Digital Commons Network^™

Autonomous Vehicle Navigation: A Comparative Study Of Classical Logic And Neural Network Technique, Javier Alejandro Flores

Open Access Theses & Dissertations

Today is an era in which humans need the help of automated machines to facilitate their hectic lives. Over the past few decades, robotics has been one of the most researched areas in the world. One area of this research is obstacle avoidance for autonomous vehicles. In order to avoid an obstacle, the system may include two important characteristics: obstacle detection and avoidance control. In this Thesis a classical logic system and artificial neural network approach is presented. With the help of an Integrated Development Environment, a virtual robot was able to negotiate a maze and avoid obstacles according to …

No One Over Your Bones, Veronica E. Guajardo

Open Access Theses & Dissertations

This Thesis, a collection of poems, is sometimes in English, some all in Spanish,and others poems are bilingual. Others still use slang, Calo, and other Pachuquismos. This collection of poetry is divided into 4 section, with an introduction that prefaces the collection by providing an explanation of the origins of the work, the influences of the poet, etc., all while proposing provocative questions such as, what is an American Poem, for example. The Thesis poems delve into issues of immigration, migration, memory, love and violence, masculiniity and feminity, survival,and of course, language. Lnaguage is central,and music also is important to …

Spectroscopic Characterizations Of Organic/Inorganic Nanocomposites, Jayesh Rasikalal Govani

Open Access Theses & Dissertations

Inorganic potassium dihydrogen phosphate (KDP) is widely known for its value as a nonlinear optical material. In this study, pure and l-arginine-doped KDP single crystals were grown by the slow solvent evaporation technique and further subjected to infrared absorption and Raman studies for the confirmation of chemical group functionalization and possible bonding between the organic and inorganic materials. The appearance in the infrared absorption spectra of additional vibrational lines, which mostly originate from disturbed N-H, C-H, and C-N bonds of the l-arginine-doped salt, confirm the interaction between KDP and the organic material. This affirmation is supported by more evidence from …

Bridging The Digital Divide: Infusing Digital Storytelling To Improve Literacy Instruction Among Students In Rural Bhutan, Khendum Gyabak

Open Access Theses & Dissertations

The purpose of this qualitative study is to examine the digital divide among public school students in rural Bhutan. The study presents several broad themes relevant to technological innovation, integration of technology initiatives into educational practices and social structures in underdeveloped and developing countries. The aim of this study is to address the possibility of integrating digital storytelling and through the use of these new literacy practices, understand whether technology education could be a sustainable process for empowerment among public school students in rural Bhutan. This study should be of interest to educators and administrators concerned about the future development …

Riding The Borderlands: The Negotiation Of Social And Cultural Boundaries For Rio Grande Valley And Southwestern Motorcycling Groups, 1900-2000, Gary L. Kieffner

Open Access Theses & Dissertations

This Dissertation presents an analysis and interpretation of particular aspects of the social, cultural, and ideological history of motorcycling in the US-Mexican Borderlands from 1900 to 2000. It is based on interviews with historical correspondents, archival and other documents as well as thirty years of participant reflection during which the author was immersed in biker culture. The motorcycle served as a vehicle for personal and group identity, resistance, and liberation. Issues related to identity, gender, race, marginalization and resistance, imagery, and rhetoric become clearer when considering the perspective of riders. This study surveys interactive processes that occurred between historic motorcyclists, …

Characterization Of The Behavioral And Neurochemical Effects Of Nicotine Withdrawal In Adolescent And Adult Rats., Luis Alberto Natividad

Open Access Theses & Dissertations

Previous studies have demonstrated that the behavioral effects of nicotine withdrawal are lower in adolescent versus adult rats. However, the neurochemical mechanisms that mediate these developmental differences are presently unclear. Much work has shown that nicotine reward is mediated via enhanced dopamine neurotransmission in the mesolimbic pathway which originates in the ventral tegmental area (VTA) and terminates in several forebrain structures including the nucleus accumbens (NAcc). More recently, studies have shown that nicotine withdrawal produces a decrease in NAcc dopamine transmission, an effect that is believed to serve as a neurochemical marker of withdrawal in adult rodents. The goal of …

El Libro De Los Infiernos, José M. Palacios

Open Access Theses & Dissertations

El libro de los infiernos es una colección de cuentos que se puede leer como una novela. En el texto se tejen elementos de La divina commedia de Dante, La ciudad de Dios de San Agustín, la novela gráfica, la filosofía de Nietzsche, Pitágoras y Deleuze, la geometría hiperbólica de Lovachevski, y algunos otros elementos.

Implication For The Role Of Leptin-Induced Signaling As A Negative Regulator Of Dendritic Cell Function, Oscar Ramirez

Open Access Theses & Dissertations

The incidence of obesity among the distinct world populations has become an ever growing concern. Central to the regulation of obesity is the adipocyte-derived hormone, and in more recent years cytokine, leptin. Leptin plays a central role in the maintenance of food consumption as well as the efficient use of peripheral energy stores. Leptin exerts its physiological role in energy homeostasis by regulating the expression of orexigenic peptides in the central nervous system. However, recent research has implicated leptin in other physiological roles including those of the immune system. As a pleiotropic cytokine, the absence of leptin has been shown …

Revision Of The Ant Genus Procryptocerus (Hymenoptera: Formicidae: Myrmicinae: Cephalotini), Francisco Serna

Open Access Theses & Dissertations

Ants of the genus Procryptocerus (Hymenoptera: Formicidae) are characterized by the protrusion of the clypeus forming a broad nasus and antennal scrobes over the eyes. The toruli are located directly posterior to the flanks of the nasus opposite to each other. The vertex is deflexed in most species. I present an in-group comparison of the external morphology focusing on the workers. I also present a general morphology for gynes and males. I analize previously mentioned characters as well as new ones, and clarify their character states in different species. For the metasoma I propose a new system of ant metasomal …

Farsas De La Memoria Y Otros Relatos, César Silva-Santisteban

Open Access Theses & Dissertations

Relatos que abarcan desde pequeñas narraciones surrealistas hasta cuentos realistas y cuentos fantásticos.

Mexican-American Concepts On Gender And Identity: A Teacher's Perspective In A Fifth Grade Classroom, Cynthia Soto

Open Access Theses & Dissertations

This study primarily focuses on fifth-grade Mexican-American students and the factors that influence their views on gender and identity. Gender perspectives in the classroom have the potential to improve instruction and can positively affect students' motivations to learn. Literature can also influence students' gender perceptions and also contribute to gender bias in the classroom. This study works toward creating a non-biased learning environment.

Zinc And Copper Isotopes As Tracers Of Anthropogenic Contamination In A Sediment Core From An Urban Lake, Anita Thapalia

Open Access Theses & Dissertations

Concentration data alone are often insufficient to resolve metal sources. This study applies stable Zn and Cu isotopes to fingerprint and track the sources of these metals in a sediment core from Lake Ballinger near Seattle, Washington, USA. The base of the Lake Ballinger core pre-dates settlement in the region, while the upper sections record the impact of atmospheric emissions from the nearby Tacoma smelter, as well as Cu and Zn inputs from urban sources. δ⁶⁶Zn and δ⁶⁵Cu varied by 0.42 / and 0.29 /, respectively, over the >300 year core record. Isotopic changes were correlated …

Exploring Poly(Ethylene Glycol) As A Suitable Material For Peripheral Nerve Regeneration Scaffolds Manufactured By Stereolithography, Nubia Zuverza

Open Access Theses & Dissertations

One of the challenges in tissue engineering is to have spatial and temporal control over the biological elements within a scaffold used to guide regeneration for example of transected nerves. Some of the physical and chemical characteristics to regulate include incorporation of bioactive domains and release of chemical signals. This study presents the use of stereolithography (SL) to incorporate localized domains for cell adhesion in addition to include releasable nerve growth factor (NGF) in the process of building poly(ethylene glycol)diacrylate (PEGda) hydrogel scaffolds. Besides providing sites for cell attachment, an ideal nerve guidance conduit (NGC) should be able to release …

Beyond Aica Riboside: In Search Of New Specific Amp-Activated Protein Kinase Activators, Bruno Guigas, Kei Sakamoto, Nellie Taleux, Sara M. Reyna, Nicolas Musi, Benoit Viollet, Louis Hue

School of Medicine Publications

5-Aminoimidazole-4-carboxamide-1-beta-D-ribofuranoside (AICA riboside) has been extensively used in vitro and in vivo to activate the AMP-activated protein kinase (AMPK), a metabolic sensor involved in both cellular and whole body energy homeostasis. However, it has been recently highlighted that AICA riboside also exerts AMPK-independent effects, mainly on AMP-regulated enzymes and mitochondrial oxidative phosphorylation (OXPHOS), leading to the conclusion that new compounds with reduced off target effects are needed to specifically activate AMPK. Here, we review recent findings on newly discovered AMPK activators, notably on A-769662, a nonnucleoside compound from the thienopyridone family. We also report that A-769662 is able to activate …

Concert Recording 2009-03-27, Emily Nelson, Kristin Harwell, James Greeson

Concert Recordings & Programs

Orange dawn / Ian Clarke -- Sonatine for flute and piano / Henri Dutilleux -- L'aube enchantee / Ravi Shankar -- L'oiseau blesse / Denis Gougeon -- Renaissance concerto / Lukas Foss

Ministering With Millennials: A Complete Report On The 180 Symposium, Roger Dudley, Allen Walshe

All Books

Millennials in your community range in age from 15 to 32. The youngest are in the early years of high school and the oldest may or may not be married with families. One important Millennial generation attribute is delayed commitment. Ministering with Millennials starts with a complete overview of this interesting and important generation.

Papers presented at the 180 Symposium covered five major ministry themes:

• The Search for Identity
• Relationships are the Key
• Spirituality is Essential
• There is a Call for Leadership
• A Theme of Service

Among the 25 papers included in Ministering with Millennials, you will find powerful …