• 산업경영시스템학회지
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• 제29권1호
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• pp.143-150
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• 2006

Box-Cox model and T-factor method have been widely used to measure economic depreciations for industrial property. The Box-Cox model which combines economic efficiency with depreciation pattern is here extended to the reliability function. To do so a Rayleigh distribution which has been used to estimate the reliability of current assets was chosen as an efficiency curve of marginal productivity. Such an approach provides the possibility to classify the efficiency curves into four categories. It is also possible to analyze the types of depreciation curves. Therefore, the power family of a non-linear Box-Cox model could be set at certain constant values, then the model can be transformed into a linear model to estimate the economic depreciation rates by utilizing the reliability function. Estimating the resultant linear regression equation requires minimal number of observations, while at the same time facilitating the test of hypothesis on depreciation rates.

• East Asian mathematical journal
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• 제29권5호
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• pp.529-536
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• 2013

In this paper, we find the values and the number of occurrences of each value of the cross-correlation function $C_d({\tau})$ when $d=\frac{2^{k-1}}{2^s-1}(2^{k(i+1)}-2^{ki}+2^{s+1}-2^k-1)$, where n = 2k, s is an integer such that 2s divides k, and i is odd.

• 대한가정학회지
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• 제34권2호
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• pp.153-166
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• 1996

Mother's view and mediating behavior of paternal grandparents-grandchildren is explored by using data of 159 mothers who have children at teens. The analysis indicates as below. 1. Mothers highly except the roles of grandparents such as teaching values and family historians, role models for good life, influencing on the developing of self-identity of grandchildren. However mothers want grandparents keep distance from the lives of grandchildren. This may be double message to grandparents that they may find it uneasy to accomodate. 2. Grandchildren's role is expected very positively by mothers. 3. Mothers' mediating level of paternal grandparents-grandchildren relations is neutral and a little bit positive on the whole. Mothers' mediating behavior between grandfathers-grandchildren is associated with mothers' view on the importance of grandfathers in the lives of grandchildren and residence pattern. Mothers' mediating behavior between grandmothers-grandchildren is associated with mothers' view on the importance of grandmothers in the lives of grandchildren, grandchildren's role, the intimacy between mothers and grandmothers and residence pattern.

• 대한가정학회지
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• 제34권4호
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• pp.373-391
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• 1996

The purpose of this study is to develope Premarital Relationship Enrichment Program (PREP). This Program was based on survey (416 data used) for the need of PREP. The results was as followings : 1. The object wanted that the curriclumn were included marital values, love and intimacy, communication skill, understanding of personality, good relationship of both parents, adaptation of both families, healthy self-image, sex knowlege, constructive conflict-solving, financial management skill, reasonable decision-making, family planning, marital roles, concrete marriage readiness. 2. They surgested that variety of methods and proposals. 3. So, this program were designed that (1) Belongness and autonomy (2) Marriage and value (3) Sex knowledge (4) Communication skill (5) Sex role and our future

• 한국간호교육학회지
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• 제17권2호
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• pp.178-189
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• 2011

Purpose: The purpose of this study was to analyze types of undergraduate nursing student's perception toward happiness. Method: The Q-methodology, which provides a method of analyzing the subjectivity of each item, was used. The 34 selected Q-statements from each of 41 subjects were classified into a shape of normal distribution using a 9 point scale. The collected data was analyzed using a QUANL PC program. Result: Four types of perception of happiness in Korean undergraduate nursing students were identified. Type I is a family support vs. emotion type, Type II is a self satisfaction vs. perception type, Type III is a relation oriented vs. action type, and Type IV is a self regulation vs. belief type. Conclusion: It can be concluded that obtaining happiness by pursuing a satisfactory life through creation of values can play an important role in happiness. Therefore, the results of this study suggest that the concept of happiness might be included in nursing curriculum.

• 한국주거학회논문집
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• 제9권2호
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• pp.97-103
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• 1998

The purpose of this study is to scrutinize the change of Korean dwelling space terms, and confirm the value of literature as data for a study on dwelling space terms. The terms, which describe the dwelling space, were selected in 63 Korean literature. The terms about rooms, working spaces, space for physiology and hygienic, and storage spaces, were analyzed. The terms about rooms were classified by a constituent unit of traditional housing, location, size, function, and so on. Among them, the number of terms about function had increased more and more. These terms were changed by housing size, housing form, structure of house and household, family size, and so on. It was confirmed that literatures have utility values for a study on change of dwelling space terms. In next study, it is required to analyze the meaning and usage of Korean dwelling space terms, and to compare terms in floorplans with terms in literature.

• 제어로봇시스템학회논문지
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• 제13권12호
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• pp.1160-1166
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• 2007

This paper presents the design and implementation of an embedded image stabilization control system for a mobile phone with a built-in camera. Image stabilization is a family of techniques for reducing image blur resulting from minute camera shake due to hand-held shooting, thereby allowing the use of shutter speeds slower than values normally required to obtain sharp images. A mechanical image stabilizer mechanism developed for a camera mobile phone is introduced and a digital control system as a part of the image stabilization system is designed and implemented on an 8-bit microcontroller with integer arithmetic in C. This paper focuses primarily on issues that need to be taken into consideration for fixed-point implementation of the digital controller. Several experimental results are presented to demonstrate the performance of the implemented image stabilization control system.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2005년도 추계학술대회 논문집
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• pp.51-56
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• 2005

The purpose of this study was to examine the needs of apartment residents for community programs by generations. For this study, the data from the focus group interview(35 participants) and the questionnaire survey(186 participants) were analyzed. The major results were as follows; 1) The residents in different generations had different characteristics and life values. Y generation showed higher value in Technology/Consumption/Individual than other generations. BB generation had higher value both in Health/Property/Family and Prudence/Reality. G generation scored a higher level in Tradition/Conservatism. 2) The residents in all generations showed a high level in needs of community programs and especially higher rates in needs of communication programs items. However, there were gaps in program needs among different generations. Therefore, the community programs should be specialized provided by considering unique needs of different generations.

• 한국식품조리과학회지
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• 제13권3호
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• pp.338-347
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• 1997

The acceptance and dining behavior of Taegu residents for western foods were surveyed through the questionnaire to provide basic information for the diet improvement. The results were as follows: 1. The preliminary test showed that 19 western foods had high preference among them in the order of ice cream, fried chicken, fried potato, coffee, salad, pizza, soup, pork cutlet, hamburger sandwich, hamburger steak, potato croquette, curry rice, omelet rice, beef steak, spaghetti, com flakes, hashed rice, and omelet. Although a diversity was observed depending upon the age groups, the persons in their thirties generally had high preference on most western foods. 2. The recognition types of housewives to the western food were grouped into the merits of meal, disadvantages of meal, nutritive values, and cooking convenience. In order to have western food, 54.5% of the respondents went to restaurants, mainly family restaurant, however, the level of frequency was very low.

• Entomological Research
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• 제48권6호
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• pp.514-521
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• 2018

Drosophila melanogaster Meigen and Drosophila suzukii Matsumura are taxonomically close Drosophila species belonging to the family Drosophilidae and melanogaster group. D. melanogaster is thought to be evolutionarily adapted to overripe, decaying, and fermented fruits, in which large amounts of chemicals such as ethanol, acetic acid, and 2-phenylethanol are produced, whereas, D. suzukii is attracted to fresh ripening fruit. Considering the distinct habitats of the two flies, D. suzukii is hypothesized to exhibit higher susceptibility to these chemicals than D. melanogaster. Therefore, in this study, we investigated the survival rate of the flies at various concentrations of three chemicals (2-phenlyethanol, acetic acid, and ethanol) and calculated the lethal concentration (LC) values to compare the tolerance and susceptibility of D. melanogaster and D. suzukii to the chemicals. Our results revealed that D. melanogaster exhibited higher tolerance than D. suzukii to all chemicals, supporting the hypothesis of different evolutionary adaptations to distinct habitats of the two flies.