Abstract: A design application allows one or more authors to create a learning path associated with a given topic. The learning path includes content curated from various online resources. The design application allows the authors to aggregate the content from the various online resources. The design application allows the author to curate content to include or associate with nodes. The design application also allows the authors to arrange the nodes in a hierarchy. When the learning path is complete, the design application presents the learning path to users. Users access the content within the learning path according to the hierarchy of the nodes. Advantageously, the author is able to present content, which may otherwise be distributed across the internet, within a cohesive learning path.

Abstract: A power drive unit (PDU) for cargo handling systems comprising a frame arranged to be mounted in use for raising and lowering movement relative to a supporting structure, a drive motor carried by the frame and having an output shaft, a drive roller assembly carried by said frame for engagement in use with a unit load device (ULD) or the like to be moved by the PDU, a first gear train transmitting drive from said motor output shaft to a drive roller of said drive roller assembly, a rotatable lifting cam assembly carried by said frame and driven in use relative to said frame to lift and lower the frame on said mounting, a second gear train for transmitting drive from said motor output shaft to said lifting cam assembly to operate said lifting cam assembly, clutch means operable to connect and disconnect said motor output shaft to and from said second gear train, a torque limiting device limiting the torque transmitted through said clutch, when said clutch is engaged, to said lifting cam assembly, and a brake me

Abstract: A run flat tire has a plurality of reinforcing wedges located in the tire sidewall with the hardness of each wedge generally diminishing in the radially inward direction of the sidewall. Since the bead filler is harder than the radial innermost wedge, the hardness at generally the top of the bead filler increases in the radial inward direction. The reinforcing wedges partially overlap each other and can generally have any configuration. The changing of hardness of the radial wedges results in a wedge sequence and thus a more even strain distribution throughout the tire sidewall. This strain distribution extends the run flat life of the tire and also provides a good balance with other tire performance parameters.

Abstract: A run flat tire has a plurality of reinforcing wedges located in the tire sidewall with the hardness of each wedge generally diminishing in the radially inward direction of the sidewall. Since the bead filler is harder than the radial innermost wedge, the hardness at generally the top of the bead filler increases in the radial inward direction. The reinforcing wedges partially overlap each other and can generally have any configuration. The changing of hardness of the radial wedges results in a wedge sequence and thus a more even strain distribution throughout the tire sidewall. This strain distribution extends the run flat life of the tire and also provides a good balance with other tire performance parameters.

Abstract: A low noise tire tread includes a base pitch sequence circumferentially extending about at least a portion of the tire. A bias pitch sequence is embedded within at least one of the base pitches and desirably in a majority of, or preferably in each base pitch. The bias pitches extend generally at a lateral angle with respect to the circumferential base pitch and desirably extends across the full tread arc. One or more bias pitch sequences have different lateral pitch locations than the pitch locations of another bias pitch sequence.

Abstract: A paint trimming device is provided for applying paint to a first surface closely adjacent to an adjoining surface. The device comprises a base having opposing faces and a body portion extending between the faces, a a handle projecting outwardly from one face and having extension capability (such as being connectable to an extension pole), a paint pad having a peripheral edge and being secured to the base upon the other face, and a spacer which extends outwardly from the body portion and has its outermost points defining a closed linear boundary whose perpendicular projection, in a plane in which the paint pad lies, completely surrounds and is spaced from the peripheral edge of the paint pad.

Abstract: A hybrid combined cycle power plant including a solar central receiver for receiving solar radiation and converting it to thermal energy. The power plant includes a molten salt heat transfer medium for transferring the thermal energy to an air heater. The air heater uses the thermal energy to preheat the air from the compressor of the gas cycle. The exhaust gases from the gas cycle are directed to a steam turbine for additional energy production.

Abstract: A tire with reduced tread noise includes a tread having a plurality of base pitches arranged about the circumference of the tire in at least one pitch sequence. Each base pitch in the pitch sequence has a tread geometry defined by a plurality of load-supporting tread blocks separated or interrupted by grooves and/or sipes. The base pitches in the pitch sequence have different tread geometries to reduce the noise of the tire on the road surface. The grooves and/or sipes in each base pitch have common end points along the leading and trailing edges of the base pitches such that the grooves and/or sipes are continuous across the boundary between adjacent base pitches in the pitch sequence. Likewise, the grooves and/or sipes in each base pitch in one rib or row in the tire can have common end points along the edge between a base pitch in an adjacent rib or row, such that the grooves and/or sipes are continuous in the lateral direction as well.

Abstract: A tire with reduced tire noise includes a tread having a plurality of base pitches placed about the circumference of the tire in at least one circumferential section. According to one aspect of the invention, the base pitches have three different pitch lengths which form a pitch sequence around the circumference of the tire in each circumferential section. The base pitches are arranged such that the transitions between the base pitches with the smallest pitch lengths to the base pitches with the largest pitch lengths are between about 15% and 30% of the total number of transitions between base pitches of different lengths in the pitch sequence. Additionally, the smallest and largest base pitches each comprise between about 35% and 40% of the total number of base pitches around the circumference of the tire. The above factors, when coupled with no more than three consecutive base pitches having the same pitch length being arranged adjacent one another, provide a tread with reduced tire noise.

Abstract: A tire tread has a plurality of base pitches arranged in at least two circumferential sections around the tire. The base pitches have at least two different pitch lengths and include a plurality of load-supporting tread blocks. The different pitch lengths of the base pitches form a pitch sequence in each circumferential section of the tire. The pitch sequences in the sections are arranged such that the noise produced by the base pitches in the tire tread is a low level, distributed noise to reduce the noise produced by the tire when the tire is in use.

Abstract: A CMOS circuit is disclosed which has a latent image feature for application in FET memory arrays for writable read only storage applications. A four device cross-coupled CMOS circuit is formed with minimum real estate area, so as to allow for wiring level programming into a preconditioned binary one or zero state. The preconditioned circuit will assume a preselected binary state when power is turned on. Thereafter, the circuit can be accessed for normal binary one and zero selective storage without a significant diminution in its operating characteristics, when compared with conventional CMOS cross-coupled storage circuits.

Abstract: The high resistance of diffused electrical interconnection lines used for ground return paths in MOS field effect transistor (MOSFET) arrays limits their size and performance. Advantage is taken of the extra interconnection level available from conventional double-layer-polycrystalline silicon (polysilicon) processes to distribute ground potential to arrays, by means of a polycrystalline grid with direct contact to diffused electrodes therein, thus greatly reducing the deleterious effects of ground resistance. The proposed ground grid is integrated into the structure of a MOSFET ROM using a typical double polysilicon process. The first polysilicon level provides the conductive medium for said ground grid and the diffusing doping impurities that form contiguous source electrodes for the array MOSFETs. Gate electrodes thereof and word lines are formed out of the second polysilicon level. Drain electrodes are diffused and contacted by metallized output lines.

Abstract: A generic FET logic circuit topology is disclosed which employs non-thresholded path routing to eliminate logic transition times in the critical data path. Non-threshold logic performs logic operations with non-inverting unity gain OR and AND functions. The propagation time through the logic matrix is therefore similar to the delay through a chain of linear amplifiers, as contrasted to an algebraic accumulation of delays with conventional logic techniques. This results in an N-factor improvement in the power-delay product over conventional techniques, where N is the number of logic operations being performed.

Abstract: Wet process phosphoric acid is purified by extraction with a hexanone of pentanone to form an organic extract, containing phosphoric acid, from which the acid content is recovered by treatment with water or aqueous phosphoric acid in 2 or more portions to give 2 or more purified acids, the recovery to give the last purified acid being in more than 1 countercurrent stage.