Abstract: Disclosed are various embodiments providing user authentication through registered device communications. An authentication request is received from a client device. A user is authenticated for access to a user account based at least in part on the client device providing the authentication token. The authentication token is generated by the client device or by one or more other computing devices and sent to the client device. The client device encrypts the authentication token based at least in part on a user authenticating factor and stores the encrypted authentication token on the client device.

Abstract: A pump includes a pump body having an admission valve movable therein to alternately block and unblock a valve seat to connect a low pressure space to a pumping chamber. A control valve is positioned fluidly between a control chamber and the low pressure space, and moves between a closed position where the control chamber receives high pressure for hydraulically actuating the admission valve, and an open position where the control chamber is connected to the low pressure space to enable closing of the admission valve. The pilot actuation of the admission valve produces a greater travel distance and efficiency than what might be available with certain other actuating mechanisms.

Abstract: Disclosed are various embodiments providing user authentication through registered device communications. An authentication token is generated for a user account. The authentication token is embedded within a digital content item. The digital content item is sent to a first client device that is registered to the user account. A user is authenticated for access to the user account based at least in part on the user providing the authentication token embedded within the digital content item.

Abstract: Disclosed are various embodiments for detecting homograph attacks using text recognition. A first string of untrusted text is received. A second string is determined corresponding to what the first string of untrusted text appears to be in a particular language. The second string is determined to differ from the first string of untrusted text. One or more actions are implemented in response to determining that the second string differs from the first string of untrusted text.

Abstract: An engine head assembly includes a plurality of fuel injectors each positioned within a fuel injector bore in the engine head, and each being fluidly coupled with a fluid conduit. Each fuel injector includes a valve assembly positioned within a fuel injector case that includes an elongate body having an opening. A filter sleeve having a particle-blocking perforation array structured to block particles is press fit on the fuel injector case to form a fluid flow path from the fluid conduit into the fuel injector case.

Abstract: A server may assign a temporary phone number and an extension number to a shipment. The temporary phone number may be based on a geographic location of where the shipment is to be delivered. The extension number is associated with the shipment. The temporary phone number and extension number may be included on a shipping label rather than the user's phone number. During the delivery of the shipment, a delivery person may encounter a delivery issue, such as needing directions. The delivery person may call the temporary phone number and extension number and be connected to a user device. The delivery person may communicate the delivery issue, such as asking for directions to the user's residence. Upon delivery of the shipment, the server disassociates the temporary phone number and the extension number from the shipment.

Abstract: A security and maturity service is provided to generate a security score for an application. A set of data points are obtained, the data points indicating application information for an application. The data points may be associated with a particular axis of a plurality of axes defined by a scoring model. Furthermore, the scoring model may define a score for each axes based at least in part on the data points. A security score for the application may then be determined based at least in part on the score for the plurality of axes.

Abstract: A browser or browser component queues touch events on a user device while an associated network page is being rendered. The browser may store a detected touch event, a location of the touch event, and/or a vector associated with the touch event in a touch events queue implemented by a data repository. The browser may also visually indicate that the touch event has been registered. Once the network page is at least partially interactive, the browser may retrieve the touch event information from the touch events queue and apply the touch event. Prior to or after applying the touch event, the visual indicator that alerts the user that the touch event was registered may be removed. The browser may then re-render and display the network page after the touch event has been applied.

Abstract: A system sends a request for access to a resource and receives a digital certificate in response to the request. The system simultaneously causes one or more computing devices located in different geographical locations to send a plurality of requests to also access the resource. In response to the plurality of requests, digital certificates are received. The digital certificate is then compared to the plurality of digital certificates received from the plurality of requests sent by the computing devices in different geographical locations. The result of the comparison indicates whether the digital certificate is trustworthy.

Abstract: A pump includes a pump body having an admission valve movable therein to alternately block and unblock a valve seat to connect a low pressure space to a pumping chamber. A control valve is positioned fluidly between a control chamber and the low pressure space, and moves between a closed position where the control chamber receives high pressure for hydraulically actuating the admission valve, and an open position where the control chamber is connected to the low pressure space to enable closing of the admission valve. The pilot actuation of the admission valve produces a greater travel distance and efficiency than what might be available with certain other actuating mechanisms.

Abstract: An engine head assembly includes a plurality of fuel injectors each positioned within a fuel injector bore in the engine head, and each being fluidly coupled with a fluid conduit. Each fuel injector includes a valve assembly positioned within a fuel injector case that includes an elongate body having an opening. A filter sleeve having a particle-blocking perforation array structured to block particles is press fit on the fuel injector case to form a fluid flow path from the fluid conduit into the fuel injector case.

Abstract: An engine head assembly includes a plurality of fuel injectors each positioned within a fuel injector bore in an engine head, and fluidly coupled with a fluid conduit. Each fuel injector includes a valve assembly within a fuel injector case such that an interior fluid space is formed between the fuel injector case and the valve assembly. The fuel injector case includes an elongate body having a particulate-blocking perforation array formed therein, and that is structured to block particulates in fuel entering the fuel injector from the fluid conduit.

Abstract: An engine head assembly includes a plurality of fuel injectors each positioned within a fuel injector bore in an engine head, and fluidly coupled with a fluid conduit. Each fuel injector includes a valve assembly within a fuel injector case such that an interior fluid space is formed between the fuel injector case and the valve assembly. The fuel injector case includes an elongate body having a particulate-blocking perforation array formed therein, and that is structured to block particulates in fuel entering the fuel injector from the fluid conduit.

Abstract: Features are disclosed for enabling users to discover content with different opinions or sentiments regarding particular topics. In some embodiments, users may request content expressing an opinion regarding a topic that is contrary or otherwise different than the opinion expressed in a currently viewed or selected content item. A service or system can identify content items related to the same topic, analyze sentiments expressed regarding the topic, and provide the user with a listing or other data regarding content with differing opinions. In some embodiments, the service or system may proactively search for and classify content as expressing particular opinions about particular topics in the absence of a request from a user. In some embodiments, the service or system may proactively provide users with data regarding the availability of content items with contrary opinions.

Abstract: Techniques and solutions are described for throttling automated polling requests. For example, an automated polling request that is generated by a web page can be received and a decision can be made to throttle, or not throttle, the automated polling request. The decision can be made based on comparison of the automated polling request with previous automated polling requests (e.g., during a throttling time period). For example, repetitive automated polling requests that occur during a throttling time period can be throttled.

Abstract: A hydraulic actuator for a cryogenic pump is provided. The hydraulic actuator includes a piston. The hydraulic actuator also includes a base housing. The hydraulic actuator further includes a push rod assembly. The push rod assembly includes a tube guide. The push rod assembly also includes a push rod. The push rod is adapted to reciprocate within the tube guide. The hydraulic actuator also includes a sealing assembly having a hollow cylindrical configuration. The sealing assembly includes a first static seal portion. The first static seal portion being connected to the base housing. The sealing assembly also includes a second static seal portion. The second static seal portion is connected to the push rod. The sealing assembly further includes an expandable annular bellow extending between the first and second static seal portions. The sealing assembly is adapted to prevent flow of a first fluid in a first direction.

Abstract: A fuel injector is disclosed for use in an engine system. The fuel injector may have a body defining a gas inlet, an oil inlet, and an oil outlet. The fuel injector may also have a nozzle connected to the body and having a base end in fluid communication with the gas inlet, and an injection tip located opposite the base end. The fuel injector may also have a valve check disposed in the nozzle and movable to selectively block and unblock the injection tip of the nozzle, and a plunger disposed in the body between the oil inlet and the oil outlet. The plunger may be movable between a flow-passing position and a flow-blocking position to cause movement of the valve check through the injection tip. The injector may further have a solenoid actuator configured to selectively move the plunger.

Abstract: Features are disclosed for enabling users to efficiently store and share browsing sessions or portions thereof with other users or the general public. Browsing session requests and other activities may be sent to an intermediary system, which can retrieve requested content and store a representation of the requested content or data regarding the requested content. The stored data may be organized as a saved browsing session such that users may access the shared browsing session at a subsequent time and view the browsing session substantially in its entirety. Users may search for shared browsing sessions and access data regarding the requests made during a browsing session. In addition, data regarding client devices used during shared browsing sessions may be tracked and associated with the shared browsing sessions such that subsequent users can search for shared browsing sessions based partly on such device characteristics.

Abstract: A computing resource service provider may provide developers with access to a build service configured to generate compilation artifacts associated with software development projects. The build service may obtain a build description and source code suitable for generating the compilation artifact. The build service may then cause one or more build resources to be provisioned and included in a build instantiation using computing resources of the service provider. The build instantiation may generate the compilation artifact, using the one or more build resources, based at least in part on the obtained source code. The developer may then be provided with access to the compilation artifact generated by the build instantiation.

Abstract: A fuel injector is disclosed for use in an engine system. The fuel injector may have a body defining a gas inlet, an oil inlet, and an oil outlet. The fuel injector may also have a nozzle connected to the body and having a base end in fluid communication with the gas inlet, and an injection tip located opposite the base end. The fuel injector may also have a valve check disposed in the nozzle and movable to selectively block and unblock the injection tip of the nozzle, and a plunger disposed in the body between the oil inlet and the oil outlet. The plunger may be movable between a flow-passing position and a flow-blocking position to cause movement of the valve check through the injection tip. The injector may further have a solenoid actuator configured to selectively move the plunger.