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132 results on '"Du, Yilin"'

1. Zero-Shot Cross-Lingual NER Using Phonemic Representations for Low-Resource Languages

Author

Sohn, Jimin, Jung, Haeji, Cheng, Alex, Kang, Jooeon, Du, Yilin, and Mortensen, David R.

Subjects
Computer Science - Computation and Language, Computer Science - Artificial Intelligence
Abstract

Existing zero-shot cross-lingual NER approaches require substantial prior knowledge of the target language, which is impractical for low-resource languages. In this paper, we propose a novel approach to NER using phonemic representation based on the International Phonetic Alphabet (IPA) to bridge the gap between representations of different languages. Our experiments show that our method significantly outperforms baseline models in extremely low-resource languages, with the highest average F1 score (46.38%) and lowest standard deviation (12.67), particularly demonstrating its robustness with non-Latin scripts. Our codes are available at https://github.com/Gabriel819/zeroshot_ner.git, Comment: Accepted to EMNLP 2024 Main Conference

Published
2024

3. Topologically Variable and Volumetric Morphing of 3D Architected Materials with Shape Locking

Author

Xiao, Kai, Wang, Yuhao, Song, Chao, Zou, Bihui, Liang, Zihe, Han, Heeseung, Du, Yilin, Jiang, Hanqing, and Ju, Jaehyung

Subjects
Condensed Matter - Materials Science
Abstract

The morphing of 3D structures is suitable for i) future tunable material design for customizing material properties and ii) advanced manufacturing tools for fabricating 3D structures on a 2D plane. However, there is no inverse design method for topologically variable and volumetric morphing or morphing with shape locking, which limits practical engineering applications. In this study, we construct a general inverse design method for 3D architected materials for topologically variable and volumetric morphing, whose shapes are lockable in the morphed states, which can contribute to future tunable materials, design, and advanced manufacturing. Volumetric mapping of bistable unit cells onto any 3D morphing target geometry with kinematic and kinetic modifications can produce flat-foldable and volumetric morphing structures with shape-locking. This study presents a generalized inverse design method for 3D metamaterial morphing that can be used for structural applications with shape locking. Topologically variable morphing enables the manufacture of volumetric structures on a 2D plane, saving tremendous energy and materials compared with conventional 3D printing. Volumetric morphing can significantly expand the design space with tunable physical properties without limiting the selection of base materials.

Published
2023

15. Aptavalve-gated Mesoporous Carbon Nanospheres image Cellular Mucin and provide On-demand Targeted Drug Delivery

Author

Li, Chengyi, Qian, Min, Wang, Shanshan, Jiang, Huilin, Du, Yilin, Wang, Jianxin, Lu, Weiyue, Murthy, Niren, and Huang, Rongqin

Subjects
Medical Biotechnology, Biomedical and Clinical Sciences, Biomedical Imaging, Bioengineering, Nanotechnology, Cancer, Biotechnology, Detection, screening and diagnosis, 4.1 Discovery and preclinical testing of markers and technologies, Animals, Aptamers, Nucleotide, Carbon, Drug Delivery Systems, Drug Liberation, Humans, MCF-7 Cells, Mice, Nude, Mucins, Nanospheres, Porosity, MCN, aptavalve, real-time imaging, on-demand, targeting delivery, Oncology and Carcinogenesis, Oncology and carcinogenesis
Abstract

In this report, we present a mesoporous carbon nanosphere that can target drugs to tumors and image tumor biomarkers. A single-strand DNA (P0 aptamer) aptavalve was capped on the surface of doxorubicin-loaded oxide mesoporous carbon nanospheres (Dox-OMCN-P0) through π-π stacking for real-time imaging-guided on-demand targeting drug delivery. The Dox-OMCN-P0 could not only realize the detection of MUC1 tumor marker with a wide linear range (0.1 - 10.6 μmol/L) and a low detection limit (17.5 nmol) based on different apparatuses, but also achieve in-situ targeting imaging of cellular MUC1 concentration in vitro and in vivo via "off-on" fluorescence biosensing. Much attractively, as a real-time feedback of the diagnostic/imaging outcomes, Dox-OMCN-P0 accomplished the on-demand targeting drug delivery in quantitative response to MUC1. Controllable chemotherapy with sustained release and pH-sensitiveness, together with the potential photothermal therapy, were also clearly demonstrated. This is a simple but advanced platform, which could well achieve the real-time switchable imaging of cellular mucin for targeting cancer therapy.

Published
2017

47. BATTERY POWERED PORTABLE VAPOR COMPRESSION CYCLE SYSTEM WITH PCM CONDENSER

Author

Du, Yilin

Subjects
PCM Condenser, Energy, FOS: Mechanical engineering, Personal Cooling, Thermosiphon, Mechanical engineering, Vapor Compression Cycle
Abstract

A battery powered air-conditioning device was developed to provide an improved thermal comfort level for individuals in inadequately cooled environments. This device is a battery powered air-conditioning system with the phase change material (PCM) for heat storage. The condenser heat is stored in the PCM during the cooling operation and is discharged while the battery is charged by using the vapor compression cycle as a thermosiphon loop. The main focus of the current research was on the development of the cooling system. The cooling capacity of the vapor compression cycle measured was 165.6 W with system COP at 2.85. It was able to provide 2 hours cooling without discharging heat to the ambient. The PCM was recharged in nearly 8 hours under thermosiphon mode.

Published
2016
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48. Transient Modeling of a Thermosiphon based Air Conditioner with Compact Thermal Storage: Modeling and Validation

Author

Dhumane, Rohit, Du, Yilin, Ling, Jiazhen, Aute, Vikrant, and Radermacher, Reinhard

Subjects
thermosyphon, air conditioner, heat pump, compact storage, Thermosiphon
Abstract

The Roving Comforter (RoCo) is an innovative personal thermal management technology currently being developed at the University of Maryland as part of Advanced Research Projects Agency – Energy (ARPA-e) project. Among several system configurations of RoCo, the paper focuses on a miniature battery-powered vapor compression cycle (VCC) system fitted on an autonomous robotic platform. The heat rejected from the condenser during its operation is stored in a compact phase change material (PCM) based heat storage device. The PCM can store only a limited amount of heat until it melts completely. The PCM heat exchanger needs to be designed so that it captures the heat generated during the VCC operation and then gets frozen with minimal energy usage during the non-operation mode. A thermosiphon mechanism is envisioned for this recharging of PCM material during the non-operation mode. It operates through the same refrigerant circuit by bypassing certain components like the compressor. Thus the circuit operates as a VCC during the day and as thermosiphon during the night. The VCC needs to have a high coefficient of performance (COP) while the thermosiphon needs to reject heat at highest possible rate. Hence transient modeling of thermosiphon is desired. The prototype developed has a COP of 2.85 and needs roughly 8 hours to recharge the thermosiphon. These trends have been captured on a transient model for the VCC operation while the development of thermosiphon modeling is being carried out. Comparison of modeling results with the experimental data have been provided to estimate the error in the model. Several cases of RoCo thermosiphon are then simulated using the model for the optimum design fulfilling requirements for both VCC and thermosiphon.

Published
2016

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