• Distribution Business Review
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• no.3
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• pp.105-119
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• 2003

인터넷 전자상거래와 TV홈쇼핑 상품 구매가 활성화됨에 따라 인터넷 쇼핑몰과 TV홈쇼핑의 소비자 행동특정을 비교 분석하여 두 집단간에 통계적으로 유의한 차이자 있는지 분석하고 이에 대한 마케팅 시사점을 제시하고자 한다. 교차분석 및 T-검정 등을 활용한 통계분석 결과 인터넷 상품구매와 TV 홈쇼핑을 각각 선호하는 두 집단간에 정보수집 등 사전준비 요인, 제품에 대한 편리성 및 서비스 요인 인터넷 사용 환경 풍의 요인에서 두 집단간에 통계적으로 유의적인 차이가 존재하는 것으로 밝혀졌다. 인터넷 전자상거래나 TV 홈쇼핑 업체들은 두 집단간의 이러한 차이 특성을 충분히 고려하여 인터넷 또는 TV 홈쇼핑 마케팅 전략을 운영하여야 할 것이다. 특히 소비자들의 통신판매 제품에 대한 관심이 높아져가 것을 감안하여 대 고객 관계마케팅(CRM)시스템 부문 강화, '상품배송' 면에서 비용 절감과 고객 만족을 위한 SCM 구축방안 개발에 주력하여야 할 것이다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.13 no.4
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• pp.169-176
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• 2003

Distributed signcryption was specially designed for distributing a signcrypted message to a designated group. Since a verifier of this signcryption should how the signer's public key in advance, it cannot provide the signer's anonymity. This study adds anonymity and non-repudiation by trusted party to the distributed signcryption with almost the same computational load. We also analyze security and computational loads of the proposed scheme. In addition, we extend our scheme to an efficient group signcryption.

• Asia Marketing Journal
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• v.5 no.1
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• pp.23-50
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• 2003

본 연구는 최근 기업들이 광고촉진의 한 수단으로서 많이 활용하고 있는 특정 감정소구의 한 형태로서 지역정서를 이용한 광고의 설득효과를 탐색하기 위하여 지역정서소구메시지 유형을 촉진형 메시지와 예방형 메시지로 구분하고, 이 메시지유형들의 설득효과에 대하여 소비자의 지식수준과 자기지역중심성향 (CLOCAL)이 어떻게 조절작용을 하는가를 탐색적으로 검토하였다. 연구결과 지역소비자에 대한 지역정서소구광고의 메시지유형별 설득효과는 소비자 개인특성의 조절변인으로서 지식수준과 자기지역중심성향 수준을 고려했을 경우, 촉진형 메시지와 예방형 메시지 모두에서 유의적인 차이를 발견할 수 있었다. 먼저, 소비자의 정보처리능력과 관련하여 지식수준이 높은 집단에서는 촉진형 메시지가 더 설득적이었고, 지식수준이 낮은 집단에서는 예방형 메시지가 더 설득적임을 발견하였다. 그러나 소비자의 자기지역중심성향수준에 따라서는, 높은 수준의 집단에서는 예방형 메시지가, 낮은 수준의 집단에서는 촉진형 메시지가 더 효과적인 것으로 나타났다. 끝으로 본 연구는 이와 같은 연구결과를 바탕으로 지역정서소구광고의 메시지 특성과 소비자특성에 따른 차별적인 지역정서소구광고의 설계전략방안들을 제안하였다.

• Proceedings of the Acoustical Society of Korea Conference
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• 1987.11a
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• pp.66-69
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• 1987

본 논문은 불특정화자의 한국어 단독음인식에 관한 연구로써 새로운 집단화 방법인 Modified-ISODATA 집단화방법을 제안한다.본 알고리즘의 목적은 종래의 ISODATA 알고리즘에서 외부 고립점 처리 및 분리과정을 단순화 하고, Lumping 과정을 제거하여 정확하고도 자동화된 집단의 중심점을 찾는 것이다. 본 알고리즘을 적용한 결과, 10명의 남성 화자와 4명의 여성 화자가 발음한 11개의 ltnt자음에 대하여, 최근에 발표된 Modified K-means 방법보다 좋은 인식율을 나타내어, 보다 정확한 집단의 중심점을 찾아 내었음을 입증해보였다.

• Korean Journal of Logic
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• v.6 no.2
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• pp.83-106
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• 2003

선호구조의 논리를 결정모델에 적용시킬 때 선호구조는 일반적으로 특정 수치적 순서화 조건을 만족하게끔 표현된다. 그래야 주어진 선택지들을 둘러싼 개인 혹은 집단의 선호구조에 관한 정보가 형식적으로 표출될 수 있다고 여겨져 왔다. 그러나 선호구조의 수치적 순서화에 의해서만 선호관계의 정보가 형식적으로 표출될 수 있다는 성각은 일종의 독단이다. 더욱이 다양한 선택지의 결합에 의한 선호구조의 정보 이동은 기존의 수치적 순서화 속에서 제대로 다루어질 수 없다. 하나의 대안으로서 선형대수의 그래프이론에 바탕을 둔 선호구조의 질적 순서화 방식을 제안한다. 개인 혹은 집단의 선호구조에 관한 정보는 제안될 질적 순서화에 의해 보다 포괄적으로 다루어질 수 있다.

• Journal of the Korean Institute of Intelligent Systems
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• v.13 no.5
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• pp.530-538
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• 2003

Recently the needs for keeping existing customers is increasing in the field of marketing. So, the customers needs to be classified by groups and the differentiated responses to the specified customer groups are demanded. In this paper, we implemented a system that classifies the customer groups using the neural network, and classified the purchasing patterns among customer groups. Empirically examining the association rules between two groups, we could find out that similar rules exist between them. So, it is important that customers should be classified into the excellent customer group and the general group for the decision making of marketing. This paper shows that the efficiency of the differentiated marketing can be maximized by raising the correctness of the expectation in the classification of customer groups.

• Journal of the Korea Convergence Society
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• v.7 no.5
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• pp.7-13
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• 2016

Since a smart phone became popular that leads mobile era, we've faced diverse life style changes. Particularly, a mobile messenger which changes communication method from voice and video call to text based multi media messenger, leads new gift-giving culture called mobile voucher gift-giving. Although many researches have validated diverse models about digital voucher, this research utilize the model which divide motivation of gift-giving from three theories: gift-giving motivation theory, technology acceptance model, and consumer value theory. The purpose of this research is not only validate the model but also grouping by giving frequency of samples and validate disparity among groups. In conclusion, there are three groups founded and shows difference motivations.

• Journal of the Korean Institute of Telematics and Electronics B
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• v.33B no.1
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• pp.178-186
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• 1996

We develop a simple adaptive population coding model for neural networks based upon an error minimization method. Our model exhibits properties that have been experimentally observed in the population coding of the motor-cortical cells during the voluntary arm movements of primates. By removing a group of directionally tuned cells after learning, we study its contribution to the population coding. Through the learning process of the remained cells, we observe how the cells modify their preferred directions to reduce the coding errors. Since this adaptive property has been neither predicted nor experimentally observed before, it would be interesting to find whether a similar adaptive property exists in real cortices that are believed to encode the information in their cell populations.

• Korean Journal of Cognitive Science
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• v.34 no.1
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• pp.39-66
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• 2023

New media moved the place of social exchange to the Internet, allowing large groups to communicate in one place beyond the limits of time and space. Recent studies have also reported cases in which human social abilities do not keep up with the expansion of group scale through social media. In this context, current study investigated how human perception of social information is affected by the expansion of the group scale in the context of majority bias. Using Internet-based task, the psychological processes that group ratio and group size are perceived and affect majority-biased social information use were investigated, and whether group scale moderates those processes was examined. The group ratio has a positive effect on the majority bias, and the relationship was partially mediated by ratio perception. Group scale did not moderate the relationship between group ratio and ratio perception. On the other hand, the correlation between group size and majority-biased social information use was not significant. Group scale moderates group size perception. The group size and size perception showed positive correlation under the smaller group scale condition. However under the extended group scale condition, the perceived group size became significantly lower and lost its correlation with group size. These results provide evidence that the psychological mechanism related to group size perception was not properly responding to the expansion of the group scale. Furthermore, the possibility of a specific psychological mechanism for processing group size information and the form of information input specifically accepted by majority bias were discussed from perspective of evolutionary psychology.

• 한국사회정책
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• v.24 no.1
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• pp.117-151
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• 2017

This study explored the relationship between quitting time and subsequent time allocation of full-time workers with young children. First, as a result of sub-group difference analysis of subsequent time allocation by quitting time, the group who finished their work early used their additional time mostly for housework and care work. And if the workers finish their work late, they decreased their housework and active leisure time first, and then supplementally reduced their care work and passive leisure time. In addition, SUR analysis showed that as the workers finish their work earlier, the proportion of housework, care work and active leisure among five activities was getting higher. Last but not least, it was verified that the relationship between the quitting time and the subsequent time allocation was moderated by gender in housework, care work, and regenerative activity. This research can contribute to the development of debate on work-life balance of workers' by providing the concrete and detailed results.