• 한국전산유체공학회지
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• 제21권3호
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• pp.39-47
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• 2016

We conducted a multi-stage optimization to secure the desired performance of a centrifugal fan for home appliance in an early stage of product development. In optimization, the static pressure at the outlet of the fan is chosen as an objective function that is to be maximized, providing the required flow rate at the operating point of the fan. The optimization procedure begins with parameters for an initial baseline fan design. The baseline design is optimized by using a commercial optimization package. Accordingly, the corresponding blade models with a set of geometrical parameters are generated. Flow through a fan is simulated by solving the Reynolds-averaged Navier-Stokes equations. A multi-stage optimization scheme is employed to determine the family of optimum values for the parameters, leading to the pressure increase at the outlet of the fan. To validate the numerically obtained optimal design parameters, we fabricated the three types of fans using rapid prototyping and assessed the performance using a fan tester. Experimental results show that the design parameters at each stage satisfy the goal of optimization. The multi-stage optimization process turned out to be a useful tool in the development of a centrifugal fan.

• 한국의류산업학회지
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• 제20권4호
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• pp.379-388
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• 2018

The Hawaiian shirt, also known as the Aloha shirt, is a short-sleeved, colorful shirt with traditional Polynesian designs (e.g., hibiscus, fish) originating in Hawai'i. The shirt was selected for study because it is a unique garment that originated in the Hawaiian Islands in the late $19^{th}$ and $20^{th}$ centuries and marketed as a tourist product but was eventually adopted as appropriate residential clothing by the $mid-20^{th}$ century, however with different aesthetic details. Today, it is assumed by Hawaiian Island residents that tourists demonstrate poor taste when selecting a Hawaiian shirt. The purposes of this study are to examine the validity of the assumption that tourist taste and resident taste in Hawaiian shirts are different and to investigate the current Hawaiian shirt market change. For this study, 555 questionnaires were obtained from tourists and residents, and 10 Hawaiian shirt retailers/wholesalers participated in in-depth interviews. The results indicated that differences do exist between tourists' and residents' preferences for print designs and colorway. The market change of Hawaiian shirts was also recognizable in that an increasing number of tourists select Hawaiian shirts similar to resident customers, as part of their routine lives rather than as holiday or vacation garments. Other differences in Hawaiian shirt shopping behavior included the findings that tourists consider fabrication less important than resident customers who consider fabrication more (i.e., cotton 100%). By using both quantitative and qualitative methods, this study contributes to the fashion design and marketing field as well as help manufacturers and retailers with their merchandise and distribution plans.

• BMB Reports
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• 제29권5호
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• pp.448-454
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• 1996

Bacteriophage ${\phi}FC1$ is a temperate phage which was identified as a prophage in the Enterococcus faecalis KBL703 chromosome. Phage ${\phi}FC1$ integrates into the host chromosome by site-specific recombination. The phage attachment site P (attP) was localized within the 0.65-kb XhoI-HindIII fragment and the nucleotide sequence of the region was determined. An open reading frame (mj1) which adjoined the phage attachment site encoded a deduced protein related to the site-specific recombinase family. The organization of this region was comparable to other site-specific recombination systems. The molecular weight of the expressed MJ1 in E. coli was in good agreement with the predicted 53,537 Da of the mj1 gene product. Elucidation of the phage-specific integration process in this study would provide useful genetic tools such as a chromosomal integration system.

• Human Ecology Research
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• 제54권5호
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• pp.529-539
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• 2016

This study confirmed shopping behavior of Korean young overseas tourists and its effect on travel evaluation. I first identified core factors of travel activity preference, travel shopping propensity, and shopping products. The effect of shopping product satisfaction on tour satisfaction and post-tour intention was then investigated. Based on travel activities, tourists were grouped, and their characteristics were compared. An online survey method was performed to obtain data of 20's-30's Korean unmarried people, while factor analysis, regression analysis, chi-square test, analysis of variance (ANOVA), and cluster analysis were applied to analyze data. The results were as follows. First, six travel activities (city life, art/shopping, cultural experience, entertainment, field experience, and friendship), three shopping propensity (novelty/uniqueness, utility, and prestige), and four product groups (fashion goods, household goods, crafts, and foods) were found by factor analyses. Second, travel activity tended to influence shopping propensity, which then influenced shopping products preference. All factors of travel activity seemed to affect the three travel shopping propensities. Third, shopping satisfaction was shown to affect tour satisfaction, and posttour behavior. Finally, four tourist groups (active, social, pleasure, and passive) differed in terms of preferred tour activities, shopping propensity, and tour behavior. Active tourists rated the highest scores and passive ones rated the lowest for most evaluations.

• Asian Journal of Business Environment
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• 제5권4호
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• pp.5-11
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• 2015

Purpose - The purpose of this research is to identify how idiocentric consumers and allocentric consumers respond to retail store environments and how such responses affect their consumer behaviors in a sustainable consumption setting. Method - Data were collected from 422 U.S. adult consumers via a web-based survey. Two store settings were created, perceptually related (eco-friendly clothing displayed with greenery)or perceptually-unrelated (eco-friendly clothing displayed without greenery), and consumers were asked to take the survey based on the given store setting. Results - Allocentric consumers perceived a product and its display environment were related whereas idiocentric consumers perceived the two were unrelated. Also, the former exhibited higher purchase intentions when the product and store environment were related (eco-friendly clothing displayed with greenery), but the latter did when the two were unrelated (eco-friendly clothing displayed without greenery). Conclusions - This research suggests that retailers should consider consumer self-concept at personal-level when implementing marketing strategies. This research also demonstrates that consumers are influenced by store environment in relation to their self-concept and that self-concept can be temporarily modified by various stimuli such as visual displays.

• 디자인융복합연구
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• 제18권1호
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• pp.49-60
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• 2019

이 연구는 고령화 사회 및 개인핵가족사회에 진입하는 우리나라의 현 상황에서 가정편의식 제품을 편리하게 사용할 수 있는 디자인에 대하여 알아보고자 한다. 연구방법으로 첫째, 가정편의식 이론적 고찰로서 문헌자료 및 선행연구조사를 하였다. 둘째, 디자인 조사로서 가정편의식 디자인 사례 분류를 하였다. 셋째, 실제 사용하는 이용자를 대상으로 사용자 평가 및 감성평가 조사를 실시하였다. 제품 디자인 감성평가에 의한 요인분석 결과 3개의 대표 요인으로 분류되어졌다. 1요인은 "형태적 감성", 2요인은 "기능적 감성", 3요인은 "심리적 감성"으로 연구자에 의한 대표 감성언어 명칭을 3가지로 부여하였다. 가정편의식 패키지 디자인으로 다음과 같이 제작되어져야할 것이다. 첫째, 용기를 들때 대부분 비닐용기로 되어져있어 미끄러지고 떨어뜨리기 쉽기 때문에 용기에 그립감을 주어 잘 떨어뜨리지 않게 한다. 둘째, 손목이나 손가락 힘이 약한 고령자를 위하여 쉽게 뜯을 수 있게 제작 한다. 또한, 색상과 관련하여 차가운 한색계열 색상보다는 따뜻한 난색 계열색상을 이용하여 제공한다.

• 소성∙가공
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• 제15권9호
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• pp.641-647
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• 2006

During the injection molding process an excessive packing can occur in the smaller volume cavity because of volumetric difference of the family-mold. It causes warpage by increased residual stress in the product and flesh by over packing. In this study, we used a variable-runner system for the filling balance of the cavities by changing the cross-sectional area of a runner, and confirmed the filling imbalance by temperature and pressure sensors. We carried out experiments to examine the influence of types of resins such as LDPE/ABS/PA6,6 on the filling balancing of the system, in order to help mold designers, who can easily adopt the variable-runner system to their design. We also examined filling imbalance in the system with CAE analysis.

• 한국의류학회지
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• 제33권3호
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• pp.355-365
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• 2009

The purpose of this study was to investigate the effects of cognitive age on service quality, consumer satisfaction, and repurchase intentions across the elderly's lifestyle types in the apparel store. Data were obtained from 853 women in the 50's and 60's living in Busan, and were analyzed by factor analysis, Cronbach's alpha, cluster analysis, one-way ANOVA, Duncan test, and path analysis using SPSS WIN 12.0 and LISREL 8.53. The results showed that the lifestyle of elderly consumers was classified into three factors, such as Active self-fidelitist, Economy family-oriented, and Passive-stagnant. Service qualities perceived by the elderly in apparel stores were composed of Personal Service, Facilities Service, Product Service, and Policy Service. Generally, the younger cognized their ages most of the elderly were the more importantly perceived store service quality, the greater satisfied with apparel store services, and the more intended to repurchase apparels at a store. However, economic family-oriented elderlys were the younger cognized their ages, the less satisfied with the apparel service. Additionally, personal and policy services of the apparel store were important variables for elderlys' satisfaction with store services. The findings provide potential explanations and managerial implications for the elderly market.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권1호
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• pp.98-115
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• 2012

New trend called ubiquitous leads the recent business by standardization and integration. It should be the main issue how to guarantee the integration and accountability on each business, especially in mission critical system which is mainly supported by M2M (Machine to Machine) control mechanism. This study is from the analysis of digital forensics case study that is from the M2M Sensing Control Mechanism problem of the "Imjin River" case in 2009, where a group of family is swept away to death by water due to M2M control error. The ubiquitous surroundings bring the changes in the field of criminal investigation to real time controls such as M2M systems. The needs of digital forensics on M2M control are increasing on every crime scene but we suffer from the lack of control metrics to get this done efficiently. The court asks for more accurately analyzed results accounting high quality product development design. Investigators in the crime scene need real-time analysis against the crime caused by poor quality of mission critical systems. It seems to be every need of Real-Time-Enterprise, so called ubiquitous society on the case. We try to find the efficiency and productivity in discovering non-functional design defects in M2M convergence products focusing on three metrics in study model with quick implementation. Digital forensics system in present status depends on know-how of each investigator and is hard to expect professional analysis on every field. This study set up a hypothesis "Co-working of professional investigators on each field will qualify Performance and Integrity" especially in mission critical system such as M2M and suggests "Online co-work analysis model" to efficiently detect and prevent mission critical errors in advance. At the conclusion, this study proved the statistical research that was surveyed by digital forensics specialists around M2M crime scene cases with quick implementation of dash board.

• 한국콘텐츠학회논문지
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• 제18권1호
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• pp.403-411
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• 2018

본 연구는 신제품에 대한 수용 태도를 사례를 통해 분석한 것이다. 본 연구에서 적용된 사례의 내용은 최근에 상영된 영화"상의원(尙衣院)"을 대상으로 신제품의 수용 태도에 대하여 분석하였다. 상의원은 조선시대 왕실의 의복을 관장하는 기관으로 왕과 왕비 등의 특수 계층의 의복을 주관하는 기관이었다. 보수적이며 폐쇄적인 시장 환경 속에서 신제품의 수용에 대한 태도는 내부적 및 외부적 요인들에 의해 많은 영향을 받는다. 기존 시장에서의 경쟁 우위를 확보하기 위한 권위적 및 보수적 태도가 결국 신제품의 수용을 방해하거나 외면을 초래한다. 결국 신제품에 대한 혁신 저항성을 나타나게 된다. 반면에 개방적인 시장에서의 신제품 수용은 자신들의 편익이나 가치를 존중하는 태도가 형성되면 바로 신제품 수용에 대한 태도가 형성됨을 알 수 있다. 이러한 시장 리더들은 자신의 가치를 추구하는 방식에 따라 자신의 제품을 고수하거나 혁신을 수용하는 태도를 형성하게 된다. 이를 위해 다른 사례를 통해 본 연구의 타당성을 검증하였다. 결국 시장에서 신제품의 성공적인 시장 진입은 소비자들에게 제공되는 가치의 전달을 잘 이해시켜야만 성공할 수 있음을 시사한다.