• 한국농촌간호학회지
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• 제18권2호
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• pp.125-133
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• 2023

Purpose: This study aimed to understand and explore the experiences and meanings of life changes and loneliness caused by the coronavirus disease (COVID-19) among older people living in rural areas. Methods: This study adopted an individual interview approach. A total of 33 older adults were interviewed using semi-structured questions between October and December; 2020. The collected data were analyzed using thematic analysis. Results: Four main themes and ten sub-themes emerged. One main theme was "the never-ending anxiety of a changed world", the second theme was "disconnecting from the world through social distancing", the third theme was "working to overcome COVID-19", and forth "health is the most important thing in life." Conclusion: Based on the results of this study, we confirmed the urgent need for psycho-social support to relieve loneliness and social isolation of older people in rural areas during the spread of infectious diseases.

• Food Science and Biotechnology
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• 제17권1호
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• pp.135-143
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• 2008

The ratio between 11S Sand 7S globulins was greater in large seed size varieties (LSSVs) of soybean than in small seed size varieties (SSSVs) or medium seed size varieties (MSSVs) but did not differ between MSSVs and SSSVs. The cysteine and methionine contents of 11S globulins were greater than those of total seed proteins and 7S globulins. The acidic monoamino monocarboxylic amino acids were the most abundant class of amino acid in soybean seed (27.2%) and soybean curd protein (29.3%). Isolated 7S and 11S fractions were analyzed by HPLC. Of the 12 peaks detected, 4 constituted 64.1% of the proteins of the SSSVs, 65.6% of the proteins of the MSSVs, and 70.5% of the proteins of the LSSVs. The 11S/7S globulin ratio was related to the yield and hardness of soybean curd. The MSSVs had the greatest yield of soybean curd, but the soybean curd hardness of the MSSVs was greater than that of the SSSVs. These results show that the 11S/7S ratio and color of soybean seeds can be used to predict the yield, hardness, and color of soybean curd.

• 농촌지도와개발
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• 제27권3호
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• pp.111-124
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• 2020

This study begins with an interest in community capacity, the basis for mobilizing community action and the driving force of community development. The study aims to identify the structural equation model of community capacity, social participation, satisfaction in life, and the impact relationship and to verify the differences between urban and rural areas. The analysis data used the 2018Korean Social Integration Survey, which is the statistical data for national approval. The analysis method was performed by using SPSS was used to perform descriptive analysis and t-test, and the structural equation model. Multi-group analysis of AMOS was also performed to verify the research model. As the result of analysis, both the condition and status of community capacity and social participation, which are products of community capacity, showed a higher average of rural areas than urban areas. As a result of the analysis of the structural equation model between community capacity, social participation, and life satisfaction, differences between rural and urban groups were identified. In rural areas, both the capacity-condition and the capacity-status variables act as positive factors for social participation and life satisfaction, but in urban areas, the path of capacity-condition, social participation, capacity-status and life satisfaction was significant. On the other hand, social participation variables acted as a factor of direct and indirect negatively influence on life satisfaction. Therefore, it can be said that the quality of community capacity in rural areas is superior to that of urban areas.

• 한국융합학회논문지
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• 제11권5호
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• pp.317-325
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• 2020

본 연구는 농촌지역 중·노년층 주민의 주관적 건강상태와 삶의 질과의 관계를 파악하고, 주관적 건강상태와 삶의 질과의 관계에서 우울의 매개효과를 확인하여 농촌지역 중·노년층 주민의 삶의 질 향상을 위한 방안을 모색하고자 시도 되었다. A군의 40세 이상 주민 235명의 주관적 건강상태, 우울, 삶의 질을 측정하여 분석하였고 매개효과의 통계적 유의성은 Sobel test로 검증하였다. 대상자의 주관적 건강상태는 삶의 질과 정적 상관관계가 있었으며 우울은 주관적 건강상태, 삶의 질의 신체적 건강지수와 정신적 건강지수 모두에서 부적 상관관계가 있었다. 주관적 건강상태와 우울은 농촌지역 중·노년층 주민의 삶의 질을 결정짓는 중요한 요인이며, 주관적 건강상태와 삶의 질의 관계에서 우울은 삶의 질에 매개효과가 있는 것으로 나타났다. 이러한 결과를 바탕으로 농촌지역 중노년층 주민의 삶의 질 향상을 위해 주관적 건강상태 개선 및 우울 경감을 위한 다양한 프로그램 개발 및 운영이 요구된다.

• 한국콘텐츠학회논문지
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• 제17권5호
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• pp.633-641
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• 2017

이 연구는 급속한 디지털 미디어 발달과 한국사회의 디지털 격차(digital divide) 현상에 주목하여, 개인의 사회경제적 지위에 따른 디지털 격차와 삶의 만족도에 대해 세대별, 도시-농촌간 비교 연구를 진행하였다. 정보통신정책연구원의 <한국미디어패널>조사 데이터를 기반으로 전국 규모의 9,647개 샘플 데이터를 토대로 사회경제적 지위가 디지털 격차와, 삶의 만족도에 미치는 영향에 대해 종합적으로 비교 분석하였다. 연구결과, 개인의 사회경제적 지위는 디지털 격차와 삶의 만족도에 각각 유의미한 영향을 미쳤으며, 세대별로 구분하였을 경우, 2030연령대가 디지털 활용과 삶의 만족도 등 모든 항목에서 가장 높은 수치를 보였으며, 60대 이상 연령층이 가장 낮은 수치를 보였다. 또한, 디지털 활용은 모든 계층에 있어서 도시거주자들이 높은 수치를 보였지만, 삶의 만족도는 하위계층과 중위 계층에서는 농촌지역이, 상위계층에서는 도시지역이 더 높이 나왔다. 이 연구는 초연결사회로 진행되어 가는 한국 사회에서 여전히 해소되지 못하고 있는 디지털 형평의 문제를 사회경제적지위와 도시-농촌 간 비교를 통해 재확인하면서 궁극적으로 문제해결을 위한 단서를 제공하고 있다는 점에서 의미가 있다.

• 한국노년학
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• 제31권2호
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• pp.419-437
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• 2011

본 연구는 농촌지역과 도시지역 노인의 생산적 활동과 생활만족도간의 관계를 분석하는데 있다. 생산적 활동 중 경제적 활동과 보살핌노동활동은 부적 인과관계를 나타낸 반면 사회참여활동은 정적 관계가 있었다. 이러한 결과는 생산적 활동 개념이 다차원적인 개념으로 생활만족도에 있어 단일차원성을 확보하지 못함을 의미한다. 또한, Chow 검증한 결과 농촌지역과 도시지역의 노인의 생활만족도를 설명하는 계수의 구조가 다른 것으로 분석되었는데, 농촌지역과 도시지역의 생활만족도의 설명 요인의 차이에 대해 삶의 만족을 가져다 줄 수 있는 심리적 요인이 도농의 문화적 차이로 인한 결과로 해석하였다. 발견점은 노인들은 단체를 통한 자원봉사 활동 보다 개별적인 자원봉사가 생활만족도에 직접적으로 영향을 미치는 것으로 나타났다. 끝으로 본 연구의 한계점을 밝히고 후속 연구를 위한 제언을 제시하였다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2007년도 6th OSONG INTERNATIONAL BIO-SYMPOSIUM
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• pp.241.1-241.1
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• 2007

• 국제학술발표논문집
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• The 10th International Conference on Construction Engineering and Project Management
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• pp.1321-1321
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• 2024

Concrete arch dams, unlike conventional concrete gravity dams, have thin arch-shaped cross sections and must be designed considering a three-dimensional shape. In particular, double-curvature arch dams, which have arch-shaped vertical and horizontal sections, require careful consideration during design due to their unique shape. Although stress analysis is complex, and various factors need to be considered during the design, these dams offer economic advantages as they require less material. Consequently, numerous double-curvature arch dams have been constructed worldwide, and ongoing research focuses on optimizing their shapes. In this study, an efficient optimization algorithm was developed for the shape optimization of concrete arch dams with double-curvature using genetic algorithms and improved population initializing technique. The developed technique utilized domain knowledge in the field of arch dams to generate an excellent initial population. To assess the relevance of domain knowledge, an investigation was conducted on the accumulated knowledge and empirical formulas from literature. Two pieces of domain knowledge can be gleaned from the iterative structural design experiences associated with arch dams. First, it concerns the thickness of the central cantilever of an arch dam. For minimum tensile stress, it is best to make the thickness as thin as possible at the dam crest and gradually become thicker as it goes down. The second aspect concerns the sliding stability of the arch dam, which depends on the central angle of the horizontal section. This angel is important for stability because the plane arch serves to transfer the hydraulic load from the reservoir to both abutments. Also, preliminary design formulas for arch dams from a manual written by the United States Bureau of Reclamation (USBR) were used. On the other hand, since domain knowledge is based on engineering experiences and data from existing dams, its usability should be verified by comparing it with the results of design optimization performed by classic genetic algorithms. To validate the performance of the optimization algorithm with the improved population initialization technique, a test site with an existing dam was selected, and algorithmic application tests were conducted. Stress analysis is performed for each design iteration, evaluating constraints and calculating fitness as the objective function. The results confirmed that the algorithm developed in this study exhibits superior performance in terms of average fitness and convergence rate compared to classic genetic algorithms.

• 국제학술발표논문집
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• The 10th International Conference on Construction Engineering and Project Management
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• pp.1322-1322
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• 2024

Reinforced concrete (RC) , a major contributor to resource depletion and harmful emissions, fuels research on optimizing its design. Optimizing RC structures is challenging due to the mix of discrete and continuous variables, hindering traditional differentiation-based methods. Thus, this study aims to optimize RC structures cost-effectively using deep reinforcement learning. When the Agent selects design variables, Environment checks design criteria based on KDS 14-20 code (South Korea) and calculates reward. The Agent updates its Neural Network with this reward. Target for optimization is a simply supported doubly RC beam, with design variables including cross-section dimensions, sizes and quantities of tension and compression reinforcement, and size of stirrups. We used 200,000 training sets and 336 test sets, each with live load, dead load, beam length variables. To exclude labeled data, multiple training iterations were conducted. In the initial training, the reward was the ratio of maximum possible cost at beam length to the designed structure's cost. Next iterations used the ratio of optimal values by the previous Agent to the current Agent as the reward. Training ended when the difference between optimal values from the previous and current Agent was within 1% for test data. Brute Force Algorithm was applied to the test set to calculate the actual cost-optimal design for validation. Results showed within 10% difference from actual optimal cost, indicating successful deep reinforcement learning application without labeled data. This study benefits the rapid and accurate calculation of optimized designs and construction processes in Building Information Modeling (BIM) applications.

• 한국농촌건축학회논문집
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• 제6권1호
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• pp.32-41
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• 2004

Many administrative policies for regional activation have progressed the expansion and improvement of convenience institutions. Most appraisals about rural community influenced by urban life convenience are affirmative, but chasing urban life convenience is a cause of breaking out regional identity. Recently, new rising methods of theme and characteristic to imply regional identity, are ways of regional activation through neighboring network around satellite of rural community. In this study, I research and suggest applicable possible proposal of rural communities in Korea. by survey of neighboring network methods of Asan Live Museum in Japan applied ecomuseum concept for regional activation.