• 한국전문물리치료학회지
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• 제20권3호
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• pp.19-26
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• 2013

The smart-phone has become a necessity for most people. In this study, we determined that using a smart-phone for 20 minutes can cause increased neck and shoulder muscle activities and fatigue. Seventeen healthy male smart-phone users who attended Yonsei University played a smart-phone game for 20 minutes and changes in their bilateral cervical erector spinae and upper trapezius muscle activities and fatigue were measured. To assess muscle activities and fatigue, we used the following variables: the median frequency, the 50th percentile Amplitude probability distribution function (APDF) value (median load), and the discrepancy in the 90th percentile APDF value and the 10th percentile APDF value (APDF range). A paired t-test was used to compare pre-smart-phone-use status with post-smart-phone-use-status. The median frequency of the bilateral cervical erector spinae and the upper trapezius decreased significantly after 20 minutes of smart-phone use (p<.05). In addition, the 50th percentile APDF value of the bilateral cervical erector spinae and the right upper trapezius increased significantly (p<.05). The APDF range of the bilateral cervical erector spinae and the upper trapezius also increased significantly (p<.05). However, the 50th percentile APDF range of the left upper trapezius was not significantly different (p>.05). These findings suggest that using smart-phones for 20 minutes can induce muscle fatigue and increased neck and shoulder muscle activities.

• 융합정보논문지
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• 제9권1호
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• pp.105-115
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• 2019

본 연구는 아웃도어 브랜드 소비자의 소비가치와 기업의 공유가치창출활동이 소비자의 구매의도에 미치는 영향을 실증적으로 분석하였다. 소비자의 구매의도에 미치는 영향요인으로 소비가치의 하위변수는 기능적 가치, 상황적 가치, 감정적 가치로 설정하였고, 기업의 공유가치창출활동의 하위 변수는 경제적 가치, 관계적 가치, 사회적 가치로 설정하였다. 분석결과, 소비가치의 기능적 가치, 상황적 가치, 감정적 가치는 구매의도에 긍정적인 영향을 미치는 것으로 분석되었고, 기업의 공유가치창출활동의 경제적 가치, 사회적 가치, 관계적 가치도 모두 긍정적인 영향을 미치는 것으로 분석되었다. 분석결과에 따라 아웃도어 브랜드 소비자의 소비가치와 기업의 공유가치창출활동은 모두 구매의도에 긍정적인 요인으로 작용하고 있음을 알 수 있었다. 이러한 결과는 아웃도어 브랜드 산업에서 소비자의 소비가치나 기업의 공유가치창출활동은 이미 소비자의 구매의도에 충분히 반영되었다고 추론할 수 있었다.

• International Journal of Human Ecology
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• 제9권2호
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• pp.1-11
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• 2008

This paper examines the value of unpaid care work using the 2004 time use survey and compared them to economic measures such as GDP, tax revenue, value of paid work, government expenditure on care-related personnel expenditure and remuneration of paid care workers. It employs the mean earnings approach and generalist approach. It finds that the value of unpaid care work (compared to GDP) is between 18% and 29% using different approaches. The value of care of household members and for others in the community (person care) is between 5% and 8%. Furthermore, the value of unpaid care work is greater than that of direct tax regardless of the approach used. In addition, the value of person care is estimated at between 22% and 35% of the total value of the paid economy. The value of unpaid care work far exceeds the value of government expenditure on care-related personnel and the remuneration of paid care workers. This research suggests that unpaid care work (mostly conducted by women) should be recognized as part of production activities. This is because caring and household maintenance activities are necessary for individual well-being but also it contributes to the national economic competitiveness particularly through human resource development.

• The Journal of Asian Finance, Economics and Business
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• 제8권9호
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• pp.219-233
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• 2021

This study would prove the logic that business practice CSR has a positive impact on efficient product value while philanthropic CSR has a positive impact on socio-ethical product value to promote product purchase intention. It would also test the mediating role of efficient product value and socio-ethical product value. Methods: AMOS 22.0 was used to analyze the structural equation model in this work, and the hypotheses were tested after setting the impact of corporate variables on intrinsic variables additionally. Results: This study conducted research that has not been attempted in the preceding studies, classifying CSR into business practice CSR activities related to economic, legal, and ethical responsibilities and philanthropic CSR activities related to the contribution to the community, the connection of donation and business, company-wide philanthropy, and appropriate donation performance. Conclusion: This study would prove the logic that business practice CSR has a positive impact on efficient product value while philanthropic CSR has a positive impact on socio-ethical product value to promote product purchase intention, and evaluating the mediating role of efficient product value and socio-ethical product value, thus providing implications from a new perspective that has not been explored in previous marketing studies.

• Human Ecology Research
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• 제61권1호
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• pp.91-102
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• 2023

The purpose of this study was to develop a housing choice behavior program to cultivate housing value orientation among middle-school students. The importance of cultivating housing value orientation in middle school was examined by investigating the relationship between housing value orientation and housing choice behavior, following which a program was developed to cultivate housing value orientation based on various housing values. Housing choice behavior was defined as selecting the ownership type, housing type, housing size, and neighborhood environment of housing, and the program was developed in 12 sessions to understand housing values and cultivate housing value orientation through learning housing choice behavior. The features of this program were as follows. First, although housing choice behavior is not covered in middle-school home economics, the 2015 revised national curriculum and current middle-school textbooks were analyzed and developed in consideration of the level available in schools. Second, it was possible to develop a housing value orientation that encompasses various housing values, including activities used to consider such values as the basis for housing choice behavior by each sessions. Third, the program was meaningful in that it developed practical problem-solving and living independence skills through learning activities, including available sites, experience cases, and housing welfare that cannot be experienced directly or indirectly.

• 한국식품영양학회지
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• 제35권1호
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• pp.62-73
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• 2022

Omija seed oil was extracted from Omija seeds, a by-product of Omija, using an eco-friendly pressed extraction method. Physicochemical properties and antioxidant activities of 12 extracts using different combinations of seed moisture content (5, 7.5, and 10%) and extraction temperature (25, 49, 75, and 100℃) were then investigated. The highest extraction yield was 31.33% at moisture of 5% and temperature of 75℃. The lowest acid value was 4.18±0.25 at moisture of 5% and temperature of 49℃or moisture of 7.5% and temperature of 25℃. Peroxide value, iodine value, and saponification value were the lowest at 0.64±0.56 meq/kg, 159.38± 6.03, and 57.60±9.40, respectively, at moisture of 5% and temperature of 25℃. The content of total polyphenolics was the highest at 4,413±125 mg TAE/100 g when the moisture content was 10% and the extraction temperature was 25℃. DPPH radical scavenging activities of oil extracts at 20~100 mg/mL were 28.68±7.30~87.65±2.20%. The maximum antioxidant activity and IC₅₀ were 87.65±2.20% and <20 mg/mL, respectively, for extract obtained at moisture of 10% and temperature at 100℃. As a result, the extraction yield, acid value, peroxide value, iodine value, saponification value, and so on were excellent at moisture content of 5% and extraction temperature of 25℃ or 49℃. However, the content of total polyphenolic compounds and antioxidant activity were the highest at moisture of 10% and extraction temperature of 100℃. In conclusion, extracting Omija seed oil from Omija seeds, a by-product of Omija, is effective with a pressed extraction method.

• 한국항만경제학회지
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• 제38권4호
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• pp.1-11
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• 2022

항만배후단지와 이의 자유무역지역 지정 정책이 도입된지 20년 가까이 지났지만 아직까지도 가시적인 성과를 내지 못하고 있다. 특히 환적화물을 통한 항만배후단지의 부가가치 창출은 아주 미미한 수준이라 할 수 있다. 이 논문에서는 항만배후단지 부가가치 창출 정책 실패의 원인을 개념적으로 그리고 실무적으로 접근해 분석해보았다. 이 논문에서는 항만배후단지의 기능적 한계에 대해 살펴보았다. 연구결과, 항만배후단지와 산업단지 및 보세공장 간 기능적 중복이 있음을 알게 되었다. 또한, 항만배후단지와 Port Hinterland의 개념적 차이에 대해 살펴보았는데, Port Hinterland를 항만배후단지와 동일시 함으로써 항만배후단지 '정책의 첫 단추'가 잘못 꿰어질 수 있는 우려가 있음을 알게 되었다. 마지막으로 항만배후단지 부가가치 물류의 한계에 대해 살펴보았는데, 연구 결과 해외의 항만배후단지라고 해서 특별히 '고 부가가치' 활동을 제공하고 있지 않다는 점을 밝혀내었다.

• 한국초등과학교육학회지:초등과학교육
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• 제28권3호
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• pp.263-276
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• 2009

The purpose of this study was to analyze the elementary students' selection of representable value and confident method that appear in measuring activities by using a microgenetic method. The participants were seven elementary students in the fourth grade. They performed the same measuring activities six times for the study period. Data were collected by interview and observation with their activity recording papers and video tape transcription. Their activities were recorded and documented for the analysis. Results were as follows. First, in the time measuring activity, elementary students developed desirably as their measuring experience increased, for example they selected a representable value in use of a repeated measurement and used a various method in the domain of a time measurement and they showed an increase of a quantitative observation in the volume domain except in the length domain. Second, in a confident method of a representable value, though they must rely upon a repeated measurement, they only measure repeatedly in the time domain. Also in the time domain, it doesn't get accomplished a exact confidence of a representable value at a shortage of skill about a measurement. Accordingly this study will be implications for teachers to teach a handling abilities of measuring instruments to elementary students and to be promote understanding a nature of measurement.

• 한국융합학회논문지
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• 제9권7호
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• pp.309-315
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• 2018

삶의 방식 및 환경의 변화로 생활체육의 수요가 증가하고 있으며 해양스포츠 활동의 기회확대로 인해 해양스포츠인구도 빠르게 증가하고 있다. 이에 본 연구는 해양스포츠가 가지고 있는 생활체육으로서의 가치를 문헌연구를 통해 탐구하였다. 탐구 결과, 해양스포츠는 여가만족, 복지기능과 같이 생활체육이 가지고 있는 삶의 질 향상을 위한 도구로서의 기능적 가치를 포함하고 있으며 개인의 삶에 긍정적인 영향을 미칠 뿐만 아니라 나아가 사회적 행복수준을 높이는데 기여할 수 있다. 또한, 해양스포츠는 자연을 활용한 직접경험 신체활동으로서 인간이 자연을 이해하는데 중요한 기능을 가지고 있으며 특히, 비현실적 여가활동이 대부분을 차지하고 있는 현대사회의 청소년들에게 올바른 인격을 형성시킬 수 있는 정서 교육적 가치가 높다는 것을 확인할 수 있었다. 이는 해양스포츠가 생활체육이 가지고 있는 다양한 가치 이상의 긍정적 가치들을 내포하고 있으며 생활체육으로서의 충분한 가치가 있음을 의미한다고 할 수 있다.