• Child Health Nursing Research
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• v.20 no.2
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• pp.123-131
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• 2014

Purpose: This study was conducted to examine the effects of simulation education integrated with problem based learning (SIM-PBL) on clinical competency and self-efficacy in post operation nursing care for children. Methods: This study was a quasi-experimental design. Thirty six students in the third year of a 4-year baccalaureate nursing program were recruited conveniently and assigned to the control or intervention groups using time difference. Students were all in a pediatric nursing clinical practicum. The control group received the regular clinical practicum in a hospital setting. For the intervention group, a SIM-PBL education replaced 150 minutes of their clinical practicum. Results: The intervention group showed greater improvement in two areas of clinical competency compared with the control group; physical assessment (t= 3.019, p=.005) and post operation advice (t=2.428, p=.021). However, no statistically significant differences in improvement in any areas of self-efficacy were found between two groups. Conclusion: The results indicate that the SIM-PBL education is effective in improving some areas of clinical competence, but not self-efficacy in post operation nursing care for children. Further study is needed to develop SIM-PBL programs for various clinical topics and evaluate the effectiveness on the learning outcomes.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2017.11a
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• pp.1279-1279
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• 2017

본 연구는 기업의 기술 유출 및 특허 침해라는 정보 보안 문제 발생 시, 브랜드 기업의 시장 지위에 따라 가해 및 피해 기업에 대한 소비자 반응이 달라질 수 있다는 점에서 착안하였다. 같은 예로 대한민국 국가대표 축구팀이 약팀과의 경기에서 졌을 때, 일부는 경기력을 비난하지만, 일부는 선수 부상, 날씨, 시차 적응 등 상황이 불리했음에도 잘 싸웠다고 평가하는 경우가 있다. 이처럼 어떤 부정적 결과 대해 사람들은 각자 다른 평가를 한다는 맥락에서 기술 유출과 특허 침해와 같은 정보 보안 문제가 발생한 기업에 대해 소비자 인식과 태도는 다르게 나타날 수 있다. 이와 같이 소비자 관점에서 기대와 실제가 불일치한 지각과정을 설명하는 심리적 메카니즘에는 동화-대조 효과가 있다. 본 연구는 기술 유출 및 특허 침해에서 일어나는 소비자 동화-대조 효과를 심리학의 귀인 이론을 통해 설명하고, 이 때 사람들의 귀인 방향이 브랜드 명성이 높을 때와 낮을 때, 기술 유출 경로가 내부자일 때와 내부자가 아닐 때에 나타나는 소비자 반응을 확인하고자 한다. 또한, 이로써 나타나는 소비자 반응을 귀인 이론의 방향성과 메커니즘을 통해 설명하려 한다. 동화-대조 효과에서 나타나는 귀인의 방향성과 소비자 반응 관계를 분석한다면, 추후 기업의 R&D와 기술 개발 전략, 지적 재산권 침해 이후 사태에 대한 대응과 수습에 가이드를 제공할 수 있을 것이라 기대한다.

• Journal of the Korea Convergence Society
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• v.13 no.5
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• pp.219-228
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• 2022

In order to improve audit quality, it is essential to understand the occurrence of disagreement between auditors and managers, and this study aims to analyze the impact of Business Strategies on audit risk and accounting audit delay. To this end, we conducted an empirical analysis using sample 2,910 firm-year data from 2018 to 2020 of KOSPI-listed and KOSDAQ-listed companies. The results of the empirical analysis of this study are as follows. First, compared to the companies of defender type, prospectors can expand audit procedures for new products, R&D costs, and intangible assets, and increase audit delays due to disagreement between managers and auditors. Second, compared to KOSPI-listed companies, the prospectors in KOSDAQ are more likely to have lower financial reporting quality, which further increases audit delays. The results of this study analyzed whether a company's Business Strategy affects the possibility of disagreement between an auditor and a company, and verified whether there is a difference in the audit report lag by stock market. The results of this study show that auditors' strong duty of care is needed for the companies of prospector type with high audit risk, and it is meaningful to present reinforced audit systems and specific guidelines for the companies of prospector type through the definition of prospector type. It also enables the expansion of research to identify the relationship between non-financial factors and audit risks that make up the companies of prospector type.

• The Korean Journal of Applied Statistics
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• v.22 no.2
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• pp.249-260
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• 2009

Various methods have been suggested in developing the useful leading indicators to predict the actual realizations when time laps exist between policy plannings and future events. The recent economic crisis could have been relived if the information necessary to respond to the future evolutionary process is provided in advance. As the relations between the financial variables and the real economic activity become unstable because of the changes in the financial environment, this study attempts to estimate the capabilities of various internal and external term spreads in predicting the future business trend, followed by comparison and evaluation.

• The Korean Journal of Applied Statistics
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• v.28 no.3
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• pp.457-465
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• 2015

The long lasting world-wide recession and low economic progress have made it more important to predict future economic behavior. Accordingly, it is of interest to explore useful leading indicators, correlated with policy targets, to predict future economic growth. This study attempts to develop a model to evaluate the performance of consumer survey results from Statistics Korea to predict future economic activities. A statistical model is formulated and estimated to generate predictions by utilizing consumer expectations. The prediction is found improved in the distant future and consumer expectations appear to be a useful leading indicator to provide information of future real growth.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.35 no.1
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• pp.87-92
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• 2012

This study examines the relationship between R&D investment and subsequent outputs of the research activity. Usually, there is some time difference between the production of research outputs, such as academic papers and application or registration of patents, and the investment of R&D expenditure. The time lag for producing this kind of research outputs should be considered to evaluate the performance of research activity exactly. The purpose of this study is to identify time lag effect between the times of input and output of a R&D activity and to derive the degree of time lag using the data set of a long term R&D program supported by Korean government. A modified Almon model is suggested to identify the time lag effect between input and output of research activities performed by this program. Time-series cross-section data from 16 research centers between 2001 and 2009 are used to find time lag effect.

• The Korean Journal of Applied Statistics
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• v.26 no.3
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• pp.401-411
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• 2013

This study investigates the controversial chickens-eggs dilemma and empirically performs statistical tests to examine if there exists a causality between them. Granger and Hsiao tests are applied to both level and stationary variables to identify the lead-lag relationships. Each of these test is found to have the robust result where the causality runs from eggs to chickens; in addition, the explanatory power of one variable in variations of the other appears to remain time invariant. The outcome is proved to be valid as the hypothesis test for no structural change in their relationship fails to be rejected.

• Korean Journal of Remote Sensing
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• v.35 no.6_1
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• pp.895-905
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• 2019

Commercial Unmanned Aerial Vehicle (UAV) image processing software products currently used in the industry provides camera calibration information and block bundle adjustment accuracy. However, they provide mapping accuracy achievable out of input UAV images. In this paper, the quality of mapping is calculated by using orientation parameters from UAV image processing software. We apply the orientation parameters to the digital photogrammetric workstation (DPW) for verifying the reliability of the mapping quality calculated. The quality of mapping accuracy was defined as three types of accuracy: Y-parallax, relative model and absolute model accuracy. The Y-parallax is an accuracy capable of determining stereo viewing between stereo pairs. The Relative model accuracy is the relative bundle adjustment accuracy between stereo pairs on the model coordinates system. The absolute model accuracy is the bundle adjustment accuracy on the absolute coordinate system. For the experimental data, we used 723 images of GSD 5 cm obtained from the rotary wing UAV over an urban area and analyzed the accuracy of mapping quality. The quality of the relative model accuracy predicted by the proposed technique and the maximum error observed from the DPW showed precise results with less than 0.11 m. Similarly, the maximum error of the absolute model accuracy predicted by the proposed technique was less than 0.16 m.

• Journal of Broadcast Engineering
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• v.15 no.5
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• pp.607-616
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• 2010

The methods developed to measure visual fatigue so far are quite few and lack of validity, and more importantly, they do not figure out the complex properties of the visual fatigue. The purpose of the research was to analyze the factors comprising the visual fatigue and to develop the method to measure it validly. The results are summarized as follows. First, we found that the 3D visual fatigue was comprised of four independent factors (visual stress, eye pain, body pain and image blurring factors). Second, we developed 29 items that measure four factors of 3D visual fatigue. Finally, the watching duration and binocular disparities affected the visual fatigue as had been expected. These results imply that the developed method does measure the three dimensional fatigue validly.

• Explosives and Blasting
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• v.26 no.1
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• pp.39-48
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• 2008

Using Electronic Detonators which is well known for controlling vibration, we have been studying Orchestra Blasting Method, OBM, for many years to transform the unpleasant blasting sound to favorable sound in some job-sites such as tunneling and bench blasting which have to been taken place near some structures needed great care. In this study, we focus on rhythmical sense. First, we acquired individual wave from a shot. With the program named the Program Blasting Wave, PBW, it was analyzed and found that its best delay time was 34ms and 50ms was acceptable. Also, delay time was fitted into the music which was accepted after analyzing the rhythm. As a result, the blasting sound along with the music felt comfortable as if the music was played with base drum.