Abstract: An impact resistant roofing shingle comprising an upper shingle layer; a lower shingle layer laminated to said upper shingle layer underneath said tab portion of said upper shingle layer; wherein each of the upper shingle layer and the lower shingle layer comprise a mat, an upper asphalt coating layer applied to an exposed side of the mat, a lower asphalt coating layer applied to an unexposed side of the mat, a granular coating applied to the upper asphalt coating layer opposite the mat, and a fabric reinforcing layer applied to the lower asphalt coating layer opposite the mat. In one embodiment, the roofing shingle may also include the fabric reinforcing layer covering the entire area of each mat. The roofing shingle may have a recessed area of the exposed side of the overlay layer that aligns with the overlap of the overlay and underlay layers.

Abstract: Inwardly opposed piston, compression ignition engines are quiet, compact in size, and reliable.

Abstract: A system for securely provisioning a plurality of computerized devices of a tenant, is provided. The system includes a processor, and a computer storage medium including instructions that when executed by the processor cause the processor to perform operations. The operations include receiving provisioning requests from the plurality of computerized devices needing certificates, each provisioning request indicating a tenant identifier identifying the tenant, and transmitting the provisioning requests to a set of security credential management system backend components based on the tenant identifier. The set of SCMS backend components includes enrollment certificate authorities operable to generate enrollment certificates, each provisioning request being transmitted to one of the one or more enrollment certificate authorities based on the tenant identifier of each provisioning request, and a pseudonym certificate authority operable to generate digital assets in response to receiving a provisioning request.

Abstract: Engines operating using multiple, different types of fuel are described. The engines may include components that control the introduction of fuels and/or reduce premature pre-ignition of fuels, such as a fuel comprising a percentage of hydrogen. The described hydrogen-fueled engines have a reduced carbon footprint.

Abstract: Ruggedized generators can operate using both medium and heavy fuels and output at least 5 kWe of power, yet are quiet, compact in size, and reliable.

Abstract: A system for securely provisioning a plurality of computerized devices of a tenant, is provided. The system includes a processor, and a computer storage medium including instructions that when executed by the processor cause the processor to perform operations. The operations include receiving provisioning requests from r the plurality of computerized devices needing certificates, each provisioning request indicating a tenant identifier identifying the tenant, and transmitting the provisioning requests to a set of security credential management system backend components based on the tenant identifier. The set of SCMS backend components includes enrollment certificate authorities operable to generate enrollment certificates, each provisioning request being transmitted to one of the one or more enrollment certificate authorities based on the tenant identifier of each provisioning request, and a pseudonym certificate authority operable to generate digital assets in response to receiving a provisioning request.

Abstract: Systems, methods and devices are provided for provisioning a computerized device. The system may include a distributor computer that is connected to the computerized device and is operable to receive a first digital asset and transmit it to the computerized device, and a server that is connected to the distributor computer, and that transmits the first digital asset to the distributor computer when a first authorizing condition is met, the first digital asset being configured to cause the computerized device to become partially provisioned, wherein the server transmits a second digital asset to the computerized device, and the computerized device is functional after the second digital asset is transmitted to the computerized device.

Abstract: Ruggedized generators can operate using both medium and heavy fuels and output at least 5 kWe of power, yet are quiet, compact in size, and reliable.

Abstract: A combined heating and power system is configured to generate energy as well capture a large percentage of energy that would otherwise be lost using components, including heat transfer components, embedded within a vessel to transfer energy in the form of heat to liquid within the vessel.

Abstract: A combined heat and power system generates energy and efficiently captures a percentage of such energy that would otherwise be lost to, among other things, control the temperature and humidity of a house or dwelling.

Abstract: A system for securely provisioning a plurality of computerized devices of a tenant, is provided. The system includes a processor, and a computer storage medium including instructions that when executed by the processor cause the processor to perform operations. The operations include receiving provisioning requests from r the plurality of computerized devices needing certificates, each provisioning request indicating a tenant identifier identifying the tenant, and transmitting the provisioning requests to a set of security credential management system backend components based on the tenant identifier. The set of SCMS backend components includes enrollment certificate authorities operable to generate enrollment certificates, each provisioning request being transmitted to one of the one or more enrollment certificate authorities based on the tenant identifier of each provisioning request, and a pseudonym certificate authority operable to generate digital assets in response to receiving a provisioning request.

Abstract: An example system may include one or more application platforms (e.g., VMs) that run a registration authority and are communicatively connected to one or more compute engines that perform cryptographic computations required by the registration authority. The system may also include one or more application platforms that run an enrollment certificate authority and that are communicatively connected to one or more compute engines that perform cryptographic computations required by the enrollment certificate authority. It may further include one or more application platforms that run a pseudonym certificate authority and that are communicatively connected to one or more compute engines that perform cryptographic computations required by the pseudonym certificate authority. It may also include one or more load balancers communicatively connected to the one or more compute engines, the one or more load balancers to perform operations comprising distributing at least one request to the one or more compute engines.

Abstract: Systems and methods for synchronizing data between an online data source and a client application. The method includes, in response to a change in a permission associated with a user to a protected data set included in a shared data space of the online data source, receiving, with the client application associated with the user, a protected data synchronization token issued by the online data source associated with the protected data set and downloading, with the client application, the protected data set included in the shared data space from the online data source to the client application using the protected data synchronization token without re-downloading a public data set included in the shared data space. After downloading the protected data set, the method includes synchronizing the shared data space, including the protected data set and the public data set, using a stored data space synchronization token.

Abstract: A combined heat, cooling and power system is configured to generate energy as well capture a large percentage of energy that would otherwise be lost using components, including heat transfer components, embedded within a vessel to transfer energy in the form of heat to liquid within the vessel.

Abstract: Systems, methods and devices are provided for provisioning a computerized device. The system may include a distributor computer that is connected to the computerized device and is operable to receive a first digital asset and transmit it to the computerized device, and a server that is connected to the distributor computer, and that transmits the first digital asset to the distributor computer when a first authorizing condition is met, the first digital asset being configured to cause the computerized device to become partially provisioned, wherein the server transmits a second digital asset to the computerized device, and the computerized device is functional after the second digital asset is transmitted to the computerized device.

Abstract: A combined heat and power system generates energy and efficiently captures a percentage of such energy that would otherwise be lost to, among other things, control the temperature and humidity of a house or dwelling.

Abstract: A system for provisioning computerized devices of a plurality of tenants is provided. The system includes a security credential management system (SCMS) host connected to the devices and that is operable to receive provisioning requests from respective ones of the devices needing certificates, each provisioning request indicating a tenant identifier uniquely identifying a tenant, at least one registration authority that is communicatively connected to the SCMS host and transmits the provisioning requests to SCMS backend components based on the tenant identifier of each provisioning request.

Abstract: An example system may include one or more application platforms (e.g., VMs) that run a registration authority and are communicatively connected to one or more compute engines that perform cryptographic computations required by the registration authority. The system may also include one or more application platforms that run an enrollment certificate authority and that are communicatively connected to one or more compute engines that perform cryptographic computations required by the enrollment certificate authority. It may further include one or more application platforms that run a pseudonym certificate authority and that are communicatively connected to one or more compute engines that perform cryptographic computations required by the pseudonym certificate authority. It may also include one or more load balancers communicatively connected to the one or more compute engines, the one or more load balancers to perform operations comprising distributing at least one request to the one or more compute engines.

Abstract: Systems, methods and devices are provided for provisioning a computerized device. The system may include a distributor computer that is connected to the computerized device and is operable to receive a first digital asset and transmit it to the computerized device, a server that is connected to the distributor computer, and that transmits the first digital asset to the distributor computer when a first authorizing condition is met, the first digital asset being configured to cause the computerized device to become partially provisioned, and a provisioning controller that is connected to the distributor computer and that determines whether the first authorizing condition is met, the server transmits a second digital asset to the computerized device, and the computerized device is functional after the second digital asset is transmitted to the computerized device.

Abstract: An opposed-piston engine optionally contains an ignition system that is at least partially contained within the combustion chamber to enhance the combustion efficiency of a fuel-air mixture within the combustion system. More specifically, the ignition system contains at least one spark plug having an elongated center electrical delivery electrode, and, an elongated ground electrode. Accordingly, the elongated electrodes extend from an area adjacent to the inner periphery of the cylinder to a radially central area within the combustion chamber. Yet further, a cooling jacket is incorporated to provide cooling of the spark plug.