• 한국보건간호학회지
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• 제37권1호
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• pp.111-124
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• 2023

Purpose: This study aimed to investigate the effects of restorative family circles (RFCs) on empowerment and family support for people with mental illness, and the belief system and caring experience of their families. Methods: This study used a quasi-experiment with a non-equivalent control group pretest-posttest non-synchronized design. Ninety-two dyads of patient-family caregivers were recruited using convenience sampling and assigned to the experimental and control groups. The subjects of the experimental group participated in RFCs consisting of eight 90-minute sessions. Data were collected at three different times (pretest, posttest, follow-up test) and analyzed for the effects of RFC using the 𝑥² test, Fisher's exact test, Mann-Whitney U test for homogeneity between groups, and generalized estimating equation models. Results: The findings of this study showed that there were significant differences in the family support for people with mental illness between the pretest and follow-up test, and also in the belief system and caring experience of the family between the pretest and posttest. Conclusion: This study revealed that family interventions based on restorative justice emphasizing community-driven conflict management could be used in psychiatric mental health nursing care for fostering a cohesive family relationship.

• 임상간호연구
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• 제23권3호
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• pp.388-397
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• 2017

Purpose: The purpose of this study was to explore the effects of the lower limb muscle strength exercise program during hemodialysis on the leg strength and falls efficacy (fall-related self-efficacy) of hemodialysis patients. Methods: The study was designed to be a quasi-experimental, nonequivalent control group pre and post test design. A total of 42 patients participated in the study. We applied lower limb muscle strength exercise program to the experimental group in every hemodialysis three times a week for 8 weeks. Data were analyzed using ${\chi}^2$ test, fisher's exact test, t-test and repeated measures ANOVA. Results: The mean age was 58 years old (t=-1.54, p=.132), the mean hemodialysis period was 67 months (t=1.949, p=.058) and there was no significant difference of dependent variable (t=1.17, p=.251)(t=-.89, p=.381) between the two groups before the experiment. After the experiment, leg strength was significantly improved in the experimental group compared to that of the control group (F=6.63, p=.004). However, falls efficacy was not significantly different between the experimental group and the control group (F=2.33, p=.104). Conclusion: The study results indicated that the lower limb muscle strength exercise program during hemodialysis may improve leg strength and potentially to prevent falls for hemodialysis patients. Further studies are warranted in which larger number of participants and longer duration of intervention are recommended.

• Asian Pacific Journal of Cancer Prevention
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• 제17권3호
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• pp.1111-1114
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• 2016

Opisthorchiasis is a major problem in Thailand particularly in northeast region which also has a high incidence of cholangiocarcinomas. Since health modification is needed, this quasi-experimental study aimed to assess the effectiveness of a health education program based on self-efficacy and social support in Tha Tum district, Surin province, Thailand. A total of 70 participants were purposive selected with a history of opisthorchiasis. Participants were divided into experimental and control groups, each with 35 subjects. The experimental group received a health education program composed of: (1) knowledge improvement, lectured with multimedia, demonstration, brochure, and handbook; (2) group discussion about their health beliefs, sharing their ideas and experience; and (3) social support from village health volunteers (VHV), heads of villages (HV), friends, and members of families, and public health officer (PHO). Follow-up was by PHO/VHV/HV, with provision of certificates and flasg for household that did not eat raw fish. Data were collected by predesigned questionnaires after implementation of the program for 3 months. Comparative data was analyzed by paired simple t-test and independent t-test. The results revealed that the experimental group had mean score of knowledge higher more than before the experiment (mean difference=3.1, t=3.915, 95%CI-3.3, -1.8 p-value=0.001), and the control group (mean difference=2.5, t=4.196, 95%CI=1.4, 3.6, p-value=0.001) with statistical significance. The mean scores of practice were higher than before the experiment (mean difference=4.6, t=4.331, 95%CI-5.3, -3.1, p-value=0.001), and control group (mean difference=4.4, t=6.142, 95%CI=4.2, 7.9, p-value=0.001). The mean scores of perceived susceptibility and perceived severity of opisthorchiasis, al well as perceived benefits and perceived barriers to prevention of opisthorchiasis, were also higher than before the experiment and in the control group (p-value <0.001). In conclusion, this was a successful health education program for liver fluke avoidance. Therefore, it may useful for further behavior modification in the other epidemic areas.

• 한국산학기술학회논문지
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• 제17권3호
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• pp.93-102
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• 2016

본 연구는 MRI 검사 시 음악요법을 동반한 의사소통이 환자의 불안에 미치는 효과를 파악하기 위한 비동등성 대조군 전후 실험연구이다. 연구기간은 2014년 2월 1일부터 2014년 3월 31일이며, 대구광역시에 소재한 C병원에서 MRI 검사를 시행 받은 환자 중 연구에 동의한 60명을 대상으로 분석하였으며, 실험군이 30명, 대조군이 30명이었다. 실험군에게는 MRI 검사 도중 음악요법을 동반은 의사소통을 제공하였고, 대조군에게는 제공하지 않았다. 수집된 자료는 기술통계를 산술하고, 비교검증을 위해 t-test와 ANCOVA를 실시하였다. 연구결과, 음악요법을 동반한 의사소통을 제공받은 실험군과 제공받지 않은 대조군 간의 불안점수는 실험군에서 유의하게 낮았고(p=.001), 활력징후 중에서는 수축기혈압과 이완기혈압 모두 실험군과 대조군 간에 유의한 차이를 보이지 않았으나, 심박수가 실험군에서 유의하게 낮았다(p=.001). 신체적 불편감은 발한, 안면변화, 자세변화, 성음변화 등 4가지 항목 모두 실험군과 대조군 간에 유의한 차이가 없었으며, 정서적 불편감은 어지러움을 제외한 공포감(p=.001)과 긴장감(p=.001)에서 실험군이 유의하게 낮았다, 이상의 연구결과로 볼 때 음악요법을 동반한 의사소통은 MIR검사 시 환자의 불안 감소 및 활력징후 유지, 불편감 감소에 유용한 대체요법이 될 것으로 생각된다.

• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 2002년도 Proceedings
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• pp.418-421
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• 2002

Fundamental study on quasi-monochromatic parallel radiography using a polycapillary plate and a plane-focus x-ray tube is described. The x-ray generator consists of a negative high-voltage power supply, a filament (hot cathode) power supply, and an x-ray tube. The negative high-voltage is applied to the cathode electrode, and the transmission type target (anode) is connected to the ground potential. The maximum voltage and current of the power supply were -100 kV (peak value) and 3.0 mA, respectively. In this experiment, the tube voltage was regulated from 20 to 25 kV, and the tube current was regulated by the filament temperature and ranged from 1.0 to 3.0 mA. The exposure time is controlled in order to obtain optimum film density, and the focal spot diameter was about 10 mm. The polycapillary plate is J5022-21 made by Hamamatsu Photonics Inc., and the outside and effective diameters are 87 and 77 mm, respectively. The thickness and the hole diameter of the polycapillary are 1.0 mm and 25 ${\mu}$m, respectively. The x-rays from the tube are formed into parallel beam by the polycapillary, and the radiogram is taken using an industrial x-ray film of Fuji IX 100 without using a screen. In the measurement of image resolution, we employed three brass spacers of 2, 30, and 60 mm in height. By the test chart, the resolution fell according to increases in the spacer height without using a polycapillary. In contrast, the resolution slightly fell with corresponding increases in the height by the polycapillary. In angiography, fine blood vessels of about 100 ${\mu}$m are clearly visible.

• 한국재료학회지
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• 제21권2호
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• pp.89-94
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• 2011

In this work, fabrication and electrochemical analysis of an individual multi-walled carbon nanotube (MWNT) electrode are carried out to confirm the applicability of electrochemical sensing. The reactive ion etching (RIE) process is performed to obtain sensitive MWNT electrodes. In order to characterize the electrochemical properties, an individual MWNT is cut by RIE under oxygen atmosphere into two segments with a small gap: one segment is applied to the working electrode and the other is used as a counter electrode. Electrical contacts are provided by nanolithography to the two MWNT electrodes. Dopamine is specially selected as an analytical molecule for electrochemical detection using the MWNT electrode. Using a quasi-Ag/AgCl reference electrode, which was fabricated by us, the nanoelectrodes are subjected to cyclic voltammetry inside a $2{\mu}L$ droplet of dopamine solution. In the experiment, RIE power is found to be a more effective parameter to cut an individual MWNT and to generate "broken" open state, which shows good electrochemical performance, at the end of the MWNT segments. It is found that the pico-molar level concentration of analytical molecules can be determined by an MWNT electrode. We believe that the MWNT electrode fabricated and treated by RIE has the potential for use in high-sensitivity electrochemical measurement and that the proposed scheme can contribute to device miniaturization.

• 동서간호학연구지
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• 제23권2호
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• pp.134-141
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• 2017

Purpose: The purpose of this study was to investigate the effects of the maternal health care program on pregnant women's depression, maternal role self-confidence and delivery self-efficacy in a public health center. Methods: This study used a non-equivalent control group quasi-experiment design attempted to verify the effectiveness of maternal health care program. In the experimental group (39 participants), maternal health care program was applied for 120 minutes for 8 weeks, and the control group (40 participants) was provided with a booklet for maternal health care. Data collection was conducted from September 20, 2015 to November 30, 2015. Data were analyzed using ${\chi}^2-test$, Fisher's exact test and t-test. Results: The maternal health care program showed a significant effect on maternal role self-confidence and delivery self-efficacy compared to control group. Conclusion: The maternal health care program conducted at the public health center was found to be effective in improving maternal role self-confidence and delivery self-efficacy. Further development of a program to mediate the depression of the expectant mothers is needed.

• Journal of the Optical Society of Korea
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• 제16권2호
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• pp.141-144
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• 2012

A mobile Rayleigh Doppler wind LIDAR at an eye-safe wavelength of 355 nm incorporating double-edge technique with triple-channel Fabry-Perot etalon is developed for wind measurement from 5 to 40km. The structure of this LIDAR system is described. An intercomparsion experiment with rawinsonde is made, showing good agreement with expected measurement accuracy. A continuous observation of stratosphere wind field for several days with temporal resolution of 15 min and spatial resolution of 200 m from 5 to 40 km is presented, demonstrating the stability and robustness of the LIDAR. A stratospheric quasi-zero wind layer can be found at around 20 km with a direction change from east to west evident in the continuous observation.

• 국제물리치료학회지
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• 제11권1호
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• pp.1960-1968
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• 2020

Background: The alignment of the neck and shoulder is important in people with forward head posture. However, previous studies have mainly conducted fragmentary studies on the neck and shoulders, and studies on the combined movement of the neck and shoulders are incomplete. Objective: To investigate the effects of 6 week dynamic exercise program using Thera-band on craniovertebral angle (CVA) in adults with forward head posture. Design: Quasi-experimental study. Methods: The study was conducted on 24 adults with forward head posture and experimented with neck and shoulder exercises and divided them into groups of neck exercises, shoulder exercises, and neck and shoulder exercises to measure CVA values before and after the experiment. The neck exercise program included flexion and extension muscles of the neck and shoulder exercises included dynamic exercise of the upper extremities such as the trapezius muscles and serratus anterior muscle. The CVA results were measured using PA200. Results: Following the interventions, neck exercise group showed significant improvement in CVA (P<.05), but shoulder exercise group and combined exercise group did not show any significant results (P>.05). However, both groups showed some positive results. Significant differences were seen in the comparisons between the three groups (P<.05), and the results of the post-hoc test showed significant differences in neck exercise group and shoulder exercise, neck exercise and combine exercise group. Conclusion: This study suggested that the Thera-band neck exercise is beneficial for foward head posture patients and is expected to be used in clinical trials.

• Steel and Composite Structures
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• 제29권4호
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• pp.451-464
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• 2018

This paper presents some quasi-static tests for 4 mixed columns composed of CFST column and RC column. The seismic performance and failure mode were studied under low-cyclic revised loading. The failure mode was observed under different axial compression ratios. The hysteretic curve and skeleton curve were obtained. The effects of axial compression ratio on yield mechanism, displacement ductility, energy dissipation, stiffness and strength attenuation were analyzed. The results indicate that the failure behavior of CFST-RC mixed column with archaized style is mainly caused by bending failure and accompanied by some shear failure. The axial compression ratio performs a control function on the yielding order of the upper and lower columns. The yielding mechanism has a great influence on the ductility and energy dissipation capacity of specimens. Based on the experiment, finite element analysis was made to further research the seismic performance by ABAQUS software. The variable parameters were stiffness ratio of upper and lower columns, axial compression ratio, yielding strength of steel tube, concrete strength and rebar ratio. The simulation results show that with the increase of stiffness ratio of the upper and lower columns, the bearing capacity and ductility of specimens can correspondingly increase. As the axial compression ratio increases, the ductility of the specimen decreases gradually. The other three parameters both have positive effect on the bearing capacity but have negative effect on the ductility. The results can provide reference for the design and engineering application of mixed column consisted of CFST-RC in Chinese archaized buildings.