science and computers - lec10
science and computers - lec10
... an ac- curate description of individual earthquakes – merely what happens to very many of them. 10 Lec10 • Self-organized critical phenomena • Earthquakes, sand piles 1 Self-similarity and criticality We ... If so topple the sandpile by some amount (say 2 grains) and add to next 2 neighbors. – Recheck stability of all points and re- peat until no further toppling • Add more sand and...
Ngày tải lên: 28/04/2014, 14:02
science and computers - lec 5
... transients seen - remnant of decay- ing natural oscillation • Small drivi ng force, small amplitude, mo- tion in step with driving force - like hamr- monic case • Larger F – apparently random or chaotic behavior ... (Very)-simplified model of convectiv e fluid flow – container containing fluid with bot- tom and top surfaces held at different tem- peratures. • Three variables x, y, z corr...
Ngày tải lên: 28/04/2014, 14:02
science and computers - lec 6
... example of chaotic dynamical sys- tem • Exhibits period doubling approach to chaos • In chaotic regime motion confined to strange attractor • Fractal object - dimension non-integer 2 Model Model for ... looks random yet cannot be. • Some regions in 0 < x < 1 never visited! • Set of points is a fractal. Such an object looks same under magnification. • Not a standard geometrical object...
Ngày tải lên: 28/04/2014, 14:02
science and computers - lec 9
... boundary between the two regions in x (diverging and non-diverging) is called the Julia set of the map and contains seem- ingly 2 points x = − 3 2 and x = 3 2 • Things much more interesting if we ... iteration of the map ? • The region of convergence is called the filled-in Julia set B and the boundary be- tween between diverging and non-diverging sets is the true Julia set of the ma...
Ngày tải lên: 28/04/2014, 14:02
science and computers - lec11
... blocks sliding • At some point one block slips - and will try to pull others along with it – an Earth- quake. • Eventually friction slows the blocks to rest again - the Earthquake is over. • Measure total ... distribution of Earthquake sizes (Gutenberg-Richter) • Today we will try a more realistic simu- lation which incorporates a model of the frictional and elastic forces acting...
Ngày tải lên: 28/04/2014, 14:02
science and computers - lec12
... quantum me- chanics – Fields and waves 2 Phase transitions • Many systems composed of (very) many degrees of freedom exhibit phase transi- tions • These are abrupt changes in the macro- scopic ... driven by the system exhibiting cor- relations between widely spaced elemen- tary magnetic domains. 6 Critical exponents • Specific Heat C = ∂U ∂T . Near phase transi- tion C ∼ (T − T c ) −α • Magn...
Ngày tải lên: 28/04/2014, 14:02
Báo cáo y học: "980 nm diode lasers in oral and facial practice: current state of the science and art"
... theo- retical parameters,which are: • wavelength for selective absorption by chro- mophores: melanin (33 5-5 32 nm)[8], hemoglo- binin(50 0-5 80nm;) [9,10], oxy-hemoglobin (580 nm;) [9,10], deoxy-hemoglobin(760nm;)[9,10] ... patients. Par- ticularly, the use of a diode laser seems to be promis- ing, in patients, who need to be treated with a tech- nique where the operative and post-op...
Ngày tải lên: 26/10/2012, 09:48
Psychic, Science and Jesus
... you desire below PSYCHIC ,SCIENCE AND JESUS Copyright ATSU DAVOH No part of this book can be produced illegally. PSYCHIC, SCIENCE AND JESUS. PREFACE A SEMI-FICTION STORY BY ATSU DAVOH. MONA ... SECRET SCIENTIST. SECRET BECAUSE HE WAS THE HEAD OF THE CHAPEL’S ANTI -SCIENCE GROUP.HE AND HIS MOTHER,MONA USED SCIENCE AND PSYCHIC TO SOLVE PEOPLE’S PROBLEMS. PEOPLE DID N...
Ngày tải lên: 07/11/2012, 09:09
Chocolate science and technology
... bodies and has authored and co-authored 112 publications (including 52 peer-reviewed journal publications, 4 books and 56 conference presentations with published abstracts) in food science and technology. ... has sev- eral research and review publications on chocolate science and technology in peer-reviewed journals and has presented several papers on chocolate technology at...
Ngày tải lên: 07/07/2013, 18:22
Potential biogas production from sewage sludge: A case study of the sewage treatment plant at Kwame Nkrumah university of science and technology, Ghana
... contains 6 5-6 6% CH 4 , 3 2-3 4% CO 2 by volume and the rest is H 2 S and other gases in traces whiles the biogas composition for a municipal solid waste is composed of 6 8-7 2% CH 4 , 1 8-2 0% CO 2 , and ... improper handing pose as a potential health risk. A three- International Journal of Energy and Environment (IJEE), Volume 1, Issue 6, 2010, pp.100 9-1 016 ISSN 20...
Ngày tải lên: 05/09/2013, 16:11