Video: Cov qhab nia sib npaug li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov qhab nias ntawm ib kev sib tw , S, xam raws li tus lej ntawm kev hloov pauv thiab qhov sib txawv cov qhab nias . Hloov pauv cov qhab nias yog muab los ntawm ib lub rooj saib (saib PAM, BLOSUM). Gap cov qhab nias feem ntau yog xam Raws li qhov suav ntawm G, qhov sib txawv qhib qhov nplua thiab L, qhov sib txawv ncua kev nplua. Rau qhov sib txawv ntawm qhov ntev n, tus nqi sib txawv yuav yog G + Ln.
Raws li, qhov qhab nia sib npaug yog dab tsi?
Qhov zoo kev sib tw thiab alignment qhab nia Qhov zoo kev sib tw yog ib kev sib tw muab qhov siab tshaj plaws qhab nias , thiab alignment qhab nia yog qhov siab tshaj no qhab nias . Ntawd yog, lub alignment qhab nia ntawm X thiab Y = cov qhab nias ntawm X thiab Y nyob rau hauv qhov kev pom zoo kev sib tw . Piv txwv li, lub alignment qhab nia ntawm X thiab Y yog 36.
Ib sab saum toj no, kev sib txuas ua ke ua haujlwm li cas? Hauv bioinformatics, a kev sib raug zoo yog ib txoj hauv kev npaj cov ua ntu zus DNA, RNA, los yog protein los txheeb xyuas thaj tsam ntawm qhov zoo sib xws uas tej zaum yuav yog qhov tshwm sim ntawm kev ua haujlwm, kev tsim, lossis kev sib raug zoo ntawm cov ua ntu zus.
Ntawm no, qhov qhab nia hauv bioinformatics yog dab tsi?
Hauv cov ntsiab lus ntawm kev sib txuas ua ke, a qhab nias yog tus lej lej uas piav qhia txog qhov zoo ntawm qhov kev sib tw. Cov lej siab dua sib npaug sib npaug. Cov qhab nias scale nyob ntawm qhov qhab nias system siv (hloov matrix, gap nplua).
Dab tsi yog qhov zoo tshaj plaws alignment nyob rau hauv ib theem zuj zus?
Cov kev sib haum xeeb zoo ntawm ob protein ua ntu zus yog cov kev sib tw uas ua kom cov lej ntawm khub-cov qhab nia tsawg dua qhov kev nplua rau kev nthuav qhia qhov sib txawv. Dynamic programming tso cai rau cov kev sib haum xeeb zoo ntawm ob ua ntu zus kom pom nyob rau hauv qhov kev txiav txim ntawm mnsteps, qhov twg m thiab n yog qhov ntev ntawm qhov ua ntu zus.
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Puas yog txhua qhov sib npaug sib npaug sib npaug?
Thawj qhov sib npaug sib npaug yog qhov tseeb yog tias nws muaj kev txuag kom muaj nuj nqis. Piv txwv li, qhov sib npaug sib cais yeej ib txwm muaj tseeb, txij li lub ntsiab lus lawv yog ntawm daim ntawv: M(y) + N(t) = 0, yog li ϕ(t, y) = A(y) + B(t) yog a khaws cia kom muaj nuj nqis
Cov coefficients hauv kev sib npaug tshuaj sib npaug qhia koj li cas txog cov reactants thiab cov khoom?
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Dab tsi yog qhov qhab nia f1 zoo rau tus qauv?
F1 tus qhab nia yog qhov kev sib haum xeeb ntawm qhov tseeb thiab rov qab los, qhov twg F1 tau nce mus txog nws qhov zoo tshaj plaws ntawm 1 (zoo meej precision thiab rov qab) thiab phem tshaj ntawm 0
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no