중학교 초임체육교사의 생활지도 경험에 대한 현상학적 연구

김승환 ( Kim¸ Seunghwan ),김민규 ( Kim¸ Minkyu ) 인하대학교 교육연구소 2021 교육문화연구 Vol.27 No.4

본 연구는 중학교 초임체육교사의 생활지도 경험과 교직생활에서의 변화는 무엇인지에 대해 심층적으로 탐색하고, 교육적 의미를 현상학적으로 도출하는데 목적이 있다. 이를 위해 중학교 초임체육교사 5인을 연구 참여자로 선정하여 개인별 심층면담을 진행하고 문자서술자료를 수집하였다. 본 연구의 결과는 다음과 같다. 생활지도의 중심현상은 총 4가지 범주, 12가지 주제 모음으로 분류되었다. 첫째, ‘편협하게 알고 있던 생활지도’ 는 예비체육교사 시절의 단편적 경험에 바탕을 둔 것으로 생활지도 개념과 중요성을 잘 알지 못했던 것으로 나타났다. 둘째, ‘학교 일상에서의 경험을 통해 습득한 생활지도’는 생활지도의 진정한 의미를 알게 되고 역량을 갖추며 발전하는 과정으로 나타났다. 셋째, ‘교과 지도와 함께하는 생활지도’ 는 체육수업을 생활지도의 무대로, 신체활동을 생활지도의 수단으로 활용하는 과정을 통해 체육수업이 생활지도가 될 수 있고, 생활지도가 체육교과의 또 다른 역할로 받아들여지는 등 상호 간의 선순환적 환류가 일어나는 것으로 나타났다. 넷째, ‘초임체육교사의 생활지도 경험을 통한 삶의 변화’ 는 생활지도 활동이 학생의 학교생활은 물론 교사에게도 전이되어 교사들의 삶도 변화되는 것으로 나타났다. 중학교 초임교사의 생활지도 경험과 의미 탐색을 통해 교사양성기관과 학교현장의 문제점과 개선점 등을 제시하였으며 온라인 교육이 일상적인 수업운영 방식이 되어가는 상황 속에서 생활지도 활동의 운영에 대한 후속연구가 필요하다는 점을 함께 제시하였다. The purpose of this study is to conduct in-depth examination on the experiences and changes on guidance for new middle school physical education teachers, and to phenomenologically deduce its educational meaning. For this study, five novice middle school physical education(PE) teachers were purposefully recruited. These participants took part in in-depth interview and provided documents for this study. The core phenomena of guidance were categorized into a total of 4 categories and 12 topics. First, ‘narrowly-known guidance’ was found to be based on fragmentary experiences while preparing to be a physical education teacher and it was determined that the concept and importance of guidance was unknown. Second, ‘guidance acquired through experiences at school’ was found to be the process of development by knowing the true meaning of guidance and gaining capacities. Third, ‘guidance with class lessons’ used physical education classes the stage for guidance and allowed physical education class serve as guidance through the process of using physical activities as the method for guidance, and that guidance has mutual circulation such as being received as a role other than physical education class. Fourth, it was found that ‘change of life through guidance experience of new physical education teachers’ changed not only the school life of students through guidance activities, but also spread to teachers, thus changing the lives of teachers as well. Through examinations on guidance experience and meaning of new middle school teachers, issues and areas for improvement among teacher fostering institutes and schools were presented, and it was also suggested that follow-up research on the operation of guidance activities are needed in this situation where online education is becoming the normal class operation method.

Molecular Identification of the Soybean Aphid on the Primary Host, Rhamnus davurica in Korea

Hyojoong Kim,Yeyeun Kim,Kim A. Hoelmer,Seunghwan Lee 한국응용곤충학회 2009 한국응용곤충학회 학술대회논문집 Vol.2009 No.05

The soybean aphid, Aphis glycines Matsumura 1917, is well known as a soybean pest in the world. Recently, it has been introduced to North America causing serious damage in U.S. As a cooperative research with USDA-ARS, we have investigated A. glycines in soybean fields, and also examined the colonies on the overwintering host Rhamnus davurica in order to find its natural enemies. It was generally reported that A. glycines has host alternation between the soybean, Glycine max (summer host) and the Dahurian buckthorn, Rhamnus davurica (winter host) in East Asia. However, it was very difficult to identify the soybean aphid, A. glycines, from R. davurica due to the co-existance of at least three Aphis species and the seasonal polymorphisms of each species (e.g, gynopara, ovipara, and male). For species identification, we tested 3 molecular markers, mitochondrial COI, COII, and nuclear EF1α, for 14 collected samples (7 samples from G. max and 7 samples from R. davurica). As a result, we found two different species, A. gossypii and other Aphis sp., are mixed together with A. glycines on R. davurica. We report the biology of A. glycines in Korea, and present species identification using molecular phylogenetic approach.

Population genetic structure of the soybean aphid from Asia and North America based on microsatellites

Hyojoong Kim,Minyoung Kim,Kim A. Hoelmer,Seunghwan Lee 한국응용곤충학회 2011 한국응용곤충학회 학술대회논문집 Vol.2011 No.05

The soybean aphid, Aphis glycines Matsumura, was recently introduced from Asia into North America (NA) where it has become a serious pest of soybeans. This invasive pest has rapidly spread throughout the midwestern United States and southern Canada since 2000. We examined 585 individuals obtained from 23 different collections in USA, Korea, China, and Japan using eight microsatellite loci. Based on analysis of multilocus genotype, gene diversity and number of alleles in NA were averaging 0.40 and 2.70, whereas in Asia averaging 0.55 and 4.32, respectively. The factorial correspondence analysis displayed that some Korean populations were closely related to the NA populations. Structure analysis resulted in two conspicuous clusters, NA and Asia, as the most likelihood number of clusters (K). Bayesian assignment tests revealed that Osan and Milyang populations were most likely assigned to the NA populations. Bottleneck test did not show significance of genetic bottleneck in all populations. We also discuss the invasive history of the soybean aphid in light of population genetics.

Acute upper limb ischemia in a patient with newly diagnosed paroxysmal atrial fibrillation

Kim, Dong Shin,Kim, Seunghwan,Min, Hyang Ki,Song, Chiwoo,Kim, Young Bin,Kim, Sae Jong,Park, Ji Young,Ryu, Sung Kee,Choi, Jae Woong Yeungnam University College of Medicine 2017 Yeungnam University Journal of Medicine Vol.34 No.2

Acute limb ischemia (ALI) due to an embolism is associated with high mortality rate and poor prognosis, and early diagnosis with prompt revascularization is required to reduce the risk of limb amputation or even death. The etiologies of ALI are diverse, and it includes an embolism from the heart and thrombotic occlusion of the atherosclerotic native vessels, stents, or grafts. An uncommon cause of ALI is acute arterial thromboembolism, and atrial fibrillation (AF) is the single most important risk factors for systemic thromboembolism. It is important to correctly identify the source of ALI for secondary prevention, as it depends on the underlying cause. Percutaneous transluminal angioplasty (PTA) has been proven to be a safe and effective treatment for focal atherosclerotic and thrombotic occlusive diseases of the aorta and its major extremity branches. Herein, we report on a 77-year-old female patient with acute upper limb ischemia, treated by PTA using a catheter-guided thrombectomy. He was newly diagnosed with paroxysmal AF (PAF) while evaluation the cause of his acute arterial thromboembolism. We recommend that cardiologists always consider PAF as a possible diagnosis even in patients without any history of AF under ALI because it is possible to develop thromboembolism in clinical practice.

Wearable, Ultrawide-Range, and Bending-Insensitive Pressure Sensor Based on Carbon Nanotube Network-Coated Porous Elastomer Sponges for Human Interface and Healthcare Devices

Kim, Seunghwan,Amjadi, Morteza,Lee, Tae-Ik,Jeong, Yongrok,Kwon, Donguk,Kim, Min Seong,Kim, Kyuyoung,Kim, Taek-Soo,Oh, Yong Suk,Park, Inkyu American Chemical Society 2019 ACS APPLIED MATERIALS & INTERFACES Vol.11 No.26

<P>Flexible and wearable pressure sensors have attracted a tremendous amount of attention due to their wider applications in human interfaces and healthcare monitoring. However, achieving accurate pressure detection and stability against external stimuli (in particular, bending deformation) over a wide range of pressures from tactile to body weight levels is a great challenge. Here, we introduce an ultrawide-range, bending-insensitive, and flexible pressure sensor based on a carbon nanotube (CNT) network-coated thin porous elastomer sponge for use in human interface devices. The integration of the CNT networks into three-dimensional microporous elastomers provides high deformability and a large change in contact between the conductive CNT networks due to the presence of micropores, thereby improving the sensitivity compared with that obtained using CNT-embedded solid elastomers. As electrical pathways are continuously generated up to high compressive strain (∼80%), the pressure sensor shows an ultrawide pressure sensing range (10 Pa to 1.2 MPa) while maintaining favorable sensitivity (0.01-0.02 kPa<SUP>-1</SUP>) and linearity (<I>R</I><SUP>2</SUP> ∼ 0.98). Also, the pressure sensor exhibits excellent electromechanical stability and insensitivity to bending-induced deformations. Finally, we demonstrate that the pressure sensor can be applied in a flexible piano pad as an entertainment human interface device and a flexible foot insole as a wearable healthcare and gait monitoring device.</P> [FIG OMISSION]</BR>

NF-κB–responsive miRNA-31-5p elicits endothelial dysfunction associated with preeclampsia via down-regulation of endothelial nitric-oxide synthase

Kim, Suji,Lee, Kyu-Sun,Choi, Seunghwan,Kim, Joohwan,Lee, Dong-Keon,Park, Minsik,Park, Wonjin,Kim, Tae-Hoon,Hwang, Jong Yun,Won, Moo-Ho,Lee, Hansoo,Ryoo, Sungwoo,Ha, Kwon-Soo,Kwon, Young-Guen,Kim, Youn American Society for Biochemistry and Molecular Bi 2018 The Journal of biological chemistry Vol.293 No.49

<P>Inflammatory cytokines, including tumor necrosis factor-α (TNFα), were elevated in patients with cardiovascular diseases and are also considered as crucial factors in the pathogenesis of preeclampsia; however, the underlying pathogenic mechanism has not been clearly elucidated. This study provides novel evidence that TNFα leads to endothelial dysfunction associated with hypertension and vascular remodeling in preeclampsia through down-regulation of endothelial nitric-oxide synthase (eNOS) by NF-κB–dependent biogenesis of microRNA (miR)-31-5p, which targets eNOS mRNA. In this study, we found that miR-31-5p was up-regulated in sera from patients with preeclampsia and in human endothelial cells treated with TNFα. TNFα-mediated induction of miR-31-5p was blocked by an NF-κB inhibitor and NF-κB p65 knockdown but not by mitogen-activated protein kinase (MAPK) and phosphatidylinositol 3-kinase inhibitors, indicating that NF-κB is essential for biogenesis of miR-31-5p. The treatment of human endothelial cells with TNFα or miR-31-5p mimics decreased endothelial nitric-oxide synthase (eNOS) mRNA stability without affecting <I>eNOS</I> promoter activity, resulting in inhibition of eNOS expression and NO/cGMP production through blocking of the functional activity of the eNOS mRNA 3′-UTR. Moreover, TNFα and miR-31-5p mimic evoked endothelial dysfunction associated with defects in angiogenesis, trophoblastic invasion, and vasorelaxation in an <I>ex vivo</I> cultured model of human placental arterial vessels, which are typical features of preeclampsia. These results suggest that NF-κB–responsive miR-31-5p elicits endothelial dysfunction, hypertension, and vascular remodeling via post-transcriptional down-regulation of eNOS and is a molecular risk factor in the pathogenesis and development of preeclampsia.</P>

An algorithm for evaluating time-related human reliability using instrumentation cues and procedure cues

Kim, Yochan,Kim, Jaewhan,Park, Jinkyun,Choi, Sun Yeong,Kim, Seunghwan,Jung, Wondea,Kim, Hee Eun,Shin, Seung Ki Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.2

The performance time of human operators has been recognized as a key aspect of human reliability in socio-complex systems, including nuclear industries. Because of the importance of the time factor, most existing human reliability assessment methods provide ways to quantify human error probabilities (HEPs) that are associated with the performance time. To quantify such kinds of HEPs, it is crucial to rationally predict the length of time required and time available and compare them. However, there have not been detailed guidelines that identify the critical cue presentation time or initial time of human performance, which is important to calculate the time information. In this paper, we introduce a time-related HEP calculation technique with a decision algorithm that determines the critical cue and its timing. The calculation process is presented with the application examples. It is expected that the proposed algorithm will reduce the variability in the time-related reliability assessment and strengthen the scientific evidence of the assessment process. The detailed description is provided in the technical report KAERI/TR-7607/2019.

Approximate Bayesian Computation Reveals the Origin of Introduction of the Soybean Aphid in North America

Hyojoong Kim,Kim A. Hoelmer,Seunghwan Lee 한국응용곤충학회 2016 한국응용곤충학회 학술대회논문집 Vol.2016 No.04

The soybean aphid, Aphis glycines Matsumura, was introduced about a decade ago from Asia into North America where it has become a serious pest of soybeans. This invasive pest has rapidly spread throughout the midwestern United States and southern Canada since 2000. We examined 689 individuals obtained from 23 different collections in USA, Korea, China and Japan for testing eight microsatellite loci. To estimate the relative likelihood of alternative introduction scenarios of the soybean aphid, an approximate Bayesian computation (ABC) was performed for microsatellite data as implemented in DIYABC. The ABC analysis tested for three scenarios (B1, B2, and B3) hypothesizing an introduction from one of the Asian countries. In this analysis, scenario B1 obtained the highest posterior probability ranging from 0.90 to 0.91 with a 95% CI of 0.81-0.99 and 0.88-0.94, which assumes an introduction from Korea. The ABC analysis revealed that one hypothetical scenario, which assumes an introduction of the soybean aphid into USA from Korea, was very robustly suggested than the other two scenarios (from China or Japan).

Carbon monoxide prevents TNF-α-induced eNOS downregulation by inhibiting NF-κB-responsive miR-155-5p biogenesis

Choi, Seunghwan,Kim, Joohwan,Kim, Ji-Hee,Lee, Dong-Keon,Park, Wonjin,Park, Minsik,Kim, Suji,Hwang, Jong Yun,Won, Moo-Ho,Choi, Yoon Kyung,Ryoo, Sungwoo,Ha, Kwon-Soo,Kwon, Young-Guen,Kim, Young-Myeong Nature Publishing Group 2017 Experimental and molecular medicine Vol.49 No.11

<P>Heme oxygenase-1-derived carbon monoxide prevents inflammatory vascular disorders. To date, there is no clear evidence that HO-1/CO prevents endothelial dysfunction associated with the downregulation of endothelial NO synthesis in human endothelial cells stimulated with TNF-α. Here, we found that the CO-releasing compound CORM-2 prevented TNF-α-mediated decreases in eNOS expression and NO/cGMP production, without affecting eNOS promoter activity, by maintaining the functional activity of the <I>eNOS</I> mRNA 3′-untranslated region. By contrast, CORM-2 inhibited MIR155HG expression and miR-155-5p biogenesis in TNF-α-stimulated endothelial cells, resulting in recovery of the 3′-UTR activity of <I>eNOS</I> mRNA, a target of miR-155-5p. The beneficial effect of CORM-2 was blocked by an NF-κB inhibitor, a miR-155-5p mimic, a HO-1 inhibitor and siRNA against HO-1, indicating that CO rescues TNF-α-induced eNOS downregulation through NF-κB-responsive miR-155-5p expression via HO-1 induction; similar protective effects of ectopic HO-1 expression and bilirubin were observed in endothelial cells treated with TNF-α. Moreover, heme degradation products, except iron and <I>N</I>-acetylcysteine prevented H<SUB>2</SUB>O<SUB>2</SUB>-mediated miR-155-5p biogenesis and eNOS downregulation. These data demonstrate that CO prevents TNF-α-mediated eNOS downregulation by inhibiting redox-sensitive miR-155-5p biogenesis through a positive forward circuit between CO and HO-1 induction. This circuit may play an important preventive role in inflammatory endothelial dysfunction associated with human vascular diseases.</P>

우분 연속식 혐기성 소화조의 에너지 생산량에 대한 열가수분해 전처리의 영향

김승환 ( Seunghwan Kim ),이창민 ( Changmin Lee ),김준현 ( Junhyeon Kim ),김재영 ( Jae Young Kim ) 한국폐기물자원순환학회 2023 젊은 연구자 학술연구발표회 Vol.20 No.0