cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Local Wisdom Based Problem-Posing (LWPP) and It’s Influence on Students’ Motivation and Learning Outcomes
Creators: name: Kuncoro, Tri
name: Wena, Made
Publisher: name: SAR Journal
Year: 2019

description: The purpose of this research is to examine the study results of a novel problem-posing improvement in mechanics of materials. The new technique is called local wisdom based problem posing (LWPP). In addition, it aims at scrutinizing the results of study between groups of students who have high motivation and low motivations. Moreover, it also observe the interaction of the study approach and students’ motivation towards the results of study. For the purpose of this research, experiment methods were employed. An analysis of variance (ANOVA) two way was used to test the hypothesis. This research is a method to test the difference mean value between A and B. The results show that there are significant differences in learning outcomes between problem-posing group and the conventional group. There are also significant differences in learning outcomes between groups of students with high motivation to the low ones. This results shows that students’ motivation plays an important role in determining treatment of learning model and learning out-comes. Moreover, there is no interaction between the learning models with the students’ motivation towards the results of the study.
title: One Solution of Component Based Development in NodeJS for Modularization of gRPC Services and Rapid Prototyping
Creators: name: Vasiljević, Mihailo
name: Manasijević, Aleksandar
name: Kupusinac, Aleksandar
name: Sukić, Ćamil
name: Ivetić, Dragan
Publisher: name: SAR Journal
Year: 2019

description: Developing software system as a composition of components that are independently created, provided and installed can significantly improve the value of software solution. In this paper we offer one possible solution for creating gRPC services, using NodeJS, as independent modules, components. We showed all main structures and
sketched all main components.
Lepton Flavor and Number Conservation, and Physics Beyond the Standard Model
Creators: name: de Gouvea, Andre
name: Vogel, Petr
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The physics responsible for neutrino masses and lepton mixing remains unknown. More experimental data are needed to constrain and guide possible generalizations of the standard model of particle physics, and reveal the mechanism behind nonzero neutrino masses. Here, the physics associated with searches for the violation of lepton-flavor conservation in charged-lepton processes and the violation of lepton-number conservation in nuclear physics processes is summarized. In the first part, several aspects of charged-lepton flavor violation are discussed, especially its sensitivity to new particles and interactions beyond the standard model of particle physics. The discussion concentrates mostly on rare processes involving muons and electrons. In the second part, the status of the conservation of total lepton number is discussed. The discussion here concentrates on current and future probes of this apparent law of Nature via searches for neutrinoless double beta decay, which is also the most sensitive probe of the potential Majorana nature of neutrinos.
description: Contribution to the special volume "Fundamental Symmetries in the Era of LHC" of Progress in Particle and Nuclear Physics, references updated
Inferring evolutionary histories of pathway regulation from transcriptional profiling data
Creators: name: Schraiber, Joshua G.
name: Mostovoy, Yulia
name: Hsu, Tiffany Y.
name: Brem, Rachel B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Genomics (q-bio.GN)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: One of the outstanding challenges in comparative genomics is to interpret the evolutionary importance of regulatory variation between species. Rigorous molecular evolution-based methods to infer evidence for natural selection from expression data are at a premium in the field, and to date, phylogenetic approaches have not been well-suited to address the question in the small sets of taxa profiled in standard surveys of gene expression. We have developed a strategy to infer evolutionary histories from expression profiles by analyzing suites of genes of common function. In a manner conceptually similar to molecular evolution models in which the evolutionary rates of DNA sequence at multiple loci follow a gamma distribution, we modeled expression of the genes of an \emph{a priori}-defined pathway with rates drawn from an inverse gamma distribution. We then developed a fitting strategy to infer the parameters of this distribution from expression measurements, and to identify gene groups whose expression patterns were consistent with evolutionary constraint or rapid evolution in particular species. Simulations confirmed the power and accuracy of our inference method. As an experimental testbed for our approach, we generated and analyzed transcriptional profiles of four \emph{Saccharomyces} yeasts. The results revealed pathways with signatures of constrained and accelerated regulatory evolution in individual yeasts and across the phylogeny, highlighting the prevalence of pathway-level expression change during the divergence of yeast species. We anticipate that our pathway-based phylogenetic approach will be of broad utility in the search to understand the evolutionary relevance of regulatory change.
description: 30 pages, 12 figures, 2 tables, contact authors for supplementary tables
The Case Study of Forest Bioenergy as a Method for Selecting the Best Forecasting Model
Creators: name: Tsatiris, Michael
Publisher: name: Zenodo
Year: 2021
Subjects: Evaluation of models
choice of the best model
statistical criteria

description: The purpose of this article is to investigate technique for finding the best model for estimating wood fuel need in Greece for the years 2020, 2025, and 2030, with the aim of making forest bioenergy decisions. A complete time series of historical data exists that concerns a) the consumption of fuelwood and b) the six most important from the independent variables that could influence the consumption of fuelwood, which data cover the time period 1989-2010. The evaluation and choice of the best model was realized with the help of the following six statistical criteria: a) the size of standard error of theoretical values of dependant variable, S.E., b) the value of adjusted R square, , c) the non-existence of autocorrelation among the residuals (εi) through the criterion Durbin-Watson, d) the statistical significance of models coefficients through t criterion, e) the statistical significance of models through F criterion and f) the non-existence of multicolinearity through the values of Variance Inflation Factor. The price of fuelwood influences negatively the consumption of fuelwood, namely as the price of fuelwood increases the consumption of fuelwood decreases. The price of heating oil influences positively the consumption of fuelwood, namely as the price of heating oil increases the consumption of fuelwood increases.
Beating the standard quantum limit for force sensing with a coupled two-mode optomechanical system
Creators: name: Xu, Xunnong
name: Taylor, Jacob M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optomechanics allows the transduction of weak forces to optical fields, with many efforts approaching the standard quantum limit. We consider force-sensing using a mirror-in-the-middle setup and use two coupled cavity modes originated from normal mode splitting for separating pump and probe fields. We find that this two-mode model can be reduced to an effective single-mode model, if we drive the pump mode strongly and detect the signal from the weak probe mode. The optimal force detection sensitivity at zero frequency (DC) is calculated and we show that one can beat the standard quantum limit by driving the cavity close to instability. The best sensitivity achievable is limited by mechanical thermal noise and by optical losses. We also find that the bandwidth where optimal sensitivity is maintained is proportional to the cavity damping in the resolved sideband regime. Finally, the squeezing spectrum of the output signal is calculated, and it shows almost perfect squeezing at DC is possible by using a high quality factor and low thermal phonon-number mechanical oscillator.
description: 5 pages, 2 figures
A study of the effect of boundary layer control on an axial flow compressor stage
Creators: name: Mertz, Charles
Publisher: name: California Institute of Technology
Year: 1954
Subjects: Aeronautics

description: The problem of increasing the pressure ratio per stage of an axial flow compressor is studied in part by considering the effect of boundary layer control by area suction on the three dimensional turbulent boundary layer flow on the casing in one stage of a compressor.

The effect of this boundary layer control, on the prevention of separation is investigated. Crossflow and crosswise variation of crossflow in the boundary layer are factors contributing to the tendency toward separation and the effect of boundary layer control on this phenomenon is determined. This analysis is limited to the boundary layer on the casing and does not take into consideration the possible separation taking place at the blades.

The boundary layer equations are used to obtain the momentum integral equations with suction applied at the surface. The method of small perturbations is applied to the equations in order to simplify them so that a solution may be reached with relatively little effort. Expressions are assumed for the boundary layer profiles, flow path outside the boundary layer, and shear stresses. These are in a form which closely resembles the actual conditions.

In order to show what effect boundary layer control exerts, a simplified single stage compressor is studied. The results show that crossflow can be reduced by applying suction to the boundary layer with a resultant decreased tendency toward separation of the flow, but this is reached only after a certain minimum suction velocity is attained, If the suction velocity is less than this minimum, in spite of the decrease in boundary layer thickness the crossflow will be increased over that of a solid wall and likewise the tendency toward separation will increase.
Robust error correction for real-valued signals via message-passing decoding and spatial coupling
Creators: name: Barbier, Jean
name: Krzakala, Florent
name: Zdeborová, Lenka
name: Zhang, Pan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We revisit the error correction scheme of real-valued signals when the codeword is corrupted by gross errors on a fraction of entries and a small noise on all the entries. Combining the recent developments of approximate message passing and the spatially-coupled measurement matrix in compressed sensing we show that the error correction and its robustness towards noise can be enhanced considerably. We discuss the performance in the large signal limit using previous results on state evolution, as well as for finite size signals through numerical simulations. Even for relatively small sizes, the approach proposed here outperforms convex-relaxation-based decoders.
description: 5 pages, 5 figures, IEEE Information Theory Workshop, Seville, September 9-13, 2013
Gravity Asymptotics with Topological Parameters
Creators: name: Sengupta, Sandipan
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In four dimensional gravity theory, the Barbero-Immirzi parameter has a topological origin, and can be identified as the coefficient multiplying the Nieh-Yan topological density in the gravity Lagrangian, as proposed by Date et al.[1]. Based on this fact, a first order action formulation for spacetimes with boundaries is introduced. The bulk Lagrangian, containing the Nieh-Yan density, needs to be supplemented with suitable boundary terms so that it leads to a well-defined variational principle. Within this general framework, we analyse spacetimes with and without a cosmological constant. For locally Anti de Sitter (or de Sitter) asymptotia, the action principle has non-trivial implications. It admits an extremum for all such solutions provided the SO(3,1) Pontryagin and Euler topological densities are added to it with fixed coefficients. The resulting Lagrangian, while containing all three topological densities, has only one independent topological coupling constant, namely, the Barbero-Immirzi parameter. In the final analysis, it emerges as a coefficient of the SO(3,2) (or SO(4,1)) Pontryagin density, and is present in the action only for manifolds for which the corresponding topological index is non-zero.
description: References added; Published version
The coast range batholith between Haines, Alaska and Bennett Lake, British Columbia
Creators: name: Barker, Fred
Publisher: name: California Institute of Technology
Year: 1952
Subjects: subject: quartz monzonite
subject: Kluane Lake
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Coast Range batholith
subject: quartz diorite
subject: Skagway Valley
subject: Bennett Lake
subject: Lynn Canal
subject: White Pass

description: The Coast Range batholith of western Canada and southeastern Alaska, which is a composite of many plutons from a few hundred yards to several miles in cross-sectional width, extends approximately 1,100 miles from the vicinity of Vancouver, British Columbia northwest to Kluane Lake, Yukon Territory. Its width varies from about 40 miles
in the north to a maximum of about 120 miles in southern British Columbia. The northern end of the batholith bas not been studied previously in detail. The author traversed this portion of the of the batholith from the northeastern contact at Bennett Lake, British Columbia along the tracks
of the White Pass and Yukon Route railroad to Skagway, Alaska and from there by boat along Lynn Canal to Haines, Alaska and the southwestern contact of the batholith. The mapping was done on air photos, whose scale is approximately 1:38,000. The traverse was begun on August 4,
1951 and was finished on August 30, 1951. About four weeks were spent studying thin sections in March and April of 1952. The purpose of this report is to present the results
of this study.
Higgs Boson Mass, Proton Decay, Naturalness and Constraints of LHC and Planck Data
Creators: name: Liu, Mengxi
name: Nath, Pran
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A Higgs boson mass $\sim 126$ GeV as determined by the LHC data requires a large loop correction which in turn implies a large sfermion mass. Implication of this result for the stability of the proton in supersymmetric grand unified theories is examined including other experiments constraints along with the most recent result on cold dark matter from Planck. It is shown that over the allowed parameter space of supergravity unified models, proton lifetime is highly sensitive to the Higgs boson mass and a few GeV shift in its mass can change the proton decay lifetime for the mode $p\to \bar νK^+$ by as much as two orders of magnitude or more. An analysis is also given on the nature of radiative breaking of the electroweak symmetry in view of the high Higgs boson, and it is shown that most of the parameter space of universal and non-universal supergravity unified models lies on the Hyperbolic Branch of radiative breaking of the electroweak symmetry, while the Ellipsoidal Branch and the Focal Point regions are highly depleted and contain only a very small region of the allowed parameter space. Also discussed are the naturalness criteria when the proton stability constraints along with the electroweak symmetry breaking are considered together. It is shown that under the assumed naturalness criteria the overall fine tuning is improved for larger values of the scalar mass with the inclusion of the proton stability constraint. Thus the naturalness criteria including proton stability along with electroweak symmetry breaking constraints tend to favor the weak scale of SUSY in the several TeV region. Implications for the discovery of supersymmetry in view of the high Higgs mass are briefly discussed.
description: 17 pages, 9 figures
Wave Function of the Roper from Lattice QCD
Creators: name: Roberts, Dale S.
name: Kamleh, Waseem
name: Leinweber, Derek B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We apply the eigenvectors from a variational analysis in lattice QCD to successfully extract the wave function of the Roper state, and a higher mass P_11 state of the nucleon. We use the 2+1 flavour 32^3x64 PACS-CS configurations at a near physical pion mass of 156 MeV. We find that both states exhibit a structure consistent with a constituent quark model. The Roper d-quark wave function contains a single node consistent with a 2S state, and the third state wave function contains two, consistent with a 3S state. A detailed comparison with constituent quark model wave functions is carried out, obtained from a Coulomb plus ramp potential. These results validate the approach of accessing these states by constructing a variational basis composed of different levels of fermion source and sink smearing. Furthermore, significant finite volume effects are apparent for these excited states which mix with multi-particle states, driving their masses away from physical values and enabling the extraction of resonance parameters from lattice QCD simulations.
description: 7 pages, 9 figures
An Eigenvalue Problem for a Fermi System and Lie Algebras
Creators: name: Steeb, Willi-Hans
name: Hardy, Yorick
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study a Fermi Hamilton operator $\hat K$ which does not commute with the number operator $\hat N$. The eigenvalue problem and the Schrödinger equation is solved. Entanglement is also discussed. Furthermore the Lie algebra generated by the two terms of the Hamilton operator is derived and the Lie algebra generated by the Hamilton operator and the number operator is also classified.
description: typos corrected, minor corrections, 4 references added
Independent Vector Analysis: Identification Conditions and Performance Bounds
Creators: name: Anderson, Matthew
name: Fu, Geng-Shen
name: Phlypo, Ronald
name: Adalı, Tülay
Publisher: name: arXiv
Year: 2013
Subjects: subject: Machine Learning (cs.LG)
subject: Information Theory (cs.IT)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Recently, an extension of independent component analysis (ICA) from one to multiple datasets, termed independent vector analysis (IVA), has been the subject of significant research interest. IVA has also been shown to be a generalization of Hotelling's canonical correlation analysis. In this paper, we provide the identification conditions for a general IVA formulation, which accounts for linear, nonlinear, and sample-to-sample dependencies. The identification conditions are a generalization of previous results for ICA and for IVA when samples are independently and identically distributed. Furthermore, a principal aim of IVA is the identification of dependent sources between datasets. Thus, we provide the additional conditions for when the arbitrary ordering of the sources within each dataset is common. Performance bounds in terms of the Cramer-Rao lower bound are also provided for the demixing matrices and interference to source ratio. The performance of two IVA algorithms are compared to the theoretical bounds.
description: 14 pages, 5 figures, in review for IEEE Trans. on Signal Processing
Structure Finding in Cosmological Simulations: The State of Affairs
Creators: name: Knebe, Alexander
name: Pearce, Frazer R.
name: Lux, Hanni
name: Ascasibar, Yago
name: Behroozi, Peter
name: Casado, Javier
name: Moran, Christine Corbett
name: Diemand, Juerg
name: Dolag, Klaus
name: Dominguez-Tenreiro, Rosa
name: Elahi, Pascal
name: Falck, Bridget
name: Gottloeber, Stefan
name: Han, Jiaxin
name: Klypin, Anatoly
name: Lukic, Zarija
name: Maciejewski, Michal
name: McBride, Cameron K.
name: Merchan, Manuel E.
name: Muldrew, Stuart I.
name: Neyrinck, Mark
name: Onions, Julian
name: Planelles, Susana
name: Potter, Doug
name: Quilis, Vicent
name: Rasera, Yann
name: Ricker, Paul M.
name: Roy, Fabrice
name: Ruiz, Andres N.
name: Sgro, Mario A.
name: Springel, Volker
name: Stadel, Joachim
name: Sutter, P. M.
name: Tweed, Dylan
name: Zemp, Marcel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The ever increasing size and complexity of data coming from simulations of cosmic structure formation demands equally sophisticated tools for their analysis. During the past decade, the art of object finding in these simulations has hence developed into an important discipline itself. A multitude of codes based upon a huge variety of methods and techniques have been spawned yet the question remained as to whether or not they will provide the same (physical) information about the structures of interest. Here we summarize and extent previous work of the "halo finder comparison project": we investigate in detail the (possible) origin of any deviations across finders. To this extent we decipher and discuss differences in halo finding methods, clearly separating them from the disparity in definitions of halo properties. We observe that different codes not only find different numbers of objects leading to a scatter of up to 20 per cent in the halo mass and Vmax function, but also that the particulars of those objects that are identified by all finders differ. The strength of the variation, however, depends on the property studied, e.g. the scatter in position, bulk velocity, mass, and the peak value of the rotation curve is practically below a few per cent, whereas derived quantities such as spin and shape show larger deviations. Our study indicates that the prime contribution to differences in halo properties across codes stems from the distinct particle collection methods and -- to a minor extent -- the particular aspects of how the procedure for removing unbound particles is implemented. We close with a discussion of the relevance and implications of the scatter across different codes for other fields such as semi-analytical galaxy formation models, gravitational lensing, and observables in general.
description: 28 pages containing 13 figures & 4 tables + 9 pages appendix containing another 4 tables + 4 pages of references, accepted for publication in MNRAS
Dense Baryonic Matter in Hidden Local Symmetry Approach: Half-Skyrmions and Nucleon Mass
Creators: name: Ma, Yong-Liang
name: Harada, Masayasu
name: Lee, Hyun Kyu
name: Oh, Yongseok
name: Park, Byung-Yoon
name: Rho, Mannque
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Hadron properties in dense medium are treated in a unified way in a skyrmion model constructed with an effective Lagrangian, in which the rho and omega vector mesons are introduced as hidden gauge bosons, valid up to O(p^4) terms in chiral expansion including the homogeneous Wess-Zumino terms. All the low energy constants - apart from f_pi and m_rho - are fixed by the master formula derived from the relation between 5-D hQCD and 4-D HLS. This allows one to pin down the density n_1/2 at which the skyrmions in medium fractionize into half-skyrmions, bringing in a drastic change in the EoS of dense matter. We find that the U(1) field that figures in the CS term in the hQCD action or equivalently the omega field in the hWZ term in the dimensionally reduced HLS action plays a crucial role in the half-skyrmion phase. The importance of the omega degree of freedom may be connected to what happens in the instanton structure of elementary baryon noticed in hQCD. The most striking and intriguing in what is found in the model is that f_pi that smoothly drops with increasing density in the skyrmion phase stops decreasing at n_1/2 and remains nearly constant in the half-skyrmion phase. In accordance with the large N_c consideration, the baryon mass also stays non-scaling in the half-skyrmion phase. This feature which is reminiscent of the parity-doublet baryon model with a chirally invariant mass m_0 is supported by the nuclear EFT with the parameters of the Lagrangian scaling modified at the skyrmion-half-skyrmion phase transition. It also matches with one-loop RG analysis based on HLS. A link between a non-vanishing m_0 and the origin of nucleon mass distinctive from dynamically generated mass is suggested. We briefly discuss the possible consequences of the topology change found in this paper on the forthcoming experiments at the RIB machines under construction.
description: REVTeX, 13 pages, 6 figures, to be published in Phys. Rev. D
Solving the Schrödinger eigenvalue problem by the imaginary time propagation technique using splitting methods with complex coefficients
Creators: name: Bader, Philipp
name: Blanes, Sergio
name: Casas, Fernando
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65N25

description: The Schrödinger eigenvalue problem is solved with the imaginary time propagation technique. The separability of the Hamiltonian makes the problem suitable for the application of splitting methods. High order fractional time steps of order greater than two necessarily have negative steps and can not be used for this class of diffusive problems. However, there exist methods which use fractional complex time steps with positive real parts which can be used with only a moderate increase in the computational cost. We analyze the performance of this class of schemes and propose new methods which outperform the existing ones in most cases. On the other hand, if the gradient of the potential is available, methods up to fourth order with real and positive coefficients exist. We also explore this case and propose new methods as well as sixth-order methods with complex coefficients. In particular, highly optimized sixth-order schemes for near integrable systems using positive real part complex coefficients with and without modified potentials are presented. A time-stepping variable order algorithm is proposed and numerical results show the enhanced efficiency of the new methods.
description: 12 pages of RevTex4-1, as submitted to journal, revised version
Study on Planning Sustainable Partnerships for Entrepreneurial Ventures in Professional Service Firms (PSFs)
Creators: name: Rady, Alaa
name: Sanz, Luis J.
Publisher: name: Zenodo
Year: 2021
Subjects: Professional Service Firms (PSFs)
entrepreneurial ventures
planning sustainable partnerships

description: This paper begins with a comprehensive analysis of the literature on entrepreneurship, covering everything from how to describe it to its macroeconomic effect and the various stages of entrepreneurial start-ups. The literature delves deeper into the resources required to make such enterprises successful, as well as the many agency issues that may emerge between the entrepreneur and other financial backers. The article is based on two examples of new ventures in professional service companies (PSFs), and it evaluates the interaction patterns between the entrepreneur and other financial investors, describing potential challenges that may arise in real life, and how to overcome them. One of the case studies had the good fortune of successfully resolving such a relationship, resulting in the satisfaction of all stakeholders and the development of a long-term entrepreneurial venture, while the other case study ran into similar issues, ultimately leading to bankruptcy. Keywords: entrepreneurship, entrepreneur, case studies, professional service firms, sweat equity, shadow equity, resources, conflict of interest, financial investors, MENA región.
Conspiratorial cosmology - the case against the Universe
Creators: name: Rachen, Jörg P.
name: Gahlings, Ute G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Based on the cosmological results of the Planck Mission, we show that all parameters describing our Universe within the ΛCDM model can be constructed from a small set of numbers known from conspiracy theory. Our finding is confirmed by recent data from high energy particle physics. This clearly demonstrates that our Universe is a plot initiated by an unknown interest group or lodge. We analyse possible scenarios for this conspiracy, and conclude that the belief in the existence of our Universe is an illusion, as previously assumed by ancient philosophers, 20th century science fiction authors and contemporary film makers.
description: 4 pages
Coherent and incoherent processes responsible for various characteristics of nonlinear magneto-optical signals in rubidium atoms
Creators: name: Auzinsh, Marcis
name: Berzins, Andris
name: Ferber, Ruvin
name: Gahbauer, Florian
name: Kalvans, Linards
name: Mozers, Arturs
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present the results of an investigation of the different physical processes that influence the shape of the nonlinear magneto-optical signals both at small magnetic field values (~ 100 mG) and at large magnetic field values (several tens of Gauss). We used a theoretical model that provided an accurate description of experimental signals for a wide range of experimental parameters. By turning various effects "on" or "off" inside this model, we investigated the origin of different features of the measured signals. We confirmed that the narrowest structures, with widths on the order of 100 mG, are related mostly to coherences among ground-state magnetic sublevels. The shape of the curves at other scales could be explained by taking into account the different velocity groups of atoms that come into and out of resonance with the exciting laser field. Coherent effects in the excited state can also play a role, although they mostly affect the polarization components of the fluorescence. The results of theoretical calculations are compared with experimental measurements of laser induced fluorescence from the D2 line of atomic rubidium as a function of magnetic field.
description: 8 pages, 6 figures
Supplementary Material for "Identifying genetic determinants of inflammatory pain in mice using a large-scale gene-targeted screen"
Creators: name: Wotton, J.M
name: White, J.K
Publisher: name: Zenodo
Year: 2021
Subjects: Pain, nociception, nocifensive behavior, sensitization, formalin, Hargreaves, von Frey, complete Freund's adjuvant, single-gene knockout mouse, screen, IMPC, comorbidity, autism

description: The directory contains a readme file as an index for files in the subfolders which include, GeneWeaver database search results, raw data and Rdata outputs and Open Field MP terms
Optimization of covalent immobilization of Trichoderma reesei cellulase onto modified ReliZyme HA403 and Sepabeads EC-EP supports for cellulose hydrolysis, in buffer and ionic liquids/buffer media
Creators: name: Bilgin, Ramazan
name: Yalcin, M. Serkan
name: Yildirim, Deniz
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Plant Biology

description: The covalent immobilization of Trichoderma reesei cellulase onto modified ReliZyme HA403 and Sepabeads EC-EP supports were carried out. The optimal immobilization conditions were determined using response surface methodology. The hydrolysis of cellulose using the free and immobilized cellulase preparations in ionic liquids (IL) using cosolvents was investigated. The hydrolytic activities in buffer medium containing 25% (v/v) of 1-butyl-3-methylimidazolium hexafluorophosphate were around 2.6-, 1.6-, and 5.5-fold higher than the activities in buffer medium. The retained initial activities were 32% and 57%, respectively for cellulase preparations immobilized onto Sepabeads EC-EP support and onto modified ReliZyme HA403 support after 5 reuses.
On the B*' --> B transition
Creators: name: Blossier, Benoît
name: Bulava, John
name: Donnellan, Michael
name: Gérardin, Antoine
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present a first Nf=2 lattice estimate of the hadronic coupling g_12 which parametrises the strong decay of a radially excited B* meson into the ground state B meson at zero recoil. We work in the static limit of Heavy Quark Effective Theory (HQET) and solve a Generalised Eigenvalue Problem (GEVP), which is necessary for the extraction of excited state properties. After an extrapolation to the continuum limit and a check of the pion mass dependence, we obtain g_12 = -0.17(4).
description: 13 pages, 8 figures, published version
1,2,3-Conjecture and 1,2-Conjecture for Sparse Graphs
Creators: name: Cranston, Daniel W.
name: Jahanbekam, Sogol
name: West, Douglas B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We apply the Discharging Method to prove the 1,2,3-Conjecture and the 1,2-Conjecture for graphs with maximum average degree less than 8/3. Stronger results on these conjectures have been proved, but this is the first application of discharging to them, and the structure theorems and reducibility results are of independent interest.
description: 29 pages, 19 figures; same results as earlier version, but revised introduction
Point-Spread-Function Engineering in MINFLUX: Optimality of Donut and Half-Moon Excitation Patterns
Creators: name: Liu, Yan
name: Dong, Jonathan
name: Maya, Juan Augusto
name: Balzarotti, Francisco
name: Unser, Michael
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Localization microscopy enables imaging with resolutions that surpass the conventional optical diffraction limit. Notably, the MINFLUX method achieves super-resolution by shaping the excitation point-spread function (PSF) to minimize the required photon flux for a given precision. Various beam shapes have recently been proposed to improve localization efficiency, yet their optimality remains an open question. In this work, we deploy a numerical and theoretical framework to determine optimal excitation patterns for MINFLUX. Such a computational approach allows us to search for new beam patterns in a fast and low-cost fashion, and to avoid time-consuming and expensive experimental explorations. We show that the conventional donut beam is a robust optimum when the excitation beams are all constrained to the same shape. Further, our PSF engineering framework yields two pairs of half-moon beams (orthogonal to each other) which can improve the theoretical localization precision by a factor of about two.
Constraints on the shape of the Milky Way dark matter halo from the Sagittarius stream
Creators: name: Vera-Ciro, Carlos
name: Helmi, Amina
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We propose a new model for the dark matter halo of the Milky Way that fits the properties of the stellar stream associated with the Sagittarius dwarf galaxy. Our dark halo is oblate with q_z = 0.9 for r < 10 kpc, and can be made to follow the Law & Majewski model at larger radii. However, we find that the dynamical perturbations induced by the Large Magellanic Cloud on the orbit of Sgr cannot be neglected when modeling its streams. When taken into account, this leads us to constrain the Galaxy's outer halo shape to have minor-to-major axis ratio (c/a)_Φ= 0.8 and intermediate-to-major axis ratio (b/a)_Φ= 0.9, in good agreement with cosmological expectations.
description: 5 pages, 5 figures. Accepted for publication in ApJ Letters. Minor changes to match published version
An invertebrate fauna from the "Modelo" of Dry Canyon, Los Angeles County, California
Creators: name: Buffington, Edwin Conger
Publisher: name: California Institute of Technology
Year: 1947
Subjects: subject: Mint Canyon Formation
subject: Bouquet Canyon
subject: Saugus Formation
subject: Modelo Formation
subject: Dry Canyon
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Haskell Canyon

description: The age of the Mint Canyon formation and it's stratigraphic relationships with the marine "Modelo" formation immediately overlying it have caused much discussion in recent years. Age determinations resulting from studies of vertebrate faunas collected from the Mint Canyon and invertebrate faunas collected from the "Modelo" differ considerably. The value of the equid genus Hipparion, as an index to the lower Pliocene, has been questioned.

An investigation, the results of which are embodied in this paper, included the collection of an invertebrate fauna from the "Modelo", the measurement of a detailed columnar section, and a comparison and evaluation of the fossils found. Three new species are described and 26 others are recorded.

A lower Neroly age (uppermost Miocene) is assigned to the "Modelo."
Femtoscopic scales in $p+p$ and $p+$Pb collisions in view of the uncertainty principle
Creators: name: Shapoval, V. M.
name: Braun-Munzinger, P.
name: Karpenko, Iu. A.
name: Sinyukov, Yu. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A method for quantum corrections of Hanbury-Brown/Twiss (HBT) interferometric radii produced by semi-classical event generators is proposed. These corrections account for the basic indistinguishability and mutual coherence of closely located emitters caused by the uncertainty principle. A detailed analysis is presented for pion interferometry in $p+p$ collisions at LHC energy ($\sqrt{s}=7$ TeV). A prediction is also presented of pion interferometric radii for $p+$Pb collisions at $\sqrt{s}=5.02$ TeV. The hydrodynamic/hydrokinetic model with UrQMD cascade as 'afterburner' is utilized for this aim. It is found that quantum corrections to the interferometry radii improve significantly the event generator results which typically overestimate the experimental radii of small systems. A successful description of the interferometry structure of $p+p$ collisions within the corrected hydrodynamic model requires the study of the problem of thermalization mechanism, still a fundamental issue for ultrarelativistic $A+A$ collisions, also for high multiplicity $p+p$ and $p+$Pb events.
description: 22 pages, 7 figures
Вопросы устойчивого развития общества,Выпуск 3 МКСС 2022
Creators: name: ООО "Институт развития образования и консалтинга"
Publisher: name: ООО "Институт развития образования и консалтинга"
Year: 2022

description: Вопросы устойчивого развития общества,Выпуск 3 МКСС 2022
Field dependence of the Spin State and Spectroscopic Modes of Multiferroic BiFeO$_3$
Creators: name: Fishman, Randy S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The spectroscopic modes of multiferroic BiFeO$_3$ provide detailed information about the very small anisotropy and Dzyaloshinskii-Moriya (DM) interactions responsible for the long-wavelength, distorted cycloid below $\TN = 640$ K. A microscopic model that includes two DM interactions and easy-axis anisotropy predicts both the zero-field spectroscopic modes as well as their splitting and evolution in a magnetic field applied along a cubic axis. While only six modes are optically active in zero field, all modes at the cycloidal wavevector are activated by a magnetic field. The three magnetic domains of the cycloid are degenerate in zero field but one domain has lower energy than the other two in nonzero field. Measurements imply that the higher-energy domains are depopulated above about 6 T and have a maximum critical field of 16 T, below the critical field of 19 T for the lowest-energy domain. Despite the excellent agreement with the measured spectroscopic frequencies, some discrepancies with the measured spectroscopic intensities suggest that other weak interactions may be missing from the model.
Generalized cable theory for neurons in complex and heterogeneous media
Creators: name: Bedard, Claude
name: Destexhe, Alain
Publisher: name: arXiv
Year: 2013
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Cable theory has been developed over the last decades, usually assuming that the extracellular space around membranes is a perfect resistor. However, extracellular media may display more complex electrical properties due to various phenomena, such as polarization, ionic diffusion or capacitive effects, but their impact on cable properties is not known. In this paper, we generalize cable theory for membranes embedded in arbitrarily complex extracellular media. We outline the generalized cable equations, then consider specific cases. The simplest case is a resistive medium, in which case the equations recover the traditional cable equations. We show that for more complex media, for example in the presence of ionic diffusion, the impact on cable properties such as voltage attenuation can be significant. We illustrate this numerically always by comparing the generalized cable to the traditional cable. We conclude that the nature of intracellular and extracellular media may have a strong influence on cable filtering as well as on the passive integrative properties of neurons.
description: Phys Rev E, in press, 2013 (11 figures)
Effective Medium Response of Metallic Nanowire Arrays with a Kerr-type Dielectric Host
Creators: name: Silveirinha, Mario
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We derive an effective medium model to characterize the macroscopic electromagnetic response of metallic nanowire arrays embedded in a host dielectric with a Kerr-type nonlinear permittivity function. It is shown that the macroscopic electromagnetic fields are coupled to the conduction current in the nanowires and to an additional quasi-static potential through a system of nonlinear equations. We prove that a weak nonlinearity leads to an electromagnetic response closer to that of an indefinite medium, and to isofrequency contours with increased hyperbolicity. For high-field intensities the negative refraction of electromagnetic waves at an air nanowire material interface is enhanced when the nanowires are embedded in a self-focusing Kerr medium.
description: 43 pages in press (to appear in Phys. Rev. B)
Voyant Tools untuk Analisis Teks
Creators: name: Syahid, Abdul
Publisher: name: Zenodo
Year: 2020
Subjects: Voyant Tools
analisis teks
interpretasi
teks digital

description: Presentasi ini bertujuan untuk memperkenalkan Voyant Tools. Voyan Tools merupakan aplikasi berbasis web yang berguna untuk menganalisis data berbentuk teks.
description: {"references": ["Escobar, L. C. (2016, December). Using Voyant to Explore Text Data. Presented at the Connected Health Conference, National Harbor, Maryland. Retrieved from https://slideplayer.com/slide/15544014/"]}
Experimental investigation of the profile drag and boundary layer of a wing section during free flight and in the wind tunnel
Creators: name: Piper, Clark Neil
Publisher: name: California Institute of Technology
Year: 1939
Subjects: Aeronautics

description: A general report covering the method used in obtaining flight test and wind tunnel data for the investigation of profile drag and the thickness of the boundary layer with its transition point is presented, together with some of the results and conclusions reached.

Methods of data reduction with the difficulties encountered are given.  After final results of the profile drag for flight test are obtained, they are compared with T. N. 695.

A detailed description of the apparatus with the technique used for both the flight tests and the wind tunnel is also presented.
ALMA Observations of the HH 46/47 Molecular Outflow
Creators: name: Arce, Hector G.
name: Mardones, Diego
name: Corder, Stuartt A.
name: Garay, Guido
name: Noriega-Crespo, Alberto
name: Raga, Alejandro C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The morphology, kinematics and entrainment mechanism of the HH 46/47 molecular outflow were studied using new ALMA Cycle 0 observations. Results show that the blue and red lobes are strikingly different. We argue that these differences are partly due to contrasting ambient densities that result in different wind components having a distinct effect on the entrained gas in each lobe. A 29-point mosaic, covering the two lobes at an angular resolution of about 3", detected outflow emission at much higher velocities than previous observations, resulting in significantly higher estimates of the outflow momentum and kinetic energy than previous studies of this source, using the CO(1-0) line. The morphology and the kinematics of the gas in the blue lobe are consistent with models of outflow entrainment by a wide-angle wind, and a simple model describes the observed structures in the position-velocity diagram and the velocity-integrated intensity maps. The red lobe exhibits a more complex structure, and there is evidence that this lobe is entrained by a wide-angle wind and a collimated episodic wind. Three major clumps along the outflow axis show velocity distribution consistent with prompt entrainment by different bow shocks formed by periodic mass ejection episodes which take place every few hundred years. Position-velocity cuts perpendicular to the outflow cavity show gradients where the velocity increases towards the outflow axis, inconsistent with outflow rotation. Additionally, we find evidence for the existence of a small outflow driven by a binary companion.
description: 14 pages (including 11 figures). Accepted by The Astrophysical Journal