심전도의 이해와 해석

변경민 대한내과학회 2022 대한내과학회 추계학술발표논문집 Vol.2022 No.1

간호 조직공정성 연구 동향 분석 - 국내 연구를 중심으로(2014~2023) -

변경민,양은희,유미 사단법인 한국안전문화학회 2024 안전문화연구 Vol.- No.35

본 연구는 병원 간호조직의 조직공정성에 관한 국내 연구 동향을 파악하고, 향후 조직공정성을 확보하기 위한 병원조직관리의 구체적인 전략 모색에 도움을 주고자 시도하였다. 검색 데이터베이스는 학술연구정보서비스(RISS), 한국학술정보(KISS), 누리미디어(DBpia), 국회도서관(Nanet)이었다. 검색어는 2014년에서 2023년 사이에 발표된 국문으로 '간호'와 '공정성' 또는 '조직공정성'이었으며 총 27편의 논문이 선정되었다. 조직공정성에 관한 동향 분석은 출판연도, 연구유형, 연구대상자, 조직공정성 측정도구 및 수준, 관련 변인을 확인하였다. 연구방법의 96.3%가 서술적 조사연구이고 3.7%가 2차 자료분석이었으며, 대상병원은 대부분 종합병원이었다. 조직공정성 측정도구는 Niehoff와 Moorman (1993), Moorman (1991), Price와 Muller (1986)의 도구가 대부분 사용된 것으로 나타났다. 간호사가 인식하는 조직공정성 정도는 세 개의 하위영역별로, 상호작용공정성, 분배공정성 및 절차공정성의 평균은 각각 2.56~3.70점, 2.40~3.46점, 2.50~3.67점 범위였다. 조직공정성은 직무만족, 조직몰입, 재직의도, 조직시민행동, 조직사회화, 신뢰, 직무배태성, 간호업무성과 등에 긍정적 영향을 주며 공정성이 부족할 경우 이직의도, 조직침묵, 직장 내 괴롭힘의 요인이 됨이 확인되었다. 본 연구분석은 조직공정성에 대한 새로운 연구 아이디어를 도출하는 데 유용한 데이터를 제공한다. 향후 다양한 연구방법, 한국형 조직공정성 측정도구 개발, 집단수준에서의 조직공정성 비교연구를 제언하며 간호조직의 인적자원관리 및 정책개선에 활용되기를 기대한다. This study aimed to identify trends in domestic research on organizational justice (OJ) in hospital nursing organizations and to explore specific strategies for hospital management to enhance OJ in the future. The databases searched included Research Information Service System (RISS), Korean studies Information Service System (KISS), DBpia, and National Assembly Library (Nanet). The search terms were 'nursing’ and 'justice' or ‘organizational justice’ in Korean, and the search period was from 2014 to 2023. A total of 27 papers were selected for analysis. Descriptive studies accounted for 96.3% of the research methods. The OJ measurement tools used were primarily those developed by Niehoff and Moorman (1993), Moorman (1991), and Price and Muller (1986). The levels of OJ in the three subareas-interactional, distribution, and procedural justice-ranged from 2.56 to 3.70, 2.40 to 3.46, and 2.50 to 3.67, respectively. OJ was found to positively affect job satisfaction, organizational commitment, intention to stay, organizational citizenship behavior, organizational socialization, trust, job embeddedness, and nursing performance. Conversely, a lack of OJ increased turnover intention, organizational silence, and workplace bullying. This study provides valuable data for generating new research ideas on OJ. It suggests the need for development of diverse research methods, the creation of a Korean-specific OJ measurement tool, and comparative studies on OJ at the group level. The findings are expected to contribute to improvements in human resource management and policy development within nursing organizations.

Fabrication of Nanoscale Plasmonic Structures and Their Applications to Photonic Devices and Biosensors

변경민,Woo Kyung Jung 대한의용생체공학회 2011 Biomedical Engineering Letters (BMEL) Vol.1 No.3

In this review, we explored the fabrication and application of various metallic nanostructures that support localized surface plasmons. Principles and unique characteristics for individual nanopatterning technologies were demonstrated and relevant discussion focused on the process cost, throughput, and possibilities of large-area patterning and mass production. As a potential use of the nanoscale plasmonic structures, several applications such as plasmonic light sources, photovoltaic devices, and localized surface plasmon resonance biosensors were investigated. In conclusion, true realization of such promising applications could be accomplished through an advance in nanofabrication techniques, together with a better understanding of the underlying fundamentals and a greater collaboration in a variety of fields.

Two Cases of Caseous Calcification of the Mitral Annulus

변경민,박승우,최진오,양지현,한혜진,손관협,김윤정 대한심장학회 2009 Korean Circulation Journal Vol.39 No.2

Caseous mitral annular calcification describes a heavy calcification of the mitral annulus with central liquefaction. This rare variant of mitral annular calcification may resemble an intracardiac tumor, abscess, vegetation, or thrombus, a resemblance that often leads to unnecessary surgery. Typical echocardiographic findings include a large, round, bright echogenic mass with a central echolucent area. It is known to have a benign clinical outcome, and it is thus managed conservatively. Because this entity is not well known and has only rarely been described, we report two cases of mitral annular calcification encountered at our institution. The first patient was an elderly woman with exertional dyspnea who was found to have a solitary pulmonary nodule on plain chest radiography. This was determined to represent caseous calcification of the mitral annulus. The other patient was an elderly woman who had a history of cerebral embolic infarction. She did not have an intracardiac thrombus, but she did have caseous mitral annular calcification. Both patients were managed conservatively. Caseous mitral annular calcification describes a heavy calcification of the mitral annulus with central liquefaction. This rare variant of mitral annular calcification may resemble an intracardiac tumor, abscess, vegetation, or thrombus, a resemblance that often leads to unnecessary surgery. Typical echocardiographic findings include a large, round, bright echogenic mass with a central echolucent area. It is known to have a benign clinical outcome, and it is thus managed conservatively. Because this entity is not well known and has only rarely been described, we report two cases of mitral annular calcification encountered at our institution. The first patient was an elderly woman with exertional dyspnea who was found to have a solitary pulmonary nodule on plain chest radiography. This was determined to represent caseous calcification of the mitral annulus. The other patient was an elderly woman who had a history of cerebral embolic infarction. She did not have an intracardiac thrombus, but she did have caseous mitral annular calcification. Both patients were managed conservatively.

Development of Nanostructured Plasmonic Substrates for Enhanced Optical Biosensing

변경민 한국광학회 2010 Current Optics and Photonics Vol.14 No.2

Plasmonic-based biosensing technologies have been successfully commercialized and applied for monitoring various biomolecular interactions occurring at a sensor surface. In particular, the recent advances in nanofabrication methods and nanoparticle syntheses provide a new route to overcome the limitations of a conventional surface plasmon resonance biosensor, such as detection limit, sensitivity, selectivity, and throughput. In this paper, optical and physical properties of plasmonic nanostructures and their contributions to a realization of enhanced optical detection platforms are reviewed. Following vast surveys of the exploitation of metallic nanostructures supporting localized field enhancement, we will propose an outlook for future directions associated with a development of new types of plasmonic sensing substrates.

간호 조직공정성 연구 동향 분석 - 국내 연구를 중심으로(2014~2023)

변경민(Gyeong Min Byeon),양은희(Eun Hee Yang),유미(Mi Yu) 사단법인 한국안전문화학회 2024 안전문화연구 Vol.35 No.-

본 연구는 병원 간호조직의 조직공정성에 관한 국내 연구 동향을 파악하고, 향후 조직공정성을 확보하기 위한 병원조직관리의 구체적인 전략 모색에 도움을 주고자 시도하였다. 검색 데이터베이스는 학술연구정보서비스(RISS), 한국학술정보(KISS), 누리미디어(DBpia), 국회도서관(Nanet)이었다. 검색어는 2014년에서 2023년 사이에 발표된 국문으로 '간호'와 '공정성' 또는 '조직공정성'이었으며 총 27편의 논문이 선정되었다. 조직공정성에 관한 동향 분석은 출판연도, 연구유형, 연구대상자, 조직공정성 측정도구 및 수준, 관련 변인을 확인하였다. 연구방법의 96.3%가 서술적 조사연구이고 3.7%가 2차 자료분석이었으며, 대상병원은 대부분 종합병원이었다. 조직공정성 측정도구는 Niehoff와 Moorman (1993), Moorman (1991), Price와 Muller (1986)의 도구가 대부분 사용된 것으로 나타났다. 간호사가 인식하는 조직공정성 정도는 세 개의 하위영역별로, 상호작용공정성, 분배공정성 및 절차공정성의 평균은 각각 2.56~3.70점, 2.40~3.46점, 2.50~3.67점 범위였다. 조직공정성은 직무만족, 조직몰입, 재직의도, 조직시민행동, 조직사회화, 신뢰, 직무배태성, 간호업무성과 등에 긍정적 영향을 주며 공정성이 부족할 경우 이직의도, 조직침묵, 직장 내 괴롭힘의 요인이 됨이 확인되었다. 본 연구분석은 조직공정성에 대한 새로운 연구 아이디어를 도출하는 데 유용한 데이터를 제공한다. 향후 다양한 연구방법, 한국형 조직공정성 측정도구 개발, 집단수준에서의 조직공정성 비교연구를 제언하며 간호조직의 인적자원관리 및 정책개선에 활용되기를 기대한다. This study aimed to identify trends in domestic research on organizational justice (OJ) in hospital nursing organizations and to explore specific strategies for hospital management to enhance OJ in the future. The databases searched included Research Information Service System (RISS), Korean studies Information Service System (KISS), DBpia, and National Assembly Library (Nanet). The search terms were 'nursing’ and 'justice' or ‘organizational justice’ in Korean, and the search period was from 2014 to 2023. A total of 27 papers were selected for analysis. Descriptive studies accounted for 96.3% of the research methods. The OJ measurement tools used were primarily those developed by Niehoff and Moorman (1993), Moorman (1991), and Price and Muller (1986). The levels of OJ in the three subareas-interactional, distribution, and procedural justice-ranged from 2.56 to 3.70, 2.40 to 3.46, and 2.50 to 3.67, respectively. OJ was found to positively affect job satisfaction, organizational commitment, intention to stay, organizational citizenship behavior, organizational socialization, trust, job embeddedness, and nursing performance. Conversely, a lack of OJ increased turnover intention, organizational silence, and workplace bullying. This study provides valuable data for generating new research ideas on OJ. It suggests the need for development of diverse research methods, the creation of a Korean-specific OJ measurement tool, and comparative studies on OJ at the group level. The findings are expected to contribute to improvements in human resource management and policy development within nursing organizations.

In Vitro Biocompatibility Test of Multi-layered Plasmonic Substrates with Flint Glasses and Adhesion Films

김낙현,변경민,황서영,전상범,변경민 한국광학회 2014 Current Optics and Photonics Vol.18 No.2

Since in vitro neural recording and imaging applications based on a surface plasmon resonance (SPR) technique have expanded dramatically in recent years, cytotoxicity assessment to ensure the biosafety and biocompatibility for those applications is crucial. Here, we report the cytotoxicity of the SPR substrate incorporating a flint glass whose refractive index is larger than that of a conventional crown glass. A high refractive index glass substrate is essential in neural signal detection due to the advantages such as high sensitivity and wide dynamic range. From experimental data using primary hippocampal neurons, it is found that a lead-based flint glass is not appropriate as a neural recording template although the neuron cells are not directly attached to the toxic glass. We also demonstrate that the adhesion layer between the glass substrate and the gold film plays an important role in achieving the substrate stability and the cell viability.

전두엽 인지기능에 따른 정신분열병 하위유형 연구

이남훈, 민성길, 오경자, 송현주, 변경민, 고려원, 김태경, 장지흠 대한신경정신의학회 2003 신경정신의학 Vol.42 No.5

Objectives:This study was designed to identify frontal lobe dysfunctions of schizophrenic group and to classify into subtypes accordingly. Methods:Four neuropsychological tests (Wisconsin Card Sorting Test (WCST), Word Fluency Test, Ruff Figural Fluency Test and Grooved Pegboard Test) were administered to 93 schizophrenia or schizophreniform patients diagnosed with the Korean version of SCID. Ten measures (WCST Total Number of Errors, WCST Number of Categories Completed, WCST Conceptual Level Responses, WCST Trials to Complete First Category, WCST Perseverative Responses, GPT Dominant Hand RT, GPT Nondominant Hand RT, Letter Fluency raw score, Category Fluency raw score, RFFT Total Unique Designs) from the four tests were selected by statistical procedure. Latent factors embedded in the frontal lobe function of schizophrenic patients were extracted from the factor analysis, and hierarchical and K-means clustering procedures were used to identify subtypes. To examine the differences among the subtypes, demographic variables, K-WAIS and PANSS were used. Results:① The subjects in this study showed significant impairments in the four neuropsychological tests. ② Through factor analysis, three factors were extracted: Conceptualization, Motor and Fluency. ③ Three cluster solution was considered optimal by cluster analysis. The preserved cluster (n=42) comprised of patients who showed relatively high function in all three factors. This group showed relatively higher function than the other two clusters. However, even the performance of the preserved cluster was 1SD below the norm of the normal people. The conceptualization deficit cluster (n=25) comprised of patients with deficit in conceptualization function. This group was characterized by the clinical symptoms of poor impulse control and active social avoidance suggesting a deficit in the ability to actively organize stimuli utilizing the feedback from the external environment. And finally, the fluency deficit cluster (n=19) showed impairment in fluency. This group was characterized by impairments in the use of abstract-symbolic thinking and the ability to pay attention to relevant stimuli suggesting a severe deficit in the efficiency and flexibility of information withdrawal. These three subtypes didn’t differ significantly in age, duration of illness and current dosage of antipsychotics. However, the three groups differed significantly in years of education, IQ and on five items of PANSS. Conclusion:This study shows that schizophrenia can be characterized by frontal lobe dysfunctions and divided into three subtypes according to the profile of the frontal lobe dysfunctions. These neurocognitive heterogeneity of schizophrenia, not related to age, duration of illness and dosage of antipsychotic, suggest that different strategies need to be developed in diagnosing and planning rehabilitation programs for schizophrenc patients

표면 플라즈몬 공명 바이오센서에서 산화된 은 박막이 감도 특성에 미치는 영향

정우경,변경민 경희대학교 공학연구소 2009 레이저공학 Vol.20 No.-

We investigated the effect of silver oxidization on the sensitivity of surface plasmon resonance (SPR) biosensors. When a silver film is exposed to oxygen during the fabrication process of a thin-film based SPR sensor chip, silver oxide layer formed on the sensor surface may lead to a significant change in SPR characteristics. The results calculated by rigorous-coupled wave analysis presented that the sensitivity can be improved by more than 4 times, compared with the case of an inoxidized silver film.

포스터 전시 발표 순서 : 순환기 ; 대동맥궁 혈전 Aortic arch thrombus (초)

김정혁,변경민,손관협,한혜진,이미래,김은영,최진오,박승우 대한내과학회 2008 대한내과학회지 Vol.75 No.1S