Abstract: A converter includes a first bridge arm and a voltage clamping unit. The first bridge arm includes a first switching unit. The voltage clamping unit is coupled to the first bridge arm, and includes a first charging branch and a second charging branch. The first charging branch is configured to have a first resonant frequency, to absorb a first spike of the first switching unit. The second charging branch is configured to have a second resonant frequency to absorb a second spike of the first switching unit.

Abstract: Authentication is widely used to protect consumer data and computing services, such as email, document storage, and online banking. Current authentication models, such as those employed by online identity providers, may have limited options and configurations for authentication schemes. Accordingly, as provided herein, a model based authentication scheme may be configured based upon a policy and/or an authentication mechanism list. The policy may define the target resource, a user, a group the user belongs to, devices used to connect to the target resource, a service owning the target resource, etc. The authentication mechanism list may comprise predefined authentication mechanisms and/or user plug-in authentication mechanisms (e.g., user created authentication mechanism). Once the authentication scheme is configured, it may be enforced upon authentication requests from a user. Feedback may be provided to the user based upon patterns of usage of the target resource.

Abstract: A plunger type safety valve, includes a valve body, a valve rod, and a tube piece. The valve body is provided with a first water inlet port and a first water outlet port, the first water inlet port is connected to a water pipe of a local water supply plant, while the first water outlet port is connected to a water input end of a filtering device. The valve rod is disposed vertically in an inner chamber of the valve body, to switch between connection and disconnection of the first water inlet port and the first water outlet port. And the tube piece is connected fixedly with a lower end of the valve body, to form into a chamber body, and is provided with a second water inlet port and a second water outlet port.

Abstract: Methods for producing proteins, for example, recombinant meningococcal 2086 proteins, using fed-batch fermentation with continuous input of an inducer after achieving a threshold parameter, and optionally continuous input of a carbon source, for example, a constant rate input, to improve protein yields, as well as high density protein compositions and compositions for use in the methods of the present invention, are provided.

Abstract: An integrated power electronics assembly module includes a power unit and a clamping auxiliary circuit board. The power unit includes a power level circuit board and a shielding casing. The power level circuit board is contained in the shielding casing. The clamping auxiliary circuit board is disposed against the shielding casing and stacked with the power level circuit board to reduce a parasitic inductance generated by a commutation loop constituted by the power level circuit board and the clamping auxiliary circuit board. The clamping auxiliary circuit board is electrically coupled to the power level circuit board via the shielding casing.

Abstract: A power converter includes a primary side compensation capacitor, a transformer and a secondary side compensation capacitor. The primary side compensation capacitor receives a first AC voltage from a first switch circuit. The transformer receives the first AC voltage to generate a second AC voltage. The secondary side compensation capacitor transfers the second AC voltage to a second switch circuit to generate a DC output voltage. The operating frequency of the first switch circuit is set within the 0.8*fa to 1.2*fb, and fb is at most 1.5 times of fa. The primary side compensation capacitor and a primary side leakage inductance of the transformer correspond to a first resonant frequency, the secondary side compensation capacitor and a secondary side leakage inductance of the transformer correspond to a second resonant frequency, fa and fb are the lower one and the higher one of the first and second resonant frequency respectively.

Abstract: A converter and method for reducing voltage of node thereof are disclosed herein. The converter includes a first transmitting circuit and a second transmitting circuit. The first transmitting circuit is configured to receive a first AC voltage. The second transmitting circuit is electrically coupled to the first transmitting circuit and the second transmitting circuit is configured to transmit a second AC voltage according to the first AC voltage. One of the first transmitting circuit and the second transmitting circuit includes at least one divider unit and the other one of the first transmitting circuit and the second transmitting circuit includes at least two divider units. Each of the divider units includes an inductor network and a capacitor network coupled in series. The inductor network and the capacitor network of the adjacent divider units are coupled in series alternately.

Abstract: Methods and systems are described for determining and providing instructions for manual adjustment of a tilt angle of a radio frequency/free space optical transceiver system. Specifically, these instructions are provided for adjusting a tilt angle of a transceiver system using a tilt adjustment so that the transceiver system is approximately at a center of a range of motion of a gimbal assembly. A user interface in communication with a computing system of the local transceiver system provides instructions so that the above-described adjustments are implemented accurately and precisely. This tilt adjustment improves the reliability of the communication network because the gimbal assembly is able adjust the position of the transceiver system during relative movement between the transceivers system, thus maintaining the link despite the relative movement.

Abstract: A DC connector with a voltage-stabilizing function has a tube and a wire connected with a noise-resistant filter between the tube and the wire. The tube has an upper cap and a lower opening. The lower opening has an internal terminal for electrical connection when the tube is inserted into a corresponding socket. The upper cap of the tube has a first connecting part. An outer wall of the tube near the upper ring has a second connecting part. The filter has two electrode terminals electrically connecting to the first and second connecting parts, respectively. The first and second connecting parts also electrically connect to the anode and cathode of the wires. Therefore, when an electrical signal is sent from the wire to the first connecting part, the filter provides the functions of filtering noises for stabilizing voltage.

Abstract: A federated realm discovery system within a federation determines a “home” realm associated with a portion of the user's credentials before the user's secret information (such as a password) is passed to a non-home realm. A login user interface accepts a user identifier and, based on the user identifier, can use various methods to identify an account authority service within the federation that can authenticate the user. In one method, a realm list of the user device can be used to direct the login to the appropriate home realm of the user. In another method, an account authority service in a non-home realm can look up the user's home realm and provide realm information directing the user device to login at the home realm.

Abstract: Methods for producing proteins, for example, recombinant meningococcal 2086 proteins, using fed-batch fermentation with continuous input of an inducer after achieving a threshold parameter, and optionally continuous input of a carbon source, for example, a constant rate input, to improve protein yields, as well as high density protein compositions and compositions for use in the methods of the present invention, are provided.

Abstract: In one embodiment, a network file management system 120 may use a persistent metadata store 410 and an access control list 420 to facilitate a batch rollout. The network file management system 120 may maintain a content database 312. A network file management system 120 may store a metadata set for the content database 312 in a separate persistent metadata store 410.

Abstract: A multifunctional dispenser includes a main body having a connecting nozzle and a water supply pipe. A control valve, a regulating device, a proportional control device and a ventilation valve are on the main body. The bottom of main body communicates with a container through the proportional control device. The control valve determines the water flow of the water supply channel. The regulating device is a rotating cylinder passing through the main body. The cylinder has a valve track and a proportional controller track corresponding to the control valve and the proportional control device respectively. The valve track includes arc sections with unequal depths. The proportional controller track includes grooves with unequal depths and supports the proportional control device. A proportional regulator of the proportional control device has liquid outlet holes. The control valve controls the ventilation valve to open/close a gas inlet channel of a concentrated liquid container.

Abstract: A method of manufacture of an integrated circuit packaging system includes: providing an interposer having an interposer bottom side and an interposer top side; attaching a base integrated circuit to the interposer bottom side; attaching a lead to the interposer bottom side, the lead adjacent the base integrated circuit and entirely below the interposer; and forming an encapsulation partially covering the lead and exposing the interposer top side.

Abstract: A converter includes a first bridge arm, a second bridge arm, two switch units and a voltage clamp circuit. The first bridge arm includes a first switch unit and a second switch unit that are electrically coupled in series at an output terminal. The second bridge arm includes two voltage sources that are electrically coupled in series at a neutral point terminal. The two switch units are electrically coupled in series at a common connection terminal, and are arranged between the neutral point terminal and the output terminal. The voltage clamp circuit is electrically coupled to the output terminal, the common connection terminal, the neutral point terminal, and one of a positive input terminal or a negative input terminal, and the circuit is shared by the two switch units to clamp voltages across the two switch units.

Abstract: A converter includes a first bridge arm, a second bridge arm, a switch circuit and a voltage clamp circuit. The first bridge arm includes a first switch unit and a second switch unit that are electrically coupled in series at an output terminal. The second bridge arm includes two voltage sources that are electrically coupled in series at a neutral point terminal. The switch circuit is disposed between the neutral point terminal and the output terminal. The voltage clamp circuit is electrically coupled to the output terminal, the neutral point terminal, and one of a positive input terminal and a negative input terminal, and is configured to clamp voltage across the switch circuit.

Abstract: A composition is disclosed that includes fluorinated polymer and a non-fluorinated polymer. The fluorinated polymer includes first divalent units independently represented by formula and second divalent unit independently comprising a pendent cationic, anionic, amphoteric, or amine-oxide group or a pendent poly(alkyleneoxy) segment. The non-fluorinated polymer is R2O-(EO)p—(R3O)q-(EO)p—R2 or R2O—(R3O)q-(EO)p—(R3O)q—R2. A method of making the composition and methods of reducing the surface tension of a liquid and a method of treating a hydrocarbon-bearing formation are also disclosed.

Abstract: Methods and systems are described for determining and providing instructions for manual adjustment of a tilt angle of a radio frequency/free space optical transceiver system. Specifically, these instructions are provided for adjusting a tilt angle of a transceiver system using a tilt adjustment so that the transceiver system is approximately at a center of a range of motion of a gimbal assembly. A user interface in communication with a computing system of the local transceiver system provides instructions so that the above-described adjustments are implemented accurately and precisely. This tilt adjustment improves the reliability of the communication network because the gimbal assembly is able adjust the position of the transceiver system during relative movement between the transceivers system, thus maintaining the link despite the relative movement.

Abstract: A discharge lamp system includes an AC power source, a rectifier, a power factor correction (PFC) circuit, a half-bridge circuit, and a controller. The AC power source provides an AC power. The rectifier converts the AC power into a DC power. The PFC circuit is electrically coupled to the rectifier and is configured for generating an output voltage. The half-bridge circuit is electrically coupled to the PFC circuit and a discharge lamp, and is configured for converting the output voltage into a voltage required by the discharge lamp. The controller is electrically coupled to the PFC circuit and the half-bridge circuit, and includes a timer for counting time, in which the controller controls the output voltage of the PFC circuit in accordance with a time period counted by the timer.

Abstract: In order to solve a problem that current terminal display control techniques are based on manual operations, the present disclosure provides a display control method, device and terminal.