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20xx年北京工業(yè)大學(xué)數(shù)學(xué)建模競賽復(fù)賽試題-資料下載頁

2025-08-12 08:41本頁面

【導(dǎo)讀】位于非洲某國的國家公園中棲息著近11000頭大象。管理者要求有一個健康。穩(wěn)定的環(huán)境以便維持這個11000頭大象的穩(wěn)定群落。管理者逐年統(tǒng)計了大象的數(shù)。保持在11000頭的數(shù)量,而其中每年大約有近600頭到800頭是被轉(zhuǎn)移的?,F(xiàn)在的數(shù)量就使用了一種避孕注射法。用這種方法注射一次可以使得一頭成熟母。象在兩年內(nèi)不會受孕。目前在公園中已經(jīng)很少發(fā)生移入和移出大象的情況。近于1:1,且采取了措施維持這個性別比。而雙胞胎的機(jī)會接近于%。每次懷孕期為22個月。注射避孕藥會使母象每月發(fā)情,但不會。象通常在,所以這種注射不會引起其它附加的反應(yīng)。新生的幼象中只有70%到80%可以活到1歲。但是其后的存活率很高,要。超過95%,并且這個存活率在各個年齡段都是相同的,一直到60歲左右。象的最高年齡是70歲,在這個公園里不可以狩獵,偷獵也微乎其微。落的當(dāng)前的年齡結(jié)構(gòu)。不免有些不確定性,也要估計這種不確定性的影響。該申請者提供信譽卡。

  

【正文】 ,u,g,c,bb,f,t,02,t,g,00200,7, a,u,g,c,v,f,f,0,f,g,00160,0, b,u,g,c,h,f,t,02,t,g,00400,108, b,u,g,i,v,f,t,01,t,g,00400,9, b,14,y,p,ff,ff,0,f,t,02,f,g,00160,1, b,u,g,m,v,2,f,t,01,t,g,00460,68, b,y,p,aa,v,t,f,0,f,g,00120,375, b,u,g,i,v,f,f,0,f,g,00160,10, b,u,g,c,j,f,f,0,t,s,00000,0,+ b,0,u,g,q,v,f,f,0,f,g,00160,1, b,12,u,g,c,v,f,f,0,f,s,00080,0, b,u,g,ff,ff,0,f,f,0,f,g,00000,1000, b,13,u,g,d,h,f,f,0,f,g,00228,0, a,u,g,w,v,f,f,0,f,g,00220,5, a,u,g,q,v,f,f,0,t,g,00120,809, a,u,g,m,h,f,t,01,t,g,00272,108, a,u,g,ff,ff,0,f,f,0,f,g,00076,0, b,y,p,k,ff,0,f,f,0,f,g,00120,0, a,u,g,w,v,f,t,01,t,g,00240,4, b,u,g,c,n,f,t,02,t,g,00160,587, b,u,g,aa,v,f,f,0,f,g,00080,350, b,u,g,aa,v,f,f,0,t,g,00100,0, b,u,g,k,v,f,f,0,t,g,00231,0, b,u,g,i,bb,f,f,0,t,g,00232,200, b,y,p,aa,v,f,f,0,t,g,00320,0, a,7,u,g,aa,h,3,f,f,0,f,g,00000,0, b,y,p,w,v,f,f,0,t,g,00309,2, b,u,g,cc,v,f,f,0,t,g,00000,501, a,u,g,c,v,f,f,0,f,g,00000,351, b,9,u,g,aa,v,f,f,0,t,g,00000,0, a,u,g,ff,ff,0,f,t,06,f,g,00000,200, b,u,g,i,bb,1,f,f,0,f,g,00100,2, a,u,g,q,v,f,t,01,t,g,00000,160, a,u,g,i,v,f,f,0,t,s,00144,0, b,u,g,i,v,t,f,0,t,g,00100,68, a,u,g,q,v,f,t,01,t,g,00200,11, a,5,y,p,ff,ff,0,f,f,0,f,g,00000,0, b,u,g,c,h,f,t,01,t,g,00416,21, a,u,g,aa,v,f,f,0,f,g,00000,390, a,u,g,c,v,f,t,01,t,g,00040,154, b,9,u,g,aa,v,f,f,0,f,g,00000,0, b,u,g,c,v,f,f,0,f,g,00216,0, a,u,g,w,v,f,f,0,t,g,00160,0, b,4,y,p,cc,v,f,f,0,t,g,00120,0, b,y,p,w,v,f,f,0,f,s,00160,0, b,y,p,m,v,f,f,0,f,g,00000,0, a,u,g,c,v,f,f,0,t,g,00180,0, a,u,g,c,v,f,t,01,t,g,00080,5, b,u,g,d,h,f,f,0,t,s,00252,0, b,y,p,ff,ff,f,f,0,f,g,00120,1, b,u,g,cc,v,f,f,0,f,g,00000,2, a,u,g,aa,v,f,f,0,t,g,00240,117, a,u,g,i,h,f,f,0,f,g,00260,246, a,u,g,aa,v,f,f,0,f,g,00240,237, a,u,g,q,h,f,t,12,t,g,00129,3, b,u,g,m,v,f,t,01,f,g,00100,1, a,u,g,ff,ff,0,f,f,0,f,g,00000,50, a,u,g,c,v,0,f,f,0,f,g,00000,0, b,u,g,k,v,f,f,0,f,g,00280,364, b,1,y,p,d,h,3,f,f,0,f,g,00176,537, b,u,g,i,v,f,f,0,t,g,00140,2, b,y,p,d,v,f,f,0,f,g,00240,3, b,u,g,m,v,f,f,0,t,s,00400,0, b,y,p,e,h,f,f,0,f,g,00260,0, a,u,g,c,v,2,f,t,02,t,g,00200,394, a,y,p,ff,ff,2,f,t,01,t,g,00200,1, b,u,g,aa,v,f,f,0,f,g,00280,750, b,u,g,c,h,f,f,0,t,g,00000,0, b,u,g,m,v,f,f,0,f,s,00000,0, b,u,g,x,h,t,t,08,f,g,00000,0,+ b,u,g,w,v,f,t,01,f,g,00420,283, 表 4:待申請者的個人信息(共 90人,其中后 37人信息不全) b,y,p,w,v,t,f,0,t,g,00052,1442 b,u,g,c,v,t,t,17,f,g,00200,1208 b,u,g,w,v,t,f,0,t,g,00400,5800 a,u,g,q,v,t,t,01,f,g,00000,0 b,u,g,q,v,t,t,01,f,g,00160,0 b,u,g,aa,v,1,t,f,0,t,g,00240,0 b,y,p,c,v,4,t,f,0,f,g,00080,0 b,u,g,w,v,t,f,0,t,g,00260,0 a,u,g,q,v,t,t,03,t,g,00000,0 b,u,g,q,h,t,t,12,t,g,00408,1000 b,u,g,cc,h,t,t,06,f,g,00160,2072 a,y,p,x,h,t,t,01,f,g,00070,0 a,u,g,cc,v,t,f,0,f,g,00440,11177 a,u,g,q,v,t,t,04,f,g,00060,540 a,u,g,q,h,t,t,02,f,g,00000,0 a,u,g,q,h,t,t,01,f,g,00000,678 b,u,g,i,v,t,t,09,f,g,00056,742 a,u,g,q,v,t,f,0,t,g,00228,0 a,u,g,q,v,t,t,05,f,g,00220,2503 a,u,g,q,h,t,t,11,f,g,00080,99 b,u,g,d,h,f,f,0,t,g,00292,0 b,y,p,m,v,f,f,0,f,g,00140,0 b,u,g,c,v,f,t,02,f,g,00000,5552 b,9,u,g,ff,ff,4,f,t,01,f,g,00070,6 b,u,g,ff,ff,f,f,0,f,g,00080,0 b,0,y,p,m,bb,0,f,f,0,t,s,00500,1 b,u,g,c,v,1,f,f,0,f,g,00460,16 b,u,g,i,bb,0,f,f,0,f,g,00180,0 a,u,g,aa,v,1,f,t,02,t,g,00320,1 a,u,g,aa,v,f,f,0,f,g,00220,1000 b,u,g,i,bb,f,f,0,t,g,00440,4500 b,y,p,j,v,f,f,0,f,g,00140,184 a,u,g,i,v,f,f,0,f,g,00144,0 b,u,g,cc,v,f,f,0,f,g,00100,0 b,u,g,c,v,f,f,0,t,g,00320,0 b,y,p,c,v,f,f,0,t,g,00160,0 a,u,g,k,h,f,f,0,f,g,00320,5 a,u,g,aa,v,f,t,10,t,g,00000,10 a,y,p,c,h,3,t,f,0,f,g,00240,0 a,9,u,g,aa,v,t,t,02,f,g,00088,591 a,u,g,q,v,t,t,04,f,g,00080,0 a,u,g,c,h,t,f,0,t,g,00360,1 b,10,y,p,k,h,t,f,0,t,g,00140,0 b,u,g,w,v,4,t,t,14,f,g,00383,1344 b,u,g,q,h,t,f,0,t,g,00092,0 b,y,p,c,h,t,t,01,t,g,00432,8000 b,20,u,g,x,h,t,t,09,t,g,00000,1000 b,u,g,c,v,2,t,t,11,t,g,00200,3000 b,y,p,cc,v,f,f,0,f,g,00160,0 b,y,p,m,v,f,f,0,t,g,00130,0 b,u,g,k,h,f,f,0,t,g,00340,0 a,u,g,c,v,1,f,f,0,f,g,00120,18 b,u,g,w,v,f,f,0,f,g,00465,150 以下申請者信息不全 b,4,u,g,d,bb,t,f,0,t,g,?,0 a,?,u,g,d,v,3,t,f,0,t,g,00300,0 b,?,u,g,d,v,t,f,0,t,s,00928,0 b,?,5,y,p,aa,v,t,f,0,f,g,00000,0 b,?,u,g,c,bb,t,f,0,t,s,00320,0 b,u,g,c,v,t,t,06,f,g,?,600 a,0,?,?,?,?,0,f,f,0,f,p,?,0 a,u,g,q,v,t,t,05,f,g,?,26726 ?,u,g,c,bb,t,t,02,f,g,00073,444 b,?,u,g,k,v,f,f,0,f,g,00380,2020 b,0,?,?,?,?,0,f,f,0,f,p,?,0 b,y,p,ff,ff,0,f,f,0,f,g,?,0 a,?,u,g,ff,ff,0,f,t,02,t,g,00200,105 ?,u,g,i,bb,f,f,0,f,s,01160,0 b,?,4,y,p,i,v,f,f,0,t,g,00411,0 b,0,?,?,?,?,0,f,f,0,f,p,?,0 ?,u,g,c,v,f,f,0,t,g,00372,122 ?,u,g,aa,v,f,f,0,f,g,00260,1004 a,y,p,k,v,f,t,02,f,g,?,18 a,?,u,g,ff,ff,0,f,f,0,f,g,?,5200 b,?,3,y,p,i,bb,7,f,f,0,f,g,00000,1 ?,u,g,w,v,f,f,0,t,g,00300,0 b,0,?,?,?,?,0,f,f,0,f,p,?,0 ?,y,p,?,?,f,f,0,f,s,00080,0 ?,1,u,g,q,v,f,f,0,t,g,00263,0 b,?,4,u,g,x,v,5,t,t,03,t,g,00290,2279 b,?,u,g,x,v,t,f,0,f,g,00000,0 ?,u,g,k,v,t,t,01,f,g,00160,234 b,u,g,?,?,t,f,0,f,g,00000,340 b,0,?,?,?,?,0,f,f,0,f,p,?,0 ?,u,g,q,v,1,f,t,01,f,g,00240,768 ?,y,p,?,?,0,f,f,0,t,g,00150,1 b,?,y,p,d,v,f,f,0,t,g,00460,0 a,0,?,?,?,?,0,f,f,0,f,p,?,0 b,y,p,i,bb,f,f,0,t,g,?,0 ?,y,p,cc,v,f,f,0,t,g,00200,141 ?,2,y,p,e,h,2,f,f,0,f,g,00256,17
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