Digital Commons Network^™

Impact Of The 3-D Model Strategy On Science Learning Of The Solar System, Mohammed Alharbi

All-Inclusive List of Electronic Theses and Dissertations

The purpose of this mixed method study, quantitative and descriptive, was to determine whether the first-middle grade (seventh grade) students at Saudi schools are able to learn and use the Autodesk Maya software to interact and create their own 3-D models and animations and whether their use of the software influences their study habits and their understanding of the school subject matter. The study revealed that there is value to the science students regarding the use of 3-D software to create 3-D models to complete science assignments. Also, this study aimed to address the middle-school students’ ability to learn 3-D …

Effective Literacy Instruction Across The Curriculum At The Secondary Level In Indiana, Paul Michael White

All-Inclusive List of Electronic Theses and Dissertations

The purpose of this study was to discover school- teacher- and student-level factors that describe effective literacy instruction at the secondary level of high-performing schools. A sub-question of the study focused on whether high-performing schools practiced “literacy across the curriculum.” National data suggest only about one-third of secondary-level students in the United States read at a proficient level. A recent trend to improve secondary-level student literacy has been to emphasize literacy development in all content areas. A mixed-method approach was used for this study. A linear regression was executed for all middle and high schools in Indiana for spring 2011, …

Positive Solutions Of Boundary Value Dynamic Equations, Olusegun Michael Otunuga, Basant Karna, Bonita Lawrence

Mathematics Faculty Research

In this paper, we deal with the existence of a positive solution for 2^nd and 3^rd order boundary value problem by first defining their respective Green’s function. The Green’s function is used to derive the Green’s function for the 2nth and 3nth order boundary value problem, respectively, where n is a positive integer. The Green’s function is also used to derive conditions for positive solution of the 2nth and 3nth order eigen value differential equation, respectively.

Clemson Commencement Program, December 2014, Clemson University

Clemson Commencement Programs

No abstract provided.

Effects Of Operating Conditions On Removal Of Trace-Amount Testosterone By Nitrocellulose Filter Membrane, Ying Liang

Department of Environmental Engineering: Theses and Other Student Research

Hormone can be removed by membrane filtration via membrane interception, sorption and diffusion. However, the effects of operating conditions of membrane filtration on hormone removal have not been evaluated systematically. In this study, the removal of testosterone by nitrocellulose membranes under different operating conditions (e.g., initial testosterone concentrations, sample volumes, flow rates and membrane pore sizes) was investigated. ¹⁴C-labeled testosterone was used as a tracer to determine the removal of testosterone in the filtration process, and a hydrodynamic model was used to determine dispersion coefficient (D) associated with the operating conditions and radius of hormone molecule. Results indicate that …

A Performance Study Of Genetic Algorithm-Assisted Beamforming In Distributed Cognitive Radio Networks, Andrew Minturn

Department of Computer Electronics and Engineering: Dissertations, Theses, and Student Research

Cognitive Radio (CR) is a technology that has gained much interest recently due to the increasing scarcity of the radio frequency spectrum. Large portions of the radio frequency spectrum are licensed to users who then have exclusive access to the bandwidth, and unlicensed bands can be a challenge to use due to interference from unlicensed users. Despite the seeming scarcity, tests of bands allocated by the Federal Communications Committee (FCC) to licensed and unlicensed user have shown that many are underutilized and often unoccupied by the user to whom they are licensed. CR aims to exploit this unused spectrum and …

A Study On Resource Efficient Digital Multimedia Security Measures In Mobile Devices, Prabhat Dahal

Department of Computer Electronics and Engineering: Dissertations, Theses, and Student Research

Advanced image and video processing abilities in smart phones and digital cameras make them popular means to capture multimedia. In addition, the integration of internet into such devices users seek to capture and easily share multimedia right from their smartphone while most steganography techniques are computer based. Hence, it is of utmost importance that the multimedia be processed for steganography right within the devices for multimedia authentication.

In this thesis, we first implement steganography into mobile smart devices that can capture multimedia. For devices such as smart phones, we propose a method to hide payload bits within video frames. The …

Identifying Change Points In A Covariate Effect On Time-To-Event Analysis With Reduced Isotonic Regression, Yong Ma, Yinglei Lai, John M. Lachin

GW Biostatistics Center

Isotonic regression is a useful tool to investigate the relationship between a quantitative covariate and a time-to-event outcome. The resulting non-parametric model is a monotonic step function of a covariate X and the steps can be viewed as change points in the underlying hazard function. However, when there are too many steps, over-fitting can occur and further reduction is desirable. We propose a reduced isotonic regression approach to allow combination of small neighboring steps that are not statistically significantly different. In this approach, a second stage, the reduction stage, is integrated into the usual monotonic step building algorithm by comparing …

Stem Stories, December 2014, #1, Stefani Keller

STEM Stories

Student Profile - Britney Bockstahler

University Magazine Winter 2014, University News Service, Office Of Alumni Relations

University Publications

This is the official magazine for RIT Alumni. Issued thrice a year in spring, fall and winter. Printing began in 1999.

How Much For An Interval? A Set? A Twin Set? A P-Box? A Kaucher Interval? Towards An Economics-Motivated Approach To Decision Making Under Uncertainty, Joe Lorkowski, Vladik Kreinovich

Departmental Technical Reports (CS)

A natural idea of decision making under uncertainty is to assign a fair price to different alternatives, and then to use these fair prices to select the best alternative. In this paper, we show how to assign a fair price under different types of uncertainty.

Granularity Helps Explain Seemingly Irrational Features Of Human Decision Making, Joe Lorkowski, Vladik Kreinovich

Departmental Technical Reports (CS)

Starting from well-known studies by Kahmenan and Tarsky, researchers have found many examples when our decision making -- and our decision making -- seem to be irrational. In this chapter, we show that this seemingly irrational decision making can be explained if we take into account that human abilities to process information are limited; as a result, instead of the exact values of different quantities, we operate with granules that contain these values. On several examples, we show that optimization under such granularity restriction indeed leads to observed human decision making. Thus, granularity helps explain seemingly irrational human decision making.

Hampton Roads Sea Level Rise Preparedness And Resilience Intergovernmental Planning Pilot Project, Ray Toll, David Architzel

Presentations, Lectures, Posters, Reports

No abstract provided.

Spatial And Seasonal Variations In Aridification Across Southwest North America, Shannon Miller Jones

Earth and Planetary Sciences ETDs

The Southwestern region of North America (SWNA) is projected to become more arid throughout the 21st century as precipitation (P) and evaporation (E) rates change with increasing global temperatures. Trends in the regional surface moisture balance (P−E) of SWNA vary between the arid southern subregion (mostly Northern Mexico) and the more temperate northern subregion (Southwest US), depending on the relative contributions of cold and warm season P and E. Interpreting the spatial and seasonal variations of the projected aridification is important for understanding the potential impacts of climate change on SWNA regional hydrology. We compare the projected trends in P, …

Book Review - Wild Connection: What Animal Courtship And Mating Tell Us About Human Relationships, J. Matthew Hoch

Marine & Environmental Sciences Faculty Articles

No abstract provided.

Extended Necessary Condition For Local Operations And Classical Communication: Tight Bound For All Measurements, Scott M. Cohen

Physics Faculty Publications and Presentations

We give a necessary condition that a separable measurement can be implemented by local quantum operations and classical communication (LOCC) in any finite number of rounds of communication, generalizing and strengthening a result obtained previously. That earlier result involved a bound that is tight when the number of measurement operators defining the measurement is relatively small. The present results generalize that bound to one that is tight for any finite number of measurement operators, and we also provide an extension which holds when that number is infinite. We apply these results to the famous example on a 3 × 3 …

Scaling Group Analysis On Mhd Free Convective Heat And Mass Transfer Over A Stretching Surface With Suction / Injection, Heat Source/Sink Considering Viscous Dissipation And Chemical Reaction Effects, Hunegnaw Dessie, Naikoti Kishan

Applications and Applied Mathematics: An International Journal (AAM)

This paper concerns with scaling group analysis on MHD free convective heat and mass transfer over stretching surface considering effects of thermal-diffusion and diffusion-thermo with suction /injection, heat source/sink and chemical reaction by taking into account viscous dissipation. Scaling group transformations are used to convert the partial differential equations of governing equations into ordinary differential equation and are solved numerically by Keller Box Method. Numerical results obtained for different parameters are drawn graphically and their effects on velocity, temperature and concentration profiles are discussed and shown graphically. Skin-friction coefficient, Nusselt number and Sherwood number are presented in table. It is …

Steady Quadratic Stokes Flow Past Deformed Sphere: A Novel Perturbation Technique, Deepak K. Srivastava, Nirmal Srivastava, Raja R. Yadav

Applications and Applied Mathematics: An International Journal (AAM)

In this paper, the problem of steady quadratic Stokes flow past a deformed sphere has been tackled with the use of a novel perturbation technique in both situations when a uniform stream is along the axis of symmetry (axial flow) and when it is perpendicular to the axis of symmetry (transverse flow). The most general form of the deformed sphere, governed by polar equation, is considered here for the study. The general expressions for axial and transverse Stokes drag for deformed sphere has been derived up to the second order of deformation parameter for parabolic and stagnation like parabolic flow. …

Recruitment Facilitation And Spatial Pattern Formation In Soft-Bottom Mussel Beds, John A. Commito, Ann E. Commito, Rutherford V. Platt, Benjamin M. Grupe, Wendy Dow Piniak, Natasha J. Gownaris, Kyle A. Reeves, Allison M. Vissichelli

Environmental Studies Faculty Publications

Mussels (Mytilus edulis) build massive, spatially complex, biogenic structures that alter the biotic and abiotic environment and provide a variety of ecosystem services. Unlike rocky shores, where mussels can attach to the primary substrate, soft sediments are unsuitable for mussel attachment. We used a simple lattice model, field sampling, and field and laboratory experiments to examine facilitation of recruitment (i.e., preferential larval, juvenile, and adult attachment to mussel biogenic structure) and its role in the development of power-law spatial patterns observed in Maine, USA, soft-bottom mussel beds. The model demonstrated that recruitment facilitation produces power-law spatial structure similar …

Relationships Between Wellness-Related Behaviors And Academic Performance, Helene M. Alfano

Dissertations

This study investigated possible relationships between specific wellness-related behaviors and academic achievement by using self-reported data from the 2009 Michigan Youth Risk Behavior Survey (MYRBS). Participants were students from 50 public high schools in Michigan in grades 9 through 12 (N = 3,411). Survey responses were analyzed with an ordinal logistic regression procedure using SPSS software. Beyond the control model, the block of variables on (a) diet explained 9.3% of the variance in the outcome measure, an additional amount of variance that was statistically significant and practically important. Each of the remaining blocks, including (b) physical activity, (c) self-perception of …

Scientific Application Acceleration Utilizing Heterogeneous Architectures, Edwin Weill

All Theses

Within the past decade, there have been substantial leaps in computer architectures to exploit the parallelism that is inherently present in many applications. The scientific community has benefited from the emergence of not only multi-core processors, but also other, less traditional architectures including general purpose graphical processing units (GPGPUs), field programmable gate arrays (FPGAs), and Intel's many integrated cores (MICs) architecture (i.e. Xeon Phi). The popularity of the GPGPU has increased rapidly because of their ability to perform massive amounts of parallel computation quickly and at low cost with an ease of programmability. Also, with the addition of high-level programming …

Secondary Student Outcomes And Perspectives On A Multiple Pathways Approach To Education : Engagement, Achievement, And Transitions., Lisa-Anne Ferris

Electronic Theses and Dissertations

Career and Technical Education, earlier known as Vocational Education, has been formally part of public education since 1917. Federal policies have been used to support linking academic and vocationally-based curricula to give secondary and postsecondary students practical work experience within schools to prepare them for the workforce (Gordon, 2008). The current policy, The Carl D. Perkins Career and Technical Education Act, or Perkins IV, is the most recent policy to integrate academic and vocationally-based curricula’s using a career pathway model under Programs of Study (POS) (USDE, 2013). POS are career pathways that students choose in the beginning of their high …

Cash Is Suprisingly Valuable As A Strategic Asset, Changhyun Kim, Richard A. Bettis

Research Collection Lee Kong Chian School Of Business

Academics, politicians, and journalists are often highly critical of U.S. firms for holding too much cash. Cash holdings are stockpiled free-cash flow and incur substantial opportunity costs from the perspectives of economics. However, behavioral theory highlights the benefits of cash holdings as fungible slack resources facilitating adaptive advantages. We use the countervailing forces embodied in these two theories to hypothesize and test a quadratic functional relationship of returns to cash measured by Tobin's q. We also build and test a related novel hypothesis of scale-dependent returns to cash based on the competitive strategy concept of strategic deterrence. Tests for both …

Hospital Discharge Decision Modeling For Mental Health Inpatients, Peiwen Duan

Industrial Engineering Undergraduate Honors Theses

This research addresses the issue of unnecessary treatment and late discharge for mental health inpatients. In this thesis, a dynamic decision model is proposed to determine the optimal timing to discharge a patient from hospital that considers both the impacts of over-treatment and not enough treatment on patients recovery. We measure the reward of making the discharge decisions in terms of hospitalization cost and readmission cost. The objective is to minimize the total expected cost for patients and provides hospital care providers with theoretical methods to assist them to make a better decision about discharge planning and management.

An Empirical Study On The Adequacy Of Testing In Open Source Projects, Pavneet Singh Kochhar, Ferdian Thung, David Lo, Julia Lawall

Research Collection School Of Computing and Information Systems

During software maintenance, testing is crucial to ensure the quality of code as it evolves. With the increasing size and complexity of software, adequate software testing has become increasingly important. Code coverage is an important metric to gauge the effectiveness of test cases and the adequacy of testing. However, what is the coverage level exhibited by large-scale open-source projects? What is the correlation between software metrics and the code coverage of the software?In this study, we investigate the state-of-the-practice of testing by measuring code coverage in open-source software projects. We examine over300 large open-source projects written in Java, coming from …

Core Handling And Processing For The Wais Divide Ice-Core Project, Joseph Souney Jr, Mark S. Twickler, Geoffrey M. Hargreaves, Brian M. Bencivengo, Matthew J. Kippenhan, Jay A. Johnson, Eric D. Cravens, Peter D. Neff, Richard M. Nunn, Anais J. Orsi, Trevor J. Popp, John F. Rhoades, Bruce H. Vaughn, Donald E. Voigt, Gifford J. Wong, Kendrick C. Taylor

All Materials

On 1 December 2011 the West Antarctic Ice Sheet (WAIS) Divide ice-core project reached its final depth of 3405 m. The WAIS Divide ice core is not only the longest US ice core to date, but is also the highest-quality deep ice core, including ice from the brittle ice zone, that the US has ever recovered. The methods used at WAIS Divide to handle and log the drilled ice, the procedures used to safely retrograde the ice back to the US National Ice Core Laboratory (NICL) and the methods used to process and sample the ice at the NICL are …

Arctic Air Pollution: New Insights From Polarcat-Ipy, Katherine S. Law, Andreas Stohl, Patricia K. Quinn, Charles A. Brock, John F. Burkhart, Jean-Daniel Paris, Gerard Ancellet, Hanwant B. Singh, Anke Roiger, Hans Schlager, Jack E. Dibb, Daniel J. Jacob, S R. Arnold, Jacques Pelon, Jennie L. Thomas

Earth Sciences

Given the rapid nature of climate change occurring in the Arctic and the difficulty climate models have in quantitatively reproducing observed changes such as sea ice loss, it is important to improve understanding of the processes leading to climate change in this region, including the role of short-lived climate pollutants such as aerosols and ozone. It has long been known that pollution produced from emissions at midlatitudes can be transported to the Arctic, resulting in a winter/spring aerosol maximum known as Arctic haze. However, many uncertainties remain about the composition and origin of Arctic pollution throughout the troposphere; for example, …

Implementation Of The Essential Elements Of Standards-Focused Middle-Level Schools And Programs And Their Relationship To Student Achievement, Jeffrey Craig

Dissertations - ALL

In New York State, there are regulations that describe many of the practices that middle-level schools are supposed to implement. Yet, little is known about the effectiveness of these middle-level practices in schools in the state. Without definitive information about the impact of middle-level practices on student achievement, it's difficult for practitioners and leaders to know if the school improvement decisions they make are the right ones and whether they will have the desired impact on student achievement.

This study compares the implementation of the middle-level guidelines for New York State, known as The Essential Elements of Standards-Focused Middle-Level Schools …

A Greedy Method To Simulate Drainage In Cross Sections, Long Li

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

Porous media, such as rocks and soil, make up the largest proportion of mass in nature. Pore-network model is a widely used model to describe the tiny and complicated inner structure of porous media. Assisted by the development of X-ray computed microtomography in recent years, researchers are able to extract the geometric characters of inner pores and throats from porous media, then further explore two-phase flow in porous media more exactly. Drainage, a process that a non-wetting phase fluid replaces the other wetting fluid, is the research topic of this thesis. The boundaries between two different phases, named as menisci …

A Greedy Method To Simulate Drainage In Cross Sections, Long Li

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

Porous media, such as rocks and soil, make up the largest proportion of mass in nature. Pore-network model is a widely used model to describe the tiny and complicated inner structure of porous media. Assisted by the development of X-ray computed microtomography in recent years, researchers are able to extract the geometric characters of inner pores and throats from porous media, then further explore two-phase flow in porous media more exactly. Drainage, a process that a non-wetting phase fluid replaces the other wetting fluid, is the research topic of this thesis. The boundaries between two different phases, named as menisci …