Beach and cliff retreat induced by storm groups at Forte Novo,Algarve (Portugal)

Littoral cell dynamics may change through time as a reaction to modifications of the coastal system. Along the Vilamoura-Quarteira coastline, the construction of a groin field limited the sediment supply to the already narrow Forte Novo beach, located downdrift, enhanced wave action on the cliff base and lead to long-term persistent cliff retreat. This research uses a set of surveys from November 2009 to March 2010 to determine short-term soft cliff erosion associated to storm groups at this sediment starved area. Following the initial LiDAR survey, three subsequent surveys were performed using a reflectorless total station for monitoring the cliff face, and RTK-DGPS to monitor the position of the cliff top, the cliff foot and the topography of the adjacent beach. Results indicate an important reduction in beach levels during successive storms (without significant beach recovery in between), allowing waves to further attack the cliff base and contributing to further enhance the structural and permanent cliff retreat. This work demonstrates how a combination of magnitude and frequency of extreme events coupled with development of the coastline, has led to increased cliff-beach recession and to the permanent dislocation of the cliff face

Development of quantum perspectives in modern physics

Introductory undergraduate courses in classical physics stress a perspective that can be characterized as realist; from this perspective, all physical properties of a classical system can be simultaneously specified and thus determined at all future times. Such a perspective can be problematic for introductory quantum physics students, who must develop new perspectives in order to properly interpret what it means to have knowledge of quantum systems. We document this evolution in student thinking in part through pre- and post-instruction evaluations using the Colorado Learning Attitudes about Science Survey. We further characterize variations in student epistemic and ontological commitments by examining responses to two essay questions, coupled with responses to supplemental quantum attitude statements. We find that, after instruction in modern physics, many students are still exhibiting a realist perspective in contexts where a quantum-mechanical perspective is needed. We further find that this effect can be significantly influenced by instruction, where we observe variations for courses with differing learning goals. We also note that students generally do not employ either a realist or a quantum perspective in a consistent manner.Comment: 18 pages, plus references; 3 figures; 9 tables. PACS: 01.40.Fk, 03.65._

The Grizzly, April 14, 1998

The Poetry of an Outlaw • Ursinus Grad Makes it Big • Opinion: Change Ursinus, Change Yourself • Letter to the Editor • Coontz Lectures at Ursinus • Ursinus Gets Involved with Habitat for Humanity • Not Too Late to Sign-Up for Spring Service Day • The Class of \u2799 Hosts Third Annual Wingbowl • And the Winner of Mr. Ursinus 1998 Is... • The End of Lollapalooza? • Diversity Week at Ursinus • UC Women\u27s Lacrosse Team Battles for Second Place in Conference • UC Softball Sweeps Washington • Ursinus Golf Suffers 1st Defeat in Three Years • Women\u27s Tennis Team Heads in Positive Direction • UC Baseball Remains Tied for Second • Track Runs Strong Against Tough Competitionhttps://digitalcommons.ursinus.edu/grizzlynews/1419/thumbnail.jp

Agreement between the Chinese Academy of Agricultural Sciences and the International Maize and Wheat Improvement Center

Agreement between CAAS and CIMMYT signed in Beijing, China on September 25, 1997. Agreement establishes cooperation for the promotion and acceleration in research and training for the scientific improvement of wheat and maize for China and other countries set forth in nine articles