털진드기 유충 (Acari: Trombiculidae)은 쯔쯔가무시증을 전파하는 주요 매개체이다. 털진드기 유충의 발생량 은 가을철에 증가하는 것으로 알려져 있지만, 환경 및 시기에 따라 발생 패턴이 다르게 나타날 수 있어 각 지역에 대한 조사가 필요하다. 이 연구는 충남 예산의 털진드기 발생 양상을 확인하기 위해 2017년부터 2023년까지 36-51 주차 (9-12월)에 걸쳐 현장 조사를 수행하였다. 논, 밭, 수로, 초지에 5m 간격으로 털진드기 트랩을 환경별로 5개씩 설치하여 채집하였다. 그 결과 총 3,257개체로 2017년 1,104마리, 2018년 785마리, 2019년 650마리, 2020년 160마 리, 2021년 139마리, 2022년 233마리, 2023년 186마리 채집되었다. 동정 결과 5속 12종이 확인되었으며 둥근혀털 진드기(Neotrombicula tamiyai)가 1,882개체(57.78%)로 우점도가 가장 높게 나타났다. 이러한 발생 양상에 관한 연구는 매개 질환의 예방 및 관리 전략 수립에 있어 중요한 기초 자료로 활용될 수 있으므로 지속적인 연구와 모니터링이 필요할 것으로 사료된다.

A tick survey was conducted to monitor ticks using tick traps attached dry ice method at each four sites in Ulju and Gimhae counties, Gyeongsangnam-do from April to November, 2023. Two species belonging to one genera were collected with tick traps. A total of 1,064 ticks were collected as Haemaphysalis longicornis (Trap Index; TI 11.0), Haemaphysalis flava (TI <0.1) in Ulju and A total of 843 ticks were collected as Haemaphysalis longicornis (Trap Index; TI 8.7), Haemaphysalis flava (TI 0.1) in Gimhae 2023. Haemaphysalis longicornis was the most frequently collected, representing 99.2% in Ulju, 98.9% in Gimhae. In the collection environments, a total number of 685, 268, 64, and 47 ticks were collected from a glassland, a copse, a mountain path, and a grave of Ulju a total number of 469, 216, 83, and 75 ticks were collected from a glassland, a copse, a Grave, and a mountain path of Gimhae respectively. In the results of the isolation of Severe Fever with Thrombocytopenia Syndrome (SFTS) from the ticks, no pathogens were detected from RNA of 101 pools (Ulju), 98 pools (Gimhae) of the ticks using a Polymerase Chain Reaction method in 2023.

쯔쯔가무시증은 급성 발열성 질환으로 Orientia tsutsugamushi을 보유한 털진드기 유충이 숙주를 흡혈할 때 전파된다고 알려져 있다. 국내에서는 한국전쟁 중에 첫 감염사례가 확인되었고 이후 지속적으로 보고되고 있다. 털진드기 유충이 성장하기 위해선 반드시 동물의 체액을 필요로 하기 때문에, 일시적으로 야생 설치류 등에 기생 하는데 봄철과 가을철에 주로 발생한다. 이처럼 인간에게 피해를 주는 털진드기의 분포와 병원체 유무를 조사하 기 위해, 2022년부터 2023년까지 경상북도 김천시에서 3월, 4월과 10월, 11월 5가지 환경(논, 밭, 수로, 야산, 저수 지)에서 Sherman trap을 이용하여 설치류 채집을 진행하였다. 2022년에는 총 18마리의 설치류가 채집되었고, Apodemus agrarius가 14마리(77.8%)로 가장 많이 채집되었다. 2023년에는 총 25마리의 설치류가 채집되었고, Apodemus agrarius가 19마리(76.0%)로 역시 가장 많이 채집되었다. 채집된 설치류 의 개체수는 2022년 대비 2023 년에 약 39% 증가하였다. 설치류에서 채집된 털진드기의 개체수를 조사한 결과, 2022년에는 총 1,862마리, 2023 년에는 3,243마리가 채집되어 전년 대비 약 74% 증가하였다. Chigger index 값을 살펴보았을 때 2022년에는 Apodemus agrarius에서 122.2, 2023년에는 Apodemus agrarius에서 169.7로 가장 높았다. 설치류에서 채집된 털진 드기의 반수에 대한 병원체 보유 여부를 확인하기 위해 최대 30마리씩 pooling하여 실험한 결과, 모두 음성으로 확인된 2022년과 달리 2023년 10월 3개, 11월 1개의 pool에서 쯔쯔가무시 양성이 확인되었다. 확인된 양성 샘플은 모두 저수지에서 채집된 개체로 해당 지역에 대한 지속적인 감시가 필요할 것으로 생각된다.

We analyzed trends of ants intercepted on imported plants and lumber over the past 30 years, using data extracted from the Pest Information System (PIS). There were 1,629 cases of about 112 species (5 subfamilies, 45 genera) from planting plants such as Asparagales, Alismatales, and Saxifragales, and 2,217 cases of about 86 species (7 subfamilies, 42 genera) from lumbers such as square lumber, pellets, and solid wood. For intercepted trends by continent, Asia was the most frequently detected at 91%, followed by Europe at 1% and North America at nearly 1%. Among Asian countries, Malaysia (27%) represented the highest number of interceptions, followed closely by Indonesia at 26%.

In the Republic of Korea, public health centers conduct vector mosquito control in accordance with infectious disease prevention laws. However, most public health centers have traditionally conducted periodic, uniform vector control across their respective regions without considering specific information on vector occurrence. In 2021, The Korea Diseases Control and Prevention Agency(KDCA) launched a control project to shift the paradigm toward mosquito control strategy based on mosquito surveillance data. In 2024, 18 local public health centers will participate in this project, which will progressively expanding so that it can be used countrywide. Local public health centers evaluate mosquito monitoring data using data gathered from Daily Mosquito Monitoring System(DMS), which enables them to pinpoint the best times and locations for vector control. Vector control activities carried out by local public health centers are computerized utilizing Vector Control Geographic Information System(VCGIS). Using the new control strategy with mosquito surveillance, the number of mosquito occurrences, number of control activities, and amount of insecticides have decreased compared to the periodic control activities. Based on mosquito surveillance data, it is anticipated that evidence-based mosquito vector control will offer a more efficient and effective means of mosquito control.

2023년 10월 국내 소 럼피스킨이 최초 유입이 확인된 이래, 4주만에 전국적으로 확산됨에 따라, 국가 인접국의 유입 가능한 가축질병 전파 매개체의 감시‧예찰을 확대하고 강화할 필요성이 높아지고 있다. 농림축산검역본부 (이후, 검역본부)는 해외 유입 가능한 가축전염병 전파 매개체와 가축에 대한 매개체성 질병 모니터링을 수행하 고 있다. 매개체 감시 사업은 ‘07년부터 전국 공항만을 중심으로 시작 후, ’17년부터는 가축농장으로 확대하여, 현재는 전국 공항만(계류장) 4개 지점와 가축 농장 32개 지점에서 모기와 등에모기 대상으로 수행 중에 있다. ‘17~’23년까지 모기는 6속 15종 236,752마리, Culex pipiens(25.8%), Aedes vexans(25.5%), Anpheles spp.(24.6%), Culex tritaeniorhynchus(12.0%)가 우점종으로 확인되었다. 등에모기는 20종 127,267마리, 우점종은 Culicoides(C.) puntctatus(40.0%), C. arakawae(37.5%)였다. C. tainanus 등 3개 종에서 블루텅바이러스(1종 가축전염병)가 검출 되고, ‘23년 럼피스킨 양성농장(7개소)의 채집된 침파리에서 원인체가 확인됨에 따라, 가축(동물)에 대한 매개체 의 감시‧예찰를 강화하기 위해 민-관 협력 지역별 가축질병 매개체 감시 센터 구축, 방제기술 개발 등 기후변화 대응 가축질병 연구개발에 박차를 가할 예정이다.

IPCC가 발간한 “지구온난화 1.5℃ 특별보고서에서는 전 지구적인 경제피해, 생태계, 종다양성에대한 피해를 언급하고 있다. 우리나라를 기준으로 보았을 때 평균 기온이 상승하는 경우 가장 우려되는 현상 중 한가지는 매개체들의 서식범위가 북쪽으로 확대되어지고 이에 따라 매개체가 옮기는 질병들에 대한 우려가 매우 크다. 특히 국내에 서식하지 않던 매개체들의 유입 위험이 증가되고 있다. 이에 질병관리청은 16개의 매개체감시거점 센터를 운영하고 있다. 하지만 최근 5년간 매개체 관련 과제 숫자는 감소하고 있어 매개체 감시의 중요성이 대두 되어질 필요가 있다.

As technologies have been more quickly developed in this 4th Industry Revolution era, their application to defense industry has been also growing. With these much advanced technologies, we attempt to use Manned-Unmanned Teaming systems in various military operations. In this study, we consider the Location-Routing Problem for reconnaissance surveillance missions of the maritime manned-unmanned surface vehicles. As a solution technique, the two-phase method is presented. In the first location phase, the p-median problem is solved to determine which nodes are used as the seeds for the manned vehicles using Lagrangian relaxation with the subgradient method. In the second routing phase, using the results obtained from the location phase, the Vehicle Routing Problems are solved to determine the search routes of the unmanned vehicles by applying the Location Based Heuristic. For three network data sets, computational experiments are conducted to show the performance of the proposed two-phase method.

In order to evaluate the integrity of the reactor pressure vessel, various test specimens necessary to identify irradiation embrittlement. The degree of irradiation embrittlement of the vessel material by neutrons, from the construction to the end of the life of the plant, is evaluated by a monitoring plan that called surveillance program (a series of all plans to analyze and evaluate embrittlement through various tests and analyzes by placing a test piece inside the reactor pressure vessel and taking out a piece at an appropriate time according to the number of operation years and taking necessary measures for safe operation). The reactor monitoring specimens for Kori Unit-1 are located by axis at S (57°), T (67°), R (77°), N (237°), P (247°) and V (257°). Six surveillance capsules are attached to the inside of the pressure vessel around the core and to the outside of the thermal shield. This surveillance container determines the withdrawal timing of the surveillance container according to the provisions of ASTM E185-82. In the monitoring test piece, there are neutron dosimeter materials to measure and evaluate the irradiated neutron flux, and Ni, Cu, Fe, Co-Al, Cd, and shielded Co-Al monitors are wired in the monitoring container. Each axial position is contained in a spacer hole. The neutron dosimetry monitor measures the neutron dose using isotopes produced by neutrons during operation of the reactor. The Al-Co specimen, which can evaluate the degree of radioactivity of cobalt, is located on the lower part of the specimen. The content of Co in the Al-Co specimen is 0.15%, and when expressed in ppm, it is 1,500 ppm, which is similar to the cobalt content of 1,414 ppm in the internal structure of the reactor vessel presented in NUREG-3474. If the radiation value of the Al-Co sample in the reactor monitoring specimen can be measured, the radiation value of the internal structure of the reactor can be indirectly compared. Since the monitoring specimen is located outside of the thermal shield, radiation should be less than that of the thermal shield. Korea Reactor Monitoring Technology performed gamma measurement on Al-Co specimens in 6 monitoring specimens, and although there are differences depending on the sample, it shows radioactivity values around the order of 1E+07 dps/g, or Bq/g. In conclusion, it is thought that using this measurement values, it is possible to verify the evaluation of internal structure radiation for Kori unit-1 decommissioning.

In light of recent social concerns related to issues such as water supply pipe deterioration leading to problems like leaks and degraded water quality, the significance of maintenance efforts to enhance water source quality and ensure a stable water supply has grown substantially. In this study, scan statistic was applied to analyze water quality complaints and water leakage accidents from 2015 to 2021 to present a reasonable method to identify areas requiring improvement in water management. SaTScan, a spatio-temporal statistical analysis program, and ArcGIS were used for spatial information analysis, and clusters with high relative risk (RR) were determined using the maximum log-likelihood ratio, relative risk, and Monte Carlo hypothesis test for I city, the target area. Specifically, in the case of water quality complaints, the analysis results were compared by distinguishing cases occurring before and after the onset of "red water." The period between 2015 and 2019 revealed that preceding the occurrence of red water, the leak cluster at location L2 posed a significantly higher risk (RR: 2.45) than other regions. As for water quality complaints, cluster C2 exhibited a notably elevated RR (RR: 2.21) and appeared concentrated in areas D and S, respectively. On the other hand, post-red water incidents of water quality complaints were predominantly concentrated in area S. The analysis found that the locations of complaint clusters were similar to those of red water incidents. Of these, cluster C7 exhibited a substantial RR of 4.58, signifying more than a twofold increase compared to pre-incident levels. A kernel density map analysis was performed using GIS to identify priority areas for waterworks management based on the central location of clusters and complaint cluster RR data.

Ricania sublimata are insects invaded in South Korea from China 2011. It has been happening continuously since invaded and It is established and continues to increase and occur in various crops such as persimmons, peaches, and apples. The nymphs and adults of R. sublimata causes damage by sucking the stems and leaves of trees. Yellow, blue, and white sticky traps (25x15cm) were installed in the 1000m2 Omija(Schizandra Chinesis Baillon) orchard september 2020 and the trap captures by color was investigated. In addition, yellow sticky traps were installed at heights of 1m, 1.7m, and 2m, and the trap captures according to the height was investigated. As a result of attraction according to the color of the sticky trap, yellow trap was the most attractive, blue and white traps had little attraction. And result of capture according to the yellow sticky trap height the most were caught at 1.7m height, followed by 1m and 2m in that order. Therefore, it is considered reasonable to investigate the density and monitoring of R. sublimata using yellow sticky trap.

SFTS(Severe Fever with Thrombocytopenia Syndrome)는 참진드기에 의해 전파되며 한국에서는 제3급 법정 감 염병으로 지정되어 있다. SFTS 감염 시 치사율이 높은 편이며, 현재까지도 백신과 치료제가 없다. 이러한 참진드 기의 발생 및 분포 조사와 SFTS 감염 여부를 확인하기 위해 2023년 4월부터 8월까지 김천시와 군위군 4곳의 환경 (무덤, 산길, 잡목림, 초지)에서 Dry ice trap으로 채집을 진행하였다. 김천시에서는 총 1,444마리의 참진드기가 채집되었으며, 잡목림에서 571마리(39.5%)로 가장 많이 채집되었다. 군위군에서는 총 3,914마리가 채집되었으 며, 무덤에서 2,701마리(69.0%)로 가장 많이 채집되었다. 참진드기의 종별 분포를 조사한 결과, 외형 동정이 어려 운 유충을 제외하고 김천시에서는 Haemaphysalis longicornis가 1,160마리(99.3%)로 가장 많이 채집되었고, 군위 군에서는 Haemaphysalis longicornis가 1,414마리(98.6%)로 역시 가장 많이 채집되었다. 채집된 참진드기의 SFTS 보유 여부를 확인하기 위하여 Nested PCR을 이용해 조사한 결과, SFTS를 보유한 참진드기는 발견되지 않았다. 본 조사에서는 SFTS에 감염된 참진드기 개체가 발견되지 않았지만, SFTS에 감염된 환자가 2016년부터 매년 160명 이상 발생하고 있으므로 체계적인 감시와 조사가 필요할 것으로 생각된다.

Surveillance plays a crucial role in safeguards. Reviewing surveillance data requires a significant number of inspection manpower. As the number of surveillance cameras increases, the demand for such manpower is expected to grow even more. Recently, in the field of security, there has been a development of deep learning models that automatically detect abnormal events from video images, and their usage is expanding. In this study, we used an AutoEncoder-based semi-supervised learning model, which can detect unexpected abnormal events, to detect anomalies in the UCSDped2 dataset and in simulating safeguards-related event videos taken at Dry Mockup facility of KAERI. To improve the model performance, we transformed the video images into two parts: the appearance part, which are sequences of video image frames, and the motion part, which are the pixel value differences of consecutive video frames. In addition, we added memory module to the bottle neck of the AutoEncoder model, and skip connection to enhance the model performance. To evaluate the model performance, we proposed a new evaluation index, which is adequate to the video images of safeguards surveillance in addition to the widely used AUC (Area Under the ROC Curve).