• Journal of the Korean Society for Aviation and Aeronautics
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• v.27 no.1
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• pp.10-19
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• 2019

As a domestic aviation industry has been growing continuously, the air traffic volume of en-route has increased rapidly to 2,300 a day. According to developing air navigation system including Performance Based Navigation(PBN), the manner of flights has diversified. Consequentially task of air traffic service has been increasing more and more and the organization of Air Traffic Service(ATC) established one Air traffic management Office(ATMO), extends to 3 Regional organization(Seoul, Busan, Jeju) and a number of air traffic controller exceeds 600. The purpose of this research is going to investigate the relationship between organization's safety climate and air traffic controller's safety behavior, In pursuing above, previous studies related to co-worker and supervisor's safety climate were examined for literature review. Based on this previous studies, research model was constructed. Hypothesis was verified by effect. Data from 209 samples was employed for final survey. The main results show that co-worker and supervisor's safety climate were meaningful factors to effect perceived Safety Behavior and safety knowledge, safety motivation were significantly and positive related to safety compliance.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.22 no.3
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• pp.178-187
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• 2009

Background : Atopic dermatitis is chronic exzemaous dermatitis and the recurrence rate of atopic dermatitis is high. Many patients are suffering from pruritus. Objective : This study compared ambulatory care with hospitalization for atopic dermatitis treatment of one patient, and investigated the effect of Oriental medicine program for atopic dermatitis patients during short term hospitalization. Method : We treated a 5 year-old boy with uncontrollable atopic dermatitis by ambulatory care and hospitalizaion. Herbal medication and herbal dressing was done samely during ambulatory care and hospitalization. Intensive life management, education for compliance was done only during hospitalization. Results : Even though he had been treated for 5 months by ambulatory care, he still suffered from severe itching, erythema, oozing and insomnia. Admission duration was 10 days. During admission, the SCORAD scores and subjective scores were decreased rapidly. Conclusion : We concluded that effects of the treatments can be different due to compliance of the patient and in that view the short term hospitalization program could be more helpful than ambulatory care for uncontrollable atopic dermatitis patients.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.7 no.3
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• pp.366-378
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• 2000

Type 2 Diabetes Mellitus patients have chronic metabolic disorder and they need self care for their lifetime. But most Diabetes Mellitus patients don't know how to do a self care due to the lack of adequate support from health care professionals. It has been reported that lack of exercise therapy compliance guide is very important one. This study was conducted to develop an exercise therapy protocol applied to an efficacy expectation promoting program based on Bandura's self efficacy model for type 2 Diabetes Mellitus patients. Firstly, a conceptual framework was developed through efficacy expectation promoting Program based on Bandura's self efficacy model. In order to identify the contents of program and to design a preliminary protocol, a with the consultation experts was made. A clinical validity was tested using twenty type 2 Diabetes Mellitus patients who received follow-up care regularly through the diabetic out-patient clinic from October, 1998 to May, 2000. After this process, the final protocol was developed. The results of this study are summarized as bellows : The final exercise therapy protocol applied to an efficacy expectation promoting program for type 2 Diabetes Mellitus Patients consists of individualized exercise test and prescription, a small booklet relating personal experience with Diabetes Mellitus and a telephone coaching program for 12 weeks on performance accomplishment, vicarious experience and verbal persuasion, which are all induction modes of efficacy expectation. It is concluded that the exercise therapy protocol applied to an efficacy expectation promoting program is applicable to type 2 diabetes mellitus. And this exercise therapy protocol could show a positive effect on the exercise compliance of Diabetes Mellitus patients.

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.10
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• pp.204-209
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• 2014

The purpose of this study is to produce a simulator that can control a pulse pressure keeping the pulse wave transfer phenomenon. For this, the elastic tube is combined with a compliance chamber for the vessel part. The simulator is comprised of four parts; a pressure generation part with slider-crank mechanism, a vessel part with resistance controller, water reservoirs and a measurement part. The changes of waveform depending on the location of a chamber is examined to determine the position of a chamber. The effects of a chamber on the pulse pressure and the pulse wave transfer phenomenon were investigated. It showed that the simulator which had the chamber in upstream of tube produces pressure wave, being more similar to the clinical waveform than in downstream of tube. Furthermore, with the chamber, the simulator generates a pulse pressure, being more similar to the normal physiological values than without one. The chamber had little effect on the pulse wave velocity.

• Tuberculosis and Respiratory Diseases
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• v.81 no.1
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• pp.6-12
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• 2018

The role of the treatment for latent tuberculosis infection (LTBI) has been underscored in the intermediate tuberculosis (TB) burden countries like South Korea. LTBI treatment is recommended only for patients at risk for progression to active TB-those with frequent exposure to active TB cases, and those with clinical risk factors (e.g., immunocompromised patients). Recently revised National Institute for Health and Care Excellence (NICE) guideline recommended that close contacts of individuals with active pulmonary or laryngeal TB, aged between 18 and 65 years, should undergo LTBI treatment. Various regimens for LTBI treatment were recommended in NICE, World Health Organization (WHO), and Centers for Disease Control and Prevention guidelines, and superiority of one recommended regimen over another was not yet established. Traditional 6 to 9 months of isoniazid (6H or 9H) regimen has an advantage of the most abundant evidence for clinical efficacy-60%-90% of estimated protective effect. However, 6H or 9H regimen is related with hepatotoxicity and low compliance. Four months of rifampin regimen is characterized by less hepatotoxicity and better compliance than 9H, but has few evidence of clinical efficacy. Three months of isoniazid plus rifampin was proved equivalence with 6H or 9H regimen in terms of efficacy and safety, which was recommended in NICE and WHO guidelines. The clinical efficacy of isoniazid plus rifapentine once-weekly regimen for 3 months was demonstrated recently, which is not yet introduced into South Korea.

• Nuclear Engineering and Technology
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• v.38 no.7
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• pp.639-656
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• 2006

In order to apply the leak before break (LBB) concept to nuclear piping systems, the dynamic strain aging effect of low carbon steel materials has to be taken into account, in compliance with the requirements of the Korean Standard Review Guide (KSRG) 3.6.3-1. For this goal, J-R tests are needed for a range of various temperatures and loading rates, including dynamic loading conditions. In the dynamic loading J-R test, the unloading compliance method can not be applied to measure the crack growth and direct current potential drop (DCPD) method; this method also has a problem defining the crack initiation point. The normalization method is known as a very useful method to determine the J-R curve under dynamic loading because it does not need additional equipment or complicated loading sequences such as electric current or unloading. This method was accepted by the American Society for Testing and Materials (ASTM) as a standard test method E1820 A15 in 2001. However, it has not yet been clearly verified yet if the normalization method is sufficiently reliable to be applied to LBB. In this study, the basic background of the J-integral, LBB and dynamic loading J-R test are explained, and the current status for dynamic loading J-R test methods are reviewed from the view point of LBB for nuclear piping. In particular, the theoretical and historical background of the normalization method which has received attention recently, is summarized. Recent studies for this method are introduced and future works are suggested that may improve the reliability of LBB for nuclear piping.

• Journal of Oral Medicine and Pain
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• v.46 no.2
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• pp.41-48
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• 2021

Purpose: To evaluate compliance by analyzing and comparing treatment duration, degree of improvement after treatment and treatment response of oral lichen planus (OLP) patients according to characteristics of them and the severity of the lesion. Methods: According to treatment process, 132 subjects with OLP who first visited the Department of Oral Medicine at the Pusan National University Dental Hospital from January 2017 to December 2020were classified into three groups: Treatment completed (CT) group, Under treatment (UT) group, and Dropped out during follow-up (DT) group. The reticulation/keratosis, erythema, and ulceration (REU) scoring system was used to assess the severity of OLP. The degree of improvement after treatment was evaluated in CT group. Results: There were 53 (40.15%) CT, 27 (20.45%) UT and 52 (39.39%) DT. In CT group, according to initial REU score there was a statistical difference in the degree of improvement, but not in the length of time to complete treatment. There was no statistical difference between the days it took for patients to feel symptom relief, and the days of entire treatment among three groups. However, there was a positive correlation between the REU score of gingiva and duration of treatment in DT group. In the CT and DT groups, there was a correlation between the length of time taken to relieve symptoms and the duration of treatment. Conclusions: The severity of the gingival lesion and the initial response to treatment have a large effect on the entire treatment period and prognosis, so it should be considered when explaining the disease prognosis and treatment period to patients, and the clinician needs to focus on initial symptom relief.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.35 no.6
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• pp.343-349
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• 2022

This paper proposes a new topology optimization scheme to determine optimized joints for multi-component models. The joints are modeled as zero-length high-stiffness spring elements. The spring joints are considered as mesh-independent springs based on a joint-element interpolation scheme. This enables the changing of the location of the joints regardless of the connected nodes during optimization. Because the joints are movable, the locations of the optimized joints should be aggregated at several points. In this paper, the novel joint dispersal (JD) constraint to prevent joint clustering is proposed. With the joint dispersal constraint, it is possible to determine the optimized joint location as well as optimized topologies while maintaining the minimum distance between each joint. The mechanical compliance value is considered as the objective function. Several topology optimization examples are solved to demonstrate the effect of the joint dispersal constraint.

• Journal of Industrial Convergence
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• v.21 no.3
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• pp.65-74
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• 2023

This study aimed to identify the effect of occupational calling, compliance with standard precautions and perceived threat for COVID-19 on the COVID-19 burnout of hospital nurses in the convergence society. The participants were 212 nurses; data were analyzed using t-test, ANOVA, Pearson correlation, multiple regression. This study found that: hospital nurses showed higher score for perceived threat of COVID-19, higher scores for COVID-19 burnout. The main factors influencing COVID-19 burnout were perceived threat of COVID-19 (𝛽=.233), and working unit (𝛽=.154). They explained about 6.7% of the COVID-19 burnout. Therefore, systematic support and nursing education is needed to reduce the perceived threat of COVID-19 among nurses.

• Structural Engineering and Mechanics
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• v.91 no.2
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• pp.211-225
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• 2024

Soft bending actuators have gained significant interest in robotic applications due to their compliance and lightweight nature. Their compliance allows for safer and more natural interactions with humans or other objects, reducing the risk of injury or damage. However, the nonlinear behaviour of soft actuators presents challenges in accurately predicting their bending motion and force exertion. In this research, a new comprehensive study has been conducted by employing a developed 3D finite element model (FEM) to investigate the effect of geometrical and material parameters on the bending behaviour of a soft pneumatic actuator reinforced with Kevlar fibres. A series of experiments are designed to validate the FE model, and the FE model investigates the improvement of actuator performance. The material used for fabricating the actuator is RTV-2 silicone rubber. In this study, the Cauchy stress was expanded for hyperelastic models and the best model to express the stress-strain behaviour based on ASTM D412 Type C tensile test for this material has been obtained. The results show that the greatest bending angle was achieved for the semi-elliptical actuator made of RTV2 material with a pitch of 1.5 mm and second layer thickness of 1 mm. In comparison, the maximum response force was obtained for the semi-elliptical actuator made of RTV2 material with a pitch of 6 mm and a second layer thickness of 2 mm. Additionally, this research opens up new possibilities for development of safer and more efficient robotic systems that can interact seamlessly with humans and their environment.