Energy Efficient Building Windows Energy efficient windows have multiple layers of glass. The reason for this is because the more layers of glass you have the better it insulates the house. Three or four layers of glass are one of the best because you have more airspace in between layers. A smaller airspace doesn’t insulate the building as well as a thicker airspace would. The thickest an airspace should be is 1 inch because any thicker than that will cause the glass of the window
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Creating efficient frontiers using excel. Suppose we have 3 risky assets whose net return has the mean vector and variancecovariance matrix given below: Asset Mean VarianceCovariance Matrix 1 2 3 0.06 0.12 0.03 1 0.3 0.3 0.3 1 0.3 0.3 0.3 1 Weights Ones Mean Portfolio Return 1 1 1 0.176666122 Portfolio Portfolio Portfolio Variance STD Constraint 2.42961 1.558721 1 0.079372 1.603166 -0.68254 To model the portfolio choice problem‚ I begin by highlighting the mean vector and giving
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such as red cod‚ spotty and kahawai challenge them. There are predators such as dolphins‚ sharks and also people. Their gas exchange system has to be efficient for them to be able to compete with those fish and escape from predators. Fish live in an acquatic environment. Water contains a less % 02 than the air so fish mush have a very efficient gas exchange system. This has prompted the development of the gill system. Air has 20% 02‚ water has much less. The gills are supported by the gill arch
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are traded in the market is one of the major factors in influencing the movements of stock market. In the stock market‚ a securities price tends to move rise and fall depending mainly on the availability of the information. The stock prices in the efficient market correspond to available information and therefore register any rise or fall mainly when recent and unpredictable information is available. The up and down in the security prices largely depends upon the advantages and disadvantages associated
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Their plan has no class difference. They spend more times in the air rather than other airlines. They make very simple to their customers. Southwest has never offered meal service. They provide only cookies and beverage. Offering meal service can be $40 in their price. 2. What are the foundations of Southwest’s competitive advantage? Answer: Even though Southwest had many basics for success‚ a noticeable competitive advantage could be found in its cost structure. They really handled that issue very
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Solar Panels- They make electricity so you don’t have to buy it. You don’t have to use coal/oil/something else to create electricity‚ so it saves fossil fuels also. Tankless Hot Water Heater- Heating water is the 2nd highest energy use in the home. This device saves energy by eliminating the storage tank for hot water that has to be constantly heated. You only heat the water you use. Florescent Light Bulbs- These use less electricity than an incandescent bulb for the same amount of light
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Instructions for Efficient-Frontier Construction a. Estimation The goal is to obtain the raw ingredients – expected returns‚ standard deviations and correlations. Historical data are used for this purpose. As a rule of thumb‚ five years of daily data are probably right (one year should be the absolute minimum). Keep in mind the following: 1) make sure to use the adjusted close prices to calculate returns (so that you won’t have large‚ spurious negative returns due to dividend payments or splits)
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In 1993‚ Southwest (SW) was faced with the decision of how to schedule two new uncommitted planes‚ and it evaluated three options for enabling either internal or external expansion—adding a new segment direct from Phoenix to Detroit‚ entering the Dayton market to contribute to growth goals for Midway‚ or entering an entirely new geographic market in Baltimore which would begin creating a presence for SW on the East Coast. SW sought conservative and controlled growth‚ and typically prioritized options
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SOUTHWEST’S STRUGGLE TO GANIN A MARKET FOOTHOLD In June 1971‚ Southwest initiated its first flights with a schedule that soon included 6 round-trips between Dallas and San Antonio and 12 round-trips between Houston and Dallas. The introductory 20 one way fares to fly the Golden Triangle‚ well below the 27 and 28 fares charged by rivals. attracted disappointingly small numbers of passengers- some days the total for all 18 flights would be less than 250 people. Money for parts and tools was so
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Tommy Johnson Chapter 13 is titled “Scheduling Operations” and it is mainly about scheduling decisions for batch operations and how they deal with the allocation of scarce resources to jobs‚ activities‚ tasks‚ or customers. “Scheduling results in a time-phased plan‚ or schedule‚ of activities. The schedule indicates what is to be done‚ when‚ by whom‚ and with what equipment. Scheduling should be clearly differentiated from aggregate planning” (Schroeder‚ pg. 293). Chapter 14 is titled “Project
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