A Study on the Factors Influencing SMEs internet marketing Adoption

원동준,조형래 한국디지털콘텐츠학회 2014 한국디지털콘텐츠학회논문지 Vol.15 No.6

This study examines the key factors which influence the strategic consideration and intention of adoption of internet marketing of small-and-medium sized companies, based on theoretical consideration of innovation diffusion theory and previous studies related. The result of analysis shows that the degree of market competitiveness, customer dependency, the level of internet marketing knowledge and experience have significant effects on both of strategic consideration and adoption intention for internet marketing. Also, learning commitment has negative influence on strategic consideration only, while environmental dynamism does on adoption intention. Comprehensively, the findings implies that firms consider selection of internet marketing to reduce the severity of competitiveness and that firms which has more knowledge or experience aboutinternet marketing seems to consider selection of internet marketing through the perception of the effects of internet marketing or possible access to internet marketing. Based on the findings that the level of internet marketing knowledge and experience have much significant effects on both of strategic consideration.

탄소중립을 위한 분산 전력망의 미래

원동준 한국통신학회 2022 정보와 통신 Vol.39 No.8

재생에너지 확대를 통한 탄소중립 달성을 위해서는 전력망의 혁신이 필요하다는데 점차 공감대가 형성되고 있다. 본고에서는 탄소중립의 실현을 위한 전력망의 분산화 전략과 차세대 분산 전력망에 대해 알아보고 분산에너지 핵심 기술 개발 현황을 살펴본다. 또한 차세대 분산 전력망 설계의 핵심 원칙을 제시하고, 이를 토대로 에너지 시스템의 미래를 고찰해 보도록 한다.

넓은 다이내믹 레인지의 유연 촉각센서 적용을 위한 PVP 유전층과 PDMS 접착력 검증

원동준,허명,김준원 한국로봇학회 2016 로봇학회 논문지 Vol.11 No.3

In this paper, we fabricate arrayed-type flexible capacitive touch sensor using liquid metal (LM) droplets (4 mm spatial resolution). Poly-4-vinylphenol (PVP) layer is used as a dielectric layer on the electrode patterned Polyethylene naphthalate (PEN) film. Bonding tests between hydroxyl group (-OH) on the PVP film and polydimethylsiloxane (PDMS) are conducted in a various O2 plasma treatment conditions. Through the tests, we can confirm that non-O2 plasma treated PVP layer and O2 plasma treated PDMS can make a chemical bond. To measure dynamic range of the device, one-cell experiments are conducted and we confirmed that the fabricated device has a large dynamic range (~60 pF).

Topological Locating of Power Quality Event Source

원동준,문승일 대한전기학회 2006 Journal of Electrical Engineering & Technology Vol.1 No.2

- This paper proposes a topological locating algorithm to determine the location of thepower quality event source. This algorithm makes use of the information on the topology of the monitored network and on the direction of PQ events. As a result, the bus incidence matrix is modified using monitor location and the direction matrix is constructed. With this information, the algorithm determines the suspected locations of the PQ events. To reduce suspicious areas, it utilizes event cause and related equipment. In case of line fault event, it calculates the distance from the monitor to the location of event source. The overall algorithm is applied to the IEEE test feeder and accurately

실제 운행 데이터 분석을 통한 전기자동차 성능 및 경제성 검증

원동준(Dongjun Won) 대한전기학회 2018 대한전기학회 학술대회 논문집 Vol.2018 No.11

CFD 를 이용한 덕트형 AUV 형상 최적설계

원동준(Won, Dong-Joon),허영진(Heo, Youngjin),정한교(Jung, Han-Kyo),김진현(Kim, Jinhyun) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11

The purpose of this study is to examine the most ideal design of the external form and the internal figure for the duct type AUV using the CFD. The most important factor when designing an AUV is to consider drag force and thrust because these determine the power-efficiency. Therefore, to design an ideal AUV various factors which affect drag force and thrust were drawn. Also to minimize the amount of experiments and analyze the CFD efficiently the experiments design was used. Through this process design factors were found which minimizes the drag force and thrust influence on the Duct type AUV.

기계학습을 활용한 경기도 산업단지 미세먼지 예측

원동준(Dong-Jun Won),김선겸(Sun-Kyum Kim),김영훈(Yeonghun Kim),송규원(Gyuwon Song) 한국정보과학회 2021 정보과학회논문지 Vol.48 No.7

최근 미세먼지의 다양한 예측 모델들을 통한 연구가 이루어지고 있지만 현재 PM10 농도 예측에 치중되어 있어 PM2.5 농도를 예측할 수 있는 모델 개발이 필요한 상황이다. 본 논문은 최근 약 2년간의 반월시화국가산업단지의 대기질, 기상, 교통 데이터를 수집하여 미세먼지(PM2.5)와 미세먼지(PM10), 이산화황(SO₂), 이산화질소(NO₂), 일산화탄소(CO), 오존(O₃), 온도, 습도, 풍향, 풍속, 강수량, 도로 구간별 차량속도 변수간의 상관관계 분석 및 회귀분석을 통해 변수의 유의성을 파악하고, 산업단지의 시간대별 PM2.5를 예측하는 데 활용하였다. 인공지능 기반의 Random Forest, XGBoost, LightGBM, Deep neural network과 Voting 모델을 통해 산업단지의 시간별 PM2.5 농도를 예측하고, RMSE를 기준으로 비교분석을 진행하였다. 예측 결과 RMSE는 각각 6.27, 6.41, 6.22, 6.64, 6.12로 각 모델 모두 에어코리아에서 예측하는 모델의 10.77에 비해 매우 높은 성능을 보여주었다. Recently, research on fine dust has been conducted through various prediction techniques. However, currently the research focused on PM10 concentration prediction, and thus it is necessary to develop a model capable of predicting PM2.5 concentration. In this paper, we have collected air quality, weather, and traffic of the Banwol Shihwa National Industrial Complex in the recent two years. The significance of the variable been identified through correlation analysis and regression analysis among PM2.5 and PM10, SO₂, NO₂, CO, O₃, temperature, humidity, wind direction, wind speed, precipitation, road section vehicle speed for each vehicle. Next, the data has been used to predict PM2.5 concentration based on time in the industrial complex. Through the artificial intelligence techniques, Random Forest, XGBoost, LightGBM, Deep neural network and Voting models, PM2.5 concentration industrial complexes been predicted on an hourly basis, and comparative analysis been conducted based on RMSE. As a result of prediction, RMSE was 6.27, 6.41, 6.22, 6.64, and 6.12, respectively, and each technique showed very high performance compared to 10.77 of the technique predicted by Air Korea.

EMTP 모의를 통한 PWM 방식 UPFC의 동적 특성 분석 및 전력시스템 적용에 관한 연구

元東俊(Dong-Jun Won),韓學根(Hak-Guhn Han),李宋根(Song-Keun Lee),文承逸(Seung-Il Moon) 대한전기학회 2000 전기학회논문지A Vol.49 No.12

전력계통 디지털 트윈 기술 동향

원동준(Dongjun Won) 대한전기학회 2021 전기의 세계 Vol.70 No.6

전력계통의 디지털 트윈은 실시간성과 데이터 기반 모델링 및 예측 기반 운영의 측면에서 차별성을 가지며, 재생에너지 증가에 따른 불확실성에 선제적으로 대응하는 미래 전력망 구축을 가능케 할 것이다. The unique characteristics of the power system digital twin are real-time, data-driven modeling and prediction-based proactive operations. It can establish the future power system that proactively responds to the uncertainties of renewable energy.

실험적 급성 허혈성 신부전에서 Verapamil 이 혈중 Polyamine 동태에 미치는 영향

원동준(Dong Jun Won),권현민(Hyun Min Kwon),김용섭(Yong Seop Kim),구자룡(Ja Ryong Gu),권영주(Young Ju Kwon),조원용(Won Yong Cho),김형규(Hyung Kyu Kim) 대한내과학회 1991 대한내과학회지 Vol.40 No.6

N/A It has been proposd that calcium entry from an external medium increases intracellular free calcium to toxic levels during ischemic acute renal failure, and verapamil (ARF) has been suggested as the agentblocking calicium entry into renal cells and protecting renal function during ischemic injury. Polyamines, anorganic cations that play various roles in normal cellular proliferation and differentiation, accumulate in renal failare. Alsa it has been suggested tht the synthesis and metabolism of polyamine are influence by acute changes of the general condition, such as acute renal failure, and are mediated by a calcium influx into the cells. The study was designed to study the protective effects of systemic verapamil pretreatment on renal function and the influence on polyamine metabolism in experimental ischemic ARF in cats. For these purpose, the experimental animals were divided into 2 groups. While Group I (n=5) was an ischemic ARF model by renal artery clamping for 60 minutes, Group II (n=5) was ischemic ARF with systemic verapamil (5 ml/min/kg) pretreatment. The creatinine clearance and plasma and urinary polyamine were measured in each group before and after the renal artery clamp. The results were as follows: 1) Creatinine clearance before and after the renal artery clamp were 10.64±7.18 ml/min/kg and 2.09±1. 70 ml/min/kg in Group I, 4.47±3.38 ml min/kg and 0.60±0.79ml/min/kg in Group II, respectively, So creatinine clearance decreased more significantly in Group II campared with Group I. 2) Plasma polyamine increased after ischemia in Group I. In group I, plasma levels of putrescine, spermidine, and spermine before ischemia were 4.75±0.40 nmol/ml, 0.69±0.09 nmol/ml, and 0.83±0.63 nmol/ml, were elevated to 7.17±2.91 nmol/ml, 9.83±1.46 nmol/ ml, and 2.64±1.14nmol/ml after ischemia. But in Group II, the plasma level of polyamine was not changed, and especially, spermine decreased significantly from 0.83±0.27 before ischemia to 0.49±0.23 nmol/ml after ischenmine (p=0.033). 3) Urine polyamine excretion decreased after ischemia in Group I and Group II. In Group II, urinary excretion of spermidine and spermine before ischemia, 0.13±0.10 nmol/min and 0.17±0.13nmol/min, decreased after ischemia to 0.01±0.01nmol/min (p=0.019) and 0.032±0.26 nmol/min (p=0.0257). 4) In renal tissue, spermine content vas highest. In Group II, preischemic spermine were 397.20 nmol/g and increased to 646.66nmol/g after ischema, But there were no significant changes in the polyamine contents in Group II. From these data, it was suggested that systemic verapamil pretreatment exerts no protective effect on ischemic ARF. Plasma polyamines are elevated in ischemic ARF, and verapamil may protect these elevations.