Abstract: An adjustable surf wake system enhances a wake formed by a watercraft travelling through water. The system may include a flap for deflecting water traveling past the stern of the watercraft, and/or a positioner operably connected to the flap for positioning the flap relative to a longitudinal axis of the watercraft between a neutral position and an outward position. Positioning a port flap in its extended position enhances a starboard surf wake, and positioning the starboard flap in its extended position enhances a port surf wake.

Abstract: The operative bandwidth of a broadband RF amplifier is improved by using a low-pass type broadband impedance transformer, instead of a broadband matching network, in a multi-stage impedance matching network connected, e.g., to the amplifier input. The multi-stage impedance matching network comprises three stages connected in series. The first stage is a low-pass type broadband impedance transformer that provides broadband fundamental impedances and high reflection for the second harmonics. The second stage is a phase shifter that controls the location of the second harmonic reflection coefficient phases. The third stage is a high-pass input matching circuit that transforms the complex conjugate device input impedance to a real impedance.

Abstract: The operative bandwidth of a broadband RF amplifier is improved by using a low-pass type broadband impedance transformer, instead of a broadband matching network, in a multi-stage impedance matching network connected, e.g., to the amplifier input. The multi-stage impedance matching network comprises three stages connected in series. The first stage is a low-pass type broadband impedance transformer that provides broadband fundamental impedances and high reflection for the second harmonics. The second stage is a phase shifter that controls the location of the second harmonic reflection coefficient phases. The third stage is a high-pass input matching circuit that transforms the complex conjugate device input impedance to a real impedance.

Abstract: Embodiments of an RF amplifier package include a body section comprising an upper surface having first and second opposing edge sides, and a die pad vertically recessed beneath the upper surface and comprising first and second opposing sides and a third side intersecting with the first and second sides. Embodiments also include first and second leads disposed on the upper surface, the second lead extending from adjacent to the second side to the second edge side; and a biasing strip connected to the second lead and disposed on the upper surface adjacent to the third side. Other embodiments include packaged RF amplifiers comprising an RF amplifier package, and an RF transistor mounted on the die pad and comprising: a control terminal electrically coupled to the first lead, a reference potential terminal directly facing and electrically connected to the die pad, and an output terminal electrically connected to the second lead.

Abstract: A phase shifter having a four port hybrid coupler is provided. The four port hybrid coupler has first and second input ports and first and second output ports. The four port hybrid coupler is configured to shift the phase of an RF signal as between the first and second input ports. First and second active semiconductor devices are connected to first and second output ports. The first and second active semiconductor devices are configured to change the phase shift of the RF signal as between the first and second input ports based upon a varying voltage.

Abstract: An upper receiver for the one family of firearms allows for the use of a bolt of another firearm family in the firearm action. In the depicted embodiment, an AR-15 bolt and its carrier group are simple drop-in with only the addition of a sear plate, clamp, and an insert into the bolt carrier group. The depicted receiver is designed to also prevent its use on the semi-automatic variants of the MAC family.

Abstract: Exemplary impedance matching circuit for an amplifier device comprises a broadband impedance transformer configured to transform, over a fundamental frequency range, an impedance associated with an input port or an output port of the impedance matching circuit; and to transmit RF signals having a fundamental frequency within the fundamental frequency range. The impedance matching circuit also includes a phase shifter circuit configured to transmit, with substantially matched impedance, the RF signals having a fundamental frequency within the fundamental frequency range, and to phase-shift higher-order harmonics of the RF signals. The impedance matching circuit also includes a high-pass impedance transformer configured to match an impedance of the RF signals having a fundamental frequency within the fundamental frequency range; and to transmit, with low reflection, second-order harmonics of the RF signals.

Abstract: Treated biochar and methods for treating biochar are provided. The method for treating the biochar includes forcing, assisting or accelerating the movement of an infiltrant into the pores of the biochar, whereby the treatment affects properties of the biochar that provide for a more reliable and predictable biochar for use in various applications, including, but not limited to, agricultural applications.

Abstract: Biochars and methods for treating biochars are provided that are useful in various applications, including, but not limited to, applications related to the raising, care, maintenance, disease prevention, disease treatment and odor control of animals.

Abstract: Biochars and methods for treating biochars are provided that are useful in various applications, including, but not limited to, applications related to the raising, care, maintenance, disease prevention, disease treatment and odor control of animals.

Abstract: Biochar is provided that is treated to have certain chemical and physical properties found to have the highest impact on plant growth and/or soil health. In particular, the following physical and/or chemical properties, among others, of a biochar have been identified as critical properties to control for in the selection of biomass feedstock, pyrolysis conditions, and/or enhancing treatment to increase biochar performance: (i) bulk density (ii) impregnation capacity; (iii) particle size distribution; (iv) solid particle density; (v) surface area; (vi) porosity; (vii) total porosity; (viii) ratio of macroporosity to total porosity (ix) content of residual organic compounds; (x) content of volatile organic compounds; (xii) ash content; (xiii) water holding capacity; (xiv) water retention capabilities; (xv) levels of dioxins and other potentially hazardous byproducts of pyrolysis; and (xvi) pH.

Abstract: An active noise cancelling power supply to perform active noise cancelling of input power with noise to output power. The active noise cancelling power supply having a power transformation device receiving input power and converting the power to a voltage signal with a ripple. The active noise cancelling power supply has a ripple measuring device, which measures the ripple as the voltage signal with a ripple passes through the ripple measuring device producing a ripple signal. A controller with a data storage in communication with a processor, wherein computer instructions in the data storage are configured to instruct the processor to produce a first noise cancellation signal in volts or millivolts out of phase with the ripple signal and inject the first noise cancellation signal on the voltage signal with a ripple at a node forming a clean signal as output power.

Abstract: The optimization of fulfillment option benefits is described. In one example, selected offers for items are assembled for a transaction. A fulfillment option benefit, such as a delivery or shipping benefit, is identified for a first one of the items. A system determines whether an offer for a second one of the items contributes to qualification for the same fulfillment option benefit. When the offer for the second item does not contribute, the system searches for any other second item offers that do contribute to qualification for the benefit. If multiple other offers are found, the system ranks the other offers to identify a preferred other offer for the second item. The system then calculates a difference between the originally-selected offer and the preferred offer for the second item and generates a qualification contribution notification that highlights the preferred other offer as contributing to the fulfillment option benefit.

Abstract: Biochar aggregate particles are provided that are less than 5 mm and are comprised of biochar fines that are less than 1 mm and a binding agent. The binding agent may be clay, starch, a lignin, a polymer and/or a lipid. The biochar aggregate particles may also include additives and/or surfactants. The biochar fines may further be treated with a surfactant solution, a vacuum, ultrasonics or infused with any number of additives.

Abstract: A method for producing biochar aggregate particles that comprising the steps of (i) collecting or producing treated biochar fines less than 1 mm, (ii) adding a binding agent to the fines, (iii) forming the fines and binding agent into solid aggregate particles. The steps may further include, for example, adding additives to the fines, drying the solid aggregate particles, activing the binder after forming the solid aggregate particles with heat or cold temperatures and/or treating the biochar fines prior to forming the aggregate particles.

Abstract: An amplifier circuit includes an input port, an output port, and a reference potential port, an RF amplifier device having an input terminal electrically coupled to the input port, an output terminal electrically coupled to the output port, and a reference potential terminal electrically coupled to the reference potential port. An impedance matching network is electrically connected to the output terminal, the reference potential port, and the output port. The impedance matching network includes a reactive efficiency optimization circuit that forms a parallel resonant circuit with a characteristic output impedance of the peaking amplifier at a center frequency of the fundamental frequency range. The impedance matching network includes a reactive frequency selective circuit that negates a phase shift of the RF signal in phase at the center frequency and exhibits a linear transfer characteristic in a baseband frequency range.

Abstract: A method, an apparatus, and a computer program product for digitally presenting a statistically relevant business insights into a set of business metrics for an organization. A computer system generates a plurality of dimension aggregates for facts of human resources data across a plurality of different combinations of dimensions of human resources data. The computer system identifies a set of comparable aggregates among the plurality of dimension aggregates based on an intersection of the dimensions of human resources data among the different combinations. The computer system generates a set of statistics for each comparable aggregate of the set of comparable aggregates. The computer system generates a business insight into the set of business metrics of the organization based on the set of statistics for the set of comparable aggregates. The computer system digitally presents the business insight.

Abstract: An amplifier circuit includes an input port, an output port, and a reference potential port, an RF amplifier device having an input terminal electrically coupled to the input port, an output terminal electrically coupled to the output port, and a reference potential terminal electrically coupled to the reference potential port. An impedance matching network is electrically connected to the output terminal, the reference potential port, and the output port. The impedance matching network includes a reactive efficiency optimization circuit that forms a parallel resonant circuit with a characteristic output impedance of the peaking amplifier at a center frequency of the fundamental frequency range. The impedance matching network includes a reactive frequency selective circuit that negates a phase shift of the RF signal in phase at the center frequency and exhibits a linear transfer characteristic in a baseband frequency range.

Abstract: Exemplary embodiments including an amplifier circuit that includes a radio-frequency (RF) amplifier comprising an input terminal and an output terminal, the RF amplifier being configured to amplify, across a wideband frequency range, an RF signal applied to the input terminal to generate an amplified RF signal at the output terminal. The amplifier circuit also includes a first impedance matching network connected to the RF amplifier output terminal. The first impedance matching network includes a first reactive circuit, having substantially fixed impedance, connected between the RF amplifier input terminal and ground; a second reactive circuit; and a switching device configured to couple the second reactive circuit to the first reactive circuit in an ON state, and to decouple the second reactive circuit from the first reactive circuit in an OFF state. In some embodiments, the amplifier circuit can include a second impedance matching network connected to the RF amplifier input terminal.

Abstract: An amplifier circuit includes an input port, an output port, and a reference potential port, an RF amplifier device having an input terminal electrically coupled to the input port, an output terminal electrically coupled to the output port, and a reference potential terminal electrically coupled to the reference potential port. An impedance matching network is electrically connected to the output terminal, the reference potential port, and the output port. The impedance matching network includes a reactive efficiency optimization circuit that forms a parallel resonant circuit with a characteristic output impedance of the peaking amplifier at a center frequency of the fundamental frequency range. The impedance matching network includes a reactive frequency selective circuit that negates a phase shift of the RF signal in phase at the center frequency and exhibits a linear transfer characteristic in a baseband frequency range.