GEO 301 Lecture Notes - Lecture 9: Census Tract, Market Segmentation, Experian

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emeralddonkey1

17 Sep 2012

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L9: geodemographics and geodemographic profiles: market segmentation, providers of commercial geodemographics cluster systems, geodemographics methodology, critiques of geodemographics, market segmentation. Basic assumptions: tobler"s first law of geography things are similar, but close things are more similar than distant things similar people with similar tastes cluster in neighbourhoods. Where you live determines whether or not you are likely to be a good market prospect clustering. What is the purpose of segmentation? large enough for marketing purposes homogeneous, targetable and reachable populations identify areas with clusters of customers which are: used in many business strategies customer profiling, cross-selling, site selection, strategic planning, media buying. Types of market segmentation cluster systems: simple demographics, special interest demographics. Simple demographics clusters people by a number of demographic variables available from the census and other sources such as age, sex, language and ethnicity, occupation, educational attainment, etc: may or may not include a geographic component.

Related Questions

Helium is very common in the Sun and calcium is rare. Why arehelium lines weak and calcium lines strong in the visible spectrumof the Sun?

How would a star regain its state of equilibrium if the energygeneration rate of a star were to become slightly smaller than itsequilibrium?

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Introduction. Telescope time is a valuablecommodity in astronomy, so astronomers plan their observationscarefully. One of the first steps is to choose what type ofobservation to make. Recall that three basic types of astronomicalobservation are imaging (taking a photograph of anobject), spectroscopy (spreading an object's light into aspectrum), and timing (measuring how an object's lightvaries with time).

Part A: Sort each of the astronomical questionsbelow into the appropriate bin based on the type of observation youwould need to perform to answer it.

Three Categories: Imagine, Spectroscopy andTiming

The Questions:

1. "What are the major surface features of Mars?"

2. "What is the temperature of Jupiter's atmosphere?"

3. "Does the star Mira vary in brightness?"

4. "How large is the Andromeda Galaxy?"

5. "What is the chemical composition of the Crab Nebula?"

6. "Is the X-ray emission fro the galactic center steady orchanging?"

7. "Is the star Vega moving toward us or away from us?"

8. "Are stars in the Orion Nebula surrounded by dusty disks ofgas?"

------------------------

Introduction: Different telescopes areoptimized for observing different wavelengths of light, so anotherconsideration in planning an observation is deciding what type oftelescope to use.

Part B: Each of the following statementsdescribes an astronomical measurement. Place each measurement intothe appropriate bin based on the type of telescope you would use tomake it.

Three Categories: Infrared Telescope, VisibleLight Telescope and X-Ray Telescope

The Statements:

1. Study a dense cloud of cold gas in space.

2. Measure the brightness of a star that is similar to ourSun.

3. Observe the hot (1-million K) gas in the Sun's corona.

4. Obtain a spectrum of sunlight reflected by Mars.

5. Determine the surface temperature of Venus.

6. Look for high-energy radiation from a supernova.

Thank you so much to whoever helps!

A single slit with a width of 0.100 mm is illuminated by lightwitha wavelength 610 nm.
(a) What is the angular location of the firstdiffractionminimum?
? rad
(b) What is the angular location of the seconddiffractionminimum?
? rad
(c) Diffraction maxima occur approximately halfway betweenadjacentdiffraction minima. Using your results from (a) and (b),calculatethe approximate angular location of the first diffractionpeak tothe left or right of the central diffraction peak.
? rad
(d) To obtain the "exact" locations of diffraction maxima, valuesofalpha are required at which intensity maxima occur for asingleslit. An equation for these values of alpha are obtainedbydifferentiating Eq. 36-5 with respect to alpha and equatingtheresult to zero. Two equations are obtained: (1) The firstequation,sin / = 0, is the condition that must be satisfied whenthere is adiffraction minima. (2) The second equation of the form(sin )n1(cos )n2 = ()n3 is the condition that must be satisfiedwhen thereis a diffraction maxima. What are the values of theintegers n1, n2and n3, at least one of which is negative?
n1= ?
n2= ?
n3= ?
(e) It is not possible to exactly solve the equation fordiffractionmaxima to obtain a general formula for the location ofalldiffraction maxima; however, the values of alpha that satisfythisequation can be found graphically by plotting the curve y =(sin )n1(cos )n2 and the curve y = ()n3 and determining where thetwo curvesintersect. The smallest two values of alpha that satisfytheequation are alpha = 0 and alpha = 4.4934. The first solutionisexact, and the second and all others are only approximate. Usingthesolution alpha = 4.4934, solve for the angular location thetaof thediffraction peak adjacent to the central peak.
? rad
(f) Calculate the percent error between the actual value ofthetacalculated in (e) and the approximate value calculated in(c).
????%

I have a and b need help with the rest. This is a modifiedversionof Chap. 36 #15. Thanks

GEO 301 Lecture Notes - Lecture 9: Census Tract, Market Segmentation, Experian

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