• Child Health Nursing Research
• /
• 제19권1호
• /
• pp.29-38
• /
• 2013

목적 본 연구의 목적은 아동의 휴대전화 중독 사정을 위한 부모용 도구를 개발하고, 개발된 도구의 신뢰도와 타당도를 검정하는 것이다. 방법 아동의 휴대전화 중독 사정에 대한 개념적 기틀 설정, 예비 문항 작성, 내용 타당도 검정 및 사전 조사를 통해 최종 20문항을 구성하였고, 초등학교 1-6학년 아동의 부모 465명과 4-6학년 아동 178명을 대상으로 구성타당도, 준거타당도, 신뢰도 검정을 하였다. 결과 문항분석 결과 해당문항 제외 시 ${\alpha}$값의 변화가 .92-.93의 범위였고, corrected item-total correlation 계수가 .50-.76의 범위였다. 요인분석 결과 금단, 통제력 상실, 집착의 세 요인이 추출되었고, 세 요인의 설명변량은 60.30%였다. 준거타당도 검정 결과 휴대전화 중독은 자기통제력과 역상관 관계가 있었고, 아동이 응답한 휴대전화 중독, 충동성, 문자메시지 발신 및 수신횟수, 통화횟수 및 시간과 순상관 관계가 있었다. 신뢰도 검정 결과 Cronbach's ${\alpha}$가 .94였고, 반분법에 의한 Guttman의 신뢰도 계수가 .87이었다. 휴대전화 중독 정도를 평가하는 기준으로 표준점수를 활용하여 70점 이상이면 휴대전화 고위험사용군, 63점 이상이고 70점 미만이면 위험사용군, 63점 미만이면 일반사용군으로 구분하였다. 결론 아동의 휴대전화 중독 사정을 위한 부모용 도구는 신뢰도와 타당도가 높은 도구로 아동의 휴대전화 중독을 조기 발견하고, 적합한 중재를 개발하여 제공하며, 중재 효과를 평가하는 데에 활용할 수 있을 것이다.

• 한국주거학회논문집
• /
• 제8권2호
• /
• pp.113-122
• /
• 1997

This study analyzes behavior characteristics of illegal urban stall keepers scattered in the metropolitan area and their effects to urban life. The main findings of this study are follows. First, the stall keepers are different in terms of 1) items 2) opening hour and 3) user characteristics depending on locational environment of market boundaries. Second, the stall keepers exit in any time and any place if demand exists. Third, the effects of stall keepers to urban life are twofold ; they facilitate urban life by providing cheap and various commodities/services and they bring about negative effects such as obstacle to traffic flows, waste generation, and so on.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 1995년도 추계학술대회 논문집
• /
• pp.859-863
• /
• 1995

Presented in the paper are a review of sorting and buffering system(SBS), the design procedure of a SBS and an analytical model for the initial alternative generation. SBS is an automated material handling system in which incoming items of different part types are automatically sorted and buffered so that the processing machines can process the part in lots. SBSs play a key role in modern manufacturing systems ans are widely found in mass fabrication lines, packaging and palletizing, and disribution centers.

• 한국의류학회지
• /
• 제44권4호
• /
• pp.691-707
• /
• 2020

This study used big data analysis as informatics that identified keywords related to new-tro fashion; in addition, it conducted differences and types of classification according to demographic characteristics. First, it has been shown that two different generations, the Millennials and the older generation, coexist as important keywords in the context of new-tro fashion. Second, according to age, it has been shown that the keywords that appear in new-tro fashion are taken differently. In most regional keywords that differed in the classification, respondents in their 20s, 30s and 40s were classified as emotional, while those in their 50s or older perceived as factual phenomena. The results of eliciting keywords in new-tro fashion through big data analysis, keywords that reflect phenomena, design details and considerations, fashion styles, fashion brands, fashion items, social media, influence, and emotional adjectives. This study confirmed the meaning of new-tro fashion based on past that can give enjoyment to the new generation and memories to the older generation.

• Journal of Advanced Marine Engineering and Technology
• /
• 제34권5호
• /
• pp.625-631
• /
• 2010

최근 몇 년간 에너지 위기에 대한 우려가 급격히 증가하고 있으며, 방대한 에너지소비에 따른 환경오염도 큰 문제로 대두되고 있다. 사회적으로 에너지 위기가 고조되고 있는 가운데 새로운 에너지나 신재생에너지에 대한 관심이 증가하고 있다. 본 연구는 이러한 문제를 해결하는 하나의 수단으로 태양에너지를 적극적으로 이용하기 위한 태양광발전시스템의 발전효율을 상승시키는 일환으로 대류열전달의 향상을 도모한 실험을 수행한 결과를 정리한 논문이다.

• 한국신재생에너지학회:학술대회논문집
• /
• 한국신재생에너지학회 2009년도 춘계학술대회 논문집
• /
• pp.475-475
• /
• 2009

Recent alarming acceleration of global warming has made power generations using renewable energy to be in the middle of the spotlight. Korean government has also announced that it will make the related industry to be nation's one of main export items with high investments to low carbon green growth industry. To achieve this goal of exporting the renewable energy power generation system beyond domestic use, internationally acceptable rules should be applied and the three step processes of design, performance assessment and certification should follow international standards. Corresponding this international requests, IEC(International Electrotechnical Commission) is conducting the establishment of rules in TC88 for technical requirements of wind turbines. Design life-time of a wind turbine is required to be at least 20 years. In the meantime, the wind turbine will experience a lot of load cases such as extreme loads and fatigue loads which will include several typhoons per year and extreme gusts with 50 years recurrence period as well as endless turbulence flow. Therefore, IEC 61400-1 specifies design load cases to be considered in the wind turbine design and requires the wind turbine to withstand the load cases in various operational situations. It thus appears that the examination of contents and decisions discussed in the international standard committee will help people in the field of offshore wind energy and ocean energy converters.

• The Journal of Asian Finance, Economics and Business
• /
• 제5권3호
• /
• pp.81-93
• /
• 2018

This study developed and tested the impact of hallyu 4.0, social media, and consumer ethnocentrism on the decision to purchase Korean products of Generation C in Vietnam. Both qualitative and quantitative methodologies were utilized in this study. Qualitative research was first carried out with in-depth interview, conducted to derive measurement items for the interested constructs. Quantitative research used cross-sectional field design by pilot study and official study. The model was tested and developed using data collected by questionnaires, from a sample of 575 respondents, by both electronic and paper surveys with non-probability and convenience sampling techniques. SPSS 20 and AMOS 20 software were employed to analyze the data. The results of structural equation modeling showed that hallyu 4.0, social media, and consumer ethnocentrism influenced the intermediates variables: subject norms, trust, attitude and behavioral intention and influenced purchase decision. The hallyu 4.0, social media, and consumer ethnocentrism are independent variables. They impact purchase decision through mediating variables such as trust, subjective norms, attitude and behavioral intention. Social media influences not only to trust but also to subjective norms. Subjective norms influence on purchase decision. This study also discovers an interesting fact that trust and attitude variables have an impact on behavioral intention and purchase decision.

• 웰빙융합연구
• /
• 제7권2호
• /
• pp.31-37
• /
• 2024

Purpose: Pop-up stores have emerged in the retail industry in recent years, offering consumers a new shopping experience for a limited time and location, and are used for a variety of purposes, including driving purchase behavior. In particular, they have become an important marketing tool among Gen MZ consumers who are quick to acquire information and sensitive to trends. Therefore, this study aims to analyze the impact of pop-up store characteristics on the purchasing behavior of MZ consumers. Research design, data and methodology: Based on a qualitative research approach, the study analyzed successful pop-up stores in Korea to closely examine how the limited operating period and experience-oriented marketing strategy of pop-up stores affect the perceptual attitudes and purchase decision process of Generation MZ. Results: The results of the case study revealed that selling limited edition items, maximizing customer experience factors, and differentiated concepts are the main factors that positively influence the purchase behavior of Gen MZ consumers. These factors contribute to the enhanced purchasing behavior of Gen MZ, making pop-up stores an effective marketing strategy. Conclusions: Pop-up stores are more than just a sales space, but an important communication channel that can strengthen the emotional connection with Gen MZ and effectively communicate brand values. This study provides useful insights for brands and companies to develop marketing strategies for MZ.

• 종양간호연구
• /
• 제10권1호
• /
• pp.59-67
• /
• 2010

Purpose: The purpose of this study was the development and validation of knowledge scale for patients with breast cancer (KS-Br) in Korea. Methods: The process included the construction of a conceptual framework, generation of preliminary items, and the test of validity and reliability of the scale. Thirty-seven items were developed through an evaluation process by 10 experts and 24 items were finally confirmed through item analysis. Psychometric testing was performed with a convenient sample of 303 women with breast cancer. The data was analyzed using independent t-test, Pearson's correlation, and calculation of KR-20. Results: Participants averaged 70.8% correct on the test. The KS-Br has 24 items consisting of 5 categories: incidence of breast cancer, diagnosis and treatment, symptom management, sexuality, and maintenance of daily life. Validity was supported by the use of content validity, known-group technique, and criterion-related validity. Women who had undergone education intervention scored significantly higher than women who had not (p<.001). KS-Br scores were significantly correlated with those of Mishel's Illness Uncertainty Scale (r=-.214, p<.001). Internal consistency of the KS-Br was appropriate (KR20=.805). Conclusion: This study reveals that the KS-Br is reliable and valid scale to measure the knowledge of breast cancer. Therefore, this scale can be effectively utilized to assess the knowledge of patients with breast cancer regarding their disease.

• 대한간호학회지
• /
• 제37권3호
• /
• pp.313-323
• /
• 2007

Purpose: Health-related quality of life (HRQOL) in patients with cardiovascular disease in Korea has rarely been studied, mostly due to the lack of a psychometrically validated disease-specific instrument. The purpose of this study was to develop and validate a cardiovascular specific-HRQOL questionnaire (CD-QOL). Method: The CD-QOL was developed and validated as follows; item generation, pilot study, and psychometric tests. Patients were recruited from three-university hospitals. The patients were asked to complete the preliminary questionnaire comprising the content-validated items, SF-36, and CES-D. The NYHA and KASI classifications were used to classify the functional performance of the patients. The data was analyzed using correlation, factor analysis, multidimensional scaling, multitrait/multi-item matrix, ANOVA, and Cronbach's alpha. Result: Preliminarily, thirty-nine items were generated. Factor analysisextracted a five-factor solution with a total of twenty-two items. One item was deleted based upon the MDS. The remaining items were moderately correlated with the subscales of the SF-36 and associated with depression measured with the CES-D. The mean scores of patients in NYHA and KASI class I were significantly higher than those in NYHA and KASI class II or/and III, which suggested patients with better functional performance were likely to have a better HRQOL. Cronbach's alphas of the total and subscales were all greater than 0.70. Conclusion: The CD-QOL is a easily applicable instrument with excellent psychometric properties of content, criterion, factorial, convergent, and known-groups validity, and internal consistency reliability in Korean patients with cardiovascular disease.