๋ฐค์˜ ๊ฐ€๋กœ๋“ฑ๊ณผ ์ถ•์ œ์šฉ ์ „๊ตฌ๊ฐ€ ๋น„์น˜๋Š” ๊ฑฐ๋ฆฌ