• KIEE International Transactions on Electrophysics and Applications
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• 제11C권4호
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• pp.120-126
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• 2001

For the past five years, Inha University has been observing the electric fields produced by cloud-to-ground return strokes. This paper presents the summary of most recent results. Statistics on the zero-to-peak rise time, the zero-to-zero crossing time and the amplitude ratio of the second peak in the opposite polarity to the first peak were examined. The radiation electric fields produced by distant cloud-to-ground return strokes were substantially same pattern. The first return stroke field starts with a slowly increasing front and rises abruptly to peak. The rising portions of the electric fields produced by cloud-to-ground return strokes last 1 $mutextrm{s}$ to a few $mutextrm{s}$. The mean values of the zero-to-peak rise times of electric fields were 5.72 $mutextrm{s}$ and 4.12 $mutextrm{s}$ for the positive and the negative cloud-to-ground return strokes, respectively. The mean of the zero-to-zero crossing time for the positive return strokes was 29.48 $mutextrm{s}$ compared with 38.54 $mutextrm{s}$ for the negative return strokes. The depths of the dip after the peak of return stroke electric fields also have the dependence on the polarity of cloud-to-ground return stroke, and the mean values for the positive and negative cloud-to-ground return strokes were 33.55 and 28.19%, respectively.

• Asian Pacific Journal of Cancer Prevention
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• 제16권2호
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• pp.641-646
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• 2015

Breast cancer (BC) is potentially a traumatic stressor which may be associated with negative outcomes, such as post-traumatic stress disorder (PTSD) or positive changes, such as post-traumatic growth (PTG). This study aims to identify the core issues of BC related PTSD, PTG and psychological distress by interrogating the literature in BC survivors. We have also highlighted issues related to the assessment, diagnosis and clinical management of PTSD and PTG. The authors systematically reviewed studies published from 1985 to 2014 pertaining to PTSD, psychological distress and PTG in BC survivors with particular attention paid to incidence rates and causative factors. Multiple studies intimated that women with BC have evidence of PTSD at the initial stages of diagnosis, whereas PTG develops once patients undergo treatment. Early diagnosis and treatment of PTSD/PTG is paramount from literature review but the previously mentioned relationship between PTSD and PTG in BC patients could not be verified. It is evident from the literature that a small percentage of BC patients experience PTSD, while the majority experience PTG after BC diagnosis and treatment. Future research should include prospective studies focusing on high-risk patients, causative factors and the development of psychological interventions.

• Journal of KIEE
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• 제11권1호
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• pp.32-40
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• 2001

This paper presents the detailed statistics on radiation field signatures associated with multiple-intracloud lightning discharges. A transient signal recording system was used to measure the electric and magnetic fields produced by lightning flashes. The measurements were made in th summers of 1995 through 1999, and the location of the observation station was in Inchon on the coast of the Yellow Sea in Korea(37$^{\circ}$25'N, 126$^{\circ}$ 39'E). Most of lightning flashes typically contains between two and five strokes. The individual intracloud stork radiation fields were the bipolar pulse. On the average, the ratio of the peak of the second stroke to the first stroke peak was 75.1$\pm$40.1% for the negative, and a fraction of the subsequent stroke peaks were higher than the first stroke peak. The greater the number of the subsequent stroke order, less time separations between strokes were produced. The mean of the depth of the dip was 81.2$\pm$27.9% for the positive polarity and 75.9$\pm$24.4% for the negative. The depth of the dip increased for the positive bipolar pulses and decreased for the negative as the number of the stroke order increased.

• Journal of Microbiology and Biotechnology
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• 제17권2호
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• pp.287-296
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• 2007

A Lactobacillus paraplantarum strain producing a bacteriocin was isolated from kimchi using the spot-on-the lawn method and named L. paraplantarum C7 [15]. The bacteriocin, paraplantaricin C7, was found to inhibit certain Lactobacillus strains, including L. plantarum, L. pentosus, and L. delbrueckii subsp. lactis. It also inhibited Enterococcus faecalis, yet did not inhibit most of the other LAB (lactic acid bacteria) tested. The maximum level of paraplantaricin C7 activity was observed under the culture conditions of $25^{\circ}C$ and a constant pH of 4.5. Paraplantaricin C7 retained 90% of its activity after 10 min of treatment at $100^{\circ}C$ and remained stable within a pH range of 2-8. Based on a culture supernatant, paraplantaricin C7 was purified by DEAE-Sephacel column chromatography and $C_{18}$ reverse-phase HPLC. SDS-PAGE and activity staining were then conducted using the purified paraplantaricin C7, and its molecular mass determined to be about 3,800 Da. The 28 N-terminal amino acids from the purified paraplantaricin C7 were determined, and the structural gene encoding paraplantaricin C7, ppnC7, was cloned by PCR using degenerate primers based on the N-terminal amino acid sequence. The nucleotide sequences for ppnC7 and other neighboring orfs exhibited a limited homology to the previously reported plantaricin operon genes. Paraplantaricin C7 is a novel type II bacteriocin containing a double glycine leader sequence.

• 의학교육논단
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• 제24권2호
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• pp.79-92
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• 2022

With increasing demands for medical care by society, the medical system, and general citizens and rapid changes in doctor's awareness, the competencies required of doctors are also changing. The goal of this study was to develop a doctor's competency framework from the patient's perspective, and to make it the basis for the development of milestones and entrustable professional activities for each period of medical student education and resident training. To this end, a big data analysis using topic modeling was performed on domestic and international research papers (2011-2020), domestic newspaper articles (2016-2020), and domestic social networking service data (2016-2020) related to doctor's competencies. Delphi surveys were conducted twice with 28 medical education experts. In addition, a survey was conducted on doctor's competencies among 1,000 citizens, 407 nurses, 237 medical students, 361 majors, and 200 specialists. Through the above process, six core competencies, 16 sub-competencies, and 47 competencies were derived as subject-oriented doctor's competencies. The core competencies were: (1) competency related to disease and health as an expert; (2) competency related to patients as a communicator; (3) competency related to colleagues as a collaborator; (4) competency related to society as a health care leader (5) competency related to oneself as a professional, and (6) competency related to academics as a scholar who contributes to the development of medicine.

• 디지털융복합연구
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• 제15권11호
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• pp.155-165
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• 2017

본 연구는 개인의 역할 외 행동을 보다 구체적으로 살펴보기 위해, 조직시민행동을 조직 및 개인의 두 가지 차원으로 구분하였다. 또한, 이를 이끌어 낼 수 있는 투입요인으로 임파워링 리더십을 선정하고, 신뢰의 매개역할을 살펴보았다. 이를 밝히기 위해, 대구 경북의 제조업 종사자를 중심으로 설문조사를 수행하였고, 구조방정식을 통해 가설을 검증하였다. 연구 결과, 임파워링 리더십은 개인 지향 및 조직지향 조직시민행동에 유의한 정의 영향을 미치는 것으로 나타났다. 또한 신뢰는 임파워링 리더십과 개인 및 조직 지향 조직시민행동의 관계를 부분매개 하는 것으로 나타났다. 이러한 연구결과는 조직 내 조직시민행동을 유발할 수 있는 구체적인 실행 지침이 될 것이며, 나아가 조직시민행동의 연구의 영역을 확장시킬 것이다.

• 한국조리학회지
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• 제20권4호
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• pp.239-252
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• 2014

본 연구는 학교조직에서 영양교사의 서번트 리더십이 조리원의 임파워먼트 및 조직몰입에 미치는 영향을 확인하기 위하여 대구광역시 초 중 고등학교에 근무하는 조리원 288명을 연구대상으로 조사대상으로 선정하여 설문조사를 수행하였고 수집된 자료는 SPSS 프로그램을 이용하여 빈도분석, 신뢰도 검증, 상관관계 및 다중회귀분석을 실시하였다. 가설을 검증한 결과, 영양교사의 서번트 리더십은 조리원의 임파워먼트에 정(+)의 영향을 미칠 것이다 라는 가설1과 영양교사의 서번트 리더십은 조리원의 조직몰입에 정(+)의 영향을 미칠 것이다 라는 가설2는 부분 채택되었고, 조리원의 임파워먼트는 조직몰입에 정(+)의 영향을 미칠 것이다 라는 가설3은 채택되었다. 따라서 학교급식의 질을 좌우하는 조리원이 자신의 업무를 자율성과 창의성에 바탕을 두고 수행할 수 있도록 영양교사가 서번트 리더십을 발휘해야 할 것이다. 서번트 리더로서 자신의 역할을 수행하기 위해 영양교사는 서번트 리더십 함양을 위한 다양한 교육과 연수를 지속적으로 받을 필요성이 있을 것이다.

• 대한화학회지
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• 제66권3호
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• pp.243-250
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• 2022

이 연구의 목적은 북한 김정은 시대의 고급중 1 '화학' 교과서의 시각자료를 분석하여 북한 화학 교육을 이해하는데 도움이 되는 기초 자료로 제공하기 위함이다. 북한 고급중 1 '화학' 교과서 단원별 시각자료 유형과 기능을 분석하고, 남한의 2015 개정 교육과정에 따른 '화학 I' 교과서의 시각자료와 비교하였다. 선행 연구를 바탕으로 하여 분석틀을 구성하여 시각자료를 분석한 결과는 다음과 같다. 첫째, 북한 교과서에서 사용된 시각자료의 유형은 사진과 삽화가 가장 많고, 그래프가 가장 적게 사용되었다. 둘째, 북한 교과서에서 사용된 시각자료의 기능은 탐구적 기능과 예시적 기능이 많고, 장식적 기능이 가장 적게 사용되었다. 셋째, 북한과 남한의 교과서 시각자료는 유형과 기능이 큰 차이를 보이지 않았다. 이 연구 결과는 북한 화학 교육 이해에 도움을 줄 수 있을 것이다.

• 아태비즈니스연구
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• 제14권2호
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• pp.119-139
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• 2023

Purpose - This study is the first field study about the insurance market in North Korea. By analysing the information and the data collected from the visit to North Korea, we introduced the most recent change on the insurance market in North Korea and analyzed the impact of the change of economic policy on the insurance market. This study may enhance the understanding the current situation and provide expectations on the future of the insurance market in North Korea. Design/methodology/approach - This study is based on the field study doen in 2018 to Pyeong Yang, the capital of North Korea, The most information was collected from the legal documents, news papers and academic reports. Findings - During his regime from the year of 2012, Kim Jong Eun, the Supreme Leader of North Korea, initiated the drastic change in economic renovation policy in North Korea by shifting the economic system from the commodity economy to the market economy. Due to the policy, the insurance market in North Korea became marginally privatized and the market of life insurance contracts is expected to be increased if North Korea may resolve the political conflicts between North Korea and the United States and its allies in Asia mainly due to its nuclear testing. Research implications or Originality - Until now, very few studies have been done regarding the financial market in North Korea, especially about the insurance market. Our study provides unique information on the insurance market in North Korea because all the information and its implications are based on the field study in 2018.

• 대한간호학회지
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• 제54권2호
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• pp.119-138
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• 2024

Purpose: This study aimed to identify research trends related to emotional leadership among nurse managers by conducting a systematic literature review and meta-analysis. This study sought to derive insights that could contribute to improving emotional leadership in nursing practice. Methods: A systematic review and meta-analysis were conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) and Meta-Analysis Of Observational Studies in Epidemiology (MOOSE) guidelines. Databases including PubMed, Cumulative Index to Nursing and Allied Health Literature, Scopus, Web of Science, Research Information Sharing Service, Koreanstudies Information Service System, Korean Medical Database, KoreaMed, ScienceON, and DBpia were searched to obtain papers published in English and Korean. Literature searches and screenings were conducted for the period December 1, 2023 to December 17, 2023. The effect size correlation (ESr) was calculated for each variable and the meta-analysis was performed using the statistical software SPSS 29.0, R 4.3.1. Results: Twenty-five (four personal, six job, and fifteen organizational) relevant variables were identified through the systematic review. The results of the meta-analysis showed that the total overall effect size was ESr = .33. Job satisfaction (ESr = .40) and leader-member exchange (ESr = .75) had the largest effect size among the job and organizational-related factors. Conclusion: Emotional leadership helps promote positive changes within organizations, improves organizational effectiveness, and increases member engagement and satisfaction. Therefore, it is considered an important strategic factor in improving organizational performance.