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geography
/in Questions Uploads /by adminExplain how geography has contributed to the development of diversity in the context of different cultures. Draw on at least two of the readings from this week. Provide an example of a specific population and describe how the population was diversified through geographical drivers. These can include politics/wars, land formations, trade, population migration, and so forth. Your post should be a minimum of 250 words.
Once you have posted your initial post, respond to at least two of your classmates. Compare and contrast your answers. What do you like about their explanation, and what would you add/change? How are the populations similar, and what is unique about the circumstances of each population? How they were influenced by the geographical drivers?
List of reading sources
Website: Geographic Origin of Diversity http://www.pbs.org/race/004_HumanDiversity/004_01-explore.htm
Review the timeline. Be sure to click on the “Read More” section of these tabs under Geographic Origin: “Early Human Migration,” “Trace & Spread of Disease,” “The Mongol Expansion,” “World Slave Trade,” and “Recent Global Migration.”
Article: Ancient Migration: Coming to America http://www.nature.com/news/ancient-migration-coming-to-america-1.10562
This article discusses the Clovis hunters and how people often think of them as the first to cross the Arctic into America. As it turns out, they were not the first. Read this article and find out the real story behind the Clovis hunters.
Podcast: Science Magazine Podcast: The Peopling of the Aleutians (41:12) http://podcasts.aaas.org/science_podcast/SciencePodcast_120113.mp3
In this podcast, Sarah Crespi interviews Michael Balter, the author of “The Peopling of the Aleutians.” Michael Balter used the Aleutians to study human migration patterns. This interview starts about 20 minutes into the podcast. A transcript is also available.
Video: The Incredible Human Journey (59:04) http://www.dailymotion.com/video/x1ip64x_bbc-the-incredible-human-journey-1-of-5-out-of-africa-arc-avi_travel
This BBC documentary discusses where people come from and how they have populated the world. There are multiple episodes to choose from. The captioned version of this video can be found here.
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Landrum Airlines
/in Questions Uploads /by adminLandrum Airlines flies the route between Chicago and Pittsburgh. The distribution is normal with a mean number of passengers per flight of 160 and a standard deviation of 20. The aircraft used for the route has 200 seats.
The airline must sell 150 seats to break even. On what percent of flights does the airline make money?
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QSO 520Module FiveHomework Questions
/in Questions Uploads /by adminQSO 520Module FiveHomework Questions
- (P5-18)A food distribution company ships fresh spinach from its four packing plants to large East-Coast cities. The shipping costs per crate and the supply and demand are shown in the table below.
- Formulate a model that will permit the company to meet its demand at the lowest possible cost.
- The company wishes to spread out the source for each of its markets to the maximum extent possible. To accomplish this, it will accept a 5% increase in its total transportation cost from part (a). What is the new transportation plan, and what is the new cost?
| MARKETS | |||||
| Packing Plants | Atlanta | Boston | Charlestown | Dover | Supply |
| Eaglestown | $6.00 | $7.00 | $7.50 | $7.50 | 8,000 |
| Farrier | $5.50 | $5.50 | $4.00 | $7.00 | 10,000 |
| Guyton | $6.00 | $5.00 | $6.50 | $7.00 | 5,000 |
| Hayesville | $7.00 | $7.50 | $8.50 | $6.50 | 9,000 |
| Demand | 8,000 | 9,000 | 10,000 | 5,000 |
- (P5-32) A security firm needs to connect alarm systems to the firm’s main control site from five potential trouble locations. Since the systems must be fail-safe, the cables must be run in special pipes. These pipes are very expensive but large enough to simultaneously handle five cables (the maximum that might be needed). Use the minimal-spanning tree model to find the minimum total length of pipes needed to connect the locations shown in Figure 5.22. Node 6 represents the main control site.
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