Abstract: A method for operating a gas turbine installation with a measured compressor inlet temperature (Ti-actual) and a virtually constant turbine inlet temperature (TiTiso), wherein to provide safe operation of the gas turbine installation, an increase in a calculated exhaust gas temperature (ATK) is compensated by a reduced mass flow (m) of a flow medium flowing through a compressor of the gas turbine installation. An arrangement for operating the gas turbine installation includes a functional unit and a gas turbine installation with a compressor, a turbine, a control system for operating the method.

Abstract: Methods, systems and computer program products for segmenting users of a website of an online tax preparation application after segmentation or filter criteria has already been programmed by use of selected dynamic, user-defined or supplemental attributes and associated data provided to a segmentation module independently of previously programmed segmentation attributes and data thereof. Programmed attribute data and supplemental attribute data in different formats may be processed and merged or aggregated together such that subsequent queries can specify at least one external or supplemental attribute that was not previously programmed within a segmentation module, while also considering data of one or more of the programmed attributes.

Abstract: A method for operating a gas turbine installation with a measured compressor inlet temperature (Ti-actual) and a virtually constant turbine inlet temperature (TiTiso), wherein to provide safe operation of the gas turbine installation, an increase in a calculated exhaust gas temperature (ATK) is compensated by a reduced mass flow (m) of a flow medium flowing through a compressor of the gas turbine installation. An arrangement for operating the gas turbine installation includes a functional unit and a gas turbine installation with a compressor, a turbine, a control system for operating the method.