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: 2016-06-13
A feedback photoplethysmography measuring device is provided, including: a measuring device that measures a human body to obtain a photoplethysmography signal; an analog/digital conversion unit that converts the photoplethysmography signal measured by the measuring device to a photoplethysmography value which is a digital value; a variation-degree calculation unit that calculates a photoplethysmography variation value according to the photoplethysmography value converted by the analog/digital conversion unit; and a feedback emitted light amplitude adjustment unit that controls the measuring device according to a plurality of preset control values or the adjusted photoplethysmography variation value calculated by the variation-degree calculation unit, and adjusts the photoplethysmography variation value to a minimum variation value.
National Central University | Date: 2016-01-11
The invention provides a method for data analyzing. The method comprises receiving a data, and decomposing the data into a plurality of intrinsic mode functions (IMFs) by utilizing an empirical mode decomposition (EMD) method, wherein the IMFs are a value changes over time of the data in different frequencies. The method further comprises obtaining a plurality of probability density functions based on accumulating the distribution of each IMF according to a longest mean time scale, and generating an intrinsic probability distribution function (iPDF) component spectrum, wherein the iPDF component spectrum comprises the distribution of probability density functions between a frequency dimensional and a standard deviation dimensional. This invention result of the method can be used as a diagnosis tool implementing in a system.
National Central University and Chung Yuan Christian University | Date: 2016-01-29
A cell culture device includes a container having a surface and a plurality of nano-bristles immobilized to the surface. The nano-bristles are made of styrene copolymer or oligopeptide. A method of partially detaching stem cells from a cell culture device includes: seeding stem cells onto the plurality of nano-bristles, culturing the stem cells, detaching a portion of the stem cells from the nano-bristles by a change in temperature or a shear force, and harvesting the portion of the stem cells.
National Central University | Date: 2016-06-06
A method for monitoring and early warning of structural collapse, comprising following steps of: installing at least one electric field sensor in a monitoring area, wherein the at least one electric field sensor is used for measuring an electric field signal of the monitoring area; receiving the electric field signal and applying a signal analysis to the electric field signal; and issuing a warning signal when a critical transition feature occurs in the electric field signal to which the signal analysis is applied.
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.
National Central University | Date: 2016-06-14
A method of locating locking holes of an intramedullary nail includes taking an X-ray image of an intramedullary nail having two locking holes; connecting centroids of the locking hole contours and an X-ray source to define locking hole vectors and axial directions of the locking holes; calculating a first included angle and normal vector perpendicular to vectors connecting the X-ray source and the locking hole contour centroids; defining a cross product of the locking hole vector and the normal vector as a vector connecting centers of the locking holes, and calculating second and third included angles with the vector connecting the locking hole centers and the vectors connecting the X-ray source to the locking hole contour centroids; and locating the locking holes according to the first, second and third included angles, vectors connecting the X-ray source to the locking hole contour centroids, and a distance between the locking holes.
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: 2016-01-13
The invention provides a method for electric brain stimulator. In the beginning, obtaining a brain functional amplitude modulation spectrum, wherein the brain functional amplitude modulation spectrum is a relationship between carrier frequency and amplitude-frequency on different brain sites. Then selecting a first alternating current frequency, wherein the first alternating current frequency is determined by the amplitude-frequency in which the brain functional amplitude modulation spectrum display a maximum power relation value, or a maximum correlation value with any behavior index of behavior and cognitive functions. And selecting a second alternating current frequency, wherein the second alternating current frequency is determined by the carrier frequency in which the brain functional amplitude modulation spectrum display a maximum power relation value, or a maximum correlation value with any behavior index of behavior and cognitive functions. In the end, outputting an alternating current signal, the alternating current signal is generated based on a first cosine function of the first alternating current frequency, a second cosine function of the second alternating current frequency, or a combination of the first cosine function and the second cosine function.
National Central University | Date: 2016-12-26
A holographic storage layer includes a reflective structure and photosensitive units. The reflective structure is a grid-shaped structure and includes cavities. The photosensitive units are disposed in the cavities, in which each of the photosensitive units is surrounded by the reflective structure. First openings and second openings are defined by the reflective structure, and the photosensitive units are exposed by the first openings and the second openings respectively.
National Central University | Date: 2016-02-04
The invention discloses a method and a system for quickly and directly processing an original signal into a plurality of mode functions, the steps comprises: decomposing the original signal by Empirical Mode Decomposition (EMD) method to choose a first intrinsic mode functions (IMFs). Then, adding the plurality of level n conjugate masking functions, which are selected from a group of sinusoidal functions comprising the mean amplitude and the mean frequency of the first IMF, to the original signal individually to obtain level n mode functions, until the level n mode function is a monotonic function, wherein the plurality of mode functions are the IMFs between each frequency regions of the original signal. The invention not only includes the advantage of EMD analyzing, but also excludes the problem of mode mixing phenomenon which is caused by the intermittent disturbance.