Digital Commons Network^™

Suitability Review Of Common Synchronous, Live Online-Classroom Tools, Arnold Hensman

Conference Papers

While virtual learning environments (VLEs) such as Moodle and WebCT are now ubiquitous in most higher education institutes, live synchronous virtual classroom software is merely gaining in popularity. The first online meeting tools were tailored towards business requirements for remotely held meetings rather than educational purposes. The recent expansion of virtual classroom tools specific to education has changed this. Such software offers the standard features of streamed voice and video, yet purposely provides an array of additional features specifically designed to conduct classes online. While VLEs work optimally as a compliment to standard courses, Virtual-classrooms such as Adobe Connect Pro …

Intracellular Localisation, Geno- And Cytotoxic Response Of Poly N-Isopropylacrylamide (Pnipam) Nanoparticles To Human Keratinocyte (Hacat) And Colon Cells (Sw 480), Pratap Naha, Kunal Bhattacharya, Tiziana Tenuta, Kenneth Dawson, Iseult Lynch, Amaya Gracia, Fiona Lyng, Hugh Byrne

Articles

PNIPAM nanoparticles, with and without a covalentlylinked fluorescent label, were prepared by a free radical polymerisation technique. The cyto and genotoxicity of PNIPAM nanoparticles were analysed in two representative mammalian cell lines, SW480, a colon, and HaCaT, a dermal cell line. Physical characterisation in terms of particle size and zeta potential of the PNIPAM nanoparticles was carried out both in aqueous solution and in the appropriate cell culture media. Uptake and colocalisation of fluorescently labelled PNIPAM nanoparticles was monitored in both cell lines using confocal laser scanning microscopy. Genotoxicity analysis using the Comet assay was performed in both cell lines …

Wsm'10: Second Acm Workshop On Social Media, Susanne Boll, Steven C. H. Hoi, Roelof Van Zwol, Jiebo Luo

Research Collection School Of Computing and Information Systems

The ACM SIGMM International Workshop on Social Media (WSM'10) is the second workshop held in conjunction with the ACM International Multimedia Conference (MM'10) at Firenze, Italy, 2010. This workshop provides a forum for researchers and practitioners from all over the world to share information on their latest investigations on social media analysis, exploration, search, mining, and emerging new social media applications.

Cooperative Interaction Of Transcription Termination Factors With The Rna Polymerase Ii C-Terminal Domain, Bradley M. Lunde, Steve Reichow, Minkyu Kim, Hyunsuk Suh, Thomas C. Leeper, Fan Yang, Hannes Mutschler, Stephen Buratowski, Anton Meinhart, Gabriele Varani

Chemistry Faculty Publications and Presentations

Phosphorylation of the C-terminal domain of RNA polymerase II controls the co-transcriptional assembly of RNA processing and transcription factors. Recruitment relies on conserved CTDinteracting domains that recognize different CTD phosphoisoforms during the transcription cycle, but the molecular basis for their specificity remains unclear. We show that the CTD-interacting domains of two transcription termination factors, Rtt103 and Pcf11, achieve high affinity and specificity both by specifically recognizing the phosphorylated CTD and by cooperatively binding to neighboring CTD repeats. Single amino acid mutations at the protein-protein interface abolish cooperativity and affect recruitment at the 3′-end processing site in vivo. We suggest that …

Fall 2010: "Playaway" The Holidays, Dacus Library

Dacus Focus

No abstract provided.

Teacher Perceptions Of Disproportionality Of Minorities In Special Education, Kristy Henry Park

Doctoral Dissertations and Projects

The intent of this study was to determine if special education teachers had certain perceptions regarding the disproportionate amount of minorities in special education classes. I examined special education teachers' awareness of the disproportionality, their causal theories, and the effectiveness of Response to Intervention (RTI) to regulate disproportionality. I implemented three different data collection methods to measure the teachers' perceptions: an initial face-to-face interview session, a written survey, and additional interview questioning. Participants in the study included 11 special education teachers from three middle schools in Northern Georgia. Ten of the 11 teachers admitted awareness of the problem of disproportionality, …

Vlt Observations Of Ngc 1097'S “Dog-Leg” Tidal Stream: Dwarf Spheroidals And Tidal Streams, P. Galianni, F. Patat, James L. Higdon, S. Mieske, P. Kroupa

Physics & Astronomy: Faculty Publications

Aims. We investigate the structure and stellar population of two large stellar condensations (knots A & B) along one of the faint optical “jet-like” tidal streams associated with the spiral NGC 1097, with the goal of establishing their physical association with the galaxy and their origin.

Methods. We use the VLT/FORS2 to get deep V-band imaging and low-resolution optical spectra of two knots along NGC 1097's northeast “dog-leg” tidal stream. With this data, we explore their morphology and stellar populations.

Results. Spectra were obtained for eleven sources in the field surrounding the tidal stream. The great …

Extracting Physical And Environmental Information Of Irish Roads Using Airborne And Mobile Sensors, Salman Mumtaz

Doctoral

Airborne sensors including LiDAR and digital cameras are now used extensively for capturing topographical information as these are often more economical and efficient as compared to the traditional photogrammetric and land surveying techniques. Data captured using airborne sensors can be used to extract 3D information important for, inter alia, city modelling, land use classification and urban planning. According to the EU noise directive (2002/49/EC), the National Road Authority (NRA) in Ireland is responsible for generating noise models for all roads which are used by more than 8,000 vehicles per day. Accordingly, the NRA has to cover approximately 4,000 km of …

Anderson Localization As Position-Dependent Diffusion In Disordered Waveguides, Ben Payne, Alexey Yamilov, Sergey E. Skipetrov

Physics Faculty Research & Creative Works

We show that the recently developed self-consistent theory of Anderson localization with a position-dependent diffusion coefficient is in quantitative agreement with the supersymmetry approach up to terms of the order of 1 / g²₀ (with g₀ the dimensionless conductance in the absence of interference effects) and with large-scale ab initio simulations of the classical wave transport in disordered waveguides, at least for g₀ ≥ 0.5. In the latter case, agreement is found even in the presence of absorption. Our numerical results confirm that in open disordered media, the onset of Anderson localization can be viewed as …

Dynamical Conductivity At The Dirty Superconductor-Metal Quantum Phase Transition, Adrian Del Maestro, Bernd Rosenow, Jose A. Hoyos, Thomas Vojta

Physics Faculty Research & Creative Works

We study the transport properties of ultrathin disordered nanowires in the neighborhood of the superconductor-metal quantum phase transition. To this end we combine numerical calculations with analytical strong-disorder renormalization group results. The quantum critical conductivity at zero temperature diverges logarithmically as a function of frequency. In the metallic phase, it obeys activated scaling associated with an infinite-randomness quantum critical point. We extend the scaling theory to higher dimensions and discuss implications for experiments.

Erratum: Determination Of Structure Parameters In Strong-Field Tunneling Ionization Theory Of Molecules (Physical Review A (2010) 81 (033423)), Song-Feng Zhao, Cheng Jin, Anh-Thu Le, T. F. Jiang, C. D. Lin

Physics Faculty Research & Creative Works

There are several errors in Tables V and VI of our article. In Table V, the C_2m of the HOMO-1 (1π) of CO molecule should be 0.014. In Table VI, the binding energies of 2pπ_g and 2pπ_u of H₂⁺ should be 0.2267 and 0.4288, respectively.

Evaluation Of Computational Techniques For Solving The Boltzmann Transport Equation For Lattice Thermal Conductivity Calculations, Aleksandr V. Chernatynskiy, Simon R. Phillpot

Physics Faculty Research & Creative Works

Three methods for computing thermal conductivity from lattice dynamics (the iterative method, the variational method, and the relaxation-time approximation) are compared for the prototypical case of solid argon. The iterative method is found to produce results in close agreement with Green-Kubo molecular-dynamics simulations, a formally correct method for computing thermal conductivity. The variational method and relaxation-time approximation are found to underestimate the thermal conductivity. The relationship among the methods is established; a combination of the iterative and variational methods is found to have a fastest convergence. Formal convergence of the iterative method is demonstrated and a simple mixing rule is …

A Conversation With Eric Ghysels, Peter C. B. Phillips, Jun Yu

Research Collection School Of Economics

Eric Ghysels is the Bernstein Distinguished Professor of Economics and Professor of Finance at University of North Carolina at Chapel Hill. In 2008, Eric Ghysels and Robert Engle (2003 Nobel co-Laureate in Economic Science with Clive Granger) founded the Society for Financial Econometrics (SoFiE), establishing a global network of academics and practitioners dedicated to the fast-growing field of financial econometrics. In June 2010, Eric visited the Centre for Financial Econometrics (CoFiE) and the Sim Kee Boon Institute (SKBI) of Financial Economics at Singapore Management University. During his visit we conversed with him about SoFiE and the growing toolroom of financial …

Formative Assessment Practice In Health Science Education, Shreemathi S. Mayya

Internet Journal of Allied Health Sciences and Practice

To explore the extent of practices of formative assessment in health science education, a self-report questionnaire was administered to faculty members of nursing and allied health sciences of a south India university. Simple percentages were computed to explore the extent of practice of formative assessment and the ways in which it is currently used to help students learn in nursing and allied health science courses. The study revealed that there is room for improvement in the way formative assessment is practiced currently in health science education.

Review Of: The Integrated Nervous System: A Systematic Diagnostic Approach, Mary B. Downs

Internet Journal of Allied Health Sciences and Practice

Written by a neuroanatomist, a pediatric neurologist, and an adult neurologist, The Integrated Nervous System is a problem-based text written for an introductory neuroscience course for medical and allied health students. The format is patient-centered and focuses on the effects of neurological disorders, the methodology of diagnosis, and patient outcomes. This book is unusual in the field of neuroscience texts in that, in addition to teaching basic and clinical neuroscience, it also stresses the psychological and psychosocial problems of neurological patients and the roles of various health care professionals in treatment and rehabilitation.

The Stories They’D Tell: Pre-Service Elementary Teachers Writing Stories To Demonstrate Physical Science Concepts, Jennifer Kreps Frisch

Faculty Articles

Preservice teachers enrolled in a science content-based course wrote stories that could help their future students understand a science concept. First, participants chose their topic and wrote the story with few guidelines to establish a baseline. In the next part, a different set of students were given a choice of three topics (based on force, electricity, and heat misconceptions), and collaborated to write stories with guidance from the instructor. Stories were analyzed for narrative and science units, and test scores examined. Without guidance, many students struggled to find ways to integrate science within a story. With guidance, participants wrote stories …

Science, Justice, Science Fiction: A Conversation With Kim Stanley Robinson, Gerry Canavan, Lisa Klarr, Ryan Vu

English Faculty Research and Publications

No abstract provided.

Detecting Photographic Composites Of Famous People, Eric Kee, Hany Farid

Computer Science Technical Reports

Photos are commonly falsified by compositing two or more people into a single image. We describe how such composites can be detected by estimating a camera's intrinsic parameters. Differences in these parameters across the image are then used as evidence of tampering. Expanding on earlier work, this approach is more applicable to low-resolution images, but requires a reference image of each person in the photo as they are directly facing the camera. When considering composites of famous people, such a reference photo is easily obtained from an on-line image search.

Digital Television Broadcast Adoption In Latin America, Deb Tech, Jack Walters

Research & Publications

This paper proposes a model of the decision factors used by countries to decide which digital television (DTV) broadcast standard to adopt. The focus is on countries in Latin America that are in the midst of adopting and/or implementing new standards. This paper uses a multiple case study approach and independent inter-rater techniques to extract a set of decision factors used by four Latin American countries to select a digital broadcast television standard. Two decision factors expected by the researchers were confirmed. In addition, two additional decision factors were identified. This research is valuable in developing a deeper understanding of …

Electroencephalogram Artifact Removal Using A Wavelet Neural Network, Hoang-Anh T. Nguyen

Electrical & Computer Engineering Theses & Dissertations

A wavelet neural network (WNN) technique rs developed for electroencephalogram (EEG) artifact removal without electrooculographic (EOG) recordings. The algorithm combines the universal approximation characteristics of neural networks and the time/frequency property of wavelet, where the neural network was trained on a simulated dataset with known ground truths. The contribution of this thesis is two-fold. First, many EEG artifact removal algorithms, including regression based methods, require reference EOG signals, which are not always available. To remove EEG ai1ifacts, a WNN tries to learn the characteristics of the artifacts first and does not need reference EOG signals once trained. Second, WNNs are …

Facile Pyrolytic Synthesis Of Silicon Nanowires, Joo C. Chan, Hoang Tran, James W. Pattison, Shankar B. Rananavare

Chemistry Faculty Publications and Presentations

One-dimensional nanostructures such as silicon nanowires (SiNW) are attractive candidates for low power density electronic and optoelectronic devices including sensors. A new simple method for SiNW bulk synthesis[1, 2] is demonstrated in this work, which is inexpensive and uses low toxicity materials, thereby offering a safe, energy efficient and green approach. The method uses low flammability liquid phenylsilanes, offering a safer avenue for SiNW growth compared with using silane gas. A novel, duo-chamber glass vessel is used to create a low-pressure environment where SiNWs are grown through vapor-liquid-solid mechanism using gold nanoparticles as a catalyst. The catalyst decomposes silicon precursor …

Fragmentation Of Chloroperoxides: Hypochlorite-Mediated Dehydration Of Hydroperoxyacetals To Esters, Thomas J. Fisher, Patrick Dussault

Patrick Dussault Publications

Hypochlorites efficiently dehydrate hydroperoxyacetals to furnish the corresponding esters. The reaction, which can be accomplished with stoichometric Ca(OCl)₂ or with catalytic amounts of t-BuOCl, appears to involve formation and heterolytic fragmentation of secondary chloroperoxides, species not previously described in solution chemistry.

Includes Supporting Information (52 pp).

Quality Of Life Despite Back Pain: A Phenomenological Study, Margaret B. Blair

College of Education and Human Sciences: Dissertations, Theses, and Student Research

The investigator in this phenomenological study examined the lived experience of Quality of Life (QOL) in 15 Registered Nurses (RNs) with chronic back pain (CBP) participating in structured journal writing. Hermeneutic analysis of interviews and journals revealed eight themes under two domains: Making Normal (Fighting and Denying; Being Consumed: Anger and Frustration; Surviving the Three Ds: depression, devastation, and despair; and Choosing, Adapting, and Accepting) and Living with the Shadow (Losses and Limitations, Being Less than Whole, Having Intimate Knowledge, and Living Through Fatigue). The essence of the experience is Dancing with the Shadow: Re-Visioning Quality of Life. The Shadow …

The Waterfalls Of Kauai, Hawaii, Darryll T. Pederson

Department of Earth and Atmospheric Sciences: Faculty Publications

Everyone enjoys the sounds and sights of a tropical waterfall. They are the setting for romantic and action packed movies. Fantasy Island used Wailua Falls on Kauai to open their weekly TV series. From a different viewpoint waterfall origin and evolution has been attributed to a wide range of geologic processes. The Hawaiian Island's waterfalls and amphitheater-headed valleys have been cited by many as equivalent to similar features seen on Mars. After a number of years of studying these features on Kauai, I offer the following thoughts and observations about Kauai's waterfalls and amphitheater-headed valleys.

Continental Warming Preceding The Paleocene–Eocene Thermal Maximum, Ross Secord, Philip D. Gingerich, Kyger C. Lohmann, Kenneth G. Macleod

Department of Earth and Atmospheric Sciences: Faculty Publications

Marine and continental records show an abrupt negative shift in carbon isotope values at ~55.8 Myr ago. This carbon isotope excursion (CIE) is consistent with the release of a massive amount of isotopically light carbon into the atmosphere and was associated with a dramatic rise in global temperatures termed the Paleocene–Eocene thermal maximum (PETM). Greenhouse gases released during the CIE, probably including methane, have often been considered the main cause of PETM warming. However, some evidence from the marine record suggests that warming directly preceded the CIE, raising the possibility that the CIE and PETM may have been linked to …

Leadership And The Professional Learning Community, Sandra L. Gaspar

Department of Educational Administration: Dissertations, Theses, and Student Research

The purpose of this study was to describe the transformation of one small, rural school district’s professional development program. The study focused on the actions that school leaders took to replace a traditional, workshop-based program that was deemed ineffective with a new professional development model. The new model was designed to create professional learning communities by taking advantage of and further developing teacher leadership.

Within this mixed-methods case study, both survey data and interview data were collected. The study describes (a) internal and external factors that influenced the change, (b) selection and implementation of the model, (c) the cycle of …

Synthesis And Analysis Of N-Acetyltyrosine-N-Ethyl Amide From N-Acetyl Yyrosine Ethyl Ester, Ravinder Reddy Akkuluri

All Capstone Projects

Amino acids gets oxidized when they are interacted with oxygen and light. And it is always difficult for the researchers to find and isolate a particular amino acid from a protein, unless they completely know how it behaves when interacted with light. For this we are synthesizing amide form of the amino acid which mimics the structure of a protein, and we induce light and find out the exact behavior of the particular amino acid. Here, the aim is to know the tyrosine interaction with light, so we synthesize amide form of tyrosine which is N-Acetyl tyrosine ethyl amide from …

Synthesis And Characterization Of An Europium-Porphyrin Complex, Alejandro Blinder

All Capstone Projects

Photodynamic therapy (PDT) is a promising treatment that has continued to improve over the past thirty years when the first commercially approved photosensitizer (PS) was introduced. Although PDT has many successful applications, the terrifying number of new cancer cases reported each year makes scientists focus their efforts towards the development of new efficient PS for PDT. The biggest obstacle that prohibits PDT from becoming a more widely used therapy is the ineffective photosensitizers (PS) that are available on the market today. The purpose of this study was to evaluate the synthesized metal-porphyrin complex as a possible candidate as a PS. …

Solvent Effects On Emission Spectra Of Carminic Acid And Determination Of Its Ground And Excited State Dipole Moments, Sarika B. Jaggannagari

All Capstone Projects

Absorption and fluorescence emission spectra of Carminic acid were recorded in solvents with different solvent parameters like polarities, dielectric constant and refractive index. The solvents used in the experiment were water, DMSO, acetonitrile, methanol, propanol and butanol. The atomic radius of the molecule was found out using Hartree-Fock method in molecular modeling using Spartan software and it is applied to find out the dipole moments. The dipole moments of Carminic acid in the ground state and excited states have been determined and Solvatochromic shift method has been used to determine the excited state dipole moments. The linear progressions were made …

Online Bookstore Web Application For Governors State University, Jayaram Rayudu Gudapati

All Capstone Projects

The Online Bookstore is a full-scale; enterprise level application which shall be built with ASP.NET web technologies and Microsoft Office Access database. It is a fully functional online store that you may use as a framework to create an expanded system. In this bookstore you can find a wide variety of books depending on the category we select. And also there is a feature such as Advanced search in order to get a particular book of our choice based on title, author, category or price tag.