The 2024 Noto Peninsula Earthquake in Japan caused significant damage to wooden structures due to strong ground motion and widespread liquefaction. This study examines the damage patterns observed in wooden houses and analyzes the underlying structural vulnerabilities that contribute to these patterns. Key findings include standard failure modes such as foundation settlement, soft-story collapse, torsional deformation, and joint failure. The evolution of Japan’s seismic design standards has been reviewed, highlighting the importance of balanced wall distribution, reinforced connections, and lightweight roofing systems. Based on field investigations, this study systematically classifies the types of seismic damage in wood structures. It develops a qualitative performance curve that visually illustrates structural behavior in terms of inclination, seismic damage patterns, and repairability. Furthermore, a seismic damage taxonomy is proposed to infer the causes of damage through logical links between observed failure patterns and structural vulnerabilities. This research establishes a practical foundation for the seismic design and retrofit strategies of wood structures, ultimately contributing to the advancement of earthquake-resilient construction practices.

유리상 고분자 멤브레인은 높은 투과도와 선택도를 동시에 달성하면서도 에너지 소비가 낮아, 고성능 기체 분리 용 멤브레인 후보로 주목받아 왔다. 그러나 기존 고분자 멤브레인은 Robeson 상한선으로 표현되는 투과도-선택도 간의 고유 한 상충관계에 의해 성능이 제한되는 한계를 지닌다. 최근 수년간, 고유 자유부피가 큰 유리상 고분자, 특히 고유 미세다공성 고분자(PIMs) 및 6FDA 기반 폴리이미드와 같은 고성능 재료의 개발이 활발히 이루어지며 이러한 병목 현상을 극복하고 있 다. 고분자 주 사슬 구조 설계, 후 합성 기능화, 고분자 블렌딩, 다공성 필러를 포함한 혼합 매질 멤브레인(mixed-matrix membrane, MMM) 제조, 열재배열 공정 등 다양한 전략을 통해 기체 분리 성능이 크게 향상되었다. 본 총설에서는 유리상 고 분자 기반 기체 분리 멤브레인의 최신 연구 동향을 다룬다. 특히, PIM-1 및 유도체, 6FDA 기반 폴리이미드, MMM을 중심으 로 어떻게 투과도-선택도 상충관계, 물리적 노화, 가소화 저항성과 같은 핵심 기술적 과제를 해결하는지를 다룬다. 최신 문헌 분석을 통해, 유리상 고분자 멤브레인이 기체 분리 성능의 새로운 기준을 제시하고 있으며, 탄소 포집부터 천연가스 처리에 이르기까지 상업적 적용 가능성이 높아지고 있음을 논의한다. 마지막으로, 이러한 멤브레인 기술이 산업적 응용으로 이어지 기 위한 주요 과제와 향후 연구 방향에 대해 고찰한다.

The purpose of this paper is to study how the term “Honmono,” used as a form of hate speech, gained public attention following the release of Makoto Shinkai‘s film “Your Name” (2017) and has affected individuals and society. It also considers the film’s implications in 2023 in relation to Shinkai’s subsequent film “Suzume.” In this study, news articles and online community posts from 2017 were collected and analyzed. In addition, data from Naver Datalab, an online service, and a survey conducted during the popularity of “Suzume” (2023) were utilized. The analysis showed that there were limitations in the“three stages leading to hate speech anddiscrimination“model proposed in earlier research. Accordingly, this paper proposes a revised model better suited to the case of “Honmono.”

This study analyzed the structural performance of a microalgae-based lightweight ecological integration system for large-span structures to achieve carbon neutrality. To address the load problems of existing soil-based ecological systems, a lightweight system utilizing microalgae bioreactors was proposed, and structural performance was evaluated for four types of large-span structures: truss, arch, dome, and cable structures. Structural analysis results through finite element analysis showed that the proposed system achieved a 70% load reduction effect compared to existing systems, with structural performance improvements including 35-40% reduction in maximum deflection, 30-35% reduction in maximum stress, and 25-30% increase in natural frequency. Environmental performance analysis confirmed CO₂absorption capacity of 12-18 kg per m² annually and PM2.5 reduction effects of 15-25%. Economic analysis results indicated that benefits of 3.95-6.7 million KRW per year are generated for a 1,000 m²reference area, creating cumulative benefits of 179.75-227.5 million KRW over 25 years. Verification through the German BIQ House case confirmed CO₂reduction performance of 6 tons per year for 200 m², demonstrating the practical applicability of the system. This study presented the potential of an innovative ecological integration system that can ensure structural safety of large-span structures while simultaneously contributing to carbon neutrality.

This study proposes empirical formulas for predicting the nonlinear behavior of GIR beam-to-column connections in timber structures to evaluate their structural performance. A database comprising 59 experimental results of GIR connections was collected, and the normality of data distribution was verified. Statistical analysis were conducted to investigate the correlations between input and output parameters. Based on input parameters with high correlation, derived variables were formulated and utilized in a multiple regression analysis to develop empirical formulas for moment capacity and rotation. The R-squared values of the proposed formulas exceeded 0.9, and the predicted initial stiffness and strength closely matched those of experimental results not used in the regression analysis. So the suggested empirical formulas exhibit excellent predictive performance for the nonlinear behavior of GIR beam-to-column connections in timber structures.

This study examines the impact of Propeller blade pitch angle mismatch on Noise, thrust, and vibration in light aircraft. Tests were conducted using a simulator with one blade set at increased pitch angles (10°, 12°, 14°) compared to the standard 8°. Results showed that mismatches increased vibration (above 0.26 IPS), Noise levels, and caused operational issues such as fuel leakage and backfire. While thrust initially increased with pitch, it dropped at 14° due to fuel flow instability. These results highlight the need for strict pitch alignment tolerances to ensure optimal performance and safety in aircraft maintenance and operation.

The world's largest diesel power plant listed in the Guinness Book of World Records is Jordan's Amman Asian power plant, which produces a total of 573 MW of electric power. It consists of 38 units of 15MW capacity, and KEPCO achieved high profitability through the power plant. If a large capacity of 50MW clsss is applied, it will be newly listed in the Guinness Book of World Records even if only 12 units are constructed. Therefore, large-scale overseas orders for diesel power plants that require large capacity are expected in the future. The purpose of this study is to derive a installation offset by performing the shaft alignment analysis for large capacity 50MW shaft system. As a result, the offset of shaft system for the 50MW diesel power generation equipment was successfully derived through the bearing influence assessment and introduction of arrangement slope for main engine bearings.

This study was carried out in a cold storage chamber with a floor space of roughly 3.3 square meters (1 pyeong). The findings revealed that the hybrid cooling system consumed a comparable amount of electricity to that of the conventional vapor compression system. This similarity in power usage can be attributed to the hybrid system’s operational strategy: thermoelectric modules were selectively activated during periods of frost accumulation, effectively minimizing the energy typically used for electric defrosting in vapor compression units. To advance the commercialization of this hybrid system in cold storage applications, several technical improvements must be considered in addition to cost optimization. First, the design should address the bulky nature of the heat exchanger setup. At present, the vapor compression and thermoelectric modules are housed in separate outdoor units; a more efficient approach would involve integrating them into a single, space-saving unit. Second, incorporating a water mist spray mechanism for the outdoor heat exchanger coil could enhance heat dissipation. This method, which leverages latent heat exchange, has demonstrated strong performance in other applications and merits further investigation for use in the proposed system.

목적 : 본 연구의 목적은 뇌졸중 환자를 대상으로 한 다양한 근거 수준(Levels of Evidence, Level I~V)의 국내외 실행 증 중재 연구들을 체계적 문헌고찰 방법으로 분석하여, 일반적 특성, 중재 유형, 중재 일정, 평가 도구 등을 종합적으로 정리하고, 임상 현장에서 실행증 중재를 적용하기 위한 근거 기반 자료를 제공하는 것이다. 연구방법 : 체계적 문헌고찰은 PRISMA(Preferred Reporting Items for Systematic Reviews and Meta-Analyses) 지침에 따라 2024년 10월부터 12월까지 국내외 학술지에 게재된 실험연구를 대상으로 수행하였다. 검색에는 CINAHL (Cumulative Index to Nursing and Allied Health Literature), PubMed Central, KISS(Korean studies Information Service System) 등 11개 데이터베이스를 활용하였고, 선정된 문헌은 근거 수준 기준으로 질적 수준을 평가하였다. 결과 : 최종 22편의 연구가 포함되었으며, Level I 연구가 가장 많았고, 대상자의 뇌졸중 후 기간은 1∼6개월 이내가 우 세하게 나타났다. 중재 유형은 전략 훈련과 제스처 훈련이 가장 빈번하였으며, 중재는 평균 5∼8주, 주 3회 이상, 17회기 이상으로 진행되었다. 종속변인은 실행증, ADL(Activities of Daily Living), 운동기능 순으로 많이 평가되었으며, De Renzi Test와 BI(Barthel Index)가 대표 도구로 사용되었다. 또한, 작업수행, 인지, 감정 등 다양한 영역에서의 중재 효 과도 보고되었다. 결론 : 본 연구는 뇌졸중 환자의 실행증 중재를 위해 근거 수준 Level I, III은 물론, 다양한 연구 설계(Level II, IV, V) 에서 제시된 중재 유형, 중재 일정, 평가도구를 종합적으로 고찰하였으며, 이는 임상 적용을 위한 기초자료로 활용될 수 있을 것이다.

본 논문은 아프리카 마다가스카르의 의료 인력 부족과 기본 외과 수술 접근성의 제약 문제를 해결하기 위해 시행된 지구병원 기본 외과 의사 양성 프로그램을 소개한다. 2017년부터 기획되어 2023~2024년 실행된 본 사업은 한국의 정부 및 비정부 기관 (KOICA, AFF, WELL International, 한국누가회 등)과 마다가스카르 보건부 및 국립보건원 (INSPC)의 협력으로 추진되었다. 마다가스카르 정부 소속 현지 공무원 의사 20명을 선발해 2년간 7가지 핵심 외과술기 중심의 훈련을 시행하고, 이후 5년간 비수도권 지구병원에 배치함으로써 약 500만 명의 주민에게 외과 진료 접근성을 제공하였다. 마다가스카르 정부의 급여 지원과 제도화 의지는 이 프로그램의 효과 및 지속 가능성을 보여주는 성과이다. 본 프로그램은 선교적 가치에 기반한 현지인 역량 강화형 의료선교 모델로, 향후 사업의 확대와 유사한 환경의 저개발국에서 적용 가능한 보건의료 인력개발 전략의 하나로서 그 가능성과 의의를 가진다.

This study investigated the vertical displacement behavior caused by differential drying shrinkage in jointed concrete pavements. This study proposed a method to convert this behavior into an equivalent linear temperature difference for structural analysis. Controlled experiments were conducted under varying humidity and airflow conditions to simulate pavement environments. The test results showed that a lower relative humidity and added airflow significantly increased the vertical displacement, particularly at the slab edges. A 3D finite element model using ABAQUS was developed to analyze the behavior and derive the equivalent linear temperature difference that increased with curing age and varied notably with environmental conditions. These findings highlighted the impact of early-age environmental factors on the shrinkage behavior and suggested that the proposed method offered a practical approach for predicting deformation without repeated physical testing.

본 연구에서는 온대산재 및 남양재 원목을 표층재로하고, 금속, 유리섬유, 탄소섬유로 보강한 코르크 보드를 중층에 배열한 코르크 복합 원목마루판 의 치수안정성을 평가하였다. 표층재에 따른 코르크 복합 원목마루판의 평균 흡수율은 백합나무(Tu)가 6.1%로 가장 높은 값을 나타내었고, 티크와 멀바우가 4.7%로 가장 낮은 값을 나타내었으며, 밀도가 낮은 온대산재를 배열한 원목마루판보다 남양재에서 낮은 값을 나타내는 것이 확인되었다. 중층보강재는 CM (cork board-metal) 타입이 CG (cork board-glass fiber) 및 CC (cork board-carbon fiber)타입에 비하여 높은 흡수율을 나타내어 밀도에 따른 흡수량의 차이가 확인되었다. 표층 수종에 따른 흡수두께팽창률은 백합나무가 7.2%로 가장 높은 값을, 티크(T)가 3.9%로 가장 낮은 값을 나타내었다. 전반적으로 금속 보강 원목마루판(CM)의 흡수두께팽창률은 유리섬유(CG)와 탄소섬유(CC)에 비하여 금속이 2–3배 높은 값을 나타내었다. 금속 보강 원목마루판을 제외한 모든 원목마루판은 목질 마루판에 관한 KS 규격 기준을 충족하는 우수한 치수안정성을 나타내는 것이 확인되었다.

본 연구는 학교숲이 환경적·교육적 요소를 종합적으로 고려하여 조성되고 생태전환교육 장으로서의 활용도를 높일 수 있는 방안을 모색하기 위해 수행되었다. 서부 경남 5개 군의 학교숲이 조성된 7개 초등학교를 대상으로 하였다. 녹지 면적은 E학교의 1,289 m2에서 F학교의 4,751 m2까지 다양하게 나타났으며 평균 3,081 m2을 보였다. 상록수와 낙엽수는 각각 45종(39.5%), 69종(60.5%), 교목과 관목은 72종(63.2%), 42종(36.8%), 교목과 관목의 개체수는 978본(17.2%), 4,696본(82.8%)으로 나타났다. 학교숲에 가장 많이 식재된 수종은 영산홍이었으며, 이어 산철쭉, 회양목, 무궁화, 사철나무 순이었다. 종다양성과 균재도는 각각 평균 2.23, 0.62였으며, 학교간 유사도 지수는 0.5 전후의 값을 보였다. 학교숲에 식재된 수종 중 교과서에 언급되는 식물의 일치율은 33.8%인 것으로 나타났다.

Purpose: Despite being preventable, diabetes is a major non-communicable disease with a steadily increasing premature mortality rate. Diabetes can cause various complications if not properly managed; therefore, it is necessary to consistently implement management strategies, such as diet and exercise. However, in reality, there are several difficulties. Among these, a lack of motivation, which is a psychological factor, is a major barrier. Therefore, this study aimed to analyze intervention studies based on motivational and self-determination theories for patients with type 2 DM to seek solutions and present future directions. Methods: We searched and analyzed studies utilizing motivational and self-determination theories from 2013 to 2023 using the PubMed database. Results: One study applied Motivational Theory only, whereas the other two applied self-determination theory only. Most studies have utilized theories other than motivational and self-determination theories. As an intervention method, there were many studies that used group sessions of 4~6 or more times and used communication devices such as cell phones to convey, check, or encourage implementation of the mediation content. Among the quantitative studies, only 10 applied Motivational Theory to measure physiological variables. Nine of these studies tested HbA1c levels and reported effective results. In addition, four studies measured physical activity (three reported that it was effective) and seven studies measured socio-psychological variables, reporting that it improved diabetes knowledge and self-efficacy and reduced depression. Conclusion: According to the results of this study, it is beneficial to develop programs in the future by incorporating theories that have been confirmed to be significant, in addition to motivational and self-determination theories. Furthermore, the newly developed intervention program should be structured to increase implementation by providing four to six small group education sessions and forming networks between educators and subjects, as well as providing continuous management through communication tools such as social media and fostering a solid psychological foundation through religious and spiritual experiences so that patients can actively manage themselves(diet control and exercise management).

총담관 결석은 담낭 결석 환자의 약 10-20%에서 동반되며 폐쇄성 황달, 급성 담관염, 급성 췌장염과 같은 심각한 합병증을 초래할 수 있다. 본 종설은 담낭 절제술이 예정된 환자에서 총담관 결석의 진단과 치료 전략을 종합적으로 고찰하였다. 진단은 병력청취, 혈액 검사, 복부 초음파, 내시경 초음파, 자기공명담췌관조영술 등을 활용해 이루어지며 정확한 진단은 적절한 치료 방침 결정에 필수적이다. 치료 전략은 복강경 담낭절제술과 총담관 탐색을 동시에 시행하는 1단계 접근법과 내시경역행담췌관조영술로 결석을 제거한 후 담낭 절제술을 시행하는 2단계 접근법으로 구분된다. 국내에서는 내시경역행 담췌관조영술 기술의 표준화와 숙련된 내시경 전문의가 갖추어져 있어 2단계 접근법이 주로 선호된다. 총담관 결석 치료는 환자의 상태, 병변 특성, 병원 자원에 따라 치료 방침을 조율해야 하며 내과와 외과의 긴밀한 협력이 중요하다. 향후 이를 뒷받침할 대규모 다기관 연구가 필요하다.

Purpose: This qualitative study aimed to explore and interpret the meaning and essence of end-of-life care as experienced by nurses in internal medicine wards caring for patients who had completed advance directives (AD). It sought to understand the psychological conflicts, ethical dilemmas, and evolving perceptions of care encountered by nurses during the end-of-life process. Additionally, the study focuses on providing foundational data to support the clinical implementation of the AD system, thereby contributing strategies that improve the quality of end-of-life care and uphold patients' rights and dignity in hospital settings. Methods: A qualitative content analysis was conducted using in-depth, semi-structured interviews with 12 nurses from internal medicine wards in tertiary hospitals located in Seoul and surrounding metropolitan areas. Participants had direct experience in providing end-of-life care for patients with ADs. Interviews focused on capturing nurses’ real-life experiences and reflections related to such care. Data were analyzed systematically following the eight-step qualitative content analysis method proposed by Downe and Wamboldt, allowing for the identification of meaningful categories, themes, and patterns. Results: Analysis revealed five major themes and 16 subthemes. The major themes included: (1) Experiences of repeated end-of-life care and advance directives in internal medicine wards, reflecting the frequent encounters of nurses with terminally-ill patients and their ADs; (2) Multifaceted experiences of end-of-life care based on ADs, suggesting the complexities of care shaped by the presence or absence of ADs; (3) Limitations and dilemmas in AD implementation, highlighting the ethical conflicts arising from low public awareness and inconsistent clinical practices; (4) Shifts in perceptions of life and death, including the development of practical attitudes towards death through repeated exposure to dying patients, illustrating the evolving views of nurses; and (5) Hopes for improving end-of-life care in internal medicine wards, emphasizing the need for enhanced care environments, educational support, and institutional backing. Conclusion: The findings underscore the importance of increasing awareness and improving the clinical application of ADs. Establishing systematic support structures is essential to respect patient autonomy and enhance the quality of end-of-life care in internal medicine wards.

This study analyzed the structural characteristics and influencing factors of fish assemblages according to lake size (small, medium, large) based on fish survey data from 90 lakes designated under the National Aquatic Ecosystem Health Monitoring Program in Korea. From surveys conducted between 2022 and 2024, a total of 107 fish species belonging to 32 families were recorded. The dominant species was the bluegill (Lepomis macrochirus, relative abundance [RA]: 21.2%), followed by Hemiculter eigenmanni as the subdominant species (RA: 13.6%). Statistical analysis based on lake size revealed significant differences across eight ecological indicators including species richness, abundance, diversity, evenness, richness, dominance, number of endemic species, and number of exotic species according to lake size. These indicators tended to increase with lake size. While this pattern may be initially attributed to positive factors associated with larger lakes, such as greater habitat heterogeneity and food resource diversity, it is considered that the primary factor influencing these results is the difference in the number of sampling sites per lake. Since sampling sites were designated based on the national water quality monitoring network, they are considered representative of each lake’s environmental conditions. Bray-Curtis similarity and SIMPER analyses identified patterns in assemblage similarity and the key contributing species for each size group. This study provides empirical evidence that demonstrates the influence of lake size on fish assemblage composition and structure and highlights the necessity of incorporating lake size and typology into fish-based assessments of lentic ecosystem health.

This study investigates how lake morphology, water quality, and water-level fluctuations (WLF) collectively shape wetland plant communities across 90 lakes in the Republic of Korea. By analyzing morphological indices (Index of Basin Permanence; IBP, Rawson Index; RI), WLF, water quality, and vegetation data, we identified four distinct lake groups through cluster analysis. Group C, comprising large dams, was characterized by the highest IBP and extreme WLF. Despite having favorable water quality, this group exhibited the lowest species richness, suggesting that severe physical disturbance from WLF is a primary limiting factor for wetland plant community. In contrast, Group A (estuarine reservoirs) showed stable water levels but high nutrient concentrations, which led to eutrophic conditions and communities dominated by a few tolerant species. Group D, which included small agricultural reservoirs and floodplain wetlands, had complex shorelines (highest RI) and supported the higher diversity of aquatic plants. This indicates that habitat heterogeneity can mitigate moderate physical disturbances and enhance richness. Canonical Correspondence Analysis and Variation Partitioning Analysis revealed that community structure is primarily influenced by hydrological disturbance, chemical stress (eutrophication), salinity, and shoreline complexity. These analyses confirmed that the interplay of these environmental factors explains community variation more effectively than any single factor alone. Our findings demonstrate that lake plant communities are shaped by a complex interaction of geomorphological, hydrological, and chemical factors. Therefore, effective lake management must adopt an integrated approach, considering both water-level regulation and shoreline complexity to enhance ecological integrity.

본 연구는 국가문화와 방한 관광객 소비패턴의 연관성을 규명하는 데 그 목적이 있다. 연구 결과, 방한 관광객의 관광소비행동은 국가별로 뚜렷한 차 이를 보였으며, 소비 항목별 지출 비중 등 소비패턴 또한 문화적 특성에 따라 다양하게 나타났다. 그리고 Hofstede의 6개 문화차원과 방한 관광객의 소비패 턴 간의 상관관계를 확인하였으며, Hofstede의 6개 국가문화차원 중 불확실성 회피, 장기지향성, 개인주의, 쾌락추구의 4개 문화차원이 방한 외래관광객들 의 총소비와 세부 소비항목 등 소비패턴에 유의미한 영향을 미치는 것을 확 인하였다. 본 연구는 국가문화와 방한 외래관광객 관광소비행동의 연관성에 대해 실증적으로 확인하였으며, 이를 바탕으로 관광 마케팅, 서비스 설계, 정 책 수립에 있어 문화적 접근의 중요성을 제시하였다.