cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Clinical Implications of inter-tumour, intra-tumour, and tumour microenvironment heterogeneity in B-cell lymphomas
Creators: name: Chan, Fong Chun
Publisher: name: University of British Columbia
Year: 2018

description: B-cell lymphomas are lymphoid neoplasms derived from mature B lymphocytes at various stages of B-cell development. Advances in sequencing have contributed to decoding the genomic landscapes underlying many subtypes of B-cell lymphomas. However, it remains unclear why some B-cell lymphoma patients suffer from disease progression. A major factor contributing to disease progression is tumour heterogeneity, a consequence of branched evolutionary processes, and microenvironment heterogeneity leading to variation in the composition and properties of non-malignant cells infiltrating and surrounding the cancer. A thorough characterization of these forms of diversity in B-cell lymphomas and their association with disease progression has not been undertaken. As such, the overarching hypothesis of this thesis is that uncharacterized inter-tumour, intra-tumour, and tumour microenvironment heterogeneity impacts disease progression in B-cell lymphomas. In particular, this thesis is focused on studying these types of heterogeneity in three subtypes of B-cell lymphomas and their implications on disease progression. First, I explored inter-tumour heterogeneity in primary specimens of diffuse large B-cell lymphoma patients. I identified novel RCOR1 deletions and their corresponding transcriptional signature in a subset of patients that stratified patients into good and poor outcome following first-line treatment. Secondly, I explored intra-tumour heterogeneity in histologically transformed and early progressed follicular lymphoma patients using serial samples of their primary and transformed/progressed specimens. Through the inference of clonal dynamic patterns, I revealed divergent evolution patterns and identified novel genes underlying these distinct clinical end points. Thirdly, I explored tumour microenvironment (TME) heterogeneity in classical Hodgkin lymphoma relapse patients through serial sampling of primary pretreatment and relapse specimens. I demonstrated how specific TME dynamic patterns can inform on treatment failure. Moreover, I derived a novel, clinically applicable prognostic model (RHL30), based on the TME composition at relapse that predicts response to second-line treatment. Collectively, the work in this thesis constitutes a step forward in our characterization of tumour and microenvironment heterogeneity in B-cell lymphomas and its association with disease progression. The results presented here will aid in the determination of precise therapeutic approaches for individual lymphoma patients.
การศึกษาพฤติกรรมการถ่ายเทความร้อนระหว่างปรากฏการณ์อุณหภูมิผกผัน
Creators: name: นวพล ไตรพันธ์วณิช
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยเทคโนโลยีราชมงคลธัญบุรี
Year: 2021
Subjects: การถ่ายเทความร้อน
ปรากฏการณ์อุณหภูมิผกผัน
การแพร่กระจายความเข้มข้น

description: Journal of Applied Research on Science and Technology, 20, 2, 70-87
Neutrino masses from clustering of red and blue galaxies: a test of astrophysical uncertainties
Creators: name: Swanson, Molly E. C.
name: Percival, Will J.
name: Lahav, Ofer
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Combining measurements of the galaxy power spectrum and the cosmic microwave background (CMB) is a powerful means of constraining the summed mass of neutrino species sum(m_nu), but is subject to systematic uncertainties due to non-linear structure formation, redshift-space distortions and galaxy bias. We empirically test the robustness of neutrino mass results to these effects by separately analyzing power spectra of red and blue galaxies from the Sloan Digital Sky Survey (SDSS-II) Data Release 7 (DR7), combined with the CMB five-year Wilkinson Microwave Anisotropy Probe (WMAP5) data. We consider fitting for a range of maximum wavenumber k using twelve different galaxy bias models. For example, using a new model based on perturbation theory and including redshift space distortions (Saito et al. 2009), the all-galaxy power spectrum combined with WMAP5 for a wavenumber range of k<0.2 Mpc/h yields 95% CL sum(m_nu)<0.46 eV. The red and blue galaxy power spectra give 0.41 and 0.63 eV respectively for this model. Using mock catalogues, we find the expected difference in these limits assuming a true neutrino mass of zero is 0.10 + or - 0.14 eV. Thus the difference of 0.22 eV between upper limits on neutrino mass for red and blue galaxies is approximately 1 sigma from the expected value. We find similar results for the other models and k ranges tested. This indicates good agreement for current data but hints at possible issues for next-generation surveys. Being able to perform such systematic tests is advantageous, and future surveys would benefit by including broad galaxy populations and luminosities that enable such a decomposition.
description: 15 pages, 6 figures, matches version published in MNRAS
Anisotropic surface tension of buckled fluid membrane
Creators: name: Noguchi, Hiroshi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Solid sheets and fluid membranes exhibit buckling under lateral compression. Here, it is revealed that fluid membranes have anisotropic buckling surface tension contrary to solid sheets. Surprisingly, the surface tension perpendicular to the buckling direction shows stronger dependence than that parallel to it. Our theoretical predictions are supported by numerical simulations of a meshless membrane model. This anisotropic tension can be used to measure the membrane bending rigidity. It is also found phase synchronization occurs between multilayered buckled membranes.
description: 7 pages, 6 figures
Probing spacetime noncommutative constant via charged astrophysical black hole lensing
Creators: name: Ding, Chikun
name: Jing, Jiliang
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the influence of the spacetime noncommutative parameter on the strong field gravitational lensing in the noncommutative Reissner-Nordström black-hole spacetime. Supposing that the gravitational field of the supermassive central object of the Galaxy is described by this metric, we estimate the numerical values of the coefficients and observables for strong gravitational lensing. Our results show that with the increase of the parameter $\sqrt{\vartheta}$, the observables $θ_{\infty}$ and $r_m$ decrease, while $s$ increases. Our results also show that i) if $\sqrt{\vartheta}$ is strong, the observables are close to those of the noncommutative Schwarzschild black hole lensing; ii) if $\sqrt{\vartheta}$ is weak, the observables are close to those of the commutative Reissner-Nordström black hole lensing; iii) the detectable scope of $\vartheta$ in a noncommutative Reissner-Nordström black hole lensing is $0.12\leq\sqrt{\vartheta}\leq0.26$, which is wider than that in a noncommutative Schwarzschild black hole lensing, $0.18\leq\sqrt{\vartheta}\leq0.26$. This may offer a way to probe the spacetime noncommutative constant $\vartheta$ by the astronomical instruments in the future.
description: 17 pages, 7 figures, 4 tables, to appear in JHEP
Vitamin C induced epigenomic remodelling in IDH1 mutant acute myeloid leukemia
Creators: name: Mingay, Matthew
Publisher: name: University of British Columbia
Year: 2017

description: The genomes of myeloid malignancies are characterized by epigenomic abnormalities. Heterozygous, inactivating TET2 mutations and neomorphic IDH mutations are recurrent and mutually exclusive in acute myeloid leukemia genomes. Ascorbic Acid (vitamin C) has been shown to stimulate the catalytic activity of TET2 in vitro and thus we sought to explore its effect in a leukemic model expressing IDH1R132H. Vitamin C treatment induced a reduction in cell proliferation and an increase in the expression of genes involved in leukocyte differentiation in IDH1R132H expressing cells. Genome-wide assessment of 5mC and 5hmC revealed a set of vitamin C induced differentially methylated regions (DMRs), many of which displayed demethylation at myeloid enhancers and regions containing binding elements for the hematopoietic transcription factors RUNX1 and PU.1. We observed a significant loss of PU.1 DNA binding and an increase of RUNX1 binding that was accompanied by demethylation at RUNX1 binding sites within enhancers. Genome-wide profiling of histone modifications revealed a negative correlation between H3K4 methylation and DNA methylation at vitamin C induced DMRs. In addition, vitamin C induced an increase in H3K27ac flanking sites bound by RUNX1. Taken together our results suggest that vitamin C is able to stimulate epigenetic remodelling of transcription factor binding sites and regulatory elements to drive differentiation in a leukemic model.
The clustering of galaxies and galaxy clusters: constraints on primordial non-Gaussianity from future wide-field surveys
Creators: name: Fedeli, Cosimo
name: Carbone, Carmelita
name: Moscardini, Lauro
name: Cimatti, Andrea
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the constraints on primordial non-Gaussianity with varied bispectrum shapes that can be derived from the power spectrum of galaxies and clusters of galaxies detected in future wide field optical/near-infrared surveys. Having in mind the proposed ESA space mission \emph{Euclid} as a specific example, we combine the spatial distribution of spectroscopically selected galaxies with that of weak lensing selected clusters. We use the physically motivated halo model in order to represent the correlation function of arbitrary tracers of the Large Scale Structure in the Universe. As naively expected, we find that galaxies are much more effective in jointly constrain the level of primordial non-Gaussianity $f_\mathrm{NL}$ and the amplitude of the matter power spectrum $σ_8$ than clusters of galaxies, due to the much lower abundance of the latter that is not adequately compensated by the larger effect on the power spectrum. Nevertheless, combination of the galaxy power spectrum with the cluster-galaxy cross spectrum can decrease the error on the determination of $f_\mathrm{NL}$ by up to a factor of $\sim 2$. This decrement is particularly evident for the less studied non-Gaussian bispectrum shapes, the so-called enfolded and the orthogonal ones. Setting constraints on these models can shed new light on various aspects of the physics of the early Universe, and it is hence of extreme importance. By combining the power spectra of clusters and galaxies with the cluster-galaxy cross spectrum we find constraints on primordial non-Gaussianity of the order $Δf_\mathrm{NL} \sim $ a few, competitive and possibly superior to future CMB experiments.
description: 16 pages, 10 figures, 4 tables. Accepted for publication on MNRAS
The Ultraviolet Finiteness of N=8 Supergravity
Creators: name: Kallosh, Renata
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study counterterms (CT's), candidates for UV divergences in the four-dimensional N=8 supergravity. They have been constructed long ago in a Lorentz covariant on shell superspace and recently in the chiral light-cone (LC) superspace. We prove that all of these CT's are ruled out since they are not available in the real LC superspace. This implies the perturbative UV finiteness of d=4 N=8 supergravity under the assumption that supersymmetry and continuous E7 symmetry are anomaly-free. The proof, based on the chiral nature of CT's in the LC superspace, is a generalization of the perturbative F-term non-renormalization theorem for N=8 supergravity.
description: 18 pages
Advanced noise reduction techniques for ultra-low phase noise optical-to-microwave division with femtosecond fiber combs
Creators: name: Zhang, W.
name: Xu, Z.
name: Lours, M.
name: Boudot, R.
name: Kersale, Y.
name: Luiten, A. N.
name: Coq, Y. Le
name: Santarelli, G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We report what we believe to be the lowest phase noise optical-to-microwave frequency division using fiber-based femtosecond optical frequency combs: a residual phase noise of -120dBc/Hz at 1 Hz offset from a 11.55GHz carrier frequency. We furthermore report a detailed investigation into the fundamental noise sources which afflicts the division process itself. Two frequency combs with quasi-identical configurations are referenced to a common ultrastable cavity laser source. To identify each of the limiting effects we implement an ultra-low noise carrier-suppression measurement system, which circumvents the detection and amplification noise of more conventional techniques. This technique now allows the suppression of these unwanted sources of noise to very low levels. In the Fourier frequency range of ~200 Hz to 100 kHz, a fed-forward technique based on a voltage-controlled phase shifter delivers a further noise reduction of 10 dB. For lower Fourier frequencies, optical power stabilization is implemented in order to reduce the relative intensity noise which causes unwanted phase noise through power to phase conversion in the detector. We implement and compare two possible control schemes based on an acousto-optical modulator and comb pump current. We also present wideband measurements on the relative intensity noise of the fiber comb.
description: 16 pages, 10 figures accepted in
Supersymmetric Galileons
Creators: name: Khoury, Justin
name: Lehners, Jean-Luc
name: Ovrut, Burt A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Galileon theories are of considerable interest since they allow for stable violations of the null energy condition. Since such violations could have occurred during a high-energy regime in the history of our universe, we are motivated to study supersymmetric extensions of these theories. This is carried out in this paper, where we construct generic classes of N=1 supersymmetric Galileon Lagrangians. They are shown to admit non-equivalent stress-energy tensors and, hence, vacua manifesting differing conditions for violating the null energy condition. The temporal and spatial fluctuations of all component fields of the supermultiplet are analyzed and shown to be stable on a large number of such backgrounds. In the process, we uncover a surprising connection between conformal Galileon and ghost condensate theories, allowing for a deeper understanding of both types of theories.
description: 41 pages, v2: added a reference
RKKY Interaction in Graphene Calculated Following Ruderman and Kittel
Creators: name: Kogan, E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This paper has been withdrawn because it has been by far superseded by the Author's post arXiv:1108.1306v6, which was published on 30/08/2011.
description: This paper has been withdrawn because it has been by far superseded by the Author's post arXiv:1108.1306v6, which was published on 30/08/2011
Electronic properties of a graphene antidot in magnetic fields
Creators: name: Park, P. S.
name: Kim, S. C.
name: Yang, S. -R. Eric
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on several unusual properties of a graphene antidot created by a piecewise constant potential in a magnetic field. We find that the total probability of finding the electron in the barrier can be nearly one while it is almost zero outside the barrier. In addition, for each electron state of a graphene antidot there is a dot state with exactly the same wavefunction but with a different energy. This symmetry is a consequence of Klein tunneling of Dirac electrons. Moreover, in zigzag nanoribbons we find strong coupling between some antidot states and zigzag edge states. Experimental tests of these effects are proposed.
Controlling and Detecting Spin Correlations of Ultracold Atoms in Optical lattices
Creators: name: Trotzky, Stefan
name: Chen, Yu-Ao
name: Schnorrberger, Ute
name: Cheinet, Patrick
name: Bloch, Immanuel
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We report on the controlled creation of a valence bond state of delocalized effective-spin singlet and triplet dimers by means of a bichromatic optical superlattice. We demonstrate a coherent coupling between the singlet and triplet states and show how the superlattice can be employed to measure the singlet-fraction employing a spin blockade effect. Our method provides a reliable way to detect and control nearest-neighbor spin correlations in many-body systems of ultracold atoms. Being able to measure these correlations is an important ingredient to study quantum magnetism in optical lattices. We furthermore employ a SWAP operation between atoms being part of different triplets, thus effectively increasing their bond-length. Such SWAP operation provides an important step towards the massively parallel creation of a multi-particle entangled state in the lattice.
description: 6 pages, 4 figures
Finite temperature effective string corrections in (3+1)D SU(2) lattice gauge theory
Creators: name: Bonati, Claudio
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the effective string corrections to the inter-quark potential at finite temperature by simulating the SU(2) lattice gauge theory in four dimensions. We provide the first numerical evidence that the logarithmic correction to the potential, which was recently proposed to be a signature of the effective string at finite temperature, is universal also in (3+1)D gauge theory, thus extending previous results limited to the (2+1)D case.
description: 10 pages, 2 eps figures. Published version
Recovering cores and cusps in dark matter haloes using mock velocity field observations
Creators: name: de Naray, Rachel Kuzio
name: Kaufmann, Tobias
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present mock DensePak Integral Field Unit (IFU) velocity fields, rotation curves, and halo fits for disc galaxies formed in spherical and triaxial cuspy dark matter haloes, and spherical cored dark matter haloes. The simulated galaxies are "observed" under a variety of realistic conditions to determine how well the underlying dark matter halo can be recovered and to test the hypothesis that cuspy haloes can be mistaken for cored haloes. We find that the appearance of the velocity field is distinctly different depending on the underlying halo type. We also find that we can successfully recover the parameters of the underlying dark matter halo. Cuspy haloes appear cuspy in the data and cored haloes appear cored. Our results suggest that the cores observed using high-resolution velocity fields in real dark matter-dominated galaxies are genuine and cannot be ascribed to systematic errors, halo triaxiality, or non-circular motions.
description: 10 pages, 14 figures, accepted for publication by MNRAS. Explicit derivation of the inner slope of the dark haloes added. A high resolution version of the paper can be found at http://www.itp.uzh.ch/~tkaufman/ms_v2.pdf
Systematics of the charged-hadron P_T spectrum and the nuclear suppression factor in heavy-ion collisions from sqrt{s}=200 GeV to sqrt{s} =2.76 TeV
Creators: name: Renk, Thorsten
name: Holopainen, Hannu
name: Paatelainen, Risto
name: Eskola, Kari J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, our goal is to make a simultaneous analysis of the high- and low-P_T parts of the charged-hadron P_T spectrum measured by the ALICE collaboration in central Pb-Pb collisions at sqrt{s}=2.76 TeV at the Large Hadron Collider (LHC), based on models which have been successfully applied and constrained in Au-Au collisions at Relativistic Heavy Ion Collider (RHIC). For the hydrodynamical modeling with which we obtain the low-P_T spectrum, we have computed the initial conditions based on perturbative QCD (pQCD) minijet production and saturation. The sensitivity of the obtained charged-hadron P_T spectrum on the hydrodynamic model parameters is studied. For the high-P_T part, we apply a number of parton-medium interaction models, which are tuned to describe the nuclear suppression factor R_AA measured at the RHIC in central Au-Au collisions at sqrt{s}=200 GeV. We find that the higher kinematic reach of the LHC, manifest in the hardening of the pQCD parton spectral slope, is in principle very efficient in discriminating the various models. However, due to the uncertainties in the p-p baseline, none of the tested models can be firmly ruled out with the present ALICE data. Comparison with the LHC data in this approach also shows that the matching of the hydrodynamic and pQCD+jet quenching components leaves fairly little room for other hadron production mechanisms in the cross-over region P_T=4-5 GeV.
description: 12 pages, 4 figures, submitted to PRC
Supplemental data.rtf
Creators: name: Shenoy, roopashree
name: jain, animesh
name: k, Bhagyalakshmi
name: B Shetty, sneha
name: Shirali, arun
name: Ramakrishna, anand
Publisher: name: figshare
Year: 2021
Subjects: subject: Education
subject: Physiology
subject: FOS: Biological sciences

description: Study guide is an essential tool in Task based learning (TskBL). It is helpful to the learner and the facilitator. The guide contains all the important instructions and the resources essential for the TskBL. A student study guide, tutor study guide and standardized patient guide for the topic:Hypertension is provided. Student study guide equips learners with the pre-reading resources, learning objectives, timeline and sequence of events in TskBL. The tutor study guide has details of role of the tutor, learning objectives, timeline, sequence of events in TskBL, details of the case, questions to be asked during discussion, outline for development of generic skills through role play, list of other similar cases and debriefing session particulars. A standardized patient guide is helpful in standardized patient training. It has the opening statement, patient demographics, patient agenda, behaviour and a detailed case history.
Five-body resonances of 8He using the complex scaling method
Creators: name: Myo, Takayuki
name: Ando, Ryosuke
name: Kato, Kiyoshi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The 0+ states of 8He are studied in a five-body 4He+n+n+n+n cluster model. Many-body resonances are treated on the correct boundary condition as Gamow states using the complex scaling method. The 0+_2 state of 8He is predicted as a five-body resonance in the excitation energy of 6.3 MeV with a width of 3.2 MeV, which mainly has a (p_{3/2})^2(p_{1/2})^2 configuration. In this state, number of the 0+ neuron pair shows almost two, which is different from the ground state having a large amount of the 2+ pair component. The monopole transition of 8He from the ground state into the five-body unbound states is also evaluated. It is found that the 7He+n component mostly exhausts the strength, while the 0+_2 contribution is negligible. The final states are dominated by 6He+n+n, not 4He+n+n+n+n. The results indicate the sequential breakup process of 8He to 7He+n to 6He+n+n by the monopole excitation.
description: 6 pages, 6 figures, table I is updated for the experimental values
Instructor implemented Positive Behaviour Support in a fitness program for adolescents and adults with autism
Creators: name: Rodas, Tara
Publisher: name: University of British Columbia
Year: 2017

description: Research indicates that there is a need for fitness and recreational opportunities for adolescents and young adults with autism. There is also research indicating there is a need for instructor training in the areas of behaviour support, communication strategies, and curriculum development. The study investigated the effectiveness of the I CAN Get fit program, a community-based group fitness program for adolescents and young adults with autism. The program uses Behavioural Skills Training (BST) to teach fitness instructors to implement Positive Behaviour Support (PBS) to support the participation of individuals with autism. Fourteen adolescents and young adults with autism and eight fitness instructors participated in the study. A randomized control trial with a waitlist control group evaluated the effects of the I CAN Get Fit program. Dependent measures included instructor fidelity of implementation of PBS strategies, and participant engagement, problem behavior, physical fitness, social relationships and community participation. Direct observation data and assessment instrument-based data were gathered across three assessment periods: Baseline, post-intervention and follow-up. Results documented statistically significant improvements in instructor use of PBS strategies and in participant engagement and problem behavior following implementation of the fitness program. However, no change within or between groups was evidenced in physical fitness and in community participation. Although improvement was shown in interpersonal relationships post-intervention for both groups, these changes were non-significant when compared to the first baseline. Results are discussed in terms of relations and unique contributions to the literature, implications for the provision of community-based fitness programs to adolescents and young adults with autism, limitations and cautions, and future research. Keywords: autism; fitness; recreation; positive behaviour support; behavioural skills training
Channeling in direct dark matter detection III: channeling fraction in CsI crystals
Creators: name: Bozorgnia, Nassim
name: Gelmini, Graciela B.
name: Gondolo, Paolo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The channeling of the ion recoiling after a collision with a WIMP changes the ionization signal in direct detection experiments, producing a larger signal scintillation or ionization than otherwise expected. We give estimates of the fraction of channeled recoiling ions in CsI crystals using analytic models produced since the 1960's and 70's to describe channeling and blocking effects.
description: 14 pages, 18 figures, Accepted for publication in JCAP on 28 October 2010, updated references
Quartification with T' Flavor
Creators: name: Eby, David A.
name: Frampton, Paul H.
name: He, Xiao-Gang
name: Kephart, Thomas W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the simplest (non-quiver) unified theories, fermion families are often treated sequentially and a flavor symmetry may act similarly. As an alternative with non-sequential flavor symmetry, we consider a model based on the group (T'*Z_2)_global * [SU(3)^4]_local which combines the predictions of T' flavor symmetry with the features of a unified quiver gauge theory. The model accommodates the relationships between mixing angles separately for neutrinos, and for quarks, which have been previously predicted with T'. This quiver unification theory makes predictions of several additional gauge bosons and bifundamental fermions at the TeV scale.
description: 8 pages, LaTex; added references and clarified
Production of Triply Heavy Baryons at LHC
Creators: name: Chen, Yu-Qi
name: Wu, Su-Zhi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Triply heavy baryons are very interesting hadrons to be explored for they provide particular information about strong interactions, hadron structures, and weak decays of heavy baryons. We calculate the hadronic production cross sections of the Ω_{ccc} and the Ω_{ccb}, which are dominated by the gg fusion subprocesses containing 4362 and 1454 Feynman diagrams, respectively. A method for generating and calculating tree level Feynman diagrams automatically is developed to deal with complicated processes containing so many diagrams. Our results show that 10^4-10^5 events of triply heavy baryons can be accumulated for 10 fb^{-1} integrated luminosity at LHC. Signatures of the triply heavy baryons are pointed out, with emphasis on the decay modes Ω_{ccc} -> Ω_{sss} + 3 π^+ and Ω_{ccb} -> Ω_{sss} + 3 π^+ +π^-. We conclude that it is quite promising to discover them at LHC.
description: 32 pages, 7 figures, to appear in JHEP
(Re)turning to the poetic I/eye : towards a literacy of light
Creators: name: Rajabali, Anar
Publisher: name: University of British Columbia
Year: 2017

description: Rumi once wrote: “When I stop speaking, this poem will close and open its silent wings” (as cited in Barks, 1999, p. 66). This arts-based dissertation is a personal, poetic, and pedagogical study into the kinship between poetic discourse and spiritual expression where I attend to the question: what does it mean to dwell poetically? (Heidegger, 1971; Hölderin, 1984). I contextualize poetry as “the articulation of contemplative perception” (Laude, 2004, p. 11), “a phenomenology of the soul” (Bachelard, 1964, p. xxi), wherein poetic knowledge is a theoria (Lakhani, 2010). I refer to theoria as a way of intellectual seeing that recognizes the sacred in the mundane, which becomes central to my own poetic vision. In enacting this (re)search where writing is the inquiry (Richardson, 2000), I use phenomenologically informed perspectives of a/r/tography in qualitative research that “seeks to show and evoke the presence of a lived experience” (Todres, 2007, p. xi), where theorizing through the inquiry process brings forth understandings (Irwin & Springgay, 2008). In this meta work of researching poetry through poetry, I consider each poetic turn a mediation and meditation in “living a life of deep meaning through perceptual practices that reveal what was once hidden” (Irwin, as cited in Pinar, 2004, p. 10). In a research endeavour that is revelatory, this research site becomes insight. I draw upon Deleuze and Guattari’s (1987) metaphor of the rhizome, the underground root system of plants and theoretical underpinning of a/r/tography, which I reconceptualise in the sky to represent my dissertation as writing into a poetics of light. In visualizing what I imagine as a “sky of inquiry,” I make a call for research that has a “wider epistemological embrace” (Todres, 2007, p. 180) in the poetic gaze changing how, what and whom we see (Leggo, 2004a; Cheetham, 2012). Through lyrical ways, each layer of my inquiry sheds light towards understanding poetry as a contemplative pedagogy. In (re)turning to the poetic I/eye, this research represents a pledge to pedagogical encounters that nurture spiritual literacy where purposeful engagement in creative practices can become a gateway to the realms of spirituality.
A Case Study for PoLaR Explorations with Machine Learning
Creators: name: Brugos, Alejna
name: Veilleux, Nanette
name: Ahn, Byron T.
name: Shattuck-Hufnagel, Stefanie
name: Sunwoo Jeong
Publisher: name: Open Science Framework
Year: 2023

description: Repository for ICPhS 2023 paper: "Methods for PoLaR Explorations with Machine Learning: Grammatical Analysis of Intonation without Grammatical Labels"
Different SO(10) Paths to Fermion Masses and Mixings
Creators: name: Altarelli, Guido
name: Blankenburg, Gianluca
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently SO(10) models with type-II see-saw dominance have been proposed as a promising framework for obtaining Grand Unification theories with approximate Tri-bimaximal (TB) mixing in the neutrino sector. We make a general study of SO(10) models with type-II see-saw dominance and show that an excellent fit can be obtained for fermion masses and mixings, also including the neutrino sector. To make this statement more significant we compare the performance of type-II see-saw dominance models in fitting the fermion masses and mixings with more conventional models which have no built-in TB mixing in the neutrino sector. For a fair comparison the same input data and fitting procedure is adopted for all different theories. We find that the type-II dominance models lead to an excellent fit, comparable with the best among the available models, but the tight structure of this framework implies a significantly larger amount of fine tuning with respect to other approaches.
description: 24 pages, References and minor wording changes added
Probabilistische Bewertung der Zuverlässigkeit von Flussdeichen unter hydraulischen und geotechnischen Gesichtspunkten
Creators: name: Weißmann, Rainer
Publisher: name: Karlsruhe
Year: 2014
Subjects: Deich
Geotechnik
Probabilistik
Zuverlässigkeit
Versagen

description: The deterministic approach for the design of river dikes is explained. The stability proofs are transferred to the probabilistic evaluation concept and the failure scenarios are visualized in the fault tree for river dikes. It is then extended in order to realistically reproduce individual failure processes in the developed framework of the probabilistic model. Overall, the proposed probabilistic model enables for a more realistic and more meaningful assessment of the reliability of river dikes.
Particle motion in Horava-Lifshitz black hole space-times
Creators: name: Enolskii, Victor
name: Hartmann, Betti
name: Kagramanova, Valeria
name: Kunz, Jutta
name: Laemmerzahl, Claus
name: Sirimachan, Parinya
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the particle motion in the space-time of a Kehagias-Sfetsos (KS) black hole. This is a static spherically symmetric solution of a Horava-Lifshitz gravity model that reduces to General Relativity in the IR limit and deviates slightly from detailed balance. Taking the viewpoint that the model is essentially a (3+1)-dimensional modification of General Relativity we use the geodesic equation to determine the motion of massive and massless particles. We solve the geodesic equation exactly by using numerical techniques. We find that neither massless nor massive particles with non-vanishing angular momentum can reach the singularity at r=0. Next to bound and escape orbits that are also present in the Schwarzschild space-time we find that new types of orbits exist: manyworld bound orbits as well as two-world escape orbits. We also discuss observables such as the perihelion shift and the light deflection.
description: 16 pages including 13 figures; minor changes, to match version accepted for publication in Phys. Rev. D
Magnetrongesputterte Oxidationsschutzschichten für Mo-Si-B-Legierungen
Creators: name: Lange, Annika
Publisher: name: Karlsruhe
Year: 2014
Subjects: Mo-Si-B-Legierungen
Magnetronsputtern
Oxidationsschutzschichten
Optische Glimmentlandungsspektroskopie
Triebwerkstechnologien

description: Ein- und zweilagigen Oxidationsschutzschichten für Mo-Si-B-Legierungen wurden durch Magnetronsputtern abgeschieden und bei 800-1300°C für maximal 100h getestet. Die 2-10µm dicken Schichten wurden mittels Röntgenbeugung, Rasterelektronenmikroskopie und Optischer Glimmentlandungsspektroskopie untersucht. Für letzteres Verfahren wurde eine Methode entwickelt. Proben mit Borosilikatglas-bildenden Schichten zeigten gegenüber Aluminiumoxid- und Titanoxid-haltigen die höchsten Lebensdauern.
Scaling Relation for Excitation Energy Under Hyperbolic Deformation
Creators: name: Ueda, Hiroshi
name: Nakano, Hiroki
name: Kusakabe, Koichi
name: Nishino, Tomotoshi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a one-parameter deformation for one-dimensional (1D) quantum lattice models, the hyperbolic deformation, where the scale of the local energy is proportional to cosh lambda j at the j-th site. Corresponding to a 2D classical system, the deformation does not strongly modify the ground state. In this situation, the effective Hamiltonian of the quantum system shows that the quasi particle is weakly bounded around the center of the system. By analyzing this binding effect, we derive scaling relations for the mean-square width of confinement, the energy correction with respect to the excitation gap Δ, and the deformation parameter $λ$. This finite-size scaling allows us to investigate excitation gap of 1D non-deformed bulk quantum systems.
description: 9 pages, 5 figures
The 3-Lie Algebra (2,0) Tensor Multiplet and Equations of Motion on Loop Space
Creators: name: Papageorgakis, Constantinos
name: Saemann, Christian
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that a recently found set of supersymmetric equations of motion for a 3-Lie algebra-valued (2,0) tensor multiplet finds a natural interpretation as supersymmetric gauge field equations on loop space. We find that BPS solutions to these equations yield a previously proposed nonabelian extension of the selfdual string. We describe an ADHMN-like construction that allows for the explicit construction of such BPS solutions.
description: 1+19 pages, minor changes, published version
Gerollte brechende Röntgenfolienlinsen
Creators: name: Vogt, Harald
Publisher: name: Karlsruhe
Year: 2014
Subjects: Röntgenlinsen
brechend
X-ray
refractive

description: Gerollte, refraktive Röntgenlinsen bieten eine kostengünstige Alternative zu bestehenden Röntgenoptiken. Dieses Linsenprinzip ist hinsichtlich des Verhältnisses von Brechkraft zu Absorption optimiert und es bietet die Möglichkeit die Messzeit in Diffraktometrieexperimenten wesentlich zu reduzieren. Diese Arbeit beschäftigt sich mit der Entwicklung einer neuen Herstellmethode, der Optimierung der Form sowie der Entwicklung von Simulationsmöglichkeiten für diese Linsen.
Performance, Power and Cooling Trade-Offs with NCFET-based Many-Cores
Creators: name: Rapp, Martin
name: Salamin, Sami
name: Amrouch, Hussam
name: Pahwa, Girish
name: Chauhan, Yogesh
name: Henkel, Jörg
Publisher: name: Association for Computing Machinery (ACM)
Year: 2019
Subjects: Negative Capacitance
NCFET
FinFET
Many-Cores
Processor Performance
Emerging Technology

description: Negative Capacitance Field-Effect Transistor (NCFET) is an emerging technology that incorporates a ferroelectric layer within the transistor gate stack to overcome the fundamental limit of sub-threshold swing in transistors. Even though physics-based NCFET models have been recently proposed, system-level NCFET models do not exist and research is still in its infancy. In this work, we are the first to investigate the impact of NCFET on performance, energy and cooling costs in many-core processors. Our proposed methodology starts from accurate physics models all the way up to the system level, where the performance and power of a many-core are widely affected. Our new methodology and system-level models allow, for the first time, the exploration of the novel trade-offs between performance gains and power losses that NCFET now offers to system-level designers. We demonstrate that an optimal ferroelectric thickness does exist. In addition, we reveal that current state-of-the-art power management techniques fail when NCFET (with a thick ferroelectric layer) comes into play.
Online Optimization with Lookahead
Creators: name: Dunke, Fabian
Publisher: name: Karlsruhe
Year: 2014
Subjects: Online Optimization
Lookahead
Online-Optimierung

description: The main contributions of this thesis consist of the development of a systematic groundwork for comprehensive performance evaluation of algorithms in online optimization with lookahead and the subsequent validation of the presented approaches in theoretical analysis and computational experiments.
Einsatz virtueller Prototypen bei der akausalen Modellierung und Simulation von permanenterregten Synchronmaschinen. Application of virtual prototypes of permanent magnet synchronous machines by acausal modeling and simulation
Creators: name: Richter, Jan
name: Winzer, Patrick
name: Doppelbauer, Martin
Publisher: name: Karlsruhe
Year: 2013

description: Um elektrische Maschinen zeiteffizient entwickeln zu können, ist es notwendig, bereits vor dem Aufbau eines ersten Musters möglichst genaue Aussagen über das Betriebsverhalten treffen zu können. Zu diesem Zweck werden Maschinenmodelle eingesetzt, die je nach Modellierungstiefe unterschiedliche Effekte berücksichtigen oder vernachlässigen. Im Folgenden wird eine Methode vorgestellt, mit der durch Verbindung moderner Simulationswerkzeuge ein universelles Modell einer permanenterregten Synchronmaschine erstellt werden kann. Das dynamische Maschinenmodell berücksichtigt die magnetische Anisotropie des Rotors, die Eisensättigung, die Kreuzverkopplung, die Einflüsse der Nutung sowie die daraus resultierende Drehmomentwelligkeit und Oberschwingungen der Bewegungsspannung. Die benötigten Parameter werden automatisiert aus Finite-Element-Berechnungen gewonnen. Ein solches Modell kann für beliebige Untersuchungen in virtuellen Prüfumgebungen verwendet werden. Beispielhaft werden die Vorteile des Ansatzes für einen Traktionsmotor für Automobilanwendungen anhand der Simulation der Stromoberschwingungen, der Erprobung eines Stromregelkonzeptes, der Untersuchung des aktiven Kurzschlusses und der Berechnung der Spannungswelligkeit im Generatorbetrieb aufgezeigt. Durch automatische Parametrierung und akausale Modellierung steht so eine Toolkette zur Verfügung, die aus den Geometriedaten der Maschine das Verhalten umfassend beschreibt und sich damit wie ein virtueller Prototyp verhält.
Factorization of the Ising model form factors
Creators: name: Assis, M.
name: Maillard, J-M.
name: McCoy, B. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 34M55, 47E05, 81Qxx, 32G34, 34Lxx, 34Mxx, 14Kxx

description: We present a general method for analytically factorizing the n-fold form factor integrals $f^{(n)}_{N,N}(t)$ for the correlation functions of the Ising model on the diagonal in terms of the hypergeometric functions $_2F_1([1/2,N+1/2];[N+1];t)$ which appear in the form factor $f^{(1)}_{N,N}(t)$. New quadratic recursion and quartic identities are obtained for the form factors for n=2,3. For n= 2,3,4 explicit results are given for the form factors. These factorizations are proved for all N for n= 2,3. These results yield the emergence of palindromic polynomials canonically associated with elliptic curves. As a consequence, understanding the form factors amounts to describing and understanding an infinite set of palindromic polynomials, canonically associated with elliptic curves. From an analytical viewpoint the relation of these palindromic polynomials with hypergeometric functions associated with elliptic curves is made very explicitly, and from a differential algebra viewpoint this corresponds to the emergence of direct sums of differential operators homomorphic to symmetric powers of a second order operator associated with elliptic curve.
description: 37 pages
All-optical quantum computing with a hybrid solid-state processing unit
Creators: name: Pei, Pei
name: Zhang, Feng-Yang
name: Li, Chong
name: Song, He-Shan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop an architecture of hybrid quantum solid-state processing unit for universal quantum computing. The architecture allows distant and nonidentical solid-state qubits in distinct physical systems to interact and work collaboratively. All the quantum computing procedures are controlled by optical methods using classical fields and cavity QED. Our methods have prominent advantage of the insensitivity to dissipation process benefiting from the virtual excitation of subsystems. Moreover, the QND measurements and state transfer for the solid-state qubits are proposed. The architecture opens promising perspectives for implementing scalable quantum computation in a broader sense that different solid-state systems can merge and be integrated into one quantum processor afterwards.
description: 9 pages, 4 figures, supplement the demonstration for the efficiency and practicability of the proposal, supplement figure 4, and amend some words and phrases
Aluminum Hard Mask Technique for the Fabrication of High-Quality Submicron Nb/Al-AlOx/Nb Josephson Junctions
Creators: name: Kaiser, Christoph
name: Meckbach, J. M.
name: Ilin, K.
name: Lisenfeld, J.
name: Schäfer, R.
name: Ustinov, A. V.
name: Siegel, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have developed a combined photolithography and electron-beam lithography fabrication process for sub-\mum to \mum-size Nb/Al-AlOx/Nb Josephson junctions. In order to define the junction size and protect its top electrode during anodic oxidation, we developed and used the new concept of an aluminum hard mask. Josephson junctions of sizes down to 0.5 \mum2 have been fabricated and thoroughly characterized. We found that they have a very high quality, which is witnessed by the IV curves with quality parameters Vm > 50 mV and Vgap = 2.8 mV at 4.2 K, as well as IcRN products of 1.75-1.93 mV obtained at lower temperatures. In order to test the usability of our fabrication process for superconducting quantum bits, we have also designed, fabricated and experimentally investigated phase qubits made of these junctions. We found a relaxation time of T1 = 26 ns and a dephasing time of T2 = 21 ns.