2018美赛A,C,E赛题官方更新和中文翻译

madio

PROBLEM NOTES AND UPDATES
Problem A:
3-30 mHz should be 3-30 MHz

Problem C:
Determining the “Energy profile” asks the students to select and aggregate what they think is important from the data in the context of the problem and at a level useful to the decision makers, the governors, who don‘t want to deal with 605 variables in an equation. This is a basic modeling step, and essential for what follows, which is the longitudinal analysis and then the improvements through policy change.

The information collected by the United Stated Energy Information Administration is gathered from across different states and territories. Each state has its own set of regulations and has implemented those regulations at different times in the past. The result is that different states have different ways to collect information, and the data collection for different variables started at different times. Additionally, different entities within a state produce energy separate from major utilities, and some information about energy production is not collected.

More details about how the information is collected can be found at the following location:
https://www.eia.gov/state/seds/seds-technical-notes-complete.php?sid=US#Consumption

For more specific information about the relationships between the variables in the data set please see the following document:
https://www.eia.gov/state/seds/sep_use/notes/use_a.pdf

Problem E:
Task 2: Select one of the top 10 most fragile states as determined by the Fragile State Index (http://fundforpeace.org/fsi/data/) and determine how climate change may have increased fragility of that country. Use your model to show in what way(s) the state may be less fragile without these effects. The 10 countries are: South Sudan, Somalia, Central African Republic, Yemen, Sudan, Syria, Democratic Republic of Congo, Chad, Afghanistan and Iraq.

问题 A：
3-30 mHz 应该是 3-30 MHz
问题C：
由于州长们，即决策者，不想在一个方程中使用650个变量，因此确定“能源概况”就要求学生从该问题的背景以及对州长们有用性的程度上选择和汇总认为重要的数据。
这是一个基本的建模步骤，对于随后的分析是必不可少的，即纵向分析，然后通过政策改变来改进。

美国国家能源情报署所采集的信息来自不同的州和地区。每个州都有一套各自的制度条例，且于过去不同时期开始实施。因此，不同的州有不同的信息采集方式，且不同变量的信息采集始于不同时期。
此外，一个州内的不同实体生产的能源与公用事业生产的能源相分离，并且一些关于能源生产的信息还未收集。

有关如何收集信息的更多细节可在以下位置找到：
https://www.eia.gov/state/seds/seds-technical-notes-complete.php?sid=US#Consumption

有关数据集合中变量之间关系的更详细的信息，请参阅以下文档：
https://www.eia.gov/state/seds/sep_use/notes/use_a.pdf

问题E：
任务2: 十国分别是：南苏丹、索马里、中非共和国、也门、苏丹，叙利亚、刚果民主共和国、乍得、阿富汗以及伊拉克。

TopFeng

哦，知道了
谢谢

601580204

HHHHHHHHHHHH

601580204

xxxxxxxxxxxx

1712400950

谢谢！！！！！！！！！！

601491428

1111111111111111111

zhujiehaode

谢谢谢谢谢谢谢谢。。。

493763452

厉害了谢谢谢

3025764498

学习一下，非常感谢

建模新手2333

感谢分享感谢分享感谢分享