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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korea Society for Industrial and Applied Mathematics
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Journal DOI :
The Korean Society for Industrial and Applied Mathematics
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Volume & Issues
Volume 11, Issue 4 - Dec 2007
Volume 11, Issue 3 - Sep 2007
Volume 11, Issue 2 - Jun 2007
Volume 11, Issue 1 - Mar 2007
Selecting the target year
Comment on: "Hall and Ion-Slip effects on magneto-micropolar fluid with combined forced and free convection in boundary layer flow over a horizontal plate"
Mahmoud, Mostafa A.A. ;
Journal of the Korea Society for Industrial and Applied Mathematics, volume 11, issue 2, 2007, Pages 1~2
CODING THEOREMS ON A GENERALIZED INFORMATION MEASURES.
Baig, M.A.K. ; Dar, Rayees Ahmad ;
Journal of the Korea Society for Industrial and Applied Mathematics, volume 11, issue 2, 2007, Pages 3~8
In this paper a generalized parametric mean length
has been defined and bounds for
are obtained in terms of generalized R-norm information measure.
Signed degree sequences in signed 3-partite graphs
Pirzada, S. ; Dar, F.A. ;
Journal of the Korea Society for Industrial and Applied Mathematics, volume 11, issue 2, 2007, Pages 9~14
A signed 3-partite graph is a 3-partite graph in which each edge is assigned a positive or a negative sign. Let G(U, V, W) be a signed 3-partite graph with
. Then, signed degree of
is the number of positive edges incident with
is the number of negative edges incident with
. The sequences
are called the signed degree sequences of G(U, V, W). In this paper, we characterize the signed degree sequences of signed 3-partite graphs.
ON SOME MODELS LEADING TO QUASI-NEGATIVE-BINOMIAL DISTRIBUTION
Bilal, Sheikh ; Hassan, Anwar ;
Journal of the Korea Society for Industrial and Applied Mathematics, volume 11, issue 2, 2007, Pages 15~29
In this paper, we explore some interesting models of the quasi-negative-binomial distribution based on difference differential equations applicable to theory of microorganisms and the situations like that. Some characterizations based on conditional distributions and damage process have been obtained. Further, the distribution of number of accidents as the quasi-negative-binomial distribution in the light of Irwin's theory of ";proneness-liability"; model has been derived. Finally, the proposed model (QNBD) has been applied to study the Shunting accidents, home injuries, and strikes in industries.
TEACHING APPLIED MATHEMATICS FOR ENGINEERS - A NEW TEACHING PARADIGM BASED ON INDUSTRIAL MATHEMATICS
Taavitsainen, Veli-Matti ;
Journal of the Korea Society for Industrial and Applied Mathematics, volume 11, issue 2, 2007, Pages 31~40
What is the "new paradigm"? It is impossible express it in one or two words, but if one had to; the closest might be the "holistic approach". The expression can be justified by the fact that the conclusions above lead to a greater intermixing of mathematics with engineering and natural sciences subjects, typically expressed in the form of examples of simplified real problems. They also lead to a greater intermixing of subjects within mathematics so that the courses should have less separation e.g. between symbolic and numerical mathematics. The conclusions also lead to the spreading the mathematics courses throughout all study years, not just the first two years. Of course, this should be done with great care in order to guarantee studies that are logically linked together. The new paradigm also means that the needs arising from industrial mathematics must be taken into account in the contents of engineering mathematics courses. Such topics are e.g. multivariate methods, statistics and use of mathematical software. What are we expected to gain from the paradigm shift? The primary benefit should be in obtaining more productive engineers equipped with a better degree of mathematical preparedness for engineering problems. But in addition, it should also promote more intensive use of applied mathematics and easier communication with professional mathematicians, often needed in complicated industrial problems.?Finally, it can be noted that the new paradigm is in harmony with the basic ideas of the CDIO (Conceive - Design - Implement - Operate) initiative for producing the next generation of engineers . New ideas for engineering education can be found also in the homepage of SEFI (European Society for Engineering Education) .
FINE SEGMENTATION USING GEOMETRIC ATTRACTION-DRIVEN FLOW AND EDGE-REGIONS
Hahn, Joo-Young ; Lee, Chang-Ock ;
Journal of the Korea Society for Industrial and Applied Mathematics, volume 11, issue 2, 2007, Pages 41~47
A fine segmentation algorithm is proposed for extracting objects in an image, which have both weak boundaries and highly non-convex shapes. The image has simple background colors or simple object colors. Two concepts, geometric attraction-driven flow (GADF) and edge-regions are combined to detect boundaries of objects in a sub-pixel resolution. The main strategy to segment the boundaries is to construct initial curves close to objects by using edge-regions and then to make a curve evolution in GADF. Since the initial curves are close to objects regardless of shapes, highly non-convex shapes are easily detected and dependence on initial curves in boundary-based segmentation algorithms is naturally removed. Weak boundaries are also detected because the orientation of GADF is obtained regardless of the strength of boundaries. For a fine segmentation, we additionally propose a local region competition algorithm to detect perceptible boundaries which are used for the extraction of objects without visual loss of detailed shapes. We have successfully accomplished the fine segmentation of objects from images taken in the studio and aphids from images of soybean leaves.
DIRECTIONAL FILTER BANK-BASED FINGERPRINT IMAGE ENHANCEMENT USING RIDGE CURVATURE CLASSIFICATION
Lee, Joon-Jae ; Lee, Byung-Gook ; Park, Chul-Hyun ;
Journal of the Korea Society for Industrial and Applied Mathematics, volume 11, issue 2, 2007, Pages 49~57
In fingerprints, singular regions including core or delta points have different directional characteristics from non-singular regions. Generally, the ridges of singular regions change more abruptly than those of nonsingular areas, thus in order to effectively enhance fingerprint images regardless of region, local ridge curvature information needs to be used. In this paper, we present an improved Directional Filter Bank (DFB)-based fingerprint image enhancement method that effectively takes advantage of such ridge curvature information. The proposed method first decomposes a fingerprint image into 8 directional subbands using the DFB and then classifies the image into background, low curvature, and high curvature regions using the directional energy estimates calculated from the subbands. Thereafter, the weight values for directional subband processing are determined using classification information and directional energy estimates. Finally, the enhanced image is obtained by synthesizing the processed subbands. The experimental results show that the proposed approach is effective in enhancing both singular and non-singular regions.
THE PROCESS OF THE DEVELOPMENT OF HYPOXIA IN AN ABNORMAL BLOOD FLOW II
Kwak, Min-Kyu ; Go, Jae-Gwi ;
Journal of the Korea Society for Industrial and Applied Mathematics, volume 11, issue 2, 2007, Pages 59~66
The oxygen distribution at steady state is analyzed mathematically in a hexagonal cylinder. The domain is penetrated by parallel cylindrical capillaries of different oxygen squirt. Asymptotic solution is used to determine the effect of axial diffusion. Oxygen concentration profiles are displayed at some positions of capillary-beds. At the venous end some tissue areas suffer from a shortage of oxygen.
A STUDY OF BRAMBLE-HILBERT LEMMA AND ITS RELATION TO
Kuk, Seung-Woo ;
Journal of the Korea Society for Industrial and Applied Mathematics, volume 11, issue 2, 2007, Pages 67~77
This paper is concerned with the proof of so-called Bramble-Hilbert Lemma. We present that
inequality in  implies one of results of Morrey which is crucial in the proof. In this point of view, we recognize that removing the average term in
inequality fulfills a crucial role in the proof of Bramble-Hilbert Lemma. It is accomplished by adding some polynomial of degree one less than the degree of the Sobolev space in the outset. So, the condition annihilating the set of polynomials
of degree k - 1 is required necessarily in Bramble-Hilbert Lemma.