• 제목/요약/키워드: Stratified sampling

검색결과 606건 처리시간 0.026초

시큐리티기업의 시장지향성과 경영성과의 관계 연구 (The study of relationship of Security Service Company's Market Orientation and Business Performance)

  • 박기범
    • 시큐리티연구
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    • 제17호
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    • pp.109-129
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    • 2008
  • 경찰인력의 부족과 사회양극화 현상으로 범죄율이 증가하는 가운데 시큐리티 기업에 대한 사회적 인식과 직업적 가치가 상승하면서 시장의 변화에 요구하는 경영기법이 요구되고 있는 것이 현실이다. 이러한 사실에 비추어볼 때, 그동안 시큐리티 산업의 시장 확대에 따른 시장지향적인 경영 마케팅이 경영성과에 어떻게 영향을 미치는 지, 그리고 그러한 노력의 결과가 어떻게 나타났는지에 대한 연구결과가 전무하여 이에 대한 실증적인 검증의 필요성이 있었다. 따라서 국내 시큐리티 기업의 조직체계를 갖춘 기업을 대상으로 15개 기업을 선정, 시큐리티 종사자들 중 일반직원과 시장지향성에 관련된 내용에 충분한 실무경험을 가진 것으로 판단되는 중간 관리자급을 대상으로 설문조사를 실시하였다. 본 연구는 설문지 작성 및 조사와 통계처리, 가설검증의 양적방법을 활용하였고, 통계분석 도구로서 SPSSWIN 14.0 버전을 사용하여 요인분석, 신뢰도 분석, 상관분석, 다중회귀분석, 회귀분석을 이용하여 경로분석을 실시하였다. 본 연구의 결론은 시장지향성이 시간적 수직적 인과구조를 보이고 있다는 점이다. 시큐리티 기업의 시장지향성은 경영성과를 결정지을 수 있는 매우 중요한 결정적 구성요소라 할 수 있을 것이다. 이는 시큐리티 관련 산업의 발달이 가속화되면서 고객을 향한 서비스와 경쟁회사들간의 마케팅이 곧 잠재시장을 누가 먼저 선점하느냐에 따라 앞으로 시큐리티 기업들의 생존과 발전이 결정 된다 라고 하여도 과언이 아닐 것이다. 이러한 차원에서 지금이라도 시큐리티의 시장지향성에 많은 관심을 두고 고객에 대한 서비스와 경쟁사들과의 차별화 전략을 통해 경영 이익 창출에 많은 관심을 기울여야 할 것으로 생각된다.

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Single Nucleotide Polymorphisms of Cytokine Genes are Associated with Fibrosis of the Intrahepatic Bile Duct Wall in Human Clonorchiasis

  • Chung, Byung-Suk;Lee, Jeong-Keun;Choi, Min-Ho;Park, Myoung-Hee;Choi, Dong-Il;Hong, Sung-Tae
    • Parasites, Hosts and Diseases
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    • 제47권2호
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    • pp.145-151
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    • 2009
  • This study examined the association of cytokine gene polymorph isms with intrahepatic bile duct wall fibrosis in human clonorchiasis. A total of 240 residents in Heilongjiang, China underwent ultrasonography, blood sampling, and stool examination. Single nucleotide polymorphism (SNP) sites for $IFN-{\gamma}$ (+874 T/A), IL-10 (-1,082 G/A, -819 C/T, -592 C/A), $TNF-{\alpha}$ (-308 G/A), and $TGF-{\beta}1$ (codon 10 T/C, codon 25 G/C) genes were observed with the TaqMan allelic discrimination assay. No significant correlation was observed between individual cytokine gene polymorphisms and intrahepatic duct dilatation (IHDD). Among individuals with clonorchiasis of moderate intensity, the incidence of IHDD was high in those with $IFN-{\gamma}$ intermediate-producing genotype, +874AT (80.0%, P=0.177), and in those with $TNF-{\alpha}$ low-producing genotype, -308GG (63.0%, P=0.148). According to the combination of $IFN-{\gamma}$ and $TNF-{\alpha}$ genotypes, the risks for IHDD could be stratified into high (intermediate-producing $IFN-{\gamma}$ and low producing $TNF-{\alpha}$), moderate, and low (low-producing $IFN-{\gamma}$ and high producing $TNF-{\alpha}$) risk groups. The incidence of IHDD was significantly different among these groups (P=0.022): 88.9% (odds ratio, OR=24.0) in high, 56.5% (OR=3.9) in moderate, and 25.0% (OR=1) in low risk groups. SNP of $IFN-{\gamma}$ and $TNF-{\alpha}$ genes may contribute to the modulation of fibrosis in the intrahepatic bile duct wall in clonorchiasis patients.

페루 도시 빈민지역 청소년의 비만에 따른 식생활 및 건강요인의 차이 (Differences in Dietary Life and Health related Factors According to Obesity in Poor Urban Peruvian Adolescents)

  • 정혜경;이해영;김진리;남은우
    • 대한지역사회영양학회지
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    • 제23권4호
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    • pp.302-318
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    • 2018
  • Objectives: This study examined the differences in dietary life and health related factors, such as drinking behavior, exercise and leisure activities, mental health, and subjective perception for oneself according to obesity in poor urban Peruvian adolescents. Methods: A total of 1,532 Peruvian adolescents were selected from six schools in poor regions using stratified random sampling. The subjects were classified into two groups based on their BMI: 'normal weight group (NW group=980)' or 'overweight and obese group (OWOB group=293)'. The differences in the general characteristics, dietary life, drinking behavior, physical activity and leisure, mental health and subjective perception of oneself in the two groups were compared. ${\chi}^2$ analysis and independent sample t-test were performed using the SPSS program ver. 24. Results: For the total and male students, the frequency of breakfast and dinner were significantly lower in the OWOB group than in the NW group (all p<0.001). For total and female students, the percentage of subjects who received nutrition education was significantly higher in the OWOB group than in the NW group (all p<0.05). For total students, the percentage of subject who exercised more than five days/week was lower in the OWOB group than in the NW group (p<0.05). For the total and female students, the subjective health status was worse in the OWOB group than in the NW group (all p<0.05). The subjective body image was significantly different between the OWOB group and NW group in the total, male and female subjects (all p<0.001). Conclusions: The frequency of meals and exercise, and the subjective perceptions of the health status and body image differed according to obesity in poor urban Peruvian adolescents. Therefore, a school-based intervention program focused on regular meal and exercise, and adequate subjective perceptions for health status and body image need to be developed to prevent adolescent obesity.

사망자의 생애말기 진료비의 양상 - 건강보험자료를 이용한 접근 - (The cost of end-of-life care in South Korea)

  • 신현철;최미영;최병호
    • 보건행정학회지
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    • 제22권1호
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    • pp.29-48
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    • 2012
  • The purpose of this study is to analyze medical expenses by decedents in their last year of life and compare them with those by survivors during the year 2008. This study is conducted firstly in Korea, except some studies focusing on medical cost of decedents from specific diseases. To study this, national health insurance(NHI) claims data was used with medicaid claims data. The study group(decedents) was selected from the insurance entitlement file who were dropped out from January to December of 2008. The control group(survivors) was selected from the entitlement file by stratified sampling with keeping age-sex composition of the study group. The medical expenses of decedents during one year before death were measured and compared with those of survivors by sex and age. And the medical expenses were analyzed by causes of death, and also the expenses were examined by each item of medical services. On average, the medical expense amounted to 11 million Korean Won per decedent during their last year of life in 2008. The medical expense per decedent was 9.3 higher than that of survivor. The death-related expense of under the age 35 was about 16 million Won, compared with 4 million Won in the case of over the age 95, in average. The death-related expense is higher in younger ages. This means that more medical resources are put in to save life in younger ages. Total death-related expenditure took 8.3 percent in total NHI expenditures. Of the death-related medical expenses, the largest one was injection-related cost which shares twenty five percent, and the second largest one was hospitalization charges, and then the third one was surgery cost. The results of this study suggested that we should pay attention to the medical expenses in the last of year of life when we study health care expenditure in Korea. In addition, we have to deliberate health care policy to cope with medical expenditures before death in more efficient way.

EQ-5D를 이용한 일개 광역시 성인의 건강관련 삶의 질 측정 (Measuring Health Related Quality of Life of General Adult Population in One Metropolitan City using EQ-5D)

  • 조민우;이상일;길선령;이지호;강위창;손혜숙;유철인
    • 보건행정학회지
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    • 제18권3호
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    • pp.18-40
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    • 2008
  • Measurements of health related quality of life can be used to compare patients with specific conditions to average individuals in the general population in a similar age and gender group. However there are few data available regarding health related quality of life for the general population of Korea. Therefore, this study was conducted to examine the validity of the Korean version of EQ-5D and to measure the health related quality of life of the general adult population in a metropolitan city. The survey was cross-sectional and employed a stratified and multistage sampling design through 100 examination sites in 5 districts of UIsan. A total of 12,644 individuals from 4,112 households participated in the survey. Of these, we analyzed data from 8,068 adults who were over 19 years old and completed the EQ-5D. To examine the validity of the questionnaire, the differences in 5 dimensions and the $EQ-5D_{index}$ were analyzed with regard to demographic and socioeconomic factors such as sex, age, income, and education. In addition, visual analogue scales (VAS) were used to evaluate the overall health related quality of life issues of the respondents. The level of health related quality of life of the general adult population was then compared with the results from the third Korean National Health and Nutrition Examination Survey and other countries. There were a small number of people with problems related tomobility, self-care, and usual activity. In addition, many people complained ofpain/discomfort and anxiety/depression. The complaint rate in each dimension, VAS, and $EQ-5D_{index}$ indicated relatively better states for males, the younger group, the higher income group, and the higher education group. In addition, the level of health related quality of life of the general population of Ulsan was relatively higher than that of Koreans nationwide as well as the populations of other countries. EQ-SD provided a valid measure of the health-related quality of life of the general adult population. In addition, the results of a survey of Ulsan revealed that the quality of life of its population is better than that of the overall population of Korea and of the populations of other countries.

법정전염병 신고행태 및 관련특성 연구 (A Study on the Physician's Behavior of Notifiable Communicable Diseases Reporting and its Characteristics Related)

  • 이윤현;맹광호
    • 보건행정학회지
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    • 제9권4호
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    • pp.41-64
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    • 1999
  • The major concern for this research is to discuss and to offer some solutions to bring the effectiveness of existing notifiable diseases reporting system over the physicians' attitudes of reporting, the actual condition of performance and the reasons of inertia in notifiable diseases reporting through examining the physicians of medical institutions in nationwide such as pediatrics, internal medicine and family medicine. The actual conditions of notifiable communicable diseases(NCD) reporting was surveyed by mail objectifying an internal medicine, pediatrics and family medicine in nationwide on the basis of stratified random sampling method divided into the classification of medical institutions and areas. As a result of survey. the rate of respondents showed 145 persons from physicians, 105 persons from hospitals. 120 persons from general hospitals, and 51 persons from tertiary hospitals. The total number of respondents were 421 and was rated 59.0 %. The analysis of collected survey went through a descriptive analysis primarily to grasp physicians' attitudes on the notifiable communicable diseases reporting, and then upon the dependent variables. Following are major findings obtained form the data analysis. 1. The results of a descriptive analysis on physicians' attitudes towards reporting NCD were as follows: First, the respondents who didn't know that yellow fever is reporting NCD were 11.0% of clinic, 10.5% of hospital. 5.0% of general hospital. 11.8% of tertiary hospital. and in case of hepatitis B, were 26.9% of clinic, 35.2% of hospital. 35.0% of general hospital. 23.5% of tertiary hospital. Second, The rate of physicians' knowledge on penalties of not reporting the NCD by their medical institution were 35.2% of clinic, 45.7% of hospital. 36.7% of general hospital. 62.7% of tertiary hospital. Third, among the no-reporting physicians in whole, the major reason of not reporting NCD were uncertainty of diagnosis(78.9%), no need to report(46.4%), no adequate actions from PHC(29.1%), no knowledge of the cases being notifiable ones in the order of their frequencies(30.4%), meddling from PHC(29.1%), concerning of patient's privacy(26.3%). 2. To analyze the characteristics related to the physicians' behaviors to report NCD, univariate and multiple logistic regression analyses were applied to the variables related to physician, 4 medical facility, PHC, and reporting system. The result were as follows: First, the result of the univariate analysis on physicians' attitude to report NCD and characteristics related to reporting in odds ratio was in the case of hospital. 3.4 times higher positive responses on physicians' attitude to report NCD came up as compared to the clinic. Second, the result of the univariate analysis on physicians' action of reporting NCD and characteristics related to reporting by the classification of medical institutions showed that the odds ratio of hospital was 2.3 times, the odds ratio of general hospital was 2.0 times, the odds ratio of tertiary was 6.8 times significantly higher than clinic. And the medical institution with significantly higher positive attitudes rate by multiple logistic regression analysis was hospital that rated 2.5 times significantly higher than clinic. Also in the PHC related characteristics of reporting, the rate of action in reporting NCD was significantly higher in medical institution that were endowed with the good condition of reporting. In multiple logistic regression analysis, the medical institution that has a good conditions of reporting showed a significantly higher positive rate on the action of reporting than the others.

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지리산 지역의 생물종 분포모형 구축 및 종풍부도 평가 (Development of Species Distribution Models and Evaluation of Species Richness in Jirisan region)

  • 권혁수;서창완;박종화
    • 대한공간정보학회지
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    • 제20권3호
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    • pp.11-18
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    • 2012
  • 생물다양성에 대한 사회적 관심이 늘어남에 따라 생물다양성 평가, 보호지역 지정, 서식지 관리 및 복원 등 생물자원에 대한 공간적 평가의 필요성이 대두되고 있다. 본 연구는 이러한 야생동물의 서식지에 대한 평가를 위하여 자료의 수집 및 모형화의 기법 연구와 생물종풍부도를 작성하는데 목적이 있다. 종분포모형을 위해 사용된 GAM (Generalized Additive Model)으로 기존의 중첩 분석이나 GLM (Generalized Linear Model)에 비해 환경변수와 반응변수의 관계가 명확하고 이에 따른 해석이 용이하다. 본 연구대상지로는 국립공원, 경관생태보호구역, 수달보호구역으로 지정된 지리산, 백운산, 섬진강을 포함하고 있는 유역을 선정하였다. 대상유역의 토지피복에 따라 층화추출을 통하여 야생동물(포유류와 조류)의 출현/비출현 형태의 현장자료를 수집하였으며, 야생동물의 서식에 영향을 미치는 자연, 사회 경제적 자료를 구축하였다. 각 종에 대한 서식지이용분석과 주요서식인자를 확인한 후, 출현/비출현 모형을 통해 서식지적합성모형을 개발하고, 개별 종에 대한 서식지적합성지도 작성하였다. 서식지 적합성지도를 산술 합산하여 분류군별(포유류, 조류) 종풍부도, 통합종풍부도를 작성하였다. 개별 종 서식지의 주요인자는 서식지선택에 따라 다르게 나타났다. 고라니나 박새와 같은 몇몇 종들은 저지대에 분포하나, 대부분의 포유류나 조류의 잠재서식지는 국립공원 경계구역이나 중산간지역에 많이 분포하였다. 본 연구의 결과는 환경부에서 수행하는 생물다양성의 평가, 보호지역의 지정 등의 기초자료로서 활용될 수 있을 것이다.

주택에서 내장재로 쓰이는 섬유의 절약효과와 소비자의식에 관한 연구 - 커어튼을 중심으로 - (The Effect in Heat Controlling and Perceptions Towards Home Furnishing Fabrics - Focus on Curtains and Draperies -)

  • 윤복자
    • 대한가정학회지
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    • 제20권1호
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    • pp.65-77
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    • 1982
  • The intent of this study was to focus attention on the relationship between curtain fabrics and consumer perceptions towards curtains and draperies. This study consisted of the laboratory test for thermal transmittance of selected fabrics and the exploratory survey for consumer perceptions towards curtains and draperies. The objectives of the laboratory test were to measure fabric's thermal transmittance, thickness, and count which affect to the effect in heat controlling. Selected 23 fabrics were tested at Korean Yarn and Fabrics Testing Inspection Institute. The objectives of the exploratory survey were to determine sociodemographic factors; the stage of family life cycle, the economics status, and homemaker's level of education, and physical factors; the type of houses, the direction of windows, and the type of windows, affect consumer perceptions toward curtains and draperies. Questionaires were administered to 489 homemakers selected by a stratified propotional sampling plan, in Seoul in October, 1981. Data from responses were analyzed by T-test(Analysis of Varience) and Partial Correlation. The major findings are as follows; 1. The results of the laboratory test 1) The fabrics used for draperies had higher effect in heat controlling than the fabrics used for glass curtains. 2) It did not show much differences among the fibers in heat controlling. The thicker fibers, however, had the higher effect in heat controlling among same fibers. 3) The fabrics which had high level of effect I heat controlling were corduroy, flax, rayon, nylon, acetate, thick polyester, and thick polyacrylic. The fabrics which had midium level of affect in heat controlling were velveteen, velvet, and thin polyester. The fabrics which had low level of effect in heat controlling were cotton, silk, and thin polyarcylic. 4) The draperies with lining showed 2∼5 times more effective in heat controlling than the draperies without lining. 2. The results of the exploratory survey Consumer perceptions towards curtains and draperies consisted of functional, financial, and aesthetic perception. 1) Factor affecting functional perception towards curtains and draperies was the stage of family life cycle. Families in the contracting stage considered function of curtains and draperies significantly better than those in others stages. 2) Factors affecting financial perception towards curtains and draperies were the economic status, homemaker's level of education, the direction of windows, and the type of windows. However the correlation between the factors and financial perception was too low to explain the significance of tendency. 3) There was not any factors affecting aesthetic perception towards curtains and draperies.

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초등학교 급식의 영양관리 현황 및 개선 방안 연구 (Strategies to Improve Nutritional Management in Primary School Lunch Program)

  • 임경숙;이태영;김초일;최경숙;이정희;권순주;김미옥
    • 대한영양사협회학술지
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    • 제10권2호
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    • pp.235-245
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    • 2004
  • The Korea School Lunch Program mandates that school meals should safeguard the health and well-being of our children. School meals provide a nutritious diet that contains at least ⅓ of the daily Recommended Dietary Allowances of necessary nutrients at reasonable prices. This study was performed to assess the nutritional management of primary school meals, and to provide basic data for improvement of school meal nutritional guidelines. Three hundred and thirty six dietitians who worked at primary schools were recruited using a stratified sampling method. A survey was done by e-mail with a set of questionnaires about nutritional meal management. During school lunch planning, dietitians referred nutrition standards with priority, followed by students' food preferences and food hygiene. They considered energy as a most important nutrient during primary school lunch planning, followed by protein and calcium. Protein is usually over-served, whereas iron, vitamin A and calcium are usually under-served during primary school meal planning. For first and second grade primary students, grains, meat and vegetable side dishes seemed to be large compared to their eating capacity. Over 92% of school dietitians agreed the needs of food group standards for primary school lunch program. For making a checklist of the school lunch program, energy, protein and calcium were highly recommended, and meat.fish.egg group, vegetable.fruit group and dairy group were also highly recommended by school dietitians. Cooking method was also highly recommended. School dietitians proposed that remodeling of school kitchens and new cooking machine were the most important factors for improving school lunch system. These results suggest that food standards should be established for health-oriented nutritional management of primary school lunch programs. Nutritional checklists could include nutrient-rich foods and food groups, and items about cooking methods.

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교양체육 수업에 참여한 대학생의 웰빙지향행동이 행복감에 미치는 영향 (The Effects of well-being-oriented activities on the Happiness of University Students Attended Physical Education)

  • 서수진
    • 디지털융복합연구
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    • 제16권10호
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    • pp.537-544
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    • 2018
  • 본 연구는 교양체육 수업에 참여한 대학생의 웰빙지향행동이 행복감에 미치는 영향을 규명하는데 연구의 목적이 있으며 2018년 3월 1일부터 6월 30일까지 설문지를 이용하여 C시의 대학생 총 305명을 대상으로 집락무선표집법(stratified clusterrandom sampling)을 이용하여 표본을 추출하였다. 연구문제를 해결하기 위해 SPSS Ver20.0통계 프로그램을 이용하였다. 연구결과, 첫째, 웰빙지향행동 중 친환경 행동, 웰빙식생활, 취미지향, 운동지향에서 여학생이 높은 것으로 나타났으며, 웰빙상품구매, 정신건강에서는 남학생이 높은 것으로 나타났다. 행복감은 외적행복, 자기조절 행복, 내적행복에서 남학생이 높은 것으로 나타났다. 학년별로는 웰빙지향행동에서는 남, 여 차이가 없는 것으로 나타났으며 행복감에서는 외적 행복에서 1학년보다 2학년이 높은 것으로 나타났고 내적 행복에서는 1학년보다 2학년, 3학년이 높은 것으로 나타났다. 교양체육수업 참가횟수에서는 웰빙지향행동에서는 차이가 나타나지 않았으며 행복감에서는 3회 참가한 학생이 높은 것으로 나타났다. 둘째, 교양체육 수업에 참여한 대학생의 웰빙지향행동 중 취미지향, 정신지향, 운동지향은 외적행복에, 정신지향, 운동지향은 자기조절행복에, 웰빙식생활, 취미지향, 정신지향, 운동지향은 내적행복에 정적인 영향을 미치는 것으로 나타났다.