Abstract: Provided are an inter prediction method and a motion compensation method. The inter prediction method includes: performing inter prediction on a current image by using a long-term reference image stored in a decoded picture buffer; determining residual data and a motion vector of the current image generated via the inter prediction; and determining least significant bit (LSB) information as a long-term reference index indicating the long-term reference image by dividing picture order count (POC) information of the long-term reference image into most significant bit (MSB) information and the LSB information.

Abstract: A water treatment apparatus using a lamella structure according to an embodiment of the present invention includes a first treatment tank which includes a plurality of inclined plates and is configured to pass water subject to treatment between the inclined plates adjacent to each other and a second treatment tank which is installed at a rear end of the first treatment tank to accommodate the water subject to treatment and into which bubbles are supplied, wherein the plurality of inclined plates include positive electrode plates and negative electrode plates that are alternately arranged, and the water subject to treatment passes between the positive electrode plate and the negative electrode plate.

Abstract: A water treatment apparatus using a lamella structure according to an embodiment of the present invention includes a first treatment tank which includes a plurality of inclined plates and is configured to pass water subject to treatment between the inclined plates adjacent to each other and a second treatment tank which is installed at a rear end of the first treatment tank to accommodate the water subject to treatment and into which bubbles are supplied, wherein the plurality of inclined plates include positive electrode plates and negative electrode plates that are alternately arranged, and the water subject to treatment passes between the positive electrode plate and the negative electrode plate.

Abstract: Provided is an apparatus for testing the performance of carbon dioxide sorbents, the apparatus including: a reactor accommodating carbon dioxide sorbents therein; an injection part coupled with the reactor and injecting a gas mixture containing carbon dioxide into the reactor; a reaction furnace which is maintained at a preset temperature and into which the reactor is inserted; a discharge part coupled with the reactor and discharging exhaust gas generated after a reaction of the gas mixture and the sorbents out from the reactor; and analysis part analyzing a carbon dioxide concentration of the exhaust gas discharged from the discharge part, wherein the reactor includes a reactor for wet-type carbon dioxide sorbents and a reactor for dry-type carbon dioxide sorbents, and the reactor for wet-type carbon dioxide sorbents and the reactor for dry-type carbon dioxide sorbents can be alternately inserted into the reaction furnace.