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Cohomology Operations Lectures by N.E. Steenrod David B. A. Epstein (bookos z1.

Cohomology

What is? Marxism. Marxism is a worldview and a method of societal analysis that focuses on class relations and societal conflict, that uses a materialist interpretation of historical development, and a dialectical view of social transformation.

Marxism

Marxist methodology uses economic and sociopolitical inquiry and applies that to the critique and analysis of the development of capitalism and the role of class struggle in systemic economic change. In the mid-to-late 19th century, the intellectual tenets of Marxism were inspired by two German philosophers: Karl Marx and Friedrich Engels. Marxist analyses and methodologies have influenced multiple political ideologies and social movements. Marxism encompasses an economic theory, a sociological theory, a philosophical method, and a revolutionary view of social change.[1] Marxism builds on a materialist understanding of societal development, taking as its starting point the necessary economic activities required to satisfy the material needs of human society. V. What is? 10 examples of websites that are Creative. National Museum of Natural History Unearthed: NMNH Cupid.

Love is in the air at the National Museum of Natural History!

National Museum of Natural History Unearthed: NMNH Cupid

Our scientists are helping species look for love in this series of “dating profiles” to celebrate Valentine’s Day. Will #NMNHcupid help them find their one and only? What I look like through a microscope. Trichoplax sp. by Allen Collins, Smithsonian Institution. Resources for Teaching and Learning Biology. General Biology Nature of Science EvolutionSustainability General Biology: ActionBioscience.org features issues-based articles written by prominent scientists, accompanying lesson ideas, and related teaching resources for high school and undergraduate biology educators.

Resources for Teaching and Learning Biology

AAAS Science NetLinks is a guide to standards-based Internet experiences for students. BiosciEdNet.org provides a searchable database of resources from BEN Collaborative partner organizations such as AIBS, Ecological Society of America, American Society for Microbiology, and Botanical Society of America. BioQUEST Curriculum Consortium promotes curriculum innovation by serving a national role as a networking resource for individuals to share, distribute, and enhance cooperation among on-going and future biology education development projects.

Evolution Resources from the National Academies. In the News: Your Inner Fish – A Scientific Adventure Have you ever wondered why people look the way they do?

Evolution Resources from the National Academies

ICBL: Investigative Case Based Learning. Evolution. Deep Look. Plantastic! S BioInteractive. Follow Friday: Exploring the Wild World of Botany. Astrophysicists get to study the whole wide universe.

Follow Friday: Exploring the Wild World of Botany

Evolutionary biologists get to study the very origins of life. Botanists, they get…plants. It’s a humble field. In Harry Potter terms, it’s like skipping the fun Hogwarts classes—Dark Arts, Charms, Care of Magical Animals—in favor of Herbology. And indeed, interest in botany is declining. JSTOR Global Plants Twitter feed Botanists stare at dead leaves, petals, and seeds all day, which doesn’t sound like an exciting way to pass the time. JSTOR Global Plants’ Twitter feed is also packed with stories and photos that’ll show you how vital—and cool—botany is. The PlantNet App Calling all citizen scientists! Pl@ntNet - Mobile. Restore your computer from a system image backup. Free Online Courses, College Classes and Video Lessons - Education Portal Academy.

530 Free Online Courses from Top Universities. Get 1200 free online courses from the world’s leading universities — Stanford, Yale, MIT, Harvard, Berkeley, Oxford and more.

530 Free Online Courses from Top Universities

You can download these audio & video courses (often from iTunes, YouTube, or university web sites) straight to your computer or mp3 player. Over 30,000 hours of free audio & video lectures, await you now. Humanities & Social Sciences Art & Art History Courses. The most important lesson from 83,000 brain scans: Daniel Amen at TEDxOrangeCoast. TEDxOrlando - Wendy Suzuki - Exercise and the Brain. Aging Brains Aren’t Necessarily Declining Brains. For years, conventional wisdom held that growing older tends to be bad news for brains.

Aging Brains Aren’t Necessarily Declining Brains

Past behavioral data largely pointed to loss in cognitive – that is, thinking – abilities with age, including poorer memory and greater distractibility. Physical measures of brain structure also showed atrophy, or loss of volume, in many regions with age. Watching older brains at work. Brain Scan Foretells Who Will Fold Under Pressure. Force of habit: Stress hormones switch off areas of the brain for goal-directed behaviour. Cognition psychologists at the Ruhr-Universität together with colleagues from the University Hospital Bergmannsheil (Prof.

Force of habit: Stress hormones switch off areas of the brain for goal-directed behaviour

Dr. Martin Tegenthoff) have discovered why stressed persons are more likely to lapse back into habits than to behave goal-directed. The team of PD Dr. Lars Schwabe and Prof. Dr. Everyday Stress Can Shut Down the Brain's Chief Command Center. The entrance exam to medical school consists of a five-hour fusillade of hundreds of questions that, even with the best preparation, often leaves the test taker discombobulated and anxious.

Everyday Stress Can Shut Down the Brain's Chief Command Center

For some would-be physicians, the relentless pressure causes their reasoning abilities to slow and even shut down entirely. The experience—known variously as choking, brain freeze, nerves, jitters, folding, blanking out, the yips or a dozen other descriptive terms—is all too familiar to virtually anyone who has flubbed a speech, bumped up against writer’s block or struggled through a lengthy exam. For decades scientists thought they understood what happens in the brain during testing or a battlefront firefight. In recent years a different line of research has put the physiology of stress in an entirely new perspective.

The response to stress is not just a primal reaction affecting parts of the brain that are common to a wide array of species ranging from salamanders to humans. Neural Mechanisms Linked With Vulnerability To Anxiety. How The Brain Processes The #Emotions — P... The Learning Brain Gets Bigger. With age and enough experience, we all become connoisseurs of a sort.

The Learning Brain Gets Bigger

After years of hearing a favorite song, you might notice a subtle effect that’s lost on greener ears. Meditation found to increase brain size. Kris Snibbe/Harvard News Office Sara Lazar (center) talks to research assistant Michael Treadway and technologist Shruthi Chakrapami about the results of experiments showing that meditation can increase brain size. People who meditate grow bigger brains than those who don’t.

Researchers at Harvard, Yale, and the Massachusetts Institute of Technology have found the first evidence that meditation can alter the physical structure of our brains. Personality Traits Correlate With Brain Activity. Your personality says a lot about you. To categorize people by their disposition, psychologists have long relied on questionnaires.

Now, however, researchers may be closing in on a tangible view of character in the brain. 20 Amazing Facts About Your Brain. The human brain is amazing and the more I read about it the more fascinated I become with not only it’s limitations, but also it’s immense power. Since I originally wrote the post 30 Amazing Facts About Your Brain I have been on the look out for more amazing tidbits. Here are another 20 for you to wrap your head round, but don’t make the mistake of thinking they don’t apply to you, because they do. 1. 30 Amazing Facts About Your Brain. Get The New Ebook ’70 Amazing Facts About Your Brain’ now if you sign up for my newsletter you will get a PDF version of the book along with 3 other books on goal setting, motivational quotes and dealing with stress.

If you’d like a copy of the Kindle version, that is only available through Amazon here and it’s priced at a very affordable $2.99. 5 common beliefs about the human brain that are actually totally false. MYTH: HUMANS USE ONLY 10 PERCENT OF THEIR BRAIN FACT: The 10 percent myth (sometimes elevated to 20) is mere urban legend, one perpetrated by the plot of the 2011 movieLimitless, which pivoted around a wonder drug that endowed the protagonist with prodigious memory and analytical powers.

In the classroom, teachers may entreat students to try harder, but doing so will not light up “unused” neural circuits; academic achievement does not improve by simply turning up a neural volume switch.MYTH: “LEFT BRAIN” and “RIGHT BRAIN” PEOPLE DIFFER FACT: The contention that we have a rational left brain and an intuitive, artistic right side is fable: humans use both hemispheres of the brain for all cognitive functions.

The left brain/right brain notion originated from the realization that many (though not all) people process language more in the left hemisphere and spatial abilities and emotional expression more in the right. Right Brain, Left Brain? Scientists Debunk Popular Theory. Maybe you're "right-brained": creative, artistic, an open-minded thinker who perceives things in subjective terms. Or perhaps you're more of a "left-brained" person, where you're analytical, good at tasks that require attention to detail, and more logically minded. Lucid dreams and metacognition: Awareness of thinking; awareness of dreaming.

To control one's dreams and to live 'out there' what is impossible in real life -- a truly tempting idea. Lucid dreamers help scientists locate the seat of meta-consciousness in the brain. The First Real Reason We Need To Sleep. We know we need to sleep. We know our brains and bodies work better after sleep. But what we didn't know, until now, was why. The Brain May Disassemble Itself in Sleep. Compared with the hustle and bustle of waking life, sleep looks dull and unworkmanlike. Except for in its dreams, a sleeping brain doesn’t misbehave or find a job. It also doesn’t love, scheme, aspire or really do much we would be proud to take credit for.

Is the Purpose of Sleep to Let Our Brains “Defragment,” Like a Hard Drive? Imagining the Future Invokes Your Memory. I REMEMBER my retirement like it was yesterday. Old Memories Interfere With Remembering New Ones. Researchers show that memories reside in specific brain cells. Our fond or fearful memories — that first kiss or a bump in the night — leave memory traces that we may conjure up in the remembrance of things past, complete with time, place and all the sensations of the experience. Neuroscientists call these traces memory engrams. UCSB scientists discover how the brain encodes memories at a cellular level. Instant Expert: The Human Brain - life - 04 September 2006 - New. Decision-Making and Control in the Brain.

Damage to the brain's frontal lobe is known to impair one's ability to think and make choices. How Thinking Works: 10 Brilliant Cognitive Psychology Studies Everyone Should Know. How Thinking Works: 10 Brilliant Cognitive Psychology Studies Everyone Should Know. TO UNDERSTAND IS TO PERCEIVE PATTERNS. Brain is not fully mature until 30s and 40s. Neuropsychology. Why Emotions Are Attention-getters. Attention Tunes The Mind's Ear. Making Sense of the World, Several Senses at a Time. Why Emotions Are Attention-getters. Attention Tunes The Mind's Ear. The Secrets of Your Brain's Zoom Lens.

Making Sense of the World, Several Senses at a Time. Neuron's cobweb-like cytoskeleton (its interior scaffolding) Neuron viewed with an electron microscope. Neuron. Know Your Neurons: How to Classify Different Types of Neurons in the Brain’s Forest. What the Synapses in Your Brain Actually Look Like. What the Synapses in Your Brain Actually Look Like. Diffusion MRI image of the brain. How mapping neurons could reveal how experiences affect mental wiring. A Glance at the Brain’s Circuit Diagram. First map of the human brain reveals a simple, grid-like structure between neurons. The Brain's Highways: Mapping the Last Frontier.

Cooperative Neural Networks Suggest How Intelligence Evolved. BRAIN POWER: From Neurons to Networks. Brain Waves. How The Brain Rewires Itself. How The Brain Rewires Itself. Neuroplasticity. Neuroplasticity of Forming Habits. Neuroplasticity. Exercise Plus Fasting May Boost Brain's Neurons. Neurogenesis. Neurogenesis: How To Grow New Brain Cells. Neurogenesis. Sebastian Seung: I am my connectome. The Human Connectome Project. The Connectome — Harvard School of Engineering and Applied Sciences. Human Connectome Project. The Brain: A Body Fit for a Freaky-Big Brain. The Brain: A Body Fit for a Freaky-Big Brain. THE BRAIN FROM TOP TO BOTTOM.

THE BRAIN FROM TOP TO BOTTOM. Brain Facts and Figures. BrainFacts.org Homepage. Science: A New Map of the Human Brain. Brain Structures and Their Functions. 3D Brain. The Triune Brain. Brain Atlas - Introduction. Cognitive Atlas. The Whole Brain Atlas. Cognitive Neuroscience Society.