Abstract: The deterioration of the operational efficiency of an optimal object placement device caused by the degradation in the access speed to the objects is inhibited. An optimal object placement device optimizes, in an information processing system having a storage area in each of a plurality of sites and in which a user can access objects stored in the storage area of all of the sites from each of the sites, placement of each of the objects; and an optimal object placement method is executed by the optimal object placement device, wherein control is executed for detecting an access tendency of the user's access to the objects.

Abstract: An aircraft control system includes a flow control device and a control circuit. The flow control device is configured to control a flow of air around an aircraft. The control circuit is configured to control the flow control device so that a pressure distribution loaded on a surface of a structure that constitutes the aircraft is equal to a control value of a pressure distribution calculated based on a physical quantity detected by a sensor provided in the aircraft. The physical quantity relates to the air.

Abstract: The deterioration of the operational efficiency of an optimal object placement device caused by the degradation in the access speed to the objects is inhibited. An optimal object placement device optimizes, in an information processing system having a storage area in each of a plurality of sites and in which a user can access objects stored in the storage area of all of the sites from each of the sites, placement of each of the objects; and an optimal object placement method is executed by the optimal object placement device, wherein control is executed for detecting an access tendency of the user's access to the objects.

Abstract: An aircraft control system includes a flow control device and a control circuit. The flow control device is configured to control a flow of air around an aircraft. The control circuit is configured to control the flow control device so that a pressure distribution loaded on a surface of a structure that constitutes the aircraft is equal to a control value of a pressure distribution calculated based on a physical quantity detected by a sensor provided in the aircraft. The physical quantity relates to the air.

Abstract: [Object] To provide a surveillance system having a wide range of applicability. [Realizing Means] A surveillance system 10 includes a plurality of recorders 20, 20, . . . . The recorders 20, 20, . . . , are grouped for each floor of a building. Each group of recorders 20, 20, . . . , is connected in series to a monitor device 80, 82 or 84. A plurality of surveillance cameras 50, 50, . . . , are connected to the recorders 20, 20, . . . . The recorders 20, 20, . . . , are connected to a single controller 60. The controller 60 controls each group of recorders 20, 20, . . . .

Abstract: An aliphatic hydrocarbon solvent solution obtained by extracting dioxins contained in a specimen such as soil with an aliphatic hydrocarbon solvent is supplied to an alumina layer 33 side of a sample-preparation column 30 in which the alumina layer 33 is placed on a carbon material layer 32. Upon flowing and passing of an aliphatic hydrocarbon solvent through the alumina layer 33 and the carbon material layer 32 in this order, the dioxins contained in the aliphatic hydrocarbon solvent solution are trapped in these layers. Then, one extracting solvent among toluene, a mixed solvent of toluene and an aliphatic hydrocarbon solvent, and a hydrophilic solvent capable of dissolving dioxins is supplied to the sample-preparation column 30 in the direction opposed to the passing direction of the aliphatic hydrocarbon solvent, the dioxins trapped in the carbon material layer 32 and the alumina layer 33 are extracted to obtain a sample for analysis of dioxins.

Abstract: There is provided a method for preparing a sulfone or sulfoxide compound, characterized in that a sulfide compound is allowed to react with hydrogen peroxide in the presence of a metal oxide catalyst formed by the reaction of hydrogen peroxide with at least one metal or metal compound selected from tungsten metal; molybdenum metal; a tungsten compound comprising tungsten and a Group IIIb, IVb, Vb, or VIb element exclusive of oxygen; and a molybdenum compound comprising molybdenum and a Group IIIb, IVb, Vb, or VIb element exclusive of oxygen.

Abstract: There is provided a method for preparing a sulfone or sulfoxide compound, characterized in that a sulfide compound is allowed to react with hydrogen peroxide in the presence of a metal oxide catalyst formed by the reaction of hydrogen peroxide with at least one metal or metal compound selected from tungsten metal; molybdenum metal; a tungsten compound comprising tungsten and a Group IIIb, IVb, Vb, or VIb element exclusive of oxygen; and a molybdenum compound comprising molybdenum and a Group IIIb, IVb, Vb, or VIb element exclusive of oxygen.

Abstract: A process for preparing an optically active alcohol by reacting a prochiral ketone corresponding to the optically active alcohol and an acid with a mixture of (1) a boron-containing compound selected from the group consisting of i) a borane compound which is obtained from an optically active .beta.-aminoalcohol and a boron hydride; or obtained from the optically active .beta.-aminoalcohol, a metal borohydride and an acid and ii) an optically active oxazaborolidine and (2) a metal borohydride; and a process for preparing an optically active amine by reacting an oxime derivative and an acid with a mixture of (1) a boron-containing compound selected from the group consisting of i) a borane compound which is obtained from an optically active .beta.-aminoalcohol and a boron hydride, or obtained from said optically active .beta.-aminoalcohol, a metal borohydride and an acid and ii) an optically active oxazaborolidine, and (2) a metal borohydride.