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[讨论]苏北数模竞赛试题:研究生请进

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发表于 2005-5-27 18:59:51 | 显示全部楼层 |阅读模式
< ><B><FONT face="Times New Roman">A</FONT></B><B>题.抑制房地产泡沫问题</B><B><p></p></B></P>
< >近几年来,我国各大城市的房价出现了普遍持续上涨、高居不下的情况。房价的上涨使生活成本大幅增加,导致许多中低收入人群买房难。因此如何有效地抑制房地产价格上扬,是一个备受关注的社会问题。现在请你就以下几个方面的问题进行讨论:<p></p></P>
< ><FONT face="Times New Roman">1</FONT>.建立一个城市房价的数学模型,通过这个模型对房价的形成、演化机理进行深入细致的分析;<p></p></P>
<P ><FONT face="Times New Roman">2</FONT>.通过分析找出影响房价的主要因素;<p></p></P>
<P ><FONT face="Times New Roman">3</FONT>.给出抑制房地产价格的政策建议;<p></p></P>
<P ><FONT face="Times New Roman">4</FONT>.对你的建议可能产生的效果进行科学预测和评价。<B><p></p></B></P>
<P  align=center><B><FONT face="Times New Roman"> <p></p></FONT></B></P>
<P  align=center><B><FONT face="Times New Roman"> <p></p></FONT></B></P>
<P ><B><FONT face="Times New Roman">B</FONT></B><B>题.工件的安装与排序问题</B><p></p></P>
<P >某设备由<FONT face="Times New Roman">24</FONT>个工件组成,安装时需要按工艺要求重新排序。<p></p></P>
<P >Ⅰ.设备的<FONT face="Times New Roman">24</FONT>个工件均匀分布在等分成六个扇形区域的一圆盘的边缘上,放在每个扇形区域的<FONT face="Times New Roman">4</FONT>个工件总重量与相邻区域的<FONT face="Times New Roman">4</FONT>个工件总重量之差不允许超过一定值(如<FONT face="Times New Roman">4g</FONT>)。<p></p></P>
<P >Ⅱ.工件的排序不仅要对重量差有一定的要求,还要满足体积的要求,即两相邻工件的体积差应尽量大,使得相邻工件体积差不小于一定值(如<FONT face="Times New Roman">3</FONT><v:shapetype><FONT face="Times New Roman"> <v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path connecttype="rect" gradientshapeok="t" extrusionok="f"></v:path><lock aspectratio="t" v:ext="edit"></lock></FONT></v:shapetype><v:shape><v:imagedata></v:imagedata></v:shape>);<p></p></P>
<P >Ⅲ.当工件确实不满足上述要求时,允许更换少量工件。<p></p></P>
<P >问题<FONT face="Times New Roman">1</FONT>.按重量排序算法;<p></p></P>
<P >问题<FONT face="Times New Roman">2</FONT>.按重量和体积排序算法;<p></p></P>
<P >问题<FONT face="Times New Roman">3</FONT>.当工件不满足要求时,指出所更换工件及新工件的重量和体积值范围,并输出排序结果。<p></p></P>
<P >请按下面两组工件数据(重量单位:<FONT face="Times New Roman">g </FONT>,体积单位:<v:shape><FONT face="Times New Roman"> <v:imagedata></v:imagedata></FONT></v:shape>),进行实时计算:<p></p></P>
<P ><FONT face="Times New Roman"> <p></p></FONT></P>
<P ><FONT face="Times New Roman"> <p></p></FONT></P>
<P ><FONT face="Times New Roman"> <p></p></FONT></P>
<DIV align=center>
<TABLE  cellSpacing=0 cellPadding=0 border=1>

<TR>
<TD  width=53>
<P  align=center>序号</P></TD>
<TD  width=96>
<P  align=center>重量</P></TD>
<TD  width=94>
<P  align=center>体积</P></TD>
<TD  width=62>
<P  align=center>序号</P></TD>
<TD  width=84>
<P  align=center>重量</P></TD>
<TD  width=98>
<P  align=center>体积</P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">1</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">348</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">101.5</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">1</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">358.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">103</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">2</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">352</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">102</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">2</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">357.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">103</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">3</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">347</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">105</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">3</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">355</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">103</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">4</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">349</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">105.5</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">4</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">351</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">103.5</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">5</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">347.5</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">106</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">5</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">355.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">103</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">6</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">347</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">104</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">6</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">357</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">102</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">7</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">330</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">94</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">7</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">341</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">96</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">8</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">329</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">98</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">8</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">342</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">96.5</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">9</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">329</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">100.5</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">9</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">340</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">95.5</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">10</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">327.5</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">98.5</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">10</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">344</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">97</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">11</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">329</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">98</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">11</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">342.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">95.1</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">12</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">331.5</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">99</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">12</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">343.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">96.5</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">13</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">348.5</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">104.5</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">13</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">357.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">102.5</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">14</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">347</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">105</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">14</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">355</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">103</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">15</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">346.5</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">107.5</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">15</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">353.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">103.5</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">16</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">348</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">104.5</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">16</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">356.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">103.5</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">17</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">347.5</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">104</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">17</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">356</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">103.5</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">18</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">348</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">104.5</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">18</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">352.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">104</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">19</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">333</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">97</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">19</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">342.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">98</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">20</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">330</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">97</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">20</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">344</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">96.5</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">21</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">332.5</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">99</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">21</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">339.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">98</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">22</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">331.5</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">98</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">22</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">341.5</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">96</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">23</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">331.5</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">96.5</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">23</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">341</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">96</FONT></P></TD></TR>
<TR>
<TD  width=53>
<P  align=center><FONT face="Times New Roman">24</FONT></P></TD>
<TD  width=96>
<P  align=center><FONT face="Times New Roman">332</FONT></P></TD>
<TD  width=94>
<P  align=center><FONT face="Times New Roman">94.5</FONT></P></TD>
<TD  width=62>
<P  align=center><FONT face="Times New Roman">24</FONT></P></TD>
<TD  width=84>
<P  align=center><FONT face="Times New Roman">345</FONT></P></TD>
<TD  width=98>
<P  align=center><FONT face="Times New Roman">97</FONT></P></TD></TR></TABLE></DIV>
<P ><FONT face="Times New Roman"> </FONT><p></p></P>
发表于 2005-5-29 00:56:01 | 显示全部楼层
<>有没有谁知道答案呢。</P>
发表于 2005-5-30 06:09:31 | 显示全部楼层
<>已删除</P>
[此贴子已经被作者于2005-6-6 16:17:51编辑过]

发表于 2005-5-30 07:19:29 | 显示全部楼层
<>已删除</P>
[此贴子已经被作者于2005-6-2 15:05:43编辑过]

发表于 2005-6-3 04:53:21 | 显示全部楼层
谁有第一题的
发表于 2005-6-12 03:09:57 | 显示全部楼层
第一题没有原始房价数据,没法做啊。
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