Abstract: A method of making a high strength base-hardened tee rail and the tee rail produced by the method. The method includes the steps of providing a carbon steel tee rail, the steel tee rail provided at a temperature between 700 and 800° C.; and cooling the steel tee rail at a cooling rate that the temperature in ° C. of the surface of the base of said steel tee rail, is maintained in a region between: an upper cooling rate boundary plot defined by an upper line connecting xy-coordinates (0 s, 800° C.), (80 s, 675° C.), (110 s, 650° C.) and (140 s, 663° C.); and a lower cooling rate boundary plot defined by a lower line connecting xy-coordinates (0 s, 700° C.), (80 s, 575° C.), (110 s, 550° C.) and (140 s, 535° C.).

Abstract: In a frequency control system, a system controller assigns load-specific threshold frequencies to electrical loads of a fleet of electrical loads. Load controllers perform load monitoring and control operations for controlled electrical loads of the fleet including (i) comparing a measurement of the electrical frequency with the threshold frequency assigned to the controlled electrical load and (ii) operating the controlled electrical load based on the comparison. For example, each load controller may perform operation (ii) by turning the controlled electrical load on if the measurement of the electrical frequency is greater than the threshold frequency assigned to the controlled electrical load, and turning the controlled electrical load off if the measurement of the electrical frequency is less than the threshold frequency assigned to the controlled electrical load. The threshold frequencies may be assigned based on State of Charge (SOC) values for the loads.

Abstract: A cold load pickup device includes a load controller comprising a microprocessor or microcontroller. The device is programmed to detect restoration of power after a power outage on a circuit powering an electric load. A power outage time for the power outage is determined, and a startup delay for the electric load is determined based on the power outage time. A startup delay mechanism, such as a power relay operated by the load controller or switching of the load on/off by the load controller, is configured to apply the startup delay after the detected restoration of power before restarting the electric load. In some embodiments, the startup delay for the electric load is determined based on the power outage time and a startup delay versus power outage time curve stored in a non-volatile memory of the load controller.

Abstract: The disclosed technology concerns methods, apparatus, and systems for using telemetry data from a large number of remote computing devices to address complex problems otherwise prone to subjective inaccuracies. Particular embodiments disclosed herein involve classifying the difficulty of solving (or completing) an objective presented by a certain item of digital content. For instance, certain example embodiments involve collecting telemetry data from hundreds or thousands of users engaging with a respective content item, and, based at least in part on that telemetry data, assigning a difficulty classification to the content item.

Abstract: Loads on a distribution circuit are operated, which causes the loads to consume electricity delivered to the loads via the distribution circuit. A circuit voltage of the distribution circuit is measured. An excursion of the measured circuit voltage outside of a normal operating voltage range is responded to by triggering a sub-set of the loads on the distribution circuit to increase or decrease their power draw to counter the excursion. For an overvoltage condition, the responding comprises triggering a sub-set of the loads on the distribution circuit to operate, or increase their power draw, in order to reduce the circuit voltage. For an undervoltage condition, the responding comprises triggering a sub-set of the loads on the distribution circuit to cease operating, or reduce their power draw, in order to increase the circuit voltage.

Abstract: A load controller is connected with a residential electric load to regulate electric power drawn by the load from a residential a.c. electric power distribution system via power input terminals of the load. A voltmeter is connected to measure voltage at the power input terminals, and an ammeter is connected to measure electric current at the power input terminals. A microprocessor or microcontroller is programmed to compute a source impedance of the power distribution system as seen from the power input terminals using measured voltage and electric current at the power input terminals. The source impedance may be computed by determining an equivalent source voltage as equal to measured voltage at the power input terminals when the electric current at the power input terminals is zero, and computing the source impedance from measured non-zero electric current at the power input terminals in combination with at least the equivalent source voltage.

Abstract: A plurality of interactive electrical loads defines an aggregation connected with an electrical power grid. A scheduler generates a baseline power consumption schedule for the aggregation, determines frequency regulation capacity of the aggregation, and controls actual power consumption of the aggregation based on the baseline power consumption and an Automated Generation Control (AGC) signal of the electrical power grid to operate the aggregation as an ancillary frequency control device of the electrical power grid with the determined frequency regulation capacity.

Abstract: A load controller is connected with a residential electric load to regulate electric power drawn by the load from a residential a.c. electric power distribution system via power input terminals of the load. A voltmeter is connected to measure voltage at the power input terminals, and an ammeter is connected to measure electric current at the power input terminals. A microprocessor or microcontroller is programmed to compute a source impedance of the power distribution system as seen from the power input terminals using measured voltage and electric current at the power input terminals. The source impedance may be computed by determining an equivalent source voltage as equal to measured voltage at the power input terminals when the electric current at the power input terminals is zero, and computing the source impedance from measured non-zero electric current at the power input terminals in combination with at least the equivalent source voltage.

Abstract: A cold load pickup device includes a load controller comprising a microprocessor or microcontroller. The device is programmed to detect restoration of power after a power outage on a circuit powering an electric load. A power outage time for the power outage is determined, and a startup delay for the electric load is determined based on the power outage time. A startup delay mechanism, such as a power relay operated by the load controller or switching of the load on/off by the load controller, is configured to apply the startup delay after the detected restoration of power before restarting the electric load. In some embodiments, the startup delay for the electric load is determined based on the power outage time and a startup delay versus power outage time curve stored in a non-volatile memory of the load controller.

Abstract: In a frequency control system, a system controller assigns load-specific threshold frequencies to electrical loads of a fleet of electrical loads. Load controllers perform load monitoring and control operations for controlled electrical loads of the fleet including (i) comparing a measurement of the electrical frequency with the threshold frequency assigned to the controlled electrical load and (ii) operating the controlled electrical load based on the comparison. For example, each load controller may perform operation (ii) by turning the controlled electrical load on if the measurement of the electrical frequency is greater than the threshold frequency assigned to the controlled electrical load, and turning the controlled electrical load off if the measurement of the electrical frequency is less than the threshold frequency assigned to the controlled electrical load. The threshold frequencies may be assigned based on State of Charge (SOC) values for the loads.

Abstract: Loads on a distribution circuit are operated, which causes the loads to consume electricity delivered to the loads via the distribution circuit. A circuit voltage of the distribution circuit is measured. An excursion of the measured circuit voltage outside of a normal operating voltage range is responded to by triggering a sub-set of the loads on the distribution circuit to increase or decrease their power draw to counter the excursion. For an overvoltage condition, the responding comprises triggering a sub-set of the loads on the distribution circuit to operate, or increase their power draw, in order to reduce the circuit voltage. For an undervoltage condition, the responding comprises triggering a sub-set of the loads on the distribution circuit to cease operating, or reduce their power draw, in order to increase the circuit voltage.

Abstract: A plurality of interactive electrical loads defines an aggregation connected with an electrical power grid. A scheduler generates a baseline power consumption schedule for the aggregation, determines frequency regulation capacity of the aggregation, and controls actual power consumption of the aggregation based on the baseline power consumption and an Automated Generation Control (AGC) signal of the electrical power grid to operate the aggregation as an ancillary frequency control device of the electrical power grid with the determined frequency regulation capacity.

Abstract: A hand-held system and method for detecting impaired electric power equipment. An exemplary embodiment may receive electromagnetic radiation and process the resulting signal. For example, signal processing may be used to identify electromagnetic radiation having a particular pattern that is characteristic of electric power equipment. Furthermore, an embodiment may determine the time and/or location during testing. As a result, an exemplary embodiment may be useful for stationary and/or mobile testing of an electrical system.

Abstract: A system and method for detecting impaired electric power equipment. An exemplary embodiment may receive electromagnetic radiation and process the resulting signal. For example, signal processing may be used to identify electromagnetic radiation having a particular pattern that is characteristic of electric power equipment. Furthermore, an embodiment may determine the time and/or location during testing. As a result, an exemplary embodiment may be useful for stationary and/or mobile testing of an electrical system.

Abstract: A credibility card contains a claim about a resource, a way to identify the claimant, and a set of choices to be voted on about the claim. A resource can be information content, a product, or another item about which a claim can be made, and it may be associated with a Uniform Resource Indicator (URI). Information (e.g., a web page) that contains or describes the resource includes the credibility card, and a user viewing the information is given the chance to vote on the claims, such as by indicating agreement or disagreement with the claim. The votes are stored in a repository, which may protect the votes from being deleted. Users can view the tally of votes in order to judge the credibility of the claim or the claimant.

Abstract: Systems and methods for generating an interactive zoom interface for an electronic device include electronically displaying a first graphical user interface area to a user. Input is then received from a user indicating a desire to initiate a magnified or zoomed display state. Upon receipt of such electronic input, a second user interface area is displayed to a user. The second user interface area (i.e., a zoom frame) corresponds to a magnified view of some or all of the first user interface area, which may be displayed in place of or overlaid on some or all of the first user interface area. The second user interface area may include at least one zoom toolbar portion including selectable controls such as but not limited to one or more of a zoom in, zoom out, zoom amount, pan directions, scroll directions, cancel/dismiss, contrast and display options, zoom frame toolbar position options, etc.

Abstract: A hand-held system and method for detecting impaired electric power equipment. An exemplary embodiment may receive electromagnetic radiation and process the resulting signal. For example, signal processing may be used to identify electromagnetic radiation having a particular pattern that is characteristic of electric power equipment. Furthermore, an embodiment may determine the time and/or location during testing. As a result, an exemplary embodiment may be useful for stationary and/or mobile testing of an electrical system.

Abstract: A credibility card contains a claim about a resource, a way to identify the claimant, and a set of choices to be voted on about the claim. A resource can be information content, a product, or another item about which a claim can be made, and it may be associated with a Uniform Resource Indicator (URI). Information (e.g., a web page) that contains or describes the resource includes the credibility card, and a user viewing the information is given the chance to vote on the claims, such as by indicating agreement or disagreement with the claim. The votes are stored in a repository, which may protect the votes from being deleted. Users can view the tally of votes in order to judge the credibility of the claim or the claimant.

Abstract: A communication server (58) includes a plurality of pairs of frequency agile modulators (638) and demodulators (640) each set to operate at a unique frequency and associated with a twisted pair data line (54). The communication server (58) also includes a plurality of pairs of demodulators (644) and modulators (646) that each have a designatable operation frequency and are associated with one of a plurality of XDSL modems (648). A mixer (642) operates to combine signals from the frequency agile modulators (638) and provide the combined signal to the demodulators (644). The mixer (642) further operates to combine signals from the modulators (646) and provide the combined signal to the frequency agile demodulators (640). A detector (634) operates to detect a need for data service on a selected twisted pair data line (54).

Abstract: A communication server includes a modem pool (652) that comprises a plurality of XDSL modems (660). The communication server also includes a plurality of line interface modules (650). Each line interface module (650) has a plurality of inputs each coupled to a twisted pair data line and has a plurality of outputs each coupled to one of the XDSL modems (660). Each line interface module (650) operates to detect a need for data service on a requesting twisted pair data line and to couple the requesting twisted pair data line to an output associated with a selected XDSL modem (660). A controller (653) is coupled to the XDSL modems (660) and to the plurality of line interface modules (650). The controller (653) operates to select one of the XDSL modems (660) in response to a detected need for data service.