• The Journal of the Acoustical Society of Korea
• /
• 제21권4E호
• /
• pp.146-155
• /
• 2002

We present a new technique for achieving source separation when given only a single charmel recording. The main idea is based on exploiting the inherent time structure of sound sources by learning a priori sets of time-domain basis functions that encode the sources in a statistically efficient manner. We derive a learning algorithm using a maximum likelihood approach given the observed single charmel data and sets of basis functions. For each time point we infer the source parameters and their contribution factors. This inference is possible due to the prior knowledge of the basis functions and the associated coefficient densities. A flexible model for density estimation allows accurate modeling of the observation, and our experimental results exhibit a high level of separation performance for simulated mixtures as well as real environment recordings employing mixtures of two different sources. We show separation results of two music signals as well as the separation of two voice signals.

• 한국음향학회지
• /
• 제21권4호
• /
• pp.146-146
• /
• 2002

We present a new technique for achieving source separation when given only a single channel recording. The main idea is based on exploiting the inherent time structure of sound sources by learning a priori sets of time-domain basis functions that encode the sources in a statistically efficient manner. We derive a learning algorithm using a maximum likelihood approach given the observed single channel data and sets of basis functions. For each time point we infer the source parameters and their contribution factors. This inference is possible due to the prior knowledge of the basis functions and the associated coefficient densities. A flexible model for density estimation allows accurate modeling of the observation, and our experimental results exhibit a high level of separation performance for simulated mixtures as well as real environment recordings employing mixtures of two different sources. We show separation results of two music signals as well as the separation of two voice signals.

• Nuclear Engineering and Technology
• /
• 제54권2호
• /
• pp.741-748
• /
• 2022

Policy literacy plays a critical role in enhancing deliberative communication among the public, policymakers, and experts. It also helps develop a positive view of policy by the public, which facilitates public acceptance. Despite its importance, however, policy literacy has received little attention in energy policy practice. Therefore, this study explores factors affecting the public's understanding and knowledge (i.e., policy literacy) of nuclear and new-renewable energy policies. Accordingly, we analyzed data from an online survey of 790 laypeople in Korea. Specifically, we examined the effects of trust, transparency, and policy public relations (PR) on the policy literacy of the public regarding the two alternative energy sources. The analysis revealed that people showed higher policy literacy about the alternative sources when provided with more transparent information and exposed to more policy PR activities. However, we found that trust in energy plant operators played a negligible role in improving policy literacy for both energy sources. Based on these findings, we developed some policy suggestions to secure the energy policy literacy of the public.

• 대한가정학회지
• /
• 제32권5호
• /
• pp.67-82
• /
• 1994

The major purpose of this study was to find the influencing factors in explaining information search patterns and to find if significant differences exist in search outcomes by search patterns. The data for this study were collected in a survey conducted in March of 1993. The final sample consisted of 327 respondents purchased refrigerator 340 purchased bed. The important findings of this study are as follows: First The variables related to search cost-benefit play an important role in identifying search patterns of consumers. Second search outcomes were different among four information search patterns for each of information sources. The overall search outcomes the level of purchase knowledge and of post-purchase satisfaction was relatively high for high-search and high-reliance group compared with other groups. And the results also indicate that although some consumers search less than others they still can make good purchase decision-making and can maximize their utility if they choose useful information sources selectively and use those selected information sources effectively. The findings of this study provide some implications regarding consumer education programs the consumer information providing policies and future research methods.

• 대한지리학회지
• /
• 제37권2호
• /
• pp.111-130
• /
• 2002

본 연구는 한국기업의 혁신네트워크와 지식획득과정을 분석하고 이들의 공간적 차원을 이해하는데 그 목적이 있다. 혁신네트워크에서 하도급기업에게는 모기업이 중요하지만 일반 기업의 경우는 공급업체, 고객업체. 경쟁기업 등과의 교류가 상대적으로 중요하게 나타난다 그러나 앞으로 혁신네트워크는 정부출연연구소. 대학 등의 기관이 더욱 중요해지는 한편 해외기업과의 네트워크도 더욱 중시될 것으로 예상된다. 혁신과 관련하여 형식적 지식을 획득하는 것은 어느 정도 공간의 제약을 초월하여 이루어질 수 있지만, 암묵적 지식은 사내연구개발부서에서의 토론과 연구, CEO나 실무자의 개인적 네트워크, 공급업체와 고객업체와의 기업간 관계를 통해서 얻는 경우가 많아서 공간적 근접성이 중시된다. 전반적으로. 혁신네트워크는 수도권과 지방, 공단입지와 일반입지에 따라 상당한 차이를 보이고 있으며. 이는 앞으로 지역발전을 위한 지역산업혁신정책은 지역의 특성에 따라 달리 추진되어야 함을 나타낸다 마지막으로 본 연구결과를 토대로 몇 가지 정책적 시사점을 제시하였다.

• 한국벤처창업학회:학술대회논문집
• /
• 한국벤처창업학회 2008년도 추계학술대회
• /
• pp.171-190
• /
• 2008

혁신은 현대 산업 사회의 특징적 요소가 되었다. 일반적으로 신지식과 기술은 혁신의 가장 중요한 요소들 중 하나로 인식된다. 그러나 한정된 자원으로 인해 기업들은 결정적인 혁신으로 발전될 가능성이 있는 모든 유망한 신지식과 기술을 추구하지는 못한다. 논문에서 저자는 이해관계자 이론을 사용하여 사회 내의 지식 창조와 혁신의 이해를 위해 적용될 수 있는 새로운 개념적 모형을 제시하기 위해 노력하였다. 사회는 다양한 사회적 경제적 집단이 존재하고 있으며 이들의 가치와 이해의 갈등과 충돌을 경험한다. 혁신을 이해관계자 이론을 통해 봤을 때 특정한 이해관계자들의 가치와 이해를 이전에 존재하는 것보다 더 잘 충족시킬 때만 혁신이 일어날 수 있다는 것을 말하고 있다 이러한 이해관계자 혁신 이론의 관점으로 보면, 세 가지의 다른 혁신의 유형이 있을 수 있다: 가치 발전적 혁신, 비전통적 가치적 혁신, 그리고 비전통적 이해관계자를 위한 혁신.

• 대한영양사협회학술지
• /
• 제22권3호
• /
• pp.179-192
• /
• 2016

The purpose of this study was to evaluate a nutrition education program designed to reduce sugar intake in preschool children. The nutritional knowledge, dietary attitude, dietary behavior, and food intake with a sweet taste in preschool children were tested before and after 4 weeks of nutrition education from March 8 to April 1, 2016. The preschool children were recruited in Dobong-gu, Seoul. The subjects were divided into two groups; educated (N=59) and non-educated group (N=40). Statistical analyseis were performed using SPSS 22. The nutritional knowledge about sweet tasting food was significantly increased (P<0.01) in the educated group and significantly decreased (P<0.01) in the non-educated group. The dietary attitude toward sweet tasting food was significantly decreased (P<0.05) in the educated group but not significantly changed in the non-educated group. The dietary behavior toward sweet tasting food was significantly decreased (P<0.05) in the educated group and significantly decreased (P<0.01) in the non-educated group. The major food sources of sugar intake were not significantly changed in either groups. The major food sources of sugar intake in the 5 years old children were yogurt products>sweetened breads>cookies/biscuits>chocolate>cereals>beverages>sweetened milk>sweet spicy chicken>Tteokbokki. Although there are some limitations in this study, due to the short length of the nutrition education and lack of active participation by the parents, the results suggest that effective nutrition education on sweet tasting food can bring about changes in nutritional knowledge as well as dietary attitude.

• 한국자원식물학회:학술대회논문집
• /
• 한국자원식물학회 2022년도 추계학술대회
• /
• pp.48-48
• /
• 2022

Ethnobotany is an interdisciplinary science at the intersection of botany and ethnology. Currently, there is a sharply increasing need for the study and conservation of traditional knowledge about plants. The loss of traditional sources, knowledge, and practices in using plants is caused by the growth of technologies in all branches of production, widespread urbanization, and globalization of the economy. This study was been conducted to collect and analyze the Koryoins (Koryo saram) traditional ethnobotanical knowledge, living in Uzbekistan, whose number 174,200 people. They are the descendants of Korean immigrants to the Russian Far East, who ended up in Central Asia as a result of the forced resettlement in 1937. In the processing of collected data, four main categories of uses were defined - Alimentary, Medicinal, Household/Handicraft, and Others. For quantitative data analysis, synthetic indices were used - RFC (Relative Frequency of Citation) and CI (Cultural Importance Index), which are commonly applied to assess the importance of plants. The respondents mentioned 72 plants belonging to 28 botanical families. A significant part of them was cultivar plants. The category that had the largest number of plants mentioned by the respondents was the Alimentary use category (51). According to quantitative indices rates, the most important plants are traditionally used for food. A comparison of ethnobotanical knowledge was made with the collected data of this study and Korean traditional knowledge.

• 한국간호교육학회지
• /
• 제6권1호
• /
• pp.115-131
• /
• 2000

The purpose of this study was to measure the knowledge, attitude and experience in sex for college students in oder to provide basic sex education information. For this study, the questionnaires were given to 316 students in the S college of Kyungi-do and collected during the period from March 22 to May 7, 1999. These results were analyzed statistically by means of frequency, percentage, t-test, one-way ANOVA. The results of this analysis are as follows. 1. The level of sexual knowledge related to sex was relatively high. The level of subjects knowledge was sexual Physiology, Generation Physiology, Venereal Disease and Genital Physiology. 2. The sources of sexual knowledge were friends 26.6%, expert books 23.4%, teachers 7.6%, mass-media 7.6% of subjects obtained. 3. Only 19.3% of subjects thought that pre-marriage virginity should be kept and there was difference of concept between males(3.48%) and females (15.8%). 4. The experience of masturbation was 28.5% of total. The subjects that had not experienced kiss were 51.6% of total. The subjects that experienced sexual intercourse were 76.9% of total and there were difference between both sexes(male: 54.0%, female: 82.6%).

• 한국조리학회지
• /
• 제10권4호
• /
• pp.31-49
• /
• 2004

Nowadays, a knowledge management becomes more important as it recognizes and utilizes a industrial knowledge as a significant sources for the improvement of enterprise competitiveness. Moreover, a industrial value tends to be evaluated by a knowledge value. In this study, influencing factors (processes, compensation system, leadership and information technology) on the knowledge sharing for strategies in foodservice Enterprise were investigated. For processes, it was important that the sharing and collecting factors for restaurants in hotel, the knowledge sharing and collecting for family-restaurants, the knowledge utilization and collecting for fast-food restaurants and the knowledge utilization and sharing for special restaurants. In compensation system, both mental and physical compensation were not related with the knowledge sharing in hotel-restaurants. On the other hands, the knowledge sharing in family-restaurants, fast-food restaurants and special restaurants was highly affected by the mental compensation, which indicated that food-service. Enterprise should lay emphasis on mental compensation than physical compensation. In industrial cultures, the influencing factors on the knowledge sharing were rational culture and progressive culture for restaurants in hotel and fast-food restaurants, and for special restaurants and family- restaurants, respectively. The ordering leadership was important factor for restaurants in hotel, fast-food restaurants and family-restaurants, while the knowledge sharing in special restaurants was more influenced by the supporting leadership. For information technology, it was important that the information utilization for restaurants in hotel, special restaurants and fast-food restaurants, and both information utilization and ability for family-restaurants.