To utilize textured vegetable protein (TVP) in food manufacturing, TVP was soaked in salt solutions of different concentrations. Physicochemical quality characteristics of TVP were then measured. When TVP was soaked in a salt solution, the pH tended to increase compared to the control. However, the pH decreased after 18 hours of soaking. The salinity of the control decreased slightly from the initial value depending on the soaking time. The group treated with salt solution showed higher salinity than the control. Water absorption capacity of the control increased as the soaking time increased. However, water absorption capacity of the group treated with salt solution decreased as the concentration of salt solution increased. Lightness of the group treated with salt solution showed less change than the control during soaking. The redness increased as the concentration of salt solution increased. The yellowness increased compared to the control during soaking. Hardness, gumminess, and chewiness of the control decreased during soaking in water. The group treated with salt solution showed significantly higher hardness, gumminess, and chewiness as the concentration of the salt solution increased. However, adhesiveness, elasticity, and cohesiveness generally did not show significant differences among samples.

We developed a new oyster mushroom cultivar named 'Dawon-tari', which has a longer stipe and higher yield than those of ‘sootari’.‘Dawon-tari’ was crossed by mating monokaryons isolated from ‘Sootari’ and ‘Daejang2ho’. The optimal temperature for mycelial growth was determined to be 20~25°C on potato dextrose agar medium, while the optimal temperatures for primordia formation and fruiting body growth were 15~17°C on a sawdust substrate. During bottle cultivation, the mycelial growth phase required approximately 26 days. Additionally, primordia formation required 5 days, and fruiting body growth took 4 days. The fruiting bodies exhibited a shallow funnel shape; were grayishbrown; and the stipes were characterized by a long, thin structure. The yield of fruiting bodies was 185 g per 1,100 mL bottle, which was 5% higher than that of ‘Sootari’.

In modern society, buildings are becoming more complex, and the population is becoming more densely populated. Such large buildings require a variety of evacuation measures, as there is a high possibility of large-scale human casualties due to increased evacuation distance and evacuation time in the event of a fire. Strobe light and exit sign light are used as important evacuation equipment to provide early warning and evacuation directions. In this thesis, we conducted a fire simulation assuming that a fire occurrence point notification function and a strobe light function were added to equipment such as visual alarms and evacuation guidance, and compared and analyzed the difference in evacuation completion time with existing equipment. The scenarios for the simulation were divided into “general fire situations” and “fire location and evacuation exit guidance situation” and the differences in evacuation completion time in the event of a fire were compared and analyzed for each floor from the 1st floor to the 3rd floor. The maximum travel distance to complete evacuation in the case of a fire on the first floor decreased by 80.6 m and the evacuation completion time decreased by 329.4 seconds, and the maximum travel distance to complete evacuation in the case of a second-floor fire decreased by 28.5 m and the evacuation completion time by 438.8 seconds. During the fire on the third floor, the maximum distance decreased until evacuation was completed to 3.4 m, and the evacuation completion time was reduced by 355.6 seconds. It is expected that if the congestion level of evacuation routes is reduced by utilizing the congestion level of evacuation exits when fire alarm systems and evacuation equipment are activated, the evacuation completion time will be further shortened and evacuations will be carried out quickly and safely.

Biodiesel is a traditional energy field that can replace low-quality marine fuels for ships and various studies have been conducted. Since the 2000s, Korea has introduced a mandatory supply system of biodiesel for domestic vehicle diesel, gradually raising the blending ratio from 0.5% to 3.5%, and is expected to raise the mandatory blending ratio to about 8.0% by 2030. Therefore, in this study attempted to blend high-quality samples that meet the biodiesel quality standards manufactured by domestic companies with MGO in ratios ranging from 0 to 60%. We utilized a 1-ton combustion chamber to compare and analyze the exhaust gas emissions characteristics. As a result, in the BD60 condition, which represents the maximum range in this study, the O2 increased by approximately 1.5%p, and CO2 tended to decrease by 1.1%p. NOx decreased by approximately 18.2%p from 34.1 ppm to 27.9 ppm. In the case of SOx, a very low concentration of 0.08 ppm was detected under the BD0 condition, and it was undetectable under all other conditions containing biodiesel. This suggests that MGO itself has excellent low-sulfur oil quality and can implement zero SOx through biodiesel mixing. Furthermore the combustion efficiency decreased by approximately 1.91%, from 72% to 70.2%, and the exhaust gas temperature also decreased by about 4.5%p. However despite the lower calorific value of biodiesel compared to MGO, it demonstrated relatively close thermal output per unit content. This indicates sufficient potential for biodiesel to serve as a viable alternative fuel for ships in the future.

이동 물체의 전역 경로 탐색에 있어 출발지점과 도착지점은 반드시 필요한 조건 중 하나이다. 선박의 경로 탐색에 있어 도착 가능 지점은 부두 이외 선박의 입출항 전 대기 장소 및 선박 수리 등 다양한 목적으로 이용되는 정박지(Anchorage)도 포함될 수 있다. 이 러한 정박지는 연안 해역 환경에 따라 특정 형태로 설계된 공간으로 경로 탐색을 위한 도착지점은 선박이 정박을 위한 투묘 지점이라고 볼 수 있다. 이에, 본 연구에서는 샘플링 기반 탐색 알고리즘 중 PRM 및 계산 기하학 알고리즘을 통해 정박지라는 특정 공간에 대해 다른 선박이 점유하지 않는 공간 탐색을 통한 투묘 지점 산출 방법을 제시하였다. 또한, 개발된 알고리즘을 검증하기 위하여 국내 목포항 11번 정박지를 대상 해역으로 선정하고 시뮬레이션을 수행한 결과 다른 선박이 점유하지 않는 공간에 대해 투묘 지점을 탐색할 수 있었다. 본 연구의 결과는 향후 선박의 의사 결정 및 VTS의 정박지 관리를 위한 지원 방안으로 활용될 수 있을 것으로 기대된다.

This study explored the process-structure-property (PSP) relationships in Ti-6Al-4V alloys fabricated through direct energy deposition (DED) additive manufacturing. A systematic investigation was conducted to clarify how process variables—specifically, manipulating the cooling rate and energy input by adjusting the laser power and scan speed during the DED process—influenced the phase fractions, pore structures, and the resultant mechanical properties of the samples under various processing conditions. Significant links were found between the controlled process parameters and the structural and mechanical characteristics of the produced alloys. The findings of this research provide foundational knowledge that will drive the development of more effective and precise control strategies in additive manufacturing, thereby improving the performance and reliability of produced materials. This, in turn, promises to make significant contributions to both the advancement of additive manufacturing technologies and their applications in critical sectors.

본 연구는 간호대학생을 대상으로 학업스트레스와 그릿, 메타인지, 학 업성취도와의 관계를 확인하고, 학업스트레스와 학업성취도와의 관계에 서 그릿과 메타인지의 매개효과를 규명하여 학업성취도 향상을 위한 간 호중재 개발의 근거자료를 제공하고자 시도되었다. 본 연구의 자료수집 은 2024년 4월 1일부터 4월5일까지 경북지역의 일개 간호대학생 210명 을 대상으로 온라인 설문조사 방식으로 진행되었다. 수집된 자료는 Descriptive statistics, t-test, ANOVA, Pearson’s correlation coefficient 를 이용하여 분석하였으며, 병렬다중 매개효과의 검증을 위해서 PROCESS Macro의 4번 모형을 사용하였다. 연구결과 학업스트레스와 그릿(r =-. 313, p<.001), 메타인지(r =-.303, p<.001), 학업성취도(r =-.378, p<.001) 는 부적의 상관관계에 있었고, 학업성취도와 그릿(r =.289, p<.001), 메타 인지(r =.244, p<.001)는 정적인 상관관계에 있으면서 통계적으로 유의하 였다. 그리고 학업스트레스와 학업성취도와의 관계에서 그릿의 부분매 개 효과(B=-0.03 CI[-0.06~-0.01])가 확인되었으며, 모형의 설명력은 22.5%였다(F=13.99. p<.001). 그러므로 간호대학생의 학업스트레스를 줄이고 학업성취도 향상을 위해서는 그릿을 강화하는 다양한 프로그램의 개발과 함께 그 효과를 확인하는 연구가 이루어져야 할 것이다.

Purpose: This study explored teachers’ experiences of practicing character education focusing on Juingonggwanbeop in elementary schools. The goal was to provide universal Juingong-gwanbeop character education programs for schools. Methods: This study used one-on-one in-depth interviews to collect data from teachers working at different elementary schools regarding their character education experiences. The collected data were analyzed using qualitative content analysis. Results: 5 themes and 16 sub-themes were derived from the analysis. The five themes included “Starting Juingong-gwanbeop character education for various reasons”, “Feeling joy when seeing students changing through Juingong-gwanbeop character education”, “Difficulties in managing Juingong-gwanbeop character education”, “Development and dissemination of standardized Juingong-gwanbeop character education programs”. Conclusion: The findings showed that both students and teachers experienced positive changes and growth in their school lives through Juingong-gwanbeop character education. The participants expressed a strong desire to develop universal programs and materials for teachers who have not been exposed to Juingong-gwanbeop.

Purpose: This study aimed to explore the experiences of instructors who participated in and operated a parent education program utilizing the Juingong-gwan practice at the H Science Institute, and to understand the meaning and essence of this program. Methods: This study employed a qualitative content analysis. In-depth individual interviews were conducted with six instructors who participated in the parental education program at H Science Institute. Data were collected over three months from July to September 2023. Results: Seven main themes were identified from the instructors’ experiences in the parent education program at the H Science Institute. The main themes include “Participation with various motivations,” “The essense of parent education: team discussions,” “Feeling compassion and responsibility,” “Challenges in creating lectures,” “Realizing the possibility of mutual change,” “Growth and Transformation through instructor and helper roles,” and “Hope to spread awareness.” Conclusion: This study confirmed that the parent education program utilizing the Juingong-gwan practice at H Science Institute promotes positive changes for both parents and instructors. It also suggests the need for program development, including the use of online platforms, the introduction of step-by-step advanced courses, the provision of follow-up programs, and the expansion of programs that support both teachers and parents.

중재 시술의 발전으로, 노출된 방사선으로 인한 의료 방사선 중재 시술자에 미치는 건강 위협이 증대됨에 따라 시술 중 방사선 노출을 최소화하기 위한 관심과 노력이 요구되고 있다. 이에 대한췌장담도학회에서는 투시 장비를 이용한 중재 시술 중 의료 방사선 중재 시술자에게 미치는 방사선 노출을 최소화하기 위한 권고안을 개발하였다. 본 권고안은 방사선 차폐, 방사선 투시기와 방사선량의 관리, 방사선 노출 선량 한도 및 감시, 임신과 출산 총 4가지 분야로 나누어 중재 시술자에게 방사선 노출의 위험을 이해하기 위한 지식을 전달하고 실질적으로 수행해야 하는 권고사항을 명확히 제시하여 불필요한 방사선 노출을 피하기 위한 실용적인 접근이 가능하도록 구성되었다. 본 권고안을 통해 의료 방사선 중재시술자의 방사선 노출을 최소화하여 안전하고 효과적인 중재 시술이 이루어질 수 있기를 기대한다.

모기류는 흡혈을 통해 원충, 바이러스, 사상충 등 다양한 병원체를 보유하며 말라리아, 일본뇌염, 웨스트나일열, 뎅기열 등을 사람에게 매 개하는 위해성이 있는 위생해충이다. 이번 연구에서는 해외유입 모기류 감시를 위해 경상남도 고성군에 스마트 고공포집기를 설치하여 2022년 부터 2023년까지 모기류들을 모니터링하였다. 조사기간 동안, 총 3속 5종 43개체가 채집되었으며, 이중 삼일열말라리아를 매개하는 벨렌얼룩날 개모기(Anopheles belenrae)를 경남 지역에서 처음으로 발생함을 확인하였다. 본 연구에서는 스마트 고공포집기를 통해 해외에서 유입가능한 모 기류에 대한 실시간 모니터링이 가능함을 확인하였다.