Abstract: An interactive adaptive learning system. A collection of core stimuli consisting of at least auditory and visual symbols and information, are stored on a computer. A number of different relationships between the core stimuli are created which can then be presented as discrimination or identification tasks to the user. Different sets of stimuli are then presented succeedingly to the user and the user is requested to respond. The form of response can either be to investigate and analyze the stimuli, or attributes of the stimuli, or answer of the quarry regarding the discrimination or identification task. The system has a built in strategy for progressing the user through learning tasks. The users actions and responses in reaction to the stimuli are all recorded and analyzed. Based not only on the success rate of the user responses, but also on other characteristics of the users reaction to the stimuli, the users learning strategy is classified.

Abstract: An irrigation system for a field, wherein a circular central portion of the field is irrigated by a center pivot irrigation machine, comprising a buried primary water line which extends from a source of water to the vicinity of the field area to be irrigated. At least one, and normally several, header water lines are in fluid communication with the primary water line and extend therefrom with a three-way pulse valve being imposed in each of the header water lines. A plurality of distribution water lines are in fluid communication with each of the header water lines and extend therefrom downstream of the pulse valve. A plurality of spaced-apart, in-line pulse emitter valves are imposed in each of the water distribution lines and have a water discharge orifice associated therewith for discharging water outwardly from the water distribution line to the area immediately adjacent thereto.

Abstract: The invention relates to amino acid derivatives of general formula (I), wherein R1 is H or CH3, X is H or NR2R3, wherein R2 is H, CH3, COH or COCH3 and R3 is H, CH3 or COO—Z wherein Z is R2R3 NH+CHR1(CH2)nCOO(CH2)mCH2Y; Y is H, CH3 or NHR4, wherein R4 a COO—NH3+CH2(CH2)mOOC(CH2)nCH3, the meaning of group (CH2)m being selected from alkyls, secondary alkyls, monocycloalkyls, bicycloalkyls and tricycloalkyls having from 4 to 15 carbon atoms and n having a value of from 3 to 14.

Abstract: A circuit and method for driving a magnetostriction oscillator which is used for generating a high output ultrasonic wave by using a pulse width modulation is provided. In the circuit, a controller outputs first and second variable digital signals in order to control a duty cycle of a magnetostriction oscillator. A pulse width modulating circuit generates a variable pulse width modulating signal based on the first and second variable digital signals from the controller. A driver drives the magnetostriction oscillator according to the variable pulse width modulating signal from the pulse width modulating circuit. According to the circuit, the system operates for a long time so that stability of equipment can be obtained. The circuit uses low voltage and low energy so that efficiency of the system is promoted.

Abstract: A retractable ½ wave antenna having an integral matching section that can be used on a cellular telephone will be matched to a transceiver circuit when extended. When the antenna is retracted, it acts as a ¼ wave antenna and will still be matched to the transceiver circuit.

Abstract: An improved aortic cannula is provided for use in heart by-pass surgery. The cannula includes an elongated tube with a terminal end. The terminal end has a ramped surface leading to the discharge opening. The ramped surface terminates in a spoon-shaped lip. The spoon-shaped lip directs blood out of the cannula opening toward the ascending aorta or aortic arch in a U-shaped dispersion so as to preclude impact on the aortic wall. A bead adjacent the opening facilitates dispersion of the exiting blood. The opening has an upper edge with an inverted V-shaped contour which also facilitates dispersion of the blood.

Abstract: An improved surface mount resistor and method for making the same includes a body comprised of an elongated strip of electrically resistive material and a resistor terminal formed at each end of the resistive material. The resistive material is machined with a laser beam to create a current path having a desired resistance. The pattern cut is determined by partitioning the resistive material into a plurality of squares forming a current path through the resistive material with the correct resistivity. The resistive material is cut primarily with axial cuts so that the beam strength of the resistive material is maintained.

Abstract: A wet towel dispensing lid assembly includes an upper first wall portion pivotally connected to a lower wall of a chamber with the lower wall and first wall portion having opposing circular walls engagable in nesting relationship when the first wall portion is in its closed position. The opposed walls form a towel end tip well maintaining the towel end tip in a damp sealed accessible condition.

Abstract: An adjustable armrest is provided for a riding lawn mower which normally has an operator's seat positioned thereon with the seat including armrests at either side of the seat. The armrests are normally pivotally movable from an operative position to an inoperative position. In the operative position, the armrests are designed to support the arms of the operator while the operator is manipulating the control levers of the mower. An adjuster plate is selectively rotatably mounted on each of the armrest support frames with the adjuster plate being selectively rotatably mounted with respect to the armrest support frame to selectively vary the amount of downward pivotal movement of the armrest. The adjuster plate has a bolt opening formed therein to facilitate the rotatable mounting of the adjuster plate on the support frame. The bolt opening is offset in at least two directions from the center of the adjuster plate so that the edges or ends thereof are spaced at different distances from the bolt opening.

Abstract: A multi-stage method of insert molding is described including the steps of: providing a vertically movable first mold member with a cavity formed therein; providing a second mold member having a substantially flat upper molding surface; providing a third mold member having an upper end with a cavity formed therein; positioning an insert directly on the flat upper molding surface of the second mold member; positioning the first mold member with respect to the second mold member so that the cavity of the first mold member receives the insert; injecting a first flowable plastic material into the cavity in the first mold member to partially encapsulate the insert; allowing the first flowable plastic material to cool and solidify, thereby creating a first stage molding; removing the first mold member and the second stage molding from the second mold member; positioning the first mold member with respect to the third mold member so that the first stage molding registers with the cavity of the third mold member; inj

Abstract: A trailer includes a foldable gate mounted for pivotal movement about a gate axis from a transport position wherein the gate is elevated for transporting to an unload position wherein the gate is lowered to permit removal of objects carried on the trailer. An elongated flexible member has its first end connected to the gate and its second end connected to a spring which is anchored to the trailer. The spring resists the force of gravity as the gate moves from its upper travel position to its lower unload position.

Abstract: A hanger for hanging a load chart on a delivery vehicle includes a hanging bracket and a self-balancing mounting arm. The hanging bracket has a hooked upper end and a lower end formed into an eye that the self-balancing mounting arm slides through. The mounting arm has a central portion and opposite hooked lower ends adapted to be removably inserted into holes in the load chart, the hooked lower ends each extending from the central portion in a direction that is generally opposite from the hooked upper end of the first rod. The hanger provides a unique method of hanging a load chart on a vehicle.

Abstract: Doped tantalum and niobium pellets with nitrogen is described wherein the resulting pellets are substantially free of nitride precipitate on their outer surfaces. The tantalum and niobium pellets are formed by heating the pellets to a temperature of from about 600-1400° C. in a nitrogen gas atmosphere and then in a vacuum which causes nitrogen contacting a pellet to diffuse into the inner portion of the pellet instead of forming a precipitate. The resulting pellets have improved DCL stability and reliability in comparison to prior art nitrogen-doped tantalum and niobium pellets.

Abstract: An antenna positioner is provided for use in an anechoic chamber to enable the radiation pattern of an antenna under test to be measured. A vertically disposed and selectively rotatable azimuth rotator pedestal is positioned in the anechoic chamber and a support is mounted on the pedestal for rotation therewith. A roll-axis shaft is mounted on the support for rotatably supporting the antenna under test. The roll-axis shaft rotator is positioned outside the anechoic chamber and has a horizontally disposed and horizontally movable connecting rod which is selectively movable into the chamber for connection to the roll-axis shaft to incrementally rotate the roll-axis shaft and the antenna under test.

Abstract: A pair of implements such as hay windrow fluffers are interconnected by a hitch assembly allowing for positioning the fluffers in a side-by-side field position or trailing transport position. A tongue assembly on the second implement is connected to the tongue assembly on the first implement when the implements are in a field position. An extendable linkage interconnects the implements and extends laterally when the implements are in a field position and parallel to the line of travel when the implements are in the transport position. The linkage has vertical posts at opposite ends which connect to the tongue assemblies of the implements to allow the linkage to extend over the front first implement when in the transport position.

Abstract: A side dump body including a plurality of side dump body units pivotally mounted on a truck or trailer frame. Each of the side dump body units may be individually pivotally moved from a transport position to a dumping position whereby the contents of the dump body units may be dumped from the side of the truck or trailer.

Abstract: A monolithic resistor is provided with a central resistive metallic foil strip positioned between and attached to a pair of wings formed from an electrically conductive metallic foil. The wings include large surface areas to dissipate heat. A plurality of terminal pins are formed in the conductive strips for connection to an integrated circuit board, as well as a current source.

Abstract: A microstrip antenna comprising a substrate, a radiating element constructed on the top surface of the substrate, a ground plane on the bottom surface of the substrate, a through hole at a position corresponding to the radiating element of the substrate, and a power feeding conductor at a position corresponding to the radiating element on the substrate.

Abstract: A method of converting a truck sleeper cab to a day cab comprising the steps of: providing a truck cab having a sleeper cab riveted to the rearward end thereof; removing the rivets which connect the sleeper cab to the truck cab; removing the sleeper cab from the truck cab to create an opening at the rearward end of the truck cab; providing a rear wall member which resembles the rear wall of a day cab and which is designed to close the opening created by the removal of the sleeper cab from the truck cab; and securing the rear wall member to the truck cab to close the opening whereby the truck cab has the appearance of a day cab.