• Title/Summary/Keyword: Influence regularity

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The Factors Influencing Exercise Behaviors of Elderly Living at the Seniors Well-being Villages in Korea (농촌건강장수마을 노인의 운동태도에 영향을 미치는 요인)

  • Park, Gong-Ju;Yoon, Soon-Duck;Kang, Hyun-Jung
    • Journal of Agricultural Extension & Community Development
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    • v.14 no.2
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    • pp.257-278
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    • 2007
  • The purpose of this study is to explore factors influencing them and properties of exercise behaviors among rural elderly in Korea. To implementing it, data were gathered from a total of 356 elderly aged 65 and over living at the Seniors Well-being Villages being developed by the Rural Development Administration in Korea, using the structured questionnaires. also, data were analyzed by the SPSS / windows program. Results show that the exercise behavior of rural elderly was medium level as the average of 3.06 score($1{\sim}5$ score) and 44.2 percent among them didn't exercise regularly and 66.8% didn't participate in sports groups. Second, there were the difference in exercise behavior according to sex and age. Specifically, elderly men exercised more regularly and were aware of proper exercise methods than elderly women. However, there were no difference in exercise behavior according to age. Third, when we analyzed the difference in exercise behavior with the regularity of execution, the elderly who exercise regularly showed higher preference, awareness of necessity, regularity of execution, execution of stretching, participation in sports gatherings and awareness of proper methods than the counterparts. Fourth, we found that unhealthy elderly were more aware of necessity of exercise, exercised regularly, and participated in sports groups frequently than healthy elderly. Also, there was a positive influence of regularity of execution on exercise behavior. These results suggested that regular exercising is very important in health of rural elderly. Therefore, to improve their health, above all, exercise program must be developed

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A High Breakdown and Efficient GM-Estimator in Linear Models

  • Song, Moon-Sup;Park, Changsoon;Nam, Ho-Soo
    • Journal of the Korean Statistical Society
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    • v.25 no.4
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    • pp.471-487
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    • 1996
  • In this paper we propose an efficient scoring type one-step GM-estimator, which has a bounded influence function and a high break-down point. The main point of the estimator is in the weighting scheme of the GM-estimator. The weight function we used depends on both leverage points and residuals So we construct an estimator which does not downweight good leverage points Unider some regularity conditions, we compute the finite-sample breakdown point and prove asymptotic normality Some simulation results are also presented.

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An Efficient Mallows-Type One-Step GM-Estimator in linear Models

  • Song, Moon-Sup;Park, Changsoon;Nam, Ho-Soo
    • Journal of the Korean Statistical Society
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    • v.27 no.3
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    • pp.369-383
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    • 1998
  • This paper deals with a robust regression estimator. We propose an efficient one-step GM-estimator, which has a bounded influence function and a high breakdown point. The main idea of this paper is to use the Mallows-type weights which depend on both the predictor variables and the residuals from a high breakdown initial estimator. The proposed weighting scheme severely downweights the bad leverage points and slightly downweights the good leverage points. Under some regularity conditions, we compute the finite-sample breakdown point and prove the asymptotic normality. Some simulation results and a numerical example are also presented.

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The Dietary Behavior and Food Preference according to Personality Types of High School Students in Gyeongju (경주지역 고등학생의 성격유형에 따른 식생활 태도 및 식품기호도)

  • 유지은;유두련;박금순
    • Journal of the East Asian Society of Dietary Life
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    • v.13 no.5
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    • pp.371-378
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    • 2003
  • The purpose of this study was to investigate the dietary behavior and food preference based on the personality types of the high school students in Gyeongju. According to the survey on the personality types of the students, the type of SP(Sensing-perceiving) occupied the highest ratio, 46% and NF(Intuition-Feeling) 8.6% and NT(Intuition-Thinking) 8.2% and SJ(Sensing-Judging) 7.1%. The difference between the ratio of SP(Sensing-perceiving) and NF was the highest. There was a difference according to the personality types in the effect of knowledge learned in school on the choice of food; the types of NT and NF did not influence on it. The degree of regularity in the amount of every meal showed a significant difference according to the personality types (p<.05); students with NT and SJ types had the regular meals. The factors which could influence on the dietary behavior were parents(60.7%), friends(16.9%) and mass media and books(13.8%), etc. School education had a little influence on the dietary behavior, only 8.0%. Therefore, more practical education was needed. In the food preference, the type of NF preferred the foods with sweet taste while the others with hot taste.

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Research on the longitudinal stress distribution in steel box girder with large cantilever

  • HONG, Yu;LI, ShengYu;WU, Yining;XU, Dailing;PU, QianHui
    • Steel and Composite Structures
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    • v.44 no.5
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    • pp.619-632
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    • 2022
  • There are numerous structural details (Longitudinal beam, web plate, U-ribs and I-ribs) in the top and bottom plates of steel box girders, which have significant influences on the longitudinal stress (normal stress) distribution. Clarifying the influence of these structural details on the normal stress distribution is important. In this paper, the ultra-wide steel box girder with large cantilevers of the Jinhai Bridge in China, which is the widest cable-stayed bridge in the world, has been analyzed. A 1:4.5 scale laboratory model of the steel box girder has been manufactured, and the influence of structural details on the normal stress distribution in the top and bottom plates for four different load cases has been analyzed in detail. Furthermore, a three-dimensional finite element model has been established to further investigate the influence regularity of structural details on the normal stress. The experimental and finite element analysis (FEA) results have shown that different structural details of the top and bottom plates have varying effects on the normal stress distribution. Notably, the U-ribs and I-ribs of the top and bottom plates introduce periodicity to the normal stress distribution. The period of the influence of U-ribs on the normal stress distribution is the sum of the single U-rib width and the U-rib spacing, and that of the influence of I-ribs on the normal stress distribution is equal to the spacing of the I-ribs. Furthermore, the same structural details but located at different positions, will have a different effect on the normal stress distribution.

The Dietary Behavior and Nutrient Intake Status of the Yooth in Rural Areas of Korea (중.고등학생의 식생활행동과 영양섭취 실태와의 관계 연구)

  • 이건순;유영상
    • Korean Journal of Community Nutrition
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    • v.2 no.3
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    • pp.294-304
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    • 1997
  • The purpose of this study was to explore the relationship between dietary behavior and the nutrient intake status in the youth of rural areas, based on their personal characters such as their sex, age, family type, number of family members, mother's age, occupation, and school career. This study was made by use of a self-administrated questionnaire with a 24-hour recall for 5days as an instrument with 439 randomly selected students. Statistical methods applied to analyze the data were frequency, percent, Willcoxon Rank-sum test, Kruskal-wallis test, x2-test by contingence table, and Spearman's correlation coefficient in non parametric statistical cases. Some of the interesting results are as follows : 1) The correlation between sex and breakfast is highly significant. That is, over 80% of male students had breakfast every day, whereas only about 60% of female students had breakfast every day. Bad table manners and some other problems are insignificant with respect to the personal characters in the relations between the personal characters and eating behaviors. However, the regularity of every meal, the frequency of having meals with other family members, and the frequency of meals eaten out and snacks show significant differences. 2) The mother's occupation does not have any influence on the nutrient intake of their students when the relationship between personal characters and nutrient intake was analysed. On the other hand sex, the mother's school career, the numbers of family members, the type of family, and the income of the family showed significant differences nutrient intakes. 3) The regularity and the frequency of having meals, meals eaten out with their family members, and the table manners during meals showed significant differences in the intake of nutrient elements such as calorie, protein, fat, fiber, calcium, iron, phosphorus, vitamin B1, vitamin B2, niacin and vitamin C. However some consideration during meals and problems in eating habit are insignificant with regard to nutrient intake.

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Mother's Parenting Style at Meal Time and Their Preschooler's Dietary Behavior (어머니의 식생활 지도 유형과 자녀의 식생활 실천도에 대한 연구)

  • Park, Soyeon;Lee, Youngmee
    • Korean Journal of Community Nutrition
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    • v.22 no.1
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    • pp.13-21
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    • 2017
  • Objectives: This study was conducted to evaluate the nutrition quotient (NQ) by mother's parenting style which may influence the NQ in preschool children. Methods: Subjects were 310 mothers and their 4-6 year old children. The questionnaire composed of demographic characteristics, mother's parenting style at meal time and eating behavior as measured by NQ questions. The NQ questions consisted of 19 food behavior checklist items and all items were grouped into 5 factors: balance, diversity, moderation, regularity, and practice. Mother's parenting style was classified by using words for nutrition education at meal time. All data were statistically analyzed by SPSS program (Ver. 23) and the statistical differences in variables were evaluated by Student's t-test, ${\chi}^2$-test, One-way ANOVA. Results: We observed that in children whose mothers use the parenting style at meal time of 'explanation' and 'compliment & cheer up' had high dietary regularity, diversity, practice. The children of mothers who use the parenting style at meal time of 'persuasion' and 'reward' were found to have a lower degree of balance, diversity, and practice. Especially, children of 'reward' style mothers had lower moderation of dietary life. On the other hand, among the parenting style at meal time of 'comparison & demand', 'treating' and 'faire', there was no significant difference in the NQ factor by each group. NQ grade was higher among those who used more explanation (p < 0.001) and persuasion (p < 0.01) and with use of less persuasion (p < 0.01) and reward (p < 0.01). The positive association observed between the frequency of dietary education of mothers and higher NQ grade indicated the degree of dietary practices of those children. On the other hand, the children of mothers who rarely practice the dietary education at home had lower NQ grade (p < 0.001). Conclusions: In order to promote children's proper dietary behaviors, it is important to provide nutrition education to children as well as provide guidance on parenting style at meal time.

Adaptive Analysis and Error Estimation in Meshless Method (무요소 방법에서의 적응적 해석을 위한 오차의 평가)

  • 정흥진
    • Computational Structural Engineering
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    • v.11 no.1
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    • pp.261-274
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    • 1998
  • In this paper, local and global error estimates for the element-free Galerkin (EFG) method are proposed. The essence of proposed error estimates is to use the difference between the values of the projected stress and these given directly by the EFG solution. The stress projection can be obtained simply by taking product of shape function based on a different domain of influence with the stresses at nodes. In this study, it was found that the effectivity index is optimized if the domain of influence in stress projection procedure is the smallest that retains regularity of the matrices in EFG. Numerical tests are shown for various 1D and 2D examples illustrating the good effectiveness of the proposed error estimator in the global energy norm and in the local error estimates.

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Analysis of the relationship between e-brand personalities and visual attributes (웹페이지 디자인의 이브랜드 개성 구축을 위한 시각조형특성 분석)

  • Park Su-E
    • Archives of design research
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    • v.19 no.4 s.66
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    • pp.187-204
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    • 2006
  • The brand personality of online products and services is know as its e-brand personality. Although, in the competitive conditions of online markets, e-brand personality is agreed to be an important factor, few studies have suggested how to establish e-brand personality through the visual design of web sites. This study identifies and verifies causal relationships between the visual attributes of web pages and e-brand personalities. The first identifies four major dimensions of e-brand personality on diverse web sites. The second uses 52 experimental home pages to identify key visual attributes associated with those four personality dimensions. The third is a confirmatory study with 16 experimental web sites that verifies causal relationships between visual attributes and e-brand personalities. The results show that two visual attributes, 'simplicity' and 'cohesion,' help to establish a 'bold' personality. Three attributes, 'contrast,' 'density,' and 'regularity,' affect whether a site has an 'analytical' personality. 'Contrast,' 'cohesion,' 'density,' and 'regularity' all influence whether a web site is perceived to have a 'friendly' personality. 'Regularity' and 'balance' were expected to affect the 'sophisticated' personality dimension, but no such impact was observed. The paper concludes with a discussion of implications, limitations, and future research directions.

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Anxiety, Depression, and Self-Esteem in Children with Cancer : The Influence of Personal Variables and Perception of Social Support (암환아의 개인적 변인과 사회적 지지 지각이 불안, 우울 및 자아존중감에 미치는 영향)

  • Cho, You Jin;Kim, Kwang Woong
    • Korean Journal of Child Studies
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    • v.24 no.1
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    • pp.21-32
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    • 2003
  • This study analyzed the influences of personal variables and perception of social support on the anxiety, depression and self-esteem of 102 children with cancer living in Seoul. Data were analyzed by t-test, ANOVA, and hierarchical multiple regression. Results showed that personal variables that influenced depression, anxiety and self-esteem of children with cancer were sex, grade in school, monthly income of the family, and regularity of school attendance. Perception of social support influenced depression and self-esteem; subjects higher in perception of social support were lower in depression and higher in self-esteem.

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