Yu‐Han Chen

ORCID: 0000-0001-5723-4789
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About
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Research Areas
  • Plant responses to water stress
  • Plant Stress Responses and Tolerance
  • Coastal wetland ecosystem dynamics
  • Tropical and Extratropical Cyclones Research
  • Climate variability and models
  • Flood Risk Assessment and Management
  • Remote-Sensing Image Classification
  • Remote Sensing in Agriculture
  • Underwater Vehicles and Communication Systems
  • Organic Electronics and Photovoltaics
  • Rice Cultivation and Yield Improvement
  • Cerebrovascular and Carotid Artery Diseases
  • Automated Road and Building Extraction
  • Underwater Acoustics Research
  • Perovskite Materials and Applications
  • Meteorological Phenomena and Simulations
  • Advanced Image and Video Retrieval Techniques
  • Advancements in Battery Materials
  • Plant and Fungal Interactions Research
  • Air Quality Monitoring and Forecasting
  • Peatlands and Wetlands Ecology
  • Magnesium in Health and Disease
  • Mechanisms of cancer metastasis
  • Ocean Waves and Remote Sensing
  • Urban Heat Island Mitigation

City University of Hong Kong
2023-2024

XinHua Hospital
2024

City University of Hong Kong, Shenzhen Research Institute
2024

Nanjing University of Information Science and Technology
2022-2024

Harbin Engineering University
2023-2024

Beijing Forestry University
2018-2023

Renmin University of China
2023

National Taiwan University
2013-2022

Fudan University
2022

University of California, Los Angeles
2021

Given the growing interest in community air quality monitoring using low-cost sensors, 30 PurpleAir II sensors (12 outdoor and 18 indoor) were deployed partnership with members living adjacent to a major interstate freeway from December 2017- June 2019. Established assurance/quality control techniques for data processing used sensor was evaluated by calculating completeness summarizing PM2.5 measurements. To evaluate performance, correlation coefficients (r) of divergence (CoD) assess...

10.1016/j.scitotenv.2021.150797 article EN cc-by-nc-nd The Science of The Total Environment 2021-10-07

Abstract A forced shallow-water model is used to understand the role of diabatic and frictional effects in generation, maintenance, breakdown hurricane eyewall potential vorticity (PV) ring. Diabatic heating parameterized as an annular mass sink variable width magnitude, nonlinear evolution tropical storm–like vortices examined under this forcing. produces a strengthening thinning PV ring time due combined radial advection by induced divergent circulation. If forcing makes thin enough, then...

10.1175/jas-d-13-0303.1 article EN Journal of the Atmospheric Sciences 2014-01-17

The sensitivity of Cyclone Global Navigation Satellite System (CyGNSS) data to inland water bodies was well documented, however, its advantage over other sensors has seldom been reported. In this work, a semantic segmentation method is adopted for detecting using the CyGNSS data. widely used LinkNet with global attention mechanism (GAM) and atrous spatial pyramid pooling (ASPP), namely GA-LinkNet, equipped better extract distributions. performance comparison an existing deep networks proved...

10.1109/lgrs.2022.3227596 article EN IEEE Geoscience and Remote Sensing Letters 2022-12-08

Masked Image Modeling (MIM) has made significant advancements across various fields in recent years. Previous research the hyperspectral (HS) domain often utilizes conventional Transformers to model spectral sequences, overlooking impact of local details on HS image classification. Furthermore, training models using raw features as reconstruction targets entails challenges. In this study, we specifically focus and feature modeling capabilities Vision Transformer (ViT) address limitations MIM...

10.1109/lgrs.2024.3360184 article EN IEEE Geoscience and Remote Sensing Letters 2024-01-01

Nowadays explainability in stock price movement prediction is attracting increasing attention banks, hedge funds and asset managers, primarily due to audit or regulatory reasons. Text data such as financial news social media posts can be part of the reasons for movement. To this end, we propose a novel framework Prediction-Explanation Network (PEN) jointly modeling text streams with alignment. The key component PEN model an shared representation learning module that learns which texts are...

10.1609/aaai.v37i4.25648 article EN Proceedings of the AAAI Conference on Artificial Intelligence 2023-06-26

10.1016/j.jag.2024.104122 article EN cc-by International Journal of Applied Earth Observation and Geoinformation 2024-08-28

Typhoon Fanapi (2010) traveled westward across the Central Mountain Range of Taiwan on 19 September and its rainfall shifted from a symmetric to an asymmetric pattern with convection mostly south southeast. Meanwhile, storm slowed down 22 14 km h −1 for 12 upon leaving Taiwan, led heavy (>800 mm) serious flooding over low‐lying southwestern plains. Through simulation sensitivity tests using Cloud‐Resolving Storm Simulator at 3 grid size, this study shows that sudden temporary speed...

10.1002/jgrd.50351 article EN Journal of Geophysical Research Atmospheres 2013-04-23

The dynamics of composition and properties dissolved organic matter in soil depend on plant carbon inputs microbial degradation. However, uncertainties remain regarding the relative contributions different sources, i.e., from litter decomposition versus rhizodeposits, to matter, which may limit understanding dynamics. In this study, effects either rhizodeposition or (leaf, stem, rhizome, root litter) optical were estimated. Rhizodeposition P. australis had significant its variation was...

10.1016/j.ecolind.2022.109275 article EN cc-by-nc-nd Ecological Indicators 2022-08-11

The Tibetan Plateau (TP), known as the third pole, is highest plateau in world. It has numerous wetlands, which are important ecological security barriers and plays an role mitigating global climate change. This paper employed breaks for additive seasonal trend (BFAST) algorithm mutation detection of monthly normalized difference vegetation index (NDVI) wetlands. In addition, correlation analysis residual were used to study response change human activities NDVI alpine wetland TP during...

10.3389/fevo.2023.1113802 article EN cc-by Frontiers in Ecology and Evolution 2023-01-19

Convolutional neural networks (CNNs) have achieved great progress in the classification of surface objects with hyperspectral data, but due to limitations convolutional operations, CNNs cannot effectively interact contextual information. Transformer succeeds solving this problem, and thus has been widely used classify recent years. However, huge computational load poses a challenge semantic segmentation tasks. In addition, use single discards local correlation, making it ineffective for...

10.3390/rs15133366 article EN cc-by Remote Sensing 2023-06-30

A novel multi-principal element alloy was developed by integrating oxygen incorporation with dual-phase supra-nanostructuring to boost catalytic efficacy due its abundant, unique next-nearest oxygen-coordinated active sites in interfaces.

10.1039/d4ee03150d article EN Energy & Environmental Science 2024-01-01

Organic–inorganic perovskite solar cells have seen tremendous developments in recent years. As a hole transport material, 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (Spiro-OMeTAD) is widely used n–i–p cells. However, it may lead to the film degradation due dopant lithium bis((trifluoromethyl)sulfonyl)amide (Li-TFSI), which has strong hydrophilicity. Cu9S5 considered as superior p-type also favorable energy level matching with highest occupied molecular orbital of...

10.1021/acsami.8b08888 article EN ACS Applied Materials & Interfaces 2018-08-28

The use of remote sensing imagery has significantly enhanced the efficiency building extraction; however, precise estimation height remains a formidable challenge. In light ongoing advancements in computer vision, numerous techniques leveraging convolutional neural networks and Transformers have been applied to imagery, yielding promising outcomes. Nevertheless, most existing approaches directly estimate without considering intrinsic relationship between semantic segmentation estimation....

10.3390/rs15235552 article EN cc-by Remote Sensing 2023-11-29

Three deep-blue fluorescent 9,10-bis(4-tert-butylphenyl)phenanthrenes with diphenyl, -naphthyl, and -pyrenyl moieties at C3 C6 positions were synthesized used as the host for doped blue devices; one of these devices reveals excellent external quantum efficiency 7.7% current 9.8 cd A−1 low roll-off, color coordinates (0.14, 0.14) long operational lifetime.

10.1039/c1cc12875b article EN Chemical Communications 2011-01-01

Fluctuation range and frequency are two important components of water level fluctuation, but their effects on wetland plants have not been evaluated separately. We subjected eight species to a control treatment with static fluctuation treatments different ranges or frequencies examine plant growth. Acorus calamus, Butomus umbellatus Iris wilsonii showed high survival rates in all various frequencies. Their were higher at the medium than low frequencies, suggesting beneficial frequency. In...

10.1371/journal.pone.0220231 article EN cc-by PLoS ONE 2019-07-25

Abstract Solar‐Induced chlorophyll Fluorescence (SIF) from the TROPOspheric Monitoring Instrument (TROPOMI) with substantially improved spatiotemporal resolutions provides a new potential to improve satellite‐based phenology monitoring. The performance of TROPOMI SIF for tracking vegetation photosynthetic phenology, and how it compares conventional indices (VIs)‐based approaches, however, have not been adequately assessed. Total canopy SIF, as better proxy Gross Primary Productivity (GPP)...

10.1029/2022jg007369 article EN Journal of Geophysical Research Biogeosciences 2023-06-01

Abstract Typhoon Morakot struck Taiwan during 7–9 August 2009 and became the deadliest tropical cyclone (TC) in five decades by producing up to 2635 mm of rain 48 h, breaking world record. The extreme rainfall resulted from strong interaction among several favorable factors that occurred simultaneously. These large scale small include following: 1) weak environmental steering flow linked evolution monsoon gyre consequently slow TC motion; 2) a moisture surge due low-level southwesterly flow;...

10.1175/waf-d-21-0197.1 article EN Weather and Forecasting 2022-09-06

Elevation can greatly affect both intensity and duration of flooding in riparian areas, may thus the performance plants distributed therein. However, few studies have examined over elevation difference. This study compared growth reproductive traits populations species Polygonum hydropiper at low high elevations 10 different locations hydro-fluctuation belt Three Gorges Reservoir Region, China. Both location interaction between had significant effects on almost all reproduction P....

10.1016/j.gecco.2020.e01156 article EN cc-by-nc-nd Global Ecology and Conservation 2020-06-11
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