国际数学建模大赛 2012年outstanding奖经验

1。 数学建模 > 解决模型

      模型先提出简单的框架，再深化、复杂

      灵敏度： 对于某些模型里的关键参数，取不同的值，看有什么变化或者某种情况变化了那个模型会怎样等等

      时间安排： 第一天选好题目，加上分析完整个文章的最低的可行性方案就很好了

2. MCM （a 连续 b 离散）  ICM 交叉学科

     MCM 题目简短，自己加假设   ICM 题目长，小问多，工作量大，交叉学科术语要求高，除非有长度限制，必须写50多页

3.  创造性如何体现：

     1. 独创一个模型

     2. 改进现有的模型

     3. 合并或嵌套多个现有模型

4. 数据的来源

    最好找到数据，实在没有就有模拟的数据

5. 准备：

   彩色打印机， 订书机，至少三台电脑，参考书，程序列表，食物饮料，软件（office word, matlab, lingo, visio, C++, 翻译软件, Photoshop, adobe acrobat pro. ） 赛前睡好觉  

What you need for hiking in Huashan Mountain

1. What to take with you:
gloves: for grabbing the chains for steep stairs climbing
napkin/tissues: because their toilets don't have that
money: to buy food/water on your way up/down.  The prices are not low but reasonable
Your ID and other hiking necessities like:
water,
food,
clothes,
earplug and eyecover for sleeping,
a mask to protect you from smokers,
a camera and selfie stick,
handsoap for post-hike clean up(because you have to use your hands to do this hiking),
cell phone,
mosquito repellent,
first-aid stuff,
etc.

2. Where to live on the mountain:
There are multiple hotels there, you could book the hotels online like 携程 etc. The hotels usually provide hot water, which is a nice thing

3. How to get to Huashan:
I chose Subway + 高铁railway/train
You could book 高铁railway/train ticket from Xi'an Bei西安北 to Huashan Bei华山北 online or at the train station.
Xi'an Subway can take you to Xi'an Bei西安北station.

4. How to get to the mountain:
There are free minibus No.1 and No.2  . I took the No.1 . They can drive you to the visitor center of the mountain. Never trust any local drivers who aggressively try to persuade you give you a ride, which is usually expensive.

5. At the visiter center, you can decide whether to take the bus + cable car up the hill or hike. It's up to you. But you have to know that the nearst hotel on top is 6-hr away from the foot if you hike up. So be prepared.








   

[Solved]Luggage issues/ missing baggage with China Eastern Airline

When I arrived in Shanghai then Xi'an, from Los Angeles, I was not able to find my baggage.

The solutions turned out to be:
1. I went to the "baggage inquiry"(行李查询)  and was told that the baggage was still at LAX. In other words, it didn't come with me. I provided them with my luggage ticket(the small ticket you got along with the boarding pass) and travel document for photocopying and left my phone number. They promised that the baggage would arrive the next night or slightly later. They gave me a hard copy of the documents and their phone number.
2. I called them the next day and was told that the arrival would be further delayed due to their failure to load my luggage to the flight they planned. I told them to try their best to return the luggage back to me as early as possible.
3. Two days after my Arrival in Xi'an, I received a call and then got my luggage from a sketchy local delivery guy without need for signature.

Since my cousin works at China Eastern and she insists that other airlines in China are even worse, I won't comment too much on this. But I would recommend Cathay Pacific, if you are travelling with important items/things to do.


中文版
解决方案：
1. 去行李查询留下联系方式和行李小票，他们会给你一张复印件，上面有联系电话
2. 不断联系那个联系电话询问行李下落
3.最终他们会联系当地快递，从机场把行李寄到你家

【已解决】东方航空 东方万里行怎样追讨、补登、追溯、查看积分

如果你刚刚注册会员，想要把以前的旅行积分攒进来，你需要：
1 拨通人工服务 ： 95530 然后 1 中文， 然后按 5 会员服务
2 告诉他们你的证件号 会员号 和手机号 以验证身份
3 告诉他们你哪一天从哪飞到哪里的航班需要攒积分
（需要注意的是，必须在飞机落地一周后才能攒积分）

查看积分：

www.ceair.com

登陆

我的东航 -》 万里行会员尊享 -》东方万里行会员

MIUI 6 how to set password 红米手机 MIUI 6 设置锁屏密码

settings ---> lock screen and password


设置 ---》 锁屏与密码

How to fix the first column of Excel 2013

1. highlight the first row
2. view -> freeze panes

How to prevent Windows 10 from automatically getting installed

1. 
   
2. Control Panel-- > "Programs" --> Programs and features;
3. From the left pane click the View Installed Updates link.
4. Now use the search box to type EXACTLY what's highlighted in RED below 
5. If you're running Windows 8.1 Update look carefully for these updates: KB3035583and KB2976978. If you're running Windows 7 Service Pack 1 look carefully for these updates: KB3035583, KB2952664, and KB3021917.
6. Remove them
7. You could reboot later

how to mark all of your gmail emails "READ"

1. in the search box, type in:unread
2. below the search box, their is a button with an unchecked smaller box.  click on the small triangle there and select "all"
3. Then a small yellow bar appears asking whether you can to select all conversations, click on it
4. click "more" -> mark as read

More details :  http://www.zdnet.com/article/how-to-mark-all-unread-emails-as-read-in-gmail-and-more/

Windows 10 automatically got upgraded/installed. What would you do if you are forced to install windows 10 without notice

My windows 8 got suddenly restarted with multiple unsaved documents closed. It was a disaster

After a long time restarting again and again, windows 10 popped up a window to let me decide whether to agree or decline the new agreement and embrace the new world. If I click decline, I will lose %@&$*Q^*W((..... etc .

So I googled around and
found this answer here:
http://answers.microsoft.com/en-us/windows/forum/windows_10-win_upgrade/windows-10-upgrade-is-at-the-installation-point-if/49e7c0ae-a884-4294-9fab-7dda42ef7033?auth=1


Basically you decline their terms & conditions and you'll get restored.

Bowtie alignment: how to set -k to infinity

Unlike -m, -k has a default to be 1. To set -k to infinity, you should use -a instead

--strata has no effect unless combined with -m, -a, or -k N where N > 1

This bowtie indicates that your used --strata without specifying -m

By default, -m is infinite, allowing infinite numbers of alignments per read if exist

However, --strata is a strategy which only works when -m is specified.

So you either remove --strata, or specify an -m, like 10000