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我快乐所以我博客--一品佳茗

每个人的心灵历程都是一首歌,我唱出我的所以我快乐。

 
 
 

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爱好广泛,一事无成,平生喜欢很多,至爱较少。喜欢书法,欧颜柳赵,也曾临过,但缺乏坚持,喜欢绘画,国画工写,西画彩描,也曾摹过,但缺乏深入,喜欢诗歌,诗词歌赋,也曾填过,但缺乏含蓄,喜欢舞蹈,单双多人,也曾迷过,但缺乏精巧,喜欢武术,刀枪棍棒,也曾练过,但缺乏功力,喜欢棋艺,军象跳围,也曾恋过,但缺乏心计,喜欢音乐,吹拉弹唱,也曾试过,但缺乏细胞。 不喜欢数学却上了贼船,不想当教师最终却以之为生。干一件事时间久了,可能会厌倦,也可能会喜欢。兴趣是靠自己培养的。若一个人愿意学习,相信久了会取得成绩。

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[收录]2015小美赛建模赛题收录  

2015-12-02 14:31:48|  分类: 数学建模赛题 |  标签: |举报 |字号 订阅

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2015  Certi cate Authority Cup International Mathematical Contest Modeling  http://mcm.tzmcm.cn

Problem A(MCM): The slimline seats on the airplane

An airline seat is a seat on an airliner in which passengers are accommodated for the duration of the journey. Some airlines are now introducing new "slimline" seats in economy class. These seats, in addition to weighing less, theoretically allow airlines to increase capacity without signi cantly a ecting passenger comfort. These seats may or may not feature moveable headrests, and generally do not feature adjustable lumbar support. Slimline seats are being further re ned, liberating more passenger space. The common point of them is a thinner backplate and less padding. However, many passengers have expressed displeasure with these seats. Without changing the structure of the premise, how to design seat back curve, in order to make the seat more comfortable?How to optimize the seat backplate curve and padding, in order to make the seat more comfortable, without changing the main internal structure? Please write an advertising material with 2-3 pages for the airline, to describe your design features and advantages concisely.

Problem B(MCM): The average temperature of Antarctica
The average Earth land surface temperature is a key indicator of climate change and global warming. However, in the previous estimates, there are some methodological di erences in how land average was de ned. For simplicity, we consider Antarctica only.
Please develop a mathematical framework for de ning and estimating the average surface temperature from weather station thermometer data, and describe the Antarctic temperature variation with time.
The required data can be obtained from the attachments or the published database, such as British Antarctic Survey website:
https://legacy.bas.ac.uk/met/READER/.

Problem C(ICM): Can Science Solve Terrorism?

 

Why people turn to terrorism, and especially suicidal terrorism? What are the major reasons? It's typically a combination of big issues and little ones, or what some call \push and pull" factors. The bigger issues include alienation, shared anger or outrage (e.g. at
some foreign policy), frustration, disillusionment, a sense of victimization by the actions, or in the case of Syria, inactions, of others.
The littler issues, the \lures" include the perceived benets of turning  e.g. adventure, excitement, camaraderie, a sense of belonging, being part of something far bigger etc. The key to understanding is not just to ask why people turn but how they turn, and what
strategies recruiters use in that process. E ective recruiters will use whatever tools in their arsenal to pull someone in, whether it is convincing them of their duty to go ght in defense of others, to convincing them that involvement o ers them a way out of the
humiliation and victimization the recruiter will remind the young person they are otherwise destined to face at home. Radicalization, and how it relates to recruitment (and how we respond to it) is a constantly changing system. Some extreme traits are not as disadvantageous for tness, as they appear to be for social adaptation or well-being, even when severely disordered subjects are examined.
In fact, some traits increase in severity, they become more advantageous for attracting more mates and even producing more o spring. This would characterize these traits as risky shortcuts to tness, owing less to failures than to the twists and turns made by genes in
order to perpetuate themselves. Why someone joins today is di erent to why someone might have joined even the same group three years ago. The idealism that helps draw someone into terrorism often conicts with the reality as experienced by the newly minted
recruit. Entrapment (in a psychological sense) develops quickly and recruits have to cope with that disillusionment one way or another.
You acquiesce to it and move on, maybe by embracing ideological content or seeking comfort in the camaraderie. Or you struggle with and try to conceal it until you can get out. Some terrorists report being disillusioned long before they have been able to disengage from terrorism. They report a sense of su ocation - being unable to
leave for fear of retaliation (either by the terrorists or by the State) and being equally afraid of their disillusionment being detected by those close to them in the movement. We need to do a better job of providing \o -ramps" not just for people who are on the road
to terrorism in the rst place, but also to those who have gotten themselves in a jam and want to get out before it's too late. We need to know their certain psychological characteristics.
Consider two questions. First: Who are you? What makes you di erent from your peers, in terms of the things you buy, the clothes ou wear, and the car you drive (or refuse to)? What makes you nique in terms of your basic psychological make-up-the part of you
that makes you do the things you do, say the things you say, and feel thethings you feel? And the second question: How do you use the internet?
Although these questions may seem unrelated, they're not. Clearly thecontent of your internet usage can suggest certain psychologicalcharacteristics. Spending a lot of late nights playing high stakesinternet poker? Chances are you are a risk taker. Like to post
videos of yourself doing karaoke on YouTube? Clearly an extravert.
Choose to play as a opposite gender character in online games? Youwant to get attention or kinder treatment from other players. Butwhat about the mechanics of your internet usage - how often youemail others, chat online, stream media, play game, or multi-task
(switch from one application or website to another)? Can thesebehaviors - regardless of their content - also predict psychologicalcharacteristics?
Assume we can monitor some people's Internet use. We didn'tknow what people were looking at on the internet (for example, depressed person - a dead giveaway), but merely how they were usingthe internet. None of the data categories gave speci c information
about what websites people were visiting, the content of their emailsor chats, or the types of les being downloaded - they simply indicated the extent to which people used di erent broad categories ofnet-based resources, as well as di erences in people's tendency touse many resources at once.
Task 1: Build a mathematical model to obtain a risk index, sowe can evaluate the situation of each monitored person use it.
Task 2: Experts use the expression big data to indicate hugeamounts of information. We'll get a lot of monitoring data, Pleasedevelop a series of statistical techniques to categorize them in ane ective, fast and automatic manner.
Task 3: If President Obama asked for your advice on ghtingterrorism, what would you tell him? What should he do about ISIS?
*Your ICM submission should consist of a 1 page Summary Sheetand your solution cannot exceed 20 pages for a maximum of 21pages.

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