Abstract: A wireless power transmission (WPT) system. Implementations may include a power source coupled with a first wireless power transmission (WPT) system and a load coupled with a second WPT system including a sense circuit. The second WPT system, using the sense circuit, may be configured to dynamically tune a resonance of the second WPT system with the first WPT system to a desired resonance frequency value to allow transfer of a desired voltage or a desired power to the load. The desired resonance frequency value may be less than a maximum possible resonance frequency value. The first WPT system may be capable of transmitting more voltage or more power than the second WPT system or the load can receive without inducing damage to the second WPT system or the load.

Abstract: In one general aspect, an amplifier can include an input amplifier circuit configured to receive a bias current and receive, as an input, a signal pair connected differentially to the input amplifier circuit, the input amplifier circuit configured to output a differential output signal pair based on the received differential input signal pair, a feedback amplifier circuit configured to receive an average of the differential output signal pair and configured to provide a bias setting output for controlling the bias current, and an output buffer circuit configured to buffer the differential output signal pair, the buffering resulting in a buffered differential output signal pair capable of driving a resistive load.

Abstract: This invention relates to a surgical device for the detection of the pedicle screws trajectories of a patient undergoing to scoliosis or spondylosis correction. The device is a patient specific and has information about screw size and position. The increased use of pedicle screws in scoliosis creates a challenge for accurate and safe placement of screw within the pedicle during the scoliosis surgery. Patient-specific templates (PST), is an alternative method to guide the surgeons for detecting the positions and trajectories of pedicle screws in scoliosis and spondylosis fixation surgery. This 3D model constructed during PST process can be also 3D printed as a physical model, which can help surgeons to develop an accurate and safe position of pedicle screws and its trajectories. This device has the ability to customize the placement and the size of each pedicle screw based on the unique morphology and landmarks of the vertebrae.

Abstract: A crystal oscillator circuit that can be controlled for fast start-up and for efficient operation is disclosed. The control includes adjusting a voltage applied to a body terminal of a transistor in order to control the amplification of the crystal oscillator. The amplification can be increased, relative to a motional resistance of the crystal oscillator, at start-up to reduce a start-up time necessary for oscillation. The amplification can also be decreased in order to maintain oscillation after start-up more efficiently. In some implementations, the transistor for control is a fully depleted silicon on insulator (FDSOI) transistor that accommodates a wide range of body bias voltages.

Abstract: In one general aspect, an amplifier can include an input amplifier circuit configured to receive a bias current and receive, as an input, a signal pair connected differentially to the input amplifier circuit, the input amplifier circuit configured to output a differential output signal pair based on the received differential input signal pair, a feedback amplifier circuit configured to receive an average of the differential output signal pair and configured to provide a bias setting output for controlling the bias current, and an output buffer circuit configured to buffer the differential output signal pair, the buffering resulting in a buffered differential output signal pair capable of driving a resistive load.

Abstract: In one general aspect, an amplifier can include an input amplifier circuit configured to receive a bias current and receive, as an input, a signal pair connected differentially to the input amplifier circuit, the input amplifier circuit configured to output a differential output signal pair based on the received differential input signal pair, a feedback amplifier circuit configured to receive an average of the differential output signal pair and configured to provide a bias setting output for controlling the bias current, and an output buffer circuit configured to buffer the differential output signal pair, the buffering resulting in a buffered differential output signal pair capable of driving a resistive load.

Abstract: A wireless power transmission (WPT) system. Implementations may include a power source coupled with a first wireless power transmission (WPT) system and a load coupled with a second WPT system including a sense circuit. The second WPT system, using the sense circuit, may be configured to dynamically tune a resonance of the second WPT system with the first WPT system to a desired resonance frequency value to allow transfer of a desired voltage or a desired power to the load. The desired resonance frequency value may be less than a maximum possible resonance frequency value. The first WPT system may be capable of transmitting more voltage or more power than the second WPT system or the load can receive without inducing damage to the second WPT system or the load.

Abstract: In one general aspect, an amplifier can include an input amplifier circuit configured to receive a bias current and receive, as an input, a signal pair connected differentially to the input amplifier circuit, the input amplifier circuit configured to output a differential output signal pair based on the received differential input signal pair, a feedback amplifier circuit configured to receive an average of the differential output signal pair and configured to provide a bias setting output for controlling the bias current, and an output buffer circuit configured to buffer the differential output signal pair, the buffering resulting in a buffered differential output signal pair capable of driving a resistive load.

Abstract: The present disclosure relates to an athletic performance monitoring device that could be worn over a limb of an athlete for assessing the motions of the limb. The device comprises of a flexible sleeve that could be worn around the limb; an elongated flexible member that can be mounted over the flexible sleeve and multiple motion sensors embedded at appropriate positions over the elongated flexible member for sensing the motions of the limb. The device is particularly useful in the sport of cricket wherein the device could be mounted over the bowling arm of the bowler for differentiating between the illegal and legal bowling action by assessing the kinematics of the elbow joint during the latter stages of ball delivery. Further the device may be configured for monitoring the arm force, action time, and twist in the bowler's arm just before the ball is released in the course of ball delivery.

Abstract: A wireless power transmission (WPT) system. Implementations may include a power source coupled with a first wireless power transmission (WPT) system and a load coupled with a second WPT system including a sense circuit. The second WPT system, using the sense circuit, may be configured to dynamically tune a resonance of the second WPT system with the first WPT system to a desired resonance frequency value to allow transfer of a desired voltage or a desired power to the load. The desired resonance frequency value may be less than a maximum possible resonance frequency value. The first WPT system may be capable of transmitting more voltage or more power than the second WPT system or the load can receive without inducing damage to the second WPT system or the load.

Abstract: A wireless power transmission (WPT) system. Implementations may include a power source coupled with a first wireless power transmission (WPT) system and a load coupled with a second WPT system including a sense circuit. The second WPT system, using the sense circuit, may be configured to dynamically tune a resonance of the second WPT system with the first WPT system to a desired resonance frequency value to allow transfer of a desired voltage or a desired power to the load. The desired resonance frequency value may be less than a maximum possible resonance frequency value. The first WPT system may be capable of transmitting more voltage or more power than the second WPT system or the load can receive without inducing damage to the second WPT system or the load.

Abstract: A programmable amplifier includes an amplifier, an input capacitor, a feedback circuit, and a high-pass filter circuit. The amplifier has an input coupled to the input capacitor for receiving an input signal. The feedback circuit includes multiple feedback capacitors of differing capacitance values that are each selectively coupled between the output of the amplifier and the input of the amplifier using multiple first switches. The high-pass filter circuit includes multiple switched capacitors of differing capacitance values that are each selectively coupled between the amplifier output and a ground node using multiple second switches. The first switches are configured to be selectively switched on for activating at least one feedback capacitor to adjust a gain of the amplifier, while the second switches are configured to be selectively switched at a first and second phase of a clock signal to adjust a high-pass cutoff frequency of the amplifier independently of how the gain is adjusted.

Abstract: A programmable amplifier includes an amplifier, an input capacitor, a feedback circuit, and a high-pass filter circuit. The amplifier has an input coupled to the input capacitor for receiving an input signal. The feedback circuit includes multiple feedback capacitors of differing capacitance values that are each selectively coupled between the output of the amplifier and the input of the amplifier using multiple first switches. The high-pass filter circuit includes multiple switched capacitors of differing capacitance values that are each selectively coupled between the amplifier output and a ground node using multiple second switches. The first switches are configured to be selectively switched on for activating at least one feedback capacitor to adjust a gain of the amplifier, while the second switches are configured to be selectively switched at a first and second phase of a clock signal to adjust a high-pass cutoff frequency of the amplifier independently of how the gain is adjusted.

Abstract: A clock circuit includes an amplifier, an electrical supply, a feedback circuit, and a comparator. The amplifier has an input node and an output node that are coupled to a crystal to provide an internal clock signal on the output node at a specified frequency. The electrical supply source provides electrical power to the amplifier at a specified input voltage. The feedback circuit is coupled between the input node and the output node, and forms a low pass filter for attenuating the internally generated clock signal on the input node. The feedback circuit biases the input node at a direct current (DC) voltage level that is biased to be less than the specified input voltage. When an external clock signal is applied at the output node, the comparator generates a digital clock signal according to the external clock signal, and when no external clock signal is applied at the output, the comparator generates the digital clock signal according to the internal clock signal.

Abstract: A wireless power transmission (WPT) system. Implementations may include a power source coupled with a first wireless power transmission (WPT) system and a load coupled with a second WPT system including a sense circuit. The second WPT system, using the sense circuit, may be configured to dynamically tune a resonance of the second WPT system with the first WPT system to a desired resonance frequency value to allow transfer of a desired voltage or a desired power to the load. The desired resonance frequency value may be less than a maximum possible resonance frequency value. The first WPT system may be capable of transmitting more voltage or more power than the second WPT system or the load can receive without inducing damage to the second WPT system or the load.

Abstract: The method for enhancing strength and durability of weak soils includes the steps of selecting a weak soil, such as marl or dune sand, mixing the weak soil with 2% cement by weight and between 5% and 30% by weight of Electric Arc Furnace Dust (EAFD) to form a dry mixture, mixing the dry mixture with water to form a substantially homogenized mixture, and curing the homogenized mixture, wherein curing can include the step of sealing the homogenized mixture in an environment having a temperature between 19° C. and 25° C., inclusive, for seven days.

Abstract: The present invention provides a method of culturing cells and/or controlling cell behaviour, which method comprises: (a) introducing one or more cells into a medium; and (b) allowing said one or more cells to grow within and/or interact with the medium, wherein said medium comprises a three dimensional homogeneous distribution of shear-spun nanofibers.

Abstract: The method for enhancing strength and durability of weak soils includes the steps of selecting a weak soil, such as marl or dune sand, mixing the weak soil with 2% cement by weight and between 5% and 30% by weight of Electric Arc Furnace Dust (EAFD) to form a dry mixture, mixing the dry mixture with water to form a substantially homogenized mixture, and curing the homogenized mixture, wherein curing can include the step of sealing the homogenized mixture in an environment having a temperature between 19° C. and 25° C., inclusive, for seven days.

Abstract: This invention relates to a system and method to enable a business to meet its business goals. Disclosed are certain non-limiting exemplary embodiments which teach a method for reducing the risk a business takes when doing business with customers in an environment where equal pricing is not the best strategy. Based on the business goal information entered into the system, the rating of the user, and other factors determined by the business, it will automatically calculate and make offers to interested users. This invention is particularly suited for the service industry. In one embodiment, a user can request and make payment for travel services.