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Tue, 2018-03-06 10:55
I saw this T-shirt recently, and didn't get it. (The joke or the T-shirt.)It turns out that the third derivative of displacement \(x\) with respect to time \(t\) — that is, the derivative of acceleration \(\mathbf{a}\) — is called 'jerk' (or sometimes, boringly, jolt, surge, or lurch) and is measured in units of m/s³. So far, so hilarious, but is it useful? It turns out that it is. Since the force \(\mathbf{F}\) on a mass \(m\) is given by \(\mathbf{F} = m\mathbf{a}\), you can think of jerk as being equivalent to a change in force. The lurch you feel at the onset of a car's acceleration — that's jerk. The designers of transport systems and rollercoasters manage it daily.$$ \mathrm{jerk,}\ \mathbf{j} = \frac{\mathrm{d}^3 x}{\mathrm{d}t^3}$$Here's a visualization of velocity (green line) of a Tesla Model S driving in a parking lot. The coloured stripes show the acceleration (upper...
Tue, 2018-03-06 10:27
In this episode, host Andrew Geary speaks with David Scolman, guest editor of the March 2018 issue of The Leading Edge, on the Permian Basin. The Permian Basin contains many of the most actively pursued unconventional plays in the world. According to IHS Markit, the basin produced a record 815 million barrels of oil last year, 97 years after its first discovery. This episode highlights the recent seismic-based work conducted by energy companies pursuing the basin’s rich accumulations of oil and natural gas. David Scolman is the owner of Scolman Exploration Services, LLC in Lakewood, Colorado. He has over 35 years of experience in domestic and international oil and natural gas exploration and development. Before beginning his consulting business, Mr. Scolman worked for a variety of oil and gas firms including The Superior Oil Company, Mobil Oil Company, PG...
Tue, 2018-03-06 10:00
Dr. Julia F.W. Gale is set to speak at ACE Short Course – Fracture Characterization. The short course will take place Saturday, 19 May at 8 a.m.-5 p.m. There are only 70 seats available - register today when you register for ACE 2018 for an overview of fracture characterization and why it is needed for hydrocarbon reservoirs.More...
Tue, 2018-03-06 08:11
Dr. Zacharia, Director of Oak Ridge National Laboratory, highlights the reasons why Oak Ridge invests in the next generation of STEM professionals.
Tue, 2018-03-06 08:05
Lots of great (free) events coming up at Carnegie: Check them out and reserve your spot here:
Tue, 2018-03-06 06:00
On Dec. 11, 2013, Upstate New York’s Tug Hill region received more than 100 centimeters of snow in 24 hours. And annually, the region, which covers more than 5,000 square kilometers to the east of Lake Ontario, can see up to five times that amount. In comparison, Toronto, on the northwestern coast of the lake, averages less than 125 centimeters of snow each year. Read more
Mon, 2018-03-05 16:50
The 5th USA Science and Engineering Festival will be held in Washington, D.C. April 6-8, 2018. We are looking for volunteers to help staff the CASS exhibit and speak with the public for 3 hour shifts.
Mon, 2018-03-05 15:22
At least one house is reported to have been damaged.
Mon, 2018-03-05 10:30
FOR IMMEDIATE RELEASE March 5, 2018   ALEXANDRIA, Va. – The American Geosciences Institute (AGI) congratulates Master's student Anna Stanczyk and doctoral student Nicole Shibley as the 2018 recipients of the Harriet Evelyn Wallace Scholarship. This highly competitive scholarship, which is awarded to women pursuing graduate degrees in geoscience, provides a $5,000 award for one academic year. Wallace Scholars who are continuing their graduate studies are eligible to apply for the award a second time.   Anna Stanczyk (University of Utah) is a Master's student at the University of Utah studying rock avalanches. Her current research is a multidisciplinary investigation of an ancient valley-blocking rock avalanche deposit in the natural laboratory of Hop Valley, Zion National Park. Her study fuses geological engineering, geochronology, geomorphology, and stratigraphy to clarify the occurrence and impacts of rock avalanches in areas of restricted topography. It also takes a...
Mon, 2018-03-05 01:00
In an upcoming edition centered on the theme of New Developments in Diversity and Inclusiveness in Geosciences, the Journal of Geoscience Education (JGE) will explore issues on pipeline development, recruitment and retention, graduate education and special topics such as minority serving institutions and non-traditional opportunities in both case studies and broad research investigations. Potential authors should submit a letter of intent by April 1, 2018.