• 한국의류학회지
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• 제33권10호
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• pp.1519-1529
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• 2009

This study investigates the influences of the impulse buying tendency of consumers, apparel price and scarcity messages on purchasing behavior at the time of purchase on the internet. This study was comprised of 2 (impulse buying: high versus low) $\times$ 2 (price of Internet purchase products: high apparel price versus low apparel price) $\times$ 2 (scarcity message: quantity scarcity message versus time scarcity message) with three mixed elements. The subjects of this study were 400 college students in the Seoul and Gyeonggi area. A total of 95 students who had a high tendency for impulsive purchase and 104 who had a low tendency participated in the survey. Data are analyzed by factor analysis, T-test, and ANOVA. The results of this study are as follows. 1. At the time of group buying on the Internet, impulse buying tendency, apparel price, and scarcity message had a statistically significant interaction effect on consumer preferences. 2. At the time of purchase on the Internet, impulse buying tendency, apparel price, and scarcity message did not have a statistically significant interaction effect on the intention of consumers to make a purchase. However, there was a significant difference in the intention to make a purchase based on impulse buying tendency and apparel price.

• 한국산학기술학회논문지
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• 제18권1호
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• pp.663-668
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• 2017

본 연구는 미술 실기 교육인 드로잉 수업을 사이버 강의를 통해 어느 정도로 구현할 수 있으며 학습자 입장에서 만족과 불만족 요인은 무엇인지 살펴보고자 했다. 드로잉 수업은 드로잉에 대한 개념적인 이해와 실제 기법을 학습하며 과제를 수행하도록 구성되었다. 드로잉 과목을 개발한 2014년과 부분 수정을 거친 2016년에 콘텐츠 만족도 평가와 강의 평가를 통해 과목 평가를 실시하였다. 그 결과, 콘텐츠 만족도와 강의 평가 모두 학교에 개설된 전체 과목들의 평균과 유사한 점수를 보였다. 세부적으로 보면, 콘텐츠 만족도에서 강의 내용 구성은 좋은 평가를 받았지만 상호작용은 낮은 평가를 받았다. 강의평가의 경우 교수의 열의와 응답 성실성은 높은 평가를 받았지만, 강의에 대한 전반적 만족도는 낮은 편이었다. 또한, 학생들의 자기 평가도 낮은 편이었다. 이러한 결과는 학생들이 더 많은 실습에 대한 요구를 가지고 있으며, 더 적극적인 상호작용을 원한다는 것을 의미한다. 본 연구는 사이버 교육 환경에서 미술 실기 교과를 시도했다는 점에서 의의를 가진다.

• 한국지역사회생활과학회지
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• 제22권1호
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• pp.145-154
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• 2011

This study investigated the effects of young children's learning-related skills and the maternal involvement on academic abilities. The sample consisted of 310 children from 7 child-care centers located in Seoul and Gyeonggi Province. All variables were measured by the teachers and the mothers of surveyed children. The instrument included the Korean Child Development Inventory(K-CDI) for 4 to 6-year olds and Preschool Learning Behavior Scale(McDermott et al 2000) and the questionnaire on mother's involvement about their children's education. The collected data was analyzed by t-test and hierarchical regression using the SPSS Program. The findings are as follows. First, regardless of the family income level, verbal comprehension and numerical abilities were positively associated with their learning-related skills of young children. Second, the interaction effect of learning-related skills and the mothers' involvement on verbal comprehension of young children in the low-income families was observed. However, no interaction effect was seen in terms of learning-related skills and the maternal involvement on verbal comprehension and numerical abilities of young children in the high-income families. These findings highlight the importance of learning-related skills and their mothers' involvement during the preschool period for the low-income family in improving the early academic achievement.

• 대한기계학회논문집B
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• 제39권8호
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• pp.693-702
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• 2015

본 논문은 NACA 익형의 블레이드를 가지는 다리우스 수직축 풍력발전기(VAWT)의 성능특성에 대한 연구이다. 다양한 설계변수를 이용한 다리우스 VAWT 의 최적 형상을 예측하기 위해서 블레이드 근처에서 나타나는 공력특성 및 박리유동, 유동과 블레이드 간의 상호작용, 이로 인해 유도되는 토크 및 출력특성 등을 분석하였다. 블레이드의 최적 형상 설계 및 주변 유동과의 상호작용 특성을 보기 위하여 다양한 인자들 (즉, 코드길이, 로터직경, 피치각, 블레이드의 두께비 및 비틀림각 등)을 고려하였다. 본 연구에서 연구결과로는 TSR 가 낮은 영역에서는 솔리디티가 큰 로터가 높은 출력계수를 가지는 반면, TSR 이 높은 영역에서는 솔리디티가 작은 로터가 높은 출력계수를 가진다. 블레이드의 익형이 안쪽으로 향하는 피치각은 $-2^{\circ}$와 비틀림각이 $0^{\circ}$ 일 때, 다리우스형 VAWT 가 최대 출력을 발생하였다.

• 복식
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• 제57권6호
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• pp.160-171
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• 2007

This research studied men's cosmetics purchasing behavior based on the level of interest one has in one's appearance, the country of origin, and the sales promotion of the cosmetics. The study was conducted by experimental $2{\times}[2{\times}2]$ design by combining the 3 variables mentioned above. The Independent variables in this research were levels of appearance interest(high vs. low), the country of origin(Korean vs. foreign), and types of sales promotion(discount vs. coupon). The dependent variables were the purchase behaviors including favor to cosmetics and purchase intent. Two hundred male consumers participated for the study. Data analysis conducted were factor analysis, cluster analysis and ANOVA. The results were as follows. 1. Male consumers' cosmetics favorness: 3-way significant interaction, in appearance interest, the country of origin, and types of sales promotion, was found for favor to male cosmetics. When male subjects were provided with price discounts and skin care coupons for the Korean cosmetics, they didn't reveal significant differences in favor, regardless of the level of appearance interest. However, for the imported cosmetics, male subjects with high appearance interest showed more favor to the cosmetics than the ones with low appearance interest. 2. Male consumers' purchase intent: 3-way significant interaction, in appearance interest, the country of origin, and types of sales promotion was found for the purchase intent. When male subjects were provided with price discounts and skin care coupons for the Korean cosmetics, they didn't show significant difference in purchase intent, regardless of their appearance interest. However, for the imported cosmetics, male consumers with high appearance interest reported more purchase intent than the ones with low appearance interest.

• 유통과학연구
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• 제14권10호
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• pp.117-126
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• 2016

Purpose - Color is perceived to have an effect on humans' cognition and behavior because of its association with specific concepts. Since there are few studies linking color and price presentation, we investigated a constrained condition of consumers' regulatory focus and involvement. Research design, data, and methodology - We performed a 2 (color: red vs. black) × 2 (regulatory focus: prevention vs. promotion) × 2 (involvement: high vs. low) test of our hypothesis. The target product was a portable data storage device (USB) and data from 165 respondents were analyzed. Each condition had two stages. In the first, product information and price were presented. After reviewing the product information, respondents evaluated price attractiveness. In the second stage, respondents filled out regulatory focus and involvement questionnaires. The main variables were color, regulatory focus, and involvement. Therefore, we ran a three-way ANOVA (Analysis of Variance) to test our hypothesis. Results - When the price was red (vs. black), consumers perceived the red price as more attractive than the black price. However, this effect varied by situation. Specifically, in the low involvement condition among prevention-focused consumers, when the price was in red, price attractiveness was higher than when the price was in black. However, for promotion-focused consumers, there was no difference in the price color effect. In the high involvement condition, promotion-focused consumers showed stronger price attractiveness for the red price than the black price. However, the effect of price color diminished for prevention-focused consumers. That is, prevention-focused consumers did not reveal a different price perception between red versus black in the high involvement condition. Conclusions - This research contributes by academically linking the effects of color to price attractiveness, and focusing on the interaction of regulatory focus and involvement. When involvement is low, the effect of red disappeared for promotion-focused consumers, whereas the same happened for prevention-focused consumers under the condition of high involvement.

• 한국지진공학회논문집
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• 제15권3호
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• pp.1-9
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• 2011

자기부상열차가 중 저속 및 초고속 주행 시 차량의 주행특성 및 교량의 동적 응답 결과를 제시하고자 한다. 수직 자유도 및 회전 자유도를 포함한 10자유도 자기부상열차에 대한 운동방정식을 유도하고, 모드 중첩법을 이용하여 교량의 운동방정식을 구성하였다. 또한 제어 방법으로 UTM01제어기법을 적용하여 수치해석을 수행하였다. 해석 예제로 노면조도, 가이드웨이의 처짐비, 차량 속도 등이 교량의 처짐과 차량의 부상공극 및 여러 가지 변수에 미치는 영향을 파악하였다. 부상공극은 조도의 조건에 따라 그 차이가 확연히 드러나고 또한 자기부상열차의 속도가 증가함에 따라 부상공극이 증가함을 알 수 있었다. 그리고 자기부상열차가 중, 저속 주행 시에는 교량에 대한 영향이 미비하지만 초고속 주행 시 교량에 대한 동적확대계수가 큰 값을 보여주었다.

• Mycobiology
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• 제48권5호
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• pp.410-417
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• 2020

Fungal ecological interactions play a key role in structuring community assemblages. These associations may involve both antagonistic and synergistic relationships, which are commonly influenced by abiotic factors such as nutrient conditions. However, information for extreme, oligotrophic systems remain poor. Herein, interactions among key members of the aquatic transient fungal community (Aspergillus niger, Cladosporium sp., and Coprinellus micaceus) of a low-nutrient freshwater system in the Cuatro Ci enegas Basin, Mexico were studied. Pairwise interaction bioassays were explored in vitro under different nutrient conditions, including carbohydrates-rich, carbohydrates and amino peptides-rich, and low nutrients. Our results indicated that antagonistic patterns prevail among the studied taxa. However, nutrient-dependent changes were observed in Cladosporium sp. shifting to synergy under carbohydrates-rich conditions, suggesting changes in the fungal community composition as a result of nutrient enrichment. Remarkably, our findings contrast with previous work demonstrating mainly synergistic interactions between our tested fungal isolates and co-occurring autochthonous bacteria (Aeromonas spp. and Vibrio sp.) under low-nutrient conditions. This observation may indicate that bacteria and fungi exhibit distinct community-level responses, driven by nutrient conditions. This contributes to the knowledge of fungal community dynamics and interspecific interactions in an oligotrophic ecosystem, highlighting the relevance of nutrient-based shifts and antagonistic interactions in ecosystem dynamics.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2009년도 제38회 동계학술대회 초록집
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• pp.13-13
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• 2010

Switching an elementary excitation by injecting a single carrier would offer the exciting opportunity for the ultra-high data storage technologies. However, there has been no methodology available to investigate the interaction of low energy discrete carriers with nano-structures. In order to map out the spatial dependency of such single carrier level interactions, we developed a pulse-and-probe algorithm, combining with low temperature scanning tunneling microscopy. The new tool, which we call single carrier spectroscopy, allows us to track the interaction with the target macrostructure with tunneling carriers on a single carrier basis. Using this tool, we demonstrate that it is possible not only to locally write and erase individual bi-solitons, reliably and reversibly, but also to track of creation yields of single and multiple bi-solitons. Bi-solitons are pairs of solitons that are elementary out-of-phase excitations on anti-ferromagnetically ordered pseudo-spin system of Si dimers on Si(001)-c(42) surfaces. We found that at low energy tunneling the single bisoliton creation mechanism is not correlated with the number of carriers tunneling, but with the production of a potential hole under the tip. An electric field at the surface determines the density of the local charge density under the tip, and band-bending. However a rapid, dynamic change of a field produces a potential hole that can be filled by energetic carriers, and the amount of energy released during filling process is responsible for the creation of bi-solitons. Our model based on the field-induced local hole gives excellent explanation for bi-soliton yield behaviors. Scanning tunneling spectroscopy data supports the existence of such a potential hole. The mechanism also explains the site-dependency of bi-soliton yields, which is highest at the trough, not on the dimer rows. Our study demonstrates that we can manipulate not just single atoms and molecules, but also single pseudo-spin excitations as well.

• 방사선산업학회지
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• 제10권1호
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• pp.7-12
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• 2016

Ikaros, a transcription factor containing zinc-finger motif, has known as a critical regulator of hematopoiesis in immune system. Ikaros protein modulates the transcription of target genes via binding to the regulatory elements of the genes promoters. However the regulatory function of Ikaros in other organelle except nuclear remains to be determined. This study explored radiation-induced modulatory function of Ikaros in cytoplasm. The results showed that Ikaros protein lost its DNA binding ability after LDIR (low-dose ionizing radiation) exposure. Cell fractionation and Western blot analysis showed that Ikaros protein was translocated into cytoplasm from nuclear by LDIR. This was confirmed by immunofluorescence assay. We identified Autotaxin as a novel protein which potentially interacts with Ikaros through in vitro protein-binding screening. Co-immunoprecipitation assay revealed that Ikaros and Autotaxin are able to bind each other. Autotaxin is a crucial enzyme generating lysophosphatidic acid (LPA), a phospholipid mediator, which has potential regulatory effects on immune cell growth and motility. Our results indicate that LDIR potentially regulates immune system via protein-protein interaction of Ikaros and Autotaxin.