How to Detect that a Problem is Not Bounded with the Simplex Method
Energy & ResourcesIs Your Linear Program Running Wild? How to Spot Unboundedness with Simplex So, you’re wrestling with a linear programming problem, trying to find the absolute best solution. You’re using the Simplex method, that workhorse algorithm, but something feels…off. Maybe the solution just keeps getting better and better, without ever settling down. What’s going on? Chances
The Canadian Shield
Natural EnvironmentsThe Canadian Shield: Canada’s Oldest Storyteller Picture this: a landscape stretching as far as the eye can see, etched with the stories of billions of years. That’s the Canadian Shield, also known as the Laurentian Shield or Plateau, a massive chunk of ancient rock that forms the very heart of North America. It’s not just
Marine surface currents
Earth ScienceWhat can debris tell us about surface currents? The ocean surface is in motion. One way to realize that is when you dump something into the ocean. Where does it end up? The tsunami that hit Japan in March 2011 washed a lot of stuff into the ocean. The image above is a model created
What are the relative contributions of planets to the Milankovitch Cycles?
Earth ScienceAsked by: George Long What contributes to Milankovitch cycles? This wobble is due to tidal forces caused by the gravitational influences of the Sun and Moon that cause Earth to bulge at the equator, affecting its rotation. The trend in the direction of this wobble relative to the fixed positions of stars is known as
What is the reason why there are radiosonde measurements in the atmosphere?
Earth ScienceAsked by: George Long What is the purpose of a radiosonde? The radiosonde is a small instrument package that is suspended below balloon filled with either hydrogen or helium. As the radiosonde is carried aloft it measures pressure, temperature, and relative humidity. How does a radiosonde help predict the weather? A transmitter on the radiosonde
How can I describe this data using a graph?
Earth ScienceA graph is a graphical representation of data. Visualizing data through graphs helps to detect patterns, trends, relationships, and structures in data. Use graphs in conjunction with maps to explore data or help tell a story. Graphs can be created from both tabular and raster data, and there is a different set of graphs for