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Latest revision as of 06:25, 12 June 2015
Contents
- 1 Dongwon 'DW' Han
- 2 Simulation of Ocean Motions using Kinematic Model
- 3 Research Journal
Dongwon 'DW' Han
I attend University of Massachusetts at Amherst. I am majoring in mathematics with minors in physics and computer science.
Simulation of Ocean Motions using Kinematic Model
Goals and Milestones
Week1 : Familiarize myself with the project. Do background research
Week2 : Study kinematic model and previous simulations.
Week3-4 : Perform twin experiments to check the validity of the kinematic model.
Week5-7 : Implement data assimilation methods into the kinematic model
Week8-9 : Quantify error in new model
Week10 : Wrap up and prepare for a presentation
Research Journal
Week One [05/30 - 06/01]
Monday
- No work: Holiday
Tuesday
- Orientation
- Campus Tour
- Pre-Survey
Wednesday
- Library tour
- Meeting with Dr. Elaine Spiller
- research object
- tentative timeline
- reading assignment
- start reading chapter 6 in Numerical Analysis by Timothy Sauer
Thursday
- Talk: Good Research Practices
- Still reading chapter 6 in Numerical Analysis
- wrote matlab scripts for ODE solvers : Euler, Trapzoid, and RK4
- Read Kinematic Representation of the velocity field
- Start reading a note, The Rotating Can Problem by Larry Pratt.
Friday
- Start reading A Bayesian tutorial for data assimilation by Berlinear et al.
- Start reading a lecture note on Brief introduction to Probability and Simulation.
- Had a brief meeting with Dr. Spiller
Week Two [06/04 - 06/08]
Monday
- Read first few chapters of Data Assimilation: The Ensemble Kalman Filter by Evensen
- Read few chapters of Simulation by Ross
- Discussed about Data Assimilation with Dr. Spiller
Tuesday
- Read chapter 4 of Data Assimilation: The Ensemble Kalman Filter by Evensen
- Made few test runs of Kinematic Model with different initial conditions.
Wednesday
- More test runs and data analysis.
- Wrote few matlab scripts to help analyzing the data
Thursday
- More data analysis
- Modified the original code, such that it can take any initial state as an input
- Wrote more matlab scripts
- Working lunch
- Meeting with Dr. Spiller
- presented what I learned from simulations so far
- made a plan for next two weeks
Friday
- Started to read A Framework for Validation of Computer Models by Sacks et al.
- Started to analyze the kinemetic using the framework above
- Wrote a script for twin experiment
Week Three [06/11 - 06/15]
Monday
- Read first nine chapters of MATLAB Primer, Eighth Edition by Timothy A. Davis
- Trying to rewrite code the original Kinemetic model code in oop style.
- Note: Dr. Spiller is in conferences for next two weeks
Tuesday
- Talk: Good Presentation, Good Technical Writing and the Difference Between the Two
- Still rewriting the code
Wednesday
- finish writing main code
- need to verify whether the outcome from new code is consistent with that of original code.
- need to debug plotting functions
Thursday
- Working lunch
- Debugging the code [Current outcome is not consistent with that of original code]
- Fixed plotting functions
Friday
- Still debugging the code
- I cannot pin down the source of the error. The error must occur in Particle Filter/Bootstrap step.
- It might be better idea to abandon new code.
Week Four [06/18 - 06/22]
Monday
- Finished debugging the code.
- Wrote a script for twin experiment
- Wrote more matlab functions for data analysis
Tuesday
- Wrote a script for sensitivity analysis
- Added more functions for data analysis
Wednesday
- LaTeX Introduction
- Read A Framework for Validation of Computer Models by Sacks et al.
- Organizing data
- Started to prepare for mini-presentation.
Thursday
- Working lunch
- Trying to understand A Framework for Validation of Computer Models by Sacks et al.
- Made a few images for mini-presentation
Friday
- Brainstorming about error quantification
- Read about Bayesian data analysis
Week Five [06/25 - 06/29]
Monday
- Modifying Matlab scripts
- Preparing for presentation
- Meeting with Dr. Spiller
Tuesday
- mini-presentation
- Read about Bayesian data analysis
Wednesday
- Read first four chapters of Principle of Statistics by Blumer
- Lost most of matlab codes( Luckily, I had a backup)
- Recovering data
Thursday
- Meeting with Dr. Spiller
- More matlab coding
- Analyzed new trajectory data
Friday
- Read few chapters of Principle of Statistics by Blumer
Week Six [07/02 - 07/06]
Monday
- Studied about Bayesian Interference
- Studied about Data Assimilation
Tuesday
- Talk: What makes a good poster
- Studied about Bayesian Interference
Wednesday
- Holiday - No Work
Thursday
- Working Lunch
- Read few chapters of Principle of Statistics by Blumer
Friday
- Start writing the paper
- Organized notes, data, and graphics
- Meeting with Dr. Spiller
Week Seven [07/09 - 07/13]
Monday
- Meeting with Dr. Spiller
- New Task is given
- Reading is assigned.
- Watched a lecture,Introduction To Bayesian Inference part 1, by Christopher Bishop
Tuesday
- Watched a lecture,Introduction To Bayesian Inference part 2, by Christopher Bishop
- Watched a lecture,Markov Chain Monte Carlo, by Iain Murray
Wednesday
- Worked on outline of the paper
- Organized data and notes
Thursday
- Working Lunch
- Worked on the paper
- Studied about Gaussian Procedures.
Friday
- Learned about Random Function methods
- Started to implement Random Function method.
Week Eight [07/16 - 07/20]
Monday
- Worked on implementation of Random Function method.
Tuesday
- Couldn't log into MSCS server (No computer access..)
- Worked on my paper
Wednesday
- Doesn't have an access to MSCS server again!
- Server was working again in the afternoon.
- Worked on paper
- Implemented Randome Function method
Thursday
- Working lunch.
- Updated 4th Runge Kunta order
- Generated images for Dr. Spiller
- Spent most time debugging and writing test cases.
Friday
- Cleaned codes
- Worked on poster
Week Nine [07/23 - 07/27]
Monday
- Debugged Matlab codes
- Meeting with Dr. Spiller
Tuesday
- Prepared poster
Wednesday
- Played with Random Function
- Tried to fix the boundary problem
Thursday
- Meeting with Dr. Spiller
- Implemented boundary sampling routine
- still has the boundary problem
Friday
- Implemented weighted averaging
- boundary problem is fixed...
- simulation is broken near the wall
- Sent Dr. Spiller the code
Week Ten [07/30 - 08/03]
Monday
- Still working on the boundary problem
- Organized data for paper and presentation
Tuesday
- Poster Session
- Worked on presentation
Wednesday
- Worked on presentation
Thursday
- formal presentation
- Worked on paper
Friday
- Paper is done
