Abstract: The present invention can provide a hotel reservation system that searches for vacant rooms at lower prices even after making a reservation. A method of hotel reservation that is performed by a server, comprises steps of: obtaining identification information corresponding to vacant rooms of hotels from external servers; obtaining reservation information of a vacant room from a user terminal; transmitting to the user terminal whether a reservation is confirmed; searching for a first vacant room available within a predetermined period from a check-in date until before the check-in date; and providing a reservation change notification through the user terminal if determining the vacant room with the lower price than that of the reserved vacant room by comparing a price of the reserved vacant room and a price of the first vacant room that is available within the predetermined period.

Abstract: A semiconductor device having simplicity in design and improved performance and methods for fabricating the same are provided. The semiconductor device includes a substrate including a frontside and a backside opposite the frontside, an electronic device on the frontside of the substrate, an interlayer insulating layer covering the electronic device, a frontside wiring structure on the interlayer insulating layer, a backside wiring structure on the backside of the substrate, and at least one unit chain connecting the electronic device with the backside wiring structure, the unit chain including a through plug passing through the substrate, a connection contact on the interlayer insulating layer, a first chain plug passing through the interlayer insulating layer to connect the through plug with the connection contact, and a second chain plug passing through the interlayer insulating layer to be connected to the through plug.

Abstract: Methods and systems for synthesizing multicompartment capsules are disclosed, as well as multicompartment polymer capsules formed in accordance with disclosed techniques. At least one plurality of polymer capsules are formed via a capsule-forming process. A feed solution and a reservoir solution are provided, each comprising a biopolymer. The feed solution biopolymer and the reservoir solution biopolymer have opposite charges. Droplets of the feed solution are introduced into the reservoir solution, thereby forming via electrostatic complexation a plurality of polymer capsules. At least a portion of the resulting polymer capsules are then encapsulated in a larger polymer capsule via a similar process, wherein the feed solution utilized for the encapsulation process also comprises the formed smaller capsules.

Abstract: The present invention can provide a hotel reservation system that searches for vacant rooms at lower prices even after making a reservation. A method of hotel reservation that is performed by a server, comprises steps of: obtaining identification information corresponding to vacant rooms of hotels from external servers; obtaining reservation information of a vacant room from a user terminal; transmitting to the user terminal whether a reservation is confirmed; searching for a first vacant room available within a predetermined period from a check-in date until before the check-in date; and providing a reservation change notification through the user terminal if determining the vacant room with the lower price than that of the reserved vacant room by comparing a price of the reserved vacant room and a price of the first vacant room that is available within the predetermined period.

Abstract: A method of system of forming a biopolymer hydrogel structure includes a mold loaded with a cation. At least a portion of the surface of the mold is exposed to a solution comprising a gellable polymer such as alginate. An electric potential is applied to the mold so that the cation therein and the gellable polymer migrate via electrophoresis toward the surface portion, thereby interacting and forming a hydrogel structure adjacent to the surface portion.

Abstract: Methods and systems for synthesizing multicompartment capsules are disclosed, as well as multicompartment polymer capsules formed in accordance with disclosed techniques. At least one plurality of polymer capsules are formed via a capsule-forming process. A feed solution and a reservoir solution are provided, each comprising a biopolymer. The feed solution biopolymer and the reservoir solution biopolymer have opposite charges. Droplets of the feed solution are introduced into the reservoir solution, thereby forming via electrostatic complexation a plurality of polymer capsules. At least a portion of the resulting polymer capsules are then encapsulated in a larger polymer capsule via a similar process, wherein the feed solution utilized for the encapsulation process also comprises the formed smaller capsules.

Abstract: A curved movable beam-stop array which has a generator, a curved grid and a controller. The generator generates radiation beams while rotating to a gantry angle. The curved grid is positioned in the radiation direction of the radiation beams generated from the generator. The controller controls operations of the grid. A plurality of slits of the grid are spaced apart from each other at a predetermined distance and allow at least a portion of the radiation beams generated from the generator to pass through. The controller moves the slit by a predetermined distance when the generator moves by a predefined angle.

Abstract: Disclosed is a curved movable beam-stop array (BSA) which can be applied to accurately and efficiently improve the quality of images of a cone-beam CT (CBCT) system, and particularly, can be applied to not only a simulation CBCT system necessary for radiotherapy and a CBCT system mounted in a radiotherapy apparatus but also to a wide range of fields including plastic surgery, maxillofacial surgery, dental surgery, and the like. The BSA comprises a generator, a curved grid and a controller. The generator generates radiation beams while rotating to a gantry angle. The curved grid is positioned in the radiation direction of the radiation beams generated from the generator. The controller controls operations of the grid. In the BSA, the grid comprises a plurality of slits spaced apart from each other at a predetermined distance, the plurality of slits allowing at least a portion of the radiation beams generated from the generator to pass through.

Abstract: A portable information terminal is provided which includes: a first panel with a first flat board unit including a first accommodating unit and a first hinge unit; a connecting unit including a button unit on one or more surfaces thereof, a first portion of the connecting unit configure to be accommodated in the first accommodating unit so as to be rotatably connected to the first hinge unit; and a second panel which includes a second flat board unit with a second accommodating unit for accommodating a second portion of the connecting unit, and a second hinge unit configured to be rotatably connected to another side of the connecting unit.

Abstract: A portable information terminal is provided which includes: a first panel with a first flat board unit including a first accommodating unit and a first hinge unit; a connecting unit including a button unit on one or more surfaces thereof, a first portion of the connecting unit configure to be accommodated in the first accommodating unit so as to be rotatably connected to the first hinge unit; and a second panel which includes a second flat board unit with a second accommodating unit for accommodating a second portion of the connecting unit, and a second hinge unit configured to be rotatably connected to another side of the connecting unit.