Search for tag: "quantum field theory"

01:11:49 From Einstein's Photoelectric Effect to Band… From Einstein's Photoelectric Effect to Band Mapping. (Shen)	From Einstein's Photoelectric Effect to Band Mapping. (Shen) 2019 Summer School optical spectroscopy energy electronic structure concepts in physics fermi energy kilo volt modern physics class simple system translational symmetry electrons inside electronic structure angle result photo continuum mechanics measure things perpendicular component high energy m.b.e.high energy resolution teaching photo electron nuclear physics good sample electrons coming electron coming magnetic field photo motion electron photo mission experiment radiobiology main factors electronics companies of the united kingdom color coded charge carriers probing depth elementary geometry photo mission material properties binding energy result photo mission energy electrons energy single spectrum measurement surface sensitive crystallography ray diffraction social sciences free carriers lead tennis ball high intensity basically map basic principle plane wave threshold energy reciprocal lot electronics pretty popular energy resolution material systems mission experiment momentum conservation free electron gas anthropology physical properties magnetism formally correct optical transition band structure plain wave deep inside huge number core levels geometry photon energy defined energy low energy channel plate key thing total momentum conservation laws quantum mechanical dipole matrix element universal curve symmetry simple relationship step model polar angle photo current main thing decision theory energy band photo mission process transition matrix element energy conservation band masses free electron large energy accelerator physics 100 electron volts potential barrier sudden approximation photo mission measurement work function radiation shield photo electrons coming classical mechanics momentum space physical quantities balls condensed matter physics photo machine discharge lamp single atom low energy electronic couple slides valence band spectroscopy higher harmonic generation plane momentum photo lecture mechanics actual process famous year nanometer probing mission process electron volts quantum mechanics class caption complete free space featureless background sample manipulator crystal wright fermi–dirac statistics thermodynamics higher energy kinetic energy highest energy vacuum chamber electronic band structures electron analyzer play momentum velocity quantum chemistry correct answer quantum materials electron momentum electromagnetism fermi level urban studies and planning electron leaving educational psychology energy range si derived units low temperature mass quantum mechanics nobel prize material science From James Overhiser on August 7th, 2019 25 plays
01:00:26 From Particles to Quasiparticles - Understanding… From Particles to Quasiparticles - Understanding and Measuring Interactions by ARPES. (Shen)	From Particles to Quasiparticles - Understanding and Measuring Interactions by ARPES. (Shen) 2019 Cornell Summer School optical spectroscopy interacting band structure single electron scattering energy momentum conversion factor overlap integral systems theory systems m.b.e.special functions field theory photo electron nuclear physics energy distribution curve photo motion electron photo mission experiment complex function electronics iraq function spectral function energy scales photo mission elementary special functions binding energy fairly weak specific measurements philosophical terminology delta function electric and magnetic fields in matter incoherent background particle physics single particle spectral slowly varying distribution curve extreme version large data critical aspect matrix element energy resolution varying function free electron gas magnetism local object photo mission process legal documents free electron total energy resolution common law popular answer interacting system low energy key thing cutoff frequency collective mode specific heat vibrational mode systems science color communication bioinformatics measure interactions educational assessment and evaluation cybernetics transcription factors quantum mechanics main thing electron phone band structure types of functions gamma factor imaginary parts electronics terminology long story basically analyze energy dependent broadening lab session blah blah blah band dispersion didactics electron photon electron electron interaction direct gap momentum space physical quantities condensed matter physics density functional theory electron bows photo mission intensity spectroscopy energy window step function clear signature plasma physics energy (physics)ultra high vacuum mission process spin wave strong coupling caption complete directly calculate plasma frequency d.s.t.d.f.t.high energy fermi–dirac statistics electron volts resolution function sharp kink electronic band structures generalized functions liquid theory total waste liquid interactions mission experiment fermi level educational psychology legal terms 1000000 electron volts writing broad peak evaluation methods electron vibrational interactions wave function From James Overhiser on August 7th, 2019 11 plays
01:13:02 Chemical Design of Materials Discovery… Chemical Design of Materials Discovery (McQueen)(1 of 3)	Chemical Design of Materials Discovery (McQueen)(1 of 3) 2019 JHU Summer School population pretty good idea people concepts in physics prediction terribly interesting tools caption complete heat transfer temperature quantum electrodynamics interesting thing question systems theory charge printing systems spintronics ventilating scientific method pretty good science experiments cryptography superconductivity structure material human geography chemical tools chemistry electron huge number substitution manufacturing superconductor knowledge field theory interaction semantics characteristic futurology heating thought thing good reason room temperature and air conditioning demography light problem property From James Overhiser on July 15th, 2019 15 plays
01:01:34 Linear Imaging Theory Linear Imaging Theory	Linear Imaging Theory 2017 PARADIM Linear Imaging Theory Robert Hovden d.n.a.dark field aperture size object function total intensity collaboration increases concepts in physics convergence angle area spherical aberration wide range covering today geometric shapes d.n.a. structure central minimum electron microscopy focal point intensity increases linear imaging model wave vectors control theory optical devices collection angle larger aperture electron microscope high angle architectural elements signal processing photography high pass filter transfer function uncorrected system phase shift darkfield regime functional form scattered electrons higher frequency bright field stem egyptian artefact types diffraction pattern science of photography point spread function high intensity probe elementary geometry integrals spatial frequency optics objective lens bright field regime bright spots real space low frequency reciprocal space blurring contribution sphere collaboration uncorrected instrument characteristic dimension incoherent imaging condition surfaces aperture function wave front atomic physics imaging mode contract transfer function white noise scanning transmission electron cohere imaging previous lecture distant plane elementary shapes stem higher angles high resolution incoherent linear image mil rating detector geometries field cone geometry types of functions aberration corrected constant phase length lower frequencies chromatic aberration conic sections amplitude squared aberration free scientific techniques microscopes measuring instruments intensity squared optic axis intensity decreases contrast transfer diffraction limit stem image individual atom radio spectrum incoherent imaging quantum mechanics aberration free probe multivariable calculus people meters focal plane bright field low angle amateur radio systems theory image plane coherent imaging condition collecting electrons blurring function transmission electron microscopy physical quantities digital photography angular spread double integral coherent imaging largest range face shift higher order aberrations raleigh criterion pio fairly interpretable transmission electron microscope square pulse geometrical optics digital signal processing 1st order caption complete probe tails nyquist limit blue curve subroutines broadcasting filter frequency response maximum frequency high frequency caustic curve hand side low pass filter spatial coordinates atoms closer coherent image sparrow criterion structural system pico meter dark background frequency space optimal aperture t.m.complex conjugate contrast transfer function wave function measure ultimately imaging condition annular darkfield incoherent imaging mode atomic number field stem atomic column inelastic interactions nobel prize angle medium chemistry focal imaging probe size From James Overhiser on February 15th, 2019 17 plays
$Thumbnail for entry Diffraction (Part 2)$ 01:07:41 Diffraction (Part 2) Diffraction (Part 2)	Diffraction (Part 2) 2017 PARADIM Diffraction part 2 David Muller central beam noise source aperture size n.c.concepts in physics ideal d.q.2nd thing readout noise high dynamic range mental plane thermal noise long time channel gain variations quantum electrodynamics digital imaging count rate optical devices fraction pattern pico amps long range biological imaging range electric fields huge amount signal processing geology d.p.photography thin pixel magnetic field hole pez c.c.d. camera electronics poisson distribution diffraction pattern electron hope point spread function 200 kilovolts $16.00 pico amps neighboring pixel square root mass signal standard deviation detective quantum efficiency spatial frequency optics real space research methods energy distribution magnetic ripples d.q.single electron sensitivity particle physics narrow pixel space measurement slowly varying abled sphere atomic physics imaging mode electric field energy deposited minus sigma pretty good emerging technologies electron beam noise dynamic range point $16.00 pico magnetism dock noise soft moon k.v.pulse counting detector lastic imaging modes e.q.low energy pretty darn good electrons arrive micron pixel fire electron random noise microscopes perfectly linear discrete distributions electron produces mass image percent variation technical details electron hole pay q.e.statistics electrostatics electronics terminology quantum mechanics field image single actor ideal detector multiple pixels grain contrast systems theory electron hole 1st time high count rates charge carriers huge number diffraction spot physical quantities digital photography full diffraction pattern noise time pulse counting beam energy high voltages output noise milli 2nd dynamical systems output signal low count rate dimensional data digital signal processing momentum transfer caption complete $150.00 micron information pixel array detector c.c.d.1000 electrons laboratory equipment cybernetics atomic resolution scientific method finite size fundamental limit noise ratio fraction spot quantum chemistry t.m.data evaluation methods electromagnetism momentum operator incident electron diffraction probability current flow rough rule beam current wave function diffraction work From James Overhiser on February 15th, 2019 15 plays
$Thumbnail for entry Diffraction (Part 1)$ 01:18:03 Diffraction (Part 1) Diffraction (Part 1)	Diffraction (Part 1) 2017 PARADIM Diffraction part 1 David Muller d.n.a.solid pole concepts in physics outgoing spherical wave positive nuclei ray diffraction experiment atomic physics diffracted beam nicely lined higher order silicon atom electron microscopy focal point image intensity zone axis symmetry zone axes optical devices fia fraction pattern teaching shape factor electron microscope audio engineering high angle nuclear physics fit scattering beautiful thing good approximation thin sample imaging method chip chip chip reciprocal lattice phase shift elastic scattering digital audio english indie rock groups diffraction pattern diffraction space geometric optics chemical elements big angles spatial resolution small angle scattering elementary special functions badly tilted spatial frequency adam layer real space lattice spacing delta function small angle measurement crystallography particle physics musical quintets time frequencies quantum chemistry scattering happened 1st column scattering oral communication plane wave atom column biology and pharmacology of chemical elements titanium column multi slice transmission function electron beam finite object surface normal big spacing periodic crystal soft moon forward direction synchrotron-related techniques wave number constant phase infinite series change shape travel parallel infinitely large crystal scientific techniques main thing sol microscopes mathematical physics contrast imaging optic axis shape fact transition metals initial wave forward scattering stem image reciprocal space spherical wave electronics terminology quantum mechanics field image neighboring column 1st approximation reducing agents fourier analysis analytic geometry furcal wave focal plane time varying bright field angle scattering order spot multi slice simulation image plane didactics scattering event physical aperture diffraction spot momentum space physical quantities phoria transform times worse 2nd ring single atom objective aperture dietary minerals absorption and radiative transfer (optics)trigonometry strong phase approximation unit cell field imaging carbon nitrogen stem mode metals diffraction peak inverse angstroms english alternative rock groups dog field geometrical optics parallel beam 1st order momentum transfer atomic resolution image year transform crystallography definition periodic table fiber optic waveguide pyrotechnic fuels central spot semiconductor materials mathematical notation caption complete finite size lattice image d.c.large angle fall field sine wave fraction spot functional analysis random orientation t.m.bad news initial wave function educational psychology acoustics information theory diffraction atomic number long rod wave function From James Overhiser on February 15th, 2019 30 plays
44:37 Limitations of DFT and post-DFT methods- Lecture… Limitations of DFT and post-DFT methods- Lecture 5.2	Limitations of DFT and post-DFT methods- Lecture 5.2 2016 PARADIM SUMMER SCHOOL Feliciano Giustino - Lecture 5.2 musician energies communication energy philosophical terminology concepts in physics teach point exchange energy main problem mathematical terminology systems theory focus change particle physics musical quintets human communication local function technique oral communication quantum mechanics martial art techniques systems japanese-language singers caption complete atomic physics function optical properties nuclear physics 1st principles modern implementation energy (physics)f.t.condensed matter 1st time english-language journals electron chemical bonding quantum field theory g.w.quantum chemistry semantics physical quantities p.b.grammar change contribution hybrid functions thought thing south korean boy bands short range wave function proton proton basically From James Overhiser on February 15th, 2019 34 plays
14:38 2016 REU Cameron Ruhl CNF & PARADIM REU… 2016 REU Cameron Ruhl CNF & PARADIM REU Convocation	2016 REU Cameron Ruhl CNF & PARADIM REU Convocation renting interesting properties high temperature interesting applications concepts in physics side walls chemical elements questions filename extensions 2nd design electron microscopy generation devices exposure time electricity interesting systems theory metallurgy permanent pyrotechnic fuels magnetic materials science super lot grain structures dimensional material magnetic field oxides electron nanomaterials fact data 1st thing matrix theory scattered electrons precursor flow $4.00 system large scale hexagon system charge carriers microscopy group microscopy atomic lot banking scale image fourfold symmetry titanium platinum determine 1st presenter 210 kelvin selenium atoms design measurement crystallography ray diffraction particle physics human communication $210.00 kelvin chemical properties reu current experiment vast majority scanning transmission electron charge carrier emerging technologies model layer environmental science oxidation agreement magnetism complicated ratios grain boundaries lattice orientation properties graphic orientation lined dots electrical transport superhard materials thing misaligned dots magnetostatics alpha psi symmetry mineralogy semiconductors magnetic property photographic processes microscopes future work thin film hard drive anions hexagonal lattice resolution image transition metals hall fact arts rural community development temperature color composite image growth process white circle system quantum mechanics charge care business law inorganic silicon compounds transition metal molecular quantum dot accountancy professor david $45.00 degrees previous film grain orientation transmission electron microscopy physical quantities silicon nitride condensed matter physics circle represents confounding variables mechanics highly misaligned call fact crystal structure atomic lattice false color composite silicon wafer nano wire metals dislocation behavior electromagnetism nitrides caption complete electronic properties quantum electronics darkfield transmission electron dimensional system chrome gold flower design potential atomic resolution parameter super lattice single material algebra local super lattice mismatch scandium green boundaries cnf mediasite aspect ratio structure architectural design aesthetics diffraction $210.00 calvin carbides voltage drop materials photo resist From James Overhiser on February 13th, 2019 14 plays
13:10 2016 REU Betty Hu CNF & PARADIM REU… 2016 REU Betty Hu CNF & PARADIM REU Convocation	2016 REU Betty Hu CNF & PARADIM REU Convocation renting interesting properties chemical properties high temperature interesting applications concepts in physics side walls chemical elements superhard materials 2nd design electron microscopy fold symmetry generation devices exposure time electricity metallurgy thermodynamics reducing agents pyrotechnic fuels nice square lot materials science hall bars super lot grain structures dimensional material magnetic field electron nanomaterials fact data 1st thing scattered electrons precursor flow $4.00 system large scale oriented dot orientation disorder charge carriers microscopy group microscopy atomic lot elementary geometry scale image electronic devices fourfold symmetry titanium platinum 1st presenter 210 kelvin selenium atoms design measurement dry edge crystallography ray diffraction particle physics banking $210.00 kelvin w.c.reu cnf c.n.n.vast majority scanning transmission electron charge carrier coefficient emerging technologies model layer magnetism ratios grain boundaries lattice orientation topology american rock music groups electrical transport measurements geometry graphic orientation transition lined dots electrical transport misaligned dots alpha psi mineralogy semiconductors magnetic property microscopes future work thin film hard drive hexagonal lattice resolution image transition metals hall fact arts rural community development temperature color composite image growth process white circle nitrides photographic processes quantum mechanics charge care business law inorganic silicon compounds transition metal electromagnetism quantum dot accountancy direction professor david $45.00 degrees previous film t.c.m.grain orientation transmission electron microscopy physical quantities silicon nitride condensed matter physics circle represents density functional theory confounding variables magnetostatics highly misaligned call fact crystal structure atomic lattice false color composite silicon wafer nano wire good agreement metals p.c.b.sample dislocation behavior mathematical terminology caption complete graphics file formats electronic properties baseline measurement economics terminology darkfield transmission electron dimensional system hexagon system chrome gold flower design quantum electronics atomic resolution super lattice single material algebra kelvin state functions local super lattice mismatch green boundaries silicon nitrate mediasite fabrication structure architectural design aesthetics aspect ratio $210.00 calvin voltage drop contact photo resist From James Overhiser on February 12th, 2019 22 plays
55:09 Lee2 Lee2	Lee2 summer natural sciences magnetic observational astronomy chemical elements solutions geometric shapes scattering thermodynamic entropy knowledge continuum mechanics systems theory metallurgy thermodynamics optical devices systems factor transformation physical chemistry nuclear physics pharmacology linear filters concepts in physics differential topology rotation hamiltonian rays scattering neutron related techniques magnet elementary geometry phases of matter magnetic ordering sociology of culture optics force atsic statistical mechanics energy philosophical terminology spin models crystallography particle physics surfaces hexagonal minerals quantum chemistry impurity dietary minerals atomic physics research experiment biology and pharmacology of chemical elements electronics statistical terminology elementary shapes magnetism imaging carbon drug delivery devices topology building materials chemical processes interaction natural resources geometry low energy transfer dimensionless numbers probability theory house types ray techniques considerations symmetry color communication community and uncertainty colloidal chemistry transition metals x-ray instrumentation temperature natural philosophy native element minerals quantum mechanics information science structure pi analytic geometry direction molecular biology volume glass heat transfer biomolecules classical mechanics condensed matter physics meteorology crystal solvents spectroscopy absorption and radiative transfer (optics)hippie movement mechanics aesthetics analytical chemistry metals theoretical physics surveying large intensity education caption complete information nearest neighbor energy transfer web colors darkness scientific method neutron quantum field theory anatomy types of organization liquids velocity covariance and correlation electromagnetism light crystals materials mass correlation electrical conductors resolution chemical engineering From Rebecca Vliet on September 12th, 2018 14 plays
01:09:34 Kotliar2.mp4 Kotliar2.mp4	Kotliar2.mp4 chemistry state functions probability people calculation statistical mechanics energy philosophical terminology superconductors spanish language cybernetics oral communication algorithms scattering particle physics caption complete steam power p.c.ontology quantum chemistry interesting algebra creativity system atomic physics quantum mechanics thermodynamics d.f.t.potential interrogative words and phrases p.f.d.order theory unsolved problems in physics teaching topology parameter method physical chemistry phase transitions materials science nuclear physics statistical terminology experiment superconductivity concepts in physics material quantum field theory differential topology experimentalist electron metals compound g.w.functions and mappings classical mechanics structure historiography physical quantities piece condensed matter physics educational psychology cognition physical cosmology magnetism tokamaks thought thing phases of matter materials mass theory correlation i.c.u.quantum mechanical personality embedded systems spintronics theoretical computer science From Rebecca Vliet on September 12th, 2018 6 plays
01:04:59 Tchernyshyov2.mp4 Tchernyshyov2.mp4	Tchernyshyov2.mp4 rotational symmetry square force point electrodynamics philosophical logic concepts in physics symbols variable forms of energy meaning (philosophy of language)ice theoretical physics mathematical terminology theories of history technology particle physics electric differential calculus p.c.heat transfer quantum chemistry temperature electrostatics electricity marxist theory philosophy of physics chemical properties oral communication quantum mechanics thermodynamics charge iso basic latin letters free software programmed in c spintronics ventilating caption complete transformation function field direction theory energy means component statistical terminology state functions estimation theory quantum field theory elementary shapes c..magnetism multiplication singularity configuration logic semantics electromagnetism description physical quantities evolution educational psychology circulation constraint linear algebra futurology space heating elementary mathematics and air conditioning amplitude conservation laws electrical engineering distribution definition physics From Rebecca Vliet on September 12th, 2018 7 plays
53:41 Kotliar1.mp4 Kotliar1.mp4	Kotliar1.mp4 concepts in physics evolutionary biology scattering idealism semiconductor heat transfer interesting continuum mechanics thermodynamics electromagnetic radiation teaching physical chemistry architectural elements materials science nuclear physics good approximation computing terminology material oxides electron g.w.evolution grammar set theory phases of matter truth meaning (philosophy of language)optics mechanical vibrations numerical analysis statistical mechanics energy principles approximation measurement dynamics hardware (mechanical)particle physics proof theory political philosophy atomic physics research starting point scientific terminology spintronics metalogic theory g.p.l.low temperatures magnetism natural philosophy industry computers science experiments logic statements branches of philosophy electronic structure methods color communication philosophical logic mathematical logic problem solving telecommunications si base units temperature abstract algebra light sources creativity system quantum mechanics start kinematics reproduction in animals molecules real material understand physical sciences thing semantics condensed matter physics applied and interdisciplinary physics theories matter spectroscopy absorption and radiative transfer (optics)piece mechanics resistivity electronics terminology calculation analytical chemistry metals education caption complete design of experiments metrology business terms space telescopes materials scientific method abstraction philosophy structural system quantum field theory physical objects political science covariance and correlation educational psychology reference system f.p.u.broadcasting computer programming principle correlation evaluation methods chemistry embedded systems From Rebecca Vliet on September 12th, 2018 7 plays
56:01 Tchernyshyov1.mp4 Tchernyshyov1.mp4	Tchernyshyov1.mp4 phase transitions magnetization statements point communication energy philosophical terminology superconductors spin models metals approximation chemical elements experiments operator force evolutionary biology thing light caption complete logic information heat transfer ontology quantum chemistry temperature abstract algebra thermodynamics interesting interaction creativity system quantum mechanics business start information science scientific terminology sociological terminology physical sciences cognitive science physical objects product function model nuclear physics heisenberg superposition pharmacology concepts in physics spintronics mathematical objects expectation quantum field theory magnetism construction understand elementary geometry philosophical concepts ancient peoples classical mechanics semantics electromagnetism evolution scientific method grammar condensed matter physics particle linear algebra single theories matter phases of matter magnetic ordering universe direction natural philosophy evaluation methods property chemical bonding spins film and video terminology From Rebecca Vliet on September 12th, 2018 14 plays
57:56 CAM Colloquium: Guillaume Bal (Columbia) - Hybrid… CAM Colloquium: Guillaume Bal (Columbia) - Hybrid Inverse Problems in Medical Imaging	CAM Colloquium: Guillaume Bal (Columbia) - Hybrid Inverse Problems in Medical Imaging Friday, January 31, 2014 at 3:30pm Frank H. T. Rhodes Hall, 655 CAM Colloquium: Guillaume Bal (Columbia) - Hybrid Inverse Problems in Medical Imaging Several recent coupled-physics medical imaging… vision broadcasting m.r.i.group theory radio spectrum diffusion eng creativity papermaking high contrast imagination natural philosophy interaction classical mechanics mechanical vibrations color ultrasound applied and interdisciplinary physics acoustics linear operators in calculus physical sciences semantics natural sciences materials reconstruction electronics cognitive science condition forestry solution equations of physics statistical terminology question nuclear magnetic resonance purely optical light graphic design banking electromagnetism mechanics communication displacement meteorology spring 2014 mass photography differential calculus logical consequence concepts in physics particle physics quantum electrodynamics religion tissue partial differential equations photometry mental structures resolution latin alphabet vector calculus computer programming statistical theory greek alphabet mediasite interest organs syntactic entities functions and mappings mathematical objects differential topology electromagnetic radiation genetics contrast matter medical terminology computing terminology aesthetics anatomy reasoning vector field engineering logic basic financial concepts function reconstruct universe problem scattering measurement linear algebra on premise optics photon nuclear physics physical objects p.d.noise grammar mathematical analysis physical chemistry theory of relativity force hearing idealism kinematics high resolution philosophical terminology set theory business law information theory computer graphics direction low contrast image processing symbols continuum mechanics scientific method equation caption complete infinity r.p.g. From E. Cornelius on May 11th, 2018 1 plays
53:43 CAM Colloquium, 2014-04-18 - Christopher K.… CAM Colloquium, 2014-04-18 - Christopher K. Wikle: An Overview of Mechanistically-Motivated Spatio-Temporal dynamic Models in Statistics	CAM Colloquium, 2014-04-18 - Christopher K. Wikle: An Overview of Mechanistically-Motivated Spatio-Temporal dynamic Models in Statistics weather dynamic probability distributions evaluation property decision theory cam cultural geography parameterization property law physiology ecosystems cornell aesthetics meteorology information population ecology philosophy of law bodies of water demography system economic anthropology cultural history quality flight phases numerical differential equations creativity accountancy culture computer programming options personal life pharmacology animals in religion measurement educational psychology parameter continuum mechanics thing functional analysis engineering anatomy symmetry reasoning statistical terminology parameterize cybernetics sociological terminology systems science elementary geometry abstraction popular culture data scientific method personhood derivatives (finance)space operator quantum field theory futurology communication space time christian theology information science science caption complete business law evaluation methods environmental science topology oceanography evolution theories of history statistical theory forms of government cognitive science writing social concepts concepts in physics algebra scientific modeling probability theory observation population pedagogy psychology process deterministic transformation uncertainty cartography larger scales biology formal sciences elementary algebra specification biology terminology physical chemistry prophecy matter biological systems philosophical terminology learning transport phenomena final point aquatic ecology coastal and oceanic landforms business behavior theory of probability distributions non-linear quantum mechanics summary statistics length complicated physical objects light chaos theory applied mathematics covariance and correlation statistical models temperature political philosophy time series analysis scale diffusion emotion dynamical systems distribution interaction systems theory sociocultural evolution human behavior developmental psychology interpolation model marketing statistics evolutionary biology motivation From E. Cornelius on June 29th, 2017 7 plays