韓國리스産業의 海外直接投資에 관한 硏究

申東洙,朴鍾聲 홍익대학교 경영연구소 1995 경영연구 Vol.20 No.-

Quebec Water 2010 SYMPOSIUM 참석 및 콜로라도주립대 수리실험실탐방

신동수,신현석 한국수자원학회 2010 한국수자원학회논문집 Vol.43 No.11

Waveguiding Effect in Electroabsorption Modulator: Passivation Layers and Their Impact on Extinction Ratios

신동수 한국전자통신연구원 2005 ETRI Journal Vol.27 No.1

Waveguide structures of the stand-alone electroabsorption (EA) modulator and the electroabsorption modulated laser (EML) are investigated using the 3D beam propagation method. The EA waveguide structures with InP-based passivation layers show saturation in the extinction ratio (ER) due to the stray light traveling through the passivation layers. This paper demonstrates that narrower passivation layers suppress stray-light excitation in the EA waveguide, increasing the ER. A taper structure in the isolation section of the EML waveguide can reduce the mode mismatch and suppress the excitation of the stray light, increasing the ER further. Low-index-polymer passivation layers can confine the mode more tightly in the active waveguide, yielding an even higher ER.

낙동강하구의 점착성 퇴적물의 이동에 대한 연구

신동수 경상대학교 해양산업연구소 1997 해양산업연구소보 Vol.9 No.-

Significant portion of the pollution load is quite often transported adsorbed to suspended aggregates of cohesive fine sediments. Thus, the cohesive sediment transport problem is important in predicting and controlling water quality, and pollution in estuaries and coastal waters. Contents of this study are : 1) Physical processes of cohesive sediment transport such as flocculation, settling, deposition. erosion are described based on the review of literature. 2) Laboratory settling experiments to further understanding of the physical processes of cohesive sediment transport. 3) Field measurements and sampling for the estimation of cohesive sediment transport 4) Improvement of cohesive sediment transport model. 5) Application to Nakdong estuary.

한국하천의 유사량산정에 관한 연구

신동수,강주복,김희종 한국수자원학회 1981 한국수자원학회논문집 Vol.14 No.3

본 논문은 낙동강의 유사량산정을 위해서 소류사력과 부유사량, 사류사량을 실측하여 고찰한 것이다. 1. 하천에서 실측한 한계소류력을 다음 식으로 표시할 수 있다. 2. 실험실에서 얻어진 한계소류방식은 다음과 같다. 3. 부유사량의 산정공식은 다음과 같다. 4. 총류사량의 산정공식은 다음과 같다. This paper is studied a consideratin on the practical measure of the critical tractive force, suspended load and bed load of NAG-DONG river for the calculation of sediment load. 1.The critical tractive force measured in the river can be represented as fol

Effect of a Step Barrier on the Quantum-Confined Stark Effect and Applications to Electroabsorption Modulators with High Saturation Optical Power

신동수 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.47 No.1

The effect of a step barrier on the quantum-confined Stark effect (QCSE) is examined theoretically. We use a InGaAsP/InGaAsP quantum well (QW) as the basis structure and compare it with QWs having different step-barrier heights and widths. Since the step barrier delays the red shift of the QCSE when the electric field is applied from the well to the step barrier, QWs with step barriers can be used for high-optical-power operation. The reason behind the high-optical-power operation is that the high electric field facilitates the sweep-out of photogenerated carriers in the QW, thus reducing the charge screening effect. A wider step barrier is also shown to have an earlier onset of the red shift, thereby increasing the amount of red shift at a given field. Hence, the electroabsorption modulators with wider-step QWs can be used to increase the slope of the transfer curve and to reduce the residual absorption when a higher detuning energy is used.

十四經脈 중 '天'字 關聯 經穴에 대한 文獻的 考察

申東秀,李秉烈 대전대학교 한의학연구소 2002 한의학연구소 논문집 Vol.10 No.2

1.在十四經脈中"天"字的穴유天府,天鼎,天樞,天谿,天容,天宗,天柱,通天,天泉,天池,天井,天유,天膠,天衡,天突一共有十六個穴. 2.天字穴除了天樞穴外大部分都分布在天的意思的上方,上部,顚有關,由人體的上部來看,頭部有通天,天衡,天柱三穴,頸部有天鼎,天窓,天容 3穴,胸肋部有 天突,天谿,天池 3穴,肩部有天宗,天유,天膠3穴,上肢有天府,天泉,天井3穴. 3.在經穴中顯示出來"天"字穴的意思中'天'字大表的上部,上方.以此來看我們可以知道天府穴中的'府'字代表氣的聚集場所,天鼎穴中的'鼎'字代表特別的穴位外形,天樞穴中的'樞'字代表樞軸,天谿穴中的'谿'字代表氣的流通場所,天宗穴中的'宗'字代表集合,天窓穴中的'窓'字代表們窓或字是穴,天容穴中的'容'字代表容貌,通天穴中的'通'字代表疎通,天柱穴中的'柱'字代表?,天池穴中的'池'字代表氣的停留場所,天泉穴中的'泉'字代表氣的湧出場所,天井穴中的'井'字代表陷凹部位,天유穴中的'유'字代表骨間的陷凹部,天유穴中的'유'字代表窓,天衡穴中的'衡'字代表要衝或通,天突穴中的'突'字代表突起的意思. 4.這個穴位大部分都可以用灸法,可是對天府和天柱穴位的禁灸方法有文獻的差別所以我們要深刻的硏究. 5.'天'字穴在人體的上部竝且治療疏通天氣的心,肺有關的疾患.除此以外他的主治證是各穴包括的經絡臟腑疾患和經絡所流走部位的疾患,大腸疾患和頭部,頸項部,肩部,胸肋部等有關氣機不通的疾患.

고밀도 균일 안개스크린을 위한 에어로졸 유동의 최적 생성조건

신동수,송우석,김진원,김우진,구자예 한국분무공학회 2017 한국액체미립화학회지 Vol.22 No.1

The fog screen is a device projecting the media to the aerosol flow field. As major parameters to generate dense and steady fog screen, shear stress, optical blockage ratio and SMD were obtained result through experiment. The micro droplet was generated by the piezo oscillation element, and the aerosol flow mixed with an air flow was sprayed into the vertical direction from the top of the fog screen through the 280 mm slot. For produce a dense, uniform fog screen, the shear effect, optical blockage ratio and SMD between aerosol and air curtain were measured. The minimum and maximum shear stress conditions were selected and it was confirmed that the optical transmission deviation of the aerosol flow field was small when the aerosol and air curtain flow rates were changed. When the aerosol and air curtain flow power were 18 V (1.51 m/s) and 24 V (2.55 m/s), respectively, under the condition of the minimum shear stress and laminar flow, the optical blockage ratios with the spray length were small, and it produced a most stable and high density uniform fog screen by injecting a constant of 10 μm or less.

SWMM-LID를 이용한 상습침수유역 내 유출저감효과 분석

신동수,박재범,강두기,조덕준,Shin. Dong Soo,Park. Jae Beom,Kang. Doo Kee,Jo. Deok Jun 한국방재학회 2013 한국방재학회논문집 Vol.13 No.4

최근 기후변화에 의한 기상현상은 국지성 집중호우, 돌발홍수 등을 발생시켜 많은 인명과 재산의 피해를 가져오고 있다. 이로 인해 기록적인 폭우의 발생이 증가되고 있으며, 도시개발로 인해 자연공간이 감소하여 개발 전 지표면이 가지고 있던 유역 내 저류 및 지연효과가 현저하게 감소하고 시가지의 확대와 도로포장 등 유역 내 불투수층의 증가로 인하여 홍수유출량과 첨두유량이 점차 증가되고 있다. 이와 같은 원인으로 유출 출구점까지의 도달시간은 자연유역에 비해 현격하게 짧아져 과거 자연하천 유역과는 다른 수문학적 특성을 가지게 되며, 도시집중 현상으로 택지 및 시설부지의 부족현상이 가중됨으로써 하천범람 구역이나 홍수우려가 있는 범람원내 저지대까지 도시화가 이루어짐으로써 치수상 안전도가 상대적으로 저하되고 있다. 이에 본 연구에서는 도시유출해석모형인 SWMM 내 LID 모듈을 이용하여 대상유역내 적용 가능한 LID 기법 기술요소를 분석하여 적용하고 LID 기법에 따른 유출저감효과를 분석하였다. 분석결과, LID 영향 분석 시나리오는 각 기법의 적용에 따른 영향과 LID 적용전, 옥상녹화적용, 투수성포장의 적용 등 LID 3개의 시나리오를 선정하여 적용하였다. 시나리오 적용결과, 시나리오 A에 비하여 시나리오 B는 288.52ton, 시나리오 C는 240.26ton이 저감되었으며 각각 15.62%, 13.01%의 유출량 저감효과를 보였다. Recently meteorological phenomena caused by climate change have brought localized heavy rainfalls, flash-floods causing severe damage for human-life and property. They also increase the occurrence of record-breaking rainfall. Development in urban area decreases the portion of open spaces, landscapes, leading to significant diminution of storage and detention function of the basin. The expansion of impervious areas increases the extent of peak-runoff and runoff volume, especially the shorter time of concentraion due to development makes the basin have different hydrological characteristics compared to pre-development. In addition, urbanization worsen the requirement of site for residence and public facility so that even floodplain and inundated district are urbanized threatening safety for flood control. In this study, applicable LID techniques are analyzed and implemented using LID modules of SWMM, which is the model for urban stormwater-runoff management in the project area. Effects of implementing LID practices are also assessed and reviewed. The result shows that scenario B and C ruduced 288.52ton(15.62%), 240.26ton(13.01%) each in runoff simulations compared to scenario A.

농촌노인의 운동효능감 영향요인

신동수,김진순,김춘자,박상연,함옥경 한국간호과학회 2010 한국간호과학회 학술대회 Vol.2010 No.10