SEPTEMBER 2004 1063 Which Model to Use for Cortical Spiking Neurons? Eugene M. Izhikevich Abstract—We discuss the biological plausibility and computational efficiency of some of the most useful models of spiking and bursting neurons. We compare their applicability to large-scale simulations of cortical neural networks. Index Terms—Chaos‚ Hodgkin–Huxley‚ pulse-coupled neural network (PCNN)‚ quadratic integrate-and-fire (I&F)‚ spike-timing. A. Tonic Spiking Most neurons are excitable‚ that
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In Planet of Slums‚ Davis discusses the roots of slums in relation to urban poverty in the post-modern era as well as its social‚ political‚ economical and ecological consequences. This essay might ring a bell to many as a duplication of the famous UN-HABITAT’s report in 2003 on the challenge of slums; however in my opinion‚ what Davis is attempting to do here is an exploration to the roots of urban poverty on a global scale rather than within local state governance‚ and also with references to the
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theories have been developed into the structure of the atom and what the world around us is composed of. Many scientists and philosophers have dedicated their life works into trying to understand how atoms work and what they are made up of‚ although not all theories have been accepted they have all come together to form what we know today. It all started from a Greek scientist called Democritus‚ who developed the idea that everything is made up of smaller things‚ which he named atomos. Due to his revelation
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Solar power: In fact‚ every minute‚ enough energy arrives at the Earth to meet our demands for a whole year - if only we could harness it properly. The Delhi Metro came to a standstill yet again on Tuesday afternoon after services were suspended for two hours due to collapse of the Northern Power Grid for the second consecutive day‚ causing inconvenience to commuters. As the power grid collapsed at around 1 pm‚ Delhi Metro trains stopped on tracks‚ some inside tunnels‚ due to no supply of power
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Database Models and Legacy Systems The evolution of the information age demanded robust management systems for storing large volume of data‚ efficiency in retrieval‚ and enhanced data security and sharing; hence‚ the development of databases from flat file systems. Despite this advancement in technology‚ many organizations such as Colorado Financial Reporting System (COFRS) continue to use legacy database systems. Colorado Financial Reporting System (COFRS) The Colorado Financial Reporting
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How Aging Effects the Structure of Our Skin “Age related skin changes are the result of either intrinsic factors‚ or genetically programmed changes‚ and extrinsic influence which includes the environmental wear and tear on the skin.” Some estimates state that from 80-99% of what we see on our skin as adults is the result of these environmental influences‚ in particular exposure to the sun. Some of the visible differences of aged skin are the exaggerated expression lines (wrinkles)‚ a sallow skin
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Introduction Canadian Solar was established in 2001 by Dr Shawn Qu. Canadian Solar is a leading manufacturer of PV components for solar energy. They have experienced significant growth over the past five years increasing revenues from 9.7 million to 705 million. This growth is due to the government incentive programs encouraging the adoption of solar PV (photovoltaic) technology. Canadian solar is a globally situated firm with a head office in Canada‚ branch offices in other countries and seven
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Chapter 8: The Sun & The Universe: Secrets of the Sun The sun is classified as a yellow dwarf‚ because of both its color and size. The sun is the only star in our solar system‚ and all of the planets revolve around it. The mass of the sun is equal to about one million earths. It can cause solar storms that interrupt much of our technology and means of communication. The amount of radiation that can reach Earth during a solar storm is particularly easy to reach on the north and south poles.
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| 2012 | | | [Renewable Sources of Solar Energy] | [Type the abstract of the document here. The abstract is typically a short summary of the contents of the document. Type the abstract of the document here. The abstract is typically a short summary of the contents of the document.] | Renewable Sources of Solar Energy In today’s civilization the need for energy is increasing at a sky-scraping rate. Every object requires energy to function. This is where preserving energy happens to
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oxygen which the most important air in our life. He was one of the most influential chemists in eighteenth century. He was born in 1733. He was born in Birstall‚ West Yorkshire. His family was successful wool-cloth maker. He lived with his grandmother‚ but he could not live with his mom. He came back to home after his mom died. He suffered from his serious ill. He had good education in language‚ history‚ and education. He was awarded for his abilities of education and literacy. He spent most of his
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