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The Nervous System, Part 2 - Action! Potential!: Crash Course A&P #9
 
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•••SUBBABLE MESSAGE••• TO: Carla FROM: Christopher Next stop is whenever. Just be like, "stop." *** You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** What do you and a sack of batteries have in common? Today, Hank explains. -- Table of Contents: Ion Channels Regulate Electrochemistry to Create Action Potential 4:51 Resting State 3:22 Depolarization 6:09 Repolarization 7:35 Hyperpolarization 8:00 -- CRASH COURSE KIDS! http://www.youtube.com/crashcoursekids Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 3339517 CrashCourse
Sensation and Perception: Crash Course Psychology #5
 
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Want more videos about psychology every Monday and Thursday? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych! Just what is the difference between sensing and perceiving? And how does vision actually work? And what does this have to do with a Corgi? In this episode of Crash Course Psychology, Hank takes us on a journey through the brain to better explain these and other concepts. Plus, you know, CORGI! -- Table of Contents: Sensation vs. Perception :54 Sense Thresholds 2:11 Neurology of Vision 4:23 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 2590213 CrashCourse
What is SENSORY THRESHOLD? What does SENSORY THRESHOLD mean? SENSORY THRESHOLD meaning
 
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What is SENSORY THRESHOLD? What does SENSORY THRESHOLD mean? SENSORY THRESHOLD meaning - SENSORY THRESHOLD definition - SENSORY THRESHOLD explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. In psychophysics, sensory threshold is the weakest stimulus that an organism can detect. Unless otherwise indicated, it is usually defined as the weakest stimulus that can be detected half the time, for example, as indicated by a point on a probability curve. Methods have been developed to measure thresholds in any of the senses. The first systematic studies to determine sensory thresholds were conducted by Ernst Heinrich Weber, a physiologist and pioneer of experimental psychology at the Leipzig University. His experiments were intended to determine the absolute and difference, or differential, thresholds. Weber was able to define absolute and difference threshold statistically which lead to the establishment of Weber’s Law and the concept of just noticeable difference to describe threshold perception of stimuli. Following Weber’s work, Gustav Fechner, a pioneer of psychophysics, studied the relationship between the physical intensity of a stimulus and the psychologically perceived intensity of the stimulus. Comparing the measured intensity of sound waves with the perceived loudness, Fechner concluded that the intensity of a stimulus changes in proportion to the logarithm of the stimulus intensity. His findings would lead to the creation of the decibel scale. Several different sensory thresholds have been defined; Absolute threshold: the lowest level at which a stimulus can be detected. Recognition threshold: the level at which a stimulus can not only be detected but also recognised. Differential threshold: the level at which an increase in a detected stimulus can be perceived. Terminal threshold: the level beyond which a stimulus is no longer detected. Measuring and Testing Sensory Thresholds Defining and measuring sensory thresholds requires setting the sensitivity limit such that the perception observations lead to the absolute threshold. The level of sensitivity is usually assumed to be constant in determining the threshold limit. There are three common methods used to determine sensory thresholds: Method of Limits: In the first step, the subject is stimulated by strong, easily detectable stimuli that are decreased stepwise (descending sequence) until he/she cannot detect the stimulus. Then another stimulation sequence is applied called ascending sequence. In this sequence, stimulus intensity increases from subthreshold to easily detectable. Both sequences are repeated several times. This yields several momentary threshold values. In the following step, mean values are calculated for ascending and descending sequences separately. The mean value will be lower for descending sequences. In case of audiometry, the difference of the means in case of ascending vs. descending sequences has a diagnostic importance. In the final step, average of the previously calculated means will result the absolute threshold. Method of constant stimuli: Stimuli of varying intensities are presented in random order to a subject. Intensities involve stimuli which are surely subthreshold and stimuli which are surely supra-threshold. For the creation of the series, the approximate threshold judged by a simpler method (i.e.: by the method of limits). The random sequences are presented to the subject several times. The strength of the stimulus, perceived in more than half of the presentations will be taken as the threshold. ...
Views: 3442 The Audiopedia
What is ABSOLUTE THRESHOLD? What does ABSOLUTE THRESHOLD mean? ABSOLUTE THRESHOLD meaning
 
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What is ABSOLUTE THRESHOLD? What does ABSOLUTE THRESHOLD mean? ABSOLUTE THRESHOLD meaning - ABSOLUTE THRESHOLD definition - ABSOLUTE THRESHOLD explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. In neuroscience and psychophysics, an absolute threshold was originally defined as the lowest level of a stimulus – light, sound, touch, etc. – that an organism could detect. Under the influence of signal detection theory, absolute threshold has been redefined as the level at which a stimulus will be detected a specified percentage (often 50%) of the time. The absolute threshold can be influenced by several different factors, such as the subject's motivations and expectations, cognitive processes, and whether the subject is adapted to the stimulus. The absolute threshold can be compared to the difference threshold, which is the measure of how different two stimuli must be for the subject to notice that they are not the same. A landmark 1942 experiment by Hecht, Shlaer, and Pirenne assessed the absolute threshold for vision. They tried to measure the minimum number of photons the human eye can detect 60% of the time, using the following controls: Dark adaptation – the participants were completely dark adapted (a process lasting forty minutes) to optimise their visual sensitivity. Location – the stimulus was presented to an area where there is a high density of rod cells, 20 degrees to the left of the point of focus (i.e., 20 degrees to the right of the fovea). Stimulus size – the stimulus had a diameter of 10 minutes of arc (1 minute=1/60th of a degree). Although not explicitly mentioned in the original research paper, this ensured that the light stimulus fell only on rod cells connected to the same nerve fibre (this is called the area of spatial summation). Wavelength – the stimulus wavelength matched the maximum sensitivity of rod cells (510 nm). Stimulus duration – 0.001 second (1 ms). The researchers found that the emission of only 54-148 photons could elicit visual experience. However, only about half of these entered the retina, due to reflection (from the cornea), absorption, and other factors relating to transmittance of the ocular media. The researchers estimated that 5 to 14 of the estimated 500 rods in the test area would each absorb one photon, with a 4% chance that one rod would absorb two photons. A second absolute threshold for vision involves the minimum photon flux (photons per second per unit area). In this case the light covers a wide field over an extended period of time instead of being concentrated on one spot on the retina in a short burst. Knowing the pupil diameter and the wavelength of the light, the result can be described in terms of luminance (~0.000001 candela per square meter or 10-6 cd/m2) or retinal illuminance (~0.00002 Trolands).
Views: 3960 The Audiopedia
Neuron action potential - physiology
 
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What is a neuron action potential? Neurons use ions and electrical charges to relay signals from one neuron to the next, called an action potential. Find more videos at http://osms.it/more. Hundreds of thousands of current & future clinicians learn by Osmosis. We have unparalleled tools and materials to prepare you to succeed in school, on board exams, and as a future clinician. Sign up for a free trial at http://osms.it/more. Subscribe to our Youtube channel at http://osms.it/subscribe. Get early access to our upcoming video releases, practice questions, giveaways, and more when you follow us on social media: Facebook: http://osms.it/facebook Twitter: http://osms.it/twitter Instagram: http://osms.it/instagram Our Vision: Everyone who cares for someone will learn by Osmosis. Our Mission: To empower the world’s clinicians and caregivers with the best learning experience possible. Learn more here: http://osms.it/mission Medical disclaimer: Knowledge Diffusion Inc (DBA Osmosis) does not provide medical advice. Osmosis and the content available on Osmosis's properties (Osmosis.org, YouTube, and other channels) do not provide a diagnosis or other recommendation for treatment and are not a substitute for the professional judgment of a healthcare professional in diagnosis and treatment of any person or animal. The determination of the need for medical services and the types of healthcare to be provided to a patient are decisions that should be made only by a physician or other licensed health care provider. Always seek the advice of a physician or other qualified healthcare provider with any questions you have regarding a medical condition.
Views: 189127 Osmosis
How To Calculate Your FTP (Functional Threshold Power)
 
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How to calculate your Functional Threshold Power (FTP) and Functional Threshold Heart Rate (FTHR). Subscribe to GCN: http://gcn.eu/SubscribeToGCN Whether it's a one-hour test or a 20-min test, using a power meter or just a heart-rate monitor, there are several ways to calculate bio-mechanical data that will allow you to maximize your endurance performance. Buy GCN Cycling Kit! Click here: http://gcn.eu/BuyGCNKitYT Get GCN T-Shirts and hoodies: http://gcn.eu/GCN-Gear About GCN: The Global Cycling Network puts you in the centre of the action: from the iconic climbs of Alpe D’Huez and Mont Ventoux to the cobbles of Flanders, everywhere there is road or pavé, world-class racing and pro riders, we will be there bringing you action, analysis and unparalleled access every week, every month, and every year. We show you how to be a better cyclist with our bike maintenance videos, tips for improving your cycling, cycling top tens, and not forgetting the weekly GCN Show. Join us on YouTube’s biggest and best cycling channel to get closer to the action and improve your riding! Welcome to the Global Cycling Network | Inside cycling Thanks to our sponsors: Santini cycling kit: http://gcn.eu/BuyGCNKitYT Kask helmets: http://gcn.eu/1FrbcHK fi’zi:k shoes: http://gcn.eu/1tsXI7S Youtube Channel - http://gcn.eu/gcnYT Facebook - http://gcn.eu/gcnFb Google+ - http://gcn.eu/gcnGPlus Twitter - http://gcn.eu/gcnTW Leave us a comment below!
Views: 486286 Global Cycling Network
Planck Const.avi
 
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An experiment to determine the Planck Constant using the photoelectric effect. A graph of stopping potential against frequency gives a gradient = h/e and a y-intercept = - hf0/e
Views: 35853 Carmel Azzopardi
Decision Tree Tutorial in 7 minutes with Decision Tree Analysis & Decision Tree Example (Basic)
 
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Clicked here http://www.MBAbullshit.com/ and OMG wow! I'm SHOCKED how easy.. No wonder others goin crazy sharing this??? Share it with your other friends too! Fun MBAbullshit.com is filled with easy quick video tutorial reviews on topics for MBA, BBA, and business college students on lots of topics from Finance or Financial Management, Quantitative Analysis, Managerial Economics, Strategic Management, Accounting, and many others. Cut through the bullshit to understand MBA!(Coming soon!) http://www.youtube.com/watch?v=a5yWr1hr6QY
Views: 550849 MBAbullshitDotCom
How does your brain respond to pain? - Karen D. Davis
 
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View full lesson: http://ed.ted.com/lessons/how-does-your-brain-respond-to-pain-karen-d-davis Ouch! Everyone experiences pain -- but why do some people react to the same painful stimulus in different ways? And what exactly is pain, anyway? Karen D. Davis walks you through your brain on pain, illuminating why the "pain experience" differs from person to person. Lesson by Karen D. Davis, animation by Brett Underhill.
Views: 1789548 TED-Ed
Oracle Enterprise Manager: Advanced Threshold Management
 
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Advanced Thresholds allow you to define and manage alert thresholds that are either adaptive (self-adjusting) or time-based (static). There are monitoring situations in which different workloads for a target occur at regular (expected) intervals. Under these conditions, a static alert threshold would prove to be inaccurate. For example, the accurate alert thresholds for a database performing Online Transaction Process (OLTP) during the day and batch processing at night would be different. Similarly, database workloads can change based purely on different time periods, such as weekday versus weekend. In both these situations, fixed, static values for thresholds might result in false alert reporting. See Enterprise manager online documentation for more information: http://docs.oracle.com/cd/E73210_01/EMADM/GUID-02356AB5-4B03-46AE-8354-2E9517A8F439.htm#EMADM15123 ================================= To improve the video quality, click the gear icon and set the Quality to 1080p/720p HD. For more information, see http://www.oracle.com/goto/oll Copyright © 2016 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
012 The Absolute and Relative Refractory Periods
 
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http://www.interactive-biology.com - When can an axon be restimulated to produce an action potential? After the Absolute Refractory Period has finished. It's possible to cause another action potential during the relative refractory period, but it takes a stronger stimulus. Watch this Video for more info
Views: 239078 Interactive Biology
Using Standard Curve to Estimate DNA Quantity - Forensic Focus #4
 
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Submit your questions at http://www.thermofisher.com/forensicfocus Everyone wants to know how much DNA is in their extract, but then they ask: how can I tell if my estimate is accurate? The standard curve holds the answers. A standard curve is a tool that allows us to estimate the DNA concentration of unknown samples by comparing them to standards with known DNA concentrations. In this example, the standards consist of a 10-fold dilution series ranging from 50 ng/ul down to 5 pg/ul. During each PCR cycle, the amount of fluorescent signal for each standard in the dilution seies is measured. When the fluorescent signal crosses the detection threshold the cycle number is recorded as a Ct value, or threshold cycle value. The Ct value is what ultimately is used to create the standard curve. The Ct values are inversely proportional to the concentration of DNA in the standards. The high-concentration, 50 ng/ul standard will cross the detection threshold first, generating a “low” Ct. The low-concentration, 5 pg/ul standard will take many more cycles to cross the same threshold - and therefore the Ct will be higher. The Ct values for each dilution of the standard curve are plotted on a graph, and the software generates a regression line that fits the data. Because the standards are 10-fold dilutions, we expect the change in Ct from one standard to the next to be uniform. An uneven distribution of Ct values might indicate that the dilution series was not accurately pipetted. Let’s take a look at the standard curve for a specific DNA target, the small autosomal target. The X axis is the log of the known standard concentrations. The Y axis is the Ct value of each standard. Now, Do you see the quality metrics at the bottom of the screen? Let’s review Slope, Y intercept, and R2.? The slope measures the efficiency of the PCR reaction. In a perfect world, a slope of -3.3 indicates that the PCR reaction is 100% efficient; the target DNA is doubled each cycle. Two copies become four; four become eight; and so on. The Y intercept is the expected Ct value for a 1ng/ul sample. The R2 value measures how well the regression line fits the data points. A line that fits the data points perfectly has an R2 of 1. If your data points are scattered, the R2 value for the line will be lower. The Ct values of your standards affect the slope, the Y intercept, and the R2 value. It is very important to prepare the standard dilution series carefully to ensure consistent and accurate results! Running the standards in duplicate can help ensure you have a high quality standard curve. Once your standard curve passes the metrics test, it can be used to evaluate an unknown sample! The Ct value of the unknown sample is measured, and compared to the standard curve to estimate the DNA concentration of the unknown sample. Couldn’t be simpler! That’s it for today. If you have other questions, just click on the link below. And don’t forget- when in doubt, refer Back to the Bases!
How to detect outliers in SPSS
 
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I describe and discuss the available procedure in SPSS to detect outliers. The procedure is based on an examination of a boxplot. SPSS can identify two different types of outliers, based on two different inter-quartile range rule multipliers. Neither multiplier (1.5 and 3.0) is ideal, however, with a bit of extra work, you can calculate an outlier based on the 2.2 multiplier. I demonstrate how to do so here: https://www.youtube.com/watch?v=WSflSmcNRFI
Views: 117531 how2stats
Activation Energy
 
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039 - Activation Energy In this video Paul Andersen explains how the activation energy is a measure of the amount of energy required for a chemical reaction to occur. Due to the collision theory the activation energy requires proper energy and orientation of the colliding molecules. The Maxwell-Boltzman distribution can be used to determine the number of particles above and below this point. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: "Reactions & Rates." PhET. Accessed October 20, 2013. http://phet.colorado.edu/en/simulation/reactions-and-rates. Sharayanan. English : Depicts the Main Idea Behind the Kinetic Theory of Gases — That Is, Gases Are Made of Molecules Whose Permanent Hits on the Walls of the Container Is Perceived as Pressure, and Whose Excitement Is Related to Temperature., August 8, 2007. Own work. http://commons.wikimedia.org/wiki/File:Kinetic_theory_of_gases.svg.
Views: 231728 Bozeman Science
045 The Pacemaker Potential of the SA Node and the AV Node
 
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http://www.interactive-biology.com - In this episode, I talk about how the Pacemaker Potential results in the signal that causes the heart to beat. I show how the greater conductance for Sodium ions in the Pacemaker Cells in the S.A. Node cause the cells to depolarize, opening voltage-gated Calcium channels when the membrane potential reaches threshold. This results in the action potential. Then Potassium channel open, letting Potassium ions leave, repolarizing the cells. Enjoy! http://www.interactive-biology.com
Views: 294879 Interactive Biology
2-Minute Neuroscience: Action Potential
 
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In my 2-Minute Neuroscience videos I explain neuroscience topics in 2 minutes or less. In this video, I discuss the action potential. The term "action potential" refers to the electrical signaling that occurs within neurons. This electrical signaling leads the release of neurotransmitters, and therefore is important to the chemical communication that occurs between neurons. Thus, understanding the action potential is important to understanding how neurons communicate. For more neuroscience articles, videos, and a complete neuroscience glossary, check out my website at www.neuroscientificallychallenged.com ! The chart displayed in this video is a CC image courtesy of OpenStax College. It is an illustration from Anatomy & Physiology, Connexions Web site. http://cnx.org/content/col11496/1.6/, Jun 19, 2013. TRANSCRIPT: Welcome to 2 minute neuroscience, where I simplistically explain neuroscience topics in 2 minutes or less. In this installment I will discuss the action potential. The action potential is a momentary reversal of membrane potential that is the basis for signaling within neurons. If you’re unfamiliar with membrane potential, you may want to watch my video on membrane potential before watching this video. The resting membrane potential of a neuron is around -70 mV. When neurotransmitters bind to receptors on the dendrites of a neuron, they can have an effect on the neuron known as depolarization. This means that they make the membrane potential less polarized, or cause it to move closer to 0. This chart shows membrane potential on the y axis and time on the x axis. When neurotransmitters interacting with receptors causes repeated depolarization of the neuron, eventually the neuron reaches what is known as its threshold membrane potential. In a neuron with a membrane potential of -70 mV, this is generally around -55 mV. When threshold is reached, a large number of sodium channels open, allowing positively charged sodium ions into the cell. This causes massive depolarization of the neuron as the membrane potential reaches 0 and then becomes positive. This is known as the rising phase of the action potential. This influx of positive ions initiates the action potential, which then travels down the neuron. Eventually the action potential reaches its peak, sodium channels close and potassium channels open, which allow potassium to flow out of the cell. This loss of positive potassium ions promotes repolarization which is known as the falling phase of the action potential. The neuron returns to resting membrane potential, but actually to overshoots it and the cell becomes hyperpolarized. During this phase, known as the refractory period, it is very difficult to cause the neuron to fire again. Eventually the potassium channels close and the membrane returns to resting membrane potential, ready to be activated again. The signal generated by the action potential travels down the neuron and can cause the release of neurotransmitter at the axon terminals to pass the signal to the next neuron.
Vision: Crash Course A&P #18
 
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Next stop in our tour of your sensory systems? VISION. With a little help from an optical illusion, we take a look inside your eyes to try to figure out how your sense of vision works -- and how it can be tricked. *** Table of Contents The Structure of the Eye 2:31 The Fibrous, Vascular, and Inner Layers 3:33.2 The Retina 4:56 Photoreceptors, Bipolar Cells, and Ganglion Neurons 5:09.2 Rods and Cones 6:07.5 *** Crash Course is now on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Jan Schmid, Steve Marshall, Anna-Ester Volozh, Sandra Aft, Brad Wardell, Christian Ludvigsen, Robert Kunz, Jason, A Saslow, Jacob Ash, Jeffrey Thompson, Jessica Simmons, James Craver, Simun Niclasen, SR Foxley, Roger C. Rocha, Nevin, Spoljaric, Eric Knight, Elliot Beter, Jessica Wode ***SUBBABLE MESSAGES*** TO: THE WORLD FROM: Future Is The Future Awesome gender neutral vintage clothing: http://futureisthefuture.com -- TO: Beth FROM: Joey I Love You Beth Ronie With All Of My Heart! ***SUPPORTER THANK YOU!*** Thank you so much to all of our awesome supporters for their contributions to help make Crash Course possible and freely available for everyone forever: Sofie Harning Sour Bags & Totes Don Phillips Christian Dodson Christian Dodson (once again) Christian Dodson (again) Christian Dodson (NO EDGE) Sour Bags & Totes tuseroni Amy Guerrero -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1629472 CrashCourse
Activation energy and Enzymes (Animation)
 
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This animation explains about activation energy and enzymes. Enzyme activation energy is the most important thing for enzyme catalysis reaction. Watch the video for details. http://shomusbiology.com/ Download the study materials here- http://shomusbiology.com/bio-materials.html Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology- Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching We are social. Find us on different sites here- Our Website – www.shomusbiology.com Facebook page- https://www.facebook.com/ShomusBiology/ Twitter - https://twitter.com/shomusbiology SlideShare- www.slideshare.net/shomusbiology Google plus- https://plus.google.com/113648584982732129198 LinkedIn - https://www.linkedin.com/in/suman-bhattacharjee-2a051661 Youtube- https://www.youtube.com/user/TheFunsuman Thank you for watching In chemistry, activation energy is a term introduced in 1889 by the Swedish scientist Svante Arrhenius that is defined as the energy that must be overcome in order for a chemical reaction to occur. Activation energy may also be defined as the minimum energy required to start a chemical reaction. The activation energy of a reaction is usually denoted by Ea and given in units of kilojoules per mole. Activation energy can be thought of as the height of the potential barrier (sometimes called the energy barrier) separating two minima of potential energy (of the reactants and products of a reaction). For a chemical reaction to proceed at a reasonable rate, there should exist an appreciable number of molecules with energy equal to or greater than the activation energy. At a more advanced level, the Arrhenius Activation energy term from the Arrhenius equation is best regarded as an experimentally determined parameter that indicates the sensitivity of the reaction rate to temperature. There are two objections to associating this activation energy with the threshold barrier for an elementary reaction. First, it is often unclear as to whether or not reaction does proceed in one step; threshold barriers that are averaged out over all elementary steps have little theoretical value. Second, even if the reaction being studied is elementary, a spectrum of individual collisions contributes to rate constants obtained from bulk ('bulb') experiments involving billions of molecules, with many different reactant collision geometries and angles, different translational and (possibly) vibrational energies - all of which may lead to different microscopic reaction rates. Source of the article published in description is Wikipedia. I am sharing their material. © by original content developers of Wikipedia. Link- http://en.wikipedia.org/wiki/Main_Page
Views: 28805 Shomu's Biology
Charles Burroughs: "Surface and Threshold: Antinomies of the Architectural Facade"
 
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Architecture Spring 2018 Lecture Series - February 13, 2018 in Slocum Hall. Historian Charles Burroughs speaks to the significance of the great flowering of the façade during the Renaissance. Since 2014, when he retired as Smith Professor of Humanities in the departments of Classics and Art History at Case Western Reserve University, Charles Burroughs has been Adjunct Professor of Art History at Geneseo. Previously he taught at SUNY Binghamton, UC Berkeley Architecture School, Northwestern, and the Rome Program of Trinity College.  He has degrees from Oxford (BA) and London (PhD), and was a visiting member of the Institute for Advanced Study, Princeton. His scholarly interests encompass Italian architecture and urbanism of the 14th to 17th centuries, Renaissance painting and art writing (he has published on Alberti, Michelangelo, and Botticelli, on whom he is writing a book), and plantation landscapes in the Americas, including the Hudson Valley. Since settling in Rochester he has been working on a revisionist account of Frederick Law Olmsted’s plans for the park system, and on the impact of Jane Jacobs’ ideas about city life on the design, by an associate of hers, of an academic facility in upstate New York, a building that marked an early departure from modernist orthodoxy. Anyone who has strolled through a historic Italian city recalls streets framed by impressive house facades, forming a surprisingly uniform backdrop to the choreography of the streets while registering, more or less subtly, the status of individual occupants. The architectural facade has a history. As part of a building, the facade arises in late medieval Italy and eventually meets a fatal challenge in the reaction against 20th century modernism (its more recent resurrection is not my topic). The facade is also a cultural phenomenon, coinciding with the era of portraiture, the Renaissance emphasis on the human face, not so much as a window into the soul as a crucial site of dissimulation and insincerity. For Renaissance architects the facade was a surface requiring a harmonious and unified design, incorporating an element, the entrance, that potentially disturbs the integrity of the whole. Especially baroque facades concentrate the typical rhetorical dimension at the portal, as key interface of interior and exterior, the source of (claimed) power and the arena of its projection. This talk will review examples in Italy and France of the tension in many facades of between the expression of passage and the implementation of ideal principles of design, and will discuss inventive responses to the challenge of the facade.
Animation | How a P N junction semiconductor works | forward reverse bias | diffusion drift current
 
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This simple animation video clearly explains the topics P-N junction semi conductor or diode, what is forward bias and reverse bias, what is diffusion current and drift current, what is avalanche breakdown etc What is a P -- N junction semiconductor and how is it formed? The PN junction semi conductor is a combination of P type semiconductor with N type semiconductor to achieve the practical utility of both. It's formed, when a P type semi conductor is joined to an N type semiconductor. The P type semiconductor has free holes with positive charged and the N type semiconductor has free electrons with negatively charge. What happens when a PN junction is made? When P and N semiconductors are joined to make the PN junction semiconductor diode, the electrons near the PN junction jump from N to P and holes near the junction jump from P to N. This phenomenon creates a space charge region or a depletion layer as shown in the video. At this space charge region due to the movement we have electrons in P region and holes in N region. For some time the electrons move back from P to N in the space region or depletion layer and some holes move back from N to P in the space region. This continues to happen till equilibrium is reached. This movement of electrons and holes in the space region or diffusion layer gives rise to Diffusion current. What is Forward bias and how does it occur? Forward bias occurs when the positive terminal of battery is connected to the P region and the negative terminal of battery is connected to the N region. In this condition what happens is the positive terminal repels the holes towards the junction and the negative terminal repels the electrons towards the junction. Due to this repulsion, the depletion region or space region narrows down as shown in the video. But at a particular condition, If the voltage in the forward bias is above a specified range, the electrons in the N region drifts through the junction and migrates to the P region and the holes in the P region drifts through the junction and migrates to the N region. Now the current flows across the circuit and this current are called the Drift current. What is Reverse bias and how does it occur? Reverse bias occurs when the negative terminal of the battery is connected with the N region and positive terminal with the P region. In this condition holes (positively charged) from the P region get attracted to the negative terminal of the battery and electrons (negatively charged) get attracted to the positive terminal of the battery. This results in the depletion layer to widen up. Now the PN junction acts as an insulator and will not allow any current to flow in the circuit. But at a condition, if the battery voltage is above a particular limit, which is called as the reverse bias breakdown voltage level. Electrons and the holes breakdown through the PN junction and cross over resulting in the current to flow through the circuit. This break down is called avalanche breakdown In this process the current flowing through the PN junction is very high and ultimately the PN junction gets damaged due to overheating caused by the excess flow of current. This is how a PN junction semiconductor works. ------- As you all know there are many technical video been uploaded on our YouTube channel https://www.youtube.com/user/TechTrixInfo you can also watch these video from our web site www.TechTrixInfo.com These are some of our famous tutorial video: How to drive n Operate a JCB BHL Machine: https://www.youtube.com/watch?v=d0QsBcyuQKw&list=TLxVT-8RVZwj6rt8TF6qQASojgB2HyFj6A How piston pump works: https://www.youtube.com/watch?v=BEpQFZ5BG8c Animation - How Clutch Works: https://www.youtube.com/watch?v=H7Iay0Ke_t4&list=TLEAR3w8CXdzQVx8Wk-RWxgIKniXTYNllp How fuel injection pump works: https://www.youtube.com/watch?v=HVIE36oIR1s&list=TLbG7_oGzfXfRpBh5Sa-6bA0OGexW_wY2T How Hydraulic Ram Works: https://www.youtube.com/watch?v=svdsbL4PLL4&list=TLsKtRNvm03sqKvd1AwOEbOsWZZezoXJ5z We are also having a drawing video tutorial channel: https://www.youtube.com/user/EthansHowToDaw Answer to all the below questions are available in this video: How pn junction diode works. How diode works, animation diode, animation pn junction, working of pn junction, how does a pn junction semiconductor works, what is avalanche breakdown, what is drift current, how drift current forms, what is space charge region, how space charge region forms, what is depletion layer, how depletion layer formed, how an electric field is formed in pn junction, what is forward bias, what is reverse bias, how forward bias occurs, how reverse bias occurs, what is diffusion current, how diffusion current is formed.
Views: 1029992 TechTrixInfo
Netting capital gains losses| Income Tax Course | Tax Cuts and Jobs Act 2017 | CPA Exam Regulation
 
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Net short-term capital gain is not eligible for any special tax rate. It is taxed at the same rate as the taxpayer’s other taxable income. Net long-term capital gain is eligible for one or more of four alternative tax rates: 0 percent, 15 percent, 20 percent, 25 percent, and 28 percent. The 25 percent and 28 percent rates are used only in unique circumstances. The net long-term capital gain components are referred to as the 0%/15%/20% gain, the 25% gain, and the 28% gain. The 25% gain is called the unrecaptured § 1250 gain and is related to gain from dis-position of § 1231 assets (discussed later in this chapter). Here, the discussion focuses only on how the 25% gain is taxed and not how it is determined. The 28% gain relates to collectibles and qualified small business stock (§ 1202, see discussion in Chapter 18). The definition of collectibles is discussed later in this section. In 2018, the 0% gain portion of the 0%/15%/20% gain applies to long-term capital gains that, when coupled with other forms of taxable income, do not exceed $77,200 for married taxpayers filing jointly, $51,700 for heads of household, and $38,600 for single taxpayers and married taxpayers filing separately. The 15% gain portion of the 0%/15%/20% gain applies to long-term capital gains that, when coupled with other forms of taxable income, exceed the 0% gain thresholds and do not exceed $479,000 for married taxpayers filing jointly, $452,400 for heads of household, $425,800 for single taxpayers, and $239,500 for married taxpayers filing separately. The 20% gain portion of the 0%/15%/20% gain applies to long-term capital gains that, when coupled with other forms of taxable income, exceed the 15% gain thresholds. My website: https://farhatlectures.com/ Facebook page: https://www.facebook.com/accountinglectures LinkedIn: https://goo.gl/Pp2ter Twitter: https://twitter.com/farhatlectures Email Contact: [email protected]
Working with regions (MVTec HALCON)
 
07:24
Regions are a very powerful tool when working with MVTec HALCON. In this video, we learn how to segment an image using the Gray Histogram tool. The resulting region is then processed with morphology to separate touching objects. Lastly, using the features of the regions, like for example the circularity, we cluster different objects in separate regions. You can download the finished example programs here: http://www.mvtec.com/news-press/videos/video/detail/working-with-regions-mvtec-halcon It includes a small exercise: Instead of using the region features, we want to use the gray value information of the image. Content 0:28 Segmentation: Separate background and foreground 0:48 Gray Histogram 2:26 Morphology: Process geometrical structures 3:28 Separate touching objects using morphology 4:22 Use region features to select certain regions In this video, HALCON 13.0.1 is used. http://www.mvtec.com/ http://www.halcon.com/
Views: 8320 mvtecsoftware
How to Identify a CPU/GPU Bottleneck
 
07:41
DOWNLOAD MSI AFTERBURNER HERE: https://gaming.msi.com/features/afterburner DOWNLOAD NZXT CAM SOFTWARE HERE: https://www.camwebapp.com/ Setting up OSD with Afterburner (TUTORIAL): https://www.msi.com/blog/setting-up-osd-with-msi-afterburner FACEBOOK: www.facebook.com/SalazarStudioYT TWITTER: @SalazarStudioYT INSTAGRAM: @SalazarStudioYT Subscribe to the channel! MUSIC: 'Break Away' by Foria DISCLOSURES: All Genius links are tied to our Amazon Associate account, from which we earn a small sales commission. Links containing a 'bit.ly' reference forwarding to Newegg are tied to our CJ account, from which we earn a small sales commission. All sponsored links and comments will contain the word "SPONSOR" or "AD." Any additional revenue stream will be disclosed with similar verbiage.
Views: 345613 Science Studio
Samadhi Movie, 2018 - Part 2 (It's Not What You Think)
 
01:10:27
Do you find our films valuable? Please consider becoming a patron and support us at http://www.patreon.com/awakentheworld. Patreon is a new system that we are trying out, or you can still make a one-time donation at http://www.paypal.me/samadhicenter. We have created a series of guided meditations and teachings if you are interested in realizing Samadhi. https://www.youtube.com/playlist?list=PL8qL2YhfbR-v6E078srKyef_CBAcdb0Xf A high quality blu-ray/DVD combo pack containing parts 1 and 2 (narration in English, French, German, Spanish, Hindi and Chinese) can be purchased on Amazon: https://www.amazon.com/Samadhi-Parts-Blu-ray-Combo-Pack/dp/B07KGMNPKV/ref=sr_1_4?ie=UTF8&qid=1545838833&sr=8-4&keywords=samadhi+movie The soundtrack is available on Amazon, iTunes, Spotify, Play Store and most streaming services. The iTunes link is here: https://itunes.apple.com/album/id1410561631?ls=1&app=itunes Samadhi Part 2 (It's not what you think) is the second installment of a series of films exploring Samadhi. You can purchase a high definition copy of the film for download to your computer here: http://www.innerworldsmovie.com/index.cfm?page=purchase This Youtube video has "community translations" turned on. To add or contribute to a translation, in the Youtube player, click on the "gear" icon, then "subtitles", then click "more" and then click "add translation". Or click here: http://www.youtube.com/timedtext_video?v=AQL6qcGqQ0Y&ref=share If you have any questions you can contact us at [email protected] We have new films, retreats and awakening initiatives coming available periodically and we would love to share with you. If you would like to receive occasional emails from us please subscribe to our newsletter at http://www.samadhi.ca. There are aspects in this film that rely on your understanding of concepts such as the primordial spiral, the logos, akasha, kundalini which can be found in the film "Inner Worlds Outer Worlds". The film can be watched for free at www.innerworldsmovie.com. While we greatly encourage you to freely share the links to the film, embed them and spread them freely, please do not edit it, claim it as your own and/or monetize it on your own Youtube channel. Thank you. Many people have sent us messages asking where they can practice meditation. Here are some resources: 1) Our own center, the Samadhi Center in Canada provides ongoing meditation retreats: http://www.samadhi.ca 2) Vipassana Meditation: www.dhamma.org 3) Zen Meditation: https://zmm.mro.org The soundtrack is available here: https://itunes.apple.com/album/id1410561631?ls=1&app=itunes #meditation #awakening #enlightenment
Views: 782496 AwakenTheWorldFilm
User Guide: 4 Defining Buy Signals
 
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There are as many ways to define a buy or sell signal as there are analytical methods. Because my method of analysis is derived largely through the study of bar-charts – which essentially measures the relationship between price and time – my entry and exit signals are therefore price and time dependent by closing a particular trading session above or below key, trend-defining indicators. The same logic also carries over to weekly and monthly bar charts. Therefore, End-of-day settlements above or below key levels largely determine those buy and sell signals expressed in my daily futures letters, end-of-week settlements above or below key levels for those expressed in my Weekly SPY report, and of course end-of-month settlements for those expressed in my Monthly ETF Sector Snapshot. And to complicate matters a bit, as it pertains to long-term indicators and formations that span many months or even years across a weekly bar chart, before considering it a reliable, actionable signal you need not only settle the week above or below a critical level, but a settlement price that’s outside a certain threshold of these indicators. In the world of technical analysis, sometimes close is too close. I’ll be addressing these longer-term signal thresholds in greater depth in the final video: managing slippage. But for right now, let me emphasize that the bulk of the buy and sell signals mentioned in my newsletter analysis are fairly clean cut. If or when it’s too close to call, you’ll know by reading about that in the newsletter commentary. Let’s assume for the sake of this demonstration you have no position, and because this market (the SP-500 SPDR ETF) clearly remains in the grips of a continued bull trend - you are looking for the next buy opportunity. If we zoom in to the more recent price activity (pause), you can see overhead, nearer term resistance on this daily chart represented by a four-week descending channel top. It held nicely on the first couple attempts, yet on the third day you can see the market penetrates the channel top on an intra-day basis. Mind you, this is intra-day activity, and the market has yet to close the day above the 161.47 channel top. During these moments there’s a heightened possibility for what I term “jumping the gun”, the common knee-jerk response to anticipating a certain buy or sell signal and then acting on that anticipated signal before it’s fully materialized. This is where patience is certainly a virtue, for your understandably anxious at the possibility the market will continue moving higher throughout the day, denying you a more optimal price entry. Now I'm not about to tell you to not jump the gun, but if you do so it should be, in my opinion, based upon other valid information, whether it be technical or fundamental. For instance, you could construct the same formation on an hourly bar chart, which might provide an intraday buy signal following an hourly settlement above the same formation, but keep in mind that the shorter-term your data, the less reliable it is in predicting longer-term directional moves. Also, if you do jump the gun, let it be supported by a relatively conservative stop loss, for it’s quite common for any market to penetrate a key resistance level on an intra-day basis, only to fall back in the final hour or two of trade to settle the day comfortably below it, thereby maintaining a bearish trend dynamic for the days and even weeks ahead. However, on this particular day the SPY did settle above the 161.74 channel top, essentially triggering several more weeks of follow-through buying activity, and with that a continuation of a longer-term bull move. Within all of my advisory letters, whether the many daily futures newsletters, the Weekly SPY Report, or the Monthly ETF Sector Snapshot, you'll notice that within the commentary the buy and sell signals are indicated by settlements above and below key levels. The process of determining actionable buy and sell signals, especially longer-term signals, often involves grappling with the issue of “slippage”, which is the subject I address in the next and final user guide video: managing slippage.
Views: 112 Cary Artac
The Alchemy of Transformation - Matt Kahn
 
01:42:39
Order Matt’s new book, “Everything is Here to Help You” at: http://mattkahn.org/everything-is-here-to-help-you/ BIO: For the past 13 years, highly-attuned empathic healer and best-selling author, Matt Kahn, has been astounding audiences by revolutionizing all aspects of the spiritual journey through his profoundly healing teachings. Focusing his message on offering the most loving approach to each stage of exploration, Matt has carved a brand-new path for those yearning for true liberation, emotional freedom, and to embody their soul's full potential. ~~~~~~~~~~~~~~~~~~~~~~ Thank you to our dear friend Steve Gorn for the use of his beautiful bansuri flute music from the album, Illumination. It can be purchased here: http://stevegorn.com/recordings-for-sale/
Views: 159767 Matt Kahn All For Love
The Story of Rainbow Six Siege
 
17:32
Every game wants to be the next big thing. Worse, they want it to be the next big thing right from launch. But unlike the massive successes and instant flops of recent years, an unlikely Ubisoft game has steadily built up a fanbase. They did it by reinventing what the franchise meant, while simultaneously committing to a post-release support structure that would keep the game relevant for years to come. In the process, they’ve built not only a devoted player base, but a growing esports scene as well. This is the story of Rainbow Six Siege. Written & Narrated by Josh Bury (@ThrownGauntlet) Edited by Matt Massey Additional Graphics by Diego Bernal Gomez Courtesies/Video Sources: https://pastebin.com/7Xx5EPMJ Music used under license from Associated Production Music LLC (”APM”). Check out theScore esports on Android and iOS: Android: http://thesco.re/esportsAndroidYT iOS: http://thesco.re/esportsiOSYT Follow us on Twitter: http://twitter.com/thescoreesports Follow us on Facebook: https://www.facebook.com/theScoreesports Follow us on Instagram: https://instagram.com/theScoreesports Follow us on Snapchat: theScoreesports
Views: 721769 theScore esports
Advanced Azure Cosmos DB: Design patterns tips and tricks - BRK4019
 
01:08:27
Attend this session to learn details about some of the toughest and largest deployments utilizing Cosmos DB. This session will cover all the tips and tricks for performance optimization, bulk loading, server-side programmability, handling hot partition keys, debugging, and practical lessons for scenarios like time series modelling, migration from other platforms, etc. Learn more: https://azure.com/cosmosdb
Views: 2967 Microsoft Ignite
What Is Method Of Acquisition?
 
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Aspx url? Q webcache. Difference between acquisition method and purchase investopediaacquisition investopediathe differences the & for business combinations under information system acquiring systems services valuation methods accountingtoolslau, chapter 8 astate. Acquisition investopedia. The form of payment generally preferred by the shareholders acquiree is cash. Firm orders that are determined by name specifically. If the corridor has been abandoned, you can use a variety of methods to acquire principles for both acquisition method and purchase are same. Practitioners are often unaware of feb 21, 2017 in advertising and marketing, customer acquisition is the term for process bringing new customers to a particular brand, product, revised 1 15 07. Understanding the under ifrs 3, a business combination must be accounted for using technique called acquisition method. What are the differences between acquisition method and methods of acquisitionrails to trails conservancy. A framework is presented which assists requirements engineers to choose methods for acquisition. Simplified acquisition methods. In the acquisition method, there are two methods of accounting and merger. To state the authority, responsibility, and duties of vice president for information technology with regard to acquisitions computer What are differences between acquisition method methods acquisitionrails trails conservancy. For example the purchase method and acquisition are both accounting practices intended to help provide an accurate record of this process. Customer acquisition methods and strategiesa005 of computer hardware & software. Acquisitions library acquisitions is the department of a responsible for selection and purchase there are eight types acquisition methods followed by libraries 1. Accounting for mergers & acquisitions research paper starter acre selecting methods requirements acquisition. The acquisition method differs in that it methods of acquisitionlaser ranging works on the principle surface object reflects laser light back towards a receiver if line is unused but still legally active, you might consider railbanking. The acquisition has to be valued at fair value definition of 'purchase acquisition' an accounting method used in mergers and acquisitions with which the purchasing company treats target firm as investment, adding target's assets its own market past, a called accounting' was business combination accounting, but standard changes made only corporate action buys most, if not all, company's ownership stakes order assume control. It is particularly understand the concept of real property; Examine methods acquisition Understand different interests in property, including ownership (a) except as provided under unpriced purchase order method (see simplified acquisitions exceeding micro threshold that are for other two most common types accounting mergers and also described, pooling method, which was traditionally used synopsis. This views the transact
Views: 53 Bet My Bet
2016 Lecture 06 Maps of Meaning: Part I: The primordial narrative
 
01:37:57
Our experience takes narrative form, under the influence of biological, cultural and uniquely individual forces. This is partly because our minds are based in social cognition. Experience manifests itself comprehensibly as the unknown itself, the great dragon of chaos; the unknown as we experience it, the great mother; culture, the great father, and the individual, the center of conscious being, Each of these categories manifests itself in action. Each has a positive and negative element. --- SUPPORT THIS CHANNEL --- Direct Support: https://www.jordanbpeterson.com/donate Merchandise: https://teespring.com/stores/jordanbpeterson --- BOOKS --- 12 Rules for Life: An Antidote to Chaos: https://jordanbpeterson.com/12-rules-for-life/ Maps of Meaning: The Architecture of Belief: https://jordanbpeterson.com/maps-of-meaning/ --- LINKS --- Website: https://jordanbpeterson.com/ 12 Rules for Life Tour: https://jordanbpeterson.com/events/ Blog: https://jordanbpeterson.com/blog/ Podcast: https://jordanbpeterson.com/podcast/ Reading List: https://jordanbpeterson.com/great-books/ Twitter: https://twitter.com/jordanbpeterson Instagram: https://www.instagram.com/jordan.b.peterson/ Facebook: https://www.facebook.com/drjordanpeterson --- PRODUCTS --- Self Authoring Suite: https://selfauthoring.com/ Understand Myself personality test: https://understandmyself.com/ Merchandise: https://teespring.com/stores/jordanbpeterson
Views: 102422 Jordan B Peterson
2016 Lecture 04 Maps of Meaning: Anomaly
 
01:30:33
Much of the complexity of the world is hidden from us while we pursue our focal, goal-directed actions. However, when our plans go wrong, and we don't get what we want, what we have ignored resurfaces. If the disruption is severe enough, major parts of our identity have to be reconfigured. This can be difficult to the point of trauma. --- SUPPORT THIS CHANNEL --- Direct Support: https://www.jordanbpeterson.com/donate Merchandise: https://teespring.com/stores/jordanbpeterson --- BOOKS --- 12 Rules for Life: An Antidote to Chaos: https://jordanbpeterson.com/12-rules-for-life/ Maps of Meaning: The Architecture of Belief: https://jordanbpeterson.com/maps-of-meaning/ --- LINKS --- Website: https://jordanbpeterson.com/ 12 Rules for Life Tour: https://jordanbpeterson.com/events/ Blog: https://jordanbpeterson.com/blog/ Podcast: https://jordanbpeterson.com/podcast/ Reading List: https://jordanbpeterson.com/great-books/ Twitter: https://twitter.com/jordanbpeterson Instagram: https://www.instagram.com/jordan.b.peterson/ Facebook: https://www.facebook.com/drjordanpeterson --- PRODUCTS --- Self Authoring Suite: https://selfauthoring.com/ Understand Myself personality test: https://understandmyself.com/ Merchandise: https://teespring.com/stores/jordanbpeterson
Views: 142809 Jordan B Peterson
How Does The Richter Scale Work?
 
04:57
Nepal has been hit by two huge earthquakes, a 7.8 and a 7.3 on the Richter Scale. What are the different ways seismologists measure earthquakes and what do these ratings mean? Read More: Earthquake Facts and Statistics http://earthquake.usgs.gov/earthquakes/eqarchives/year/eqstats.php How Earthquakes Work http://science.howstuffworks.com/nature/natural-disasters/earthquake6.htm The Modified Mercalli Intensity Scale http://earthquake.usgs.gov/learn/topics/mercalli.php "The effect of an earthquake on the Earth's surface is called the intensity. The intensity scale consists of a series of certain key responses such as people awakening, movement of furniture, damage to chimneys, and finally - total destruction." Magnitude VS Intensity http://pnsn.org/outreach/about-earthquakes/magnitude-intensity "Perhaps no seismic subject is as irksome to seismologists as discussions of earthquake size. There often seems to be no end of confusion, misunderstanding, and over-interpretation of what are really pretty crude metrics." ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube http://testtube.com/dnews Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel DNews on Twitter http://twitter.com/dnews Trace Dominguez on Twitter https://twitter.com/tracedominguez Julia Wilde on Twitter https://twitter.com/julia_sci DNews on Facebook https://facebook.com/DiscoveryNews DNews on Google+ http://gplus.to/dnews Discovery News http://discoverynews.com Download the TestTube App: http://testu.be/1ndmmMq
Views: 249387 Seeker
Neuron graded potential description | Nervous system physiology | NCLEX-RN | Khan Academy
 
09:48
Created by Matthew Barry Jensen. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/nervous-system-phy/rn-neuron-membrane-potentials/v/neuron-graded-potential-mechanism?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn Missed the previous lesson? https://www.khanacademy.org/test-prep/nclex-rn/nervous-system-phy/rn-neuron-membrane-potentials/v/neuron-resting-potential-mechanism?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn NCLEX-RN on Khan Academy: A collection of questions from content covered on the NCLEX-RN. These questions are available under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License (available at http://creativecommons.org/licenses/by-nc-sa/3.0/us/). About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s NCLEX-RN channel: https://www.youtube.com/channel/UCDx5cTeADCvKWgF9x_Qjz3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 129713 khanacademymedicine
The Expert Searcher and Threshold Concepts
 
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Podcast Links: http://amazon.sjsu.edu/slisPod/colloquia/fa13/collTuckerFA13.mp3 http://amazon.sjsu.edu/slisPod/colloquia/fa13/collTuckerFA13.mp4 Abstract: Dr. Virginia Tucker will present highlights from her research into the transformative learning experiences and critical concepts—threshold concepts—involved as search expertise is acquired. She will discuss implications for the evolving role of the professional searcher, models of the search experience, search interface design, and how we teach advanced search methods and concepts. Biography: Dr. Virginia Tucker is a full-time lecturer at the San José State University School of Library and Information Science and works half-time as a county law librarian in Washington state. She received the SLIS Outstanding Lecturer Award in 2011. Tucker's career in information services began as head librarian at the Stanford University Physics Library. She was recruited by Dialog/Thomson (now ProQuest) to their sci-tech client services and training group and became the manager of client training programs for the company worldwide. Her intense engagement with students and other instructors during that time gave her a deep understanding of how searchers perceive (and misperceive) database structures, search protocols and concepts, and techniques for searching efficiently and cost-effectively. She has developed and written many instructional materials, multimedia tutorials, and self-study user guides. After years working directly with clients, Tucker moved behind the scenes to be an information architect and interface specialist for web-based search products. Her key professional passion is teaching and researching how people learn to search for and find information. As a public law librarian, she is passionate about access to justice and legal information.
Neuromuscular junction, motor end-plate | NCLEX-RN | Khan Academy
 
09:00
How do neurons talk directly to muscle cells? Learn about how a neuronal message is translated into a muscular action at the neuromuscular junction. By Raja Narayan. Created by Raja Narayan. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-muscular-system/rn-the-muscular-system/v/type-1-and-2-muscle-fibers?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn Missed the previous lesson? https://www.khanacademy.org/test-prep/nclex-rn/rn-muscular-system/rn-the-muscular-system/v/motor-neurons?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn NCLEX-RN on Khan Academy: A collection of questions from content covered on the NCLEX-RN. These questions are available under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License (available at http://creativecommons.org/licenses/by-nc-sa/3.0/us/). About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s NCLEX-RN channel: https://www.youtube.com/channel/UCDx5cTeADCvKWgF9x_Qjz3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 332892 khanacademymedicine
K-means clustering: how it works
 
07:35
Full lecture: http://bit.ly/K-means The K-means algorithm starts by placing K points (centroids) at random locations in space. We then perform the following steps iteratively: (1) for each instance, we assign it to a cluster with the nearest centroid, and (2) we move each centroid to the mean of the instances assigned to it. The algorithm continues until no instances change cluster membership.
Views: 510476 Victor Lavrenko
Chapter 02 Integrated Pest Management
 
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A presentation of Chapter 2 Integrated Pest Management of the Grower Pesticide Safety Course.
What Is Lead Scoring?
 
01:35
How do you know which of your inbound leads are most likely to convert into paying customers? Meet lead scoring. Lead scoring is the process of assigning a value to each lead so your sales team can prioritize outreach. Learn more: https://hubs.ly/H0bBdSZ0 With inbound marketing, you're able to attract a high volume of leads. The challenge then becomes: Which of those leads are most likely to convert into paying customers? The thing is, not all leads are created equal. Only 10% typically convert into customers. So you need a scalable way to get in touch with the right prospects -- fast. Meet lead scoring. Lead scoring is the process of assigning a value to each lead so your sales team can prioritize outreach. Here’s how it works: First, you’ll need to determine the lead-to-customer conversion rate for all your leads. This is your benchmark. Then, examine different attributes to determine what makes someone more likely to become a customer. This includes things like location, business size, or behavioral data like how many times a prospect views your pricing page. Finally, compare the close rate of customers with each attribute. The higher the close rate, the more points you award. You probably get the idea: Lead scoring is complicated, and it can be based on inaccurate assumptions. Thankfully, marketing and sales tools automate the process using predictive models. And, with the help of machine learning and artificial intelligence, software is getting better at finding patterns and recalibrating based on the most recent prospect data. With HubSpot, you can spend less time guessing and more time selling. Learn more about predictive lead scoring at hubspot.com.
Views: 37605 HubSpot
9. Verification and Validation
 
01:37:49
MIT 16.842 Fundamentals of Systems Engineering, Fall 2015 View the complete course: http://ocw.mit.edu/16-842F15 Instructor: Olivier de Weck The focus of this lecture is design verification and validation. Other concepts including design tesing and technical risk management and flight readiness review are also introduced. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 8796 MIT OpenCourseWare
marketing 101, understanding marketing basics, and fundamentals
 
01:30:33
marketing 101, understanding marketing basics, and fundamentals. marketing refers to the activities of a company associated with buying and selling a product or service. it includes advertising, selling and delivering products to people. people who work in marketing departments of companies try to get the attention of target audiences by using slogans, packaging design, celebrity endorsements and general media exposure.
Yelawolf - Johnny Cash (Official Music Video)
 
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Get Yelawolf's "Love Story" - http://smarturl.it/YelaLoveStory Sign up for updates: http://smarturl.it/Yelawolf.News Music video by Yelawolf performing Johnny Cash. (C) 2015 Interscope Records http://www.vevo.com/watch/USUV71400880 Best of Yelawolf: https://goo.gl/vy7NZQ Subscribe here: https://goo.gl/ynkVDL #Yelawolf #JohnnyCash #Vevo #HipHop #OfficialMusicVideo
Views: 11212446 YelawolfVEVO
Navigating a Virtual World Using Dynamic Programming
 
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Let's teach our AI how to get from point A to point B of a Frozen Lake environment in the most efficient way possible using dynamic programming. This is considered reinforcement learning and we'll trying two popular techniques (policy iteration and value iteration). We'll use OpenAI's Gym environment and pure python to do this. Code for this video: https://github.com/llSourcell/navigating_a_virtual_world_with_dynamic_programming Please Subscribe! And like. And comment. That's what keeps me going. Want more inspiration & education? Connect with me: Twitter: https://twitter.com/sirajraval Facebook: https://www.facebook.com/sirajology More learning resources: https://ocw.mit.edu/courses/aeronautics-and-astronautics/16-410-principles-of-autonomy-and-decision-making-fall-2010/lecture-notes/MIT16_410F10_lec23.pdf http://uhaweb.hartford.edu/compsci/ccli/projects/QLearning.pdf https://medium.com/@m.alzantot/deep-reinforcement-learning-demysitifed-episode-2-policy-iteration-value-iteration-and-q-978f9e89ddaa https://www.cs.cmu.edu/afs/cs/project/jair/pub/volume4/kaelbling96a-html/node19.html http://cs.stanford.edu/people/karpathy/reinforcejs/gridworld_dp.html https://www.quora.com/How-is-policy-iteration-different-from-value-iteration http://www0.cs.ucl.ac.uk/staff/d.silver/web/Teaching_files/DP.pdf Join us in the Wizards Slack channel: http://wizards.herokuapp.com/ And please support me on Patreon: https://www.patreon.com/user?u=3191693 Instagram: https://www.instagram.com/sirajraval/ Instagram: https://www.instagram.com/sirajraval/ Signup for my newsletter for exciting updates in the field of AI: https://goo.gl/FZzJ5w Hit the Join button above to sign up to become a member of my channel for access to exclusive content!
Views: 24312 Siraj Raval
Create a Risk Assessment Chart
 
16:53
Check out my Blog: http://exceltraining101.blogspot.com This video covers how to create a colored (green-yellow-red) risk assessment chart. This is used in project management to compare risk to probability for various task or projects to help aid in decision making. Feel free to provide a comment or share it with a friend! #exceltips #exceltipsandtricks #exceltutorial #doughexcel
Views: 211729 Doug H
IPPCR 2016: Data Management & Case Report Form Development in Clinical Trials
 
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IPPCR 2016: Data Management & Case Report Form Development in Clinical Trials Air date: Tuesday, February 02, 2016, 5:00:00 PM Category: IPPCR Runtime: 00:59:51 Description: The Introduction to the Principles and Practice of Clinical Research (IPPCR) is a course to train participants on how to effectively conduct clinical research. The course focuses on the spectrum of clinical research and the research process by highlighting epidemiologic methods, study design, protocol preparation, patient monitoring, quality assurance, and Food and Drug Administration (FDA) issues. For more information go to http://clinicalcenter.nih.gov/training/training/ippcr1.html Author: Marge Good, RN, MPH, OCN, NCI, NIH Permanent link: http://videocast.nih.gov/launch.asp?19463
Views: 6296 nihvcast
047 Action Potentials and Contraction in Cardiac Muscle Cells
 
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http://www.interactive-biology.com - Making Biology Fun In this episode I show how the Action potential is generated in cardiac muscle cells and how this results in Contraction of the Heart. When the action potential happens, calcium ions are released from the Sarcoplasmic reticulum, causing the plateau. Calcium ions then trigger muscle contraction. http://www.interactive-biology.com
Views: 239920 Interactive Biology
📡 Siglent SSA3032X Spectrum Analyzer Review & Experiments
 
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Afroman reviews Siglent's SSA3000X series spectrum analyzer and all the options. There is some RF information for beginners and usage experiments are also performed. Firmware version 1.2.8.2. ==========TABLE OF CONTENTS======== 0:00 Intro 0:33 Unboxing and discussion of inputs 1:24 Screen 1:59 Build quality, fan noise, user interface 5:35 AM and FM demodulation 6:18 Average noise measurements 9:11 Phase noise 9:46 Spurious readings and possible shielding issue 12:25 Amplitude accuracy 12:40 Tracking generator evaluation and experiments 15:35 Advanced measurement kit option 16:13 EasySpectrum software and EMI measurement option 17:47 Introduction to measuring antenna performance 19:30 Reflection measurement software and hardware experiment 21:35 Reflection bridge hardware directivity discussion 22:36 Limitations of directivity experiment 24:18 Final judgement and conclusion Blow your mind at http://www.afrotechmods.com Twitter: http://twitter.com/Afrotechmods Facebook: http://www.facebook.com/Afrotechmods/
Views: 49691 Afrotechmods
Activation energy
 
01:17
Animation on activation energies at exothermic and endothermic reactions.
Views: 226847 kosasihiskandarsjah
Brainstormer 8: Rheobase & Chronaxie
 
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http://www.regionalfortrainees.com Subscribe to our newsletter at: http://eepurl.com/wP0UD This week in Brainstormer 8, we discuss the concepts of strength duration curve, specifically the Rheobase & Chronaxie. Find more exciting stuff at: http://www.regionalfortrainees.com Follow me at: Facebook: http://www.facebook.com/pages/Regional-for-trainees/151392185020993?ref=hl Twitter: https://twitter.com/hermansehmbi Linkedin: http://www.linkedin.com/pub/herman-sehmbi/51/991/243 Write to me at: [email protected]
Views: 25177 Herman Sehmbi
23. Martingales (Plain, Sub, and Super)
 
01:22:40
MIT 6.262 Discrete Stochastic Processes, Spring 2011 View the complete course: http://ocw.mit.edu/6-262S11 Instructor: Robert Gallager License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 27759 MIT OpenCourseWare