Digital Commons Network^™

Wealth And Achievement Gaps: An Examination Of Virginia Middle Schools, Paulette Natasha Richmond

Theses and Dissertations in Urban Studies

Achievement gaps, the focus of this research, result from unequal achievement and the variance in achievement existing between different segments of the student population, for example, the difference in achievement between minority students and non-minority students. The No Child Left Behind Act of 2001 and AYP (Adequate Yearly Progress) focus on achievement gaps despite contradictory expressions about the efficacy of the act. The No Child Left Behind Act has created discussion and awareness of race, SES (economically advantaged and disadvantaged) and academic achievement.

There are conflicting beliefs about the impact of resources, funding and wealth on student achievement. This study …

The Status Of The Scholarship Of Teaching And Learning In The Discipline, Paul D. Witman, Laurie Richlin

International Journal for the Scholarship of Teaching & Learning

The concept of the Scholarship of Teaching and Learning (SoTL) was developed over 15 years ago. Because scholarly recognition comes from the discipline, the researchers determined to find out how a range of disciplines deal with the SoTL. In that time, how has the SoTL been integrated into and used by the various academic disciplines? What publication outlets are available to professors within each of the disciplines to present and publish on the SoTL? This survey review of current associations, conferences, and journals examines the SoTL in 20 different disciplines as demonstrated by scholarly production within these disciplines. Adoption levels …

A Case Study Using Guided Reading And Teacher Read-Alouds While Monitoring English Language Learners' And Native English Speakers' Reading Achievement, Kelsey M. Baker

Dissertations and Theses @ UNI

The number of English Language Learners (ELLs) in the United States continues to increase (U.S. Census Bureau, 2002); therefore, schools and educators are affected by the growing differences in students' language skills, prior experiences, and progress. This research addresses the need for understanding ELLs and how ELLs benefit from adults effectively reading aloud to them. Further research is needed on effective reading instruction for ELLs for several reasons. First, teachers are becoming ELL teachers by default and feel overwhelmed because of the responsibility to teach both language and content (Gersten, 2002). Second, an achievement gap exists between ELLs and native …

Low-Thrust Control Of A Lunar Orbiter, Nathan Harl

Masters Theses

"This thesis presents a method for maintaining a long-term lunar Sun-synchronous orbit using continuous low-thrust hardware. The control method is developed using optimal control theory, which involves controlling a system through the minimization of a desired cost function"--Abstract, page iii.

Operation Of A Brushless Dc Drive For Application In Hybrid Electric Vehicles, James Scott Jenkins

Masters Theses

"One of the goals of a hybrid electric vehicle design is to improve the overall performance of the vehicle by incorporating several different power sources in such a way as to maximize the energy usage. By combining the desirable characteristics of each of the components in the system, the vehicle becomes more efficient to operate. Energy storage systems such as batteries and ultra-capacitors can be used to supply or store energy from the system when needed. The primary power source in this model will be an internal combustion engine coupled with a permanent magnet synchronous generator. The purpose of this …

Distribution System Operation And Planning In The Presence Of Distributed Generation Technology, Gavin Wesley Jones

Masters Theses

"Distributed generation (DG) is becoming an increasingly attractive power generation paradigm in the field of power engineering as economic and environmental factors drive new technologies to be more efficient and less polluting than their earlier counterparts. Although the concept of DG is not new, little research has been done on the topic and even fewer field tests have been performed. This lack of research, along with other factors, has somewhat slowed the acceptance of DG into markets, other than industrial or commercial co-generation for heat and power. This thesis attempts to examine and compare three types of DG: diesel generators, …

Diversity Techniques For Signal-Strength Based Indoor Location Determination, Anil Ramachandran

Masters Theses

"Diversity techniques have been found in the literature to be suitable for compensating channel uncertainties such as multipath fading. In this thesis, we exploit spatial and frequency diversity techniques for improving accuracy in locating stationary and mobile objects in the indoor environment"--Abstract, page iv.

Properties Of Alkaline-Resistant Calcium-Iron-Phosphate Glasses, Jiawanjun Shi

Masters Theses

"The physical properties and alkaline corrosion resistant properties of calcium-iron-phosphate glasses were studied. The addition of Fe₂O₃ decreases the thermal expansion coefficient and increases the glass fiber's Young's modulus in comparison with the addition of CaO. Bulk glass dissolution behavior in alkaline Lawrence solution was studied by weight loss experiments, Raman spectroscopy, and analytical scanning electron microscopy. The corrosion of glass powder in NaOH solution was studied by X-ray diffraction, infrared spectroscopy and high pressure liquid chromatography. The results show that the dissolution rate decreases when the phosphate chain length decreases. Calcium oxide can improve the glass durability in high …

Robust Mechanism Synthesis With Random And Interval Variables, Pavan Kumar Venigella

Masters Theses

"Robust mechanism synthesis ensures that the performance of a mechanism is not sensitive to uncertainties in the mechanism and its environment. The uncertainties include the dimension variations, installation errors, random input motion, and various external forces. Robust mechanism synthesis is used to minimize the impact of these uncertainties on the mechanism performance. Robust mechanism synthesis has been performed by either a probabilistic approach or a worst case approach. The former approach describes uncertain parameters as random variables while the latter approach treats uncertain parameters as interval variables. In this work, methods are developed for robustness assessment and robust mechanism synthesis …

High School Dropout : Educators' Knowledge Of And Perceived Role In Dropout Prevention, Dustin Reese

Dissertations and Theses @ UNI

The reasons behind high school dropout have been examined for years. Previous research has focused primarily on understanding student characteristics in relation to high school dropout. However, teachers play an important role in preventing school dropout. Their beliefs about dropout may influence the way in which they interact with students, especially those they believe are at risk for dropout. Because of the critical influence teachers can have on students' educational decisions, this research sought to answer the following questions: (1) What factors do educators believe contribute to students' decision to drop out of school? and (2) What type of influence …

Identification Of Radial Streaming And Pseudopods In Dermoscopy Images, Sayali Prabhakar Deshpande

Masters Theses

"This thesis demonstrates an algorithm to identify the features of radial streaming and pseudopods found in dermoscopy images of malignant melanoma. The algorithm includes preprocessing images using the Principal Component Transform and an application of mathematical techniques to extract the desired features from the lesion image on the basis of color, size, shape, and orientation with respect to the lesion boundary. These identified features are further used to classify the lesion as malignant or benign. The proposed algorithm has produced a diagnostic accuracy of 90.50% for the training set of 31 malignant and 109 benign images and a diagnostic accuracy …

Susceptibility Scanning System As Failure Analysis Tool For System Level Esd Problems, Giorgi Muchaidze

Masters Theses

"System level Electrostatic Discharges (ESDs) can lead to soft-errors (e.g., bit-errors, wrong resets). The goal of this project is to offer guidance in finding the root cause of soft-errors frequently observed using immunity scanning system. Immunity scanning is an increasingly adopted method for root cause analysis of system level immunity sensitivities. It allows localizing affected nets and ICs. At first a description of the ESD discharge process is given, which provides the necessary background for correctly analyzing ESD failures. Local scanning and in-circuit measurement techniques are expounded in this study. Further, it is shown how PCB scanning results can reveal …

Petrographic And Geochemical Study On Cave Pearls From Kanaan Cave (Lebanon), Fadi H. Nader

International Journal of Speleology

The Kanaan cave is situated at the coastal zone, north of Beirut City (capital of Lebanon). The cave is located within the upper part of the Jurassic Kesrouane Formation (Liassic to Oxfordian) which consists mainly of micritic limestone. Twenty seven cave pearls were subjected to petrographic (conventional and scanning electron microscopy) and geochemical analyses (major/trace elements and stable isotopes). The cave pearls were found in an agitated splash-pool with low mud content. They are believed to have formed through chemical precipitation of calcite in water over-saturated with calcium. The nucleus and micritic laminae show δ¹⁸O_V-PDB values of …

Seasonal Variations Of Co2 And 222Rn In A Mediterranean Sinkhole - Spring (Causse D’Aumelas, Se France), Christelle Batiot-Guilhe, Jean-Luc Seidel, Hervé Jourde, Olivier Hébrard, Vincent Bailly-Comte

International Journal of Speleology

Carbon dioxide and ²²²Rn monitoring of the atmosphere of a Mediterranean sink hole - spring (SE France) during two hydrological cycles (from September 2004 to September 2006) showed seasonal variations with very high concentrations during summer (greater than 6% and 20 000 Bq/m³, respectively). Gas dynamics in caves often show seasonal variations. Meteorological parameters (barometric pressure and temperature mainly), cave geometry and fracture networks control exchanges between the cavity and outside atmosphere. Carbon dioxide and ²²²Rn may have different sources (atmosphere, soil, bedrock, deep gas diffusion, in situ oxidation of organic matter and, in some caves, …

The Impact Of Host Rock Geochemistry On Bacterial Community Structure In Oligotrophic Cave Environments, Hazel A. Barton, Nicholas M. Taylor, Michael P. Kreate, Austin C. Springer, Stuart A. Oehrle, Janet L. Bertog

International Journal of Speleology

Despite extremely starved conditions, caves contain surprisingly diverse microbial communities. Our research is geared toward understanding what ecosystems drivers are responsible for this high diversity. To asses the effect of rock fabric and mineralogy, we carried out a comparative geomicrobiology study within Carlsbad Cavern, New Mexico, USA. Samples were collected from two different geologic locations within the cave: WF1 in the Massive Member of the Capitan Formation and sF88 in the calcareous siltstones of the Yates Formation. We examined the organic content at each location using liquid chromatography mass spectroscopy and analyzed microbial community structure using molecular phylogenetic analyses. In …

From Status To Contract And Back Again: Consent Decrees In Institutional Reform Litigation Injunction, David Schoenbrod

Articles & Chapters

No abstract provided.

Law, Metaphysics, And The New Iconoclasm Passing On: Images, Richard K. Sherwin

Articles & Chapters

No abstract provided.

Militating Democracy: Comparative Constitutional Perspectives, Ruti Teitel

Articles & Chapters

Can constitutional review by judges save democracy? This Article identifies and discusses the rise of militant constitutional democracy by exploring diverse approaches to the role of constitutional and transnational judicial review in rights protection and the challenges that these approaches present to the workings of democracy, the possibilities of compromise, consensus, and conciliation in political life, and the challenge to other constitutional values as well. Militant constitutional democracy ought to be understood as belonging to transitional constitutionalism, associated with periods of political transformation that often demand closer judicial vigilance in the presence of fledgling and often fragile democratic institutions; it …

A Study Of Elementary Instructors' Teaching Of Forearm Passing As A Part Of Volleyball Instruction, Tsui-Feng Tiffany Yeh

Dissertations and Theses @ UNI

The purpose of this study was to investigate the teaching of forearm passing as a key component of volleyball game performance. More specifically, this study investigated teachers' content knowledge and teaching knowledge (pedagogical content knowledge) related to forearm passing as described by the teachers and manifested in teaching practices in the teaching environment.

Six elementary physical education instructors participated in this study. Several methods were used for gathering different information about forearm passing research including systematic observation, videotaping, field notes, and formal and informal interviews.

The findings revealed that (a) teachers' teaching philosophy significantly influenced their teaching and designing volleyball …

Physical Analysis Of Human Hair, Lea Marie Dankers

Masters Theses

"Physical analysis of human hair has been performed to determine the effects of chemical treatments on hair samples. Five samples including an untreated sample were analyzed using various methods. The methods included differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and carbon-13 cross polarization/magic-angle spinning nuclear magnetic resonance (¹³C CP/MAS NMR)"--Abstract, page iii.

Cedar Falls Civil War, Cynthia Rae Huffman Sweet

Dissertations and Theses @ UNI

A catalog for an exhibit about the Civil War, shown at the Cedar Falls Historical Society from February to August 2007. The exhibit included items demonstrating the impact of the war on the Cedar Falls area.

Analysis Of Soil Erosion Based On Soil Properties, Preetha Veeraraghavan

Masters Theses

"The objectives of this research were to identify the major soil parameter(s) that affect the erosion rate of soil and to estimate the erosion rate based on those soil parameters. Both prepared samples and natural samples were used in this research. The soil properties analyzed were the water content, unit weight, Atterberg limits, and soil cohesion. The erosion rate was determined using a rectangular flume and a linear relation between the erosion rate and shear stress was established from the flume experiment. The slope of the linear relation was a good indicator of the soil's erosion rate. The erosion rate …

Aesthetics And The Environment: Repatriating Humanity, Nikolaos Gkogkas

Contemporary Aesthetics (Journal Archive)

If aesthetics is to claim its place among the fundamental philosophical disciplines, it must adequately deal with the ecological challenge, that is, the need to explain the continuity-relation between human and non-human environments. To that effect, Arnold Berleant's aesthetics of engagement constitutes an attractive proposal. Its critics (Allen Carlson and others) seem to miss its point and attack it on the basis of a particular understanding of Kantian aesthetics (mainly the disinterestedness thesis). But not only can Berleant's aesthetics meet the ecological challenge; it is also possible that it encourages a re-evaluation of traditional aesthetic categories (like disinterestedness) without necessarily …

Artificial Immune System Based Algorithms For Optimization And Self-Tuning Control In Power Systems, Mani Hunjan

Masters Theses

"Artificial immune systems (AIS) are new computational intelligence methods inspired by various mechanisms of the biological immune system. AIS are adaptive systems inspired by theoretical immunology and its functions, principles and models. The work depicted in this thesis centers on the applications of AIS based algorithms for optimization and self-tuning control in power systems. The optimization is carried out using an algorithm based on the clonal selection principle and the self-tuning characteristics of control for parameters are inspired by the humoral immune response of the human body. The work in this thesis is written in two papers as follows: Paper …

Bio Inspired Techniques For Simultaneous Design Of Multiple Optimal Power System Stabilizers, Tridib Kumar Das

Masters Theses

"Bio-inspired techniques are fields of study that are inspired from topics of connectionism, social behavior and emergence. Researchers have ventured into the intricacies involved with the techniques and devised algorithms based on their study. Such techniques are the focus of this thesis. The two bio-inspired techniques used for simultaneous design of power system stabilizers (PSSs) in this study are - Particle Swam Optimization (PSO) and Bacteria Foraging Algorithm (BFA). The work in this thesis is presented in three papers as follows: Paper 1 -This paper introduces an improved PSO called Small Population based PSO (SPPSO) with less number of particles …

Applications Of Solar Energy To Power Stand-Alone Area And Street Lighting, Joshua David Bollinger

Masters Theses

"A stand-alone solar-powered street or area lighting system is designed and operated completely independent of the power grid. The equipment and maintenance costs associated with a stand-alone solar-powered system are compared with the cost of using electricity to run grid connected street lights. The project focused on the viability of using solar energy to power the lights in the area surrounding St. Louis, Missouri. The results had to be consistent to warrant converting new areas to independent solar powered lighting. A prototype system is constructed from equipment available on the market for the purpose of gathering data on different lighting …

Can There Be A Theory Of Law?, Joseph Raz

Faculty Scholarship

The paper deals with the possibility of a theory of the nature of law as such, a theory which will be necessarily true of all law. It explores the relations between explanations of concepts and of the things they are concepts of, the possibility that the law has essential properties, and the possibility that the law changes its nature over time, and that what is law at a given place and time depends on the culture and concepts of that place and time. It also considers the possibility of understanding the institutions, such as the law, of cultures whose concepts …

The Art Of Collaboration In The Classroom: Team Teaching Performance, Jenna M. Neilsen

Theses and Dissertations

The Art of Collaboration in the Classroom: Team Teaching Performance is a co-written master's thesis which records our research in the field of team teaching as it relates to theatre education at the university level. It is our intent that this text be used as a tool for helping universities and teachers decide if a collaborative teaching model is right for their courses. A portion of the text is research-based, examining the scholarly writings which have preceded our work. In Chapter 1, we compiled a set of definitions, in the hopes of codifying the language used within this document as …

An Essay For Keisha (And A Response To Professor Ford), Barbara J. Flagg

Duke Journal of Gender Law & Policy

In chapter 3 I build on this conclusion and argue that political solidarity based on a common relationship to oppression and domination is the appropriate focus of (racial) identity politics and legal rights assertion; by contrast cultural claims are more contestable on both descriptive and normative terms and should be left to more fluid domains of conflict resolution such as social dialogue, the democratic process and the market economy . . . . With respect to the "foreseeable effects" model, the 1995 test for the first prong, the existence of a foreseeable impact, clearly encompasses more than cultural difference.94 In …

Gender Nonconformity And The Unfulfilled Promise Of Price Waterhouse V. Hopkins, Joel Wm. Friedman

Duke Journal of Gender Law & Policy

The Supreme Court has articulated a doctrinal framework that, if construed and applied properly, provides the lower federal courts with the analytical tools necessary to identify and proscribe workplace rules that compel individuals to adhere to appearance, attire, and behavioral norms that operate to reinforce gendered expectations.1 Since the Supreme Court has ruled that penalizing an individual for failing to conform to gendered norms of behavior constitutes a form of sex-based discrimination,2 one would expect that employees would have achieved some measure of success in challenging such policies.