The occurrence of sudden strike pest events in urban areas is increasing as global warming intensifies, consequently, re causing harmful impacts. Studies on these incidents are fewer in number and insufficient compared to research on other nuisances such as mosquitoes and flies. Therefore, we conducted a study on the development of a selective collection method, using a filter layer to establish a monitoring system for Ephemera orientalis (Ephemeroptera: Ephemeridae), a species frequently identified as a sudden strike pest. Three sampling points were selected along the Hangang River in Namyangju, where E. orientalis outbreaks occur. Prototypes, consisting of four layers and with a light source attached to attract insects, were installed at each sampling point. Sampling was performed every 30 minutes between 19:00 and 22:30 in the month of June. The filter interval of each layer was adjusted so that the collected mayflies were distributed into specific layers. To evaluate the collection efficiency in line with the materials and the filter intervals, the optimal collection efficiency was investigated by combining two types of layer materials (stainless and acrylic) and filter intervals (1-5 mm). The optimal conditions were as follows: The selective collection efficiency was found to be highest at 96.5% when the interval of the selective target filter was 2.0 mm and there was one upper filter.

A new brown variety of Flammulina velutipes, referred to as ‘Asakgold,’ was bred by crossing two monokaryons isolated from the “Geumhyang2ho” and “Garlmoe” varieties. The pileus color of the new variety is light brown and its shape is hemispherical. During bottle cultivation, the period necessary for mycelial growth was 40 days, 9 days for primordia formation and 15 days for fruiting body growth. The total cultivation period was 64 days, which was similar to that of the control variety “Yeoreumhyang1ho.” The pileus of the new variety was similar and the stipe was thinner and longer than that of the control. The number of valid stipes per bottle was 495, which was 37 % higher than that of the control (362), and the yield was 214 g, 16 % higher than that of the control (185 g). The -glucan content was 28.69 %, which was observed to be 1.6 times more than that of the control.

참두메부추(Allium spirale Willd.)는 관상 및 식용식물로 서 가치가 높다. 그러나, 참두메부추의 육묘를 위한 생육조 건에 관한 연구는 부족한 실정이다. 본 연구는 육묘 플러그 셀 크기, 차광율 및 시비처리가 참두메부추의 유묘 성장에 미치는 영향을 조사하였다. 실험 결과, 플러그 셀 크기는 용 적이 가장 큰 105셀에서 생육이 가장 우수하였다. 생육지표 중 초장과 근장은 60% 차광처리에서 상대적으로 높게 측정 되어 생육이 우수하였다. 속효성 고형비료[DO-Peters(N:P:K= 20:20:20)는 셀 당 100mg을 시비했을 때 근수와 근장의 수치 가 가장 높게 조사되었으며, 속효성 액체비료 Peters(N:P:K= 20:20:20)는 8mL씩 주 2회 시비한 처리구에서 초장과 엽수 의 수치가 가장 높았다. 따라서 참두메부추 유묘의 초기 생육 에 있어서 속효성 고형비료는 100mg, 액체비료는 8mL를 주 2회 시비하는 것이 적절하였다. 참두메부추는 원예상토가 충 진된 105셀 플러그 트레이에 종자를 파종한 후 DO-PRO 100mg 또는 Peters 8mL를 주 2회 엽면시비하면서 60% 차 광조건에서 재배하는 것이 효과적이었다.

In this study, the growth characteristics of Lentinula edodes were confirmed by bean sprout waste(BW) as an alternative raw material for rice bran. The mycelium growth of Sanjo701, a major cultivation variety of L. edodes, was compared between a medium mixed with 8:2(v/v) of oak sawdust and a medium mixed with BW 50% and BW 100%. The mycelium growth in BW 50% was 13.5 cm. Compared to the control, BW 50% increased the diameter of the pileus by 1.6 cm. Additionally, the length of the pileus decreased by 0.4 cm when comparing the growth of the fruit body. In contrast, at BW 50%, the diameter of the pileus decreased by 9.6 cm and the length of the stipe decreased by 1.4 cm. According to analysis of the constituent amino acids, BW 50% showed a lower overall nutritional content than the control, whereas BW 100% had a lower amino acid content than the control. However, glutamic acid and aspartic acid, which are flavor-enhancing ingredients, were observed at levels of 3.954 mg/g and 1.436 mg/g, respectively, in BW 100%. Therefore, if bean sprout by-products are efficiently processed and utilized, it is believed that they will be beneficial to farmers as a substitute for rice bran and reduce the cost of manufacturing substrate

We conducted an on-site application study at the livestock cooperative fertilizer plant to compare the composting period, temperature change, moisture content, and chemical properties between livestock manure compost using sawdust as a moisture regulator with those using spent oyster mushroom substrate. The composting period, moisture content, and fertilizer composition of compost containing spent oyster mushroom substrate did not differ from that of conventional compost mixed with sawdust after the first and second fermentation and post-maturation stages, it was suitable as a material for manufacturing livestock manure compost. The spent oyster mushroom substrate also lower the production cost of livestock manure compost by replacing the more expensive sawdust. The developed technology is expected to contribute towards the utilization of by-products of the oyster mushroom harvest while simultaneously producing high quality livestock manure compost.

The study used the whole-life carbon assessment method to conduct a thorough carbon-neutral evaluation of a standard steel structure. To further assess carbon emissions, 11 design-changed models were evaluated, with changes made to the span between beams and columns. The results of the carbon emission assessment showed savings of approximately 13.1% by implementing the stage of the beyond life cycle. Additionally, the evaluation of carbon emissions through design changes revealed a difference of up to 42.2%. These findings confirmed that recycling and structural design changes can significantly reduce carbon emissions by up to 48.6%, making it an effective means of achieving carbon neutrality. It is therefore necessary to apply the stage of beyond life cycle and structural change to reduce carbon emissions.

With the increasing number of aging buildings across Korea, emerging maintenance technologies have surged. One such technology is the non-contact detection of concrete cracks via thermal images. This study aims to develop a technique that can accurately predict the depth of a crack by analyzing the temperature difference between the crack part and the normal part in the thermal image of the concrete. The research obtained temperature data through thermal imaging experiments and constructed a big data set including outdoor variables such as air temperature, illumination, and humidity that can influence temperature differences. Based on the collected data, the team designed an algorithm for learning and predicting the crack depth using machine learning. Initially, standardized crack specimens were used in experiments, and the big data was updated by specimens similar to actual cracks. Finally, a crack depth prediction technology was implemented using five regression analysis algorithms for approximately 24,000 data points. To confirm the practicality of the development technique, crack simulators with various shapes were added to the study.

치유농업의 목적은 건강회복 및 유지, 증진을 위한 사회적 비용의 절감과 농촌의 활력, 소득원의 창출을 통한 농업‧농촌의 지속가능한 성장에 있다. 이러한 치유농업의 가치는 치유농업 대상자뿐만 아니라 농 업인, 지역사회, 보건서비스 제공자 등 다양한 주체가 혜택을 얻는 데 있다. 이 연구는 치유농업의 지속 가능한 생태계 구축방안을 제시하고자 선행연구를 통해 핵심요인을 도출하여 환경생태적, 사회경제 적 편익, 지역사회발전으로 설정하였다. 또한 각각의 요인은 하위요인으로 구분하여 적합도와 중요도 를 파악하였다. 델파이 조사는 치유농업에 실무와 경험이 풍부한 연구자, 교수, 치유농가 등 전문가 15 명을 대상으로 하였는데 이 중 불성실한 답변을 제외하고 최종 12명을 대상으로 2차에 걸친 조사를 하 였다. 분석결과 치유농업의 지속가능한 생태계 구축을 위한 핵심요인을 도출하였다. 또한 측정영역과 하위요인에 대한 중요도와 적합도 분석결과 7개의 상위요인과 33개 하위요인을 선정하였다. 지역사회 의 다양한 주체와의 교류 활성화를 통해 농업, 의료, 사회, 교육 분야에서 농업의 새로운 대안으로써 치 유농업을 운영할 필요가 있다. 이를 통해 치유농업의 지속가능한 생태계 구축을 위한 정책지원과 기초 적인 방향성을 제시하였다는 점에서 의미가 있다.

This study analyzed the factors affecting the educational effect of safety innovation education for management of public institutions. A survey was conducted on 294 CEOs and executive directors of public institutions (divided into construction sites, workplaces, and research facilities) subject to the safety management rating system to understand the impact of educational participants' characteristics and behavioral intentions after safety innovation education. As a result of statistical analysis, it was found that the executive director had a higher behavioral intention than the CEO, and the education quality, education instructor, and educational environment all had a significant positive (+) effect on the behavioral intention. This study can be used as basic data for further research related to safety innovation education for management of public institutions