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B2B (vs. B2C) 비즈니스모델 혁신이 혁신성과에 미치는 상대적 효과
박예진,이채은,윤원주 한국벤처창업학회 2023 벤처창업연구 Vol.18 No.6
This study aims to empirically investigate the relative effects of business-to-business (vs. business-to-consumer) business model innovation (BMI) on innovation performance. The research examines the impact of three key components of BMI: 1. value creation, 2. value proposition, and 3. value capture, on innovation performance. The 2022 Entrepreneurship Survey data by the Korean Entrepreneurship Foundation was used to analyze 2,879 companies. An exploratory data analysis (EDA) including various categories such as industry, firm, CEO, and technology chracteristics was conducted to show the latest startup status in Korea. The results show that value creation of B2B (vs. B2C) firms has a more positive and significant impact on innovation performance. Whereas, value proposition of B2C (vs. B2B) firms was found to have a more positive and significant effect on innovation performance. Interestingly, value capture did not show any effects for either type of firms. Additionally, the study employed seemingly unrelated regression (SUR) analysis for robustness checks. These findings provide important insights about the relative effects of B2B-BMI (vs. B2C-BMI).
박예진,강신동,김재호 한국안전학회 2023 한국안전학회지 Vol.38 No.5
This study analyzes the operational characteristics of 311 aged and non-aged residual current circuit breakers (RCCBs) in low-voltage consumer contexts. It investigates the influence of external temperature and harmonics based on the rated current multiples. To simulate temperature variations, a convectional oven was used around the circuit breakers. Additionally, the generation of harmonic reference signals and data measurement for overcurrent experiments were conducted using NI SCXI, myDAQ, and LabVIEW. An observation revealed that as the ambient temperature increased, the operating time of RCCBs decreased in the time delay region. This was attributed to the faster response or bending of the bimetal, which is the tripping element. However, aged RCCBs encountered challenges with tripping outside the protective curve. The operating time of the circuit breakers exhibited an acceleration influenced by the order and content of harmonic currents, potentially leading to malfunctions. Aged RCCBs demonstrated faster operating times than their non-aged counterparts. However, the difference in operating time varied based on the manufacturer’s and operating environment of the RCCBs. Frequent malfunctions of RCCBs can result in power outages. In cases where these circuit breakers fail to operate, they can lead to secondary damages, including electrical fires and shocks. Consequently, it is imperative to consider the operating environment of RCCBs and provide appropriate replacement cycles to mitigate these risks.
실시간 재해 공간 DB 수집을 위한 구제역 방문조사 모바일 웹앱 구축
박예진,염재홍,Park. YeJin,Yom. Jae-Hong 한국방재학회 2013 한국방재학회논문집 Vol.13 No.6
2010년 11월말, 발생한 구제역은 초동 방역 조치가 늦어지면서 전국적인 피해가 발생하였다. 특히 전파매개체에 대한 파악이 늦어지면서 확산 범위를 키우게 된 것으로 분석되었는데 이는 다양한 구제역 전파 매개체에 대한 정보가 지역적으로 분산되어 있고 방역의 핵심 정보인 농장 방문 정보가 수집되지 않아 신속한 의사 결정 및 대책 수립의 한계가 나타났다. 따라서 신속하게 분산된 정보를 수집하고 실시간 분석이 가능하도록 공간적인 요소를 고려하는 것이 필요하다. 본 연구에서는 구제역 발생시나리오에 최적화된 위치기반 형태의 공간 DB(Database)를 설계하고, 이동성, 접근성, 휴대성의 이점이 있는 스마트폰을 통해 농가 방문자들의 이력정보를 실시간으로 DB화하는 구제역 방문조사 모바일 웹앱 시스템을 구축하였다. 구축된 시스템은 전파매개체에 대한 정보를 즉각적으로 파악하여 신속한 의사 결정과 방역 조치에 효율을 높이고자 한다. The end of November 2010, foot-and-mouth disease(FMD) is damage occurred nationwide due to delay of preventive measures. It was analyzed that the spread range raised delayed propagation medium. It was regionally distributed a variety of information about FMD propagation medium and appeared limit of rapid making-decision and measure establish because it was` t collected farm`s visit information about quarantine measures. Therefore it is necessary to real-time analysis and collect distributed information considering the elements of the spatial. The study was designed spatial DB optimized scenario of FMD occurrence based location and constructed FMD investigation mobile webapp system of real-time DB of information of farm`s visitor using moility, accessibility, portability benefits of smart phone. This system understand immediately farm`s visit information and can be improved rapid making-decision and quarantine measures.
고속철도 시설물의 자연재해 위험도 평가를 위한 재해위험지수 개발
박예진,한승룡,최상현 한국방재학회 2019 한국방재학회논문집 Vol.19 No.3
'Although efforts to quantify natural disasters to reduce disaster risk levels have been actively made, minimal research on railway facilities has been performed in Korea to date. In this study, to quantify disaster risk levels of natural disasters, such as hurricanes and earthquakes, a disaster risk index for high-speed railway facilities is presented, and natural disaster levels of domestic high-speed railway facilities are evaluated. The disaster risk index considers the four main factors including of hazard, exposure, vulnerability, and emergency response and recovery capability, and each main factor is composed of indicators that characterize that factor. Disaster risk indices are estimated for domestic high-speed railway lines including Gyeongbu, Honam, Gyeongjeon, Jeolla, Gangneung, and SRT lines, and they are quantified for regions determined around 51 stations. The weight for each main factor and indicator is determined using Delphi and the principal component analysis method, respectively. 현재까지 자연재해에 의한 피해를 정량화하고 재해위험도를 저감하기 위한 연구가 활발히 수행되어 왔으나, 국내의 경우 철도시설물에 대한 연구는 많지 않은 상황이다. 이 연구에서는 자연재해에 대한 고속철도의 재해위험도를 평가할 수 있는 재해위험지수를 개발하고 국내 고속철도 시설의 재해위험도를 평가하였다. 재해위험지수는 위험성, 노출성, 취약성, 대응복구성을 포함한 4개의 주요소를 고려하여 개발하였으며, 각 주요소의 특성은 세분화된 지표로 나타내었다. 재해위험지수는 경부선, 호남선, 경전선, 전라선, 강릉선, SRT를 포함한 국내 고속철도 선구의 특성을 고려하여 개발하였고, 51개 고속철도역사를 중심으로 설정한 권역을 기준으로 정량화하였다. 각 주요소와 지표에 대한 가중치는 각각 델파이 기법과 주성분 분석을 통하여 가중치를 산정하였다.
국가정원의 적정 면적 도출에 관한 연구 -Huff 모형 분석을 중심으로-
박예진,이용빈,배준규,박지원,박창근 전남대학교 지역개발연구소 2023 지역개발연구 Vol.55 No.3
This study aims to analyze the feasibility of area requirements, which serve as a constraint in designating National Gardens, as the importance and policy utility of gardens increase. The analysis encompasses a literature review, examination of overseas facilities, consideration of relevant standards, and the utilization of the Huff model to quantitatively assess suitable garden areas. In a previous study, an area of 22.3 hectares was proposed for a park involving physical activity, and an area of 25 hectares was recommended for therapeutic forests within national forests in major cities. Additionally, the AIHP mandates a minimum hosting area of 25 hectares for the International Horticultural Exhibition. The application of the Huff model indicates a minimum area of 41 hectares for achieving average attractiveness across 46 gardens nationwide, rising to 46 hectares with population weight considerations. Considering various factors, including prior research and international standards, the current 30-hectare standard for National Garden designation is deemed reasonable. Nevertheless, overseas national gardens prioritize history and function over area. Given the purpose of the National Garden and the value of gardens in metropolitan areas, where securing space is challenging, it appears necessary to supplement the details of National Garden designation and facility standards.