Abstract: An apparatus, a method and a computer program, the apparatus comprising: collection circuitry configured to collect position reference data, wherein the collected position reference data is for assisting another apparatus to determine a position of the another apparatus based upon wireless signals received by the another apparatus; receiver circuitry configured to receive control data relating to controlling the transmission of collected position reference data by the apparatus; transmitter circuitry configured to transmit collected position reference data; and processing circuitry configured, in dependence upon the received control data, to selectively control transmission of collected position reference data by the transmitter circuitry.

Abstract: It is disclosed a method, an apparatus and a computer program for monitoring, for a position of a set of one or more positions that are associated with a coverage area of a communication node, if a report comprising a position associated with said coverage area of said communication node and lying in a defined environment of said position for which said monitoring is performed is received as a validation of said position for which said monitoring is performed.

Abstract: It is disclosed to operate a generating/updating process that comprises generating and/or updating at least one model for a coverage area of a communication node and/or at least one process associated with said generating/updating process in dependence on at least one state of a state machine.

Abstract: It is disclosed to determine whether information useable for a generating/updating process that comprises generating and/or updating at least one model for a coverage area of a communication node shall be discarded or made available to said generating/updating process.

Abstract: It is disclosed an apparatus, a method and a computer program for determining, at a terminal, whether at least one terminal position associated with a coverage area of a communication node shall be discarded or reported to allow at least one of said coverage area and said communication node to be characterized at least partially based on said at least one reported terminal position.

Abstract: An apparatus, method and computer program, the apparatus, comprising: receiver circuitry configured to receive first position reference data from a remote location, the first position reference data relating to a first geographical area and being for assisting the apparatus to determine a position of the apparatus within the first geographical area, using wireless signals received at the apparatus; collection circuitry configured to collect second position reference data, the second position reference data being for modification of the first position reference data, at a remote location; positioning circuitry configured to determine a position of the apparatus, the position being within the first geographical area; transmitter circuitry configured to transmit collected second position reference data; and processing circuitry configured, in dependence upon the determined position of the apparatus and the first position reference data, to selectively control transmission of collected second position reference d

Abstract: Methods and devices may request and provide assistance data from an assistance server to a receiver in a global navigation satellite system. A request for assistance data may include a preference list of navigation models suitable for the requesting receiver. Multiple preference lists for different navigation model types (e.g., orbit model, clock model, almanac model) may be included in a single list and/or data structure, or as multiple lists and/or data structures. An assistance server may receive and process the preference list, for example, by parsing and traversing the ordered list(s) for different navigation model types, in order to provide satellite navigation data to the receiver in accordance with suitable navigation models that are available at both the receiver and the assistance server.

Abstract: The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the filter surface by a cleaning member to the discharge end of the pre-thickener and is discharged through the outlet (20). The cleaning member comprises a rotating shaft (30), on which shaft at least one screw thread (32) is fixed so as to leave a free space between the shaft and the screw thread. Essentially non-thickened pulp is allowed to flow through the apparatus via this space.

Abstract: The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the filter surface by a cleaning member to the discharge end of the pre-thickener and is discharged through the outlet (20). The cleaning member comprises a rotating shaft (30) on which shaft at least one screw thread (32) is fixed so as to leave a free space between the shaft and the screw thread. Essentially non-thickened pulp is allowed to flow through the apparatus via this space.

Abstract: The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the filter surface by a cleaning member to the discharge end of the pre-thickener and is discharged through the outlet (20). The cleaning member comprises a rotating shaft (30), on which shaft at least one screw thread (32) is fixed so as to leave a free space between the shaft and the screw thread. Essentially non-thickened pulp is allowed to flow through the apparatus via this space.

Abstract: Chemical pulp is produced by cooking comminuted cellulosic fibrous material (e.g. wood chips) in a continuous digester or batch digesters or produce brown stock, and washing the brown stock in a brown stock washer to produce chemical pulp, oxygen delignifying the chemical pulp at medium consistency, and then screening the oxygen delignified pulp to produce an accept fraction and a shive-containing reject fraction. Drawbacks inherent in the prior art are overcome by directly transporting (i.e. without refining or accessory oxygen delignification) the shive-containing rejects fraction to the main fiber line before oxygen delignification (e.g. to just before a mixer for the oxygen delignification stage, to between the brown stock washer and mixer, to a coarse screen between the digester and the brown stock washer, and/or to a washer for the coarse rejects from the coarse screen).

Abstract: A fiber suspension, such as an in a pulp mill, is treated in an manner which minimizes both the investment and the operating costs associated with a screening plant. A single pump has an outlet connected to a knotter and primary and secondary screening states so that the pump provides substantially the sole motive force to the pulp moving it through the knotter and screening stages. The knotter and screening stages are provided in a common housing with the knotter vertically above the screening stages, and the screening stages one above the other. A single motor may be provided to rotate rotatable elements associated with the knotter and screening stages. The knotter may be connected to a knot washer external of the housing by a valved conduit less than two meters in length, and the secondary screening stage can be connected to a tertiary screening stage exterior of the housing by a valved conduit less than two meters long.

Abstract: An apparatus for screening and thickening cellulose pulp keeps cleaner than conventional apparatus. Pulse members in accordance with the prior art are constructed so that when the capacity of the screening apparatus is increased, for example by using greater pressure differences or the cleanliness of the accept is increased by decreasing the size of the perforations or slots, a situation is created in which the screen cylinder tends to clog. The pulse member of the present screening apparatus subjects the screen cylinder or screen surface to a pulse cleaning action so that there is a minimal possibility to allow the pressure effect to "escape" past the area being cleaned. The higher the consistency of the fiber matting is or the worse the screen surface is clogged, the stronger the pulse cleaning of the screen surface.