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Otake, Y. (author), Honjo, Y. (author), Hiramatsu, Y. (author), Lee, K. (author), Kodaka, T. (author)
A design scheme is proposed to evaluate the safety of continuous linear structure i.e. river levee. The scheme is developed to establish a procedure to continuously evaluate the stability failure of embankment during flood runoff by seepage, and to identify locations for reinforcement of river levee. A 20km stretch of a fairly large river...
conference paper 2015
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Lee, C.H. (author), Kim, D.Y. (author), Kim, H.D. (author), Kim, K.C. (author)
Dynamic behaviour and heat transfer characteristics of impinging droplets on a hot surface were studied experimentally. De-ionized water droplet was made through a 31G injection needle and the droplet size was 2 mm. A sapphire plate was heated up to 300ºC by a hotplate. A high speed camera was used for visualization, and the frame rate was 4000...
conference paper 2013
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Lee, D. (author), Pietrzyk, P. (author), Donkers, S. (author), Liem, V. (author), van Oostveen, J. (author), Montazeri, S. (author), Boeters, R. (author), Colin, J. (author), Kastendeuch, P. (author), Nerry, F. (author), Menenti, M. (author), Gorte, B.G.H. (author), Verbree, E. (author)
The impact of 3D geometry complexity on the accuracy of simulating radiative, convective and conductive fluxes in an urban canyon was explored. The research involved the collection of meteorological data in an urban canyon in the city of Strasbourg, France, for input into a 3D model called LASER/F, which simulates the aforementioned fluxes. The...
conference paper 2013
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Zlatanova, S. (author), van Oosterom, P.J.M. (author), Lee, J (author), Li, Ki Joune (author), Lemmen, C. H. J. (author)
Guidance and security in large public buildings such as airports, museums and shopping malls requires much more information that traditional 2D methods offer. Therefore 3D semantically-reach models have been actively investigated with the aim to gather knowledge about availability and accessibility of spaces. Spaces can be unavailable to...
conference paper 2016
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Agusdinata, D.B. (author), Lee, S. (author), Zhao, F. (author), DeLaurentis, D. (author), Thissen, W.A.H. (author)
A full realization of alternative energy such as biofuels depends on the existence of a viable supply chain (SC) network. This work seeks to understand the dynamics of biofuels SC network by developing an approach to model the dynamics and characterize system behavior. A multi-actor approach is pursued in which the interests of three supply...
conference paper 2012
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Kihm, H.W. (author), Lee, K.G. (author), Seo, M.A. (author), Ahn, K.J. (author), Adam, A.J.L. (author), Kang, J.H. (author), Park, Q.H. (author), Planken, P.C.M. (author), Kim, D.S. (author)
We study the dielectric constant dependent diffraction phenomena of single slit apertures, both theoretically and experimentally. We experimentally simulate perfect metal and real metal cases by investigating subwavelength diffraction by a single slit, both in nano-optical and in terahertz regimes, keeping the slit-width/wavelength ratio...
conference paper 2008
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Mocci, J. (author), Cua, M. (author), Lee, S (author), Jian, Y (author), Pozzi, P. (author), Quintavalla, M. (author), Trestino, C. (author), Verstraete, H.R.G.W. (author), Wahl, D. (author), Muradore, R. (author), Zawadzki, R.J. (author), Verhaegen, M.H.G. (author), Sarunic, M.V. (author), Bonora, S. (author)
The use of adaptive lenses instead of deformable mirrors can simplify the implementation of an adaptive optics system. The recently introduced Multi-actuator Adaptive Lens (MAL) can be used in closed loop with a wavefront sensor to correct for time-variant wavefront aberrations. The MAL can guarantee a level of correction and a response time...
conference paper 2017
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Tobón, L. (author), Chen, J. (author), Lee, J. (author), Yuan, M. (author), Zhao, B. (author), Liu, Q.H. (author)
Many system-level electromagnetic design problems are multiscale and very challenging to solve. They remain a significant barrier to system design optimization for a foreseeable future. Such multiscale problems often contain three electrical scales, i.e., the fine scale (geometrical feature size much smaller than a wavelength), the coarse scale ...
conference paper 2013
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Jeong, D.H. (author), Jang, B.B. (author), Lee, J.Y. (author), Hong, S.I. (author), Van Oosterom, P.J.M. (author), de Zeeuw, K. (author), Stoter, J.E. (author), Lemmen, C.H.J. (author), Zevenbergen, J.A. (author)
Korea and The Netherlands have started a 3 year cooperation covering joint research, capacity building and international advisory in the domain of cadastre and land administration with a special focus on 3D developments. At the Korean side the Korea Cadastral Survey Corporation and the University of Seoul are involved, while at the Netherlands...
conference paper 2012
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Choi, Y.S. (author), Seo, K.W. (author), Lee, S.J. (author), Kim, S.H. (author), Yun, J.H. (author)
The flows in a naturally evaporating liquid droplet confined by two flat plates were investigated experimentally. A diluted sodium-chloride (NaCl) aqueous solution was used to form the confined droplets. The evaporation of water at the free surface of the droplet built up a concentration gradient inside the solution, which induced a natural...
conference paper 2013
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Fan, Y. (author), Oldenbeuving, R.M. (author), Klein, E.J. (author), Lee, C.J. (author), Song, H. (author), Khan, M.R.H. (author), Offerhaus, H.L. (author), Van der Slot, P.J.M. (author), Boller, K.J. (author)
We report on a novel type of laser in which a semiconductor optical amplifier (SOA) receives frequency-selective feedback from a glass-waveguide circuit. The laser we present here is based on InP for operation in the 1.55 µm wavelength range. The Si3N4/SiO2 glass waveguide circuit comprises two sequential high-Q ring resonators. Adiabatic...
conference paper 2014
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Lee, S. (author), De Bodt, K. (author)
conference paper 2007
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Lee, J.I. (author), Kim, C. (author), Kim, K.H. (author)
The purpose of this paper is to develop an accurate analysis code for the flow of arc-heater by employing advanced numerical models. Governing equations are hyperbolic-type axisymmetric Navier-Stokes equations which include joule heating by arc, radiation and turbulent transport effect. Joule heating is simply calculated by Ohm’s law with the...
conference paper 2006
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Li, K. (author), Huang, R. (author), Phang, S.K. (author), Lai, S. (author), Wang, F. (author), Tan, P. (author), Chen, B.M. (author), Lee, T.H. (author)
In this paper, we propose an approach to autonomously control a quadrotor micro aerial vehicle (MAV). With take-off weight of 50 g and 8-min flight endurance, the MAV platform codenamed ‘KayLion’ developed by the National University of Singapore (NUS) is able to perform autonomous flight with pre-planned path tracking. The vision-based...
conference paper 2014
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Troolin, D.R. (author), Lee, S.J. (author), Chamorro, L.P. (author)
Instantaneous and time-averaged volumetric velocity fields were obtained in the wake of a single, three-bladed hydrokinetic turbine model placed in a water flume at St. Anthony Falls Laboratory at the University of Minnesota, under subcritical conditions. A cylinder was placed upstream of the turbine in order to introduce large coherent motions...
conference paper 2013
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Barrett, R. (author), Lee, G. (author)
A new technique is presented for designing actuators for guided hard-launch adaptive munitions by using actuator and substrate strain limits, static analysis methods and matching the local actuator strains along its length by varying the width. This Load-Matched design technique leads to an exponential area distribution as a function of length...
conference paper 2004
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Lee, M.J. (author), Sun, P. (author), Charbon, E. (author)
We report on the characterization of single-photon avalanche diodes (SPADs) fabricated in standard 140-nm silicon on insulator (SOI) complementary metal-oxide-semiconductor (CMOS) technology. As a methodology for SPAD optimization, a test structure array, called SPAD farm, was realized with several junctions, guard-ring structures, dimensions,...
conference paper 2015
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Lee, S. (author)
conference paper 2015
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Yeom, E. (author), Lee, S.J. (author)
Variations of hemodynamic parameters have been known as an important factor for various cardiovascular diseases. Accurate measurement of wall shear stress in blood vessels is essential for early detection and therapeutic treatments of cardiovascular diseases [1]. For that, many velocity field measurement techniques have been proposed and...
conference paper 2013
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Lee, A. (author), Van Oort, N. (author), Van Nes, R. (author)
This paper presents research on synchronization of transfers and its impact on service reliability from a passenger perspective. Passenger reliability is analyzed for the case of a multi-operator transfer node. A method is developed to calculate the passenger centered reliability indicators: additional travel time and reliability buffer time,...
conference paper 2014
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