Abstract: An elliptical trainer includes a base frame, a front upright frame mounted at the front side of the base frame, a transmission device set mounted at the front upright frame, a guide rail device set including a guide rail seat pivotally connected with its rear side to the rear side of the base frame, an upper support unit affixed to the front side of the guide rail seat and a lower support unit pivotally connected to the front side of the guide rail seat and biasable up and down relative to the front side of the guide rail seat, a retractable device set pivotally connected between the upper support unit and the lower support unit, and a pedal device set connected to the transmission device set and slidably supported on the guide rail seat.

Abstract: The invention provides a polyurethane pultrusion article comprising a polyurethane pultrusion composite and a coating layer applied thereon, wherein the polyurethane pultrusion composite comprises a polyurethane resin matrix and a reinforcement material, and is prepared by a polyurethane pultrusion process, wherein the polyurethane resin matrix is prepared from a polyurethane composition comprising: A) an isocyanate component comprising one or more polyisocyanates; B) an isocyanate-reactive component comprising: b1) a first polyether polyol having a functionality of 2-3 and a hydroxyl number of 10-120 mgKOH/g; b2) a second polyether polyol having a functionality of 3-8 and a hydroxyl number of 810-1900 mgKOH/g; b4) one or more isocyanate-reactive flame retardants. The polyurethane pultrusion article provided by the invention has both favorable flame retardance and good adhesion between the coating layer and the composite.

Abstract: A system for measuring and mapping sheet resistivity of the film on flat-panel has a frame, a collection of leveling chucks, a probe-mounting assembly, and a collection of four-point probes. The probe-mounting assembly is a frame that holds the four-point probes in place. The leveling chucks and the probe-mounting assembly are mounted onto the frame, within the probe chamber. The flat panel is positioned in between the probe-mounting assembly and the leveling chucks. The sheet resistivity measurement by each of the collection of four-point probes can be done by electrical switching instead of mechanical repositioning and the flat panel transportation to and from the measurement position only needs to be done in one round trip instead of two, thus much time is saved. Also, the leveling chuck's speed in pressing the flat panel against the collection of four-point probes can be well controlled to avoid damaging of the flat panel.

Abstract: A method for displaying messages that are placed on packages being shipped to consumers in the form of labels that are targeted to specific consumers based on publicly available data or shopping behavior data. The method includes receiving information regarding one or more packages to be delivered to one or more recipients. The method also includes retrieving promotion data regarding one or more promotions targeted to the one or more recipients. One or more personalized promotion labels are generated from the promotion data.

Abstract: A disclosed method for secured multi-payload antennas operators operations comprises generating, by an antenna operations center (AOC), AOC commands using an antenna location pointing request for each of at least one antenna associated with each of at least one customer. The method further comprises transmitting, by a satellite operation center (SOC), the AOC commands and SOC commands to a vehicle via a ground antenna, where the SOC commands are related to at least one antenna associated with a host. Also, the method comprises generating customer antenna gimballing commands by using the AOC commands, and generating host antenna gimballing commands by using the SOC commands. Further, the method comprises gimballing respectively each of the antenna(s) associated with each of the customer(s) by using the customer antenna gimballing commands, and gimballing respectively each of the antenna(s) associated with the host by using the host antenna gimballing commands.

Abstract: An elliptical trainer includes a base frame, a front upright frame mounted at the front side of the base frame, a transmission device set mounted at the front upright frame, a guide rail device set including a guide rail seat pivotally connected with its rear side to the rear side of the base frame, an upper support unit affixed to the front side of the guide rail seat and a lower support unit pivotally connected to the front side of the guide rail seat and biasable up and down relative to the front side of the guide rail seat, a retractable device set pivotally connected between the upper support unit and the lower support unit, and a pedal device set connected to the transmission device set and slidably supported on the guide rail seat.

Abstract: The present disclosure relates to a voltage reference generator without temperature dependency. The disclosed voltage reference generator includes a precursor voltage generator and a voltage extractor. The precursor voltage generator is configured to provide a base-emitter voltage, a proportional-to-absolute-temperature (PTAT) voltage, and a nonlinear (NL) voltage. The voltage extractor is configured to scale and sum the base-emitter voltage, the NL voltage, and the PTAT voltage and provide an output voltage, such that linear temperature dependent components and nonlinear temperature dependent components within the base-emitter voltage, the NL voltage, and the PTAT voltage are not included in the output voltage, which is temperature independent.

Abstract: The invention provides a polyurethane pultrusion article comprising a polyurethane pultrusion composite and a coating layer applied thereon, wherein the polyurethane pultrusion composite comprises a polyurethane resin matrix and a reinforcement material, and is prepared by a polyurethane pultrusion process, wherein the polyurethane resin matrix is prepared from a polyurethane composition comprising: A) an isocyanate component comprising one or more polyisocyanates; B) an isocyanate-reactive component comprising: b1) a first polyether polyol having a functionality of 2-3 and a hydroxyl number of 10-120 mgKOH/g; b2) a second polyether polyol having a functionality of 3-8 and a hydroxyl number of 810-1900 mgKOH/g; b4) one or more isocyanate-reactive flame retardants. The polyurethane pultrusion article provided by the invention has both favorable flame retardance and good adhesion between the coating layer and the composite.

Abstract: A disclosed method for secured multi-payload antennas operators operations comprises generating, by an antenna operations center (AOC), AOC commands using an antenna location pointing request for each of at least one antenna associated with each of at least one customer. The method further comprises transmitting, by a satellite operation center (SOC), the AOC commands and SOC commands to a vehicle via a ground antenna, where the SOC commands are related to at least one antenna associated with a host. Also, the method comprises generating customer antenna gimballing commands by using the AOC commands, and generating host antenna gimballing commands by using the SOC commands. Further, the method comprises gimballing respectively each of the antenna(s) associated with each of the customer(s) by using the customer antenna gimballing commands, and gimballing respectively each of the antenna(s) associated with the host by using the host antenna gimballing commands.

Abstract: The present disclosure relates to a digital-to-analog converter (DAC) linearization system including a DAC, a summing buffer structure, an analog-to-digital converter (ADC), a calculation system, an error look-up table, and an adder. A combination of the DAC, the summing buffer structure, and the ADC sequentially provide first and second ADC output signals, both of which include DAC integral nonlinearity (INL). The calculation system calculates the DAC INL based on the first and second ADC output signals, the error look-up table provides a correction signal mapping to the calculated DAC INL, and the adder provides a calibrated digital input signal to the DAC based on the correction signal. The calibrated digital input signal ensures the DAC to generate an updated output signal with less nonlinearity and improved purity.

Abstract: Optical polarization-based devices and techniques are provided to enable low cost construction and easy signal processing to measure the light frequency via measurements of signals associated with a delay between the two orthogonal polarizations after passing through a DGD element and the retardation value of the DGD element without directly measuring the optical frequency. The optical detection may be designed in various configurations. In particular, for example, the optical detection may split the optical output of the DGD into two optical beams with two different optical detectors so that the final frequency information can be deducted into a pair of sine and cosine functions, such as a pair of sine and cosine functions of measured optical signal levels and the retardation value of the DGD element.

Abstract: A disclosed method for secured multi-payload antennas operators operations comprises generating, by an antenna operations center (AOC), AOC commands using an antenna location pointing request for each of at least one antenna associated with each of at least one customer. The method further comprises transmitting, by a satellite operation center (SOC), the AOC commands and SOC commands to a vehicle via a ground antenna, where the SOC commands are related to at least one antenna associated with a host. Also, the method comprises generating customer antenna gimballing commands by using the AOC commands, and generating host antenna gimballing commands by using the SOC commands. Further, the method comprises gimballing respectively each of the antenna(s) associated with each of the customer(s) by using the customer antenna gimballing commands, and gimballing respectively each of the antenna(s) associated with the host by using the host antenna gimballing commands.

Abstract: The present invention relates to a method of coating a polyurethane pultrusion composite material, comprising: a) preparing a polyurethane pultrusion composite material by a polyurethane pultrusion process, the polyurethane pultrusion process comprising: impregnating a fiber reinforcing material with polyurethane resin, and then curing the impregnated fiber reinforcing material in a mold to provide a polyurethane pultrusion composite material; and b) drawing the polyurethane pultrusion composite material to leave the mold, and then on-line applying waterborne coating(s) to the polyurethane pultrusion composite material at a temperature ranging from 30 to 90° C. The method according to the present invention can achieve a good coating to the polyurethane pultrusion composite material.

Abstract: The technology disclosed in this application provide for non-destructive and non-contact optical characterization of fiber reinforced plastic composites and other structures under test based on optical transmission scanning.

Abstract: Prior to fabrication of an optical fiber with desired optical properties, a preform geometry is determined dependent upon a fiber geometry that possesses the desired optical properties. The desired geometry may contain a large number of channels. The processor determines the preform geometry by tracking backwards in time the parameters of a set of conformal mappings that describe the cross section of the fiber. Some of the drawing process parameters may be specified, while other parameters may be determined along with the preform geometry. The determined preform geometry may be used to fabricate the required preform. Using this preform, the determined drawing process parameters may be used to draw the desired fiber.

Abstract: A method of forming self-aligned STI regions extending over portions of a Si substrate to enable the subsequent formation of epitaxially grown embedded S/D regions without using a lithography mask and the resulting device are provided. Embodiments include forming a STI etch mask with laterally separated openings over a Si substrate; forming shallow trenches into the Si substrate through the openings; forming first through fourth oxide spacers on opposite sidewalls of the shallow trenches and the openings; forming a deep STI trench between the first and second oxide spacers and between the third and fourth oxide spacers down into the Si substrate; forming a STI oxide layer over the first through fourth oxide spacers and a portion of the STI etch mask, the STI oxide layer filling the deep STI trenches; and planarizing the STI oxide layer down to the portion of the STI etch mask.

Abstract: A method for hosted payload operations comprises transmitting, by a hosted payload (HoP) operation center (HOC), encrypted hosted commands to a host spacecraft operations center (SOC). Also, the method comprises transmitting, by the host SOC, encrypted host commands and the encrypted hosted commands to a vehicle. In addition, the method comprises reconfiguring a host payload according to unencrypted host commands, and reconfiguring a hosted payload according to unencrypted hosted commands. Additionally, the method comprises transmitting, by a host payload antenna, host payload data to a host receiving antenna. In addition, the method comprises transmitting, by a hosted payload antenna, hosted payload data to a hosted receiving antenna and/or host receiving antenna. Also, the method comprises transmitting, by a telemetry transmitter on the vehicle, encrypted host telemetry and encrypted hosted telemetry to the host SOC.

Abstract: Systems, methods, and apparatus for protected multi-operators payload operations are disclosed. In one or more embodiments, a disclosed method for protected multi-operators payload operations comprises transmitting, by a hosted payload (HoP) operation center (HOC), encrypted hosted commands to a host spacecraft operations center (SOC). Also, the method comprises transmitting, by the host SOC, encrypted host commands and the encrypted hosted commands to a vehicle. In addition, the method comprises reconfiguring a payload on the vehicle according to unencrypted host commands and unencrypted hosted commands. Additionally, the method comprises transmitting, by a payload antenna on the vehicle, payload data to a host receiving antenna and a hosted receiving antenna. Also, the method comprises transmitting, by a telemetry transmitter on the vehicle, encrypted host telemetry and encrypted hosted telemetry to the host SOC.

Abstract: Systems, methods, and apparatus for commercial satellite operations with secure enclave for payload operations are disclosed. In one or more embodiments, the disclosed method comprises generating, by a secure enclave of a host satellite operation center (SOC), hosted commands according to service specifications for at least one hosted user. The method further comprises generating, by a SOC operation portion of the host SOC, host commands according to service specifications for a host user. Also, the method comprises transmitting, by the host SOC, the host commands and the hosted commands to a vehicle. In addition, the method comprises reconfiguring a host/hosted payload on the vehicle according to the host commands and the hosted commands. Additionally, the method comprises generating, by the host/hosted payload, host telemetry and hosted telemetry. Also, the method comprises transmitting, by the vehicle, the host telemetry and the hosted telemetry to the host SOC.

Abstract: A disclosed method for secured multi-payload antennas operators operations comprises generating, by an antenna operations center (AOC), AOC commands using an antenna location pointing request for each of at least one antenna associated with each of at least one customer. The method further comprises transmitting, by a satellite operation center (SOC), the AOC commands and SOC commands to a vehicle via a ground antenna, where the SOC commands are related to at least one antenna associated with a host. Also, the method comprises generating customer antenna gimballing commands by using the AOC commands, and generating host antenna gimballing commands by using the SOC commands. Further, the method comprises gimballing respectively each of the antenna(s) associated with each of the customer(s) by using the customer antenna gimballing commands, and gimballing respectively each of the antenna(s) associated with the host by using the host antenna gimballing commands.