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    METHOD AND APPARATUS FOR ACOUSTIC DETECTION OF MINES AND OTHER BURIED MAN-MADE OBJECTS
    31.
    发明专利
    METHOD AND APPARATUS FOR ACOUSTIC DETECTION OF MINES AND OTHER BURIED MAN-MADE OBJECTS 未知

    公开(公告)号：IL134006D0

    公开(公告)日：2001-04-30

    申请号：IL13400698

    申请日：1998-07-15

    Applicant: STEVENS INST TECHNOLOGY

    IPC: F41H11/12 ,  G01N29/00 ,  G01N29/11 ,  G01N29/28 ,  G01N29/40 ,  G01N29/46 ,  G01N29/48 ,  G01S13/88 ,  G01S15/02 ,  G01S15/04 ,  G01S15/88 ,  G01V1/00 ,  G01V3/12 ,  G01S

    Abstract: A device (10) which employs an acoustic signal having one or more frequencies for penetrating into ground, water, or sediments and vibrating a compliant buried object (8) is provided. When these acoustic signals encounter an acoustically compliant object (8) such as a mine, the acoustic signals vibrate the compliant object (8), leading to a vibration of the compliant object (8) against the boundaries of the surrounding medium such as ground sediment, creating a nonlinear distortion of the probing signal including the generation of harmonics and acoustic waves with combination frequencies (nonlinear signals). These nonlinear vibrating signals are received from the surface by a sensor (20). The amplitude of the measured nonlinear signals indicates the presence of an acoustically compliant object (8) such as a mine. The present invention also relates to a method and apparatus which emits an electromagnetic RF probing signal and acoustic or vibration signal (modulating signal), detects the reflected electromagnetic signal from the buried object (8), and processes the received signal, identifying the modulation caused by vibration.

    GLOW PLASMA DISCHARGE DEVICE
    32.
    发明专利
    GLOW PLASMA DISCHARGE DEVICE 未知

    公开(公告)号：HK1029222A1

    公开(公告)日：2001-03-23

    申请号：HK00108480

    申请日：2000-12-28

    Applicant: STEVENS INST TECHNOLOGY

    Inventor： KUNHARDT ERICH E ,  BECKER KURT H

    IPC: H01J37/32 ,  H05H1/24 ,  H05H1/46 ,  H01J

    Abstract: A method and apparatus for stabilizing glow plasma discharges by suppressing the transition from glow-to-arc includes a perforated dielectric plate having an upper surface and a lower surface and a plurality of holes extending therethrough. The perforated dielectric plate is positioned over the cathode. Each of the holes acts as a separate active current limiting micro-channel that prevents the overall current density from increasing above the threshold for the glow-to-arc transition. This allows for a stable glow discharge to be maintained for a wide range of operating pressures (up to atmospheric pressures) and in a wide range of electric fields include DC and RF fields of varying strength.

    AUTOMATED TEACHING SYSTEM USING DECLARATIVE PROBLEM SOLVING APPROACH
    35.
    发明专利
    AUTOMATED TEACHING SYSTEM USING DECLARATIVE PROBLEM SOLVING APPROACH 未知

    公开(公告)号：CA2847769A1

    公开(公告)日：2015-03-27

    申请号：CA2847769

    申请日：2014-03-31

    Applicant: STEVENS INST TECHNOLOGY

    Inventor： MIASNIKOV ALEXEI ,  MYASNIKOV ALEXEY

    IPC: G09B7/04 ,  G09B5/08

    Abstract: A system for solving problems in mathematics, natural science, engineering and like disciplines, online or on a computing device. The system includes an interface which employs a declarative approach to solution representation. The interface allows users such as students to enter their solutions by declaring main steps of a solution (in various modes and levels of detail). The interface provides a list from which a student selects an appropriate action and fills out the details of the computations related to the action. The system helps students learn the process of solving problems by teaching them how to divide solutions into logical steps.

    BIPHASIC OSTEOCHONDRAL SCAFFOLD FOR RECONSTRUCTION OF ARTICULAR CARTILAGE
    37.
    发明专利
    BIPHASIC OSTEOCHONDRAL SCAFFOLD FOR RECONSTRUCTION OF ARTICULAR CARTILAGE 未知

    公开(公告)号：CA2873076A1

    公开(公告)日：2013-11-14

    申请号：CA2873076

    申请日：2013-03-14

    Applicant: STEVENS INST TECHNOLOGY

    Inventor： YU XIAOJUN ,  LEE PAUL

    IPC: A61L27/38 ,  A61F2/30 ,  A61L27/54 ,  C08L5/08 ,  C08L67/04

    Abstract: An osteochondral scaffold has a chondrogenic spiral scaffold in one end of an outer shell made of sintered microspheres, and an osteogenic spiral scaffold in the other end of the outer shell. Each spiral scaffold has nanofibers of a composition selected to promote attachment and proliferation of the desired types of cells. The nanofibers for the chondrogenic spiral scaffold have a different composition than the nanofibers for the osteogenic spiral scaffold. The nanofibers of each spiral scaffold are aligned to orient the attached cells so as to recreate the structure of the native tissue.

    39.
    发明专利
    未知

    公开(公告)号：DE69809943D1

    公开(公告)日：2003-01-16

    申请号：DE69809943

    申请日：1998-03-17

    Applicant: STEVENS INST TECHNOLOGY

    Inventor： KUNHARDT E ,  BECKER H

    IPC: H01J37/32 ,  H05H1/24 ,  H05H1/46 ,  H01J17/49 ,  G11B19/02

    Abstract: A method and apparatus for stabilizing glow plasma discharges by suppressing the transition from glow-to-arc includes a perforated dielectric plate having an upper surface and a lower surface and a plurality of holes extending therethrough. The perforated dielectric plate is positioned over the cathode. Each of the holes acts as a separate active current limiting micro-channel that prevents the overall current density from increasing above the threshold for the glow-to-arc transition. This allows for a stable glow discharge to be maintained for a wide range of operating pressures (up to atmospheric pressures) and in a wide range of electric fields include DC and RF fields of varying strength.

    AC glow plasma discharge device having an electrode covered with apertured dielectric
    40.
    发明专利
    AC glow plasma discharge device having an electrode covered with apertured dielectric 未知

    公开(公告)号：AU747886B2

    公开(公告)日：2002-05-30

    申请号：AU6248499

    申请日：1999-09-15

    Applicant: STEVENS INST TECHNOLOGY

    Inventor： KUNHARD ERICH E ,  BECKER KURT H

    IPC: B01J19/08 ,  H01J37/32 ,  H05H1/24 ,  H05H1/46 ,  H01J17/49

    Abstract: A method and apparatus for stabilizing glow plasma discharges by suppressing the transition from glow-to-arc includes a perforated or apertured dielectric plate having an upper surface and a lower surface and one or more holes extending therethrough. The perforated dielectric plate is positioned over the cathode. Each of the holes acts as a separate active current limiting micro-channel that prevents the overall current density from increasing above the threshold for the glow-to-arc transition. This allows for a stable glow discharge to be maintained for a wide range of operating pressures (up to atmospheric pressures) and in a wide range of electric fields include DC and RF fields of varying strength. In another embodiment, the device comprises an AC glow plasma discharge device wherein an apertured dielectric is placed over an electrode. The apertured dielectric may have one or more apertures or capillaries extending therethrough. The frequency of the AC source is adjusted to be matched to the characteristics of the apertured dielectric. At a proper frequency, jets come out of the apertures or capillaries, i.e. the capillaries get turned on and become electrodes to the opposite electrode. As such, the device goes from a glow state to a capillary plasma electrode discharge state. A second dielectric may be applied to the second electrode and the second dielectric may be solid or may be apertured.

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