National Central University was founded in 1915 with roots from 258 CE in mainland China. After NCU in Nanjing was renamed Nanjing University in 1949, NCU was re-established in Taiwan in 1962. The school was initially located in Miaoli, but was relocated to Zhongli in 1968, and developed into a comprehensive university. It has now become Taiwan's leading school in the fields of drama, film studies, cultural studies, sex and gender studies, Hakka studies, geophysics, space science, remote sensing, astronomy, optoelectronics, nano scitech, and business management. In 2001, NCU was selected by the Ministry of Education as one of the eleven research-oriented universities in Taiwan.NCU now has eight colleges in different areas, including College of Liberal Arts, College of Science, College of Engineering, College of Electrical Engineering and Computer Science, College of Biomedical Science and Engineering, College of Earth science, College of Management, and College of Hakka Studies, also with areas in sociology, law and government studies, etc. Wikipedia.
National Central University | Date: 2015-10-30
The present invention provides a method for identifying images of brain function. In the beginning, choosing one of the brain data collected by multichannel scalp EEG/MEG, and using a mode decomposition method to obtain a plurality of intrinsic mode functions for each brain data, transforming the intrinsic mode functions (IMFs) in the same frequency scale into a plurality of source IMFs across the cerebral cortex by a source reconstruction algorithm, and classifying each source IMF in the same frequency scale into a plurality of frequency regions corresponding to the different brain sites. Then, repeatedly choosing a source IMF, and obtaining an amplitude envelope line through each absolution value of the source IMF. Further to obtain a plurality of source first-layer amplitude IMFs decomposed from the function of the amplitude envelope line by the mode decomposition method. Until obtaining the source first-layer amplitude IMFs from each source IMF, classifying each source first-layer amplitude IMF in the same amplitude frequency scale into a plurality of amplitude frequency regions corresponding to the different brain sites. In the end, a brain amplitude modulation spectrum is provided for analyzing the relationship between each frequency region and each amplitude frequency region.
National Central University | Date: 2015-07-27
A liquid-cool Light Emitting Diodes light includes a light source having multiple LED units. A cooling unit includes a first cooling member connected to the first face of the light source, and a second cooling member connected to the second face of the light source. A cooling system has a cooling device, a first path and a second path. The first path of the cooling device is connected to two respective first ends of the first and second cooling members. The second path of the cooling device is connected to two respective second ends of the first and second cooling members. The heat generated from the LED units is efficiently removed and with small emitting area.
National Central University | Date: 2016-03-15
The invention provides a molecule carrier, comprising a metal-organic framework having an interior space and a surface of the metal-organic framework has a plurality of pores; and a molecule embedded in the interior space of the metal-organic framework. The invention also provides a method for preparing the molecule carrier by a de novo approach, comprising mixing a solution containing metal ions, an organic ligand, a molecule, and a surface coating agent to form an aqueous mixture. After incubating for a few minutes, the aqueous mixture is subjected to a drying process to obtain the molecule carrier.
Chiang C.-H.,National Central University
Nature Photonics | Year: 2016
An inverted bulk heterojunction perovskite–PCBM solar cell with a high fill factor of 0.82 and a power conversion efficiency of up to 16.0% was fabricated by a low-temperature two-step solution process. The cells exhibit no significant photocurrent hysteresis and their high short-circuit current density, fill factor and efficiency are attributed to the advantageous properties of the active layer, such as its high conductivity and the improved mobility and diffusion length of charge carriers. In particular, PCBM plays a critical role in improving the quality of the light-absorbing layer by filling pinholes and vacancies between perovskite grains, resulting in a film with large grains and fewer grain boundaries. © 2016 Nature Publishing Group
National Central University | Date: 2016-05-26
An apparatus and a method for noninvasive and caffless blood pressure measurement are provided. The apparatus includes: a photoplethysmography (PPG) amplitude calculation unit, a time difference calculation unit, a velocity calculation unit, and a calculation unit. The method includes the following steps: calculating amplitude differences between characteristic points of a PPG waveform; calculating differences between a time point of a peak of an electrocardiography (ECG) waveform and a time point of each of the characteristic points of the PPG waveform; calculating differences between time points of the characteristic points of the PPG waveform; performing calculation according to the length of a hand and an ECG-PPG time difference to obtain a pulse wave velocity (PWV); and performing calculation according to the PWV, one of the characteristic point amplitude difference, and one of the characteristic point time difference to obtain a systolic/diastolic blood pressure estimate.
National Central University | Date: 2016-01-31
A holographic device includes a holographic storage device, a shearing interferometer, and an optical receiver. The holographic storage device is configured to provide a disk with a reading light beam to make the reading light beam become a diffracted light beam after the reading light beam is diffracted in the disk. The shearing interferometer is configured to receive the diffracted light beam and to transform the diffracted light beam into a first light beam and a second light beam. The optical receiver is configured to receive the first light beam and the second light beam provided by the shearing interferometer.
National Central University | Date: 2016-01-31
A holographic storage disk includes a reflective layer, a storage layer, and quarter-wave plate. A storage layer is disposed on the reflective layer and includes a reflection-structure layer and photosensitive units. The reflection-structure layer has cavities, in which the reflection-structure layer is grid-shaped. The cavities penetrate the reflection-structure layer. The photosensitive units are disposed in the cavities. The quarter-wave plate is disposed between the reflective layer and the photosensitive units.
National Central University | Date: 2016-01-12
This invention discloses a system and a method for extracting VF signal in ECG recorded during uninterrupted CPR. The present invention provides a method for extracting a Ventricular fibrillation (VF) signal in Electrocardiography (ECG), comprising: receiving an ECG signal; adding a plurality of shadowing functions to the ECG signal, to obtain a plurality of modification signals; decomposing the plurality of modification signals by using an Empirical Mode Decomposition (EMD) method, to generate a plurality of Intrinsic Mode Functions (IMFs); calculating the sum of IMFs in different frequency regions based on time sequence, dividing by a number of the shadowing signal, to obtain a plurality of modification intrinsic mode functions; combining the plurality of modification IMFs with the same property, to obtain a shape function; modeling the shape functions to obtain a compression signal; and subtracting the compression signal from the ECG signal based on time sequence, to obtain the VF signal.
National Central University | Date: 2016-05-17
A three-dimensional positioning system includes establishing a geometric model for optical AND radar sensors, obtaining rational function conversion coefficients, refining the rational function model and positioning three-dimensional coordinates. The system calculates rational polynomial coefficients from a geometric model of optical AND radar sensors, followed by refining a rational function model by determined ground control points and object image space intersection. The system then measures one or more conjugate points on the optical and radar images. Finally, an observation equation is established by the rational function model to solve and display three-dimensional coordinates.
National Central University | Date: 2016-04-04
The present invention provides a diagram building system adapted for processing a signal with a time period. The diagram building system comprises a inputting device for receiving the signal; a computing device, dividing the signal into a plurality of window scales according to one of time interval scales; decomposing the window scales via HHT algorithm to generate a plurality of quantized windows according to different components; then, calculating the value of quantized windows with the same single-frequency component through a quantifying function to generate a plurality of specific frequency values; an outputting device, sequentially arranging the specific frequency values according to the time interval scales and the single-frequency components to form a visual diagram.