Abstract: A display method is provided using a display that is operable to display an image to a viewer. The display method includes detecting one or both of an initial position and/or orientation of the viewer's head, and generating an image for display according to the detected position and/or orientation. A current position and/or orientation of the viewer's head are detected at a time at which the image is to be displayed. The method also includes re-projecting the generated image according to any differences between the initial position and/or orientation and the current position and/or orientation of the viewer's head, and displaying the re-projected image using the display.

Abstract: A method of roll forming a plurality of composite components.

Abstract: The invention relates to a rib foot having a blade formed by first and second blade parts that are connected by a bite. The rib foot has a first base part that is connected to the first blade part by a first corner and a second base part that is connected to the second blade part by a second corner. The rib foot also has a first flange that is connected to and extends away from the first base part and a second flange that is connected to and extends away from the second base part. The blade and base parts are formed from a composite material that includes reinforcement fibres embedded in a matrix. At least some of the reinforcement fibres run continuously from the first base part into the second base part via the first corner, the blade and the second corner.

Abstract: The invention relates to a structure having a panel, a stringer and a rib. The stringer has a stringer flange that is joined to an inner surface of the panel and a stringer web that extends away from the stringer flange. The rib has a rib web and a rib foot. The rib foot has a rib foot flange that is joined to the stringer web, first and second rib foot base parts that are joined to the inner surface of the panel or to the stringer flange and a rib foot web that is joined to the rib web. The rib foot is formed as a single folded piece such that the rib foot flange is connected to the rib foot web by a first folded corner, the first rib foot base part is connected to the rib foot flange by a second folded corner and the second rib foot base part is connected to the rib foot web by a third folded corner.

Abstract: A structure having a panel, a stringer, and a rib is disclosed. The stringer includes a stringer flange that is joined to the panel and a stringer web that extends away from the stringer flange. The rib includes a rib web that has first and second faces and a rib foot that has a first rib foot flange that is joined to the stringer web, a second rib foot flange that is joined to the panel and a rib foot web that is joined to the first face of the rib web. The first rib foot flange is connected to the rib foot web by a first corner that includes at least one layer which runs continuously from the first rib foot flange into the rib foot web via the first corner. The second rib foot flange is connected to the rib foot web by a second corner that includes at least one layer which runs continuously from the second rib foot flange into the rib foot web via the second corner.

Abstract: An efficient system for evaluating collection membership in a large data graph. The system includes a data graph of nodes connected by edges and an index of constraints from collection definitions, a definition specifying at least one condition with at least one constraint, where a constraint has a constraint type and a constraint expression. Multiple conditions in the definition may be conjunctive. The system may also include instructions that, when executed by the at least one processor, cause the system to: evaluate an edge for a node in the data graph against the index to determine conditions met by the edge and its associated neighborhood, repeat the evaluating for each edge associated with the node in the data graph, determine that conditions for a first collection are met, and generate an indication in the data graph that the node is a member of the first collection.

Abstract: A system for automatically generating entity collections comprises a data graph including entities connected by edges and instructions that cause the computer system to determine a set of entities from the data graph and to determine a set of constraints that has a quantity of constraints. A constraint in the set represents a path in the data graph shared by at least two of the entities in the set of entities. The instructions also cause the computer system to generate candidate collection definitions from combinations of the constraints, where each candidate collection definition identifies at least one constraint and no more than the quantity of constraints. The instructions also cause the computer system to determine an information gain for at least some of the candidate collection definitions, and store at least one candidate collection definition that has an information gain that meets a threshold as a candidate collection.

Abstract: A ball collection system for a tennis court (1), configured to be provided along an edge (2a) of a tennis court, comprising: a first slope (11), extending along said edge of the tennis court, and configured such that the height of the first slope decreases in a first direction away from said edge of the tennis court; a second slope 12), arranged adjacent to the first slope on the opposite side of the first slope from the edge of the tennis court, and configured such that the height of the second slope decreases in a second direction, perpendicular to the first direction, from a first end that is no higher than the lowest part of the first slope to a second end; and a ball collector (14), arranged at the second end of the second slope and configured to receive balls that roll down the second slope.

Abstract: A solution for conducting an auction, such as an online auction, is provided, which includes provisions for sharing with bidders a portion of a bid. A method for conducting the auction includes identifying an item for auction; receiving a first bid for the item placed at a first time; receiving a second bid for the item placed at a second time, wherein the second bid exceeds the first bid by a bid increment and the second time is different than the first time by a time increment; and assigning a portion of the second bid for distribution to at least one participant of the auction. In various embodiments, the portion may be assigned to all bidders, the winning bidders, only the non-winning bidders, and/or the like. The distribution of the portion may be time and/or bid amount related.

Abstract: A solution for conducting an auction, such as an online auction, is provided, which includes provisions for sharing with bidders a portion of a bid. A method for conducting the auction includes identifying an item for auction; receiving a first bid for the item placed at a first time; receiving a second bid for the item placed at a second time, wherein the second bid exceeds the first bid by a bid increment and the second time is different than the first time by a time increment; and assigning a portion of the second bid for distribution to at least one participant of the auction. In various embodiments, the portion may be assigned to all bidders, the winning bidders, only the non-winning bidders, and/or the like. The distribution of the portion may be time and/or bid amount related.