• Journal of Mechanical Science and Technology
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• 제19권3호
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• pp.792-801
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• 2005

This paper discusses a dc motor equipped electric power steering (EPS) system and demonstrates its advantages over a typical hydraulic power steering (HPS) system. The tire-road interaction torque at the steering tires is calculated using the 2 d.o.f. bicycle model, in other words by using a single-track model, which was verified with the J-turn test of a real vehicle. Because the detail parameters of a steering system are not easily acquired, a simple system is modeled here. In previous EPS systems, the assisting torque for the measured driving torque is developed as a boost curve similar to that of the HPS system. To improve steering stiffness and return-ability of the steering system, a third-order polynomial as a torque map is introduced and modified within the preferred driving torques researched by Bertollini. Using the torque map modification sufficiently improves the EPS system.

• 한국정보시스템학회지:정보시스템연구
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• 제24권3호
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• pp.75-94
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• 2015

Purpose While new versions of mobile applications could offer users better computing environment, users are not always comfortable with them for various reasons. Considering making update decisions is important task for users, it is crucial for us to understand users' behavior and attitude on app updates. The purpose of this study is to explain why mobile users succumb to both reactance toward the update and satisfaction to the current version, ultimately leading them to feel the regret by employing three theoretical perspectives including regret theory, status quo bias theory and the dual model. Design/methodology/approach Survey data collected from 204 mobile users was used to test the research model using partial least squares analysis. The results have shown that both reactance toward the update and satisfaction to the current version have negative impacts on individuals' decisions to update, which leading to their regret after updating the applications Findings By integrating both status quo bias and regret theory in the model, this study tried to explain why mobile users feel regret in application update settings. More specifically, this study has proposed a novel framework that introduces an individual's update decision on mobile applications.

• 정보교육학회논문지
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• 제9권2호
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• pp.329-337
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• 2005

일선 교육 현장에 ICT의 본격적 활용과 함께 교육 방법 및 평가에서 많은 발전과 변화가 일어나고 있다. 그러나 교육 평가에 있어서 현장 교사들이 실제적 효율성을 느끼기에는 부족한 실정이다. 특히 평가 결과를 교육에 활용하는 데는 미비한 실정이다. 이의 원인은 계속되는 평가 결과를 유지시키지 못하는 경우도 많으며, 그 결과를 아동의 지속적인 학습활동에 반영시키지 못하기 때문이다. 본 연구에서는 다양한 형태의 문항을 쉽게 관리할 수 있으며, 문제의 유형에 적합한 정형화된 폼을 제시하여 교사들이 문제를 간단하고 편리하게 제작하고, 평가 내용을 다양한 관점에서 확인할 수 있는 효율적인 문항 관리 시스템을 개발한다.

• 한국간호교육학회지
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• 제10권2호
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• pp.194-204
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• 2004

The purpose of this study was to provide the basic data needed to create more desirable psychological home environment and the prevention and relief of depression by examining the relations between psychological home environment and depression with the subjects of high school students. The study materials included standard questionnaires made up of forty two questions on psychological home environment by Dr. Jeong, Won-sik(1981), twenty one questions on depression indicators by Beck(1969). Collected data were analyzed by using SPSSWIN 10.0 Program through frequency, percentile, mean, standard deviation, t-test, ANOVA, Scheffe's test, and Pearson correlation coefficient. The main results of this study were as follows; Out of 210 perfect scores for the psychological home environment of the subjects, the mean was $140.54{\pm}11.21$, opening was $41.02{\pm}5.67$, affection was $37.59{\pm}5.80$, autonomy was $35.45{\pm}4.85$, and achievement was $26.48{\pm}6.79$. The depression of the subjects were slight, showing $13.78{\pm}9.73$, with normal condition (0-9scores) 40.0%, slight depression(10-15scores) 23.3%, mild depression(16-23scores) 20.3%, severe depression(24-63scores) 16.4%. The analyses of the relation between psychological home environment and depression of the subjects reveal that achievement-depression(r=.192, p=.000), opening-depression (r=-.296, p=.000), affection-depression(r=-.377, p=.000), and autonomy-depression(r=-.341, p=.000) has all meaningful relations. In summary, these data can be interpreted that high school students were likely to feel more depressed when they recognized their own home environment as under the burden of achievement, and to feel less depressed when they recognized it as open, affectionate, and autonomous.

• 한국식품조리과학회지
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• 제23권6호
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• pp.839-847
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• 2007

The aims of this study were twofold: i) to investigate changes in the sensory characteristics and consumer preference of diluted espresso drinks according to different dilution rates; ii) to compare the physicochemical characteristics between diluted espresso coffees, using the preferred coffee of this study and commercial products from coffee shop chains. Descriptive analysis using a 15 cm line scale, and a consumer preference test were carried out by 6 trained panelist,; and 50 consumers (F=39, M=11), respectively. Appearance (transparent, black), odor (bitter, rich), taste (bitter, burnt, astringent, umami, sour), and mouth-feel (aftertaste, body, coarseness, oily, roughness, soft-swallowing) were significantly different among the 3-, 5-, 7-, 9-, and 11-times dilution rates. In particular, the sensory characteristics associated with mouth-feel showed obvious differences with the dilution rates. In the consumer preference test, the 9-times diluted espresso had the highest preference, whereas the 3-times diluted espresso showed the lowest preference. Moreover, the 9-times diluted espresso demonstrated similar physicochemical characteristics such as pH, sugar content, and total solid content to those of the commercial diluted espresso drinks from coffee shop chains. In conclusion, the sensory characteristics and consumer preference of the diluted espressos were influenced by the dilution rates.

• 한국치위생학회지
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• 제12권4호
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• pp.741-749
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• 2012

Objectives : High school students to measure fear of dental treatment, dental health care workers according to the level of reliability of this study is to determine the extent of terror was carried out. Methods : Located in Gwangju, 165 high school students were surveyed. SPSS windows ver. 11.0 by demographic characteristics and oral health characteristics of the frequency and percentage, and dental health care workers about the reliability of the Chi-square test, the general characteristics and oral health characteristics by dental fear of the t-test and one way ANOVA and were factors associated with dental fear of the stepwise multiple regression analysis was performed. General characteristics, except Cronbach-${\alpha}$ coefficient was 0.911. Results : According the general fear of Dental Treatment Fear Factor item 4, you'll feel the highest fear when you feel the muscle tension and the needle pricks your skin. The reliability of dental health care workers if the dentist lower the higher the grade, subjective oral health status is considered more reliable health was higher, the stronger the reliability of pain was significantly lower (p<0.05). Other care coordination include the reliability of sources of interest in subjective oral health history, no past experience in treating pain and increase the number of reliability was low (p<0.05), past experience and increase the number of pain during treatment the stronger the fear of more pain showed an increase (p<0.05). Conclusion : According the related factors about the fear of dental treatment, stimulus-response and fear of dental office have increased, the fear of dental treatment increase.

• 한국정보전자통신기술학회논문지
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• 제8권1호
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• pp.1-11
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• 2015

본 연구는 자원봉사자의 참여동기 및 대인관계가 자원봉사활동 만족도에 미치는 영향을 알아보고자 한다. 연구대상은 중부권 ${\bigcirc}$군에 소재한 자원봉사단체 회원 313명이며, 2014년 4월2일부터 8월31일까지 설문조사를 실시하였다. 자료 분석은 SPSSWIN 18.0프로그램을 이용하여 t-test, 상관분석, 다중회귀분석을 실시하였고 실증분석은 유의수준 5%에서 검증하였다. 분석결과는 첫째, 일반적 특성에서는 여성, 고학력, 기혼자의 봉사활동만족도가 높은 것을 알 수 있었다. 둘째, 지역특성에 따른 봉사활동 만족도는 장기거주자, 봉사활동이 지역발전에 기여한다는 인식이 높은 봉사자의 만족도가 높게 나타났다. 셋째, 자원봉사 활동 참여동기가 높은 자원봉사자는 자원봉사활동 만족도가 높은 것으로 나타났다. 넷째, 자원봉사자들의 대인관계가 원만할수록 봉사활동만족도가 높은 것을 알 수 있다. 본 연구의 시사점은 봉사활동 참여동기와 대인관계가 자원봉사활동 만족도에 중요한 영향을 미치는 것으로, 향후 자원봉사자의 만족도 향상을 위한 개선정책의 기초자료가 될 것으로 사료된다.

• 감성과학
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• 제15권1호
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• pp.57-64
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• 2012

본 연구는 빨간색 셔츠의 시각적 감성을 비교 분석하여 소비자 감성을 반영한 셔츠의 색채기획에 도움을 주고자, 한국과 중국 대학생을 대상으로 온라인상에서 시각적 평가방법으로 7가지 톤의 빨간색 색지와 빨간색 셔츠에 대한 시각적 감성과 선호도를 평가하였다. 평가된 자료는 빈도 분석, 평균, 요인 분석, t-test를 실시하여 분석하였다. 빨간색 셔츠의 시각적 감성은 스포티, 로맨틱, 클래식 등 3개의 감성요인이 추출되었는데, 이 요인들은 톤, 성과 국적에 따라 유의한 차이가 나타났다. 중국 대학생은 한국 대학생에 비해 strong톤의 빨간색 셔츠가 더 스포티하고, dark톤이 더 클래식하다고 지각하였다. 또한 한국 대학생은 deep톤의 빨간색 셔츠를 로맨틱하다고 평가하였으나, 중국 대학생은 light톤과 pale톤의 셔츠를 로맨틱하다고 평가하였다. 한편, 7가지 톤의 빨간색 셔츠에 대한 선호도는 국적 및 성에 따라 유의한 차이를 보였다. 중국 대학생은 한국 대학생보다 dark톤과 pale톤의 빨간색 셔츠를 더 구매하고 싶어 하였으나, 한국 대학생은 strong톤의 셔츠를 더 선호하였다. 또한 남자 대학생이 dark와 dull톤의 빨간색 셔츠를 더 선호하는 반면, 여자 대학생은 light톤의 빨간색 셔츠를 더 선호하였다.

• 한국의류학회지
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• 제44권6호
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• pp.1037-1052
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• 2020

This study evaluates the comfort and suitability of safety clothing. We made three safety clothes 'y', 'lg', 'lgH'. Only 'y' made with fluorescence fabric has passed International Standards (ISO 20471). A wearing test investigated the physiological response and subjective sensations at 30℃ and 50% RH, six men participated. Mean skin temperature and tympanic temperature showed significant difference with experimental course (p<.05). The micro-temperature (Tm) showed significant differences between three garments on the thigh (p<.01). When wearing 'lg', Tm was the highest. Micro-humidity indicated the interaction between clothing and the experimental course on the chest with no significant difference; however, there was a low tendency when wearing 'lgH' after the second half of exercise. The sweat rate indicated a significant difference between 'lg' and 'lgH' at 20 minutes of exercise (p<.05). Three sensations showed significant differences with the time (p<.01), there was also a tendency to feel hotter and more humid when wearing 'lg'. Skin sensation showed significant differences between pre-experiment and post-experiment (p<.05), 'y' was the most preferred. The 'lg' with long-sleeved currently worn in Korea tended to feel hotter, more humid and more uncomfortable than 'y'. It indicates that there is room for improvement in Korean safety clothing.

• 벤처혁신연구
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• 제2권1호
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• pp.119-130
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• 2019

본 연구에서는 농촌 체험활동인 감각(Sense), 감성(Feel), 인지(Think), 관계(Relate), 행동(Action) 체험변수가 재방문의도에 유용하게 적용될 수 있는지를 검정한 결과 감각, 관계, 행동 체험은 채택되었으며, 감성과 인지체험 변수는 기각이 되어서 Schmitt(1999)의 체험마케팅 이론이 농촌 6차산업 체험 마케팅 활동에도 적용된다는 사실을 확인하였다. 즉, 농촌 체험 활동이 재방문의도에 유의한 영향을 관계를 살펴본 결과 농촌 6차산업 체험구성에서 소비자들의 주의 및 관심을 불러 일으킴으로서 감각적 요소를 자극하고 있고 특히, 체험장과 연결된 시설 환경과 밀접한 관련이 있다고 판단된다. 감성체험이 기각된 이유로서는 6차산업 인증사업자 체험 프로그램에서 감성적 요소를 도출하는데 있어서 한계점을 가짐으로서 소비자의 감성을 자극할 수 있는 프로그램 개발이 필요할 것으로 판단된다. 인지체험이 기각된 이유로서는 농촌 6차산업의 체험은 놀라움이나 호기심을 유발하지 못함으로서 일상적인 체험 또는 체험소비자의 기대에 부합하지 못하고 있는 것으로 판단된다. 관계체험의 경우 사회적으로 유기적인 관계형성을 통한 체험마케팅이 확장되고 있다라고 판단되며, 행동체험의 경우 농촌 6차산업의 체험은 타인과의 상호작용 및 라이프스타일과 연관성 있는 체험을 구성하여 진행되고 있다고 판단된다.