• 한국정보통신학회논문지
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• 제20권8호
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• pp.1517-1523
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• 2016

최근 세계 및 아시아 의료관광 시장이 활성화 되고 있다. 글로벌 의료관광 산업은 최소의 비용으로 보다 높은 수준의 의료서비스도 받으면서 관광도 즐기려는 소비자들이 증가하고 있다. 의료관광을 찾는 소비자들은 자신에게 맞는 맞춤형 서비스를 찾고 있는 성향으로 변화하고 있다. 소비자는 자신에게 맞는 의료서비스와 관광 정보를 제공받고, 병원에서는 외국인 환자 유치와 통역 문제를 해결하고, 통역 관광가이드는 소비자와 병원에 맞춤형 정보를 제공하여 서로에게 필요한 서비스를 매칭 하는 것이 필요하다. 본 논문에서는 병원, 의료관광을 찾는 사용자, 통역 관광가이드를 매칭 하는 글로벌 클리닉 기반의 O2O(Offline to Online) 매칭 플랫폼을 제안한다. 소비자가 의료서비스와 관광에 대한 경험치를 의료관광에 대한 소비자의 맞춤형 홍보 방법에 대해 제안한다.

• 한국정보시스템학회지:정보시스템연구
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• 제29권4호
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• pp.25-43
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• 2020

Purpose The purpose of this study is to gradually increase the use of O2O services in recent years. It is a part of our daily lives, and accommodation/leisure is a part of the growing use of O2O services. Based on various prior research related to O2O service, the Commission intends to establish the justification and necessity of empirical research and to establish the relationship between O2O service impact factors and practical value, customer satisfaction and reuse intention. Design/methodology/approach This study analyzed what factors affected the intention of re-use of domestic accommodation O2O services. This research model was proposed based on the preceding research paper, and reliability, diversity, economics, leisure, safety and personalization were used as independent variables, practical value and customer satisfaction are parameters, and reuse intent is composed of dependent variables. Within the last year, users of domestic accommodation applications were selected as users who used domestic accommodation applications more than once, and data of domestic accommodation application users were analyzed using the SPSS 25.0 and AMOS 20.0 programs. Findings The results of this study show that economic efficiency, safety and personalization have significant effects on practical values in the relationship between O2O service impact factors and their impact on practical values. On the other hand, reliability, diversity and leisure were found to have no significant impact on practical values. In terms of O2O service impact factors and their impact on customer satisfaction, leisure and safety have significant effects on customer satisfaction. On the other hand, reliability, diversity, economics, and individualization have shown no significant impact on customer satisfaction. Practical values, parameters, customer satisfaction, and re-use intent, which are dependent variables, were also shown to have significant effects on practical values and customer satisfaction in the relationship.

• 예술인문사회 융합 멀티미디어 논문지
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• 제6권3호
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• pp.291-300
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• 2016

스마트 디바이스와 사물 인터넷의 등장은 온라인과 오프라인의 경계를 허무는 O2O 서비스의 등장으로 이어졌다. 이는 오프라인 시장에 온라인 서비스의 강점이 덧붙여지면서 오프라인 공간이 디지털화가 됨을 의미하며, 오프라인 산업의 판도를 바꾸고 있다. 이러한 오프라인 시장의 변화 양상과는 다르게 전시 산업은 오프라인 산업에서 꾸준한 성장세를 보이고 있으나, 전시 산업 또한 O2O 서비스와의 접목으로 새로운 부가가치를 창출이 가능한 것으로 보았다. 본 논문은 코엑스에서 열린 '2015 서울 디자인 페스티벌'에서 20명을 대상으로 설문을 진행하였다. 설문은 공간 구조에 대한 분석 용도 및 기계학습을 위한 데이터 세트를 생성하는데 사용되었다. 본 논문은 기존의 공간 구조에 대한 분석연구가 가진 문제점을 파악하여 공간 구조에 대한 새로운 분석 방법을 제안하였다. 또한 생성된 데이터 세트를 기반으로 기계학습을 진행하여 전시 공간 내 O2O 서비스 배치를 위한 평가 모델을 제안한다.

• 한국환경농학회지
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• 제31권3호
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• pp.205-211
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• 2012

BACKGROUND: Generally, nitrogen (N) fertilization higher than the recommended dose is applied during vegetable cultivation to increase productivity. But higher N fertilization also increases the concentrations of nitrate ions and nitrous oxide in soil. In this experiment, the impact of N fertilization was studied on nitrous oxide ($N_2O$) emission to standardize the optimum fertilization level for minimizing $N_2O$ emission as well as increasing crop productivity. Herein, we developed $N_2O$ emission inventory for upland soil region during red pepper and Chinese milk vetch cultivation. METHODS AND RESULTS: Nitrogen fertilizers were applied at different rates to study their effect on $N_2O$ emission during red pepper and Chinese milk vetch cultivation. The gas samples were collected by static closed chamber method and $N_2O$ concentration was measured by gas chromatography. The total $N_2O$ flux was steadily increased due to increasing N fertilization level, though the overall pattern of $N_2O$ emission dynamics was same. Application of N fertilization higher than the recommended dose increased the values of both seasonal $N_2O$ flux (94.5% for Chinese cabbage and 30.7% for red pepper) and $N_2O$ emission per unit crop yield (77.9% for Chinese cabbage and 23.2% for red pepper). Nitrous oxide inventory revealed that the $N_2O$ emission due to unit amount of N application from short-duration vegetable field in fall (autumn) season (6.36 kg/ha) was almost 70% higher than that during summer season. CONCLUSION: Application of excess N-fertilizers increased seasonal $N_2O$ flux especially the $N_2O$ flux per unit yield during both Chinese cabbage and red pepper cultivation. This suggested that the higher N fertilization than the recommended dose actually facilitates $N_2O$ emission than boosting plant productivity. The $N_2O$ inventory for upland farming in temperate region like Korea revealed that $N_2O$ flux due to unit amount of N-fertilizer application for Chinese cabbage in fall (autumn) season was comparatively higher than that of summer vegetables like red pepper. Therefore, the judicious N fertilization following recommended dose is required to suppress $N_2O$ emission with high vegetable productivity in upland soils.

• 한국정보통신학회논문지
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• 제25권11호
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• pp.1457-1462
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• 2021

코로나 팬데믹 이후 비대면 주문 결제가 뉴 노멀로 자리잡고 있다. BLE 비콘은 블루투스 페어링 없이 70m이내의 범위에서 저전력 무선 통신을 지원하는 기술로, 실내측위에 특화되어 있다. 따라서 B2C(Business to Consumeri), B2B(Business to Business)서비스를 넘어 O2O(Online to Offline)서비스를 구축하고 제공하는데에 적합하다. 그러나 비콘은 장거리 무선 통신을 지원하는 wifi에 비해 구축된 플랫폼이 적어서 이용률이 낮은 편이다. 이에 본 논문에서는 BLE 비콘을 활용한 O2O 서비스 플랫폼을 설계 및 제안함으로써 이전보다 편리한 비대면 관련 서비스 제공을 목적으로 한다. 비콘을 스캐닝할 때, 단순히 비콘이 가진 광고 데이터를 수신하는 것만이 아니라 사용자 단말기와 비콘간 실제거리가 정확히 산출되도록 한다. 해당 O2O 서비스 플랫폼은 정확한 위치 파악을 통해 쿠폰이나 할인혜택 같은 상점정보, 박물관 전시물 정보, 교통정보 등을 적시적소에 사용자에게 제공할 수 있게 될 것이다. 비콘 거리 측정실험은 비콘 측위의 특징인 실내 공간을 가정하고 수행되었다.

• Journal of Information Processing Systems
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• 제16권2호
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• pp.377-393
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• 2020

Freight management systems require a new business model for rapid decision making to improve their business processes by dynamically analyzing the previous experience data. Moreover, the amount of data generated by daily business activities to be analyzed for making better decisions is enormous. Online-to-offline or offline-to-online (O2O) is an electronic commerce (e-commerce) model used to combine the online and physical services. Data analysis is usually performed offline. In the present paper, to extend its benefits to online and to efficiently apply the big data analysis to the freight management system, we suggested a system architecture based on O2O services. We analyzed and extracted the useful knowledge from the real-time freight data for the period 2014-2017 aiming at further business development. The proposed system was deemed useful for truck management companies as it allowed dynamically obtaining the big data analysis results based on O2O services, which were used to optimize logistic freight, improve customer services, predict customer expectation, reduce costs and overhead by improving profit margins, and perform load balancing.

• 한국토양비료학회지
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• 제46권6호
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• pp.463-468
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• 2013

The level of nitrous oxide ($N_2O$), a long-lived greenhouse gas, in atmosphere has increased mainly due to anthropogenic source, especially application of nitrogen fertilizers. Quantifying $N_2O$ emission from agricultural field is essential to develop national inventories of greenhouse gases (GHGs) emission. The objective of the study was to develop emission factor to estimate direct $N_2O$ emission from agricultural field in Gangwon-do, Korea by measuring $N_2O$ emissions from potato (Solanum tuberosum), red pepper (Capsicum annum L.), and Chinese cabbage (Brassica campestris L.) cultivation lands from 2009 to 2012. Accumulated $N_2O$ emission was $1.48{\pm}0.25kg$ $N_2O-N\;ha^{-1}$ for red pepper, $1.27{\pm}0.27kg$ $N_2O-N\;ha^{-1}$ for potato, $1.49{\pm}0.06kg$ $N_2O-N\;ha^{-1}$ for Chinese cabbage cultivated in spring, and $1.14{\pm}0.22kg$ $N_2O-N\;ha^{-1}$ for fall Chinese cabbage. Emission factor of $N_2O$ calculated from accumulated $N_2O$ emission, nitrogen fertilization rate, and background $N_2O$ emission was $0.0051{\pm}0.0016kg$ $N_2O-N\;ha^{-1}$ N for cropland in Gangwon province. More extensive study is deserved to be conducted to develop $N_2O$ emission factor for upland crops in Korea through examining the emission factors from various regions and crops because $N_2O$ emission is influenced by many factors including climate characteristics, soil properties, and agricultural practices.

• 한국의류산업학회지
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• 제20권6호
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• pp.645-655
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• 2018

Online to Offline(O2O), a new model of e-commerce, has been gradually recognized and accepted by consumers. Electronic commerce has become diversified and O2O marketing is the new trend of e-commerce. The rapid popularization of mobile Internet and online shopping makes O2O service gets more attention. Although recently O2O service and O2O marketing get much attention, there is no much preceding research about the antecedents of mobile shopping of O2O market. The purpose of the study is to examine the effect of shopping orientation on intention to reuse O2O services and the moderating effect of impulse buying tendency. A total of 209 surveys were collected online in total for the data of the study. The key findings of this study are as follows: First, convenience seeking shopping orientation has a positive effect on the intention to reuse O2O service and brand seeking shopping orientation has, too. Second, impulse buying tendency positively moderated the relationship between hedonic seeking shopping orientation and intention to reuse O2O service, and negatively moderated sales seeking shopping orientation and intention to reuse O2O service. The results of this study presented some implications for operators at O2O service area. Research findings and study limitations are discussed.

• 한국정보전자통신기술학회논문지
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• 제10권2호
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• pp.125-132
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• 2017

O2O 서비스는 온라인을 이용한 오프라인 상점의 마케팅을 통해 매출 증대에 기여하고 있다. 특히 O2O 비즈니스는 모바일기기 사용의 급증으로 스마트폰으로 다양한 서비스가 가능하고 기업은 고객의 위치에 맞게 다양한 서비스를 제공할 수 있게 되었다. 이런 O2O 서비스가 오프라인 상점의 실구매로 이루어지는 주요 역할을 하게 되었다. O2O 서비스를 위한 스마트폰 앱 개발에 있어 기존 구조적 설계 방법 보다는 최근의 객체지향 분석/설계 방법인 UML이 유용할 것으로 보인다. 그러므로 본 논문에서는 비콘 기술에 기반한 O2O 음식점 서비스를 위한 스마트폰 앱 개발에 객체지향 분석/설계 방법을 제시함으로써 본 분석/설계 방법이 음식점 O2O 상용시스템에 제작에 유용하게 활용될 수 있음을 보여준다.

• 한국토양비료학회지
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• 제47권5호
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• pp.368-373
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• 2014

Ammonia loss from urea significantly hinders efficient use of urea in agriculture. The level of nitrous oxide ($N_2O$) a long-lived greenhouse gas in atmosphere has increased mainly due to anthropogenic source, especially application of nitrogen fertilizers. There are reports in the literature showing that the addition of zeolite to N sources can improve the nitrogen use efficiency. This study was conducted to evaluate nitrous oxide ($N_2O$) and ammonia ($NH_3$) emission by mixed treatment of urea and zeolite in upland crop field. Urea fertilizer and zeolite were applied at different rates to study their effect on $N_2O$ emission during red pepper cultivation in upland soils. The $N_2O$ gas was collected by static closed chamber method and measured by gas chromatography. Ammonia concentration was analyzed by closed-dynamic air flow system method. The total $N_2O$ flux increased in proportion to the level of N application. Emission of $N_2O$ from the field increased from the plots applied with urea-zeolite mixture compared to urea alone. But urea-zeolite mixture treatment reduced about 30% of $NH_3$-N volatilization amounts. These results showed that the application of urea and zeolite mixture had a positive influence on reduction of $NH_3$ volatilization, but led to the increase in $N_2O$ emission in upland soils.