2009年MCM B题 能源和手机 翻译 参考资料 数据集中帖（更新资源）

xiaoks518

怎么还没有更新啊.......

victoriajh

抢一个抢一个

victoriajh

抢一个抢一个

kk3320b

顶~~~~~~~~~~~~~~~~~~~~~~~~~~

lott

来了，好像B题资料难收集啊

summer_sxj

支持~~~~！！！

hairi

PROBLEM B: Energy and the Cell Phone

This question involves the “energy” consequences of the cell phone revolution. Cell phone usage is mushrooming, and many people are using cell phones and giving up their landline telephones. What is the consequence of this in terms of electricity use? Every cell phone comes with a battery and a recharger.
这个问题涉及到手机革命的能源问题。手机使用率迅速增加，许多人使用手机并放弃了固定电话。这方面的用电能使用会带来什么后果？每个手机都配备了电池和充电器。
Requirement 1

Consider the current US, a country of about 300 million people. Estimate from available data the number H of households, with m members each, that in the past were serviced by landlines. Now, suppose that all the landlines are replaced by cell phones; that is, each of the m members of the household has a cell phone. Model the consequences of this change for electricity utilization in the current US, both during the transition and during the steady state. The analysis should take into account the need for charging the batteries of the cell phones, as well as the fact that cell phones do not last as long as landline phones (for example, the cell phones get lost and break).
要求1
目前认为美国是一个人口约为3亿人的国家，从现有数据估计家庭号为h，每个家庭有M个成员，以前是使用座机电话的。现在，假设所有的座机被手机取代，也就是说每个家庭成员都有手机。在当前美国这种用电模型即过渡又是稳定的，分析应该考虑到对移动电话充电的需要，同时移动电话不能像固定电话那样持续使用也是一个现实问题（比如说移动电话可能会丢失或者损坏）
Requirement 2

Consider a second “Pseudo US”-a country of about 300 million people with about the same economic status as the current US. However, this emerging country has neither landlines nor cell phones. What is the optimal way of providing phone service to this country from an energy perspective? Of course, cell phones have many social consequences and uses that landline phones do not allow. A discussion of the broad and hidden consequences of having only landlines, only cell phones, or a mixture of the two is welcomed.
考虑到第二个“伪美国”--一个约3亿人口、跟当前美国具有相同的经济地位的国家，然而，这个新兴国家既没有固定电话也没有移动电话，从这个国家的能源角度看，用什么最佳方式为这个国家提供电话服务，当然，手机有很多固定电话所不具有的用处和社会影响。这个讨论是关于单独使用固定电话或者单独使用移动电话，或者混合使用两种电话带来的广泛或潜在的影响。
Requirement 3

Cell phones periodically need to be recharged. However, many people always keep their recharger plugged in. Additionally, many people charge their phones every night, whether they need to be recharged or not. Model the energy costs of this wasteful practice for a Pseudo US based upon your answer to Requirement 2. Assume that the Pseudo US supplies electricity from oil. Interpret your results in terms of barrels of oil.
手机需要定期充电。但是许多人在不考虑手机是否要充电的情况下，总是将充电器一直插在电器插槽上。在前两个假设成立的基础上，建立能源浪费的数学模型。另外，假定美国以石油作为电力来源，计算、解释浪费的石油量。
Requirement 4

Estimates vary on the amount of energy that is used by various recharger types (TV, DVR, computer peripherals, and so forth) when left plugged in but not charging the device. Use accurate data to model the energy wasted by the current US in terms of barrels of oil per day.
在估计不同电器设备（电视、DVR、电脑外围设备等）所使用能源数量时，电器特性：没有充电设备  要求用精确的数据建立模型   模型是关于当前美国每天所浪费的能源   以原油（桶/天）计量
Requirement 5

Now consider population and economic growth over the next 50 years. How might a typical Pseudo US grow? For each 10 years for the next 50 years, predict the energy needs for providing phone service based upon your analysis in the first three requirements. Again, assume electricity is provided from oil. Interpret your predictions in term of barrels of oil.
现在考虑人口及经济增长在未来的50年内的情况。如何使这个假设中的美国发展壮大。         对于每一个10年的今后50年内进行能源的需求预测，前提是在你前三次的分析基础上而进行的提供的电话服务。另外还有一个假设是：电力来自石油。解释你预测到的石油桶数目。

victoriajh

楼主什么时候更新资料啊

tramp2008

就是啊，跟帖的准不准啊？

sss888518

顶！！！！！！！！！！！！