ISM 교재 구조화법을 이용한 교과서와 교사의 역학 개념 비교

최관순,김범기 한국교원대학교 과학교육연구소 1997 청람과학교육연구논총 Vol.7 No.1

본 연구의 목적은 고등학교 물리 Ⅱ 교과 내용 중 역학 개념의 구조를 체계적으로 밝혀 효율적인 물리 교수-학습에 관한 시사점을 얻는데 있다. ISM 교재 구조 분석을 위한 컴퓨터 프로그램을 이용하여 고등학교 물리 Ⅱ 교과서의 역학 개념 구조와 교사들이 파악하고 있는 역학 개념의 구조를 분석하여 비교하였다. 본 연구에서 교과서의 개념 구조와 교사의 개념 구조를 비교분석한 결과, 교사들이 갖고 있는 역학 개념의 구조는 전체적이기보다는 부분적인 경향이 강하므로, 효율적인 물리 교수-학습을 위해서는 통합적이고 체계적인 역학 개념의 구조 이해가 요구된다. The purpose of this study was to find the structure of the mechanics concepts in high-school physics textbooks and to provide meaningful information for effective instruction. The structure of the mechanics concepts in high-school physics texts and the teachers' conceptual structure of mechanics were defined by using the ISM(Interpretative Structural Modeling) program and then compared with each other. As a result of this study, the concepts in the texts were found to be related to one another, but teachers did not appreciate the fact that the concepts were related across the units. For the effective instruction-learning, teachers have to comprehend the relations between the individual concepts within the structure of text.

무전해법에 의해 생성된 비정질 Ni_(87.0)P_(13.0) 박막의 부식특성 : 염 수용액과 pH를 중심으로 under salt and pH

최순범,김현구 조선대학교 기초과학연구소 2003 自然科學硏究 Vol.26 No.-

We were carried out to measure corrosion potential corrosion current density. corrosion rate and corrosion resistance on polarization curves in variation temperatures for the amorphous N_157 P film. The results were particularly examined to identify the influences affecting the corrosion potential including various conditions such as temperatures concentrations and pH. The potentiodynamics parameters of the corrosion were obtained using a Tafel plot The charge transfer coefficient (α) was determined from the Tafel equation and the α was 0.99 in 7×10^-3 sodium chloride aqueous solution

남북상사중재위원회 운영상의 문제점과 활성화방안

최석범,박근식,김태환,김재학,박선영 한국중재학회 2007 중재연구 Vol.17 No.1

The commercial relationship between South and North Korea is defined under the concept of economic relation and cooperation. To resolve any dispute that can arise from the trade and investment relations between South and North Korea, 'Agreement on the Procedures to Resolve Commercial Arbitration of South-North Korea' came into force in August 2003. Commercial Arbitration Committee of South-North Korea will be organized as the member lists of the committee were exchanged in July 2006 between South and North Korea. This committee must become a central system to settle the trade and investment disputes between South and North Korea. North Korea's Foreign Economic Arbitration Act was enacted to provide the foreign investors with the safe measures in their investments such as dispute resolution. But this Act can not dispute the trade and investment disputes between South and North Korea. The purpose of this paper is to contribute to the activation of arbitration between South and North Korea by studying Commercial Arbitration Committee of South-North Korea introduced by Agreement on the Procedures to Resolve Commercial Arbitration of South-North Korea and Agreement on the Construction and Operation of Commercial Arbitration Committee of South-North Korea and finding the problems and solutions of Commercial Arbitration Committee of South-North Korea.

Zigbee를 이용한 무선 실시간 전광판

金範錫,金星坤,韓必熙,朴樹榮,李宜宣,崔祐榮 明知大學校 産業技術硏究所 2009 産業技術硏究所論文集 Vol.28 No.-

In general, LED display system displays the fixed text in ROM. In this paper, we propose the wireless real-time LED display system in which the text can be easily displayed in any text color and display mode by users And the system can be set up in any place by using Zigbee communication.

Lutembacher 증후군 환자 증례 보고

김성범,서정주,곽철훈,김상민,이보라,민선경,황은구,김용인,조욱현,최석구 인제대학교 2008 仁濟醫學 Vol.29 No.-

Lutembacher's syndrome is rare combination of mitral stenosis (MS) and atrial septal defect (ASD). The hemodynamic interplay between the MS and ASD leads to wide variation of clinical presentation. Here we describe a 43-year-old female with Lutembacher's syndrome and tricuspid regurgitation with pulmonary hypertension, who underwent direct closure of ASD and tricuspid valvuloplasty successfully. We also reviewed other literatures in an effort to increase awareness of this condition.

강우시 불포화 성토사면의 안정해석

심태섭,기완서,김선학,최순범 朝鮮大學校 建設技術硏究所 2005 建設技術硏究 Vol.25 No.1

This study conducted the indoor slope model test which reproduces the rainfall after building up the artificial slope by considering the construction condition of the actual slope in order to understand the characteristics of the change of the quantitative value such as the pore water pressure, dangerous rainfall volume etc, in accordance with the superior seepage of the unsaturated banking slope in the time of rainfall. With this result. the change of the pore water pressure caused by the rainfall seepage, the estimation of time for the slope degradation and of the dangerous rainfall volume, the change of the seepage line, the characteristics of the change in safety rate by using the simplified Janbu's method (1968) have been analyzed and studied. The abstract for this study is as follows: 1. Since the soil within the slope is in the unsaturated state in the early period after the rainfall started, it is started at the pore water pressure of the negative value(-) in the measuring point around the outer layer and of the positive value(+) in the deep area. As the rainfall permeates into the slope, it become saturated, therefore, the pore water pressure also increases which lead to the degradation. After that, it tends to be gradually diminished. The pore water pressure had shown relatively considerable increase right before the degradation, and 50~150 minutes before the slope degradation happens, it had shown sharp increase. 2. The safety rate is sharply decreased when reached the slope layer after being started its activity at the slope line area; the time to the complete degradation of the slope layer by being the 1.0 for the safety rate after the degradation at the slope line area started is displayed short as the rainfall intensity strengthens, and longer as the slope inclination becomes gentler. Likewise, the time to the complete degradation from the slope line to the slope layer is relatively short for the slope built by the 8M than by the one built by the SW.

Effects of Hormones and Elicitors on Plant Growth of Rice-type Tartary Buckwheat

Sun-Hee Woo, Beom Joo Choi, Timnoy Salitxay, Beom Sun Park, Kwang Jin Chang, Cheol Ho Park 충북대학교 농업과학기술연구소 2022 農業科學硏究 Vol.38 No.2

This study was performed to determine the effects of various concentrations of two hormones (IAA and GA3) and four elicitors (SA, MJ, ALF and MMA) on plant growth of rice-type Tartary buck- wheat in a greenhouse. Rice-type Tartary buckwheat seeds showed a germination rate of over 98%, except for a treatment of IAA 1000 ppm showing a low germination rate of 76.7%. Plant height was the highest at GA3 1000 ppm (33.4 cm) 30 days after germination while IAA 1000 ppm was lowest (14.4 cm) that was lower than the control (21.8 cm). The number of leaves was in the order of IAA 100 ppm (12.9)>GA3 1000 ppm (10.2)>IAA 10 ppm (9.2). The fresh weight and dry weight at 80 days after germination were the highest at 9.6 g (FW) and 1.0 g (DW) per plant in IAA 100 ppm treatment, respectively. The fresh weight per plant was higher in 1 mL (3.97 g) of MJ and 1 mL (3.60 g) of ALF than in the control group (3.52 g). Dry weight per plant was also higher in MJ 1 mL (0.52 g) and ALF 1 mL (0.44 g) than the control group (0.26 g).

Multiple epidermal cysts which developed after gold acupuncture

( Sun Young Choi ),( Eun Jung Ko ),( In Pyeong Son ),( Woo Sun Jang ),( Kui Young Park ),( Kapsok Li ),( Beom Joon Kim ),( Seong Jun Seo ),( Myeung Nam Kim ),( Chang Kwun Hong ) 대한피부과학회 2012 대한피부과학회 학술발표대회집 Vol.64 No.1

Adiponectin receptor agonist AdipoRon decreased ceramide, and lipotoxicity, and ameliorated diabetic nephropathy

Choi, Sun Ryoung,Lim, Ji Hee,Kim, Min Young,Kim, Eun Nim,Kim, Yaeni,Choi, Beom Soon,Kim, Yong-Soo,Kim, Hye Won,Lim, Kyung-Min,Kim, Min Jeong,Park, Cheol Whee Elsevier 2018 clinical and experimental Vol.85 No.-

<P><B>Abstract</B></P> <P><B>Background</B></P> <P>Adiponectin is known to take part in the regulation of energy metabolism. AdipoRon, an orally-active synthetic adiponectin agonist, binds to both adiponectin receptors (AdipoR)1/R2 and ameliorates diabetic complications. Among the lipid metabolites, the ceramide subspecies of sphingolipids have been linked to features of lipotoxicity, including inflammation, cell death, and insulin resistance. We investigated the role of AdipoRon in the prevention and development of type 2 diabetic nephropathy.</P> <P><B>Methods</B></P> <P>AdipoRon (30 mg/kg) was mixed into the standard chow diet and provided to <I>db/db</I> mice (<I>db</I> + AdipoRon, <I>n</I> = 8) and age-matched male <I>db/m</I> mice (<I>dm</I> + AdipoRon, <I>n</I> = 8) from 17 weeks of age for 4 weeks. Control <I>db/db</I> (<I>db</I> cont, <I>n</I> = 8) and <I>db/m</I> mice (<I>dm</I> cont, <I>n</I> = 8) were fed a normal diet of mouse chow.</P> <P><B>Results</B></P> <P>AdipoRon-fed <I>db/db</I> mice showed a decreased amount of albuminuria and lipid accumulation in the kidney with no significant changes in serum adiponectin, glucose, and body weight. Restoring expression of adiponectin receptor-1 and -2 in the renal cortex was observed in <I>db/db</I> mice with AdipoRon administration. Consistent up-regulation of phospho-Thr<SUP>172</SUP> AMP-dependent kinase (AMPK), peroxisome proliferative-activated receptor α (PPARα), phospho-Thr<SUP>473</SUP> Akt, phospho-Ser<SUP>79</SUP>Acetyl-CoA carboxylase (ACC), and phospho-Ser<SUP>1177</SUP> endothelial NO synthase (eNOS), and down-regulation of protein phosphatase 2A (PP2A), sterol regulatory element-binding protein-1c (SREBP-1c), and inducible nitric oxide synthase (iNOS) were associated within the same group. AdipoRon lowered cellular ceramide levels by activation of acid ceramidase, which normalized ceramide to sphingosine-1 phosphate (S1P) ratio. In glomerular endothelial cells (GECs) and podocytes, AdipoRon treatment markedly decreased palmitate-induced lipotoxicity, which ultimately ameliorated oxidative stress and apoptosis.</P> <P><B>Conclusions</B></P> <P>AdipoRon may prevent lipotoxicity in the kidney particularly in both GECs and podocytes through an improvement in lipid metabolism, as shown by the ratio of ceramide to sphingosines, and further contribute to prevent deterioration of renal function, independent of the systemic effects of adiponectin. The reduction in oxidative stress and apoptosis by AdipoRon provides protection against renal damage, thereby ameliorating endothelial dysfunction in type 2 diabetic nephropathy.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Superfluous ceramide via decrease in acid ceramidase activity causes lipotoxicity. </LI> <LI> Adiponectin and adiponectin receptors potentially increase ceramidase activity. </LI> <LI> AdipoRon ameliorated renal lipotoxicity by AdipoR1-AMPK and AdipoR2-PPARα pathway. </LI> <LI> AdipoRon is a promising tool for treatment of diabetic nephropathy in type 2 DM. </LI> </UL> </P> <P><B>Graphical Abstract</B></P> <P>[DISPLAY OMISSION]</P>

A combination trial of intradermal radiofrequency and hyaluronic acid filler for the treatment of nasolabial fold wrinkles: A pilot study

Choi, Sun Young,Lee, Yong Hee,Kim, Hyuk,Koh, Hyun-Ju,Park, Sun-Young,Park, Won-Seok,Bae, Il-Hong,Park, Kui Young,Kim, Beom Joon Informa Healthcare 2014 Journal of cosmetic and laser therapy Vol.16 No.1

<P><I>Background:</I> Within the last few years, hyaluronic acid (HA) fillers and radiofrequency (RF) devices have shown significant promise for skin rejuvenation. But the effects of HA only lasted for a relatively short duration. Therefore, we tried a new combination therapy of intradermal RF and HA filler. <I>Objective:</I> To evaluate the clinical efficacy of combination therapy of intradermal RF and HA filler for nasolabial fold (NLF) wrinkle reduction. <I>Materials and methods:</I> Ten Korean female volunteers with mild to severe NLFs were enrolled. In the control group, five subjects were treated with HA filler alone. In the experimental group, the other five subjects were treated with intradermal RF prior to HA filler. Efficacy was evaluated based on the change on the Wrinkle Severity Rating Scale (WSRS) and the Global Aesthetic Improvement Scale (GAIS) from baseline. <I>Results:</I> At 12 and 24 weeks after treatment, the experimental group showed significantly greater improvement in mean WSRS score compared to the control group. And two (40%) of the five patients in the experimental group achieved ‘very much improved’ and two (40%) showed ‘much improved’ at 12 weeks after treatment. <I>Conclusions:</I> Intradermal RF treatment prior to HA filler injection may provide synergistic and long-lasting effects for the reduction of NLF wrinkles.</P>