Abstract: An airfoil includes an airfoil wall that defines a leading end, a trailing end, and first and second sides that join the leading end and the trailing end. A rib connects the first and second sides of the airfoil wall. The rib defines a tube portion that circumscribes a rib passage, and first and second connector arms that solely join the tube portion to, respectively, the first and second sides of the airfoil wall.

Abstract: A system includes an isobaric pressure exchanger (IPX) configured to exchange pressure between a first fluid and a second fluid. The IPX includes a rotor configured to rotate about a longitudinal axis of the rotor. The rotor forms rotor ports arranged substantially symmetrically around the longitudinal axis at a distal end of the rotor. The IPX further includes an end cover configured to be disposed at the first distal end of the rotor. The end cover forms end cover ports. The rotor ports are arranged for hydraulic communication with the end cover ports. The IPX further includes an insert disposed between two of the rotor ports or between two of the end cover ports.

Abstract: A subsea fluid pressure-increasing machine includes an elongated member that is rotatable about a longitudinal axis. The machine also may include a plurality of impellers each having a leading edge, a trailing edge, a suction side, and a chord line defined by a line between the leading and trailing edges. Each impeller is fixedly mounted to the member such that a chord angle defined by an angle between the chord line and the rotation direction is less than or equal to a stall angle at which a maximum force is exerted on a fluid in a direction primarily parallel to the longitudinal axis when the member is rotated in the rotation direction. At least some of the impellers comprise one or more features that effectively reduce a pressure peak or specific loading of the suction side such that the axial length of the impeller is configured to be reduced without exceeding a desired specific load.

Abstract: Provided is an axial fan including: a motor; and an impeller for sending air in an air-blowing direction, wherein the impeller includes: a base covering the motor; and plural blades mounted on an outer peripheral surface of the base, a wind receiving surface of the blade includes a concave portion recessed toward a downstream side in the air-blowing direction, a bottom point of the concave portion is located downstream in the air-blowing direction relative to a first imaginary line perpendicular to the air-blowing direction, the first imaginary line being drawn in a radial direction from a joint position of the blade where the wind receiving surface and the outer peripheral surface of the base merge, and the bottom point is displaced from inward to outward in the radial direction, in going from upstream to downstream in the air-blowing direction, until reaching a radially central part of the blade.

Abstract: The invention relates to a method for manufacturing a turbine engine blade (16) including an active-surface wall (17) and a passive-surface wall (18) separated from one another, this blade (16) including a tip that has a closing wall grouping together the active-surface (17) and passive-surface (18) walls in the region of this tip to define the bottom (23) of a bathtub tip shape located at the tip of the blade, the method comprising a moulding step implementing a core defining the bathtub tip shape. According to the invention, there is a step of adding metal to the bottom (23) of the bathtub tip by means of a Direct Laser Additive Manufacturing (CLAD) method, to deposit material onto the bottom of the bathtub tip to form therein an inner partition (28) supported by the bottom thereof (23).

Abstract: A fan guard for a fan container includes a housing and a plurality of wings. The housing has a hollow interior defined by a cylindrical inner surface. The housing extends longitudinally between a first housing end and a second housing end. The plurality of wings is positioned within the hollow interior of the housing. Each wing of the plurality of wings extends radially, from a center of symmetry of the cylindrical inner surface to the cylindrical inner surface. Each wing of the plurality of wings is radially curved between the first housing end and the second housing end.

Abstract: A pressure exchanger (1) including a housing (2), a drive shaft (3) and a cylinder drum (4) rotatably arranged in the housing (2) is described, the cylinder drum (4) including two front faces and at least one cylinder (5) between the front faces, wherein the housing (2) includes a port flange (7, 8) at each end of the cylinder drum (4) and at least at one end of the cylinder drum (4) a pressure shoe (18) is arranged between the cylinder drum (4) and the port flange of this end. Such a pressure exchanger should be operated in a cost-effective manner. To this end an adjustable stop arrangement (19) is arranged between the pressure shoe (18) and the cylinder drum (4).

Abstract: A method includes detecting a change in connectivity information for a mobile device. The connectivity information allows another device to connect to the mobile device at least while the mobile device is wirelessly connected to a network. In response to the change in connectivity information for a mobile device, performing an update with a service provider to indicate the change in connectivity information. Another method includes receiving an update from a first electronic device, where the update indicates one or more changes in connectivity information for the first electronic device. The method includes updating one or more second electronic devices with changed connectivity information of the first electronic device. Another method includes receiving from a service provider an update of changed connectivity information for a first electronic device for which a second electronic device is subscribed at the service provider for updates to connectivity information for the first electronic device.

Abstract: The embodiments described herein provide ranging capabilities in RF-opaque environments, such as a jungle, utilizing transponders located on a property line. In particular, the embodiments described herein provide for determining a perpendicular distance to a property line from a ranging device. The transponders are located on the property line and a separated from each other by a known distance. The ranging device transmits RF signals to the transponders, which are received by the transponders and re-broadcasted back to the ranging device on a different frequency. The ranging device uses information about the transmitted and received RF signals and the known distance to calculate a perpendicular distance from the ranging device to the property line.

Abstract: During call setup in a communication system, first and second communication terminals may negotiate regarding which codecs to use for a streaming media session. In some cases, the first communication terminal may support a prioritized codec that has been designated for preferential use. In cases where the second communication terminal does not support the prioritized codec, a serving network may nevertheless select the prioritized codec for media communications with the first communication terminal, and may perform transcoding between the prioritized codec and a non-prioritized codec that has been selected for use with the second communication terminal. For newly initiated sessions, however, the serving network may determine the amount of resources that are available for transcoding. When there are limited resources, the serving network may opt to not use the prioritized codec in the situation described above, and may instead use a non-prioritized codec for end-to-end communications, without transcoding.

Abstract: Control plane devices are selected by an access point for establishment of end-to-end control plane for a user equipment (UE) coupled to (or requesting to couple to) the access point. In one aspect, the selection is based on data extracted during the setup and/or registration messages communicated between the access point and UE during attachment of the UE to the access point and/or an internal derived mapping of the control pane devices to the access point. In one example, a control plane device pool is segregated to and different sets of control plane devices are selected and utilized to handle traffic associated with different services to improve scaling and flexibility.

Abstract: A method for transmitting and receiving a wireless signal in a wireless communication system and an apparatus therefor are disclosed. Specifically, a method for transmitting and receiving a wireless signal in an unlicensed band includes the steps of: performing a clear channel assessment (CCA) during a predetermined time interval in the unlicensed band; and transmitting a wireless signal in the unlicensed band when it is determined that the unlicensed band is in an idle state where the unlicensed band is not occupied by other wireless communication devices, wherein when the wireless communication device uses a directional antenna, a first difference between a CCA range and an interference range when the wireless signal is transmitted and received using the directional antenna may be adjusted to be equal to a second difference between the CCA range and the interference range when the wireless signal is transmitted and received using an omni-directional antenna.

Abstract: The present invention is to provide the mobile communication system which enables power consumption reduction for the mobile station with dual mode capability by unifying the location registration and paging processing for every mobile communication system. The mobile communication system is so arranged to perform location registration processing and paging processing for the mobile station by only one of radio communication systems. And the mobile station can access to any other radio communication systems.

Abstract: A method and a device for selecting a radio in an electronic device with a hybrid radio function. The method includes detecting an entrance to a hybrid radio function; determining a default radio mode to be executed as a default in response to a preconfigured mode determination condition; and receiving and reproducing a radio broadcast in a radio mode corresponding to the determined default radio mode. The present disclosure can be applied to various other embodiments based on the aforementioned embodiment.

Abstract: Systems, devices, and methods for checkpoint-based location monitoring via a mobile device are described herein.

Abstract: Systems and methods for managing communications among a central entity and multiple local entities in a telecommunication core network are disclosed. Localized central entities may be established across the core network based on localization patterns of telecommunication devices. The localized central entities may duplicate a portion of central entity data and provide local entities more efficient access to the data.

Abstract: An association method for data transmission between devices in a neighbor awareness network (NAN), and a device using the same are provided. A first NAN device transmits, to a second NAN device, a service discovery frame having a service identifier (ID) and association interval information, and transmits an authentication request for requesting authentication at a time indicated by the association interval information.

Abstract: A method is provided for obtaining reference signal measurements over a structured interface to support RF optimization via machine learning. The method, performed by a network device, includes identifying a target cluster of cell towers for a radio access network (RAN); generating a model for collecting RAN measurements from mobile communication devices in the target cluster; and sending the model via a structured reference point to client applications on the mobile communication devices. The model may direct collection of and sending of the RAN measurements by the client applications. The method may further include receiving, via the structured reference point, the RAN measurements from the client applications based on the model; and aggregating the RAN measurements to represent aspects of the target cluster based on the model.

Abstract: Disclosed are a wireless positioning method and a wireless positioning device. When the wireless positioning device is off-line, the information relevant to at least one Wi-Fi access point, at least one Bluetooth access point and at least one reference point is stored. When the wireless positioning device is on-line, the target position of the wireless positioning device is calculated according to the stored information.

Abstract: A method includes optimizing a handover behavior of a mobile radio communication network including at least a first base station and a second base station. The method includes (a) performing a handover of a UE from the first base station to the second base station; (b) adding an information element representing a property of the UE to a report message including information about the performed handover; (c) forwarding the report message from the second base station to the first base station; and (d) optimizing the handover behavior of the mobile radio communication network based on the added information element. Further, it is described a base station which is configured for carrying out the described handover behavior optimization method.