• 한국컴퓨터정보학회논문지
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• 제16권2호
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• pp.83-91
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• 2011

이러닝 시스템에서 난이도를 이용한 학습추천 시스템 설계에 관한 연구가 활발히 진행 중이다. 난이도는 학습자의 수준에 맞는 후행학습을 추천하는데 매우 중요한 요소임에도 불구하고 현행 난이도 기반 학습 추천시스템은 각 학습 콘텐츠의 제작자가 주관적으로 정한 난이도를 적용함으로써 정확한 후행 학습 콘텐츠를 추천하기가 어렵다. 본 논문에서는 객관적인 난이도 지표를 제공하기 위하여 온톨로지에 기반한 새로운 학습콘텐츠 난이도 계산 방법을 제안한다. 기존 온톨로지나 지식맵을 이용한 난이도 계산 방법들은 선행학습과 후행학습 또는 주제간의 선후 관계를 표현하고 이를 이용하여 난이도를 계산하였으나, 이 방법들도 콘텐츠 작성자의 주관적인 판단에 의해 후행학습이 결정된다는 문제점이있다. 본 논문에서는 이를 해결하기 위하여 콘텐츠를 구성하는 단어들의 상하위 관계 및 심화도를 나타내는 온톨로지를 이용하여 단어들 간 온토로지의 경로상의 거리로 난이도를 계산한다. 이를 통하여 학습자에게 보다 객관적인 난이도 정보를 제공하고 학습자 수준에 가장 적합한 후행학습 콘텐츠를 추천할 수 있다.

• 유통과학연구
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• 제14권12호
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• pp.71-78
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• 2016

Purpose - This paper is for the Analysis on the Hindrance Factors and Activation Scheme by the Type of Distribution Channel in Direct transaction of Agricultural Products. As the distribution structure of agricultural products has become changable, farmers seem to use the type of direct distribution in order to enhance the receiving price. This study aims to explore the hindrance factors and income variation rate in direct transaction of agricultural produces, specifically focusing on the 167 farmers. Research design, data, and methodology - To ascertain the hindrance factors exactly by the type of distribution channel, the managements were classified by four subcategories, that is high sales percentage with shopping malls, SNS, shopping malls and SNS, and off-line direct transaction. Results - As a result of the hypothesis test, hinderance factors in online direct deal activation were found to be in the order of the difficulty in continuous content production, the difficulty in shopping mall operation and maintenance, and the difficulty in card commission problems, and in the order of the difficulties in continuous content production, the difficulty in continuous content production, the difficulty in shopping mall operation and maintenance, and the difficulty in branding for the SNS group. Thus, it can be seen that the difficulty in continuous content production, shopping mall operation and maintenance were found to be the biggest obstacles. In addition, hindering factors in online direct deal activation were found to be in the order of the difficulty in credit card settlement, the difficulty in publicity, and the difficulty in dealing with unsold goods. The group with high sales rate in shopping mall was found to be increased by 23.9% in the gross income compared to the previous year, the group with high SNS sales ratio increased by 56.5%, the group with direct offline transaction increased by 37.1%, among which the group with the highest increase rate of SNS sales ratio was found to be the highest from the rate of increase/decrease of the income, which was statistically significant. Conclusions - It can be suggested that government and local government may provide agricultural management with supporting plan which in turn can activate direct transaction in any possible ways.

• 유통과학연구
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• 제14권3호
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• pp.85-91
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• 2016

Purpose - Prior research has suggested that consumers typically prefer to have a larger number of options. However, preference of assortment size may depend on how depleted resources in consumers' mind are. Reduced capacity for self-regulation by resource depletion makes people rely on more intuitive and less effortful decision processing. When they are mentally depleted, people are likely to focus on the choice difficulty from large assortment, which leads to preference for the small assortment when they make a decision. It could be an important question potentially how being in a depleted mode through effortful self-regulation will influence on the evaluation of assortment size. To answer this questioner, we hypothesized that being engaged in self-regulation, as compared with not being engaged in self-regulation, will influence on the evaluation of product assortment size such as attractiveness, difficulty of choice, and anticipated regret. Research design, data, and methodology - In this study, we first manipulated self-regulatory resource availability using a self-regulation task (i.e., instructing participants to solve Sudoku puzzle vs. to solve diagram cube by filling any diagrams that they prefer into cube instead of number) and asked to indicate the difficulty of the tasks available to them ("How much difficulty did you feel when you complete the task?") Next, participants were asked to imagine that they were planning to buy a laptop at one of the two stores (small assortment: 6 options vs. large assortment: 30 options), both offering good quality of products. After reading the product descriptions, participants were instructed to consider all the information and choose a store that they would like to shop. Finally we measured the choice difficulty, evaluation of product assortments, and anticipated regret on a 7-point scale. We conducted two-way ANOVA in testing the main hypothesis that depleted consumers will show poorer subsequent self-control than non-depleted consumers when they make a decision in large assortment. Results - Compared with non-depleted participants, depleted participants showed the bigger difference from the degree of choice difficulty and product attractiveness between large and small assortments, but the result revealed only a significant interaction effect of resource depletion and assortment size on choice difficulty. Also depleted participants showed the smaller difference from the degree of anticipated regret between large and small assortments than non-depleted participants. Conclusion - Depleted individuals by a prior task are relatively effortless and intuitive form of choosing products so that they try to avoid making effortful trade-offs among choice difficulty such as large assortment, compare with non-depleted individuals. However, for anticipated regret, non-depleted individuals in small assortment anticipate more regret by excluding or at least restricting the possibility of buying attractive items or another kind of potential items than depleted individuals, regardless less choice difficulty in small option. To sum up, it is important to note that individuals are influenced by self-regulatory resources and their self-regulatory conditions contribute to the overall positive or negative impact of product assortment on choice.

• Nutrition Research and Practice
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• 제11권2호
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• pp.139-146
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• 2017

BACKGROUND/OBJECTIVES: Chewing difficulty is a factor contributing to a poor nutritional status in the elderly. The aim of this study was to examine disparities in food and nutrition intakes among Korean elderly people with and without chewing difficulty. SUBJECTS/METHODS: This study utilized data from the sixth Korea National Health and Nutrition Examination Survey conducted in 2013. The study subjects included males and females over 65 years of age who were not required to adhere to a special diet due to disease or sickness. They were divided into groups according to their chewing ability. Those who found chewing "very difficult" or "difficult", were combined to form the chewing difficulty group. Similarly, those who found chewing "moderately difficult", "easy", and "very easy" were combined to form the normal chewing group. RESULTS: Of the 999 subjects, 47.7% had chewing difficulties and the prevalence of chewing difficulty was higher in females than in males (P = 0.03) and higher in those 75 years of age and over than in younger individuals (P < 0.001). The chewing difficulty group had a significantly lower intake of fruits and vegetables (P < 0.05) and lower vitamin C and potassium intake than those in the normal group. Comparison of the percentages of Dietary Reference Intakes for Koreans (KDRIs) in the two groups indicated that the intake of most nutrients (energy, vitamin C, thiamin, riboflavin, niacin, calcium, phosphorus, sodium, potassium, and iron) were significantly lower in the chewing difficulty group than in the normal group. In particular, calcium intake was inadequate (51% of KDRIs) in the chewing difficulty group. CONCLUSIONS: The results indicate that chewing difficulty is closely related to food and nutrient intake in the elderly and can result in vitamin and mineral intake deficiencies. It is evident that the care of elderly subjects with chewing difficulty is essential for maintaining a healthy lifestyle.

• 치위생과학회지
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• 제15권2호
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• pp.145-152
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• 2015

본 연구는 국민건강영양조사 제5기(2010~2012) 원시자료 중 검진 및 건강 설문조사를 모두 완료한 50세 이상 8,498명의 성인을 최종 연구대상으로 저작불편감과 골관절염과의 관련성을 PASW Statistics ver. 18.0으로 분석한 결과, 다음과 같은 결론을 얻었다. 연구대상자의 저작불편감 상태에 따른 분포에서 저작불편감을 가지고 있는 대상자가 38.8%로 나타났고, 성별에 따른 비교결과는 유의한 차이가 없었다. 연령에서는 50~64세 34.3%, 65세 이상 46.4%로 연령이 증가할수록 유의하게 높게 나타났고, 교육 및 소득이 낮을수록, 흡연상태인 경우, 우울증 및 스트레스 수준이 높을수록 저작불편감이 유의하게 높게 나타났다. 저작불편감과 골관절염과의 관계는 저작불편감을 가진 대상자는 저작불편감이 없는 대상자에 비해 골관절염의 유병위험률이 1.44배(95% CI=1.23~1.70)로 저작불편감과 골관절염은 관련성이 있는 것으로 나타났다. 추가적으로 성별을 층화시켜 분석한 결과, 남성에서 1.36배(95% CI=0.98~1.88)로 나타났지만, 통계적으로 유의하지 않아 남성에서는 관련성이 없었다. 여성에서 1.47배(95% CI=1.22~1.76)로 통계적으로 유의한 결과로 여성에서는 저작불편감과 골관절염은 관련성이 있는 것으로 나타났다. 이상의 결과를 종합하면 50세 이상 성인의 저작불편감 여부가 여성의 골관절염 상태에 영향을 미치는 것을 알 수 있었다. 따라서 구강위생을 통한 구강건강의 문제를 개선시킴으로써 골관절염의 악화를 예방 및 관리하는 데 도움이 될 것이다.

• 디지털융복합연구
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• 제13권6호
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• pp.141-150
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• 2015

본 연구에서는 소비자의 지각된 해석난이도를 매개변수로 사용하여 애매 모호성광고에 대한 태도가 부정적일 수 있음을 주장하였다. 또한 애매 모호성 광고에 대한 소비자의 지각된 난이도는 소비자의 사고방식에 따라 조절될 수 있음을 살펴보고자 하였다. 실증분석결과 첫째, 광고의 애매 모호성이 낮은 경우보다 높은 경우에 지각된 해석난이도는 더 높게 나타났다. 둘째, 애매 모호성이 소비자의 지각된 해석난이도에 미치는 영향은 소비자의 사고방식에 따라 조절되었다. 즉 애매 모호성이 낮은 광고에서는 종합적 사고자가 분석적 사고자에 비해 해석난이도를 높게 지각했고, 애매 모호성이 높은 광고에서는 종합적 사고자와 분석적 사고자 간에 지각된 해석난이도의 차이는 없는 것으로 나타났다. 마지막으로 지각된 해석난이도가 낮은 경우보다 높은 경우에 광고에 대한 태도는 비호의적으로 나타났다. 본 연구결과는 디지털 융 복합 매체를 활용한 애매 모호성광고가 성공적이기 위해서는 반드시 광고에 대한 긍정적인 태도로 연결되어야 하며, 오늘날과 같은 글로벌 경영환경 하에서 글로벌 광고 전략을 수립하기 위한 중요고려 요인으로 소비자 간의 사고방식 차원의 문화적 차이를 고려해야 한다는 점을 시사해준다.

• 한국항해항만학회지
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• 제29권3호
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• pp.175-180
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• 2005

선박 조종자는 방파제를 통항할 경우 조선 부담감을 느낀다 방파제를 배치할 때 아직까지 선박 조종자의 조선 부담감을 고려한 적은 없다. 이 연구는 해상교통류 시뮬레이션을 이용하여 조선 부담감이 발생하는 상황을 재현하여 선박 조종자의 조선 부담감을 정량적으로 표현한 모텔인 환경스트레스모델을 그 재현된 상황에 적용하였다. 주요한 결과는 다음과 같다. (1) 방파제 배치 변화에 의한 조선 부담감의 차이는 그다지 크지 않다 (2) 방파제 사이의 항로 폭이 동일하면 선박의 속력에 따라 조선 부담감의 크기가 다르다. (3) 방파제 사이의 항로 폭이 넓어지면 조선 부담감은 감소한다.

• 한국의류산업학회지
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• 제19권5호
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• pp.559-568
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• 2017

The purpose of this study was to identify the socio-psychological variables and demographic factors influencing the difficulty people may have in discarding fashion goods. In addition, differences of disposal behavior were investigated according to the degree of reported difficulty with which people discarded fashion goods. A total of 260 survey questionnaires were analyzed. Frequency, correlation, exploratory factor analysis, reliability, t-test and multiple regression analyses were used for data analysis using SPSS 22.0. The study results were as follows. First, the difficulty of discarding of fashion goods was positively affected by concern for the environment and the potential for creative reuse of fashion goods, whereas it was not influenced by interdependence. Second, there were differences in the difficulty with which people discarded fashion goods according to demographic factors such as gender and whether or not they held certain religious beliefs; however, there were no differences among other demographic factors. Third, the group demonstrating a high degree of difficulty in discarding fashion goods preferred certain disposal behaviors such as donating to religious organizations, schools, charities etc., exchanging with other people or bartering, reforming for other purposes, selling to secondhand shops or on the internet, storing without wearing it, or discarding it after salvaging reusable parts. The results of this study provide various guidelines for consumers and retailers of fashion products who are interested in the efficient disposal of fashion goods.

• Journal of Nutrition and Health
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• 제40권6호
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• pp.566-575
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• 2007

The purpose of this research was to understand how individuals reflect on the frequency and quantity of foods that they consume. Participants selected 5 males and 15 females aged 30 years or older were first interviewed on the frequency of their food consumption. Then based on this data, they were given a cognitive interview using the method of verbal proving. The individual cognitive interviews were recorded with consent while being conducted after complete approval by the Seoul National University Institution Review Board. The recorded material was evaluated using a thematic analysis after transcribing them into text. By analyzing stages of reflection, the major barriers to make the device difficult are revealed: 1) More difficulty in remembering events over the course of a full year due to diversification in the types of food that people consume 2) difficulty calculating the average for seasonal foods 3) difficulty estimating the amount of consumption from the photos presented 4) difficulty estimating amount of consumption from the quantity presented 5) difficulty processing foods that people think are healthy and foods are unhealthy simultaneously 6) difficulty having to consider foods where target food goes in as an ingredient; 7) difficulties arising from having to increase frequency when the amount consumed is higher than the quantity that is presented 8) difficulty having to combine the frequency and quantity of each food item when numerous foods are clustered into one category. These findings show that the less participants were involved in cooking, the more diverse their eating habits were, and the more they tried to adhere to rules of filling out the questionnaire, the more it was difficult for them to come up with an answer to the question being asked. It therefore seems necessary to construct a Food Frequency questionnaire that is attentive to these problems that arise from the recall stages.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2004년도 추계학술발표회
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• pp.57-62
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• 2004

선박 조종자는 방파제를 통항할 경우 조선 부담감을 느낀다. 아직까지 선박 운항자의 조선 부담감을 고려한 방파제 배치에 관한 기준은 없다. 이 연구는 해상교통류 시뮬레이션을 이용하여 조선 부담감이 발생하는 상황을 재현하여 선박 운항자의 조선 부담감을 정량적으로 표현한 모델인 환경스트레스모델을 재현된 상황에 적용, 평가하였다. 주요한 결과는 다음과 같다. (1) 방파제 배치 변화에 의한 조선 부담감의 차이는 그다지 크지 않다. (2) 동일한 방파제 폭일 경우에는 선박의 항행속력의 차이로 인하여 선박 운항자의 조선 부담감은 상이하다. (3) 방파제폭의 확장함으로써 선박 운항자의 조선 부담감이 평균적으로 감소한다.