• Title/Summary/Keyword: Pre-post comparative study

Search Result 198, Processing Time 0.044 seconds

The Determinants of Fisheries Firms' Capital Structure : Comparative Analysis of Financing Behavior in Pre and Post the Asian Financial Crisis (수산기업의 자본구조 결정 요인에 대한 실증분석: 외환위기 전후의 자본조달 행태 비교)

  • Nam, Soo-Hyun;Lee, Kwang-Min;Hong, Jae-Bum
    • The Journal of Fisheries Business Administration
    • /
    • v.42 no.2
    • /
    • pp.1-14
    • /
    • 2011
  • We try to find the determinants of fisheries firms' capital structure during the years from 1992 to 2007 in this paper. We also have a comparative analysis of capital raising behavior in pre and post-IMF financial crisis. Regression analysis is used for this empirical study. Dependent variable is leverage ratio and independent variables are firm size, operating risk, proportion of tangible asset, non-debt tax shield effect, sales growth ratio, profitability and dummy variable. We compared the characteristics of fisheries industry with that of manufacturing industy. The determinants of fisheries firms' capital structure and correlation between pre and post-IMF financial crisis are roughly same as the hypothses except a little difference. As a peculiar difference, corrlation between fisheries firms' operating risk and leverage ratio is (+) in the pre-IMF financial crisis, but (-) in the post-IMF financial crisis. Proportion of tangible asset has a (+) correlation with leverage ratio in pre and post-IMF financial crisis, but in case of manufacturing industy, (-) correlation shows in the pre-IMF financial crisis. Because, in the pre-IMF financial crisis, high proportion of tangible asset doesn't play a role of a collateral, but only increase the bankruptcy probability. Non-debt tax shield effect and leverage ratio have (-) correlation in all industry and all period, but only (+) correlation in case of fisheries industry in the pre-IMF financial crisis. Sales growth ratio has no significant relationship with leverage ratio in fisheries industry, and this is not coincide with our hypothsis. We have a limitation of the sample size of fisheries firms and sample period in this study. Further study is required to classify the fisheries industry with in-shore fisheries, deep sea fisheries and cold storage industry.

A Comparative Study of Depression and Stress Related Life Events among Women in the Menopausal Stage (우울증과 생활사건 스트레스에 대한 폐경전${\cdot}$후 비교)

  • Chung, Eun-Soon
    • Journal of Korean Academy of Nursing
    • /
    • v.30 no.4
    • /
    • pp.956-966
    • /
    • 2000
  • The purpose of this study was to examine the comparative between depression and stress related to life events among women in the menopausal stage. Menopausal stages were divided into two groups: Pre and post-menopausal stages. The degree of depression and stress related to life events between pre and post menopausal women were compared to each other. Women, aged between 41 and 59 years, answered self-reported questionnaires which included Zung's depression scale and life events scale modified by Lee (1984). Findings were as follows; 1) The mean score of premenopausal women who experienced depression was 39.66, and for post-menopausal women the score was 41.45. There was no significant differences in depression levels between pre and post menopausal group.s (t=-1.55, p=.122). 2) Menopausal women experienced low levels of stress related to life events. There were no significant differences between pre and post menopausal groups(t=.527, p>.05). Both pre and post menopausal groups were highly concerned about education issues of their children and disharmony between couples. 3) There was a significant relationship between depression and stress related to life events among post-menopausal groups (r=.22, p<.01). Based on the findings of this study, the menopausal depression was associated with stress related to life events, especially among post-menopausal women. Feelings of lost fertility and feminine attributies result in menopausal depression, which is significantly correlated with women's negative perception of their life events. Therefore, nursing intervention needs to develop to help reduce the levels of depression and overcome their negative perception of the menopausal experience. Nurses should develop nursing strategies to help menopausal women to have positive perceptions and enhance quality of life by assisting their adaptability to physiological and psychological changes related to menopause.

  • PDF

Physical Activities Using Korean Dance and Motor Ability in Young Children (한국무용을 활용한 신체활동과 유아의 운동능력)

  • Choi, Ji Yeon;Lee, Julie
    • Korean Journal of Child Studies
    • /
    • v.33 no.6
    • /
    • pp.21-34
    • /
    • 2012
  • This study examined the effects of physical activities using Korean dance upon the motor abilities of young children. The subjects of this study were divided into 2 groups. The first group was an experimental group (boy=12, girl=13) who participated in the Korean dance class and the other group was a comparative group (boy=11, girl=14). Experiments were performed during 18 sessions for 9 weeks. The study findings are as follows. First, physical activities using Korean dance had positive effects upon the development of basic motor abilities in young children. In terms of these basic motor abilities, movement motor ability and whole muscle operation motor ability showed significant differences between the pre-test and post-test stage in the experiment group and between the experimental and comparative groups in the post-test stage. On the other hand, in terms of non-movement motor abilities, there was a significant difference between the pre- and post-test stages for the experimental group, but no significant difference in the post-test stage for the experimental or comparative groups. Second, physical activities using Korean dance had positive effects upon the development of perceptive motor abilities in young children. In other words, in the sub-variables of perceptive motor abilities, there were significant differences between the pre- and post-test stages of the experimental group which experienced physical activities using Korean dance. In conclusion, the study findings showed that physical activities using Korean dance had positive effects upon the increase of both basic motor abilities and perceptive motor abilities in young children. Additionally, the experimental group exhibited more positive effects in the various areas of motor abilities than the comparative group.

A Comparative analysis of the Pre- and Post-Construction Image Analysis of the Nakdong Estuary as Coastal Tourism Resource

  • Yhang Wii-Joo;Cho Yoon-Shik
    • Journal of Environmental Science International
    • /
    • v.14 no.10
    • /
    • pp.905-910
    • /
    • 2005
  • The purpose of this study is the comparative analysis of Susan citizens' images of Eulsook-do as a coastal tourism destination before and after the construction of a road bridge across the Nakdong estuary in order to analyze local people's changes in leisure patterns. Analysis of the images of a pre-construction Eulsook-do that people aged both 40 and less and 50 and more had on five dimensions showed values higher than zero(0) that suggests neutral image, while their images of a post-construction Eulsook-do showed the shrinking size of pentagon on all five dimensions: ET(Entertainment), CA(Culture & Art), EE(Environment & Ecology), RC(Recreation) and LP(Leports) dimensions. Its pre- and post- construction image analysis conducted 20 years after it came to be built finds that the road bridge construction has led to the ecological, environmental disruption of the coast and the lower Nakdong river, having negative influence on the images of Eulsook-so.

The Effects of Science Class using Multiple Intelligence on the Learning Motivation, Academic Achievement and Science Process Skill of Elementary Student - Focused on 'Stratum and Fossil' Unit in 3rd Grade - (다중지능을 활용한 과학수업이 초등학생의 과학학습동기, 학업성취도 및 과학탐구능력에 미치는 효과 - 3학년 '지층과 화석' 단원을 중심으로 -)

  • Kim, Jin-hyeon;Lee, Hyeong-cheol
    • Journal of Korean Elementary Science Education
    • /
    • v.36 no.1
    • /
    • pp.31-42
    • /
    • 2017
  • This study aimed to investigate the effect of science class using multiple intelligence on science learning motivation, academic achievement and science process skill of elementary student. The number of participants were 98, 4 classes of $3^{rd}$ graders in G elementary school in B city. The experimental group, 2 classes including 49 participants, had science classes using multiple intelligence while the comparative group, 2 classes including 49 participants, took ordinary teacher-driven lessons using teacher's guidebook. Pre and post tests were done before and after executing lessons to assess the changing in each group's science learning motivation, academic achievement and science process skill. The results of this study can be summarized as follows: First, the pre and post test results of science learning motivation revealed that the experimental group had higher improvement compared to the comparative group and the difference was meaningful. Second, the post test results of the science academic achievement showed that the experimental group had higher average value compared to the comparative group and the difference was meaningful. Third, the pre and post test results of basic science process skill showed that the experimental group had higher average value compared to the comparative group and the difference was meaningful, especially in inference and prediction elements.

The Effect of Practical Reasoning Instruction in Home Economics on the Critical Thinking - Focusing on Family Relations and Resource Management - (실천적 추론 가정과 수업이 비판적 사고력에 미치는 효과 검증 - 가족관계와 자원관리 단원을 중심으로 -)

  • 변현진;채정현
    • Journal of Korean Home Economics Education Association
    • /
    • v.14 no.3
    • /
    • pp.1-9
    • /
    • 2002
  • The objectives of this study were to measure the effect of Practical Reasoning Instruction in Home Economics : specifically. its effect on developing of critical thinking as well as to evaluate the degree of the critical thinking process. with reference to its sub-factors and the level. The research subjects were consisted of the experimental group of 119 freshman class female students from the “A” High School and the comparative group of 110 freshman class female student from the “C” High School in the city of Chung-Ju. This research was conducted under the pre-post test control group design. administering the Pre-Post testing to both the experimental and the comparative groups. The experimental group was subjected to Practical Reasoning Instruction in Home Economics : whereas the comparative group was taught under the lecture-Instruction in Home Economics The research findings are as follows: 1. Those who studied Home Economics under the Practical reasoning method scored higher on the critical thinking Process than the comparative group students who were taught Home Economics in the lecture-style approach. 2. The experimental group of students. who studied Home Economics under the Practical reasoning method. scored higher than the comparative group in their ability to perceive assumption and to render Judgment among the five sub-factors of their critical thinking processes.

  • PDF

THE EFFECT OF PRE-OPERATIVE MAXILLARY OCCLUSAL PLANE ANGLE TO POST-OPERATIVE SKELETAL STABILITY AFTER TWO-JAW SURGERY (수술 전 상악 교합평면각이 상하악 동시 수술 후 골격 안정성에 미치는 영향)

  • Choi, Youn-Mo;Ryu, Dong-Mok;Oh, Jung-Hwan
    • Maxillofacial Plastic and Reconstructive Surgery
    • /
    • v.29 no.2
    • /
    • pp.141-147
    • /
    • 2007
  • The purpose of this study was to evaluate the effects of maxillary occlusal plane angle to postoperative skeletal stability by comparative analysis after two-jaw surgery of patients with skeletal CIII malocclusion. This study was made with lateral cephalometric radiography of 52 patients with skeletal class III malocclusion that were performed to Le Fort I osteotomy and BSSRO. And 52 patients were divided to Group A(n=30) and B(n=22). Maxillary posterior impaction was not conducted in Group A, which the pre-operative maxillary occlusal plane angle was in a normal range, and for Group B, which the pre-operative maxillary occlusal plane was low, the maxillary posterior impaction was conducted. The results were obtained as follows : 1. The relapse rate of Group A, which the pre-operative maxillary occlusal plane angle was in a normal range, was relatively stable compared to Group B, which the pre-operative maxillary occlusal plane was low. 2. The relapse rate of each measurement of Group B, which had the maxillary occlusal plane altered during the operation, was somewhat high, and of those, the post-operative relapse rate of overjet, overbite, mandibular plane angle appeared to be significantly high in the statistics. The analyzed results above, was thought to be indicating that the pre-operative maxillary occlusal plane angle was closely related to the post-operative skeletal stability, and that obtaining post-operative skeletal stability only through operative normalization of occlusal plane angle may meet limitations.

The Comparion of study Isokinetic Evalution between shoulder muscles Dominant and Non-dominant in the Normal adults (정상성인의 견관절 우성 근력과 비우성 근력 비교 연구 - Cybex II + Isokinetic Dynamometer를 이용한 평가를 기준으로 -)

  • Moon Sung-Gi
    • The Journal of Korean Physical Therapy
    • /
    • v.11 no.1
    • /
    • pp.111-119
    • /
    • 1999
  • The object of study who healthufl thirty persons have been enforced Isokinetic exercise of non-dominant muscular strength. The next same that each dominant muscular strength and non-dominant strength, peak torque and total work have been comparative analysis 1, Shoulder muscles comparion increase peak torque at low speed from pretraining Isokinetic exercise of non-dominant strength side to ten week of post-training.. Flexor and extensor come out high and statistically significant 6, 8, 10 week than pretraining. Adductor and abductor come out high and statistically significant 4, 6, 8. 10 week then pre-training, Internal rotator and external rotator come out statistically significant 2, 4, 6, 8, 10 week then pre-ttraining. 2. Shoulder muscles comparion increase peak torque at high speed from pre-training Isokinetic execise of non-dominant strenght side to ten week of post-training. Flexor and extensor come out high and statistically significant 4, 6, 8, 10 week then pie-training. Adductor and abductor come out high and statistically significant 2, 4, 6, 8, 10 week than pre-training. Futernal rotator and external rotator come out statistically significant 4. 6, 8, 10 week than pre-training.

  • PDF

Effects of the individual teaching strategies on mathematics attitude and mathematics achievement of low achievement students in cultural mathematics (개별지도가 대학수학 기초학력 부진 학생들의 수학 학업성취도와 수학 태도에 미치는 영향)

  • Seo, Jong Jin;Jo, Seung Hee
    • Journal of the Korean School Mathematics Society
    • /
    • v.21 no.3
    • /
    • pp.287-301
    • /
    • 2018
  • The purpose of this study was to investigate the effect of individual teaching strategies on mathematics achievement and mathematics attitude of students with low achievement in mathematics. As a result, individual instruction group showed higher mathematics achievement and attitude toward mathematics than comparative group. In the experimental group, there was a correlation between pre-mathematics achievement and post-mathematics achievement. Also, there was a correlation between post-mathematics attitude and post-mathematics achievement. Within the comparison group, there was a correlation between pre-mathematics attitude and post-mathematics attitude. Also, there was a correlation between post-mathematics attitude and post-mathematics achievement.

The Impact of Topic Distribution on Review Sentiment: A Comparative Study between South Korea and the U.S.

  • Cho, Mina;Hwang, Dugmee;Jeon, Seongmin
    • 한국벤처창업학회:학술대회논문집
    • /
    • 2022.04a
    • /
    • pp.123-126
    • /
    • 2022
  • Online reviews offer valuable information to businesses by reflecting consumer experiences about their products and services. Two important aspects of online reviews are first, the topics consumers choose to address and second, the sentiments expressed in their reviews. Building upon previous literature that shows online reviews are context-dependent, we examine the impact of topic distribution on review sentiment in South Korea and the U.S. during pre-and post-pandemic periods. After performing topic modeling on Airbnb app review data, we measure the contribution of each topic on review sentiment using SHAP values. Our results indicate variations in topic distribution trends between 2018 and 2021. Also, the order and magnitude of topics' impact on review sentiment change between pre-and post-pandemic periods for both countries. This study can help businesses to understand how topics and sentiments associated with their products and services changed after pandemic, and also help them identify areas of improvement.

  • PDF