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Phylogeographic Analyses Of Obligate And Facultative Cave Crayfish Species On The Cumberland Plateau Of The Southern Appalachians, Jennifer Elizabeth Buhay Jul 2006

Phylogeographic Analyses Of Obligate And Facultative Cave Crayfish Species On The Cumberland Plateau Of The Southern Appalachians, Jennifer Elizabeth Buhay

Theses and Dissertations

Cave systems and their unique biota are widely viewed as highly endangered, yet very little is known about basic life history, ecology, distributions, habitat requirements, and evolutionary relationships of subterranean species. The crux of the problem in cave studies is the assumption that traditionally defined morpho-species represent distinct evolutionary lineages. Convergence is exhibited in the morphologies of many animal groups, vertebrate and invertebrate, which leads to confusion in diagnosing species' boundaries, geographic distributions, gene flow routes, and imperilment. This dissertation research includes phylogeographic analyses of freshwater cave-dwelling crayfishes in the Southern Appalachians, a global hotspot of subterranean biodiversity. By examining …

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Reading And Writing In Science: How Do The Reform Documents Attend To The Fundamental Sense Of Science Literacy?, Kimberly J. Frandsen Jul 2006

Reading And Writing In Science: How Do The Reform Documents Attend To The Fundamental Sense Of Science Literacy?, Kimberly J. Frandsen

Theses and Dissertations

The purpose of this study was to examine and describe fundamental literacy messages found within three major science reform documents: Science for all Americans: Project 2061 (AAAS, 1990), Benchmarks for Science Literacy (AAAS, 1993), and the National Science Education Standards (NRC, 1996). A qualitative content analysis was performed in an effort to reveal any messages or statements supporting fundamental science literacy. Results from this study indicate that key science reform documents do in fact contain multiple messages supporting the fundamental sense of science literacy, however, the nature of these messages, the quantity, placement and presence of negative literacy statements may …

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Marital Harmony And Conflict: Linkages To Infants' Emotional Regulation, Cardiac Vagal Tone, And Developmental Status At Six- And Nine-Months Of Age, Staci Shizuko Ohmine Jul 2006

Marital Harmony And Conflict: Linkages To Infants' Emotional Regulation, Cardiac Vagal Tone, And Developmental Status At Six- And Nine-Months Of Age, Staci Shizuko Ohmine

Theses and Dissertations

This study examined the linkages between marital harmony and conflict and infants' emotional and physiological regulation abilities and developmental status at six- and nine-months of age. Participants included 93 first-time mothers and their infants (43 males, 50 females) from a Mountain West community. Mothers were asked to complete a battery of questionnaires, including a demographic measure and Braiker and Kelly's (1979) marital quality questionnaire. The revised Bayley Scales of Infant Development (BSID II) and Behavior Rating Scales (BRS) 2nd Edition were administered at six- and nine-months to measure infants' mental and motor development status and emotional regulation abilities. Infants' heart …

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Ecological Investigations Of Chukars In Western Utah, Randy T. Larsen Jul 2006

Ecological Investigations Of Chukars In Western Utah, Randy T. Larsen

Theses and Dissertations

This thesis presents three separate manuscripts in chapter format dealing with the ecology of Chukars (Alectoris chukar) in western North America. All three manuscripts have been formatted for publication in professional journals. Chapter one confirms discovery of ingested lead pellets in Chukars across a broad region of western Utah including all four western counties sampled. Prevalence rates were 1.9% (n=105) for crops and 10.7% (n=75) of gizzards showing no evidence of penetration wounds. Ingestion is likely related to grit size preferences that are consistent with common shot sizes. The second chapter describes watering patterns and water-site selection of Chukars. Chukars …

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Pka As An Upstream Kinase For Lkb1/Strad/Mo25, Seth Taylor Herway Jul 2006

Pka As An Upstream Kinase For Lkb1/Strad/Mo25, Seth Taylor Herway

Theses and Dissertations

The LKB1/STRAD/MO25 complex (LSMK) has been identified as the major upstream kinase for AMP-activated protein kinase (AMPK). PKA phosphorylates LKB1 at the Ser428 residue in humans and Ser431 residue in mice. We investigated PKA as an upstream kinase for LSMK. LKB1 that had been incubated with PKA prior to incubation with AMPK experienced up to a 51% increase in AMPK Kinase activity compared to LKB1 alone (p < 0.05). When blocked with a PKA Inhibitor, the kinase effect of PKA on LKB1 was eliminated. Rat epitrochlearis muscle tissue incubated with epinephrine experienced no increase in AMPK activity compared with controls indicating that epinephrine does not cause AMPK activity in this type of tissue. In conclusion, phosphorylation by PKA can increase the AMPKK activity of LKB1-STRAD-MO25 in vitro. Because LKB1 has been found to be constitutively active, it is postulated that phosphorylation by PKA may act to enhance LKB1-AMPK interaction and thus achieve its effect.

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The Effects Of 3-Phosphoglycerate And Other Metabolites On The Activation Of Amp-Activated Protein Kinase By Lkb1/Strad/Mo25, William John Ellingson Jul 2006

The Effects Of 3-Phosphoglycerate And Other Metabolites On The Activation Of Amp-Activated Protein Kinase By Lkb1/Strad/Mo25, William John Ellingson

Theses and Dissertations

Skeletal muscle contraction results in the phosphorylation and activation of the AMP-activated protein kinase (AMPK) by an upstream kinase, AMPKK. The LKB1-STRAD-MO25 complex is the major AMPKK in skeletal muscle; however, LKB1-STRAD-MO25 activity is not increased by muscle contraction. This relationship suggests that phosphorylation of AMPK by LKB1-STRAD-MO25 during skeletal muscle contraction may be regulated by allosteric mechanisms. In this study we tested an array of metabolites including glucose-6-phosphate (G6P), fructose-6-phosphate (F6P), fructose 1,6-bisphosphate (F1,6-P2), 3-phosphoglycerate (3PG), glucose-1-phosphate (G1P), glucose-1,6-bisphosphate (G1,6-P2), adenosine diphosphate (ADP), carnitine (Carn), acetyl-carnitine (Acarn), inosine monophosphate (IMP), inosine, and ammonia for allosteric regulation. We found that …

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Jumpstarting Phylogenetic Searches, Jesse Lewis Mecham Jul 2006

Jumpstarting Phylogenetic Searches, Jesse Lewis Mecham

Theses and Dissertations

Phylogenetic analysis is a central tool in studies of comparative genomics. When a new region of DNA is isolated and sequenced, researchers are often forced to throw away months of computation on an existing phylogeny of homologous sequences in order to incorporate this new sequence. The previously constructed trees are often discarded, and the researcher begins the search again from scratch. The jumpstarting algorithm uses trees from the prior search as a starting point for a new phylogenetic search. This technique drastically decreases search time for large data sets. This kind of analysis is necessary as researchers analyze tree of …

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Dna-Templated Surface Alignment And Characterization Of Carbon Nanotubes., Huijun Xin Jul 2006

Dna-Templated Surface Alignment And Characterization Of Carbon Nanotubes., Huijun Xin

Theses and Dissertations

Carbon nanotubes are appealing materials for nanofabrication due to their unique properties and structures. However, for carbon nanotubes to be used in mass-fabricated devices, precise control of nanotube orientation and location on surfaces is critical. I have developed a technique to align single-walled carbon nanotubes (SWNTs) on surfaces from a droplet of nanotube suspension under gas flow. Fluid motion studies indicate that alignment is likely due to circulation of SWNTs in the droplet. My work provides a facile method for generating oriented nanotubes for nanodevice applications. I have also devised an approach for localizing SWNTs onto 1-pyrenemethylamine-decorated DNA on surfaces. …

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Enhanced Electrospray Ionization For Mass Spectrometry And Ion Mobility Spectrometry, Li Zhou Jul 2006

Enhanced Electrospray Ionization For Mass Spectrometry And Ion Mobility Spectrometry, Li Zhou

Theses and Dissertations

Electrospray ionization (ESI) has become one of the most commonly used ionization techniques for mass spectrometry (MS) and ion mobility spectrometry (IMS), and efforts continue to improve its performance. ESI-MS is most recognized for its wide application to biomacromolecules where high sensitivity is of paramount importance. However, the major limitation in sensitivity with ESI-MS is due to its low ion transmission efficiency from the ESI source into the sampling orifice and through any stages utilized for transfer of ions from atmosphere to vacuum in the MS. A series of atmospheric pressure ion focusing interfaces were designed and implemented to enhance …

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Electric Field Gradient Focusing-Uv Detection For Protein Analysis, Shu-Ling Lin Jul 2006

Electric Field Gradient Focusing-Uv Detection For Protein Analysis, Shu-Ling Lin

Theses and Dissertations

Electric field gradient focusing (EFGF) utilizes a hydrodynamic flow and an electric field gradient to focus and concentrate charged analytes and order them in a separation channel according to electrophoretic mobility. Elution can be achieved by decreasing the applied voltage or increasing the hydrodynamic flow. EFGF has the advantages of concentrating a large volume (100 micro-L) of target proteins without significant band broadening and simultaneously removing unwanted components from the sample. Two types of EFGF devices have been investigated to concentrate and separate proteins: a fiber-based EFGF device and a hydrogel-based EFGF device. Using fiber-based EFGF with UV detection, a …

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Markov Approximations: The Characterization Of Undermodeling Errors, Lei Lei Jul 2006

Markov Approximations: The Characterization Of Undermodeling Errors, Lei Lei

Theses and Dissertations

This thesis is concerned with characterizing the quality of Hidden Markov modeling when learning from limited data. It introduces a new perspective on different sources of errors to describe the impact of undermodeling. Our view is that modeling errors can be decomposed into two primary sources of errors: the approximation error and the estimation error. This thesis takes a first step towards exploring the approximation error of low order HMMs that best approximate the true system of a HMM. We introduce the notion minimality and show that best approximations of the true system with complexity greater or equal to the …

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Model Studies Towards The Total Synthesis Of Lyconadin A Via An Acyl Radical Cascade Reaction, Koudi Zhu Jun 2006

Model Studies Towards The Total Synthesis Of Lyconadin A Via An Acyl Radical Cascade Reaction, Koudi Zhu

Theses and Dissertations

Lyconadin A is an alkaloid possessing a unique structure and antitumor activity. The total synthesis of Lyconadin A was proposed via an acyl radical cascade reaction. To investigate the possibility and stereoselectivity of the cascade cyclization, phenyl selenoester 16 was chosen as a model substrate to study the 7-exo-5-exo radical cyclization. A synthetic route to phenyl selenoester 16 was developed. The 7-exo-5-exo radical cyclization was found to occur with a high yield and excellent stereoselectivty. Attempts were also tried to synthesize another radical precursor 14 albeit with less success. A synthetic pathway to the synthesis of 14 as well as …

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Properties Of Conductance And Inhibition Of Proton Channels: M2 From Influenza A Virus And Fo From Escherichia Coli Atp Synthase, Jeffrey C. Moffat Jun 2006

Properties Of Conductance And Inhibition Of Proton Channels: M2 From Influenza A Virus And Fo From Escherichia Coli Atp Synthase, Jeffrey C. Moffat

Theses and Dissertations

Proton channels are essential for many of the processes of life. The influenza A viral protein M2 is responsible for sensing the conditions necessary for viral RNA release. The proton-translocating FoF1 ATPase (ATP synthase) uses a proton gradient to drive adenosine triphosphate (ATP) synthesis. We have directly measured proton uptake in vesicles containing reconstituted M2 or FO by monitoring external pH after addition of valinomycin to vesicles with 100-fold diluted external [K+]. This proton flux assay was utilized to quantify proton flux through single M2 and Fo channels. Contrary to previous reports, proton uptake by M2 was not significantly altered …

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A Correlational Study On How Reading Scores Are Affected By Complementing Learning And Teaching Styles In Multiple Kindergarten Settings, Leslie-Ann D. Monforto Jun 2006

A Correlational Study On How Reading Scores Are Affected By Complementing Learning And Teaching Styles In Multiple Kindergarten Settings, Leslie-Ann D. Monforto

Theses and Dissertations

The purposes of this correlational study were to (a) observe the learning styles of groups of kindergarten students and the teaching styles of their corresponding teachers; and (b) determine the effects that the matching of similar learning and teaching styles had on students' reading performances. It was hypothesized that students whose learning styles matched that of their teachers' teaching styles would do significantly better on their reading scores than those students whose learning styles did not match that of their teachers' teaching styles. Teacher and students were assessed using an adaptation of Howard Gardner's Multiple Intelligences Test to determine their …

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Genre Exploration: Alternatives To Expository Writing In Seventh Grade Life Science, Christen Haigh Jun 2006

Genre Exploration: Alternatives To Expository Writing In Seventh Grade Life Science, Christen Haigh

Theses and Dissertations

The purpose of this thesis is to explore the use of genre writing as an alternative to commonly used expository writing in the seventh grade life science classroom. My research includes student surveys and educator interviews. I surveyed 44 seventh grade science students using a Likert scale. The participating students include 1 eleven-year-old boy, 10 twelve-year-old boys, 10 thirteen-year-old boys, 1 fourteen-year-old boy, 11 twelve-year-old girls, and 11 thirteen-year-old girls. I interviewed 3 middle school science teachers who teach at public schools in New Jersey and Pennsylvania. I interviewed 4 composition professors and 2 college biology professors from Rowan University, …

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Geologic Map And Structural Analysis Of The Twin Rocks 7.5 Minute Quadrangle, Wayne County, Utah, Samuel C. Sorber Jun 2006

Geologic Map And Structural Analysis Of The Twin Rocks 7.5 Minute Quadrangle, Wayne County, Utah, Samuel C. Sorber

Theses and Dissertations

A new geologic map of the Twin Rocks 7.5 minute quadrangle primarily located within Capitol Reef National Park, south-central Utah, provides stratigraphic and structural detail not previously available. This map has also been instrumental in understanding the evolution and development of fluvial terraces associated with Sulfur Creek and the structural geology of the backlimb of the Miners Mountain uplift. Nine bedrock stratigraphic formations and eight types of Quaternary deposits were mapped throughout the quadrangle. Bedrock stratigraphy ranges in age from Permian to Jurassic. New details absent on previous geologic maps include members of the Chinle and Moenkopi Formations and the …

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Superficial Self-Harm Behavior: Helping Young Women Who Hurt Themselves, Katherine D. Ryan Jun 2006

Superficial Self-Harm Behavior: Helping Young Women Who Hurt Themselves, Katherine D. Ryan

Theses and Dissertations

Roughly 1 to 4% of the population engages in self-harm. Superficial self-harm is reported by more young women, than young men. Appropriate responses from family, friends, and other important individuals are a key ingredient in facilitating recovery. Non-therapists, such as family, friends, and school personnel often wish to assist young women who self-harm, but the problem is complex and they are often unsure of how to respond. Current studies primarily focus on the clinical interventions for self-harm, while very few have investigated the perspectives of the individuals who self-harm. This study investigated the perspectives of young women who self-harm in …

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The Mechanism Of Assembly Of The G-Protein Beta Gamma Subunit Dimer By Ck2 Phosphorylated Phosducin-Like Protein And The Chaperonin Containing Tcp-1, Christine M. Baker Jun 2006

The Mechanism Of Assembly Of The G-Protein Beta Gamma Subunit Dimer By Ck2 Phosphorylated Phosducin-Like Protein And The Chaperonin Containing Tcp-1, Christine M. Baker

Theses and Dissertations

Phosducin-like protein (PhLP) binds G-protein beta gamma subunits and is thought to assist in assembly of the G-protein beta gamma dimer. Phosphorylation of PhLP at serine residues 18-20 by the casein kinase 2 (CK2) appears to play an essential role in this process. PhLP has also been shown to interact with the chaperonin containing TCP-1 (CCT) atop its apical domain, not entering the substrate folding cavity. However, the physiological role of the PhLP-CCT interaction in G-protein beta gamma dimer formation remains unclear. This study addresses the mechanism of G-protein beta gamma assembly by exploring the specific roles of CCT and …

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Active Learning In A Large Enrollment Introductory Biology Class: Problem Solving, Formative Feedback, And Teaching As Learning, Diane Flint Robison Jun 2006

Active Learning In A Large Enrollment Introductory Biology Class: Problem Solving, Formative Feedback, And Teaching As Learning, Diane Flint Robison

Theses and Dissertations

The purpose of this study was to take a case study approach to exploring student learning experiences in a large enrollment introductory biology class. Traditionally such classes are taught through the lecture method with limited instructor-student interaction and minimal student-centered learning (Lewis & Woodward, 1984; Wulff, Nyquist, & Abbott, 1987). Biology 120 taught at Brigham Young University winter semester 2006 by John Bell was chosen as the case for the study due to its large enrollment (263) and its innovative pedagogy. In the classroom, students applied their learning through a variety of student-centered activities including solving problems, discussing concepts with …

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How Parents And Their Adolescent Children "Talk The Talk" In Religious Conversations, Jennifer Yorgason Thatcher Jun 2006

How Parents And Their Adolescent Children "Talk The Talk" In Religious Conversations, Jennifer Yorgason Thatcher

Theses and Dissertations

This study builds on previous research regarding parent-child religious conversations to explore the elements and bidirectional processes of parent-adolescent religious conversations. It employs qualitative analyses of interviews with highly religious parents and adolescents representing the major Abrahamic faiths (Christianity, Judaism, Islam) from New England and Northern California. Variations in content, structure, conversational processes, and bidirectional influence are summarized in a conceptual model. Findings suggest that the quality of conversations is greater for parents and adolescents when they are youth-centered than when they are parent-centered.

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Ligand-Induced Conformational Changes Of Extracellular Loop Two In The Dopamine Transporter, Jon D. Gaffaney Jun 2006

Ligand-Induced Conformational Changes Of Extracellular Loop Two In The Dopamine Transporter, Jon D. Gaffaney

Theses and Dissertations

The dopamine transporter (DAT) is a transmembrane spanning protein responsible for the clearance of dopamine from the dopaminergic synapse. Uptake blockers such as cocaine inhibit transport resulting in elevated levels of dopamine in the synapse. DAT is predicted to contain twelve transmembrane spanning domains (TMs) connected by alternating intra- and extracellular loops, however, the spatial arrangement of these regions is unknown. Extracellular loop 2 (EL2) is composed of approximately 80 amino acids and connects TM3 and TM4, two regions associated with uptake blocker binding. Using limited proteolysis we analyzed the aqueous accessibility of EL2 in the presence or absence of …

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The Relationship Of Social Capital To High -Risk Behavior Engagement By High School Students, Erin M. Curran Jun 2006

The Relationship Of Social Capital To High -Risk Behavior Engagement By High School Students, Erin M. Curran

Theses and Dissertations

Social capital theory suggests that there are assets inherent in social relations that may be used to facilitate enhanced social, cultural, economic, and education outcomes for individuals and groups. More specifically, this theory can be extended to include those relational investments in youth that may serve to enhance their developmental, social, and educational outcomes. Proponents of social capital theory have asserted that youth with increased access to social capital may be less likely to exhibit social and behavioral difficulties. The purpose of this study was to examine the relationship between social capital and engagement in high-risk behaviors (including substance use, …

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The Characterization And Distribution Of Renshaw Cells In The Rat Spinal Cord, Richard A. Zaruba Jun 2006

The Characterization And Distribution Of Renshaw Cells In The Rat Spinal Cord, Richard A. Zaruba

Theses and Dissertations

There is an abundance of electrophysiological and pharmacological data describing Renshaw cells (RC), however comparatively little is known about their distribution, metabolism, ionic regulation, modulation or exact role in motor behaviors. In this dissertation enzyme histochemistry and immunohistochemistry in conjunction with light, fluorescent and confocal microscopic methodologies were used to address the hypothesis that "the distribution of RC is contingent on their functional role in specific α motoneuronal pools and their unique electrophysiological and functional characteristics are reflected by their neurochemistry and synaptic inputs." The highest concentration of RC (number of RC per mm2) was found in the thoracic region …

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The Relationship Of Implicit Family Process Rules To Adolescent Presentation Of Psychological Systems, Ian David Feinauer Jun 2006

The Relationship Of Implicit Family Process Rules To Adolescent Presentation Of Psychological Systems, Ian David Feinauer

Theses and Dissertations

Implicit family process rules refer to unspoken rules about family beliefs and expectations about communication, closeness, and organization and are an important dimension of family functioning that may have a powerful influence over adolescent psychological well being. This study focused on the relationship between implicit family process rules and adolescent psychological symptoms such as: Hostility, interpersonal sensitivity, depression, anxiety, and somatization. It was hypothesized that more facilitative implicit family process rules would be related to fewer adolescent psychological symptoms. In addition, a model was created that included theexogenousindependent variables of family status, (defined as intact-marriage or non-intact), treatment status (whether …

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Influence Of Age On Auditory Gating, Ginny Marissa Smith Jun 2006

Influence Of Age On Auditory Gating, Ginny Marissa Smith

Theses and Dissertations

This study utilized paired tones at 1000 Hz with a 500 ms interpair interval and a 10 s interstimulus interval to assess sensory gating. Forty-two participants, ranging from 3-72 years of age were used to observe maturational changes in amplitude, latency, and suppression ratios of the P50 waveform. Previous research has shown that in normal adults the amplitude in response to the second of the paired tones is significantly suppressed compared to the amplitude in response to the first tone. The current study showed amplitude decreased with age to middle adulthood, where it increased slightly to later adulthood. Latencies decreased …

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Fabrication Of Polymeric Microfluidic Devices For Protein Analysis, Jikun Liu Jun 2006

Fabrication Of Polymeric Microfluidic Devices For Protein Analysis, Jikun Liu

Theses and Dissertations

2-Bromoisobutyryl bromide was immobilized on poly(methyl methacrylate) (PMMA) substrates activated using an oxygen plasma. Atom-transfer radical polymerization was then performed to graft poly(ethylene glycol) (PEG) on the PMMA surface. PMMA micro capillary electrophoresis (µCE) devices made with the covalently modified surfaces exhibited substantially reduced electroosmotic flow and nonspecific adsorption of proteins. Both column efficiency and migration time reproducibility were one order of magnitude better with derivatized PMMA µCE devices compared to untreated versions. Fast, reproducible, and efficient separations of proteins and peptides were demonstrated using the PEG-grafted PMMA µCE chips. All analyses were completed in less than 60 seconds, and …

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Medical Model Influence In Counseling And Psychotherapy: Counseling Psychology Training Directors' Views, Dallas R. Jensen Jun 2006

Medical Model Influence In Counseling And Psychotherapy: Counseling Psychology Training Directors' Views, Dallas R. Jensen

Theses and Dissertations

The practice of counseling and psychotherapy is influenced by a number of ideologies, models, and paradigms. Among these, the medical model's influence is particularly salient. The ideology of the medical field pervades the theory, research, and practice of psychology and its influence deserves close examination. The few studies in this area that have been conducted are descriptive and basic in nature. The present study aimed to contribute richness and depth to conversations about medical model influence. By interviewing Counseling Psychology training directors and applying a qualitative analysis, this study provided the following themes that characterize views of the medical model's …

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Evaluation Of Microbial Diversity In Wetland Through Polymerase Chain Reaction (Pcr) And Restriction Fragment Length Polymorphism (Rflp), Gregory K. Joseph Jun 2006

Evaluation Of Microbial Diversity In Wetland Through Polymerase Chain Reaction (Pcr) And Restriction Fragment Length Polymorphism (Rflp), Gregory K. Joseph

Theses and Dissertations

The diversity of microbial communities in wetlands has not been fully measured. These communities may offer tools to naturally remediate sites polluted with chlorinated compounds. Polmerase Chain Reaction (PCR) and Restriction Fragment Length Polymorphism (RFLP) are genomic techniques that are capable of rapidly characterizing bacteria communities and can provide valuable information about the diversity of microbial communities.

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Technology Transfer: A Qualitative Analysis Of Air Force Office Of Research And Technology Applications, David C. Trexler Jun 2006

Technology Transfer: A Qualitative Analysis Of Air Force Office Of Research And Technology Applications, David C. Trexler

Theses and Dissertations

Everyday within United States Air Forces’ research laboratories there are hundreds of scientists and engineers whose research and development activities contribute to the advancement of science and technology for mankind. The opportunities for successful technology transfer within these research activities are unbounded. This thesis examines the Air Force Office of Research and Technology Applications (ORTA’s) involvement with technology transfer, the complexities they face, the importance of their position, and what best practices ORTAs use to facilitate technology transfer. Air Force concerns and initiatives are detailed to provide perspective on balancing technology transfer with mission requirements and adherence to United States …

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Development And Validation Of Reentry Simulation Using Matlab, Robert E. Jameson Jr. Jun 2006

Development And Validation Of Reentry Simulation Using Matlab, Robert E. Jameson Jr.

Theses and Dissertations

This research effort develops a program using MATLAB to solve the equations of motion for atmospheric reentry and analyzes the validity of the program for use as a tool to expeditiously predict reentry profiles. The reentry vehicle is modeled as a point mass with constant aerodynamic properties as defined by the user. The equations of motion for reentry are based on the two-body problem. The atmosphere is modeled as a single layer exponentially decreasing in density. The MATLAB program has the ability to derive the initial trajectory conditions from the position and velocity relative to the rotating surface of the …

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