• Journal of Korean Academy of Fundamentals of Nursing
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• v.10 no.1
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• pp.6-13
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• 2003

Purpose: A survey was done on knowledge of pain and pain interventions by clinical nurses in Deagu city and Kyoungbuk province. Method: The participants in this study were 209 nurses who worked in Daegu city, and 190 nurses who worked in Kyoungbuk province. The data were collected from August 5, to September 15, 2002. The data were analyzed with SPSS WIN 10.0 program using numbers, percentages, averages and standard deviation with t-test and ANOVA. Result: Out of a total of 30 points on general knowledge of pain, the clinical nurses had a high score of 28, and a low of 10. The average was 18.6 (SD=3.14). Of the participants, 57.9% reported not having had any pain education and 67.9% agreed that education is a necessity. Of pharmacological interventions, Tylenol had the highest score at 3.44 out of a possible 4 points. The most frequent route for giving medication was intramuscular injection (42.6%) and for 62.7%, there was a decision by the physician for routine medication or prn. On reactions after medication, moderate relief had the highest frequency (41.9%), and for side effects after the medication, feeling of nausea was most frequent (70.4%). Of the nonpharmacological approaches to pain relief, ice bag had the highest score with 2.95 out of a possible 4. Judgement to give medication was made by the nurse for 50.1% of the participants and 647% reported a little relief from pain. Conclusion: Based upon the results, continuing education and developing a better education programs (including pain mechanism, pain assessment, pharmacological interventions and nonpharmacological interventions) are needed for systematic pain management. Nurses need a high level of knowledge of pain, to be active in pharmacological interventions and nonpharmacological interventions.

• The Korean Journal of Pain
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• v.27 no.3
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• pp.260-265
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• 2014

Background: To evaluate the results of conventional radiofrequency thermorhizotomy (CRT) for trigeminal neuralgia (TN) in patients with failed medical management. Methods: Patients with Trigeminal neuralgia who were referred to us for 'limited intervention' during the time frame July-2011 to Jan-2013 were enrolled for this study. CRT was administered by the Sweet technique. Pain relief was evaluated by the principle investigator. Results: Eighteen patients were enrolled and completed a mean follow-up of 18.0 months. Pain relief was observed in 14 of 18 (77.8%) patients on the post-operative day, 14 of 18 (77.8%) at 1-month follow-up, 14 of 17 (82.4%) at 3-months follow-up, 12 of 15 (80%) at 6-months follow-up, 7 of 11 (63.6%) at 1-year follow-up and 2 of 6 (33.3%) 1.5 years of follow-up. Four patients required a repeat cycle of CRT; two at six months of follow-up and two at one year of follow-up. One patient was transferred for surgical intervention at six months of follow-up. Side-effects included facial hypoesthesia (n = 6); nausea/vomiting (n = 2), diminished corneal reflex (n = 13) and difficulty in chewing (n = 11). Severity of adverse effects gradually diminished and none of the patients who are beyond 6 months of follow-up have any functional limitation. Conclusions: CRT is an effective method of pain relief for patients with Trigeminal neuralgia. Successful outcome (excellent or good) can be expected in 66.7% of patients after first cycle of CRF. The incidence and severity of adverse effects is less and the procedure is better tolerated by the patients.

• Korean Journal of Social Welfare
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• v.56 no.4
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• pp.149-172
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• 2004

The main purpose of this study is to explore and understand the reality of culture of poverty that employees of emergent relief facilities recognize. For this purpose, it had been carried out questionnaire with employees of emergent relief facilities from November to December 2003. It was applied quantitative research method to this study. Major findings of the study are as follows: 1) the awareness of employees to facilities in which they work is positive, 2) but their awareness to service user is negative(the degree of individual characteristic, educational characteristic and economical characteristic of service user is generally negative, while the degree of familial characteristic is generally positive), 3) the awareness to relationship with service user is positive. The results of this study reveal possibility that the culture of poverty can be expanded under the poor and psychic rehabilitation programs should be reinforced.

• Proceedings of the KIEE Conference
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• 2000.07c
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• pp.2038-2040
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• 2000

The main objective of this paper is to design and test a new type of polymer ZnO surge arrester for AC power system of railroad vehicles. Metal oxide surge arrester for most electric power system applications, electric train and subway are now being used extensively to protect overvoltage due to lightning. Surge arresters with porcelain housing must not have explosive breakage of the housing to minimize damage to other equipment when subjected to internal high short circuit current. When breakdown of ZnO elements in a surge arrester occurs due to flashover, fault short current flows through the arrestor and internal pressure of the arrester rises. The pressure rise can usually be limited by fitting a pressure relief diaphragm and transferring the arc from the inside to the outside of the housing. However, there is possibility of porcelain fragmentation caused by the thermal shock, pressure rise. etc. Non-fragmenting of the housing is the most desired way to prevent damage to other equipment. The pressure change which is occurred by flashover become discharge energy. This discharge energy raises to damage arrester housing and arrester housing is dispersed as small fragment. Therefore, the pressure relief design is requested to obstruct housing dispersion. The main research works are focused on the structure design by finite element method, pressure relief of module, and studies of performance of surge arrester for electric railway vehicle.

• Journal of Korean Clinical Nursing Research
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• v.17 no.2
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• pp.286-296
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• 2011

Purpose: This research was done to compare the pain relief effects of various nursing interventions, such as cold therapy, attention diversion and 10% Lidocaine spray during arteriovenous fistula needling for patients on hemodialysis, and also to identify and develop more effective nursing interventions for pain relief in these patients. Methods: This research was conducted from October 1, 2010 to January 31, 2011 with 8 hemodialysis patients, who were on regular dialysis (3 times a week) at K University Hospital in Seoul and had an arteriovenous fistula within the past 3 months. Each patient received the three nursing interventions (cold therapy, attention diversion and 10% Lidocaine spray therapy) prior to the arteriovenous fistula needling and applied in turn with the series being repeated 4 times. After each intervention, physiologic indexes, subjective and objective pain were measured at the time of needling. ANOVA was used with SPSS/WIN 12.0 to analyze pain scores and comparison of physiologic indexes (BP, pulse). Results: No significant differences were found for subjective pain (p=.574), objective pain (p=.562) and total pain (p=.506) among the 3 interventions. Systolic blood pressure (p=.689), diastolic blood pressure (p=.969) and pulse (p=.980) also showed no significant difference among the 3 interventions. Conclusion: These 3 interventions are all possible for pain relief during arteriovenous fistula needling for these patients. However, the only interventions that nurses can do independently are cold therapy and attention diversion so we recommend that these nursing interventions be used.

• Journal of Pharmacopuncture
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• v.24 no.2
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• pp.41-53
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• 2021

Objectives: Cesarean sections are one of the common surgical procedures around the world. Management of cesarean section side effects, including pain, hematoma, delayed wound healing, is of particular importance in maintaining maternal health and ability to care for the baby. The tendency to use complementary medicine strategies is on the rise because of the easy treatment with low side effects. The purpose of this study was to systematically review the efficacy and safety of clinical trials performed in Iran and worldwide on the effect of complementary medicine on pain relief and wound healing after cesarean section. Methods: PRISMA checklist was followed to prepare the report of this systematic review. The search process was carried out on databases on databases of Magiran, SID, Iran Medex, Scopus, Pub Med, Science direct, Medline and Cochrane library using keywords of cesarean, pain, wound healing, Herbal medicine, acupressure, massage, complementary medicine and their Persian equivalent and all possible combinations, from inception until February 2020. We used the Jadad scale to assess the quality of the searched articles. According to the Jadad scale, the articles with a score of at least 3 were included in the study. Results: Finally, 28 clinical trials (with a sample size of 3,245) scored at least 3 on the Jadad scale were included into the analysis. This article reviewed 13 articles on medicinal herbs, 4 articles on massage, 1 article on reflexology, 2 articles on acupressure. Conclusion: According to the present review, the use of medicinal herbs was the most common method of complementary medicine in pain relief and wound healing after cesarean section.

• Nuclear Engineering and Technology
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• v.55 no.4
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• pp.1382-1399
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• 2023

Pressure relief valve (PRV) is one of the important control valves used in nuclear power plants, and its sealing performance is crucial to ensure the safety and function of the entire pressure system. For the sealing performance improving purpose, an explicit function that accounts for all design parameters and can accurately describe the relationship between the multi-design parameters and the seal performance is essential, which is also the challenge of the valve seal design and/or optimization work. On this basis, a surrogate model-based design optimization is carried out in this paper. To obtain the basic data required by the surrogate model, both the Finite Element Model (FEM) and the Computational Fluid Dynamics (CFD) based numerical models were successively established, and thereby both the contact stresses of valve static sealing and dynamic impact (between valve disk and nozzle) could be predicted. With these basic data, the polynomial chaos expansion (PCE) surrogate model which can not only be used for inputs-outputs relationship construction, but also produce the sensitivity of different design parameters were developed. Based on the PCE surrogate model, a new design scheme was obtained after optimization, in which the valve sealing stress is increased by 24.42% while keeping the maximum impact stress lower than 90% of the material allowable stress. The result confirms the ability and feasibility of the method proposed in this paper, and should also be suitable for performance design optimizations of control valves with similar structures.

• The Korean Journal of Emergency Medical Services
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• v.7 no.1
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• pp.109-118
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• 2003

With the rapid development of information and communication technology, a lot of multi-media learning programs are being developed and reported in the field of Emergency medicine both home and abroad. In this connection, this study was aimed at developing a foreign-body airway obstruction courseware in adults for EMT. The development period of CAI courseware lasted from May 2003 through November 2003. Among CAI courseware patterns, private instruction and repeat practice and simulation patterns were used as an instruction-learning strategy. The learning contents of the CAI courseware consisted of five chapters concerning (1) A relief of partial FBAO in the responsible victim, (2) A relief of complete FBAO in the responsible victim, (3) In case of unconsciousness in the responsible victim without removing all foreign body, (4) In case of consciousness in all victims after getting removed all foreign body and (5) A complete airway obstruction in victims without consciousness on the basis of assess responsiveness and the degree of airway obstruction. The way to use this courseware, with just a click on one specific chapter, was developed to proceed a course with progressive algorithm, a method of solving problems by choosing one between two situations. A characteristic of this CAI courseware is the enhanced efficiency of an instruction-learning method by providing an opportunity of choice based on situations in its effort to encourage learners to use a self-initiated learning method, not one-way method and to enhance problem solving skills among situations. Moreover, this courseware went through the diverse phases such as development, application, feedback in connection with learning process by practicing teachers, so that the courseware could be used frequently in the future. The contents of this courseware were written with the web, so that, if necessary, the contents could be continuously modified and complemented and handed out in the form of CD-ROM. This study indicates that the development of a variety of CAI courseware requires institutional and financial assistance and initiatives reflecting a reality in terms of learning process, technical assistance and resources.

• Transactions of the Korean Society of Automotive Engineers
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• v.17 no.1
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• pp.190-196
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• 2009

This study proposes a structural design method for the upper control arm installed at the rear side of a SUV. The weight of control arm can be reduced by applying the design and material technologies. In this research, the former includes optimization technology, and the latter the technologies for selecting aluminum as a steel-substitute material. Strength assessment is the most important design criterion in the structural design of a control arm. At the proto design stage of a new control arm, FE (finite element) analysis is often utilized to predict its strength. This study considers the static strength in the optimization process. The inertia relief method for FE analysis is utilized to simulate the static loading conditions. According to the classification of structural optimization, the structural design of a control arm is included in the category of shape optimization. In this study, the kriging interpolation method is adopted to obtain the minimum weight satisfying the strength constraint. Optimum designs are obtained by ANSYS WORKBENCH and the in-house program, EXCEL-kriging program. The optimum results determined from the in-house program are compared with those of ANSYS WORKBENCH.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1993.10a
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• pp.482-487
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• 1993

A prediction method for determining the welding residual stress by artificial neural network is proposed. A three-dimensional transient thermomechanical analysis has been performed for the CO $_{2}$ Arc Welding using the finite element method. The validity of the above results is demonstrated by experimental elastic stress relief method which is called Holl Drilling Method. The first part of numarical analysis performs a three-dimensional transient heat transfer anslysis, and the second part then uses results of the first part and performs a three-dimensional transient thermo-clasto-plastic analysis to compute transient and residual stresses in the weld. Data from the finite element method were used to train a backpropagation neural network to predict residual stress. Architecturally, the finite element method were used to train a backpropagation voltage and the current, a hidden layer to accommodate failure mechanism mapping, and an output layer for residual stress. The trained network was then applied to the prediction of residual stress in the four specimens. The results of predicted residual stress have been very encouraging.