GEO 301 Lecture Notes - Lecture 2: Distance Decay, Demand Curve, Consumer Behaviour

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emeralddonkey1

17 Sep 2012

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Week 2: spatial concepts and the value of the geographic perspective. Opening new stores usually owned by the company. Usually slow however, financing can speed it up. Contagious diffusion: intensive development in a particular region expands outward into neighbouring locations. Coverage throughout hierarchy within an area: hierarchical/ contagious combination. Contagious diffusion from a number of higher order centers. Generally requires organization to have reached a large size. Companies that usually use this strategy have a large capital. Mergers: two or more companies combine to create a new company, relative equality between firms. Acquisitions: purchase of over 50%of shares in one company by another company, purchased company disappears as subsidiary. Takeovers: also involve one firm purchasing controlling shares, however the purchased firm stays in existence. Difficult to break into markets in new countries with organic growth. Companies that use this strategy can acquire another company at any time.

Related Questions

Original: The standard kilogram is in the shape of a circularcylinder with its height equal to its diameter. Show that, for acircular cylinder of fixed volume, this equality gives the smallestsurface area, thus minimizing the effects of surface contaminationand wear.

Modified: #18 is a classic problem which usually goes by the title:design the soda can that has the smallest surface area for a givenvolume. You'll need to use some info on platinum from the back ofthe book (iridium is small taters, here). This is a big project inmiddle school so there should be plenty of graphing solutions forthis problem on the internet. We'll solve it with calculus in classand the just-started-calcs will see some fun math. Read abouthydrogen diffusion into metals to see that even solid platinumgains weight in the real world. For that reason, the InternationalStandard kilogram remains forever entombed inside several highlyevacuated bell jars. Relax, its early.

Tiny solid and liquid particles suspended in the atmosphere are called aerosols. Windblown dust, sea salts, volcanic ash, smoke from wildfires, and pollution from factories are all examples of aerosols. Depending upon their size, type, and location, aerosols can either cool the surface, or warm it. They can help clouds to form, or they can inhibit cloud formation. And if inhaled, some aerosols can be harmful to people's health.

These maps show average monthly aerosol amounts around the world based on observations from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite. Satellite measurements of aerosols, called aerosol optical thickness, are based on the fact that the particles change the way the atmosphere reflects and absorbs visible and infrared light. An optical thickness of less than 0.1 (palest yellow) indicates a crystal clear sky with maximum visibility, whereas a value of 1 (reddish brown) indicates very hazy conditions.

High aerosol amounts are linked to different process in different places and times of year. High aerosol amounts occur over South America from July through September. This pattern is due to land clearing and agricultural fires that are widespread across the Amazon Basin and Cerrado regions during the dry season. Aerosols have a similar seasonal pattern in Central America (March-May), central and southern Africa (June-September, and Southeast Asia (January-April).

In other cases, however, aerosol concentrations are not related to fires. For example, from May through August each year, aerosol amounts rise dramatically around the Arabian Peninsula and nearby oceans due to dust storms. Elevated aerosol amounts nestle at the foothills of the Himalaya Mountains in northern India in some months, and linger over eastern China for much of the year. These elevated aerosol amounts are due to human-produced air pollution.

What is the most likely source of the high concentration of particulates that appear off the coast of northwestern Africa?

What is the most likely source of the high concentrations of particulates over central Africa and central South America?

What is the most likely source of the high concentrations of particulates over eastern China?

apricottermite85

Could you please proofread and correct scientifically andgrammatically my work, thanks ^_^

Here itis:

The percentage error was found to be 0.186% and 6.66%respectively.

This implies that the predicted value of the freefall accelerationis fairly accurate while the predicated value of deceleration isnot as much. The encountered errors were due to severalexperimental and human limitation was that the experiment involved.The experimental limitation was due to the uncertainty of theclinometer which was Â± 0.5o.

I.e. In our calculation, a difference of 0.5o can lead to adifference of 40 - 80 cm in height as shown below:

The human limitations was due to the human eye being unable todetect the exact point on the track at which the gondoladecelerates. This is because the braking happened very quickly.This adds an uncertainty to the location of deceleration when theangels are being measured.

In addition, the human ability cannot decide on the exact period oftime at which the gondola freefalls or decelerates. This is due tothe human reaction speed being unable to exactly determine thestart time of the momentary freefall and deceleration. The timetaken for humans to react cannot be measured thus it cannot besubtracted from the findings to get an accurate timing.

All of these limitations that have affected the accuracy of theresults could be avoided to some extent by marking the exact zonesrequired on the track of the giant drop as well as using anelectronic angle measurer to measure the angles . Additionally, theusage of an electronic timer to measure periods of the freefall anddeceleration is also suggested.

During the analysis, finding an average to the deceleration in theaccelerometer reading (using Logger Pro) was only estimated usingthe human naked eye. This is because an average could not be takenelectronically. Thus, there is also some uncertainty involved inthe theoretical value.

NOTE:

The value for freefall acceleration obtained from thevideo-analysis technique was 9.754 Â± 0.3237 m/s2. 9.754 m/s2 has apercentage error of :
0.469%

This value indicates it is fairly accurate and can be used as aconforming result to the theoretical value. The error involved isdue to the fact that the video was shaking, thus plotting thevelocity/ time graph of the gondola at different times wasnegatively affected; although the axes was roughly re-set at everyframe.

GEO 301 Lecture Notes - Lecture 2: Distance Decay, Demand Curve, Consumer Behaviour

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