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  • Video 
    How Do Traffic Signals Work?

    How Do Traffic Signals Work?

    Traffic management in dense urban areas is an extremely complex problem with a host of conflicting goals and challenges. One of the most fundamental of those challenges happens at an intersection, where multiple streams of traffic - including vehicles, bikes and pedestrians - need to safely, and with any luck, efficiently, cross each others’ paths. However we accommodate it now or in future, traffic will continue to be one of the biggest challenges in our urban areas and traffic signals will continue to be one of its solutions.

    Subjects:
    Transportation
    Keywords:
    Traffic signs signals Roads -- Interchanges intersections Traffic flow
    Resource Type:
    Video
     
  • Video 
    How Do Spillways Work?

    How Do Spillways Work?

    We normally build a dam to hold water back and store it for use in water supply, irrigation, hydropower, or flood control. But sometimes we have to let some water go. Whether we need it downstream or the impounded water behind the dam is simply too full to store any more, nearly every dam needs a spillway to safely discharge water. The spillway is a critical part of any dam and often the most complex component. So how does it work?

    Subjects:
    Hydraulic Engineering
    Keywords:
    Hydraulic structures Spillways Dams Reservoirs Diversion structures (Hydraulic engineering)
    Resource Type:
    Video
     
  • Video 
    How Does the Power Grid Work?

    How Does the Power Grid Work?

    The modern world depends on electricity. It’s a crucial resource, especially in urban areas, but electricity can’t be created, stored, and provided at a later time. The instant it’s produced, it’s used no matter how far apart the producer is from the user. And the infrastructure that makes all this possible is one of humanity’s most important and fascinating engineering achievements: the power grid.

    Subjects:
    Building Services Engineering and Electrical Engineering
    Keywords:
    Electric power distribution
    Resource Type:
    Video
     
  • Video 
    How Electricity Generation Really Works

    How Electricity Generation Really Works

    This video continues the series on the power grid by diving deeper into the engineering of large-scale electricity generation. The importance of electricity in our modern world can hardly be overstated. What was a luxury a hundred years ago is now a critical component to the safety, prosperity, and well-being of nearly everyone. Generation is the first step electricity takes on its journey through the power grid, the gigantic machine that delivers energy to millions of people day in and day out. So how does it work?

    Subjects:
    Building Services Engineering and Electrical Engineering
    Keywords:
    Electric power production
    Resource Type:
    Video
     
  • Video 
    How Do Substations Work?

    How Do Substations Work?

    Untangling the various equipment you might see in an electrical substation. In many ways, the grid is a one-size-fits-all system - a gigantic machine to which we all connect spinning in perfect synchrony across, in some cases, an entire continent. On the other hand, our electricity needs, including when we need it, how much we need, and how reliably it should be delivered vary widely. Substations play a critical role in controlling and protecting the power grid.

    Subjects:
    Building Services Engineering and Electrical Engineering
    Keywords:
    Electric power distribution Electric substations
    Resource Type:
    Video
     
  • Video 
    How do Electric Transmission Lines Work?

    How do Electric Transmission Lines Work?

    Discussing some of the fascinating engineering that goes into overhead electric power transmission lines. In the past, power generating plants were only able to serve their local areas. As power plants grew larger and further away from populated areas, the need for ways to efficiently move electricity over long distances has become more and more important. Stringing power lines across the landscape to connect cities to power plants may seem as simple as connecting an extension cord to an outlet, but the engineering behind these electric superhighways is more complicated and fascinating than you might think.

    Subjects:
    Building Services Engineering and Electrical Engineering
    Keywords:
    Electric power transmission Electric lines
    Resource Type:
    Video
     
  • Video 
    World's Largest Batteries - (Pumped Storage)

    World's Largest Batteries - (Pumped Storage)

    The vast majority of our grid-scale storage of electricity uses this clever method. Electricity faces a fundamental problem that comes with pretty much any product that’s provided on-demand: our ability to generate large amounts of it doesn’t match up that closely with when we need it. The storage of electricity for later use, especially on a large scale, is quite challenging. That’s not to say that we don’t store energy at grid scale though, and there’s one type of storage that makes up the vast majority of our current capacity.

    Subjects:
    Environmental Engineering, Hydraulic Engineering, and Mechanical Engineering
    Keywords:
    Energy storage Water-power Pumped storage power plants
    Resource Type:
    Video
     
  • Video 
    Power and Politics in Today’s World - Office Hours

    Power and Politics in Today’s World - Office Hours

    Power and Politics in Today's world, taught by professor Ian Shapiro, provides answers to the questions: How did we get from the huge euphoria that followed the fall of communism in the early 1990s to our present politics of fear and resentment, and what are the prospects going forward? In this playlist, Shapiro and the course's designated teaching fellow discuss recurring and/or interesting questions raised by students in the course.

    Subjects:
    Political Science
    Keywords:
    International relations Power (Social sciences) Political science
    Resource Type:
    Video
     
  • Video 
    SAS: How to Tutorials - Advanced Analytics

    SAS: How to Tutorials - Advanced Analytics

    The free resources help you learn SAS quickly without a significant financial or time commitment. In Advanced Analytics module, you will explore the use of SAS in basic statistics, econometrics, forecasting, machine learning, optimization, and more.

    Subjects:
    Statistics and Research Methods
    Keywords:
    Statistics -- Data processing SAS (Computer file)
    Resource Type:
    Video
     
  • Video 
    Learn R + Statistics

    Learn R + Statistics

    Learn how to use R software for performing statistical tests.

    Subjects:
    Statistics and Research Methods
    Keywords:
    Statistics -- Data processing Mathematical statistics -- Data processing R (Computer program language)
    Resource Type:
    Video