본 연구는 우리나라 스마트농업 맥락에서 전통적인 흙 논둑의 구조적 한계와 개선 가능성, 그리고 준영구 논둑의 적용성을 검토하였다. 이를 위해 8개 지역의 농민과 지자체 공무원 83명을 대상으로 관리 현황, 비용, 인식에 관한 설문조사를 수행하였다. 분석 결과, 흙 논둑은 친환경적이라는 장점에도 불구하고 누수·붕괴, 제초 및 보수의 높은 노동 의존성 등 반복적 문제가 확인되었다. 반면 준영구 콘크리트 논둑은 관리 빈도, 운영비용, 누수 위험을 크게 줄였으나, 배수 유연성과 환경적 영향에 대한 우려가 남아 있었다. 지역별 단가 분석에서는 공법과 지형 조건에 따른 차이가 나타났으며, 설문조사 결과 다수의 응답자가 노동력 부족 대응 및 생산 안정성 제고 수단으로 준영구 논둑 도입을 지지하였다. 스마트농업 측면에서 준영구 논둑은 IoT 기반 수리 관리, 원격 관개, 드론 방제 시스템과의 결합에 유리한 것으로 평가되었다. 정책적 시사점으로는 설치 적합성 기준과 공법 선택 가이드라인의 표준화, 생애주기비용–편익 평가, 구조적 배수 보완책, 공공–민간 협력형 유지관리 체계 구축의 필요성이 제시된다. 표본 규모와 장기 수문자료 부족이라는 한계에도 불구하고, 본 연구는 지속가능하고 정밀한 벼농사를 위한 핵심 기반시설로서 논둑 현대화의 중요성을 강조한다.

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.

In this study, we investigated the characteristics of meteorological factors influencing odor emissions based on odor complaint records and meteorological observation data collected from 2014 to 2021 in Seoul, a megacity with a high population density and no regulated facilities or management zones apart from public environmental infrastructure and neighborhood living facilities. A total of 134,976 odor complaints were recorded over eight years (2,922 days), with a daily peak of 946 cases. From 2018 onward, daily complaints consistently exceeded 200 cases, reaching their highest level in 2019. Complaints were regularly and intensively concentrated during specific periods of the year. Among meteorological factors, dry tide time and dominant wind direction exhibited bimodal distributions within the observation range, while the other 11 meteorological factors were concentrated at a single value. The average meteorological conditions during the period with the highest number of odor complaints and observation days were: temperature 24.2oC, surface temperature 26.7oC, local pressure 1,000.4 hPa, sea-level pressure 1,010.8 hPa, vapor pressure 4.3 hPa, solar irradiance 10.5 MJ/m2, precipitation 0.6 mm, relative humidity 61.5%, wind speed 2.2 m/ s, and dominant wind direction 57.9o. These factors corresponded with the periods of highest odor complaints and observation days; however, dew point temperatures (15.3oC and 19.1oC), dry tide times (14.7 hours and 9.7 hours), and sunshine times (15.1 hours and 9.0 hours) did not coincide with those periods. The meteorological factors with the highest odor complaint emission rates (SROCE, cases/day) across 13 sections, ranked in descending order, were: dry tide time (73.5), surface temperature (67.7), solar irradiance (65.1), sea-level pressure (64.3), temperature (62.7), local pressure (62.7), dew point temperature (60.3), vapor pressure (58.7), sunshine times (54.1), relative humidity (53.1), wind speed (51.2), dominant wind direction (48.7), and precipitation (46.3). The intensity of odor complaint emission (IOCE, cases/day), calculated across the entire meteorological observation range, was highest in the following order: solar irradiance (63.8), dry tide time (60.5), sunshine times (60.3), local pressure (57.2), surface temperature (57.1), sea-level pressure (57.0), temperature (56.4), vapor pressure (55.8), dew point temperature (55.7), relative humidity (49.4), dominant wind direction (49.2), wind speed (49.0), and precipitation (46.5). The IOCE for solar irradiance was 37.2% higher than that for precipitation, which had the lowest IOCE. Additionally, the average IOCE of sunlightrelated meteorological factors such as dry tide time, sunshine times, and solar irradiance was 61.5 cases/day, which is 29.5% higher than that of moisture-related factors, including precipitation and relative humidity (47.5 cases/day). These results suggest that sunlight-related factors significantly contribute to odor complaints. This study evaluated the characteristics of odor emissions associated with complaints within the meteorological observation range, identified meteorological factors corresponding to the highest observed odor emissions, and assessed the contribution of these factors to odor emissions based on the IOCE metric. Based on these results, we anticipate being able to predict odor emission levels using weather forecast data.

This study investigates the effects of various Throttle Position Sensor (TPS) signal anomalies and throttle body defects on automotive acceleration and safety by experimentally reproducing and analyzing eight distinct fault scenarios. The results demonstrate that the Electronic Control Unit (ECU) consistently detects signal anomalies and activates fail-safe modes, limiting throttle response and engine output to maintain automotive control. In all fault conditions, sudden unintended acceleration was effectively prevented, and braking performance remained unaffected. These findings underscore the robustness of the throttle control system against electrical and mechanical defects and offer valuable insights for the design of safer drive-by-wire systems.

This study investigates the effects of canopy fabric material and vent diameter on the deployment performance of sea anchors for fishing operations through field experiments. Three canopy configurations were tested: polyamide (PA), polyester (PES), and a PA – PES alternating combination. Vent diameters of 80 cm and 40 cm were applied to each fabric as controlled structural factors. Deployment performance was evaluated from entrance diameter computed using four evenly spaced water level loggers, and maximum towing tension was recorded with a load cell. Key findings were discovered as follows: PES and the PA – PES mix achieved deployment diameter/ratio and maximum tension comparable to the current PA standard, indicating practical substitutability. PES also exhibited superior stability, showing reduced variability even with the smaller vent (a change in standard deviation ΔSD-1.75 cm). The mixed canopy maintained performance similar to PA. As expected, vent diameter systematically affected geometry and load (80 cm: 187 – 198 kgf vs. 40 cm: 249 – 268 kgf), underscoring the need to pair material selection with appropriate vent sizing. In conclusion, PES and mixed fabrics are viable alternatives to PA, and co-optimization of fabric choice and vent diameter can enhance sea-anchor performance, durability, and operational reliability for fishing operations.

This study investigates the potential market demand and the effects of consuming senior-friendly foods on the nutritional status and quality of life of older adults in South Korea, which has rapidly become a super-aged society. Utilizing data from a 2024 field study, a Difference-in-Differences (DID) analysis was employed to evaluate the impact of senior-friendly food intake on calorie and nutrient supplementation, as well as improvements in quality of life. The findings reveal a substantial potential market, with 11.7 to 16.2% of individuals aged 75 and over expressing purchase intentions. Significant improvements were observed in both the Mini Nutritional Assessment (MNA-SF) and the Nutrition Quotient for Elderly (NQ-E) scores after the consumption of senior-friendly foods. Further, the intake increased daily calories by an average of 322.9 kcal, protein intake by 14.2 g, and fat intake by 12.1 g. The utility weight, indicating quality of life, also significantly increased by 0.037. Policy directions should prioritize promoting the senior-friendly food market to improve nutritional intake and quality of life among the rapidly growing older adult population, as evidenced by the significant positive effects observed in this study.

본 연구는 간호대학 신입생을 대상으로 그릿, 성장마인드셋, 학업적 자기효능감이 자기 주도학습에 미치는 영향을 확인하고자 하였다. 최근 의료 환경의 급변과 복잡성 증가에 따 라 간호대학생의 자기주도학습 역량은 중요한 교육 목표로 부각되고 있다. 이에 따라 심리 적 요인들과 자기주도학습 간의 관계를 파악하여 교육적 개입의 근거자료를 마련하고자 하 였다. J시 소재 간호대학 신입생 180명을 대상으로 구조화된 설문조사를 실시하고, SPSS/WIN 27.0 프로그램을 이용하여 기술통계, 상관분석, 다중회귀분석을 실시하였다. 그릿 (r = .74), 성장마인드셋(r = .46), 학업적 자기효능감(r = .73)은 자기주도학습과 유의한 정적 상관관계를 보였다. 회귀분석 결과, 그릿(β = .49, p < .001)과 학업적 자기효능감(β = .48, p < .001)이 자기주도학습에 유의한 영향을 미치며, 설명력은 71.0%로 나타났다. 반면 성장마인드셋은 통계적으로 유의한 영향을 미치지 않았다. 간호대학 신입생의 자기주도학 습 능력은 임상 환경에서 효과적으로 대처할 수 있는 필수 역량으로 그릿과 학업적 자기효 능감이 자기주도학습 역량을 크게 증진시키는 것으로 나타났다. 따라서 간호대학생의 자기 주도학습 역량 강화를 위해 그릿과 학업적 자기효능감을 증진하는 교육 프로그램 개발이 필요하다.

바이오차는 현재 토양개량제이자 탄소격리재로 사용되고 있으며, 건축산업에서 탄소격리에 관한 관심이 증가하고 있다. 본 연구에서는 목질계 바이오차를 시멘트 복합체에 함유하여 탄소격리효과의 가능성을 조사하는 것을 목표로 한다. 목질계 바이오차는 고탄소 물질로 수분을 흡수하는 특성이 있으며 시멘트 복합체에 함유하고자 할 때 시멘트와 비슷한 입도를 가져야한다. 혼입방법에 따라 바이오차를 함유한 시멘트 모르타르의 압축강도 특성을 평가하였으며, 시멘트를 바이오차로 1∼5% 치환하는 경우 Plain 대비 5∼12%까지 압축강도가 증진되는 것을 확인하였다.

본 연구는 간호대학생의 리더십과 국제보건간호역량과의 관계를 파악하고, 간호대학생의 국제 보건간호역량에 영향을 주는 요인을 확인하고자 시도되었다. 연구 대상자는 일 대학에 재학 중인 간호대학 생을 대상으로 편의 표집 하였으며, 최종 197명이 연구에 참여하였다. 수집된 자료는 SPSS/WIN 28.0 프 로그램을 활용하여 통계적으로 분석하였다. 연구 결과 간호대학생의 리더십은 일반적 특성 중에 학년 (F=8.18, p<.001), 대학 생활만족도(F=10.16, p<.001), 학점(F=11.37, p<.001)에 따라 유의한 차이를 보였 고, 국제보건간호역량은 학년(F=4.36, p=.005)과 학점(F=7.40, p<.001)에서 통계적으로 유의한 차이를 보 였다. 연구 대상자의 리더십은 국제보건간호역량과 상관관계(r=.65, p<.001)를 보였으며, 간호대학생의 국 제보건간호역량에 영향을 미치는 요인은 리더십(β=.67, p<.001)으로 확인되었고, 모형 설명력은 45%였다 (F=16.25, p<.001). 이상의 결과를 바탕으로 글로벌 의료환경 안에서 간호대학생이 국제보건간호역량을 갖 추어 간호 활동을 할 수 있도록 리더십과 국제보건간호역량을 동시에 향상할 수 있는 실질적인 교육프로그 램을 개발할 필요가 있다.

본 연구는 흡연 대학생을 연구대상자로 선정하여 금연 자기효능감, 학업 소진과 금연 의도 간에 어떤 연관이 있는지 확인하고, 흡연 대학생의 금연 의도에 영향을 주는 요인을 규명하기 위해 시도되었다. 본 연구에 참여한 대상자는 2개 대학에 재학 중인 흡연 대학생 157명을 대상으로 2023년 10월 10일부터 2023년 11월 10일까지 자료를 수집하였다. 수집된 자료 분석은 SPSS/WIN 28.0 프로그램을 활용하여 변 수 특성에 따라 기술통계, t-test, ANOVA, Pearson’s 상관관계 분석, 다중회귀분석을 하였다. 본 연구에서 흡연 대학생의 금연 의도는 금연 자기효능감(r=.55, p<.001)과 통계적으로 유의한 양의 상관관계가 있었고, 학업 소진(r=-.26, p=.001)와 음의 상관관계가 있었다. 또한 흡연 대학생의 금연 의도에 영향을 미치는 요 인은 금연 자기효능감(β=0.55, p<.001), 학업스트레스(β=-0.21, p=.014)로 확인되었고. 회귀 모형식은 유의하였으며(F=37.92, p<.001), 모형의 설명력은 32.0%였다. 이를 근거로 흡연 대학생의 금연 의도를 높 이기 위해서는 학생 개인의 경험과 환경적 요인 외에도 금연 자기효능감을 높일 수 있는 내용과 학업 소진 을 줄이는 방안을 금연 교육에 포함할 필요가 있다.

In this study, in order to develop an eco-friendly filtration method that considers the health and safety of the aquatic ecosystem by differentiating it from chemical methods (coagulants, oxidants, etc.), which are mainly used as methods for managing the removal of algae in the algal bloom stage, an effective separation membrane for algae removal was reviewed, an appropriate technology was proposed through field application, and the effect of algae removal was evaluated. The membrane used was applied in the field by constructing an optimal technology through auxiliary facilities with an immersion tubular membrane and a pressurized tubular membrane resistant to adhesive pollutants and algae. As a result, the strong characteristics of Fouling (blocking) by adhesive algae were confirmed, and the effect of removing algae and particulate matter in the immersion type tubular membrane was 99% chlorophyll-a (Chl-a), 99.2% suspended solid (SS), and 96.7% of pressurized tubular membranes, showing excellent effects in removing algae and particulate organic matter. In addition, as a result of field application to eutrophic reservoirs where high-density algae are distributed, it was confirmed that stable operation of algae was possible during the process of filtering, separation, and concentration.

This study developed an unmanned autonomous moving algae collection device (HAMA-bot) to remove high-density algae concentrated in the waterfront of urban agricultural reservoirs, and analyzed the effect of algae removal after field application to medium-sized urban reservoir. The algae reduction effect (Chl-a) of the study site in the reservoir by the HAMA-bot operation showed an average 18.5% higher in the treatment area compared to the control area before operation, while the average reduction of 24% in the treatment area after operation. In addition, the Chl-a removal rate, which directly analyzed the influent and effluent of HAMA-bot, showed a very high level with an average of 96.9% (94.7~99.2%). Currently, it is optimized for urban reservoirs and manufactured on a small scale, but it is a useful tool that can be applied on a large scale to large dams and rivers, and it is considered that the field applicability would be improved with the optimized scale.

The Ansan Reclaimed Wetland, reclaimed in 1986 and maintained for 38 years, underwent two wetland function assessments to develop strategies for enhancing biodiversity and conservation. The biota of the reclaimed wetland showed an increase in the number of species observed across most taxa, while the number of amphibian and reptile species decreased. Among legally protected species and specific species, Aix galericulata and Lefua costata were not observed, whereas Libellula angelina were introduced. The results were categorized into “protection or improvement” and “enhancement.” Proposed conservation measures include removing planted shrubs, maintaining waterways, and installing gabion structures and wildlife corridors.

Time-series and spatial analysis of collected odor complaints in Seoul megacity during 2014~2021 were conducted for the characterization of odor complaints emitted from the living environment. The ratio of odor complaints in the environmental complaints was 16.7%, and odor complaints increased 3.3 times from 9,053 cases in 2014 to a maximum of 29,425 cases in 2019. In the time-based evaluation (monthly, daily (day of the week), and hourly variations), the highest number of complaints occurred in June, Monday, and 9:00 AM, respectively. While the lowest number of complaints occurred in December, Sunday, and 3:00 AM, respectively. Among 25 provinces in Seoul megacity, the odor complaints that occurred from 2014 to 2021 were concentrated in Eunpyeonggu. The odor complaints of Seodaemun-gu and Nowon-gu occurred at the highest levels in January-February and June, respectively. Based on the characteristics of odor complaint occurrence according to the above time-series and spatial analyses, more effective odor management and control can be implemented by focusing on those hotspot areas and specific time periods.

This study examined the spatiotemporal changes in Jilnal Wetland using satellite image-based time series data and field surveys. The analysis focused on changes in open water surface area and vegetation using the JRC Surface Water Monthly Water History dataset and Landsat imagery from 1984 to 2020. The impact of hydrological changes on vegetation was assessed through surveys conducted before and after the 2023 monsoon season. Results indicated a continuous decrease in open water surface area since the 1980s, with a sharp decline post-2003. NDVI analysis showed an inverse relationship between water area reduction and increased vegetation vigor and coverage. Field surveys revealed that hydrological changes directly affected vegetation structure, leading to new herbaceous communities and greater diversity post-monsoon. These findings highlight significant ecosystem changes driven by anthropogenic factors and natural succession, necessitating a comprehensive conservation strategy, including development control, hydrological management, terrestrialization prevention, and long-term monitoring.

도모익산(domoic acid) 군 독소는 기억상실성 패류중독 (amnesic shellfish poison, ASP)을 유발하는 해양생물독소 이다. 도모익산은 주로 규조류 Pseudonitzchia sp. 에서 생 성되어 이매패류의 체내에 축적되어 독화된다. 우리나라 연안에서는 봄철과 가을철에 Pseudonitzchia sp.의 출현이 보고되고 있으며, 수산물 내 도모익산 군 독소의 함량 기 준을 설정하여 관리하고 있다. WHO와 EFSA에서는 선제 적 안전관리를 위하여 인체노출안전기준안을 제안하여 관 리하고 있다. 본 연구는 도모익산 군 독소의 이화학적 특 성, 분석법, 인체 노출 사례와 국내외 관리 현황 등의 자 료를 검토하여 도모익산 군 독소의 체계적인 모니터링과 안전관리의 기반을 마련하고자 수행되었다.