• Journal of the Korea Fashion and Costume Design Association
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• v.2 no.1
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• pp.123-132
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• 2000

All people think that their apparence which may be evaluated by someone is a very important thing. Especially, this trend is more important to women. The objective of this study is to compare and analyze the data of ideal and real body size which are obtained from female university students. Also, in order to find the difference of view of point between men and women, some data are obtained from male university students. The data are collected by the five typical parts on body such as height, weight, circumferences of chest, waist, and buttock. the samples for this study are randomly chosen from the universities in Seoul and Kangnung during three months (1999. 9~1999. 11). According to many researches, there is a strong relationship between cloth and appearance. The result of this study will play an important role not only for clothing psychology but also clothing marketing.

• Journal of the Korean Mathematical Society
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• v.31 no.3
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• pp.467-475
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• 1994

In 1983 Harmand and Lima [5] proved that if X is a Banach space for which K(X), the space of compact linear operators on X, is an M-ideal in L(X), the space of bounded linear operators on X, then it has the metric compact approximation property. A strong converse of the above result holds if X is a closed subspace of either $\elll_p(1 < p < \infty) or c_0 [2,15]$. In 1979 J. Johnson [7] actually proved that if X is a Banach space with the metric compact approximation property, then the annihilator K(X)^\bot$ of K(X) in $L(X)^*$ is the kernel of a norm-one projection in $L(X)^*$, which is the case if K(X) is an M-ideal in L(X).

• Bulletin of the Korean Mathematical Society
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• v.31 no.1
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• pp.35-44
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• 1994

In this paper we study exponential growth of Betti numbers over artinian local rings. By the Change of Tor Formula the results in the paper extend to the asymptotic behavior of Betti numbers over Cohen-Macaulay local rings. Using the length function of an artinian ring we calculate an upper bound for the number of generators of modules, this is then used to maximize the number of generators of sygyzy modules. Finally, applying a filtration of an ideal, which we call a Loewy series of an ideal, we derive an invariant B(R) of an artinian local ring R, such that if B(R)>1, then the sequence $b^{R}$$_{i}$ (M) of Betti numbers is strictly increasing and has strong exponential growth for any finitely generated non-free R-module M (Theorem 2.7).).

• Journal of applied mathematics & informatics
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• v.19 no.1_2
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• pp.551-572
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• 2005

Recently, there are some empirical Bayes procedures using NA samples. We point out a key equality which may not hold for NA samples. Thus, the results of those empirical Bayes procedures based on NA samples are dubious

• Bulletin of the Korean Mathematical Society
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• v.30 no.2
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• pp.193-199
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• 1993

A hereditary $C^{*}$-subalgebra B of a $C^{*}$-algebra A is said to be full if B is not contained in any proper closed two-sided ideal in A, so each hereditary $C^{*}$-subalgebra of a simple $C^{*}$-algebra is always full. It is well known that every $C^{*}$-algebra is strong Morita equivalent to its full hereditary $C^{*}$-subalgebra, but the strong Morita equivalence of a $C^{*}$-algebra A and its hereditary $C^{*}$-subalgebra B does not imply the fullness of B, ingeneral. We present the following lemma for our computational convenience in the course of the proof of the main theorem. Note that $L_{B}$, $L_{B}$$^{*}$ and $L_{B}$ $L_{B}$$^{*}$ are all .alpha.-invariant whenever B is .alpha.-invariant under the action .alpha. of G.a. of G.a. of G.a. of G.f G.

• Kyungpook Mathematical Journal
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• v.56 no.4
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• pp.1103-1113
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• 2016

In this paper, we study a directed simple graph ${\Gamma}_S(N)$ for a near-ring N, where the set $V^*(N)$ of vertices is the set of all left N-subsets of N with nonzero left annihilators and for any two distinct vertices $I,J{\in}V^*(N)$, I is adjacent to J if and only if IJ = 0. Here, we deal with the diameter, girth and coloring of the graph ${\Gamma}_S(N)$. Moreover, we prove a sufficient condition for occurrence of a regular element of the near-ring N in the left annihilator of some vertex in the strong zero-divisor graph ${\Gamma}_S(N)$.

• Honam Mathematical Journal
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• v.41 no.3
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• pp.581-593
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• 2019

The notions of (${\in}$, ${\in}{\vee}q$)-permeable S-value and (${\in}$, ${\in}{\vee}q$)-permeable I-value are introduced, and related properties are investigated. Relations among (${\in}$, ${\in}{\vee}q$)-fuzzy subalgebra, (${\in}$, ${\in}{\vee}q$)-fuzzy ideal, (strong) lower and (strong) upper level sets, (${\in}$, ${\in}{\vee}q$)-permeable S-value, (${\in}$, ${\in}{\vee}q$)-permeable I-value, S-energetic set, I-energetic set, right stable set and right vanished set are discussed.

• Journal of the Korean Home Economics Association
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• v.43 no.9 s.211
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• pp.27-40
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• 2005

The purpose of this study was to examine the relationship between male consumers' clothing shopping orientation and sex role identity. Since shopping, especially clothing shopping has been traditionally considered a female job, it was expected that male consumers' sex role identity would influence how they approach the task of clothing shopping. Data were collected through an Internet survey firm from men aged between 20 and 40 years(N=199). The major results are as follows: 1. Based on the six clothing shopping orientation factors identified tv factor analysis, the respondents were categorized into 5 distinct groups: Self-Directed Shoppers, Planners, Brand-Oriented Shoppers, Convenience Shoppers, and Impulsive High-Involvers. 2. Five sex role factors were identified by factor analysis: two masculinity factors (strong and reticent) and three femininity factors(gentle, meticulous, and affable). Among these factors, 'gentle' was considered the most ideal, followed in order by 'strong,' 'meticdous,' 'affable,' and 'reticent.' 3. The results of MANOVA showed that the clothing shopping orientation groups statistically differed in their perceived sex role identity as well as in their ideal sex role identity. Overall, Self-Directed Shoppers and Impulsive High-Involvers scored higher in both perceived masculinity and femininity than the other groups. Convenience Shoppers and Planners were high in femininity but low in masculinity. The Brand-Oriented Shoppers were low in both masculinity and femininity. The results indicate that Korean males who are in their 20s and 30s consider androgyny as a desirable state. In addition, those who are high in androgyny are more likely to be highly involved in clothing shopping.

• Korean Journal of Materials Research
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• v.22 no.9
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• pp.450-453
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• 2012

In crystalline solar cells, the substrate itself constitutes a large portion of the fabrication cost as it is derived from semiconductor ingots grown in costly high temperature processes. Thinner wafer substrates allow some cost saving as more wafers can be sliced from a given ingot, although technological limitations in slicing or sawing of wafers off an ingot, as well as the physical strength of the sliced wafers, put a lower limit on the substrate thickness. Complementary to these economical and techno-physical points of view, a device operation point of view of the substrate thickness would be useful. With this in mind, BC-BJ Si and GaAs solar cells are compared one to one by means of the Medici device simulation, with a particular emphasis on the substrate thickness. Under ideal conditions of 0.6 ${\mu}m$ photons entering the 10 ${\mu}m$-wide BC-BJ solar cells at the normal incident angle (${\theta}=90^{\circ}$), GaAs is about 2.3 times more efficient than Si in terms of peak cell power output: 42.3 $mW{\cdot}cm^{-2}$ vs. 18.2 $mW{\cdot}cm^{-2}$. This strong performance of GaAs, though only under ideal conditions, gives a strong indication that this material could stand competitively against Si, despite its known high material and process costs. Within the limitation of the minority carrier recombination lifetime value of $5{\times}10^{-5}$ sec used in the device simulation, the solar cell power is known to be only weakly dependent on the substrate thickness, particularly under about 100 ${\mu}m$, for both Si and GaAs. Though the optimum substrate thickness is about 100 ${\mu}m$ or less, the reduction in the power output is less than 10% from the peak values even when the substrate thickness is increased to 190 ${\mu}m$. Thus, for crystalline Si and GaAs with a relatively long recombination lifetime, extra efforts to be spent on thinning the substrate should be weighed against the expected actual gain in the solar cell output power.

• Fashion & Textile Research Journal
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• v.3 no.5
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• pp.423-436
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• 2001

The present study focused on the color of clothing for elderly Korean women, from the viewpoint of helping elderly people live more interesting lives with regard to their clothing, considering that the Korean society will become elderly-oriented in the near future. We took photographs of the elderly served as the models, displayed them on a computer screen, and produced 75 colors of the clothing in the elderly using computer graphics. The 75 colors were evaluated by 2 groups, one of elderly Korean woman group and a group of female students. We compared the ideal colors for and the colors actually worn by elderly people. The evaluation of the clothing colors for elderly women differed between the elderly woman group and the female student group. Analysis of images of the clothing colors selected by the elderly women showed that they attach importance to elegance when selecting clothing colors and have a strong desire to become active. The images held by female students concerning ideal clothing colors for elderly women closely pertained to commonness and inactivity.