• The Journal of Korean Academic Society of Nursing Education
• /
• v.22 no.4
• /
• pp.559-566
• /
• 2016

Purpose: This study aimed to examine the communication styles and nursing service satisfaction of clinical research nurses perceived by clinical subjects. Methods: The data were collected with self-administrated questionnaires after receiving consents from 200 clinical trial subjects. The data were analysed with descriptive statistics, t-test, ANOVA, Pearson's correlation coefficients and stepwise multiple regression analysis using SPSS 21.0 statistic program. Result: Clinical subjects perceived that clinical research nurses used the informative, affective, and non-authoritative communication styles. The study identified factors influencing the nursing service satisfaction, and they were the informative communication styles (${\beta}$=.34, p<.001) and affective communication styles (${\beta}$=.35, p<.001, $R^2$=37%) by multiple linear regression. Conclusion: If educational programs on communication are developed to help clinical research nurses use the informative and affective communication styles according to the characteristics of subjects and applied to the field of practice, they will be able to increase the nursing service satisfaction and contribute to the higher quality of clinical trials.

• Proceedings of the IEEK Conference
• /
• 1998.10a
• /
• pp.67-70
• /
• 1998

In this paper, an interference analyzer for communication and/or broadcasting services is developed and presented based on Monte Carlo technique, which is now under study in the International Telecommunication Union(ITU). Monte Carlo technology is a statistical approach which functions by considering many trials. For each simulation trial, a scenario is built up using a number of different random variables, such as signal and interference strengths, transmitting and receiving antenna heights, antenna gains, etc.. Furthermore, this paper shows and application example of the analyzer to examine interference influence of the PCS(IS-95) base stations affecting to the IMT-2000 FDD base station, depending on serveral service environments like rural, suburban, and urban areas. The wave propagation model used in this simulation is the modified Hata model, which is known to the suitable to Korean environments.

• Proceedings of the KIEE Conference
• /
• 2005.07d
• /
• pp.3040-3042
• /
• 2005

During the last several years, interest in broad-band power line communications (PLC) has been grown over medium voltage(MV) power distribution lines as well as low voltage lines. This paper introduces a medium voltage PLC test field that is set up in the suburbs of Euiwang city in Korea. This test field could be used not only for the measurement of communication channel environment but also for internet service. This paper shows the configuration of medium voltage test field with network devices like MV signal coupler and the results of channel environment like noise and impulse response. It also shows the service performance of PLC access network through network management system.

• Journal of the Korean Society for Railway
• /
• v.8 no.5
• /
• pp.434-438
• /
• 2005

In this paper, as the first step to assess and enhance the reliability of Korea High Speed Train, an electric traction system is selected and reliability analysis is carried out. The electric traction system is classified into subsystems and functional block diagrams and reliability block diagrams are drawn. Expressions for evaluating the reliability are derived and Mean Kilometer Between Service Failure is calculated using the trial track test results. The calculation results show reliability growth of the proposed system.

• Journal of the Korean Society for Railway
• /
• v.8 no.5
• /
• pp.477-482
• /
• 2005

Through a year's commercial operation, Korea High Speed Railway has solved defectives from several breakages at the beginning and is going into the stage of stable operation. Among issues, wheel wear becomes a matter of primary concerns in view of vehicle's stability and maintenance. It was understood as above that wear status has been improved in the test by which railway system including vehicles and tracks was stabilized during a year's commercial operation, comparing to that with excessive wear in the trial operation prior to opening to the public. To make out wheel's wear status and characteristics of equivalent conicity at present when the service has been introduced a year ago and the average cumulative mileage of vehicles reach almost 500,000km, wheel's wear types were analyzed with the current vehicles in service.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.21 no.2
• /
• pp.417-426
• /
• 1996

The end-to-end service clock recovery is a critical issue in providing constandt bit rate service through ATM network. The Synchronous Residual Time Stamp(SRTS) algorithm is used to recovery the source clock using time stamp of transmitter. In thispaper, we propose a Differential Residual Time Stamp (DRTS) transmission mechanism to effectively deliver the timing information of source clock in SRTS algorithm. The RTS transmission method simple in its hardware. From the results of field trial of DS3 rate interactive video communication system through B-ISDN testbed, it can be identified that DRTS method is superior to the RTS method.

• The Journal of Internal Korean Medicine
• /
• v.41 no.6
• /
• pp.959-966
• /
• 2020

Objectives: To examine the fundamental characteristics of interventional clinical trials registered in the CRIS (Clinical Research Information Service) database. Methods: We systematically analyzed the status of Korean medical interventions using the search function of the CRIS database. Results: From 2010 to January 2020, 267 Korean medicine-related clinical trials were registered with CRIS. The studies, which included many randomized trials (80.14%), focused primarily on demonstrating the effectiveness and safety of acupuncture and Korean herbal remedies. Most of these studies were government-sponsored and researcher-led clinical trials, but a few were company-sponsored trials. All trials were small and need improvement. Conclusion: This study reviews the current status of clinical trials in the field of Korean medicine and the basic data that can be used to create evidence-based Korean medicine.

• Journal of Acupuncture Research
• /
• v.41 no.2
• /
• pp.87-95
• /
• 2024

This review aims to analyze the efficacy of acupotomy in treating superior cluneal nerve entrapment syndrome (SCNES) by summarizing the findings of randomized controlled trials (RCTs). The RCTs were retrieved from seven databases (i.e., the Cochrane Library, PubMed, Embase, China National Knowledge Infrastructure, Korean Studies Information Service System, Research Information Service System, and Oriental Medicine Advanced Searching Integrated System). Seven RCTs were selected for this review. The results indicate that acupotomy is promising for providing significant pain relief and improving function in patients with SCNES. However, more high-quality RCTs are required to establish the long-term effectiveness and safety of acupotomy. This review provides valuable insights for clinicians and researchers in the management of SCNES.

• Journal of Korean Physical Therapy Science
• /
• v.24 no.1
• /
• pp.59-68
• /
• 2017

Purpose : The aims of this study was to conduct a systematic literature review with meta-analysis to investigate the effect of virtual reality based rehabilitation program on balance of patient with stroke in Korean studies. Method : The studies for analysis were searched in electronic databases(Research Information Sharing Service; RISS, Korean Studies Information Service; KISS, DBpia, e-articles, National Assembly Library). The key words for search were 'virtual reality', 'stroke', and 'balance' and only randomized controlled trials and clinical controlled trials were included. Of 40 studies identified in the search, 20 studies met the criteria of this study and included in this meta-analysis. Result : The results were as follows: 1) The overall effect size of virtual reality based rehabilitation program was 0.557(95% critical interval; 0.340~0.774). 2) In the analysis of sub-categorical variables, effect size was as follows; the commercial game type(0.621) > virtual environment type(0.335); the dynamic balance measurement(0.750) > static balance measurement(0.226); randomized controlled trial(0.653) > clinical controlled trial(0.275); and thesis type(0.706) > article of journal type(0.339). 3) In the analysis of sub-continuous variables, as time of program(per session) increased, the balance increased(p<0.05). Conclusion : The results of this study showed that virtual reality based rehabilitation program moderately improves the balance of stroke patient. Further studies are recommended to investigate the effect of sub-variables related to virtual reality programs on motor functions of patient with stroke.

• The Journal of Pediatrics of Korean Medicine
• /
• v.35 no.4
• /
• pp.56-74
• /
• 2021

Objectives The purpose of this study is to analyze the trend of herbal medicine treatment, treatment's effect and stability for Crohn's disease by reviewing clinical studies published over the past 5 years. Methods 22 articles which were published from 2017 to August, 2021 were obtained from the ScienceON, Research information sharing service (RISS), Koreanstudies Information Service System (KISS), Oriental medicine advanced searching integrated system (OASIS), China national knowledge infrastructure (CNKI), Pubmed. We analyzed the literature in regards to the treatment methods and results. Results There were 6 case reports, 1 controlled clinical trial, and 15 randomized controlled trial and in most cases, herbal medicines and Western medicines were administered in combination. The pathology of damp-heat due to spleen deficiency was the most common, and Sijunzi-tang and Shenling Baishu san were the most commonly used. As a result of the treatment, it was found that the combined administration of the herbal medicine and the Western medicine was more effective than the administration of the Western medicine alone. Conclusions Herbal treatment of Crohn's disease induced high cure rate safely than when only western treatment was applied. Future studies on safety and studies that can suggest specific guidelines for the combined administration of western and herbal medicines are needed.