Abstract: Disclosed herein is a gas-liquid mixing and distributing device. The gas-liquid mixing and distributing device includes a mixing head including a chamber, a plurality of gas spray nozzles, and a plurality of liquid spray nozzles; and a liquid supplying part connected to the mixing head and supplying a liquid to the mixing head, wherein the plurality of gas spray nozzles and the plurality of liquid spray nozzles included in the mixing head are uniformly mixed and distributed so that the liquid and gas sprayed from the mixing head are uniformly mixed with each other.

Abstract: Provided is a complex event processing apparatus referring to a table within an external database as an external reference object. The complex event processing apparatus includes a query language analysis unit; a meta information management unit; a query language generation unit; a query language storage unit; and an external interface unit.

Abstract: Provided are partially and fully earth-anchored cable-stayed bridges, each of which uses a prestressing unit including anchor units and a prestressing member from deck segments installed at its main span such that the prestressing unit serves as a conventional windproof cable and can simultaneously introduce a tensile stress. Thereby, a magnitude of the maximum compressive stress acting on a cross section of each main-span deck segment is reduced, so that it is possible to reduce a cross-sectional area of each main-span deck segment and thus to ensure economical construction. All or part of the compressive stress generated at the main span can be offset by the tensile stress caused by the prestressing member.

Abstract: Provided are partially and fully earth-anchored cable-stayed bridges, each of which uses a prestressing unit including anchor units and a prestressing member from deck segments installed at its main span such that the prestressing unit serves as a conventional windproof cable and can simultaneously introduce a tensile stress. Thereby, a magnitude of the maximum compressive stress acting on a cross section of each main-span deck segment is reduced, so that it is possible to reduce a cross-sectional area of each main-span deck segment and thus to ensure economical construction. All or part of the compressive stress generated at the main span can be offset by the tensile stress caused by the prestressing member.