• Title/Summary/Keyword: t-검정(표본분석)

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A Study of Calculating Audit Fee According to the Number of Input Auditors and Audit Input Times: Focusing on the Companies of 100 Billion KRW Assets (회계감사 등급별 투입인원 및 투입시간 산출에 따른 감사보수산정 연구 -자산규모 천억원 기업을 중심으로-)

  • Mun, Tae-Hyoung
    • Management & Information Systems Review
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    • v.35 no.3
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    • pp.231-247
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    • 2016
  • This study, according to the amendment of the Act on External Audit, on the basis of the number of input auditors, the content of auditing, and audit times as additional informations, calculates the average of the samples listed companies with assets of one hundred billion KRW. However, since the actual number of the subject corporations of which asset is 100 billion KRW is small, it is difficult to extract data with reference to this asset size. Therefore, the samples were extended to 50 corporations of which asset is 10% less than 100 billion KRW and other 50 more corporations of which asset is 10% more than 100 billion KRW. As a result, a total of 100 corporations were included as samples. To calculate the average of the audit times, a t-test was performed between the two groups. The result of the t-test showed that there is not a significant difference between the two groups. According to the analytical results of the t-test, the average of the number of input auditors and the average of audit times were calculated with respect to all the 100 samples. A further analysis showed that the average of audit content in the present study was compared with the estimated values in the study of Mun (2016). Although the results of this study may not be the optimal number, they may be used as a fundamental index which may be compared with the audit times and the audit fees in the current audit market where there is not an available reference. In addition, the amendment of the Act on External Audit may enhance the independence of auditors and the transparency of accounting system when compared with the previous system where only the total audit times were disclosed.

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Health-Related Quality of Life (EQ-5D) among Korean Adults with Metabolic Syndrome using Complex Samples Analysis (복합표본분석을 적용한 한국 대사증후군자들의 건강관련 삶의 질(EQ-5D))

  • Lim, Hyeon-Jeong;Kim, Eung-Joon
    • Journal of Korea Entertainment Industry Association
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    • v.13 no.8
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    • pp.357-365
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    • 2019
  • Purposes: This study aimed to investigate the differences in the health-related quality of life (EQ-5D) in Korean adults according to gender, age period, and the metabolic syndrome or not. Methods: The study subjects were 5,021 adults, who completed all of the KNHANES VI-2. The subjects were categorized, using life periods, into young, middle-aged, and older adults. Methods were selected based on the KNHANES VI-2. IBM SPSS 25.0 was used for a complex samples cross-tabulation, general linear model and a complex samples t-test. Results: The HRQoL (EQ-5D) was higher in male(p<.001), in the young group by age(p<.001), and in the non-metabolic syndrome group(p>.05). In condition of the metabolic syndrome by gender, the female group's EQ-5D was higher in the non-metabolic syndrome group; there was the result of the complex samples independent t-test revealed significant differences in EQ-5D(p<.01). Conclusion: The HRQoL (EQ-5D) was higher in male, young, and in the non-metabolic syndrome group. Also, in condition of metabolic syndrome in female, there was the result of the complex samples independent t-test revealed significant differences in EQ-5D.

Convergence Comparative Analysis of Young-Old and Old-Old Patients Hospitalized Owing to Injury (손상으로 입원한 전·후기 노인의 융복합 비교분석)

  • Suhn, Mi-Ohk
    • Journal of the Korea Convergence Society
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    • v.11 no.2
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    • pp.75-83
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    • 2020
  • This study aimed to understand the differences in general characteristics, principal diagnosis, injury-related characteristics, and types of transportation accidents between young-old and old-old patients who were hospitalized owing to injury based on data from the Korean National Hospital Discharge In-Depth Injury Surveys. We used a complex sample cross tabulation analysis (chi-square test) and complex sample generalized linear model (t-test). Therefore, the primary focus of healthcare professionals working with the old-old should prevent falls in the home and increase the available medical care, financial aid plans, and psychosocial support for aging. Additionally education on traffic accident prevention and road safety is particularly important for old-old patients.

Analysis of Differences Between Spinal Stabilization Muscle Strength According to BMI for Industrial Workers (산업체 근로자의 비만도 따른 척추안정화근력 차이 분석)

  • Kang, Kyung-Hwan
    • Journal of Digital Convergence
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    • v.12 no.12
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    • pp.441-447
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    • 2014
  • The purpose of this study was to explore differences of spinal stabilization muscle strength between groups classified by BMI for industrial workers. Fifty subjects participated in this study were divided to obesity group(BMI over $25kg/m^2$) and non obesity group(BMI under $25kg/m^2$). Independent t-test was applied for analysis. The results showed the following. There were significant differences in $0^{\circ}$ Forward on sagittal plane, in both $90^{\circ}$ Left, $90^{\circ}$ Right on coronal plane, in $45^{\circ}$ Left Tilt, $45^{\circ}$ Right Tilt on diagonal plane between groups. Last, There were significant differences in an amount of soft lean muscle and an amount of skeletal muscle between groups. These results shows that spinal stabilization muscle strength program for the obese should be considered in sagittal plane, coronal plane, and diagonal plane.

Effect of Task-Oriented Exercise on the Balance in Degenerative Arthritis Patients with Total Knee Replacement (과제 지향 훈련이 슬관절 전치환술을 시행한 퇴행성 관절염 환자의 균형 능력에 미치는 효과)

  • Ji, Sang-Goo;Kim, Myung-Kwon;Lee, Dong-Geol;Cha, Hyun-Kyu
    • The Journal of the Korea Contents Association
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    • v.12 no.3
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    • pp.222-232
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    • 2012
  • This study was conducted to compare the task-oriented exercise and weight-shifting exercise program has effectiveness on the static and dynamic balance in patients with total knee replacement. The participants were allocated randomly into 2 group : task-oriented exercise group(n=12) and weight-shifting exercise group(n=12). To evaluate the effects of exercise, subjects were evaluated by using Gaitveiw System and functional reaching test for static balance and Balance System for dynamic balance test. The data was analyzed using a paired t-test and independent t-test to determine the statistical significance. Static balance test and dynamic balance test in task-oriented exercise had statistical significance than weight-shifting exercise program(p<0.05). So this results were suggested that the task-oriented exercise was effective on static and dynamic balance in patients with total knee replacement.

The Effect of Chain Exercise Types on the Exercise Performance Improvement in Lower Limb Exercise for the Life-Carement (라이프케어먼트를 위한 신체운동수행능력 향상에 사슬운동형태가 미치는 효과 연구)

  • Yang, Seung-Hoon
    • Journal of Korea Entertainment Industry Association
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    • v.14 no.8
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    • pp.391-396
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    • 2020
  • This study was to examined the effect of chain types exercise of lower limbs on the motor performance differences for the life-carement. For this, twenty normal adult women participated and they were examined the differences of exercise effects about abdominal muscle activity and balance ability by applying two types of chain exercise. In order to identify the differences we let them conduct exercise for 4 weeks with each type of exercise. And we used paired t-test and Independent sample t-test for comparing the differences in the group and inter groups. There was a significant difference in the value of 0.05 to verify statistical significance. As a result of this research, it was found that closed chain exercise is more effective than open chain exercise in muscle activity and balance function. Therefore, in the clinical therapeutic environment, if you apply chain exercise for patient to improve lower limb motor performance, we would recommend the close kinematic chain exercise.

Research on the Importance and Satisfaction of Selection Attribute for Pension using Importance-Performance Analysis(IPA) (IPA를 활용한 관광펜션업 선택속성의 중요도-만족도 연구)

  • Kim, Yeon-Sun;Lee, Sang-Hee
    • The Journal of the Korea Contents Association
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    • v.13 no.3
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    • pp.392-401
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    • 2013
  • This study was conducted to research the Selection Attribute for Pension which is located in the region of S. Gyeonggi-do. We intended to find the best choice point for reserving the pension using IPA and suggest or provide strategic implications and marketing method for running the pension. The survey was conducted from the early January to the end of March in 2012 with one to one method. A total of 300 questionnaires were distributed and 229 responded questionnaires were reliable to be used as a sample. The result of the survey was analyzed by using SPSS 15.0 version for window with Paired t-test and IPA method. Frequency Analysis was also conducted for the characteristic of samples. Findings are presented and discussed in three areas. First, the cleanliness of rooms, service for customer, heating and cooling system are the key important factors for the choice of pensions. Secondly, all factors are statistically significant level(p<0.01, p<0.001) as a results of performing IPA method. Thirdly, the result has shown that the varity of programs in the pension have significant impact on the customers' choice and satisfaction.

Effects of Traffic Islands on Traffic Accidents Reduction (교통섬 설치로 인한 교통사고 감소 효과)

  • Gang, Dong-Su;Lee, Su-Beom;Kim, Yong-Seok;Hong, Ji-Yeon
    • Journal of Korean Society of Transportation
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    • v.28 no.2
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    • pp.21-32
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    • 2010
  • A traffic island, typical channelization facilities, is widely applied to newly road designs and black spots improvement projects as traffic safety measures. However positive effects of a traffic island for traffic safety have not been reported specifically. Accordingly this study analyzed the accidents reduction effectiveness and economics of installing traffic islands under various roadways and traffic conditions. For this purpose normality test, paired t-test and Wilcoxon signed rank test were applied to this study based on traffic accidents, roadways and traffic environments data for 3 years before and after improvement at 54 intersections. The results showed that most of traffic accidents were reduced significantly after installing traffic islands except when traffic islands were installed in outside of cities and farming regions where use efficiency is low, curve sections with poor visibility, poor alignment sections with acceleration/deceleration lanes, road sections where occurs conflicts frequently due to did not install of acceleration/deceleration lanes, and road sections where cross with single lane road.

요인분석에 의한 식품의 안전성이 쌀 구매에 미치는 차별성 검정

  • 이순석;오상헌;조성주;조재규;정호근
    • Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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    • 2003.10a
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    • pp.143.1-143
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    • 2003
  • 본 논문은 브랜드 쌀 구매에 영향을 미치는 요인(factor)들이 소비자 특성에 따라 차이가 있는지를 분석하기 위한 목적으로 수행되었다. 분석을 위하여 서울시에 1,000명의 주부를 대상으로 설문조사를 실시하였으며, 그 주요 내용은 다음과 같다. 먼저 주부들이 쌀 구매에 영향을 미치는 11개 항목을 5점 리커르트 척도를 이용하여 분석하였다. 그 결과 소비자들이 가장 높은 점수를 부여하는 것은 쌀의 잔류 농약 정도로서 4.12점이 나왔으며, 영양가 높은 쌀(4.01점), 쌀알의 모양(3.96점) 및 쌀의 생산지(3.88점) 등의 순위가 높았다. 요인분석을 위해 고유치(eigen value) 값이 0.8 이상인 경우를 기준으로 요인 수를 분석한 결과 다섯가지의 요인이 추출되었으며, 그 특징은 유형적 차원과 무형적 차원으로 구분되었다. 전자인 유형적차원은 물리적 속성(완전미 여부, 도정일자, 잔류농약), 지역성(생산지), 외관성(크기, 모양) 및 가격성등의 가시적 차원으로 소비자가 쉽게 판단하거나 쌀간의 비교가 용이한 특성이며, 후자는 심리적 속성이나 상징성을 의미하는 것으로서 브랜드 상표와 품질 인증 마크가 가지는 신뢰성 등이 영향을 미치는 것으로 분석되었다. 무형적 차원인 식품의 안전성이 도시주부간 쌀 구매에 미치는 차별성을 알아보기 위하여 정규성 검정 결과에 따라 독립표본 T-검정을 실시하였다. 분석에서 도시주부가 특성별로 두 집단으로 구분되는 기준은 자의적 분류보다는 공통적인 기준을 이용하고자 평균값(나이, 학력, 소득, 동거가족 수)을 기준으로, 그 외의 경우는 더미변수(주부직업 유무, 주거형태 및 거주지역)를 이용하여 구분하였다. 식품의 안전성으로 추출된 요인 값의 평균에 대해 두 집단간 차이를 검정하였으며, 분석 결과 주거형태가 1% 유의수준에서, 주부취업 여부 및 거주지역이 각각 5%유의수준에서 통계적 유의성이 있는 것으로 분석되었다. 반면 주부간 나이, 학력, 소득수준 및 동거가족 수에서는 유의미한 결과가 추정되지 못하였다. 본 연구결과를 볼 때, 식품의 안전성을 고려한 쌀의 마케팅 전략은 취업주부, 아파트 거주자 및 강남지역 주부들을 대상으로 한 판매활동 강화가 필요하다. 아울러 통계적으로 유의미한 결과를 나타내는 도시 주부의 특성 변수들을 세밀하게 구분해서 연구·분석하는 시장세분화 연구가 필요하다.

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Effect of Fundamental Nursing Class using Evidence-Based Practice (근거기반실무를 활용한 기본간호학 수업 운영의 효과)

  • Kim, Yun-Hee;Ryu, Seang;Kim, Heeyoung
    • The Journal of the Korea Contents Association
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    • v.18 no.6
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    • pp.38-49
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    • 2018
  • The nursing education with evidence-based practice(EBP) should set a differentiated education strategy according to the level of the learner, so that the students experience it step by step and it leads them to be skilled. The purpose of this study was to integrate and operate the EBP in the fundamental nursing classes of the second grade students and to verify the effectiveness on improvement of EBP basic competency of them. A non-equivalent control group pretest-posttest design was used. The subjects were 108 students in the second year of nursing at the two universities. The experimental group participated in the class for 8 weeks and 24 hours during the 15-weeks, second semester 2016 and the control group participated in general fundamental nursing class. Data were collected proactivity in problem solving, future use of EBP, and critical thinking disposition instrument and analyzed using SPSS/WIN 23.0 program with Chi-square test, independent t-test. The experimental group had a significant increase in proactivity in problem solving and future use of EBP compared to the control group. However, there was no significant difference in critical thinking disposition between the two groups. Findings indicate that the fundamental nursing class used EBP was an effective lesson to improve proactivity in problem solving and future use of EBP, which is the EBP basic competency for the lower grader. Long-term efforts are needed to improve the EBP competence and critical thinking of nursing students by curriculum appropriate to grade-based goals of EBP.