cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
PBH Dark Matter in Supergravity Inflation Models
Creators: name: Kawasaki, Masahiro
name: Kusenko, Alexander
name: Tada, Yuichiro
name: Yanagida, Tsutomu T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a novel scenario to produce abundant primordial black holes (PBHs) in new inflation which is a second phase of a double inflation in the supergravity frame work. In our model, some preinflation phase before the new inflation is assumed and it would be responsible for the primordial curvature perturbations on the cosmic microwave background scale, while the new inflation produces only the small scale perturbations. Our new inflation model has linear, quadratic, and cubic terms in its potential and PBH production corresponds with its flat inflection point. The linear term can be interpreted to come from a supersymmetry-breaking sector, and with this assumption, the vanishing cosmological constant condition after inflation and the flatness condition for the inflection point can be consistently satisfied.
description: 9 pages, 3 figures, PRD accepted version
On asymptotic behavior of the modified Arratia flow
Creators: name: Konarovskyi, Vitalii
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 82B21, 60K35 (Primary), 60D05 (Secondary)

description: We study asymptotic properties of the system of interacting diffusion particles on the real line which transfer a mass [arXiv:1408.0628]. The system is a natural generalization of the coalescing Brownian motions. The main difference is that diffusion particles coalesce summing their mass and changing their diffusion rate inversely proportional to the mass. First we construct the system in the case where the initial mass distribution has the moment of the order greater then two as an $L_2$-valued martingale with a suitable quadratic variation. Then we find the relationship between the asymptotic behavior of the particles and local properties of the mass distribution at the initial time.
Rotation and vibration in tetraquarks
Creators: name: Jalili, Amir
name: Segovia, Jorge
name: Pan, Feng
name: Luo, Yan-An
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A novel approach is introduced for obtaining precise solutions of the pairing Hamiltonian for tetraquarks, which utilizes an algebraic technique in infinite dimensions. The parameters involved in the transition phase are calibrated based on potential tetraquark candidates derived from phenomenology. Our investigation shows that the rotation and vibration transitional theory delivers a more accurate explanation for heavy tetraquarks compared to other methods utilizing the same formalism. To illustrate the concept, we compute the spectra of several tetraquarks, namely charm, bottom, bottom-charm and open charm and bottom systems, and contrast them with those of other particles.
description: 13 pages, 4 figures, 4 Tables. Invited contribution to a Special Issue of Few Body Systems: "Emergence and Structure of Baryons -- Selected Contributions from the International Conference Baryons 2022"
Assessment of Loan Repayment Determinant Factors in Microfinance Institutions: The Cases of ADCSI, SFPI And GASHA MFIS
Creators: name: Sinishaw, Dereje
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: The study had looked at the potential of the country regarding loan repayment determinant factors by taking three MFIs as evidence. The study had used both primary and secondary data. The primary data is collected by a means of interview and questionnaire. The secondary data for the study were the empirical literatures of dependent and independent variables. The study had found variables that can affect the loan repayment activities of the three MFIs SFPI, ADCSI, and Gasha. One variable is used with the dependent variable that is the loan repayment of the MFIs. The data for this variable was collected from these three MFIs with questioners and interview. The correlation model is constructed for the dependent variable and the seventeen independent variables. Hypothesis testing is performed using spear man correlation coefficient method because of the independent variables are non-parametric variables. As a result of the hypothesis testing it was found that all the seventeen variables can affect loan repayment of the MFIs. All these variables had positive and significant effect on loan repayment performance. Finally the study had recommended what should be done to improve the loan repayment activities. Key words: Micro Finance Institution, Loan, repayment
Non-abelian $Z$-theory: Berends-Giele recursion for the $α'$-expansion of disk integrals
Creators: name: Mafra, Carlos R.
name: Schlotterer, Oliver
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a recursive method to calculate the $α'$-expansion of disk integrals arising in tree-level scattering of open strings which resembles the approach of Berends and Giele to gluon amplitudes. Following an earlier interpretation of disk integrals as doubly partial amplitudes of an effective theory of scalars dubbed as $Z$-theory, we pinpoint the equation of motion of $Z$-theory from the Berends-Giele recursion for its tree amplitudes. A computer implementation of this method including explicit results for the recursion up to order $α'^7$ is made available on the website http://repo.or.cz/BGap.git
description: 58 pages, harvmac TeX, v2: cosmetic changes, published version
Wilfried Glißmann, Klaus Peters: Mehr Druck durch mehr Freiheit. Die neue Autonomie der Arbeit in ihren paradoxen Formen, Hamburg: VSA-Verlag, 2001, ISBN 3-87975-811-5, 200 S., Euro 25,30
Creators: name: Pankoke, Eckart
Publisher: name: Lucius & Lucius Verlagsgesellschaft
Year: 2004
Subjects: subject: 300
subject: 650

description: Arbeit
The Impact of Foreign Direct Investment on Economic Growth: The Case of Ethiopia
Creators: name: Dessie, Betelhem
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: This paper analyses the impact of foreign direct investment on the economic growth of Ethiopia using Vector Error Correction Model over the period 1981 to 2015. First the study examined the individual growth impact of foreign direct investment. The empirical finding revealed that foreign direct investment has negative significant effect on economic growth in the long run but insignificant effect in the short run. The study examined the causal relationship between foreign direct investment and per capita gross domestic product by using Pairwise Granger causality test. The Pairwise Granger causality test showsthe existence of causal unidirectional relationship from foreign direct investment to per capita gross domestic product. The study also investigates the impact of other macroeconomic variables on per capita gross domestic product. External debt and real effective exchange rate are found to have negative significant effect on per capita gross domestic product in the short run. In the short run, the impact of gross domestic saving on per capita gross domestic product is found to be positive. As that of the first model here also foreign direct investment has negative significant impact on economic growth. The tax incentives provided to foreign investors and the misuse of tax incentives by the investors can be the possible reasons for the negative relationship between foreign direct investment and gross domestic product.
Phenomenology of buoyancy-driven turbulence: recent results
Creators: name: Verma, Mahendra K.
name: Kumar, Abhishek
name: Pandey, Ambrish
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this paper, we review the recent developments in the field of buoyancy-driven turbulence. Scaling and numerical arguments show that the stably-stratified turbulence with moderate stratification has kinetic energy spectrum $E_u(k) \sim k^{-11/5}$ and the kinetic energy flux $Π_u(k) \sim k^{-4/5}$, which is called Bolgiano-Obukhov scaling. The energy flux for the Rayleigh-Bénard convection (RBC) however is approximately constant in the inertial range that results in Kolmorogorv's spectrum ($E_u(k) \sim k^{-5/3}$) for the kinetic energy. The phenomenology of RBC should apply to other flows where the buoyancy feeds the kinetic energy, e.g. bubbly turbulence and fully-developed Rayleigh Taylor instability. This paper also covers several models that predict the Reynolds and Nusselt numbers of RBC. Recent works show that the viscous dissipation rate of RBC scales as $\sim \mathrm{Ra}^{1.3}$, where $\mathrm{Ra}$ is the Rayleigh number.
Supersymmetric Non-abelian DBI Equations from Open Pure Spinor Superstring
Creators: name: Fujii, Ryota
name: Hanazawa, Sota
name: Kanehisa, Hiraki
name: Sakaguchi, Makoto
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The BRST invariance of the open pure spinor superstring is examined in the presence of background superfields on a Dp-brane. We note that the background superfields introduced in this paper depend on boundary fermions. The BRST invariance leads to supersymmetric Dirac-Born-Infeld (DBI) equations for background superfields depending on boundary fermions as well as boundary conditions on spacetime coordinates. After quantizing boundary fermions, background superfields are promoted to non-abelian ones. As a result, we obtain the supersymmetric non-abelian DBI equations from the supersymmetric DBI equations depending on boundary fermions. It is shown that these non-abelian DBI equations reduce to the super-Yang-Mills equations in the limit alpha' -> 0. We also show the nilpotency of the BRST transformation of boundary fermions.
description: 19 pages, typos fixed
Factors Affecting Satisfaction of Exhibitors Participation in Trade Fairs/Exhibition Organized by Addis Ababa Chamber of Commerce and Sectoral Association
Creators: name: Shimeles, Sindu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The title of this research deals with factors affecting satisfaction of exhibitors participation in trade fair/exhibition organized by Addis Ababa Chamber of Commerce Sectorial Association (AACCSA). The study tried to answer the basic research questions to mention but a few are, what are the factors that affect satisfaction of exhibitors participation in trade fairs organized by AACCSA? What advantages do exhibitors achieve from their participating in the trade fair that has been organized by AACCSA? Keeping in mind the general objective of this study, identify the major factors that affect exhibitors' satisfaction while participating in a trade fair/exhibition organized by AACCSA. The purpose of this study is to assess factors affecting exhibitors' satisfaction during participation in a trade fair/exhibition organized by Addis Ababa chamber of commerce and Sectoral Association. This will lead to identify mechanisms needed to be employed to handle factors affecting exhibitors' satisfaction and highlights on the promotion mix needed to be employed in the process of organizing an effective trade fair/exhibition. In order to undertake the research the target population used comprises participants from the Addis Ababa Chamber of Commerce trade fair/exhibition organized at the exhibition center in the year 2017. As per the participant's record of the Addis Ababa Chamber of Commerce International Trade Fair for the year 2017 the local enterprise's participants are 67 companies. In order to look for patterns and relationship between and/or among data groups descriptive and inferential (statistical) analysis are used on the processed data. This study was conducted by defining dependent and independent variables. The dependent variable was exhibitor satisfaction whereas the independent variables were information, place, welfare facilities services, a variety of products, quality of products. Regarding correlation analysis, the dependent and independent variables were associated with each other. In similar fashion, the study sought to establish how the dimension of exhibition satisfaction would influence exhibitor satisfaction using multiple linear regression analysis. The dimensions were: information, place, welfare facilities services, a variety of products and quality of products. The findings indicate that among the dimension, information followed by place and welfare facilities services and quality of products would have the most influence on exhibitors satisfaction. It is recommended that Addis Ababa Chamber of Commerce and Sectoral Association and other actors need to work systematically and in a coordinated manner on the factors influencing exhibition participants' satisfaction when organizing exhibitions/trade fairs and further detail studies should be conducted on the individual factors influencing exhibitors' satisfaction.
Digital lattice gauge theories
Creators: name: Zohar, Erez
name: Farace, Alessandro
name: Reznik, Benni
name: Cirac, J. Ignacio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a general scheme for a digital construction of lattice gauge theories with dynamical fermions. In this method, the four-body interactions arising in models with $2+1$ dimensions and higher, are obtained stroboscopically, through a sequence of two-body interactions with ancillary degrees of freedom. This yields stronger interactions than the ones obtained through pertubative methods, as typically done in previous proposals, and removes an important bottleneck in the road towards experimental realizations. The scheme applies to generic gauge theories with Lie or finite symmetry groups, both Abelian and non-Abelian. As a concrete example, we present the construction of a digital quantum simulator for a $\mathbb{Z}_{3}$ lattice gauge theory with dynamical fermionic matter in $2+1$ dimensions, using ultracold atoms in optical lattices, involving three atomic species, representing the matter, gauge and auxiliary degrees of freedom, that are separated in three different layers. By moving the ancilla atoms with a proper sequence of steps, we show how we can obtain the desired evolution in a clean, controlled way.
Deterring anti-social behaviour and crime in the public train environment by design
Creators: name: Diec, Jessica.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Fano stability diagram of a symmetric triple quantum dot
Creators: name: Niklas, Michael
name: Trottmann, Andreas
name: Donarini, Andrea
name: Grifoni, Milena
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Fano factor stability diagram of a C$_{3v}$ symmetric triangular quantum dot is analysed for increasing electron fillings $N$. At low filling, conventional Poissonian and sub-Poissonian behavior is found. At larger filling, $N\ge 2$, a breaking of the electron-hole symmetry is manifested in super-Poissonian noise with a peculiar bias voltage dependence of the Fano factor at Coulomb and interference blockade. An analysis of the Fano map unravels a nontrivial electron bunching mechanism arising from the presence of degenerate many-body states combined with orbital interference and Coulomb interactions. An expression for the associated dark states is provided for generic $N$.
The Impact of Ethio-China Relations: Focus on Infrastructure Development in Addis Ababa
Creators: name: Nafkot, Aschenaki
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: The research looks one of the growing debate and discussions regarding the relations between China and African state. The focus of the research is on the impact of Ethiopia and China's economic relations, paying attention to infrastructural development projects in Addis Ababa. The motive behind focusing on this area was mainly because of the epistemology gap that exist regarding Chinese synergies with developing countries and also the policy implications of the ever growing infrastructural development projects within Addis Ababa. In this discussion, there three major school of thoughts that have dominated the Sino African synergies that this research used in analyzing the matter. The three schools of thought that the research has used in this analysis have been the Sino pragmatism, Sino pessimism and the Sino optimism. The research has explored previous researches and previous literature that was available, to get some of the arguments surrounding the Chinese infrastructural developments in Ethiopia. The research was not solely based on secondary data, there was also primary data which was gathered in this research through interviews, questionnaires and direct observations. It was more review of the three schools of thought, to determine which one amongst the three schools of thought best describes the infrastructural development project by the Chinese in Ethiopia. The research concluded by identifying the bottlenecks in these infrastructural development project, coming up with recommendations and also identifying areas for further research.
Single Rotational Product Propensity in the Photodissociation of HOD
Creators: name: Harich, S. A.
name: Yang, X.
name: Yang, X. F.
name: Van Harrevelt, R.
name: Van Hemert, M. C.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Entropic contribution to phenotype fitness
Creators: name: Catalán, Pablo
name: García-Martín, Juan Antonio
name: Aguirre, Jacobo
name: Cuesta, José A.
name: Manrubia, Susanna
Publisher: name: arXiv
Year: 2023
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: All possible phenotypes are not equally accessible to evolving populations. In fact, only phenotypes of large size, i.e. those resulting from many different genotypes, are found in populations of sequences, presumably because they are easier to discover and maintain. Genotypes that map to these phenotypes usually form mostly connected genotype networks that percolate the space of sequences, thus guaranteeing access to a large set of alternative phenotypes. Within a given environment, where specific phenotypic traits become relevant for adaptation, the replicative ability of a phenotype and its overall fitness (in competition experiments with alternative phenotypes) can be estimated. Two primary questions arise: how do phenotype size, reproductive capability and topology of the genotype network affect the fitness of a phenotype? And, assuming that evolution is only able to access large phenotypes, what is the range of unattainable fitness values? In order to address these questions, we quantify the adaptive advantage of phenotypes of varying size and spectral radius in a two-peak landscape. We derive analytical relationships between the three variables (size, topology, and replicative ability) which are then tested through analysis of genotype-phenotype maps and simulations of population dynamics on such maps. Finally, we analytically show that the fraction of attainable phenotypes decreases with the length of the genotype, though its absolute number increases. The fact that most phenotypes are not visible to evolution very likely forbids the attainment of the highest peak in the landscape. Nevertheless, our results indicate that the relative fitness loss due to this limited accessibility is largely inconsequential for adaptation.
description: 25 pages, 10 figures, uses iopart.cls, iopart10.clo, iopart12.clo, iopams.sty, setstack.sty
Monte Carlo Simulation of the Crossover from Bose Glass to Bragg Glass Phase in Layered BSCCO with Columnar Defects
Creators: name: Queiroz, L. M.
name: Coutinho-Filho, M. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Monte Carlo simulations of layered BSCCO samples are used to investigate the behavior of vortex matter at low fields, particularly in connection with the possible occurrence of a Bragg glass (BrG) phase at low density of columnar defects, a phenomenon characterized by the prevalence of short-range over long-range order. In this dislocation-free topological phase the translational order correlation function displays a power law decay. For magnetic induction $B=0.1$ kG the analysis of the data for the first Bragg peak of the planar structure factor, the hexatic order parameter, and the Delaunay triangulation shows that, as the density of columnar defects is lowered, a \textit{crossover} (or transition) from Bose glass to BrG phase takes place in this \textit{highly anisotropic} high-T${}_c$ superconductor. Most importantly, an analysis of the {low-temperature} 3D vortex-vortex correlation function in terms of the structure factor, calculated via a saddle point approach and the use of the numerical data as input, provides clear-cut evidence of {the} power law decay of the {divergent} Bragg peaks in the BrG phase, a fundamental feature that was inequivocally verified only in isotropic compounds.
description: 11 pages, 4 figures
The Challenges of Managing Development Programs in Public Sector: the Case of e-government Program in Ethiopia
Creators: name: Tadele, Jember
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: Information and Communication Technologies (ICTs) have been expected as a powerful tool for development. However, there is a high rate of e-government project failures. The purpose of this study was to assess the challenges of managing development programs in public sector: the case of e-government program in Ethiopia. Descriptive survey method was used to attain the objective of the study. The study was conducted by using 4 public institutions engaged in e-government program and or program project implementation and beneficiaries. Respondents were from management of the program/program project, experts, support staffs teachers, students and from business community. Respondents were selected through purposive sampling. Questionnaires, interviews, document review and observation techniques were employed. The statistical tools used to analyze data were percentage, tables, graphs and charts. SPSS is employed to analyze the data. The results have revealed that e-government program has faced and still facing various challenges like lack of public awareness, limited participation of beneficiaries in design and implementation, limited electronic service development culture in Ethiopia, lack of organizational capability, weak program governance and poor strategic e-readiness many of which arise from lack of strategic e-readiness given appreciation to the efforts done so far. As far as the contributions of e-government in the area are concerned, it is insignificant. The government of FDRE has enacted e-government strategy in 2010, which is a tool for e- government program in Ethiopia. Its immediate impact will be discouraging against efforts exerted and even the cumulative positive effect of its outcome is time taking. In the long term its effect will be highly encouraging as the experience from literature, empirical review and discussion part shows. Office for e-government councils should be opened. Government in a short period shall designate e-government high level council members to overcome the challenges. Finally it will support to assure the expected outcome of the program
Digital quantum simulation of $\mathbb{Z}_2$ lattice gauge theories with dynamical fermionic matter
Creators: name: Zohar, Erez
name: Farace, Alessandro
name: Reznik, Benni
name: Cirac, J. Ignacio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a scheme for digital quantum simulation of lattice gauge theories with dynamical fermions. Using a layered optical lattice with ancilla atoms that can move and interact with the other atoms (simulating the physical degrees of freedom), we obtain a stroboscopic dynamics which yields the four-body plaquette interactions, arising in models with $2+1$ and higher dimensions, without the use of perturbation theory. As an example we show how to simulate a $\mathbb{Z}_2$ model in $2+1$ dimensions.
Coherent pion production in proton-deuteron collisions
Creators: name: Dymov, S.
name: Shmakova, V.
name: Mchedlishvili, D.
name: Azaryan, T.
name: Barsov, S.
name: Dzyuba, A.
name: Engels, R.
name: Gebel, R.
name: Goslawski, P.
name: Gou, B.
name: Grigoryev, K.
name: Hartmann, M.
name: Kacharava, A.
name: Komarov, V.
name: Khoukaz, A.
name: Kulessa, P.
name: Kulikov, A.
name: Kurbatov, V.
name: Lomidze, N.
name: Lorentz, B.
name: Macharashvili, G.
name: Merzliakov, S.
name: Mielke, M.
name: Mikirtytchiants, S.
name: Nioradze, M.
name: Ohm, H.
name: Papenbrock, M.
name: Prasuhn, D.
name: Rathmann, F.
name: Serdyuk, V.
name: Seyfarth, H.
name: Ströher, H.
name: Tabidze, M.
name: Trusov, S.
name: Tsirkov, D.
name: Uzikov, Yu.
name: Valdau, Yu.
name: Wilkin, C.
name: Wüstner, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Values of the proton analysing power in the $pd\to{}^{3}\textrm{He}\,π^0/^{3}\textrm{H}\,π^+$ reactions at 350-360~MeV per nucleon were obtained by using a polarised proton beam incident on a deuterium cluster-jet target and with a polarised deuteron beam incident on a target cell filled with polarised hydrogen. These results have a much larger angular coverage than existing data. First measurements are also presented of the deuteron vector analysing power and the deuteron-proton spin correlations. Data were also obtained on the deuteron-proton spin correlation and proton analysing power at small angles at 600~MeV per nucleon, though the angular coverage at this energy was much more restricted even when using a deuteron beam. By combining the extrapolated values of the spin correlations to the forward or backward directions with published measurements of the deuteron tensor analysing powers, the relative phases between the two non-vanishing amplitudes were evaluated.
description: 5 pages, 5 figures
The investigation, research and conceptual development of a vehicle that would be capable of meeting the general requirements of the agricultural user as well as fulfilling a versatile transport role
Creators: name: Farrer, Peter B.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Direct Observation of Mass Oscillations Due to Ablative Richtmyer-Meshkov Instability in Plastic Targets
Creators: name: Aglitskiy, Y.
name: Karasik, M.
name: Pawley, C. J.
name: Serlin, V.
name: Velikovich, A. L.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Ponderomotive dynamics of waves in quasiperiodically modulated media
Creators: name: Ruiz, D. E.
name: Dodin, I. Y.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Similarly to how charged particles experience time-averaged ponderomotive forces in high-frequency fields, linear waves also experience time-averaged refraction in modulated media. Here we propose a covariant variational theory of this "ponderomotive effect on waves" for a general nondissipative linear medium. Using the Weyl calculus, our formulation accommodates waves with temporal and spatial period comparable to that of the modulation (provided that parametric resonances are avoided). Our theory also shows that any wave is, in fact, a polarizable object that contributes to the linear dielectric tensor of the ambient medium. The dynamics of quantum particles is subsumed as a special case. As an illustration, ponderomotive Hamiltonians of quantum particles and photons are calculated within a number of models. We also explain a fundamental connection between these results and the commonly known expression for the electrostatic dielectric tensor of quantum plasmas.
description: 14 pages, 2 figures
Direct Observation of Feedout-Related Mass Oscillations in Plastic Targets
Creators: name: Aglitskiy, Y.
name: Karasik, M.
name: Pawley, C. J.
name: Serlin, V.
name: Velikovich, A. L.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Type A blocks of super category O
Creators: name: Brundan, Jonathan
name: Davidson, Nicholas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 16E05, 16S38, 17B37

description: We show that every integral block of category O for the general linear Lie superalgebra is equivalent to a corresponding block of category O for the queer Lie superalgebra. This implies the truth of the Kazhdan-Lusztig conjecture for the so-called type A blocks of category O for the queer Lie superalgebra, as formulated by Cheng, Kwon and Wang.
description: final version, 28 pages
Abarzuza, Javier de, O. F. M. Cap., Teologia del Dogma Catolico, vol. de LXXII+1564 ps. 140x210, ed. Studium. Madrid 1966
Creators: name: Correia, Francisco Carvalho
Publisher: name: Theologica
Year: 1967

description: Theologica, v. 2 n. 1 (1967)
Solving puzzles of GW150914 by primordial black holes
Creators: name: Blinnikov, S.
name: Dolgov, A.
name: Porayko, N. K.
name: Postnov, K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The black hole binary properties inferred from the LIGO gravitational wave signal GW150914 posed several serious problems. The high masses and low effective spin of black hole binary can be explained if they are primordial (PBH) rather than the products of the stellar binary evolution. Such PBH properties are postulated ad hoc but not derived from fundamental theory. We show that the necessary features of PBHs naturally follow from the slightly modified Affleck-Dine (AD) mechanism of baryogenesis. The log-normal distribution of PBHs, predicted within the AD paradigm, is adjusted to provide an abundant population of low-spin stellar mass black holes. The same distribution gives a sufficient number of quickly growing seeds of supermassive black holes observed at high redshifts and may comprise an appreciable fraction of Dark Matter which does not contradict any existing observational limits. Testable predictions of this scenario are discussed.
description: pdflatex, 15 pages, 5 figures, close to the JCAP version, except for figure numbering
Cosymplectic groupoids
Creators: name: Fernandes, Rui Loja
name: Ponte, David Iglesias
Publisher: name: arXiv
Year: 2023
Subjects: subject: Symplectic Geometry (math.SG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: A cosymplectic groupoid is a Lie groupoid with a multiplicative cosymplectic structure. We provide several structural results for cosymplectic groupoids and we discuss the relationship between cosymplectic groupoids, Poisson groupoids of corank 1, and oversymplectic groupoids of corank 1.
description: 27 pages; An error in section 4, spotted by the referee, was corrected. Other minor issues and typos were fixed. Final version accepted for publication in Journal of Geometry and Physics
МЕЖДУНАРОДНАЯ ЭКСПАНСИЯ ГОСТИНИЧНЫХ БРЕНДОВ
Creators: name: Научный руководитель: Истамова Мухаббат Исроиловна ассистент-стажер кафедры «Сервис»  Самаркандского института экономики и сервиса
name: Mahmudov Husniddin Umarbekovich Студентка 2 курса Самаркандского института  экономики и сервиса по специальности  «Организация и управление гостиничным хозяйством
Publisher: name: Zenodo
Year: 2024

description: В этой статье подробно рассматриваются важность гостиничных брендов и их влияние на экономический рост для развития стран. Помимо этого, автор рассуждает о некоторых стратегиях управления отелями на примере реальных гостиничных брендов мира.

Ключевые слова: гостиничные бренды, менеджмент, стратегии управления, дизайн, известные продукты, прибыль и др.
The Foundation of Freedom: How Black Women Sustain Democracy through Liberation Technologies using #BlackLivesMatter
Creators: name: Madkins, Chardonnay
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: Black Lives Matter
subject: Social Movements
subject: Black Feminist Politics

description: Behind every major historical Black liberation movement, Black women have led as theorists, organizers, and political leaders. Despite their leadership, Black women’s work has historically gone unacknowledged, taken for granted, and co-opted for the benefit of their male counterparts. However, as we enter into the digital age, we’re witness to similar leadership of Black women, now having the ability to reach a global audience directly. With this hyper visibility, Black women have the spotlight as leaders of contemporary Black liberation movements, while simultaneously promulgating and organizing around their specific political views. Building from previous Black women leaders, contemporary activists are using previous scholarship as a guiding framework to inform their political movement. With this study, we may explore the expansive history of Black women’s activism and their contribution to advancing democracy.
The Effect of Customer Relationship Marketing on Customer Loyalty in public and private Commercial Banks in Ethiopia
Creators: name: Assefa, Kassa
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The purpose of this study was to explain the effects of customer relationship marketing dimensions on customer Loyalty of commercial banks in Ethiopia. Samples of 400 respondents were drawn from both public and private commercial banks in Addis Ababa, Ethiopia where structured questionnaires were distributed to these samples. However, the response rate from among the intended samples was only 96% therefore; around 384 responses were found to be workable by this study. A theoretical framework was used as a guideline to test the relationships between relationship marketing dimensions and customer loyalty. A quantitative method which is cross-sectional study with deductive approach and explanatory type of research design was chosen in this study. SPSS V 24.0 was used to analyze the data collected and to test the hypotheses put forward. The findings of this study then showed that all the dimensions of customer relationship marketing namely, trust, commitment, conflict handling, empathy and communication have a positive and significant relationship with customer Loyalty of commercial banks in Ethiopia which led to, the acceptance of hypotheses one through five. And this was found by running correlation and multiple linear regression analysis on SPSS.Also the testing of the sixth and the seven hypotheses, which set out to find any significant difference between the different dimensions of customer relationship marketing dimensions and customer loyalty of public and private banks respectively showed that there was significant difference which led to the acceptance of hypotheses six and seven. These findings are beneficial for both public and private banks in Ethiopia to make their customers Loyal
Physics-informed radial basis network (PIRBN): A local approximating neural network for solving nonlinear PDEs
Creators: name: Bai, Jinshuai
name: Liu, Gui-Rong
name: Gupta, Ashish
name: Alzubaidi, Laith
name: Feng, Xi-Qiao
name: Gu, YuanTong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Our recent intensive study has found that physics-informed neural networks (PINN) tend to be local approximators after training. This observation leads to this novel physics-informed radial basis network (PIRBN), which can maintain the local property throughout the entire training process. Compared to deep neural networks, a PIRBN comprises of only one hidden layer and a radial basis "activation" function. Under appropriate conditions, we demonstrated that the training of PIRBNs using gradient descendent methods can converge to Gaussian processes. Besides, we studied the training dynamics of PIRBN via the neural tangent kernel (NTK) theory. In addition, comprehensive investigations regarding the initialisation strategies of PIRBN were conducted. Based on numerical examples, PIRBN has been demonstrated to be more effective and efficient than PINN in solving PDEs with high-frequency features and ill-posed computational domains. Moreover, the existing PINN numerical techniques, such as adaptive learning, decomposition and different types of loss functions, are applicable to PIRBN. The programs that can regenerate all numerical results can be found at https://github.com/JinshuaiBai/PIRBN.
description: 48 pages, 26 figures
Graviton mass might reduce tension between early and late time cosmological data
Creators: name: De Felice, Antonio
name: Mukohyama, Shinji
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The standard $Λ$-CDM predicts a growth of structures which tends to be higher than the values of redshift space distortion (RSD) measurements, if the cosmological parameters are fixed by the CMB data. In this paper we point out that this discrepancy can be resolved/understood if we assume that the graviton has a small but non-zero mass. In the context of the Minimal Theory of Massive Gravity (MTMG), due to infrared Lorentz violations measurable only at present cosmological scales, the graviton acquires a mass without being haunted by unwanted extra degrees of freedom. While the so-called self-accelerating branch of cosmological solutions in MTMG has the same phenomenology for the background as well as the scalar- and vector-type linear perturbations as the $Λ$-CDM in General Relativity (GR), it is possible to choose another branch so that the background is the same as that in GR but the evolution of matter perturbations gets modified by the graviton mass. On studying the fit of such modified dynamics to the above-mentioned RSD measurements, we find that the $Λ$-CDM model is less probable than MTMG by two orders of magnitude. With the help of the cross correlation between the integrated Sachs-Wolfe (ISW) effect and the large scale structure (LSS), the data also pin-down the graviton mass squared around $μ^2\approx - (3\times 10^{-33} \rm{eV})^2$, which is consistent with the latest bound $|μ^2|
description: 4 pages, 4 figures. Revised to match the PRL version
On the efficiency of Gini’s mean difference
Creators: name: Gerstenberger, Carina
name: Vogel, Daniel
Publisher: name: Technische Universität Dortmund
Year: 2015
Subjects: subject: influence function
subject: standard deviation
subject: Qn
subject: robustness
subject: residue theorem
subject: normal mixture distribution
subject: median absolute deviation
subject: mean deviation
subject: 310
subject: 330
subject: 620

description: The asymptotic relative efficiency of the mean deviation with respect to the standard deviation is 88% at the normal distribution. In his seminal 1960 paper A survey of sampling from contaminated distributions, J. W. Tukey points out that, if the normal distribution is contaminated by a small c-fraction of a normal distribution with three times the standard deviation, the mean deviation is more efficient than the standard deviation - already for c < 1%. In the present article, we examine the efficiency of Gini's mean difference (the mean of all pairwise distances). Our results may be summarized by saying Gini's mean difference combines the advantages of the mean deviation and the standard deviation. In particular, an analytic expression for the finite- sample variance of Gini's mean difference at the normal mixture model is derived by means of the residue theorem, which is then used to determine the contamination fraction in Tukey's 1:3 normal mixture distribution that renders Gini's mean difference and the standard deviation equally effcient. We further compute the in influence function of Gini's mean difference, and carry out extensive finite-sample simulations.
description: Discussion Paper / SFB 823;10/2015
Onset of anomalous diffusion from local motion rules
Creators: name: de Nigris, Sarah
name: Carletti, Timoteo
name: Lambiotte, Renaud
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Anomalous diffusion processes, in particular superdiffusive ones, are known to be efficient strategies for searching and navigation by animals and also in human mobility. One way to create such regimes are Lévy flights, where the walkers are allowed to perform jumps, the "flights", that can eventually be very long as their length distribution is asymptotically power-law distributed. In our work, we present a model in which walkers are allowed to perform, on a 1D lattice, "cascades" of $n$ unitary steps instead of one jump of a randomly generated length, as in the Lévy case, where $n$ is drawn from a cascade distribution $p_n$. We show that this local mechanism may give rise to superdiffusion or normal diffusion when $p_n$ is distributed as a power law. We also introduce waiting times that are power-law distributed as well and therefore the probability distribution scaling is steered by the two PDF's power-law exponents. As a perspective, our approach may engender a possible generalization of anomalous diffusion in context where distances are difficult to define, as in the case of complex networks, and also provide an interesting model for diffusion in temporal networks.
description: 10 pages,4 figures
Thils, Gustave, Le Décret sur l’oecuménisme du deuxième Concile du Vatican, Vol. de 206 ps. 140x200, ed. Desclée de Brouwer. Paris 1966
Creators: name: Correia, Francisco Carvalho
Publisher: name: Theologica
Year: 1967

description: Theologica, v. 2 n. 1 (1967)
de Sitter Space is Unstable in Quantum Gravity
Creators: name: Rajaraman, Arvind
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Graviton loop corrections to observables in de Sitter space often lead to infrared divergences. We show that these infrared divergences are resolved by the spontaneous breaking of de Sitter invariance.
description: 13 pages, references added
Mpemba effect in a Langevin system: population statistics, metastability and other exact results
Creators: name: Biswas, Apurba
name: Rajesh, R.
name: Pal, Arnab
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Mpemba effect is a fingerprint of the anomalous relaxation phenomenon wherein an initially hotter system equilibrates faster than an initially colder system when both are quenched to the same low temperature. Experiments on a single colloidal particle trapped in a carefully shaped double well potential have demonstrated this effect recently [Nature 584, 64 (2020)]. In a similar vein, here, we consider a piece-wise linear double well potential that allows us to demonstrate the Mpemba effect using an exact analysis based on the spectral decomposition of the corresponding Fokker-Planck equation. We elucidate the role of the metastable states in the energy landscape as well as the initial population statistics of the particles in showcasing the Mpemba effect. Crucially, our findings indicate that neither the metastability nor the asymmetry in the potential is a necessary or a sufficient condition for the Mpemba effect to be observed.
description: 14 pages, 9 figures, Included minor changes as compared to its previous version
НЕДОСТАТКИ И ПРЕИМУЩЕСТВА РАЗЛИЧНЫХ ТЕХНИК ПОЛУЧЕНИЯ СЛЕПКИ ЗУБОВ
Creators: name: Ахмадов, Иномжон
name: Санакулов, Жамшед
Publisher: name: Zenodo
Year: 2024

description: Технологии, а за ними техники и методики, активно развиваются и буквально врываются в стоматологию, которая всё также остается максимально консервативной. В этой статье описан недостатки и преимущества различных техник получения слепков.
Santos, Angel, S. J. Decreto sobre la actividad misional de la Iglesia. Texto y comentário, vol. de 630 ps. 115x180, ed. Apostolato de la Prensa. Madrid
Creators: name: Correia, Francisco Carvalho
Publisher: name: Theologica
Year: 1967

description: Theologica, v. 2 n. 1 (1967)
Fair distributed user-traffic association in cache equipped cellular networks
Creators: name: Krolikowski, Jonatan
name: Giovanidis, Anastasios
name: Di Renzo, Marco
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Caching of popular content on wireless nodes is recently proposed as a means to reduce congestion in the backbone of cellular networks and to improve Quality of Service. From a network point of view, the goal is to offload as many users as possible from the backbone network to the wireless caches while at the same time offering good service to cache-unrelated users. Aggressive offloading can lead to an unbalanced user association. Some wireless nodes can be overloaded by cache-related traffic while the resources of others remain underused. Given a fixed content placement, this work proposes an efficient distributed algorithm to control and balance the association of cache-related traffic among cellular cache memories. The algorithm allows the network to achieve the globally optimal solution and can be executed on base stations using a limited amount of information exchange between them. It is based on a novel algorithm we call Bucket-filling. The solution limits the cache-users per node by balancing the total load among the nodes in a fair way. The improvement compared to common user assignment policies is highlighted for single- as well as for multi-tier random networks.
description: 6 pages, double column, 4 figures