조선 후기 가사의 道統 구현 양상과 그 의미

김동연 경북대학교 대학원 2017 국내석사

朝鲜后期歌辞的道统具现方式与其意蕴 金東演 韩国国立庆北大学校 大学院 国语国文学科 (指导教授:郑羽洛) 本论文关注朝鲜后期歌辞中非文学体系的道统之文学化,并探讨道统的具体表现方式,以此来阐明其意蕴。本文所选定的研究对象作品均具体表现了道统,所以本文将所选定的作品称之为“道统具现歌辞”。 道统具现歌辞自18世纪起,至20世纪期间,一直被士大夫阶层,其中有多被士族所享有。所以,为了阐明道统具现歌辞的特征,我们需要关注其作家层─士族。 关于歌辞中道统具体表现的方式,最初的作家均跟随其所属的学派的共同特征。但是,之后又根据作家的个人情况出现了个人化。到20世纪初,道统的具体表现受“意味时代谈论”的影响,个性逐渐减弱,以至于扩展到民族这一整体。 我可以从“历时”和“共时”两个方面来进行探讨。先看“历时”的话,因为当代的社会背景和由其引发的社会主要谈论,我们可以确认各时代的作家以何种目的来具体表现道统。18世纪初期、18世纪中期到19世纪后期、20世纪初期这三个时期的道统具现歌辞分别以不同的方式表现的道统。 再看“同时”的话,处于相同时期的作家,即便他们所具有相同学派的道统意识,其道统具体表现方式也会因为其他原因有所不同。因为道统是作家根据其所属学派形成的,比如统一学派的作家,即使他们提出相似的道统,根据其他原因,他们所提出的道统也会有不同的表现方式。换而言之,具有相同道统意识的作家,哪怕他们为了相同的目的而创作歌辞,然而根据个人或社会的原因,也会出现“同时”的差异。这一点格外值得注意。

페닐보론산을 포함하는 역오팔 수화젤 포도당센서의 제작

김동연 세종대학교 대학원 2018 국내석사

There is growing interest in continuous glucose monitoring systems (CGMS) for diabetes patients, and inverse opal photonic gels (IOPG), IOPG is expected to be the core technology of CGMS because it can observe blood glucose level by reversible reflective color change without power supply units . In this study, we demonstrate a glucose sensing hydrogel which can observe blood glucose at physiological pH was prepared by intramolecular charge stabilization of phenylboronate by quaternary amine, and hydrogel was fabricated by using PBA with fluorine for improving sensitivity. Using 2-Hydroxyethyl methacrylate (HEMA) as inverse opal photonic hydrogel main building block monomer, (3-Acrylamidopropyl)trimethylammonium chloride (APTA) and 2-(methacryloyloxy)ethyltrimethylammonium chloride (MOETA) as two different charge stabilizer were, were copolymerized with 3-acrylamidophenyl boronic acid (3-AAPBA) which can detected glucose by reversible binding reaction between glucose and boronate. Also, acrylamide (AAm) and 3-fluoro-4-acrylamido-phenylboronic acid (3F4AAPBA) were copolymerized for the purpose of improving sensitivity. The hydrogel was fabricated by Directed Enhanced Evaporative colloidal assembly (DEECA) method. The inverse opal photonic hydrogel, including APTA or MOETA, showed increased sensitivity at pH 7.4, which is physiological pH. The inverse opal photonic hydrogel containing 3F4AAPBA were further improved in sensitivity and hydrogel showed red, green, and blue reflection color at physiological blood glucose levels. 당뇨병 환자를 위한 지속적인 혈당 관찰 시스템 (CGMS, continuous glucose monitoring systems)에 대한 관심이 증가하고 있으며, 역오팔 광결정 수화젤 (IOPG, inverse opal photonic gels)이 가역적인 반사색의 변화에 의해 혈당 수준을 관찰할 수 있기 때문에 IOPG가 CGMS의 핵심기술로 전망 받고 있다. 본 연구에서는 4차 아민에 의한 phenylboronate의 분자 내 전하 안정화를 통해 생리적 pH에서도 혈당을 관찰할 수 있는 IOPG를 제작하였고, 보다 좋은 감응도를 위해 불소가 달린 PBA를 이용하여 수화젤을 제작하였다. 역오팔 광결정 수화젤의 주 형성 단량체인 2-Hydroxyethyl methacrylate (HEMA), 두 개의 서로 다른 전하 안정제인 (3-Acrylamidopropyl)trimethylammonium chloride (APTA)와 2-(methacryloyloxy)ethyltrimethylammonium chloride (MOETA)를 glucose와 boronate의 가역적인 결합 반응으로 혈당을 감지할 수 있는 3-acrylamidophenylboronic acid (3-AAPBA)와 공중합 하였다. 또한 감응성 개선을 목적으로 acrylamide (AAm) 와 3-fluoro-4-acrylamido- phenylboronic acid (3F4AAPBA)를 공중합 하였다. 수화젤은 ‘Directed Enhanced Evaporative colloidal assembly’ (DEECA) 방법으로 제작하였다. APTA와 MOETA를 포함하여 제작한 역오팔 광결정 수화젤은 생리적 pH인 pH 7.4에서 감응도가 증가 된 것을 확인하였고, 3F4AAPBA를 포함하는 수화젤에서 감응도가 더욱 개선되었고, 생리적 혈당 수치에서 RGB (red, green, blue)의 반사색이 나타나게 제작하였다.

Optical emission spectroscopy를 이용한 플라즈마 공정진단 및 변동성에 따른 가상계측 모델링

김동연 연세대학교 대학원 2023 국내석사

대규모 반도체 제조 산업에서는 비용과 시간, 생산성 저하 등의 문제로 모든 제품을 검사 또는 계측할 수가 없으며 sampling 결과에 의존하여 불확실성의 잠재 위험 요인을 안고 있다. 이러한 문제를 해결하기 위한 근본 개선책으로 플라즈마를 이용한 실시간 진단 및 예측 시스템 구축에 대한 방법론을 제시하였다. 본 연구에서는 Optical Emission Spectroscopy (OES)를 이용한 Plasma-enhanced atomic layer deposition (PE-ALD) 공정의 실시간 모니터링 및 진단을 수행하였다. 플라즈마 변수를 측정하고 진단하는 다양한 방법 중 OES는 다른 방법 대비 시설 투자 비용이 크지 않으며 플라즈마 간섭이 없어 효과적으로 플라즈마 상태를 진단할 수 있다. PE-ALD 공정 중 발생되는 emission light를 OES를 통해 수집하였고, 변수 분석 및 Neural network 기반의 두께 예측 시스템을 구현하였다. RF power, Pressure, Gas와 같은 가능한 많은 공정 변수를 modeling에 포함하여 예측 정확도를 향상시킬 수 있으나 여기에는 많은 물리적 지식과 해석의 요구되어 시스템의 복잡성이 증가할 수 있다. 따라서 본 연구에서는 변수 분석을 통하여 상관 관계가 높은 인자와 OES data를 이용하여 예측 modeling을 수행하였다. 또한, 높은 예측 정확도를 위해 공정 변수를 최적화하여 Cycle-to-cycle 변동성(Variability)이 개선된 플라즈마 data를 사용하였다. PE-ALD 공정은 여러 cycle의 반복으로 박막이 증착되기 때문에 cycle간의 일정한 플라즈마 특성 유지가 전체 uniformity 유지 측면에서 중요한 부분이며 공정 성능에도 영향을 미치기 때문이다. 플라즈마의 산포 개선을 위해 Ar 농도 변화에 따른 O2 플라즈마 특성 변화를 모니터링 하였고, Ar 농도가 증가할수록 cycle variation 이 개선됨을 확인하였다. 제시된 예측 시스템은 실제 계측 없이도 공정의 이상유무를 진단할 수 있을뿐 아니라 증착 두께를 예측할 수 있는 virtual metrology로써의 활용 가능성도 있음이 검증되었다. 본 연구의 방법론은 PE-ALD 공정뿐만 아니라 Etching, Ashing, Implantation 등 플라즈마를 사용하는 다른 공정의 응용에도 확장하여 적용할 수 있다. Plasma is widely used in etching, deposition, ashing, and ion implantation processes in the manufacturing processes of semiconductor and display devices. Recently, the role of plasma in semiconductor processes is becoming important because the pattern with high step coverage and aspect ratio is required as the semiconductor process is fined. In particular, plasma-enhanced atomic layer deposition (PE-ALD) is recently highlighted with excellent deposition uniformity compared to chemical vapor deposition (CVD) and physical vapor deposition (PVD) technologies. The density and the state of plasma during the process cannot always remain constant and can be changed by process variables and unpredictable process random fluctuations. Since this can cause yield drop and decrease in productivity, the methodology for monitoring and diagnosing the abnormality of plasma in real time during the process is essentially required. In this thesis, the plasma monitoring using the optical emission spectroscopy (OES) in PE-ALD equipment to analyze the characteristics of the process variables. Based on the diagnosis results, the optimal process variable values were proposed, and a process performance predictive model is introduced by analyzing the correlation between variables. Based on the modeling results, the modeling output for the final deposited thickness can be predicted by the initial deposition rate, which can be developed as a virtual metrology system application. In addition, by applying this proposed virtual metrology scheme for the advanced process control (APC), it is possible to estimate the process output without whole wafer measuring, thereby improving the time and cost losses and the wafer-to-wafer variation in the semiconductor manufacturing industry.

Therapeutic role of eucalyptol in counteracting diabetic nephropathy and retinopathy

김동연 한림대학교 2021 국내박사

Recently, the incidence of adult diseases such as diabetes has continued to increase due to increased national income, socioeconomic development, improved living standards, and extended life expectancy, along with the prevalence of chronic diabetes complications. Complications from diabetes are largely classified as microvascular complications such as nephropathy, retinopathy, and neuropathy, as well as large vascular complications such as coronary artery disease and cerebrovascular disease. Among them, kidney disease is one of the three major complications of diabetes, along with retinopathy and neuropathy, and is the most common cause of end-stage renal failure. Diabetic nephropathy can occur in both type 1 and type 2 diabetics and occurs in 30-40% of type 1 diabetics. In the early stages of diabetic nephropathy, it does not show any symptoms, but as the disease progresses, it easily becomes tired, urinary volume increases than usual, and the rate of tetrahedral filtration decreases and proteinuria is characterized. The emergence of kidney disease, a complication in diabetic patients, has increased the mortality rate by 3.5 times and annual medical expenses by 22 times, making it a serious problem not only for patients but also for society. Major symptoms of diabetic nephropathy include accumulation of intracranial cells (podocyte). As such, kidney damage caused by tetrahedral sclerosis and atrophy causes dialysis and transplantation due to continuous filtration of the kidneys, and once damaged kidney function is not recovered normally, diabetes nephropathy requires treatment that slows progress. Diabetic retinopathy is a condition in which microvascularization of the retina is damaged and is one of the major causes of blindness worldwide. The prevalence of diabetic retinopathy in patients diagnosed with diabetes is reported as high as 11-19 percent, according to the latest diabetic retinopathy epidemiological study in South Korea. Major symptoms of diabetic retinopathy include loss of photoreceptors and retinal pigment epithelial cells, lumen of the endothelial cell basilar, loss of pericyte, microvascular flow, cell reduction of capillaries, and neovascular development. As such, damage to the retina causes each layer of cells in the retina to fail to function properly, eventually causing vision loss. Therefore, the ultimate goal of this study is to explore substances that have recently been highlighted as a serious disease using the efficacy of food products and to identify the preventive effects of diabetes complications through the inhibition mechanism of diabetic complications. 최근 우리나라에서는 사회 경제적 발달로 인한 국민소득의 증가, 그리고 이에 따른 생활수준의 향상, 평균수명의 연장 등으로 인해 당뇨병과 같은 성인병의 발병률이 지속적으로 증가하고 있으며 이와 더불어 만성 당뇨병으로 인한 합병증의 유병률 또한 증가하는 추세이다. 당뇨병으로 인한 합병증은 크게 신장병증, 망막병증, 신경병증 등의 미세혈관 합병증과 관상동맥질환이나 뇌혈관 질환과 같은 대혈관 합병증으로 분류된다. 그 중에서도 신장병증은 망막병증, 신경병증과 더불어 당뇨병의 3대 합병증 중 하나이며, 말기 신부전증의 가장 흔한 원인 질환이다. 당뇨병성 신장병증은 제 1형 당뇨병 환자나 제 2형 당뇨병 환자에게서 모두 발병할 수 있으며 제 1형과 2형 당뇨병 환자의 30-40%에서 발생한다. 당뇨병성 신장병증 초기에는 별다른 증상을 보이지 않지만 점차 병이 진행되면서 쉽게 피곤하고, 소변량이 평소보다 늘어나는 증상이 나타나며, 사구체 여과율이 감소하고 단백뇨가 특징적으로 나타나게 된다. 당뇨병 환자에서 합병증인 신장병증이 나타나게 되면 사망률이 3.5배 증가하고 연간 의료비 또한 22배 까지 증가하여 환자 뿐 아니라 사회적으로도 중대한 문제로 대두되고 있다. 당뇨병성 신장병증의 주된 증상으로는 세뇨관 경화 및 사구체 상피세포 (Podocyte) 소실을 들 수 있는데 세뇨관 경화증에서는 근위세뇨관상피세포의 세포외기질 (Extracellular Matrix;ECM)의 축적, 사구체 기저막 (Glomerular basement membrane; GBM)의 비후 및 사구체 podocyte의 감소 및 세뇨관-간질(tubulointerstitial)에 ECM 축적 및 세뇨관 기저막의 비후와 같은 증상을 나타내게 된다. 이와 같이 사구체 경화증 및 세뇨관 위축에 의한 신장 손상이 발생하게 되면 신장의 지속적인 여과기능 저하로 투석 및 이식이 필요한 상황을 초래하게 되며, 한번 손상된 신장의 기능은 정상적으로 회복되지 않기 때문에 당뇨병성 신장병증이 유발되면 진행속도를 늦추는 치료가 필요하게 된다. 당뇨병성 망막병증은 망막의 미세혈관이 손상되는 질환으로 전 세계적으로 중요 실명 원인 중 하나이다. 한국인에서 최신 당뇨망막병증 역학연구에 결과들에 따르면 당뇨병으로 진단받은 환자들에서 당뇨망막병증 유병률은 약11-19%까지 보고되고 있다. 당뇨병성 망막병증의 주된 증상으로는 시세포 (Photoreceptor) 및 망막색소상피세포 (Retinal pigment epithelial cell) 소실, 내피세포 기저막의 비후, 혈관주위세포 (Pericyte) 소실, 미세혈관류, 모세혈관의 세포감소, 신생혈관 발생 등을 포함한 망막 혈관계의 이상이 나타나게 된다. 이와 같이 망막의 손상이 발생하게 되면 망막의 각 세포층이 제 기능을 하지 못하여 결국 시력손실을 야기하게 된다. 따라서 본 연구에서는 식품 중의 유효성분을 이용하여 최근 심각한 질환으로 부각 되고 있는 당뇨병성 신장병증 및 망막병증 억제효과를 가지는 물질을 탐색하고, 생리활성 물질을 활용하여 당뇨 합병증으로 발생하는 신장병증 및 망막병증의 억제 기전 규명을 통한 당뇨합병증의 완화 효과를 규명하는 것이 궁극적인 목적이다.

중학교 영어교과서 듣기활동과 전국영어듣기평가 문항 비교분석

김동연 충북대학교 2020 국내석사

The purpose of this study is to analyze listening activities of English textbooks published based on 2009 Revised National Curriculum of English and National English Listening Comprehension Tests in middle school. For this study, 410 listening activities in five different textbooks of Middle School English 3 and 180 questions of National English Listening Comprehension Tests were selected and compared in the light of 1) four achievement criteria and nineteen communicative materials that presented in the 2009 Revised National Curriculum of English, 2) question types of the listening activities and the tests. The findings are as follows. First, the frequency of achievement criteria was similar between two analytical subjects in the criteria presented in 2009 Revised National Curriculum of English as well as the two most frequency between them were used to grasp detailed information and main ideas. The frequency of the communicative materials presented in 2009 Revised National Curriculum of English was much closer to personal daily life and the school life between two analytical subjects. Second, the question types of the both analytical subjects were different in terms of the question types of listening activities focused on specific information but the questions in the tests emphasized on the appropriate responses to the last sentence. The number of participants in the conversation shows a similar frequency of one-person and two-people conversation, but the three-people conversation did not appear in both analytical subjects. The relationship of the characters shown in listening conversation was different between in two analytical subjects. The frequency of friend-friend relationship of the characters shown in listening activities was more used in the English listening comprehension tests. Based on the results above, the following implications can be drawn. First, the analysis of the similarities and differences between the two subjects ought to be regarded as the significant teaching strategy, or in other words, the supplementary teaching materials which would directly support middle school English teachers on authentic teaching of listening comprehension in the tests and activities in the textbooks. Second, English textbook writers and National English Listening Comprehension Test developers should make efforts to ensure that the teaching-learning activities and evaluation are carried out consistently.

해외여행 경험자의 여행 동기 및 거리지각에 따른 여행행태 연구 : 포커스 그룹 방법을 이용하여

김동연 경희대학교 관광대학원 2012 국내석사

Understanding about travelers who are travel consumers, especially those who are experienced in overseas must be essential as overseas traveling became a part of their life already. In this research, travel motivations of heavy travelers were studied with Focus Group Interview(FGI). The subjects are Korean overseas heavy travelers and drawn motivation elements were applied to Travel Career Ladder(TCL) theory suggested by Pearce(1988) and its modified model of Travel Career Pattern(TCP) suggested by Ryan(1998). These were explained based on analysis with precedent empirical studies. Also, based on travel types according to distance(flight time) perception, analysis how the conducts of travel behavior such as travel period, purpose, motivation and activities in destination were different was conducted. Heavy travelers who were recent 12 months overseas travel-experienced and travel overseas at least 2-3 times per year single and married men and women were selected for 3 focus group interviews. The following results were obtained : 1) heavy traveler's seven motivations were drawn as relax, experience·fun, self-development·self-actualisation, relationship·communication, escape, nostelgia and addiction. Specifically, not just one, but multiple motivations worked at the same time. Also, the proposed motivation in this study, 'addiction' can be explained as similar meaning or developed one with motivation from precedent study 'Like traveling itself' (Lee Taehee, 2000; Gang Youngwon·Park Suwan, 1996), and it means travel is settled as a habit that heavy travelers can not take away in their lives because they are addicted to it. 2) As a result of applying and explaining escape·relax, relationship, self-development·self-actualisation, nostelgia among drawn 7 motivations based on Pearce(1988), Ryan(1998) and Lee(2004), the result of this study could not be applied to TCL theory by Pearce(1988). This study showed rather aged and experienced travelers pursuit 'relax' and it is opposite result with TCL theory. However, some results could be applied to TCP theory from Ryan(1998) and Lee(2004) that classified relaxing, escaping and relationship with core motivation and argued other external motivations such as nostelgia affect complexly. 3) In the result of analyzing travel types, the conducts of travel behavior such as travel time, period, motivation, purpose, activities in destination were shown differently according to 'distance perception', short-haul, mid-haul and long-haul trips. For example, in case of travel time, a short-haul trip was not negatively affected from date, but people tended to travel in summer holidays or golden week for a mid-haul trip and they traveled for a long-haul when they have long vacation or when they are in between jobs. In this study, the necessity need of additional travel type study considering ‘distance’ can be raised and marketing view point can be provided.

다물체 동역학 해석을 이용한 인공위성 전개구조물의 전개해석 및 검증

김동연 전북대학교 일반대학원 2019 국내석사

In this study, deployment analysis is performed on the articulated hinge and the tape spring hinge, which are devices for deploying the deployable structure in space. The results of the analysis and test results using a deployment test equipment are compared and verified. The spring stiffness of the articulated hinge is optimized by using the response surface method(RSM) to meet the deployment design requirements. Tape spring hinge, a representative model of flexible hinges, deploy deployable structures using the strain energy generated when they are folded. The tape spring hinge maintains the unfolded state when deployed without a separate stopper and latching mechanism. The torque according to the angle is measured because it maintains the deployed state by using the nonlinearity of the torque according to the angle. In order to verify the deployment analysis results, the analysis model is set up with the equations of motion and the angle and torque values are obtained with time. To verify the analysis results of the articulated hinge and the tape spring hinge, a development test device is constructed. The articulated hinge is selected as the deployment device and three dummy panels are deployed. Making a zero gravity condition like a space orbit is the most important in the deployment test. For this reason, air bearings and wires are connected to the panels to compensate for gravity and test data is recorded using a motion capture camera. The test data results are compared with the analytical data and verified.

Production and characterization of murine monoclonal antibody A-14-18 to human plasma apolipoprotein A-I

김동연 順天鄕大學校 1998 국내박사

기판 집적 도파관 구조를 이용한 X-밴드 위성 탑재용 원형편파 안테나 설계 및 해석

김동연 한국항공대학교 2009 국내석사

In this paper, novel X-band circular polarized antennas are developed using substrate integrated waveguide (SIW) technology with periodic metallic via arrays. Two types of cavity-encircled antennas incorporating microstrip circular patch and annular-slot are presented and investigated as radiating elements. Both of them are commonly composed of three parts: cavity-backed radiator, SIW feeding structure including impedance matching network, and microstrip-to-SIW transition for measurement. In particular, it is noticeable that the proposed SIW feeding structure can replace the conventional microstrip and strip transmission lines which are likely to introduce significant spurious radiation at high frequency. At the beginning of this paper, the advantages and design procedures of SIW are described with mainly focused on the applications of many passive and active devices to microwave and millimeter wave frequency regime. With the help of these methodology and fundamental design equations, creative two types of SIW antennas are designed, developed, and verified by carrying out the experiment. Secondly, the principles of generating circular polarization (CP) are also analyzed through the EM full wave simulator, CST MWS based on FDTD algorithm for microstrip circular patch SIW antenna and annular-ring SIW antenna, respectively. In addition, we suggested the structures of extended 2 x 2 array antenna model adopting sequentially rotated feeding network composed of SIW structure. Moreover, indispensable microwave components such as SIW power divider, SIW phase shifter, and SIW layer-to-layer transition are required for the enhanced electrical performances in phased-array antenna system. As a result, it is conjectured that the techniques introduced in this paper could be effectively extended and applied to other microwave devices in satellite communication systems requiring low radiation loss and higher radiation efficiency. 본 논문에서는 새로운 형태의 위성 통신용 X-밴드 원형편파 안테나를 제시하였다. 기존의 안테나 급전 구조로 많이 사용되는 마이크로스트립(microstrip) 및 스트립(strip) 선로와 같이 방사손실이 큰 선로 대신에 높은 입력 전력을 낮은 손실로 전송할 수 있는 경량 및 소형화 구현이 가능한 기판 집적 도파관(Substrate Integrated Waveguide, SIW) 기술을 적용하였다. SIW 기술의 장점, 설계방법 및 적용범위를 바탕으로 본 논문에서 제안하는 SIW 구조를 이용한 마이크로스트립의 원형 패치 안테나와 원형 슬롯 두 안테나의 설계방법 및 동작원리에 대해 구체적으로 논하였다. 또한, 제안된 두 가지 안테나의 전기적인 특성을 자세히 고찰하며 측정 결과와 비교, 검증하였다. 또한 본 연구의 안테나를 배열 안테나에 적용할 경우 필요한 소요 기술, 구현 가능한 배열 구조를 제시하였으며 그 결과 본 연구의 안테나들은 위성 통신용 배열 안테나의 단일 소자로 사용할 수 있을 것으로 기대된다.

Cryopreservation of lipoaspirates: In vitro measurement of the viability of adipose derived stem cell and lipid peroxidation

김동연 가톨릭대학교 대학원 2021 국내박사