Abstract: A power amplifier using a digitally pre-distorted compound semiconductor transistor is discussed. The amplifier has improved linearity. For a given gate bias voltage, there exists a drain voltage at which the drain current is the same for a pulsed signal as for a DC signal and is invariant to quiescent bias points occurring when a pulsed signal is applied. If an amplifier operates at this point, the trapping effects that lead to memory effects do not affect the dynamic behaviour of a digitally pre-distorted amplifier, resulting in improved linearity. The existence of this point, and it's benefits to the linearity of a digitally pre-distorted amplifier, have not been previously recognised.

Abstract: A band combining filter for passing signals in a communications band includes a plurality of cascaded directional filters. Each directional filter has at least two inputs and at least two outputs. The nth directional filter is arranged such that output signals O1 and O2 from the first and second outputs are related to input signals I1, I2 to the first and second inputs by the relation ( O 1 O 2 ) = ( R n ? ? 1 T n ? ? 2 T n ? ? 1 R n ? ? 2 ) ? ( I 1 I 2 ) with R and T being reflection and transmission functions respectively. The directional filters are connected in a cascade with the first and second inputs of the nth directional filter being connected to the first and second outputs of the (n?1)th directional filter respectively in the cascade.

Abstract: An amplifier comprising a digitally pre-distorted Laterally Diffused Metal Oxide Semiconductor (LDMOS) transistor and a biassing circuit is described. The gate bias voltage defines an operating point of the LDMOS transistor such that the quiescent drain current of the LDMOS transistor is substantially invariant when an input signal of varying power is applied. The quiescent drain current is the drain current of the at least one LDMOS transistor when the input signal is instantaneously removed. Such an amplifier has reduced intermodulation products in its output for input signals of varying power levels. The intermodulation products are reduced for input signals of less than maximum power as well as maximum power.

Abstract: A tuneable bandpass filter comprising a plurality of coupled resonators, the filter comprising a common structure comprising at least one common coupling or one common resonator; an upper loop comprising first and second end resonators coupled together by a signal path, the loop further comprising at least one further signal path extending between end resonators, the further signal path comprising at least one further resonator, the end resonators being coupled to the common structure; a lower loop comprising first and second end resonators coupled together by a signal path, the loop further comprising at least one further signal path extending between end resonators, the further signal path comprising at least one further resonator, the end resonators being coupled to the common structure; the resonators being coupled together such that the bandpass filter can be divided into a low pass sub filter and a high pass sub filter, one of the sub filters being arranged to receive the output of the other.

Abstract: An anti-pinch control system is used to identify obstructions in a path of movement for a powered vehicle member, such as a vehicle window for example. A pinching area is identified for the vehicle window and at least one indicium or indicator is mounted to a vehicle structure to be in view of a camera. The indicium is positioned such that no object may pass into the pinching area without also passing between the camera and at least a portion of the indicium. The camera identifies an obstruction when any portion of the indicium is obscured. This indicium includes a plurality of predefined zones, with each zone being associated with an operational function, such as upward window movement, downward window movement, door locking, side mirror movement, etc. This eliminates the need for separate switches to perform each of these functions thereby reducing overall cost for a vehicle door system.

Abstract: A band combining filter comprising a plurality of cascaded directional filters, each directional filter having at least two inputs and at least two outputs, the nth directional filter being arranged such that the output signals O1 and O2 from the first and second outputs are related to the input signals I1, I2 to the first and second inputs by the relation ( O 1 O 2 ) = ( R n ? ? 1 T n ? ? 2 T n ? ? 1 R n ? ? 2 ) ? ( I 1 I 2 ) with R and T being reflection and transmission functions respectively, characterised in that the directional filters are connected in a cascade with the first and second inputs of the nth directional filter being connected to the first and second outputs of the (n-1)th directional filter respectively in the cascade.

Abstract: An anti-pinch control system is used to identify obstructions in a path of movement for a powered vehicle member, such as a vehicle window for example. A pinching area is identified for the vehicle window and at least one indicium or indicator is mounted to a vehicle structure to be in view of a camera. The indicium is positioned such that no object may pass into the pinching area without also passing between the camera and at least a portion of the indicium. The camera identifies an obstruction when any portion of the indicium is obscured. This indicium includes a plurality of predefined zones, with each zone being associated with an operational function, such as upward window movement, downward window movement, door locking, side mirror movement, etc. This eliminates the need for separate switches to perform each of these functions thereby reducing overall cost for a vehicle door system.

Abstract: A core for pressure-sensitive adhesive tape comprises a structural portion such as a wound paperboard tube, and a polymer film ply wrapped about the outer surface of the structural portion and adhered thereto. The polymer film ply has a release coating on its outer surface to allow an adhesive tape wound onto the core to readily and cleanly release from the core during unwinding. The polymer film ply has a lap joint between its opposite edges. The lap joint can be ultrasonically welded during formation of the tape core. Alternatively, the release coating along the underlying edge of the lap joint is removed by a solvent prior to formation of the lap joint.

Abstract: A wound paperboard tube having enhanced burst strength in high-moisture conditions up to and including complete and prolonged submersion in liquid water comprises a plurality of paperboard plies formed from a pulp comprising papermaking furnish and an effective amount of a size such that the paperboard plies have reduced moisture add-on when submerged in water, relative to paperboard plies formed from a pulp comprising the identical furnish but without the size. The plies are wound one upon another about an axis of the tube and adhered together with a water-resistant adhesive comprising a polyvinyl composition containing a cross-linking agent for inducing cross-linking of the adhesive.

Abstract: Methods, devices and kits for sublingual drug delivery using iontophoresis are described herein. An active agent can be administered sublingually by placing a solid oral dosage form containing the active agent in the sublingual region of a patient and applying iontophoresis for a suitable period of time. Preferably up to 4 mA of current are applied to the sublingual region. Different time ranges can be used to administer iontophoresis; preferably iontophoresis is administered for up to 2 minutes at a time. Any suitable device for administering iontophoresis to the sublingual region may be used. The preferred device is a hand-held device that contains a handle, two electrodes, one of which is located on the handle and the other of which is attached to the end of the handle, and a connection to a power source. Optionally, the device contains a timer, which can be used turn off the current at a preset time.

Abstract: An amplifier comprising a field effect transistor, a terminating network comprising inductors connected in series separated by capacitors connected in parallel, a filter and a load, wherein the values of the capacitors and inductors are arranged to present open circuits to a predetermined number of odd harmonics of a signal frequency being amplified, and to present short circuits to a predetermined number of even harmonics of the signal frequency, wherein the normalised values of the inductors and capacitors of the terminating network are selected using the following procedure: Let gr=Cr r odd=Lr r even then g1=1, g1g2=(a); grgr+1=(b), r=2?2m?1 and g2mg2m+1=(c) where (m?1) represents the predetermined number of odd harmonics which are presented with an open circuit 1 m ? ( 2 ? m - 1 ) ( a ) 4 ( 2 ? m - 1 + r ) ? ( 2 ? m - r ) ( b ) 1 m .

Abstract: A method and system for locating a fault in a network. According to the system, an address analyzer and interface analyzer of a network manager of the network detect that there is a failure associated with a node of the network, a node analyzer of the network manager determines if the node responds to a poll, and if the node does not respond to the poll, a neighbor analyzer of the network manager models the failure, further comprising determining a number and a polling of a plurality of neighbor nodes of the node and assigning the fault in accordance with the number and the polling of the plurality of neighbor nodes According to the method, in response to a node having one or more of one or more addresses and one or more interfaces that fail to respond to a poll, polling the node and polling a plurality of neighbor nodes of the node and assigning the fault in accordance with the polling of the node and a number and the polling of the plurality of neighbor nodes.

Abstract: A method and system for reducing fault analysis times in a network having a plurality of pollable objects. Poll responses are received from pollable objects, priorities are assigned to each received poll response in accordance with one or more of a received poll response value, a pollable object status and a type of pollable object, and the assigned priorities are processed and to determine any fault locations, wherein a pollable object with a higher priority is processed before a second pollable object with a lower priority. A status manager is operable to receive poll responses from one or more of the pollable objects, a status analyzer is operable to assign, in conjunction with one or more analyzers, priorities to each received poll response in accordance with the received poll response value, a pollable object status and a type of pollable object, and analyzers coupled the status analyzer use the assigned priorities and the corresponding received poll responses to determine a fault location.

Abstract: A method and system for analyzing a group of network elements in a network. One or more of the group of network elements, functionally coupled to provide a service, and a plurality of sub elements of the group of network elements are polled. A list having one or more items from one or more of the group of network elements and one or more of the sub elements is generated, wherein the one or more items have a changed state as determined by polling the one or more of the group of network elements and the plurality of sub elements of the group of network elements. The list is analyzed to perform one or more of setting a status for the group of network elements and reporting fault indications. A polling engine is operative to poll one or more of the group of network elements, and a plurality of sub elements of the group of network elements.

Abstract: A test device includes a stationary web roll support assembly comprising a base and a pair of core supports spaced apart and affixed to the base with the core supports projecting upwardly from the base, the core supports structured and arranged to engage opposite ends of a core of a web roll so as to support the web roll. The test device also includes a movable weight load simulating assembly comprising a flexible belt having opposite ends, and a belt holder structured and arranged to secure the opposite ends of the belt to the belt holder with the belt forming a generally U-shaped loop about an outer surface of the web roll intermediate the opposite ends of the core. Movement of the belt holder away from the stationary web roll support assembly causes the belt to exert a load on the web roll, simulating weight load on the core and core supports.

Abstract: The present invention is related to databases and the exchange of scientific information. Specifically the invention disclosed a unified scientific database that allows researchers to easily share their data with other researches. The present invention also allows for the ease of data collection, annotation, storage, management, retrieval and analysis of scientific data through and into the database. In addition, it allows for archival storage and retrieval of data collected directly from laboratory instruments to ensure data consistency for patent and other purposes. It also allows for ease of sharing data between laboratories in remote locations. The present invention also supports the automated creation of experimental protocols.

Abstract: The thermoforming press has a frame, a forming die assembly affixed to the frame, a mold-supporting table suspended to the frame under the forming die assembly, and a pair of molds mounted side by side on the mold-supporting table. A drive system is provided for imparting a pendulum movement to the mold-supporting table for alternately registering one of the molds with the forming die assembly while the other mold is positioned at a part retrieving station. The part retrieving and stacking mechanism has horizontal and angular displacements only as the vertical component of the retrieving motion is provided by the pendulum system. Spring discs are mounted between the forming die assembly and the press platen to control the forces generated between the forming die assembly and each mold.

Abstract: A system for the downhole injection of chemical into a well through capillary tubing using a surface chemical pump includes downhole injection valve. The downhole injection valve includes an upstream and a downstream check valve connected in series. The upstream check valve has an adjustable spring bias. The amount of bias is dependent on the nature of the well and the system for inserting chemical through the capillary tube into the well. The lower check valve has a fixed bias and protects the injection valve from the unwanted backflow of gas, fluids or solids.

Abstract: A system for the downhole injection of chemical into a well through capillary tubing using a surface chemical pump includes downhole injection valve. The downhole injection valve includes an upstream and a downstream check valve connected in series. The upstream check valve has an adjustable spring bias. The amount of bias is dependent on the nature of the well and the system for inserting chemical through the capillary tube into the well. The lower check valve has a fixed bias and protects the injection valve from the unwanted backflow of gas, fluids or solids.

Abstract: In a railway sleeper assembly, a pair of rail insulators (3) designed for use with a steel railway sleeper (1) which includes at the opposite sides of each intended rail location thereon a pair of openings (6) for receiving the respective stems (8) of a pair of shoulders (4), are each operatively disposed, when in use, between a foot of the rail (2) and the respective proximate shoulder (4). Each insulator (3) includes a member (11) which, when the insulator is in use, operatively extends below a top surface of the sleeper (1) and into the associated opening (6) so as to lie between the walls of that opening (6) and the stem (8) of the associated shoulder (4), thereby to retain the shoulder (4) in its operative position relative to the sleeper.