농림축산검역본부는 해외해충 연구를 위해 밀폐능력을 갖춘 검역해충실험동을 구축하였다. 연구실험실로써 검역해충실험동의 적합성을 확인하기 위해 파밤나방을 이용하여 해충사육, 연구, 밀폐기능을 검증하였다. 해충사육 기능검증에서 한 세대의 파밤나방 완성에 필요한 온도별 생활사는 25°C에서 32.2일이 소요되었으며, 알 부화율은 80%, 유충 용화율은 86.6%, 번데기 우화율은 90%로 조사되었다. 연구기능 검증에서 살포법과 침지법을 이용하여 2종의 살충제(풀룩사메타마이드와 히드라메칠론)에 대한 고도의 유충 감수성을 확인하였다. 밀폐기능 검증에서는 겨울 동안 수행된 검역해충실험동의 유출시험에서 외부에 설치된 성페로몬 트랩에 파밤나방 수컷성충이 포획되지 않아 성충 유출은 없었다. 본 연구결과를 바탕으로 해외해충에 대한 다양한 연구가 검역해충실험동에서 가능할 것으로 판단된다.

Ammunition Demilitarization facility (ADF) should be set up the feasible goals and continue to operate, taking into account non-profit characteristics. However, due to the lack of performance measurement methods in ADF, which are essential to national policy at a significant cost each year, the reliability of the evaluation results can be insufficient. In this paper, the Balanced Score Card (BSC) method was applied that could be evaluated to reflect the financial and non-financial features. The relevant literature research and army regulations reflected the results of various interviews of the expert group. The extraction of success performance area in ADF was confirmed using the BSC method and the Decision Variable (DV) candidate was created to use regression for selecting the DV. Additionally, the key performance indicator was presented by verification the feasibility of content by conducting the survey of experts. The implications of this paper are as follows. First, the proposed BSC model was found to be suitable for practical use in ADF reflecting the non-profit characteristics. Second, accurate evaluation of ADF can contribute to long-term development of ADF. Finally, it can be applied to the management process of the other military sector, so it can be expected to play a role in providing basic data and spreading it to other areas.

The railroad facilities are intended for long-term operation as the initial acquisition costs necessary for infrastructure construction are high. Therefore, regular maintenance of railroad facilities is essential, and furthermore, system reliability through systematic performance evaluation is required. In this study, the signal control system of railroad electrical equipment was selected as the subject of research and the performance evaluation target facility selection study was conducted using AHP. The results of the study can contribute to the reliability of the signal control system as well as to the reliability of the railroad system, which is a higher system.

Radiological impact analyses were carried out for a near-surface radioactive waste repository at Gyeongju in South Korea. The RESRAD-ONSITE code was applied for the estimation of maximum exposure doses by considering various exposure pathways based on a land area of 2,500 m2 with a 0.15 m thick contamination zone. Typical influencing input parameters such as shield depth, shield materials’ density, and shield erosion rate were examined for a sensitivity analysis. Then both residential farmer and industrial worker scenarios were used for the estimation of maximum exposure doses depending on exposure duration. The radiation dose evaluation results showed that 60Co, 137Cs, and 63Ni were major contributors to the total exposure dose compared with other radionuclides. Furthermore, the total exposure dose from ingestion (plant, meat, and milk) of the contaminated plants was more significant than those assessed for inhalation, with maximum values of 5.5×10−4 mSv‧yr−1 for the plant ingestion. Thus the results of this study can be applied for determining near-surface radioactive waste repository conditions and providing quantitative analysis methods using RESRAD-ONSITE code for the safety assessment of disposing radioactive materials including decommissioning wastes to protect human health and the environment.

A paradigm shift in the government’s energy policy was reflected in its declaration of early closure of old nuclear plants as well as cancellation of plans for the construction of new plants. To this end, unit 1 of Kori Nuclear Power Plant was permanently shut down and is set for decommission. Based on these changes, the off-site transport of spent fuels from nuclear power plants has become a critical issue. The purpose of this study is to develop an optimized method for transportation of spent fuels from Kori Nuclear Power Plant’s units 1, 2, 3, and 4 to an assumed interim storage facility by simulating the scenarios using the Flexsim software, which is widely used in logistics and manufacturing applications. The results of the simulation suggest that the optimized transport methods may contribute to the development of delivery schedule of spent fuels in the near future. Furthermore, these methods can be applied to decommissioning plan of nuclear power plants.

This ammonia prediction study was performed using the time-series artificial neural network model, Long-short term memory (LSTM), after long-term monitoring of ammonia and environmental factors (ventilation rate (V), temperature (T), humidity (RH)) from a slurry finishing pig farm on mechanical ventilation system. The difference with the actual ammonia concentration was compared through prediction of the last three days of the entire breeding period. As a result of the analysis, the model which had a low correlation (ammonia concentration and humidity) was confirmed to have less error values than the models that did not. In addition, the combination of two or more input values [V, RH] and [T, V, RH] showed the lowest error value. In this study, the sustainability period of the model trained by multivariate input values was analyzed for about two days. In addition, [T, V, RH] showed the highest predictive performance with regard to the actual time of the occurrence of peak concentration compared to other models . These results can be useful in providing highly reliable information to livestock farmers regarding the management of concentrations through artificial neural network-based prediction models.

PURPOSES : In this study, the luminance of night road markings was measured in a tunnel of length 200 m or less. The purpose of the project is to evaluate the consistency of night road markings. METHODS : In this study, field measurements were conducted to achieve the purpose of this study. Five tunnels with lengths of less than 200 m were selected to measure the luminance value of the road markings. The analysis of the difference in road markings between the inside and outside points of the tunnel and the analysis of alternative tunnels and points were used to assess the consistency of road markings in tunnels. RESULTS : The average luminance of the tunnel’s night road markings was 9.7, and the standard deviation was 3.0. The analysis of variance for the tunnel and point indicated that the p-value was less than 0.05 and was inconsistent. CONCLUSIONS : In conclusion, consistency was assessed by measuring the luminance value of the short tunnel of length 200 m in the Cheongju Sangju Expressway, and it was confirmed that the luminance of the road markings was not consistent with the tunnel and point. Finally, it is necessary to control night lightings on roads outside the tunnel or adjust lighting facilities in the tunnel to enhance the consistency of luminance.

Numerical model was developed that simulates radionuclide (3 H and 14C) transport modeling at the 2nd phase facility at the Wolsong LILW Disposal Center. Four scenarios were simulated with different assumptions about the integrity of the components of the barrier system. For the design case, the multi-barrier system was shown to be effective in diverting infiltration water around the vaults containing radioactive waste. Nevertheless, the volatile radionuclide 14C migrates outside the containment system and through the unsaturated zone, driven by gas diffusion. 3 H is largely contained within the vaults where it decays, with small amounts being flushed out in the liquid state. Various scenarios were examined in which the integrity of the cover barrier system or that of the concrete were compromised. In the absence of any engineered barriers, 3 H is washed out to the water table within the first 20 years. The release of 14C by gas diffusion is suppressed if percolation fluxes through the facility are high after a cover failure. However, the high fluxes lead to advective transport of 14C dissolved in the liquid state. The concrete container is an effective barrier, with approximately the same effectiveness as the cover.

절화 국화 ‘백마’를 재배하고 있는 관행농가와 스마트팜의 시설현황, 재배환경, 절화생육 및 경영성과를 비교 분석하였 다. 관행농가는 비닐하우스에서 토경으로, 스마트팜은 유리온 실에서 양액재배하고 있었다. 스마트팜은 광량, 온도, 습도, CO2, 풍속, 강우, 양액 pH와 EC 측정을 위한 센서들을 갖추어 자동제어하고 있었으며, 실시간으로 컴퓨터와 휴대전화 어플 리케이션을 이용하여 온실을 관리하고 있었다. 반면에 관행농 가는 환경 측정용 센서와 관비재배용 pH와 EC 센서들이 전혀 없었고, 모든 시스템들을 수동으로 작동하고 있었다. 시설 내의 주간과 야간온도는 관행농가에서 생육 적온보다 낮게 관리되고 있었다. 관행농가의 토양 EC는 3.2dS･m-1로 높게 나타나 절화 생육에 적합하지 않은 것으로 나타났고, 스마트팜은 1.1dS･m-1 로 적절하게 관리하고 있었다. 재배방법에 있어서 토양소독은 관행농가에서는 실시하지 않았으며, 스마트팜에서는 과산화수 소를 이용하여 토양소독을 실시하고 있었다. 그 외에 재배방 법은 큰 차이가 없었으나, 관행농가에서 응애가 많이 발생하 여 피해증상이 나타났다. 절화장, 화폭, 생체중, 엽록소 함량 등과 같은 절화 생육은 관행농가보다 스마트팜에서 더 양호한 것으로 나타났다. 경영성과 측면에서 1,000m2 기준으로 순이 익은 관행농가에서 -419천원이었고, 스마트팜은 4,484천원이 었으며, 생산량과 수취가격이 관행농가보다 스마트팜에서 각 각 22%와 52% 더 높은 것으로 나타났다. 이와 같은 절화의 생육과 경영성과의 차이는 스마트팜의 자동화 설비에 의해 정 밀 생육관리가 가능했기 때문이라고 판단되었다.

본 연구의 목적은 노인요양시설장의 서번트 리더십이 요양보호사들에게 조직기반자긍심과 조직공정성을 심어줌으로써 주요 변수와의 관계에 관한 연구 모델을 수립하고 분석하여 직무착근도에 영향을 미치는 요인을 탐구하고 실제적 함의를 제시하는 것이다. 본 연구에서는 노인요양시설장의 서번트 리더십이 직무착근도에 미치는 영향으로 구성된 연구 모델을 구축하였다. 이에 따라 노인요양시설장의 서번트리더십이 요양보호사의 직무착근도에 조직기반자긍심과 조직공정성에 미치는 영향을 확인하고 노인요양시설장의 서번트 리더십이 요양 보호사의 직무착근도에 미치는 영향에서 조절변수로 작용하는지 여부를 분석하였다. 또한, 각 변수의 하위 요인 간의 관계를 분석하여 이들 간의 영향 관계를 조사하였다.