that
the developed 3D rotating stall stability model gives better stall margin prediction
than that by the 2D model. (Author abstract) 8 Refs.
Descriptors: *Compressors; Axial flow turbomachinery; Mathematical models;
Aerodynamics
Identifiers: Rotating stalls; Axial flow compressors
EI Classification Codes:
618.1 (Compressors); 612.3 (Gas Turbines & Engines); 651.1 (Aerodynamics,
General)
618 (Compressors & Pumps); 612 (Combustion Engines); 921 (Applied Mathematics);
651 (Aerodynamics)
12 of 25 Complete Record
DIALOG No: 04955678 EI Monthly No: EIP98024092036
Title: Predictable architecture for real-time systems
Author: Zhang, Lichen
Corporate Source: Shantou Univ, GuangDong Province, China
Conference Title: Proceedings of the 1997 1st International Conference on
Information, Communications and Signal Processing, ICICS. Part 3 (of 3)
Conference Location: Singapore, Singapore Conference Date: 19970909-19970912
Conference Sponsor: IEEE
Source: Trends in Information Systems Engineering and Wireless Multimedia
Communications Proceedings of the International Conference on Information,
Communications and Signal Processing, ICICS v 3 1997. IEEE, Piscataway, NJ, USA. p
1761-1765
Publication Year: 1997
CODEN: 002795
Language: English
Conference Number: 48010
Document Type: CA; (Conference Article) Treatment Code: G; (General Review)
Abstract: Architecture to support real-time application must have the ability to
achieve predictability. This paper surveys the problems and solutions related to
conventional architectures for predictable real-time systems. Issues covered include
caches, pipelines, context switches, real-time clock and hardware queues. This paper
also proposes the approaches in a constructive way that it is possible to design
computer architectures apt for real-time control. Such architectures avoid the
harmful features of conventional computers and allow worst-case timing analyses.
(Author abstract) 12 Refs.
Descriptors: *Computer architecture; Real time systems; Buffer storage; Pipeline
processing systems; Computer hardware
Identifiers: Predictable architectures
EI Classification Codes:
722.4 (Digital Computers & Systems); 722.1 (Data Storage, Equipment & Techniques)
722 (Computer Hardware)
13 of 25 Complete Record
DIALOG No: 04955616 EI Monthly No: EIP98024091974
Title: Scheduling algorithms for multiprocessor real-time systems
Author: Zhang, Lichen; Huang, Jiwu; Zheng, Yi
Corporate Source: Shantou Univ, GuangDong Province, China
Conference Title: Proceedings of the 1997 1st International Conference on
Information, Communications and Signal Processing, ICICS. Part 3 (of 3)
Conference Location: Singapore, Singapore Conference Date: 19970909-19970912
Conference Sponsor: IEEE
Source: Trends in Information Systems Engineering and Wireless Multimedia
Communications Proceedings of the International Conference on Information,
Communications and Signal Processing, ICICS v 3 1997. IEEE, Piscataway, NJ, USA. p
1470-1474
Publication Year: 1997
CODEN: 002795
Language: English
Conference Number: 48010
Document Type: CA; (Conference Article) Treatment Code: G; (General Review); T;
(Theoretical)
Abstract: Real-time systems are subject to fundamental user requirements, such as
correctness of the systems, taking into account timeliness and simultaneity, a high
degree of predictability. This means that the scheduling algorithm is an important
component of these systems. A scheduling algorithm is used to determine a schedule
for a set of tasks so that the task's deadlines and resource requirements are
satisfied. The potential speedup of applications has motivated the widespread use of
multiprocessors in recent years. In this paper, recent results on multiprocessor
real-time scheduling algorithms are reviewed. The review takes the form of an
analysis of the problems presented by different application requirements and
characteristics. A scheduling algorithm for real-time systems to be implemented on
multiprocessors is proposed. This algorithm is appropriate for real-time tasks with
the precedence constraints. (Author abstract) 16 Refs.
Descriptors: *Real time systems; Multiprocessing systems; Algorithms; Constraint
theory
Identifiers: Scheduling algorithms
EI Classification Codes:
722.4 (Digital Computers & Systems)
722 (Computer Hardware); 723 (Computer Software)
14 of 25 Complete Record
DIALOG No: 04954710 EI Monthly No: EIP98024083754
Title: Robust color edge detection using color-scale morphology
Author: Gangyi, Jiang; Yi, Zheng; Huifang, Chen
Corporate Source: Shantou Univ, Shantou, China
Conference Title: Proceedings of the 1996 IEEE Region 10 TENCON - Digital Signal
Processing Applications Conference. Part 1 (of 2)
Conference Location: Perth, Aust Conference Date: 19961126-19961129
Conference Sponsor: IEEE
Source: IEEE Region 10 Annual International Conference, Proceedings/TENCON v 1
1996. IEEE, Piscataway, NJ, USA,96CH36007. p 227-232
Publication Year: 1996
CODEN: 85QXAA
Language: English
Conference Number: 47959
Document Type: CA; (Conference Article) Treatment Code: T; (Theoretical)
Abstract: Color-scale morphological operations by flat structuring elements are
introduced in this paper. Color-scale alternative sequential filters are constructed
based on the fundamental color-scale morphological filters. In color-scale
morphological filters, the correlation between color components is utilized, so that
noise in color image is morphologically filtered. Furthermore, new schemes of color
edge detection are presented. Some experimental results show that the color-scale
alternative sequential filters can very powerfully eliminate noise in color images
without blurring edge in color image and the new methods of color edge detection are
robust and efficient. (Author abstract) 16 Refs.
Descriptors: *Edge detection; Color image processing; Mathematical morphology;
Optical filters
Identifiers: Color edge detection; Color scale morphological filters
EI Classification Codes:
723.5 (Computer Applications); 741.1 (Light/Optics); 723.2 (Data Processing);
741.3 (Optical Devices & Systems)
723 (Computer Software); 741 (Optics & Optical Devices); 921 (Applied
Mathematics)
15 of 25 Complete Record
DIALOG No: 04949888 EI Monthly No: EIP98024089631
Title: XPS investigation of GaAs-SiO//2 composite thin films deposited by Co-
sputtering
Author: Shi, Wangzhou; Lin, Kuixun; Lin, Xuangying
Corporate Source: Shantou Univ, Shantou, China
Source: Gongneng Cailiao/Journal of Functional Materials v 28 n 4 Aug 20 1997. p
366-367
Publication Year: 1997
CODEN: GOCAEA ISSN: 1001-9731
Language: Chinese
Document Type: JA; (Journal Article) Treatment Code: A; (Applications); X;
(Experimental)
Abstract: Chemical states of Ga, As, and Si in GaAs-SiO//2 composite thin film
deposited by a co-sputtering method have been investigated by XPS. The oxygen
deficiency of SiO//2 in thin film was detected by Si 2p electron XPS spectrum. The
influence of substrate temperature (Ts) during deposition on chemical states were
investigated. The results show that GA, As and Si exist mainly as GaAs and SiO//2
respectively in thin film. At higher Ts (about 400 degree C), there is a little of
oxides of As and Ga in films. The quantity of oxide depends on Ts during deposition
and is enhanced with the increase of Ts. (Edited author abstract) 6 Refs.
Descriptors: *Film preparation; Composite materials; Substrates; X ray
photoelectron spectroscopy; Deposition; Sputtering; Thermal effects; Nanotechnology
Identifiers: Nanometer composites; Sputtering deposited films
EI Classification Codes:
931.3 (Atomic & Molecular Physics)
813 (Coatings & Finishes); 931 (Applied Physics)
16 of 25 Complete Record
DIALOG No: 04934315 EI Monthly No: EIP98024054532
Title: Measurement of point moment mobility in the presence of non-zero cross
mobility
Author: Jianxin, Su; Gibbs, B.M.
Corporate Source: Shantou Univ, China
Source: Applied Acoustics v 54 n 1 May 1998. p 9-26
Publication Year: 1998
CODEN: AACOBL ISSN: 0003-682X
Language: English
Document Type: JA; (Journal Article) Treatment Code: T; (Theoretical)
Abstract: One of the main difficulties in measuring moment mobility is that of
generating a moment which is pure and of sufficient power. Measurement systems have
been proposed which consist of a pair of matched shakers, a shaker-lever system or an
actuator to a design by Petersson. All have been used to directly measure moment
mobility and results are encouraging in conditions where the cross mobility is small
or zero. Otherwise there is a discrepancy between the measured and true mobility
which is a function of the ratio between the unwanted vertical force and applied
moment and of the cross mobility at the receiver point. This error is discussed
theoretically and a correction term introduced to enable point moment mobility to be
measured directly. (Author abstract) 14 Refs.
Descriptors: *Vibration measurement; Velocity measurement; Actuators; Error
analysis; Measurement errors; Acoustic waves
Identifiers: Point moment mobility; Non zero cross mobility
EI Classification Codes:
943.2 (Mechanical Variables Measurements); 943.3 (Special Purpose Instruments);
732.1 (Control Equipment); 921.6 (Numerical Methods); 751.1 (Acoustic Waves)
943 (Mechanical & Miscellaneous Measuring Instruments); 732 (Control Devices);
921 (Applied Mathematics); 751 (Acoustics)
17 of 25 Complete Record
DIALOG No: 04916687 EI Monthly No: EIP97113942853
Title: Study of Ti-silicide film used in a Si:H solar cells
Author: Wu, Ping
Corporate Source: Shantou Univ, Shantou, China
Source: Gongneng Cailiao/Journal of Functional Materials v 28 n 3 June 20 1997. p
309-311
Publication Year: 1997
CODEN: GOCAEA ISSN: 1001-9731
Language: Chinese
Document Type: JA; (Journal Article) Treatment Code: A; (Applications); X;
(Experimental)
Abstract: After direct current sputtering Ti on ITO glass substrate and depositing
a-Si by rf flow discharge method, the formation of Ti-silicide has been studied. XPS
and RBS analyses were used to determine the TiSi//2 product and it could stop the
diffusion of In atoms of ITO effectively. The uS/VIS spectrophotometer was used to
measure the transmissivity of TiSi film and found the transmissivity of TiSi//2 was
higher than that ITO film. No potential was found after testing the characteristic
of Ti/a-Si interface. The resistivity of the product was about tens mu omega center
dot cm. This Ti-silicide film could be used in a Si:H solar cell as a top electrode.
(Edited author abstract) 8 Refs.
Descriptors: *Silicon compounds; Ceramic materials; Silicon solar cells; Optical
films; Titanium; Deposition; Sputtering
Identifiers: Titanium silicon compounds; Transparent conductive oxides
EI Classification Codes:
812.1 (Ceramics); 702.3 (Solar Cells)
812 (Ceramics & Refractories); 702 (Electric Batteries & Fuel Cells)
18 of 25 Complete Record
DIALOG No: 04916498 EI Monthly No: EIP97113942664
Title: Optimum direction analysis of aerodynamic optimum design for fixed pitch
wind turbine
Author: Chen, Yan; Hu, Shishan; Ye, Zhiquan
Corporate Source: Shantou Univ, Shantou, China
Source: Taiyangneng Xuebao/Acta Energiae Solaris Sinica v 18 n 3 July 1997. p 290-
296
Publication Year: 1997
CODEN: TYNPDG ISSN: 0254-0096
Language: Chinese
Document Type: JA; (Journal Article) Treatment Code: A; (Applications)
Abstract: The models and methods for the aerodynamic optimum design of wind
turbines were described. The effect of the change in the blade shape of fixed pitch
wind turbine on its aerodynamic characteristics was analyzed. The object and main
parameters for optimum design were pointed out. The optimum design of a 200 kW fixed
pitch wind turbine was given. (Edited author abstract) 7 Refs.
Descriptors: *Wind turbines; Turbomachine blades; Aerodynamics; Design;
Mathematical models; Optimization
Identifiers: Direction analysis; Aerodynamic design
EI Classification Codes:
615.8 (Wind Power); 651.1 (Aerodynamics, General)
615 (Thermoelectric & Other Power Generators); 651 (Aerodynamics)
19 of 25 Complete Record
DIALOG No: 04916475 EI Monthly No: EIP97113942641
Title: DSFD method for optimum design of wind turbine
Author: Hu, Shishan; Chen, Yan; Ye, Zhiquan
Corporate Source: Shantou Univ, Shantou, China
Source: Taiyangneng Xuebao/Acta Energiae Solaris Sinica v 18 n 2 Apr 1997. p 152-
156
Publication Year: 1997
CODEN: TYNPDG ISSN: 0254-0096
Language: Chinese
Document Type: JA; (Journal Article) Treatment Code: A; (Applications)
Abstract: DSFD (directly searching feasible directions) method was used for the
optimum design of wind turbine blade. Using this method and referring the design
parameters on Nanao 200 kW fixed pitch wind turbine, a series of wind turbine blade
design with satisfactory blade appearance and good performance was obtained. (Edited
author abstract) 3 Refs.
Descriptors: *Wind turbines; Parameter estimation; Design; Optimization
Identifiers: Feasible direction
EI Classification Codes:
615.8 (Wind Power)
615 (Thermoelectric & Other Power Generators)
20 of 25 Complete Record
DIALOG No: 04916458 EI Monthly No: EIP97113942624
Title: Modeling and analysis of the large wing turbine system
Author: Bao, Nengsheng; Cheng, Qingxing; Jiang, Tong
Corporate Source: Shantou Univ, Shantou, China
Source: Taiyangneng Xuebao/Acta Energiae Solaris Sinica v 18 n 1 Jan 1997. p 51-58
Publication Year: 1997
CODEN: TYNPDG ISSN: 0254-0096
Language: Chinese
Document Type: JA; (Journal Article) Treatment Code: A; (Applications); X;
(Experimental)
Abstract: A theoretical model of a large wind energy conversion system with its
numerical simulation is given. Models of aerodynamics, energy convertor and
asynchronous generator were established respectively, then the model linearization
and the algorithms were followed. Its results are analyzed. (Edited author
abstract) 5 Refs.
Descriptors: *Wind turbines; Wind power; Mathematical models; Computer simulation
Identifiers: Wind turbine generators; Digital simulation
EI Classification Codes:
615.8 (Wind Power); 921.6 (Numerical Methods)
615 (Thermoelectric & Other Power Generators); 921 (Applied Mathematics)
21 of 25 Complete Record
DIALOG No: 04885710 EI Monthly No: EIP2 193812503
Title: Cauchy problem for Navier-Stokes equations
Author: He, Cheng
Corporate Source: Shantou Univ, Guandong, China
Source: Journal of Mathematical Analysis and Applications v 209 n 1 May 1 1997. p
228-242
Publication Year: 1997
CODEN: JMANAK ISSN: 0022-247X
Language: English
Document Type: JA; (Journal Article) Treatment Code: T; (Theoretical)
Abstract: The results on the local existence, global existence, and the asymptotic
behaviors of strong solutions to the Cauchy problem for Navier-Stokes equations are
presented. The aim to is show the decay properties of the strong solution. Also,
the asymptotic behavior is studied and the decay rate is given for solutions of the
Navier-Stokes equations with non-zero external force under appropriate conditions.
21 Refs.
Descriptors: *Mathematical techniques; Problem solving; Navier Stokes equations;
Vectors; Fluid dynamics; Velocity; Mathematical models; Mathematical operators;
Nonlinear equations; Approximation theory
Identifiers: Cauchy problem; Inequality
EI Classification Codes:
921.2 (Calculus); 921.1 (Algebra); 931.1 (Mechanics); 921.6 (Numerical Methods)
921 (Applied Mathematics); 931 (Applied Physics)
22 of 25 Complete Record
DIALOG No: 04871689 EI Monthly No: EIP97113929803
Title: Scheduling algorithms for parallel real-time systems
Author: Zhang, Lichen; Huang, Jiwu; Zheng, Yi
Corporate Source: Shantou Univ, GuangDong Province, China
Conference Title: Proceedings of the 1997 6th IEEE Pacific Rim Conference on
Communications, Computers and Signal Processing. Part 2 (of 2)
Conference Location: Victoria, Can Conference Date: 19970820-19970822
Conference Sponsor: IEEE
Source: IEEE Pacific RIM Conference on Communications, Computers, and Signal
Processing - Proceedings v 2 1997. IEEE, Piscataway, NJ, USA,97CH36060. p 968-971
Publication Year: 1997
CODEN: 002121
Language: English
Conference Number: 47264
Document Type: CA; (Conference Article) Treatment Code: G; (General Review); T;
(Theoretical)
Abstract: The potential speedup of applications has motivated the widespread use of
multiprocessors in recent years. Future real-time systems are likely to be built on
multiprocessor architectures. Efficient scheduling algorithms for multiprocessors
are needed so that tasks will have predictable behaviors. In this paper, recent
results on multiprocessor real-time scheduling algorithms are reviewed. The review
takes the form of an analysis of the problems presented by different application
requirements and characteristics. A scheduling algorithm for real-time systems to be
implemented on multiprocessors is proposed. This algorithm is appropriate for real-
time tasks with the precedence constraints. (Author abstract) 16 Refs.
Descriptors: *Parallel algorithms; Real time systems; Parallel processing systems;
Computer systems programming; Resource allocation; Optimization; Computational
complexity
Identifiers: Scheduling algorithms
EI Classification Codes:
722.4 (Digital Computers & Systems); 921.5 (Optimization Techniques); 721.1
(Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory,
Programming Theory)
723 (Computer Software); 722 (Computer Hardware); 921 (Applied Mathematics); 721
(Computer Circuits & Logic Elements)
23 of 25 Complete Record
DIALOG No: 04871688 EI Monthly No: EIP97113929802
Title: Integrating different tools to develop multiprocessor real-time systems
Author: Zhang, Lichen
Corporate Source: Shantou Univ, GuangDong Province, China
Conference Title: Proceedings of the 1997 6th IEEE Pacific Rim Conference on
Communications, Computers and Signal Processing. Part 2 (of 2)
Conference Location: Victoria, Can Conference Date: 19970820-19970822
Conference Sponsor: IEEE
Source: IEEE Pacific RIM Conference on Communications, Computers, and Signal
Processing - Proceedings v 2 1997. IEEE, Piscataway, NJ, USA,97CH36060. p 964-967
Publication Year: 1997
CODEN: 002121
Language: English
Conference Number: 47264
Document Type: CA; (Conference Article) Treatment Code: T; (Theoretical)
Abstract: This paper presents a working environment for the development of real-
time systems. This working environment is a collection of CASE tools, which are a
heavy graphical orientation, intended for the specification, analysis, design, and
implementation of large and complex real-time systems. It enables a user to prepare,
analyze, and debug diagrammatic, yet precise, descriptions of the objects of the
system under development from five interrelated points of views, capturing
environment, functionality, behavior, performance and hardware. These views are
represented by a set of graphical languages. The most intricate of which are the
tools of performance analysis, used to support the analysis of temporal behavior of
systems for completeness, correctness, feasibility and predictability. In addition
to the use of performance analysis tools, the main novelty of our working environment
is in the fact that it can design real-time systems at different levels of
granularity, carry out rigorous executions, simulations and animation of the
described system, and create running code automatically. (Author abstract) 13 Refs.
Descriptors: *Real time systems; Multiprocessing systems; Computer aided software
engineering; Computer debugging; Animation; Computer simulation; Computer systems
programming; Computer hardware
Identifiers: Graphical languages
EI Classification Codes:
722.4 (Digital Computers & Systems); 723.1 (Computer Programming); 723.5
(Computer Applications)
722 (Computer Hardware); 723 (Computer Software)
24 of 25 Complete Record
DIALOG No: 04871687 EI Monthly No: EIP97113929801
Title: Worst case timing analysis for real-time programs
Author: Zhang, Lichen
Corporate Source: Shantou Univ, GuangDong Province, China
Conference Title: Proceedings of the 1997 6th IEEE Pacific Rim Conference on
Communications, Computers and Signal Processing. Part 2 (of 2)
Conference Location: Victoria, Can Conference Date: 19970820-19970822
Conference Sponsor: IEEE
Source: IEEE Pacific RIM Conference on Communications, Computers, and Signal
Processing - Proceedings v 2 1997. IEEE, Piscataway, NJ, USA,97CH36060. p 960-963
Publication Year: 1997
CODEN: 002121
Language: English
Conference Number: 47264
Document Type: CA; (Conference Article) Treatment Code: T; (Theoretical)
Abstract: Real-time software is increasingly used in safety-critical embedded
systems. For these real-time systems, tasks have timing requirements (i.e.,
deadlines) that must be met for correct operation. Various scheduling algorithms
have been proposed to guarantee task's deadlines based on the worst case execution
time of each task. Obviously, the worst case execution time of a task is of
significant importance for the construction and verification of real-time system.
This paper discusses the problems and solutions related to accurate and safe
estimation of worst case execution for real-time program. Issues covered include
caches, pipelines and task block by synchronization. This paper also presents a
timing tool and some experimental results of estimation of worst-case execution time.
(Author abstract) 11 Refs.
Descriptors: *Real time systems; Computer systems programming; Computer software;
Response time (computer systems); Buffer storage; Pipeline processing systems;
Synchronization
Identifiers: Worst case timing analysis; Worst case execution time (WCET)
EI Classification Codes:
722.4 (Digital Computers & Systems); 723.1 (Computer Programming); 722.1 (Data
Storage, Equipment & Techniques)
722 (Computer Hardware); 723 (Computer Software)
25 of 25 Complete Record
DIALOG No: 04871566 EI Monthly No: EIP97113930314
Title: Combining formal specification methods and informal specification methods
for requirement analysis
Author: Zhang, Lichen
Corporate Source: Shantou Univ, GuangDong Province, China
Conference Title: Proceedings of the 1997 6th IEEE Pacific Rim Conference on
Communications, Computers and Signal Processing. Part 1 (of 2)
Conference Location: Victoria, Can Conference Date: 19970820-19970822
Conference Sponsor: IEEE
Source: IEEE Pacific RIM Conference on Communications, Computers, and Signal
Processing - Proceedings v 1 1997. IEEE, Piscataway, NJ, USA,97CH36060. p 444-447
Publication Year: 1997
CODEN: 002121
Language: English
Conference Number: 47264
Document Type: CA; (Conference Article) Treatment Code: T; (Theoretical)
Abstract: In this paper, we advocate an approach to model the required software
process with the structured methods, and then to apply formal analysis procedures to
the model in order to ensure that the software requirements model satisfies required
system function and performance goals and constraints, including safety. In this
paper, we experiment the combination DFDs method and Interval Temporal Logic for
requirement analysis. A particular example, the controller for a system of passenger
lifts, is chosen for illustration. (Author abstract) 8 Refs.
Descriptors: *Software engineering; Formal logic; Control systems
Identifiers: Interval temporal logic
EI Classification Codes:
723.1 (Computer Programming); 721.1 (Computer Theory, Includes Formal Logic,
Automata Theory, Switching Theory, Programming Theory); 731.1 (Control Systems)
723 (Computer Software); 721 (Computer Circuits & Logic Elements); 731
(Automatic Control Principles)
2.《科学文摘（INSPEC)》
1 of 19
INSPEC 6044644 B1998-11-8130F-006
Doc Type: Journal Paper
Title: Numerical calculation of lightning induced voltages
on overhead distribution lines
Authors: Xu Du*; Jiang Yongping*; Zhou Shaoyong*; Lin Ming*
Affiliation:* Dept. of Mech. Eng., Shantou Univ., China
Journal: Proceedings of the CSEE vol.18, no.4 p.299-301
Publisher: Chinese Soc. Electr. Eng
Date: July 1998
Country of Publication: China
ISSN: 0258-8013 CODEN: ZDGXER
SICI: 0258-8013(199807)18:4L.299:NCLI;1-U
Language: Chinese
Treatment: Theoretical or Mathematical
Abstract: Lightning induced voltages on overhead power distribution lines are
calculated numerically in this paper. The computational method is
introduced and the computational results are compared with the results
of theoretical formulae developed by P. Chowdhuri in 1991. A number of
numerical results are provided. Finally the distribution
characteristics of lightning induced voltages are analyzed in detail.
(5 Refs.)
Classification: B8130F (Overhead power lines ); B8120J (Distribution networks
120J); B8110 (Power systems ); B0290Z (Other numerical methods
90Z)
Thesaurus: distribution networks; lightning; numerical analysis; overvoltage;
power overhead lines; power system transients
Free Terms: overhead power distribution lines; lightning induced voltages;
computational method; distribution characteristics; numerical
calculation
2 of 19
INSPEC 6044643 B1998-11-8340-016; C1998-11-7410B-068
Doc Type: Journal Paper
Title: Method and implementation of fully digitized
continuous microstep for step motor
Authors: Xu Du*; Jiang Yongping*; Zhou Shouyang*; Lin Ming*
Affiliation:* Dept. of Mech. Eng., Shantou Univ., Guangdong,
China
Journal: Proceedings of the CSEE vol.18, no.4 p.295-8
Publisher: Chinese Soc. Electr. Eng
Date: July 1998
Country of Publication: China
ISSN: 0258-8013 CODEN: ZDGXER
SICI: 0258-8013(199807)18:4L.295:MIFD;1-P
Language: Chinese
Treatment: Application, Practical
Abstract: This paper presents a new method of fully digitized continuous
microstep control for stepping motors and goes into details on the
E-PROM and PWM-based implementation principle of this method. The
advantages, reliability and practicality of this method have been
testified by experimental results of a 0~15 continous microstep
control circuit based on this method. (7 Refs.)
Classification: B8340 (Small and special purpose electric machines ); B1265D
(Memory circuits ); C7410B (Power engineering computing );
C3340H (Control of electric power systems ); C7420 (Control engin
eering computing ); C5320G (Semiconductor storage )
Thesaurus: digital control; EPROM; machine control; power engineering computing;
pulse width modulation; stepping motors
Free Terms: stepping motors; fully digitized continuous microstep control;
E-PROM; PWM; implementation principle; advantages; reliability;
practicality
3 of 19
INSPEC 6021151 B1998-10-6120B-123
Doc Type: Conference Paper
Title: An integrated classifier in classified coding
Authors: Jiwu Huang*; Li Chen*; Shi, Y.Q.
Affiliation:* Dept. of Electr. Eng., Shantou Univ., Guangdong,
China
Conf. Title: ISCAS '98. Proceedings of the 1998 IEEE
International Symposium on Circuits and Systems
(Cat. No.98CH36187)
p.146-9 vol.4
Publisher: IEEE, New York, NY
Date: 1998 6 vol. (xlv+603+489+674+615+557+656)
pp.
Country of Publication: USA
ISBN: 0 7803 4455 3
CCC: 0 7803 4455 3/98/$10.00
Language: English
Conf. Date: 31 May-3 June 1998
Conf. Loc: Monterey, CA, USA
Treatment: Theoretical or Mathematical
Abstract: Block coding is one of the most common schemes in image data
compression. To improve the performance of block coding, a
classification can be applied to the blocks prior to coding. This
results in an adaptive block coding method, i.e., classified coding.
In this paper, an integrated classifier taking the features of the
human vision system (HVS) into account in classified coding is
proposed. First, we present a classifier based on the local contrast
sensitivity of the HVS. Compared with the commonly used local
variance-based classifier (LVC), it possesses lower computational
complexity while preserving almost the same performance. To improve
upon the single-parameter classifiers' poor adaptivity, we, then,
propose an integrated classifier which is composed of three
independent classification units. It exhibits the complementarity of
different classifiers. The simulation results demonstrate that the
proposed classifier performs better than the LVC. (9 Refs.)
Classification: B6120B (Codes ); B6140C (Optical information, image and video
signal processing )
Thesaurus: adaptive codes; block codes; data compression; image classification;
image coding
Free Terms: integrated classifier; classified coding; image data compression;
adaptive block coding; human vision system; local contrast;
computational complexity; simulation
INSPEC 6004323 C1998-10-6110F-003
Doc Type: Conference Paper
Title: Integrating different views to develop complex
real-time systems
Authors: Lichen Zhang*
Affiliation:* Sci. Center, Shantou Univ., Guangdong, China
Conf. Title: Real Time Programming 1996. (WRTP'96). A
Proceedings Volume from the IFAC Workshop
p.115-20
Editors: Pereira, C.E.; Halang, W.A.
Publisher: Pergamon, Oxford
Date: 1997 vi+155 pp.
Country of Publication: UK
ISBN: 0 08 042614 X
Language: English
Page 2, 15 Apr 99
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Conf. Date: 4-6 Nov. 1996
Conf. Loc: Gramado, Brazil
Conf. Sponsors: IFAC; IFIP
Treatment: Practical
Abstract: Views are vehicles for separation of concerns. They allow developers
to address only those concerns or criteria that are of interest,
ignoring others that are unrelated. For complex real-time systems,
there are usually multiple parties involved in system development,
which are concerned with different views of a system. This paper
discusses a single design methodology that covers all phases of the
life cycle, ensuring that specific real-time system requirements of
the software will be met. This methodology emphasizes the
identification of different views on the system under construction.
Each of these views can be constructed using common notations and
techniques, including structured notations as well as formal
specification. The proposed methodology is illustrated by specifying a
heater system. (25 Refs.)
Classification: C6110F (Formal methods )
Thesaurus: formal specification; real-time systems
Free Terms: complex real-time systems; views; system development; design
methodology; system life cycle; system requirements; common notations;
structured notations; formal specification; heater system
INSPEC 5991194 B1998-09-6140C-573; C1998-09-5260B-281
Doc Type: Conference Paper
Title: Pseudocolor processing for nature images
Authors: Jiwu, H.*; Yungao, Z.*
Affiliation:* Dept. of Electron. Eng., Shantou Univ., Guangdong,
China
Conf. Title: Proceedings of the IASTED International Conference:
Signal and Image Processing (SIP-96)
p.237-40
Editors: Namazi, N.M.; Matthews, K.
Publisher: IASTED, Anaheim, CA
Date: 1996 vi+363 pp.
Country of Publication: USA
ISBN: 0 88986 215 X
Language: English
Conf. Date: 11-14 Nov. 1996
Conf. Loc: Orlando, FL, USA
Conf. Sponsors: IASTED
Treatment: Practical, Theoretical or Mathematical
Abstract: Pseudocolor image processing is a useful method for enhancing
black-white images since the human eye is more sensitive to colors
than to graylevels. Generally, image pseudocoloring can be summarized
in two steps: a) selecting colors used to represent the graylevels,
and b) mapping graylevels into those colors. Conventional
pseudocoloring methods often produce ludicrous results in vision. The
reason for this is that people select the colors arbitrarily without
considering the sensitivity of the human eye to colors in these
approaches. In this paper, we propose a pseudocolor enhancement
algorithm based on the color sensitivity of the human vision system
and non-uniform quantization. We improve the visual quality of
pseudocoloring images in two ways. Firstly, we select the transform
relationship between the graylevels and the colors carefully. The
selection is based on the relative luminous efficiency function of
HVS. Secondly, we use non-uniform quantization when we map the
graylevels into colors. We keep the same number of pixels in each
color adaptively. The experimental results show the effectiveness of
the algorithm. (6 Refs.)
Classification: B6140C (Optical information, image and video signal processing
Page 3, 15 Apr 99
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); C5260B (Computer vision and image processing techniques ); C12
50 (Pattern recognition )
Thesaurus: image colour analysis; image enhancement; image representation;
quantisation (signal); visual perception
Free Terms: black-white images; nature images; pseudocolor image processing;
human eye; graylevel; pseudocolor enhancement algorithm; color
sensitivity; human vision system; non-uniform quantization; relative
luminous efficiency function; image enhancement
INSPEC 5991193 B1998-09-6140C-572; C1998-09-5260B-280
Doc Type: Conference Paper
Title: Postfiltering of block effects by edge map analysis
Authors: Jiwu, H.*; Xianhua, D.*
Affiliation:* Dept. of Electron. Eng., Shantou Univ., Guangdong,
China
Conf. Title: Proceedings of the IASTED International Conference:
Signal and Image Processing (SIP-96)
p.233-6
Editors: Namazi, N.M.; Matthews, K.
Publisher: IASTED, Anaheim, CA
Date: 1996 vi+363 pp.
Country of Publication: USA
ISBN: 0 88986 215 X
Language: English
Conf. Date: 11-14 Nov. 1996
Conf. Loc: Orlando, FL, USA
Conf. Sponsors: IASTED
Treatment: Theoretical or Mathematical
Abstract: Block coding provides many attractive features for image data
compression with high compression ratios. However, block coding
usually introduces block effects in the reconstructed images, which
degrades the quality of the images. It is an important problem to
reduce block effects in block coding. In this paper, we address the
problem of postprocessing on the decoded images and present an
adaptive space-variant filter based edge map analysis. In the proposed
algorithm, we use an edge detector on the reconstructed image to
obtain an edge map. For each pixel in the decoded image f(x,y), a 5*5
neighborhood was analyzed via the edge map. Based on the analysis, we
classified the pixels to be processed into two classes: edge pixels
and non-edge pixels. Finally, we applied a 1-D directional filter and
a 2-D weighted filter to these pixels accordingly. Experimental
results showed that the algorithm improved both the visual quality and
signal-to-noise ratio of the reconstructed image. (11 Refs.)
Classification: B6140C (Optical information, image and video signal processing
); B6120B (Codes ); C5260B (Computer vision and image processing
techniques ); C1250 (Pattern recognition )
Thesaurus: adaptive filters; block codes; data compression; edge detection;
image coding; image reconstruction; smoothing methods
Free Terms: postfiltering; block effects; edge map analysis; block coding; image
data compression; compression ratios; reconstructed images;
postprocessing; decoded images; adaptive space-variant filter; edge
detector; edge pixels; non-edge pixels; 1-D directional filter; 2-D
weighted filter; visual quality; image smoothing
INSPEC 5991169 B1998-09-6140C-565; C1998-09-5260B-274
Doc Type: Conference Paper
Title: Classified coding based on DCT and polynomial
Page 4, 15 Apr 99
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approximation
Authors: Huang, J.*; Zhang, L.*
Affiliation:* Dept. of Electron. Eng., Shantou Univ, Guangdong,
China
Conf. Title: Proceedings of the IASTED International Conference:
Signal and Image Processing (SIP-96)
p.115-18
Editors: Namazi, N.M.; Matthews, K.
Publisher: IASTED, Anaheim, CA
Date: 1996 vi+363 pp.
Country of Publication: USA
ISBN: 0 88986 215 X
Language: English
Conf. Date: 11-14 Nov. 1996
Conf. Loc: Orlando, FL, USA
Conf. Sponsors: IASTED
Treatment: Practical, Theoretical or Mathematical
Abstract: Classified block coding has attracted more attention recently because
of its advantages in implementation and high compression rate.
Important problems in classified block coding are classification of
blocks and efficient coding of the blocks. We propose a classified
block coding algorithm combining DCT and polynomial approximation. The
original image is split into 8*8 blocks. By using the features of the
human vision system and mean square error, we present a novel method
for classifying these blocks into four classes: constant blocks,
smooth blocks, coarse blocks and very coarse blocks. The constant
blocks and smooth blocks are coded by means of 0-order and 1-order
polynomials respectively. For the coarse and very coarse blocks, we
perform the DCT on them and code their DCT coefficients by
quantization and run-length coding. (12 Refs.)
Classification: B6140C (Optical information, image and video signal processing
); B6120B (Codes ); B0290Z (Other numerical methods ); B029
0F (Interpolation and function approximation ); C5260B (Computer
vision and image processing techniques ); C1250 (Pattern recognit
ion ); C4190 (Other numerical methods ); C4130 (Interpolation
and function approximation )
Thesaurus: approximation theory; data compression; discrete cosine transforms;
image classification; image coding; image segmentation; polynomials;
quantisation (signal); runlength codes; transform coding
Free Terms: DCT; polynomial approximation; compression rate; classified block
coding; image splitting; human vision system; mean square error;
constant blocks; smooth blocks; coarse blocks; very coarse blocks;
0-order polynomials; 1-order polynomials; quantization; run-length
coding
INSPEC 5985104 B1998-09-6130-057
Doc Type: Conference Paper
Title: Nonlinear discrete Fourier transformer for the time
series analysis and application to speech coding
Authors: Dai Xianhua*
Affiliation:* Dept. of Electron., Shantou Univ, Guangdong, China
Conf. Title: TENCON '97 Brisbane - Australia. Proceedings of
IEEE TENCON '97. IEEE Region 10 Annual Conference.
Speech and Image Technologies for Computing and
Telecommunications (Cat. No.97CH36162)
p.613-16 vol.2
Editors: Deriche, M.; Moody, M.; Bennamoun, M.
Publisher: IEEE, New York, NY
Date: 1997 2 vol. xxiv+850 pp.
Country of Publication: USA
ISBN: 0 7803 4365 4
Page 5, 15 Apr 99
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Language: English
Conf. Date: 2-4 Dec. 1997
Conf. Loc: Brisbane, Qld., Australia
Conf. Sponsors: IEEE Region 10; Queensland Univ.
Technol.; IEEE Queensland Sect.; Univ. Queensland;
Griffith Univ
Treatment: Theoretical or Mathematical
Abstract: The primary motivation of the paper is to investigate waveform coding
of a speech signal. The paper presents a new signal analyzing tool-the
`nonlinear discrete Fourier transform (NDFT) which has an improved
signal analysis performance. By virtue of the NDFT, waveform coding of
the speech signal with a long segment (for example a segment with 512
or 1024 samples) is studied. The new coding method provides an
improved performance of the speech coding at as low as 4 kbit/s, the
feature of the reproduced signal is kept more significant than that of
the linear predictor coding. (6 Refs.)
Classification: B6130 (Speech analysis and processing techniques ); B6120B
(Codes )
Thesaurus: Fourier transforms; speech coding; time series; transform coding
Free Terms: nonlinear discrete Fourier transformer; time series analysis; speech
coding; waveform coding; signal analyzing tool; signal analysis
performance; NDFT; speech signal; 4 kbit/s
Numerical Index: bit rate 4.0E+03 bit/s
INSPEC 5984900 C1998-09-5440-018
Doc Type: Conference Paper
Title: Scheduling algorithms for multiprocessor real-time
systems
Authors: Lichen Zhang*; Jiwu Huang*; Yi Zheng*
Affiliation:* Sci. Centre, Shantou Univ., Guangdong, China
Conf. Title: Proceedings of ICICS, 1997 International Conference
on Information, Communications and Signal
Processing. Theme: Trends in Information Systems
Engineering and Wireless Multimedia Communications
(Cat. No.97TH8237)
p.1470-4 vol.3
Publisher: IEEE, New York, NY
Date: 1997 3 vol. xxxiv+1819 pp.
Country of Publication: USA
ISBN: 0 7803 3676 3
CCC: 0 7803 3676 3/97/$10.00
Language: English
Conf. Date: 9-12 Sept. 1997
Conf. Loc: Singapore
Treatment: Practical
Abstract: Real-time systems are subject to fundamental user requirements, such
as correctness of the systems, taking into account timeliness and
simultaneity, a high degree of predictability. This means that the
scheduling algorithm is an important component of these systems. A
scheduling algorithm is used to determine a schedule for a set of
tasks so that the task's deadlines and resource requirements are
satisfied. The potential speedup of applications has motivated the
widespread use of multiprocessors in recent years. In this paper,
recent results on multiprocessor real-time scheduling algorithms are
reviewed. The review takes the form of an analysis of the problems
presented by different application requirements and characteristics. A
scheduling algorithm for real-time systems to be implemented on
multiprocessors is proposed. This algorithm is appropriate for
real-time tasks with the precedence constraints. (16 Refs.)
Classification: C5440 (Multiprocessing systems ); C6150N (Distributed systems
software )
Page 6, 15 Apr 99
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Thesaurus: multiprocessing systems; processor scheduling; real-time systems
Free Terms: scheduling algorithms; multiprocessor real-time systems; user
requirements; timeliness; simultaneity; resource requirements;
application requirements
INSPEC 5984439 B1998-09-6140C-326; C1998-09-1250-183
Doc Type: Conference Paper
Title: Edge detection of color image using color-scale
morphological transforms
Authors: Zheng, Y.*; Jiang, G.*; Choi, T.
Affiliation:* Open Lab. of Artificial Intelligence Pattern
Recognition, Shantou Univ., Guangdong, China
Conf. Title: Proceedings of the IASTED International Conference:
Signal and Image Processing (SIP-96)
p.305-9
Editors: Namazi, N.M.; Matthews, K.
Publisher: IASTED, Anaheim, CA
Date: 1996 vi+363 pp.
Country of Publication: USA
ISBN: 0 88986 215 X
Language: English
Conf. Date: 11-14 Nov. 1996
Conf. Loc: Orlando, FL, USA
Conf. Sponsors: IASTED
Treatment: Theoretical or Mathematical, Experimental
Abstract: Edge detection is the most fundamental and important step in image
analysis and computer vision. A class of color-scale morphological
transforms of color images with a flat structuring element are
proposed, which are based on the RGB (red-green-blue) color space, as
extensions of gray-scale morphology. Properties of color-scale
morphological transforms are discussed, and color-scale morphological
filters are experimentally analyzed. New schemes for edge detection of
color images are developed. Some experimental results show that the
new edge detectors are efficient and robust. (14 Refs.)
Classification: B6140C (Optical information, image and video signal processing
); B0290Z (Other numerical methods ); B0220 (Mathematical analysi
s ); C1250 (Pattern recognition ); C5260B (Computer vision an
d image processing techniques ); C4190 (Other numerical methods
4190); C1120 (Mathematical analysis )
Thesaurus: computer vision; edge detection; filtering theory; image colour
analysis; image resolution; mathematical morphology; transforms
Free Terms: edge detection; color image; color-scale morphological transforms;
image analysis; computer vision; flat structuring element; RGB color
space; gray-scale morphology; morphological filters
INSPEC 5978960 C1998-09-5220P-006
Doc Type: Conference Paper
Title: Predictable architecture for real-time systems
Authors: Lichen Zhang*
Affiliation:* Inst. of AI&PR, Shantou Univ., Guangdong, China
Conf. Title: Proceedings of ICICS, 1997 International Conference
on Information, Communications and Signal
Processing. Theme: Trends in Information Systems
Engineering and Wireless Multimedia Communications
(Cat. No.97TH8237)
p.1761-5 vol.3
Publisher: IEEE, New York, NY
Date: 1997 3 vol. xxxiv+1819 pp.
Page 7, 15 Apr 99
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Country of Publication: USA
ISBN: 0 7803 3676 3
CCC: 0 7803 3676 3/97/$10.00
Language: English
Conf. Date: 9-12 Sept. 1997
Conf. Loc: Singapore
Treatment: Application, Practical
Abstract: Architecture used to support real-time applications must have the
ability to achieve predictability. This paper surveys the problems and
solutions related to conventional architectures for predictable
real-time systems. Issues covered include caches, pipelines, context
switches, real-time clock and hardware queues. This paper, also
proposes the approaches in a constructive way that it is possible to
design computer architectures that are apt for real-time control. Such
architectures avoid the harmful features of conventional computers and
allow worst-case timing analyses. (12 Refs.)
Classification: C5220P (Parallel architecture ); C6120 (File organisation
)
Thesaurus: cache storage; clocks; computer architecture; pipeline processing;
real-time systems
Free Terms: real-time systems; predictable architecture; real-time applications;
real-time control; caches; pipelines; context switches; real-time
clock; hardware queues; computer architecture design; worst-case
timing analysis
INSPEC 5976801 B1998-09-0290F-014; C1998-09-4130-015
Doc Type: Journal Paper
Title: A splitting iteration method for double X/sub
0/-breaking bifurcation points
Authors: Rui-Song Ye*
Affiliation:* Inst. of Math., Shantou Univ., Guangdong, China
Journal: Journal of Computational Mathematics vol.16, no.3
p.267-74
Publisher: ICMSEC Chinese Acd. Sci
Date: May 1998
Country of Publication: China
ISSN: 0254-9409 CODEN: JCMMEB
SICI: 0254-9409(199805)16:3L.267:SIMD;1-V
Language: English
Treatment: Theoretical or Mathematical
Abstract: A splitting iteration method is proposed to compute double X/sub
0/-breaking bifurcation points. The method will reduce the
computational work and storage, it converges linearly with an
adjustable speed. Numerical computation shows the effectiveness of
splitting iteration method. (8 Refs.)
Classification: B0290F (Interpolation and function approximation ); C4130
(Interpolation and function approximation )
Thesaurus: bifurcation; convergence of numerical methods; iterative methods
Free Terms: splitting iteration; bifurcation points; converges
INSPEC 5975617 C1998-09-1290F-022
Doc Type: Journal Paper
Title: A concurrent approach to cell formation and
assignment of identical machines in group technology
Authors: Wu, N.*
Affiliation:* Sci. Center, Shantou Univ., Guangdong, China
Journal: International Journal of Production Research
Page 8, 15 Apr 99
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vol.36, no.8 p.2099-114
Publisher: Taylor & Francis
Date: Aug. 1998
Country of Publication: UK
ISSN: 0020-7543 CODEN: IJPRB8
SICI: 0020-7543(199808)36:8L.2099:CACF;1-G
CCC: 0020-7543/98/$12.00
Language: English
Treatment: Theoretical or Mathematical
Abstract: In designing a cellular manufacturing system, an important way to
reduce and simplify intercell flows is to identify shared machines and
duplicate them to some cells. However, the shared machines may not be
properly identified by the existing cell formation methods. Thus, some
unnecessary machine duplication may be made in the sense of capacity
requirement and capital investment. In fact, for practical
applications, the number of machines of a machine type should be
determined by the capacity requirement of the parts to be produced in
the system, and should be the constraint for the cell formation
problem. Therefore, multiple identical machines should be
appropriately assigned into different cells in designing a cellular
manufacturing system. To overcome this drawback of the existing
methods, in this paper a network model is developed for the design of
a cellular manufacturing system. In the model, the machine type which
has only one machine is represented by a simple node. The machine type
which has two or more machines is represented by a complex node. Thus,
this model can describe multiple machines of the same type. Based on
this model, a new approach is presented. By the proposed approach, the
cell formation problem and the proper assignment of identical machines
are solved concurrently. Therefore, the proposed approach provides a
more effective solution than the existing methods. (33 Refs.)
Classification: C1290F (Systems theory applications in industry )
Thesaurus: concurrent engineering; production control
Free Terms: concurrent approach; cell formation; identical machine assignment;
group technology; GT; cellular manufacturing system; intercell flows;
capacity requirement; capital investment; multiple identical machines
INSPEC 5952898 A1998-15-8770-002; B1998-08-7510-006; C1998-08-7330-079
Doc Type: Conference Paper
Title: A fast signal-dependent time-frequency
representation
Authors: Yimin Lin*; Chan, F.H.Y.; Lam, F.K.
Affiliation:* Dept. of Phys., Shantou Univ., Guangdong, China
Conf. Title: Proceedings of the 18th Annual International
Conference of the IEEE Engineering in Medicine and
Biology Society. `Bridging Disciplines for
Biomedicine' (Cat. No.96CH36036)
p.1041-2 vol.3
Editors: Boom, H.; Robinson, C.; Rutten, W.; Neuman, M.;
Wijkstra, H.
Publisher: IEEE, New York, NY
Date: 1997 5 vol. xxxiv+2315 pp.
Country of Publication: USA
ISBN: 0 7803 3811 1
CCC: 0 7803 3811 1/97/$10.00
Language: English
Conf. Date: 31 Oct.-3 Nov. 1996
Conf. Loc: Amsterdam, Netherlands
Conf. Sponsors: Int. Federation of Med. & Biol.
Eng.; Eur. Soc. Eng. & Med
Treatment: Theoretical or Mathematical
Page 9, 15 Apr 99
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Abstract: In last few years, in order to overcome same limitations of the short
time Fourier transform (STFT), while avoiding the cross-terms that
make the Wigner distribution difficult to interpret, some
signal-dependent time-frequency representations (SDTFR) have been
proposed. In this paper, the authors introduce a computationally
efficient signal-dependent time-frequency method which is suitable for
on-line analysis. This SDTFR uses a Gaussian window (GW) similar to
STFT, but varies the parameter sigma of the GW with time to achieve
high signal concentration and high resolution in time. The parameter
sigma can be automatically calculated by the slope of instantaneous
frequency (IF) and instantaneous bandwidth (IB) at that time. (7
Refs.)
Classification: A8770 (Biomedical engineering ); A8710 (General, theoretical,
and mathematical biophysics ); B7510 (Biomedical measurement and i
maging ); B6140 (Signal processing and detection ); C7330 (Bi
ology and medical computing ); C5260 (Digital signal processing
260)
Thesaurus: medical signal processing; time-frequency analysis
Free Terms: fast signal-dependent time-frequency representation; short time
Fourier transform; Wigner distribution; computationally efficient
signal-dependent time-frequency method; high signal concentration;
high resolution; instantaneous frequency; instantaneous bandwidth
INSPEC 5933241 C1998-07-5260B-110
Doc Type: Journal Paper
Title: Shape matching algorithm using binary rank order
transform
Authors: Jiang Gangyi*; Zheng Yi*; Yu Mei*
Affiliation:* The Open Lab. of AI&PR, Shantou Univ., China
Journal: Acta Electronica Sinica vol.26, no.4 p.24-8
Publisher: Chinese Inst. Electron
Date: April 1998
Country of Publication: China
ISSN: 0372-2112 CODEN: TTHPAG
SICI: 0372-2112(199804)26:4L.24:SMAU;1-S
Language: Chinese
Treatment: Application, Theoretical or Mathematical,
Experimental
Abstract: A shape matching algorithm is studied in this paper. Binary rank
order transform, a new morphological transform, is introduced. Shape
matching function is defined, and its properties are discussed. A set
of shape templates is constituted, and a new scheme of shape
recognition is proposed, which is simple, highly efficient, and easy
to a parallel implementation. Finally, the new algorithm is used for
recognition of indicatory traffic signs, the experimental results
showing its robustness and effectiveness. (11 Refs.)
Classification: C5260B (Computer vision and image processing techniques );
C1250 (Pattern recognition ); C1130 (Integral transforms ); C
4190 (Other numerical methods )
Thesaurus: image matching; parallel algorithms; transforms
Free Terms: shape matching algorithm; binary rank order transform; morphological
transform; shape templates; shape recognition; traffic sign
recognition; pattern recognition
INSPEC 5927333 C1998-07-6170-013
Doc Type: Conference Paper
Title: Sequence of knowledge bases and evaluating revision
approximately
Page 10, 15 Apr 99
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Authors: Kaile Su*
Affiliation:* Inst. of Comput. Sci., Shantou Univ., China
Conf. Title: 1997 IEEE International Conference on Intelligent
Processing Systems (Cat. No.97TH8335)
p.1159-63 vol.2
Publisher: IEEE, New York, NY
Date: 1997 2 vol. xxviii+1893 pp.
Country of Publication: USA
ISBN: 0 7803 4253 4
CCC: 0 7803 4253 4/97/$10.00
Language: English
Conf. Date: 28-31 Oct. 1997
Conf. Loc: Beijing, China
Conf. Sponsors: IEEE Ind. Electron. Soc.; Tsinghua
Univ., China; Northwestern Polytech. Univ., China;
Int. Technol. & Econ. Inst., State Council of China;
Chinese Assoc. Autom.; Nat. Natural Sci. Found.
China; Japanese Soc. Instrum. & Control Eng.; Japan
Soc. Fuzzy Theory & Syst.; Beijing Assoc. Sci. &
Technol. Exchange with Foreign Countries; IEEE
Control Soc. Beijing Chapter
Treatment: Practical
Abstract: This paper is motivated to give a recursion-theoretic framework to
investigate sequences of knowledge bases such as sequence of iterated
revisions and sequence of provisional outputs generated by a so-called
anytime algorithm. The global properties of sequence of general
knowledge bases are studied by using some concepts such as convergence
and logical convergence, which can be considered not only as
rationality postulates sequence of iterated revisions but also as
basic criteria of adequacy for anytime algorithms for evaluating
knowledge bases. A quite surprising result in this paper is that, even
in the full first-order logic case, revising a knowledge could be
effectively done by an anytime algorithm that produces quickly a first
version of the revision and refines it step by step, and these
versions approach the revision in limit. It is also investigated that
the problem of how to approximately compute an extension in default
logic. (27 Refs.)
Classification: C6170 (Expert systems ); C1230 (Artificial intelligence );
C4210 (Formal logic )
Thesaurus: formal logic; knowledge based systems; nonmonotonic reasoning
Free Terms: knowledge bases sequences; revision evaluation; recursion-theoretic
framework; iterated revisions; anytime algorithm; rationality
postulates sequence; first-order logic; default logic
INSPEC 5906127 C1998-06-7480-104
Doc Type: Conference Paper
Title: Concurrent engineering in injection mold
development
Authors: Zkang Peizhong*; Qiao Zongxuan*
Affiliation:* Mechatronics Eng. Dept., Shantou Univ., Guangdong,
China
Conf. Title: Proceedings. International Manufacturing
Engineering Conference
p.290-2
Editors: Marinescu, l.D.
Publisher: Freund Publishing House, London
Date: 1996 599 pp.
Country of Publication: UK
ISBN: 965 294 121 2
Availability: Freund Publishing House, Ltd, Suite 500, Chesham
House, 150 Regent Street, London W1R 5FA, UK
Page 11, 15 Apr 99
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Language: English
Conf. Date: 7-9 Aug. 1996
Conf. Loc: Storrs, CT, USA
Treatment: Practical
Abstract: The process of developing injection molds is one of multi-link,
multi-cycle, multi-modification and multi-improvement. In the plastics
industry, injection molding is one of the most widely employed methods
for the fabricating of polymer articles, being characterized by high
production rates and accurately dimensioned products. For a long time,
experience, intuition and trial-and error have been key factors in
mold development. The best solution for the injection mold development
is to employ a concurrent engineering (CE) approach to shorten the
development cycle and reduce costs considerably. The CE approach
emphasizes earlier communication and better co-ordination between
various departments, to allow jobs to be carried out concurrently. (2
Refs.)
Classification: C7480 (Production engineering computing )
Thesaurus: CAD/CAM; concurrent engineering; plastics industry
Free Terms: concurrent engineering; injection mold development; plastics
industry; polymer articles; high production rates; accurately
dimensioned products; development cycle; costs reduction
INSPEC 5902438 B1998-06-6140C-226; C1998-06-5260B-132
Doc Type: Journal Paper
Title: Segmentation-based hybrid coding using luminance
masking
Authors: Jiwu Huang*; Shi, Y.Q.
Affiliation:* Dept. of Electron. Eng., Shantou Univ., Guangdong,
China
Journal: Electronics Letters vol.34, no.8 p.750-1
Publisher: IEE
Date: 16 April 1998
Country of Publication: UK
ISSN: 0013-5194 CODEN: ELLEAK
SICI: 0013-5194(19980416)34:8L.750:SBHC;1-5
CCC: 0013-5194/98/$10.00
Language: English
Treatment: Theoretical or Mathematical, Experimental
Abstract: The authors propose a segmentation-based hybrid image coding
algorithm taking the features of the human visual system into account.
A novel segmentation criterion based on luminance masking is
presented. The image is segmented into blocks of different sizes and
different properties. Block mean, polynomial approximation and
discrete cosine transform coding are then applied to the blocks
accordingly. (7 Refs.)
Classification: B6140C (Optical information, image and video signal processing
); B6120B (Codes ); B0230 (Integral transforms ); B0290F (In
terpolation and function approximation ); B0290Z (Other numerical
methods ); C5260B (Computer vision and image processing techniqu
es ); C1130 (Integral transforms ); C1250 (Pattern recogniti
on ); C4190 (Other numerical methods ); C4130 (Interpolation
and function approximation )
Thesaurus: approximation theory; discrete cosine transforms; image coding; image
segmentation; polynomials; transform coding
Free Terms: segmentation-based hybrid coding; luminance masking; image coding
algorithm; segmentation criterion; block mean coding; polynomial
approximation coding; discrete cosine transform coding; DCT coding
INSPEC 5902437 B1998-06-6140C-225; C1998-06-5260B-131
Doc Type: Journal Paper
Title: Adaptive image watermarking scheme based on visual
masking
Authors: Jiwu Huang*; Shi, Y.Q.
Affiliation:* Dept. of Electron. Eng., Shantou Univ, Guangdong,
China
Journal: Electronics Letters vol.34, no.8 p.748-50
Publisher: IEE
Date: 16 April 1998
Country of Publication: UK
ISSN: 0013-5194 CODEN: ELLEAK
SICI: 0013-5194(19980416)34:8L.748:AIWS;1-5
CCC: 0013-5194/98/$10.00
Language: English
Treatment: Application, Theoretical or Mathematical,
Experimental
Abstract: An image watermarking scheme in a DCT domain is proposed. It is
adaptive in that a different strength of watermark is applied to
different blocks according to their block classification. For the
classification, visual masking (both luminance and texture masking) is
taken into account. Consequently, the watermarks thus generated are
robust and invisible. (3 Refs.)
Classification: B6140C (Optical information, image and video signal processing
); B0230 (Integral transforms ); B0290Z (Other numerical methods
0290Z); C5260B (Computer vision and image processing techniques )
; C1250 (Pattern recognition ); C1130 (Integral transforms );
C4190 (Other numerical methods )
Thesaurus: adaptive signal processing; brightness; copy protection; copyright;
discrete cosine transforms; image classification
Free Terms: adaptive image watermarking scheme; visual masking; DCT domain; block
classification; luminance masking; texture masking; digital media
copyright protection; watermark embedding
INSPEC 5895962 C1998-06-1290F-001
Doc Type: Journal Paper
Title: An efficient approach to the cell formation with
multiple machines for same machine type
Authors: Wu Naiqi*
Affiliation:* Dept. of Mechatronics Eng., Shantou Univ.,
Guangdong, China
Journal: Control Theory & Applications vol.14, no.6 p.891-6
Publisher: South China Univ. Technol
Date: Dec. 1997
Country of Publication: China
ISSN: 1000-8152 CODEN: KLYYEB
SICI: 1000-8152(199712)14:6L.891:EACF;1-P
Language: Chinese
Treatment: Theoretical or Mathematical
Abstract: In real manufacturing systems, often there are multiple machines of
the same machine types due to capacity requirements. But up to now,
existing algorithms can not model such cell formation problems, so the
result may be improper. In this paper, such a problem is well-modeled
by the presented network model, so an efficient approach to cell
formation is proposed. (9 Refs.)
Classification: C1290F (Systems theory applications in industry ); C1180
(Optimisation techniques ); C1160 (Combinatorial mathematics
)
Thesaurus: graph theory; minimisation; production control
Free Terms: cell formation; manufacturing systems; capacity requirements; network
mode
INSPEC 5884625 A1998-10-8760B-016
Doc Type: Journal Paper
Title: Bispectral analysis of heart sounds measured on the
surface of the chest
Authors: Minfen Shen*; Beadle, P.J.
Affiliation:* Dept. of Sci. Res., Shantou Univ., Guangdong, China
Journal: Acoustics Letters vol.20, no.7 p.146-51
Publisher: Parjon Inf. Services
Date: Jan. 1997
Country of Publication: UK
ISSN: 0140-1599 CODEN: ACLEDI
SICI: 0140-1599(199701)20:7L.146:BAHS;1-D
Language: English
Treatment: Practical
Abstract: Bispectral analysis is proposed to investigate nonlinear coupling
phenomena of heart sounds. A non-Gaussian AR model is selected for
parametric bispectral estimation in analysing several kinds of heart
sounds. Bispectral cross-correlation is employed to order
determination of the model. Real sounds are utilized to show that
different quadratic nonlinear interactions exist in both normal and
abnormal sounds. It was found that bispectral analysis has a high
immunity to background noise. It is expected that polyspectra may be
used as an effective and useful tool for understanding the basic heart
vibration mechanism and for improving the automated analysis of these
sounds. (3 Refs.)
Classification: A8760B (Sonic and ultrasonic radiation (medical uses) ); A4360
(Acoustic signal processing ); A8770E (Patient diagnostic methods
and instrumentation )
Thesaurus: acoustic signal processing; bioacoustics; cardiology; medical signal
processing; patient diagnosis
Free Terms: heart sounds; bispectral analysis; nonlinear coupling phenomena;
parametric bispectral estimation; quadratic nonlinear interactions;
background noise; polyspectra; heart vibration mechanism
? Copyright 1998, IEE
INSPEC 5851200 B1998-04-6140-122; C1998-04-1260-083
Doc Type: Journal Paper
Title: A nonlinear autoregressor predictor with the global
and unbiased solution
Authors: Dai Xianhua*; Huang Jiwu*
Affiliation:* Shantou Univ., Guangdong, China
Journal: Acta Electronica Sinica vol.25, no.12 p.96-9
Publisher: Chinese Inst. Electron
Date: Dec. 1997
Country of Publication: China
ISSN: 0372-2112 CODEN: TTHPAG
SICI: 0372-2112(199712)25:12L.96:NAPW;1-#
Language: Chinese
Treatment: Theoretical or Mathematical
Abstract: The object of this paper is to investigate the parameter estimation
of nonlinear autoregressor (NAR) predictor. From the view point of
adaptive infinite impulse response (IIR) filtering output error
algorithm, the NAR parameter estimation is investigated. With the help
of the time averaging convergence condition, a new parameter
estimation algorithm is presented, which converges to a globally
unbiased solution even if additive noise exists. (4 Refs.)
Classification: B6140 (Signal processing and detection ); B0240Z (Other topics
Page 14, 15 Apr 99
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in statistics ); C1260 (Information theory ); C1220 (Simulat
ion, modelling and identification ); C1140Z (Other topics in stati
stics )
Thesaurus: adaptive filters; autoregressive processes; convergence; filtering
theory; IIR filters; parameter estimation; prediction theory
Free Terms: nonlinear autoregressor predictor; globally unbiased solution;
adaptive IIR filtering output error algorithm; infinite impulse
response filtering; time averaging convergence condition; parameter
estimation algorithm; additive noise
INSPEC 5848684 B1998-04-6140C-206; C1998-04-1250-061
Doc Type: Conference Paper
Title: Smoothing of reconstructed images in block coding
Authors: Huang Jiwu*
Affiliation:* Al & PR Lab., Shantou Univ., Guangdong, China
Conf. Title: Proceedings of the Fourteenth International
Conference Applied Informatics
p.392-5
Editors: Hamza, M.H.
Publisher: IASTED-ACTA Press, Anaheim, CA
Date: 1996 459 pp.
Country of Publication: USA
ISBN: 0 88986 195 1
Language: English
Conf. Date: 20-22 Feb. 1996
Conf. Loc: Innsbruck, Austria
Conf. Sponsors: IASTED
Treatment: Theoretical or Mathematical
Abstract: Block coding plays a significant role in image data compression.
However, block coding usually produces blocking artifacts in the
reconstructed images. These kinds of noise result in artificial
contours in vision and so degrade the quality of decoded images. For
this reason, postprocessing is often used to reduce the blocking
artifacts for improving the quality of decoded images. 2D linear
filters are usually not applicable since they blur the edges and
details too much while removing artificial contours. To improve the
visual quality of reconstructed images, we must apply nonlinear
filtering techniques. We present an adaptive space-variant filter to
reduce blocking artifacts. First, we apply a 2D median filter on the
decoded image and estimate the image signals and noise. Second, the
neighborhood of each pixel (x,y) in the decoded image is analyzed
based on the local features of image and noise. All neighborhood
blocks are classified as three classes: edge blocks, coarse blocks,
and smooth blocks. Last, we use a 1D Gaussian directional filter, a 2D
improved mean filter, and a 2D median filter on the center pixel of
the blocks. Simulation results indicate that the algorithm has good
performance regarding decoded image quality. (0 Refs.)
Classification: B6140C (Optical information, image and video signal processing
); B6120B (Codes ); C1250 (Pattern recognition ); C1260 (Inf
ormation theory ); C5260B (Computer vision and image processing te
chniques )
Thesaurus: block codes; data compression; image coding; image reconstruction;
median filters; smoothing methods; two-dimensional digital filters
Free Terms: reconstructed image smoothing; block coding; image data compression;
artificial contours; quality; blocking artifacts; 2D linear filters;
nonlinear filtering techniques; adaptive space-variant filter; 2D
median filter; noise; pixel; edge blocks; coarse blocks; smooth
blocks; 1D Gaussian directional filter; 2D improved mean filter;
simulation; performance; image reconstruction
INSPEC 5848628 B1998-04-0290P-010; C1998-04-4170-016
Doc Type: Conference Paper
Title: On comparison theorems in nonlinear evolution
equation
Authors: Zhang, X.S.*
Affiliation:* Inst. of Math., Shantou Univ., Guangdong, China
Conf. Title: Differential Equations and Control Theory.
Proceedings of the International Conference
p.471-5
Editors: Deng, Z.; Liang, Z.; Lu, G.; Ruan, S.
Publisher: Marcel Dekker, New York, NY
Date: 1996 xvi+520 pp.
Country of Publication: USA
ISBN: 0 8247 9658 6
Language: English
Conf. Date: 1994
Conf. Loc: Wuhan, China
Treatment: Theoretical or Mathematical
Abstract: The nonlinear evolution equation mu (t)=T/sub t/ f+ integral /sup
t//sub 0/ T/sub t-s/ psi ( mu (t))ds has been studied by many authors.
In this paper we obtain two comparison theorems by using probabilistic
approach. (4 Refs.)
Classification: B0290P (Differential equations ); B0240Z (Other topics in
statistics ); B0290R (Integral equations ); C4170 (Differen
tial equations ); C4180 (Integral equations ); C1140Z (Other
topics in statistics )
Thesaurus: integral equations; Markov processes; partial differential equations;
probability
Free Terms: comparison theorems; nonlinear evolution equation; probability;
Markov processes; integral equation; partial differential equation
INSPEC 5842032 B1998-04-6140C-110; C1998-04-1250-033
Doc Type: Conference Paper
Title: Block coding based on a tree classifier
Authors: Huang Jiwu*; Zhang Lichen*
Affiliation:* Dept. of Electron. Eng., Shantou Univ., China
Conf. Title: Proceeding. 1997 IEEE International Symposium on
Information Theory (Cat. No.97CH36074)
p.258
Publisher: IEEE, New York, NY
Date: 1997 xxvi+542 pp.
Country of Publication: USA
ISBN: 0 7803 3956 8
CCC: 0 7803 3956 8/97/$10.00
Language: English
Conf. Date: 29 June-4 July 1997
Conf. Loc: Ulm, Germany
Conf. Sponsors: Information Theory Soc. IEEE
Treatment: Theoretical or Mathematical
Abstract: In this paper, we propose a block coding algorithm based on a binary
tree classifier combining the DCT coding and polynomial approximation.
The image is split into blocks. The blocks are classified and coded.
The experiment results shows that the proposed algorithm has much
better performance than JPEG. (0 Refs.)
Classification: B6140C (Optical information, image and video signal processing
); B6120B (Codes ); B0290F (Interpolation and function approximat
ion ); C1250 (Pattern recognition ); C1260 (Information theo
ry ); C4130 (Interpolation and function approximation )
Thesaurus: approximation theory; block codes; discrete cosine transforms; image
Page 16, 15 Apr 99
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classification; image coding; polynomials; transform coding
Free Terms: block coding; binary tree classifier; DCT coding; polynomial
approximation; performance; image
INSPEC 5813581 A1998-05-6855-027
Doc Type: Journal Paper
Title: Structural study of sputtered nanocrystalline Ti
and Zr by X-ray diffraction
Authors: Shi Wangzhou*; Yuo Ruohe*; Lin Kuixun*; Lin
Xuanying*
Affiliation:* Dept. of Phys., Shantou Univ., China
Journal: Chinese Science Bulletin vol.42, no.22 p.1880-3
Publisher: Science Press
Date: Nov. 1997
Country of Publication: China
ISSN: 1001-6538 CODEN: CSBUEF
SICI: 1001-6538(199711)42:22L.1880:SSSN;1-N
Language: English
Treatment: Experimental
Abstract: In this note, the study of the structure of nanocrystalline Ti and Zr
prepared by sputtering using the X-ray diffraction technique is
reported, and results show that nanocrystalline Ti and Zr prepared by
sputtering appear to be respectively BCC and omega -phase structures
under the conditions of room temperature and atmospheric pressure. (5
Refs.)
Classification: A6855 (Thin film growth, structure, and epitaxy ); A6480G
(Microstructure )
Thesaurus: nanostructured materials; sputtered coatings; titanium; X-ray
diffraction; zirconium
Free Terms: structural study; sputtered nanocrystalline material; X-ray
diffraction; BCC phase; omega-phase; room temperature; atmospheric
pressure; 293 K; Ti; Zr
Numerical Index: temperature 2.93E+02 K
Chemical Index: Ti/el; Zr/el
INSPEC 5809638 A1998-05-4340-001
Doc Type: Journal Paper
Title: Measurement of point moment mobility in the
presence of non-zero cross mobility
Authors: Su Jianxin*; Gibbs, B.M.
Affiliation:* Dept. of Phys., Shantou Univ., Guangdong, China
Journal: Applied Acoustics vol.54, no.1 p.9-26
Publisher: Elsevier
Date: May 1998
Country of Publication: UK
ISSN: 0003-682X CODEN: AACOBL
SICI: 0003-682X(199805)54:1L.9:MPMM;1-K
Publisher No: S0003-682X(97)00068-6
CCC: 0003-682X/98/$19.00+0.00
Language: English
Treatment: Experimental
Abstract: One of the main difficulties in measuring moment mobility is that of
generating a moment which is pure and of sufficient power. Measurement
systems have been proposed which consist of a pair of matched shakers,
a shaker-lever system or an actuator to a design by Petersson. All
have been used to directly measure moment mobility and results are
encouraging in conditions where the cross mobility is small or zero.
Otherwise there is a discrepancy between the measured and true
Page 17, 15 Apr 99
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mobility which is a function of the ratio between the unwanted
vertical force and applied moment and of the cross mobility at the
receiver point. This error is discussed theoretically and a correction
term introduced to enable point moment mobility to be measured
directly. (14 Refs.)
Classification: A4340 (Structural acoustics and vibration )
Thesaurus: structural acoustics; vibrations
Free Terms: point moment mobility; nonzero cross mobility; matched shakers;
shaker-lever system; unwanted vertical force
INSPEC 5800876 A1998-04-8760B-005; B1998-02-7510-018; C1998-02-7330-166
Doc Type: Conference Paper
Title: The analysis and classification of phonocardiogram
based on higher-order spectra
Authors: Minfen Shen*; Lisha Sun
Affiliation:* Dept. of Sci. Res., Shantou Univ., Guangdong, China
Conf. Title: Proceedings of the IEEE Signal Processing Workshop
on Higher-Order Statistics (Cat. No.97TB100151)
p.29-33
Publisher: IEEE Comput. Soc, Los Alamitos, CA
Date: 1997 xiii+471 pp.
Country of Publication: USA
ISBN: 0 8186 8005 9
CCC: 0 8186 8005 9/97/$10.00
Language: English
Conf. Date: 21-23 July 1997
Conf. Loc: Banff, Alta., Canada
Conf. Sponsors: IEEE Signal Process
Treatment: Theoretical or Mathematical
Abstract: This paper investigates the application of a non-Gaussian AR model
and parametric bispectral estimation in analyzing normal and
pathological heart sound signals. The non-Gaussian AR model of PCG
signals (phonocardiogram) is used to detect quadratic nonlinear
interactions and to classify the two patterns of phonocardiograms in
terms of the parametric bispectral estimate. The bispectral
cross-correlation is proposed for the order determination of the
model. Real PCG data are implemented to show that the quadratic
nonlinearity exists in both normal and clinical heart sounds. It was
found that parametric bispectral techniques are effective and useful
tools in analyzing PCG and other biomedical signals, such as EMG, ECG
and EEG. (15 Refs.)
Classification: A8760B (Sonic and ultrasonic radiation (medical uses) ); A8770E
(Patient diagnostic methods and instrumentation ); A0250 (Probabi
lity theory, stochastic processes, and statistics ); A4360 (Acoust
ic signal processing ); B7510 (Biomedical measurement and imaging
); B6140 (Signal processing and detection ); B0240Z (Other to
pics in statistics ); C7330 (Biology and medical computing )
; C5260 (Digital signal processing ); C1140Z (Other topics in stat
istics )
Thesaurus: acoustic signal processing; bioacoustics; cardiology; higher order
statistics; medical signal processing; parameter estimation; pattern
classification; spectral analysis
Free Terms: phonocardiogram; higher-order spectra; classification; nonGaussian AR
model; parametric bispectral estimation; heart sound signals; PCG
signals; quadratic nonlinear interactions; parametric bispectral
estimate; bispectral cross-correlation; order determination; quadratic
nonlinearity; biomedical signals; EMG; ECG; EEG
INSPEC 5800875 A1998-04-8760B-004; B1998-02-7510-017; C1998-02-7330-165
Doc Type: Conference Paper
Title: Time-varying third-order cumulant spectra and its
application to the analysis and diagnosis of
phonocardiogram
Authors: Minfen Shen*; Fenglin Shen
Affiliation:* Dept. of Sci. Res., Shantou Univ., Guangdong, China
Conf. Title: Proceedings of the IEEE Signal Processing Workshop
on Higher-Order Statistics (Cat. No.97TB100151)
p.24-8
Publisher: IEEE Comput. Soc, Los Alamitos, CA
Date: 1997 xiii+471 pp.
Country of Publication: USA
ISBN: 0 8186 8005 9
CCC: 0 8186 8005 9/97/$10.00
Language: English
Conf. Date: 21-23 July 1997
Conf. Loc: Banff, Alta., Canada
Conf. Sponsors: IEEE Signal Process
Treatment: Theoretical or Mathematical
Abstract: Time-varying third-order cumulant spectra for analyzing
phonocardiographic signals has been proposed as an effective tool to
detect and quantity the temporal quadratic nonlinear interactions. The
cumulant-based Wigner bispectra (CWB) are applied to investigate the
nonstationarity and non-Gaussianity of both actual normal and clinical
phonocardiograms. Significant time-varying bispectral structure is
found and discussed. It is expected to use the Wigner bispectra in the
understanding of the heart sound mechanism and the improvement of the
assistant diagnosis of some heart diseases. (12 Refs.)
Classification: A8760B (Sonic and ultrasonic radiation (medical uses) ); A4360
(Acoustic signal processing ); A8770E (Patient diagnostic methods
and instrumentation ); A0250 (Probability theory, stochastic proc
esses, and statistics ); B7510 (Biomedical measurement and imaging
); B6140 (Signal processing and detection ); B0240Z (Other t
opics in statistics ); C7330 (Biology and medical computing
); C1140Z (Other topics in statistics ); C5260 (Digital signal pr
ocessing )
Thesaurus: acoustic signal processing; bioacoustics; cardiology; higher order
statistics; medical signal processin; patient diagnosis; spectral
analysis; Wigner distribution
Free Terms: time-varying third-order cumulant spectra; phonocardiogram;
diagnosis; temporal quadratic nonlinear interactions; cumulant-based
Wigner bispectra; nonstationarity; nonGaussianity; normal
phonocardiograms; clinical phonocardiograms; time-varying bispectral
structure; heart sound; heart diseases
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