• Korean Journal of Occupational Health Nursing
• /
• v.26 no.4
• /
• pp.236-246
• /
• 2017

Purpose: This study aimed to investigate the relationships among job characteristics, knowledge sharing, organizational culture, and organizational commitment in occupational health nurses (OHN) and clinical nurses (CN) to identify factors that might influence organizational commitment. It aimed to contribute to the improvement of knowledge management in health care organizations, including industrial workplaces and hospitals. Methods: A convenience sample of 188 nurses, specifically 100 OHN and 88 CN, was selected. Data were analyzed with descriptive statistics, t-tests, correlation coefficients, and multiple regression analysis. Results: OHNs had a significantly higher education level and current work experience; higher proportion of participants with contract employment status, day work shift, less turnover experience, good lifestyle; and higher scores on organizational culture ($3.3{\pm}0.61$) and organizational commitment ($3.1{\pm}0.60$). Additionally, the correlations among organizational commitment, job characteristics, knowledge sharing, and organizational culture ware higher (r=.38~.57) among OHNs as compared to those among CNs. Further, the organizational commitment of OHNs was significantly influenced by knowledge sharing, organizational culture, working hours, and salary ($R^2=.32$), while that of CNs was influenced by organizational culture and life event stress ($R^2=.11$). Conclusion: There is a need to develop measures to enable nurses to contribute to the improvement of knowledge management in health care organizations as major human resources, by including interventions for the major factors leading to between-group differences in organizational performance.

• Journal of Korea Society of Industrial Information Systems
• /
• v.26 no.6
• /
• pp.17-34
• /
• 2021

As knowledge management is recognized as an important factor for organizational performance, organizations are increasing their investment in knowledge management policies and technologies. The purpose of this study is to suggest positive and negative causes on the intention to share knowledge through a using knowledge management system(KMS) and to suggest the effect of organizational sharing climate. Research models and hypotheses were presented through previous studies, and 417 samples were obtained through the survey for employees of organizations that adopted a KMS. As a result of the analysis, usefulness and ease of use of the KMS had a positive effect on the intention to share knowledge, and task conflict and ambiguity had a negative effect. The knowledge sharing climate was found to be an antecedent for the technology acceptance model and task stress. In addition, task stress moderated the effect of usefulness and ease of use with the intention to share knowledge using KMS. The results suggested the direction to be pursued at the organizational level for the continuous use of KMS.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
• /
• v.25 no.1
• /
• pp.68-75
• /
• 2012

This paper presents a comparative analysis of the parallel operation of different switches in a DC/DC converter. In high power applications, multi-switch PWM power conditioners may be preferred despite a higher component count, due to the absence of low frequency filters, reduced switching losses and fault tolerance. The paper demonstrates how current sharing (CSH) and time sharing (TSH) lead to the reduction of switching stress in the parallel operation of switches in any converter. The solutions proposed in this study can be applied on different scales to other power conditioners for DC/DC converter systems. Discussions of the concepts, hypotheses and computer simulations are verified by 1 kW experimental results.

• The Transactions of the Korean Institute of Power Electronics
• /
• v.12 no.2
• /
• pp.165-173
• /
• 2007

This paper introduces a new current sharing technique to Interleaved Boost Converter (IBC) using carrier slope control. The IBC is able to boost the input voltage and operates at higher current levels and has various advantages over a single power module. However, how to balance the current each module is still important problem. To solve this problem, the proposed technique can distribute the power and load current equally based on master-slave current sharing method. Unlike a conventional approach, this technique can be extended even though the current stress of switching components at slave modules is significantly smaller than that of the master module. The simulation and the experimental results are presented to show the validity.

• The Journal of the Korea Contents Association
• /
• v.17 no.12
• /
• pp.25-33
• /
• 2017

An increase of the interaction speed can lead to the problem of over-relations. Due to psychological and temporal burdens caused by the excessive relationship, users feel fatigue and users are avoiding using SNS. SNS fatigue and SNS anxiety is regarded as SNS stress related to the side effects caused by the SNS use. This study is to approach negative view which is SNS stress and find out causes of stress from the over-relation of interaction. This study used total of 261 samples from Facebook users. As a results, all hypothesis are accepted using SEM(Structural Equation Model). Information sharing and communication have positive effect on social interaction overload and it causes technostress. The results of this study show that SNS characteristics occurs technostress. This study is significant in that it examines that the features of SNS have negative results.

• Journal of Korean Tunnelling and Underground Space Association
• /
• v.18 no.5
• /
• pp.377-387
• /
• 2016

In recent, in case that the underpass is constructed by trenchless method, its stability increases by reinforcing steel pipe with re-bar and mortar after propulsion into the ground to form pipe-roof. Therefore, it can be predicted that the integrated pipe-roof decreases the stress acting on the underpass by sharing load. In this study, to analyze the effect of integrated pipe-roof and behavior of stress around underpass, experimental tests for the rectangular and arch cross section of the underpass are performed using soil chamber. As a result, stress and strain acting on the underpass decrease due to sharing load by integrated pipe-roof. This phenomenon is more pronounced by increasing the stiffness of pipe-roof. Furthermore it can be expected that cross-section of underpass can be economically designed.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.27 no.2
• /
• pp.29-35
• /
• 2013

For the purpose of designing and applying optimum surge protection, one of the essential points is to take into account the energy coordination between cascaded surge protective devices(SPDs) and it is important to obtain an acceptable sharing of the energy stress between two cascaded SPDs. In this paper, in case of two voltage-limiting SPDs connected in parallel, the amount of splitting impulse current and energy that flow through each SPDs is investigated as a function of the protective distance. As a result, the energetic coordination between cascaded SPDs is strongly dependent on the voltage protection level of SPDs and the protective distance. It was confirmed that the sharing of the energy between two cascaded SPDs and the limited voltage levels are appropriate when the voltage protection levels of both upstream and downstream SPDs are the same.

• Journal of Power Electronics
• /
• v.12 no.4
• /
• pp.643-653
• /
• 2012

An interleaved DC/DC converter with series-connected transformers is presented to implement the features of zero voltage switching (ZVS), load current sharing and ripple current reduction. The proposed converter includes two half-bridge converter cells connected in series to reduce the voltage stress of the switches at one-half of the input voltage. The output sides of the two converter cells with interleaved pulse-width modulation are connected in parallel to reduce the ripple current at the output capacitor and to achieve load current sharing. Therefore, the size of the output chokes and the capacitor can be reduced. The output capacitances of the MOSFETs and the resonant inductances are resonant at the transition instant to achieve ZVS turn-on. In addition, the switching losses on the power switches are reduced. Finally, experiments on a laboratory prototype (24V/40A) are provided to demonstrate the performance of the proposed converter.

• Journal of East-West Nursing Research
• /
• v.27 no.1
• /
• pp.32-42
• /
• 2021

Purpose: The purpose of this study was to identify factors influencing nursing performance of clinical nurses. Methods: This was a descriptive study involving 172 nurses who worked for 6 months or longer at one general hospital in B City. The data analysis was conducted with t-test, ANOVA, Scheffé test, Pearson's correlation coefficients, and stepwise multiple regression. Results: Nursing performance of participants positively correlated with job stress (r=.16, p=.033). The factors affecting nursing performance were total clinical experience (β=.37 p<.001), salary (β=.19, p=.028), and job stress (β=.13, p=.045). These variables had a 27.2% variance to explain nursing performance. Conclusion: Based on these results, administrative and financial support are required for the development of a clinical career program, including the differentiation of salary systems of clinical nurses. There is also a need to develop and implement job stress management and coping programs.

• Journal of KIISE:Computing Practices and Letters
• /
• v.14 no.9
• /
• pp.906-910
• /
• 2008

As the mobile environment becomes widely used, there is a growth on the concern about recognizing and sharing user context. Sharing context makes the interaction between human more plentiful as well as helps to keep a good social relationship. Recently, it has been applied to some messengers or mobile applications with sharing simple contexts, but it is still required to recognize and share more complex and diverse contexts. In this paper, we propose a context-aware messenger that collects various sensory information, recognizes representative user contexts such as emotion, stress, and activity by using dynamic Bayesian networks, and visualizes them. It includes a modular model that is effective to recognize various contexts and displays them in the form of icons. We have verified the proposed method with the scenario evaluation and usability test.