cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ageing of a granular pile induced by thermal cycling
Creators: name: Divoux, Thibaut
name: Vassilief, Ion
name: Gayvallet, Hervé
name: Géminard, Jean-Christophe
Publisher: name: arXiv
Year: 2009
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Here we show that variations of temperature, even of a few degrees in amplitude, induce the ageing of a granular pile. In particular, we report measurements of physical properties of a granular heap submitted to thermal cycles. Namely, we focus on the evolution of the thermal linear-expansion coefficient and of the thermal conductivity of the pile with the number of cycles. The present contribution nicely supplements a recent article we published elsewhere [Phys. Rev. Lett. \textbf{101}, 148303 (2008)] and introduces a different and promising method to impose temperature cycles to a granular pile.
description: 4 pages, 5 figures, Proceeding of the Powders and Grains conference 2009, Golden (Colorado)
GRASP: Municipal Budget AI Chatbots for Enhancing Civic Engagement
Creators: name: Xu, Jerry
name: Wang, Justin
name: Leung, Joley
name: Gu, Jasmine
Publisher: name: arXiv
Year: 2025
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: There are a growing number of AI applications, but none tailored specifically to help residents answer their questions about municipal budget, a topic most are interested in but few have a solid comprehension of. In this research paper, we propose GRASP, a custom AI chatbot framework which stands for Generation with Retrieval and Action System for Prompts. GRASP provides more truthful and grounded responses to user budget queries than traditional information retrieval systems like general Large Language Models (LLMs) or web searches. These improvements come from the novel combination of a Retrieval-Augmented Generation (RAG) framework ("Generation with Retrieval") and an agentic workflow ("Action System"), as well as prompt engineering techniques, the incorporation of municipal budget domain knowledge, and collaboration with local town officials to ensure response truthfulness. During testing, we found that our GRASP chatbot provided precise and accurate responses for local municipal budget queries 78% of the time, while GPT-4o and Gemini were only accurate 60% and 35% of the time, respectively. GRASP chatbots greatly reduce the time and effort needed for the general public to get an intuitive and correct understanding of their town's budget, thus fostering greater communal discourse, improving government transparency, and allowing citizens to make more informed decisions.
Mean transit time on Aquilion ONE and its utilization in patients undergoing acute stroke intervention
Creators: name: Zeenat Qureshi Stroke Institutes
Publisher: name: Zenodo
Year: 2023

description: Background—Neuroimaging techniques have been beneficial in identifying patients with salvageable penumbra. We sought to validate the mean transit time (MTT) map on computed tomography perfusion (CTP) imaging utilizing an Aquilion ONE computed tomography (CT) scanner running a singular value decomposition plus algorithm in patients with acute large vessel ischemic stroke who underwent endovascular therapy. Methods—We conducted a retrospective analysis of consecutive patients presenting to the emergency room who met the following criteria: 1) had a large vessel acute ischemic stroke; 2) had a high-quality whole-brain CTP; 3) treated with endovascular therapy; and 4) received a follow-up MRI with diffusionweighted imaging (DWI) within 48 h. A blinded neurologist, neuroradiologist, and neurosurgeon utilized the Vitrea software to process the images independently using an infarct perimeter method. Results—Twelve patients met the inclusion criteria. A comparison was made between the volumes of infarct core (IC) utilizing MTT and DWI after accounting for other co-founding factors (i.e., recanalization rate, time between CT and MRI, time to achieve recanalization, and IV t-PA administration). MTT was redefined as capillary MTT (cMTT) which represented evolving capillary flow influenced by hypoxia induced vasodilation/vasoconstriction. We divided the patients into two groups based on the degree of reperfusion: A) patients with a TICI score of IIb or III and B) patients with a TICI score of I or IIa. We compared the two groups and found that the rate of reperfusion significantly affected the volume of the infarct on MTT when compared with a follow-up MRI (p value < 0.04). Furthermore, we found a strong positive correlation R 2 = 0.6 between the average MTT infarct volume and the final DWI MR volumes. In addition, the averaged MTT IC volumes were 84% of the final averaged DWI IC volumes. Conclusion—Although further studies are required to validate this retrospective study, preliminary data suggest that cMTT maps can be a valuable and accurate tool in the assessment of patients with acute stroke who may benefit from aggressive endovascular therapy
Imaging and manipulating the invariant molecular ultracold plasma state of nitric oxide
Creators: name: Marroquín Madera, Kevin Leonardo
Publisher: name: University of British Columbia
Year: 2023

description: The core of an ellipsoidal Rydberg gas of nitric oxide undergoes spontaneous avalanche, leading to the formation of plasma. Ambipolar expansion quenches electron temperature as it radially accelerate NO⁺ ions in the core. Ballistic ions enter the wings of the ellipsoid where they engage in long-range, resonant charge transfer with frozen Rydberg molecules, equalizing the ion-Rydberg molecule relative velocity. This sequence of process gives rise to a remarkable process of self assembly, where the kinetic energy of the initially generated hot electrons and ions drives the separation of plasma volumes. These dynamics effectively store energy in a reservoir of mass transport, initiating a process that facilitates the annealing of the separating volumes into a seemingly glass like state consisting of strongly coupled ions and electrons. Experimental evidence for complete ionization is provided through short-time electron spectroscopy. Notably, the long lifetime and stability of this system, with respect to recombination and neutral dissociation, suggest that this transformation yields a resilient state of arrested relaxation, significantly deviating from thermal equilibrium. This thesis, provided direct evidence for these processes observed in the absorption spectrum of transitions to states within the selected Rydberg series, which persist as a long-lived signal even after travelling for 400 μs to reach an imaging detector. Plasma images elucidate kinetic processes that occur within the Rydberg volume, leading to the formation of a long-lived plasma that undergoes an initial density dependent bifurcation. Spectroscopic results shed light on how the initial electron density, resulting from prompt Penning ionization and varying with the chosen initial principal quantum number and Rydberg gas density, play a crucial role in determining plasma stability. This Penning-regulated ion-Rydberg equilibrium appears to be play an essential role in extending plasma lifetime, thereby enabling the detection of spectral features after significant time delays. Studies of bifurcation velocity as a function of initial Rydberg gas principal quantum number and density map patterns in plasma energy disposal and long term stability notably show that, irrespective of the initial conditions, this final bifurcated state exhibits a constant density.
Propagation of small fluctuations in electromagnetically induced transparency. Influence of Doppler width
Creators: name: Barberis-Blostein, Pablo
name: Bienert, Marc
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The propagation of a pair of quantized fields inside a medium of three-level atoms in $Λ$ configuration is analyzed. We calculate the stationary quadrature noise spectrum of the field after propagating through the medium in the case where the field has a general (but small) noise spectrum and the atoms are in a coherent population trapping state and show electromagnetically induced transparency (EIT). Although the mean values of the field remain unaltered as the field propagates, there is an oscillatory interchange of noise properties between the probe and pump fields. Also, as the field propagates, there is an oscillatory creation and annihilation of correlations between the probe and pump quadratures. We further study the field propagation of squeezed states when there is two-photon resonance, but the field has a detuning $δ$ from atomic resonance. We show that the field propagation is very sensitive to $δ$. The propagation in this case can be explained as a combination of a frequency dependent rotation of maximum squeezed quadrature with an interchange of noise properties between pump and probe fields. It is also shown that the effect of the Doppler width in a squeezed state propagation is considerable.
Formulaic Language: Pushing the Boundaries
Creators: name: Hall, Timothy
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: As the construct of formulaic language gains sway in language acquisition theory and pedagogy, the number of publications on corresponding theoretical treatises and empirical research has also been on the grow. Formulaic Language: Pushing the Boundaries is the most recent monograph of one of the field’s authoritative figures, Alison Wray. Formulaic expressions or sequences, in simple terms, are linguistic units composed of multiple words. According to Sinclair (1991), they are subsumed under a model of language processing called the Idiom Principle, which postulates that “a language user has available to him or her a large number of semi-preconstructed phrases that constitute single choices” (p. 110). These single, multi-word choices in effect are mediators for human language competence and idiomatic language use.
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
Case Study Research in Applied Linguistics
Creators: name: Box, Catherine
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: Case Study Research in Applied Linguistics offers a detailed foray into all aspects of the role of the case study: the text defines terms related to this type of research, provides historical background on the method, and explains the process of performing and reporting case studies. Such a comprehensive introduction addresses a gap in the literature. Many research methods texts provide overviews of different kinds of quantitative and qualitative research often utilized in the field of applied linguistics, including correlational research, introspective research, and in-class observations (e.g., Brown & Rogers, 2002; Dörnyei, 2007). Few, however, focus exclusively on case study research, lacking examination of the often painstaking process case studies entail. While the book’s scope is broad, Duff’s purposes are clear and concise from the outset: 1) to delineate the methodological foundations of case study research, 2) to present and examine seminal case studies in the area of second language (L2) development and teaching, and 3) to demystify the process of case study research from conception to publication. As these goals suggest, the book intends to offer the necessary information and sound advice to budding researchers in applied linguistics on both the graduate and undergraduate level.
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
Atomic-scale patterning of hydrogen terminated Ge(001) by scanning tunneling microscopy
Creators: name: Scappucci, G.
name: Capellini, G.
name: Lee, W. C. T.
name: Simmons, M. Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper we demonstrate atomic-scale lithography on hydrogen terminated Ge(001. The lithographic patterns were obtained by selectively desorbing hydrogen atoms from a H resist layer adsorbed on a clean, atomically flat Ge(001) surface with a scanning tunneling microscope tip operating in ultra-high vacuum. The influence of the tip-to-sample bias on the lithographic process have been investigated. Lithographic patterns with feature-sizes from 200 nm to 1.8 nm have been achieved by varying the tip-to-sample bias. These results open up the possibility of a scanning-probe lithography approach to the fabrication of future atomic-scale devices in germanium.
“I Don’t Know What My Mummy Does”
Creators: name: Wagner, Santoi
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: Explaining to non-academics what being a doctoral student entails can be difficult. What is it that we do all day? What is “research” anyway? And, why does it take such a long time? Explaining this to one’s children is undoubtedly an even more difficult task. So, my approach was to ignore going over the details and simply gloss my disappearing upstairs and sitting at the computer as “Mummy doing some work.” Of course, such a lack of explanation has to be dealt with eventually.
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
Low-frequency study of two giant radio galaxies: 3C35 and 3C223
Creators: name: Orrù, E.
name: Murgia, M.
name: Feretti, L.
name: Govoni, F.
name: Giovannini, G.
name: Lane, W.
name: Kassim, N.
name: Paladino, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Radio galaxies with a projected linear size > 1 Mpc are classified as giant radio sources. According to the current interpretation these are old sources which have evolved in a low-density ambient medium. Since radiative losses are negligible at low frequency, extending spectral ageing studies in this frequency range will allow to determine the zero-age electron spectrum injected and then to improve the estimate of the synchrotron age of the source. We present Very Large Array images at 74 MHz and 327 MHz of two giant radio sources: 3C35 and 3C223. We performed a spectral study using 74, 327, 608 and 1400 GHz images. The spectral shape is estimated in different positions along the source. The radio spectrum follows a power-law in the hot-spots, while in the inner region of the lobe the shape of the spectrum shows a curvature at high frequencies. This steepening is in agreement with synchrotron aging of the emitting relativistic electrons. In order to estimate the synchrotron age of the sources, the spectra have been fitted with a synchrotron model of emission. Using the models, we find that 3C35 is an old source of about 143 Myr, while 3C223 is a younger source of 72 Myr.
description: 14 pages, 11 figures, accepted for publication on A&A
Classical Mobius-Ring Resonators Exhibit Fermion-Boson Rotational Symmetry
Creators: name: Ballon, Douglas J.
name: Voss, Henning U.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The behavior of coupled harmonic oscillators in systems with specified boundary conditions is typically characterized by resonances whose frequency spectra represent harmonics according to properties of the individual oscillators, the interactions between them, and the overall symmetry of the system. Here it is demonstrated that classical one- and two-dimensional radiofrequency resonators constrained to a Mobius topology are the formal partners of cylindrical ring resonators, and specifically give rise to half-integral harmonic excitations that are orthogonal to the integral excitations of a ring. In particular, the half-integral harmonics are formally invariant under rotations at a minimum of 4pi rather than 2pi radians, in analogy to the rotational symmetry of fermions in quantum mechanics. The results offer a pathway for discovery in other physical systems as well as the design of novel materials and electronic instrumentation.
description: Typographic error in Eq. (7) corrected
DEP Bulletin: Volume 41 Issue 22
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2017

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.
How Motherhood Might Be Like a Volcano
Creators: name: Tatton-Harris, Heather
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: Life before baby. I remember what that was like: leaving the house at will; running errands whenever the timing seemed right; taking long showers; casually perusing the internet and answering emails; making dinner and having the time to eat with my husband while we discussed the day’s events; reading an entire journal article while taking notes and having time for contemplation; going to work and whimsically deciding to stop for a shopping trip on the way home. Ah the freedom!
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
Perturbative quantum analysis and classical limit of the electron scattering by a solenoidal magnetic field
Creators: name: Murguia, Gabriela
name: Moreno, Matias
name: Torres, Manuel
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: A well known example in quantum electrodynamics (QED) shows that Coulomb scattering of unpolarized electrons, calculated to lowest order in perturbation theory, yields a results that exactly coincides (in the non-relativistic limit) with the Rutherford formula. We examine an analogous example, the classical and perturbative quantum scattering of an electron by a magnetic field confined in an infinite solenoid of finite radius. The results obtained for the classical and the quantum differential cross sections display marked differences. While this may not be a complete surprise, one should expect to recover the classical expression by applying the classical limit to the quantum result. This turn not to be the case. Surprisingly enough, it is shown that the classical result can not be recuperated even if higher order corrections are included. To recover the classic correspondence of the quantum scattering problem a suitable non-perturbative methodology should be applied.
description: To appear in the proceedings of 13th Mexican School of Particles and Fields (MSPF 2008), San Carlos, Sonora, Mexico, 2-11 Oct 2008. 6 pages, 2 Postscript figures
Characteristics and phylogenetic analysis of the complete chloroplast genome of Primulina hedyotidea
Creators: name: Wen, Haicheng
name: Su, Yongjing
name: Xie, Ao
name: Lin, Chen
name: Wei, Wei
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Primulina hedyotidea (Woon Young Chun) Yin Zheng Wang 2011 is an important medicinal plant that has a long history of medicinal use in China. In this experiment, the whole chloroplast genome of P. hedyotidea was determined by next-generation sequencing technology. The total base length of P. hedyotidea was 153,297 bp, the GC content was 37.62%, the inverted repeat (IR) region length was 25,494 bp, the large single copy (LSC) region was 84,158 bp and the small single copy (SSC) region was 18,151 bp. In addition, the genome consisted of 80 protein-coding genes, 4 rRNA genes, and 28 tRNA genes, for a total of 112 genes. A phylogenetic tree was constructed to explore the evolutionary relationship between P. hedyotidea and other species. The findings of phylogenetic tree analysis show that Primulina huaijiensis and P. hedyotidea have a close relationship, and this study can help with species identification and phylogenetic analysis within Primulina and Gesneriaceae species.
“A New Language Tester is Born”
Creators: name: Di Gennaro, Kristen
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: This was the subject heading in the e-mail my advisor, Jim Purpura, sent out to the doctoral seminar group after I announced the arrival of my baby girl. While I clearly shared others’ enthusiasm in my happy news, I was also more than a little apprehensive about how a baby was going to affect my lifestyle and career goals. Panic quickly set in as many questions raced through my mind: How was I going to continue working full time? When would I be able to finish my doctorate? When will I find time to continue my research in writing assessment? What will happen to the person(s) I used to be?
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
Computational study of boron nitride nanotube synthesis: how catalyst morphology stabilizes the boron nitride bond
Creators: name: Riikonen, S.
name: Foster, A. S.
name: Krasheninnikov, A. V.
name: Nieminen, R. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In an attempt to understand why catalytic methods for the growth of boron nitride nanotubes work much worse than for their carbon counterparts, we use first-principles calculations to study the energetics of elemental reactions forming N2, B2 and BN molecules on an iron catalyst. We observe that in the case of these small molecules, the catalytic activity is hindered by the formation of B2 on the iron surface. We also observe that the local morphology of a step edge present in our nanoparticle model stabilizes the boron nitride molecule with respect to B2 due to the ability of the step edge to offer sites with different coordination simultaneously for nitrogen and boron. Our results emphasize the importance of atomic steps for a high yield chemical vapor deposition growth of BN nanotubes and may outline new directions for improving the efficiency of the method.
description: submitted to physical review B
Academic Life and Motherhood: A Skillful Balancing Act
Creators: name: DelPrete, Donna
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: When I began my doctoral studies in the fall of 2002, I found myself engaged in a difficult balancing act. If two children under the age of six, a husband, a part-time job, and aging parents were not enough to manage, adding serious graduate work to this already heavy load seemed impossible to handle. Initially, I was unsteady – losing my footing and balance on the thin beam upon which I walked each day. Around the same time, I also came across an aphorism that encouraged slow but steady work towards the realization of a goal. It read something like this: Plant one flower a year and in ten years you shall have a beautiful garden. I decided to make this one of my mantras. And so, I began to work slowly but consistently towards my doctorate, taking two or three courses per academic year (or planting a couple of flowers at a time).
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
AKMEOLOGIK ART-TERAPIYA: 5-SINF TEXNOLOGIYA FANIDA O'QUVCHILARNING INTELLEKTUAL VA KREATIV QOBILIYATINI TAKOMILLASHTIRISH
Creators: name: G'ulomova, Muxarram
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada bugungi kunda dolzarb mavzu bo'lgan, 5-sinf texnologiya fanida akmeologik art-terapiya asosida o'quvchilarning intellektual va kreativ qobiliyatini takomillashtirish jarayonini tahlil qilingan. Maqola, turli ilmiy adabiyotlardan olingan tahlillar va tadqiqotlar asosida o'quvchilarning kreativ va intellektual rivojlanishini oshirishning ahamiyatini ko'rsatadi. Maqolaning boshlanishi, akmeologik art-terapiyaning o'quvchilarning intellektual va kreativ rivojlanishiga qanday ta'sir qilishi mumkinligi haqida og'zaki sabablar bilan amalga oshirilgan. Texnologiya fanining o'zining maxsus xususiyatlarini ko'rib chiqilishi va akmeologik art-terapiyaning 5-sinf texnologiya fanida qanday samarali bo'lishi haqida tafsilotlar taqdim etilgan.
East Is West
Creators: name: Dakin, Jee Wha
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: It’s pretty amazing, when you become a mom. You automatically become connected to other women who are moms, and you become more deeply connected to your own. It’s like a huge global club of members who are experiencing their kids’ (and their own) milestones, regardless of their time zone, culture, or language. Some ultimately graduate to become part of the grandmother club, and even fewer are lucky enough to become part of the great-grandmother club. When you are a mom and a doctoral student, to boot, you become part of a coterie of women who never surrender learning and growing. Balancing a personal life, making an adequate income, and maintaining a focus on studies has been a great challenge for me.
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
Influence of encapsulation temperature on Ge:P delta-doped layers
Creators: name: Scappucci, G.
name: Capellini, G.
name: Simmons, M. Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a systematic study of the influence of the encapsulation temperature on dopant confinement and electrical properties of Ge:P delta-doped layers. For increasing growth temperature we observe an enhancement of the electrical properties accompanied by an increased segregation of the phosphorous donors, resulting in a slight broadening of the delta-layer. We demonstrate that a step-flow growth achieved at 530 C provides the best compromise between high crystal quality and minimal dopant redistribution, with an electron mobility ~ 128 cm^2/Vs at a carrier density 1.3x10^14 cm-2, and a 4.2 K phase coherence length of ~ 180 nm.
description: Phys. Rev. B, in press (2009)
Theirs, Mine, and Ours: On Being a Doctoral Student and a Mother
Creators: name: Box, Catherine
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: This is a perfect moment to reflect on my life as a doctoral student and a mother, for never have these two roles dominated the many others I assume as they do now. In the two weeks since I was approached about writing on my experience as a parent and student, I have accomplished many tasks, for lack of a better term: laid out my plan for future doctoral classes and research, finished a book review, began the daunting search for kindergarten programs for my 4-year-old daughter, Océane, and gave birth to my second child, Samuel. At first glance, it seems that one could demarcate my professional work from my personal life— doctoral coursework, professors, research papers, and exams on one side, husband, children and preschool conferences on the other. If that were true, it would have been impossible for me to have survived the past two weeks. Instead, my doctoral work and my personal life intertwine so closely that one informs the other; indeed, one inspires the other. Balancing the two roles, in fact, makes me a better student and mother.
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
Quantization of the Hall conductance and delocalization in ergodic Landau Hamiltonians
Creators: name: Germinet, François
name: Klein, Abel
name: Schenker, Jeffrey H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82B44 (Primary); 47B80, 60H25 (Secondary)

description: We prove quantization of the Hall conductance for continuous ergodic Landau Hamiltonians under a condition on the decay of the Fermi projections. This condition and continuity of the integrated density of states are shown to imply continuity of the Hall conductance. In addition, we prove the existence of delocalization near each Landau level for these two-dimensional Hamiltonians. More precisely, we prove that for some ergodic Landau Hamiltonians there exists an energy $E$ near each Landau level where a ``localization length'' diverges. For the Anderson-Landau Hamiltonian we also obtain a transition between dynamical localization and dynamical delocalization in the Landau bands, with a minimal rate of transport, even in cases when the spectral gaps are closed.
description: Misprints, updated references
Genuine four-partite Bell nonlocality in the curved spacetime
Creators: name: Mi, Guang-Wei
name: Huang, Xiaofen
name: Fei, Shao-Ming
name: Zhang, Tinggui
Publisher: name: arXiv
Year: 2025
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The quantum Bell nonlocality plays a crucial role in quantum information processing. In this paper, we first obtain the quantitative analytical expression of the genuine four-partite Bell nonlocality of any 4-qubit quantum state. Then, we investigate and derive the genuine four-partite nonlocalities in the background of the Schwarzschild black hole and the Schwarzschild-de Sitter spacetime. In the Schwarzschild black hole, it is shown that the Hawking effect destroys the accessible genuine four-partite nonlocality while simultaneously having both detrimental and beneficial impacts on the inaccessible genuine four-partite nonlocality. Besides, we observe that the Hawking effect can generate the physically inaccessible genuine four-partite nonlocality for fermion fields in Schwarzschild black hole. This result shows that the genuine four-partite nonlocality can pass through the event horizon of black hole. Moreover, we also investigate the influence of the Hawking effect of the Schwarzschild-de Sitter spacetime on the genuine four-partite nonlocality of massless Dirac fields.
description: 13 pages, 6 figures
Elemental Abundances in the X-Ray Gas of Early-Type Galaxies with XMM and Chandra Observations
Creators: name: Ji, Jun
name: Irwin, Jimmy A.
name: Athey, Alex
name: Bregman, Joel N.
name: Lloyd-Davies, Edward J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The source of hot gas in elliptical galaxies is thought to be due to stellar mass loss, with contributions from supernova events and possibly from infall from a surrounding environment. This picture predicts supersolar values for the metallicity of the gas toward the inner part of the galaxy, which can be tested by measuring the gas phase abundances. We use high-quality data for 10 nearby early-type galaxy from XMM-Newton, featuring both the EPIC and the Reflection Grating Spectrometer, where the strongest emission lines are detected with little blending; some Chandra data are also used. We find excellent consistency in the elemental abundances between the different XMM instruments and good consistency with Chandra. Differences in abundances with aperture size and model complexity are examined, but large differences rarely occur. For a two-temperature thermal model plus a point source contribution, the median Fe and O abundances are 0.86 and 0.44 of the Solar value, while Si and Mg abundances are similar to that for Fe. This is similar to stellar abundances for these galaxies but supernovae were expected to enhance the gas phase abundances considerably, which is not observed.
description: 35 pages, 10 figures, accepted for publication in Astrophysical Journal
Vertex-and-edge ordering for faster parallel graph processing
Creators: name: Trostanovsky, Alex
Publisher: name: University of British Columbia
Year: 2023

description: Graph structured data, which models complex relationships, describes data in myriad domains, such as social network analysis, protein structure analysis, and supply chain management. As the size of graph data grows, researchers develop modern systems to handle massive datasets with trillions of entries. To accelerate processing, systems optimize the data layout of vertices and edges in memory or on disk, but, to date, researchers have treated the performance improvements due to vertex and edge orderings separately. This work investigates the interaction between vertex and edge orderings. We explore whether combining these orderings improves performance. An extensive performance study of different orderings finds that a specific combination, the SlashBurn vertex order and the Hilbert edge order, consistently provides the fastest runtimes for scale-free graphs. These results motivate our development of a parallelized SlashBurn and the Rhubarb edge ordering and blocking technique. Using 14 cores, Parallel SlashBurn is up to 11.96× faster than the sequential implementation. Rhubarb enables the scalable implementation of parallel edge-centric algorithms using the Hilbert curve and offers end-to-end performance speedup for the Collaborative Filtering application of up to more than 2.5× over modern parallel Graph Processing Systems.
Robust Speed Control of a Multi-Mass System: AnalyticalTuning and Sensitivity Analysis
Creators: name: Alhanouti, Muhammed
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 400705
subject: Control engineering
classificationCode: 400711
subject: Simulation, modelling, and programming of mechatronics systems

description: The regeneration of highly dynamic driving maneuvers on vehicle test benches is challenging due to several influences, such as power losses, vibrations in the overall system that involves the vehicle with the test bench, uncertainties in the model parameterization, and time delays from both the test bench and the measurement systems. In order to improve the dynamic response of the vehicle test bench and to overcome system disturbances, we employed different types of control algorithms for a mechanical multi-mass model. First, those controllers are extensively investigated in the frequency domain to analyze their stability and evaluate the noise rejection quality. Then, the expectations from the frequency analysis are confirmed in a time-domain simulation. Furthermore, sensitivity analysis tests were conducted to evaluate each controller’s robustness against the modeling parameters’ uncertainty. The linear quadratic controller with integral action demonstrated the best compromise between performance and robustness.
Determining all gas properties in galaxy clusters from the dark matter distribution alone
Creators: name: Frederiksen, Teddy F.
name: Hansen, Steen H.
name: Host, Ole
name: Roncadelli, Marco
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We demonstrate that all properties of the hot X-ray emitting gas in galaxy clusters are completely determined by the underlying dark matter (DM) structure. Apart from the standard conditions of spherical symmetry and hydrostatic equilibrium for the gas, our proof is based on the Jeans equation for the DM and two simple relations which have recently emerged from numerical simulations: the equality of the gas and DM temperatures, and the almost linear relation between the DM velocity anisotropy profile and its density slope. For DM distributions described by the NFW or the Sersic profiles, the resulting gas density profile, the gas-to-total-mass ratio profile, and the entropy profile are all in good agreement with X-ray observations. All these profiles are derived using zero free parameters. Our result allows us to predict the X-ray luminosity profile of a cluster in terms of its DM content alone. As a consequence, a new strategy becomes available to constrain the DM morphology in galaxy clusters from X-ray observations. Our results can also be used as a practical tool for creating initial conditions for realistic cosmological structures to be used in numerical simulations.
description: 9 pages, 4 figures, including referees comments
Can one measure negative specific heat in the canonical statistical ensemble?
Creators: name: Staniscia, F.
name: Turchi, A.
name: Fanelli, D.
name: Chavanis, P. H.
name: De Ninno, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: According to thermodynamics, the specific heat of Boltzmannian short-range interacting systems is a positive quantity. Less intuitive properties are instead displayed by systems characterized by long-range interactions. In that case, the sign of specific heat depends on the considered statistical ensemble: negative specific heat can be found in isolated systems, which are studied in the framework of the microcanonical ensemble; on the other hand, it is generally recognized that a positive specific heat should always be measured in systems in contact with a thermal bath, for which the canonical ensemble is the appropriate one. We demonstrate that the latter assumption is not generally true: one can in principle measure negative specific heat also in the canonical ensemble if the system under scrutiny is non-Boltzmannian and/or out-of-equilibrium.
description: 5 pages, 3 figures
Becoming Dr. Mom
Creators: name: Ameriks, Yoko
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: Being a parent while going through a graduate program is not an easy task. I certainly could not have finished my doctorate on my own. I had an understanding advisor, a helpful husband, and supportive classmates. There were many times I just wanted to give up, but they were the ones who encouraged me to keep going. I am not an expert on being a parent or a student, but here are some of the things I learned as I tried to balance graduate work and family obligations.
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
“MENINA DO REQUEBRADO” –TRAJETÓRIAS, EXPRESSIVIDADES & PERFORMANCE DA CANTORA JOELMA A PARTIR DA CULTURA MUSICAL PARAENSE
Creators: name: Laggo, Matteus
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology

description: Por meio de interlocuções permeadas pelo viés antropológico, este trabalho busca investigar o conceito artístico-cultural presente na trajetória de vida e nos elementos corporais e performáticos da cantora paraense Joelma da Silva Mendes. Apoiado nessa perspectiva, tomo como referênciaconcepções de história de vida e trajetória de vida para discutir a construção dos perfis biográfico e artístico inerentes à Joelma, bem como, apresento determinadas noções de gestualidade e performance que podem ser relacionadas à atuação da cantora no cenário musical do BrasilPor meio de interlocuções permeadas pelo viés antropológico, este trabalho busca investigar o conceito artístico-cultural presente na trajetória de vida e nos elementos corporais e performáticos da cantora paraense Joelma da Silva Mendes. Apoiado nessa perspectiva, tomo como referênciaconcepções de história de vida e trajetória de vida para discutir a construção dos perfis biográfico e artístico inerentes à Joelma, bem como, apresento determinadas noções de gestualidade e performance que podem ser relacionadas à atuação da cantora no cenário musical do Brasil
The Effect of Output Processing on Subsequent Input Processing: A Free Recall Study
Creators: name: Suzuki, Wataru
name: Itagaki, Nobuya
name: Takagi, Tomomi
name: Watanabe, Tomoyuki
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: There is now growing evidence that output promotes second language acquisition. Recently, interest has been shown in examining (a) the effect of output processing on subsequent input processing, and (b) what factors mediate that effect. An experiment was conducted for two proficiency levels of Japanese learners of English under two conditions (output and non-output). First, participants in the output condition wrote a story in English based on four cartoon pictures (output task processing). Second, participants in both conditions read a model story describing the four cartoon pictures (subsequent input processing). Third, both sets of participants were asked, without any advance notice, to recall what they had read (written free recall test). Performance on the written free recall test suggests that (a) output tasks facilitated subsequent input processing, and (b) complex relationships existed among L2 proficiency levels, experiment conditions, and linguistic domains during subsequent input processing. These findings are discussed with reference to second language acquisition research. Implications for pedagogical practice are also considered.
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
Rosen-Zener model in cold molecule formation
Creators: name: Ishkhanyan, A.
name: Sokhoyan, R.
name: Joulakian, B.
name: Suominen, K. -A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The Rosen-Zener model for association of atoms in a Bose-Einstein condensate is studied. Using a nonlinear Volterra integral equation, we obtain an analytic formula for final probability of the transition to the molecular state for weak interaction limit. Considering the strong coupling limit of high field intensities, we show that the system reveals two different time-evolution pictures depending on the detuning of the frequency of the associating field. For both limit cases we derive highly accurate formulas for the molecular state probability valid for the whole range of variation of time. Using these formulas, we show that at large detuning regime the molecule formation process occurs almost non-oscillatory in time and a Rosen-Zener pulse is not able to associate more than one third of atoms at any time point. The system returns to its initial all-atomic state at the end of the process and the maximal transition probability is achieved when the field intensity reaches its peak. In contrast, at small detuning the evolution of the system displays large-amplitude oscillations between atomic and molecular populations. We find that the shape of the oscillations in the first approximation is defined by the field detuning only. Finally, a hidden singularity of the Rosen-Zener model due to the specific time-variation of the field amplitude at the beginning of the interaction is indicated. It is this singularity that stands for many of the qualitative and quantitative properties of the model. The singularity may be viewed as an effective resonance-touching.
The Critical Period Hypothesis: Support, Challenge, and Reconceptualization
Creators: name: Schouten, Andy
Publisher: name: Studies in Applied Linguistics and TESOL
Year: 2009

description: Given the general failure experienced by adults when attempting to learn a second or foreign language, many have hypothesized that a critical period exists for the domain of language learning. Supporters of the Critical Period Hypothesis (CPH) contend that language learning, which takes place outside of this critical period (roughly defined as ending sometime around puberty), will inevitably be marked by non-nativelike features. In opposition to this position, several researches have postulated that, although rare, nativelike proficiency in a second language is in fact possible for adult learners. Still others, in light of the robust debate and research both supporting and challenging the CPH, have reconceptualized their views regarding a possible critical period for language learning, claiming that in combination with age of exposure, sociological, psychological, and physiological factors must also be considered when determining the factors that facilitate and debilitate language acquisition. In this paper, a review of literature describing the support, challenges, and reconceptualizations of the CPH is provided.
description: Studies in Applied Linguistics and TESOL, Vol. 9 No. 1 (2009)
Beamforming in MISO Systems: Empirical Results and EVM-based Analysis
Creators: name: Duarte, Melissa
name: Sabharwal, Ashutosh
name: Dick, Chris
name: Rao, Raghu
Publisher: name: arXiv
Year: 2009
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We present an analytical, simulation, and experimental-based study of beamforming Multiple Input Single Output (MISO) systems. We analyze the performance of beamforming MISO systems taking into account implementation complexity and effects of imperfect channel estimate, delayed feedback, real Radio Frequency (RF) hardware, and imperfect timing synchronization. Our results show that efficient implementation of codebook-based beamforming MISO systems with good performance is feasible in the presence of channel and implementation-induced imperfections. As part of our study we develop a framework for Average Error Vector Magnitude Squared (AEVMS)-based analysis of beamforming MISO systems which facilitates comparison of analytical, simulation, and experimental results on the same scale. In addition, AEVMS allows fair comparison of experimental results obtained from different wireless testbeds. We derive novel expressions for the AEVMS of beamforming MISO systems and show how the AEVMS relates to important system characteristics like the diversity gain, coding gain, and error floor.
description: Submitted to IEEE Transactions on Wireless Communications, November 2009
Dynamics of a double pendulum with distributed mass
Creators: name: Rafat, M. Z.
name: Wheatland, M. S.
name: Bedding, T. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We investigate a variation of the simple double pendulum in which the two point masses are replaced by square plates. The double square pendulum exhibits richer behavior than the simple double pendulum and provides a convenient demonstration of nonlinear dynamics and chaos. It is also an example of an asymmetric compound double pendulum, which has not been studied in detail. We obtain the equilibrium configurations and normal modes of oscillation and derive the equations of motion, which are solved numerically to produce Poincaré sections. We show how the behavior varies from regular motion at low energies, to chaos at intermediate energies, and back to regular motion at high energies. We also show that the onset of chaos occurs at a significantly lower energy than for the simple double pendulum.
description: 20 pages, 5 figures
DEP Bulletin: Volume 41 Issue 23
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 2017

description: The DEP bulletin is a semi-monthly publication of the New Jersey Department of Environmental Protection. It contains a list of construction permit applications recently filed or acted upon by the Department along with a calendar of events of interest, a schedule of public hearings, and Environmental Impact Statements acted upon during the period.