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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An experimental setup for physiological evaluation of face mask by Joseph, Frank Gerard

“…This project aims to improve the long-used face mask testing methods and processes to better evaluate the efficacy of a face mask while considering the physiological variables when tested in a near-human environment. A simplified version or the current testing method was created with a repurposed cardiac pump. …”
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Nanostructuring confinement for controllable interfacial charge transfer by Qiao, Wei, Tao, Hua Bing, Liu, Bin, Chen, Jiazang

“…Transfer of charge carriers through the carbon-semiconductor interface is the key electronic process, which determines the role of charge separation channels, and is sensitively influenced by band structures of the semiconductor near the contacts. Usually, this electronic process suffers from excessive energy dissipation by thermionic emission, which will undesirably prevent the interfacial charge transfer and eventually aggravate the recombination of photogenerated charge carriers. …”
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Post-buckling transition of compressed pipe strings in horizontal wellbores by Zhang, Qiang, Wang, Jiacheng, Cui, Wei, Xiao, Zhongmin, Yue, Qianbei

“…After sinusoidal buckling, it was observed that the compressed string was not in continuous contact with the horizontal wellbore, and two non-contact sections appeared near the string ends. These numerical results are beneficial for understanding the post-buckling behaviors of horizontal strings in wellbores.…”
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An isogeometric-meshfree collocation approach for two-dimensional elastic fracture problems with contact loading by Li, Weidong, Nguyen-Thanh, Nhon, Zhou, Kun

“…The displacement discontinuity along the crack surface is modeled by the visibility criterion and the singularity of near-tip stress fields is captured by adaptive mesh refinement without adding tipenrichment functions, thereby reducing the degrees of freedom compared with the extended finite element method. …”
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In-band RCS reduction and isolation enhancement of a 24 GHz radar antenna using metamaterial absorber for sensing and automotive radar applications by Sharma, A., Dwari, S., Kanaujia, B.K., Gangwar, D., Kumar, S., Singh, Satya P., Lay-Ekuakille, A.

“…The proposed MA shows near unity normalized impedance at 24.1 GHz with 90% absorptivity bandwidth of 1 GHz. …”
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Vehicle re-identification using machine learning by Tang, Lisha

“…The key challenges lie in the subtle inter-class discrepancy caused by near-duplicated identities and the significant intra-class distance due to diverse factors, including illumination, viewpoints, and background interference. …”
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