Digital Commons Network^™

The Mainstream Scientific Community Is Open To Incremental But Not Holistic Ideas, Maurice Goodman

Articles

NeuroQuantology

doi: 10.14704/nq.2017.15.2.1041

Broadband Acoustic Measurement Of The Agar-Based Tissue Mimicking Material: A Longitudinal Study, A. Rabell-Montiel, Jacinta Browne, S. D. Pye, T. A. Anderson, C. Moran

Articles

Commercially available ultrasound quality assurance test phantoms rely on the long-term acoustic stability of the tissue-mimicking-material (TMM). Measurement of the acoustic properties of the TMM can be technically challenging, and it is important to ensure its stability. The standard technique is to film-wrap samples of TMM and to measure the acoustic properties in a water bath. In this study, a modified technique was proposed whereby the samples of TMM are measured in a preserving fluid that is intended to maintain their characteristics. The acoustic properties were evaluated using a broadband pulse-echo substitution technique over the frequency range 4.5–50 MHz at …

N-Isopropylacrylamide-Based Photopolymer For Holographic Recording Of Thermosensitive Transmission And Reflection Grating, Tatsiana Mikulchyk, Suzanne Martin, Izabela Naydenova

Articles

In recent years, functionalized photopolymer systems capable of holographic recording are in great demand due to their potential use in the development of holographic sensors. This work presents a newly developed Nisopropylacrylamide(NIPA)-based photopolymer for holographic recording in reflection and transmission modes. The optimized composition of the material is found to reach refractive index modulation of up to 5  10-3 and 1.6  10-3 after recording in transmission and reflection mode, respectively. In addition to fulfilling the requirements for holographic recording materials, the NIPA-based photopolymer is sensitive to temperature and has lower toxicity than acrylamide-based photopolymers. Possible application of the …

Ltl Type Nanozeolites Utilized In Surface Photonics Structures For Environmental Sensors, Sabad-E Gul, Dervil Cody, Suzanne Martin, John Cassidy, Izabela Naydenova, Anastasia Kharchenko, Svetlana Mintovab

Articles

Environmental monitoring has been continuously increasing due to an emerging global emphasis on the importance of sustainable development. Improving water quality monitoring and control is a challenge that calls for innovative solutions. Current methods of water monitoring are costly and analytical techniques suitable for field use are limited. There is a need for accurate, long–term monitoring of environmental contaminants using sensors that can be operated on site. The aim of our research is to theoretically model, fabricate and characterise holographic sensors for water quality monitoring that are simple to operate, capable of sensing copper present in fresh water and have …

Theoretical Modelling And Design Of Photonic Structures In Zeolite Nanocomposites For Gas Sensing: Part I - Surface Relief Gratings, Dervil Cody, Izabela Naydenova

Articles

The suitability of holographic structures fabricated in zeolite nanoparticle-polymer composite materials for gas sensing applications has been investigated. Theoretical modelling of the sensor response (i.e. change in hologram readout due to a change in refractive index modulation or thickness as a result of gas adsorption) of different sensor designs was carried out using Raman-Nath theory and Kogelnik’s Couple Wave Theory. The influence of a range of parameters on the sensor response of holographically-recorded surface and volume photonic grating structures has been studied, namely phase difference between the diffracted and probe beam introduced by the grating, grating geometry, thickness, spatial frequency, …

Development And Characterisation Of A Bath-Based Vertical Blackbody Cavity Calibration Source For The Range −30 °C To 150 °C, Sam Boles, Igor Pušnik, Dubhaltach Mac Lochlainn, David Fleming, Izabela Naydenova, Suzanne Martin

Articles

Industrial use of Radiation Thermometers (RTs) is becoming increasingly common due to the perceived advantages and wide market availability. Blackbody Cavity Radiation Sources (BCRSs) are typically used for calibration of these instruments, and these cavities are oriented horizontally in most cases. For BCRSs based in thermal baths, this necessitates the use of custom-built baths with side openings. This paper presents a unique design of vertical bath-based BCRS that may be immersed in conventional calibration baths without modifications to the baths. The method, results, and analysis of an international comparison comparing this vertical BCRS, standard horizontal BCRSs, and a previous iteration …

Development And Testing Of Low Spatial Frequency Holographic Concentrator Elements For Collection Of Solar Energy, Hoda Akbari, Izabela Naydenova, Hind Ahmed, Sarah Mccormack, Suzanne Martin

Articles

The aim of this research is to use holographically recorded diffractive optical elements (DOEs) recorded in photopolymer in order to effectively collect and concentrate solar radiation. The potential for recording high diffraction efficiency DOEs with a large angular and wavelength range of operation in acrylamide based photopolymer and the optimum recording conditions have been presented in our previous work (Akbari et al., 2014b, 2014a). Theoretical modelling and experimental test are presented which demonstrate that low spatial frequency components, around 300 line pairs/mm, have an appropriate spectral bandwidth, high efficiency and very limited polarization dependence. Pairs of concentrating off-axis lenses are …

Evaluation Of The Effect Of Plasma Treatment Frequency On The Activation Of Polymer Particles, Hisham Abourayana, Vladimir Milosavljevic, Peter Dobbyn, Denis Dowling

Articles

This study investigates the influence of treatment frequency (1–150 kHz) on the atmospheric plasma activation of both silicone and polyethylene terephthalate (PET) particles. These polymer particles with diameters in the range 3–5 mm, were treated using either helium or helium/oxygen gas mixtures, in a barrel atmospheric plasma system. The level of polymer particles activation was monitored using water contact angle measurements. The effect of plasma treatment frequency on barrel heating was monitored using an infrared thermographic camera, the maximum barrel temperature after 15 min treatment was found to be 98 °C at a frequency of 130 kHz. Optical emission spectroscopy …

Evaluation Of A Reel-To-Reel Atmospheric Plasma System For The Treatment Of Polymers, Kate O'Flynn, Vladimir Milosavljevic, Peter Dobbyn, Denis Dowling

Articles

Plasma treatments are widely used to enhance the surface energy of polymers prior to bonding or the application of functional coatings. This study investigates the performance of a linear atmospheric pressure plasma source for the reel-to-reel treatment of polymer webs. The continuous argon plasma treatments were carried out on 15 cm diameter polyethylene terephthalate (PET) web substrates using the linear plasma source (Plamax), operating at 13.56 MHz. The study investigated how the processing parameters influenced the effectiveness of the plasma treatment in enhancing both the polymer web's water contact angle (WCA) and surface energy (SE). Based on these measurements the …

The Aging Human Heart. Doppler Echocardiographic Assessment Of The Resting Adult Heart Across The Age Bands., Anthony Ryan

Masters

Objectives: To determine the influence of aging on measured left ventricular (LV) diastolic parameters using healthy subjects aged 40-79 years. To propose age-related reference values for LV filling pressure, LV isovolumic relaxation time (LV IVRT) and myocardial stiffness index for each decade using pulsed waved tissue Doppler.

Background: Pulsed wave tissue Doppler parameters have been used for over a decade in the clinical setting as an aid to the evaluation of diastolic function and filling pressures, however there is limited information on normal reference ranges especially in middle age and the older person.

Methods: Subjects with no …

Time-Varying And Constant Switching Frequency-Based Sliding-Mode Control Methods For Transformerless Dvr Employing Half-Bridge Vsi, Hasan Komurcugil, Samet Biricik

Articles

This paper presents time-varying and constant switching frequency based sliding-mode control (SMC) methods for three-phase transformerless dynamic voltage restorers (TDVRs) which employ half-bridge voltage source inverter. An equation is derived for the time-varying switching frequency. However, since the time-varying switching frequency is not desired in practice, a smoothing operation is applied to the sliding surface function within a narrow boundary layer with the aim of eliminating the chattering effect and achieving a constant switching frequency operation. The control signal obtained from the smoothing operation is compared with a triangular carrier signal to produce the pulse width modulation signals. The feasibility …

A Fast Linear Electro-Optical Effect In A Non-Chiral Bent-Core Liquid Crystal, Yuri Panarin, S.P. Sreenilayam, J.K. Vij, A. Lehmann, C. Tschierske

Articles

We report the observation of an electro-optical effect for a linear rotation of the optical axis as function of the electric field in an achiral tilted bent-core liquid crystalline compound, in which 4-cyanoresorcinol bisbenzoate core is symmetrically terminated by long linear alkyl chains (n =16) on both ends. The linear electro-optic effect observed in this material is similar to the deformed helical ferroelectric liquid crystal (DHFLC) effect reported previously in a FLC material except that dimensions of the helical pitch differ by two orders of magnitude. In the chiral systems, the helical pitch usually lies on the scale of sub-optical …

Common Data Set, 2016-2017, Planning, Research, And Policy Analysis

Common Data Set (2001-present)

Common Data Set 2016-2017 for Illinois State University

2017 Viewbook, Office Of Admissions

Viewbook

Technology and science are the future. They are changing faster than ever and the possibilities are amazing. They are the tools that change the world. IMSA’s mission is to ignite “creative, ethical, scientific minds that advance the human condition.” We are a diverse community focused on student-centered education. We’re about more than great college prospects and great jobs; we’re about making our families proud. We’re about a better world for everyone. A world that needs a wealth of the kind of thinkers IMSA produces to solve real problems. IMSA’s mission isn’t to fix the world. It’s to nurture the minds …

Red Note New Music Festival Program, 2017, School Of Music

Red Note New Music Festival

The RED NOTE New Music Festival at Illinois State University is a week-long event which features outstanding performances of contemporary concert music.

Developments In Capture- Γ Libraries For Nonproliferation Applications, A. M. Hurst, R. B. Firestone, B. W. Sleaford, D. L. Bleuel, M. S. Basunia, F. Becvar, T. Belgya, L. A. Bernstein, J. J. Carroll, B. Detwiler, J. E. Escher, C. Genreith, B. L. Goldblum, M. Krticka, A. G. Lerch, David A. Matters, John W. Mcclory, Stephen R. Mchale, Zs. Revay, L. Szentmiklosi, D. Turkoglu, A. Ureche, J. Vulic

Faculty Publications

The neutron-capture reaction is fundamental for identifying and analyzing the γ-ray spectrum from an unknown assembly because it provides unambiguous information on the neutron-absorbing isotopes. Nondestructive-assay applications may exploit this phenomenon passively, for example, in the presence of spontaneous-fission neutrons, or actively where an external neutron source is used as a probe. There are known gaps in the Evaluated Nuclear Data File libraries corresponding to neutron-capture γ-ray data that otherwise limit transport-modeling applications. In this work, we describe how new thermal neutron-capture data are being used to improve information in the neutron-data libraries for isotopes relevant to nonproliferation applications. We …

The Circular Logic Of Actavis, Joshua B. Fischman

American University Law Review

No abstract provided.

Developing A General Methodology For Evaluating Composite Action In Insulated Wall Panels, Taylor Sorensen

Faculty Publications

Precast concrete sandwich wall panels (PCSWPs) have been in use for over 60 years. They provide a very efficient building envelope for many buildings. Characteristic PCSWPs comprise an outer and inner layer (or wythe) of concrete separated by an insulating material. To use all of the material as efficiently as possible, the layers are attached by connectors which penetrate through the insulating layer and are embedded in either concrete wythe. These connectors make it possible for both layers of the wall to work together when resisting loads. The connectors are made out of plastic, or FRP, to prevent heat transfer …

Chinese International Students In A Northwest University: Investigating Cultural Academic Learning And Teaching Preferences, Michael L. Bevis

Theses and Dissertations

As Chinese international students on American university campuses continue to rise, the importance of these institutions to accommodate the students in adapting to a different academic culture has become more critical. On a public, coeducational research university located in the Pacific Northwest, a concurrent triangulated mixed method research design was implemented to investigate cultural factors with preferred learning and teaching styles of Chinese international students along with what corroborative descriptions these students provide as effective learning experiences in American college classrooms.

The study brought attention to Chinese international students’ differing cultural values from the previous literature understanding, it supported previous …

Evaluating The Attitudes Of Preservice Teachers Toward Multicultural Competence, Angela D. Marshall

Theses and Dissertations

Changes in the ethnicity of the student population across the nation necessitated a change in teacher education curricula. This explanatory, sequential, mixed-method study examined how a group of preservice teachers viewed the importance of multicultural competence before and after student teaching. Specifically, an evaluation of preservice teachers’ attitudes about their own multicultural preparedness was made prior to and after being given full responsibility for an ethnically diverse classroom.

The study employed quantitative and qualitative measures to assess preservice teachers’ levels of multicultural competence as well as their awareness of self-perceptions of multicultural competence that contribute to attitudes toward teaching an …

Effects Of A Peer-Tutoring System Utilizing Students With Emotional Behavioral Disorders As Tutors And Students With Intellectual Disabilities As Tutees, Vicki Koslin Howell

Theses and Dissertations

High school students with intellectual disabilities often find appropriate ways and times to socialize with their peers. In self-contained settings, students are often limited to interacting with only those within the classroom. In addition, students with emotional behavioral disorders often have deficits in social domains and in self-esteem. Improving socializations of students with disabilities has always been a concern of both parents and teachers. Peer-mediated learning has been a proven effective way to instruct students with disabilities. Placing a student with an emotional behavioral disorder in the position of a peer tutor allows them to feel more secure in their …

Examining The Relationship Between Virtual School Size And Student Achievement, Sherrill Waddell

Theses and Dissertations

The purpose of this study is to examine the relationship between virtual school size and student achievement in virtual schools in a southwestern state. Enrollment size and the following areas were studied in an attempt to determine student achievement: STAAR English Language Arts/Reading, STAAR Math, STAAR Science, and STAAR Social Studies testing scores in regards to race. This quantitative study used nonexperimental research utilizing a distribution approach. The effect of virtual school size on student achievement in a southwestern state was examined. Specifically, student achievement was defined by student passing rates on individual tests of the STAAR examination. This research …

Factors In The Admissions Process Influencing Persistence In A Master’S Of Science Program In Marine Science, Melissa L. Dore

Theses and Dissertations

Factors in the Admissions Process Influencing Persistence in a Master’s of Science Program in Marine Science. Melissa L. Dore, 2017: Applied Dissertation, Nova Southeastern University, Abraham S. Fischler College of Education. Keywords: academic persistence, admission counseling, graduate students, marine science education, examinations This applied dissertation was conducted to provide the graduate program in marine sciences a valid predictor for success in the admissions scoring systems that include the general Graduate Record Exam. The dependent variable was persistence: successfully graduating from the marine sciences master’s programs. This dissertation evaluated other values including the applicant’s age, gender, undergraduate GPA, letters of recommendation, …

University Research Development Offices: Perceptions And Experiences Of Research University Administrators, Roxana Ross

Theses and Dissertations

Universities are struggling to keep up with the cost of doing research. Some are searching for new ways to improve their likelihood of getting grant funding to support their research efforts. As a function of the academic research enterprise, research development offices and research development staff at universities utilize specific activities to enhance grant funding success and support university research goals. This study examines university research development activities and research development offices to determine if formal research development offices are perceived to have value and what research development activities are most impactful. The issue of fair measures of success for …

The Black Male's Perception Of Academic Success In The Black Belt Region, Lisa M. Morenzoni

Theses and Dissertations

The purpose of this applied dissertation was to explore the perceptions of academic success of Black males in the Black Belt in an effort for educators and community members to better understand and meet the needs of young Black men. In this study, the researcher conducted one 60-minute interview followed by one confirming interview with nine former students (Appendix D) who graduated from the local area high school. Interview questions (Appendix B) were developed by the researcher based on the research questions in the study. These use of these questions assisted in understanding the perceptions of academic success of these …

Teachers’ Perspectives: Exploring The Reading Gender Gap Among Elementary School Boys, Teleshia Jones

Theses and Dissertations

Teachers’ Perspectives: Exploring the Reading Gender Gap Among Elementary School Boys. Teleshia Mincey-Jones, 2016: Applied Dissertation, Nova Southeastern University, Abraham S. Fischler College of Education. Keywords: academic achievement, achievement gap, elementary education, reading readiness, gender differences.

Reading mastery is essential for academic success. As an emphasis is placed on more rigor in education, some boys are being left behind in the area of reading. School districts are adopting new rigorous standards and transitioning to produce students who are career and college ready upon graduation. Girls are responding positively and thriving academically; yet, boys continue to underperform girls at the district, …

Perceptions Of Contributions Of Business Coaches To Female Entrepreneurial Success, Tracy I. Timberlake

Theses and Dissertations

Although coaching has seen tremendous growth and success, it is still regarded as controversial because there is no governing body that oversees coaches or the coaching industry. In this manner, the industry has not achieved uniformity, therefore is under much scrutiny with regards to the validity of the industry as a whole. With female entrepreneurship on the rise, many industry personnel are hiring business coaches to teach them the business building skills they need to start their solo ventures. This study aimed to understand the perceptions of the one-on-one business coaching experience from the perspective of the client. Because there …

Graduate Survey, 2016-2017, Hart Career Center, Illinois Wesleyan University

First Destination Survey

No abstract provided.

International Regulatory Entrepreneurship: Uber’S Battle With Regulators In France, Domenic J. Martini

San Diego International Law Journal

Uber is a regulatory entrepreneur: a company that seeks to change the law in its favor. In the United States, Uber’s regulatory entrepreneurship changed the American taxi industry and the laws that regulate it. But the company’s venture into France presented unique challenges. This Comment examines Uber’s regulatory entrepreneurship in France and analyzes the factors that hindered Uber’s quest to revolutionize the French taxi industry. It discusses the tension between Uber and the French government and the policies behind both sides’ goals. It also seeks a compromise between Uber and the French regulators: one that acknowledges the issues with both …

Shortest Connection Networks On Triangular Grids, Jie Mei

Open Access Master's Theses

The shortest path problem, or the Steiner problem, is an interesting problem with numerous real-world applications. Historically the Steiner problem has been studied for the Euclidean plane and for rectilinear distances. Both problems have been proven to be NP-hard. In this research, we look into the Steiner problem on a triangular grid and show that the problem is NP-hard. We explore exact algorithms for constructing a shortest network that optimally interconnects a set of terminal points on a grid. Moreover, we look at a heuristic algorithm to solve the problem and provide a conjecture on the bound of the approximation …