Jan Mandel/Blog/2013 Apr Jun
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April 2: Moisture data assimilation and fire danger site
- Client-server source for the web portal, configured server in virtual machine, described in Beezley-2012-DMA doi ucd
- writeup wiki
- NASA-NOAA-CSU proposal
- moisture data assimilation paper files and the draft
April 8: Interesting software technologies
April 10: PhD job market
- Why doing PhD is often a waste of time (Economist)
- Postdoc vs Tenure Track (AAAS)
- H1-B visas and tech job market (Mother Jones)
- About adjuncts
April 14: Rating of journals
- Limitations of impact factor
- Ranking of journals in Mathematics Education
- Australian ERA ranked journal list 2010 and 2012, Doug Arnold's excerpt of math journals from the 2010 list
April 15: About math department UT Arlington
- AMS Award
- Research areas
- Center for Numerical Simulation and Modeling, director our own PhD Chaoqun Liu
April 16: Data assimilation seminar: White noise on Hilbert space - finitely additive probability measures on cylinder sets
- notes
- photos
- From Chapter 6 in A.V. Balakrishnan, Applied Functional Analysis
April 21: 4DVAR by Ensemble Kalman Smoother paper completed
- posted on arXiv:1304.5271
April 23: Data assimilation seminar: Martin Vejmelka
- Use of Trend surface modelling in fuel moisture data assimilation
- trend surface analysis is a common technique in geography to separate regional and local features
- Martin's method for covariance fitting in least squares similar to EM algorithms
- Use in our paper on fuel moisture data assimilation
April 23: Dark side of open access publishing
- Jeff Beall's Predatory publishers are corrupting open access article and list of predatory publishers
- About Jeff Beal Research accepted, along with a check in China Daily
April 27: Covariance fitting in least squares
- used in the moisture data assimilation paper
- Started a draft paper from my summary of Martin's method on writeup wiki, similar to EM algorithms Dempster-1977-MLI link
- Residuals in least squares have chi-squared distribution: Least-Squares Fitting of a Straight Line poster by Malcom McMahon from Edinburg local copy
- Maximum Likelihood and Chi Square
- Regularization parameter estimation slides Mead-2009-NRA doi ucd Renaut-2010-RPE doi ucd
May 13-18: Numerical Wildfires 2013
- Institute for Scientific Study of Cargèse (IESC), University of Corsica
- poster
- View from my window and my office in Corsica
- presentations
- Corsican is somewhat similar to Romanian!
May 20-30: Institute of Computer Science, CAS, Prague
- Now on the staff here
- Project wiki
- Grant GACR 13-34856S Advanced random field methods in data assimilation for short-term weather prediction
June 6: Fire simulation server
June 6: LETKF Analysis
- photo notes files
- What is the "ideal" ensemble to compare with for exact covariance?
- What is the probability distribution of the ensemble produced by LETKF when initial data and data error are gaussian? And for exact covariance?
- See also LETKF Analysis January 7, 2013
- Some more references: Harlim-2005-LET Boquet-2011-EKF Beyou-2013-WET
- Eaton: Group Invariance Apllications in Statistics Ch. 7 Random Orthogonal Matrices, Prop. 7.1: symmetric square root orthogonalization of N(0,I) iid vectors has uniform distribution on the Orthogonal group.
- Eaton's Multivariate Statistics based on vector spaces and invariance, Ch. 6 Topological groups and invariant measures ucd
- Orthogonal_matrix#Randomization
- Infinitely dimensional Lie groups and Haar measures. But discussion and sec 62 of Halmos book.
- Tutorial on Haar measures on compact groups from Inverse Problems course at UBC
June 9: Quantum computing by D-Wave systems
- Primer
- Sample code
- Turnkey system with a 512-qubit procesor
- Networkworld slide
- Wikipedia:D-Wave Systems
- But real speedup not so good
June 10: How to access online resources when off campus
June 23-July 6: Institute of Computer Science, CAS, Prague
- Now on the staff here
- Project wiki
- Grant GACR 13-34856S Advanced random field methods in data assimilation for short-term weather prediction
See also
- Articles I frequently refer people to
- Schedule of regular meetings
- WRF-Fire commit graph
- list of all WRF-Fire pages on openwfm.org
- WRF-Fire development notes
- Conferences at openwfm.org
- NCAR events calendar
- http://math.ucdenver.edu/events