The American Civil War is one of the deadliest in US History, and let's just get this out of the way: it was about slavery. In the more than 150 years since the end of the Civil War, there have been many attempts to litigate the reasons for the war, but the reality is that the root of the division was slavery. As such, Black Americans experience in that war is particularly interesting. Today, we'll learn about how Black people fought and participated in the war, the Emancipation Proclamation, and lots more.

Michael Flierl (The Ohio State University) presents 'The Black Box Problem and Explainable AI (XAI)' during the Short Talks & Demos session at the Fantastic Futures ai4LAM 2023 annual conference. This item belongs to: movies/fantastic-futures-annual-international-conference-2023-ai-for-libraries-archives-and-museums-02.

This item has files of the following types: Archive BitTorrent, Item Tile, MP3, MPEG4, Metadata, PNG, Thumbnail, h.264 720P, h.264 IA

We’ve covered a lot of incredible stuff, but this week we’re talking about the weirdest objects in space: BLACK HOLES. Stellar-mass black holes form when a very massive star dies, and its core collapses. The core has to be more than about 2.8 times the Sun’s mass to form a black hole. Black holes come in different sizes, but for all of them, the escape velocity is greater than the speed of light, so nothing can escape, not matter or light. They don’t wander the Universe gobbling everything down around them; their gravity is only really intense very close to them. Tides near a stellar mass black hole will spaghettify you, and time slows down when you get near a black hole — not that this helps much if you’re falling in.

Chapters:
Introduction
How Black Holes Are Formed
Misconceptions About Black Holes
Stellar Mass Black Holes
Spaghettification
Black Holes Warp Space-Time
Review

"The Big Sink"

In this episode, John and Katie take a break from talking through the universe's timeline to focus on a mystery of our cosmos: black holes.

What is a black hole? How is it formed? And where are they?

In this video, learn from Space Science specialist Douglas Equils about one of the most massive and mysterious things in our universe, black holes.

In which John Green kicks off Crash Course US History! Why, you may ask, are we covering US History, and not more World History, or the history of some other country, or the very specific history of your home region? Well, the reasons are many. But, like it or not, the United States has probably meddled in your country to some degree in the last 236 years or so, and that means US History is relevant all over the world. In episode 1, John talks about the Native Americans who lived in what is now the US prior to European contact. This is a history class, not archaeology, so we're mainly going to cover written history. That means we start with the first sustained European settlement in North America, and that means the Spanish. The Spanish have a long history with the natives of the Americas, and not all of it was positive. The Spanish were definitely not peaceful colonizers, but what colonizers are peaceful? Colonization pretty much always results in an antagonistic relationship with the locals. John teaches you about early Spanish explorers, settlements, and what happened when they didn't get along with the indigenous people. The story of their rocky relations has been called the Black Legend. Which is not a positive legend.

Chapters:
Introduction to Crash Course US History
Native North Americans
Were Native North Americans 'Primitive?'
Native North American Populations
Life in Pre-Columbian America
Class and Society in Native American Tribes
Spanish Colonization in North America
Mystery Document
The Problem with the Black Legend
Credits

In the final episode of Crash Course Black American History, Clint Smith teaches you about the Black Lives Matter movement. We'll discuss some of the major events that contributed to the rise of BLM, including the deaths of Trayvon Martin, Michael Brown, Eric Garner, and George Floyd, and the way that social media was utilized by Black organizers to gain support for the movement.

Many organizations have made it their mission to expand the rights of Black Americans. The NAACP and the Urban League are examples of influential organizations with long histories. But a long history or extensive membership isn't always necessary to have an impact. Today, we'll learn about the Black Panthers. They were a relatively small, relatively short-lived political party that had an outsized impact on US history.

This audio will take you through the life of a one Black, nonbinary, queer, disabled person. You will be exposed to the mundane everyday tasks associated with a bodymind that is mine. Have you ever woken up and forgot to put on your ears?! I hope that you gain a little perspective outside of the idea that Blackness begins at struggle, that disability is always sad, and queerness is unwanted. Each of these facets of my identity is infused in all of the others. Come with me into a world of the ordinary joys.

In the late 19th and early 20th centuries, Black American Women were struggling with both racism and misogyny as they fought for their rights. Black Women formed clubs and organized to make sure civil and political rights were extended to ALL Black people, not just Black men. These clubs were grass-roots organizations of middle-class women who were often only one generation removed from slavery. Today we'll learn about the origins of these clubs and some of the notable women who drove this movement.

A short introduction to blogs - how they work and why they matter.

Now that we've talked about your blood vessels, we're going to zoom in a little closer and talk about your blood itself. We'll start by outlining the basic components of blood -- including erythrocytes, leukocytes, platelets, and plasma -- as well as the basic process of hemostasis that stops bleeding, and how antigens are responsible for the blood type that you have. By the end of this episode, you should be totally prepared for your next blood drive.

Chapters:
Introduction: Let's Talk Blood
How Blood Donation Works
Blood Components: Erythrocytes, Leukocytes, Platelets, and Plasma
Plasma - Electrolytes
Plasma Proteins
Hemostasis: How Bleeding Works
Antigens & Blood Types
Review
Credits

It's time to start talking about some of the terrible things you can do to your own body, like blood doping. We'll start by explaining the structure and function of your erythrocytes, and of hemoglobin, which they use to carry oxygen. We'll follow the formation and life cycle of a red blood cell, including how its levels are regulated by EPO and its signaling molecules. We'll wrap up by looking at how blood doping works and how it is truly a recipe for disaster.

Chapters:
Introduction: Blood is Powerful Stuff
Form and Function of Erythrocytes (Red Blood Cells)
Hemoglobin
Formation of a Red Blood Cell: Hematopoiesis
How Erythropoietin (EPO) Regulates Blood Oxygen Levels
How Red Blood Cells Die
Don't Dope Your Blood!
Review
Credits

The purpose of this lesson is to teach students about blood and its components while instilling an appreciation of its importance for survival. The lesson takes a step-by-step approach to determining the recipe for blood while introducing students to important laboratory techniques like centrifugation and microscopy, as well as some diseases of cell types found in blood. It also highlights the importance of donating blood by explaining basic physiological concepts and the blood donation procedure.

In this video segment, adapted from NOVA, Dr. Judah Folkman uses the scientific method to discover how cancer cells induce the formation of new blood vessels, which in turn nourish those cancer cells.

Now that we've discussed blood, we're beginning our look at how it gets around your body. Today Hank explains your blood vessels and their basic three-layer structure of your blood vessels. We're also going over how those structures differ slightly in different types of vessels. We will also follow the flow of blood from your heart to the capillaries in your right thumb, and all the way back to your heart again.

Chapters:
Introduction: The Circulatory System
Blood Vessel Structure: Tunica Intima, Tunica Media, Tunica Externa
Types of Blood Vessels
Capillaries Structure & Function
How Blood Flows From Capillaries to the Heart
Review
Credits

And now we return to blood vessels. In this episode, we start discussing what blood pressure is, how it can become "high", and what that means for our health. One of the more interesting points is that your body has ways of dealing with high blood pressure, but they're not ways we want our bodies to operate on a full-time basis. And why can't we butter our bacon? WHY!?!?!

Chapters:
Introduction: High Blood Pressure
Cardiac Output - How Blood Flows
Blood Pressure & Resistance
Blood Flow Formula
Short Term Blood Pressure Regulation
Long Term Blood Pressure Regulation
Chronic High Blood Pressure
Review
Credits

Today, we’re going to talk about board games, but instead of trying to trace their histories, which we’ve already covered a bit of in ep2 on ancient games, we’re going to look really closely at just two board games - Monopoly and The Settlers of Catan. These two games have been played by millions, and we’ll talk about why they’re so popular (and controversial), but more importantly these two games have helped define two approaches to board game design: the American style board game and the European style board game. Now these two different “styles” of board games are mostly just over-generalizations about board game mechanics and there’s a ton of overlap, but with the recent resurgence in board game popularity they help us more clearly define two discrete time periods in board game popularity and discuss how these approaches have been defined by the times.

In this episode of Crash Course Psychology, Hank talks about how we learn by observation... and how that can mean beating up an inanimate clown named Bobo.

Chapters:
Introduction: The Bobo Doll Experiment
Social Cognitive Learning
Limitations of Classical & Operant Conditioning
Learning Associations
Learning & Cognition
Latent Learning
Observational Learning, Modeling, & Imitation
Reward Pathways & Mirror Neurons
Observational Social Learning
Review & Credits
Credits