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2 vistas · 7 años hace

Hank wraps up the Crash Course on ecology by taking a look at the growing fields of conservation biology and restoration ecology, which use all the kung fu moves we've learned about in the past eleven weeks and apply them to protecting ecosystems and to cleaning up the messes that we've already made.

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Table of Contents
1) Types of Diversity 3:00
2) Conservation Biology 4:12
A) Small Population Conservation 4:26
B) Declining Population Conservation 5:50
3) Restoration Ecology 7:06
A) Structural Restoration 7:30
B) Bioremediation 7:48
C) Biological Augmentation 8:03


References and image licenses for this episode can be found in the Google document here: http://dft.ba/-3DIH Support CrashCourse on Subbable: http://subbable.com/crashcourse

admin
2 vistas · 7 años hace

We've been talking about the unavoidables recently. Last time, we covered Death. This time, it's taxes. So, what are taxes? Why do we pay taxes? What is all that tax money used for? This week, Adriene is going to cover all that and more. We'll talk about types of taxes, progressive and regressive taxes, tax brackets, and we'll even get into a few historical scenarios where bad tax policy led to revolutions.

Crash Course is 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, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks

--

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admin
2 vistas · 7 años hace

If being alive on Earth were a contest, humans would win it hands down. We're like the Michael Phelps of being alive, but with 250,000 times more gold medals. Today Hank is here to tell us the specifics of why and how human population growth has happened over the past hundred and fifty years or so, and how those specifics relate to ecology.


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Table of Contents
1) R vs. K Selection Theory 01:41:1
2) Causes of Exponential Human Growth 03:24
3) Human Carrying Capacity 03:30:2
4) Ecological Footprints 06:40:1
5) Causes for Decline in Human Growth Rate 08:10:1 Support CrashCourse on Subbable: http://subbable.com/crashcourse

admin
2 vistas · 7 años hace

Next stop on our tour of engineering’s major fields: electrical engineering. In this episode we’ll explore the history of telecommunications, electric power and lighting, and computers. We’ll introduce topics like magnetism, electrical conduction, telegraphy, lighting, and computers.

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***

RESOURCES:
https://www.britannica.com/bio....graphy/William-Gilbe
http://www.bbc.co.uk/history/h....istoric_figures/gilb
http://www.sparkmuseum.com/BOOK_GRAY.HTM
http://people.seas.harvard.edu..../~jones/es154/lectur
https://www.britannica.com/biography/Claude-Chappe
http://people.seas.harvard.edu..../~jones/cscie129/pap
https://www.britannica.com/bio....graphy/William-Fothe
http://ethw.org/William_Fothergill_Cooke
https://www.telegraph.co.uk/te....chnology/connecting-
http://www.history.com/this-da....y-in-history/first-t
https://www.britannica.com/bio....graphy/Samuel-F-B-Mo
https://www.britannica.com/bio....graphy/Alexander-Gra
https://www.britannica.com/bio....graphy/Heinrich-Hert
https://www.livescience.com/45....641-science-of-world
https://definitions.uslegal.co....m/r/radio-act-of-191
https://www.britannica.com/bio....graphy/Sir-Humphry-D
https://www.britannica.com/bio....graphy/Zenobe-Theoph
http://www.history.com/topics/....inventions/thomas-ed
http://www.history.com/news/as....k-history/what-was-t
http://www.computerhistory.org..../fellowawards/hall/m
http://www.pbs.org/transistor/....album1/addlbios/hoff
http://www.intel4004.com/
https://www.wired.com/2009/12/....1223shockley-bardeen
https://www.history.com/topics..../inventions/inventio

***

Crash Course is 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, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, D.A. Noe, Shawn Arnold, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft
--

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admin
2 vistas · 7 años hace

This week, Stan Muller launches the Crash Course Intellectual Property mini-series. So, what is intellectual property, and why are we teaching it? Well, intellectual property is about ideas and their ownership, and it's basically about the rights of creators to make money from their work. Intellectual property is so pervasive in today's world, we thought you ought to know a little bit about it. We're going to discuss the three major elements of IP: Copyright, Patents, and Trademarks.

ALSO, A DISCLAIMER:
he views expressed in this video do not necessarily reflect those of the United States Copyright Office, the Library of Congress, or the United States Government.
The information in this video is distributed on "As Is" basis, without warranty. While precaution has been taken in the preparation of the video, the author shall not have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by any information contained in the work.
This video is intended for educational purposes only and is not intended to be, nor should it be construed as, legal advice. Intellectual property law is notoriously fact specific, and this video (or any other single resource) cannot substitute for expert guidance from qualified legal counsel. To obtain legal guidance relevant to your particular circumstances, you should consult a qualified lawyer properly licensed in your jurisdiction. You can contact your local bar association for assistance in finding such a lawyer in your area.

The Magic 8 Ball is a registered Trademark of Mattel

Citation 1: Brand, Stewart. Quote from speech given at first Hackers' Conference, 1984
Citation 2: Plato, Phaedrus. 390 BC p. 157

Crash Course is now on Patreon! You can support us directly (and have your contributions matched by Patreon through April 30th!) 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:

Suzanne, Dustin & Owen Mets, Amy Fuller, Simon Francis Max Bild-Enkin, Ines Krueger, King of Conquerors Gareth Mok, Chris Ronderos, Gabriella Mayer, jeicorsair, Tokyo Coquette Boutique,
Konradical the nonradical


TO: Everyone
FROM: Bob

You CAN'T be 'Based off' of anything! BASED ON!

TO: the world
FROM: denial

Nou Ani Anquietas. Hic Qua Videum.

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admin
2 vistas · 7 años hace

Take the 2017 PBS Digital Studios Survey: http://surveymonkey.com/r/pbsds2017. Today we’re going to create memory! Using the basic logic gates we discussed in episode 3 we can build a circuit that stores a single bit of information, and then through some clever scaling (and of course many new levels of abstraction) we’ll show you how we can construct the modern random-access memory, or RAM, found in our computers today. RAM is the working memory of a computer. It holds the information that is being executed by the computer and as such is a crucial component for a computer to operate. Next week we’ll use this RAM, and the ALU we made last episode, to help us construct our CPU - the heart of a computer.

*CORRECTION*

In our 16x16 Latch Matrix graphic, we inadvertently left off the horizontal row access line above the top row of latches. As a result, the highlighted line for the row at address 12 should actually be one line higher.


Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

The Latest from PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

We’ve got merch!
https://store.dftba.com/collections/crashcourse


Want to know more about Carrie Anne?
https://about.me/carrieannephilbin

Want to find Crash Course elsewhere on the internet?
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CC Kids: http://www.youtube.com/crashcoursekids

Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashC...
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Support Crash Course on Patreon: http://patreon.com/crashcourse

CC Kids: http://www.youtube.com/crashcoursekids

admin
2 vistas · 7 años hace

We've joined with Evelyn From the Internets to bring you the first half of our series on Business. Sponsored by Google, this first series will have Evelyn sitting down and going through Soft Skills. She'll be talking about Trust, Resumes, Conflict Resolution, Interviewing, and much, much more. So join us starting next week for Crash Course Business - Soft Skills with your host, Evelyn From the Internets.

Check out Evelyn's channel: https://www.youtube.com/user/spicyeve


***

Crash Course is 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:

Eric Prestemon, Sam Buck, Mark Brouwer, Bob Doye, Jennifer Killen, Naman Goel, Nathan Catchings, Brandon Westmoreland, dorsey, Indika Siriwardena, Kenneth F Penttinen, Trevin Beattie, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Malcolm Callis, William McGraw, Andrei Krishkevich, Rachel Bright, Jirat, Ian Dundore
--

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admin
2 vistas · 7 años hace

Should you go to film school? Great question? But there aren't necessarily a lot of direct answers. Do you want to go to Hollywood? Do you want to make movies in your spare time? Do you want to learn about world cinema? Do you want to be a director? A cinematographer? An editor? Do you want to pay for tuition? All of these questions can help you figure it out, but today Lily Gladstone will talk us through a few important things to keep in mind when deciding if film school may be right for you!

***

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

The Latest from PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***

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Support Crash Course on Patreon: http://patreon.com/crashcourse

admin
2 vistas · 7 años hace

You can directly support Crash Course at https://www.patreon.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing this content.

Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom.

In which John Green teaches you about the rise of the conservative movement in United States politics. So, the sixties are often remembered for the liberal changes that the decade brought to America, but lest you forget, Richard Nixon was elected to the presidency during the sixties. The conservative movement didn't start with Nixon though. Modern conservatism really entered mainstream consciousness during the 1964 presidential contest between incumbent president and Kennedy torch-bearer Lyndon B Johnson, and Republican senator Barry Goldwater. While Goldwater never had a shot in the election, he used the campaign to talk about all kinds of conservative ideas. At the same time, several varying groups, including libertarian conservatives and moral conservatives, began to work together. Goldwater's trailblazing and coalition building would pay off in 1968 when Richard Nixon was elected to the White House, and politics changed forever when Nixon resigned over the Watergate scandal. You'll also learn about the ERA, , EPA, OSHA, the NTSB, and several other acronyms and initialisms.

Hey teachers and students - Check out CommonLit's free collection of reading passages and curriculum resources to learn more about the events of this episode. Richard Nixon ushered in an age of conservatism, first rising to the national stage with his Checkers speech: https://www.commonlit.org/text....s/senator-nixon-s-ch
Nixon’s presidency ended in near impeachment however over the corruption of the Watergate scandal: https://www.commonlit.org/text....s/watergate-undoing-

admin
2 vistas · 7 años hace

Copyright and other media regulations have always been a bit tricky, but the internet made all of that infinitely more complicated. But what does all of that mean for you, the consumer?

***

Resources:
The Berkman Klein Center for Internet & Society at Harvard University’s Digital Literacy Platform http://dlrp.berkman.harvard.edu/

RIAA v. The People: Five Years Later https://www.eff.org/wp/riaa-v-....people-five-years-la

Music Industry A-Listers Call on Congress to Reform Copyright Act https://www.billboard.com/arti....cles/business/731865

Department of Justice: Child Exploitation & Obscenity Section https://www.justice.gov/criminal-ceos

Why Kids Sext https://www.theatlantic.com/ma....gazine/archive/2014/

Youth Sexting: A Legislative and Constitutional Analysis https://mjlr.org/2014/10/27/se....xting-prosecutions-m

Consent for processing children’s personal data in the EU: following in US footsteps? https://www.tandfonline.com/do....i/full/10.1080/13600

Lexicon of Lies: Teaching Resources https://datasociety.net/pubs/o....h/DataAndSociety_Tea

***

Crash Course is 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, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
--

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admin
2 vistas · 7 años hace

In which John Green teaches you about nonviolence and peace movements in the 20th century. What is nonviolence? What is a peace movement? Well. traditionally, humans often resort to violence when they come into conflict. In the 20th century, it became much more common for people to enact change by means of nonviolence, and there was a common thread of connection between many of the most notable advocates of peaceful change. Crash Course will take you from Gandhi to Gregg to Bayard Rustin to Martin Luther King, Jr, to the Cold War to Arab Spring along a path of nonviolent resistance and peaceful change. It's pretty great.

Citation 1: King, Martin Luther, Jr., Farewell Statement for All India Radio, 9 March 1959.

SUBBABLE SHOUTOUTS!

From Peter Borenstein to Mickale Dillen: Happy late birthday to the best Ezreal mid in NA that I know

admin
2 vistas · 7 años hace

We’ve discussed the four main branches of engineering but there are so many other fields doing important work, so today we’re going to explore a few of them. In this episode we’ll explore some of the history and fundamentals of industrial engineering, biomedical engineering, and bioengineering.

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***

RESOURCES:
https://www.livescience.com/47....702-aerospace-engine
https://www.egr.msu.edu/underg....raduate/academics/pr
http://educatingengineers.com/....degrees/applied-engi
https://www.bls.gov/ooh/archit....ecture-and-engineeri
http://mime.oregonstate.edu/wh....at-do-industrial-eng
https://www.autodesk.com/redsh....ift/lights-out-manuf
https://www.automationworld.co....m/article/technologi
https://www.britannica.com/bio....graphy/Frederick-W-T
http://www.mtu.edu/biomedical/department/what-is/
https://www.britannica.com/tec....hnology/bioengineeri
https://www.livescience.com/59....581-ancient-prosthet
https://www.smithsonianmag.com..../smart-news/study-re
https://www.britannica.com/biography/Rene-Laennec
https://www.ncbi.nlm.nih.gov/p....mc/articles/PMC15704
https://www.britannica.com/bio....graphy/Wilhelm-Rontg
https://www.seas.upenn.edu/about-seas/history.php
https://www.ncbi.nlm.nih.gov/p....mc/articles/PMC29628
https://www.ncbi.nlm.nih.gov/p....mc/articles/PMC45374
https://www.sciencedirect.com/....science/article/pii/

***

Crash Course is 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, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, D.A. Noe, Shawn Arnold, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft
--

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admin
2 vistas · 7 años hace

We’ve talked about how broad a concept “the media” really is – and given that, it can be hard to keep track of all the different forces that constitute “the media.” It can be tough, but it’s not impossible. Today we’re talking about how all those big players fit together and why all those mergers and acquisitions matter to being a media literate citizen.

***

Resources:
NEW ERA FOR THE TELEPHONE: OWNERSHIP REPLACING RENTAL https://www.nytimes.com/1982/1....2/16/business/new-er

AT&T BREAKUP II : Highlights in the History of a Telecommunications Giant http://articles.latimes.com/19....95-09-21/business/fi

BELL SYSTEM BREAKUP OPENS ERA OF GREAT EXPECTATIONS AND GREAT CONCERN https://www.nytimes.com/1984/0....1/01/us/bell-system-

The Federal Communications Commission and the Bell System: Abdication of Regulatory Responsibility https://www.repository.law.indiana.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=2509&context=ilj

The Knight Foundation: How Youth Navigate the News Landscape https://knightfoundation.org/r....eports/how-youth-nav

Experimental evidence of massive-scale emotional contagion through social networks http://www.pnas.org/content/111/24/8788.full

Facebook and Twitter are being used to manipulate public opinion https://www.theguardian.com/te....chnology/2017/jun/19

***

Crash Course is 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, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
--

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admin
2 vistas · 7 años hace

Today we’re going to talk about confidence intervals. Confidence intervals allow us to quantify our uncertainty, by allowing us to define a range of values for our predictions and assigning a likelihood that something falls within that range. And confidence intervals come up a lot like when you get delivery windows for packages, during elections when pollsters cite margin of errors, and we use them instinctively in everyday decisions. But confidence intervals also demonstrate the tradeoff of accuracy for precision - the greater our confidence, usually the less useful our range.

Crash Course is 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, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, D.A. Noe, Shawn Arnold, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft
--

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user49
2 vistas · 6 años hace

PUBBLICITA':
http://www.youtube.com/channel..../UCQk1nZSZ5ip-GtQSTq Visitate questo canale gestito da 3 ragazzi che mostrano cose interessanti riguardo ai videogames.

Oggi per concludere in bellezza la settimana vedremo un bel gioco per la Xbox 360, non si tratta di un gioco qualuneu ma anch'esso è un tie in videoludico, tratto da un film del 2008, realizzato dalla Dreamworks ovvero Kung Fu Panda. Tutti voi l'avrete visto o ne avrete sentito parlare, il videogame forse molti di voi l'avrete snobbato e bisogna dire che come da tradizione i tie in videoludici di solito son brutti ma questo gioco sfrutta discretamente la sua licenza cinematografica, dandoci in pasto un videogame sufficentemente divertente. Provatelo

aciprensa
2 vistas · 6 años hace

Una adolescente italiana de 18 años que podría llegar a los altares.




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