Online courses directory (19947)

Diretrizes e Ferramentas visando cumprir as rotinas trabalhistas observando os parâmetros legais vigentes. Atualize-se!

This course will provide you with a basic knowledge of plasma physics and of its applications, which will enable you to understand some of the most important phenomena in space and astrophysics, how plasmas can be used in industry, and how we can achieve fusion on earth to contribute solving the problem of energy in sustainable development. In the first part, we will introduce the plasma state and describe the models, from single particles to fluid, which can be applied to study its dynamics. In the second part, we will illustrate and discuss examples of plasmas in space and in astrophysics, and discuss plasma applications in industry and medicine. The third part will be dedicated to fusion energy, from the design and technology of a fusion reactor, to plasma confinement configurations for fusion, and, finally, to confining, heating, controlling and extracting energy from a burning plasma.

This physics course, taught by world-renowned experts in the field, will provide you with an overview of applications in plasma physics. From the study of far distant astrophysical objects over diverse applications in industry, to the ultimate goal of sustainable electricity generation from nuclear fusion.

In the first part of this course, you will learn how nuclear fusion powers our Sun and the stars in the Universe. You will explore the cyclic variation of the Sun’s activity, how plasma flows can generate large-scale magnetic fields, and how these fields can reconnect to release large amounts of energy, manifested for instance by violent eruptions on the Sun.

The second part of this course discusses the key role plasma applications play today in industry and medicine. After a brief survey of the field, you will study in detail how plasmas are generated and sustained in strong electric fields and how this knowledge can be used to avoid undesired occurrence of plasmas in the form of electrical arcs. You will then, in detail, study the transition region between plasma and material surface, called the sheath, and you will learn why its properties are indispensable for the manufacturing of today’s integrated circuits.

Finally, in the third and most extensive part of this course, you will familiarize yourself with the different approaches to fusion energy, the current status, and the necessary steps from present-day experimental devices towards a fusion reactor providing electricity to the grid.

After deriving the general conditions for net energy gain from fusion, we will focus on magnetic confinement fusion. You will learn about the key ingredients of a magnetic fusion reactor, how to confine, heat, and control fusion plasmas at temperatures of 100 million degrees Kelvin, explore the relevant transport mechanisms, and explore the challenges of plasma wall interactions and structural materials.

To enjoy this course on plasma applications, it is recommended to first familiarize yourself with the plasma physics basics taught in Plasma Physics: Introduction.

Plasma, the fourth state of matter, is by far the most abundant form of known matter in the universe. Its behavior is very different from the other states of matter we are usually familiar with. To understand it, a rigorous formalism is required. This is essential not only to explain important astrophysical phenomena, but also to optimize many industrial and medical applications and for achieving fusion energy on Earth.

This physics course, taught by world-renowned experts of the field, gives you the opportunity to acquire a basic knowledge of plasma physics. A rigorous introduction to the plasma state will be followed by a description of the models, from single particle, to kinetic and fluid, which can be applied to study its dynamics. You will learn about the waves that can exist in a plasma and how to mathematically describe them, how a plasma can be controlled by magnetic fields, and how its complex and fascinating behavior is simulated using today’s most powerful supercomputers.

This course is the first of two courses introducing plasma physics and its applications. After completing this course, you will have the prerequisites to enjoy Plasma Physics: Applications, which deals with plasma applications in astrophysics, industry, and nuclear fusion.

This course describes the processes by which mass, momentum, and energy are transported in plasmas, with special reference to magnetic confinement fusion applications.

The Fokker-Planck collision operator and its limiting forms, as well as collisional relaxation and equilibrium, are considered in detail. Special applications include a Lorentz gas, Brownian motion, alpha particles, and runaway electrons.

The Braginskii formulation of classical collisional transport in general geometry based on the Fokker-Planck equation is presented.

Neoclassical transport in tokamaks, which is sensitive to the details of the magnetic geometry, is considered in the high (Pfirsch-Schluter), low (banana) and intermediate (plateau) regimes of collisionality.

This course explores the following topics: derivation of elastic and plastic stress-strain relations for plate and shell elements; the bending and buckling of rectangular plates; nonlinear geometric effects; post-buckling and ultimate strength of cold formed sections and typical stiffened panels used in naval architecture; the general theory of elastic shells and axisymmetric shells; buckling, crushing and bending strength of cylindrical shells with application to offshore structures; and the application to crashworthiness of vehicles and explosive and impact loading of structures. The class is taught during the first half of term.

This course we will walk through building the first level of a platform game, similar to Super Mario Bros.

Firms such as Apple, Alibaba, Facebook, SalesForce, Uber and Yelp operate as platform ecosystems that match buyers and sellers, gain value and market share from network effects, and harness their users to innovate.

This course teaches you how to convert products to platforms and how to generate platform innovation. You will learn how to negotiate platform startup, convert existing businesses, and make vital decisions on issues of openness, cannibalization, and competition.

You will discover how to apply concepts from two sided networks, information asymmetry, pricing, intellectual property, and game theory to real problems.

This course is taught by the instructor who literally wrote the book on this topic, “Platform Revolution: How Networked Markets Are Transforming the Economy—and How to Make Them Work for You.”

This course is part of both the Digital Leadership and Product Management MicroMasters programs.

Learn how to create a platform that will expand your online presence to new heights!

Master Cold Calling faster with these Practical Tools

This philosophy course explores the origins of Western philosophy – a rich tapestry of ideas that began with the most noted ancient Greek and Roman philosophers.

By examining the work of these historic figures, students will attain a strong grasp of Western philosophy’s basic spirit. In doing so, they’ll cultivate deeper thinking abilities, explore noble values, and learn to contemplate the world around them in new ways.

本课程面向各专业本科生，通过课堂讲授与课外阅读讨论的方法，把握古希腊罗马哲学家丰富的思想，探讨哲学精神的起源，揭示古希腊民族的精神取向，阐明古希腊民族思维方式的特征，帮助学生把握哲学的基本精神，养成理论思维的能力，培养高尚的情操，提高人文素质。

A step-by-step guide found nowhere else but in this course! The actual piano riffs you CAN play to amaze your friends!

Play Christina Perri by ear on any instrument. Hear melody, harmony and chords using Musivu's Ear Training technique.

Learn how to play music by ear using the Musivu system. In this class we'll use Mumford & Sons' "The Cave" as an example

Learn how to play by ear using the Musivu system. In this class we'll use Mumford & Sons "Your Song" as an example.

Can't play along w/ your favorite songs? These 5 lessons will help you learn to play in time with your favorite tunes,

Ben Hewlett guides you further on an amazing journey learning how to play the harmonica - you're going to love it!

Here are Ben's best tools for improvising in blues, folk, jazz, rock & everything; easy step by step guide to impro!

Take this course to discover how to bend all the notes well and how to add a massive technique called tongue blocking

Learn the basics of intermediate harmonica playing in 12 easy lectures. Today you are starting with blues and rhythms!