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Physical Sciences and Mathematics Commons

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Full-Text Articles in Physical Sciences and Mathematics

An Analysis Of Breast Cancer Metastasis, Jennifer Lee Gildner Dec 2011

An Analysis Of Breast Cancer Metastasis, Jennifer Lee Gildner

Statistics

The main objective of this paper is to evaluate possible socio-economic status, clinical, and treatment associations with the occurrence of distant metastasis in Stage I – III breast cancer patients. After analysis in a logistic regression model, four variables were found to be significant with occurrence of distant metastases. These variables were: education, disease group (Triple-negative, Her2Neu-positive and Luminal A), stage at diagnosis, and concordance to chemotherapy based on the NCCN guidelines. Patients without a college degree were found to be more likely to develop distant metastasis than those with a college degree (OR = 2.46 95% CI 1.44 – …


Manova: Type I Error Rate Analysis, Christopher Dau Wei Ling Aug 2011

Manova: Type I Error Rate Analysis, Christopher Dau Wei Ling

Statistics

No abstract provided.


Music And Radio Preferences On The Cal Poly Campus, Rory Bloch Jun 2011

Music And Radio Preferences On The Cal Poly Campus, Rory Bloch

Statistics

No abstract provided.


Using Survival Analysis Methods To Study Santa Barbara County Divorces, Joel Vazquez Jun 2011

Using Survival Analysis Methods To Study Santa Barbara County Divorces, Joel Vazquez

Statistics

No abstract provided.


Dietary Patterns In Relation To Sleep And Stress In Cal Poly Freshman, Emily J. Conklin, Jongyoon Lee Jun 2011

Dietary Patterns In Relation To Sleep And Stress In Cal Poly Freshman, Emily J. Conklin, Jongyoon Lee

Statistics

The Cal Poly FLASH study is a research project that was developed to assess overall health of college students. Beginning in Fall 2009, data have been collected longitudinally via online surveys and physical assessments on Cal Poly freshmen. Responses from 1520 students from Fall 2009 were used to investigate whether stress and sleeping habits are related to dietary patterns among Cal Poly students.

Factor analysis was used to categorize 33 food frequency variables into two categories – junk food and healthy food. Then, stepwise selection in a general linear model was conducted to identify lifestyle and demographic variables associated with …


An Exploration Of Non-Detects In Environmental Data, Juliana Fajardo Jun 2011

An Exploration Of Non-Detects In Environmental Data, Juliana Fajardo

Statistics

No abstract provided.


Analysis Of Roms Estimated Posterior Error Utilizing 4dvar Data Assimilation, Joseph Patrick Horton Jun 2011

Analysis Of Roms Estimated Posterior Error Utilizing 4dvar Data Assimilation, Joseph Patrick Horton

Mathematics

The appropriateness of the approximate error calculated by the Regional Ocean Modeling System (ROMS) is analyzed using Four-Dimensional Data Assimilation (4DVAR) performed on a numerical model of the San Luis Obispo Bay. An effective method of sampling data to minimize the actual error associated with the assimilated numerical model is explored by using different data sampling methods. An idealized state of the SLO bay region ("Real Run") is created to be used as the real ocean, then a numerical model of this region is created approximating this Real Run; this is known as the "Simulated State". By taking samples from …


Analysis Of The 2008 Flare Of Markarian 421 Flare With Veritas, Casey Allard Jun 2011

Analysis Of The 2008 Flare Of Markarian 421 Flare With Veritas, Casey Allard

Physics

A theoretical light curve model is fit to an observed short term flare of Markarian (Mrk) 421 in the very high energy spectrum. The flare is characterized by its measured light curve from the Very Energetic Radiation Imaging telescope Array System (VERITAS). The flare we analyzed occurred in May 2008. We successfully fit a theoretical model to the Mrk 421 data light curve. The data appears to agree with the Wagner [1] and Salvati [2] models. These models appear to fit both broad and sharp flaring regions found in the measured light curve. Furthermore the Wagner model is used to …