• Title/Summary/Keyword: Independent sample t-test

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A Study on knowledge, perception, self-efficacy, and performance on radiation protection among perioperative workers in terms of radiation protection (수술실 종사자의 방사선 노출에 대한 방사선 방어관련 지식, 인식도, 자기효능감 및 수행도에 관한 연구)

  • Kim, Bong-Hee;Kim, Hyo-Jin
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.5
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    • pp.343-354
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    • 2017
  • This study was designed to identify the knowledge, perception, self-efficacy, and performance on radiation protection among perioperative workers in terms of radiation protection. The factors affecting the performance of radiation protection were identified, and provide basic data for the development of an effective radiation protection education program. The sample was comprised of 166 perioperative workers who agreed to participate in this descriptive study. Data analysis was performed using the t-test, analysis of variance, Pearson's correlation, and multiple regression analyses on the SPSS 23.0 Program. The average time of radiation exposure was 3-4hoursThe radiation protection education experience was 11.4%. The average score of radiation protection knowledge was $8.61{\pm}2.51$; the perception was $4.59{\pm}0.64$; and the performance was $2.99{\pm}0.90$ There was a significant difference in the degree of radiation defense knowledge and performance among the general characteristics (p <001). Knowledge of radiation protection was correlated with the perception. The performance of radiation protection was correlated with the knowledge. The knowledge and perception of radiation protection behaviors should be increased to improve radiation protection performance. Therefore, it is important to promote the performance of radiation protection behaviors by improving the perioperative workers' knowledge of radiation protection through reinforcing radiation-related education.

A Study on the Discriminating Factors of Adolescents' Gambling Addiction: Focusing on Irrational Belief of Gambling, Impulsiveness, and Smartphone Addiction (청소년 도박중독 판별요인 분석 : 비합리적 도박신념, 충동성, 스마트폰 중독을 중심으로)

  • Kim, Sung-Bong;Jang, Jung-Im
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.8
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    • pp.630-636
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    • 2016
  • The main purpose of this study was to verify if irrational belief of gambling, impulsiveness, and smartphone addiction could discriminate adolescents' gambling addiction (addiction risk group, non-addicted group). To this end, a survey was performed targeting 1,420 middle and high school students living in Jeju. In order to examine the differences between irrational belief of gambling, impulsiveness, and smartphone addiction according to gambling addiction, independent sample t-test was conducted, and to determine if irrational belief of gambling, impulsiveness, and smartphone addiction could discriminate gambling addiction, discriminant analysis was conducted. As a result, first, there were significant differences between irrational belief of gambling, impulsiveness, and smartphone addiction according to adolescents' gambling addiction, and all the variables were significantly higher in the addiction risk group than in the non-addicted group. Second, irrational belief of gambling, impulsiveness, and smartphone addiction were important explanatory variables to discriminate between the addiction risk group and the non-addicted group. In addition, as a result of examining the relative importance of the variables, irrational belief of gambling was the most important, followed by impulsiveness and smartphone addiction. Third, a discriminant function consisting of irrational belief of gambling, impulsiveness, and smartphone addiction showed a 62.5% hit ratio. This study specified the determinant factors of gambling addiction, and has presented meaningful basic data for developing programs to prevent adolescents' gambling addiction in the future.

Level of fear on scaling according to preventive treatment experiences in the adults (성인의 예방처치경험에 따른 스케일링 공포도)

  • Kim, Soo-Kyung;Koo, Ji-Hye;Kim, Ye-Jin;Park, Yoo-Jin;Yoon, Hee-Gyeong;Lee, Da-Jung;Jeung, Eun-A;Jung, Eun-Seo
    • Journal of Korean society of Dental Hygiene
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    • v.17 no.3
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    • pp.369-380
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    • 2017
  • Objectives: The purpose of this study is to investigate the effect of preventive treatment experience on scaling fear level. Methods: A total of 259 adults who had visited the dental clinic were analyzed. The results were summarized as follows. Statistical analysis of the collected data was performed using the SPSS WIN 20.0 statistical program. The general characteristics, scaling experience, and the characteristics of the subjects were analyzed. Frequency of scaling according to general characteristics was analyzed by independent sample t-test, Scaling fears according to treatment experience were tested by t-test. Correlation analysis was performed for scaling fears according to the reliability of dental hygienist. Regression analysis was carried out to investigate factors affecting scaling fear. Results: Level of fear during scaling was higher in females (3.03) than in males (2.54) and that after scaling was scored higher in females (2.68) than in males (2.34) by general characteristics (p<0.001). The adults who were not healthy in oral health showed the highest levels of fear during (3.29) and after (3.00) scaling by oral health status (p<0.001). Adults who had brushing education experience showed lower fear level than those who did not after scaling (p<0.01) according to the experiences of preventive treatments. With respect to the correlation of trust level to the dental hygienists with the scaling fears, it showed higher in the trust level (-0.688) as lower level of scaling fear (-0.642) in the scaling (p<0.01). Confidence level of dental hygienist (-0.661), brushing education experience (-0.121), and oral health status (-0.121) were influenced upon the regression analysis. Conclusions: Oral health education and dental hygiene education are increasing. It is thought that active efforts are needed to promote and maintain oral health.

A Validation Study of the Creative School Environment Perceptions Scale and A Study of Group Differences (창의적 학교환경에 대한 인식 척도의 타당성 검증 및 집단 차이 연구)

  • Jo, Son-Mi
    • Journal of Gifted/Talented Education
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    • v.22 no.3
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    • pp.663-677
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    • 2012
  • The purpose of the study was to verify validity of Creative School Environment Perceptions (CSEP) scale developed based on the scale developed in 2010 by Mayfield and Mayfield. Factor analysis was used to assess construct validity. Another purpose of the study was to investigate factors related to students' perception of creative school environment through use of the group differences. The research participants were 203 elementary school students and all of them were 5th and 6th grade students. Factor analysis indicated that CSEP scale consist of three factors: creativity support, work characteristics, and creativity blocks. In addition the correlation between CSEP scale and the previous scale were investigated to verify the validity of CSEP scale. The results showed that the convergent validity were obtained. Independent-sample t test was performed to test for specific loci of significant between group differences in gender, grade, and the level of ideational behavior. The finding showed that 6th grade students said that their environment hinder creativity. Students with the high level of ideational behavior perceived their school environment was supportive while students with the low level of ideational behavior perceived their school environment was obstructive. Therefore teachers should understand students' perception of creative school environment using CSEP scale and should change students' perception of creative school environment through considering grade and the level of ideational behavior.

The Effects of Cervi Pantotrichum Cornu Pharmacopuncture and Bovis calculus.Fel Ursi Pharmacopuncture on the Heart Rate Variability (녹용약침과 웅담.우황(BU)약침이 정상인의 심박변이도(HRV)에 미치는 영향)

  • Lee, Hwi-Yong;Lee, Jin-Bok;Cho, Yi-Hyun;Song, Beom-Yong;Yook, Tae-Han
    • Journal of Acupuncture Research
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    • v.27 no.1
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    • pp.65-74
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    • 2010
  • Objectives : This study was to investigate the effects of Cervi Pantotrichum Cornu Pharmacopuncture and Bovis calculus Fel Ursi Pharmacopuncture on autonomic nervous system with Heart Rate Variability(HRV). Purpose of the trial was to observe what influence Cervi Pantotrichum Cornu Pharmacopuncture and Bovis calculus Fel Ursi pharmacopuncture have on the autonomic nervous system. Methods : 40 healthy male volunteers were divided into two experimental groups, such as Cervi Pantotrichum Cornu Pharmacopuncture group and Bovis calculus Fel Ursi Pharmacopuncture group. Study design was a randomized, double-blind clinical trial. 20 subjects in one experimental group were injected Cervi Pantotrichum Cornu Pharmacopuncture, 20 subjects in other experimental group were injected hydrolyzed Bovis calculus Fel Ursi Pharmacopuncture at GB21(Kyonjong). We measured HRV 7 times : baseline measurement and every 5 minutes for 30 minutes after injection. The SPSS 15.0 for Windows was used to analyze the data by the paired t-test(in group) and independent sample t-test(between the groups). Results A. Time Domain Analysis 1. Analysis of Mean HRV, SDNN and Complexity After injection of Cervi Pantotrichum Cornu Pharmacopuncture, Mean HRV was significantly decreased all the times after injection. SDNN was significantly increased at immediate and 25 minute after injection. Complexity was significantly decreased only at 15 minute after injection. After injection of Bovis calculus Fel Ursi Pharmacopuncture, Mean HRV was significantly decreased all the times after injection. Complexity was significantly decreased at 15 minutes after injection. 2. Analysis of HRV index, pNN50 After injection of Cervi Pantotrichum Cornu Pharmacopuncture, HRV index was significantly increased immediately after injection. pNN50 was significantly decreased at immediately, 20 and 25 minutes after injection. After injection of Bovis calculus Fel Ursi Pharmacopuncture, HRV index was significantly increased immediately after injection. pNN50 was significantly decreased at immediate and 25 minutes after injection. B. Frequency Domain Analysis 1. Analysis of Ln(TP), Ln(HF), Ln(LF), Ln(VLF) After injection of Cervi Pantotrichum Cornu Pharmacopuncture, Ln(TP) was significantly increased at immediate and 25 after injection. Ln(HF) was significantly increased all the times after injection. Ln(LF) was significantly increased at 15, 20 and 25 minutes after injection. Ln(VLF) was significantly increased at immediate and 25 minutes after injection. After injection of Bovis calculus Fel Ursi Pharmacopuncture, Ln(TP) was significantly increased at immediately and 25 after injection. Ln(LF) was significantly increased at 20 and 25 minutes after injection. Ln(VLF) was significantly increased at immediate and 25 minutes after injection. Conclusions : We results suggest that Cervi Pantotrichum Cornu Pharmacopuncture and Bovis calculus Fel Ursi Pharmacopuncture in healthy adult men tend to activate the autonomic nervous system and sympathetic nervous system within normal range.

An Analysis of Perceptual Differences between Shippers and Operators for Service Quality of Frozen and Refrigerated Warehouses (냉동·냉장창고 서비스품질 향상을 위한 화주사 및 운영사의 인식차이 분석에 관한 연구)

  • Kim, Gwan-Ha;Lee, Hae-Chan;Yang, Tae-Hyeon;Park, Sung-Hoon;Yeo, Gi-Tae
    • Journal of Digital Convergence
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    • v.18 no.4
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    • pp.55-65
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    • 2020
  • The factors for service quality improvement of frozen and refrigerated warehouses are derived and the differences in perception about service quality improvement between shippers and operators of frozen and refrigerated cargos are analyzed. The objective of this study is to propose quality improvement measures for frozen and refrigerated cargo services using the importance-performance analysis (IPA). As a result, 15 analysis factors were derived. It was found through independent sample t-test that there is no difference in perception about quality improvement between shippers and operators. Furthermore, four top priority investment areas were derived from the IPA: maintaining temperature and humidity, securing variable storage space, on-time stocking and releasing, and providing information service. Meanwhile, inventory management service ability, on-time stocking and releasing, and reliable cargo storage ability needed urgent improvement. This study has industrial implications in that it proposes practical improvement measures for service quality improvement.

Influence on Enlisted Soldiers' Health behavior, Body-shape perception, and Weight control toward the BMI change (현역병의 건강행태, 주관적 체형인식, 체중조절 활동이 BMI 변화에 미치는 영향)

  • Lee, Hyun-Ju
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.5
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    • pp.3353-3360
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    • 2015
  • This study was conducted to identify the BMI of enlisted soldiers, to understand the difference between their BMI and that of other men in their age group, and to identify the influence factors of enlisted soldiers' BMI change. The survey has been conducted self-evaluation questionnaire from 23 Feb. 2009 to 31 Mar. 2009 from 4 different forces as methods. Independent-sample T-test, chi-square test and multiple linear regression analysis were used for statistical analysis from 301 collected data. As a result of surveying enlisted soldiers' BMI, their obesity rate 18.6% was lower than 22.1% of other men in their age group. In terms of health behavior, the underweight&normal weight group(2.39) showed higher diet score than the overweight group(2.13), showing that the underweight&normal weight group ate relatively slowly, less spicy and less sweet food compared to the overweight group. The overweight group(2.25) showed lower satisfaction with their body type than the underweight&normal weight group(2.98), while the overweight group(4.01) showed a significantly higher score than the underweight&normal weight group(3.37) for weight control activity. The influence factors of BMI change were diet habit, subjective perception of body type, and weight control activity. In order to improve of enlisted soldiers' BMI, it would be necessary to improve the food service and the snack bars for interventional control of food that influence obesity, rather than personal effort, in addition, education for right body-shape perception and encouraging on weight control activity.

A Study on the Effect of Collective Art Treatment based on Reminiscence Therapy on the Depression, Interpersonal, Relationships, and the Subjective Sense of Happiness among the Elderly with Dementia (회상요법을 활용한 집단미술치료가 치매노인의 우울, 대인관계, 주관적 행복감에 미치는 영향)

  • Kim, Gyoung-Hwa
    • Industry Promotion Research
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    • v.6 no.4
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    • pp.47-58
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    • 2021
  • The purpose of this study is to analyze the effect of reminiscence-based collective art therapy on the depression, interpersonal relationships, and the subjective sense of happiness among the elderly with dementia. The study was conducted on 30 volunteers with dementia aged 65 or older attending the S Weekly Care Center located in S-gun as subjects during the period between November 7, 2020 and January 2, 2021 with one session week for a total of 12 sessions. The SPSS 24.0 statistics program has been used for various data analyses, including confidence verification, cross tabulation analysis, independent sample T-test, 3×2 multi-variant analysis. The study findings are as follows. First, the collective art therapy based on reminiscence therapy is effective in reducing the depression among the elderly with dementia. Second, the collective art therapy based on reminiscence therapy is effective in promoting interpersonal relationships among the elderly with dementia. Third, the collective art therapy based on reminiscence therapy is effective in improving the subjective sense of happiness among the elderly with dementia. Therefore, the reminiscence-based collective art therapy is found to serve as an effective means to relieve depression, improve interpersonal relationships and to promote a subjective sense of happiness among elderly people witn dementia.

Study of Differences in Empathic Ability and Emotional Intelligence according to College Students' Counseling Course-taking Experience and Major (대학생의 상담수강경험과 전공에 따른 공감능력과 감성지능의 차이 연구)

  • Lim, Ae-Ryon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.9
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    • pp.103-110
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    • 2019
  • This study examined whether there are differences in the empathic ability and emotional intelligence by college students' counseling course-taking experience and major. The research subjects were 313 college students, and an independent sample t-test, one-way ANOVA, and Duncan post-hoc test were conducted for hypothesis testing. A difference in empathic ability was observed according to the students' sex, major, and counseling course-taking experience. A difference in emotional intelligence according to their sex and counseling course-taking experience was noted. Empathic ability was higher in females than in males, higher in the school of social sciences than in the school of science and technology, and higher in those who had counseling education than in those who did not. Emotional intelligence was higher in women than in men, and higher in students who had counseling education than in those who did not. Consequently, the effectiveness of counseling education was confirmed. On the other hand, a limitation of theoretical education was found in that there was no difference in emotional intelligence according to the major. Although empathic ability can be improved by education, the current curriculum has not improved it. This study has significance that it emphasizes the need for supplementing the curriculum, like practice or utilizing art media.

Characteristics of Right Hemispheric Damaged Patients in Korean Focused Prosodic Sentences (한국어 초점 발화 시 우반구 손상인의 초점 운율 특성)

  • Lee, Myung Soon;Park, Hyun
    • Therapeutic Science for Rehabilitation
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    • v.8 no.3
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    • pp.69-81
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    • 2019
  • Objective: The purpose of this study was to examine the characteristics of prosody of ambiguous sentences in patients with right hemisphere damage(RHD). Methods: Sentences with each word prosodically focused were used to investigate. Several acoustic parameters such as intensity, F0, and duration were measured to identify characteristics of prosody in patients with lesions in the right hemisphere and normal controls. All speech samples were recorded using the Praat 4.3.14 software. Data were analyzed with the independent sample t-test using SPSS 18.0. Results: The results of this study are as follows: First, intensity of the first syllable of the focus word was different between the two groups in several sentences. Second, F0 was different between the two groups in all sentences. Third, duration was different between the groups in several sentences. Accordingly, prosody were varied and values of acoustic parameters differed due to the focus of utterance. The group with right hemisphere damage showed restricted prosody. Conclusions: Intensity, duration, and F0 are all used as elements of prosody in emphasizing structural and pragmatic meaning, but according to the focus, strength and duration were related to F0. In contrast, F0 has a significant linguistic difference, but there was a significant difference between the RHD and normal people, so F0 can be a discriminatory factor of rhyme evaluation of the right hemisphere damaged and it is necessary to accumulate more strong evidence through future research.