LED Driver and Lighting Systems Technologies

A driver for a lighting device includes a light emitting diode (LED) driver circuit utilizing interface elements for supporting multiple control connectivity options, the LED driver circuit utilizing a processor having a physical layer interfaces coupled to the interface elements and configured to operatively support a plurality of network protocols, the processor being configured to perform a plurality of functions, including a function of providing a bridge or gateway between network protocols of the plurality of network protocols, the processor being configured to: detect available network protocols of the plurality of network protocols; select, for a physical layer interface, a mode of operation (from modes of operation including, for example: an inactive mode, a monitoring mode, a gateway mode, and a primary mode) appropriate to ensure interoperability and backward compatibility for the available network protocols; and assign one or more of the available network protocols to the physical layer interface(s).

Systems and Methods for Interpreting Multi-Phase Fluid Flow Data

Methods and systems are disclosed for interpreting multi-phase fluid flow in a conduit, such as a pipe in a wellbore. The method involves curve fitting holdup data sets and velocity data sets together wherein the second curve comprises a shape mutual to the first curve with an independent gain and an independent offset, and determining flow rates through the pipe.

Methods and Systems for Interpreting Multiphase Fluid Flow in A Conduit

Systems and methods are disclosed for interpreting measurements by a meter of defined dimension in a multiphase flow in a conduit in a wellbore. The meter may be a spinner used to obtain measurements at locations in the flow. The measurements may be averaged across a defined dimension, and a measurement model generated. A parameter profile (e.g., velocity) can be generated by curve fitting to the model. 1. A method for interpreting measurements by a meter of defined dimension in a multiphase flow in a conduit in a wellbore , comprising:obtaining a measurement with the meter at each of a plurality of locations in the multiphase flow, each measurement representing an average of a flow parameter across a defined dimension of the meter;generating a measurement model as a function of the defined dimension of the meter and the average of the flow parameter; andgenerating a parameter profile of the flow parameter by fitting a curve to the measurement model.2. The method of claim 1 , wherein the average of the flow parameter across the defined dimension of the meter comprises an average of the measurements over a cross-sectional area of the meter.3. The method of claim 1 , wherein the average of the flow parameter across the defined dimension of the meter comprises an average of the measurements over a volume of the meter.4. The method of claim 1 , wherein the average of the flow parameter across the defined dimension of the meter comprises a mass weighted average of the measurements over a volume of the meter.5. The method of claim 1 , wherein the defined dimension of the meter excludes a dead portion of the meter through which fluid does not flow.6. The method of claim 1 , wherein the parameter profile comprises one of a velocity profile and a holdup profile.7. The method of claim 1 , further comprising iteratively adjusting the measurement model to align with the measurements.8. The method of claim 1 , wherein the parameter profile comprises a velocity profile; the ...

Dynamically allocating network addresses

Disclosed are various embodiments for dynamically allocating network addresses to devices based on demand. A first network address allocation is initially assigned to a subdivision of a network including multiple computing devices. A router for the subdivision is configured to implement the first network address allocation. Data indicating a reconfiguration of the computing devices is obtained. A second network address allocation is subsequently assigned to the subdivision of the network based at least in part on the reconfiguration of the computing devices. The router for the subdivision is reconfigured to implement the second network address allocation.

Led driver and lighting system technologies

A driver for a lighting device includes a light emitting diode (LED) driver circuit utilizing interface elements for supporting multiple control connectivity options, the LED driver circuit utilizing a processor having a physical layer interfaces coupled to the interface elements and configured to operatively support a plurality of network protocols, the processor being configured to perform a plurality of functions, including a function of providing a bridge or gateway between network protocols of the plurality of network protocols, the processor being configured to: detect available network protocols of the plurality of network protocols; select, for a physical layer interface, a mode of operation (from modes of operation including, for example: an inactive mode, a monitoring mode, a gateway mode, and a primary mode) appropriate to ensure interoperability and backward compatibility for the available network protocols; and assign one or more of the available network protocols to the physical layer interface(s).

Led driver and lighting system technologies

A driver for a lighting device includes a light emitting diode (LED) driver circuit utilizing interface elements for supporting multiple control connectivity options, the LED driver circuit utilizing a processor having a physical layer interfaces coupled to the interface elements and configured to operatively support a plurality of network protocols, the processor being configured to perform a plurality of functions, including a function of providing a bridge or gateway between network protocols of the plurality of network protocols, the processor being configured to: detect available network protocols of the plurality of network protocols; select, for a physical layer interface, a mode of operation (from modes of operation including, for example: an inactive mode, a monitoring mode, a gateway mode, and a primary mode) appropriate to ensure interoperability and backward compatibility for the available network protocols; and assign one or more of the available network protocols to the physical layer interface(s).

Led driver and lighting systems technologies

A driver for a lighting device includes a light emitting diode (LED) driver circuit utilizing interface elements for supporting multiple control connectivity options, the LED driver circuit utilizing a processor having a physical layer interfaces coupled to the interface elements and configured to operatively support a plurality of network protocols, the processor being configured to perform a plurality of functions, including a function of providing a bridge or gateway between network protocols of the plurality of network protocols, the processor being configured to: detect available network protocols of the plurality of network protocols; select, for a physical layer interface, a mode of operation (from modes of operation including, for example: an inactive mode, a monitoring mode, a gateway mode, and a primary mode) appropriate to ensure interoperability and backward compatibility for the available network protocols; and assign one or more of the available network protocols to the physical layer interface(s).

Zonal Compositional Production Rates in Commingled Gas Wells

A production logging tool (PLT) is conveyed within production tubing containing production fluid flow established by zonal fluid flow from formation zones. The PLT measures a flow rate of the production fluid flow at each of a plurality of depths associated with a corresponding one of the zones. A flow rate of the zonal fluid flow from each zone is determined based on the flow rates of the production fluid flow measured at each of the depths. The PLT measures proportions of compositional components of the production fluid flow at each of the depths. A flow rate of each compositional component of the zonal fluid flow from each zone is determined based on the determined flow rate of the zonal fluid flow from each zone and the proportions of compositional components of the production fluid flow measured at each of the depths.

LED driver and lighting system technologies

A driver for a lighting device includes a light emitting diode (LED) driver circuit utilizing interface elements for supporting multiple control connectivity options, the LED driver circuit utilizing a processor having a physical layer interfaces coupled to the interface elements and configured to operatively support a plurality of network protocols, the processor being configured to perform a plurality of functions, including a function of providing a bridge or gateway between network protocols of the plurality of network protocols, the processor being configured to: detect available network protocols of the plurality of network protocols; select, for a physical layer interface, a mode of operation (from modes of operation including, for example: an inactive mode, a monitoring mode, a gateway mode, and a primary mode) appropriate to ensure interoperability and backward compatibility for the available network protocols; and assign one or more of the available network protocols to the physical layer interface(s). 110-. (canceled)11. A light emitting diode (LED) driver with advanced diagnostic and reporting capabilities , comprising:a light emitting diode (LED) driver circuit including a processor configured to integrate driver functions and management control functions and monitor a plurality of operational characteristics.12. The light emitting diode (LED) driver of claim 11 , wherein said plurality of operational characteristics comprises a group of operational characteristics including: energy consumption claim 11 , voltage and current conditions claim 11 , drive characteristics claim 11 , and environmental conditions.13. The light emitting diode (LED) driver of claim 11 , wherein said driver circuit further comprises an energy monitor circuit.14. The light emitting diode (LED) driver of claim 13 , wherein said processor and said energy monitor are configured to cooperatively provide power management.15. The light emitting diode (LED) driver of claim 11 , wherein ...

Systems and methods for interpreting multi-phase fluid flow data

Methods and systems are disclosed for interpreting multi-phase fluid flow in a conduit, such as a pipe in a wellbore. The method involves curve fitting holdup data sets and velocity data sets together wherein the second curve comprises a shape mutual to the first curve with an independent gain and an independent offset, and determining flow rates through the pipe.

CONNECTION FOLLOWING DURING NETWORK RECONFIGURATION

An allocated IP address is remapped from a first virtual machine to a second virtual machine while maintaining existing client connections on the first virtual machine. A communication channel is established between the first and second virtual machines, and existing connections associated with the IP address are tracked. Packets addressed to the IP address are forwarded to the second virtual machine instead of the first machine. If the second virtual machine receives a packet that contains a new connection request, the new connection is established with the second virtual machine. However, if the second virtual machine receives a packet that is associated with an existing connection to the first virtual machine, then the packet is forwarded to the first virtual machine via the communication channel. 1establish a first connection to an IP address on a first network using a first IP address corresponding to a first virtual machine instance;receive a request to remap the IP address on the first network to an IP address corresponding to a second virtual machine instance;in response to receiving the request to remap the IP address on the first network, establish a tunnel between the first and second virtual machine instances;track existing connections to the IP address on the first network;in response to receiving a packet from the first network containing a request to initiate a second connection to the IP address on the first network, establish the second connection using the second virtual machine instance and translate subsequent packets associated with the IP address on the first network to the IP address corresponding to the second virtual machine instance; andbased at least in part of said tracking, forward, via the tunnel, subsequent packets associated with the first connection to the first virtual machine instance.. A system for providing reconfigurable access to computing resources, the system comprising a processor and memory, the system configured to: This ...

Logging perforation flow in wellbore

A measurement apparatus for non-invasively logging the flow of perforations in a well casing lining a wellbore. The measurement apparatus includes a plurality of transducers arranged adjacent an outer surface of the measurement apparatus and at predefined azimuthal angular positions with respect to a longitudinal axis of the measurement apparatus, where the transducers are adapted to transmit and detect an acoustic pulse, and where each transducer is arranged at a different azimuthal angle with respect to each of the remaining transducers.

SYSTEMS AND METHODS TO EVALUATE CLIENT DEVICE TRUST IN A DISTRIBUTED COMPUTING SYSTEM

A method includes receiving, by a processing device of a content sharing platform, a request for desired content from a client device, the content being stored in a content delivery network (CDN). The method further includes generating, based on data available to the content sharing platform, a partial trust metric associated with the client device, wherein the partial trust metric is to be used by a CDN server to make a decision regarding access to the desired content by the client device. The method further includes generating a response to the content request, wherein the response comprises one or more resource locators for accessing the desired content in the CDN, and the partial trust metric. The method further includes sending the response to the client device to enable the client device to request the desired content from the CDN server using the resource locator(s) and the partial trust metric. 1. A method , comprising:receiving, by a processing device of a content sharing platform, a request for desired content from a client device, the content being stored in a content delivery network (CDN);generating, based on data available to the content sharing platform, a partial trust metric associated with the client device, wherein the partial trust metric is to be used by a CDN server to make a decision regarding access to the desired content by the client device;generating a response to the content request, wherein the response comprises one or more resource locators for accessing the desired content in the CDN, and the partial trust metric; andsending the response to the client device to enable the client device to request the desired content from the CDN server using the one or more resource locators and the partial trust metric.2. The method of claim 1 , wherein the data available to the content sharing platform comprises one or more of a plurality of characteristics comprising a watch history of a user associated with the client device claim 1 , whether the ...

SYSTEMS AND METHODS TO DELIVER CONTENT DURING CLIENT AUTHENTICATION PROCESS IN A DISTRIBUTED COMPUTING SYSTEM

A method includes receiving, by a content sharing platform, a request for content from a client device, the request for content comprising a session-based authentication token that pertains to a session between the client device and the content sharing platform. The content sharing platform can further validate the session-based authentication token and cause playback of the requested content to begin at the client device. Responsive to a valid content-based authentication token supplied by the client device, the content sharing platform can cause playback of the requested content to continue at the client device, wherein the valid content-based authentication token is based on an identifier of the requested content. 1. A method , comprising:receiving, by a content sharing platform, a request for content from a client device, the request for content comprising a session-based authentication token that pertains to a session between the client device and the content sharing platform;validating the session-based authentication token;causing playback of the requested content to begin at the client device; andresponsive to a valid content-based authentication token supplied by the client device, causing playback of the requested content to continue at the client device, wherein the valid content-based authentication token is based on an identifier of the requested content.2. The method of claim 1 , wherein causing playback of the requested content to begin at the client device comprises:upon validating the session-based authentication token, associating the request for content with a playback event identifier of a playback event; andgenerating a response associated with the playback event identifier, the response comprising one or more resource locators to obtain the requested content, and a parameter authorizing playback of an initial portion of the requested content and indicating that the valid content-based authentication token is required for playback of an ...

MANAGING CONFIGURATION UPDATES

Approaches are described for managing configuration information updates, or other information in a data center, shared resource environment, or other such electronic environment. A management component is provided that can manage distribution of configuration information, operating system (OS) images, authentication data, or other such information for host machines, servers, or other such devices in a network environment. The management component can further perform a number of actions when deploying configuration information updates, such as performing one or more checks to verify the health of a target switch, deactivating the target switch, shifting traffic to and from the target switch, updating a current configuration of the target switch, verifying the target switch's health after the configuration changes, bringing the target switch back in service, among others.

Network capacity planning

Systems, methods and interfaces are provided for the modeling of network data capacity for a network corresponding to a set of nodes interconnected via point-to-point network paths. A network capacity processing system obtains demand estimates for the nodes and network paths of the network. The network capacity processing system then identifies a set of failure scenarios for the network nodes and network paths. The network capacity processing system then generates of a set of processing results corresponding to load estimates for the network paths of the network and based on applying the set of failure scenarios to the model of network data capacity. Utilizing data capacity models, failure scenarios and set of processing results, the network capacity processing system can provide for network capacity planning or contingency planning.

DYNAMICALLY ALLOCATING NETWORK ADDRESSES

Disclosed are various embodiments for dynamically allocating network addresses to devices based on demand. A first network address allocation is initially assigned to a subdivision of a network including multiple computing devices. A router for the subdivision is configured to implement the first network address allocation. Data indicating a reconfiguration of the computing devices is obtained. A second network address allocation is subsequently assigned to the subdivision of the network based at least in part on the reconfiguration of the computing devices. The router for the subdivision is reconfigured to implement the second network address allocation. 1. A non-transitory computer-readable medium embodying a program executable in at least one computing device , comprising:code that initially assigns a first network address allocation to a subdivision of a network including a plurality of computing devices based at least in part on a respective computing device type for each of the computing devices;code that configures a router for the subdivision to implement the first network address allocation;code that obtain data indicating a reconfiguration of the computing devices to host an increased quantity of machine instances;code that subsequently assigns a second network address allocation to the subdivision of the network based at least in part on the reconfiguration of the computing devices;code that reconfigures the router for the subdivision to implement the second network address allocation;code that obtains data indicating a subsequent reconfiguration of the computing devices included in the subdivision to host a reduced quantity of machine instances;code that releases a third network address allocation assigned to the subdivision based at least in part on the subsequent reconfiguration of the computing devices; andcode that reconfigures the router for the subdivision to exclude advertising of the third network address allocation.2. The non-transitory computer ...

NETWORK TOPOLOGY ASSISTED DEVICE PROVISIONING

Systems and methods for managing configuration of network devices are provided. In one embodiment, a network device management service can obtain relevant device-specific information, deployment information, and network topology data associated with a network device to be provisioned. The network device management service can enable generating, identifying or obtaining configuration metadata based on relevant network topology data as well as other applicable information. The network device management service can further generate configuration instructions to facilitate configuration of network devices based on configuration metadata. 1. (canceled)2. A system for facilitating network device configuration comprising: retrieve, from the memory component, network topology data relating to the device-specific information to determine deployment information of the network device within a network topology; and', 'generate configuration metadata that facilitates configuration of the network device based, at least in part, on the network topology data., 'a memory component for storing network topology data, and a network device management component in communication with the memory component and operable to3. The system of claim 2 , wherein the network device management component is further operable to obtain information indicative of a purpose of deployment claim 2 , wherein the configuration metadata is generated based on the information indicative of the purpose of deployment.4. The system of claim 2 , wherein the device-specific information includes information associated with a performance benchmark of the network device.5. The system of claim 4 , wherein the performance benchmark of the network device is based on at least one of processor performance claim 4 , energy usage claim 4 , bus speed claim 4 , throughput claim 4 , seek time claim 4 , network bandwidth claim 4 , or latency.6. The system of claim 2 , wherein the network topology data includes data associated with ...

DYNAMIC NETWORK DEVICE CONFIGURATION

A dynamic configuration system can manage and configure switches or other network devices that come online in a network. When the dynamic configuration system determines that a network device has come online, the dynamic configuration system can identify the network device (e.g., based on its network location, neighbors, fingerprint, identifier, address or the like), select the appropriate configuration data for the network based on the desired network topology, and transmit the configuration data to the network device. The network device can then load the configuration data and function as a component of the desired network topology. 1. A system for dynamically configuring network devices on a communication network , the system comprising:a plurality of network devices, wherein at least one network device in the plurality of network devices is missing at least some configuration data for operating on the communication network; and receive a request for configuration data from a first network device in the plurality of network devices and from a second network device in the plurality of network devices;', 'obtain identification data for a third network device in the plurality of network devices coupled to the first network device and the second network device;', 'determine a first network device identity and a second network device identity in network topology data of the plurality of network devices that are associated with a network device in the plurality of network devices with identification data that matches the identification data for the third network device;', 'select first network configuration data for the first network device based at least partly on the first network device identity and second network configuration data for the second network device based at least partly on the second network device identity; and', 'transmit the first network configuration data to the first network device and the second network configuration data to the second network ...

Distributed network address translation

Systems and methods are disclosed that facilitate the management of network address information utilized by hosted computing devices. Each host computing device includes a local network and port address management component that is configured with port address translation information for the specific host computing device. Additionally, one or more edge computing devices also include a local network and port address management component that is configured with network and port address translation information. The network and port address translation information facilitates the correlation of internal network address information associated with a virtual machine instance with a tuple of an externally accessible network address and port address information. The local network and port address translation management components utilize the network and port address translation information to translate communication requests to and from the virtual machine instances without requiring a centralized network and port address translation component.

Dynamically allocating network addresses

Disclosed are various embodiments for dynamically allocating network addresses to devices based on demand. A first network address allocation is initially assigned to a subdivision of a network including multiple computing devices. A router for the subdivision is configured to implement the first network address allocation. Data indicating a reconfiguration of the computing devices is obtained. A second network address allocation is subsequently assigned to the subdivision of the network based at least in part on the reconfiguration of the computing devices. The router for the subdivision is reconfigured to implement the second network address allocation.

Fluid diversion measurement methods and systems

FLUID DIVERSION MEASUREMENT SYSTEMS AND METHODS ARE DESCRIBED. ONE SYSTEM INCLUDES A SECTION OF TUBULAR HAVING A MAIN FLOW PASSAGE (19) AND A FLUID DIVERSION PORT (23), THE SECTION OF TUBULAR ADAPTED TO BE EITHER MOVING OR STATIONARY DURING A FLUID DIVERSION OPERATION, AT LEAST TWO SENSORS (64, 66) IN THE SECTION OF TUBULAR, AT LEAST ONE SENSOR LOCATED UPSTREAM OF THE FLUID DIVERSION PORT AND AT LEAST ONE SENSOR LOCATED DOWNSTREAM OF THE FLUID DIVERSION PORT, EACH SENSOR ADAPTED TO MEASURE A PARAMETER OF A FLUID DIVERTED INTO A WELLBORE THROUGH THE FLUID DIVERSION PORT; AND MEANS FOR USING THE MEASURED PARAMETERS IN REALTIME TO MONITOR, CONTROL, OR BOTH MONITOR AND CONTROL DIVERSION OF THE FLUID. (FIG. 8)

mowing machine

Fluid diversion measurement methods and systems

Fluid diversion measurement systems and methods are described. One system includes a section of tubular having a main flow passage (19) and a fluid diversion port (23), the section of tubular adapted to be either moving or stationary during a fluid diversion operation, at least two sensors (64, 66) in the section of tubular, at least one sensor located upstream of the fluid diversion port and at least one sensor located downstream of the fluid diversion port, each sensor adapted to measure a parameter of a fluid diverted into a wellbore through the fluid diversion port; and means for using the measured parameters in realtime to monitor, control, or both monitor and control diversion of the fluid.

One-to-many stateless load balancing

A stateless load balancer may route a request to a computing device without tracking state information of the communication connection that delivered the request. The stateless load balancer may receive a request that is initiated by a client device. The request may be transported to the stateless load balancer via a communication connection that includes a public destination internet protocol (IP) address. One of the routing devices in the stateless load balancer may obtain connection tuples of the communication connection that transported the request, in which the connection tuples include the public destination IP address. Once obtained, the routing device may generate a hash value from one or more connection tuples. Subsequently, the routing device may map the hash value to a target network address of a particular computing device in a cluster of multiple computing devices by accessing stored mapping data, and then route the request to the particular computing device for processing.

Dynamically allocating network addresses

Disclosed are various embodiments for dynamically allocating network addresses to devices based on demand. A first network address allocation is initially assigned to a subdivision of a network including multiple computing devices. A router for the subdivision is configured to implement the first network address allocation. Data indicating a reconfiguration of the computing devices is obtained. A second network address allocation is subsequently assigned to the subdivision of the network based at least in part on the reconfiguration of the computing devices. The router for the subdivision is reconfigured to implement the second network address allocation.

Lawnmower

mowing machine

Lawnmower

Separating authorization of content access and content delivery using multiple cryptographic digital signatures

【課題】コンテンツアクセスおよびコンテンツ配信の認可を分けるために複数の暗号学的デジタル署名を使用することに関する。【解決手段】クライアントデバイスからのコンテンツの第1の要求が、受信される。第1の要求は、クライアントデバイスが要求されたコンテンツを取得することを認可するために認可データサービスによって提供されたリソースロケータを含む。リソースロケータは、クライアントデバイスが要求されたコンテンツにアクセスする認可に関連する第1のデジタル署名と、クライアントデバイスによるアクセスのための要求されたコンテンツの配信の認可に関連する第2のデジタル署名とを含む。クライアントデバイスへの要求されたコンテンツの配信の変更を示すイベントの発生が、特定される。要求されたコンテンツの変更された配信に関連する第3のデジタル署名が、生成される。第1のデジタル署名および第3のデジタル署名を含む新しいリソースロケータが、クライアントデバイスに提供される。【選択図】図4A

Methods and systems for interpreting multiphase fluid flow in a conduit

Systems and methods are disclosed for interpreting measurements by a meter of defined dimension in a multiphase flow in a conduit in a wellbore. The meter may be a spinner used to obtain measurements at locations in the flow. The measurements may be averaged across a defined dimension, and a measurement model generated. A parameter profile (e.g., velocity) can be generated by curve fitting to the model.

Systems and methods for interpreting multi-phase fluid flow data

Methods and systems are disclosed for interpreting multi-phase fluid flow in a conduit, such as a pipe in a wellbore. The method involves curve fitting holdup data sets and velocity data sets together wherein the second curve comprises a shape mutual to the first curve with an independent gain and an independent offset, and determining flow rates through the pipe.

Systems and methods for interpreting multi-phase fluid flow data

Methods and systems are disclosed for interpreting multi-phase fluid flow in a conduit, such as a pipe in a wellbore. The method involves curve fitting holdup data sets and velocity data sets together wherein the second curve comprises a shape mutual to the first curve with an independent gain and an independent offset, and determining flow rates through the pipe.

Virtualized hardware clocks for providing highly accurate time information in hosted machine instances

Systems and methods are provided for highly accurate synchronization of machine instances in a distributed, hosted computing environment to a reference timekeeper. In addition to a general communication network accessible to machine instances, the distributed environment includes a second network dedicated to carrying time information, such as a pulse-per-second (PPS) signal to isolated timing hardware within host computing devices. The isolated timing hardware can use the PPS signal, along with a reference time, to set a hardware clock. The isolated timing hardware can further provide an interface to machine instances that enables the instances to read the time of the hardware clock. This configuration enables many instances can share access to a single reference timekeeper, thus synchronizing those instances to a much higher accuracy than in traditional network-based time protocols.

Managing configuration updates

Approaches are described for managing configuration information updates, or other information in a data center, shared resource environment, or other such electronic environment. A management component is provided that can manage distribution of configuration information, operating system (OS) images, authentication data, or other such information for host machines, servers, or other such devices in a network environment. The management component can further perform a number of actions when deploying configuration information updates, such as performing one or more checks to verify the health of a target switch, deactivating the target switch, shifting traffic to and from the target switch, updating a current configuration of the target switch, verifying the target switch's health after the configuration changes, bringing the target switch back in service, among others.

Associating unclaimed communications nodes

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for associating unclaimed communications nodes. In some implementations, a method includes receiving broadcast information transmitted by a transmitting device including (i) identifying information of a transmitting device and (ii) an address not associated with any device in a transmitting vicinity of the transmitting device; transmitting a password request to the transmitting device in response to receiving the broadcast information; obtaining password information that includes hashed data generated by a hash algorithm; generating a hash result by applying the hash algorithm to an identifier of the transmitting device; comparing the hashed data received from the transmitting device to the hash result generated by the controller; and updating a set of registered network devices based on comparing the hashed data with the hash result.

Separating the authorization of content access and content delivery using multiple cryptographic digital signatures

A first request for content from a client device is received. The first request includes a resource locator provided by an authorizing data service to authorize the client device to obtain the requested content. The resource locator includes a first digital signature associated with authorization of the client device to access the requested content, and a second digital signature associated with authorization of delivery of the requested content for access by the client device. An occurrence of an event is identified that indicates a change in the delivery of the requested content to the client device. A third digital signature associated with a changed delivery of the requested content is generated. A new resource locator is provided to the client device that includes the first digital signature and the third digital signature.

Separating the authorization of content access and content delivery using multiple cryptographic digital signatures

A first request for content from a client device is received. The first request includes a resource locator provided by an authorizing data service to authorize the client device to obtain the requested content. The resource locator includes a first digital signature associated with authorization of the client device to access the requested content, and a second digital signature associated with authorization of delivery of the requested content for access by the client device. An occurrence of an event is identified that indicates a change in the delivery of the requested content to the client device. A third digital signature associated with a changed delivery of the requested content is generated. A new resource locator is provided to the client device that includes the first digital signature and the third digital signature.

Separating the authorization of content access and content delivery using multiple cryptographic digital signatures

A first request for content from a client device is received. The first request includes a resource locator provided by an authorizing data service to authorize the client device to obtain the requested content. The resource locator includes a first digital signature associated with authorization of the client device to access the requested content, and a second digital signature associated with authorization of delivery of the requested content for access by the client device. An occurrence of an event is identified that indicates a change in the delivery of the requested content to the client device. A third digital signature associated with a changed delivery of the requested content is generated. A new resource locator is provided to the client device that includes the first digital signature and the third digital signature.

Associating unclaimed communications nodes

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for associating unclaimed communications nodes. In some implementations, a method includes generating, by a transmitting device, broadcast information including (i) identifying information of the transmitting device and (ii) an invalid address that does not represent a device configured to communicate with a given controller; and transmitting, by the transmitting device, the broadcast information within a receiving vicinity of the given controller that is configured to (i) receive the broadcast information and (ii) designate the transmitting device as available to communicate with one or more other transmitting devices using the identifying information of the transmitting device.

Configuring of a shared memory buffer in a network device

An optimization agent optimizes configuration parameters of a shared memory buffer for ports of a network device (e.g., router). The optimization agent located on the network device (or remotely) takes an input state from the network device's switching logic, such as the packets transmitted or dropped per port, and determines port buffer settings to optimize the settings to achieve a goal. The buffer settings can include minimum and maximum buffer limits per port and the goal can be to maximize port utilization or minimize port loss. The optimization agent can then take an action by applying the buffer configurations to the switching logic and repeat the process iteratively until the goal is reached.

Separating the authorization of content access and content delivery using multiple cryptographic digital signatures

A first request for content from a client device is received. The first request includes a resource locator provided by an authorizing data service to authorize the client device to obtain the requested content. The resource locator includes a first digital signature associated with authorization of the client device to access the requested content, and a second digital signature associated with authorization of delivery of the requested content for access by the client device. An occurrence of an event is identified that indicates a change in the delivery of the requested content to the client device. A third digital signature associated with a changed delivery of the requested content is generated. A new resource locator is provided to the client device that includes the first digital signature and the third digital signature.

Systems and methods to evaluate client device trust in a distributed computing system

A method includes receiving, by a processing device of a content sharing platform, a request for desired content from a client device, the content being stored in a content delivery network (CDN). The method further includes generating, based on data available to the content sharing platform, a partial trust metric associated with the client device, wherein the partial trust metric is to be used by a CDN server to make a decision regarding access to the desired content by the client device. The method further includes generating a response to the content request, wherein the response comprises one or more resource locators for accessing the desired content in the CDN, and the partial trust metric. The method further includes sending the response to the client device to enable the client device to request the desired content from the CDN server using the resource locator(s) and the partial trust metric.

Associating unclaimed communications nodes

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for associating unclaimed communications nodes. In some implementations, a method includes receiving broadcast information transmitted by a transmitting device including (i) identifying information of a transmitting device and (ii) an address not associated with any device in a transmitting vicinity of the transmitting device; transmitting a password request to the transmitting device in response to receiving the broadcast information; obtaining password information that includes hashed data generated by a hash algorithm; generating a hash result by applying the hash algorithm to an identifier of the transmitting device; comparing the hashed data received from the transmitting device to the hash result generated by the controller; and updating a set of registered network devices based on comparing the hashed data with the hash result.

Griffe für Rasenmäher

Ein Griff (6) für einen Rasenmäher, wobei der Griff (6) mindestens einen länglichen Arm (10) und ein Querelement (11) umfasst, das nicht parallel zu jedem länglichen Arm (10) verläuft, wobei der Griff (6) mit einem am Querelement (11) montierten Schalterkasten (7) versehen ist, der einen Schalter (8), einen Kastenkörper (15) und mindestens einen Hebel (13) umfasst, der so angeordnet ist, dass er den Schalter (8) betätigt und von einem Benutzer gehandhabt werden kann, wobei jeder Hebel (13) so am Schalterkastenkörper (15) montiert ist, dass er um eine parallel zum Querelement (11) verlaufende Achse (14) schwenkt.

Associating unclaimed communications nodes in mesh networks

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for associating unclaimed communications nodes. In some implementations, a method includes generating, by a transmitting device, broadcast information including (i) identifying information of the transmitting device and (ii) an invalid address that does not represent a device configured to communicate with a given controller; and transmitting, by the transmitting device, the broadcast information within a receiving vicinity of the given controller that is configured to (i) receive the broadcast information and (ii) designate the transmitting device as available to communicate with one or more other transmitting devices using the identifying information of the transmitting device.

Systems and methods to deliver content during client authentication process in a distributed computing system

A method includes receiving, by a content distribution network server, a first request for content, the first request for content comprising an identifier of a location of the content. Playback of the requested content is caused to begin at a client device. A content-based authentication token generated by the client device is received, wherein the content-based authentication token is associated with a second request for content that is initiated by the client device, and the content-based authentication token is sent for verification by a content sharing platform. Responsive to receiving an indication that the content-based authentication token is valid, playback of the requested content is caused to continue at the client device.

Systems and methods to deliver content during client authentication process in a distributed computing system

A method includes receiving, by a content sharing platform, a request for content from a client device, the request for content comprising a session-based authentication token that pertains to a session between the client device and the content sharing platform. The content sharing platform can further validate the session-based authentication token and cause playback of the requested content to begin at the client device. Responsive to a valid content-based authentication token supplied by the client device, the content sharing platform can cause playback of the requested content to continue at the client device, wherein the valid content-based authentication token is based on an identifier of the requested content.

Systems and methods to deliver content during client authentication process in a distributed computing system

A method includes receiving, by a content sharing platform, a request for content from a client device, the request for content comprising a session-based authentication token that pertains to a session between the client device and the content sharing platform. The content sharing platform can further validate the session-based authentication token and cause playback of the requested content to begin at the client device. Responsive to a valid content-based authentication token supplied by the client device, the content sharing platform can cause playback of the requested content to continue at the client device, wherein the valid content-based authentication token is based on an identifier of the requested content.

Contamination prevention system for fiber optic cabling

A plug may be coupled with a cable and include a fiber ferrule extending from the plug. A biasing mechanism may be arranged to bias a cover toward a covered configuration in which the fiber ferrule is situated within an internal volume defined by the cover and away from an uncovered configuration in which the fiber ferrule is situated at least partially outside of the internal volume defined by the cover. Bristles or other blockers may be positioned along or within a boundary of the internal volume of the cover, may be arranged to block particulate entry through the blockers into the internal volume of the cover in the covered configuration, and may be movable to permit passage of the fiber ferrule through the blockers in response to movement of the cover between the covered configuration and uncovered configuration.

Managing configuration updates

Approaches are described for managing configuration information updates, or other information in a data center, shared resource environment, or other such electronic environment. A management component is provided that can manage distribution of configuration information, operating system (OS) images, authentication data, or other such information for host machines, servers, or other such devices in a network environment. The management component can further perform a number of actions when deploying configuration information updates, such as performing one or more checks to verify the health of a target switch, deactivating the target switch, shifting traffic to and from the target switch, updating a current configuration of the target switch, verifying the target switch's health after the configuration changes, bringing the target switch back in service, among others.

Dynamically allocating network addresses

Network addresses are dynamically allocated to devices based on demand. It is determined that a quantity of virtualized machine instances executed on a plurality of computing devices has changed. An updated network address allocation is dynamically assigned to a subdivision of a network in response to the quantity of virtualized machine instances. The subdivision includes the plurality of computing devices. A router for the subdivision is reconfigured to implement the updated network address allocation.

Network topology assisted device provisioning

Systems and methods for managing configuration of network devices are provided. In one embodiment, a network device management service can obtain relevant device-specific information, deployment information, and network topology data associated with a network device to be provisioned. The network device management service can enable generating, identifying or obtaining configuration metadata based on relevant network topology data as well as other applicable information. The network device management service can further generate configuration instructions to facilitate configuration of network devices based on configuration metadata.

Systems and methods for interpreting multi-phase fluid flow data

Methods and systems are disclosed for interpreting multi-phase fluid flow in a conduit, such as a pipe in a wellbore. The method involves curve fitting holdup data sets and velocity data sets together wherein the second curve comprises a shape mutual to the first curve with an independent gain and an independent offset, and determining flow rates through the pipe.