• 제목/요약/키워드: environment variables

검색결과 3,557건 처리시간 0.034초

Maxent 모델을 이용한 양봉꿀벌의 서울시 수분 잠재환경 분석 (The Analysis of Pollination Potential Environment for Apis mellifera in Seoul Using Maxent Modeling Approach)

  • 김윤호;조용현;배양섭;김다윤
    • 한국환경복원기술학회지
    • /
    • 제23권4호
    • /
    • pp.85-96
    • /
    • 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.

청소년의 사회측정적 인기도에 영향을 미치는 생태학적 변인 (The Ecological Variables on Adolescent's Popularity)

  • 도금혜
    • 가정과삶의질연구
    • /
    • 제25권4호
    • /
    • pp.43-55
    • /
    • 2007
  • The Purpose of this study was to investigate the ecological variables on adolescent's sociometric popularity. Independent variables were organism(sex, age, aggression, self-esteem, impulsiveness, prosocial behavior, dominance), microsystem(parenting style, family support, friends relationship, teacher support), mesosystem(family-peer relationship, family-school relationship), and exosystem(positive community environment, social support of extended family, school's policy). The subjects were 835 - 1st and 2nd graders of two middle and two high schools in Daegu. Adolescent's sociometric popularity and ecological variables were measured with questionnaire. Adolescent's sociometric popularity was measured with sociometric popularity questionnaire. Organism variables were measured with sex, age, aggression, self-esteem, impulsiveness, prosocial behavior and dominance questionnaire. Microsystem variables were measured with parenting style, family support, friends relationship and teacher support questionnaire. Mesosystem variables were measured with family-peer relationship and family-school relationship questionnaire. Exosystem variables were measured with positive community environment, social support of extended family and school's policy questionnaire. The data analyzed by frequency, percentage, mean, cronbach's $\alpha$, and multiple regression. The major findings were as follows: First, adolescent's sociometric popularity was affected by age, overt aggression, academic self-esteem, social self-esteem, and impulsiveness of organism variables. Second, adolescent's sociometric popularity was affected by mother's affectional parenting, mother's control parenting, and attachment to friends of microsystem variables. Third, adolescent's sociometric popularity was affected by family - peer relationship and family - school relationship of mesosystem variables. Fourth, adolescent's sociometric popularity was affected by appraisal support of extended family, after-school activity, and circle activity of exosystem variables.

전남 친환경농업혁신 시범단지의 체험의향 및 차별성 요인 분석 (An Analysis on the Experience Intent and Differentiation Factors of environment-friendly Agriculture Innovation in Jeonnam Province)

  • 송경환;이상호
    • 한국유기농업학회지
    • /
    • 제28권4호
    • /
    • pp.477-490
    • /
    • 2020
  • In this paper, the factors influencing the differentiation of environment-friendly agricultural products from the intention of environment-friendly farming experience were analyzed through logit analysis. The main analysis results are summarized as follows. First, the contents to experience in environment-friendly agricultural innovation in Jeonnam province are environment-friendly agricultural product harvesting (33.8%), making food using environment-friendly agricultural products (24.1%) and environment-friendly ecological experience (20.1%). Second, significant variables affecting the intention to experience environment-friendly agriculture were analyzed as whether they were members of the consumer cooperative, whether they were children under the age of two, and whether they were children under the age of high school. In other words, it was analyzed that the more members of the consumer cooperative, the more families with children under the age of two, and the more families with student children, the more likely they are to participate in environment-friendly farming experiences. Third, significant variables that affect the recognition of the differentiation of environment-friendly agricultural products in Jeonnam province were found to be environment education and dual income. In other words, it is analyzed that consumers who receive environment education and dual-income families are more likely to recognize environment-friendly agricultural products in Jeonnam province differently than in other regions.

An Empirical Study on the Determinants of Intention to Use B2B e-Marketplace

  • An, Youngsin;Yang, Haesool
    • 한국컴퓨터정보학회논문지
    • /
    • 제22권9호
    • /
    • pp.155-161
    • /
    • 2017
  • As the e-marketplace becomes the core of management activities, researches on motivation, transaction type, strategy, satisfaction, risk management, performance evaluation, etc. have been actively studied, but the factors influencing actual utilization have not been fully. Especially, the factors that affect the intention of the users are limited without consideration of internal environment, external environment, e-marketplace characteristics such as operating rules, characteristics of the company to be used. In order to derive the determinants of B2B e-marketplace use, this study was conducted to examine the relationship between internal environment, external environment, e-marketplace characteristics as independent variables, intention of use as dependent variable, participation qualification, The results were as follows. First, the previous study limited the determinants of intention to use to either internal or external, but this study presented an integrated model that considers both factors. Second, the characteristics of companies participating in e-marketplace were identified by using participation qualification and activity scope as control variables.

대학생의 환경친화적 소비자 행동과 환경의식적 시민행동 성향 - 청주시 대학생을 중심으로 - (Pro-environmental Consumer and Environmentally Conscious Citizen Behavior Tendency of University Students in Cheongju)

  • 김인숙
    • 한국생활과학회지
    • /
    • 제11권3호
    • /
    • pp.249-262
    • /
    • 2002
  • This paper was written to find the tendency of pro-environmental consumer behavior and environmentally conscious citizen behavior of university students. The difference between two behavioral tendencies were existed and variables influenced on those tendencies each other. The results were as follows: 1. The pro-environmental consumer behavior of university students was consisted of five tendencies, such as practice in life, environment preservation, environment consideration, patience in uncomfortableness and diversity in circumstances. 2. The environmentally conscious citizen behavior of University students were consisted of four tendencies, such as environment contamination, self-centered, resource economy, pollution reduction. 3. The pro-environmental consumer behavior tendencies of university students were inconsistent with those of environmentally conscious citizen behavior. 4. The variables influenced on those tendencies were sex, concern in environment problem and living condition.

  • PDF

노인의 성격상응요인과 생활만족도에 관한 연구 (A Study of Personality adaptation factor and Life Satisfaction of the aged)

  • 김현진
    • 대한가정학회지
    • /
    • 제30권2호
    • /
    • pp.171-187
    • /
    • 1992
  • The purpose of this study is to investigate personality adaptation factors related to life satisfaction of the aged. Personality adaptation factors were classified into four factors(The active-intergration, The dependent-passivity, The failing-overaboundance, The self-negativity). The hypothesises of this study are as follow : (1) Personality adaptation factors can be predited by demographic variables and family environmental variables. (2) Life Satisfaction can be predited by demogaphic variables and family environmental variables. (3) Each personality adaptation factors will be correlated with life satisfaction. For the test of hypothesises, Questionnaries were given to the randomly selected 332 persons over age 60 in Pusan. Questionnaries consist of 4 parts. These are demographic part, family environment part, personality adaptation factor part, and life satisfaction part. The data collected were analyzed by satistical methods such as Case, Percentage Factor Analysis, Multiple Regression Analysis, and Pearson's Correlation. According to the results of the analysis of this study, primary, personality adaptation factor is decided by personal problem. But, this personality adaptation factor of the aged is affected by family environment. Particulary, in the results of the study, frequent communication with their family is more important than physical solidary.

  • PDF

이질적인 정보기술 사용 환경 하에서의 기술수용모델(TAM)에 대한 연구 (A Study on the TAM(Technology Acceptance Model) in Different IT Environments)

  • 김준우;문형도
    • Journal of Information Technology Applications and Management
    • /
    • 제14권4호
    • /
    • pp.175-198
    • /
    • 2007
  • Technology Acceptance Model (TAM) has been a basis model for testing technology use. Post researches of TAM have been conducted with the updating the TAM by adding new independent variables in order to increase the explanation power of the model. However, one problem is that different independent variables have to be introduced to keep the explanation power whenever applying to particular technology. This reduces the generality of the research model. Thus in order to increase the generality of the model, this study reviewed the previous researches and collected the independent variables used, and regrouped them into three basic independent constructs. New research model was designed with three basic independent constructs with four constructs selected for the mandatory IT environment and voluntary IT environment, and the structured equations analysis(AMOS) was applied to find the significant causal effect relationships between constructs in addition to the explanation power of the model. Finally, this study concluded that new TAM could be used to explain the users' adopting new technology without any adding new particular independent variables.

  • PDF

유아의 리더십과 관련된 변인 연구 : 유아의 개인 변인과 환경 변인을 중심으로 (Variables Related to Leadership of Young Children: A Focus on Individual Variables and Environmental Variables)

  • 서기남;문혁준
    • 대한가정학회지
    • /
    • 제47권5호
    • /
    • pp.107-121
    • /
    • 2009
  • The purpose of this study was to examine leadership-related variables of young children. Subjects were 467 fiveyear-olds from the region. Data were subjected to descriptive statistical analysis. Pearson’s correlation, and multiple regression analysis. Results showed that leadership in young children was related to their temperament, peer interaction, verbal control modes of mothers, and home environment. Positive peer interaction was the strongest predictor for leadership of young children.

AGRICULTURAL DROUGHT RISK ASSESSMENT USING REMOTE SENSING AND GEOGRAPHIC INFORMATION SYSTEM

  • Narongrit, Chada;Yeesoonsang, Seesai
    • 대한원격탐사학회:학술대회논문집
    • /
    • 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
    • /
    • pp.991-993
    • /
    • 2003
  • The 4 sets of environmental variables dealing with meteorology, hydrology and physiography were analyzed to generate a spatial drought risk index of Phitsanulok province of Thailand. The analysis of K-mean and discriminant were applied to the set of the selective drought variables for grouping each of spatial variable set into 4 classes. The obtained 4 classes, based on group statistics, were thus recoded in the meaning of no risk, low risk, moderate risk, and high risk. The regression coefficient between recoded classes and a set of the selective environmental variables were then applied as spatial variable weighting on thematic dataset in GIS spatial analysis. The results showed that the weighting score of drought variable was highest in meteorological variable compared to other variables.

  • PDF

패밀리레스토랑 종사원의 스트레스에 영향을 미치는 개인환경적합성 요인에 관한 연구 (The effects of employees' person-environment fit on employees' stress in the family restaurant)

  • 정효선;윤혜현
    • 한국식품조리과학회지
    • /
    • 제29권6호
    • /
    • pp.709-715
    • /
    • 2013
  • The purposes of this study were to consider the influence of person-environment fit in the family restaurants on employees' stress. Based on total 274 samples obtained from empirical research from March 20 to April 10, 2013, self-administrated questionnaires were completed by patrons in metropolitan area and data were analysed by frequency, exploratory factor analysis, reliability analysis, correlation analysis, t-test, one-way ANOVA, and multi-regression analysis. Results of study were as follows: From the exploratory factor analysis of the variables, 4 factors, i.e. person-organization fit(3 variables), person-job fit(3 variables), person-supervisor fit(3 variables), and employees' stress(5 variables) were extracted. The results showed that employees' person-organization fit was significant differences according to gender(male $4.43{\pm}1.45$; female $4.83{\pm}1.34$; p<0.05). In terms of employees' person-supervisor fit was significant differences according to age(20' $3.08{\pm}0.99$, 30' $3.52{\pm}0.10$; 40' $3.71{\pm}1.07$; p<0.05). Also, the person-job fit(${\beta}$=-0.472; p<0.001), and person-supervisor fit(${\beta}$=-0.285; p<0.001) among the person-environment fit had a significant negative effect on employees' stress. Limitations and future research directions are also discussed.