Abstract: A heating/cooling device (1) is proposed for vehicles, in particular motor vehicles, with a compressor (3), a refrigerant circuit (5), a gas cooler (7), an evaporator (9), and with an expansion valve (37) arranged between the gas cooler (7) and evaporator (9) in the refrigerant circuit (5). The heating/cooling device (1) is distinguished in that the gas cooler (7) or the evaporator (9) is coupled with a liquid coolant circuit (13, 23) which cooperates with an interior heat exchanger (19) or an external air heat exchanger (27), or that the gas cooler (7) and the evaporator (9) are each coupled with an its own liquid coolant circuit (13, 23), wherein one of the liquid coolant circuits (13, 23) cooperates with the interior heat exchanger (19) and the other liquid coolant circuit (23, 13) cooperates with the external air heat exchanger (27).

Abstract: The proposal is for a heating/cooling device for vehicles, in particular motor vehicles with electric drive, having a refrigerant circuit, which comprises a compressor (3), a gas cooler (5), an evaporator (7) and an expansion valve arranged between the gas cooler (5) and the evaporator (7). The heating/cooling device is characterized in that the gas cooler (5) interacts with a first liquid coolant circuit (9), and the evaporator (7) interacts with a second liquid coolant circuit (11), wherein an interior heat exchanger (17) can be assigned to the first or the second liquid coolant circuit (9, 11), and wherein an external-air heat exchanger (19) can be assigned to the first or the second liquid coolant circuit (9, 11).

Abstract: An attachment element is provided with a central cylinder. The first end of the central cylinder has an internal thread and the other end terminates with an outer disk, where it can be screwed down, and passes through an inner disk between the outer disk and its first end.

Abstract: A training management system includes a mechanism for defining a time-dependent group of learners, a mechanism for defining a responsible party who is responsible for the time-dependent group of learners and a mechanism for defining at least one common objective for each of the group of learners.

Abstract: A method for computer assisted training and credentialing includes providing a training session, taught by an instructor, or a computer program acting as an instructor, to one or more participants. One or more process steps are executed at corresponding entry points to provide credentialing of those of the one or more participants who are deemed to have satisfactorily participated in the training session.