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    FAIR-DENSITY PARITY-CHECK CODING AND DECODING
    3.
    发明申请
    FAIR-DENSITY PARITY-CHECK CODING AND DECODING 有权

    公开(公告)号：US20250141471A1

    公开(公告)日：2025-05-01

    申请号：US18927527

    申请日：2024-10-25

    Applicant: Northeastern University

    Inventor： Hessam Mahdavifar

    IPC: H03M13/11

    Abstract: Error-corrected communication is provided. A base matrix is constructed. The base matrix comprises a plurality of columns. A plurality of permutations is applied to the base matrix to obtain a plurality of permuted matrices. A parity-check matrix is generated by concatenating the plurality of permuted matrices. A plurality of codewords is generated based on the parity-check matrix. A message is encoded according to the plurality of codewords. The encoded message is transmitted via a noisy channel.

    THREE-DIMENSIONAL LOADING STRUCTURE OF ULTRA-LARGE PHYSICAL SIMULATION FACILITY FOR DEEP ENGINEERING DISASTERS
    6.
    发明申请
    THREE-DIMENSIONAL LOADING STRUCTURE OF ULTRA-LARGE PHYSICAL SIMULATION FACILITY FOR DEEP ENGINEERING DISASTERS 有权

    公开(公告)号：US20250086333A1

    公开(公告)日：2025-03-13

    申请号：US18031457

    申请日：2023-02-08

    Applicant: Northeastern University

    Inventor： Xiwei ZHANG ,  Xiating FENG ,  Chunyuan XUE ,  Lei SHI

    IPC: G06F30/13 ,  F15B1/04 ,  F15B15/14 ,  G01M99/00

    Abstract: Provided is a three-dimensional loading structure of an ultra-large physical simulation facility for deep engineering disasters. The three-dimensional loading structure comprises a horizontal ultra-large reaction frame, a vertical ultra-large reaction frame, ultra-long stroke lifting and locking hydraulic cylinders, five array distributed hydraulic actuator groups and a linear distributed hydraulic actuator group, wherein the horizontal ultra-large reaction frame adopts a frame structure being formed by splicing eight segments of arch beams, circular in an outer part and square in an inner part, and wrapped with prestressed carbon fibers, and the vertical ultra-large reaction frame adopts a double-beam four-column preload frame structure; the five array distributed hydraulic actuator groups are distributed around the horizontal ultra-large reaction frame and at a top of the vertical ultra-large reaction frame, and the linear distributed hydraulic actuator group is located at a center of a bottom of the vertical ultra-large reaction frame.

    Selectivity screening for antimicrobial compounds
    7.
    发明授权
    Selectivity screening for antimicrobial compounds 有权

    公开(公告)号：US12247245B2

    公开(公告)日：2025-03-11

    申请号：US17262031

    申请日：2019-05-24

    Applicant: NORTHEASTERN UNIVERSITY

    Inventor： Kim Lewis ,  Anthony D'Onofrio ,  Thomas Curtis ,  Charlotte Berkes

    IPC: C12Q1/18

    Abstract: Assays for compounds having a desired biological activity against one but not both of a pair of microorganism species utilize separately detectable labels. The first and second microorganisms are different from each other, the first microorganisms exhibit a first detectable label, the second microorganisms exhibit a second detectable label different from the first detectable label, and neither of the labels interferes with detection of the other label. In various embodiments, the first and second microorganisms are incubated with a candidate compound or a producer thereof. The different labels permit isolation of microorganisms exhibiting one of the labels but not the other, indicating the desired activity, and the compound responsible for this differential response is isolated.

    Fault signal locating and identifying method of industrial equipment based on microphone array
    8.
    发明授权
    Fault signal locating and identifying method of industrial equipment based on microphone array 有权

    公开(公告)号：US12228476B2

    公开(公告)日：2025-02-18

    申请号：US17781475

    申请日：2021-07-29

    Applicant: Northeastern University

    Inventor： Feng Luan ,  Xu Li ,  Ziming Zhang ,  Yan Wu ,  Yuejiao Han ,  Dianhua Zhang

    IPC: G01M99/00 ,  G01H17/00 ,  G06F18/2131 ,  G06F18/24 ,  G06N3/04 ,  G06N3/044 ,  G06N3/045 ,  G06N3/0464 ,  G06N3/08 ,  H04R1/40

    Abstract: Provided is a fault signal locating and identifying method of industrial equipment based on a microphone array. The method includes the steps of: acquiring sound signals and dividing the acquired signals into a training set, a verifying set and a test set; performing feature extraction on the sound signals in the training set, and extracting a phase spectrogram and an amplitude spectrogram of a spectrogram; sending an output of a feature extraction module, as an input, to a CNN, and in each layer of the CNN, learning a translation invariance in the spectrogram by using a 2D CNN; in between the layers of the CNN, normalizing the output by using a batch normalization, and reducing a dimension by using a maximum pooling layer along a frequency axis; sending an output from the layers of the CNN to layers of RNN; using a linear activation function; and inputting an output of a full connection layer to two parallel full connection layer branches for fault identification and fault location, respectively.

    Nitrogen-driven desorption by a diazirine
    9.
    发明授权
    Nitrogen-driven desorption by a diazirine 有权

    公开(公告)号：US12181440B2

    公开(公告)日：2024-12-31

    申请号：US17881943

    申请日：2022-08-05

    Applicant: Northeastern University

    Inventor： Roger W. Giese ,  Pushkar Kulkarni

    IPC: G01N27/64 ,  G01N33/68 ,  H01J49/00

    Abstract: Disclosed is a method of desorbing an adsorbed material by subjecting to energy a diazirine adsorbed on a solid surface or a layer on the solid surface, which causes the diazirine to form a carbene and nitrogen gas; and using the energy of the resultant nitrogen gas to desorb the adsorbed material from the solid surface or a layer on the same. Also disclosed is a method of reacting the resultant carbene with (a) a material in the gas phase proximal to the first solid surface; (b) a material adsorbed on a second solid surface proximal to the first solid surface; or (c) a second solid surface proximal to the first solid surface.

    Zero power micromechanical switch-based sensing and monitoring system
    10.
    发明授权
    Zero power micromechanical switch-based sensing and monitoring system 有权

    公开(公告)号：US12169145B2

    公开(公告)日：2024-12-17

    申请号：US17422861

    申请日：2020-01-21

    Applicant: Northeastern University

    Inventor： Matteo Rinaldi ,  Zhenyun Qian ,  Vageeswar Rajaram ,  Sungho Kang

    IPC: G01J5/00 ,  G01J5/02 ,  G01J5/03 ,  G01J5/08 ,  G01J5/0806

    Abstract: Zero-power system for remote monitoring of heat sources is provided. The systems detect failure indicators of remote equipment including power substations, oil rigs, large inaccessible machinery in a factory, and communications equipment. The systems also can be used to detect the presence of people in buildings or in other locations, so as to improve HVAC utilization in large buildings. When the zero-power monitoring systems detect heat sources, such as the presence of people, failure indicators, or a targeted environmental signal, a circuit is closed using the energy of the detected radiation, and activating an RFID tag, a radio transmitter, or an alarm. The monitoring systems can remain deployed and active for many years without the need for battery replacement.

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