{"id":895,"date":"2026-03-23T17:15:46","date_gmt":"2026-03-23T17:15:46","guid":{"rendered":"https:\/\/www.visualize-ai.com\/vi\/data-flow-diagrams-academic-research\/"},"modified":"2026-03-23T17:15:46","modified_gmt":"2026-03-23T17:15:46","slug":"data-flow-diagrams-academic-research","status":"publish","type":"post","link":"https:\/\/www.visualize-ai.com\/vi\/data-flow-diagrams-academic-research\/","title":{"rendered":"S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt"},"content":{"rendered":"
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Nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o s\u1ef1 r\u00f5 r\u00e0ng, ch\u00ednh x\u00e1c v\u00e0 kh\u1ea3 n\u0103ng truy\u1ec1n \u0111\u1ea1t hi\u1ec7u qu\u1ea3 c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p. M\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd nh\u1ea5t m\u00e0 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u1ef1c quan h\u00f3a s\u1ef1 di chuy\u1ec3n c\u1ee7a th\u00f4ng tin l\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD). M\u1eb7c d\u00f9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m v\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng, nh\u01b0ng gi\u00e1 tr\u1ecb c\u1ee7a DFD kh\u00f4ng ch\u1ec9 gi\u1edbi h\u1ea1n \u1edf ph\u00e1t tri\u1ec3n k\u1ef9 thu\u1eadt. Trong l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt, nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y \u0111\u00f3ng vai tr\u00f2 nh\u01b0 b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf \u0111\u1ec3 hi\u1ec3u r\u00f5 c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thu th\u1eadp, x\u1eed l\u00fd, l\u01b0u tr\u1eef v\u00e0 ph\u00e2n ph\u1ed1i trong m\u1ed9t nghi\u00ean c\u1ee9u. D\u00f9 b\u1ea1n \u0111ang th\u1ef1c hi\u1ec7n ph\u00e2n t\u00edch \u0111\u1ecbnh l\u01b0\u1ee3ng, m\u1ed9t nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p \u0111\u1ecbnh t\u00ednh hay m\u1ed9t cu\u1ed9c \u0111i\u1ec1u tra k\u1ebft h\u1ee3p ph\u01b0\u01a1ng ph\u00e1p, m\u1ed9t s\u01a1 \u0111\u1ed3 DFD \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng t\u1ed1t c\u00f3 th\u1ec3 l\u00e0m s\u00e1ng t\u1ecf ki\u1ebfn tr\u00fac thi\u1ebft k\u1ebf nghi\u00ean c\u1ee9u c\u1ee7a b\u1ea1n.<\/p>\n

Vi\u1ec7c \u00e1p d\u1ee5ng DFD trong vi\u1ebft h\u1ecdc thu\u1eadt gi\u00fap l\u1ea5p \u0111\u1ea7y kho\u1ea3ng c\u00e1ch gi\u1eefa ph\u01b0\u01a1ng ph\u00e1p tr\u1eebu t\u01b0\u1ee3ng v\u00e0 th\u1ef1c thi c\u1ee5 th\u1ec3. B\u1eb1ng c\u00e1ch l\u1eadp b\u1ea3n \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m ngh\u1ebdn, \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u v\u00e0 cung c\u1ea5p cho ng\u01b0\u1eddi ph\u1ea3n bi\u1ec7n m\u1ed9t l\u1ed9 tr\u00ecnh r\u00f5 r\u00e0ng v\u1ec1 c\u00e1c quy tr\u00ecnh ph\u00e2n t\u00edch c\u1ee7a h\u1ecd. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u00e1c n\u1ec1n t\u1ea3ng l\u00fd thuy\u1ebft, c\u00e1c th\u00e0nh ph\u1ea7n c\u1ea5u tr\u00fac v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1eb7c bi\u1ec7t trong b\u1ed1i c\u1ea3nh nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt.<\/p>\n

Hi\u1ec3u r\u00f5 c\u00e1c n\u1ec1n t\u1ea3ng c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \ud83e\udde0<\/h2>\n

S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u qua m\u1ed9t h\u1ec7 th\u1ed1ng th\u00f4ng tin. Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3, v\u1ed1n t\u1eadp trung v\u00e0o logic v\u00e0 th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c, DFD t\u1eadp trung v\u00e0o ch\u00ednh d\u1eef li\u1ec7u. Ch\u00fang minh h\u1ecda ngu\u1ed3n g\u1ed1c d\u1eef li\u1ec7u, c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i, n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 n\u01a1i d\u1eef li\u1ec7u r\u1eddi kh\u1ecfi h\u1ec7 th\u1ed1ng. Trong b\u1ed1i c\u1ea3nh h\u1ecdc thu\u1eadt, \u201ch\u1ec7 th\u1ed1ng\u201d th\u01b0\u1eddng ch\u00ednh l\u00e0 d\u1ef1 \u00e1n nghi\u00ean c\u1ee9u c\u1ee7a b\u1ea1n.<\/p>\n

M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a DFD l\u00e0 cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan c\u1ea5p cao v\u1ec1 h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng b\u1ecb m\u1eafc k\u1eb9t v\u00e0o chi ti\u1ebft tri\u1ec3n khai. S\u1ef1 tr\u1eebu t\u01b0\u1ee3ng n\u00e0y \u0111\u1eb7c bi\u1ec7t c\u00f3 gi\u00e1 tr\u1ecb trong c\u00e1c b\u00e0i b\u00e1o nghi\u00ean c\u1ee9u, n\u01a1i tr\u1ecdng t\u00e2m c\u1ea7n n\u1eb1m \u1edf ph\u01b0\u01a1ng ph\u00e1p v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u thay v\u00ec ph\u1ea7n m\u1ec1m hay thu\u1eadt to\u00e1n c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. B\u1eb1ng c\u00e1ch lo\u1ea1i b\u1ecf c\u00e1c chi ti\u1ebft k\u1ef9 thu\u1eadt, m\u1ed9t DFD gi\u00fap ng\u01b0\u1eddi \u0111\u1ecdc n\u1eafm b\u1eaft nhanh ch\u00f3ng logic di chuy\u1ec3n d\u1eef li\u1ec7u.<\/p>\n

C\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a s\u01a1 \u0111\u1ed3 DFD nghi\u00ean c\u1ee9u \ud83d\udd17<\/h2>\n

\u0110\u1ec3 x\u00e2y d\u1ef1ng m\u1ed9t s\u01a1 \u0111\u1ed3 c\u00f3 \u00fd ngh\u0129a, ng\u01b0\u1eddi ta c\u1ea7n hi\u1ec3u b\u1ed1n k\u00fd hi\u1ec7u c\u01a1 b\u1ea3n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong k\u00fd hi\u1ec7u DFD chu\u1ea9n. C\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y lu\u00f4n gi\u1eef nguy\u00ean d\u00f9 \u1edf l\u0129nh v\u1ef1c n\u00e0o, d\u00f9 l\u00e0 nghi\u00ean c\u1ee9u k\u1ef9 thu\u1eadt hay khoa h\u1ecdc x\u00e3 h\u1ed9i.<\/p>\n

    \n
  • C\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i:<\/strong> Ch\u00fang \u0111\u1ea1i di\u1ec7n cho ngu\u1ed3n ho\u1eb7c \u0111i\u1ec3m \u0111\u1ebfn c\u1ee7a d\u1eef li\u1ec7u n\u1eb1m ngo\u00e0i ranh gi\u1edbi h\u1ec7 th\u1ed1ng. Trong nghi\u00ean c\u1ee9u, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 ng\u01b0\u1eddi tham gia kh\u1ea3o s\u00e1t, c\u01a1 s\u1edf d\u1eef li\u1ec7u ch\u00ednh ph\u1ee7 ho\u1eb7c m\u1ed9t m\u1ea3ng c\u1ea3m bi\u1ebfn. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh ch\u1eef nh\u1eadt.<\/li>\n
  • C\u00e1c qu\u00e1 tr\u00ecnh:<\/strong> Ch\u00fang l\u00e0 c\u00e1c h\u00e0nh \u0111\u1ed9ng bi\u1ebfn \u0111\u1ed5i d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o th\u00e0nh d\u1eef li\u1ec7u \u0111\u1ea7u ra. Trong b\u1ed1i c\u1ea3nh nghi\u00ean c\u1ee9u, m\u1ed9t qu\u00e1 tr\u00ecnh c\u00f3 th\u1ec3 l\u00e0 l\u00e0m s\u1ea1ch d\u1eef li\u1ec7u, ph\u00e2n t\u00edch th\u1ed1ng k\u00ea, m\u00e3 h\u00f3a ph\u1ea3n h\u1ed3i \u0111\u1ecbnh t\u00ednh ho\u1eb7c l\u1ecdc k\u1ebft qu\u1ea3 th\u1ef1c nghi\u1ec7m. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n b\u1eb1ng h\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt bo g\u00f3c.<\/li>\n
  • C\u00e1c kho d\u1eef li\u1ec7u:<\/strong> Ch\u00fang \u0111\u1ea1i di\u1ec7n cho nh\u1eefng n\u01a1i l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111\u1ec3 s\u1eed d\u1ee5ng sau n\u00e0y. Trong lu\u1eadn v\u0103n, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t kho l\u01b0u tr\u1eef v\u1eadt l\u00fd, m\u1ed9t kho d\u1eef li\u1ec7u s\u1ed1 ho\u1eb7c m\u1ed9t t\u1ec7p c\u01a1 s\u1edf d\u1eef li\u1ec7u. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c v\u1ebd d\u01b0\u1edbi d\u1ea1ng h\u00ecnh ch\u1eef nh\u1eadt h\u1edf hai \u0111\u1ea7u.<\/li>\n
  • C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u:<\/strong> Ch\u00fang ch\u1ec9 ra s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3, qu\u00e1 tr\u00ecnh v\u00e0 kho d\u1eef li\u1ec7u. C\u00e1c m\u0169i t\u00ean \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 th\u1ec3 hi\u1ec7n h\u01b0\u1edbng \u0111i. M\u1ed7i lu\u1ed3ng ph\u1ea3i c\u00f3 t\u00ean m\u00f4 t\u1ea3 th\u00f4ng tin \u0111ang \u0111\u01b0\u1ee3c chuy\u1ec3n, ch\u1eb3ng h\u1ea1n nh\u01b0 \u201cPh\u1ea3n h\u1ed3i kh\u1ea3o s\u00e1t\u201d ho\u1eb7c \u201cB\u1ed9 d\u1eef li\u1ec7u \u0111\u00e3 x\u1eed l\u00fd\u201d.<\/li>\n<\/ul>\n

    Khi thi\u1ebft k\u1ebf c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y cho m\u1ed9t b\u00e0i b\u00e1o nghi\u00ean c\u1ee9u, vi\u1ec7c duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n l\u00e0 \u0111i\u1ec1u r\u1ea5t quan tr\u1ecdng. N\u1ebfu m\u1ed9t bi\u1ebfn c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c g\u00e1n nh\u00e3n l\u00e0 \u201cM\u00e3 ng\u01b0\u1eddi tham gia\u201d trong kho d\u1eef li\u1ec7u, th\u00ec n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c g\u00e1n nh\u00e3n gi\u1ed1ng h\u1ec7t nh\u01b0 v\u1eady trong c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u k\u1ebft n\u1ed1i v\u1edbi n\u00f3. S\u1ef1 ch\u00ednh x\u00e1c n\u00e0y \u0111\u1ea3m b\u1ea3o ph\u1ea7n ph\u01b0\u01a1ng ph\u00e1p lu\u1eadn c\u1ee7a b\u00e0i b\u00e1o c\u1ee7a b\u1ea1n lu\u00f4n h\u1ee3p l\u00fd v\u1ec1 m\u1eb7t logic.<\/p>\n

    C\u00e1c m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng trong s\u01a1 \u0111\u1ed3 nghi\u00ean c\u1ee9u \ud83d\udcc9<\/h2>\n

    C\u00e1c d\u1ef1 \u00e1n nghi\u00ean c\u1ee9u ph\u1ee9c t\u1ea1p th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi nhi\u1ec1u m\u1ee9c \u0111\u1ed9 chi ti\u1ebft \u0111\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3u \u0111\u1ea7y \u0111\u1ee7. DFD \u0111\u00e1p \u1ee9ng \u0111i\u1ec1u n\u00e0y th\u00f4ng qua m\u1ed9t h\u1ec7 th\u1ed1ng c\u00e1c s\u01a1 \u0111\u1ed3 theo th\u1ee9 b\u1eadc, t\u1eeb c\u00e1i nh\u00ecn t\u1ed5ng quan c\u1ea5p cao \u0111\u1ebfn c\u00e1c ph\u00e2n t\u00edch chi ti\u1ebft. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c m\u1ee9c \u0111\u1ed9 n\u00e0y gi\u00fap c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u quy\u1ebft \u0111\u1ecbnh n\u00ean \u0111\u01b0a bao nhi\u00eau chi ti\u1ebft v\u00e0o b\u1ea3n c\u00f4ng b\u1ed1 cu\u1ed1i c\u00f9ng c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n
    M\u1ee9c \u0111\u1ed9<\/th>\nM\u00f4 t\u1ea3<\/th>\nV\u00ed d\u1ee5 s\u1eed d\u1ee5ng trong h\u1ecdc thu\u1eadt<\/th>\n<\/tr>\n
    M\u1ee9c \u0111\u1ed9 0 (S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh)<\/td>\nG\u00f3c nh\u00ecn c\u1ea5p cao nh\u1ea5t. Hi\u1ec3n th\u1ecb to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t v\u00e0 s\u1ef1 t\u01b0\u01a1ng t\u00e1c c\u1ee7a n\u00f3 v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i.<\/td>\nCung c\u1ea5p b\u1ea3n t\u00f3m t\u1eaft ph\u1ea1m vi nghi\u00ean c\u1ee9u trong ph\u1ea7n m\u1edf \u0111\u1ea7u.<\/td>\n<\/tr>\n
    M\u1ee9c \u0111\u1ed9 1<\/td>\nChia qu\u00e1 tr\u00ecnh ch\u00ednh th\u00e0nh c\u00e1c ti\u1ec3u qu\u00e1 tr\u00ecnh ch\u00ednh. Hi\u1ec3n th\u1ecb c\u00e1c \u0111\u01b0\u1eddng \u0111i d\u1eef li\u1ec7u ch\u00ednh.<\/td>\nTr\u00ecnh b\u00e0y c\u00e1c giai \u0111o\u1ea1n ch\u00ednh c\u1ee7a ph\u1ea7n ph\u01b0\u01a1ng ph\u00e1p lu\u1eadn.<\/td>\n<\/tr>\n
    M\u1ee9c \u0111\u1ed9 2<\/td>\nPh\u00e2n t\u00edch s\u00e2u h\u01a1n c\u00e1c qu\u00e1 tr\u00ecnh m\u1ee9c 1 th\u00e0nh c\u00e1c b\u01b0\u1edbc c\u1ee5 th\u1ec3.<\/td>\nT\u00e0i li\u1ec7u ph\u1ee5 l\u1ee5c cho logic chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u1ede nhi\u1ec1u t\u1ea1p ch\u00ed h\u1ecdc thu\u1eadt, s\u01a1 \u0111\u1ed3 m\u1ee9c 0 ho\u1eb7c m\u1ee9c 1 l\u00e0 \u0111\u1ee7. M\u1ee5c ti\u00eau l\u00e0 s\u1ef1 r\u00f5 r\u00e0ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt chi ti\u1ebft \u0111\u1ebfn m\u1ee9c t\u1ed1i \u0111a. Nh\u1eefng s\u01a1 \u0111\u1ed3 qu\u00e1 chi ti\u1ebft c\u00f3 th\u1ec3 l\u00e0m r\u1ed1i r\u1eafm b\u1ea3n th\u1ea3o v\u00e0 l\u00e0m m\u1ea5t t\u1eadp trung v\u00e0o c\u00e1c ph\u00e1t hi\u1ec7n ch\u00ednh. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi lu\u1eadn v\u0103n ho\u1eb7c lu\u1eadn \u00e1n k\u1ef9 thu\u1eadt, n\u01a1i ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng nghi\u00ean c\u1ee9u, s\u01a1 \u0111\u1ed3 m\u1ee9c 2 c\u00f3 th\u1ec3 l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 ch\u1ee9ng minh s\u1ef1 l\u00ean k\u1ebf ho\u1ea1ch nghi\u00eam ng\u1eb7t.<\/p>\n

    \u00c1p d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0o c\u00e1c ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u \ud83d\udd2c<\/h2>\n

    T\u00ednh linh ho\u1ea1t c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cho ph\u00e9p ch\u00fang \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u m\u00f4 h\u00ecnh nghi\u00ean c\u1ee9u kh\u00e1c nhau. C\u00e1ch x\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c nghi\u00ean c\u1ee9u \u0111\u00f3 l\u00e0 \u0111\u1ecbnh l\u01b0\u1ee3ng, \u0111\u1ecbnh t\u00ednh hay k\u1ebft h\u1ee3p ph\u01b0\u01a1ng ph\u00e1p.<\/p>\n

    Nghi\u00ean c\u1ee9u \u0111\u1ecbnh l\u01b0\u1ee3ng<\/h3>\n

    Trong c\u00e1c nghi\u00ean c\u1ee9u \u0111\u1ecbnh l\u01b0\u1ee3ng, tr\u1ecdng t\u00e2m th\u01b0\u1eddng n\u1eb1m \u1edf vi\u1ec7c t\u1ed5ng h\u1ee3p d\u1eef li\u1ec7u v\u00e0 thao t\u00e1c th\u1ed1ng k\u00ea. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u1edf \u0111\u00e2y gi\u00fap tr\u1ef1c quan h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u t\u1eeb vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u th\u00f4 \u0111\u1ebfn \u0111\u1ea7u ra th\u1ed1ng k\u00ea cu\u1ed1i c\u00f9ng. V\u00ed d\u1ee5, trong m\u1ed9t nghi\u00ean c\u1ee9u ph\u00e2n t\u00edch xu h\u01b0\u1edbng kinh t\u1ebf, s\u01a1 \u0111\u1ed3 c\u00f3 th\u1ec3 minh h\u1ecda d\u1eef li\u1ec7u ch\u1ea3y t\u1eeb c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u ch\u00ednh ph\u1ee7 v\u00e0o kho l\u01b0u tr\u1eef trung t\u00e2m, \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch b\u1edfi m\u1ed9t quy tr\u00ecnh c\u1ee5 th\u1ec3, r\u1ed3i ch\u1ea3y v\u00e0o b\u1ed9 ph\u1eadn ph\u00e2n t\u00edch th\u1ed1ng k\u00ea.<\/p>\n

    Vi\u1ec7c tr\u1ef1c quan h\u00f3a n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch \u0111\u1ec3 minh h\u1ecda c\u00e1c quy tr\u00ecnh l\u00e0m s\u1ea1ch d\u1eef li\u1ec7u. C\u00e1c nh\u00e0 ph\u1ea3n bi\u1ec7n th\u01b0\u1eddng \u0111\u1eb7t c\u00e2u h\u1ecfi v\u1ec1 c\u00e1ch x\u1eed l\u00fd d\u1eef li\u1ec7u th\u00f4. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u th\u1ec3 hi\u1ec7n r\u00f5 r\u00e0ng c\u00e1c b\u01b0\u1edbc \u0111\u00e3 th\u1ef1c hi\u1ec7n \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c gi\u00e1 tr\u1ecb ngo\u1ea1i l\u1ec7 ho\u1eb7c x\u1eed l\u00fd c\u00e1c gi\u00e1 tr\u1ecb thi\u1ebfu, t\u1eeb \u0111\u00f3 t\u0103ng th\u00eam t\u00ednh minh b\u1ea1ch cho ph\u00e2n t\u00edch \u0111\u1ecbnh l\u01b0\u1ee3ng.<\/p>\n

    Nghi\u00ean c\u1ee9u \u0111\u1ecbnh t\u00ednh<\/h3>\n

    Nghi\u00ean c\u1ee9u \u0111\u1ecbnh t\u00ednh x\u1eed l\u00fd d\u1eef li\u1ec7u phi s\u1ed1, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ea3n ghi ph\u1ecfng v\u1ea5n ho\u1eb7c ghi ch\u00fa th\u1ef1c \u0111\u1ecba. M\u1eb7c d\u00f9 \u00edt c\u1ea5u tr\u00fac h\u01a1n d\u1eef li\u1ec7u \u0111\u1ecbnh l\u01b0\u1ee3ng, nh\u01b0ng lu\u1ed3ng d\u1eef li\u1ec7u v\u1eabn t\u1ed3n t\u1ea1i. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 m\u00f4 t\u1ea3 h\u00e0nh tr\u00ecnh c\u1ee7a b\u1ea3n ghi ph\u1ecfng v\u1ea5n t\u1eeb l\u00fac ghi \u00e2m \u0111\u1ebfn m\u00e3 h\u00f3a.<\/p>\n

    C\u00e1c quy tr\u00ecnh trong b\u1ed1i c\u1ea3nh n\u00e0y c\u00f3 th\u1ec3 bao g\u1ed3m \u201cChuy\u1ec3n v\u0103n b\u1ea3n\u201d, \u201cLo\u1ea1i b\u1ecf th\u00f4ng tin nh\u1eadn d\u1ea1ng\u201d, \u201cM\u00e3 h\u00f3a ch\u1ee7 \u0111\u1ec1\u201d v\u00e0 \u201cT\u1ed5ng h\u1ee3p th\u1ec3 lo\u1ea1i\u201d. C\u00e1c kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u s\u1ebd \u0111\u1ea1i di\u1ec7n cho c\u00e1c th\u01b0 m\u1ee5c ch\u1ee9a \u00e2m thanh th\u00f4, v\u0103n b\u1ea3n \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch v\u00e0 c\u00e1c ch\u1ee7 \u0111\u1ec1 \u0111\u00e3 \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u bi\u1ec7n minh cho khung m\u00e3 h\u00f3a c\u1ee7a m\u00ecnh v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u00e0nh tr\u00ecnh t\u1eeb quan s\u00e1t th\u00f4 \u0111\u1ebfn l\u00fd thuy\u1ebft cu\u1ed1i c\u00f9ng l\u00e0 c\u00f3 th\u1ec3 truy v\u1ebft \u0111\u01b0\u1ee3c.<\/p>\n

    Nghi\u00ean c\u1ee9u k\u1ebft h\u1ee3p ph\u01b0\u01a1ng ph\u00e1p<\/h3>\n

    C\u00e1c nghi\u00ean c\u1ee9u k\u1ebft h\u1ee3p ph\u01b0\u01a1ng ph\u00e1p k\u1ebft h\u1ee3p c\u1ea3 ti\u1ebfp c\u1eadn \u0111\u1ecbnh l\u01b0\u1ee3ng v\u00e0 \u0111\u1ecbnh t\u00ednh. Nh\u1eefng d\u1ef1 \u00e1n n\u00e0y th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn c\u00e1c \u0111i\u1ec3m t\u00edch h\u1ee3p d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00f4 c\u00f9ng qu\u00fd gi\u00e1 trong vi\u1ec7c minh h\u1ecda n\u01a1i v\u00e0 c\u00e1ch hai b\u1ed9 d\u1eef li\u1ec7u n\u00e0y giao nhau. V\u00ed d\u1ee5, n\u00f3 c\u00f3 th\u1ec3 minh h\u1ecda c\u00e1ch k\u1ebft qu\u1ea3 kh\u1ea3o s\u00e1t (\u0111\u1ecbnh l\u01b0\u1ee3ng) h\u1ed7 tr\u1ee3 vi\u1ec7c l\u1ef1a ch\u1ecdn ng\u01b0\u1eddi tham gia ph\u1ecfng v\u1ea5n (\u0111\u1ecbnh t\u00ednh), v\u00e0 c\u00e1ch c\u00e1c k\u1ebft qu\u1ea3 t\u1eeb c\u1ea3 hai lu\u1ed3ng n\u00e0y h\u1ed9i t\u1ee5 \u0111\u1ec3 h\u00ecnh th\u00e0nh k\u1ebft lu\u1eadn cu\u1ed1i c\u00f9ng.<\/p>\n

    C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ec3 tr\u1ef1c quan h\u00f3a d\u1eef li\u1ec7u nghi\u00ean c\u1ee9u \ud83c\udfa8<\/h2>\n

    Vi\u1ec7c t\u1ea1o ra m\u1ed9t s\u01a1 \u0111\u1ed3 ch\u1ea5t l\u01b0\u1ee3ng chuy\u00ean nghi\u1ec7p \u0111\u00f2i h\u1ecfi tu\u00e2n th\u1ee7 c\u00e1c nguy\u00ean t\u1eafc thi\u1ebft k\u1ebf c\u1ee5 th\u1ec3. Nh\u1eefng th\u1ef1c h\u00e0nh n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00f4ng c\u1ee5 tr\u1ef1c quan h\u1ed7 tr\u1ee3 v\u0103n b\u1ea3n thay v\u00ec l\u00e0m ng\u01b0\u1eddi \u0111\u1ecdc b\u1ed1i r\u1ed1i.<\/p>\n

      \n
    • T\u00ednh nh\u1ea5t qu\u00e1n trong \u0111\u1eb7t t\u00ean:<\/strong> M\u1ed7i lu\u1ed3ng d\u1eef li\u1ec7u, quy tr\u00ecnh v\u00e0 th\u1ef1c th\u1ec3 \u0111\u1ec1u ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean r\u00f5 r\u00e0ng. Tr\u00e1nh d\u00f9ng vi\u1ebft t\u1eaft tr\u1eeb khi ch\u00fang l\u00e0 chu\u1ea9n trong l\u0129nh v\u1ef1c c\u1ee7a b\u1ea1n. D\u00f9ng danh t\u1eeb cho kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u00e0 \u0111\u1ed9ng t\u1eeb cho c\u00e1c quy tr\u00ecnh.<\/li>\n
    • \u0110\u1ed9 ph\u1ee9c t\u1ea1p c\u00e2n b\u1eb1ng:<\/strong> M\u1ed9t s\u01a1 \u0111\u1ed3 duy nh\u1ea5t kh\u00f4ng n\u00ean ch\u1ee9a qu\u00e1 nhi\u1ec1u th\u00e0nh ph\u1ea7n. N\u1ebfu s\u01a1 \u0111\u1ed3 c\u1ea5p 1 tr\u1edf n\u00ean r\u1ed1i r\u1eafm v\u1edbi h\u01a1n 7 \u0111\u1ebfn 9 quy tr\u00ecnh, h\u00e3y c\u00e2n nh\u1eafc chia nh\u1ecf th\u00e0nh nhi\u1ec1u s\u01a1 \u0111\u1ed3 con.<\/li>\n
    • Kh\u00f4ng c\u00f3 giao nhau:<\/strong> H\u00e3y s\u1eafp x\u1ebfp s\u01a1 \u0111\u1ed3 sao cho c\u00e1c \u0111\u01b0\u1eddng lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng giao nhau m\u1ed9t c\u00e1ch kh\u00f4ng c\u1ea7n thi\u1ebft. \u0110i\u1ec1u n\u00e0y c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng \u0111\u1ecdc. N\u1ebfu vi\u1ec7c giao nhau l\u00e0 kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi, h\u00e3y s\u1eed d\u1ee5ng k\u00fd hi\u1ec7u v\u01b0\u1ee3t qua.<\/li>\n
    • Lu\u1ed3ng logic:<\/strong> \u0110\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ecdc t\u1eeb tr\u00e1i sang ph\u1ea3i ho\u1eb7c t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi. \u0110i\u1ec1u n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi th\u00f3i quen \u0111\u1ecdc ti\u00eau chu\u1ea9n v\u00e0 gi\u1ea3m t\u1ea3i nh\u1eadn th\u1ee9c.<\/li>\n
    • Tham chi\u1ebfu \u0111\u1ebfn v\u0103n b\u1ea3n:<\/strong> M\u1ed7i s\u01a1 \u0111\u1ed3 \u0111\u1ec1u ph\u1ea3i \u0111\u01b0\u1ee3c tham chi\u1ebfu trong v\u0103n b\u1ea3n. Kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u m\u00e0 kh\u00f4ng gi\u1ea3i th\u00edch n\u00f3 \u0111\u1ea1i di\u1ec7n cho \u0111i\u1ec1u g\u00ec. Ch\u00fa th\u00edch ph\u1ea3i mang t\u00ednh m\u00f4 t\u1ea3, v\u00ed d\u1ee5 nh\u01b0 \u201cH\u00ecnh 1: S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a quy tr\u00ecnh th\u00ed nghi\u1ec7m\u201d.<\/li>\n<\/ul>\n

      Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh \u26a0\ufe0f<\/h2>\n

      Ngay c\u1ea3 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u00f3 kinh nghi\u1ec7m c\u0169ng c\u00f3 th\u1ec3 m\u1eafc sai l\u1ea7m khi tr\u1ef1c quan h\u00f3a ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a m\u00ecnh. Vi\u1ec7c nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn n\u00e0y c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m th\u1eddi gian trong qu\u00e1 tr\u00ecnh ch\u1ec9nh s\u1eeda.<\/p>\n

        \n
      • L\u1ed7 \u0111en:<\/strong> \u0110i\u1ec1u n\u00e0y x\u1ea3y ra khi m\u1ed9t quy tr\u00ecnh c\u00f3 \u0111\u1ea7u v\u00e0o nh\u01b0ng kh\u00f4ng c\u00f3 \u0111\u1ea7u ra. Trong b\u1ed1i c\u1ea3nh nghi\u00ean c\u1ee9u, \u0111i\u1ec1u n\u00e0y ng\u1ee5 \u00fd d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thu th\u1eadp r\u1ed3i bi\u1ebfn m\u1ea5t m\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch hay l\u01b0u tr\u1eef. M\u1ed7i quy tr\u00ecnh \u0111\u1ec1u ph\u1ea3i t\u1ea1o ra k\u1ebft qu\u1ea3 n\u00e0o \u0111\u00f3.<\/li>\n
      • B\u01b0\u1edbm \u0111\u00eam:<\/strong> \u0110\u00e2y l\u00e0 \u0111i\u1ec1u ng\u01b0\u1ee3c l\u1ea1i v\u1edbi l\u1ed7 \u0111en. N\u00f3 x\u1ea3y ra khi m\u1ed9t quy tr\u00ecnh c\u00f3 \u0111\u1ea7u ra nh\u01b0ng kh\u00f4ng c\u00f3 \u0111\u1ea7u v\u00e0o. \u0110i\u1ec1u n\u00e0y ng\u1ee5 \u00fd d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb h\u01b0 kh\u00f4ng, \u0111i\u1ec1u m\u00e0 v\u1ec1 m\u1eb7t logic l\u00e0 kh\u00f4ng th\u1ec3 x\u1ea3y ra trong m\u1ed9t nghi\u00ean c\u1ee9u d\u1ef1a tr\u00ean d\u1eef li\u1ec7u.<\/li>\n
      • \u0110\u1ed9 chi ti\u1ebft kh\u00f4ng nh\u1ea5t qu\u00e1n:<\/strong> Vi\u1ec7c tr\u1ed9n l\u1eabn c\u00e1c kh\u00e1i ni\u1ec7m c\u1ea5p cao v\u1edbi c\u00e1c chi ti\u1ebft c\u1ea5p th\u1ea5p trong c\u00f9ng m\u1ed9t s\u01a1 \u0111\u1ed3 c\u00f3 th\u1ec3 g\u00e2y nh\u1ea7m l\u1eabn. N\u1ebfu m\u1ed9t quy tr\u00ecnh l\u00e0 \u201cThu th\u1eadp d\u1eef li\u1ec7u\u201d, \u0111\u1eebng t\u1ea1o m\u1ed9t quy tr\u00ecnh kh\u00e1c l\u00e0 \u201cNh\u1eadp ng\u00e0y v\u00e0o tr\u01b0\u1eddng A\u201d. H\u00e3y gi\u1eef m\u1ee9c \u0111\u1ed9 chi ti\u1ebft \u0111\u1ed3ng nh\u1ea5t.<\/li>\n
      • Thi\u1ebfu kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u:<\/strong> \u0110\u00f4i khi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u qu\u00ean m\u1ea5t vi\u1ec7c th\u1ec3 hi\u1ec7n n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u gi\u1eefa c\u00e1c quy tr\u00ecnh. Trong c\u00e1c nghi\u00ean c\u1ee9u theo chi\u1ec1u d\u00e0i th\u1eddi gian, vi\u1ec7c l\u01b0u tr\u1eef d\u1eef li\u1ec7u l\u00e0 r\u1ea5t quan tr\u1ecdng. \u0110\u1ea3m b\u1ea3o c\u00f3 m\u1ed9t h\u00e0nh tr\u00ecnh r\u00f5 r\u00e0ng t\u1eeb thu th\u1eadp \u0111\u1ebfn l\u01b0u tr\u1eef r\u1ed3i \u0111\u1ebfn ph\u00e2n t\u00edch.<\/li>\n<\/ul>\n

        T\u00edch h\u1ee3p s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0o b\u1ea3n th\u1ea3o \ud83d\udcdd<\/h2>\n

        Bi\u1ec3u \u0111\u1ed3 n\u00ean xu\u1ea5t hi\u1ec7n \u1edf \u0111\u00e2u trong b\u00e0i b\u00e1o c\u1ee7a b\u1ea1n? V\u1ecb tr\u00ed \u0111\u1eb7t bi\u1ec3u \u0111\u1ed3 ph\u1ee5 thu\u1ed9c v\u00e0o h\u01b0\u1edbng d\u1eabn c\u1ee7a t\u1ea1p ch\u00ed v\u00e0 b\u1ea3n ch\u1ea5t c\u1ee7a nghi\u00ean c\u1ee9u. Th\u00f4ng th\u01b0\u1eddng, ph\u1ea7n ph\u01b0\u01a1ng ph\u00e1p l\u00e0 v\u1ecb tr\u00ed ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n

        N\u1ebfu bi\u1ec3u \u0111\u1ed3 l\u00e0 trung t\u00e2m \u0111\u1ec3 hi\u1ec3u nghi\u00ean c\u1ee9u, n\u00f3 c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n s\u1edbm trong ph\u1ea7n ph\u01b0\u01a1ng ph\u00e1p, theo sau l\u00e0 ph\u1ea7n gi\u1ea3i th\u00edch v\u0103n b\u1ea3n chi ti\u1ebft. N\u1ebfu bi\u1ec3u \u0111\u1ed3 h\u1ed7 tr\u1ee3 m\u1ed9t ph\u1ea7n ph\u1ee5 c\u1ee5 th\u1ec3, ch\u1eb3ng h\u1ea1n nh\u01b0 ti\u1ec1n x\u1eed l\u00fd d\u1eef li\u1ec7u, th\u00ec n\u00f3 n\u00ean \u0111\u01b0\u1ee3c nh\u00fang ngay trong ph\u1ea7n ph\u1ee5 \u0111\u00f3.<\/p>\n

        Khi m\u00f4 t\u1ea3 bi\u1ec3u \u0111\u1ed3 trong v\u0103n b\u1ea3n, \u0111\u1eebng \u0111\u01a1n gi\u1ea3n l\u1eb7p l\u1ea1i nh\u1eefng g\u00ec hi\u1ec3n th\u1ecb. Thay v\u00e0o \u0111\u00f3, h\u00e3y gi\u1ea3i th\u00edch v\u1ec1 t\u1ea1i sao<\/em>. T\u1ea1i sao l\u1ea1i ch\u1ecdn quy tr\u00ecnh c\u1ee5 th\u1ec3 n\u00e0y? T\u1ea1i sao d\u1eef li\u1ec7u l\u1ea1i ch\u1ea3y theo h\u01b0\u1edbng n\u00e0y? \u0110i\u1ec1u n\u00e0y mang l\u1ea1i chi\u1ec1u s\u00e2u ph\u00e2n t\u00edch cho bi\u1ec3u di\u1ec5n tr\u1ef1c quan. V\u00ed d\u1ee5: \u201cD\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn \u0111\u1ebfn kho l\u01b0u tr\u1eef x\u00e1c th\u1ef1c tr\u01b0\u1edbc khi ph\u00e2n t\u00edch \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n, nh\u01b0 \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong H\u00ecnh 1. B\u01b0\u1edbc n\u00e0y ng\u0103n c\u1ea3n c\u00e1c b\u1ea3n ghi b\u1ecb l\u1ed7i \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u00f4 h\u00ecnh th\u1ed1ng k\u00ea.\u201d<\/p>\n

        \u0110\u1ea3m b\u1ea3o quy\u1ec1n ri\u00eang t\u01b0 d\u1eef li\u1ec7u v\u00e0 \u0111\u1ea1o \u0111\u1ee9c trong c\u00e1c s\u01a1 \u0111\u1ed3 \ud83d\udd12<\/h2>\n

        Nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt b\u1ecb r\u00e0ng bu\u1ed9c b\u1edfi c\u00e1c nguy\u00ean t\u1eafc \u0111\u1ea1o \u0111\u1ee9c, \u0111\u1eb7c bi\u1ec7t l\u00e0 li\u00ean quan \u0111\u1ebfn d\u1eef li\u1ec7u ng\u01b0\u1eddi tham gia. Khi t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cho m\u1ed9t nghi\u00ean c\u1ee9u li\u00ean quan \u0111\u1ebfn \u0111\u1ed1i t\u01b0\u1ee3ng con ng\u01b0\u1eddi, c\u1ea7n c\u1ea9n tr\u1ecdng \u0111\u1ec3 kh\u00f4ng ti\u1ebft l\u1ed9 th\u00f4ng tin nh\u1ea1y c\u1ea3m.<\/p>\n

        \u0110\u1eebng g\u00e1n nh\u00e3n c\u00e1c kho l\u01b0u tr\u1eef d\u1eef li\u1ec7u b\u1eb1ng c\u00e1c \u0111\u1ecbnh danh c\u1ee5 th\u1ec3 nh\u01b0 \u201cPatient_Name_DB\u201d. Thay v\u00e0o \u0111\u00f3, h\u00e3y d\u00f9ng c\u00e1c thu\u1eadt ng\u1eef chung nh\u01b0 \u201cB\u1ea3n ghi \u0111\u00e3 \u1ea9n danh\u201d. N\u1ebfu bi\u1ec3u \u0111\u1ed3 nh\u1eb1m m\u1ee5c \u0111\u00edch c\u00f4ng b\u1ed1 c\u00f4ng khai, h\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng n\u00f3 kh\u00f4ng v\u00f4 t\u00ecnh ti\u1ebft l\u1ed9 c\u1ea5u tr\u00fac c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u s\u1edf h\u1eefu ho\u1eb7c c\u00e1c tuy\u1ebfn \u0111\u01b0\u1eddng c\u1ee5 th\u1ec3 c\u1ee7a th\u00f4ng tin nh\u1ea1y c\u1ea3m.<\/p>\n

        H\u01a1n n\u1eefa, ch\u00ednh bi\u1ec3u \u0111\u1ed3 c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t danh s\u00e1ch ki\u1ec3m tra \u0111\u1ea1o \u0111\u1ee9c. N\u1ebfu m\u1ed9t lu\u1ed3ng d\u1eef li\u1ec7u cho th\u1ea5y th\u00f4ng tin ng\u01b0\u1eddi tham gia di chuy\u1ec3n \u0111\u1ebfn kho l\u01b0u tr\u1eef c\u00f4ng c\u1ed9ng m\u00e0 kh\u00f4ng c\u00f3 qu\u00e1 tr\u00ecnh \u1ea9n danh, nh\u00e0 nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n kho\u1ea3ng tr\u1ed1ng \u0111\u1ea1o \u0111\u1ee9c n\u00e0y tr\u01b0\u1edbc khi n\u1ed9p b\u00e0i. T\u00ednh tr\u1ef1c quan c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u gi\u00fap d\u1ec5 d\u00e0ng ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 ti\u1ec1m \u1ea9n v\u1ec1 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh b\u1ea3o v\u1ec7 d\u1eef li\u1ec7u.<\/p>\n

        C\u00e1c c\u00f4ng c\u1ee5 t\u1ea1o d\u1ef1ng (c\u00e1c ph\u01b0\u01a1ng ph\u00e1p chung) \ud83d\udee0\ufe0f<\/h2>\n

        Vi\u1ec7c t\u1ea1o c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y \u0111\u00f2i h\u1ecfi m\u1ed9t tr\u00ecnh ch\u1ec9nh s\u1eeda \u0111\u1ed3 h\u1ecda. C\u00f3 r\u1ea5t nhi\u1ec1u l\u1ef1a ch\u1ecdn s\u1eb5n s\u00e0ng m\u00e0 kh\u00f4ng c\u1ea7n gi\u1ea5y ph\u00e9p ph\u1ea7n m\u1ec1m \u0111\u1ed9c quy\u1ec1n. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u th\u01b0\u1eddng d\u00f9ng c\u00e1c c\u00f4ng c\u1ee5 v\u1ebd d\u1ef1a tr\u00ean vector \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o h\u00ecnh \u1ea3nh v\u1eabn s\u1eafc n\u00e9t khi in trong c\u00e1c t\u1ea1p ch\u00ed.<\/p>\n

        T\u1eadp trung v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 c\u00e1c h\u00ecnh d\u1ea1ng chu\u1ea9n v\u00e0 cho ph\u00e9p xu\u1ea5t d\u1ec5 d\u00e0ng \u1edf \u0111\u1ecbnh d\u1ea1ng \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao nh\u01b0 PNG ho\u1eb7c SVG. Lo\u1ea1i ph\u1ea7n m\u1ec1m c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c d\u00f9ng quan tr\u1ecdng \u00edt h\u01a1n so v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a s\u01a1 \u0111\u1ed3. Tuy nhi\u00ean, h\u00e3y \u0111\u1ea3m b\u1ea3o c\u00f4ng c\u1ee5 \u0111\u00f3 h\u1ed7 tr\u1ee3 ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n, v\u00ec c\u00e1c ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u th\u01b0\u1eddng thay \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh nghi\u00ean c\u1ee9u. Vi\u1ec7c l\u01b0u tr\u1eef l\u1ecbch s\u1eed thay \u0111\u1ed5i s\u1ebd gi\u00fap ghi ch\u00e9p qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n c\u1ee7a thi\u1ebft k\u1ebf nghi\u00ean c\u1ee9u.<\/p>\n

        Vai tr\u00f2 c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong \u0111\u00e1nh gi\u00e1 ngang h\u00e0ng v\u00e0 t\u00e1i hi\u1ec7n \ud83d\udd0d<\/h2>\n

        M\u1ed9t trong nh\u1eefng th\u00e1ch th\u1ee9c l\u1edbn nh\u1ea5t trong khoa h\u1ecdc hi\u1ec7n \u0111\u1ea1i l\u00e0 kh\u1ea3 n\u0103ng t\u00e1i hi\u1ec7n. M\u1ed9t nh\u00e0 \u0111\u00e1nh gi\u00e1 ngang h\u00e0ng kh\u00f4ng th\u1ec3 t\u00e1i hi\u1ec7n nghi\u00ean c\u1ee9u n\u1ebfu c\u00e1c b\u01b0\u1edbc x\u1eed l\u00fd d\u1eef li\u1ec7u m\u01a1 h\u1ed3. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cung c\u1ea5p c\u00e1ch th\u1ee9c chu\u1ea9n h\u00f3a \u0111\u1ec3 ghi ch\u00e9p c\u00e1c b\u01b0\u1edbc n\u00e0y.<\/p>\n

        Khi m\u1ed9t nh\u00e0 \u0111\u00e1nh gi\u00e1 xem x\u00e9t b\u1ea3n th\u1ea3o c\u1ee7a b\u1ea1n, h\u1ecd c\u00f3 th\u1ec3 theo d\u00f5i \u0111\u01b0\u1eddng \u0111i c\u1ee7a d\u1eef li\u1ec7u tr\u00ean s\u01a1 \u0111\u1ed3. N\u1ebfu v\u0103n b\u1ea3n kh\u1eb3ng \u0111\u1ecbnh d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a, nh\u01b0ng s\u01a1 \u0111\u1ed3 l\u1ea1i cho th\u1ea5y d\u1eef li\u1ec7u th\u00f4 ch\u1ea3y tr\u1ef1c ti\u1ebfp \u0111\u1ebfn qu\u00e1 tr\u00ecnh ph\u00e2n t\u00edch, nh\u00e0 \u0111\u00e1nh gi\u00e1 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ngay s\u1ef1 m\u00e2u thu\u1eabn. T\u00ednh minh b\u1ea1ch n\u00e0y x\u00e2y d\u1ef1ng ni\u1ec1m tin gi\u1eefa nh\u00e0 nghi\u00ean c\u1ee9u v\u00e0 c\u1ed9ng \u0111\u1ed3ng khoa h\u1ecdc.<\/p>\n

        Trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 khoa h\u1ecdc d\u1eef li\u1ec7u v\u00e0 khoa h\u1ecdc m\u00e1y t\u00ednh, \u0111\u00e2y l\u00e0 th\u1ef1c h\u00e0nh chu\u1ea9n. Trong c\u00e1c l\u0129nh v\u1ef1c khoa h\u1ecdc x\u00e3 h\u1ed9i v\u00e0 nh\u00e2n v\u0103n, vi\u1ec7c \u00e1p d\u1ee5ng \u0111ang t\u0103ng nh\u01b0ng v\u1eabn c\u00f2n b\u1ecb b\u1ecf qu\u00ean. Vi\u1ec7c t\u00edch h\u1ee3p s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 mang l\u1ea1i l\u1ee3i th\u1ebf r\u00f5 r\u1ec7t cho nghi\u00ean c\u1ee9u c\u1ee7a b\u1ea1n b\u1eb1ng c\u00e1ch th\u1ec3 hi\u1ec7n m\u1ee9c \u0111\u1ed9 nghi\u00eam ng\u1eb7t v\u1ec1 ph\u01b0\u01a1ng ph\u00e1p lu\u1eadn.<\/p>\n

        Xu h\u01b0\u1edbng t\u01b0\u01a1ng lai trong tr\u1ef1c quan h\u00f3a nghi\u00ean c\u1ee9u \ud83d\ude80<\/h2>\n

        Khi nghi\u00ean c\u1ee9u ng\u00e0y c\u00e0ng tr\u1edf n\u00ean \u0111a ng\u00e0nh, nhu c\u1ea7u v\u1ec1 tr\u1ef1c quan h\u00f3a r\u00f5 r\u00e0ng ng\u00e0y c\u00e0ng t\u0103ng. C\u00e1c s\u01a1 \u0111\u1ed3 t\u01b0\u01a1ng t\u00e1c \u0111ang tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n trong c\u00e1c t\u1ea1p ch\u00ed s\u1ed1. D\u00f9 h\u00ecnh \u1ea3nh t\u0129nh v\u1eabn l\u00e0 chu\u1ea9n m\u1ef1c, ti\u1ec1m n\u0103ng cho c\u00e1c s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ed9ng li\u00ean k\u1ebft v\u1edbi t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u ho\u1eb7c kho m\u00e3 ngu\u1ed3n \u0111ang d\u1ea7n xu\u1ea5t hi\u1ec7n.<\/p>\n

        Ngay c\u1ea3 trong c\u00e1c c\u00f4ng b\u1ed1 t\u0129nh, c\u00e1c nguy\u00ean t\u1eafc tr\u1ef1c quan h\u00f3a d\u1eef li\u1ec7u r\u00f5 r\u00e0ng v\u1eabn \u00e1p d\u1ee5ng. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u n\u00ean c\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean c\u00e1c quy \u01b0\u1edbc m\u1edbi nh\u1ea5t v\u1ec1 v\u1ebd s\u01a1 \u0111\u1ed3. M\u1ed9t s\u1ed1 t\u1ea1p ch\u00ed hi\u1ec7n nay \u0111\u00e3 c\u00f3 h\u01b0\u1edbng d\u1eabn phong c\u00e1ch c\u1ee5 th\u1ec3 cho h\u00ecnh \u1ea3nh v\u00e0 s\u01a1 \u0111\u1ed3. Tu\u00e2n th\u1ee7 c\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0y \u0111\u1ea3m b\u1ea3o c\u00f4ng tr\u00ecnh c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn v\u00e0 tr\u00ecnh b\u00e0y m\u1ed9t c\u00e1ch chuy\u00ean nghi\u1ec7p.<\/p>\n

        T\u00f3m t\u1eaft c\u00e1c b\u01b0\u1edbc tri\u1ec3n khai \u2705<\/h2>\n

        \u0110\u1ec3 t\u00edch h\u1ee3p th\u00e0nh c\u00f4ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0o c\u00f4ng tr\u00ecnh h\u1ecdc thu\u1eadt c\u1ee7a b\u1ea1n, h\u00e3y tu\u00e2n theo tr\u00ecnh t\u1ef1 h\u1ee3p l\u00fd sau:<\/p>\n

          \n
        1. X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi:<\/strong> X\u00e1c \u0111\u1ecbnh ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng nghi\u00ean c\u1ee9u c\u1ee7a b\u1ea1n. \u0110i\u1ec1u g\u00ec \u0111\u01b0\u1ee3c bao g\u1ed3m v\u00e0 \u0111i\u1ec1u g\u00ec n\u1eb1m ngo\u00e0i?<\/li>\n
        2. X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3:<\/strong> Li\u1ec7t k\u00ea t\u1ea5t c\u1ea3 c\u00e1c ngu\u1ed3n v\u00e0 \u0111\u00edch \u0111\u1ebfn c\u1ee7a d\u1eef li\u1ec7u.<\/li>\n
        3. B\u1ea3n \u0111\u1ed3 h\u00f3a c\u00e1c qu\u00e1 tr\u00ecnh:<\/strong> V\u1ebd kh\u00e1i qu\u00e1t c\u00e1c b\u01b0\u1edbc bi\u1ebfn \u0111\u1ed5i m\u00e0 d\u1eef li\u1ec7u tr\u1ea3i qua.<\/li>\n
        4. X\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed l\u01b0u tr\u1eef:<\/strong> Quy\u1ebft \u0111\u1ecbnh n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u gi\u1eefa c\u00e1c b\u01b0\u1edbc.<\/li>\n
        5. V\u1ebd c\u00e1c lu\u1ed3ng:<\/strong> K\u1ebft n\u1ed1i c\u00e1c th\u00e0nh ph\u1ea7n b\u1eb1ng c\u00e1c m\u0169i t\u00ean c\u00f3 nh\u00e3n.<\/li>\n
        6. X\u00e1c minh:<\/strong> Ki\u1ec3m tra c\u00e1c l\u1ed7 \u0111en, \u0111i\u1ec3m s\u00e1ng (fireflies), v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n.<\/li>\n
        7. T\u00edch h\u1ee3p:<\/strong> \u0110\u1eb7t s\u01a1 \u0111\u1ed3 v\u00e0o b\u1ea3n th\u1ea3o v\u1edbi ch\u00fa th\u00edch v\u00e0 tr\u00edch d\u1eabn ph\u00f9 h\u1ee3p.<\/li>\n<\/ol>\n

          B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac n\u00e0y, b\u1ea1n \u0111\u1ea3m b\u1ea3o r\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a m\u00ecnh kh\u00f4ng ch\u1ec9 h\u1ee3p l\u00fd m\u00e0 c\u00f2n d\u1ec5 truy\u1ec1n \u0111\u1ea1t. C\u00f4ng s\u1ee9c b\u1ecf ra \u0111\u1ec3 t\u1ea1o ra m\u1ed9t s\u01a1 \u0111\u1ed3 ch\u00ednh x\u00e1c s\u1ebd mang l\u1ea1i l\u1ee3i \u00edch l\u1edbn cho \u0111\u1ed9 r\u00f5 r\u00e0ng c\u1ee7a b\u00e1o c\u00e1o cu\u1ed1i c\u00f9ng. N\u00f3 bi\u1ebfn m\u1ed9t c\u00e2u chuy\u1ec7n ph\u1ee9c t\u1ea1p th\u00e0nh m\u1ed9t \u0111\u1ecbnh d\u1ea1ng tr\u1ef1c quan d\u1ec5 ti\u1ebfp nh\u1eadn, gi\u00fap n\u00e2ng cao s\u1ef1 hi\u1ec3u bi\u1ebft cho t\u1ea5t c\u1ea3 ng\u01b0\u1eddi \u0111\u1ecdc.<\/p>\n

          Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 s\u1ef1 r\u00f5 r\u00e0ng ph\u01b0\u01a1ng ph\u00e1p lu\u1eadn \ud83c\udf1f<\/h2>\n

          Nghi\u00ean c\u1ee9u v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 v\u1ec1 vi\u1ec7c kh\u00e1m ph\u00e1 v\u00e0 truy\u1ec1n \u0111\u1ea1t tri th\u1ee9c. C\u00e1ch ch\u00fang ta tr\u00ecnh b\u00e0y ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a m\u00ecnh s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch t\u00ecm ki\u1ebfm c\u1ee7a ch\u00fang ta \u0111\u01b0\u1ee3c \u0111\u00f3n nh\u1eadn. S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u cung c\u1ea5p m\u1ed9t khung v\u1eefng ch\u1eafc \u0111\u1ec3 tr\u00ecnh b\u00e0y c\u00e1c c\u01a1 ch\u1ebf trong nghi\u00ean c\u1ee9u c\u1ee7a b\u1ea1n. Ch\u00fang v\u01b0\u1ee3t qua m\u00f4 t\u1ea3 b\u1eb1ng v\u0103n b\u1ea3n \u0111\u1ec3 mang l\u1ea1i c\u00e1i nh\u00ecn kh\u00f4ng gian v\u1ec1 s\u1ef1 di chuy\u1ec3n c\u1ee7a d\u1eef li\u1ec7u.<\/p>\n

          Vi\u1ec7c \u00e1p d\u1ee5ng th\u1ef1c h\u00e0nh n\u00e0y kh\u00f4ng \u0111\u00f2i h\u1ecfi k\u1ef9 n\u0103ng k\u1ef9 thu\u1eadt cao, nh\u01b0ng n\u00f3 \u0111\u00f2i h\u1ecfi m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 k\u1ef7 lu\u1eadt khi suy ngh\u0129 v\u1ec1 d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. N\u00f3 bu\u1ed9c nh\u00e0 nghi\u00ean c\u1ee9u ph\u1ea3i xem x\u00e9t t\u1eebng \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra, \u0111\u1ea3m b\u1ea3o kh\u00f4ng b\u1ecf s\u00f3t \u0111i\u1ec1u g\u00ec. Trong th\u1eddi \u0111\u1ea1i m\u00e0 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a d\u1eef li\u1ec7u l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng, s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) tr\u1edf th\u00e0nh minh ch\u1ee9ng cho thi\u1ebft k\u1ebf nghi\u00ean c\u1ee9u nghi\u00eam ng\u1eb7t.<\/p>\n

          D\u00f9 b\u1ea1n \u0111ang vi\u1ebft lu\u1eadn v\u0103n, b\u00e0i b\u00e1o khoa h\u1ecdc hay \u0111\u1ec1 xu\u1ea5t t\u00e0i tr\u1ee3, h\u00e3y c\u00e2n nh\u1eafc gi\u00e1 tr\u1ecb c\u1ee7a b\u1ea3n \u0111\u1ed3 ph\u01b0\u01a1ng ph\u00e1p lu\u1eadn tr\u1ef1c quan. N\u00f3 mang l\u1ea1i m\u1ed9t l\u1edbp chuy\u00ean nghi\u1ec7p v\u00e0 r\u00f5 r\u00e0ng m\u00e0 v\u0103n b\u1ea3n \u0111\u01a1n thu\u1ea7n kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c. B\u1eb1ng c\u00e1ch l\u00e0m r\u00f5 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n, b\u1ea1n m\u1edf ra kh\u1ea3 n\u0103ng ki\u1ec3m tra, x\u00e2y d\u1ef1ng ni\u1ec1m tin v\u00e0 \u0111\u00f3ng g\u00f3p v\u00e0o \u0111\u1ed9 tin c\u1eady t\u1eadp th\u1ec3 trong l\u0129nh v\u1ef1c c\u1ee7a m\u00ecnh.<\/p>\n","protected":false},"excerpt":{"rendered":"

          Nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o s\u1ef1 r\u00f5 r\u00e0ng, ch\u00ednh x\u00e1c v\u00e0 kh\u1ea3 n\u0103ng truy\u1ec1n \u0111\u1ea1t hi\u1ec7u qu\u1ea3 c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p. M\u1ed9t trong nh\u1eefng c\u00f4ng…<\/p>\n","protected":false},"author":1,"featured_media":896,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt: M\u1ed9t h\u01b0\u1edbng d\u1eabn","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt. N\u00e2ng cao \u0111\u1ed9 r\u00f5 r\u00e0ng trong ph\u01b0\u01a1ng ph\u00e1p lu\u1eadn, tr\u1ef1c quan h\u00f3a s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u v\u00e0 c\u1ee7ng c\u1ed1 c\u1ea5u tr\u00fac lu\u1eadn v\u0103n c\u1ee7a b\u1ea1n ngay h\u00f4m nay.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[46],"tags":[40,45],"class_list":["post-895","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-data-flow-diagram","tag-academic","tag-data-flow-diagram"],"yoast_head":"\nS\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt: M\u1ed9t h\u01b0\u1edbng d\u1eabn<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u trong nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt. 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