Abstract: A cloud-based platform for zero trust network access (ZTNA) services provides zero trust network access as a service for multiple customers in a multi-tenant architecture. In this context, the configuration for a new ZTNA application is validated with a service proxy in a sandbox or similar environment before release by the cloud-based platform for access through a public network. As a significant advantage, this approach mitigates inadvertent conflicts or instability in a service proxy that supports other applications and customers.

Abstract: A cloud computing platform provides zero trust network access as a service to customers that maintain applications on-premises, and a zero trust network access appliance at the customer premises that couples the on-premises applications to the cloud computing platform. A customer may host multiple instances of the appliance in order to support scalable access, where each instance creates a separate secure tunnel to the cloud computing platform. In this context, when a new appliance authenticates a new secure tunnel, information such as a connector name, customer, and port for the tunnel may be shared on a control plane for the computing platform to facilitate programmatic load balancing within the cloud computing platform.

Abstract: A zero trust network access appliance deployed at a customer premises can support gateway and cloud modes. In a gateway mode, the appliance operates as a zero trust network access gateway, and provides zero trust network access to applications hosted at the customer premises, using a firewall at the customer premises for network security. In the cloud mode, the appliance initiates a secure connection with a remote, cloud computing platform that provides a front end for zero trust network access. A threat management facility for the customer provides a control plane for managing zero trust network access provided through the cloud computing platform.

Abstract: In one or more embodiments, an apparatus includes one or more memories and one or more processors operatively coupled to the one or more memories. The one or more processors is configured to receive a policy bundle associated with at least one tenant from a plurality of tenants, determine a policy change associated with a change between the policy bundle and a tenant policy, the policy change associated with a load value, subscribe an administration client to an administration layer server based on the tenant policy, transmit the policy change to the administration layer client, implement the policy change into an agent associated with the administration layer client, determine a system load status based on a plurality of administration layer clients and the load value, and responsive to determining the system load status exceeds a predetermined threshold, generate at least one agent associated with the at least one tenant.

Abstract: A Transport Layer Security (TLS) handshake can be terminated early—i.e., before certificate validation—to reduce server-side demand, which can be particularly advantageous in counteracting Denial-of-Service (DOS) attacks and the like. To this end, an endpoint may provide a one-time password (OTP) in the client hello message during the initial steps of a TLS handshake or similar connection protocol. A gateway, upon receiving the client hello message, may generate its own OTP for comparison with the OTP in the client hello message. The endpoint and gateway may advantageously generate the OTP based on a secret provided by a threat management facility with a preexisting secure connection to the two entities. If the OTP provided in the client hello message and the OTP generated on the gateway are the same, then the TLS handshake may continue; otherwise, the Transmission Control Protocol (TCP) connection will be terminated by the gateway.

Abstract: In a cluster of network devices using a consensus protocol for cluster synchronization, a full software rollback is performed by backing up a cluster state on a primary instance for the cluster, and then restarting all devices at the same time from a prior partition. The primary instance can then start a cluster management service and other devices can join the cluster using the consensus state stored by the primary instance.

Abstract: A distillation system and process thereof are provided. The system includes an evaporation vessel having a system for heating a liquid contained therein and producing vapours thereof and a condensation vessel having a system for cooling and condensing the vapours produced in the evaporation vessel. A connecting pipe for connecting the evaporation vessel and the condensation vessel transfers the vapours from the evaporation vessel to the condensation vessel. The amount of vapours transferred from the evaporation vessel to the condensation vessel depends upon the pressure differential between the evaporation vessel and the condensation vessel and area of opening of the connecting pipe.

Abstract: A magnitude difference between intrinsic positive and negative current components forming a PLL's charge pump output current is determined by simultaneously outputting the intrinsic positive and negative pump current components, and incrementally increasing a bias current added to one of the intrinsic current components (e.g., such that the total positive current component is gradually increased). Calibration control voltages generated by the calibration pump output current are measured to determine when magnitudes of the adjusted (e.g., positive) current component and the non-adjusted/intrinsic (e.g., negative) current component are equal, and the bias current amount required to achieve equalization is stored as a digital converter code. During subsequent normal PLL operations, the digital converter code is utilized to control the charge pump such that the magnitude of the positive current component is adjusted by the bias current amount such that the positive and negative current components are matched.

Abstract: A distillation system and process thereof are provided. The system includes an evaporation vessel having a system for heating a liquid contained therein and producing vapours thereof and a condensation vessel having a system for cooling and condensing the vapours produced in the evaporation vessel. A connecting pipe for connecting the evaporation vessel and the condensation vessel transfers the vapours from the evaporation vessel to the condensation vessel. The amount of vapours transferred from the evaporation vessel to the condensation vessel depends upon the pressure differential between the evaporation vessel and the condensation vessel and area of opening of the connecting pipe.

Abstract: A magnitude difference between intrinsic positive and negative current components forming a PLL's charge pump output current is determined by simultaneously outputting the intrinsic positive and negative pump current components, and incrementally increasing a bias current added to one of the intrinsic current components (e.g., such that the total positive current component is gradually increased). Calibration control voltages generated by the calibration pump output current are measured to determine when magnitudes of the adjusted (e.g., positive) current component and the non-adjusted/intrinsic (e.g., negative) current component are equal, and the bias current amount required to achieve equalization is stored as a digital converter code. During subsequent normal PLL operations, the digital converter code is utilized to control the charge pump such that the magnitude of the positive current component is adjusted by the bias current amount such that the positive and negative current components are matched.

Abstract: The present invention discloses a horizontal multi-stage distillation system. The system comprises a feed stream, a distillate stream, a residue stream, a group of vessels, a plurality of vapor non-return valves (NRVs), a plurality of plurality of pumps, a plurality of liquid recycle NRVs, a liquid stream, a vapor stream, a plurality of liquid recycle streams, a plurality of level transmitters, a plurality of flow control valves (FCVs) and a plurality of liquid non-return valves (NRVs). Each vessel is connected to the adjacent vessel. The group of vessels comprises a condenser vessel, a reboiler vessel, a feed vessel, at-least one rectification vessel and at-least one stripping vessel. The present invention provides a horizontal multi-stage distillation system with higher efficiency and operational flexibility compared with equivalent vertical distillation columns. The present invention also avoids the interstage backflow of the liquid and vapors.

Abstract: The present invention relates to systems and methods for desalinating and/or treating polluted water. More particularly, the present invention relates to systems and methods for desalinating and/or treating polluted water using gas hydrates. In particular, the system comprises a desalination tank configured to form gas hydrates using a suitable hydrate former taken from a storage tank that is operatively connected to the desalination tank. With all operations, including formation of gas hydrates, discharging of highly saline water, washing the gas hydrates and dissociation of gas hydrates being conducted in a single pressurized tank such as the desalination tank, the present apparatus provides a simple and efficient solution at a low manufacturing and operating cost.

Abstract: A phase locked loop includes a voltage-controlled oscillator and a current mirror circuit that supplies a drive current to the voltage-controlled oscillator. The current mirror circuit includes a filter between a bias current generator and current mirror transistor. The filter includes a first and a second switch driven in unison with a small duty cycle.

Abstract: An electronic circuit is described in which a charge pump-based digital phase locked loop circuit is augmented with additional circuitry to monitor and control noise and power consumption. The additional circuitry includes a comparator and a measurement stage configured to measure and adjust a unity gain bandwidth of the phase locked loop. In one embodiment, the measurement stage includes two frequency-to-current converters and associated current mirrors.

Abstract: An electronic circuit is described in which a charge pump-based digital phase locked loop circuit is augmented with additional circuitry to monitor and control noise and power consumption. The additional circuitry includes a comparator and a measurement stage configured to measure and adjust a unity gain bandwidth of the phase locked loop. In one embodiment, the measurement stage includes two frequency-to-current converters and associated current mirrors.

Abstract: A phase locked loop includes a voltage-controlled oscillator and a current mirror circuit that supplies a drive current to the voltage-controlled oscillator. The current mirror circuit includes a filter between a bias current generator and current mirror transistor. The filter includes a first and a second switch driven in unison with a small duty cycle.

Abstract: An area efficient distributed device for integrated voltage regulators comprising at least one filler cell coupled between a pair of PADS on I/O rail of a chip and at least one additional filler cell having small size portion of said device is coupled to said I/O rails for distributing portions of said device on the periphery of said chip. The device is coupled as small size portion on the lower portion of said second filler cell for distributing said device on the periphery of said chip and providing maximal area utilization.

Abstract: The present invention discloses a horizontal multi-stage distillation system. The system comprises a feed stream, a distillate stream, a residue stream, a group of vessels, a plurality of vapour non-return valves (NRVs), a plurality of plurality of pumps, a plurality of liquid recycle NRVs, a liquid stream, a vapour stream, a plurality of liquid recycle streams, a plurality of level transmitters, a plurality of flow control valves (FCVs) and a plurality of liquid non-return valves (NRVs). Each vessel is connected to the adjacent vessel. The group of vessels comprises a condenser vessel, a reboiler vessel, a feed vessel, at-least one rectification vessel and at-least one stripping vessel. The present invention provides a horizontal multi-stage distillation system with higher efficiency and operational flexibility compared with equivalent vertical distillation columns. The present invention also avoids the interstage backflow of the liquid and vapours.

Abstract: A phase lock loop (PLL) circuit incorporates switched capacitive circuitry and feedback circuitry to reduce the time to achieve a lock condition. During a first mode, the frequency of a voltage controlled oscillator (VCO) is used to adjust the control voltage of the VCO to achieve a coarse lock condition. During a second mode, a reference frequency is used to control a charge pump to more precisely adjust the control voltage to achieve fine lock of the PLL. Because the VCO frequency is significantly higher than the reference frequency, the control voltage is varied at a greater rate during the first mode. In some embodiments, the time to achieve lock may be further reduced by initializing the VCO control voltage to a particular voltage so as to reduce the difference between the control voltage at start-up and the control voltage at the beginning of the first mode during coarse lock.

Abstract: The present invention relates to systems and methods for desalinating and/or treating polluted water. More particularly, the present invention relates to systems and methods for desalinating and/or treating polluted water using gas hydrates. In particular, the system comprises a desalination tank configured to form gas hydrates using a suitable hydrate former taken from a storage tank that is operatively connected to the desalination tank. With all operations, including formation of gas hydrates, discharging of highly saline water, washing the gas hydrates and dissociation of gas hydrates being conducted in a single pressurized tank such as the desalination tank, the present apparatus provides a simple and efficient solution at a low manufacturing and operating cost.