Search for tag: "frequency"

67 Media

Week6_ImageCompression_Noise_Filtering duration 54 minutes 42 seconds Week6_ImageCompression_Noise_Filtering Week6_ImageCompression_Noise_Filtering	Week6_ImageCompression_Noise_Filtering This lecture is part of MedPhys 4D03 lecture series for the Fall 2020 semester. In this lecture the most widely used image compression, JPEG is presented and a description of the noise in digital… medical physics medical imaging image frequency compression frequencies filter signal values dct bit images intensity matrix fourier filtering space function domain pixel deviation ratio From Janos Juhasz 17 plays 0
Week4-Imaging In Practice duration 1 hour 23 minutes Week4-Imaging In Practice Week4-Imaging In Practice	Week4-Imaging In Practice This lecture is part of MedPhys 4D03 lecture series for the Fall 2020 semester. In this lecture some of the most important operations in intensity space, such as window/level, histograms etc. will… medical physics medical imaging image function resolution frequency pixels intensity size point pixel times window light bit images object sample microscope level microscopy format From Janos Juhasz 31 plays 0
Week3_Digital_Images duration 50 minutes 48 seconds Week3_Digital_Images Week3_Digital_Images	Week3_Digital_Images This lecture is part of MedPhys 4D03 lecture series for the Fall 2020 semester. In this lecture sampling theory is presented, including aliasing, Nyquist rate. Also, quantization of images are… image function sampling frequency fourier space images points delta rate bit times object nyquist bits islands transform frequencies signal quantisation From Janos Juhasz 26 plays 0
Week2-Operations with functions 1 duration 1 hour 42 minutes Week2-Operations with functions 1 Week2-Operations with functions 1	Week2-Operations with functions 1 This lecture is part of MedPhys 4D03 lecture series for the Fall 2020 semester and it provides an introduces the use of convolution and Fourier Transforms pertaining to 1-D and 2-D functions used in… medical physics medical imaging function fourier convolution minus transform functions frequency alpha signal domain times notation delta sine sort cosine image result multiplication naught From Janos Juhasz 41 plays 0
Week12_Image_reconstrunction_MRI duration 1 hour 6 minutes Week12_Image_reconstrunction_MRI Week12_Image_reconstrunction_MRI	Week12_Image_reconstrunction_MRI This lecture is part of MedPhys 4D03 lecture series for the Fall 2020 semester. It introduces the mathematics of image reconstruction in Magnetic Resonance Imaging. medical physics medical imaging mri gradient direction frequency field signal slice image phase protons space magnetization pulse echo delta frequencies degree vector sequence strength From Janos Juhasz 15 plays 0
Week11_MRI_Physics duration 1 hour 24 minutes Week11_MRI_Physics Week11_MRI_Physics	Week11_MRI_Physics This lecture is part of MedPhys 4D03 lecture series for the Fall 2020 semester. The Physics of MRI and MRI design criteria is discussed. medical physics medical imaging mri physics field magnetization protons frequency signal coils rf naught angle magnet gradient vector times energy relaxation coil direction axis pause From Janos Juhasz 13 plays 0
Video Lecture_Lab D14-Digital Controls Systems… duration 9 minutes 20 seconds Video Lecture_Lab D14-Digital Controls Systems… Video Lecture_Lab D14-Digital Controls Systems Part 2	Video Lecture_Lab D14-Digital Controls Systems Part 2 output frequency control domain loop speed controller response systems input amplitude error lab analysis 1960s fact phase magnitude plant overshoot From JOHN COLENBRANDER 7 plays 0
Ultrasound duration 1 hour 51 minutes Ultrasound Ultrasound	Ultrasound ultrasound kind resolution wave sound transducer frequency tissue waves bit speed intensity radiation image bone imaging reflections lot surface impedance From Troy Farncombe 115 plays 0
Scanned Notes with Voiceover duration 30 seconds Scanned Notes with Voiceover Scanned Notes with Voiceover	Scanned Notes with Voiceover domain omega phasor field frequency quantity method quantities sinusoidal fact answer groups approaches hft exponents t. tv From Roshan Bashar 4 plays 0
PNB-3EV3-Lab1 duration 1 hour 53 minutes PNB-3EV3-Lab1 PNB-3EV3-Lab1	PNB-3EV3-Lab1 sound frequency things rate thing microphone stuff sampling amplitude computer voice axis bit cell lot python recording lab array google From David Feinberg 25 plays 0
PHYSICS739_approximation_Methods3 duration 1 hour 9 minutes PHYSICS739_approximation_Methods3 PHYSICS739_approximation_Methods3	PHYSICS739_approximation_Methods3 Showed how to find transition amplitudes from the Dyson series. Began analyzing 1st order perturbations constant in time except for being switched on at t=t0. picture interaction schrodinger function delta perturbation energy operator probability times evolution continuum frequency omega equation transition series thing hamiltonian matrix From DUNCAN O'DELL 2 plays 0
PHYS-4F03-class26 duration 52 minutes 38 seconds PHYS-4F03-class26 PHYS-4F03-class26	PHYS-4F03-class26 Finished the slides on the adiabatic approximation (L18Adiabatic) omega term equation psi energy phase frequency hamiltonian field expression times change spin thing eigenstate eigenstates n. schrodinger difference derivative From DUNCAN O'DELL 6 plays 0
PHYS-4F03-class24 duration 49 minutes 31 seconds PHYS-4F03-class24 PHYS-4F03-class24	PHYS-4F03-class24 Used first order time-dependent perturbation to study the interaction between atoms and incoherent light (L17T_dep_PT_part3) energy field frequency density atom atoms rate formula light emission transition frequencies perturbation omega directions decay radiation theory sort photon From DUNCAN O'DELL 4 plays 0
PHYS-4F03-class23 duration 53 minutes 53 seconds PHYS-4F03-class23 PHYS-4F03-class23	PHYS-4F03-class23 Finished going through the slides L17T_dep_PT_part2 which included perturbations with harmonic time dependence, including the illumination of an atom by a laser. Started the next set of slides… field atom energy perturbation frequency omega light wave dipole times theory matrix direction form charge fact transition frequencies function probability From DUNCAN O'DELL 5 plays 0
PHYS-4F03-class22 duration 54 minutes 46 seconds PHYS-4F03-class22 PHYS-4F03-class22	PHYS-4F03-class22 Started the set of slides L17T_dep_PT_part2 which applies time dependent perturbation theory to various examples. omega function energy delta sort probability frequency thing perturbation expression modulus difference times fourier gaussian sine width pi term infinity From DUNCAN O'DELL 4 plays 0
Neuromodulation in Epilepsy, Dr. Cristina Go,… duration 50 minutes 37 seconds Neuromodulation in Epilepsy, Dr. Cristina Go,… Neuromodulation in Epilepsy, Dr. Cristina Go, September 10 2021	Neuromodulation in Epilepsy, Dr. Cristina Go, September 10 2021 patients seizure stimulation dbs vns patient seizures epilepsy dns devices frequency device mri bit effect thalamus nucleus eeg lot side From Robyn Whitney 65 plays 0
MRI Physics - Part 1 duration 2 hours 55 minutes MRI Physics - Part 1 MRI Physics - Part 1	MRI Physics - Part 1 An introduction to the physics of magnetic resonance imaging. mri magnetic resonance imaging medical imaging signal pulse frequency gradient field rf phase direction energy space echo spin guys coil image bit hydrogen spins atoms magnetization From Aravinthan Jegatheesan 105 plays 0
MRI Artifacts duration 1 hour 34 minutes MRI Artifacts MRI Artifacts	MRI Artifacts space image artifact artifacts frequency echo field phase direction images things gradient motion sequence kind signal sequences pulse mri imaging From Troy Farncombe 44 plays 0
Mathematics essentials duration 50 minutes 51 seconds Mathematics essentials Mathematics essentials	Mathematics essentials This is the second part of the Monday lecture. Review of basic mathematics and trigonometry. radiology math review frequency image function space fourier intensity object power levels domain attenuation question times source resolution imaging pairs transform layer root From Janos Juhasz 58 plays 0
Lecture 4 - Imaging Concepts duration 48 minutes 3 seconds Lecture 4 - Imaging Concepts Lecture 4 - Imaging Concepts	Lecture 4 - Imaging Concepts image imaging contrast object resolution answer quality function width deviation signal error frequency photons curve ray point ratio window level From Troy Farncombe 18 plays 0
Lecture 3 - Imaging Concepts duration 48 minutes 3 seconds Lecture 3 - Imaging Concepts Lecture 3 - Imaging Concepts	Lecture 3 - Imaging Concepts image imaging contrast object resolution answer quality function width deviation signal error frequency photons curve ray point ratio window level From Troy Farncombe 66 plays 0
Lab MA: Pre-Lab Video duration 9 minutes 44 seconds Lab MA: Pre-Lab Video Lab MA: Pre-Lab Video	Lab MA: Pre-Lab Video pre-lab video lab test compliance structure braces weight cross signal frequency plate hammer impact gauge presentation loads behavior deflection manual analysis position From JOHN COLENBRANDER 462 plays
Lab D7: Pre-Lab Presentation duration 12 minutes 57 seconds Lab D7: Pre-Lab Presentation Lab D7: Pre-Lab Presentation	Lab D7: Pre-Lab Presentation mechenglabs pre-lab video lab frequency manual motor displacement mass beam peak button spring start dashpot vibration switch model presentation ratio expression experiment equipment From JOHN COLENBRANDER 529 plays 0
Lab 3 -Formant Frequencies duration 46 minutes 9 seconds Lab 3 -Formant Frequencies Lab 3 -Formant Frequencies	Lab 3 -Formant Frequencies plot frequency sound axis things frequencies column form thing color vowel voice stuff python ellipse vowels lpc voices lecture colors From David Feinberg 22 plays 0