• Journal of Ecology and Environment
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• 제45권4호
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• pp.287-292
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• 2021

Background: References to insects in myths, stories, and idioms can be found in almost any culture, but with regard to references involving honey bee species in the Asia-Australian region, little information is available. Such references to bees can be highly informative by revealing attitudes of admiration, fear, ignorance, or even revulsion towards these insects. Results: The subject is briefly reviewed and examples of references to bees of selected cultural communities are given. Although folkloristic references to honey bees were found to be mostly positive highlighting fearlessness, cleverness, and industriousness of the bees, some also touch upon their ability to cause pain. Conclusions: Owing to the decreasing contacts and increasing alienization regarding insects generally, a plea is made to collect whatever information is still available about references to bees in songs, myths, stories, proverbs, and idioms and to compare such uses from different regions, e.g., North and South Korea. This would support other fields of research aiming to discover and to describe cultural relationships, migrations, and contacts between different peoples of the Asian/Australian region.

• Asia Marketing Journal
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• 제16권1호
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• pp.169-193
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• 2014

The earlier studies have verified that brand values have significant impact on financial values such as stock return and stock price to justify marketing costs for brand building. Except for Mizik and Jacobson (2008), however, little research has addressed what kinds of brand components composing brand values have a significant relationship with financial values. As a follow-up research of Mizik and Jacobson (2008), this research focuses on what kinds of relationships exist between the unanticipated change of each brand asset component and stock return, one of the financial values. The authors selected six brand asset components from the Korea-Brand Power Index(K-BPI) data in which 'Top of Mind,' 'Unaided Awareness,' and 'Aided Awareness' are brand awareness measures and 'Image,' 'Purchase Intention,' and 'Preference' are brand loyalty measures. Out of those six brand components, they found that unanticipated changes of 'Top of Mind,' 'Unaided Awareness,' 'Image,' and 'Preference' have significantly positive effect on unexpected stock return change. Therefore, they conclude that these four brand asset components provide incremental information in explaining unanticipated stock return.

• Journal of Korea Artificial Intelligence Association
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• 제1권2호
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• pp.21-25
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• 2023

The purpose of this study was to compare the performance using multiple regression models to predict the energy consumption of steel industry. Specific independent variables were selected in consideration of correlation among various attributes such as CO2 concentration, NSM, Week Status, Day of week, and Load Type, and preprocessing was performed to solve the multicollinearity problem. In data preprocessing, we evaluated linear and nonlinear relationships between each attribute through correlation analysis. In particular, we decided to select variables with high correlation and include appropriate variables in the final model to prevent multicollinearity problems. Among the many regression models learned, Boosted Decision Tree Regression showed the best predictive performance. Ensemble learning in this model was able to effectively learn complex patterns while preventing overfitting by combining multiple decision trees. Consequently, these predictive models are expected to provide important information for improving energy efficiency and management decision-making at steel industry. In the future, we plan to improve the performance of the model by collecting more data and extending variables, and the application of the model considering interactions with external factors will also be considered.

• 한국항행학회논문지
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• 제15권1호
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• pp.124-129
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• 2011

협업과정에 있어서, 협업의 대상으로 공간 안에 기 분포되어 있는 컴퓨팅 개체들을 사용하는 경우, 협업에 필요한 업무를 올바르게 수행할 수 있는 컴퓨팅 개체를 선택하여 협업에 임하는 것은 성공적인 협업 결과를 보장하기 위한 기본 조건이 된다. 협업 과정에서 수행해야 하는 작업을 그 협업에서의 역할이라고 할 때, 이 역할을 잘 수행할 수 있는 컴퓨팅 개체를 선택하기 위해서는 역할 수행에 필요한 기능의 소유, 협업 작업에 대한 충성도, 협업에 참여하고 있는 다른 개체들과의 연결성 등을 고려해서, 성공적인 협업 완료를 위해 현 상황에서 가장 적합한 개체를 선정할 수 있어야 한다. 이에 본 연구에서는 협업에 참여시킬 컴퓨팅 개체를 선택하기 위해, 개체의 속성 분석을 통해 적합도를 결정하고, 속성에 따른 가중치를 역할 할당의 상황에 따라 동적으로 변화시킴으로써, 최적의 협업 대상을 선택할 수 있는 역할 할당 방법을 제안한다.

• 한국콘텐츠학회논문지
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• 제7권8호
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• pp.13-20
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• 2007

의사결정나무는 대량의 데이터를 몇 개의 집단으로 분류하고, 미래상황을 예측하기 위해 자주 사용되는 분석기법 중의 하나이며, 각 노드에서 분할이 일어나면서 자라게 되고, 각 노드에 속하는 자료의 순수도가 효과적으로 증가하도록 진행된다. 또한 의사결정나무를 생성하는 과정에서 필요 이상의 가지(leaves)를 갖게 되면 노드의 분할을 정지하거나, 분류성능 향상에 큰 도움이 되지 못하는 가지를 잘라내게 된다. 이러한 가지치기의 결과로 의사결정나무의 형태가 변하게 되는데 이는 기존의 가지분할이 효율적이지 않았음을 의미하는 것이다. 본 연구에서는 가지치기의 교정뿐 아니라 새로운 분할과정을 혼합한 우수한 의사결정나무 추출 방법을 제안한다. 특히, 새로운 분할 노드의 선택에 있어 퍼지이론을 적용하여 분할의 효과성을 제고할 수 있는 방법을 제시하고자 한다.

• 한국산림과학회지
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• 제99권6호
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• pp.891-899
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• 2010

이 연구의 목적은 선택실험기법을 활용한 조건부 로짓 모델을 이용하여 산림경관기능이 가지는 경제적 가치를 추정하는데 있다. 이를 위해 산림경관의 속성과 수준을 선정하였는데, 속성은 산림형태, 임상, 소밀도, 휴양적 요소, 지불의사금액 등이 그것이다. 이를 토대로 SAS 9.1을 이용하여 Orthogonal과 Balanced를 이루는 96개 선택 집합을 4개 타입으로 구성하였으며, 서울을 포함한 7개 광역시 시민을 모집단으로 설정하여 연간 가구당 지불할 의사를 면접조사방법으로 총 280부를 조사하였다. 그 결과, Non-ASC 모형에서 Mcfadden' ${\rho}$는 0.21, 우도통계량은 -2,631로 나타났다. 그리고 산림경관에 대한 가구당 평균 지불의사금액은 266,723원으로 나타났다.

• 한국주거학회논문집
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• 제20권4호
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• pp.131-142
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• 2009

High-rise and high-density apartment complexes have been built and supplied on a large scale in the 1st period of the New Town project in metropolitan areas since the late 1980s. Now It has become necessary to improve those apartment complexes, which have serious deterioration problems for aging more than about 20 years accompanying simultaneity and a large scale. The purpose of this research is to develop the evaluating indicators to measure the level of deterioration of apartments inclusively and practically in order to regenerate apartments as sustainable residential environments. This study is composed of the following four parts; (a) establishing the conceptual model of evaluation of apartment deterioration, (b) selecting evaluation items, (c) constituting evaluation measurement, and（ｄ)weighting evaluation indicators. First, deterioration of apartments was conceptualized by physical. social, and economical aspects in terms of sustainable development and proposed the conceptual model of hierarchy structure of evaluation of apartment deterioration by literature reviews. Second, evaluating items were selected based on literature reviews of existing indicators and preceding studies about apartments of Korea and foreign countries. The evaluating indicators were identified as a total of 77 evaluating items which were composed of three dimensions and 9 attributes on the basis of the conceptual model. They cover comprehensive scope of the apartment such as unit, building, complex, and site. Third, as the measurement, the 5 point ordinal scale measure was suggested. The evaluating measurement including measure standards, measure methods, and measure contents were developed by each evaluating items. Lastly, the weighting of evaluating indicators was analyzed by AHP method conducted by survey on the expert group. Items were identified as high contributors or low contributors. The weighting of these items could suggest several evaluations according to the situation. The evaluation of the level of deterioration can be done by both total evaluation and a specific field of evaluation. In addition, it is easy to grasp deteriorated attributes or dimensions by providing a radar and bar chart showing evaluation results. These evaluating indicators could be a useful tool to grasp actual methods for the regeneration of apartments.

• 한국콘텐츠학회논문지
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• 제10권3호
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• pp.282-293
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• 2010

현재, 인터넷 비스니스의 급성장으로 인해 인터넷 포털시장에서도 경쟁이 심화되고 있다. 경쟁이 심한 시장에서 고객에게 차별화된 자사만의 독특한 이미지를 전달할 수 없다면 더 이상 경쟁우위를 차지할 수가 없다. 따라서 본 연구에서는 포지셔닝 맵 구축을 통한 포털간의 경쟁관계를 비교하고 세분집단별로 소비자들이 선호하는 인터넷 포탈이미지 평가속성과 이상점을 파악하여 차별화된 포지셔닝전략을 수립하고자 하였다. 연구대상은 인터넷다량이용자층인 대학생들을 대상으로 주로 이용하는 인터넷포털에 대해 이미지평가를 하도록 하였다. 분석결과 포털 간에 가장 차별화되어 있는 속성은 오락 및 부가서비스와 편리성이며 가장 차별화되지 않은 속성은 고객서비스로 나타났다. 포털에 대한 선호도와 이상점파악에서도 세분집단별로 유의한 차이가 있었다. 이러한 연구결과는 인터넷 포털시장에서 차별적인 시장세분화전략수립에 있어서 의미있는 기초자료가 될 것으로 본다.

• 대한지역사회영양학회지
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• 제8권4호
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• pp.556-565
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• 2003

Market segmentation helps providers to find better marketing opportunities and allows foodservice managers to develop the right product for each target market. Therefore, this study, taking university faculty and staff as subject, is intended to diagnose the relative value of service quality attribute, on the basis service quality scenario of faculty foodservice; to suggest price for improving customer loyalty in market segments. A questionnaire was developed ar d mailed to 600 Yonsei university faculty and staffs. A total of 385 questionnaires were usable; resulting in a 58.7％ of faculty and a 69.7％ of staff response rate, respectively. Statistical data analysis was completed using the SAS/Win 6.12 for descriptive Analysis, ANOVA, principal factor analysis, cluster analysis, reliability test and discriminant analysis. The results of the study are as below. Eighteen questions were selected for measuring respondents' lifestyle by AIO method and the seven lifestyle factors derived from factor analysis and aggregated distinct 4 clusters. Service quality attributes of the scenario were determined with 'food quality', 'menu variety', 'atmosphere', 'fast service', and 'clean and sanitation'. 'Food quality', 'menu variety', 'atmosphere', 'fast service', and 'clean and sanitation', in decreasing order, were identified as improving customer loyalty. However, most faculty and staffs were satisfied with the present meal price. The result of this study indicates that the relative value of service quality was differed significantly among the various market segments. 'Food quality', 'menu variety', and 'atmosphere' were determined as major service quality attributes. Thus, customer loyalty could be increased by improving food taste and quality, atmosphere, and service delivery. (Korean J Community Nutrition 8(4) : 556 ∼565, 2003)

• 한국축산식품학회지
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• 제38권3호
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• pp.593-605
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• 2018

The present study was undertaken to assess the efficacy of sapota powder (SP) as natural preservatives and its better utilization in food processing with the incorporation of various levels of SP (2, 4, and 6%) by replacing lean meat. Based on the sensory attributes, pork patties with 4% incorporation of SP was found optimum and selected for further storage studies with control under aerobic and modified atmosphere packaging at refrigeration temperature ($4{\pm}1^{\circ}C$) for 42 days for assessing its antioxidant and antimicrobial efficiency. During entire storage period, indicators of lipid oxidative parameters such as thiobarbituric acid reactive substances (TBARS), free fatty acids (FFA) and peroxide value (PV) followed an increasing trend for control as well as treated products; however, treated product showed a significantly (p<0.05) lower value than control. A significantly lower (p<0.05) microbial count in treated patties than control was noted during entire storage. The sensory attributes are better retained in treated product as compared to control and even on $42^{nd}$ day, overall acceptability of treated patties was found to fall in moderately acceptable category (5.95 in aerobic packets and 5.91 in modified atmosphere packets). Therefore SP has potential to enhance antioxidant and antimicrobial properties of pork patties during storage.