• Journal of the Korean Society for Industrial and Applied Mathematics
• /
• 제3권2호
• /
• pp.1-4
• /
• 1999

The Helmholtz equation is very important in physics and engineering. However, solution of the Helmholtz equation is in general known as a very difficult phenomenon. For if the ${\omega}$ is negative, the FDM discretized linear system becomes indefinite, whose solution by iterative method requires a very clever preconditioner. In this paper we assume that ${\omega}$ is nonnegative, and determine the optimal ${\rho}$ parameter for the three dimensional ADI iteration for the Helmholtz equation. The ADI(Alternating Direction Implicit) method is also getting new attentions due to the fact that it is very suitable to the vector/parallel computers, for example, as a preconditioner to the Krylov subspace methods. However, classical ADI was developed for two dimensions, and for three dimensions it is known that its convergence behaviour is quite different from that in two dimensions. So far, in three dimensions the so-called Douglas-Rachford form of ADI was developed. It is known to converge for a relatively wide range of ${\rho}$ values but its convergence is very slow. In this paper we determine the necessary conditions of the ${\rho}$ parameter for the convergence and optimal ${\rho}$ for the three dimensional ADI iteration of the Peaceman-Rachford form for the real Helmholtz equation with nonnegative ${\omega}$. Also, we conducted some experiments which is in close agreement with our theory. This straightforward extension of Peaceman-rachford ADI into three dimensions will be useful as an iterative solver itself or as a preconditioner to the the Krylov subspace methods, such as CG(Conjugate Gradient) method or GMRES(m).

• 한국의류학회지
• /
• 제24권3호
• /
• pp.323-334
• /
• 2000

The purpose of this study was to develop service quality dimensions for fashion retail stores and to identify significant service quality dimensions influencing customers satisfaction for each fashion retail store. 687 young adults completed written questionnaires consisting of items related to service quality. For analysis of data, confirmatory factor analysis, one-way ANOVA, scheffe test, and stepwise regression analysis were applied. The results were as follows: 1. The service quality dimensions of fashion retail stores were tangibles, reliability, responsiveness, assurance, empathy, fashionability and variety, price, convenience, merchandise quality and credit card usability. Among those 10 main dimensions of service quality were grouped as experience attributes and search attributes. 2. In examination of the highest valuable service quality dimension based on the types of stores, imported fashion stores were evaluated the highest in terms of all factors except price, tangibles and credit card usability. 3. To predict consumer satisfaction, service quality dimensions such as reliability, responsiveness, assurance, empathy, fashionability/variety, price, convenience, merchandise quality and credit card usability should be considered.

• 한국감성과학회:학술대회논문집
• /
• 한국감성과학회 2003년도 추계학술대회 논문집
• /
• pp.1251-1258
• /
• 2003

This paper is a study on the pedal placement and driving position of forklift according to the various body dimensions. Comfortable driving position were measured angles of joint(ankle, knee, hip) by Goniometer. From SIP(seat index point) to basis of pedals were measured about X and Y axises. In addition, Z axises were gauged between floor and pedals. In this paper, The 27 male subjects with no experience in driving forklift were measured in the test in order to exclusion of learning effect. Therefore the subjects have a preference for pedal location to the body dimensions, if as long as their body dimensions was very long, they would required each pedal's location of Y axis to increase. However, driving position is no influence. The pedal location of X and Z axises weren't related with various body dimensions and subjects have symmetrical location to the pedals of inching and break and hight of brake pedal is lower than the others. They hope that brake pedal is lower than others.

• 패션비즈니스
• /
• 제11권5호
• /
• pp.64-78
• /
• 2007

The main findings are as follows: First, both male and female group, image display was showed higher scores than the product display in the dimensions of 'interest' and 'impression, and the product display presented higher scores than the image display in the dimensions of 'information'. Second, in the dimensions of 'interest', more interest was demonstrated in image display for both male and female consumer group irrelevant to clothing shopping values. The pleasure pursuit consumer group of male and female presented more interest toward the both types of window display. Third, in the dimensions of 'information', the product display had more effect for both sex groups and the pleasure pursuit consumer group was seeking more information than the others groups through the window display. Fourth, in the dimensions of 'impression', the image display formed stronger impression and image for both male and female consumer group and the pleasure pursuit group showed higher score of impression formation than the other two groups.

• 유통과학연구
• /
• 제17권2호
• /
• pp.25-34
• /
• 2019

Purpose - This research strives to analyze and investigate customers' perception of the dimensions of service quality at retails in Makassar Municipality of Indonesia Country. This research tries to present its results empirically, which might be helpful to prepare a strategy to improve the service quality at retail companies. Research design, data, and methodology - The research uses Parasuraman's in 1985 unmodified SERVQUAL approach. This research is conducted using a questionnaire by purposive random sampling with 150 housewives customers who are met while they are shopping. The object of the study included several retail companies such as Alfa Mart, Alfa Midi, and Indomart operating in Makassar, Indonesia, which has been serving in 2017. Analysis was conducted by quantitative descriptive analysis, measurement of variable dimensions on the questionnaire using a Likert scale, and using cartecius graph and quadrant graphs to determine the gap size of each variable. Result - This research finds that the tangible and empathy dimensions such as product layout and lighting condition should be prioritized, and the empathy dimension whose gap value is too prominent such us peak load time condition and problem-solving adjustment. Conclusion - The second priority is responsiveness dimensions, and the last priority is reliability and assurance dimensions.

• 보건교육건강증진학회지
• /
• 제29권5호
• /
• pp.77-88
• /
• 2012

Objectives: This paper aims to identify the dimensions of community capacity in a public residence lease apartment complex in Seoul as a case study, and discusses their application to community health promotion. Methods: The research team performed a focus group interview and a brief survey with resident committee representatives to explore community context and to identify the dimensions of community capacity and their order of priority. Results: We identified many groups with different senses of community and various dynamics in the community. Seven dimensions of community capacity were identified. However, there are different developmental stages among them. Also there are some influences with the different directions in a dimension, e.g. leadership and citizen participation. Conclusions: This study illustrated the identification of the dimensions of community capacity focused on the perspective and recognition of the community and community member, as an effort to understand community capacity in domestic community health promotion context.

• 복식
• /
• 제62권4호
• /
• pp.181-194
• /
• 2012

The purpose of this study is to examine the attributes and internal structure of fashion brand authenticity, a new concept of brand association. For qualitative research, a total of 22 samples of consumers and professional groups were selected to implement in-depth interviews and focus group interviews. The results of this study were as follows: 1) the authenticity of fashion brand included various sub-dimensions. Attributes that constituted the authenticity of fashion brand, consisted of these following 8 dimensions: heritage, authority, relationship to place, consistency, non-popularity, trend-leading, originality and sustainability. 2) sub-dimensions of the fashion brand authenticity were once again categorized into core attributes and promoted attributes. Dimensions such as heritage, authority, relationship to place, consistency and non-popularity dimensions were inherent attributes of the brand, formed at a comparatively long time. Subsequently, these were categorized as core attributes of the authenticity of fashion brand. The trend-leading, originality and sustainability can form in a relatively short period of time by accepting the change, so it was categorized as promoted attributes which were created at the front stage with the consumers.

• 한국의류산업학회지
• /
• 제16권2호
• /
• pp.266-274
• /
• 2014

Parametric bodies reproduce the actual shape of human body parts and should be convenient for general users to change size to judge the visual fit of clothes on-line. In this study, three parametric bodies(i.e. I, C, D ) were compared to verify the accuracy of the provided body dimensions and reproducibility to a target model. To compare reproducibility, the 20s female standard virtual model developed for an apparel industry by Korean agency for technology and standards is used. The investigation of existing parameters showed that the numbers and kinds of parameters provided by each program were different with some errors in notation; in addition, some of virtual body dimensions went beyond the maximum allowable error. The result of changing each parametric body to the 20s female standard body showed that D, C, I in order produced better reproducibility for body dimensions. There were different levels of protrusion and concavity in the virtual cross sections and virtual longitudinal sections despite the small differences in body dimensions and cross sectional areas; in addition, some parametric body was not bilateral symmetry. The results of this study can be used as basic information in the standardization of a virtual model used in a virtual garment program.

• 인지과학
• /
• 제16권3호
• /
• pp.199-211
• /
• 2005

사람들이 무엇을 왜 두려워하는지를 알고자 대학생, 과학기술 분야의 전문가, 그리고 환경단체에 근무하는 직원들을 대상으로 30 개 항목들에 대한 위험을 평가하도록 하였다. Slovic과 그 동료들(1978, 1984, 1987)이 밝혔던 두려움과 지식의 두 위험지각 차원을 검토하면서 생태학적 태도가 다른 세 사회 집단 간의 위험 지각의 차이를 살펴보고자 하였다. 본 연구는 Slovic 등이 발견하였던 것과 동일한 두 심리적 차원을 찾아내었다. 지각된 위험 강도와 사회적 이익을 비롯한 여러 심리적 특성들에서 그 생태학적 태도가 차이 있을 것으로 생각되는 세 사회 집단이 뚜렷한 차이를 보였다. 본 연구의 결과를 Slovic 등의 결과와 비교하였고, 원자력 등과 관련해서 집단들 간의 차이와 그 결과를 논의하였다.

• 한국IT서비스학회지
• /
• 제13권3호
• /
• pp.333-342
• /
• 2014

As for the dimensions of service quality, reliability, responsiveness, assurance, empathy, and tangibles are the main factors that determine the company's service quality. To improve quality of service, companies emphasize the balance among the dimensions of service quality. These emphases improve definitely customer satisfaction and intention of reusing service, while communication at customer encounters give direct affects in customer satisfaction and intention of reusing service. This study shows how communications at customer encounters affect intention of reusing service and be affected by the dimensions of service quality. It especially analyzes how IT-based communications, one of physical one, such as phones, emails, messengers, and SNSs affect and be affected. In addition, it analyzes car repair service. This research uses a factor of communications at service encounter as for intermediate parameter and analyzes how it relates to dimensions of service quality and intention of reusing service. With following research model, it will analyze how IT-based communication affects intention of reusing service and be also affected by dimensions of service quality.