Thursday, November 28, 2019

How Are Natural Disasters Socially Constructed Essay Example

How Are Natural Disasters Socially Constructed? Paper The extent to which the natural occurrence of a physical process, such as a flood or earthquake, impacts on society is constructed by that society, creating a disaster as measured by a loss of life, structures and/or money. If a similar natural event was to occur in a place deserted of human life or contact, it would not be termed a natural disaster but recognizes as the Earths natural processes and physical movement. Conversely, these processes are potentially disastrous for the Earths plant and animal biodiversity; however the Earth manages to adapt and recover. It is the culture vs.. Nature separation and the uneven distribution of power in society that has contributed to the recent increase in natural disaster occurrence. There is a separation of society and nature where humans view nature as untamed and wild, leading to their attempt to control it. This has lead to the conservative response to managing disasters we currently use that focuses solely on the physical factors. (Reference the lecture here). Vulnerability due to power inequalities within society impacts the damage caused, and to whom, from these natural hazards. The social construction of natural disasters results from power inequalities in society that leads to vulnerability of certain groups. Within society we construct categories, for example by class or gender, which are more exposed to risk (McLaughlin Dietz, 2007). Class inequity results in an uneven distribution of wealth and access to resources where lower classed groups are more vulnerable to natural hazards. As the Marxist approach puts it, underlying states of human normalization are conceived as the principle cause of disaster. (Peeling, 2001, p. 179). We will write a custom essay sample on How Are Natural Disasters Socially Constructed? specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on How Are Natural Disasters Socially Constructed? specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on How Are Natural Disasters Socially Constructed? specifically for you FOR ONLY $16.38 $13.9/page Hire Writer This resource exclusion to particular categories of people within society creates their vulnerability to risk, and in turn disaster. McLaughlin and Dietz (2007) suggest there are three dimensions that make up vulnerability including exposure, sensitivity and resilience. An example displaying the vulnerability of lower classed social categories is in North Briar, India, where floods have been managed through engineering works to create embankments. While the Government appears to be reducing the hazard, this has increased the vulnerability of the local people. Soil fertility has decreased reducing agricultural success, dangerous flash floods are occurring due to embankment walls collapsing and communities have settled on apparently safe embankments and are now highly exposed (Peeling, 2001). The natural flood hazard was dangerous, but these works by society have created a natural disaster (Peeling, 2001 Power inequalities have created this disastrous situation where lower classes are at high exposure to floods due to profit hungry management bodies. This technological approach is clearly failing but the Government and other managing groups make large profits off flood engineering works and have the power to decide how to control the issue (Peeling, 2001 This has resulted in creating possibilities for disaster from risk as these vulnerable, powerless groups are threatened by death, loss of housing and infrastructure as well as economic losses from agriculture due to flash floods on what appears to be safe embankments. They are highly exposed, sensitive to floods and have a low resilience capacity. The inequality of power in this situation has constructed vulnerable social groups resulting in the occurrence of natural starters. Society actions and decision making have created modern day disasters triggered by natural events, due to poor planning resulting in large scale death and damage. With educated planning we could avoid the disastrous consequences of many natural processes by refusing to settle in known danger spots. However, society s choice of location and design has allowed the construction of what we term natural disasters, despite the anthropogenic causes behind their disastrous affects (Peeling, 2001). Mike Davis (1995) explains how Los Angels has socially constructed the natural starters there by settling the city in a high risk area known for hazardous storms, fires, floods, drought and earthquakes. Despite historic evidence of environmental risks and recent research warning of massive earthquakes and a mega-drought, Los Angels market-driven arbitration has transgressed environmental common-sense (Davis, 1995, p. 223). The city is located centrally to many known, natural hazards; and due to the high density population and arbitration the effects of any one of these natural processes would easily create disaster. One must also take into account how both local ND national organizations will be able to assist and respond to the occurrence of disaster (Peeling, 2001 The inability of emergency crews to assist, for aid to be delivered and the aftermath of a disaster be managed, would be further human contribution to natural disaster. Metropolitan Los Angels has again constructed a socially based capacity for disaster in its city through knowingly lacking the emergency capacity to respond to the forewarned earthquake clusters and mega-droughts/floods (Davis, 1995). The economic response of the nation or area must also be examined as some mall communities rely completely on crops that lie in vulnerable positions and can not regain their economic standing after such a natural event (for example island nations in the Pacific Ocean whom are hit by a tsunami and can not cope economically for years to come). This inability to respond economically can create disastrous results that are socially constructed by the nations dependence on such risky enterprises. The ways in which society has formed itself in relation to the known risks associated with natural processes has shaped natural disasters. There are methods present to avoid such agitators effects as well as research educating us on climatic trends etc, but poor management of our communities has lead to the social creation of these events. Recent years have seen a steady rise in the event of natural disasters and while there are many factors that could have impacted this, anthropogenic interactions causing acceleration in global warming is an undeniable factor (Appears-carryings, 2003). The human induced climate change that has started to occur has resulted in changing weather patterns that can increase the frequency and intensity of weather related disasters. This hastened warming of our atmosphere has occurred due to human impacts on the Earth including the wide-spread deforestation of the planet and the increased pollutant emissions from fossil fuels due to increased arbitration and industrialization (Appears-Carryings, 2003). The resultant impact of global warming on increasing the frequency and intensity of weather related disasters displays how they have a significant human cause. Events such as storms and hurricanes have become more powerful and regular; and the human impact on these results can not be ignored.

Sunday, November 24, 2019

Single Variable Equations in Algebra ACT Math Strategies

Single Variable Equations in Algebra ACT Math Strategies SAT / ACT Prep Online Guides and Tips Single variable equations are some of the most common types of problems on the ACT math section. You must know how to set up, use, and manipulate these kinds of equations, as they are a foundational element of mathematics upon which more complicated expressions (multiple variable, quadratics, etc.) are based. So make sure you are prepared to tackle the ins and outs of single variable equations (no matter how they are presented on the ACT), before you take on some of the more complicated elements of ACT math. This guide will be your complete walk-through of single variable equations for the ACTwhat they are, how you’ll see them on the test, and how to set up and solve them. And the mystery unfolds. What Are Single Variable Equations? To understand a single variable equation, let us break it into its two components: the variable and the equation. A variable is a symbolic placeholder for a number we do not yet know. It’s very common to see $x$ or $y$ used as a variable in math problems, but variables can be represented by any symbol or letter. $x + 4 = 14$ In this case, $x$ is our variable. It represents a number that is currently unknown. An equation sets two mathematical expressions equal to one another. This equality is represented with an equals sign (=) and each side of the expression can be as simple as a single integer or as complex as an expression with multiple variables, exponents, or anything else. $({x +y^2})/14 - 65(x - 3) = 2$ The above is an example of an equation. Each side of the expression equals the other. So if we put together our definitions, we know that: A single variable equation is an equation in which there is only one variable used. (Note: the variable can be used multiple times and/or used on either side of the equation; all that matters is that the variable remains the same.) ${(x + 4)}/2 = 12$ $6x + 3 - 2x = 19$ $4y - 2 = y + 7$ These are all examples of single variable equations. You can see how some expressions used the variable multiple times or used the variable in both expressions (on either side of the equals sign). No matter how many times the variable is used, these still count as single variable problems because the variable remains constant and there are no other variables. Finding your missing variable is like finding that last missing piece of the puzzle. Typical Single Variable Equations on the ACT Single variable equations will fall into two broad categories on the ACTgiven equations and word problems. Let’s look at each type. Given Equations A given equation will provide you with the equation you need to use to solve the problem. We will go through the exact processes needed to solve this kind of problem in the next section, but for now just understand that your goal is to isolate your variable. (We will go through how to solve this question later in the guide) As you can see from this problem, the isolated variable may not be your final answer. Sometimes the question will ask you to solve for $x$, sometimes the question will ask you to solve for $x$ to a different term (as in this case, where they ask you to find $2x$). Always pay close attention to exactly what the question is asking you to find! You need to first isolate your $x$ to solve the problem, but if you stop there then you will get the final answer wrong. Word Problems A word problem describes a scene in which you must set up your own single variable equation to solve it. Again, your final answer may be the value of your variable ($x$ or $y$, etc.) or your variable taken to a different term ($2x$, $y/2$, etc.). (We will go through how to solve this question later in the guide) How to Manipulate a Single Variable Equation In order to solve a single variable equation, we must isolate our variable on one side of the equation. And the way we do this is by shifting the rest of our terms to the other side of the equation. In order to shift our terms (numbers), we must therefore cancel them out on their original side by performing the opposite function of the term. Opposite function pairs are: Addition and subtraction Multiplication and division So if we have a term on one side that has a plus sign (addition), we must subtract that same amount from both sides. $x + 2 = 6$ $x + 2 - 2 = 6 - 2$ $x = 4$ If we have a term that is multiplied, we must divide that same amount from both sides. $3x = 18$ ${3x}/3 = 18/3$ $x = 6$ And so on. Whatever you do on one side of the equation, you must do on the other. This cancels out like terms and essentially moves your terms from one side of the equation to the other. Single variable equations are all about maintaining balance. Steps to Solving a Single Variable Problem Let us take a typical variable expression and break it into the steps needed to solve it. $3y - 10 + 2y = 15$. Find $y$. 1) Combine like terms If there is more than one term with a same variable, we must combine them in order to ultimately isolate that variable. We can add or subtract terms with a same variable in the same way we can any other numbers. $3y - 10 + 2y = 15$ Here we have a $3y$ and a $2y$. They are both positive, so we add them together. $3y + 2y = 5y$ So now our equation looks like this: $5y - 10 = 15$ 2) Isolate the term with your variable Once we have combined our variables, we must isolate the variable term. If the term is simply the variable itself (e.g. $y$), then we can skip this step. But since our term her is $5y$, we must isolate the whole term first. $5y - 10 = 15$ So we must add 10 to either side of our equation. Why? Because we have a negative 10 and addition is the opposite of subtraction. And we must do it to either side to cancel out the 10 on the first expression in order to isolate our variable. $5y - 10 + 10 = 15 + 10$ $5y = 25$ 3) Isolate your variable Now that we’ve isolated our term ($5y$), we can further isolate the variable itself. Again, we perform an opposite function of the term. In this case, we have $5y$, which uses multiplication. In order to isolate the variable, we must therefore use division (the opposite of multiplication) by dividing on both sides. $5y = 25$ ${5y}/5 = 25/5$ $y = 5$ 4) Double-check your variable by plugging it back in Now that we’ve solved for our variable, let us check to make sure it is correct by plugging it back into the original equation. $y = 5$ $3y - 10 + 2y = 15$ $3(5) - 10 + 2(5) = 15$ $15 - 10 + 10 = 15$ $15 = 15$ Success! We have correctly isolated the variable and found its value. 5) And, finally, double-check to make sure you are answering the right question! In this case, we are done, because our initial question asked us to find the value of $y$. But you must always double-check to make sure you are answering the right question. If they had asked us the value for $5y$ or $y/3$, then we would have gotten the answer wrong if we had stopped here at $y = 5$. Always double-check that your variable is correct and that you are answering the question the test is asking you to answer. Now let’s try it again with our problem from earlier: We have $7 + 3x = 22$ and we must isolate our variable in order to ultimately find $2x$ Step 1, combine like terms: There are no like terms to combine, so we can skip step 1. Step 2, isolate variable term: $7 + 3x = 22$ $7 - 7 + 3x = 22 - 7$ $3x = 15$ Step 3, isolate variable: $3x = 15$ ${3x}/3 = 15/3$ $x = 5$ Step 4, double-check answer: $7 + 3(5) = 22$ $7 + 15 = 22$ $22 = 22$ Success. But wait! We’re not done just yet. Step 5, look at what the final question is asking: We must finish the question by finding $2x$ $x = 5$ $2(5) = 10$ So our final answer is G, $2x = 10$ It may appearthatperforming a single variable equation requires a lot of steps, but the more you practice, the easier and more instinctive this process will become. Test Your Knowledge 1) 2) 3) 4) 5) Answers:C, G, B, G, E Answer Explanations: 1) Ms. Lewis begins by driving 900 miles at 50 miles per hour and we want to find out how much faster she must go to travel the same amount of miles in three hours less time. Because she is driving the same amount, we can set these terms equal. We are also only working with the variable of miles per hour, so this is a single variable equation. Now, the two sides of the equation are dealing with miles and miles per hour. The first half of our equation will look like this: $(900/50) - 3$ Why? Because Ms. Lewis is driving 900 miles at 50 miles per hour, so we need to divide the miles by mph in order to find out her travel time. And then we must reduce that amount by 3 because we are told that her new travel time will be 3 miles less than that. This means that the other half of our equation will look like this: $900/x$ Why? Because we know that the number of miles she drives will be the same, but our unknown is her miles per hour. Now let's put them together and solve for our variable. $(900/50) - 3 = 900/x$ $18 - 3 = 900/x$ $15 = 900/x$ Now we must isolate our $x$ value. Because it is acting as a denominator, we must multiply both sides of the equation by $x$. $x * 15 = (900/x) * x$ $15x = 900$ Now, we can divide both sides by 15 in order to isolate our $x$ value. $15x = 900$ ${15x}/15 = 900/15$ $x = 60$ Finally, let us plug this value back into our original equation to double-check our answer. $(900/50) - 3 = 900/x$ $(900/50) - 3 = 900/60$ $15 = 15$ We have successfully found our $x$ value, which is the new mileage per hour that Ms. Lewis must travel. But wait, we're not done yet! The question asked us to find out how much faster she must drive, not the new miles per hour at which she must travel. This means we must take the difference of the original miles per hour and the new miles per hour. $60 - 50 = 10$ She must drive 10 miles per hour faster in order to drive the same amount in three hours less time. So our final answer is C, 10. 2) Here we have two cable companies and we are told that we must solve for when their rates are equal after an equal number of months. That means we have a single variable (the number of months) and we have an equation because we are setting each side equal (since the question specifies that their prices will be equal after an unknown number of months). Uptown Cable has a flat fee of 120 dollars and an additional fee of 25 dollars per month. The flat fee will be unchanged (it only happens once), but the 25 dollars will be affected by the number of months. Since the number of months is our unknown variable, let’s give it a value of $x$. So our first expression will look like this: $120 + 25x$ Now Downtown Cable has a 60 dollar flat fee (occurs only once) and a 35 dollar per month fee. We are trying the find the equal number of months for a Downtown Cable package and an Uptown Cable package, so our variable, $x$, will remain the same. So our second expression will look like this: $60 + 35x$ Now we set the two expressions equal to one another. (Why? Because we are told that the prices will be equal after a certain number of months.) $120 + 25x = 60 + 35x$ Now we solve by shifting the terms on each side of the equation. First, let us combine our variable terms by subtracting 25x from each side. $120 + 25x - 25x = 60 + 35x - 25x$ $120 = 60 + 10x$ Now, let us subtract 60 from each side. $120 - 60 = 60 - 60 + 10x$ $60 = 10x$ And finally, let us isolate our variable. $60/10 = {10x}/10$ $6 = x$ So our final answer is G, in exactly 6 months, the prices of each cable package will be equal. 3) This question relies on manipulating fractions. If this process is unfamiliar to you, definitely check out our guide to ACT fractions and ratios. If this is familiar to you, then let’s keep going. ${1/3}k + {1/4}k =1$ We must find a common denominator of the two fractions in order to combine our like terms. In this case, the least common factor of 3 and 4 is 12. (For more on this process, check out our guide to ACT fractions and ratios.) ${4/12}k + {3/12}k = 1$ ${7/12}k = 1$ Now we have a number (7) being divided by another number (12). We know that division is the opposite of multiplication, so we must multiply each side by 12. $12 * {7/12}k = 1 * 12$ $7k = 12$ And finally, we must divide each side by 7 to isolate our variable. $7k = 12$ ${7k}/7 = 12/7$ $k = 12/7$ So our final answer is B, $12/7$ 4) We have a consultant with a flat (one time) fee of 30 dollars and an additional fee of 45 dollars per hour. Because the 45 dollars is hourly, it changes based on our variable (the number of hours). We do not know the number of hours she works, but we do know that her final earnings were 210 dollars. So let’s set this up as an equation. $30 + 45x = 210$ There are no like terms, so we can start isolating our variable. $30 - 30 + 45x = 210 - 30$ $45x = 180$ ${45x}/45 = 180/45$ $x = 4$ So our final answer is G, she worked 4 hours to earn 210 dollars. 5) This is a single variable problem that can be solved in one of two waysyou can either distribute first and then solve, or you can solve without the need to distribute. We’ll go through both ways here. Solve with distributing: $9(x - 9) = -11$ First, distribute your 9 across the expression $(x - 9)$ $9(x) - 9(9) = -11$ $9x - 81 = -11$ Now, isolate your variable term as usual. $9x - 81 + 81 = -11 + 81$ $9x = 70$ And finally, isolate your variable. $9x = 70$ ${9x}/9 = 70/9$ So our final answer is E, 70/9. Alternatively, you can solve this problem without the need to distribute your 9 across the expression (x - 9) Solve without distributing: $9(x - 9) = -11$ Divide each side by 9 ${9(x - 9)}/9 = -11/9$ $x - 9 = -11/9$ Now, we must add 9 to each side. $x - 9 + 9 = -11/9 + 9$ $x = -11/9 + 9$ In order to add $-11/9$ and 9, we must give them a common denominator. Again, check out the guide on fractions and ratiosif this process is unfamiliar to you. $x = -11/9 + 9/1(9/9)$ $x = -11/9 + 81/9$ $x = 70/9$ So again, our answer is E, 70/9. Phew! I think this calls for dessert. The Take-Aways Single variations make up the backbone of many other ACT problems. By knowing how to manipulate these kinds of expressions, you’ll be able to build on these techniques to solve much more complex problems and equations. Just remember to always perform the same act to each side of the equation and save isolating your variable for last. Now take your single variable knowledge and conquer the rest of our math guides. You’ve got this. What’s Next? You’ve build up your mathematical foundation and now you’re raring to take on more. Before you start in on another guide to an ACT math topic, make sure you have a good idea of all the topics covered on the ACT math. Think you might need a tutor? Check out the best ways to shop around for a tutor whosuits your needs, whether online or in person. Taken a practice test and don’t know how you match up for schools? Make sure you have a good idea of what your ideal score truly is. And if you feel like you’ve got a handle on the math itself, but struggle with the timing, then be sure to check out on our article on how to stop running out of time on the ACT. Want to improve your ACT score by 4 points? Check out our best-in-class online ACT prep program. We guarantee your money back if you don't improve your ACT score by 4 points or more. Our program is entirely online, and it customizes what you study to your strengths and weaknesses. If you liked this Math lesson, you'll love our program.Along with more detailed lessons, you'll get thousands ofpractice problems organized by individual skills so you learn most effectively. We'll also give you a step-by-step program to follow so you'll never be confused about what to study next. Check out our 5-day free trial:

Thursday, November 21, 2019

Identifying Dina's Issues in Packer's Drinking Coffee Elsewhere Essay

Identifying Dina's Issues in Packer's Drinking Coffee Elsewhere - Essay Example She copes through displacing her mental location from her physical location, being someone else who exists outside of her own circumstance. Packer explores the experience of being eighteen and trying to understand ones own role in the world while navigating a foreign culture that emerges when leaving home and entering a university. The world of an individual changes when they leave home and enter a university setting. Most young people have lived with their family in a specific type of neighborhood for most of their lives. Even people who have moved frequently trend to gravitate towards neighborhoods that are familiar. Therefore, children have a specific perspective before they leave their family for college which is challenged by the new culture that confronts them within a university setting. For Packer, this university setting was Yale where from the beginning she felt challenged for the protective measures of distrust she had developed in her life. Her orientation involved games of trust which did not suit her perspective on others in the world which was automatically mistaken for a part of her racial identity.