2016-09-23
Steve Sims: Human Motivation, Gamification and Secrets to Creating Successful Behavioral Programs
source: Stanford 2016年8月2日
From the Interactive Media & games Seminar Series; Steve Sims, mediaX Distinguished Visiting Scholar from Badgeville, looks at how when it comes to customer engagement, employee collaboration, productivity and happiness, many companies operate reactively instead of proactively. Management tires of losing top talent or revenue. They seem shocked when their users aren't engaged, progressing or learning, yet they do little to actively prevent it. Customers want to be engaged in the experience and employees want to know their career matters on a personal, company and societal level.
Roberto Mangabeira Unger: The Singular Universe & Reality of Time (Roberto Unger Interview)
source: Philosophical Overdose 2016年8月22日
In this interview, Roberto Mangabeira Unger discusses his 2015 book that he wrote with the physicist Lee Smolin called "The Singular Universe and the Reality of Time"...
Should we rethink the notion that space and time are governed by unwavering laws of nature? Are they better understood as habits, themselves subject to change and evolution? Roberto Unger speaks to Ian Sample about his proposal that time applies to everything, with all the far-reaching implications that has for the universe. In addition, his book is an attack on prevailing theories about the universe and its history, arguing that cosmology should shift its focus from untestable speculations, and back towards the disciplines of science.
Roberto Unger is a Brazilian philosopher and politician. He's also a badass. He has written on many topics, especially political philosophy and the human condition.
If you're interested in any of these scientific and philosophical issues, I recommend checking out his book, it's pretty interesting. It can be found online here: http://www.robertounger.com/english/p...
This is from part of a Guardian Science Weekly podcast. For more information, go tohttps://www.theguardian.com/science/s...
Trupti Mishra: Managerial Economics (IIT Bombay)
# playlist of the 40 videos (click the up-left corner of the video)
source: nptelhrd 2014年10月9日
Management - Managerial Economics by Dr. Trupti Mishra, Department of Management, IIT Bombay. For more details on NPTEL visit http://nptel.ac.in
01 Introduction to Managerial Economics 45:23
02 Introduction to Managerial Economics [Contd…] 53:31
03 Introduction to Managerial Economics [Contd…] 55:17
04 Basic Tools of Economic Analysis and Optimization Techniques-1 53:56
05 Basic Tools of Economic Analysis and Optimization Techniques-2 56:48
06 Basic Tools of Economic Analysis and Optimization Techniques-3 52:36
07 Basic Tools of Economic Analysis and Optimization Techniques-4 39:53
08 Theory of Demand 54:05
09 Theory of Demand [Contd…] 54:24
10 Theory of Demand [Contd…] 56:48
11 Theory of Demand [Contd…] 48:14
12 Consumer Behaviour 58:43
13 Consumer Behaviour [Contd…] 52:05
14 Elasticity of Supply 1:00:58
15 Demand Forecasting 46:27
16 Demand Forecasting [Contd…] 52:44
17 Theory of Production 54:46
18 Theory of Production [Contd…] 54:19
19 Theory of Production [Contd…] 53:43
20 Theory of Cost 55:48
21 Theory of Cost [Contd…] 54:48
22 Theory of Cost [Contd…] 49:16
23 Theory of Cost [Contd…] 56:12
24 Theory of Market 56:16
25 Perfect Competition 52:58
26 Perfect Competition [Contd…] 55:56
27 Monopoly 53:49
28 Monopoly [Contd…] 53:41
29 Monopoly [Contd…] 53:02
30 Monopolistic 53:10
31 Oligopoly 55:05
32 Oligopoly [Contd…] 53:37
33 Oligopoly [Contd…] 53:26
34 Oligopoly [Contd…] 52:03
35 Oligopoly and Game Theory 49:51
36 Oligopoly and Game Theory [Contd…] 54:01
37 Game Theory / Product Pricing 51:56
38 Product Pricing 54:31
39 Product Pricing [Contd…] 51:49
40 Summary 47:17
source: nptelhrd 2014年10月9日
Management - Managerial Economics by Dr. Trupti Mishra, Department of Management, IIT Bombay. For more details on NPTEL visit http://nptel.ac.in
01 Introduction to Managerial Economics 45:23
02 Introduction to Managerial Economics [Contd…] 53:31
03 Introduction to Managerial Economics [Contd…] 55:17
04 Basic Tools of Economic Analysis and Optimization Techniques-1 53:56
05 Basic Tools of Economic Analysis and Optimization Techniques-2 56:48
06 Basic Tools of Economic Analysis and Optimization Techniques-3 52:36
07 Basic Tools of Economic Analysis and Optimization Techniques-4 39:53
08 Theory of Demand 54:05
09 Theory of Demand [Contd…] 54:24
10 Theory of Demand [Contd…] 56:48
11 Theory of Demand [Contd…] 48:14
12 Consumer Behaviour 58:43
13 Consumer Behaviour [Contd…] 52:05
14 Elasticity of Supply 1:00:58
15 Demand Forecasting 46:27
16 Demand Forecasting [Contd…] 52:44
17 Theory of Production 54:46
18 Theory of Production [Contd…] 54:19
19 Theory of Production [Contd…] 53:43
20 Theory of Cost 55:48
21 Theory of Cost [Contd…] 54:48
22 Theory of Cost [Contd…] 49:16
23 Theory of Cost [Contd…] 56:12
24 Theory of Market 56:16
25 Perfect Competition 52:58
26 Perfect Competition [Contd…] 55:56
27 Monopoly 53:49
28 Monopoly [Contd…] 53:41
29 Monopoly [Contd…] 53:02
30 Monopolistic 53:10
31 Oligopoly 55:05
32 Oligopoly [Contd…] 53:37
33 Oligopoly [Contd…] 53:26
34 Oligopoly [Contd…] 52:03
35 Oligopoly and Game Theory 49:51
36 Oligopoly and Game Theory [Contd…] 54:01
37 Game Theory / Product Pricing 51:56
38 Product Pricing 54:31
39 Product Pricing [Contd…] 51:49
40 Summary 47:17
Theory of Computation by Somenath Biswas (IIT Kanpur)
# click the upper-left icon to select videos from the playlist
source: nptelhrd 2014年6月27日
Computer Science - Theory of Computation by Prof. Somenath Biswas, Computer Science and Engineering, IIT Kanpur. For more details on NPTEL visit http://nptel.ac.in
01 What is theory of computation? 51:52
02 Introduction to finite automaton. 1:01:04
03 Finite automata continued, deterministic finite automata(DFAs), 48:39
04 Regular languages, their closure properties. 1:03:57
05 DFAs solve set membership problems in linear time, pumping lemma. 55:20
06 More examples of nonregular languages, proof of pumping lemma 57:22
07 A generalization of pumping lemma, nondeterministic finite automata (NFAs) 1:01:34
08 Formal description of NFA, language accepted by NFA, such languages are also regular. 55:04
09 'Guess and verify' paradigm for nondeterminism. 53:50
10 NFA's with epsilon transitions. 1:03:27
11 Regular expressions, they denote regular languages. 59:33
12 Construction of a regular expression for a language given a DFA accepting it. 54:52
13 Closure properties continued. 1:01:07
14 Closure under reversal, use of closure properties. 46:44
15 Decision problems for regular languages. 55:30
16 About minimization of states of DFAs. Myhill-Nerode theorem. 49:00
17 Continuation of proof of Myhill-Nerode theorem. 55:07
18 Application of Myhill-Nerode theorem. DFA minimization. 1:00:03
19 DFA minimization continued. 57:06
20 Introduction to context free languages (cfls) 55:49
21 Languages generated by a cfg, leftmost derivation, more examples of cfgs and cfls. 56:11
22 Parse trees, inductive proof that L is L(G). All regular languages are context free. 52:31
23 Towards Chomsky normal forms: elimination of useless symbols 55:26
24 Simplification of cfgs continued, Removal of epsilon productions 1:07:16
25 Elimination of unit productions. Converting a cfg into Chomsky normal form. 55:32
26 Pumping lemma for cfls. Adversarial paradigm. 55:01
27 Completion of pumping lemma proof 52:52
28 Closure properties continued. cfls not closed under complementation. 55:31
29 Another example of a cfl whose complement is not a cfl. Decision problems for cfls. 45:30
30 More decision problems. CYK algorithm for membership decision. 53:17
31 Introduction to pushdown automata (pda). 56:02
32 pda configurations, acceptance notions for pdas. Transition diagrams for pdas 56:05
33 Equivalence of acceptance by empty stack and acceptance by final state. 48:08
34 Turing machines (TM): motivation, informal definition, example, transition diagram. 1:10:33
35 Execution trace, another example (unary to binary conversion). 43:19
36 Example continued. Finiteness of TM description 46:22
37 Notion of non-acceptance or rejection of a string by a TM. Multitrack TM 58:37
38 Simulation of multitape TMs by basic model. Nondeterministic TM (NDTM). 58:55
39 Counter machines and their equivalence to basic TM model. 56:05
40 TMs can simulate computers, diagonalization proof. 58:42
41 Existence of non-r.e. languages, recursive languages, notion of decidability. 1:01:02
42 Separation of recursive and r.e. classes, halting problem and its undecidability. 1:03:00
source: nptelhrd 2014年6月27日
Computer Science - Theory of Computation by Prof. Somenath Biswas, Computer Science and Engineering, IIT Kanpur. For more details on NPTEL visit http://nptel.ac.in
01 What is theory of computation? 51:52
02 Introduction to finite automaton. 1:01:04
03 Finite automata continued, deterministic finite automata(DFAs), 48:39
04 Regular languages, their closure properties. 1:03:57
05 DFAs solve set membership problems in linear time, pumping lemma. 55:20
06 More examples of nonregular languages, proof of pumping lemma 57:22
07 A generalization of pumping lemma, nondeterministic finite automata (NFAs) 1:01:34
08 Formal description of NFA, language accepted by NFA, such languages are also regular. 55:04
09 'Guess and verify' paradigm for nondeterminism. 53:50
10 NFA's with epsilon transitions. 1:03:27
11 Regular expressions, they denote regular languages. 59:33
12 Construction of a regular expression for a language given a DFA accepting it. 54:52
13 Closure properties continued. 1:01:07
14 Closure under reversal, use of closure properties. 46:44
15 Decision problems for regular languages. 55:30
16 About minimization of states of DFAs. Myhill-Nerode theorem. 49:00
17 Continuation of proof of Myhill-Nerode theorem. 55:07
18 Application of Myhill-Nerode theorem. DFA minimization. 1:00:03
19 DFA minimization continued. 57:06
20 Introduction to context free languages (cfls) 55:49
21 Languages generated by a cfg, leftmost derivation, more examples of cfgs and cfls. 56:11
22 Parse trees, inductive proof that L is L(G). All regular languages are context free. 52:31
23 Towards Chomsky normal forms: elimination of useless symbols 55:26
24 Simplification of cfgs continued, Removal of epsilon productions 1:07:16
25 Elimination of unit productions. Converting a cfg into Chomsky normal form. 55:32
26 Pumping lemma for cfls. Adversarial paradigm. 55:01
27 Completion of pumping lemma proof 52:52
28 Closure properties continued. cfls not closed under complementation. 55:31
29 Another example of a cfl whose complement is not a cfl. Decision problems for cfls. 45:30
30 More decision problems. CYK algorithm for membership decision. 53:17
31 Introduction to pushdown automata (pda). 56:02
32 pda configurations, acceptance notions for pdas. Transition diagrams for pdas 56:05
33 Equivalence of acceptance by empty stack and acceptance by final state. 48:08
34 Turing machines (TM): motivation, informal definition, example, transition diagram. 1:10:33
35 Execution trace, another example (unary to binary conversion). 43:19
36 Example continued. Finiteness of TM description 46:22
37 Notion of non-acceptance or rejection of a string by a TM. Multitrack TM 58:37
38 Simulation of multitape TMs by basic model. Nondeterministic TM (NDTM). 58:55
39 Counter machines and their equivalence to basic TM model. 56:05
40 TMs can simulate computers, diagonalization proof. 58:42
41 Existence of non-r.e. languages, recursive languages, notion of decidability. 1:01:02
42 Separation of recursive and r.e. classes, halting problem and its undecidability. 1:03:00
Why are there so many types of apples? - Theresa Doud
source: TED-Ed 2016年9月22日
View full lesson: http://ed.ted.com/lessons/why-are-the...
Have you ever walked into a grocery store and wondered where all the varieties of apples came from? You might find SnapDragon, Pixie Crunch, Cosmic Crisp, Jazz, or Ambrosia next to the more familiar Red Delicious and Granny Smith. So why are there so many types? Theresa Doud describes the ins and outs of breeding apples.
Lesson by Theresa Doud, animation by Adriatic Animation.
Walter Lewin--Physics II: Electricity and Magnetism (Spring 2002)
# click the up-left corner to select videos from the playlist
source: Lectures by Walter Lewin. 2015年3月13日
8.02x - Physics II: Electricity and Magnetism (Spring 2002)
--This is an upscaled 240p version of the video. For this introduction, unlike the actual lectures of 8.02x, there is no 480p version available.
--Links to lecture notes, assignments/solutions and exams/solutions are available via links in the descriptions of the individual lecture videos.
--8.02x - Help Sessions: https://www.youtube.com/watch?v=...
8.02x - Introduction 5:46
1 - Electric Charges and Forces - Coulomb's Law - Polarization 47:14
2 - Electric Field Lines, Superposition, Inductive Charging, Induced Dipoles 48:13
3 - Electric Flux, Gauss' Law, Examples 50:12
4 - Electrostatic Potential, Electric Energy, Equipotential Surfaces 49:02
5 - E= - grad V, Conductors, Electrostatic Shielding (Faraday Cage) 50:03
6 - High-voltage Breakdown, Lightning, Sparks, St-Elmo's Fire 53:02
7 - Capacitance, Electric Field Energy 49:24
8 - Polarization, Dielectrics, Van de Graaff Generator, Capacitors 50:54
9 - Electric Currents, Resistivity, Conductivity, Ohm's Law 48:43
10 - Batteries, Power, Kirchhoff's Rules, Circuits, Kelvin Water Dropper 50:01
11 - Magnetic Fields, Lorentz Force, Torques, Electric Motors (DC) 49:51
12 - First Exam Review 50:32
13 - Moving charges in B-fields, Cyclotrons, Mass Spectrometers, LHC 50:10
14 - Biot-Savart, div B = 0, High-voltage Power Lines, Leyden Jar revisited 50:10
15 - Ampere's Law, Solenoids, Kelvin Water Dropper (revisited) 47:18
16 - Electromagnetic Induction, Faraday's Law, Lenz Law, SUPER DEMO 51:24
17 - Motional EMF, Dynamos, Eddy Currents, Magnetic Breaking 50:47
18 - Displacement Current, Synchronous Motors, Explanation Secret Top 51:03
19 - Magnetic Levitation, Human ❤, Superconductivity, Aurora Borealis 49:35
20 - Inductance, RL Circuits, Magnetic Field Energy 51:50
21 - Magnetic Materials, Dia- Para- & Ferromagnetism 46:19
22 - Maxwell's Equations - 600 Daffodil Ceremony 53:54
23 - Second Exam Review 49:53
24 - Transformers, Car Coils, RC Circuits 50:08
25 - Driven LRC Circuits, Metal Detectors 50:10
26 Traveling Waves, Standing Waves, Musical Instruments 51:37
27 - Destructive Resonance, Electromagnetic Waves, Speed of Light 46:50
28 - Poynting Vector, Oscillating Charges, Polarization, Radiation Pressure 51:11
29 - Snell's Law, Index of Refraction, Huygen's Principle, Illusion of Color 49:54
30 - Polarizers, Malus' Law, Light Scattering, Blue Skies, Red Sunsets 51:24
31 - Rainbows, Fog Bows, Haloes, Glories, Sun Dogs 50:38
32 - Third Exam Review 51:20
33 - Double-slit Interference, Interferometers 50:52
34 - Diffraction, Gratings, Resolving Power, Angular Resolution 52:16
35 - Doppler Effect, Big Bang, Cosmology 48:44
36 - Farewell Special, My Early Days in Astrophysics, Huge Balloons 49:25
Kirchhoff's Loop Rule Is For The Birds 37:53
source: Lectures by Walter Lewin. 2015年3月13日
8.02x - Physics II: Electricity and Magnetism (Spring 2002)
--This is an upscaled 240p version of the video. For this introduction, unlike the actual lectures of 8.02x, there is no 480p version available.
--Links to lecture notes, assignments/solutions and exams/solutions are available via links in the descriptions of the individual lecture videos.
--8.02x - Help Sessions: https://www.youtube.com/watch?v=...
8.02x - Introduction 5:46
1 - Electric Charges and Forces - Coulomb's Law - Polarization 47:14
2 - Electric Field Lines, Superposition, Inductive Charging, Induced Dipoles 48:13
3 - Electric Flux, Gauss' Law, Examples 50:12
4 - Electrostatic Potential, Electric Energy, Equipotential Surfaces 49:02
5 - E= - grad V, Conductors, Electrostatic Shielding (Faraday Cage) 50:03
6 - High-voltage Breakdown, Lightning, Sparks, St-Elmo's Fire 53:02
7 - Capacitance, Electric Field Energy 49:24
8 - Polarization, Dielectrics, Van de Graaff Generator, Capacitors 50:54
9 - Electric Currents, Resistivity, Conductivity, Ohm's Law 48:43
10 - Batteries, Power, Kirchhoff's Rules, Circuits, Kelvin Water Dropper 50:01
11 - Magnetic Fields, Lorentz Force, Torques, Electric Motors (DC) 49:51
12 - First Exam Review 50:32
13 - Moving charges in B-fields, Cyclotrons, Mass Spectrometers, LHC 50:10
14 - Biot-Savart, div B = 0, High-voltage Power Lines, Leyden Jar revisited 50:10
15 - Ampere's Law, Solenoids, Kelvin Water Dropper (revisited) 47:18
16 - Electromagnetic Induction, Faraday's Law, Lenz Law, SUPER DEMO 51:24
17 - Motional EMF, Dynamos, Eddy Currents, Magnetic Breaking 50:47
18 - Displacement Current, Synchronous Motors, Explanation Secret Top 51:03
19 - Magnetic Levitation, Human ❤, Superconductivity, Aurora Borealis 49:35
20 - Inductance, RL Circuits, Magnetic Field Energy 51:50
21 - Magnetic Materials, Dia- Para- & Ferromagnetism 46:19
22 - Maxwell's Equations - 600 Daffodil Ceremony 53:54
23 - Second Exam Review 49:53
24 - Transformers, Car Coils, RC Circuits 50:08
25 - Driven LRC Circuits, Metal Detectors 50:10
26 Traveling Waves, Standing Waves, Musical Instruments 51:37
27 - Destructive Resonance, Electromagnetic Waves, Speed of Light 46:50
28 - Poynting Vector, Oscillating Charges, Polarization, Radiation Pressure 51:11
29 - Snell's Law, Index of Refraction, Huygen's Principle, Illusion of Color 49:54
30 - Polarizers, Malus' Law, Light Scattering, Blue Skies, Red Sunsets 51:24
31 - Rainbows, Fog Bows, Haloes, Glories, Sun Dogs 50:38
32 - Third Exam Review 51:20
33 - Double-slit Interference, Interferometers 50:52
34 - Diffraction, Gratings, Resolving Power, Angular Resolution 52:16
35 - Doppler Effect, Big Bang, Cosmology 48:44
36 - Farewell Special, My Early Days in Astrophysics, Huge Balloons 49:25
Kirchhoff's Loop Rule Is For The Birds 37:53
Walter Lewin: Help Sessions for Physics II: Electricity and Magnetism (Spring 2002)
# click the up-left corner to select videos from the playlist
source: Lectures by Walter Lewin. 2015年2月16日
8.02x - Module 01.01 - The Electric Field due to Two Point Charges. 5:34
8.02x - Module 01.02 - The Electric Field of a Line Charge. 11:56
8.02x - Module 01.03 - A Solid Metal Sphere. 5:08
8.02x - Module 01.04 - A Slab of Charge. 7:18
8.02x - Module 01.05 - An Electric Dipole. 21:11
8.02x - Module 02.01 - Electron Moving in an Electric Field. 4:14
8.02x - Module 02.02 - Conducting Spherical Shell with a Point Charge at the Center. 21:49
8.02x - Module 02.03 - Calculating the Potential of a Semi circular Rod by Integration. 4:32
8.02x - Module 02.04 - The Electric Field and Potential of Cylindrical Shells Carrying Charge. 9:39
8.02x - Module 02.05 - Two Metal Spheres Far Apart at the same Potential. 3:57
8.02x - Module 02.06 - The Potential of Two Opposite Charges. 4:26
8.02x - Module 02.07 - Parallel Plate Capacitor. 3:31
8.02x - Module 03.01 - Capacitors in Series and in Parallel. 9:03
8.02x - Module 03.02 - Spherical Capacitor. 4:17
8.02x - Module 03.03 - Parallel Plate Capacitor with a Variable Gap. 6:39
8.02x - Module 03.04 - Capacitor with Dielectric. 8:19
8.02x - Module 03.05 - A Cylindrical Capacitor with and without Dielectric. 10:34
8.02x - Module 04.01 - Current and Current Density. 4:46
8.02x - Module 04.02 - The Electric Field and Resistivity of a Wire drawing a Current. 2:19
8.02x - Module 04.03 - Charging and Discharging a Battery. 9:03
8.02x - Module 04.04 - Multi Batteries, Multi resistors, Multi loop Circuits. 6:18
8.02x - Module 04.05 - Current and Potential Differences in a Multi Loop Circuit with a Switch. 12:23
8.02x - Module 04.06 - Discharging a Capacitor. 3:38
8.02x - Module 05.01 - Electron Gyrating in a Magnetic Field. 4:24
8.02x - Module 05.02 - Determine Mass of Isotope. 6:17
8.02x - Module 05.03 - Force on a Wire drawing a Current in a Magnetic Field. 3:58
8.02x - Module 05.04 - Torque on a Current Loop. 7:09
8.02x - Module 05.05 - Magnetic Interaction of a Wire and a Rectangular Loop. 3:54
8.02x - Module 05.06 - Magnetic Field in the Center of a Rectangular Wire Loop. 9:25
8.02x - Module 05.07 - The Field of Two Semi circles using Biot Savart. 5:12
8.02x - Module 05.08 - Using Ampere's Law to Find the Field of a Metallic Cylinder and Shell. 9:49
8.02x - Module 06.02 - Wire with Varying Current Density. 7:46
8.02x - Module 06.03 - Magnetic Field from Moving Sheet of Charge, and Rotating Cylindrical Shell. 16:00
8.02x - Module 06.04 - Induced Current due to a Time Changing Magnetic Field. 10:43
8.02x - Module 06.05 - A Loop of Wire Moving in A Non Uniform B Field. 8:08
8.02x - Module 06.06 - Magnetic Flux due to an Infinite Wire through a Rectangular Loop. 4:53
8.02x - Module 07.01 - Displacement Current. 27:03
8.02x - Module 07.02 - Comparing the Displacement Current to the Conduction Current in a Wire. 9:56
8.02x - Module 08.01 - An Argument for the Displacement Current Term. 6:03
8.02x - Module 08.02 - Faraday's Law Applied to Circuits. RL Circuits 16:37
8.02x - Module 09.01 - Lightly Damped RLC Circuits. Faraday's Law 14:07
8.02x - Module 09.02 - Driven RLC Circuit - Resonance width 8:04
8.02x - Module 09.03 - LC Circuit in Series (not driven) - Variable Energy in L and in C. 3:52
8.02x - Module 09.04 - A Driven RLC Circuit. 5:02
8.02x - Module 09.05 - Another Driven RLC Circuit. 3:19
8.02x - Module 09.06 - Driven RLC Circuit at Resonance. LC Circuit in series (not driven) 3:42
80.2x - Module 09.07 - A Driven RLC Circuit in Series - Phasors 8:22
8.02x - Module 10.01 - Pressure Due to a Magnetic Field in a Solenoid. 12:43
8.02x - Module 10.02 - Inductance of Two Coaxial Cables (solenoids). 4:31
8.02x - Module 10.03 - An RLC Circuit in Series - Power - Resonance 10:08
8.02x - Module 10.04 - Ideal Step Up Transformer. 7:37
8.02x - Module 10.05 - Parallel RLC Circuit - Phase Angles - Impedance - Resonance 18:53
8.02x - Module 12.01 - EM Plane Waves - Poynting Vector - E-fields - B fields - Wavelength 10:33
8.02x - Module 12.02 - Spherical EM Waves - Luminosity - Energy Flux 7:29
8.02x - Module 12.03 - Radiation Pressure - Individual Photons - Momentum in photons 8:01
8.02x - Module 12.04 - Radiation Pressure from the Sun. 3:27
8.02x - Module 12.05 - Sailing using Radiation Pressure 5:54
8.02x - Module 12.06 - Standing Electromagnetic Waves 6:39
source: Lectures by Walter Lewin. 2015年2月16日
8.02x - Module 01.01 - The Electric Field due to Two Point Charges. 5:34
8.02x - Module 01.02 - The Electric Field of a Line Charge. 11:56
8.02x - Module 01.03 - A Solid Metal Sphere. 5:08
8.02x - Module 01.04 - A Slab of Charge. 7:18
8.02x - Module 01.05 - An Electric Dipole. 21:11
8.02x - Module 02.01 - Electron Moving in an Electric Field. 4:14
8.02x - Module 02.02 - Conducting Spherical Shell with a Point Charge at the Center. 21:49
8.02x - Module 02.03 - Calculating the Potential of a Semi circular Rod by Integration. 4:32
8.02x - Module 02.04 - The Electric Field and Potential of Cylindrical Shells Carrying Charge. 9:39
8.02x - Module 02.05 - Two Metal Spheres Far Apart at the same Potential. 3:57
8.02x - Module 02.06 - The Potential of Two Opposite Charges. 4:26
8.02x - Module 02.07 - Parallel Plate Capacitor. 3:31
8.02x - Module 03.01 - Capacitors in Series and in Parallel. 9:03
8.02x - Module 03.02 - Spherical Capacitor. 4:17
8.02x - Module 03.03 - Parallel Plate Capacitor with a Variable Gap. 6:39
8.02x - Module 03.04 - Capacitor with Dielectric. 8:19
8.02x - Module 03.05 - A Cylindrical Capacitor with and without Dielectric. 10:34
8.02x - Module 04.01 - Current and Current Density. 4:46
8.02x - Module 04.02 - The Electric Field and Resistivity of a Wire drawing a Current. 2:19
8.02x - Module 04.03 - Charging and Discharging a Battery. 9:03
8.02x - Module 04.04 - Multi Batteries, Multi resistors, Multi loop Circuits. 6:18
8.02x - Module 04.05 - Current and Potential Differences in a Multi Loop Circuit with a Switch. 12:23
8.02x - Module 04.06 - Discharging a Capacitor. 3:38
8.02x - Module 05.01 - Electron Gyrating in a Magnetic Field. 4:24
8.02x - Module 05.02 - Determine Mass of Isotope. 6:17
8.02x - Module 05.03 - Force on a Wire drawing a Current in a Magnetic Field. 3:58
8.02x - Module 05.04 - Torque on a Current Loop. 7:09
8.02x - Module 05.05 - Magnetic Interaction of a Wire and a Rectangular Loop. 3:54
8.02x - Module 05.06 - Magnetic Field in the Center of a Rectangular Wire Loop. 9:25
8.02x - Module 05.07 - The Field of Two Semi circles using Biot Savart. 5:12
8.02x - Module 05.08 - Using Ampere's Law to Find the Field of a Metallic Cylinder and Shell. 9:49
8.02x - Module 06.02 - Wire with Varying Current Density. 7:46
8.02x - Module 06.03 - Magnetic Field from Moving Sheet of Charge, and Rotating Cylindrical Shell. 16:00
8.02x - Module 06.04 - Induced Current due to a Time Changing Magnetic Field. 10:43
8.02x - Module 06.05 - A Loop of Wire Moving in A Non Uniform B Field. 8:08
8.02x - Module 06.06 - Magnetic Flux due to an Infinite Wire through a Rectangular Loop. 4:53
8.02x - Module 07.01 - Displacement Current. 27:03
8.02x - Module 07.02 - Comparing the Displacement Current to the Conduction Current in a Wire. 9:56
8.02x - Module 08.01 - An Argument for the Displacement Current Term. 6:03
8.02x - Module 08.02 - Faraday's Law Applied to Circuits. RL Circuits 16:37
8.02x - Module 09.01 - Lightly Damped RLC Circuits. Faraday's Law 14:07
8.02x - Module 09.02 - Driven RLC Circuit - Resonance width 8:04
8.02x - Module 09.03 - LC Circuit in Series (not driven) - Variable Energy in L and in C. 3:52
8.02x - Module 09.04 - A Driven RLC Circuit. 5:02
8.02x - Module 09.05 - Another Driven RLC Circuit. 3:19
8.02x - Module 09.06 - Driven RLC Circuit at Resonance. LC Circuit in series (not driven) 3:42
80.2x - Module 09.07 - A Driven RLC Circuit in Series - Phasors 8:22
8.02x - Module 10.01 - Pressure Due to a Magnetic Field in a Solenoid. 12:43
8.02x - Module 10.02 - Inductance of Two Coaxial Cables (solenoids). 4:31
8.02x - Module 10.03 - An RLC Circuit in Series - Power - Resonance 10:08
8.02x - Module 10.04 - Ideal Step Up Transformer. 7:37
8.02x - Module 10.05 - Parallel RLC Circuit - Phase Angles - Impedance - Resonance 18:53
8.02x - Module 12.01 - EM Plane Waves - Poynting Vector - E-fields - B fields - Wavelength 10:33
8.02x - Module 12.02 - Spherical EM Waves - Luminosity - Energy Flux 7:29
8.02x - Module 12.03 - Radiation Pressure - Individual Photons - Momentum in photons 8:01
8.02x - Module 12.04 - Radiation Pressure from the Sun. 3:27
8.02x - Module 12.05 - Sailing using Radiation Pressure 5:54
8.02x - Module 12.06 - Standing Electromagnetic Waves 6:39
Sarah Iqbal, Program Manager for Women, Business and the Law, The World Bank
source: Harvard University 2014年10月8日
Men and women throughout the world want to provide for their families and ensure their children have a good start in life. Often, the chance to start a business or get a job is the surest way to accomplish this goal. But how can we be sure that women have the same opportunities as men to fulfill their economic potential? The World Bank Group's Women, Business and the Law project presents a unique dataset examining how the law can help or impede women from working and earning an income and what can be done to improve women's economic rights.
Null Island: The Busiest Place That Doesn't Exist
source: MinuteEarth 2016年7月7日
Thanks to http://www.audible.com/minuteearth for sponsoring this video.
Thanks also to Tom Scott for helping write and narrate this video. Check out his amazing channel:
https://www.youtube.com/TomScottGo
Thanks also to our supporters on https://www.patreon.com/MinuteEarth
Alain Badiou Interview (1-2)
source: Eidos84 2010年10月12日
In a BBC HARDtalk interview broadcast on 24 March 2009, Stephen Sackur talks to French socialist philosopher Alain Badiou. As the world's richest economies plunge deeper into recession could there be a whiff of revolution in the air? Alain Badiou has been an intellectual hero of France's anti-capitalist left since the Paris street protests of 1968. His recent book 'The Meaning of Sarkozy', in which he attacked the French President, has caused a storm in France. But does anyone beyond Parisian café society believe communism is the answer to the current crisis?
Issues in Election Law: A Harvard Law School Lecture Series
# click the up-left corner to select videos from the playlist
source: HarvardLawSchool 2015年9月24日/上次更新：2016年5月3日
This yearlong lecture series sponsored by the Office of the Dean was offered in conjunction with the Issues in Election Law seminar taught by Professor Charles Fried in the Fall of 2015.
Harvard Law School Election Law Series: A talk by Charles Fried 58:26
Trevor Potter 1:01:45
Laurence Tribe 1:04:41
John Coates 53:48
Einer Elhauge 50:34
Spencer Overton on Voting Rights in the Age of Black Lives Matter and DREAMers 52:58
Stephen Ansolabehere, 'Bright Lines and Voting Rights' 43:41
Lucian Bebchuk, 'Shedding Light on Corporate Political Spending' 53:00
Lawrence Lessig, 'The Failed Branch: Is There Any Way to Fix Congress?' 57:56
source: HarvardLawSchool 2015年9月24日/上次更新：2016年5月3日
This yearlong lecture series sponsored by the Office of the Dean was offered in conjunction with the Issues in Election Law seminar taught by Professor Charles Fried in the Fall of 2015.
Harvard Law School Election Law Series: A talk by Charles Fried 58:26
Trevor Potter 1:01:45
Laurence Tribe 1:04:41
John Coates 53:48
Einer Elhauge 50:34
Spencer Overton on Voting Rights in the Age of Black Lives Matter and DREAMers 52:58
Stephen Ansolabehere, 'Bright Lines and Voting Rights' 43:41
Lucian Bebchuk, 'Shedding Light on Corporate Political Spending' 53:00
Lawrence Lessig, 'The Failed Branch: Is There Any Way to Fix Congress?' 57:56
Kenichi Nomaguchi: "Takumen: The Ramen Story" | Talks At Google
source: Talks at Google 2016年8月11日
Kenichi Nomaguchi, co-founder of the popular online ramen store Takumen, shares the challenges Takumen faced in the early stages, how they’ve been acquiring ramen shop owners to sell ramen on their site, and what’s their next growth strategy.
Penn Jillette on Libertarianism, Taxes, Trump, Clinton and Weed
source: Big Think 2016年8月20日
Take a deep breath, you're in for a ride. Here is Penn Jillette on Libertarianism, taxes, Trump, Clinton, Sanders, Gary Johnson, sex, drugs and Kurt Cobain. Jillette's latest book is "Presto!: How I Made Over 100 Pounds Disappear and Other Magical Tales" (http://goo.gl/jJDkz1).
Read more at BigThink.com: http://bigthink.com/videos/penn-jille...
Transcript - Let me lay on you what Libertarianism is to me. Once again I’m speaking for myself which is about as Libertarian as you can get. I do not believe I know what’s best for other people. I also don’t believe that other people know what’s best for other people. I can barely make decisions for myself. I do my best to make decisions for my family. Should my ten-year-old son take music lessons? That’s a hard question for our family. Do you want to push him into it or wait until he really wants it? Those are hard decisions. I have trouble making those for my family so making the decision of what someone else’s job in healthcare should be like who is in another part of the country who I’ve never met is not something I’m qualified or desirous to do. That’s Libertarianism. Libertarianism is taking a right on money and your first left on sex and looking for utopia straight ahead. To me the way I was brought up in western Massachusetts, kind of a New England philosophy. We believed in responsibility and keeping your nose out of other people’s business. We believed in live and let live I think to a fault. My mom and dad were older parents too. My mom was 45 when I was born so I was raised by another generation. You see my mom would be whatever – 120 now or 115 now. A whole other generation.
My mom was born – now you’re going to see that my math is wrong. My mom was born in 1909. She’s dead now. So it’s a whole different generation. And my mom’s feeling about absolutely everything was who cares. Her whole feeling on the gay rights movement was who cares who they want to get together with. It doesn’t matter to me. Her whole feeling on drugs. I have never had a sip of alcohol or any recreational drug in my life. That was true for my mother, true for my father, true for my sister. I don’t know how many generations it goes back but never. And yet my mom always thought that sure, any drug should be legal. If you’re living in a free country do whatever you want. Take responsibility for it. When you tell people about Libertarianism you just tell them we think you should take as little from other people by force as possible. And you should be able to do whatever you think is right. Now that’s a pretty heavy thing I’m saying. Because I’m saying that if there’s an 18-year-old girl who is the greatest math whiz that we have in this country, let’s say she’s the smartest person in math we have anywhere. And let’s say we give her a full scholarship to go to whatever school she wants to go to – Stanford, MIT, wherever she wants to go. And she decides she wants to work at McDonald’s and get pregnant at the age of 19. That’s her decision. Read Full Transcript Here: http://goo.gl/00HG5v.
Real-Time Systems by Rajib Mall (IIT Kharagpur)
# click the upper-left icon to select videos from the playlist
source: nptelhrd 2011年9月15日
Computer Science-Real-Time Systems by Dr. Rajib Mall, Department of Computer Science & Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
01 Introduction 52:25
02 Real - Time System Characteristics 54:57
03 Few Basic Issues 45:04
04 Modelling Timing Constraints 55:40
05 Modelling Timing Constraints (Contd.) 55:46
06 Basics of Real - Time Task Scheduling 43:48
07 Cyclic Scheduler 56:58
08 Event - Driven Scheduling 51:30
09 Rate Monotonic Scheduler 55:36
10 RMA Scheduling : Further Issues 53:06
11 Deadline Monotonic Scheduling and Other Issues 53:26
12 Few Issues in Use of RMA 55:13
13 Resource Sharing Among Real-Time Tasks 53:55
14 Highest Locker and Priority Ceiling Protocols 55:08
15 An Analysis of Priority Ceiling Protocol 58:06
16 Handling Task Dependencies 53:54
17 Real-Time Task Scheduling on Multiprocessors and Distributed Systems 54:17
18 Real-Time Task Scheduling on Multiprocessors and Distributed Systems (Contd.) 55:29
19 Clock Synchronization in Distributed Real-Time Systems 55:13
20 Internal Clock Synchronization in Presence of Byzantine Clocks 53:49
21 A Few Basic Issues in Real-Time Operating Systems 55:14
22 Tutorial-I 56:28
23 A Few Basic Issues in Real-Time Operating Systems (Contd.) 54:56
24 Unix and Windows as RTOS 54:45
25 Real - Time POSIX 54:24
26 Real - Time POSIX (Contd.) 55:49
27 Open Source and Commercial RTOS 53:14
28 Open Source and Commercial RTOS (Contd.) 55:15
29 Benchmarking Real-Time Computer & Operating Systems 55:00
30 Benchmarking Real-Time Computer & Operating Systems (Contd.) 56:49
31 Real - Time Communications 55:08
32 Few Basic Issues in Real - Time Communications 54:53
33 Review of Computer Networking 56:00
34 Real-Time Communication in a LAN 55:34
35 Real-Time Communication in a LAN (Contd.) 54:55
36 Performance of Two Real -Time Communication Protocols 54:52
37 Real-Time Communication over Packet Switched Networks 57:13
38 Real - Time Communication over Packet Switched Networks (Contd.) 55:32
39 Real - Time Communication over Packet Switched Networks (Contd.) 55:14
40 Real - Time Databases 57:17
source: nptelhrd 2011年9月15日
Computer Science-Real-Time Systems by Dr. Rajib Mall, Department of Computer Science & Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
01 Introduction 52:25
02 Real - Time System Characteristics 54:57
03 Few Basic Issues 45:04
04 Modelling Timing Constraints 55:40
05 Modelling Timing Constraints (Contd.) 55:46
06 Basics of Real - Time Task Scheduling 43:48
07 Cyclic Scheduler 56:58
08 Event - Driven Scheduling 51:30
09 Rate Monotonic Scheduler 55:36
10 RMA Scheduling : Further Issues 53:06
11 Deadline Monotonic Scheduling and Other Issues 53:26
12 Few Issues in Use of RMA 55:13
13 Resource Sharing Among Real-Time Tasks 53:55
14 Highest Locker and Priority Ceiling Protocols 55:08
15 An Analysis of Priority Ceiling Protocol 58:06
16 Handling Task Dependencies 53:54
17 Real-Time Task Scheduling on Multiprocessors and Distributed Systems 54:17
18 Real-Time Task Scheduling on Multiprocessors and Distributed Systems (Contd.) 55:29
19 Clock Synchronization in Distributed Real-Time Systems 55:13
20 Internal Clock Synchronization in Presence of Byzantine Clocks 53:49
21 A Few Basic Issues in Real-Time Operating Systems 55:14
22 Tutorial-I 56:28
23 A Few Basic Issues in Real-Time Operating Systems (Contd.) 54:56
24 Unix and Windows as RTOS 54:45
25 Real - Time POSIX 54:24
26 Real - Time POSIX (Contd.) 55:49
27 Open Source and Commercial RTOS 53:14
28 Open Source and Commercial RTOS (Contd.) 55:15
29 Benchmarking Real-Time Computer & Operating Systems 55:00
30 Benchmarking Real-Time Computer & Operating Systems (Contd.) 56:49
31 Real - Time Communications 55:08
32 Few Basic Issues in Real - Time Communications 54:53
33 Review of Computer Networking 56:00
34 Real-Time Communication in a LAN 55:34
35 Real-Time Communication in a LAN (Contd.) 54:55
36 Performance of Two Real -Time Communication Protocols 54:52
37 Real-Time Communication over Packet Switched Networks 57:13
38 Real - Time Communication over Packet Switched Networks (Contd.) 55:32
39 Real - Time Communication over Packet Switched Networks (Contd.) 55:14
40 Real - Time Databases 57:17
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