National Taiwan University of Science and Technology

About: National Taiwan University of Science and Technology is a education organization based out in Taipei, Taipei, Taiwan. It is known for research contribution in the topics: Fuzzy logic & Control theory. The organization has 16288 authors who have published 21577 publications receiving 426294 citations. The organization is also known as: Taiwan Tech & Taiwantech.

A New Method to Forecast Enrollments Using Fuzzy Time Series

Abstract: In recent years, many methods have been proposed for forecasting enrollments based on fuzzy time series. However, the forecasting accuracy rates of the existing methods are not good enough. In this paper, we present a new method to forecast enrollments based on fuzzy time series. The proposed method belongs to the first order and time-variant methods. The his- torical enrollments of the university of Alabama are used to illustrate the forecasting process of the proposed method. The proposed method can get a higher forecasting accuracy rate for fore- casting enrollments than the existing methods.

Some design considerations on the electrostatically actuated microstructures

Abstract: An analytical approach to the static, dynamic, and stability analysis of the microstructures subjected to electrostatic forces is presented in this paper. The present model has the advantages of full analytical description, explicit physical meanings, and agrees well with the reality under small deflection. The stiffness of a microstructure will be softened periodically with the frequency of applied voltage and the variation increases with increasing the magnitude of applied voltage. The dynamic instabilities may occur below the pull-in voltage. The instable regions appear not only near the multiples of resonant frequencies but also near some fractions of resonant frequency differences. Furthermore, the instable regions expand with increasing the applied voltage.

Blending Cr2O3 into a NiO-Ni electrocatalyst for sustained water splitting

Abstract: The rising H2 economy demands active and durable electrocatalysts based on low-cost, earth-abundant materials for water electrolysis/photolysis. Here we report nanoscale Ni metal cores over-coated by a Cr2O3-blended NiO layer synthesized on metallic foam substrates. The Ni@NiO/Cr2O3 triphase material exhibits superior activity and stability similar to Pt for the hydrogen-evolution reaction in basic solutions. The chemically stable Cr2O3 is crucial for preventing oxidation of the Ni core, maintaining abundant NiO/Ni interfaces as catalytically active sites in the heterostructure and thus imparting high stability to the hydrogen-evolution catalyst. The highly active and stable electrocatalyst enables an alkaline electrolyzer operating at 20 mA cm−2 at a voltage lower than 1.5 V, lasting longer than 3 weeks without decay. The non-precious metal catalysts afford a high efficiency of about 15 % for light-driven water splitting using GaAs solar cells.