• 한국재난정보학회 논문집
• /
• 제14권4호
• /
• pp.409-420
• /
• 2018

연구목적: 본 연구는 실내 외 임시주거시설의 사례분석을 통해 실용성 향상을 위한 개선방안을 제시하는 것을 목적으로 한다. 연구방법: 첫째 선행연구 분석을 통해 실내 외 임시주거시설의 기본적인 성능, 형태에 대해 고찰하였다. 둘째 실내 외 임시주거시설의 사례분석을 통해 실용성측면의 문제점을 도출하였다. 셋째 도출된 문제점을 바탕으로 실내 외 임시주거시설의 실용성을 확보하기 위한 개선방안을 제시하였다. 연구결과: 실내 외 임시주거시설에서 궁극적으로 개선해야 할 거주성, 경제성, 시공성, 운용방안이라는 요소를 도출하였고 이를 생애주기에 따른 제작단계, 운반단계, 설치단계, 보관단계로 구분하여 각각의 단계에서 실용성 향상을 위해 개선해야 할 사항을 제시하였다. 결론: 본 연구를 통해 제시한 개선사항을 적용한다면 실용성이 향상된 실내 외 임시주거시설의 개발에 도움이 될 것으로 사료된다.

• The Journal of Asian Finance, Economics and Business
• /
• 제8권3호
• /
• pp.297-305
• /
• 2021

A contractor or a main contractor is a company with full capacity to construct all project's works for the owner. A subcontractor is an organization that works with the main contractor to execute and complete work packages for the project. Selecting an effective subcontractor will help the efficiency and success of any projects in the construction industry. Therefore, this study identified subcontractor evaluation factors in Vietnam by collecting questionnaire survey data from engineers and staffs in the construction industry project environment. An exploratory factor analysis (EFA) was then performed to identify the critical factors when evaluating and selecting the subcontractor in construction projects. Moreover, when considering the impact level in terms of the average value, the research results showed that the most critical concern was the subcontractor's reputation. Furthermore, the top five factors affecting the sub-contractor evaluation and selection are (i) reputation, (ii) price, (iii) construction techniques, (iv) ability to implement projects according to commitments, and (v) subcontractor competence (the team of workers, technician staff, engineers with full capacity according to regulations). These research results provide an overall perspective that will help main contractors develop suitable subcontractors' evaluation and selection factors in their projects in the construction industry.

• 한국구조물진단유지관리공학회 논문집
• /
• 제25권2호
• /
• pp.43-48
• /
• 2021

프리캐스트 콘크리트는 일반적으로 건설 기간을 줄이고 시공 능력을 향상시키는 데 주로 사용되고 있다. 그러나 분할 과정에서 원래 구조 시스템과 다른 경계 조건과 구조적 거동을 적용하여 구조적 문제가 발생할 수도 있다. 이 연구에서는 시공 후 휨모멘트 및 크리프 증가로 인해 처짐과 균열이 발생한 프리캐스트 콘크리트 슬래브를 대상으로 검토하였으며, 이는 프리캐스트 콘크리트 슬래브의 지지 조건 및 구조거동에 대한 잘못된 적용에서 비롯된 것임을 알 수 있었다. 프리캐스트 콘크리트 슬래브 하부에 2 개의 지지대를 삽입하여 휨모멘트를 줄이고 보강 작업시 구조적 안전성을 확보하기 위해 잭킹력에 따른 캠버를 추정해야 한다. 따라서 기존 구조물의 처짐 및 균열을 확인하기 위해 역 해석을 통해 프리캐스트 콘크리트 슬래브의 다양한 지지 조건과 휨강성을 고려하였으며, 프리캐스트 콘크리트 슬래브의 잭킹력에 따라 캠버를 추정하고 안전한 구조물을 만드는 보강방법을 제안하였다.

• 창의정보문화연구
• /
• 제7권3호
• /
• pp.117-128
• /
• 2021

이 연구는 중고등학생들의 비대면 수업적응력을 알아보고자 하는 검사 도구를 개발하는 데 목적을 두고 있다. 연구대상은 충북지역 중고등학교 4개교 학생들을 대상으로 2개월에 걸쳐 이루어졌다. 추출 결과, 도구 활용, 책임감, 집중력, 자신감, 적응력, 협력성의 6개 요인 24문항의 비대면 수업적응력 검사지가 만들어졌다. 검사의 양호도 분석 결과는 다음과 같다. 첫째, 문항 내적 일관성의 신뢰도 계수는 전체 Chronbach's α는 .888로 나타났으며, 영역별 신뢰도 범위는 .621~.854로 나타나 충분히 신뢰할 수 있다. 둘째, 확인적 요인분석에 의한 구인타당도 검증 결과는 CFA 모델에서 절대적합도 지수인 RMSEA=.0108, SRMR=.0794로 양호한 범주에 들고 있어 각 영역에 속하는 문항들이 중고등학생들의 비대면 수업적응력을 알아보고자 하는 특성을 적절하게 포함하고 있는 것을 확인해 주었다.

• Safety and Health at Work
• /
• 제11권4호
• /
• pp.526-532
• /
• 2020

Background: The high incidence of work-related diseases and injuries among day-laborers and workers with no legal contracts (informal workers) has received the attention of the Thai authorities. Workers' low occupational health literacy (OHL) has been reasoned as one contributing factor. Absence of a valid tool has prevented assessment of informal workers' OHL. The aim of this study was to create a valid and reliable Occupational Health Literacy Scale within the context of Thai working culture (TOHLS-IF). Methods: This study used the mixed method approach to develop TOHLS-IF. Questions were generated using in-depth interviews and an extensive review of the literature. Experts' assessment confirmed the content validity of TOHLS-IF. The scales of its psychometric properties were assessed in a sample of 400 informal workers using cluster random sampling. Results: The final version of the TOHLS-IF comprises 38 items within 4 dimensions: Ability to Gain Access, Understanding, Evaluation, and Use of occupational health and safety information. Factor analysis identified items explaining 50.22% of the total variance. The final confirmatory analysis confirmed the model estimates were satisfactory for the construct. TOHLS-IF demonstrated a high internal consistency and satisfactory reliability (Cronbach's alpha = .98). Conclusion: The TOHLS-IF is a valid and reliable instrument to assess informal workers' OHL. The structural dimensions of this instrument are based on the concept of health literacy and Thai culture. Thai health professionals are encouraged to benefit from this instrument to assess their workers' OHL and apply findings as guidelines for effective occupational health and safety interventions.

• Journal of Ginseng Research
• /
• 제47권2호
• /
• pp.228-236
• /
• 2023

Background: QiShen YiQi pills (QSYQ) is a Traditional Chinese Medicine (TCM) formula, which has a significant effect on the treatment of patients with myocardial infarction (MI) in clinical practice. However, the molecular mechanism of QSYQ regulation pyroptosis after MI is still not fully known. Hence, this study was designed to reveal the mechanism of the active ingredient in QSYQ. Methods: Integrated approach of network pharmacology and molecular docking, were conducted to screen active components and corresponding common target genes of QSYQ in intervening pyroptosis after MI. Subsequently, STRING and Cytoscape were applied to construct a PPI network, and obtain candidate active compounds. Molecular docking was performed to verify the binding ability of candidate components to pyroptosis proteins and oxygen-glucose deprivation (OGD) induced cardiomyocytes injuries were applied to explore the protective effect and mechanism of the candidate drug. Results: Two drug-likeness compounds were preliminarily selected, and the binding capacity between Ginsenoside Rh2 (Rh2) and key target High Mobility Group Box 1 (HMGB1)was validated in the form of hydrogen bonding. 2 μM Rh2 prevented OGD-induced H9c2 death and reduced IL-18 and IL-1β levels, possibly by decreasing the activation of the NLRP3 inflammasome, inhibiting the expression of p12-caspase1, and attenuating the level of pyroptosis executive protein GSDMD-N. Conclusions: We propose that Rh2 of QSYQ can protect myocardial cells partially by ameliorating pyroptosis, which seems to have a new insight regarding the therapeutic potential for MI.

• Asian Journal of Business Environment
• /
• 제13권2호
• /
• pp.9-20
• /
• 2023

Purpose: This study aims to map the spatial distribution of poverty using nighttime light satellite images as a proxy indicator of economic activities and infrastructure distribution in D.I Yogyakarta, Indonesia. Research design, data, and methodology: This study uses official poverty statistics (National Socio-economic Survey (SUSENAS) and Poverty Database 2015) to compare satellite imagery's ability to identify poor urban areas in D.I Yogyakarta. National Socioeconomic Survey (SUSENAS), as poverty statistics at the macro level, uses expenditure to determine the poor in a region. Poverty Database 2015 (BDT 2015), as poverty statistics at the micro-level, uses asset ownership to determine the poor population in an area. Pearson correlation is used to identify the correlation among variables and construct a Support Vector Regression (SVR) model to estimate the poverty level at a granular level of 1 km x 1 km. Results: It is found that macro poverty level and moderate annual nighttime light intensity have a Pearson correlation of 74 percent. It is more significant than micro poverty, with the Pearson correlation being 49 percent in 2015. The SVR prediction model can achieve the root mean squared error (RMSE) of up to 8.48 percent on SUSENAS 2020 poverty data.Conclusion: Nighttime light satellite imagery data has potential benefits as alternative data to support regional poverty mapping, especially in urban areas. Using satellite imagery data is better at predicting regional poverty based on expenditure than asset ownership at the micro-level. Light intensity at night can better describe the use of electricity consumption for economic activities at night, which is captured in spending on electricity financing compared to asset ownership.

• Journal of Preventive Medicine and Public Health
• /
• 제56권1호
• /
• pp.41-49
• /
• 2023

Objectives: Rwanda reported a stunting rate of 33% in 2020, decreasing from 38% in 2015; however, stunting remains an issue. Globally, child deaths from malnutrition stand at 45%. The best options for the early detection and treatment of stunting should be made a community policy priority, and health services remain an issue. Hence, this research aimed to develop a model for predicting stunting in Rwandan children. Methods: The Rwanda Demographic and Health Survey 2019-2020 was used as secondary data. Stratified 10-fold cross-validation was used, and different machine learning classifiers were trained to predict stunting status. The prediction models were compared using different metrics, and the best model was chosen. Results: The best model was developed with the gradient boosting classifier algorithm, with a training accuracy of 80.49% based on the performance indicators of several models. Based on a confusion matrix, the test accuracy, sensitivity, specificity, and F1 were calculated, yielding the model's ability to classify stunting cases correctly at 79.33%, identify stunted children accurately at 72.51%, and categorize non-stunted children correctly at 94.49%, with an area under the curve of 0.89. The model found that the mother's height, television, the child's age, province, mother's education, birth weight, and childbirth size were the most important predictors of stunting status. Conclusions: Therefore, machine-learning techniques may be used in Rwanda to construct an accurate model that can detect the early stages of stunting and offer the best predictive attributes to help prevent and control stunting in under five Rwandan children.

• 한국지반공학회논문집
• /
• 제39권5호
• /
• pp.41-50
• /
• 2023

본 연구에서는 국내외에서 널리 사용되고 있는 액상화 보강 및 지반 보강 공법들에 대해 공법 특성별로 검토하고, 각 보강방안의 경제성 및 보강효과를 분석하였다. 또한 분석 결과를 바탕으로 신설구조물 및 기존구조물의 액상화 보강시 적절한 보강 방안 적용성 평가를 수행하였다. 보강방안 별 경제성, 보강효과를 바탕으로 보강 방안의 적용성을 평가한 결과, 신설 구조물의 보강시에는 대형장비를 적용하여 시공성이 확보되는 다짐계열 공법이 유리하며, 기존 구조물에서는 저유동성 몰탈 주입공법(C.G.S공법) 및 고압분사공법(J.S.P공법)의 적용이 적절할 것으로 판단된다.

• 한국노년학
• /
• 제29권3호
• /
• pp.1141-1158
• /
• 2009

본 연구에서는 한국 문화 속의 노인들이 경험하는 행복 요인을 알아보고자 하였다. 이를 위해 연구 1에서는 서울과 지방에 거주하는 노인 105명으로부터 그들을 행복하게 하는 요인이 무엇인지 그리고 그 요인이 왜 그들의 행복요인이라고 생각하는지를 개방형 질문을 이용하여 알아보았다. 연구 2에서는 행복을 측정하는 양적 척도를 개발하기 위해서, 우선 연구 1에서 얻은 내용을 기초로 70개의 문항을 구성하였다. 이것을 서울과 지방에 거주하는 노인에게 설문을 실시하였고 최종 200명의 응답을 이용하여 요인분석을 실시하였다. 그 결과, 최종 8요인 33문항으로 요약되었다. 8개의 요인은 ①가족관계, ②종교, ③경제, ④건강, ⑤일과 직장, ⑥심리적 안정감, ⑦여가, ⑧복지 순으로 명명하였다. 또한 요인분석에서 얻어진 최종 33문항들을 삶의 만족도 척도와 정서 경험 빈도 척도, 그리고 자아 존중감 척도를 사용해 수렴타당도를 알아 본 결과 수용할만한 수준의 타당도와 신뢰도를 나타내었다. 본 연구의 의의와 제한점, 그리고 후속연구에 대한 제언에 대해 논의하였다.