Abstract: A method for determining the authenticity of an item, the method comprising: receiving, by an item, a seed; storing the seed in a block of non-volatile memory in the supply item follower component; calculating, by the item follower component, an output of a cryptographic function with the input based on the seed and storing the output in the block of non-volatile memory; iteratively calculating, by the item, the outputs of the cryptographic function wherein for each iteration the input for the cryptographic function is based on the seed and all previous outputs, and for each iteration storing the output in the block of non-volatile memory; and determining the authenticity of the item based on a selected output of the cryptographic function of the item, the selected output being one of the outputs stored in the block of non-volatile memory.

Abstract: A method of determining trust in a supply item in an imaging device for verifying other supply items installed in the imaging device via an algorithm, wherein the imaging device has a plurality of installed supply items. The method comprises: sending challenge data and an indication of the algorithm to a candidate supply item, receiving a challenge response from the candidate supply item, and determining, by the controller, a status of the challenge response, the status being verified or unverified. When the controller determines that the received challenge response is a correct output of the algorithm when the challenge data is input to the algorithm, the status is determined as verified. Further, an imaging device configured to determine trust in a supply item installed in the imaging device for verifying other supply items installed in the imaging device via an algorithm.

Abstract: A method of authenticating a supply item in an imaging device, wherein the supply item is designated as a prover supply item, and a second supply item installed in the imaging device is designated as a verifier supply item. The method comprises: receiving a challenge response from the prover supply item and determining a status of the challenge response. When the verifier supply item determines that the received challenge response is a correct output of an algorithm when challenge data is input to the algorithm, the status is determined as verified. The verifier supply item is disclosed, configured to receive a challenge response from a prover supply item installed in the imaging device, and determine a status of the challenge response. When the verifier supply item determines that the received challenge response is a correct output of an algorithm, the status is determined as verified.

Abstract: An imaging device comprising a controller, a prover supply item and a verifier supply item, where the imaging device is configured to authenticate the prover supply item by: sending a challenge response from the prover supply item to the verifier supply item, and determining a status of the challenge response. When the verifier supply item determines that the received challenge response is a correct output of an algorithm when challenge data is input to the algorithm, the status is determined as verified. A supply item configured to be operable as a prover supply item when installed in an imaging device. The prover supply item is configured to receive an indication of an algorithm to be performed and receive challenge data, perform the algorithm using the challenge data as input to determine a challenge response, and send the challenge response to a verifier supply item.

Abstract: Light therapy is provided to a subject using a system and/or method. The light therapy includes the administration of electromagnetic radiation to the eyeball of the subject underneath the eyelid of the subject while the eyelid of the subject is closed (e.g., as the subject sleeps). The light therapy algorithm may be designed to impact melatonin and/or serotonin levels within the body of the subject in a therapeutically beneficial manner. For example, the light therapy algorithm may be designed to impact melatonin and/or serotonin levels to treat one or more of a sleep and/or mood disorder (e.g., seasonal affective disorder, non-seasonal depression, Circadian rhythm disruption), or other disorders treatable with control over melatonin and/or serotonin levels in the body.

Abstract: An ORC heat engine including a working fluid circuit having an evaporator for heating and evaporating a working fluid, a condenser for cooling and condensing the working fluid, and a positive displacement expander-generator having an inlet in fluid communication with the evaporator and an outlet in fluid communication with the condenser. The ORC heat engine further includes a control system coupled to the positive displacement expander-generator having a switch and driving means, the switch being switchable between a first state and a second state, wherein in the first state the switch is coupled to the driving means, and the positive displacement expander-generator is drivable by the driving means, and in the second state the switch is not coupled to the driving means or the driving means is switched off, and the positive displacement expander-generator is not drivable by the driving means.

Abstract: An ORC heat engine including a working fluid circuit having an evaporator for heating and evaporating a working fluid, a condenser for cooling and condensing the working fluid, and a positive displacement expander-generator having an inlet in fluid communication with the evaporator and an outlet in fluid communication with the condenser. The ORC heat engine further includes a control system coupled to the positive displacement expander-generator having a switch and driving means, the switch being switchable between a first state and a second state, wherein in the first state the switch is coupled to the driving means, and the positive displacement expander-generator is drivable by the driving means, and in the second state the switch is not coupled to the driving means or the driving means is switched off, and the positive displacement expander-generator is not drivable by the driving means.

Abstract: Embodiments of the present disclosure are also directed to a web-configuration system that includes at least one processor and one or more tangible, machine-readable media at least collectively including or storing instructions executable by the at least one processor. The instructions include a module configured to limit configuration options for a welding system based on user selection of a power source for the welding system, a module configured to calculate a weld cable size for the welding system based on the user selection of the power source and user selection of an input voltage, a module configured to assign weld cable characteristics based on the weld cable size and a user selected cable length, and a module configured to assemble a welding system order based at least on the user selection of the power source and the weld cable characteristics.

Abstract: A system and method is provided which utilizes wireless communications to provide a client with timed, geo-referenced information to augment the user experience in a physical environment. The present invention enriches the user environment by providing targeted information regarding the venue, products, services, customer services, social networking, gaming, targeted advertising, or safety.

Abstract: Embodiments of the present disclosure are also directed to a web-configuration system that includes at least one processor and one or more tangible, machine-readable media at least collectively including or storing instructions executable by the at least one processor. The instructions include a module configured to limit configuration options for a welding system based on user selection of a power source for the welding system, a module configured to calculate a weld cable size for the welding system based on the user selection of the power source and user selection of an input voltage, a module configured to assign weld cable characteristics based on the weld cable size and a user selected cable length, and a module configured to assemble a welding system order based at least on the user selection of the power source and the weld cable characteristics.

Abstract: Light therapy is provided to a subject using a system and/or method. The light therapy includes the administration of electromagnetic radiation to the eyeball of the subject underneath the eyelid of the subject while the eyelid of the subject is closed (e.g., as the subject sleeps). The light therapy algorithm may be designed to impact melatonin and/or serotonin levels within the body of the subject in a therapeutically beneficial manner. For example, the light therapy algorithm may be designed to impact melatonin and/or serotonin levels to treat one or more of a sleep and/or mood disorder (e.g., seasonal affective disorder, non-seasonal depression, Circadian rhythm disruption), or other disorders treatable with control over melatonin and/or serotonin levels in the body.

Abstract: A rock drilling bit having PDC radial bearings has journal and cone bearing surfaces with increased contact area to increase load support. The radius of curvature of the bearing pin journal and cone bearing surfaces are matched or conformed on the bearing pressure side. The conformal journal surfaces may be formed on the main journal bearing, the pilot pin radial bearing, or both surfaces. In addition, diamond inlays may be located on the bearing surfaces of the cone, the bearing pin, or both components.

Abstract: A rock drilling bit having PDC radial bearings has journal and cone bearing surfaces with increased contact area to increase load support. The radius of curvature of the bearing pin journal and cone bearing surfaces are matched or conformed on the bearing pressure side. The conformal journal surfaces may be formed on the main journal bearing, the pilot pin radial bearing, or both surfaces. In addition, diamond inlays may be located on the bearing surfaces of the cone, the bearing pin, or both components.

Abstract: A rock drilling bit having PDC radial bearings has journal and cone bearing surfaces with increased contact area to increase load support. The radius of curvature of the bearing pin journal and cone bearing surfaces are matched or conformed on the bearing pressure side. The conformal journal surfaces may be formed on the main journal bearing, the pilot pin radial bearing, or both surfaces. In addition, diamond inlays may be located on the bearing surfaces of the cone, the bearing pin, or both components.

Abstract: A rock drilling bit having PDC radial bearings has journal and cone bearing surfaces with increased contact area to increase load support. The radius of curvature of the bearing pin journal and cone bearing surfaces are matched or conformed on the bearing pressure side. The conformal journal surfaces may be formed on the main journal bearing, the pilot pin radial bearing, or both surfaces. In addition, diamond inlays may be located on the bearing surfaces of the cone, the bearing pin, or both components.