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2014

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Interpretations Of Patterns And Actors In The Lapp Fund Documents, Geir Grenersen Dec 2014

Interpretations Of Patterns And Actors In The Lapp Fund Documents, Geir Grenersen

Proceedings from the Document Academy

The Lapp Fund (“Finnefondet” in Norwegian) was an important instrument in the norwegianization policy toward the Sámi and Finnish minorities between 1852 – 1921. Two studies, one from the midst 1950s (Dahl 1957) and one from the early 1980s (Eriksen & Niemi 1981), have been the standard works on this period. Recent archival studies (Grenersen N.d. & Maliniemi 2009, 2010) prove the need for a new look at the Lapp Fund documents. Through a detailed archival study Maliniemi has shown that the Sámi and the Finnish languages was much used in a local political administration. But the documents written in …

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Maintaining Stable Wireless Communication Connections Among Multiple Collaborative Mobile Robots By Intelligent Robot Motion Control, Xu Zhong Dec 2014

Maintaining Stable Wireless Communication Connections Among Multiple Collaborative Mobile Robots By Intelligent Robot Motion Control, Xu Zhong

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

This dissertation addresses the critical issue of establishing and maintaining desired wireless communication connectivity in a team of collaborative mobile robots, which is highly demanded for reliable functioning of multi-robot systems but challenging in realistic environments. The signal propagation of wireless communications among mobile robots is affected by many issues, including the transmission power, distance, obstacles, robot movement, and other environmental conditions, which result in signal loss, attenuation, multi-path fading and shadowing. Consequently, the communication condition among mobile robots in a physical environment is usually unstable, and it is difficult to accurately predict the actual communication ranges of robots. We …

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Protein Dimerization Mechanisms Study With Molecular Dynamics Simulation, Yuan Yao Dec 2014

Protein Dimerization Mechanisms Study With Molecular Dynamics Simulation, Yuan Yao

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Protein dimerization is involved in many essential biological processes like gene expression, allosteric regulation, enzymatic activation and signal transduction. However, our understanding about dimerization mechanisms is limited despite of the progress made. In this work, we applied molecular dynamics simulation with all-atom structure-based model to the investigation often commonly studied regulatory dimers. Through the combinational analysis of intrinsic energy funnels, density of states, thermodynamic free energy landscapes, phi-values of transition states, and kinetic simulations, new and detailed mechanisms of dimerization and their coupling with monomer folding are revealed, in good agreements with existing experimental evidences and suggestions. We found five …

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Achieving Regulatory Compliance In Data Management, Sumeet Vijay Bajaj Dec 2014

Achieving Regulatory Compliance In Data Management, Sumeet Vijay Bajaj

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Regulations mandate consistent procedures for information access, processing, and storage. In the United States alone, over 10,000 data management regulations exist in the financial, life sciences, health care and government sectors. A recurrent theme in data management regulations is the need for regulatory compliant storage to ensure data confidentiality, data integrity, audit trails maintenance, data retention, and guaranteed deletion. This thesis describes the design and implementation of several regulatory compliant relational databases and file systems. The systems increase efficiency and lower costs of regulatory compliance through the use of novel cryptographic and system security constructs. The first system described in …

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Greendm: A Versatile Tiering Hybrid Drive For The Trade-Off Evaluation Of Performance, Energy, And Endurance, Zhichao Li Dec 2014

Greendm: A Versatile Tiering Hybrid Drive For The Trade-Off Evaluation Of Performance, Energy, And Endurance, Zhichao Li

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

There are trade-offs among performance, energy, and device endurance for storage systems. These trade-offs become more complex in storage system comprising different storage technologies. Designs optimized for one dimension or workload often suffer in another. Therefore, it is important to study the trade-offs so as to be able to adapt the system to workloads. As different types of drives have different traits, tiering hybrid drives are studied more closely. However, previous tiering hybrids are often designed for high throughput, efficient energy consumption, or improving endurance--leaving empirical study on the trade-offs being unexplored. Past endurance studies also lack a concrete model …

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The Effects Of Gender Mainstreaming On Maternal And Child Health: A Cross-National Analysis Of Sub-Saharan Africa, Lauren Pandolfelli Dec 2014

The Effects Of Gender Mainstreaming On Maternal And Child Health: A Cross-National Analysis Of Sub-Saharan Africa, Lauren Pandolfelli

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

A substantive body of sociological literature has found that women's status is correlated with improved maternal and child health outcomes in developing countries, and accordingly, proposes policy recommendations for ending discrimination against women. Yet, the sociological literature has not engaged adequately with policy models for improving women's status. I address this gap in the literature by conducting the first cross-national quantitative analysis of gender mainstreaming -the global strategy adopted in 1995 by United Nations member countries for fostering gender equality. Specifically, the dissertation uses two-way fixed effects ordinary least squares regression to estimate the effects of gender-mainstreamed bilateral health aid, …

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The Ritualistic And Theatrical Elements Of Ashura, Nooran Abdulkareem Fattah Al-Salihi Dec 2014

The Ritualistic And Theatrical Elements Of Ashura, Nooran Abdulkareem Fattah Al-Salihi

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Ashura (also spelled Ashoura) takes place on the tenth day of Muharram when Shia Muslims commemorate the martyrdom of Imam Husayn that took place in 61 AH/ 680 AD. It is a socio-religious phenomenon that combines ritualistic and theatrical behavior. My objective is to shed light on the interaction between ritual and theatrical behavior and how these work together to form the overall event. The first section introduces the historical background of Ashura, the second section explores the ritualistic and theatrical characteristics of Ashura, and the last, concluding section talks about the relation between the two aspects and how they …

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Validating The Use Of Fluorescent Proteins As Molecular Probes In Vivo And In Vitro, Laura Elizabeth Dougherty Dec 2014

Validating The Use Of Fluorescent Proteins As Molecular Probes In Vivo And In Vitro, Laura Elizabeth Dougherty

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Fluorescent proteins are widely used in cell biology as molecular probes to observe a protein of interests location and movement and also to study protein-protein interactions. The study of protein-protein interactions is observed using a technique called fluorescent resonance energy transfer (FRET). FRET is used as a way to approximate distances between proteins in vivo and requires at least two fluorescent proteins in order to utilize the process. The most popular pairing is enhanced cyan and yellow fluorescent (eCFP/eYFP) proteins. To view protein localization, fluorescent proteins are attached to the protein of interest. PSD-95, a scaffolding protein in the post …

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Computational Modeling And Analysis Of Cardiac Excitation, Abhishek Murthy Dec 2014

Computational Modeling And Analysis Of Cardiac Excitation, Abhishek Murthy

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Modeling, analysis, and control of cardiac excitation, the biological process cardiac cells undergo on a periodic basis, is indispensable for understanding and countering life-threatening electrical disturbances of the heart, such as atrial and ventricular fibrillation. Modeling involves the derivation of a mathematical/computational representation of the dynamics of cardiac cells and their diffusivity. The key to effective modeling lies in striking a balance between i) precision, the ability of the model to replicate the underlying biological phenomena, and ii) performance, in terms of amenability to automated analysis techniques, such as simulation and formal verification. The techniques of abstraction and compositionality have …

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Dividend Taxes, Financial Frictions, And The U.S. Great Depression, Lunan Jiang Dec 2014

Dividend Taxes, Financial Frictions, And The U.S. Great Depression, Lunan Jiang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

As shown by McGrattan (2012), an anticipated increase in dividend taxes plays an important role in explaining the dramatic investment decline during the U.S. Great Depression. The first chapter of this dissertation attempts to test whether this conclusion is still robust when household heterogeneity and precautionary saving motives are taken into consideration. I build an Aiyagari model with dynamic firms, dividend taxes, and labor productivity shocks that accounts for the U.S. earnings and wealth inequality using 1930s data. The conclusion is that the impact of anticipated increases of dividend taxes on the investment is very sensitive to the presence of …

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Parallel And Flexible Hardware Implementation Of Fletcher Checksum, Maria Isabel Mera Collantes Dec 2014

Parallel And Flexible Hardware Implementation Of Fletcher Checksum, Maria Isabel Mera Collantes

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Checksums are utilized in many contexts such as communications, storage and reliable processing. The balance between checksum strength, implementation cost and obtained throughput often pose a challenge for present day system designers. In this research we propose two new methods for implementing the Fletcher Checksum (FC) in a parallelized context. We determined an extended parallel definition from the original FC and applied it to two different hardware implementation approaches. We then created a generator that would automatically output parameterized designs. We controlled the input word length, number of parallel inputs and architecture of the designs, and we then synthesized these …

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Quantum Field Theory In Coordinate Space, Ahmet Ozan Erdogan Dec 2014

Quantum Field Theory In Coordinate Space, Ahmet Ozan Erdogan

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

In order to provide a new coordinate-space perspective applicable to scattering amplitudes, in the first part of this dissertation, the structure of singularities in perturbative massless gauge theories is investigated in coordinate space. The pinch singularities in coordinate-space integrals occur at configurations of vertices which have a direct interpretation in terms of physical scattering of particles in real space-time in the same way as for the loop momenta in the case of momentum-space singularities. In the analysis of vertex functions in coordinate space, the well-known factorization into hard, soft, and jet functions is found. By power-counting arguments, it is found …

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Double Longitudinal Helicity Asymmetries In Pion Production From Proton Collisions, Studies Of Relative Luminosity Determination, And The Impact On Determination Of The Gluon Spin In The Proton, Andrew Michael Manion Dec 2014

Double Longitudinal Helicity Asymmetries In Pion Production From Proton Collisions, Studies Of Relative Luminosity Determination, And The Impact On Determination Of The Gluon Spin In The Proton, Andrew Michael Manion

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Polarized proton-proton collisions at RHIC are being used to study the origin of proton spin, which arises from the spin and orbital angular momentum of its constituent quarks and gluons. Measurements at the PHENIX experiment at $\sqrt{s} = 200$~GeV of $A_{LL}^{\pi^0}$, the double longitudinal helicity asymmetry in neutral pion production, are used in global analyses of world polarized scattering data, where they are particularly important in constraining the sector of gluon polarization. These measurements have ruled out maximal gluonic spin contributions and are consistent with a small or zero contribution. In the latest measurements, the statistical precision of the data …

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Systematic Studies Of Soft Direct Photon Production In Au+Au Collisions At Sqrt(S_Nn) = 200 Gev, Benjamin Bannier Dec 2014

Systematic Studies Of Soft Direct Photon Production In Au+Au Collisions At Sqrt(S_Nn) = 200 Gev, Benjamin Bannier

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Direct photons are produced during all stages of a heavy-ion collision. Due to their very small interaction cross section with the dense hadronic medium, they can escape the collision almost undisturbed and transport information about their production environment to a detector making them an excellent probe in heavy-ion physics. The observation of both a large yield and strong elliptical flow $v_2$ of soft direct photons in heavy ion collisions at RHIC has sparked a lot of interest. While a large yield seems to point towards abundant production from the early, hot stages of the interaction, large elliptical flow can be …

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Nitrogen Loading To The South Shore, Eastern Bays, Ny: Sources, Impacts, And Management Options, Isabelle Stinnette Dec 2014

Nitrogen Loading To The South Shore, Eastern Bays, Ny: Sources, Impacts, And Management Options, Isabelle Stinnette

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The excessive delivery of nitrogen from land into coastal waters can lead to a host of environmental problems including algal blooms, hypoxic zones, habitat loss, and acidification. While many of these environmental problems have manifested themselves within Long Island's coastal bays, the quantity and sources of nitrogen are largely unknown in much of this region, making the development of effective management plans to ameliorate these problems exceedingly difficult. This study was designed to quantify nitrogen loads and sources to Moriches, Quantuck and Shinnecock Bays within the eastern extent of Long Island's South Shore Estuary Reserve. Further this study assessed water …

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The Effect Of Patch Dynamics And Nutrient Availability On The Production Of Zostera Marina Seeds Within Shinnecock Bay, Ny, Lisa Jackson Dec 2014

The Effect Of Patch Dynamics And Nutrient Availability On The Production Of Zostera Marina Seeds Within Shinnecock Bay, Ny, Lisa Jackson

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Exposing Zostera marina to fertilized porewater has been shown to increase vegetative shoot density and leaf growth rates, as well as affect morphological shoot characteristics including increasing leaf length, leaf area and the number of leaves per shoot. However, aside from changes in shoot density, records of morphological changes in reproductive shoots subjected to increased nutrient availability are lacking. To address this, five replicate ambient and nutrient enriched patches, each between 0.5 and 2.0 m2, were selected within a developing Z. marina meadow in Shinnecock Bay, NY. Fertilizer stakes, with a N:P:K of 15:3:3, were used to amend enriched patches …

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The Impact Of The National Economy On Supreme Court Decision Making, Joshua Matthew Johnson Dec 2014

The Impact Of The National Economy On Supreme Court Decision Making, Joshua Matthew Johnson

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Is the decision making of the Supreme Court of the United States influenced by the health of the national economy? In the development of the literature on the Supreme Court, scholars have mainly focused on how legal, attitudinal, and strategic considerations impact judicial decision making. There has been less work focusing on exogenous factors such as the economy. In this dissertation, I hypothesize that the Supreme Court is responsive to the national economy during multiple stages of the decision making process of the Court--case selection, voting, and the opinion stage. In a sense, I posit that the justices of the …

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Ready, Set, Change: An Exploratory Case Study Of Readiness For Change Within Five New York State Voluntary Child Welfare Agencies, Jennette Allen-Mccombs Dec 2014

Ready, Set, Change: An Exploratory Case Study Of Readiness For Change Within Five New York State Voluntary Child Welfare Agencies, Jennette Allen-Mccombs

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Each year, significant financial resources are expended to implement new policies and programs in an attempt to facilitate organizational change (Fleming, Culler, McCorkle, Becker, & Ballard, 2011). In 2007, the New York State Office of Children and Family Services (OCFS) collaborated with Andrus Center for Learning and Innovation (ACLI) to implement the Sanctuary Model of organizational change within selected voluntary residential child welfare programs that serve youth with behavioral, emotional and social challenges. Since these organizations typically have bureaucratic structures in which culture is maintained through a set of rules and regulations, change may be particularly difficult (Dickinson & Perry, …

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Refining Mid-Infrared Emission Spectroscopy As A Tool For Understanding Planetary Surface Mineralogy Through Laboratory Studies, Computational Models, And Lunar Remote Sensing Data, Jessica Anne Arnold Dec 2014

Refining Mid-Infrared Emission Spectroscopy As A Tool For Understanding Planetary Surface Mineralogy Through Laboratory Studies, Computational Models, And Lunar Remote Sensing Data, Jessica Anne Arnold

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Mid-infrared emissivity spectra, while useful for quantifying mineral abundance, are dependent on a variety of other factors, including grain size. At present, scattering models are not fully able reproduce this dependence, especially for very fine-grained powders (d~<60μ m) typical of planetary regolith. Previous studies have modeled emissivity spectra of mineral powders by using Mie single scattering theory coupled with a radiative transfer model, such as Hapke [1993]. Chapter 2 of this work uses multiple scattering T-matrix code (from Mackowski and Mishchenko, 2011) to calculate the scattering coefficients for a cluster of spheres, rather than a single sphere as in Mie theory. I acquired emissivity spectra of highly uniform silica glass spheres, normally used for sieve calibration, for comparison to modeled spectra. Then, I calculated optical constants of the glass from micro-FTIR reflectance spectra of polished grains mounted on a petrographic slide. Modeled emissivity spectra computed with this T-matrix/radiative transfer hybrid method show a marked improvement over Mie-radiative transfer hybrid models, especially for smaller grain sizes. The complex index of refraction (ñ =n+ik) as a function of wavelength, where n and k are often referred to as optical constants, is an essential input into radiative transfer models. Hence, quantitative estimates of mineral abundance from remote sensing data require that optical constants are known for a comprehensive set of relevant minerals. While many geologically abundant materials are monoclinic or triclinic, due to both the additional complexity of the models needed and the increased effort required to orient these samples, very few sets of optical constants have been measured for lower-symmetry minerals. Chapter 3 describes how optical constants were calculated from polarized mid-infrared reflectance spectra of oriented single-crystals of five natural samples in the monoclinic crystal system, which include four pyroxene samples and one orthoclase sample. Lastly, in Chapter 4, remote sensing emissivity data from the Diviner Lunar Radiometer Experiment, along with lunar environment laboratory measurements of mineral mixtures, are used to establish constraints on the absolute abundance of olivine at sites where it has been detected by the visible/near-infrared instruments Moon Mineralogy Mapper and Kaguya Spectral Profiler. The two main results of this section are: 1) spectra do not mix linearly at these wavelengths for particles sizes typical of lunar regolith and 2) Diviner data are consistent with a wide range in olivine abundances at these sites. | 170 pages

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Models And Numerical Algorithms For Hydrodynamics With Atomic Processes And High Energy Density Applications, Hyoungkeun Kim Dec 2014

Models And Numerical Algorithms For Hydrodynamics With Atomic Processes And High Energy Density Applications, Hyoungkeun Kim

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The main goal of the research is the development of numerical equation of state model enabling hydrodynamic simulations of problems involving multiple ionization and it's application in the high energy density physics (HEDP) such as the plasma jet driven magnetoinertial fusion (PJMIF) concept and the pellet injection in Tokamak via simulations studies. For this goal, the mathematical models and numerical algorithms for ionization process has been developed, and they are demonstrated in several simulations with productive result. A numerical model for an average ionization equation-of-state (EOS) for high-Z plasmas undergoing multiple ionization processes has been developed by improving the classical …

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Software Tools For Stochastic Simulations Of Turbulence, Ryan Kaufman Dec 2014

Software Tools For Stochastic Simulations Of Turbulence, Ryan Kaufman

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

We present two software tools useful for the analysis of mesh based physics application data, and specifically for turbulent mixing simulations. Each has a broader, but separate scope, as we describe. Both features play a key role as we push computational science to its limits and thus the present work contributes to the frontier of research. The first tool is Wstar, a weak* comparison tool, which addresses the stochastic nature of turbulent flow. The goal is to compare underresolved turbulent data in convergence, parameter dependence, or validation studies. This is achieved by separating space-time data from state data (e.g. density, …

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Mathematical Modeling Of G-Protein-Coupled Receptor Signaling Pathways, Tao Jiang Dec 2014

Mathematical Modeling Of G-Protein-Coupled Receptor Signaling Pathways, Tao Jiang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

G-protein-coupled receptor (GPCR) signaling plays an important role in converting extracellular stimuli into cellular responses. Many biological functions are regulated by GPCR signaling, and nearly 40\% of current pharmaceuticals target GPCRs. In this work, mathematical modeling is used to investigate the initial steps of GPCR signaling with two major aims: 1) to understand the causes for non-canonical signaling behaviors; 2) to understand how signaling specificity is reacted to in the individual reactions of the pathway. The classic ternary complex model describing the interaction between a single ligand, receptor and G-protein served as our basic model for the initial investigation. Dose …

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Consuming Modernity: Photography In Pre-Colonial Korea, 1876-1910, Heejeong Sohn Dec 2014

Consuming Modernity: Photography In Pre-Colonial Korea, 1876-1910, Heejeong Sohn

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Postcolonial studies have successfully unveiled the cultural, social, and political networks of imperial and colonial representations embedded in visual documents of the non-Western world. Within this context, the early photography of Korea has been presented as a cultural force imposed on Koreans in relation to colonialism and Orientalism. This dissertation rethinks the representational politics of early photography during the pre-colonial period of 1876 to 1910 by problematizing the master narratives and suggesting alternative ways to interpret this historical material. Through analyzing the historical contexts of photographic materials and practices, this dissertation argues that photography, as a device of cultural expression, …

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Gender, Number, Nouns & Adjectives: A Study Of Grammatical Agreement In Second Language Learners Of Arabic & Spanish, Anne-Marie Marguerite Poulos Dec 2014

Gender, Number, Nouns & Adjectives: A Study Of Grammatical Agreement In Second Language Learners Of Arabic & Spanish, Anne-Marie Marguerite Poulos

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

This thesis investigates the causes of gender and number agreement errors in learners of both Arabic and Spanish as second languages. Data was collected from each of these groups during beginner level language courses at a university. There were a total of eight tests. The first six were adjective selection activities focusing on a specific noun phrase or sentence structure. The last two were written tests, elicited by images, where students had to produce their own nouns and adjectives. The common first language (L1) of the majority of participants is English, which lacks adjective agreement and does not have the …

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Teaching And Learning In Fourth Space: Embodying Praxis, Becoming Role Model, Nicole Galante Dec 2014

Teaching And Learning In Fourth Space: Embodying Praxis, Becoming Role Model, Nicole Galante

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

If 21st century students can ask their mobile devices questions and receive nearly instant answers, how then can 21st century teachers enact an engaged pedagogy? One possibility is by learning with and in front of students, thus creating <&ldquo>fourth space<&rdquo>--a space in which teachers embody praxis and become simultaneous models of and participants in education. This dissertation provides a new framework for English Teacher Education that centers on fourth space and the ways that teachers and students can engage in critical contact zones from within it. Drawing on critical pedagogy, combining various perspectives about identity formation and reflection theories …

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Beam Energy And System-Size Dependence Of The Space-Time Extent Of The Pion Emission Source Produced In Heavy-Ion Collisions, Alex Muu Mwai Dec 2014

Beam Energy And System-Size Dependence Of The Space-Time Extent Of The Pion Emission Source Produced In Heavy-Ion Collisions, Alex Muu Mwai

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The primary goal of high-energy nuclear physics is to develop a thorough understanding of the QCD phase diagram: Its different phases, their boundaries, and the physics they define. Heavy-ion collisions reproduce at a microscale the conditions necessary to initiate the phase transitions of nuclear matter that are only possible at extreme temperatures (T) and baryon chemical potential (\mu_{B}). An important probe utilized in studies of the hot and dense matter created in heavy-ion collisions is the method of Hanbury-Brown and Twiss interferometry. The technique is useful in providing measurements in space and time of the pion emission sources at freeze-out. …

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Neural Correlates And Peripheral Mirnas Associated With Stress-Related Telomere Shortening, Stephanie Izzi Dec 2014

Neural Correlates And Peripheral Mirnas Associated With Stress-Related Telomere Shortening, Stephanie Izzi

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Telomeres are repetitive nucleoprotein complexes at the ends of chromosomes that provide a protective cap for genomic DNA. Telomere shortening leads to cellular senescence or apoptosis. Accordingly, telomere length is considered both a mechanism and marker for aging. Increased exposure to chronic stress is associated with shorter telomere length. In addition, differences in stress reactivity have been associated with telomere length. Here I will describe several studies identifying neural circuits associated with such telomere shortening, an evaluation of saliva as an appropriate biomaterial to measure telomere length, and an exploration of the role of microRNAs as mediators of stress-related telomere …

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The Secondary/Postsecondary Writing Gap: Obeying Standards, Striving For Authenticity, Kelly Ann Streibel Dec 2014

The Secondary/Postsecondary Writing Gap: Obeying Standards, Striving For Authenticity, Kelly Ann Streibel

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

In times of daunting new standards for high school learning outcomes, high stakes assessments often result in teaching to the test. This, in turn, tends to deny high school students sufficient training in academic writing for authentic audiences and real contexts. This thesis will examine the New York State Regents Exam to present evidence that unfortunately, authentic writing experiences hardly ever appear on state assessment tests. Although the Common Core State Standards (CCSS) claim college and career readiness can be evaluated by way of assessments, examples of the Regents Exam will support the theory that valued habits like curiosity creativity, …

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Beyond Fit2d: Calculating Intensity Errors For Data Analysis Of X-Ray Synchrotron Powder Diffraction Data, Melissa Sims Dec 2014

Beyond Fit2d: Calculating Intensity Errors For Data Analysis Of X-Ray Synchrotron Powder Diffraction Data, Melissa Sims

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Synchrotron X-ray diffraction is used to investigate mineral structures. Accurate analysis of the results is limited by intensity errors caused by the experimental setup, sample, and detector. These include high intensity spikes, dead pixels, beam stop shadow, single crystal spots, and poor powder statistics, and they all contribute to the background uncertainty within powder diffraction datasets. The errors must be either quantified or removed. Due to the intrinsically low peak-to-background ratios of measured intensities in experiments at non-ambient conditions, the intensity errors are usually overestimated in subsequent Rietveld refinement; leading to unrealistically low uncertainties in the refined structural parameters. FIT2D, …

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Structure Prediction Of Carbon Dioxide Hydrate And Xenon Hydrate, Hongfei Xu Dec 2014

Structure Prediction Of Carbon Dioxide Hydrate And Xenon Hydrate, Hongfei Xu

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Gas hydrate technology is one of research focus in recent years, and can be applied to solve problems in energy, environment, and other areas. Previous views had been that most gas hydrates decompose into gas and water (or ice) under 1 GPa or so, thus, research on hydrate structures in past few decades were conducted under low pressure conditions. Recent studies have shown the possibility that new structures of gas hydrate may exist under higher pressure, and this thesis aims to explore the structures of hydrate in carbon dioxide-water system and xenon-water system with the application of high pressure. The …

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