• KIEAE Journal
• /
• 제10권1호
• /
• pp.3-10
• /
• 2010

Riverside forests make a river bank stable because trees of them hold together the stone and soil by roots and decrease the speed of running fluid by trunks. So they become known to have positive effects on flood prevention. So This study will be a basic study to preserve and restore of riverside forests. The goal of this study is to classify types of Han riverside forests between Yangpyeng and Yeoju gun. and find out sites of planting. Results of this study can be summarized as follows; The evaluation indicators were set up based on literature review and site survey. Two indicator categories were developed: natural environment and human environment. And they were divided into 5 sub-categories for calculating weights. As for the major indicator categories, the weighted index of natural environment is at 0.5. And the weighted index of human environment is at 0.5 followed by access at 0.15, the range of user at 0.15, cultivated land at 0.1 and legislation at 0.1. This study selected 53 sites for riverside forests planting. They were classified with types of bank(11), level-upped riverside(32), island(10). The amount of the length of 11 bank types is 23,050m, the area of 32 level-upped riverside types is $4,490,000m^2$ and the area of 10 island types is $4,590,000m^2$. After the evaluation of 53 riverside forests, this study selected 12 sites of riverside forests. They were two bank types, nine level-upped riverside types, and one island type. Rebuilding riverside forests are to accomplish the green network which links and divides region. It will be one of the best ecological methods to construct friendly environmental region.

• 말소리와 음성과학
• /
• 제4권1호
• /
• pp.13-20
• /
• 2012

A lax stop in Korean, one of the three laryngeal contrastive stops, has undergone a sound change in terms of its acoustic properties. Prior production studies described this recent lax stop as being differentiated from tense and aspirated stops primarily by fundamental frequencies (f0). And, the acoustic property of voice onset time (VOT) further separates tense stops from lax and aspirated stops. The current research explores how these two major acoustic parameters of f0 and VOT cue the three stop categories in Korean adult listeners' perception. Thirty-one native speakers of Korean participated in two experimental tasks: categorization judgment and within-category goodness ratings. Two sets of audio stimuli were prepared by synthesizing English and Korean male speakers' CV productions. The findings showed that while f0 cues listeners to lax stops as production patterns would predict, VOT were closely related to listeners' categorization and goodness ratings of lax stops. This suggests that accurate characterizations of the recent lax stop category need to be based on Korean speakers' perceptual behavior as well as production patterns.

• 수면정신생리
• /
• 제4권1호
• /
• pp.1-14
• /
• 1997

This paper reviewed models to explain memory and neuropsychological tests to assess memory. Memory was explained in cognitive and neuroanatomical perspectives, Cognitive model describes memory as structure and process. In structure model, memory is divided into three systems: sensory memory, short-term memory(working memory), and long-term memory. In process model, there are broadly three categories of memory process: encoding, storage, and retrieval. Memory process work in memory structure. There are two prominent models of the neuroanatomy of memory, derived from the work of Mishkin and Appenzeller and that of Squire and Zola-Morgan. These two models are the most useful for the clinician in part because they take into account the connections between the limbic and frontal cortical regions. The major difference between the two models concerns the role of the amygdala in memory processess. Mishkin and his colleagues believe that the amygdala plays a significant role while Squire and his colleagues do not. The most popular and widely used tests of memory ability such as WMS-R, AVLT, CVLT, HVLT. RBMT, CFT, and BVRT-R, were reviewed.

• 무역상무연구
• /
• 제48권
• /
• pp.27-56
• /
• 2010

Pollution emissions from international shipping and port activities have a significant impact on public health and global climate changes. The purpose of this paper is to review the status of pollution mitigation measures implemented to date in port industry and find out some implications for Korean ports. For this aim, the clean air strategies of the world major ports including six USA ports (Los Angeles/Long Beach, Now York/New Jersey, and Seattle and Tacoma), two European ports (Rotterdam and Gothenburg) and Busan Port were considered. Various measures to reduce emission from ports are evaluated by sectors-ocean going vessels, cargo handling equipments, truck and rail-, on the basis of categories such as reduction control technologies, operational changes and market-based measures. The policy implications of this paper are as follows. First, Clean Air Act Plans of Korean ports are required as soon as possible. Second, integrated approach is required to reduce emission effectively. Finally, the effect of port-related emission reduction can be maximized when various measures are conducted on a regional basis including neighboring ports. Furthermore, regional or global-based approach is useful to guarantee the level playing field among ports.

• 대한안전경영과학회지
• /
• 제8권2호
• /
• pp.25-38
• /
• 2006

It was investigated the current state of work-related musculoskeletal disorders (WMSDs), which is one of the major problems in occupational safety and health management. A survey was conducted for safety personnel serve in the enterprises located at two cities in Gyungbuk area, Gumi and Pohang where the major industrial complex reside. The goal of this study was to identify whether the category and scale of the enterprises affect the sort of hazard factors, occurrence rate, and countermeasures against WMSDs. The results from the survey indicated that there were significant differences in the level of recognition and counteracts for WMSDs among the enterprises subject to their categories and scales. On the basis of these results, it was considered a more efficient way of spreading proper ergonomic knowledge and skills to the industries that were coincided with the circumstances of individual enterprise.

• 한국항공운항학회지
• /
• 제6권1호
• /
• pp.125-145
• /
• 1998

The term "Privatization" has a different meaning in different contexts and cultures. In this paper, the term "Privatization" in the context of airports is defined as the movement of an entity from the government sector to the private sector. This is the definition that is commonly employed in the U.S. Airport revenue can he divided into two sub-categories of aeronautical revenue and non-aeronautical revenue. At many of the major international airports, however, non-aeronautical revenue has been growing faster than the aeronautical revenue, contributing an increasingly larger share of the total revenue. And the best way to enhance simultaneously the airport operations. With the remarkable growth in the air traffic volume of pssengers and cargo. more and more mega-international airports have been built or are under construction. As the air transport demand is expected to increase at an even greater rate in the 21st century, new types of airports which will be free of current major problems. such as airport congestion and flight delays are badly needed.

• Journal of Nutrition and Health
• /
• 제28권9호
• /
• pp.914-922
• /
• 1995

A food frequency questionnaire (FFQ), which can be used in studies investigating relationship between diet and chronic diseases in a rural area of Korea, was developed and validated. Food items were selected from two sources ; (1) preliminary survey in a rural area by 24-hour recalls and (2) National Nutritional Survey of 1991. Sixty-five food items were finally selected based on the frequency of consumption and contributions to major nutrient intakes. Portion size of each food item was determined considering the mean and median values of the amounts consumed by subjects in the preliminary survey. Frequency of consumption was asked in nine categories ranging from 'more than three times a day' to 'almost never'. The newly developed FFQ was administered in 24-hour recalls conducted in different seasons in the same area after the administration of FFQ. Sixty-one subjects completed both FFQ and all three repeated 24-hour recalls. The results of the two different survey methods showed that mean daily intake levels of energy, carbohydrate, vitamin A and vitamin C were significantly higher in FFQ compared to 24-hour recalls(p<0.05). Intake levels of energy, protein, fat, carbohydrate and iron were significantly correlated by Pearson's correlation coefficients(p0.05). Ranking on nutrient intake of the subjects by two method were significantly correlated(Spearman's correlation coefficients) in all above nutrients plus Ca and vitamin A. Percentage of subjects in the lowest or in the highest quintile by 24-hour recalls who belong to the nearest two categories by FFQ ranged from 46% to 83%, while the percentage falling into the opposite category were below 10% in most of the nutrients. The proportion of subjects classfied into the same quintiles by the two methods were between 23% and 33%, with an average of 28%. From the results, FFQ developed in this study seems to be useful in evaluating nutrient intake pattern of 1 year in adults living in rural area of Kyonggi province.

• 한국항만경제학회지
• /
• 제39권1호
• /
• pp.1-16
• /
• 2023

여수항은 화물기능이 광양항으로의 이전 완료됨에 따라 우리나라의 해양관광 거점 항만으로 거듭하는 비전을 수립하였으며, 크루즈육성을 통한 해양관광 산업 활성화가 주요 전략으로 인식되고 있다. 국내 주요 크루즈 관광 항만(부산항, 제주항, 인천항)은 2016년 수립된 '제1차 크루즈산업 육성 기본계획'에 부응하여 항만 크루즈 육성 기본계획을 수립하여 적극적으로 추진하고 있는 반면에 여수항은 크루즈 육성에 관한 계획 수립이 미흡한 상황이다. 코로나-19로 인해 침체기에 처해 있는 크루즈 관광업은 위드 코로나 및 포스트 코로나에 따라 회복될 것으로 예상되며, 여수항은 이에 대비하기 위한 크루즈산업 활성화를 선두로 추진할 필요가 있다. 이에 본 연구는 선행연구와 전문가 의견 수렴을 통해 여수항 크루즈산업 육성에 대한 평가항목을 도출하고 IPA(Importance Performance Analysis) 기법을 활용하여 여수항 크루즈산업에 관한 문제점 파악과 육성 방안을 제시하고자 한다. IPA 분석결과에 따르면 대분류 항목 중에는 크루즈 인프라 조성과 지원 체계 구축이 약점항목(중요도가 높으나 만족도가 낮은 항목)으로 평가되었으며, 두 대분류에 해당하는 소분류 항목(크루즈 선석 확장에 따른 운영 계획 수립, 연안/엑스포터미널 시설 개선 또는 크루즈터미널 신축, 전담조직 신설 및 담당인력 확보 외 4개)이 약점항목으로 도출되었다. 이러한 분석결과를 토대로 여수항 크루즈산업 육성 방안을 크루즈 인프라 조성, 노선확대 및 관광상품 개발, 지원체계 마련 등으로 제시하였다. 본 연구는 여수항이 크루즈산업의 육성, 나아가 한국 해양관광 거점 역할을 강화하기 위한 정책을 수립할 때 유용한 기초자료로 활용될 것으로 기대된다.

• 정보관리연구
• /
• 제37권1호
• /
• pp.83-103
• /
• 2006

본 연구에서는 키워드 검색의 단점을 보완하기 위해 다수의 웹 포털에서 제공중인 디렉터리 검색 서비스의 분류항목 및 정보자원에 대해 계량적으로 분석했다. 구체적으로는 Yahoo, Naver, Empas 등 3개 디렉터리 서비스의 주제별 분류항목, 주제별 정보자원, 그리고 분류항목 대비 정보자원의 계량적 분석을 시도했다. 이같은 분석결과, 각 디렉터리 서비스별로 차이를 파악해 볼 수 있다. 주제별 분류항목의 검토결과, 분야에 따라 순항목과 참조항목의 비율상 차이가 있고 형식구분의 성격인 주제분야에서 참조항목 전개비율이 높다는 것을 알 수 있다. 등록된 정보자원의 계량분석을 통해 규모의 관점에서는 야후의 등록자원이 가장 많으며, 디렉터리 서비스별로 주제별 정보자원의 다과를 파악할 수 있었다. 해당 분류항목에 분류된 정보자원의 수에 대한 계량적 분석은 뉴스, 미디어 분야를 중심으로 수행했으며, 이를 통해 엠파스나 네이버가 야후보다 등록자원에 비해 많은 분류항목을 전개하고 있다는 점을 알 수 있다. 또한 동일 정보자원이 분류된 깊이를 비교한 결과 야후가 한 단계 세분된 분류항목에 등록하고 있음을 알 수 있다.

• 한국조경학회지
• /
• 제30권4호
• /
• pp.28-36
• /
• 2002

The main purpose of this study was to estimate a new regression model to explain the relationship between urban forest and air temperature in summer, 2001. This study consists of two parts: correlation coefficient analysis and regression analysis. According to correlation coefficient analysis, thermal infra-red radiations of the major land use categories found significant difference in each category. However there were no significant relationship between the data (thermal infra-red radiation and NDVI) derived from Landsat-7 ETM+ image and air temperature at Automatic Weather Stations(AWSs). After estimating various regression models for summer air temperature, the final models were chosen. The final regression models consisted of two variables such as forest m and traffic facilities area. The regression models explained over 78% of the variability in air temperatures. The regression models with variables of forest area and traffic facilities area showed that the coefficient of the first variable was even more significant than the second one. However, the negative impact of the traffic facilities area was slightly greater than the positive impact of the forest area. Consequently, the effects of forest area and traffic facilities area were apparent to explain summer air temperature in Seoul. Therefore two policies have the most important implications to mitigate the summer air temperature in Seoul: to expand and to conserve the urban forest; and to change the Oafnc facilities'characteristics. The results from this study are expected to be useful not merely in informing the public that urban forest mitigates summer air temperahne, but in urging the necessity of budgets for trees and managing urban forests. It is recommended that field swey of summer air temperature be Performed for the vadidation of the models. The main purpose of this study was to estimate a new regression model to explain the relationship between urban forest and air temperature in summer, 2001. This study consists of two parts: correlation coefficient analysis and regression analysis. According to correlation coefficient analysis, thermal infra-red radiations of the major land use categories found significant difference in each category. However there were no significant relationship between the data (thermal infra-red radiation and NDVI) derived from Landsat-7 ETM+ image and air temperature at Automatic Weather Stations(AWSs). After estimating various regression models for summer air temperature, the final models were chosen. The final regression models consisted of two variables such as forest m and traffic facilities area. The regression models explained over 78% of the variability in air temperatures. The regression models with variables of forest area and traffic facilities area showed that the coefficient of the first variable was even more significant than the second one. However, the negative impact of the traffic facilities area was slightly greater than the positive impact of the forest area. Consequently, the effects of forest area and traffic facilities area were apparent to explain summer air temperature in Seoul. Therefore two policies have the most important implications to mitigate the summer air temperature in Seoul: to expand and to conserve the urban forest; and to change the traffic facilities'characteristics. The results from this study are expected to be useful not merely in informing the public that urban forest mitigates summer air temperature, but in urging the necessity of budgets for trees and managing urban forests. It is recommended that field survey of summer air temperature be Performed for the vadidation of the models.