Abstract: A rotorcraft with at least one main rotor and a fuselage, comprising: a tail boom connected to the fuselage, the tail boom extending in a longitudinal direction from the fuselage toward a duct-type portion; a shroud provided at the duct-type portion and forming a transverse duct comprising a circumferential direction and a longitudinal extension oriented at least essentially perpendicular to the circumferential direction and the longitudinal direction of the tail boom; and at least one ducted tail rotor rotatably arranged in the transverse duct; wherein the shroud comprises a first section connected to the tail boom and a second section spaced apart from the tail boom and diametrically opposed to the first section, the first section comprising an airfoil-like aerodynamic profile.

Abstract: Electronic spreadsheet data can be among multiple users. A request can be received from within a first spreadsheet application instance on a first electronic device of a first user to grant or change access permission to data in a specified sub-portion of a first spreadsheet to a second user of a second spreadsheet application instance on a second electronic device of the second user. Based on an access permission of the first user meeting a specified access requirement, from within the spreadsheet application on the electronic device of the first user, grant or change an access permission of the second user to the data in the specified sub-portion of the first spreadsheet.

Abstract: The present invention concerns a method for the manufacture of a partially transparent thin-layer solar module in which the opaque layers (primarily the semiconductor layer and the back contact layer) comprise defined surface regions which lack the material of these layers. These surface regions which are free of material may be produced by not coating them during manufacture or by retroactively removing them from the surface regions.

Abstract: Computer-implemented method and apparatus for displaying keyboard keys on a screen of a computer system, comprising the following steps: displaying graphical icons at predefined positions on a screen; each of the graphical icons representing a command to be executed by the computer system when mouse-clicked; monitoring whether a predefined first key is pressed on a keyboard; and when the predefined first key is pressed, toggling the displayed graphical icons to display predefined second keys at the positions of the graphical icons, each of the second keys forming with the predefined first key a shortcut key for the command represented by the graphical icon.