• 한국IT서비스학회지
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• 제20권4호
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• pp.35-52
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• 2021

Nowadays data-based decision making is emerging as the center of the business environment paradigm, but many companies do not have data-driven decision-making systems. It has also been studied that using an expert's intuition in decision making can be more efficient in terms of speed and cost, compared to analytical decision making. The goal of this study is to analyze customer churn factors using a group of experts within a financial company from the viewpoint of decision-making efficiency. We applied a debit card 'A', product of the National Credit Union Federation of Korea. The churn factors of all the financial expert groups were examined. Also. the difference in each group (management support, card recruitment, customer service group) was analyzed. We expect that this study will be helpful in the practical aspects of managers whose environments is lack data-oriented infrastructure and culture.

• 한국IT서비스학회지
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• 제20권2호
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• pp.111-126
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• 2021

A Kano model was used to classify the quality attributes of the service robot function for actual deployment that can support and replace bank employees. Quality attributes for a total of 6 dimensions and 23 service elements were divided into bank employees and customer groups, and service priorities were derived after comparative analysis. The Decision tree model was used to supplement the excessive simplification of quality attributes by the modest number of Kano models and to classify and predict by segment market. Of the 23 services, 16 were classified into the same attributes in both groups. 6 services classified as combination attributes used a Decision tree to identify differences in perception of quality attributes among groups. In terms of basic financial services and professional financial services, it was confirmed that bank employees feel financial service robots more attractive than ordinary customers. In the design of IT convergence service, we propose a methodology for deriving quality attributes by combining a Kano model for classifying quality attributes of two groups and a Decision tree for forecasting subdivision markets.

• 한국유기농업학회지
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• 제29권4호
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• pp.459-469
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• 2021

Until now, research on inter-Korean economic cooperation and economic integration has been limited to the areas of the two Koreas. However, Korea is connected with many countries in Asia through the global value chain. Thus, if inter-Korean trade deepens, it may affect the trade structure of neighboring countries. In order to establish a specific inter-Korean economic integration policy when North Korea becomes a normal state in the future, an analysis that reflects the trade structure including Northeast Asia must be preceded. Therefore, in this paper, the impact of inter-Korean trade on Korea, China and Japan was analyzed using the international input and output table containing actual trade data. The scope of analysis was limited to agriculture, reflecting North Korea's demand for economic cooperation. The results show that trade in the agricultural sector between the two Koreas did not have a significant effect of production and value added. but when China and Japan participate in trade with North Korea, the production effect was calculated to be as high as 4 million dollars in Korea and up to 10 million dollars in Japan. And China showed up to 520 million dollars. In addition, the value-added effect was calculated up to $1 million in Korea, up to $4 million in Japan, and up to $250 million in China.

• 한국유기농업학회지
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• 제30권3호
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• pp.313-333
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• 2022

In Muju County, one of Korea's major apple producers, the regional agricultural cooperatives united together and invested to establish a cooperative joint business corporation in charge of the sales business. The corporation carried out the sales business transferred from the participating regional agricultural cooperatives. While the two participating cooperatives showed a marked difference in the degree of participation at the beginning of the business, the introduction of the agricultural product processing centers (APCs) and the participation of co-selection and shipment organizations and general farms helped settle this gap. In addition, commercialization through the APCs enhanced the market competitiveness of apples, which led to the stable securing of sales outlets. The corporation integrated the sales business in the county and this resulted in increased sales volume and sales revenue. Playing a leading role in introducing and cultivating new crops on a trial basis, the corporation demonstrated its potential as the main body of the joint sales business.

• 현장농수산연구지
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• 제13권1호
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• pp.185-202
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• 2011

As a result of survey the dealings amounts of agricultural products in the public management wholesale market from 1997 to 2009 for 13 years, that makes composted of 54,706 tons in 1997, 130,345 tons in 2003 by increasing 238%, that is resulted of about 20% increase every year. As a result of survey the dealings money of agricultural products in the public management wholesale market from 1997 to 2009 for 13 years, that makes composted of 168,074 million won in 1997, 323,232 million won in 2003 by increasing 192%, that is resulted of about 16% increase every year. It has corelation with dealings amounts and money each other, also appeals to transition without discrimination, but making high amounts than money. It is divided into excellent, good and poor products according to freshness, pileus size, color and stem length to forwarding method field survey in farm produce wholesale market.

• 한국유기농업학회지
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• 제31권4호
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• pp.327-341
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• 2023

The Ministry of Agriculture, Food and Rural Affairs, Hanwoo Association and Nonghyup have discussed proactive reduction measures for cows in response to concerns about an oversupply of hanwoo to ensure supply stability. This study aims to empirically analyze whether the cow fattening support program is being implemented in line with its objectives. Based on the analysis of beef traceability data, the slaughter age of participating cows was reduced by 7.6 to 14.7 months compared to non-participating cows. And heifer was reduced 1.5 months in their slaughter age. In case of parity, participating cows showed a reduction of 1.4 compared to non-participating cows. Through the SUR model, an analysis was conducted to examine the effect of the cow fattening support program on the suppression of calf production numbers. The analysis results showed that the calf production numbers are positively influenced by the number of fertile cow and the quantity of semen sales. Furthermore, it is estimated that calf production decreased as the fat index increased, and during the period when the cow fattening support program was implemented, an average monthly suppression of 3,558 calves was observed.

• 한국산림과학회지
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• 제98권4호
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• pp.504-511
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• 2009

본 연구는 밤나무 재배의 생산비를 파악하기 위해 밤나무 재배농가 227농가를 대상으로 조사하였으며 분석 결과는 다음과 같다. 국내 밤나무 재배 전업농가는 평균 5.5 ha의 면적을 재배하고 있었으며, ha당 1.6톤의 밤을 생산하고 있었다. 밤의 판매는 농협과 수집상에 73%이상을 판매하고 있었으며, 품등별 생산비중은 특대립과실 18%, 대립과실 49%, 중립과실 25%, 소립과실 8%로 나타났다. 밤 재배농가의 연간 조수입은 지역마다 상당한 차이를 나타내고 있었으나 전체 평균으로 볼 때, ha당 2,103천원의 조수입을 얻어 경영비로 66.4%를 지출하고 706천원의 농가소득을 올려 33.6%의 소득률을 나타내었다. 지역별 생산비 특성을 보면, 충남지역은 저수고 재배와 노동집약형 재배를 통해 품등이 높은 밤을 생산하여 ha당 평균 2,161천원의 높은 소득을 올렸으나 전남과 경남지역에서는 밤나무 노령화의 영향으로 경영비 투입비중이 낮아 생산성이 크게 떨어지는 특성을 나타냈다.

• 디지털융복합연구
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• 제12권1호
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• pp.193-207
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• 2014

본 연구는 직무성과에 영향을 미치는 주요 요인으로 직무역량, 셀프리더십, 조직문화를 제시하고, 이들 요인들 간의 상호작용이 직무성과에 미치는 영향에 대해 살펴보고 있다. 실증분석 결과에 따르면, 직무역량과 셀프리더십은 직무성과에 긍정적인 영향을 미치는 반면, 조직문화는 유의한 영향을 미치지 않는 것으로 확인되었다. 또한 셀프리더십과 조직문화의 상호작용은 직무성과에 긍정적인 영향을 미치지만, 직무역량과 셀프리더십, 직무역량과 조직문화의 상호작용은 유의한 영향을 미치지 않았다. 마지막으로 세 변수들 간의 상호작용은 직무성과에 긍정적인 영향을 미치는 것으로 나타났다. 이와 같이 본 연구는 직무역량, 셀프리더십, 조직문화가 직무성과에 미치는 개별적인 영향을 분석함으로써 기존 논의의 타당성을 재검토하는 한편, 변수들 간의 상호작용 효과에 대한 분석을 통해 이제까지 개별적으로 이루어졌던 논의들 간의 통합을 추구했다는 점에서 의의를 찾을 수 있다.

• 한국정보통신학회논문지
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• 제20권6호
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• pp.1129-1135
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• 2016

2011년 NH농협 전산망마비 사건, 2013년 3.20 사이버테러 및 2015년 12월의 한국수력원자력 원전 중요자료 유출사건이 있었다. 이러한 사이버테러는 해외(북한)에서 조직적이고 장기간의 걸친 고도화된 APT공격(Advanced Persistent Threat Attack)을 감행하여 발생한 사이버테러 사건이다. 하지만, 이러한 APT공격을 방어하기 위한 탁월한 방안은 아직 마련되지 못했다. APT공격은 현재의 관제 방식으로는 방어하기가 힘들다. 본 논문에서는 빅데이터 분석을 통해 APT공격을 예측할 수 있는 방안을 연구한다. 본 연구는 대한민국 3계층 보안관제 체계 중, 정보공유분석센터(ISAC)를 기준으로 하여 빅데이터 분석, APT공격 및 취약점 분석에 대해서 연구와 조사를 한다. 그리고 외부의 블랙리스트 IP 및 DNS Log를 이용한 APT공격 예측 방안의 설계 방법, 그리고 전조현상 분석 방법 및 APT공격에 대한 대응방안에 대해 연구한다.

• 정보보호학회논문지
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• 제25권5호
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• pp.1027-1041
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• 2015

최근, Verizon(2010), 농협(2011), SK컴즈(2011), 그리고 3.20 사이버 테러(2013)와 같이 소중한 정보가 누출되고 자산에 피해가 발생한 후에야 보안 공격을 인지하는 APT (Advanced Persistent Threat) 공격 사례가 증가하고 있다. 이러한 APT 공격을 해결하고자 이상 행위 탐지 기술 관련 연구가 일부 진행되고 있으나, 대부분 알려진 악성 코드의 시그너쳐 기반으로 명백한 이상 행위를 탐지하는데 초점을 맞추고 있어서, 장기간 잠복하며 제로데이 취약점을 이용하고, 새로운 또는 변형된 악성 코드를 일관되게 사용하는 APT 공격에는 취약하여, 미탐율이 굉장히 높은 문제들을 겪고 있다. APT 공격을 탐지하기 위해서는 다양한 소스로부터 장기간에 걸쳐 대규모 데이터를 수집, 처리 및 분석하는 기술과, 데이터를 수집 즉시 실시간 분석하는 기술, 그리고 개별 공격들 간의 상관(correlation) 분석 기술이 동시에 요구되나, 기존 보안 시스템들은 이러한 복잡한 분석 능력이나 컴퓨팅 파워, 신속성 등이 부족하다. 본 논문에서는 기존 시스템들의 실시간 처리 및 분석 한계를 극복하기 위해, 패스트 데이터 기반 실시간 비정상 행위 탐지 시스템을 제안한다.