2010 HiMCM B题特等奖学生论文下载2544
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论文摘要如下:
Restatement of Problem
The purpose of this model is to decrease the crime rate relating to gangs and violence in a city. Although the crime rate has decreased from 2000-‐2006, it has started increasing again. From 2006-‐2008, the incidence of homicide increased by 78%. The Mayor of the city has contacted us to find a model to decrease crime rate.
Definitions
Defining juvenile delinquents as children of high school age or younger (since particular age depends on the US state) -‐ Defining persistently low-‐performing schools as high schools with a graduation rate of under 70% -‐ All costs referred to are in US dollars.
Assumptions
Some of the data was unclear as to what refers to within the city or within the country, so we had to make some assumptions:
-‐ The high school enrollment rate only refers to high schools within the city.
-‐ The incidences of violence refer only to those that occurred within the city.
-‐ That there was a disease outbreak or natural disaster in the year 2000 seeing as the county population increased from 2000-‐2008 and a 7000 person drop from 2000
-‐2001 seems very unlikely since at all other times ratio of city to county population growth has remained constant.
-‐ Empirical evidence shows that normally unemployment rate correlates with crime rates, but since there is no correlation in this city, we can assume that most of the crime comes from gangs of youth.
-‐ This city is in the United States and hence eligible for federal funding.
We calculated incidence of violence divided by population to obtain a crime rate rather than simply a figure with the number of incidents of violence.
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