cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analytic solution of the Schrodinger equation for an electron in the field of a molecule with an electric dipole moment
Creators: name: Alhaidari, A. D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Mathematical Physics (math-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We relax the usual diagonal constraint on the matrix representation of the eigenvalue wave equation by allowing it to be tridiagonal. This results in a larger solution space that incorporates an exact analytic solution for the non-central electric dipole potential cos(theta)/r^2, which was known not to belong to the class of exactly solvable potentials. As a result, we were able to obtain an exact analytic solution of the three-dimensional time-independent Schrodinger equation for a charged particle in the field of a point electric dipole that could carry a nonzero net charge. This problem models the interaction of an electron with a molecule (neutral or ionized) that has a permanent electric dipole moment. The solution is written as a series of square integrable functions that support a tridiagonal matrix representation for the angular and radial components of the wave operator. Moreover, this solution is for all energies, the discrete (for bound states) as well as the continuous (for scattering states). The expansion coefficients of the radial and angular components of the wavefunction are written in terms of orthogonal polynomials satisfying three-term recursion relations. For the Coulomb-free case, where the molecule is neutral, we calculate critical values for its dipole moment below which no electron capture is allowed. These critical values are obtained not only for the ground state, where it agrees with already known results, but also for excited states as well.
description: 20 pages, 1 figure, 4 tables
Quantized spin excitations in a ferromagnetic microstrip from microwave photovoltage measurements
Creators: name: Gui, Y. S.
name: Mecking, N.
name: Hu, C. -M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Quantized spin excitations in a single ferromagnetic microstrip have been measured using the microwave photovoltage technique. Several kinds of spin wave modes due to different contributions of the dipole-dipole and the exchange interactions are observed. Among them are a series of distinct dipole-exchange spin wave modes, which allow us to determine precisely the subtle spin boundary condition. A comprehensive picture for quantized spin excitations in a ferromagnet with finite size is thereby established. The dispersions of the quantized spin wave modes have two different branches separated by the saturation magnetization.
description: 4 pages, 3 figures
Robust adaptive control
Creators: name: Fu, Ye
Publisher: name: University of British Columbia
Year: 2011

description: This thesis describes discrete robust adaptive control methods based on using slow sampling and slow adaptation. For the stability analysis, we consider that the plant model order is not exactly known and assume that the estimation model order is lower than the plant model order. A stability condition is derived with a given upper limit for the adaptation gain which is related to a strictly positive real operator. Discussion of the relation between sampling and stability condition is then given. For the robust adaptive control design, we study slow adaptation and predictive control. For the slow adaptation, the main idea is to use only good estimates and use a compensation filter. Some frequency domain information on the plant is necessary for this method. For predictive control, we discuss the relationship between the extended control horizon and the critical sampling. For a simple case, it is shown that the larger extended control horizon brings more robust adaptive control. The purpose of this thesis is to provide robust discrete adaptive controller design guidelines, especially in such cases as using slow sampling frequency, slow adaptation rate. It is true that in practice, for various discrete adaptive control algorithms, slow sampling and slow adaptation rate will bring more robustness. The use of slow sampling and slow adaptation rate is simple and economic, thus a careful choice of sampling rate and adaptation rate is highly recommended. This thesis provides such guidelines for choosing proper sampling rate and adaptation rate for robust discrete adaptive control.
Strange Metals from Melting Correlated Insulators in Twisted Bilayer Graphene
Creators: name: Cha, Peter
name: Patel, Aavishkar A.
name: Kim, Eun-Ah
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Even as the understanding of the mechanism behind correlated insulating states in magic-angle twisted bilayer graphene converges towards various kinds of spontaneous symmetry breaking, the metallic "normal state" above the insulating transition temperature remains mysterious, with its excessively high entropy and linear-in-temperature resistivity. In this work, we focus on the effects of fluctuations of the order-parameters describing correlated insulating states at integer fillings of the low-energy flat bands on charge transport. Motivated by the observation of heterogeneity in the order-parameter landscape at zero magnetic field in certain samples, we conjecture the existence of frustrating extended range interactions in an effective Ising model of the order-parameters on a triangular lattice. The competition between short-distance ferromagnetic interactions and frustrating extended range antiferromagnetic interactions leads to an emergent length scale that forms stripe-like mesoscale domains above the ordering transition. The gapless fluctuations of these heterogeneous configurations are found to be responsible for the linear-in-temperature resistivity as well as the enhanced low temperature entropy. Our insights link experimentally observed linear-in-temperature resistivity and enhanced entropy to the strength of frustration, or equivalently, to the emergence of mesoscopic length scales characterizing order-parameter domains.
A Curious Geometrical Fact About Entanglement
Creators: name: Bengtsson, Ingemar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: I sketch how the set of pure quantum states forms a phase space, and then point out a curiousity concerning maximally entangled pure states: they form a minimal Lagrangian submanifold of the set of all pure states. I suggest that this curiousity should have an interesting physical interpretation.
description: Talk at the Vaxjo conference on Quantum Theory: Reconsideration of Foundations - 4
The targum (1974:Oct. 1 - 1974:Oct. 31)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1974

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
Identification and removal of non-Gaussian noise transients for gravitational wave searches
Creators: name: Steltner, Benjamin
name: Papa, Maria Alessandra
name: Eggenstein, Heinz-Bernd
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a new ${\it{gating}}$ method to remove non-Gaussian noise transients in gravitational wave data. The method does not rely on any a-priori knowledge on the amplitude or duration of the transient events. In light of the character of the newly released LIGO O3a data, glitch-identification is particularly relevant for searches using this data. Our method preserves more data than previously achieved, while obtaining the same, if not higher, noise reduction. We achieve a $\approx$ 2-fold reduction in zeroed-out data with respect to the gates released by LIGO on the O3a data. We describe the method and characterise its performance. While developed in the context of searches for continuous signals, this method can be used to prepare gravitational wave data for any search. As the cadence of compact binary inspiral detections increases and the lower noise level of the instruments unveils new glitches, excising disturbances effectively, precisely, and in a timely manner, becomes more important. Our method does this. We release the source code associated with this new technique and the gates for the newly released O3 data.
description: 10 pages, 7 figures, 3 tables. Accepted for publication in Phys Rev D
Pauli-Spin-Blockade Transport through a Silicon Double Quantum Dot
Creators: name: Liu, H. W.
name: Fujisawa, T.
name: Ono, Y.
name: Inokawa, H.
name: Fujiwara, A.
name: Takashina, K.
name: Hirayama, Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present measurements of resonant tunneling through discrete energy levels of a silicon double quantum dot formed in a thin silicon-on-insulator layer. In the absence of piezoelectric phonon coupling, spontaneous phonon emission with deformation-potential coupling accounts for inelastic tunneling through the ground states of the two dots. Such transport measurements enable us to observe a Pauli spin blockade due to effective two-electron spin-triplet correlations, evident in a distinct bias-polarity dependence of resonant tunneling through the ground states. The blockade is lifted by the excited-state resonance by virtue of efficient phonon emission between the ground states. Our experiment demonstrates considerable potential for investigating silicon-based spin dynamics and spin-based quantum information processing.
description: 10 pages,3 figures
Cooperative Transmission Protocols with High Spectral Efficiency and High Diversity Order Using Multiuser Detection and Network Coding
Creators: name: Han, Zhu
name: Zhang, Xin
name: Poor, H. Vincent
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Cooperative transmission is an emerging communication technique that takes advantages of the broadcast nature of wireless channels. However, due to low spectral efficiency and the requirement of orthogonal channels, its potential for use in future wireless networks is limited. In this paper, by making use of multiuser detection (MUD) and network coding, cooperative transmission protocols with high spectral efficiency, diversity order, and coding gain are developed. Compared with the traditional cooperative transmission protocols with single-user detection, in which the diversity gain is only for one source user, the proposed MUD cooperative transmission protocols have the merits that the improvement of one user's link can also benefit the other users. In addition, using MUD at the relay provides an environment in which network coding can be employed. The coding gain and high diversity order can be obtained by fully utilizing the link between the relay and the destination. From the analysis and simulation results, it is seen that the proposed protocols achieve higher diversity gain, better asymptotic efficiency, and lower bit error rate, compared to traditional MUD and to existing cooperative transmission protocols.
description: to appear, in the proceedings of IEEE International Conference on Communications, Glasgow, Scotland, 24-28 June 2007
Studying the $b\rightarrow s \ell^+\ell^-$ anomalies and $(g-2)_μ$ in $R$-parity violating MSSM framework with the inverse seesaw mechanism
Creators: name: Zheng, Min-Di
name: Zhang, Hong-Hao
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Inspired by the recent experimental results which show deviations from the standard model (SM) predictions of $b\rightarrow s \ell^+\ell^-$ transitions, we study the $R$-parity violating minimal supersymmetric standard model (RPV-MSSM) extended by the inverse seesaw mechanism. The trilinear $R$-parity violating terms, together with the chiral mixing of sneutrinos, induce the loop contributions to the $b\rightarrow s \ell^+\ell^-$ anomaly. We study the parameter space of the single-parameter scenario $C^{\rm NP}_{9,μ}=-C^{\rm NP}_{10,μ}=C_{\rm V}$ and the double-parameter scenario $(C_{\rm V},C_{\rm U})$, respectively, constrained by other experimental data such as $B_s-\bar{B}_s$ mixing, $B\rightarrow X_s γ$ decay, the lepton flavour violating decays, etc. Both the single-parameter and the double-parameter scenario can resolve the long existing muon anomalous magnetic moment problem as well, and allow the anomalous $t\rightarrow cg$ process to reach the sensitivity at the Future Circular hadron-hadron Collider (FCC-hh).
description: 49 pages, 7 figures, matches version accepted by PRD
Harmonic Generation from Laser-Irradiated Clusters
Creators: name: Kundu, M.
name: Popruzhenko, S. V.
name: Bauer, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The harmonic emission from cluster nanoplasmas subject to short, intense infrared laser pulses is analyzed by means of particle-in-cell simulations. A pronounced resonant enhancement of the low-order harmonic yields is found when the Mie plasma frequency of the ionizing and expanding cluster resonates with the respective harmonic frequency. We show that a strong, nonlinear resonant coupling of the cluster electrons with the laser field inhibits coherent electron motion, suppressing the emitted radiation and restricting the spectrum to only low-order harmonics. A pump-probe scheme is suggested to monitor the ionization dynamics of the expanding clusters.
description: 4 pages, ReVTeX4
Symmetries, conservation laws, and generalized travelling waves for a forced Ostrovsky equation
Creators: name: Anco, Stephen C.
name: Gandarias, Maria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Ostrovsky's equation with time- and space- dependent forcing is studied. This equation is model for long waves in a rotating fluid with a non-constant depth (topography). A classification of Lie point symmetries and low-order conservation laws is presented. Generalized travelling wave solutions are obtained through symmetry reduction. These solutions exhibit a wave profile that is stationary in a moving reference frame whose speed can be constant, accelerating, or decelerating.
description: 12 pages; typos corrected. Published version
Changes in the proteoglycans of the intervertebral disc cartilaginous end-plate with ageing and degeneration
Creators: name: Bishop, Paul Burton
Publisher: name: University of British Columbia
Year: 2011

description: This research examined the role of the cartilaginous end-plate (CEP) in ageing and degeneration of the human intervertebral disc (IVD). The matrix component affected primarily during degeneration of the IVD is proteoglycan (PG) (Pearce et al., 1987). The CEP, a hyaline cartilage found between the nucleus pulposus (NP) and the anulus fibrosus (AF) and the vertebral body, has been proposed as the source of the PG of the AF and NP. This study was undertaken to: 1) assess the similarity of CEP PG to PG from articular cartilage and IVD, (2) compare the CEP PG from healthy young discs with those from older degenerate discs (3) distinguish the changes in CEP PG due to ageing from those due to degeneration. The combined effects of ageing and degeneration were studied using end-plates from three healthy young spines and three post-mature spines; those to degeneration alone by comparison of two healthy with one degenerate disc in each of three spines. Altogether 86 CEP from 10 lumbar spines were examined. The CEP PG were prepared from 4M guanidinium chloride tissue extracts by density gradient ultracentrifugation under associative conditions. PG were separated into high and low molecular weight (M) components by Sepharose CL-2B chromatography. The PG and the high M and low M fractions were analysed for hexose (hex) and hexuronate (hexA) as measures of keratan sulphate and chondroitin sulphate, respectively. Also, the two fractions were analysed by composite agarose-polyacrylamide gel electrophoresis. The CEP PG resembled the IVD PG more closely than those of articular cartilage PG: the fraction excluded from Sepharose CL-2B was low, the hex/hexA ratio was high, and five electrophoretically distinct subspecies were seen. With degeneration, several properties of the CEP PG altered irrespective of age: the extractable .total proteoglycan fell, the ratio hex/hexA rose and number of electrophoretically distinct PG subspecies declined. With age, the sizes of the high M and low M fractions fell and the electrophoretic mobilities of the subspecies changed. These results suggested that degeneration involves both a conversion of aggregating to non-aggregating PG and the preferential biosynthesis of a keratan sulphate-rich over a chondroitin sulphate-rich PG.
On dilatation operator for a renormalizable theory
Creators: name: Sochichiu, Corneliu
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Given a renormalizable theory we construct the dilatation operator, in the sense of generator of RG flow of composite operators. The generator is found as a differential operator acting on the space of normal symbols of composite operators in the theory. In the spirit of AdS/CFT correspondence, this operator is interpreted as the Hamiltonian of the dual theory. In the case of a field theory with non-abelian gauge symmetry the resulting system is a matrix model. The one-loop case is analyzed in details and it is shown that we reproduce known results from N=4 supersymmetric Yang-Mills theory.
description: 26 pages, no figures
ThumbTrak: Recognizing Micro-finger Poses Using a Ring with Proximity Sensing
Creators: name: Sun, Wei
name: Li, Franklin Mingzhe
name: Huang, Congshu
name: Lei, Zhenyu
name: Steeper, Benjamin
name: Tao, Songyun
name: Tian, Feng
name: Zhang, Cheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: ThumbTrak is a novel wearable input device that recognizes 12 micro-finger poses in real-time. Poses are characterized by the thumb touching each of the 12 phalanges on the hand. It uses a thumb-ring, built with a flexible printed circuit board, which hosts nine proximity sensors. Each sensor measures the distance from the thumb to various parts of the palm or other fingers. ThumbTrak uses a support-vector-machine (SVM) model to classify finger poses based on distance measurements in real-time. A user study with ten participants showed that ThumbTrak could recognize 12 micro finger poses with an average accuracy of 93.6%. We also discuss potential opportunities and challenges in applying ThumbTrak in real-world applications.
description: MobileHCI '21: The ACM International Conference on Mobile Human-Computer Interaction, September 27 - October 1, 2021, Toulouse, France
Plan P - A Publishers' Offer to Institutions and Funders to Transform to Open Science
Creators: name: Eysenbach, Gunther
Publisher: name: Zenodo
Year: 2021

description: Plan P (http://planp.science) is JMIR Publication’s collaborative proposal for truly open scholarly communications and a framework for academic institutions and funders to facilitate a transformation towards Open Science. Plan P supports a “preprint first” publication model (PRC: Preprint - Review - Curate) by creating a platform for rapid AI-supported peer-review of preprints, editorial prospecting of preprints, and publication of curated peer-reviewed preprints in the overlay journal series JMIRx or - via a “manuscript marketplace” - in any other journal. Hashtag communities are peer-review communities, which include traditional journals but can also be other communities around a certain topical interest, can be targeted by preprint authors by using hashtags in their abstract and are being credited in published preprints. Plan P is also a business model that distributes the costs for peer-review and publication between institutions and funders. Encouragement of Registered Reports is another aspect of Plan P. Finally, Plan P creates research assessment metrics for institutions that go beyond citation-based approaches, measuring adherence to open science best practices. The ultimate goal of this endeavor is to develop the easiest path for authors to create transparent work by cataloging their entire research effort - from methodology to preliminary results and on to publication - as well as creating an environment for librarians where the needs of their budgets and institution do not conflict with their Open Science goals. Join Dr Gunther Eysenbach, founder and CEO of JMIR, as he presents this exciting plan to accelerate the move to Open Science. We would be thrilled to present to the FORCE2021 audience, given their interest in disruptive technologies and appreciation of the need for more open and equitable publishing solutions.
On the abundance discrepancy problem in HII regions
Creators: name: Garcia-Rojas, Jorge
name: Esteban, Cesar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The origin of the abundance discrepancy is one of the key problems in the physics of photoionized nebula. In this work, we analize and discuss data for a sample of Galactic and extragalactic HII regions where this abundance discrepancy has been determined. We find that the abundance discrepancy factor (ADF) is fairly constant and of the order of 2 in all the available sample of HII regions. This is a rather different behaviour than that observed in planetary nebulae, where the ADF shows a much wider range of values. We do not find correlations between the ADF and the O/H, O++/H+ ratios, the ionization degree, Te(High), Te(Low)/ Te(High), FWHM, and the effective temperature of the main ionizing stars within the observational uncertainties. These results indicate that whatever mechanism is producing the abundance discrepancy in HII regions it does not substantially depend on those nebular parameters. On the contrary, the ADF seems to be slightly dependent on the excitation energy, a fact that is consistent with the predictions of the classical temperature fluctuations paradigm. Finally, we obtain that Te values obtained from OII recombination lines in HII regions are in agreement with those obtained from collisionally excited line ratios, a behaviour that is again different from that observed in planetary nebulae. These similar temperature determinations are in contradiction with the predictions of the model based on the presence of chemically inhomogeneous clumps but are consistent with the temperature fluctuations paradigm. We conclude that all the indications suggest that the physical mechanism responsible of the abundance discrepancy in HII regions and planetary nebulae are different.
description: 14 pages, 8 figures, 9 tables. Accepted for publication in the ApJ
UOW Crochet Survey Summary Results 2018
Creators: name: Burns, Pippa
Publisher: name: figshare
Year: 2021
Subjects: subject: 111712 Health Promotion
subject: FOS: Health sciences
subject: 111708 Health and Community Services
subject: 111799 Public Health and Health Services not elsewhere classified
subject: 111716 Preventive Medicine

description: This paper provides a summary of the initial data fromour survey investigating how crochet impacts health andwellbeing, and how and why people use online crochetforums.
Sparticle Spectra and LHC Signatures for Large Volume String Compactifications
Creators: name: Conlon, J. P.
name: Kom, C. H.
name: Suruliz, K.
name: Allanach, B. C.
name: Quevedo, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the supersymmetric particle spectra and LHC collider observables for the large-volume string models with a fundamental scale of 10^{11} GeV that arise in moduli-fixed string compactifications with branes and fluxes. The presence of magnetic fluxes on the brane world volume, required for chirality, perturb the soft terms away from those previously computed in the dilute-flux limit. We use the difference in high-scale gauge couplings to estimate the magnitude of this perturbation and study the potential effects of the magnetic fluxes by generating many random spectra with the soft terms perturbed around the dilute flux limit. Even with a 40% variation in the high-scale soft terms the low-energy spectra take a clear and predictive form. The resulting spectra are broadly similar to those arising on the SPS1a slope, but more degenerate. In their minimal version the models predict the ratios of gaugino masses to be M_1 : M_2 : M_3=(1.5 - 2) : 2 : 6, different to both mSUGRA and mirage mediation. Among the scalars, the squarks tend to be lighter and the sleptons heavier than for comparable mSUGRA models. We generate 10 fb^{-1} of sample LHC data for the random spectra in order to study the range of collider phenomenology that can occur. We perform a detailed mass reconstruction on one example large-volume string model spectrum. 100 fb^{-1} of integrated luminosity is sufficient to discriminate the model from mSUGRA and aspects of the sparticle spectrum can be accurately reconstructed.
description: 42 pages, 21 figures. Added references and discussion for section 3. Slight changes in the text
Tectodamaeus Aoki 1984
Creators: name: Xie, Lixia
name: Yang, Maofa
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Damaeidae
Tectodamaeus

description: Genus Tectodamaeus Aoki Tectodamaeus Aoki, 1984: 110–111; Enami and Aoki 1988:33–36 Damaeus (Tectodamaeus) Wang and Cui, 1994: 62–63; Lu and Wang, 1995: 81–82; Lu and Wang, 1995:59–62 Type species: Tectodamaeus armatus Aoki, 1984. Description. Large, dark-colored damaeid mites with long legs. Three pairs of tubercles (Da, Ba and Bp) on prodorsum and 4 paris of tubercles (E2a, E2p, Va and Vp) on ventral side well developed. Propodolateral apophysis (P) always present, Discidium present. Epimeral setation: 3–1–3–4. Leg IV always longer than total body length. Genu IV bearing only 2 setae. Setae d of genu present on legs I-III. Solenidion of tibia has no protecting seta d on legs I-IV. Diagnosis. Tectodamaeus resembles Damaeus Koch, 1836 in general appearance, but can be distinguished from latter by having only 2 setae on genu IV and Setae d of genu present on legs I-III. Distribution. Oriental Region, Palaearctic region.
description: Published as part of Xie, Lixia & Yang, Maofa, 2009, A taxonomic study on the genus Tectodamaeus Aoki (Acari, Oribatida, Damaeidae), with description of two new species from China, pp. 73-82 in ZooKeys 21 (2) on page 74, DOI: 10.3897/zookeys.21.200, http://zenodo.org/record/576528
description: {"references": ["Aoki J (1984) New and unrecorded oribatid mites from Kanagawa, central Japan (I). Bull. Inst. Environ. Sci. Technol., Yokohama Natn. Univ. 11: 110 - 113.", "Enami Y, Aoki J (1988) A new species of the Genus Tectodamaeus (Acari: Damaeidae) from Japan. Acta Arachnol. 37: 33 - 36.", "Wang HF, Cui YQ (1994) Note on the genus Damaeus from South china, with descriptions of five new species (Acari: Oribaeida: Damaeidae). Acta Zootaxon. Sin. 19 (1): 51 - 66."]}
Generalized Einstein-Aether theories and the Solar System
Creators: name: Bonvin, Camille
name: Durrer, Ruth
name: Ferreira, Pedro G.
name: Starkman, Glenn
name: Zlosnik, Tom G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It has been shown that generalized Einstein-Aether theories may lead to significant modifications to the non-relativistic limit of the Einstein equations. In this paper we study the effect of a general class of such theories on the Solar System. We consider corrections to the gravitational potential in negative and positive powers of distance from the source. Using measurements of the perihelion shift of Mercury and time delay of radar signals to Cassini, we place constraints on these corrections. We find that a subclass of generalized Einstein-Aether theories are compatible with these constraints.
description: 16 pages, 1 figure, new appendix A on asymptotic flatness
Smoothed Wigner transforms in the numerical simulation of semiclassical (high-frequency) wave propagation
Creators: name: Athanassoulis, Agissilaos G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65T99, 65M99, 35S10

description: The numerical simulation of wave propagation in semiclassical (high-frequency) problems is well known to pose a formidable challenge. In this work, a new phase-space approach for the numerical simulation of semiclassical wave propagation, making use of the smoothed Wigner Transform (SWT), is proposed. There are numerous works which use the Wigner Transform (WT) in the study of a variety of wave propagation problems including high-frequency limits for linear, nonlinear and/or random waves. The WT however is well known to present significant difficulties in the formulation of numerical schemes. Working with concrete examples for the semiclassical linear Schrodinger equation it is seen that the SWT approach is indeed significantly faster (in a well-defined sense) to work with than the WT and than full numerical solutions of the original equation in the semiclassical regime. Comparisons with exact and numerical solutions are used to keep track of numerical errors.
Lyalpha heating and its impact on early structure formation
Creators: name: Ciardi, Benedetta
name: Salvaterra, Ruben
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we have calculated the effect of Lyalpha photons emitted by the first stars on the evolution of the IGM temperature. We have considered both a standard Salpeter IMF and a delta-function IMF for very massive stars with mass 300 M_sun. We find that the Lyalpha photons produced by the stellar populations considered here are able to heat the IGM at z<25, although never above ~100 K. Stars with a Salpeter IMF are more effective as, due to the contribution from small-mass long-living stars, they produce a higher Lyalpha background. Lyalpha heating can affect the subsequent formation of small mass objects by producing an entropy floor that may limit the amount of gas able to collapse and reduce the gas clumping.We find that the gas fraction in halos of mass below ~ 5 x 10^6 M_sun is less than 50% (for the smallest masses this fraction drops to 1% or less) compared to a case without Lyalpha heating. Finally, Lyalpha photons heat the IGM temperature above the CMB temperature and render the 21cm line from neutral hydrogen visible in emission at z<15.
description: 7 pages, 5 figures, to be printed in MNRAS
Estimation Diversity and Energy Efficiency in Distributed Sensing
Creators: name: Cui, Shuguang
name: Xiao, Jinjun
name: Goldsmith, Andrea
name: Luo, Zhi-Quan
name: Poor, H. Vincent
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Distributed estimation based on measurements from multiple wireless sensors is investigated. It is assumed that a group of sensors observe the same quantity in independent additive observation noises with possibly different variances. The observations are transmitted using amplify-and-forward (analog) transmissions over non-ideal fading wireless channels from the sensors to a fusion center, where they are combined to generate an estimate of the observed quantity. Assuming that the Best Linear Unbiased Estimator (BLUE) is used by the fusion center, the equal-power transmission strategy is first discussed, where the system performance is analyzed by introducing the concept of estimation outage and estimation diversity, and it is shown that there is an achievable diversity gain on the order of the number of sensors. The optimal power allocation strategies are then considered for two cases: minimum distortion under power constraints; and minimum power under distortion constraints. In the first case, it is shown that by turning off bad sensors, i.e., sensors with bad channels and bad observation quality, adaptive power gain can be achieved without sacrificing diversity gain. Here, the adaptive power gain is similar to the array gain achieved in Multiple-Input Single-Output (MISO) multi-antenna systems when channel conditions are known to the transmitter. In the second case, the sum power is minimized under zero-outage estimation distortion constraint, and some related energy efficiency issues in sensor networks are discussed.
description: To appear at IEEE Transactions on Signal Processing
Propagation of external regulation and asynchronous dynamics in random Boolean networks
Creators: name: Mahmoudi, Hamed
name: Pagnani, Andrea
name: Weigt, Martin
name: Zecchina, Riccardo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Boolean Networks and their dynamics are of great interest as abstract modeling schemes in various disciplines, ranging from biology to computer science. Whereas parallel update schemes have been studied extensively in past years, the level of understanding of asynchronous updates schemes is still very poor. In this paper we study the propagation of external information given by regulatory input variables into a random Boolean network. We compute both analytically and numerically the time evolution and the asymptotic behavior of this propagation of external regulation (PER). In particular, this allows us to identify variables which are completely determined by this external information. All those variables in the network which are not directly fixed by PER form a core which contains in particular all non-trivial feedback loops. We design a message-passing approach allowing to characterize the statistical properties of these cores in dependence of the Boolean network and the external condition. At the end we establish a link between PER dynamics and the full random asynchronous dynamics of a Boolean network.
description: 19 pages, 14 figures, to appear in Chaos
Supersymmetric noncommutative solitons
Creators: name: Lechtenfeld, Olaf
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: I consider a supersymmetric Bogomolny-type model in 2+1 dimensions originating from topological string theory. By a gauge fixing this model is reduced to a supersymmetric U(n) chiral model with a Wess-Zumino-Witten-type term in 2+1 dimensions. After a noncommutative extension of the model, I employ the dressing method to construct explicit multi-soliton configurations on noncommutative R^{2,1|2N}.
description: 13 pages, 2 figures; talk given during "Noncommutative Spacetime Geometries" at Alessandria, March 2007, and "Noncommutative Geometry and Physics" at Orsay, April 2007
On the generalized Freedman-Townsend model
Creators: name: Bizdadea, C.
name: Cioroianu, E. M.
name: Negru, I.
name: Saliu, S. O.
name: Sararu, S. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Consistent interactions that can be added to a free, Abelian gauge theory comprising a finite collection of BF models and a finite set of two-form gauge fields (with the Lagrangian action written in first-order form as a sum of Abelian Freedman-Townsend models) are constructed from the deformation of the solution to the master equation based on specific cohomological techniques. Under the hypotheses of smoothness in the coupling constant, locality, Lorentz covariance, and Poincare invariance of the interactions, supplemented with the requirement on the preservation of the number of derivatives on each field with respect to the free theory, we obtain that the deformation procedure modifies the Lagrangian action, the gauge transformations as well as the accompanying algebra. The interacting Lagrangian action contains a generalized version of non-Abelian Freedman-Townsend model. The consistency of interactions to all orders in the coupling constant unfolds certain equations, which are shown to have solutions.
description: LaTeX, 62 pages
Planteamiento de un Estado nación en Noticia de un secuestro (1996)
Creators: name: Aguila, Jesús Miguel Delgado Del
Publisher: name: figshare
Year: 2021
Subjects: Literature

description: Delgado Del Aguila, Jesús Miguel (2018). «Planteamiento de un Estado nación en Noticia de un secuestro (1996)», en: Studium Veritatis. Universidad Católica Sedes Sapientiae. Vol. 16, n.° 22, pp. 167-200. Disponible en https://doi.org/10.35626/sv.22.2018.288
Position paper Erasmus+
Creators: name: VSNU
Publisher: name: Zenodo
Year: 2017
Subjects: Erasmus+

description: Erasmus+ is the European Union's education programme that runs until the end of 2020. The VSNU (Association of Universities in the Netherlands) represents the interests of Dutch universities during the implementation and policy development regarding interim adjustments to the programme. The VSNU also ensures that the Dutch knowledge community can prepare for the new opportunities that this programme offers. The EU wants to achieve greater coherence and modernise itsgrants. Administrative costs are expected to reduce as a result. The aim of the programme is to boost student mobility and promote collaboration between institutions and the business sector. The Erasmus+ budget is €14 billion total for the period 2014-2020. That is nearly one and a half times the budget of the previous long term education programme.
Analysis of coherence in turbulent stratified wakes using spectral proper orthogonal decomposition
Creators: name: Nidhan, Sheel
name: Schmidt, Oliver T.
name: Sarkar, Sutanu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We use spectral proper orthogonal decomposition (SPOD) to extract and analyze coherent structures in the turbulent wake of a disk at Reynolds number $Re = 5 \times 10^{4}$ and Froude numbers $Fr$ = $2, 10$. We find that the SPOD eigenspectra of both wakes exhibit a low-rank behavior and the relative contribution of low-rank modes to total fluctuation energy increases with $x/D$. The vortex shedding (VS) mechanism, which corresponds to $St \approx 0.11-0.13$ in both wakes, is active and dominant throughout the domain in both wakes. The continual downstream decay of the SPOD eigenspectrum peak at the VS mode, which is a prominent feature of the unstratified wake, is inhibited by buoyancy, particularly for $Fr = 2$. The energy at and near the VS frequency is found to appear in the outer region of the wake when the downstream distance exceeds $Nt = Nx/U = 6 - 8$. Visualizations show that unsteady internal gravity waves (IGWs) emerge at the same $Nt = 6 - 8$. A causal link between the VS mechanism and the unsteady IGW generation is also established using the SPOD-based reconstruction and analysis of the pressure-transport term. These IGWs are also picked up in SPOD analysis as a structural change in the shape of the leading SPOD eigenmode. The $Fr = 2$ wake shows layering in the wake core at {$Nt > 15$} which is captured by the leading SPOD eigenmodes of the VS frequency at downstream locations $x/D > 30$. The VS mode of the $Fr = 2$ wake is streamwise-coherent, consisting of V-shaped structures at $x/D \gtrsim 30$. Overall, we find that the coherence of wakes, initiated by the VS mode at the body, is prolonged by buoyancy to far downstream. Also, this coherence is spatially modified by buoyancy into horizontal layers and IGWs. Low-order truncations of SPOD modes are shown to efficiently reconstruct important second-order statistics.
description: 30 pages, 20 figures, accepted in Journal of Fluid Mechanics
Segmentation of EM showers for neutrino experiments with deep graph neural networks
Creators: name: Belavin, Vladislav
name: Trofimova, Ekaterina
name: Ustyuzhanin, Andrey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We introduce a first-ever algorithm for the reconstruction of multiple showers from the data collected with electromagnetic (EM) sampling calorimeters. Such detectors are widely used in High Energy Physics to measure the energy and kinematics of in-going particles. In this work, we consider the case when many electrons pass through an Emulsion Cloud Chamber (ECC) brick, initiating electron-induced electromagnetic showers, which can be the case with long exposure times or large input particle flux. For example, SHiP experiment is planning to use emulsion detectors for dark matter search and neutrino physics investigation. The expected full flux of SHiP experiment is about 10^20 particles over five years. To reduce the cost of the experiment associated with the replacement of the ECC brick and off-line data taking (emulsion scanning), it is decided to increase exposure time. Thus, we expect to observe a lot of overlapping showers, which turn EM showers reconstruction into a challenging point cloud segmentation problem. Our reconstruction pipeline consists of a Graph Neural Network that predicts an adjacency matrix and a clustering algorithm. We propose a new layer type (EmulsionConv) that takes into account geometrical properties of shower development in ECC brick. For the clustering of overlapping showers, we use a modified hierarchical density-based clustering algorithm. Our method does not use any prior information about the incoming particles and identifies up to 87% of electromagnetic showers in emulsion detectors. The main test bench for the algorithm for reconstructing electromagnetic showers is going to be SND@LHC.
description: 29 pages, 27 figures
From cluster to solid - the variational cluster approximation applied to NiO
Creators: name: Eder, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The variational cluster approximation is applied to the calculation of the single particle spectral function of NiO. Trial self energies and the numerical value of the Luttinger-Ward functional are obtained by exact diagonalization of NiO6-clusters and the single particle parameters of the clusters serve as variational parameters to obtain a stationary point of the grand potential of the lattice system. Good agreement with experiment is obtained.
description: Revtex, 4 pages, 2 eps-figures
Isovector EMC effect from global QCD analysis with MARATHON data
Creators: name: Cocuzza, C.
name: Keppel, C. E.
name: Liu, H.
name: Melnitchouk, W.
name: Metz, A.
name: Sato, N.
name: Thomas, A. W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We report the results of a Monte Carlo global QCD analysis of unpolarized parton distribution functions (PDFs), including for the first time constraints from ratios of $^3$He to $^3$H structure functions recently obtained by the MARATHON experiment at Jefferson Lab. Our simultaneous analysis of nucleon PDFs and nuclear effects in $A=2$ and $A=3$ nuclei reveals the first indication for an isovector nuclear EMC effect in light nuclei. We find that while the MARATHON data yield relatively weak constraints on the $F_2^n/F_2^p$ neutron to proton structure function ratio and on the $d/u$ PDF ratio, they suggest an enhanced nuclear effect on the $d$-quark PDF in the bound proton, questioning the assumptions commonly made in nuclear PDF analyses.
description: 6 pages, 3 figures
Towards Personalized In-Home Self-Management and intervention for patients with Chronic Diseases.
Creators: name: Teriús-Padrón, José G.
name: García-Betances, Rebeca I.
name: Cabrera-Umpiérrez, María F.
name: Arredondo-Waldmeyer, María Teresa
Publisher: name: Zenodo
Year: 2018

description: We present a novel self-management model for patients with chronic diseases based on personalized interventions using state of the art technologies for physiological, behavioral and environmental monitoring.
Voids in the Local Volume: a limit on appearance of a galaxy in a DM halo
Creators: name: Tikhonov, Anton V.
name: Klypin, Anatoly A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Current explanation of the overabundance of dark matter subhalos in the Local Group (LG) indicates that there maybe a limit on mass of a halo, which can host a galaxy. This idea can be tested using voids in the distribution of galaxies: at some level small voids should not contain any (even dwarf) galaxies. We use observational samples complete to M_B = -12 with distances less than 8 Mpc to construct the void function (VF): the distribution of sizes of voids empty of any galaxies. There are ~30 voids with sizes ranging from 1 to 5 Mpc. We then study the distribution of dark matter halos in very high resolution simulations of the LCDM model. The theoretical VF matches the observations remarkably well only if we use halos with circular velocities larger than 45 +/- 10 km/s. This agrees with the Local Group predictions. There are smaller halos in the voids, but they should not produce any luminous matter. Small voids look quite similar to their giant cousins: the density has a minimum at the center of a void and it increases as we get closer to the border. Small nonluminous halos inside the void form a web of tiny filaments. Thus, both the Local Group data and the nearby voids indicate that isolated halos below 45 +/- 10 km/s must not host galaxies and that small (few Mpc) voids are truly dark.
description: 5 pages, 1 figure
Estudios críticos de Noticia de un secuestro (1996): fundamentos sobre la novela como alegoría, género e interpretación literaria
Creators: name: Aguila, Jesús Miguel Delgado Del
Publisher: name: figshare
Year: 2021
Subjects: Literature

description: Delgado Del Aguila, Jesús Miguel (2019). «Estudios críticos de Noticia de un secuestro (1996): fundamentos sobre la novela como alegoría, género e interpretación literaria», en: (Pensamiento), (palabra) y obra. Revista indexada en SciELO. Universidad Pedagógica Nacional, Colombia. N.° 21, enero-julio, pp. 26-41. Disponible en http://revistas.pedagogica.edu.co/index.php/revistafba/article/view/9471