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Articles 1 - 8 of 8
Full-Text Articles in Physical Sciences and Mathematics
Using Monte Carlo Simulation To Derive Electron Energy Distribution Functions In Argon Plasma, Ivan Sepulveda
Using Monte Carlo Simulation To Derive Electron Energy Distribution Functions In Argon Plasma, Ivan Sepulveda
Creative Activity and Research Day - CARD
A two-dimensional Monte-Carlo simulation is used to obtain distribution of electron energies inside low temperature argon plasma. The simulation written using a python script propagates an electron inside plasma by checking whether an electron collides with an argon atom and checking whether an elastic or inelastic collision occurred. Low temperature plasmas are commonly used for plasma etching in the semiconductor and medical fields.
Cerebral Necrosis Research With Machine Learning Techniques, Sangyu Shen
Cerebral Necrosis Research With Machine Learning Techniques, Sangyu Shen
Creative Activity and Research Day - CARD
Cerebral necrosis after radiotherapy for patients with brain metastases is being recognized as a problem more common than previously estimated. To better understand the onset of necrosis and reduce its occurrence, we studied the relationships between features of patients and necrosis onset with machine learning techniques.
Forecasting Smart Meter Energy Usage Using Distributed Systems And Machine Learning, Feiran Ji, Chris Dong, Lingzhi Du, Zizhen Song, Yuedi Zheng, Paul Intrevado
Forecasting Smart Meter Energy Usage Using Distributed Systems And Machine Learning, Feiran Ji, Chris Dong, Lingzhi Du, Zizhen Song, Yuedi Zheng, Paul Intrevado
Creative Activity and Research Day - CARD
In this research, we explore the technical and computational merits of a machine learning algorithm on a large data set, employing distributed systems. Using 167 million(10 GB) energy consumption observations collected by smart meters from residential consumers in London, England, we predict future residential energy consumption using a Random Forest machine learning algorithm. Distributed systems such as AWS S3 and EMR, MongoDB and Apache Spark are used. Computational times and predictive accuracy are evaluated. We conclude that there are significant computational advantages to using distributed systems when applying machine learning algorithms on large-scale data. We also observe that distributed systems …
Ligand Substitution Of Ruthenium (Ii) Complexes That Elicit Physical And Chemical Changes, Dakota Tan, Megan Farley, Jeff Curtis, John Hendrix
Ligand Substitution Of Ruthenium (Ii) Complexes That Elicit Physical And Chemical Changes, Dakota Tan, Megan Farley, Jeff Curtis, John Hendrix
Creative Activity and Research Day - CARD
Over the last few years the exploration into ruthenium compounds and the field of coordination chemistry have grown. Ruthenium (II) and ruthenium (III) carry oxidation states that accommodate six-coordinated octahedral configurations in which axial attached ligands can determine chemical and steric properties. UV/Vis spectrometry, H1 NMR, and electrochemical voltammetry will be used to gather data from previously synthesized ruthenium (II) coordination complexes. We hope that by substituting various R groups on three different locations of our ruthenium (II) complex we will be able to control for many physical and chemical changes. After collecting the data from all three complimentary techniques …
Examining The Bacterial Methionine Transporter Utilizing Soluble Lipid Bilayer Systems, Gabrielle Isabelle Servito, Michael Winslow, Dennis Hicks, Lyle Patrick Ureta
Examining The Bacterial Methionine Transporter Utilizing Soluble Lipid Bilayer Systems, Gabrielle Isabelle Servito, Michael Winslow, Dennis Hicks, Lyle Patrick Ureta
Creative Activity and Research Day - CARD
The phospholipid bilayer present in both eukaryotes and prokaryotes regulates the cell’s acquisition of nutrients and excretion of waste. Studies on the complex components of the lipid bilayer have paved the way for learning about the selective permeability of the membrane. It is of great interest to understand how materials are being transported through transmembrane proteins in relation to the electrochemical gradient. Investigation into the mechanistic properties of these transport proteins, particularly ATP-binding cassettes (ABC) transporters, can clarify how substrates are being transported via the binding and hydrolysis of adenosine triphosphate (ATP). The study of ABC transporters is significant in …
An Optimization Approach To Automate The Generation Of Radiotherapy Treatment Plans, Qian Li
An Optimization Approach To Automate The Generation Of Radiotherapy Treatment Plans, Qian Li
Creative Activity and Research Day - CARD
The main goal of radiotherapy is to deliver a specified dose of radiation directly to the tumor while minimizing radiation damage to healthy tissues. Currently, the treatment plan is being developed by professional planners using a commercial treatment planning system. In this treatment planning system, the planner modifies the objectives and weights of the objectives until an ideal combination of doses is achieved. This arbitrary process can cost a few hours or a day to finish. My research aims to automate the generation of the plans by implementing an optimization algorithm on top of the treatment planning system using gradient …
Improving Habitat Restoration For Native Pollinators In San Francisco, Tyrha Delger
Improving Habitat Restoration For Native Pollinators In San Francisco, Tyrha Delger
Creative Activity and Research Day - CARD
By looking at how these three species are conserved inside and outside of San Francisco, how an urban environment might affect habitat conservation, and lessons learned from other cities’ restoration projects, we can improve urban habitat conservation projects.
Plant Biodiversity In The Face Of Climate Change: What Will Become Of Coastal Endemic Species?, Nila Le
Plant Biodiversity In The Face Of Climate Change: What Will Become Of Coastal Endemic Species?, Nila Le
Creative Activity and Research Day - CARD
How will longitudinally constrained coastal flora fare in the face of rapid anthropogenic climate change and disturbance? Coastal communities pose a unique problem for climate change and its associated risks. Species that are concentrated along the coast are naturally vulnerable to the influence of harsh abiotic ecology, such as coastal erosion and high salt concentrations. In addition, analogous to montane species-habitat interactions, coastal communities may be “pushed” off the coast edge as a result of tracking preferred climate in the face of climate variability and sea level rise. This can be problematic for species that cannot disperse quickly enough to …