Abstract: A method for installing a sensor assembly in a fire hydrant includes sequentially feeding components of the sensor assembly through an aperture in an upper standpipe of the fire hydrant. The components of the sensor assembly include a sensor unit, a conduit coupled with the sensor unit and extending away therefrom, and a series of rigid tubes surrounding the conduit and arranged in an end-to-end manner. The conduit is fed through the aperture along with the series of rigid tubes, and at least one of the series of rigid tubes has a length greater than a diameter of an interior of the fire hydrant.

Abstract: A method for installing a sensor assembly in a fire hydrant includes sequentially feeding components of the sensor assembly through an aperture in an upper standpipe of the fire hydrant. The components of the sensor assembly include a sensor unit, a conduit coupled with the sensor unit and extending away therefrom, and a series of rigid tubes surrounding the conduit and arranged in an end-to-end manner. The conduit is fed through the aperture along with the series of rigid tubes, and at least one of the series of rigid tubes has a length greater than a diameter of an interior of the fire hydrant.

Abstract: A sensor assembly includes a sensor unit including a generally rigid sensor housing and at least one electronic sensor component, a conduit coupled with the sensor unit and extending away from the sensor housing, and a rigid support structure supporting a portion of at least one of the conduit or the sensor housing at a first end adjacent the sensor unit and extending away from the sensor unit to a length of at least about 6 feet. The rigid support structure configured to maintain the sensor unit within an internal structure for monitoring using the electronic sensor component.

Abstract: A sensor assembly includes a sensor unit including a generally rigid sensor housing and at least one electronic sensor component, a conduit coupled with the sensor unit and extending away from the sensor housing, and a rigid support structure supporting a portion of at least one of the conduit or the sensor housing at a first end adjacent the sensor unit and extending away from the sensor unit to a length of at least about 6 feet. The rigid support structure configured to maintain the sensor unit within an internal structure for monitoring using the electronic sensor component.

Abstract: A device for transferring adverse event information from a plurality of remote hydrants to a municipal monitoring server comprises detecting an adverse event in a hydrant that relates to an adverse hydrant condition; transferring data representative of the adverse condition to a host server by routing the data along a predefined hopping path; and transferring the data from the host monitor to the municipal monitoring server. A system for detecting adverse events at a hydrant and event information to a municipal monitoring sever is also disclosed.

Abstract: A device for transferring adverse event information from a plurality of remote hydrants to a municipal monitoring server comprises detecting an adverse event in a hydrant that relates to an adverse hydrant condition; transferring data representative of the adverse condition to a host server by routing the data along a predefined hopping path; and transferring the data from the host monitor to the municipal monitoring server. A system for detecting adverse events at a hydrant and event information to a municipal monitoring sever is also disclosed.

Abstract: A method for transferring adverse event information from a plurality of remote hydrants to a municipal monitoring server comprises detecting an adverse event in a hydrant that relates to an adverse hydrant condition; transferring data representative of the adverse condition to a host server by routing the data along a predefined hopping path; and transferring the data from the host monitor to the municipal monitoring server. A system for detecting adverse events at a hydrant and event information to a municipal monitoring sever is also disclosed.

Abstract: Organosilicon compounds are prepared by the addition reaction of a gaseous unsaturated hydrocarbon with a silane or siloxane containing at least one silicon-bonded hydrogen atom in the presence of a hydrosilylation catalyst in a liquid reaction medium. In this process the unsaturated hydrocarbon and optionally the silane or siloxane is dispersed into the liquid reaction medium by a jet eductor (also known as a venturi pump) device and the resultant gas-in-liquid dispersion is introduced into a bubble reactor.

Abstract: A bit quality evaluator receives a sequence of bits. The bit sequence is provided to a decoding device that performs soft decision convolutional decoding on the sequence of bits. An off track event detector detects an occurrence of a trellis decode path change during the convolutional decoding operation and identifies a first symbol proximate corresponding to the occurrence of the trellis decode path change. An erasure decision circuit identifies at least the first symbol for erasure. The output of the first decoder and the erasure decision circuit are received at a second decoder, which decoder decodes the output of the first decoder after erasing at least the first symbol. The erasure decision circuit may also identify additional symbols for erasure using performance measures of the trellis decode path and using quality measures of the sequence of bits.

Abstract: An apparatus includes: a logic circuit with electronic memory to: monitor signal traffic with at least one client and a computer network to determine, without changing the signal traffic, for each client, a network address and a port to which that client is connected; provide to a first dynamic table the network address and port for each said client; access an authentication server that has a second table of user names and corresponding passwords for network login, in which the second table also includes for each user name and password a corresponding virtual local network (VLAN) membership and/or VLAN tag and/or Quality of Service (QoS); and add to the first dynamic table the user name, VLAN membership, VLAN tag and QoS information learnt from the authentication server in the second table.

Abstract: An apparatus includes: a logic circuit with electronic memory to: monitor signal traffic with at least one client and a computer network to determine, without changing the signal traffic, for each client, a network address and a port to which that client is connected; provide to a first dynamic table the network address and port for each said client; access an authentication server that has a second table of user names and corresponding passwords for network login, in which the second table also includes for each user name and password a corresponding virtual local network (VLAN) membership and/or VLAN tag and/or Quality of Service (QoS); and add to the first dynamic table the user name, VLAN membership, VLAN tag and QoS information learnt from the authentication server in the second table.

Abstract: A bit quality evaluator receives a sequence of bits. A quality measure is assigned to each bit within the sequence. The bit sequence and the quality measures are provided to a decoding device that performs soft decision convolutional decoding on the sequence of bits using the quality measure. An off-path detector detects an occurrence of a trellis decode path change during the convolutional decoding operation and identifies a first symbol proximate corresponding to the occurrence of the trellis decode path change. An erasure decision circuit identifies at least the first symbol for erasure. The output of the first decoder and the erasure decision circuit are received at a second decoder, which decoder decodes the output of the first decoder after erasing at least the first symbol. The erasure decision circuit may also identify additional symbols for erasure based on performance measures of the trellis decode path and the quality measure of the sequence of bits.

Abstract: A computer network including: at least one switch connecting at least one edge device to the remainder of the network, said at least one switch including: snooping apparatus using DHCP to monitor the signal traffic through the switch to or from the each edge device to determine, without changing the traffic signals, for each edge device, the MAC address, the IP address, and the port of the switch to which it is connected, and a dynamic table within said switch of, for each edge device, the MAC address, the IP address, and the port which it is connected, the contents of the table being provided by said snooping apparatus.

Abstract: Organosilicon compounds are prepared by the addition reaction of a gaseous unsaturated hydrocarbon with a silane or siloxane containing at least one silicon-bonded hydrogen atom in the presence of a hydrosilylation catalyst in a liquid reaction medium. In this process the unsaturated hydrocarbon and optionally the silane or siloxane is dispersed into the liquid reaction medium by a jet eductor (also known as a venturi pump) device and the resultant gas-in-liquid dispersion is introduced into a bubble reactor.

Abstract: A computer network including: at least one switch connecting at least one edge device to the remainder of the network, said at least one switch including: snooping apparatus using DHCP to monitor the signal traffic through the switch to or from the each edge device to determine, without changing the traffic signals, for each edge device, the MAC address, the IP address, and the port of the switch to which it is connected, and a dynamic table within said switch of, for each edge device, the MAC address, the IP address, and the port which it is connected, the contents of the table being provided by said snooping apparatus

Abstract: A computer network including: at least one switch connecting at least one edge device to the remainder of the network, said at least one switch including: snooping apparatus using DHCP to monitor the signal traffic through the switch to or from the each edge device to determine, without changing the traffic signals, for each edge device, the MAC address, the IP address, and the port of the switch to which it is connected, and a dynamic table within said switch of, for each edge device, the MAC address, the IP address, and the port which it is connected, the contents of the table being provided by said snooping apparatus.

Abstract: An ultra wideband (UWB) jamming system comprises a processor, a memory, a pulse generator, one or more UWB transmitters, and one or more UWB antennas. In an exemplary embodiment of the present invention, the RF signals of a threat transmission or an RF-triggered explosive device (RTED) are evaluated and a set of interference parameters defined for the RF signal of that device. The interference parameters are predetermined to interfere with the reception or transmission of the RF signal. The interference parameters are sent to a pulse generator that drives one or more UWB transmitters to generate a signal has a statistically high probability of jamming or introducing an error in the threatening transmission.

Abstract: An ultra wideband (UWB) jamming system comprises a processor, a memory, a pulse generator, one or more UWB transmitters, and one or more UWB antennas. In an exemplary embodiment of the present invention, the RF signals of a threat transmission or an RF-triggered explosive device (RTED) are evaluated and a set of interference parameters defined for the RF signal of that device. The interference parameters are predetermined to interfere with the reception or transmission of the RF signal. The interference parameters are sent to a pulse generator that drives one or more UWB transmitters to generate a signal has a statistically high probability of jamming or introducing an error in the threatening transmission.

Abstract: The present invention provides for a method and apparatus for controlling and raising the temperature of a fitting used to transfer liquefied gas to a storage vessel. A hollow metal tube containing heated inert gas contacts the fitting such that heat is transferred to the fitting. By raising the temperature of the fitting, problems such as leakage due to freezing the o-ring seal can be reduced. The method utilizes a vortex tube as the heat source to avoid problems with sparking when an incendiary gas such as hydrogen is being transferred to the storage vessel.

Abstract: The test results found that the EMI impact depended on the UWB power that fell within the receiver passband. Specifically, EMI occurred when the average power in the receiver passband was approximately equal to the desired signal level of the receiver. One waveform, TW7, did not cause EMI because the average power was too low. Three waveforms, TW1, TW2, and TW6 only caused EMI when the receiver was tuned to the frequency of the UWB spectral component. Three waveforms, TW3, TW4, and TW5, caused EMI at all receiver frequencies. As noted, these tests were performed to determine the susceptibility of various RF receiver (radars and communications systems) devices to UWB signals. The tests were not intended to evaluate the use of UWB signals for jamming purposes.