• The Korean Journal of Ecology
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• 제19권5호
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• pp.465-476
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• 1996

There are several environmental variables that may be influential to the spatial distribution of forest vegetation. To create a map of forest vegetation zone over southern part of Korean Peninsula, digital map layers were produced for each of environmental variables that include topography, geographic locations, and climate. In addition, an extensive set of field survey data was collected at relatively undisturbed forests and they were introduced into the GIS database with exact coordinates of survey sites. Preliminary statistical analysis on the survey data showed that the environmental variables were significantly different among the previously defined five forest vegetation zones. Classification of the six layers of digital map representing environmental variables was carried out by a supervised classifier using the training statistics from field survey data and by a clustering algorithm. Although the maps from two classifiers were somewhat different due to the classification procedure applied, they showed overall patterns of vertical and horizontal distribution of forest zones. considering the spatial contents of many ecological studies, GIS can be used as an important tool to manage and analyze spatial data. This study discusses more about the generation of digital map and the analysis procedure rather than the outcome map of forest vegetation zone.

• 가족자원경영과 정책
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• 제1권1호
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• pp.101-115
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• 1997

This study was designed to examine the socialization of household work utilizing ecological theory. The main purposes were to identify the socialization level, and to predict the socialization of household work in term of the selected variables. The sample was drawn from housewives of expanding stage of family life cycle in Seoul. 518 respondents were analyzed using SPSS/PC+ statistical package. The results of this study were as follows: 1. Among the variables of food area, education of housewife, type of housing, family income, number of children had significant influence. 2. Among the variables of clothing area, family income was the only important variable. 3. Among the variable of housing area, number of household equipment, number of aids for household work, education of housewife, family income, attitude of housewife’s role, number of aids for household work had significant influence. 4. Among the varables of home management area, number of household equipment, family income, self control had significant influence. 5. Among the environment variables of household work, social-cultural environment had the most important effect on the socialization of household work.

• 대한가정학회지
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• 제38권12호
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• pp.47-58
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• 2000

The purpose of this study was to investigate working mothers'parenting stress. The study was approached from an ecological perspective. Data were collected from 185 mothers who were professionals, office or labor workers, and have their children enrolled at the day care center located at their workplace. All the subjects lived in Seoul. The results of this study were as follows: 1. The working mothers'parenting stress was found to be at a moderate level(Mean=2.30). 2. The hierarchical and stepwise regression analyses revealed that significant variables in explaining the parenting stress of working mothers were the degrees of attachment with the subject's mother($\beta$=-.24), age($\beta$=-.23), the degrees of flexibility in working conditions($\beta$=-.19), educational level($\beta$=.18), the degrees of husbands'participation in child care($\beta$=-.17), and the number of children ($\beta$=.16). These variables explained 17.2% of working mother's parenting stress. 3. It was found that the effect of microsystem variables on working mothers' parenting stress were greater than the combined effects of mesosystem, exosystem and macrosystem variables.

• Journal of Ecology and Environment
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• 제36권1호
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• pp.89-94
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• 2013

Diatoms have become an integral part of the UK's freshwater monitoring strategy over the past two decades, mostly in response to increasingly stringent European Union (EU) legislation. The use of diatoms is based on strong correlations between diatom assemblages and environmental variables, and from knowledge of the "expected" (= "reference") state of each river. The nationwide overview of the ecological health of rivers this gives allows those stretches of rivers which fail to meet EU criteria to be identified. This, in turn, allows appropriate remediation measures to be planned. Because diatom assemblages vary in space and time, even within a single water body, effective use of diatoms requires a consistent approach in order to minimise uncertainty. This includes the use of methods which comply with European Standards, a training and accreditation scheme for analysts, and a suite of quality assurance methods. Those aspects of uncertainty that cannot be readily controlled have been quantified and all estimates of ecological status are accompanied by the appropriate "confidence of class" and "risk of misclassification". This, in turn, helps planners prioritise those locations which are most likely to benefit from remediation.

• 조형예술학연구
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• 제13권1호
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• pp.23-37
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• 2008

Recently, there are getting popular form generation-related design methodologies and scientific discourses about the nature of nature in the environmental design. The necessity of visual perception and cognitive research is growing in this respect. Accordingly, this study was designed to discuss environmental design and cognition in the ecological perspective. This study was intended to study the structural factors of cognitive ecological space. This study focused on the systematic principle of new environmental design based on cognitive ecological approaches and what kinds of design effects this design principle has on the human being in the long nm. The results are as follows. First, the results suggests that fractal pattern should be an alternative to design cognitive ecological space and new paradigm of architecture is based on the nature of nature and human sensibility. Accordingly, they have proposed that fractal design is more empirical and environment-friendly than rational linear design. Second, this study classified the variables of cognitive ecological space into nature, tradition, preference judgement, aesthetic value, and schema. Accordingly, such features as symbol, tradition, and nature restricted by modernistic ideology should be added to new paradigm-based environmental design. Third, accordingly, this study stresses that cognitive ecological environmental design doesn't include buildings of modernism and deconstruction and is based on new science of complexity.

• 한국환경복원기술학회지
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• 제23권4호
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• pp.85-96
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• 2020

The honeybee serves for most entomophilous flowers. They are a core species for maintaining the ecological system. Though the urban ecological system needs bees' mediation of pollination as well, we have little understanding on how the honeybee reacts to the physical environments of an urban city. This study is a basic research to enhance the potential environment for pollination in an urban area and aims to review the urban environmental variables which are highly linked to the pollination mediations by the honeybee. The study composed a Maxent model by adopting nine urban environmental variables and the locations of the Apis mellifera's appearances around 52 spots in Seoul. The variables reflect the ecology of the Apis mellifera. Of the urban environmental variables used for the model composition, six variables were found as not having meaningful correlations with the Apis mellifera's appearances and finally, building coverage, actual vegetation and land cover were selected as the appearance variables of the Apis mellifera. The AUC, the reliability indicator of the final model was 0.791 (sd=0.077). And the importance data of the variables used for the model were 55.6%, 27.9%, and 16.5% for building coverage, actual vegetation and land cover, respectively. The result of the study showed that the building coverage has the highest correlation with the appearance of the honeybee. And, as per the actual vegetation, the artificially tree planted area as well as the cultivated field and meadow in an urban area were functioning as the most important environmental conditions for the honeybee to be inhabitable. The study is expected to be utilized as the base material for the urban planning and park green area planning to enhance the potential environment for pollination in an urban area.

• Journal of Forest and Environmental Science
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• 제32권1호
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• pp.94-98
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• 2016

Calamus andamanicus Kurz is one of the commercially important solitary rattans endemic to Andaman and Nicobar islands. The habitat suitability modeling program, MaxEnt, was used to predict the potential ecological niches of this species, based on bioclimatic variables. The study revealed high potential distribution of C. andamanicus across both Andaman and Nicobar islands. Of the 33 spatially unique points, 21 points were recorded from South and North Andamans and 12 from Great Nicobar Islands. The islands like Little Andaman, North Sentinel, Little Nicobar, Tllangchong, Teressa were also predicted positive even though this rattan is not recorded from these islands. Mean diurnal range, higher precipitation in the wettest month of the year, annual precipitation and precipitation in the driest month are the main predictors of this species distribution.

• 대한가정학회지
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• 제36권12호
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• pp.145-160
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• 1998

The purpose of the study were two fokls: to investigate causes of wife abuse through both husbands and wives as the research subject and through ecological perspective as a theoretical framework. Data were collected using self-reporting questionnaires distributed to 400 couples in Seoul and Taegu. 280 questionnaires were used in the final analysis. The major findings of the study were summarized in the following. First, the percentage of samples who reported one or more instances of acts in each scale was 84.3%(236 couples). They reported having been a vicitm of abuse by their partners at least one instance in the preceding 12 months. Secondly, the hierarchical and stepwise regression yielded the result that wife abuse behavior by husbands was influenced by husband's microsytem(e.g.job stress, marital satisfaction, education level and occupation) and organism variables(e.g. husband's perceptions about the violence level of mass media, childhood observation of parental violence, childhood experience of the battering). These variables accounted for 38% of variance of wife abuse behavior among Korean husbands.

• Journal of Ecology and Environment
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• 제43권2호
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• pp.191-201
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• 2019

Macroecologists and biogeographers continue to predict the distribution of species across space based on the relationship between biotic processes and environmental variables. This approach uses data related to, for example, species abundance or presence/absence, climate, geomorphology, and soils. Researchers have acknowledged in their statistical analyses the importance of accounting for the effects of spatial autocorrelation (SAC), which indicates a degree of dependence between pairs of nearby observations. It has been agreed that residual spatial autocorrelation (rSAC) can have a substantial impact on modeling processes and inferences. However, more attention should be paid to the sources of rSAC and the degree to which rSAC becomes problematic. Here, we review previous studies to identify diverse factors that potentially induce the presence of rSAC in macroecological and biogeographical models. Furthermore, an emphasis is put on the quantification of rSAC by seeking to unveil the magnitude to which the presence of SAC in model residuals becomes detrimental to the modeling process. It turned out that five categories of factors can drive the presence of SAC in model residuals: ecological data and processes, scale and distance, missing variables, sampling design, and assumptions and methodological approaches. Additionally, we noted that more explicit and elaborated discussion of rSAC should be presented in species distribution modeling. Future investigations involving the quantification of rSAC are recommended in order to understand when rSAC can have an adverse effect on the modeling process.

• 한국환경복원기술학회지
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• 제24권1호
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• pp.25-36
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• 2021

The honey bee has a crucial ecological status for maintaining the natural ecology system. Pollination mediations by honey bees are recognized as an efficient way to enhance the quality of biological diversity and green areas in the nature and the urban ecological system. However, the population of bee around the world is decreasing and we do not know exactly how bees react to the physical environment in the urban area. This study is a basic research for the improvement of pollination services in the Korean urban ecological system. It aims to induce and review environmental variables which have high relations with the activities of pollination mediation insects in the urban area. The study established a Maxent model using five urban environmental variables that reflect the ecology of Bombus ignitus and the place information where Bombus ignitus appears in 18 spots of Seoul city, and compared with previous research results on Apis millifera. Bombus ignitus preferred places with more natural environments such as mountain forest areas and vicinities of streams. They preferred Stratified Tree Area the most among the vegetation types existing in the urban area. Comparing chicken models, both species saw their response value drop as the building coverage rose. In the case of Apis millifera and Bombus ignitus variables, the response value of both species was high in 10 out of 20 types. The result of this study is expected to provide basic information for improving the pollination services in the Korean urban area and to be utilized as the basic materials for the future urban planning.