A sharp immersed method for 2D flow-body interactions using the vorticity-velocity Navier-Stokes equations by Ji, Xinjie, Gabbard, James, van Rees, Wim M.

“…However, for the vorticity-velocity form of the Navier-Stokes equations, existing immersed geometry discretizations for two-way coupled problems only achieve first order spatial accuracy near solid boundaries. Here we introduce a sharp-interface approach based on the immersed interface method to handle the one- and two-way coupling between an incompressible flow and one or more rigid bodies using the 2D vorticity-velocity Navier-Stokes equations. …”
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Reconstructing Transit Vehicle Trajectory Using High-Resolution GPS Data by Huang, Yuzhu, Abdelhalim, Awad, Stewart, Anson, Zhao, Jinhua, Koutsopoulos, Haris

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Practical Rateless Set Reconciliation by Yang, Lei, Gilad, Yossi, Alizadeh, Mohammad

“…We present Rateless Invertible Bloom Lookup Tables (Rateless IBLTs), the first set reconciliation protocol, to the best of our knowledge, that achieves low computation cost and near-optimal communication cost across a wide range of scenarios: set differences of one to millions, bit strings of a few bytes to megabytes, and workloads injected by potential adversaries. …”
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Cross-Shelf Exchange Driven by Dense Flow Down a Canyon by Mier, Christian M.

“…At later times, another mechanism may also be at play where large dense cyclonic (anticlockwise) eddies on the northern continental shelf may pull more dense water out of the canyon producing a region of low pressure, near the canyon head, which induces an increase in ambient flow into the canyon. …”
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Geo-UNet: A Geometrically Constrained Neural Framework for Clinical-Grade Lumen Segmentation in Intravascular Ultrasound by Chen, Yiming

“…Our unified loss function carefully balances area-based, distance-based, and contour-based penalties to provide near clinical-grade generalization in unseen patient data. …”
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Urban site characterization using DAS dark fibers on the MIT campus in Cambridge, Massachusetts by Chang, Hilary, Nakata, Nori

“…The depth to bedrock is 75–95 m on the west campus. The site near the waterfront has a lower VS and deeper bedrock. …”
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Hardness of Approximate Diameter: Now for Undirected Graphs by Dalirrooyfard, Mina, Li, Ray, Vassilevska Williams, Virginia

“…It has been open whether a better approximation is possible in near-linear time. A series of papers on fine-grained complexity have led to strong hardness results for diameter in directed graphs, culminating in a recent tradeoff curve independently discovered by [Li, STOC'21] and [Dalirrooyfard and Wein, STOC'21], showing that under the Strong Exponential Time Hypothesis (SETH), for any integer k?…”
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Three-dimensional flow structures and vorticity control in fish-like swimming by Zhu, Q., Wolfgang, M.J., Yue, D.K.P., Triantafyllou, M.S.

“…The computations contain no structural model for the fish and hence no recoil correction. First, we show the near-body flow structure produced by the travelling-wave undulations of the bodies of a tuna and a giant danio. …”
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House, home, and community : good models for graduate student housing by Han, Jienan, 1978-

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Selective removal of hydroxyl groups from graphene oxide by Chua, Chun Kiang, Pumera, Martin

“…Numerous methods starting from various reducing agents have been developed to obtain near-pristine graphene sheets. However, most of the reducing agents are not mechanistically supported by classical organic chemistry knowledge and of those that are supported, they are only theoretically capable of, at most, reducing oxygen-containing groups on graphene oxide to hydroxyl groups. …”
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Cooperative field localization and excitation eigenmodes in disordered metamaterials by Papasimakis, Nikitas, Jenkins, Stewart D., Savo, Salvatore, Zheludev, Nikolay I., Ruostekoski, Janne

“…We investigate numerically and experimentally the near-field response of disordered arrays comprising asymmetrically split ring resonators that exhibit a strong cooperative response. …”
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Evolving optimal and diversified military operational plans for computational red teaming by Zeng, Fanchao, Decraene, James, Low, Malcolm Yoke Hean, Zhou, Suiping, Cai, Wentong

“…Numerous multiobjective evolutionary algorithms (MOEAs) have been applied to CRT; however, the elitist and converging nature of these Pareto-based optimization algorithms typically leads to the generation of optimal, with respect to the Pareto front, but poorly diversified adversarial operational plans. As a result, the near-optimal alternative strategies are omitted; this considerably limits the applicability of CRT when considering the decision makers point of view. …”
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First-principles study of the lattice dynamics of Sb2S3 by Liu, Yun, Eddie Chua, Kun Ting, Sum, Tze Chien, Gan, Chee Kwan

“…The effect of Born effective charges is taken into account using a mixed-space approach, resulting in the splitting of longitudinal and transverse optical (LO-TO) phonon branches near the zone center. Zone-center frequencies agree well with Raman scattering experiments. …”
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Transfer optimization in complex engineering design by Tan, Alan Wei Min

“…Consequently, traditional optimization algorithms that typically require up to several thousand exact function evaluations to obtain near-optimal solutions, are problematic to cost-effectively utilize. …”
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Phase-preserved macroscopic visible-light carpet cloaking beyond two dimensions by Chu, Chia-Wei, Zhai, Xiaomin, Lee, Chih Jie, Wang, Po-Hao, Duan, Yubo, Tsai, Din Ping, Zhang, Baile, Luo, Yuan

“…As an extension of previous two-dimensional (2D) macroscopic carpet cloaks, this almost-three-dimensional carpet cloak exhibits three-dimensional (3D) invisibility for illumination near its center (i.e. with a limited field of view), and its ideal wide-angle invisibility performance is preserved in multiple 2D planes intersecting in the 3D space. …”
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A composite electrode of TiO2 nanotubes and nanoparticles synthesised by hydrothermal treatment for use in dye-sensitized solar cells by Wang, Hairong, Zhao, Dongliang, Huo, Kaifu, Fu, Jijiang, Wang, Xiaoyan, Sun, Lidong, Zhang, Sam, Wang, Xiu

“…The parts of the tubes near the bottom were constantly filled with nanoparticles, which limited cell efficiency to about 2.2% when the length was over 16.5 μm. …”
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Motion tracking drone for extreme sports filming by Iastrebov, Viatcheslav, Wong, Choon Yue, Pang, Wee Ching, Seet, Gerald

“…Our goal is to deploy an autonomous UAV near the target within the accuracy of GPS and localize it with a secondary beacon for tracking an athlete. …”
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Jetting of viscous droplets from cavitation-induced Rayleigh-Taylor instability by Zeng, Qingyun, Gonzalez-Avila, Silvestre Roberto, Voorde, Sophie Ten, Ohl, Claus-Dieter

“…Experiments are carried out by levitating the droplet in an acoustic trap and generating a laser-induced cavitation bubble near the centre of the droplet. On the simulation side, the volume of fluid method (OpenFOAM) solves the compressible Navier-Stokes equations while accounting for surface tension and viscosity. …”
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A feasibility study on computational prediction on the death domain superfamily protein oligomers by Zhang, Jiawen

“…With the structure at near-atomic resolution, we managed to demonstrate the mechanism of CARD8-CARD crosstalk to upstream or downstream CARDs.…”
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Design and development of an online platform for peer tutorial scheme by Heng, Nadine Nyi Zheng

“…Nevertheless, the need for Social Distancing remains due to precautionary reasons thus online classes and here to stay, at least for the near future. That being said, online classes bring about many benefits such as increased convenience and flexibility for both students and tutors alike. …”
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