• 한국군사과학기술학회지
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• 제22권3호
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• pp.341-352
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• 2019

LTV(Light Tactical vehicle) operating in our military requires higher levels of performance and durability to withstand harsher conditions than ordinary vehicles, as they must travel on both rough-train and off-road as well as on public roads. Recently, developed light tactical vehicle is developed by a variety of test evaluations in order to satisfy ROC(Required Operational Capability) by the requirement military group. However, there is no standardized driving test condition for satisfying the durability performance of Korean tactical vehicle. Therefore, this study aims to provide basic data to establish reliable driving test conditions by analyzing the maneuver conditions and the driving data in order to select the representative drive course required. To do this, we analyzed the future operational environment, the area of operation analysis and the driving information of light tactical vehicle.

• 한국약용작물학회지
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• 제26권6호
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• pp.471-476
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• 2018

Background: Astragalus membranaceus belonging to the Leguminosae family is often utilized as a traditional medicine. The aim of this study was to elucidate the basic breeding information required to develop short stem A. membranaceus cultivars. Methods and Results: Roots of A. membranaceus advanced yield trial (AYT) lines were harvested in late October 2017. Root yield of six AYT lines were increased in a range of 8.9 - 74.8% compared with 'Aseong' as control (check variety). The height of seven AYT lines were shorter than that of 'Aseong'. In addition, stem diameter of nine AYT lines was thicker than that of 'Aseong'. Consequently, 1502-56, 1503-90, and 1510-80 were selected as elite lines for the development of short stem cultivars. HPLC analysis was perfromed to identify lines with high level active components such as calycosin-7-O-${\beta}$-D-glucoside and calycosin. The levels of both active components were higher in 1502-56, and 1503-90, but not in 1510-80 compared to 'Aseong'. In addition, 2,2-Diphenyl-1-picryl hydrazyl (DPPH) radical scavenging activity was higher in the 1502-56 compared to 'Aseong'. Considering these results, two AYT lines, 1502-56 and 1503-90 were selected as short stem lines with high calycosin-7-O-${\beta}$-D-glucoside and calycosin content. Conclusions: Taken together, Two short stem lines were identified in this study. In our future study, regional yield trial (RYT) will be conducted using these selected lines to develop new cultivars.

• 한국구조물진단유지관리공학회 논문집
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• 제23권1호
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• pp.154-162
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• 2019

세계적으로 지진과 같은 자연재해로 인한 대규모 피해가 증가하고 있다. 다양한 연구를 통하여 건물에 대한 내진성능은 확보되었으나, 비구조요소의 내진성능 확보 미흡으로 인하여 인명 피해 및 경제적 손실이 발생하고 있다. 비구조요소는 구조물에 설치되는 위치가 다양하고, 구조물의 위치에 따라 발생하는 진동특성이 다르므로 구조물의 위치별 응답스펙트럼이 필요하다. 또한 구조물의 형식과 구조물이 설치되는 위치에 따라 구조물에 발생하는 응답스펙트럼이 다르게 발생한다. 따라서 응답스펙트럼의 선정이 중요하므로 비구조요소에 작용하는 응답스펙트럼을 도출할 수 있는 명확한 방법이 필요하다. 본 논문에서는 응답스펙트럼을 도출하는 방법을 제안하였으며, 제안한 방법으로 국내에서 발생 가능한 지반응답스펙트럼과 구조시스템을 선정하여 구조해석을 수행하였다. 또한, 간단한 수식으로 응답스펙트럼을 도출하는 방법을 제안함으로서, 비구조요소의 내진시험에 필요한 응답스펙트럼을 생성할 수 있도록 하였다.

• 한국빅데이터학회지
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• 제3권2호
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• pp.113-121
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• 2018

본 논문은 농지에 구축된 LoRa기반 무선통신망으로부터 수집되는 다양한 환경 센싱 데이터를 스마트폰의 스크린에 증강시켜 시각화하는 증강현실 기반의 농업용 환경 정보 관리 시스템을 제안한다. 제안된 시스템은 사용자가 스마트폰 카메라로 농지를 비추면 그곳에 설치된 다양한 센서로부터 수집된 환경 정보를 스마트폰 스크린의 영상에 증강시켜 시각화한다. 따라서 기존 시스템이 농업 시설물을 검색한 후 센서를 선택하는 번거로운 과정을 거친 후 나열식으로 환경 정보를 제공하는 것에 비해 제안하는 시스템은 이러한 과정 없이 스마트폰의 카메라 영상에 증강되어 나타난다. 원하는 정보를 습득하는 방식이 그림이나 영상인 특징 때문에 보다 더 쉽게 정보를 제공받을 수 있어 농업 재배지의 편리한 모니터링 및 효율적인 관리가 가능하다.

• Asian-Australasian Journal of Animal Sciences
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• 제32권4호
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• pp.508-518
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• 2019

Objective: This research aimed to determine biological pathways and protein-protein interaction (PPI) networks for 305-d milk yield (MY), 305-d fat yield (FY), and age at first calving (AFC) in the Thai multibreed dairy population. Methods: Genotypic information contained 75,776 imputed and actual single nucleotide polymorphisms (SNP) from 2,661 animals. Single-step genomic best linear unbiased predictions were utilized to estimate SNP genetic variances for MY, FY, and AFC. Fixed effects included herd-year-season, breed regression and heterosis regression effects. Random effects were animal additive genetic and residual. Individual SNP explaining at least 0.001% of the genetic variance for each trait were used to identify nearby genes in the National Center for Biotechnology Information database. Pathway enrichment analysis was performed. The PPI of genes were identified and visualized of the PPI network. Results: Identified genes were involved in 16 enriched pathways related to MY, FY, and AFC. Most genes had two or more connections with other genes in the PPI network. Genes associated with MY, FY, and AFC based on the biological pathways and PPI were primarily involved in cellular processes. The percent of the genetic variance explained by genes in enriched pathways (303) was 2.63% for MY, 2.59% for FY, and 2.49% for AFC. Genes in the PPI network (265) explained 2.28% of the genetic variance for MY, 2.26% for FY, and 2.12% for AFC. Conclusion: These sets of SNP associated with genes in the set enriched pathways and the PPI network could be used as genomic selection targets in the Thai multibreed dairy population. This study should be continued both in this and other populations subject to a variety of environmental conditions because predicted SNP values will likely differ across populations subject to different environmental conditions and changes over time.

• 산업융합연구
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• 제15권2호
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• pp.27-36
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• 2017

본 연구에서는 카노 모형과 설문조사를 바탕으로 O2O 배달 앱의 서비스 품질 요인을 분석하고, 서비스 품질을 몇 가지 차원별로 분류하였다. 분석 결과, 일원적 품질요소로는 정확한 정보전달, 다양한 종류의 음식점, 지불방식의 다양성, 메뉴선택의 다양성, 불편사항 해결, 서비스의 친절도, 음식의 맛과 질, 위생과 청결, 간편 결제 시스템 등이었고, 매력적 품질요소로는 최신 정보 업데이트, 신뢰성 있는 이용후기, 다양한 주문방법, 신속한 배달, 브랜드 이미지, 할인 포인트 결제 및 적립 등이었다. 당연적 품질요소는 나오지 않았지만, 불편사항 해결이 당연적 품질요소에 가까운 것으로 나타났다. 무관심 품질요소로는 정보알림 서비스와 이벤트 및 판촉이었다. 본 연구결과는 O2O 배달 앱 서비스 업체들이 어떤 서비스 품질요소에 집중해야 하는지 전략을 수립하는데 많은 도움을 줄 수 있을 것으로 기대한다.

• 한국정보통신학회논문지
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• 제23권4호
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• pp.381-387
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• 2019

의학계에 다양하게 인공지능을 적용하는데 있어 한계는 우선적으로 해석자의 병증 이미지를 해석하는데 주관적 견해와 광범위한 해석자, 육체적 피로감 등이다. 그리고 병증마다 주석 달린 데이터 셋을 수집하는데 기간이 오래 걸린다는 것과 개발된 딥러닝 학습 알고리즘의 성능 저하가 없으면서도 충분한 훈련 데이터를 얻을지에 대한 의문이 있다는 것이다. 이에 본 논문에서는 여드름 데이터 셋을 기준으로 기본 이미지를 수집할 때 선정 기준과 수집 절차에 대해 연구하고, Sequential 구조로 딥 러닝 기법을 적용하여 적은 손실률(5.46%)과 높은 정확도(96.26%)로 데이터를 분류하는 모델을 제안한다. Keras에서 기본 제공하는 모델과 비교실험을 통해 제안 모델의 성능을 비교 검증한다. 향후 본 논문에서 제안하는 여드름 분류 모델에 유사 현상들 적용하여 의학 및 피부 관리 분야에도 적용 가능할 것으로 예상된다.

• 한국프랜차이즈경영연구
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• 제10권1호
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• pp.7-17
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• 2019

Purpose - Generally, the consumer's decision-making process for restaurant selection is simple and familiar. However, online information becomes important because the decision-making process of consumers becomes complicated in new restaurants and special situations. Because consumers can search for information online, information retrieval is now possible in selecting new restaurants. In particular, consumers often make decisions based on online information when making restaurant reservations. Research design, data, and methodology - All items were measured based on previous studies. The data were collected from customers who had visited the store by visiting the web page of the food service franchise within the last 3 months for the panel of the online survey institute. The questionnaires were surveyed from July 2 to July 11, 2018 for about 10 days. A mail and a message were sent to 2,000 people, and 310 people were asked to complete the questionnaire. Total of 303 data were used in the questionnaire, excluding 7 insufficient data. Results - The findings of this study are as follows: Consensus, vividness, and neutrality have positive effects on enjoyment. Consensus have positive effect on anxiety, but vividness and neutrality did not have significant effect on anxiety. Also, enjoyment has a positive influence on intention to visit, and anxiety has a negative influence on visit intention. Conclusions - First, franchise companies online advertising in a variety of ways, but they are mixed with other customers' WOM and offered to consumers. In this case, the information provided by the company may be distorted. Therefore, a restaurant franchise company needs to operate an official online channel to provide accurate information to its customers. Second, it is necessary to make contents so that other customers can participate in online channels of food service franchise companies. Third, food service franchise company should produce enough online contents to experience indirectly even if the customer does not visit the store directly. Fourth, food service franchise company needs to prepare a way for many customers to participate in many official contents.

• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.328-342
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• 2022

The Internet of Things (IoT) is a technology that offers lucrative services in various industries to facilitate human communities. Important information on people and their surroundings has been gathered to ensure the availability of these services. This data is vulnerable to cybersecurity since it is sent over the internet and kept in third-party databases. Implementation of data encryption is an integral approach for IoT device designers to protect IoT data. For a variety of reasons, IoT device designers have been unable to discover appropriate encryption to use. The static support provided by research and concerned organizations to assist designers in picking appropriate encryption costs a significant amount of time and effort. IoTES is a web app that uses machine language to address a lack of support from researchers and organizations, as ML has been shown to improve data-driven human decision-making. IoTES still has some weaknesses, which are highlighted in this research. To improve the support, these shortcomings must be addressed. This study proposes the "IoTES with Security" model by adding support for the security level provided by the encryption algorithm to the traditional IoTES model. We evaluated our technique for encryption algorithms with available security levels and compared the accuracy of our model with traditional IoTES. Our model improves IoTES by helping users make security-oriented decisions while choosing the appropriate algorithm for their IoT data.

• 수산경영론집
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• 제52권4호
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• pp.1-11
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• 2021

This study is to investigate the determinants of consumption expenditure by considering potential expenditure factors such as socioeconomic, fishing village tourism behavior, motivation for visits, and optional attributes of tourists at Muchangpo webfoot octopus and finespotted flounder festival in Boryeong. The analysis data are 300 questionnaires of visitors to the festival during the 2018 Muchangpo Mysterious Sea Road Webfoot Octopus and Finespotted Flounder Festival from March 17 to April 8, 2018. As a result of analyzing the factors of consumption expenditure of tourists to the festival in Boryeong, socioeconomic factors such as gender and residential groups outside Chungcheong-do have a positive (+) effect on consumption expenditure. Among the factors of fishing village tourism behavior, the only number of days of stay more than one night has a positive (+) effect on consumption expenditure. In addition, in the analysis of factors for motivation to visit the festival, fun/interest and simple rest/leisure have a significant positive (+) effect on expenditure whereas stress relief have a negative (-) effect on expenditure. In the analysis of the factors of festival selection attributes, tourism facilities has a significant positive (+) effect on expenditure, but natural scenery and excellent natural scenery show a significant negative (-) effect on expenditure. The main implications that can be obtained from the results of this study are as follows. First, it suggests that the promotion should be actively conducted outside of Chungcheong Province in order to achieve the original purpose of revitalizing the local economy from the Muchangpo webfoot octopus and finespotted flounder festival. Second, it indicates that there should be a variety of unique high-quality festival programs differentiated from other local festivals, promoting the existence of simple rest/leisure facilities rather than webfoot octopus boat fishing experiences or natural scenery (i.e., mysterious road and sunset) in order to attract festival tourists' spending at the Muchangpo webfoot octopus and finespotted flounder festival.