Abstract: In a method of providing a portfolio by combining a plurality of financial instruments for a prefixed operating period, there are included a setting step of systematically setting up beforehand a plurality of fluctuation scenarios of market prices related to said instruments, a simulation step of making profit and loss simulation in the future for each one of said plurality of fluctuation scenarios, by using first parameters representing said fluctuation scenarios and second parameters representing characteristics of market, an optimizing step of configuring the optimum portfolio out of the set of portfolios which have been reduced in the preceding step, and a step of making a presentation as the optimum portfolio together with the whole or a part of said fluctuation scenarios.

Abstract: In a heat storage air conditioning apparatus, a power demand time-sequence data collecting unit collects time-sequence data on demand for power; a power demand curve estimating unit estimates a power demand curve obtained as a result of analysis of the power demand time-sequence data collected by the power demand time-sequence data collecting unit; a thermal energy load demand estimating unit estimates thermal energy load demand from the power demand curve estimated by the power demand curve estimating unit; an operation unit of a thermal-energy source feeds cooling/heating energy; a heat accumulating unit stores the cooling/heating energy supplied from the operation unit therein; a cold/hot air discharging unit discharges the thermal energy stored in the heat accumulating unit; a cooling/heating energy quantity recognizing unit recognizes the quantity of cooling or heating energy dissipated from the cold/hot air discharging unit; and a converting unit converts the quantity of cooling/heating energy into the