• Anxiety and mood
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• v.5 no.2
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• pp.133-138
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• 2009

Diagnosing post-traumatic stress disorder (PTSD) is challenging for several reasons: a lack of training in trauma assessment for most clinicians, underreporting and avoidance by patients, the overlapping of symptoms, and a high comorbidity with other mental disorders. Thus, a careful evaluation and differential diagnosis are essential for the treatment and management of this population. A concept of posttraumatic reaction in people with narcissistic vulnerability, called Trauma-Associated Narcissistic Symptoms (TANS) had appeared in the literature; this has not been, however, systemically investigated. This study examines three cases of TANS that developed after traumatic events such as traffic accidents and physical assault. TANS may mimic PTSD and can show similar features; however, a careful attention to the context and meaning of symptoms can help the clinicians in differentiating TANS from PTSD. Clinicians working with trauma and compensation evaluators should be on alert for this easily overlooked condition.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.22 no.5
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• pp.64-72
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• 2008

In the three phase four wire system, voltage unbalance caused by the unbalanced load operation, gives rise to current unbalance and de-rates by the increase of machine's loss and eventually enlarges power capacity and besides has a bad effect on power quality. Power capacitor has been used for the power factor correction of inductive load and the voltage stability of power system. And it uses instead of power side for magnetic excitation of induction motor. If voltage unbalance keeps up, it affects on voltage stress at the power capacitor and finally can be caused breakdown. In this paper, we analysed that voltage and current of power capacitor increases by the voltage unbalance factor and its stress is growing more and more.

• The Korean Journal of Pharmacology
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• v.31 no.1 s.57
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• pp.95-102
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• 1995

The pathogenesis of diabetic nephropathy is still not completely understood while renal disease is one of the most common disabling complications of diabetes. We, in the present study, investigated the possible involvement of oxidative stress in the development of diabetic nephropathy. To hasten the development of diabetic nephropathy, streptozotocin was injected to unilaterally nephrectomized rats (NEPH-STZ). Eight weeks later, NEPH-STZ rats developed severe hyperglycemia, proteinuria, and hypertension. The kidneys of these rats showed compensatory hypertrophy and mesangial expansion. In contrast, the rats with streptozotocin injection alone (STZ) did not increase urinary protein excretion. Nephrectomized non-diabetic rats (NEPH) developed increased urine protein excretion, but without prominent renal morphological changes. However, oxidation of renal cortical tissue protein significantly increased in all 3 groups of NEPH, STZ and NEPH-STZ in comparison to control rats (CONT). The result indicates the non-specificity of the oxidative tissue damage and suggests that the oxidative damage is hardly a sole mechanism leading to the development of the diabetic nephropathy. However, it would still be a contributing factor considering that the oxidative stress is a common final pathway mediating tissue damages in chronic diabetic complications and other serious illness.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.7 no.4
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• pp.169-178
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• 2012

The aim of this study is to look into the influential factors on the care-workers-perceived job stress level according as the elderly-perceived satisfaction varies depending on care workers' organizational characteristic & attitudes toward work, and there's necessity of reducing their job stress. Hereupon, this study, targeting the care workers at domiciliary visit care centers in Seoul district, analyzed the influential factors of organizational factors consisting of the sub-factors, such as job autonomy, compensation, education and development, members' interrelationship, etc. on the perception level of job stress. As a result of analysis, it was found that the shorter their working hours, the more their salary, the more guaranteed their job autonomy, and the better their interrelationship is, the care workers at a domiciliary visit care center had a positive perception of job stress. Accordingly, the operators of domiciliary visit care centers are requested to have a lot more concerns for diverse forms of improvements which can not only improve care workers' working conditions, such as daily working hours and a pay level but also promote a sense of fellowship between members; in addition, it is hoped that the operators should improve the organizational environment so that care workers can freely carry out their assigned business with a sense of responsibility rather than relying on control and regulation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.11
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• pp.4914-4923
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• 2011

This study aims to investigate the factors influencing job satisfaction to job stress of physician assistant(PA) nurses. This research design was a descriptive study. The subjects in this study were 104 PA nurses. Data were collected from September 1, 2010 to January 10, 2011, and analyzed by SPSS PASW statistics 18.0 program. The mean score of men on the job stress was 43.47(${\pm}13.77$), The mean score of women was 45.07(${\pm}9.78$). The mean score of job satisfaction was 2.72(${\pm}0.30$). There was no statistical difference between general characteristics and job satisfaction. There were statistical difference between unmarried subjects and organizing system(p<.05), inadequate compensation(p<.01). In the results of multivariate regression analysis, adjusted $R^2$ value was 0.567. The model fit was 56.7%. Job satisfaction was low in the insufficient job control and inadequate organizing system. It is hospital policies for the reduction of job stress(particularly, insufficient job control, and organizing system stress).

• Journal of Digital Convergence
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• v.18 no.12
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• pp.105-115
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• 2020

The purpose of this study is to investigate the factors influencing the innovation resistance of cloud computing services and to suggest policy alternatives to increase the use of domestic cloud computing services. For this, a survey was conducted on 178 SMEs that introduced cloud computing services with government support. As a result, technostress, CEO informatization leadership and organizational structure concentration had a significant influence on innovation resistance. Therefore, in the future, first, it is necessary to provide user-centered cloud computing services in the direction of reducing technostress. Second, it is necessary to apply cloud computing services through a deeper understanding of the organizational characteristics of each small and medium enterprise. Third, there is a need for advanced security authentication and a compensation system. In order to promote the use of cloud computing services, an environment in which users can safely use should be prepared first.

• Journal of the Microelectronics and Packaging Society
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• v.16 no.2
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• pp.33-42
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• 2009

A polymer-based flexible neural probe was fabricated for monitoring of neural activities from a brain. To improve the insertion stiffness, a 5 ${\mu}m$ thick biocompatible Au layer was electroplated between the top and bottom polymer layers. The developed neural probe penetrated a gel whose elastic modulus is similar to that of a live brain tissue without any fracture, To minimize mechanical residual stress and bending from the probe, two new methods were employed: (1) use of a thermal annealing process after completing the device and (2) incorporation of multiple different layers to compensate the residual stress between top and bottom layers. Mechanical bending around the probe tip was clearly removed after employing the two processes. In electrical test, the developed probe showed a proper impedance value to record neural signals from a brain and the result remained the same for 72 hours. In simple in-vitro probe characterization, the probe showed a great removal of residual stress and an excellent recording performance. The in-vitro recording results did not change even after 1 week, suggesting that this electrode has the potential for great recording from neuron firing and long-term implant performance.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.1
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• pp.132-139
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• 2017

The purpose of this study was to obtain data for contribution of job characteristics (workload, autonomy, reward, community, fairness, and value) to job burnout (emotional exhaustion, and cynicism), and job engagement (vigor, dedication, and absorption) in foodservice dietitians. Our survey was administered to 393 school foodservice dietitians in the Busan area on February 11, 2014. The mean scores of nutrition teachers were significantly higher for autonomy (P<0.01), reward (P<0.05), community (P<0.01), fairness (P<0.001), and value (P<0.001) than unlimited period contract dietitians. The mean scores of high school dietitians were significantly higher for emotional exhaustion (P<0.01) and cynicism (P<0.001) than elementary school dietitians and middle school dietitians. Workload (r=-0.609, P<0.001), reward (r=-0.417, P<0.001), and fairness (r=-0.394, P<0.01) correlated significantly with emotional exhaustion. Reward (r=-0.324) and value (r=-0.423) correlated significantly (P<0.01) with cynicism. Value correlated significantly (P<0.01) with vigor (r=0.493), dedication (r=0.480), and absorption (r=0.460). Workload (${\beta}=-0.521$, P<0.001) had the highest negative influence on emotional exhaustion, whereas value (${\beta}=-0.325$, P<0.001) had the highest negative influence on cynicism. Value had the highest positive influence on vigor (${\beta}=0.392$, P<0.001), dedication (${\beta}=0.443$, P<0.001), and absorption (${\beta}=0.444$, P<0.001). Based on the results of this study, school management should plan job characteristics strategies to reduce workload and increase value for school foodservice dietitians.

• Proceedings of the KIEE Conference
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• 2008.04c
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• pp.22-25
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• 2008

전력용 커패시터는 부하에 필요한 무효전력을 대신 공급함으로써 공급전력을 줄여 역률을 개선하시키고, 전압을 안정시키며, 손실의 저감으로 전원용량을 증대할 수 있는 등 여러 가지 장점을 가지고 있다. 그러나 전압 불평형과 같은 전기품질의 저하와 비선형 부하등과의 혼합 사용시 전압 및 전류 등의 증가로 인해 전기적인 스트레스를 받게 된다. 본 논문에서는 선형 및 비선형 부하의 사용시 역률 보상으로 운전되고 있는 커패시터가 어떤 특성변화를 나타내는지에 대해 유도성 부하와 컨버터 회로를 사용하여 모의를 실시하였다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.10a
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• pp.33-36
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• 2009

콘덴서는 유도성 부하의 늦은 역률 보상으로도 사용되며, 비선형 부하에서 발생하는 고조파를 저감하기 위해 리액터에 직렬로 연결하여 사용되기도 한다. 콘덴서는 전압이 증가할 경우 전류도 함께 증가하고, 주파수가 증가할 경우 콘덴서에 흐르는 전류가 증가하기 때문에 전류의 증가는 바로 열의 증가로 콘덴서 절연에 스트레스로 작용하여 고장의 원인을 제공할 수 있다. 본 연구에서는 콘덴서에 인가되는 전압의 크기와 주파수를 변화시킬 경우 콘덴서에서 발생하는 열을 열화상 카메라로 측정하여 외부 및 내부에서의 온도분포를 분석하였다. 측정결과 전압과 주파수가 증가할 경우 콘덴서에서 열이 매우 높게 분포함을 확인할 수 있었다.