Hanil E-Hwa (Slovakia)

We present Lagrangian Hashing, a representation for neural fields combining the characteristics of fast training NeRF methods that rely on Eulerian grids (i.e.~InstantNGP), with those that employ points equipped with features as a way to represent information (e.g. 3D Gaussian Splatting or PointNeRF). We achieve this by incorporating a point-based representation into the high-resolution layers of the hierarchical hash tables of an InstantNGP representation. As our points are equipped with a field of influence, our representation can be interpreted as a mixture of Gaussians stored within the hash table. We propose a loss that encourages the movement of our Gaussians towards regions that require more representation budget to be sufficiently well represented. Our main finding is that our representation allows the reconstruction of signals using a more compact representation without compromising quality.

Abstract Aqueous zinc-ion batteries (AZIBs) are increasingly recognized as a sustainable alternative to lithium-ion batteries (LIBs) due to their abundance, safety, and lower environmental impact. However, the hydrogen evolution reaction (HER) and uncontrolled diffusion of Zn2+ and SO42- ions lead to the dendrite formation and side reactions, which hinder their practical application by forming a non-conductive layer on the Zn anode. This layer impedes the ion transport and electron flow, reducing the Coulombic efficiency (CE) for the Zn nucleation. Here, to simultaneously regulate the diffusion of H+, Zn2+, and SO42- in the electrolyte, an ion-sieving accelerating channel was constructed to unify the Zn deposition by introducing an eco-friendly layer-by-layer self-assembly of a flocculant poly(allylamine hydrochloride) (PAH) and its tautomer poly(acrylic acid) (PAA). The dual-ion channels, created by strong electrostatic interactions between carboxylate anions (COO⁻) and ammonia cations (NH₃⁺), promote the uniform Zn deposition along the (002) plane, exhibiting a CE of 99.8% after 1600 cycles in the Zn||Cu asymmetric cell. With the facile fabrication of the layer-by-layer self-assembled Zn anode, an Ah-level pouch cell (17.36 Ah) with a high mass loading (> 8 mg cm⁻²) demonstrated exceptional performance, retaining a capacity of 93.6% for at least 250 cycles at 1.7 C. This research offers a universal strategy for optimizing electrode mechanisms and advancing the manufacturing process of eco-friendly, high-performance aqueous batteries.

As natural disaster like desertification and flood by climate change happen, water management has been interesting more increasingly than before. Especially, South Korea, one of countries of water shortage, makes effort LID using rain-water with the center of government. At the houshold area like apartment, the main system using rain-water is collecting system. Rain-water collecting system is side gutter collecting system and round collecting system. This study aims at evaluating the life cycle cost comparing presently applied collecting systems with drain collecting system which was developed. As a result, life cycle cost of drain collecting system was effected 53% reduction besides of round collecting system.

<div class="section abstract"><div class="htmlview paragraph">Recently, the wagon for European has been developed. The characteristic of this vehicle is to have a capability of large luggage space.</div><div class="htmlview paragraph">Therefore the passenger needs to be protected from injuries by sudden inflow of baggage from luggage room. This is also a requirement of EU regulation (ECE R-17[<span class="xref">4</span>]). Barrier Net[<span class="xref">1</span>, <span class="xref">2</span>, <span class="xref">3</span>] to small size wagon has been adopted for the first time based on advanced foreign supplier's technology. This reality still gives us the burden of high cost and royalty expenditure.</div><div class="htmlview paragraph">The objective of this study is to overcome these restrictions, especially for patent circumvention and secure the new design concept which is entirely independent of the present system in addition to cost effectiveness.</div></div>

We developed silicon micro-mirrors with two asymmetric axes for electrostatic field distribution measurements using a single external piezoelectric ceramic vibrating element. The 2D asymmetric silicon micro-mirrors were fabricated by using an SOI-MEMS process. The vibration transmissibility of the proposed mirror under a vacuum atmosphere was evaluated by dynamic analysis. We obtained the resonant frequency in the low-speed axis of 23.3 Hz and in the high-speed axis of 556.8 Hz respectively. To prevent a reduction in the amplitude width, we induced a 90° phase shift between the lowand high-speed axes at the resonance frequency. The ratio of the deformation between the low-speed axis of 30 Hz and the high-speed axis of 604 Hz was simulated to be 4.04. In measurement, the ratio of the deformation between the low-speed axis of 23.3 Hz and the high-speed axis of 556.8 Hz was 6.48. The difference between the calculated and experiment values were apparently due to the fabrication errors and frequency characteristics of piezoelectric ceramic vibrating element. A Lissajous pattern projected onto the screen. The scanning angle was a degree of 7.6 (total angle) in the lowand high-speed axis. We subsequently measured the electrostatic field distribution using the 2D asymmetric silicon micro-mirrors by means of the optical level method.

Asymmetric silicon micro-mirrors are fabricated by the anodic bonding of an ultra-thin silicon film on a glass substrate, followed by the fabrication of ultra-thin silicon microelectromechanical systems (MEMS) mirror structures by laser micro-processing. Laser micro-processing, which merges the direct laser fabrication of ultra-thin silicon and anodic bonding, is easier than the silicon-on-insulator-MEMS process. Typically, polished ultra-thin silicon warps under residual stress. However, a flat surface profile was achieved on the scanning mirror of the silicon micro-mirror by anodic bonding and uniform pressure application. By vibrating the asymmetric silicon micro-mirror with an external vibrating element, we obtained a horizontal operation of 118 Hz and a vertical operation of 11040 Hz at the resonance frequency. The Lissajous pattern was also projected on the screen using the horizontal and vertical operations.

Blodets bånd