EnergySniffer: Home Energy Monitoring System using Smart Phones Mostafa Abdulla Uddin Tamer Nadeem Department of Computer Science Old Dominion University Department of Computer Science Old Dominion University muddin@cs.odu.edu nadeem@cs.odu.edu ABSTRACT Tracking home energy usage for each individual running machine is a prerequisite for making energy conservation and management efficient. In order to meet the requirement for monitoring home energy consumption‚ several industries
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History of Solar Energy 1767‚ First Solar Collector In the year 1767 a Swiss scientist named Horace-Benedict de Saussure created the first solar collector – an insulated box covered with three layers of glass to absorb heat energy. Saussure’s box became widely known as the first solar oven‚ reaching temperatures of 230 degrees fahrenheit. 1839‚ Photovolataic Effect Defined In 1839 a major milestone in the evolution of solar energy happened with the defining of the photovoltaic effect. A French
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LED LIGHTS A Museum Exhibit Case Study By Kathy Andal September 6‚ 2013 In April 2014‚ the Durango County Museum of History installed a small exhibit titled Our heritage: Pictures from the past. The collection consists of five daguerreotypes and several silver albumen prints. A study was made to measure the benefits and costs of using LED. lights instead of traditional halogen lamps. RISKS OF LIGHTING HISTORIC PHOTOGRAPHS All lighting harms photographs. (Lavedrine 2003) It is the task of
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opposes the manner in which the store manager treated the three girls that entered his store wearing just bath suits. He ends up quitting his stable job‚ but the girls he was defending do not notice or appreciate his actions. The same happens to Nea in "Saving Sourdi" by May-Lee Chai who ends up being rejected by her sister despite trying to protect her on multiple
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though the United States is less than 5% of the world ’s population‚ it uses more than 30% of the world ’s resources (Society and Technological Change‚ 88).While the three fossil fuels‚ petroleum‚ coal‚ and natural gas‚ give us enormous amounts of energy; the excessive use of them greatly alters the environment. National Environmental Trust reports that the burning of fossil fuels contributes to global warming. The burning of these fusels increases the amount of green hose gas levels in the atmosphere
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4*(1/x)=(5/2)*(1/x)+3 4/x=(5/2x)+3 (8/2x)=(5/2x)+3 (8/2x)-(5/2x)=3 (3/2x)=3 x=1/2 The answer would be x=1/2 3. John had $30‚000 to invest. He invested part of this money in bonds paying 12% annual simple interest and the rest of the money in a savings account giving 4% annual interest. At the end of the year‚ he received $2‚400 as extra income. How much money did John place in each investment? .4x+.12(30000-x)=2400 .04x+.12(30000)-.12x=2400 .04x+3600-.12x=2400 .12x-.04x+3600=2400 .08x+3600=2400
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Benefits of LED Lighting * extremely energy efficient‚ consuming up to 90% less power than incandescent or halogen bulbs and up to 50% less than fluorescent or CFL. * less heat emission‚ therefore loading on air conditioners is reduced resulting in further electricity savings. * long life span thus reducing maintenance and lamp replacement costs and lower long-term operating costs. * environmentally friendly as they do not contain toxic mercury or any other hazardous materials. Secondly
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people have been searching for ways to save time in the hustle and bustle of their everyday lives in order to get the most time that they can out of one day. One such method that has been implemented around much of the world is that of Daylight Savings Time‚ or DST‚ in order to maximize the amount of daylight during different seasons. The creation of DST‚ just like the usage of other controversial solutions to solve societal problems‚ has sparked a debate about whether the system actually provides
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Rohan Benda Mrs. Zingariello English 1 7 April 2017 Daylight Savings Daylight savings was an idea thought up during the late 19th century. It was used by many countries‚ mostly to make better use of daylight. How it works is the government moves an hour of daylight from the morning to the evening. The theory is that this allows people to be more productive during the evening. I do not think the US should practice daylight savings anymore. It is an outdated practice many countries do not use
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Informative Speech April 24‚ 2011 Energy Efficiency There are various sources of energy available for use. However‚ energy is a limited and sparse resource that is not in abundance at all places. There is an ever rising need for more energy‚ but the energy supply and resources are limited. As a result‚ people have to develop means that can enable them to survive with the small amount of energy that is available. The proper and sustainable use of energy is known as energy efficiency. Efficiency is attained
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