• 농업과학연구
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• 제50권4호
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• pp.617-628
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• 2023

This study aimed to evaluate the engine load factor (LF) of a 90 kW agricultural combine harvester. The combine harvester used in this study is equipped with an electronic engine, and real-time engine data (torque and speed) was collected through a controller area network. The speed of the combine harvester during harvesting operation was divided into three levels (4, 5, and 6 km/h) for the representative operation speed range of 4 to 6 km/h. The LF was calculated using the engine load data measured in real time during harvesting. A weight was applied to the LF for each condition based on a survey of the usage. Results of the field test showed that the LF was 0.53, 0.64, and 0.87 at working speeds of 4, 5, and 6 km/h, respectively. The highest engine load factor was recorded at 6 km/h. Finally, based on the weight for the usage applied, the integrated engine LF was analyzed to be 0.69, which is approximately 144% higher than the currently applied LF of 0.48. A study on LF analysis for the entire work cycle, including idling and driving of the combine harvester, will be addressed in a future study.

• 한국의류학회지
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• 제29권3_4호
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• pp.462-469
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• 2005

This study was inquiry into wearing condition and satisfaction of Saenghwal Hanbok uniform for Korean restaurant's employees. For this Purpose to be fulfilled survey was carried out to the managers and employees who are working in Korean traditional restaurants located in Seoul, and the reality of wearing Saenghwal Hanbok uniforms and the employees's satisfaction were considered. It taken into consideration when designing Hanbok uniforms for Korean traditional restaurants. The analysis was executed involving Simple Analysis, Correlation Analysis, Independent Samples T-test, Paired Comparison, ANOVA, and Duncun Test using SPSS. The report shows that buyers get two pieces style of skirt ($74\%$) and they are buying from Hanbok shops ($58\%$), or from uniform shops ($21\%$). It is almost impossible to see that employees' opinion is reflected in the uniform design since the decisions are made by either Senior manager or General Manager. Based on the result of this survey, followings should be taken into consideration when designing Hanbok uniforms for Korean traditional restaurants. Firstly, a design should reflect a sphere and a radiuses of action throughout a grasp of the type of restaurant, such as the type of sitting and whether there are stairs or not, and the type of service in charge, and so on. Secondly, considerations on the fabrics in terms of sweat absorption, tactility, weight and so on should be prioritized emphasizing a functional aspect. Thirdly, a sleeve should be narrower and shorter, and the skirt should be less wide and not crease easily. Lastly, a Geogori should be knot-button on with care in order not to be opened and a skirt should be zipped up.

• 한국콘텐츠학회논문지
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• 제13권12호
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• pp.291-298
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• 2013

본 연구는 수술실 간호사의 업무스트레스와 피로와의 관계를 규명하기 위한 횡단적 서술적 조사연구이다. 연구대상은 G시와 C도에 소재한 2개 상급종합병원과 5개 종합병원의 수술실 간호사 124명이었고 설문지를 이용하여 자료를 수집하였다. 수집된 자료는 기술통계, t-test, ANOVA, Pearson's correlation으로 분석하였다. 연구 결과 수술실 간호사의 업무스트레스는 3.64(0.45)점, 피로 점수는 3.46(0.60)점이었다. 수술실 간호사의 업무스트레스는 병원 종류에 따라서 통계적으로 유의한 차이가 있었고, 수술실 간호사의 피로 정도는 병원 종류, 근무배경, 주관적 건강상태에 따라서 통계적으로 유의한 차이를 보였으며, 수술실 간호사의 피로는 업무스트레스와 통계적으로 유의한 순상관관계가 있었다(r=0.47, p=<.001). 그러므로 본 연구는 수술실 간호사의 업무스트레스와 피로의 관련성을 파악한 점에서 의의를 지니며, 향후 수술실 간호사를 위한 업무스트레스 중재프로그램의 개발에 있어 기초자료가 될 것으로 기대한다.

• 한국지반신소재학회논문집
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• 제15권4호
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• pp.79-88
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• 2016

경주시에서는 신라시대에 건설된 교량 월정교에 대한 복원사업이 진행되고 있다. 월정교는 760년에 건설되어 고려시대인 1280년에 중수한 기록이 남아있다. 따라서 월정교는 적어도 520년 이상 교량으로 사용되었음을 알 수 있다. 복원사업이 시작되기 전에 월정교는 양측 교대의 일부와 4개의 교각기초 그리고 한 단 내지 두 단의 교각석이 남아있었다. 월정교 복원공사에 앞서, 복원에 사용할 석재의 종류를 결정하기 위하여, 월정교에 사용된 석재유구의 산지를 추정하기 위한 연구를 수행하였다. 월정교석재 유구에 대한 암석학적 조사와 경주시 일원 지질에 대한 현장조사를 실시하였다. 연구결과, 월정교 건설 당시 사용된 석재로는 경주일원의 대표적인 화강암인 남산화강암이 주로 사용되었음을 확인하였다. 특히, 경주 남산의 동측사면 하부에 위치한 통일전과 탑곡 일원에 넓게 분포하고 있는 토르나 핵석이 월정교 축조에 주로 사용되었을 가능성이 높은 것으로 조사되었다.

• 센서학회지
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• 제13권3호
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• pp.182-187
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• 2004

The fluorinated amorphous carbon thin films (a-C:F) were deposited by PECVD(plasma enhanced chemical vapor deposition). The precursors were $C_{4}F_{8}$ which had a similar ratio of target film's carbon to fluorine ratio, and $Si_{2}H_{6}$/He for capturing excessive fluorine ion. We varied deposition condition of temperature and working pressure to survey the effect of each changes. We measured dielectric constant, composition, and etc. At low temperature the film adhesion to substrate was very poor although the growth rate was very high, the growth rate was very low at high temperature. The EDS(energy dispersive spectroscopy) result showed carbon and fluorine peak for films and Si peak for substrate. There was no oxygen peak.

• 보건교육건강증진학회지
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• 제24권2호
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• pp.63-75
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• 2007

Purpose: The research was performed to provide basic information and bring importance to people's attention based upon seizing relation between employees's life patterns and health conditions in their daily lives. Method: This study was done from October 9th, 2006 to 27th and targeted on people who work more than 1 year in Seoul and Kyung-gi area including 700 people; 350 of males, 350 of females. In the experiment, there are 8 measurable variables which are weight, smoking, drinking, exercise, sleeping, having breakfast, regular time for meal and having snack. The survey questionnaire used THI. The collected data was analyzed using t-test, one way ANOVA, Pearson correlation coefficient and Multiple regression with SPSS/PC. Results: 1) It showed different data based on general traits such as gender, age, marriage, job and working time. 2) It also displayed different data in physical, mental and total health conditions depending on general traits. 3) The rate of symptom appeal was noticeably low as the body condition is in a good shape. 4) It exhibited that the variables for the rate of symptom appeal was negatively related to both male and female. 5) The variables affected to health conditions were age, exercise, having snack, sleeping, time for meal and smoking for male and weight, sleeping and time for meal for female. Conclusion: It is shown that if a person has a good life patterns in his/her daily life, he/she has a low rate of symptom appeal, which means he/she has better both physical and mental conditions.

• 한국화재소방학회논문지
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• 제25권6호
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• pp.98-103
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• 2011

현재 국내 건축물은 일반주택, 빌라 등을 제외한 대부분 건물에 소방시설을 적용하고 있다. 그러나 소방시설의 활용은 이천물류창고 화재, 코리아 냉동 창고 화재, 대구지하철 참사와 최근 부산의 고층 오피스텔 화재 등에서 나타낸 문제점과 같이 제대로 작동하지 못함으로서 인명과 재산피해 등이 지속적으로 발생되고 있다. 본 연구에서는 소방시설 중 가장 널리 사용되고 초기 화재에 중요하게 사용되는 자동화재탐지설비, 비상경보설비, 피난설비, 옥내소화전의 관리 실태를 파악하고 이에 대한 문제점을 데이터화하여 실제 화재시 소방시설의 적극적인 활용을 위한 해결점을 찾고자 한다.

• Safety and Health at Work
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• 제8권4호
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• pp.371-377
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• 2017

Background: Social status might be a determinant of occupational health inequalities. This study analyzed the effects of social status on both work environments and health outcomes. Methods: The study sample consisted of 27,598 wage employees aged 15 years and older from among the Korean Working Condition Survey participants in 2011. Work environments included atypical work, physical risks, ergonomic risks, work demands, work autonomy, social supports, and job rewards. Health outcomes comprised general health, health and safety at risk because of work, the World Health Organization-5 Well-being Index, work-related musculoskeletal disease, and work-related injury. Multivariable logistic-regression models were used to identify the associations between social status and work environments and health outcomes. Results: Employees in the demographically vulnerable group had lower occupational status compared with their counterparts. Low social status was largely related to adverse work environments. Especially, precarious employment and manual labor occupation were associated with both adverse work environments and poor health outcomes. Conclusion: Precarious and manual workers should take precedence in occupational health equity policies and interventions. Their cumulative vulnerability, which is connected to demographics, occupational status, adverse work environments, or poor health outcomes, can be improved through a multilevel approach such as labor market, organizations, and individual goals.

• The Journal of Asian Finance, Economics and Business
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• 제9권5호
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• pp.397-407
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• 2022

The informal economy is a large part of the urban economy. The informal economy accounts for about half of Pakistan's GDP. This research examined nine different areas of Rawalpindi's Central Business District's business sector (CBD). A survey of 404 respondents from 16 CBD marketplaces enables a comprehensive examination of who works in the informal and formal economic sectors, how much they earn, their goals, perception of their job, and their degree of similarity to the rest of the working population. Furthermore, the statistics illustrate the pro-cyclical connections between the informal economic sector and the formal economy. The Multinomial Logistic Regression (MLR) technique is used for the analysis. The MLR results indicated the informal economic sector holds positive relation with earning members in a family, business expertise, average business sale, and negative relation with education level, satisfaction with government tax policies, household expense, and average investment in the business. From a resilience standpoint, governance is considered an intentional collective action to preserve a stable system condition. Hence, the current study recommends tax reforms and government institution reorganization to mobilize the informal sector and make effective institutional governance.

• 한국콘텐츠학회논문지
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• 제17권3호
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• pp.337-349
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• 2017

본 연구는 근로자의 암에 대한 지식, 태도 및 예방적 건강행위 정도를 확인하고, 암 예방적 건강행위에 영향을 미치는 요인을 파악함으로써 근로자의 건강증진을 위한 표준화된 암 예방 프로그램에 기초자료를 제공하고자 한다. 연구대상은 일개 사업장의 5개 지역, 9개 공장에 근무 중인 근로자 723명이고 자료는 SPSS/WIN 20.0 프로그램을 이용하여 분석하였다. 연구결과, 암에 대한 지식의 평균 점수는 $10.52{\pm}4.02$(범위: 0~30)였고, 암에 대한 태도의 평균 점수는 $31.61{\pm}3.51$(범위: 10~50)였고, 암에 대한 예방적 건강행위의 평균 점수는 $62.37{\pm}9.05$(범위: 19~95)였다. 지각하는 건강상태, 암에 대한 태도, 흡연, 연령, 음주, 운동, 하루근무시간과 같은 변수가 암에 대한 예방적 건강행위를 40.3% 설명하는 것으로 나타났다. 본 연구 결과를 근거로 사업장 근로자의 상황에 적합한 암 예방적 건강행위 증진 프로그램 개발에 이용될 수 있을 것으로 기대된다.