Digital Commons Network^™

Carrier-Envelope-Phase-Induced Asymmetries In Double Ionization Of Helium By An Intense Few-Cycle Xuv Pulse, Jean Marcel Ngoko Djiokap, N. L. Manakov, A. V. Meremianin, Anthony F. Starace

Anthony F. Starace Publications

The carrier-envelope-phase (CEP) dependence of electron angular distributions in double ionization of He by an arbitrarily polarized, few-cycle, intense XUV pulse is formulated using perturbation theory (PT) in the pulse amplitude. Owing to the broad pulse bandwidth, interference of first- and second-order PT amplitudes produces asymmetric angular distributions sensitive to the CEP. The PT parametrization is shown to be valid by comparing with results of solutions of the full-dimensional, two-electron time-dependent Schrödinger equation for the case of linear polarization.

Harmonic Generation Spectroscopy With A Two-Colour Laser Field Having Orthogonal Linear Polarizations, T. S. Sarantseva, M. V. Frolov, N. L. Manakov, M. Yu. Ivanov, Anthony F. Starace

Anthony F. Starace Publications

The interpretation of many high-order harmonic generation (HHG) experiments is based on the assumption that the HHG yield of an atom can be factorized into (i) a laser-dependent ‘electron wave packet’ with rather simple properties, including a nearly universal shape, and (ii) an atomic photorecombination cross section. We show that this factorization is restricted to linearly polarized laser fields and fails in two-colour laser fields with orthogonal polarizations. At the same time, we show how two-colour HHG spectroscopy using orthogonally polarized intense fundamental and relatively weak second harmonic fields makes a complete experiment possible that enables the retrieval of the …

The Misbegotten Judicial Resistance To The Daubert Revolution, David E. Bernstein

Notre Dame Law Review

This Article reviews the history of the evolution of the rules for the admissibility of expert testimony since the 1980s, the revolutionary nature of what ultimately emerged, and the consistent efforts by recalcitrant judges to stop or roll back the changes, even after Rule 702 was amended to explicitly incorporate a strict interpretation of those changes.

Part I reviews the law of expert testimony through the Supreme Court’s Daubert decision. Critics had charged for decades that the adversarial system was a failure with regard to expert testimony. Parties to litigation, they argued, often presented expert testimony of dubious validity because …

Preferential Scattering By Interfacial Charged Defects For Enhanced Thermoelectric Performance In Few-Layered N-Type Bi2te3, Pooja Puneet, Ramakrishna Podila, Mehmet Karakaya, Song Zhu, Jian He, Terry M. Tritt, Mildred S. Dresselhaus, Apparao Rao

Publications

Over the past two decades several nano-structuring methods have helped improve the figure of merit (ZT) in the state-of-the art bulk thermoelectric materials. While these methods could enhance the thermoelectric performance of p-type Bi₂Te₃, it was frustrating to researchers that they proved ineffective for n-type Bi₂Te₃ due to the inevitable deterioration of its thermoelectric properties in the basal plane. Here, we describe a novel chemical-exfoliation spark-plasma-sintering (CE-SPS) nano-structuring process, which transforms the microstructure of n-type Bi₂Te₃ in an extraordinary manner without compromising its basal plane …

High-Resolution Near-Infrared Spectroscopy Of Hd 100546. Ii. Analysis Of Variable Rovibrational Co Emission Lines, Sean D. Brittain, Joan Najita, John S. Carr, Joseph Liskowsky, Matthew R. Troutman, Greg W. Doppmann

Publications

We present observations of rovibrational CO in HD 100546 from four epochs spanning 2003 January through 2010 December. We show that the equivalent widths of the CO lines vary during this time period with the v = 1–0 CO lines brightening more than the UV fluoresced lines from the higher vibrational states.While the spectroastrometric signal of the hot band lines remains constant during this period, the spectroastrometric signal of the v = 1–0 lines varies substantially. At all epochs, the spectroastrometric signals of the UV fluoresced lines are consistent with the signal one would expect from gas in an axisymmetric …

High-Resolution Near-Infrared Spectroscopy Of Hd 100546. I. Analysis Of Asymmetric Ro-Vibrational Oh Emission Lines, Joseph Liskowsky, Sean D. Brittain, Joan R. Najita, John S. Carr, Greg W. Doppman, Matthew R. Troutman

Publications

We present observations of ro-vibrational OH and CO emission from the Herbig Be star HD 100546. The emission from both molecules arises from the inner region of the disk extending from approximately 13 AU from the central star. The velocity profiles of the OH lines are narrower than the velocity profile of the [O i] λ6300 line, indicating that the OH in the disk is not cospatial with the Oi. This suggests that the inner optically thin region of the disk is largely devoid of molecular gas. Unlike the ro-vibrational CO emission lines, the OH lines are highly asymmetric. We …

Kennedy Lecture | Leonardo And Steve The Young Genius Who Beat Apple To Market By 800 Years, Nov 12, Ohio University College Of Arts & Sciences

All Forum Articles

No abstract provided.

Teaching Behavior And Well-Being In Students: Development And Concurrent Validity Of An Instrument To Measure Student-Reported Teaching Behavior, Patrick Pössel, Kathleen Moritz Rudasill, Jill L. Adelson, Annie C. Bjerg, Don T. Wooldridge, Stephanie Winkeljohn Black

Department of Educational Psychology: Faculty Publications

Teaching behavior has important implications for students’ emotional well-being. Multiple models suggest students’ perceptions of teaching behaviors are more critical than other measures for predicting well-being, yet student-report instruments that measure concrete and specific teaching behavior are limited. The purpose of the present studies is to develop an instrument to assess students’ perceptions of concrete and specific teaching behavior and to test which teaching behavior is associated students’ well-being. Construct validity and internal consistency for the 37-item Teaching Behavior Questionnaire (TBQ-S), composed of instructional, negative teaching, socioemotional, and organizational behavior were examined using data from two independent samples (Study 1: …

Solution Scattering And Fret Studies Of Nucleosomes Reveal Dna: Unwrapping Effects Of H3 And H4 Tail Removal, Kurt Andresen, Isabel Jimenez-Useche, Steven C. Howell, Chongli Yuan, Xiangyun Qiu

Physics and Astronomy Faculty Publications

Using a combination of small-angle X-ray scattering (SAXS) and fluorescence resonance energy transfer (FRET) measurements we have determined the role of the H3 and H4 histone tails, independently, in stabilizing the nucleosome DNA terminal ends from unwrapping from the nucleosome core. We have performed solution scattering experiments on recombinant wild-type, H3 and H4 tail-removed mutants and fit all scattering data with predictions from PDB models and compared these experiments to complementary DNA-end FRET experiments. Based on these combined SAXS and FRET studies, we find that while all nucleosomes exhibited DNA unwrapping, the extent of this unwrapping is increased for nucleosomes …

Isosteric And Nonisosteric Base Pairs In Rna Motifs: Molecular Dynamics And Bioinformatics Study Of The Sarcin–Ricin Internal Loop, Marek Havrila, Kamila RéBlová, Craig L. Zirbel, Neocles B. Leontis, JiřÍ ŠPoner

Chemistry Faculty Publications

The sarcin-ricin RNA motif (SR motif) is one of the most prominent recurrent RNA building blocks that occurs in many different RNA contexts and folds autonomously, that is, in a context-independent manner. In this study, we combined bioinformatics analysis with explicit-solvent molecular dynamics (MD) simulations to better understand the relation between the RNA sequence and the evolutionary patterns of the SR motif. A SHAPE probing experiment was also performed to confirm the fidelity of the MD simulations. We identified 57 instances of the SR motif in a nonredundant subset of the RNA X-ray structure database and analyzed their base pairing, …

Probing Vibrationally Mediated Ultrafast Excited-State Reaction Dynamics With Multireference (Caspt2) Trajectories, Patrick Z. El-Khoury, Saju Joseph, Igor Schapiro, Samer Gozem, Massimo Olivucci, Alexander N. Tarnovsky

Chemistry Faculty Publications

Excited-state trajectories computed at the complete active space second-order perturbation theory (CASPT2) reveal how vibrational excitation controls the molecular approach to the intersection space that drives the photodissociation of a prototypical halogenated methyl radical, namely CF2I. Translating the Franck-Condon structure along the ground-state CASPT2 vibrational modes in this system followed by propagating the displaced structures in the first excited doublet state simulates specific vibrational excitations and vibrationally mediated dynamics, respectively. Three distinct situations are encountered: the trajectories (i) converge to an energetically flat segment of the intersection space, (ii) locate a segment of the intersection space, and (iii) access a …

Patent Invalidity Versus Noninfringement, Roger Ford

Articles

No abstract provided.

The Columbia River Treaty's Canadian Entitlement: The Role Of Liberalized And Integrated North American Electricity Markets In A New Calculation, Kevin Kirkpatrick

Washington Journal of Environmental Law & Policy

The Columbia River Treaty between the United States and Canada may be terminated unilaterally by either nation beginning next year; this has brough attention within the Pacific Northwest and beyond to the 1964 agreement on river flows. Much of the discussion about updating the accord highlights important goals such as bettering the protection of fish and increasing public participation in ecosystem governance, but often neglects analysis of how electricity markets have changed over the past fifty years. This Comment, through an examination of key developments in utilities law and application of economic theory, attempts to parse principles that may prove …

Correlation Properties Of Collective Motion In Bacterial Suspensions, Shawn D. Ryan, Andrey Sokolov, Leonid Berlyand, Igor S. Aranson

Mathematics and Statistics Faculty Publications

The study of collective motion in bacterial suspensions has been of significant recent interest. To better understand the non-trivial spatio-temporal correlations emerging in the course of collective swimming in suspensions of motile bacteria, a simple model is employed: a bacterium is represented as a force dipole with size, through the use of a short-range repelling potential, and shape. The model emphasizes two fundamental mechanisms: dipolar hydrodynamic interactions and short-range bacterial collisions. Using direct particle simulations validated by a dedicated experiment, we show that changing the swimming speed or concentration alters the time scale of sustained collective motion, consistent with experiment. …

Broad Iron Lines In Neutrons Stars: Dynamical Broadening Or Wind Scattering?, E. M. Cackett, Jon M. Miller

Physics and Astronomy Faculty Research Publications

Broad iron emission lines are observed in many accreting systems from black holes in active galactic nuclei and X-ray binaries to neutron star low-mass X-ray binaries. The origin of the line broadening is often interpreted as due to dynamical broadening and relativistic effects. However, alternative interpretations have been proposed, included broadening due to Compton scattering in a wind or accretion disk atmosphere. Here we explore the observational signatures expected from broadening in a wind, in particular that the iron line width should increase with an increase in the column density of the absorber (due to an increase in the number …

Calculating Time Lags From Unevenly Sampled Light Curves, A. Zoghbi, C. Reynolds, E. M. Cackett

Physics and Astronomy Faculty Research Publications

Timing techniques are powerful tools to study dynamical astrophysical phenomena. In the X-ray band, they offer the potential of probing accretion physics down to the event horizon. Recent work has used frequency- and energy-dependent time lags as tools for studying relativistic reverberation around the black holes in several Seyfert galaxies. This was achieved due to the evenly sampled light curves obtained using XMM-Newton. Continuously sampled data are, however, not always available and standard Fourier techniques are not applicable. Here, building on the work of Miller et al., we discuss and use a maximum likelihood method to obtain frequency-dependent lags that …

Caratterizzazione Dell’Ambiente Marino Dei Campi Flegrei. Risultati Preliminari Della Campagna Oceanografica Ricamar 2013, M. Grassi, C. Carmisciano, L. Cocchi, L. Dialti, M. Filippone, Matteo Guideri, Roberta Ivaldi, Giuseppe Masetti, F. Muccini, M. Pratellesi, E. Ricci, Paolo Stefanelli

Center for Coastal and Ocean Mapping

The caldera of the Phlegraean Fields (also known as Campi Flegrei) is one of the most dangerous and populated volcanic area in the world, covering an area that comprises the western part of Naples and the Gulf of Pozzuoli. The main peculiarity of current volcanic activity is the gradual and periodic lift (positive or negative) of part of the Earth's surface (bradyseism) combined, only during the positive phase, with a strong sismicity and surficial hydrotermal activity. Deformative models, calibrated using land-based measurements, highlighted the Gulf of Pozzuoli as the area with the largest deformation. Although the network of monitoring sensors …

Alb Evaluation For Noaa Charting Requirements, Gretchen Imahori, Shachak Pe'eri, Christopher E. Parrish

Center for Coastal and Ocean Mapping

The National Oceanic and Atmospheric Administration (NOAA) acquires hydrographic data around the coasts of the US and its territories using in-house surveys and contracting resources. Hydrographic data are primarily collected using sonar systems, while a small percent is acquired via Airborne Lidar Bathymetry (ALB) for nearshore areas. NOAA has an ongoing requirement, as per the Coast and Geodetic Survey Act of 1947, to survey nearshore areas as part of its coastal mapping activities, including updating nautical charts, creating hydrodynamic models and supporting coastal planning and habitat mapping. NOAA has initiated a project to investigate the potential use of ALB data …

Bridgewater Review, Vol. 32, No. 2, November 2013

Bridgewater Review

No abstract provided.

A Case Study: Achievement Studies Of Persistent, Transitional, And Transient Populations Within The Blitz Program Model At A Large Midwestern Elementary School, Jackie D. Ramey

Dissertations

The United States’ Public Education system shared concerns regarding declining achievement results across the nation. Numerous research studies suggested significant correlations to various variables, such as, SES (Socio-Economic Status), LEP (Limited English Proficiency), IEP (Individualized Educational Programs), ethnicity, and student mobility. The literature suggested these areas of concern need continued research to address specific issues, such as, how to close the educational gaps between students in these categories and students without these characteristics. The Primary Investigator completed a case study to assist decision makers with transient students at a Midwest near-urban elementary school by specifically focusing on fifth grade students …

Perceptions Of Educational Leaders Of Incentive Pay Programs, Kena Lashel Worley

Dissertations

In this study, the perceptions of educational leaders of incentive pay programs, including Missouri’s Career Ladder Program were examined. A mixed-methods design provided a process by which student achievement, professional development, and the retention of high quality and effective teachers were viewed through the lens of Marzano’s (2003) Teacher Level Factors that influence student achievement. The population for the study consisted of educational leaders and educators in Missouri. The sample group was comprised of four public school superintendents, four professional development chairs, four leaders in professional education organizations, four Missouri public school board presidents, and approximately 83 Missouri public school …

Geosciences Newsletter - 2013, Department Of Geosciences

Geological and Environmental Sciences News

Vol. 6, no. 1

• Dear Friends and Alumni
• Michigan Geological Survey
• WMU Geosciences Advisory Council
• Recent Alumni Spotlights
• WMU Geology Club
• Other News
• In Remembrance
• Hydrogeology Field Camp 2013
• Meet Our Graduate Students
• News from MGRRE
• CoreKids our K-12 Outreach Program
• Geosciences Publications 2012-13
• Flashback
• 2013 GSA North Central Section Annual Meeting
• 2013 Geosciences Distinguished Alumni Award Recipient
• Gifts to Geosciences

Microrna-142 Reduces Monoamine Oxidase A Expression And Activity In Neuronal Cells By Downregulating Sirt1, Amrita Datta Chaudhuri, Sowmya V. Yelamanchili, Howard S. Fox

Journal Articles: Pharmacology & Experimental Neuroscience

Aberrant expression of microRNAs (miRs) has been implicated in the pathogenesis of several neurodegenerative disorders. In HIV-associated neurocognitive disorders (HAND), miR-142 was found to be upregulated in neurons and myeloid cells in the brain. We investigated the downstream effects of chronic miR-142 upregulation in neuronal cells by comparing gene expression in stable clones of the human neuroblastoma cell line BE(2)M17 expressing miR-142 to controls. Microarray analysis revealed that miR-142 expression led to a reduction in monoamine oxidase (MAO) A mRNA, which was validated by qRT-PCR. In addition to the mRNA, the MAOA protein level and enzyme activity were also reduced. …

Cloud Computing Dhe Teknologjia E Gjelbër, Yll Konjufca

Theses and Dissertations

No abstract provided.

Analiza Forenzike E Regjistrit Të Windows-It, Avdush Jashari

Theses and Dissertations

Kjo temë do të prezantoj data bazën e Windows Regjistrit dhe do të shpjegojë se sa është e rëndësishme në ekzaminimet forenzike kjo data bazë për ekzaminuesit e fushës së forenzikës digjitale. Në esencë tema do të diskutoj disa lloje të ndryshme të gjurmëve të regjistrit dhe do të hulumtojmë se çfarë informacione të rëndësishme mund të marrim duke bërë një ekzaminim forenzik.

Gjithashtu do të diskutohet edhe për shumë çelësa të regjistrit (Registry KEY) të cilët janë shumë të domosdoshëm në një ekzaminim. Forenzika Kompjuterike (Forenzika Digjitale) është aplikimi i teknikave të hetimit dhe analizimit për të mbledhur dhe …

Përmbledhje E Teknologjive Për Mbrojtjen E Privatësisë Online, Driton Tahiri

Theses and Dissertations

Me zhvillimin e hovshëm teknologjik, gjithnjë e më shumë është shtuar përdorimi i shërbimeve të ndryshme online. Me këtë, edhe shpërndarja e të dhënave personale të shfrytëzuesve tek ofrues të ndryshëm të shërbimeve ka bërë që shfrytëzuesit të humbin gjithnjë e me shume kontrollin ndaj të dhënave të tyre personale, shpesh edhe pa dituri të mjaftueshme. Në këtë mënyrë, privatësia e shfrytëzuesve është vënë në rrezik gjithnjë e më të madh.

Për këtë arsye, në këtë punim të bachelor, kam vendosur që të sjell një përmbledhje të teknologjive që kanë për synim vënien e të dhënave personale në kontroll të …

Implementimi I Gps Sistemit Në Pajisje Mobile, Emin Hyseni

Theses and Dissertations

Në dekadën e fundit popullariteti i përdorimit të GPS në pajisjet mobile është në rritjen eksponenciale të numrit të përdoruesve anë e banë botës. Ky numër kaq i madh i pajisjeve mobile e bën më të përdoshëm GPS në të gjitha sferat e jetes. E tëra kjo është si pasojë e zhvillimit të madh të teknologjis së telefonave mobil. Java si gjuhë e lartë programuese mundëson lidhshmërinë në mes të pajisjeve haduerike(hardware) të telefonave të mençur me aplikacionet e sistemit operativ. Java është gjuha e vetme e që është shkruar sistemi operativ ANDROID. Njëhiherit edhe aplikacionet e tjera duhet të …

Siguria E Aplikacioneve, Fatjon Shala

Theses and Dissertations

Me lindjen e internetit dhe rritja gjithnjë më e madhe e kompleksitetit të softverit dhe sistemeve, nevoja për aplikacjone të sigurta është bërë urgjente. Megjithate organizatat përballen me sfida të ndryshme për ti mbajtur programet e tyre të sigurta edhe pse kërcenimet evoluojn kohë pas kohë. Pra interneti ofron mundësi të shumta për një sulmues (haker) për tu lidhur me aplikacjon e për ta shkelur sigurin e ti. Pavarsisht nga shqetësimi në rritje rreth kërkesave për aplikacjone të sigurta me personele të përfshir si zhvillues, administrator planifikues të projekteve etj. megjithate e kanë të vështir të gjejn mënyra për të …

Rrjetet Sociale Si Mundësi Për Të Bërë Marketing, Valon Rexhepi

Theses and Dissertations

Në vitin 2003, dy rrjete sociale u lansuan që më vonë do ta ndryshonin përgjithmonë mënyrën që ne komunikojm me njëri tjetrin: Facebook dhe MySpace. Në atë kohë askush nuk do të mund ta imagjinonte sa sa produktive dhe influencuese do të bëheshin këto rrjete sociale.

Megjithatë, gjatë dy viteve në vazhdim dy shërbime tjera do të lansoheshin që do ta zgjeronin edhe më shumë arritjen dhe rëndësin e rrjeteve sociale: Youtube (2005) dhe Twitter (2006). Me këto dy zbulime të reja, përdouresit tani më do të mund të kalonin në një fazë tjetër, e cila e kalon komunikimim me …

A Comparison Of The Academic Achievement And Perceptions Of Leadership Skills And Citizenship Traits Of Jrotc, Student Athletes, And Other Students In An Urban High School Setting, Carmen Williams-Bonds

Dissertations

The purpose of this study was to compare three groups: JROTC students, student athletes, and other students, to determine if there were differences in academic achievement. Gaining an understanding of the necessary skills required to become academically successful and make healthy life choices, could provide educators working within an urban environment insight for student success. The study was conducted within a Midwest urban high school in which, 98.5% of the students were African American. Student performance data in the areas of reading and math for the past three years had been trending downward and caused the high school to be …