• 농업과학연구
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• 제50권4호
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• pp.829-840
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• 2023

Various chemical pesticides are used to control diamondback moths, Plutella xylostella, which are agricultural pests that occur in cruciferous crops worldwide and cause economic losses. However, due to pesticide misuse, resistance to P. xylostella is consistently reported domestically and internationally. Therefore, we aimed to monitor and map regional resistance to devise efficient and economical control methods for P. xylostella in Korea. This study selected eight highly used insecticides among those registered against P. xylostella. P. xylostella were collected from three cities in the Gyeonggi and Yeongnam Provinces to evaluate insecticide resistance. As a result of experiments with populations collected from Yeoju, Gyeonggi Province, resistance ratios were 114.88, 54.75, 119.00, and 64.00 times higher than the susceptible population with methoxyfenozide, indoxacarb, cyantraniliprole, and fluxametamide, respectively. The resistance ratios of the Yongin population in Gyeonggi Province were 166.33 times with cyantraniliprole and 195.25 times with fluxametamide higher than the susceptible population. The Pocheon population in Gyeonggi Province showed a resistance ratio 283.23 times higher than methoxyfenozide. As a result of experiments with populations collected from Gimhae and Sangju, Yeongnam Province, the resistance ratios of the Gimhae population were 80.97, 138.00, and 89.50 times higher than the susceptible population with methoxyfenozide, cyantraniliprole, and fluxametamide, respectively. Meanwhile, the resistance ratios of the Sangju population were 85.83, 224.67, and 303.25 times higher than the susceptible population with methoxyfenozide, cyantraniliprole, and fluxametamide, respectively. The Yeongnam Province Tongyeong population showed a resistance ratio 367.28 times higher to methoxyfenozide.

• 한국콘텐츠학회논문지
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• 제16권6호
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• pp.706-716
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• 2016

최근 높아진 삶의 질에 대한 사회적 인식으로 여가에 대한 관심이 늘어나고 있다. 이에 따라 문화와 체육과 관련된 다양한 자원을 통해 해당 도시를 성장시키고자 하는 정책적 관심이 증가하고 있다. 본 연구는 이러한 시점에서 지역 내 문화체육자원이 도시성장에 미치는 영향을 확인하고, 이를 통한 정책적 방향을 살펴보는 것을 목적으로 하고 있다. 본 연구는 전국 228개 시군구를 대상으로 문화체육자원을 중심으로 사회 교통 공간성격의 범주에 포함되는 도시의 다양한 개별자원 지표를 이용해 지역의 인구, 산업, 재정측면의 성장에 있어서의 영향관계를 준로그 다중회귀분석을 사용해 파악하였다. 분석 결과, 문화체육자원을 포함한 다양한 지역 내 자원들은 해당 도시의 성장에 중요한 영향을 미치고 있는 것으로 나타났다. 특히 인구성장 측면에서는 공공체육시설 및 프로스포츠시설의 확충을, 산업성장 측면에서는 프로스포츠시설의 유치를 통한 지역 내 소비증가를, 재정건전성 측면에서는 연관산업에 대한 파급효과가 큰 프로스포츠시설 유치를 적극적으로 고려할 필요가 있다는 결과를 도출하였다. 이러한 결론을 통해 본 연구는 생활체육을 바탕으로 한 삶의 질 환경 조성 및 산업기반으로서의 문화스포츠 기반조성은 도시성장에 있어 중요하며, 이러한 자원을 활용한 도시성장 정책은 차세대 전략으로 지방정부가 관심을 가질만한 충분한 가능성이 있음을 확인하였다.

• 문화기술의 융합
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• 제9권1호
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• pp.101-109
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• 2023

코로나 19 자영업자비상대책위원회가 발표한 자료에 따르면 지난 2년 동안 코로나19로 인한 소상공인 매출의 95.6%가 감소했으며, 방역을 위한 사회적 거리두기로 인해 피해는 더욱 커졌다. 하지만 최근 사회적 거리두기 지침이 전부 해제되고 상권이 활기를 띠면서 서울시는 코로나19의 장기화로 한계에 부딪혀 폐업하였던 소상공인이나 예비 창업자를 위해 안정적으로 사업을 재기할 수 있도록 로컬브랜드 상권 육성사업을 추진하고 있다. 따라서 본 연구는 서울시 로컬브랜드 상권 육성사업의 대상으로 선정된 골목상권 5곳 중 창업자에게 적합한 골목상권을 추천하는 모델을 설계했다. 이 연구의 서울시 로컬브랜드 골목상권 추천시스템은 Xgboost를 이용한 인구관점 모델과 Decision tree를 이용한 상권특징 모델을 합쳐 해당 상권의 주요 인구 연령대와 주요 업종을 추천한다.

• 대한교통학회지
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• 제23권4호
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• pp.31-36
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• 2005

도시나 지역의 교통안전도를 평가할 때 인구수, 자동차대수, 도로연장 등 다양한 모집단을 활용한 평가지수가 산정되며, 일반적으로 산정결과는 모집단에 따라 다르다. 이것은 모집단 각각이 교통사고에 주는 영향이 다르기 때문에 발생하는 현상으로 정책결정자의 의사결정에 장애가 되어 왔다. 본 연구에서는 교통안전도 평가지수의 산정 시, 다양한 모집단을 복합적으로 고려하는 통계학적인 방법을 개발하고, 개발된 방법을 활용하여 수도권 25개 중 소도시의 교통안전도 평가지수를 산정하였다. 평가지수 산정결과, 본 연구에서 제시한 방법은 모집단을 복합적으로 고려하여 안전도를 평가할 수 있다는 것을 확인하였다. 산정된 평가지수에 대한 분석결과, 인구수와 도로연장을 복합적으로 고려한 안전도 평가지수 I(X)와 인구수를 기반한 평가지수 F(P), 도로연장을 기반한 평가지수 F(L)와의 상관계수는 각각 0.68, 0.92로 나타났다. 이러한 결과는 모집단의 종류에 따라 안전도 평가지수가 크게 달라지는 문제점이 본 연구에서 제시한 방법에 의해서 상당부분 극복 될 수 있다는 것으로 해석할 수 있다. 본 연구에서 제시한 방법 및 안전도 평가지수는 중 소도시 혹은 지역단위의 안전정책의 수립에 활용될 수 있을 것으로 판단된다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권11호
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• pp.4502-4518
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• 2015

Fisher linear discriminant analysis (LDA) is one of the most popular projection techniques for feature extraction and has been widely applied in face recognition. However, it cannot be used when encountering the single sample per person problem (SSPP) because the intra-class variations cannot be evaluated. In this paper, we propose a novel method called local similarity based linear discriminant analysis (LS_LDA) to solve this problem. Motivated by the "divide-conquer" strategy, we first divide the face into local blocks, and classify each local block, and then integrate all the classification results to make final decision. To make LDA feasible for SSPP problem, we further divide each block into overlapped patches and assume that these patches are from the same class. To improve the robustness of LS_LDA to outliers, we further propose local similarity based median discriminant analysis (LS_MDA), which uses class median vector to estimate the class population mean in LDA modeling. Experimental results on three popular databases show that our methods not only generalize well SSPP problem but also have strong robustness to expression, illumination, occlusion and time variation.

• 보건의료산업학회지
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• 제8권2호
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• pp.11-22
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• 2014

This study purposed to analyze the regional variation of the local-out rates of inpatient services. Multiple data sources collected from National Health Insurance Corporation and statistics Korea were merged to produce the analysis data set. The unit of analysis in this study was city, Gun, Gu, and all of them were included in analysis. The dependent variable measured the local-out rate of inpatient cost in study regions. Local environments were measured by variables in three dimensions: provider factors, socio-demographic factors, and health status. Along with the traditional ordinary least square (OLS) based regression model, geographically weighted regression (GWR) model were applied to test their effects. SPSS v21 and ArcMap v10.2 were applied for the statistical analysis. Results from OLS regression showed that most variables had significant relationships with the local-out rate of inpatient services. However, some variables had shown diverse directions in regression coefficients depending on regions in GWR. This implied that the study variables might not have consistent effects and they may varied depending the locations.

• The Journal of Asian Finance, Economics and Business
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• 제8권5호
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• pp.795-806
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• 2021

This study analyzes and assesses the effect of good governance consisting of accountability, transparency, and participation on the financial performance of Pare-Pare City local government moderated by the basic values of Siri culture in the form of Lempu (honesty), Amaccangeng (intelligence), and Awaraningeng (courage). The population of this research is 200 local government employees (respondents). The results of data analysis showed that accountability and participation variables had no significant effect on the financial performance of the Pare-Pare City local government. However, the transparency variable has an influence on local government financial performance. It is hoped that all these 3 variables (accountability, transparency, and participation) will have a significant effect on local government financial performance. To achieve this, it is necessary to apply cultural values that exist in society so that cultural values can provide greater guidance in the management of regional finances. The results provide a better understanding of the importance of Siri's cultural value in the implementation of public services to the community. With Siri's cultural values in the form of Lempu, Amaccangeng, and Awaraningeng embedded in their behavior, government employees can improve performance and avoid deviant behavior or corruption. The novelty of this research is a form of analysis by using local cultural values (the basic values of Siri culture) as the moderating variable.

• Journal of Dental Anesthesia and Pain Medicine
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• 제21권1호
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• pp.41-47
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• 2021

Background: This study was designed to compare the efficacy of DentalVibe against 2% lidocaine gel in reducing pain during the administration of local anesthetic injection in the adult population. Methods: This was a split-mouth open-label, randomized, controlled clinical study conducted in the Department of Oral and Maxillofacial Surgery of a dental institute. Fifty patients who were scheduled for bilateral dental extractions requiring an inferior alveolar nerve block were enrolled in the study. Site A (n = 50) was coated with 2% lidocaine gel followed by a local anesthetic injection, and DentalVibe with local anesthetic injection was used for Site B (n = 50). The primary outcome was pain, which was recorded immediately after the administration of anesthetic injection using the Visual Analogue Scale [VAS 0 - 10]. Results: The VAS pain scores ranged from 4 to 10 for site A and 0 to 6 for site B. Comparison between the two sites showed a statistically significant difference [Mann-Whitney U test value = 51.50, P < 0.001] favoring site B. Conclusion: This study showed that DentalVibe reduces pain during injection of local anesthesia compared to topical anesthetic gel.

• 한국물환경학회지
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• 제29권3호
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• pp.377-382
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• 2013

Enriching anammox bacteria (AMX) in a lab-scale granular sequencing batch reactor using local digester centrate, we observed the significant enrichment of the filamentous-like bacterial population. These bacteria were revealed as novel bacterial species (termed CHL) belonging to Chlorobi/Bacteroidetes phyla via Denaturing Gradient Gel Electrophoresis (DGGE). Further, niche differentiation of AMX and CHL quantification was observed in granule and filament biomass, suggesting AMX was dominant in the granule and CHL was dominant in the filament. Therefore, it was confirmed the structural role of CHL was indeed to aid the granule formation of the AMX. In parallel, the physiological role of CHL was suspected to degrade biopolymers in the digester centrate using nitrate as an electron acceptor.

• 한국정밀공학회지
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• 제16권1호통권94호
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• pp.116-124
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• 1999

In most conventional design optimization of dynamic system, design sensitivities are utilized. However, design sensitivities based optimization method has numbers of drawback. First, computing design sensitivities for dynamic system is mathematically difficult, and almost impossible for many complex problems as well. Second, local optimum is obtained. On the other hand, Genetic Algorithm is the search technique based on the performance of system, not on the design sensitivities. It is the search algorithm based on the mechanics of natural selection and natural genetics. GA search, differing from conventional search techniques, starts with an initial set of random solutions called a population. Each individual in the population is called a chromosome, representing a solution to the problem at hand. The chromosomes evolve through successive iterations, called generations. As the generation is repeated, the fitness values of chromosomes were maximized, and design parameters converge to the optimal. In this study, Genetic Algorithm is applied to the actual dynamic optimization problems, to determine the optimal design parameters of the dynamic system.