Browsing Theses & Dissertations by Title
Now showing items 3411-3430 of 4082
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Scheduling divisible tasks under production or utilization constraints
(2009)Several problems in science and engineering admit algorithmic solutions that demand a large amount of computing time. Among these applications are genotype sequencing, gene sequence comparison, protein folding, quantum ... -
Screening soil metagenomic libraries searching for degrading enzymes useful for the production of biofuels and value added chemicals
(2012)Value-added chemicals and fuels produced via the biotransformation of lignocellulosic biomass resources like crop biomass waste are necessary to reduce our dependence on the non-renewable conversion of raw materials. ... -
A screw theory approach to analyze the dynamics of parts in a vibratory bowl feeder
(2008)Vibratory bowl feeders are widely used in automatic assembly lines. The availability of good models to predict the behavior of parts inside of them is highly useful. This work presents a method that predicts the natural ... -
Sea surface temperature reconstruction (Sr/Ca) from modern and fossil Caribbean holocene corals
(2018-05)Previous studies suggest that recent global temperature rise has been driven by both anthropogenic activity and natural variability. The study of pre-historic climate change without anthropogenic influences should place ... -
Search for detrital shocked zircon at the Santa Fe impact structure, New Mexico, USA
(2018-01-29)The Santa Fe impact structure, located in northern New Mexico, is considered obscured because it is highly tectonized, deeply eroded and is located within a complex geologic setting. Shatter cones and shocked quartz have ... -
The search for experimental design with dozens of variables
(2015)Simulation models have importantly expanded the analysis capabilities in engineering designs. With larger computing power, more variables can be modeled to estimate their effect in ever-larger number of performance measures. ... -
Search for middle atmosphere waves over arecibo: lidar observations and analysis techniques
(2012)This work presents a set of different processing techniques to analyze Lidar observations in order to search for middle atmosphere waves over Arecibo (18o 21'N,66o 45’W). The processing analysis includes algorithms to ... -
Searching for the best methodology to determine lime requirement of selected Puerto Rican soils
(2010)The accuracy of six methods to estimate lime requirement was evaluated using ten acid soil series from Puerto Rico. The methods selected for the research were soil-lime incubation, buffer solutions (Shoemaker-McLean-Pratt, ... -
Seasonal shoreline changes along the north coast of Puerto Rico, from Isla de Cabras to Aguadilla
(2007)Seven beaches were studied along the north coast of Puerto Rico in order to qualitatively compare seasonal changes for each system. These are Punta Borinquen, Aguadilla, Jobos, Isabela, Camuy, Arecibo port, Mameyal, Vega ... -
Seasonality and prevalence of the fungal trichomycete Asellaria jatibonicua in the terrestrial isopod Litthorophiloscia culebrae
(2015)Los tricomicetos son microorganismos que viven mayormente en el intestino de artrópodos con mandíbula. Son considerados como un grupo ecológico compuesto de hongos (Asellariales y Harpellares) y protistas (Amoebidiales ... -
Seaweb: a web portal for the censsis seabed testbed
(2006)SeaBED is a facility developed at the NSF Center for Subsurface Sensing and Imaging Systems (CenSSIS) to study applications of hyperspectral imaging to aquatic subsurface sensing. This report describes SeaWEB, a web based ... -
Security enhancement for ieee 802.11 wireless lans
(2005)This project focuses on wireless network security and in particular, the possible encryption methods for IEEE 802.11 Wireless LANs. We explore the concept of encryption and the different encryption standards such as Data ... -
Seeking social justice: A critical understanding of reggaeton narratives
(2015)This thesis is informed by Freirean pedagogy and studies Reggaeton narratives as a part of the Puerto Rican popular culture sphere. Thus, it establishes an argument which promotes the study of Reggaeton narratives in ... -
Segmentation of underwater multispectral images with applications in the study of coral reefs
(2004)The monitoring and studying corals reefs can be used to measure the effects of contamination in the ocean. An essential preliminary step for recognizing and analyzing corals reefs in an image is image segmentation. The ... -
Segregación de polimorfismos identificados en los genes de μ-Calpaina y Calpastatina y su relación con el crecimiento corporal y características de la canal de bovinos para carne en Puerto Rico
(2007)La terneza de la carne es grandemente influenciada por la genética del animal. Durante la conversión del músculo a carne que ocurre en el período de almacenamiento, la degradación proteolítica es regulada principalmente ... -
Segregation of heat shock factor-1, heat shock protein-70 and signal transducer of activation of transcription 1 polymorphisms in normal and slick coated cattle and its potential associations with molecular breeding values and phenotypical traits
(2018-05)Heat stress (HS) in dairy cattle is one of the major problems that contribute to farmer’s financial losses in tropical and subtropical climates. Dairy cattle under HS have lower milk yields, deficiency in reproductive ... -
Seguimiento a egresados del nivel sub-graduado de la facultad de ciencias agricolas del recinto universitario de Mayagüez según su especialidad, 1990-2000.
(2007)The purpose of this study was to describe the alumni population from the College of Agricultural Sciences (CAS), Mayagüez Campus who graduate during the years of 1990 to 2000, and to evaluate their academic experience ... -
Seguimiento a los egresados del colegio de ciencias agrícolas del programa de preparación de maestros de educación agrícola durante los años del 2000-2005 certificados y desempeñándose en un puesto docente en el programa de educación agrícola del departamento de educación de Puerto Rico
(2008)The purpose of this descriptive study was to Follow – up Graduates from the Agricultural Education Teachers Preparation Program of the Agricultural Education Department of the College of Agricultural Sciences of the Mayagüez ... -
Seismic analyses and instrumentation of the Patillas earth dam
(2009-05)This thesis presents the results of seismic analyses performed for an earth dam located in Patillas, Puerto Rico. This embankment dam was built using hydraulic filling between 1912 and 1914. The dam geometry and material ...