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<h1 class="title">Samuel B. Johnson, Ph.D.</h1>
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-left" />
<col class="org-right" />
<col class="org-left" />
</colgroup>
<tbody>
<tr>
<td class="org-left">Houston, TX</td>
<td class="org-right">631.944.2665</td>
<td class="org-left"><a href="mailto:[email protected]">[email protected]</a></td>
</tr>
</tbody>
</table>
<div id="outline-container-org25ac094" class="outline-2">
<h2 id="org25ac094">Professional Summary</h2>
<div class="outline-text-2" id="text-org25ac094">
<p>
As a seasoned software developer and computational scientist, I
specialize in developing performance-critical software for
low-latency, high-performance, and high-throughput applications. With
decades of experience working on both sides of the research and software
development divide, I possess a distinctive capability to tackle complex
challenges that span these domains. My expertise is particularly
deep in numerical analysis, which is often a fundamental component
in performance critical problems. My unique blend of experience and
skills enables me to effectively address issues throughout the
research-development spectrum, ensuring comprehensive solutions.
</p>
</div>
</div>
<div id="outline-container-org61d4ffb" class="outline-2">
<h2 id="org61d4ffb">Work History</h2>
<div class="outline-text-2" id="text-org61d4ffb">
</div>
<div id="outline-container-orgb5676e6" class="outline-3">
<h3 id="orgb5676e6"><a href="https://www.quantlab.com">Quantlab</a></h3>
<div class="outline-text-3" id="text-orgb5676e6">
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-left" />
<col class="org-left" />
<col class="org-left" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-left">Title</th>
<th scope="col" class="org-left">Organization</th>
<th scope="col" class="org-left">Period</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-left"><b>Software Developer</b></td>
<td class="org-left">Core Research</td>
<td class="org-left">2024 - Present</td>
</tr>
<tr>
<td class="org-left"><b>Software Developer</b></td>
<td class="org-left">Futures Engineering/Alpha-Recon</td>
<td class="org-left">2023 - 2024</td>
</tr>
<tr>
<td class="org-left"><b>Software Developer</b></td>
<td class="org-left">Engineering Modeling and Simulation</td>
<td class="org-left">2022 - 2023</td>
</tr>
<tr>
<td class="org-left"><b>Software Developer</b></td>
<td class="org-left">HPC/Edge-Dev</td>
<td class="org-left">2021 - 2022</td>
</tr>
</tbody>
</table>
<ul class="org-ul">
<li>Played a pivotal role in integrating various machine learning
frameworks into Quantlab's cutting-edge trading/research platform,
enhancing its research-to-production functionality. Demonstrated the
platform's capabilities by developing agnostic deep learning models for
pricemovement prediction through limit order book data.</li>
<li>Overhauled the model engine of Quantlab's newest trading and
research platform, focusing on improving calculation accuracy,
consistency, and performance visibility. This enabled more
effective performance optimization and ensured the verifiability of
research calculations.</li>
<li>Authored a Python library compatible with the <code>Executor</code> protocol
from the <code>concurrent.futures</code> module, facilitating efficient data
sampling, fitting, and simulation workflows, sometimes composed of
nearly a million tasks. Optimized the model fitting process,
cutting down time to one-third of the original and achieving peak
data read rates over 600 GB/s.</li>
<li>Developed low-latency C++ feed handlers for multiple US equity
exchanges and designed adapters to integrate modern feed handlers
with legacy systems, significantly improving data processing speed
and reliability.</li>
<li>Implemented data aggregation and processing pipelines using Python
and C++. Designed and developed a unique application for the
isomorphic transformation of binary protocol specifications across
multiple proprietary DSLs and JSON, employing Racket for the
implementation.</li>
</ul>
</div>
</div>
<div id="outline-container-orgfe64507" class="outline-3">
<h3 id="orgfe64507"><a href="https://www.exxonmobil.com">ExxonMobil</a></h3>
<div class="outline-text-3" id="text-orgfe64507">
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-left" />
<col class="org-left" />
<col class="org-right" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-left">Title</th>
<th scope="col" class="org-left">Organization</th>
<th scope="col" class="org-right">Period</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-left"><b>Computational Fluids Scientist</b></td>
<td class="org-left">Upstream Integrated Solutions</td>
<td class="org-right">2020-2021</td>
</tr>
<tr>
<td class="org-left"><b>Andvanced HPC Developer</b></td>
<td class="org-left">High Performance Computing</td>
<td class="org-right">2016-2019</td>
</tr>
</tbody>
</table>
<ul class="org-ul">
<li>Engineered a C++ static reflection library enabling automatic interfacing
of C++ applications with Python and Matlab, facilitating seamless
integration and enhancing cross-platform functionality.</li>
<li>Developed a cutting-edge modeling and simulation abstraction system
alongside a declarative domain-specific language (DSL) for partial
differential equations (PDEs) and stencil computations, utilizing
<a href="https://clang.llvm.org/">Clang/LLVM</a> and <a href="https://racket-lang.org/">Racket</a>.</li>
<li>Pioneered software solutions for simulating turbidity currents,
significantly advancing understanding of process stratigraphy.</li>
<li>Created a novel vectorization strategy that resolved the contention
between the vectorization and data locality, markedly improving
computational efficiency.</li>
<li>Led comprehensive analysis and optimization of proprietary seismic
imaging and inversion software, enhancing the utilization of the
HPC systems.</li>
</ul>
</div>
</div>
<div id="outline-container-org704f92c" class="outline-3">
<h3 id="org704f92c"><a href="http://www.halliburton.com">Halliburton Energy Services, Inc</a></h3>
<div class="outline-text-3" id="text-org704f92c">
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-left" />
<col class="org-left" />
<col class="org-right" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-left">Title</th>
<th scope="col" class="org-left">Organization</th>
<th scope="col" class="org-right">Period</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-left"><b>Technical Advisor</b></td>
<td class="org-left">Advanced Computational Sciences</td>
<td class="org-right">2015</td>
</tr>
<tr>
<td class="org-left"><b>Technical Advisor</b></td>
<td class="org-left">Software Architecture & Design Team</td>
<td class="org-right">2012-2014</td>
</tr>
<tr>
<td class="org-left"><b>Principal Technical Professional</b></td>
<td class="org-left">Engineering Modeling and Simulation</td>
<td class="org-right">2010-2012</td>
</tr>
</tbody>
</table>
<ul class="org-ul">
<li>Spearheaded the design and development of a high-performance
simulation system tailored for integrating diverse, tightly coupled
physical phenomena. Introduced a modular architecture that isolated
individual model components from each other and from the system's
solver, enhancing independent module development for various
physical systems. This strategic decoupling significantly bolstered
maintainability and paved the way for the agile evolution of
projects leveraging the system.</li>
<li>Engineered sophisticated mathematical models to simulate intricate
physical systems pertinent to hydraulic fracturing and other
production enhancement techniques. Innovated algorithms for the
automated classification and index reduction of
differential-algebraic equation systems, alongside creating a
comprehensive library for automatic differentiation.</li>
<li>Implemented advanced algorithmic enhancements, parallelization
strategies, compiler parameter optimization, and fine-grained
performance tuning techniques to elevate existing models and solver
efficiencies. Achievements include dramatically reducing processing
times and memory demands by orders of magnitude, setting new
performance benchmarks.</li>
<li>Actively contributed to elevating organizational standards by
formulating and disseminating best practice guidelines for
scientific software development. These guidelines encompassed
comprehensive reviews of physical assumptions, numerical methods,
and software implementations, fostering an environment of
excellence and innovation among computational scientists.</li>
<li>Leveraged text mining and natural language processing to support
data analytics projects, enhancing the assessment of well
stimulation effectiveness. This interdisciplinary approach
facilitated the extraction of actionable insights from unstructured
data, adding value to strategic decision-making processes.</li>
</ul>
</div>
</div>
<div id="outline-container-org711a12e" class="outline-3">
<h3 id="org711a12e"><a href="http://www.cd-adapco.com/">Analysis and Design Applications Company (CD-adapco)</a></h3>
<div class="outline-text-3" id="text-org711a12e">
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-left" />
<col class="org-left" />
<col class="org-right" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-left">Title</th>
<th scope="col" class="org-left">Organization</th>
<th scope="col" class="org-right">Period</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-left"><b>Lead Engineer</b></td>
<td class="org-left">Engineering Services</td>
<td class="org-right">2007-2010</td>
</tr>
<tr>
<td class="org-left"><b>Senior Engineer</b></td>
<td class="org-left">Engineering Services</td>
<td class="org-right">2006-2007</td>
</tr>
</tbody>
</table>
<ul class="org-ul">
<li>Delivered expert consulting services in thermal and fluid analysis
across pivotal sectors, including automotive, marine, nuclear, and
oil & gas. Utilized CD-adapco's cutting-edge software and leveraged
a variety of high-performance computing clusters to address and
solve complex engineering challenges.</li>
<li>Spearheaded the integration of client-specific and third-party
software solutions with CD-adapco's advanced solvers, enhancing
tool interoperability and computational capabilities.</li>
<li>Engineered bespoke numerical models tailored to specific project
requirements using C++ and Fortran as dictated by client needs.</li>
</ul>
</div>
</div>
<div id="outline-container-org08f0350" class="outline-3">
<h3 id="org08f0350"><a href="http://ucdavis.edu/">University of California, Davis</a></h3>
<div class="outline-text-3" id="text-org08f0350">
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-left" />
<col class="org-left" />
<col class="org-right" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-left">Title</th>
<th scope="col" class="org-left">Organization</th>
<th scope="col" class="org-right">Period</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-left"><b>Postdoctoral Researcher</b></td>
<td class="org-left">Center for Computational Science and Engineering</td>
<td class="org-right">2005-2006</td>
</tr>
<tr>
<td class="org-left"><b>Lecturer</b></td>
<td class="org-left">Mechanical and Aerospace Engineering Department</td>
<td class="org-right">2005-2006</td>
</tr>
</tbody>
</table>
<ul class="org-ul">
<li>Led cutting-edge research on the numerical simulation of multiphase
fluid flows, focusing on diverse applications such as materials
processing, fire suppression, and contagion spreading. This work
pushed the boundaries of current understanding and contributed to
advancements in each application area.</li>
<li>Supervised and mentored undergraduate students in research projects
related to multiphase fluid flow simulations. Guided students
through project planning, execution, and analysis, fostering their
academic growth and research capabilities.</li>
<li>Taught introductory courses in thermodynamics and fluid dynamics,
delivering complex concepts in an accessible and engaging
manner. Developed and implemented innovative teaching methods to
enhance student understanding and interest in the subjects.</li>
</ul>
</div>
</div>
<div id="outline-container-org845cd21" class="outline-3">
<h3 id="org845cd21"><a href="http://www.lanl.gov">Los Alamos National Laboratory</a></h3>
<div class="outline-text-3" id="text-org845cd21">
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-left" />
<col class="org-left" />
<col class="org-right" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-left">Title</th>
<th scope="col" class="org-left">Organization</th>
<th scope="col" class="org-right">Period</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-left"><b>Graduate Research Assistant</b></td>
<td class="org-left">Computational and Computer Science Division</td>
<td class="org-right">2000-2001</td>
</tr>
</tbody>
</table>
<ul class="org-ul">
<li>Collaborated within a multidisciplinary team on the creation of a
comprehensive multi-physics solver, designed to accurately simulate
large-scale casting processes. This involved integrating various
physical models to predict the complex interactions during casting,
enhancing predictive capabilities and simulation fidelity.</li>
<li>Conducted innovative research aimed at eliminating grid-induced
anisotropy, ensuring more accurate and reliable simulations. This
work involved developing and testing novel algorithms to mitigate
the effects of grid orientation on simulation outcomes.</li>
<li>Cooperated in research efforts to significantly reduce numerically
induced spurious currents, particularly those arising from the
numerical treatment of fluid interfaces. This was achieved through
the formulation and application of advanced numerical methods,
enhancing the solver's ability to capture the dynamics of fluid
interfaces with high fidelity.</li>
</ul>
</div>
</div>
<div id="outline-container-org8535108" class="outline-3">
<h3 id="org8535108"><a href="https://www.mines.edu/">Colorado School of Mines</a></h3>
<div class="outline-text-3" id="text-org8535108">
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-left" />
<col class="org-left" />
<col class="org-right" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-left">Title</th>
<th scope="col" class="org-left">Organization</th>
<th scope="col" class="org-right">Period</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-left"><b>Doctoral Fellow</b></td>
<td class="org-left">Center for Combustion and Environmental Science</td>
<td class="org-right">2001-2005</td>
</tr>
<tr>
<td class="org-left"><b>Research Assistant</b></td>
<td class="org-left">Center for Combustion and Environmental Science</td>
<td class="org-right">1999-2001</td>
</tr>
</tbody>
</table>
<p>
In collaboration with the University of California, Irvine, and Idaho
National Laboratory, developed advanced analytical and numerical
models to innovate a spray-based strip casting process. This
interdisciplinary project encompassed:
</p>
<ul class="org-ul">
<li>Design and implementation of two and three-dimensional interfacial
flow solvers, incorporating complex phenomena such as heat transfer
and phase change (solidification), to accurately simulate the strip
casting process.</li>
<li>Development of an analytical model for oblique droplet impact,
enhancing understanding of droplet behavior and interactions during
the spray process.</li>
<li>Creation of a comprehensive Lagrangian spray model to predict and
analyze the distribution and behavior of spray droplets in the
strip casting environment.</li>
<li>Conducting molecular dynamics simulations to explore contact line
dynamics, providing insights into molecular-level interactions and
effects on the casting process.</li>
</ul>
<p>
This work contributed significantly to the field of materials
engineering by advancing the capabilities for simulating and
understanding the spray-based strip casting process, with potential
implications for manufacturing efficiency and enhanced material
properties.
</p>
</div>
</div>
</div>
<div id="outline-container-orga5f2734" class="outline-2">
<h2 id="orga5f2734">Computing Skills</h2>
<div class="outline-text-2" id="text-orga5f2734">
</div>
<div id="outline-container-org17ae99e" class="outline-3">
<h3 id="org17ae99e">Programming Languages</h3>
<div class="outline-text-3" id="text-org17ae99e">
<dl class="org-dl">
<dt>Native Languages</dt><dd>- C++ (modern), C, Fortran (77 and recent standards)</dd>
<dt>Functional Languages</dt><dd>Racket, Scheme (R5RS, R6RS, R7RS), Common Lisp,
Clojure, Haskell (basic working knowledge only), OCaml, Scala (basic working knowledge only)</dd>
<dt>Prototyping Languages</dt><dd>Mathematica, Julia, Python, MatLab/Octave</dd>
</dl>
</div>
</div>
<div id="outline-container-org1e59352" class="outline-3">
<h3 id="org1e59352">Machine Learning Frameworks and Libraries</h3>
<div class="outline-text-3" id="text-org1e59352">
<ul class="org-ul">
<li>PyTorch</li>
<li>TensorFlow</li>
<li>LightGBM</li>
<li>Scikit-Learn</li>
</ul>
</div>
</div>
<div id="outline-container-org4202d73" class="outline-3">
<h3 id="org4202d73">Containerization</h3>
<div class="outline-text-3" id="text-org4202d73">
<ul class="org-ul">
<li>Docker</li>
<li>Singularity (Apptainer)</li>
</ul>
</div>
</div>
<div id="outline-container-orga989901" class="outline-3">
<h3 id="orga989901">Parallel Computing Frameworks and libraries</h3>
<div class="outline-text-3" id="text-orga989901">
<ul class="org-ul">
<li>MPI</li>
<li>OpenMP</li>
<li>C++ thread support library</li>
<li>POSIX Threads</li>
<li>CUDA</li>
<li>OpenCL</li>
</ul>
</div>
</div>
<div id="outline-container-orgb13c6f0" class="outline-3">
<h3 id="orgb13c6f0">Parallel File Systems</h3>
<div class="outline-text-3" id="text-orgb13c6f0">
<ul class="org-ul">
<li>Lustre</li>
<li>GPFS</li>
<li>Vast</li>
</ul>
</div>
</div>
<div id="outline-container-org543a2d5" class="outline-3">
<h3 id="org543a2d5">Operating Systems</h3>
<div class="outline-text-3" id="text-org543a2d5">
<ul class="org-ul">
<li>Linux (many distributions)</li>
</ul>
</div>
</div>
</div>
<div id="outline-container-org4dafa1c" class="outline-2">
<h2 id="org4dafa1c">EDUCATION</h2>
<div class="outline-text-2" id="text-org4dafa1c">
</div>
<div id="outline-container-orgb594f16" class="outline-3">
<h3 id="orgb594f16">Colorado School of Mines, Golden, CO</h3>
<div class="outline-text-3" id="text-orgb594f16">
<ul class="org-ul">
<li>Degree - <b>Ph.D.</b> in Engineering Systems</li>
<li>Specialty - Thermo-fluid systems</li>
<li>Minor - Computer Science and Applied Mathematics</li>
<li>Year - 2005</li>
<li>Dissertation - Droplet Splash, Spread and Bounce</li>
<li>GPA - 4.0</li>
</ul>
</div>
</div>
<div id="outline-container-org8cf7c87" class="outline-3">
<h3 id="org8cf7c87">Colorado School of Mines, Golden, CO</h3>
<div class="outline-text-3" id="text-org8cf7c87">
<ul class="org-ul">
<li>Degree - <b>M.Sc.</b> in Engineering Systems | 2001 |</li>
<li>Specialty - Thermo-fluid systems</li>
<li>Thesis - Modeling and Numerical Simulation of Droplet Spreading and Solidification after Impingement on a Cold Substrate</li>
<li>GPA - 4.0</li>
</ul>
</div>
</div>
<div id="outline-container-org4ea5042" class="outline-3">
<h3 id="org4ea5042">Colorado School of Mines, Golden, Co</h3>
<div class="outline-text-3" id="text-org4ea5042">
<ul class="org-ul">
<li>Degree - <b>B.Sc.</b> Engineering</li>
<li>Specialty - Mechanical</li>
<li>Year - 1999</li>
<li>GPA - 3.3</li>
</ul>
</div>
</div>
</div>
<div id="outline-container-org8e214e1" class="outline-2">
<h2 id="org8e214e1">PUBLICATIONS</h2>
<div class="outline-text-2" id="text-org8e214e1">
</div>
<div id="outline-container-orgc7f7d0f" class="outline-3">
<h3 id="orgc7f7d0f">BOOK CHAPTERS AND ARTICLES</h3>
<div class="outline-text-3" id="text-orgc7f7d0f">
<ol class="org-ol">
<li>J-P Delplanque, S. B. Johnson, L. L. Shaw, and Y. Zhou, Spray Deposition and coating processes, in <span class="underline">CRC Materials Processing Handbook</span> (section on Microstructure change processes), Eds. J. R. Groza, E. J. Lavernia, and J. F. Shackelford, CRC, 2006.</li>
</ol>
</div>
</div>
<div id="outline-container-org59fdffd" class="outline-3">
<h3 id="org59fdffd">REFEREED ARCHIVAL PUBLICATIONS</h3>
<div class="outline-text-3" id="text-org59fdffd">
<ol class="org-ol">
<li>K. M. McHugh, Y. Lin, Y. Zhou, S. B. Johnson, J.-P. Delplanque, and E. J. Lavernia, <i>Microstructure Treatment of 2124 Al</i>, Materials Science and Engineering A, Vol. 447, pp. 26-34, 2008.</li>
<li>K. M. McHugh, J-P Delplanque, S. B. Johnson, E. J. Lavernia, Y. Zhou, and Y. Lin, <i>Spray Rolling Aluminum Alloy Strip</i>, Materials Science and Engineering A, Vol. 383, pp. 96- 106, 2004.</li>
</ol>
</div>
</div>
<div id="outline-container-org105466f" class="outline-3">
<h3 id="org105466f">CONFERENCE PAPERS AND PRESENTATIONS</h3>
<div class="outline-text-3" id="text-org105466f">
<ol class="org-ol">
<li>S. B. Johnson and J.-P. Delplanque, <i>Seeking an Optimum Droplet Size Distribution for Water-Mist Fire Suppression</i>, Paper #07F-44. 2007 Fall meeting of the Western States Sections of the Combustion Institute, Livermore, CA, October 16 & 17, 2007.</li>
<li>S. B. Johnson and J.-P. Delplanque, <i>Estimating Interface Curvature for Volume of Fluid Methods</i>, Euromech 479, Sheveningen, Netherlands, August 2006.</li>
<li>S. B. Johnson and J.-P. Delplanque, <i>Numerical Simulation of Parameters Influencing Droplet Rebound</i>, ILASS Americas 19th Annual Conference on Liquid Atomization and Spray Systems, Toronto, ON, Canada, May 2006.</li>
<li>B. Chacon, S. B. Johnson and J.-P. Delplanque, <i>Modeling Droplet Spreading on a Solid Substrate from First Contact through Recoil with an Energy Conservation Model</i>, ILASS Americas 19 Annual Conference on Liquid Atomization and Spray Systems, Toronto, ON, Canada, May 2006.</li>
<li>S. B. Johnson and J.-P. Delplanque, <i>Resolving Droplet Splashing with Adaptive Mesh Refinement and Accurate Curvature Estimation</i>, DFD05 58th Annual Meeting Annual Meeting of the American Physical Society Division of Fluid Dynamics, November 20-22, 2005, Chicago, IL (submitted).</li>
<li>S. B. Johnson and J.-P. Delplanque, <i>Analyzing the Results of Droplet Impact Simulation by Volume of Fluid Methods: Physics or Numerical Errors?</i> ILASS Americas 18th Annual Conference on Liquid Atomization and Spray Systems, Irvine, CA, May 2005.</li>
<li>A. B. Oliver, S. B. Johnson, J.-P. Delplanque and C. S. Lengsfeld, <i>Two Fluid VOF Simulation of Droplet Impact on a Liquid Pool</i>, ILASS Americas 18th Annual Conference on Liquid Atomization and Spray Systems, Irvine, CA, May 2005.</li>
<li>S. B. Johnson, J-P. Delplanque, Y. Lin, Y. Zhou, E. J. Lavernia and K. M. McHugh <i>Numerical simulation and experimental characterization of a binary aluminum alloy spray - application to the spray rolling process</i>, in EPD Congress 2005 - Proceedings of Sessions and Symposia Sponsored by the Extraction and Processing Division of The Minerals, Metals and Materials Society. 2005 TMS Annual Meeting. San Francisco, CA, USA. 13-17 Feb. 2005., pp. 509-517 (2005).</li>
<li>K. M. McHugh, Y. Lin, Y. Zhou, E. J. Lavernia, J.-P. Delplanque and S. B. Johnson, <i>Spray rolling aluminum strip for transportation applications</i>, in MPMD Sixth Global Innovations Proceedings. Trends in Materials and Manufacturing Technologies for Transportation Industries and Powder Metallurgy Research and Development in the Transportation Industry. Proceedings of Symposium Sponsored by the Materials Processing & Manufacturing Division of TMS. 2005 TMS Annual Meeting. San Francisco, CA, USA. 13-17 Feb. 2005.</li>
<li>S. B. Johnson, J.-P. Delplanque and M. Bussmann, <i>Modeling and Simulation of Metal Droplet Impact, Spreading, and Solidification on a Solid Substrate</i>, Euromech 450: Studies on Splashes a century after A. M. Worthington, Marseille, France, October 27-29, 2004.</li>
<li>S. B. Johnson, S. J. Lewis and J.-P. Delplanque, <i>Droplet-Resolved Dilute Spray Evaporation Model</i>, 2004 Heat Transfer/Fluids Engineering Summer Conference, Charlotte, North Carolina, USA, July 11-15, 2004.</li>
<li>K. M. McHugh, E. J. Lavernia, Y. Zhou, Y. Line, J.-P. Delplanque and S. B. Johnson, <i>Aluminum Strip Processing by Spray Rolling</i>, Proceedings of the Second International Conference on Spray Deposition and Melt Atomization and Fifth International Conference on Spray Forming, K. Bauckhage et al. Eds., Bremen, Germany, June 22-25, Vol. 2, pp. 6.27-6.38, 2003.</li>
<li>Y. Lin, Y. Zhou, S. B. Johnson, J.-P. Delplanque, K. M. McHugh and E. J. Lavernia, <i>On the Selection of Processing Parameters during Spray Rolling Process</i>, Proceedings of the Second International Conference on Spray Deposition and Melt Atomization and Fifth International Conference on Spray Forming, K. Bauckhage et al. Eds., Bremen, Germany, June 22-25, Vol. 2, pp. 7.17-7.30, 2003.</li>
<li>S. B. Johnson, J.-P. Delplanque, Y. Lin, Y. Zhou, E. J. Lavernia and K. M. McHugh, <i>Assisting Spray Rolling Process Development and Scale-up with Modeling and Numerical Simulation</i>, Proceedings of the Second International Conference on Spray Deposition and Melt Atomization and Fifth International Conference on Spray Forming, K. Bauckhage et al. Eds., Bremen, Germany, June 22-25, Vol. 2, pp. 6.3-6.14, 2003.</li>
<li>S. B. Johnson, J.-P. Delplanque, E. J. Lavernia, Y. Lin, Y. Zhou and K. M. McHugh, <i>Spray Rolling: A Novel Technique for the Production of Aluminum Strip</i>, Proceedings of ILASS Americas, 16th Annual Conference on Liquid Atomization and Spray Systems, Monterey, California, May 18-21, 2003.</li>
<li>K. M. McHugh, E. J. Lavernia, Y. Zhou, Y. Lin, J.-P. Delplanque and S. B. Johnson, <i>Spray Rolling Aluminum Strip–Process Development and Strip Properties</i>, Symposium on Hot Deformation of Aluminum Alloys, 132nd Annual Meeting & Exhibition of TMS, San Diego, California, March 2-6, 2003.</li>
<li>S. B. Johnson, J.-P. Delplanque, E. J. Lavernia, Y. Zhou, Y. Lin and K. M. McHugh, <i>Spray Rolling Aluminum Strip: Process Modeling and Parametric Studies</i>, Symposium on Hot Deformation of Aluminum Alloys, 132nd Annual Meeting & Exhibition of TMS, San Diego, California, March 2-6, 2003.</li>
<li>S. B. Johnson and J.-P. Delplanque, <i>Simulation Needs in the Modeling of Droplet-Based Processes: The case of spray-rolling</i>, Presented at the Los Alamos National Laboratory Telluride Workshop, Santa Fe, NM, January 21-23, 2003.
<ol class="org-ol">
<li>J.-P. Delplanque and S. B. Johnson, Y. Lin, Y. Zhou, N. Yang, K. M. McHugh and E. J. Lavernia, <i>Using CFD Simulations to Improve Spray-Based Materials Processes</i>, 2002 International Conference on Process Modeling in Powder Metallurgy & Particulate Materials, October 28-29, 2002, Newport Beach, California .</li>
</ol></li>
<li>S. B. Johnson, Y. Lin, Y. Zhou, J.-P. Delplanque, K. M. McHugh, and E. J. Lavernia, <i>Modeling and Simulation of the Spray Rolling Process</i>, 2002 International Conference on Process Modeling in Powder Metallurgy & Particulate Materials, October 28-29, 2002, Newport Beach, California.</li>
<li>S. B. Johnson and J.-P. Delplanque, <i>Modeling the Spray-Rolling Process: from droplets to spray</i>, 39th Annual Technical Meeting of the Society of Engineering Science, Penn State University, PA, October 13-16th, 2002.</li>
<li>S. B. Johnson and J.-P. Delplanque, <i>Micro-Scale Aspects of Spray Deposition Processing: A semi-Analytical Model for Droplet Spreading and Solidification at Off-Normal Impact Angles</i>, 2000 ASME IMECE, November 5-10, 2000 Orlando, FL, session on Transport Phenomena in Spray and Coating Processes HTD-Vol. 366-3, Proceedings of the ASME Heat Transfer Division, Vol. 3, pp. 381-271-388, ASME 2000.</li>
</ol>
</div>
</div>
<div id="outline-container-orgf80b475" class="outline-3">
<h3 id="orgf80b475">Other Publications</h3>
<div class="outline-text-3" id="text-orgf80b475">
<ol class="org-ol">
<li>S. B. Johnson, <span class="underline">Droplet Spread, Rebound and Splash</span>, Ph. D. Dissertation, Colorado School of Mines, Engineering Division, 2005.</li>
<li>S. B. Johnson, <span class="underline">Modeling and Numerical Simulation of Droplet Spreading and Solidification after Impinging on a Solid Substrate</span>, Master of Science Thesis, Colorado School of Mines, Engineering Division, 2005.</li>
</ol>
</div>
</div>
<div id="outline-container-orgea78fe3" class="outline-3">
<h3 id="orgea78fe3">Patents</h3>
<div class="outline-text-3" id="text-orgea78fe3">
<ol class="org-ol">
<li>S. Madasu and Samuel B. Johnson. <i>Evaluating Fluid Flow in a Wellbore</i>. Halliburton Energy Services, Inc., assignee. Patent US 20130346035 A1. 26 Dec. 2013.</li>
</ol>
</div>
</div>
<div id="outline-container-org74f85bc" class="outline-3">
<h3 id="org74f85bc">Pending Patent Applications</h3>
<div class="outline-text-3" id="text-org74f85bc">
<ol class="org-ol">
<li>S. B. Johnson, A. Lin, D. M. Copeland. <i>Preconditioning a Global Model of a Subterranean Region</i>. Halliburton Energy Services, Inc., assignee. Application 14/144/113, 30 Dec. 2013.</li>
<li>S. B. Johnson, A. Lin, D. M. Copeland. <i>Preconditioning Distinct Subsystem Models in a Subterranean Region Model</i>, Halliburton Energy Services, Inc., assignee. Application 14/144,129, 30 Dec. 2013.</li>
<li>J. Bai, S. B. Johnson, H.G. Walters. <i>Modeling Subterranean Rock Blocks In An Injection Treatment Simulation</i>, Halliburton Energy Services, Inc., assignee. Application 13/757,306, 1 Feb. 2013.</li>
<li>S. B. Johnson, H. G. Walters. <i>Simulating an Injection Treatment of a Subterranean Zone</i>, Halliburton Energy Services, Inc., assignee. Application 13/757,052, 1 Feb. 2013.</li>
</ol>
</div>
</div>
</div>
</div>
<div id="postamble" class="status">
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