• Title/Summary/Keyword: Environmental Factor Analysis

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A Study of Connection Stability for Reinforced Retaining Wall Constructed with Soilbag with Varying Connection Strength (연결강도 변화에 의한 Soilbag 보강토 옹벽 연결부의 안정성 평가)

  • Lee, Sang-Moon;Choi, Changho;Shin, Eun-Chul
    • Journal of the Korean Geosynthetics Society
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    • v.12 no.1
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    • pp.101-107
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    • 2013
  • Environmental-friendly and economical construction are the recent issues for civil structures and soilbag as facing wall is widely used for cut-slope remediation projects. However, the stability of structures is an important issue for the use of environmental-friendly and economical materials. In order to understand the stability of soilbag reinforced retaining wall, tensile resistance, rupture, tensile strength, and internal/external safety factor of the wall were analyzed with MSEW program and the results were compared to the safety factor of block-type reinforced walls. The stability of retaining wall was analyzed with reduction coefficients of connection strength to check the connection stability. Because it is possible to move between soilbag and geogrid connector for soilbag retaining wall, the safety factor of the wall was analyzed with different inclination angles of soilbag. The analysis result shows that the connection strength and internal/external stability of soilbag reinforced wall satisfy the stability criteria.

Effects of Neighborhood Environment on Women's Neighborhood Satisfaction, Neighborhood Attachment and Housing Mobility - An Empirical Study of Asan City in the South Chungcheong Province - (여성들의 동네만족도와 동네애착, 이주의사에 영향을 미치는 근린환경특성에 대한 실증분석 - 충청남도 아산시를 대상으로 -)

  • Park, Hyo-Sook;Lee, Kyung-Hwan
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.34 no.1
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    • pp.71-81
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    • 2018
  • The purpose of this study is to develop neighborhood assessment tools from the perspective of women in order to evaluate neighborhood environments and suggest better policies and planning practices for women-friendly neighborhood environments. To do so, we analyze correlations between women's quality of life and the neighborhood environment. Specifically, we gave female participants a mapping survey, interview, and questionnaire to collect data targeting women living in Onyang 2-dong and 5-dong in Asan city. First, we developed a neighborhood assessment tool derived from an extensive literature review and particular case studies. The mapping and interview surveys indicated that specific aspects neighborhood life needed to be improved in a similar area. In particular, women complained about Onyangoncheon station, a commercial area, and detached house area. Second, analysis of the neighborhood environmental factors affecting women's neighborhood satisfaction, crime safety, traffic and walking environment, accessibility of living facilities, green and public spaces and childcare environment were statistically significant. Of these, the inclusion of green and public spaces was the most influential factor. Third, the neighborhood environmental factors affecting women's neighborhood attachment, crime safety, traffic and walking environment, accessibility of living facilities, green and public spaces and childcare environment were statistically significant. Of these, accessibility of living facilities appeared to be the most influential factor. Fourth, the neighborhood environmental factors affecting women's housing mobility decisions, crime safety, traffic and walking environment, accessibility of living facilities, green and public spaces and childcare environment were statistically significant. Of these, childcare environment was the most influential factor.

A Study of the Effect of Environmental Characteristics on Overall Service Quality, and Repurchase Intentions in Korean Foodservice Firms (한식 외식업체의 환경특성이 서비스품질과 재구매 의도에 미치는 영향)

  • Lee, Geum-Rye;Yoo, Young-Jin;Park, Geum-Soon
    • Journal of the Korean Society of Food Culture
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    • v.20 no.6
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    • pp.661-667
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    • 2005
  • This study was to examine the effect of the environmental characteristics on overall quality of employee and food service in Korean foodservice firms. The four factors of the environmental characteristics of Korean foodservice firms consist of service, atmosphere, food & beverage, and event. To analyze the data collected from 414 respondents, the several statistical methods were used including frequency and descriptive analysis, factor analysis, reliability test, and multiple regression analysis. The empirical results are as follows: First, the employee service factor has a significantly positive effect on overall employee service quality. Second, the food & beverage factor has a significantly positive effect on overall employee service quality. Third, the food & beverage factor has a significantly positive effect on overall food & beverage service quality. Fourth, the event factor has a significantly positive effect on overall food & beverage service quality Managerial implications can be drawn from the present data. First, Korean restaurant managers can identify which factors of environmental characteristics influence customers' attitudes and evaluations in service encounter. Second, Korean restaurant managers can use the environmental characteristics as differentiation strategy, and allocate their resources into the activities of marketing strategy.

The Direction of School Forest Plans Considering Satisfaction of Elementary Students (초등학생들의 만족 유형을 고려한 학교숲 조성방향)

  • Jang, Cheol-Kyu;Jung, Sung-Gwan;Jang, Jung-Sun;Kim, Kyung-Tae;Oh, Jeong-Hak
    • Journal of the Korean Institute of Landscape Architecture
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    • v.37 no.4
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    • pp.42-51
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    • 2009
  • The purpose of this study is to analyze the actual conditions of school forests using a field survey and to establish the construction methods considering satisfactions of students using a satisfaction inquiry. The results of the this study are as follows: many trees had the highest score whereas reduction of noise had the lowest score in the satisfaction analysis of 15 items. According to the result of the factor analysis, 3 factors were determined to be most important from 15 items of satisfaction, and they were Environmental Function, Educational and Recreational Function, and Ecological Function. Next, students were classified into 4 groups using factor scores by cluster analysis. Group I had very high effectiveness in the Environmental Function and group II had low effectiveness in all factors. Also, group III had very high effectiveness in the Educational and Recreational Function, and group IV had very high effectiveness in the Ecological Function. According to the analysis results of the character of the school on students' group, the satisfaction of school forests was high when students of group II were few and other group's students were similar. As these schools use a lot of parts of the playground for green space, there was more school forest than at other schools. Also, students of these schools were experiencing the school forest through educational programs. Therefore, school forests should be constructed by increasing the green area and considering the satisfaction factors of students through various experience and education programs and by the way utilizing wide space than adding the tree in the garden.

A Study on Residents' Subjective Evaluation of the Elderly Housing Environment in the Suburbs of Chiba City, Japan (고령자거주요소에 대한 거주자의 주관적 평가연구 - 일본치바시근교의 유료노인시설을 대상으로 -)

  • CheHuiJohn
    • Journal of the Korean housing association
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    • v.7 no.2
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    • pp.139-151
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    • 1996
  • The Purpose of this study is to examine residents' subjective satisfaction of the elderly housing environment and to suggest some major factors which can be used as basic design guidelines for the elderly housing. as the number of the elderly is growing in Japan For this purpose. data were collected through a questionnaire survey method, Some questions on their hope for the conditions of the elderly housing were asked to 265 old People living in the suburbs of Chiba city. Japan. Based on the findings of the statistical factor analysis, the major factors which affected on the elderly housing environment of the study can be summarized as follows ;(1)Factor1 is correlated with the space design element represented by the elderly dwelling performance and overall efficiency for the dwelling exterior space design (2)Factor2 is relative to the interior environmental element with Physiological and sensitive performance for borne services system. (3)Factor3 can be explained the moving and communication performance for Physical uneasiness of outdoor activities and request of public cultural spaces. (4)Factor4 is relative to the mental rest element with safety accidents for moving activities etc. and psychological isolation for the elderly.

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A Study on College Students' Menu Choice Behavior by Food Choice Factor (음식 선택 요인에 따른 대학생의 메뉴 선택 행동에 관한 연구- 대전.충남 지역 대학생을 중심으로 -)

  • Kim, Keun-Jong;Chun, Myung-Sook
    • Culinary science and hospitality research
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    • v.13 no.4
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    • pp.186-198
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    • 2007
  • Recently, the desire of the students has been changing variously as time passes and its speed is being accelerated. In this respect, this paper aims to demonstrate college students' menu choice behavior. In order to attain the object of this paper, college students in Chung-Nam Province including Daejeon city have been studied. There are many kinds of manu choice factors in food-industry. One of the methods of this study is Khan's food choice factor. The results of this analysis suggest that hypothesis 1-1, the environmental factors for college students were verified as significant effects on menu choice behavior of other people and also hypothesis $1{\sim}2$, self oriented for menu choice behavior showed significant effects. As a result, Khan's food choice behavior should be comparative to each factor focused on diversified environments. And also each factor is not strongly affected in relation to food choice factor. Therefore, students' menu choice behavior will be measured by verifying factors.

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A study on the Selection Attributes and Purchasing Behavior of Protein Fortified Snack and Vegan Snack (고단백 스낵과 비건 스낵에 대한 선택속성과 구매 행동 연구)

  • Park, Hee Ran;Cho, Mi Sook
    • Journal of the Korean Society of Food Culture
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    • v.36 no.4
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    • pp.373-381
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    • 2021
  • The number of vegans has increased rapidly due to religious and ethical beliefs, environmental concerns, health, etc. Also, as interest in healthy and safe food increases, the demand for organic products or nutrition-enhanced products is increasing. Therefore, this study aimed to investigate the selection attributes and purchasing behavior for protein-fortified and vegan snacks. It is anticipated that the results would find use as basic data for developing protein-fortified snacks for vegans that can meet consumer needs and derive marketing strategies. A survey was conducted on 140 consumers. According to the analysis of their purchase behavior, the number of people who had purchased high-protein snacks and vegan snacks was higher than those who did not have prior experience. The reasons for the purchase of protein fortified snacks included 'meal replacement' at 'offline-convenient store/supermarket'. Vegan snacks were purchased for 'ethical beliefs, health, environment' at 'offline-vegan restaurant, bakery'. Both snacks showed above-normal preferences. However, it is necessary to improve taste and flavor when developing these products as these were the factors that negatively impacted the preferences. The attributes were factorized into the 'showing off factor', 'sensory factor', 'credence factor', and 'functional factor' and the 'sensory factor' was considered the most important.

Depletion of Phosphorus in Mountain Soil and Growth Stimulation of Panax ginseng by Phosphorus Enrichment

  • Choi, Yong-Eui;Yi, Myong-Jong;You, Kyung-Ha;Bae, Kee-Hwa;Han, Jung-Yeon;Yi, Jae-Seon
    • Journal of Korean Society of Forest Science
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    • v.98 no.2
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    • pp.170-177
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    • 2009
  • There are remarkable differences in growth and morphological characters of roots between mountain and field cultivated Panax ginseng. Growth of root in mountain cultivated ginseng was much slower than that of field cultivated ginseng. However, the factor affecting the retarded growth in mountain ginseng was not known. Soil analysis revealed that phosphorus (P) content of mountain soil was exceptionally low at least ten-fold lower compared to that of field soil. Thus, we suggest that low availability of P in mountain soil may be one of the limiting factors for growth of ginseng in mountain soil environment. We had monitored the growth of ginseng plants after one and three years of phosphate fertilizer application. Three kinds of phosphate fertilizers: fused magnesium phosphate, fused superphosphate, and single superphosphate were applied to mountain soil. Application of phosphate fertilizers increased the fresh-, dry weight, and diameter of ginseng roots and resulted in increased P accumulation in roots. These results demonstrate that slow growth of ginseng in mountain soil environment might be attributed to the low P content in mountain soil. Thus, analysis of P amount in mountain soil will be a good indicator for the selection of suitable site the ginseng cultivation in forest.

Principal Component Analysis Based Ecosystem Differences between South and North Korea Using Multivariate Spatial Environmental Variables (다변량 환경 공간변수 주성분 분석을 통한 남·북 생태계 차이)

  • Yu, Jaeshim;Kim, Kyoungmin
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.18 no.4
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    • pp.15-27
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    • 2015
  • The objectives of this study are to analyze the quantitative ecological principal components of Korean Peninsula using the multivariate spatial environmental datasets and to compare the ecological difference between South and North Korea. Ecological maps with GIS(Geographical Information System) are constructed by PCA(Principal Component Analysis) based on seventeen raster(cell based) variables at 1km resolution. Ecological differences between South and North Korea are extracted by Factor Analysis using ecosystem maps masked from Korean ones. Spatial data include SRTM(Shuttle Radar Topography Mission), Temperature, Precipitation, SWC(Soil Water Content), fPAR(Fraction of Photosynthetically Active Radiation) representing for a productivity, and SR(Solar Radiation), which all cover Korean peninsula. When it performed PCA, the first three scores were assigned to red, green, and blue color. This color triplet indicates the relative mixture of the seventeen environmental conditions inside each ecological region. The first red one represents for 'physiographic conditions' worked by high elevation and solar radiation and low temperature. The second green one stands for 'seasonality' caused by seasonal variations of temperature, precipitation, and productivity. The third blue one means 'wetness condition' worked by high value such as precipitation and soil water contents. FA extraction shows that South Korea has relatively warm and humid ecosystem affected by high temperature, precipitation, and soil water contents whereas North Korea has relatively cold and dry ecosystem due to the high elevation, low temperature and precipitation. Results would be useful at environmental planning on inaccessible land of North Korea.

A Study on the Comparative Analysis and Improvement of Indoor Environmental Factor in Green Building Rating Systems (국내외 친환경건축물 인증제도 실내 환경 관련 부문 비교분석 및 개선안 연구)

  • Joh Hahn
    • Korean Institute of Interior Design Journal
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    • v.15 no.4 s.57
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    • pp.21-28
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    • 2006
  • To promote environmentally responsible architectural practice, many nations have established their own green building rating system. Among other criteria, recently the indoor environmental quality section has been paid great attention due to Sick Building Syndrome, as this believed to caused by polluted indoor environment. In this context, indoor environmental quality is one of very important sections of each green building rating system and closely related to the very happiness of building users. The goal of this research is to compare and analyze the indoor environmental sections of three green building rating systems, GBCC, LEED v2.1, and BREEAM Office 2005, and find a direction for the improvement of GBCC. First, the three rating systems are analyzed in general to compare the importance of indoor environmental factors in each system. Second, the indoor environmental factors are reclassified within related sub-categories for the comparable analysis. Finally, based upon the comparable analysis, directions for the improvement of GBCC are as follows: 1. GBCC's h4r Environment Section needs to clarify its VOCs criteria based upon types of finish materials. 2. Sound Environment Section's noise control criteria needs to be revised based upon types of building usages and application method. 3. An indoor lighting related section needs to be included in GBCC, as even though light is the one of the most important factors in indoor environment, it has not been included in GBCC yet. 4. The sub-section of Confortable Indoor Environment Section related to the resting space and the universal accessibility are not in accord with the goal of green building rating system. These items need to be dealt within general building codes. 5. The rating evaluation structure and process need to be streamlined.