Suburban Sprawl (Environmental Issue) Essay Example | Topics and Well Written Essays - 1000 words

Suburban Sprawl (Environmental Issue) - Essay Example These hazards being talked about refer not to only to body health issues but a rapid jump in mental health issues, prompting the former vice president of the U.S Al Gore to comment that the urban spread is like â€Å"cookie-cutter monster.†(Brooking Inst, 1998). While supporters of urban lifestyles contend â€Å"consumers prefer lower density neighborhoods and that sprawl does not necessarily increase traffic.† (Moore, Henderson, 1998). Nevertheless there is evidence that urban sprawl is one of the primary contributing factors to the specter of inner city degeneration. By pulling economic resources out of communities that are already existing and diffusing it into new and unconnected developments away from the current core, older communities get neglected and are led to ruin. These new developments are subsidized heavily to create newer roads, water and sewer infrastructure, new schools and enhanced spending on police and fire protection. While urban spread directly inf luences new lawns using ever more water and the use of chemical fertilizers as well as pesticides, it displaces native plants, which have not needed constant watering. It could be concluded that Sprawl wastes tax payers’ money With the population of the world exceeding 6 billion already and progressing toward doubling by the 22nd century, it is estimated that 95% of the new inhabitants of the planet earth will be living in urban areas. When compared to the fact that only 15% of the world lived in urban areas as recently as 1990, the task to manage urban sprawl is both vital and urgent. If not the exponential growth in urban dwellers combined with Socio-economical, geopolitical factors, with the certainty of limited land availability and in -efficient planning is certain to create cities that devour land used for other purposes historically directly influencing equally important aspects such as food security. Combating urban sprawl has two major forms of endeavor both, which i nclude detailed planning. â€Å"The first, the French/British/European tradition, considers urban planning a matter of public health and focuses on strong land- use regulation, public-sector investment, and civic design. The second tradition, born in North America, focuses on zoning and subdivision regulations within a context of strong private property rights† (Calthorpe, 2001)). Peter Calthorpe a New Urbanism thinker and architect illustrates the differences in these two styles by flavoring the European model a more ecological model and the North American planning model a more mechanically motivated model. The European model appears to be the antecedent to the concept called smart growth, and the other of developing efficiencies through zoning. The search for solutions to urban sprawl has given birth to various special-interest groups that promote a concept termed SMART growth at all levels federal, state, and local government. This might look nostalgic with a promotion of return to the city lifestyles of the last two centuries. Living in smaller apartments or smaller land plots with the emphasis on limiting transportation to bicycles or simply walking. Smart growth can be defined as the prevention of urban sprawl through meticulous planning with associated restriction to

Endurance in Night by Eli Wiesel Essay -- essays research papers

In the Face of Adversity   Ã‚  Ã‚  Ã‚  Ã‚  Ãƒ ¢Ã¢â€š ¬Ã…“Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no help at all.à ¢Ã¢â€š ¬? Dale Carnegie believed that perseverance could overcome even the harshest obstacles. Perseverance is inspired by a purpose, an unsatisfied drive to achieve a goal. During a cataclysmic event, only people with a purpose endure.   Ã‚  Ã‚  Ã‚  Ã‚  In Night, Eliezer endures the Holocaust with a purpose to keep his father alive. He is a 15 years old boy when he and Chlomo began their journey through the perilous camps of Auschwitz, Buna, and Buchenwald. Eventually, Eliezer loses his faith in God but not in his father. à ¢Ã¢â€š ¬Ã…“He had felt that his father was growing weak, he had believed that the end was near and had sought this separation in order to get rid the burden, to free himself from an encumbrance à ¢Ã¢â€š ¬Ã‚ ¦ My God, Lord of the Universe, give me strength never to do what Rabbi Eliahouà ¢Ã¢â€š ¬Ã¢â€ž ¢s son has doneà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬?(87). The motivation Eliezer has to endure is to keep his father alive. Even though his father is a constant burden, Eliezer is determined never to desert his father like Rabbià ¢Ã¢â€š ¬Ã¢â€ž ¢s Eliahouà ¢Ã¢â€š ¬Ã¢â€ž ¢s son attempts. Even when Chlomo becomes sick with dysentery, Eliezer stays by his side. He gives his father his own soup, forfeits his own bread, and even tries to get a doctor to help. à ¢Ã¢â€š ¬Ã…“For a ration of bread, I managed to change beds with a prisoner in my fatherà ¢Ã¢â€š ¬Ã¢â€ž ¢s bunkà ¢Ã¢â€š ¬Ã‚ ¦Ãƒ ¢Ã¢â€š ¬? (1...

Performance and Safety of Hydraulic Turbines

Research Paper M.V. Sai Ram AP17110020010 Branch: ECEHYDRAULIC TURBINES:Abstract: The first part of the paper contains the choice of small turbines for run of the river power plants. Then a discussion is given on the optimization of the performance of different types of large turbines. Finally a discussion on the safety and necessary maintenance of turbines is given with special attention to bolt connections.A set of empirical equations has been developed which defines the peak efficiency and shape of the efficiency curve for hydraulic turbines as a function commissioning date for the unit, rated head, rated flow, runner speed, and runner throat or impulse turbine jet diameter. The aim of this investigation was to develop an environmentally friendly nano -hydraulic turbine utilizing waterfalls. A model of an impulse type hydraulic turbine constructed and tested with an indoor type waterfall to arrive at an optimum installation condition. Effects of an installation parameter, namely distance between the rotor and the waterfall on the power performance were studied. The flow field around the rotor was examined visually to clarify influences of installation conditions on the flow field. The flow visualization showed differences of flow pattern around the rotor by the change of flow rate and rotational speed of the rotor.Every single turbine is custom-designed specifically to meet the requirements of a hydroelectric power plant. Performance of a designed turbine is validated, to some extent, by computational fluid dynamics simulations. Field performance testing of hydraulic turbines is undertaken to define the head-power-discharge relationship that identifies the peak operating point of the turbine. This relationship is essential for the efficient operation of a hydraulic turbine. The art of hydraulic turbine design never stands still but always progresses. In recent years major emphasis has been on the materials of construction and on such features of design as will reduce maintenance work and costly outages in the field.LimitationsHydro power plant or we can say that hydraulic turbines are widely used from the last decades. It is an efficient renewable energy source. There are many up and downs. Hence there Some limitations as shown in below,1.It is a renewable energy source. Water energy can be used again and again.2.the running cost of turbine or less compare to other.3.It has high efficiency.4.It does not pollute environment.5.It is to maintain.

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