Abstract: Systems and methods which provide a motion sensor data-driven framework for sports action recognition and/or assessment using a wearable sensor are described. A motion sensor data-driven system may provide real-time kinematical analysis to athletes engaged in active competition or training sessions under typical competition or training conditions. Analysis of motion sensor data provided according to embodiments may operate to recognize instances of one or more particular sports actions performed by an athlete and/or assess the skill of the athlete from analysis of one or more sports actions. A motion sensor data processing platform of embodiments of a motion sensor data-driven system may comprise a processor-based system configured to receive and analyze data regarding the movement of an athlete's limb reported by a wearable sensor device comprising a micro inertial measurement unit configuration for capturing and reporting data regarding the movement of an athlete's limb.
Type:
Grant
Filed:
June 21, 2018
Date of Patent:
April 30, 2024
Assignee:
City University of Hong Kong
Inventors:
Yufan Wang, Wen Jung Li, Ho Man Chan, Guanglie Zhang
Abstract: Methods are provided for diagnosing pregnancy-associated disorders, determining allelic ratios, determining maternal or fetal contributions to circulating transcripts, and/or identifying maternal or fetal markers using a sample from a pregnant female subject. Also provided is use of a gene for diagnosing a pregnancy-associated disorder in a pregnant female subject.
Type:
Grant
Filed:
January 23, 2019
Date of Patent:
April 30, 2024
Assignee:
The Chinese University of Hong Kong
Inventors:
Yuk-Ming Dennis Lo, Rossa Wai Kwun Chiu, Kwan Chee Chan, Peiyong Jiang, Bo Yin Tsui
Abstract: The present invention provides a graph-based prostate diagnosis network (GPD-Net) and a method for using the same to predict a prostate health status of a patient from a 3D magnetic resonance imaging (MRI) scan containing a plurality of 2D MRI slices. The GPD-Net only demands patient-level annotations of MRI scan for training by formulating the diagnosis task of 3D prostate MRI scan in a multi-instance learning (MIL) strategy, and regarding each 2D MRI slice in the 3D prostate MRI scan as an instance. The GPD-Net includes a plurality of importance-guided graph convolutional layers to explore the diagnostic information with the importance-based topology. The present invention provides accurate prediction of prostate diseases and achieve more reliable diagnosis from MRI scans, therefore can effectively alleviate the workload of clinician in viewing the slices of MRI scan.
Abstract: The present invention provides a flexible piezoelectric composite including a three-dimensional interconnected piezoelectric ceramic framework based on a porous organic template with sufficient stiffness and infiltrated with a flexible polymer matrix. A method for fabricating the flexible piezoelectric composition is also described herein.
Abstract: A method of measuring cross-correlation or similarity between input features and filters of neural networks using an RRAM-crossbar architecture to carry out addition/subtraction-based neural networks for in-memory computing. The correlation calculations use L1 norm operations of AdderNet. The RCM structure of the RRAM-cross bar has storage and computing collocated, such that processing is done in the analog domain with low power, low latency and small area. In addition, the impact due to the nonidealities of RRAM device can be alleviated by the implicit ratio-based feature of the structure.
Type:
Application
Filed:
September 28, 2023
Publication date:
April 18, 2024
Applicant:
The University of Hong Kong
Inventors:
Yuan REN, Ngai WONG, Can LI, Zhongrui ZHANG
Abstract: An asymmetric tetradentate metal complex of a N{circumflex over (?)}C{circumflex over (?)}C{circumflex over (?)}N comprising tetradentate ligand has a metal connected to binding sites which are connected to each other via three or four covalent bonds that can be either single or double bonds with bridging linkers reside between C{circumflex over (?)}C and C{circumflex over (?)}N moieties. These linkers result in three-dimension metal complexes with distorted square planar geometries. The four donor atoms coordinate to a metal center. Upon metal binding a 5-6-6 membered metallocycle is formed upon chelation including a first nitrogen donor bond, a first metal-carbon bond, a second metal-carbon bond, and a second nitrogen donor bond. The light emission from these metal complexes can be tuned by the ligand structure over the entire visible spectrum.
Type:
Grant
Filed:
January 18, 2019
Date of Patent:
April 16, 2024
Assignee:
The University of Hong Kong
Inventors:
Chi Ming Che, Wai Hung Ang, Mao Mao, Gang Cheng
Abstract: The present invention provides a task interaction network which can jointly perform, based on multi parametric-magnetic resonance imaging scan images, a segmentation task to locate prostate cancer areas and a classification task to access aggressiveness of lesions. The task interaction network comprises a backbone network, an auxiliary segmentation branch, a classification branch having a lesion awareness module, and a main segmentation branch having a category allocation module. The auxiliary segmentation branch is utilized to predict an initial lesion mask as location guidance information for the classification branch to perform the classification task. The lesion awareness module is configured to refine the initial lesion mask to make it more accurate. Moreover, weights used in classification branch can serve as the category prototypes for generating category guidance features via the category allocation module to assist the main segmentation branch to perform the segmentation task.
Abstract: A cryo formulation-based microneedle device for ocular delivery of bioactive therapeutic agents. The microneedle device includes: one or more microneedle patches each including an array of miniaturized needles, wherein each miniaturized needle defining a base end and a tip; and a substrate to which the base end of the array of miniaturized needles is attached or integrated thereto; wherein the microneedle patch is in a cryo status; wherein each of the one or more microneedle patch is adapted to be applied on cornea of an eye, in which the miniaturized needles penetrates into the eye; and wherein the miniaturized needles is further arranged to melt so as to release one or more bioactive therapeutic agents into the eye to achieve a targeted therapeutic effect.
Abstract: The present invention provides a new wideband mm-wave end-fire magneto-electric dipole antenna with excellent beam-scanning radiation patterns and reasonably low side lobes and low cross polarizations. The antenna comprises: an asymmetrical substrate integrated coaxial line feed comprising: a first substrate having a first substrate thickness; a second substrate placed on the first substrate and having a second substrate thickness different from the first substrate thickness; a conductive signal line deposited on an upper surface of the first substrate; and two rows of waveguiding vias positioned along and at both sides of the signal line respectively; a ?-shaped probe adopted to excite the antenna; a pair of shorted planar parallel plates serving as magnetic dipole and two pair of vertical conductive vias serving as electric dipole; and a folded vertical reflector consisting of conductive vias and strips is added to reduce the back radiation and to improve the gain of antenna.
Abstract: An electrotactile apparatus has an electrode-array unit and a driver unit for generating a haptic feedback to a user. The electrode-array unit uses electrodes to electro-stimulate the user's skin with pulsed voltage signals generated by the driver unit, inducing excitation currents flowing in the user to generate the haptic feedback. The driver unit is self-powered or wirelessly powered for supporting untethered electrotactile stimulation to the user. A common counter electrode installed on the driver unit contacts the user's skin and collects the excitation currents returned from the user. Advantageously, the common counter electrode is located on an outer surface of the driver unit and the driver unit is substantially flexible, facilitating the common counter electrode to seamlessly contact the user's skin for achieving a stable electrode-skin interface while positioning the driver unit as a whole on the user's skin to provide untethered virtual touching experience to the user.
Abstract: A tricuspid valve apparatus may include a frame and an associated neo-prosthetic valve. The frame acts as a stabilizing structure that extends cephalad into the morphologic or functional right atrium (upstream) and caudally into the morphologic or functional right ventricle (downstream). The frame comprises a strutted atrial dome that conforms to the atrium without obstruction of blood flow from the incoming great veins (i.e. superior vena cava and inferior vena cava) or other anomalous veins and/or tributaries. The frame further comprises ventricular struts to be placed within the right ventricle to secure the neo-prosthetic valve in a desired position. The assembly of the frame and valve is collapsible so that prior to deployment the assembly is placed in a vascular catheter, and then self-expands upon release in the heart.
Type:
Grant
Filed:
August 11, 2020
Date of Patent:
April 2, 2024
Assignee:
The Chinese University of Hong Kong
Inventors:
Erik Yee Mun George Fung, Tze Chuen Ng, Philip Wai Yan Chiu
Abstract: A method for forming a complex shape three-dimensional ceramic article by printing a first layer of a first material having a first fraction of first ceramic particles and a first fraction of a first polymeric ceramic precursor. A second layer is printed such that it is at least partially disposed on the first layer of a second material having a second fraction of second ceramic particles and a second fraction of a second polymeric ceramic precursor. A composite of the first layer and the second layer is heated at a temperature sufficient to decompose the first and second polymeric ceramic precursors and sinter the article. During the sintering process, the first and second layers with different fractions of ceramic particles undergo different degrees of shrinkage, resulting in a tuneable mismatch of the bilayer structure and accurately achieving a targeted geometry.
Type:
Grant
Filed:
October 27, 2021
Date of Patent:
April 2, 2024
Assignee:
City University of Hong Kong
Inventors:
Jian Lu, Lei Wan, Zhou Chen, Zhengyi Mao
Abstract: A battery includes a plurality of energy storage units, a flexible linkage arranged to physically and electrically connect each adjacent pair of energy storage units, and an encapsulation arranged to encapsulate the energy storage units and the linkages. The energy storage units are movable with respect to each other via the flexible linkage within each adjacent pair of energy storage units in the encapsulation.
Abstract: A fog-based self-powered system for collecting atmospheric water and generating electricity is presented. The system includes a mesh-based fog harvester for accumulating water droplets from atmospheric moisture. A droplet distributor receives accumulated water droplets from the mesh-based fog harvester. A droplet electrical generator harvests energy from the water droplets accumulated in the droplet distributor. The droplet electrical generator includes an electret surface for receiving the water droplets from the droplet distributor and at least two electrodes. A water reservoir receives water droplets from the droplet electrical generator.
Type:
Grant
Filed:
November 23, 2021
Date of Patent:
March 26, 2024
Assignee:
City University of Hong Kong
Inventors:
Zuankai Wang, Steven Wang, Chen Ling, Xiaoxue Yao, Yat Hei Wong
Abstract: A woven, water-vapor permeable, water-responsive, shape-memory wool fabric that possesses switchable pore size and shape responsive to varying water content absorbed thereby is demonstrated, more particularly, the wool fabric exerts corresponding thermal and water vapor regulations between the wearer and the surroundings with respect to the temperature and humidity changes.
Type:
Grant
Filed:
October 18, 2021
Date of Patent:
March 26, 2024
Assignees:
City University of Hong Kong, The Hong Kong Polytechnic University
Abstract: A triboelectric generator includes a first triboelectric material providing a first surface, a first electrode attached to the first triboelectric material, a second triboelectric material providing a second surface for contacting the first surface, and a second electrode attached to the second triboelectric material. The second triboelectric material is different from the first triboelectric material. The first electrode and the second electrode are arranged to be electrically connected via an electrical connection. The first triboelectric material comprises a polymer material and an organic semiconductor material arranged in the polymer material.
Abstract: A controlled oxidizing method is provided for preparing a high-performance nickel-rich lithium ion battery cathode material having a composition of LiNixM1-xO2, where 0.6<x<0.9, and M is one or more metals selected from the group consisting of Co, Mn, Fe, Ti, Zr, V, and Cr. The method comprises combining a water-soluble salt precursor of nickel and a water-soluble salt precursor of the one or more M metals with one or more oxidizing agents to form an aqueous solution. The aqueous solution is alkalized to a selected pH value to produce precipitated precursors. The precipitated precursors are mixed with a lithium precursor to form a lithiated precursor. The lithiated precursor is calcined to form the nickel-rich lithium ion battery cathode material.
Abstract: A dual-band HP omnidirectional antenna includes an electrically small (ES) first omnidirectional loop antenna for a first band, and a second omnidirectional loop antenna for a second band. The first omnidirectional loop antenna and the second omnidirectional loop antenna are capable of operating independently in the first band and the second band. A loading effect of the second omnidirectional loop antenna adapted to suppress a higher-order mode of the first omnidirectional loop antenna.
Type:
Grant
Filed:
March 3, 2022
Date of Patent:
March 26, 2024
Assignee:
City University of Hong Kong
Inventors:
Kwok Wa Leung, Peng Fei Hu, Yong Mei Pan, Shao Yong Zheng
Abstract: An antenna includes, from top to bottom and bonded together, an upper substrate, a bonding film, a ground plane and a lower substrate. A parasitic patch arrangement and two pairs of radiator arms associated therewith are arranged on an upper surface of the upper substrate. One radiator arm pair are responsive to a differential signal received through respective vias, which extend through the upper substrate, and respective feed lines, which are arranged on a lower surface of the upper substrate, to emit a first radio frequency signal. The other radiator arm pair are responsive to another differential signal received through respective vias, which extend through the substrates, and respective feed lines, which are arranged on a lower surface of the lower substrate, to emit a second radio frequency signal orthogonal to the first radio frequency signal. A gap between one radiator arm pair intersects that between the other pair.
Abstract: A method of preventing or treating a subject suffering from a flavivirus infection by administering an effective amount of berbamine or its analogue to the subject, berbamine has a structure of Formula (I), wherein the flavivirus infection is caused by Japanese encephalitis virus, Zika virus or Dengue virus. A method of inhibiting the entry of a flavivirus, an enterovirus and/or a lentivirus into host cells includes contacting the host cells with an effective amount of berbamine of its analogue, berbamine has a structure of Formula (I), wherein the flavivirus is Japanese encephalitis virus, Zika virus or Dengue virus.