Wei-Chih Chen

ORCID: 0000-0002-1127-9639
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Metal and Thin Film Mechanics
  • Diamond and Carbon-based Materials Research
  • GaN-based semiconductor devices and materials
  • Boron and Carbon Nanomaterials Research
  • Semiconductor materials and devices
  • Plasma Diagnostics and Applications
  • Energy Harvesting in Wireless Networks
  • RFID technology advancements
  • Rock Mechanics and Modeling
  • Drilling and Well Engineering
  • Speech Recognition and Synthesis
  • Indoor and Outdoor Localization Technologies
  • CCD and CMOS Imaging Sensors
  • Hydraulic Fracturing and Reservoir Analysis
  • Analog and Mixed-Signal Circuit Design
  • MXene and MAX Phase Materials
  • Seismic Imaging and Inversion Techniques
  • Hate Speech and Cyberbullying Detection
  • Structural Response to Dynamic Loads
  • Topic Modeling
  • Speech and dialogue systems
  • Human Mobility and Location-Based Analysis
  • Advanced ceramic materials synthesis
  • IPv6, Mobility, Handover, Networks, Security
  • Copper Interconnects and Reliability

National Taiwan University of Science and Technology
2007-2024

National Taiwan University
2024

University of Alabama at Birmingham
2018-2022

National University of Kaohsiung
2020

MingDao University
2007-2018

National Taipei University of Technology
2018

National Kaohsiung University of Applied Sciences
2016

Ming Chuan University
2010

Radio frequency identification has been developed and used in many applications the real world. Due to shared wireless channel between tags reader during communication, tag collision arbitration is a significant issue for reducing communication overhead. This paper presents novel anti-collision algorithm named New Enhanced Anti-Collision Algorithm (NEAA) using counters stack reduce probability of efficiently make it possible identify multiple passive timeslot. The upper bound total timeslots...

10.1109/tii.2009.2033050 article EN IEEE Transactions on Industrial Informatics 2009-11-17

This study investigated the engineering properties and durability of high-performance recycled aggregate concrete (HPRAC) specimens. The specimens were prepared using alkali-activated slag with varying proportions fly ash (FA) (Category 1) reactive MgO 2). first category included in four subcategories which FA replaced ground granulated blast furnace (GGBFS) binder at ratios 0%, 15%, 30%, 45% by weight. second three categories a group mixture containing 15% 85% GGBFS was modified 2.5%, 5%,...

10.1061/(asce)mt.1943-5533.0003420 article EN Journal of Materials in Civil Engineering 2020-08-23

Superhard boron-rich boron carbide coatings were deposited on silicon substrates by microwave plasma chemical vapor deposition (MPCVD) under controlled conditions, which led to either a disordered or crystalline structure, as measured X-ray diffraction. The control of structures was achieved solely the choice sample being placed directly top holder within an inset holder, respectively. carbon content in B-C bonded and 6.1 at.% 4.5 at.%, respectively, photoelectron spectroscopy. diffraction...

10.3390/ma13163622 article EN Materials 2020-08-16

Radio frequency identification has been developed for many years and it got much attention from researchers recently as there are lots of applications being used practically in the real world. Owing to shared wireless channel between tags reader during communication, tag collision arbitration is a significant issue reducing communication overhead. This paper presents novel anti-collision algorithm named EAA (enhanced algorithm) which based on ABS (Adaptive Binary Splitting) proposed by Myung...

10.1109/icsnc.2007.16 article EN 2007-08-01

This paper presents a continuous time lowpass sigma-delta ADC for LTE communication with chain of integrators and capacitive feedforward summation (CICFF) plus circuit - which is an ideal function implementation in low power applications. The signals achieved by capacitors plus, without the essential thing any extra active components can be used electroencephalogram (EEG) or electrocardiogram (ECG) signal acquisition systems. quantizer uses 1-bit comparator achieve high linearity easily....

10.1109/cisp.2014.7003940 article EN 2014-10-01

This study focuses on presenting a development trend from the perspective of data-oriented evidence, especially open data and technologies, as those numbers can verify prove current technology trends user information requirements. According to practical progress Dr. What-Info I II, this paper continues develop III. Moreover, big technology, MapReduce paralleled decrement mechanism cloud agent CEOntoIAS, which is supported by Hadoop-like framework, Software R, time series analysis are adopted...

10.3390/app8060947 article EN cc-by Applied Sciences 2018-06-07

Superhard boron-carbon materials are of prime interest due to their non-oxidizing properties at high temperatures compared diamond-based and non-reactivity with ferrous metals under extreme conditions. In this work, evolutionary algorithms combined density functional theory have been utilized predict stable structures for the system, including elusive superhard BC5 compound. We report on microwave plasma chemical vapor deposition a silicon substrate series composite containing amorphous...

10.3390/ma11081279 article EN Materials 2018-07-25

A feedback-controlled high power impulse magnetron sputter deposition system was used to deposit CrNx thin films in a reactive mode. The plasma emission intensity of Cr at 358 nm monitored and the amount gas N2 precisely controlled have stable during process. By controlling input, giving different (neutral state) intensities, various were obtained fixed duty cycle 4.5% under characteristics mechanical properties also investigated. results show that 40% relative between pure metal (100%)...

10.1116/1.4862147 article EN Journal of Vacuum Science & Technology A Vacuum Surfaces and Films 2014-01-21

A novel circularly polarized radio frequency identification (RFID) tag antenna with a capacitive coupling-feed mounted on metallic plane is proposed. The compact square-ring patch two pair of T-shaped slots to obtain circular polarization (CP) radiation. conjugate match an Alien Higgs-4 chip impedance 8-j149 Ω at 925 MHz obtained by connecting short-circuited microstrip lines in series. By tuning the proper lengths for and its coupling gap distance, easy matched desired impedance. Tests RFID...

10.1109/apcap.2016.7843128 article EN 2016-07-01

CrN x thin films have been deposited on silicon wafer, 304 stainless steel, and tungsten carbide substrates using pulsed DC reactive magnetron sputtering. A 10 kHz unipolar mode a N 2 /Ar ratio of 17.5% were used. During the deposition, substrate was not biased heated during entire deposition time 30 min. The microstructure, crystalline phase, mechanical properties obtained examined to investigate effect duty cycle. results show that maximum current power density increase with decreasing...

10.7567/jjap.52.11nb08 article EN Japanese Journal of Applied Physics 2013-11-01

Using the traditional assessment method considering single-input and single-output variables, correlation between ignition loss maximum temperature is usually used to evaluate fire-damage degree of concrete. To improve this method, multi-input multi-output variables are examined in study using a newly-developed experiment consisting thermo-induced damage test, ultrasonic pulse (UP) measurement technique, uniaxial compressive test. The input include designed strength, rate heating,...

10.3390/app8071107 article EN cc-by Applied Sciences 2018-07-09

Speech Integrated Large Language Models (SILLMs) combine large language models with speech perception to perform diverse tasks, such as emotion recognition speaker verification, demonstrating universal audio understanding capability. However, these may amplify biases present in training data, potentially leading biased access information for marginalized groups. This work introduces a curated spoken bias evaluation toolkit and corresponding dataset. We evaluate gender SILLMs across four...

10.48550/arxiv.2407.06957 preprint EN arXiv (Cornell University) 2024-07-09

Warning: This paper may contain texts with uncomfortable content. Large Language Models (LLMs) have achieved remarkable performance in various tasks, including those involving multimodal data like speech. However, these models often exhibit biases due to the nature of their training data. Recently, more Speech (SLLMs) emerged, underscoring urgent need address biases. study introduces Spoken Stereoset, a dataset specifically designed evaluate social SLLMs. By examining how different respond...

10.48550/arxiv.2408.07665 preprint EN arXiv (Cornell University) 2024-08-14

10.1109/slt61566.2024.10832259 article EN 2022 IEEE Spoken Language Technology Workshop (SLT) 2024-12-02
Coming Soon ...