Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2005

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 391 - 420 of 10381

Full-Text Articles in Entire DC Network

Autism And Parental Marital Satisfaction: The Role Of Adequacy Of Resources, Geneeta Kaliah Chambers Dec 2005

Autism And Parental Marital Satisfaction: The Role Of Adequacy Of Resources, Geneeta Kaliah Chambers

Loma Linda University Electronic Theses, Dissertations & Projects

The goal of the present study was to expand on the existing literature exploring families with children who have developmental disabilities, particularly autism. Previous studies have been constrained by univariate approaches that have failed to adequately capture the nuances of family functioning. Using an ecological/context approach, stemming from an ongoing research program conducted within a university-based treatment center, the present study attempted to improve on the conceptualization of interrelationships among family members and the role that contextual factors play within that dynamic. Specifically, the present study explored the influence of children’s level of autism on parents’ reports of their marital …

Go to article

Factors Related To Delayed Time For Hiv Care Among Youth Living With Hiv: A Cross-Sectional Analysis Of Social Support Networks And Access To Care, Patricia L. Jones Dec 2005

Factors Related To Delayed Time For Hiv Care Among Youth Living With Hiv: A Cross-Sectional Analysis Of Social Support Networks And Access To Care, Patricia L. Jones

Loma Linda University Electronic Theses, Dissertations & Projects

Purpose: This research explored the pattern of influence social support networks had on delayed time between diagnosis and first doctor’s visit after diagnosis of HIV in youth. Results showed that factors related to receiving a referral were prosocial peer behaviors and excessive fibbing in the past 6 months. The study identified sources of social support and described the relationship between the source of support and time of first doctor’s visit after HIV diagnosis. Both descriptive and multivariate analyses were performed on all youth (N=347) and specifically on those seeking care. Methodology: Historical data were extracted from the baseline dataset of …

Go to article

Dynamic Determinants Of Incisal Display, Shawn Paul Pesh Dec 2005

Dynamic Determinants Of Incisal Display, Shawn Paul Pesh

Loma Linda University Electronic Theses, Dissertations & Projects

The principal objective of this study was to use computer aided design (CAD) to better illustrate and quantify the relationship of mandibular arch depth, mandibular arch width, overbite, and overjet in the presence of mandibular dental crowding. To date, there has been no research examining how changes in the mandibular arch limit the orthodontist's ability to control overbite and overjet. Understanding how to effectively manage overbite and overjet are crucial to the clinician's ability to manipulate incisal display. Polyvinyl siloxane impressions of both maxillary and mandibular arches of a Caucasian patient were taken and used to pour dental stone models. …

Go to article

Accuracy Of The Newtom 3g™ In Measuring The Angle Of The Articular Eminence, Rehana Khan Dec 2005

Accuracy Of The Newtom 3g™ In Measuring The Angle Of The Articular Eminence, Rehana Khan

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to determine the accuracy of the Newtom 3G™ in determining the angulation of the articular eminence. The benefits of conducting this study were to provide additional uses for the standard records that are taken for the purposes of orthodontic treatment, as well as evaluate the Newtom 3G™ for accuracy in measuring the anatomy of the glenoid fossa. This study required 20 participants that volunteered to allow their records to be used. Records evaluated were the Newtom 3G™, impressions, and wax check bite registrations. The wax record was taken using the 'forced bite' technique to …

Go to article

The Urban Transportation Decision-Making Process: A Qualitative Examination Of Omaha-Council Bluffs Metropolitan Area, Aleksandra Georgieva Tepedelenova Dec 2005

The Urban Transportation Decision-Making Process: A Qualitative Examination Of Omaha-Council Bluffs Metropolitan Area, Aleksandra Georgieva Tepedelenova

Student Work

This thesis focuses on the transportation decision-making process in urban areas with a Metropolitan Planning Organization (MPO). It recognizes the importance of transportation planning for decision-making, in that planning supports decision-making. This research is a qualitative case study, which examines transportation decision-making in the Omaha-Council Bluffs metropolitan area. The Metropolitan Area Planning Agency (MAPA) is the MPO of the urban area. Responsible parts for transportation planning are the MAPA Transportation Technical Advisory Committee (TTAC) and the MAPA Council of Officials. The researcher conducts a series of interviews with members of the two groups in order to address the research questions. …

Go to article

Teacher Quality And Teacher Preparedness In Public Secondary Schools: Evidence From Sass 1999-2000, Xuejin Lu Dec 2005

Teacher Quality And Teacher Preparedness In Public Secondary Schools: Evidence From Sass 1999-2000, Xuejin Lu

Dissertations

In this study, I inquired into the quality of public secondary school teachers by examining what percentages of teachers were highly qualified in the fields of their main teaching assignment and in each specific field they taught. The focus was placed on the core academic fields (English, social studies, math, and science) and the subfields of science (chemistry, physics, earth science, and physical science). I also investigated whether there were possible variations in the distribution o f highly qualified teachers by school locations and by the percentages o f minority student enrollment in schools. Furthermore, I examined the relationship between …

Go to article

Software Tools For Real-Time Simulation And Control, Raghu Sankarayogi Dec 2005

Software Tools For Real-Time Simulation And Control, Raghu Sankarayogi

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this thesis is to design and simulate a multi-agent based energy management system for a shipboard power system in hard real-time environment. The automatic reconfiguration of shipboard power systems is essential to improve survivability. Multi-agent technology is used in designing the reconfigurable energy management system using a self-stabilizing maximum flow algorithm. The agent based energy management system is designed in a Matlab/Simulink environment. Reconfiguration is performed for several situations including start-up, loss of an agent, limited available power, and distribution to priority ranked loads. The number of steps taken to reach the global solution and the time …

Go to article

Production Of Conjunctions And T-Units By The Elderly, Benjamin Haymond Dec 2005

Production Of Conjunctions And T-Units By The Elderly, Benjamin Haymond

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recent research indicates a change in healthy elderly adult language capabilities. More specifically, Shadden (1997) and Ryan (1996) state that language competence is less affected by the processes of aging than production. The topic of this research examined specifically the production of conjunctions from the perspective of Halliday and Hasan (1976) in procedural and narrative discourse by the elderly. The hypothesis stated that the relationship between age and conjunctions produced would be non-significant. In a cross-sectional study, 17 subjects between the ages of 60-86 were interviewed and the transcripts analyzed.;Results supported the hypothesis of a non-significant relationship between age and …

Go to article

Chaotic Desynchronization Of Multistrain Diseases, Ira Schwartz, Leah Shaw, Derek Cummings, Lora Billings, Marie Mccrary, Donald Burke Dec 2005

Chaotic Desynchronization Of Multistrain Diseases, Ira Schwartz, Leah Shaw, Derek Cummings, Lora Billings, Marie Mccrary, Donald Burke

Department of Mathematics Faculty Scholarship and Creative Works

Multistrain diseases are diseases that consist of several strains, or serotypes. The serotypes may interact by antibody-dependent enhancement rADE, in which infection with a single serotype is asymptomatic, but infection with a second serotype leads to serious illness accompanied by greater infectivity. It has been observed from serotype data of dengue hemorrhagic fever that outbreaks of the four serotypes occur asynchronously. Both autonomous and seasonally driven outbreaks were studied in a model containing ADE. For sufficiently small ADE, the number of infectives of each serotype synchronizes, with outbreaks occurring in phase. When the ADE increases past a threshold, the system …

Go to article

A Note On The Orientation Of Symmetric Rigid Bodies Sedimenting In A Power-Law Fluid, Ashuwin Vaidya Dec 2005

A Note On The Orientation Of Symmetric Rigid Bodies Sedimenting In A Power-Law Fluid, Ashuwin Vaidya

Department of Mathematics Faculty Scholarship and Creative Works

We study the terminal orientation of symmetric bodies translating in a quiescent liquid modeled by the power-law fluid. We are able to show by invoking the symmetries of the sedimenting body and the Stokes flow field that at small Reynolds numbers, the competition of inertial and shear-thinning (or shear-thickening) contributions to the torque does not cause the tilt angle that is observed in experiments performed on viscoelastic liquids with shear-thinning properties.

Go to article

University Reporter - Volume 10, Number 04 - December 2005 Dec 2005

University Reporter - Volume 10, Number 04 - December 2005

1996-2009, University Reporter

This issue of the University Reporter includes articles about National Institute of Health funding for a Dana-Farber/Harvard Cancer Center and UMass Boston partnership, the Institute for Asian American Studies and the Mauricio Gastón Institute for Latino Community Development and Public Policy sponsored studies of the ways immigrant entrepreneurs contribute to the neighborhoods, Provost Paul Fonteyn's efforts to bring science education to displaced Hussicane Katrina students, and other news from UMass Boston.

Go to article

Harmony Search For Structural Design, Zong Woo Geem, Kang Seok Lee, Chung-Li Tseng Dec 2005

Harmony Search For Structural Design, Zong Woo Geem, Kang Seok Lee, Chung-Li Tseng

Engineering Management and Systems Engineering Faculty Research & Creative Works

Various algorithms have been developed and applied to structural optimization, in which cross-sectional areas of structure members are assumed to be continuous. in most cases of practical structure designs, however, decision variables (cross-sectional areas) are discrete. This paper proposes a combinatorial optimization model for structural design using a new nature-inspired algorithm, harmony search (HS). HS is also compared to genetic algorithms through a standard truss example. Numerical results reveal that the proposed HS is a powerful search algorithm for combinatorial structure optimization.

Go to article

The Sbc-Tree: An Index For Run-Length Compressed Sequences, Mohamed Y. Eltabakh, Wing-Kai Hon, Rahul Shah, Walid G. Aref, Jeffrey S. Vitter Dec 2005

The Sbc-Tree: An Index For Run-Length Compressed Sequences, Mohamed Y. Eltabakh, Wing-Kai Hon, Rahul Shah, Walid G. Aref, Jeffrey S. Vitter

Department of Computer Science Technical Reports

No abstract provided.

Go to article

Scaling Byzantine Fault-Tolerant Replication To Wide Area Networks, Yair Amir, Claudiu Danilov, Danny Dolev, Jonathan Kirsch, John Lane, Josh Olsen, David Zage Dec 2005

Scaling Byzantine Fault-Tolerant Replication To Wide Area Networks, Yair Amir, Claudiu Danilov, Danny Dolev, Jonathan Kirsch, John Lane, Josh Olsen, David Zage

Department of Computer Science Technical Reports

No abstract provided.

Go to article

Fabrication Of A Microfluidic Platform For Impedance Analysis Of Cultured Endothelial Cell Monolayers., Stuart J. Williams 1981- Dec 2005

Fabrication Of A Microfluidic Platform For Impedance Analysis Of Cultured Endothelial Cell Monolayers., Stuart J. Williams 1981-

Electronic Theses and Dissertations

Assessing the functionality of the endothelium can provide insight into the initiation and formation of arterial diseases. One of the most important functions of the endothelial layer is its permeability. The integrity of the cell monolayer and its ability to transport molecules can be assessed in vitro by investigating the electrical impedance. In this study, a microfluidic platform was created using an electrode-patterned glass substrate and microfluidic poly(dimethyl siloxane) (PDMS) substrate. The electrode glass base of the structure was fabricated with platinum square electrodes of various sizes ranging from 10x10 ìm2 to 160x160 ìm2 and a larger, common counter electrode. …

Go to article

An Analysis Of Websites Of Bi-National Heterosexual Couples, Sadashivam Rao Dec 2005

An Analysis Of Websites Of Bi-National Heterosexual Couples, Sadashivam Rao

CLCWeb: Comparative Literature and Culture

In his paper "An Analysis of Websites of Bi-national Heterosexual Couples," Sadashivam Rao discusses the design of world wide web homepages of bi-national couples. Rao shows how such websites become locations of the re-invention of notions of culture, generating a particular practice of representation, namely that of "hyphenating." Rao contends that the subjects of personal homepages enter the domain of the internet as entities already embedded in many other domains of discourse such as those of nationalism, culture, and media. Further, Rao proposes that this specific genre of websites reflects traces of these discourses. Of course, in the process of …

Go to article

A Methodology For Efficiently Sampling The Conformation Space Of Molecular Structures, Audrey Lee, Ileana Streinu, Oliver Brock Dec 2005

A Methodology For Efficiently Sampling The Conformation Space Of Molecular Structures, Audrey Lee, Ileana Streinu, Oliver Brock

Computer Science: Faculty Publications

Motivated by recently developed computational techniques for studying protein flexibility, and their potential applications in docking, we propose an efficient method for sampling the conformational space of complex molecular structures. We focus on the loop closure problem, identified in the work of Thorpe and Lei (2004 Phil. Mag. 84 1323-31) as a primary bottleneck in the fast simulation of molecular motions. By modeling a molecular structure as a branching robot, we use an intuitive method in which the robot holds onto itself for maintaining loop constraints. New conformations are generated by applying random external forces, while internal, attractive forces pull …

Go to article

Effectiveness Of The "Common" Method In Balancing Exhaust Ventilation Systems, Vivek Balasubramanian Dec 2005

Effectiveness Of The "Common" Method In Balancing Exhaust Ventilation Systems, Vivek Balasubramanian

Graduate Theses, Dissertations, and Problem Reports (ETD)

Dampers are used to adjust the distribution of airflows in duct systems. The "common"(i.e., most commonly used) method is to adjust each damper in turn so that the airflow through its branch equals the desired level. Typically, the airflow through each branch duct is estimated from the centerline velocity pressure. To test the effectiveness of that approach, dampers were adjusted on a seven branch, full-sized experimental duct system. After adjusting the dampers for a given condition, the percent excess airflow (%Qexcess) for the system was estimated as the amount above the ideal fan airflow that would exist if the fan …

Go to article

America And China: Cultural Differences In Online Learning Motivation, Zongxiang Mei Dec 2005

America And China: Cultural Differences In Online Learning Motivation, Zongxiang Mei

Graduate Theses, Dissertations, and Problem Reports (ETD)

There are learning motivation differences among students from different countries. And differences between American and Korean online learners were identified. This study was to identify whether American and Chinese online learners' motivation differed and what were the learner characteristics that affected the motivation of online learners. This study was conducted in May-June, 2005, West Virginia University, the United States of America, and Fudan University, China. Findings revealed that there was a significant difference in learning motivation between the U.S. and Chinese online learners. And there were some learner characteristics affected the learning motivation of online learners as well, such as …

Go to article

Correlogram Method For Comparing Bio-Sequences, Gandhali P. Samant Dec 2005

Correlogram Method For Comparing Bio-Sequences, Gandhali P. Samant

Theses and Dissertations

Sequence comparison is one of the most primitive operations used in bio-informatics. It is used as a basis for many other complex manipulations in the field of Computational Molecular Biology. Many methods and algorithms were developed to compare and align sequences effectively. Most of these methods use linear comparison and some standard scoring schemes to calculate the similarity between sequences. We described an alternative approach to compare sequences based on the correlogram method. This method has already been used in the past for comparing images. By using the correlogram method, a sequence is projected on a 3-D space and the …

Go to article

Modeling And Control Of A Small Glass Furnace, Andrea R. Holladay Dec 2005

Modeling And Control Of A Small Glass Furnace, Andrea R. Holladay

Graduate Theses, Dissertations, and Problem Reports (ETD)

Most control systems currently used for glass furnaces monitor temperature with a thermocouple placed in the crown of the furnace and adjust the flow rate of the fuel to maintain a set point. The temperature measured is much closer to that of the combustion gasses within the furnace rather than the temperature of the glass. Models that predict the temperature of the glass are available in the form of complicated Computational Fluid Dynamics packages that are cost prohibitive to companies with small profit margins.;In this work, a simplified mathematical model has been developed to represent the dynamic performance of a …

Go to article

Optical Detection Of Multiple Faults Of A Mems Based Linear Comb Resonator, Lakshmi Deepasree Konduparthi Dec 2005

Optical Detection Of Multiple Faults Of A Mems Based Linear Comb Resonator, Lakshmi Deepasree Konduparthi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Investigating the dynamic behavior of any Micro Electro Mechanical system is critical for better control and fault prediction. Linear Comb Resonator is one such MEMS generic device that exhibits motion parallel to the plane of the chip. The dynamic motion of the Linear Comb Resonator is characterized by various parameters such as mass, force applied and also the stiffness constant of the flexure that holds the device. The aim of the project is to determine the changes caused by the asymmetry in the flexure design and the fluctuations in the behavior of the resonator due to this. The changes in …

Go to article

Computer Aided Detection Of Defects In Frp Bridge Decks Using Infrared Thermography, Gajanan M. Lonkar Dec 2005

Computer Aided Detection Of Defects In Frp Bridge Decks Using Infrared Thermography, Gajanan M. Lonkar

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this research is to develop a turn-key system that is able to interface with the FLIR ThermaCAM S60 infrared camera and automatically capture and analyze defects in infrared images of FRP bridge decks. Infrared thermography is one of the nondestructive evaluation (NDE) techniques that are being used to locate defects (debonds and delaminations) in bridge components. It is a rapid data collection and interpretation technique having high sensitivity and reliability. Analysis of infrared images by human interpretation is dependent on the users knowledge and hence introduces ambiguity in the defect detection process.;This thesis investigates the use of …

Go to article

Prosody In Text-To-Speech Synthesis Using Fuzzy Logic, Jonathan Brent Williams Dec 2005

Prosody In Text-To-Speech Synthesis Using Fuzzy Logic, Jonathan Brent Williams

Graduate Theses, Dissertations, and Problem Reports (ETD)

For over a thousand years, inventors, scientists and researchers have tried to reproduce human speech. Today, the quality of synthesized speech is not equivalent to the quality of real speech. Most research on speech synthesis focuses on improving the quality of the speech produced by Text-to-Speech (TTS) systems. The best TTS systems use unit selection-based concatenation to synthesize speech. However, this method is very timely and the speech database is very large. Diphone concatenated synthesized speech requires less memory, but sounds robotic. This thesis explores the use of fuzzy logic to make diphone concatenated speech sound more natural. A TTS …

Go to article

Stability Monitoring And Analysis Of Online Learning Neural Networks, Sampath Yerramalla Dec 2005

Stability Monitoring And Analysis Of Online Learning Neural Networks, Sampath Yerramalla

Graduate Theses, Dissertations, and Problem Reports (ETD)

On-line adaptation using soft-computational learning methods is on the rise for use in safety-critical applications such as fault-tolerant flight control, maintenance of distributed networks, implementation of high security devices, etc. The inapplicability of traditional analysis methods is limiting the wider use of soft-computational learning methods in safety-critical applications that involve online adaptation. The focus of the research is the development of non-conventional analysis techniques for the testing, verification, validation and analysis of adaptive learning components such as the online learning neural networks.;Our research considers stability of online adaptation as a heuristic measure of correctness in the operation of the adaptive …

Go to article

Towards Large Eddy Simulation Of Dispersed Gas -Liquid Two-Phase Turbulent Flows, Gusheng Hu Dec 2005

Towards Large Eddy Simulation Of Dispersed Gas -Liquid Two-Phase Turbulent Flows, Gusheng Hu

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study presents a detailed investigation of all essential components of computational and modeling issues necessary for a successful large-eddy simulation (LES) of dispersed two-phase turbulent flows. In particular, a two-layer concept is proposed to enable the LES capability in two-phase flows involving dispersed bubbles that are relatively large compared to the mesh size. The work comprises three major parts.;Part I focuses on the development and verification of a transient, three-dimensional, finite-volume-method (FVM) based accurate Navier-Stokes solver, named DREAM II (second generation of the DREAM code). Several high-order schemes are implemented for both the spatial and temporal discretization. Solution of …

Go to article

منظومة كبح تلقائیة لمركبة باستخدام المسیطر المضبب (Controller Fuzzy), Ahmed Sabah Abdul Ameer, Ahmed I. Al- Dolaimi, Haider Sabah Dec 2005

منظومة كبح تلقائیة لمركبة باستخدام المسیطر المضبب (Controller Fuzzy), Ahmed Sabah Abdul Ameer, Ahmed I. Al- Dolaimi, Haider Sabah

Iraqi Journal of Computers, Communications, Control and Systems Engineering

In this search, development the automatic brake system for the vehicle by using Fuzzy controller to avoid crashing the vehicle with any body in front of it such as body is station or move. The rated speed between the vehicle and the front body ahead of it and the distance between them, they be intendance for controller but the outer is brake torque which applied on to the tires. The propose controller can be sense the slipping which occur between the tires and the road surface during the stopping and trying to make the value of slip in the amount …

Go to article

Simulating Discriminatory Profiling, Oscar Neal Dec 2005

Simulating Discriminatory Profiling, Oscar Neal

Masters Theses

There is a concern that racial profiling is being used to invoke searches and stops in spite of its violation of the fourth amendment. Simulation methods are used to study the correlation test of stops, searches and citations with race, age, and gender. The design uses sensitivity analysis of inputs to determine their relationship to outputs statistics of a police department's citations and stops. Experimental results are than used to verify and predict departmental bias. A simulation program written in Visual Basic is used as a tool to explore simulation techniques. A formulation of simulation uses in studying discriminatory profiling …

Go to article

Recounting The Odds Of An Even Derangement, Arthur T. Benjamin, Curtis T. Bennett, Florence Newberger Dec 2005

Recounting The Odds Of An Even Derangement, Arthur T. Benjamin, Curtis T. Bennett, Florence Newberger

Mathematics, Statistics and Data Science Faculty Works

No abstract provided.

Go to article

Fractal Dimensions In Perceptual Color Space: A Comparison Study Using Jackson Pollock’S Art, Jonas R. Mureika Dec 2005

Fractal Dimensions In Perceptual Color Space: A Comparison Study Using Jackson Pollock’S Art, Jonas R. Mureika

Physics Faculty Works

The fractal dimensions of color-specific paint patterns in various Jackson Pollock paintings are calculated using a filtering process that models perceptual response to color differences (L*a*b* color space). The advantage of the L*a*b* space filtering method over traditional red-green-blue (RGB) spaces is that the former is a perceptually uniform (metric) space, leading to a more consistent definition of “perceptually different” colors. It is determined that the RGB filtering method underestimates the perceived fractal dimension of lighter-colored patterns but not of darker ones, if the same selection criteria is applied to each. Implications of the findings to Fechner’s “principle of …

Go to article

First Prev Next Last