• Title/Summary/Keyword: modified t-test

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A Study on Relationship between Health Locus of Control and Health Promoting Behavior of College Women (여대생의 건강통제위와 건강증진행위)

  • Shin, Hye-Sook
    • Women's Health Nursing
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    • v.3 no.2
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    • pp.224-237
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    • 1997
  • The purpose of this study was to identify relationship between Health Locus of Control and Health Promoting Behavior. The subjects of the study were 333 college women at D University in Seoul. The tools used for this study were Health Locus of Control developed Wallston et al(1978) (by modified Lee, 1994), Health Promoting Behavior Scale developed by Walker et al(1987) were modified by researcher. The descriptive-correlational study were analyzed by descriptive statistics, t-test, ANOVA, Pearson Correlation Coefficient, Stepwise Multiple Regression using SPSS/PC+ program. The results were as follows : 1. Hypotheses 1 that higher the score of internal health locus of control, the higher the score of the level of health promoting behavior was supported(r=.4951, p<.001). Hypotheses 2 that the higher the score of chance health locus of control, the lower the score of the level of health promoting behavior was supported(r=-.3383, p<.001). 2. By means of multiple regression analysis, health locus of control provided explained 24.5% of health promoting behavior. 3. General Characteristic variables significantly related to the health promoting behavior were a major field of study, experience in learning health education.

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Calculating and Measuring the Sinking Performance of Small-scale Purse Seine Gear in Java, Indonesia, to Improve the Gear

  • Widagdo, Aris;Lee, Chun-Woo;Lee, Jihoon
    • Fisheries and Aquatic Sciences
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    • v.18 no.2
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    • pp.221-227
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    • 2015
  • We analyzed the small-scale purse-seine gear that is used along the North Coast of Java, Indonesia, using computer-aided tools to modify the gear. Data from the middle position of the leadline showed that the maximum depth reached by the net was 30 m. A similar result was also calculated. According to the calculated result, the mean sinking speed of the current gear at the middle position of the leadline was 0.13 m/s, and the maximum tension during pursing was 1,794 kgf. The best sinking performance was found in modified gear that used a 30.3 mm mesh knotless polyester net. The maximum depth reached by the net was 38 m, and mean sinking speed was 0.16 m/s at the middle position of the leadline. The maximum tension during pursing was 1,044 kgf. Independent sample t-test results show that the mean sinking depth and sinking speed in the simulated and measured results did not differ (P > 0.05). These results are expected to improve the efficiency and selectivity of small-scale purse seine gear.

A Study of Estimation of Lumbar Intervertebral Disc Size by Colombini's Method (Colombini 방법에 의한 요추부 추간판 크기 추정에 관한 연구)

  • Kim, Jong-Soon
    • The Journal of Korean Physical Therapy
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    • v.19 no.1
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    • pp.23-31
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    • 2007
  • Purpose: As a preliminary study, the purpose of this study was to examine the indirect estimation of the lumbar intervertebral disc size by two anthropometric methods, in order to compare these indirect methods with the direct analysis by radiological imaging. Methods: The wrist, elbow, knee, and ankle joint (both right and left) diameters were measured in 52 volunteers, and then intervertebral disc size was calculated using two anthropometric methods (Colombini and modified Colombini). The data were analysed with independent t-test to assess clinical usefulness. Results: When using right and left joint diameter, there was no significant difference in the estimation value of the L4-5 and L5-S1 intervetebral disc sizes. However, the study has shown that male subjects have significantly larger L4-5 and L5-S1 intervertebral disc sizes, compared with those of female subjects. In addition, disc sizes calculated by Colombini's formula were significantly larger than modified Colombini's formula. Conclusion: The indirect estimation of the intervertebral disc size by anthropometric method can be considered as a clinically useful method. However, further study should be conducted to compare anthropometric values with other radiological imaging.

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A Study on the Fluid Mixing Analysis for the Shell Wall Thinning Mitigation by Design Modification of a Feedwater Heater Impingement Baffle (급수가열기 충격판 설계변경에 따른 동체감육 완화에 관한 유동해석 연구)

  • Kim K. H.;Hwang K. M.;Jin T. E.
    • Journal of the Korea Society for Simulation
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    • v.14 no.2
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    • pp.35-43
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    • 2005
  • Feedwater heaters of many nuclear power plants have recently experienced wall thinning damage, which will increase as operating time progresses. As it is judged that the wall thinning damages have generated due to local fluid behavior around the impingement baffle installed in downstream of the high pressure turbine extraction steam line to avoid colliding directly with the tubes, numerical analyses using PHOENICS code were performed for two models with original clogged impingement baffle and modified multi-hole impingement baffle. To identify the relation between wall thinning and fluid behavior, the local velocity components in x-, y-, and z-directions based on the numerical analysis for the model with the clogged impingement baffle were compared with the wall thickness data by ultrasonic test. From the comparison of the numerical analysis results and the wall thickness data, the local velocity component only in the y-direction, and not in the x- and z-direction, was analogous to the wall thinning configuration. From the result of the numerical analysis for the modified impingement baffle to mitigate the shell wall thinning, it was identified that the shell wall thinning may be controlled by the reduction of the local velocity in the y-direction.

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Effects of Resistance Exercise using Elastic Band on Range of Motion, Function and Shoulder Pain among Patients with Rotator Cuff Repair (탄성밴드를 이용한 저항운동이 회전근개봉합술 환자의 견관절가동범위와 기능 및 통증에 미치는 효과)

  • Sim, Jae Ok
    • Korean Journal of Adult Nursing
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    • v.28 no.5
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    • pp.491-500
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    • 2016
  • Purpose: The purpose of this study was to examine the effect of resistive exercise using an elastic band on range of motion, function and shoulder pain. Methods: Forty two subjects who had rotator cuff surgery were assigned either to a treatment or a comparison group, twenty one each. Following a six week period after surgery those in the treatment group participated in resistant exercise using an elastic band for four weeks. The subjects in the comparison group did not participate in the exercise program. The goniometer measured range of motion, a modified tool measured function, and a self report numerical rating scale measured pain. The data were analyzed using $x^2$ test, Fisher's exact, t-test and the Mann-Whitney Test. Results: Although not statistically significant, there was a trend that more subjects in the treatment group had increased range of motion. There was a statistically significance among the treatment group in terms of increased function (p=.015). Further the treatment group reported less pain that those in the comparison group (p<.001). Conclusion: The findings support that resistance exercise is an effective strategy for patients with rotator cuff repair.

A Study of Job Satisfaction of the Nurses in a University Hospital (일대학 부속병원 간호사의 직무만족도에 관한 연구)

  • Kim, Kwuy-Bun;Sok, So-Hyune R.
    • Journal of East-West Nursing Research
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    • v.12 no.1
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    • pp.14-24
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    • 2006
  • Purpose: This study was conducted to describe and analyze about the degree of job satisfaction of nurses in a university hospital for basic data to develop the professionals and improve productivities, effectiveness in nursing practice. Methods: Design was the descriptive survey study. Sample were 97 nurses in K university hospital, and convenient sampling was used. Measures were job satisfaction of nurse for job satisfaction tool modified by Kim, S.N.(1998) and developed by Slavitt(1978). Data were collected from April 2005 to June 2005, and analyzed using SPSS PC+12 program. Descriptive statistics was used for general characteristics and characteristics related to job. F-test, t-test, and $X^2$ test were used for verification of differences. Results: 1. Scores in categories of job satisfaction were ranked for professional position(3.25), interpersonal relationship(3.19), autonomy(3.08), necessary job(2.88), payment and promotion(2.79), and administration(2.50) in order. 2. There were significant differences in age(F=3.343, p=.040) and satisfaction for current job(F=10.331, p=.000) in differences of job satisfaction by general characteristics and characteristics related to job. Conclusions: On the findings, authors suggest that more opportunities for direct nursing practice, appropriate time for the practice, and the intervention improving satisfaction for current job are needed to improve job satisfaction.

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Evaluation of Age-Hardening Characteristics of Rheo-Cast A356 Alloy by Nano/Micro Hardness Measurement (나노/마이크로 경도 측정에 의한 레오캐스트 A356 합금의 시효경화특성 평가)

  • Cho S. H.;Youn S. W.;Kang C. G.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2005.05a
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    • pp.471-474
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    • 2005
  • This study investigates the nano/microstructure, the aging response, and the mechanical/tribological properties of the eutectic regions in rheoformed A356 alloy-T5 parts using nano/micro-indentation and mechanical scratching, combined with optical microscopy and atomic force microscope (AFM). Most eutectic Si crystals in the A356 alloy showed a modified morphology as fine-fibers. The loading curve for the eutectic region was more irregular than that of the primary Al region due to the presence of various particles of varying strength. The aging responses of the eutectic regions in the rheoformed A356 alloys aged at $150^{\circ}C$ for different times (0, 2, 4, 8, 10, 16, 24, 36, and 72 h) were investigated. Both Victors hardness $(H_v)$ and indentation $(H_{IT})$ test results showed a similar trend of aging curves, and the peak was obtained at the same aging time of 10 h. A remarkable size-dependence of the tests was found.

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A Case Study on Instruction using CS Unplugged v4.1 for Lower Grade Elementary School Students

  • Kim, Ji-Yun;Kim, Eun-Ji;Lee, Tae-Wuk
    • Journal of the Korea Society of Computer and Information
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    • v.24 no.5
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    • pp.187-193
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    • 2019
  • In this paper, we conducted a case study for lower grade elementary school students by modifying and applying lesson plan of CS Unplugged v4.1. Software education was introduced in the 2015 revised national curriculum in Korea, but the starting age is later than the other countries. Also most projects and researches are concentrated in higher grade elementary school students. It is necessary to lower the entry age of software education in order to nurture human resources leading the fourth industrial revolution era. In this study, we modified the lesson plan of CS Unplugged v4.1 to be suitable for lower grade elementary school students in Korea. The participants were 18 students in the first grade of elementary school, pre&post-test on understanding of computer science principles were conducted for examining the effectiveness. As a result, the average was significantly higher in the post-test than in the pre-test, with t=-2.222, p=0.040(p < .05).

Detecting Peripheral Nerves in the Elbow using Three-Dimensional Diffusion-Weighted PSIF Sequences: a Feasibility Pilot Study

  • Na, Domin;Ryu, Jaeil;Hong, Suk-Joo;Hong, Sun Hwa;Yoon, Min A;Ahn, Kyung-Sik;Kang, Chang Ho;Kim, Baek Hyun
    • Investigative Magnetic Resonance Imaging
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    • v.20 no.2
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    • pp.81-87
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    • 2016
  • Purpose: To analyze the feasibility of three-dimensional (3D) diffusion-weighted (DW) PSIF (reversed FISP [fast imaging with steady-state free precession]) sequence in order to evaluate peripheral nerves in the elbow. Materials and Methods: Ten normal, asymptomatic volunteers were enrolled (6 men, 4 women, mean age 27.9 years). The following sequences of magnetic resonance images (MRI) of the elbow were obtained using a 3.0-T machine: 3D DW PSIF, 3D T2 SPACE (sampling perfection with application optimized contrasts using different flip angle evolution) with SPAIR (spectral adiabatic inversion recovery) and 2D T2 TSE (turbo spin echo) with modified Dixon (m-Dixon) sequence. Two observers used a 5-point grading system to analyze the image quality of the ulnar, median, and radial nerves. The signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) of each nerve were measured. We compared 3D DW PSIF images with other sequences using the Wilcoxon-signed rank test and Friedman test. Inter-observer agreement was measured using intraclass correlation coefficient (ICC) analysis. Results: The mean 5-point scores of radial, median, and ulnar nerves in 3D DW PSIF (3.9/4.2/4.5, respectively) were higher than those in 3D T2 SPACE SPAIR (1.9/2.8/2.8) and 2D T2 TSE m-Dixon (1.7/2.8/2.9) sequences (P < 0.05). The mean SNR in 3D DW PSIF was lower than 3D T2 SPACE SPAIR, but there was no difference between 3D DW PSIF and 2D T2 TSE m-Dixon in all of the three nerves. The mean CNR in 3D DW PSIF was lower than 3D T2 SPACE SPAIR and 2D T2 TSE m-Dixon in the median and ulnar nerves, but no difference among the three sequences in the radial nerve. Conclusion: The three-dimensional DW PSIF sequence may be feasible to evaluate the peripheral nerves around the elbow in MR imaging. However, further optimization of the image quality (SNR, CNR) is required.

The Effect of a Education regarding Women's Breast Self-Examination Teaching Methods (성인 여성의 유방 자가 검진 교육 방법에 따른 교육의 효과)

  • Kang Hee-Young
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.3 no.1
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    • pp.81-95
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    • 1996
  • The purpose of this study was to investigate the effects of breast self-examination teaching methods which are printed material, videotape, demonstration used BSE model on women. The subjects for this study were non-medical professional 88 women in Kwangju. The data was collected from October 16 to November 24, 1995 by means of a structured questionnaire. For measuring BSE knowledge, Kim's(1994) instrument was used ard modified by researcher. For measuring BSE attitude based on health belief, Lee's(1982) & Kim's(1994) instrument was used and modified by researcher. Printed material from literature were reviewed by researcher, 'A woman's guide to breast self-examination' videotape by Nurse Practitioner Creation and BSE simulator by Narco were used 21 attitude scale and 13 knowledge scale were checked before and after teaching methods. The data was analyzed by frequency, paired t-test, ANOVA using the SAS program. The results were as follows : 1. The BSE total knowledge score after having teaching was higher than before, different significantly(t=-14.05, p=0.000). The most effective teaching method on BSE knowledge change was demonstration used BSE model in three teaching methods and was different significantly(F=8.44, p=0.000). 2. The BSE total attitude score after having teaching was changed to more positively, different significantly(t=4.59, p=0.000). The most effective teaching method on positive BSE attitude change was demonstration used BSE model in three teaching methods and was different significantly(F=3.21, p=0.045). 3. The HB score after having teaching was higher than before, and benefits, barriers and health concerns were different significantly(t=-2.51, p=0.014 ; t=-4.53, p=0.000 ; t=-3.71, p=0.000). Susceptibility and seriousness were not different significantly. 4. There were different significantly among knowledge, religion(F=3.92, p=0.013) and child (F=3.08, p=0.08). There were different significantly among attitude, age(F=4.65, p=0.05), mansturation state(F=4.39, p=0.016), and artificial abortion experience(F=5.18, p=0.026). There were different significantly among health concern, age(F=2.50, p=0.068), delivary experience(F=3.22, p=0.076), artificial abortion experience(F=5.46, p=0.023), and feeding(F=6.24, p=0.003). Printed material, videotape, and demonstration used BSE model may be valuable for changing positively knowledge and attitude related to BSE. Demonstration used BSE model was most effective teaching method in this study. Therefore, this study revealed that BSE teaching methods were a useful nursing intervention for promoting practice regularily and exactly on women.

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