cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spectroscopic characterization and detection of Ethyl Mercaptan in Orion
Creators: name: Kolesniková, L.
name: Tercero, B.
name: Cernicharo, J.
name: Alonso, J. L.
name: Daly, A. M.
name: Gordon, B. P.
name: Shipman, S. T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: New laboratory data of ethyl mercaptan, CH$_{3}$CH$_{2}$SH, in the millimeter and submillimeter-wave domains (up to 880 GHz) provided very precise values of the spectroscopic constants that allowed the detection of $gauche$-CH$_3$CH$_2$SH towards Orion KL. 77 unblended or slightly blended lines plus no missing transitions in the range 80-280 GHz support this identification. A detection of methyl mercaptan, CH$_{3}$SH, in the spectral survey of Orion KL is reported as well. Our column density results indicate that methyl mercaptan is $\simeq$ 5 times more abundant than ethyl mercaptan in the hot core of Orion KL.
description: Accepted for publication in ApJL (30 January 2014)/ submitted (8 January 2014)
Dipolar optical plasmon in thin-film Weyl semimetals
Creators: name: Giri, Debasmita
name: Mukherjee, Dibya Kanti
name: Verma, Sonu
name: Fertig, H. A.
name: Kundu, Arijit
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In a slab geometry with large surface-to-bulk ratio, topological surface states such as Fermi arcs for Weyl or Dirac semimetals may dominate their low-energy properties. We investigate the collective charge oscillations in such systems, finding striking differences between Weyl and conventional electronic systems. Our results, obtained analytically and verified numerically, predict that the Weyl semimetal thin-film host a single $ω\propto \sqrt{q}$ plasmon mode, that results from collective, anti-symmetric charge oscillations of between the two surfaces, in stark contrast to conventional 2D bi-layers as well as Dirac semimetals with Fermi arcs, which support anti-symmetric acoustic modes along with a symmetric optical mode. These modes lie in the gap of the particle-hole continuum and are thus spectroscopically observable and potentially useful in plasmonic applications.
description: Comments are welcome
The Krein-von Neumann extension revisited
Creators: name: Fucci, Guglielmo
name: Gesztesy, Fritz
name: Kirsten, Klaus
name: Littlejohn, Lance L.
name: Nichols, Roger
name: Stanfill, Jonathan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: Primary: 34B09, 34B24, 34C10, 34L40, Secondary: 34B20, 34B30

description: We revisit the Krein-von Neumann extension in the case where the underlying symmetric operator is strictly positive and apply this to derive the explicit form of the Krein-von Neumann extension for singular, general (i.e., three-coefficient) Sturm-Liouville operators on arbitrary intervals. In particular, the boundary conditions for the Krein-von Neumann extension of the strictly positive minimal Sturm-Liouville operator are explicitly expressed in terms of generalized boundary values adapted to the (possible) singularity structure of the coefficients near an interval endpoint.
description: 26 pages. arXiv admin note: text overlap with arXiv:1910.13117
Hyperbanana Graphs
Creators: name: Clement, Christopher
name: John, Audrey Lee-St.
name: Sidman, Jessica
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05c50

description: A bar-and-joint framework is a finite set of points together with specified distances between selected pairs. In rigidity theory we seek to understand when the remaining pairwise distances are also fixed. If there exists a pair of points which move relative to one another while maintaining the given distance constraints, the framework is flexible; otherwise, it is rigid. Counting conditions due to Maxwell give a necessary combinatorial criterion for generic minimal bar-and-joint rigidity in all dimensions. Laman showed that these conditions are also sufficient for frameworks in R^2. However, the flexible "double banana" shows that Maxwell's conditions are not sufficient to guarantee rigidity in R^3. We present a generalization of the double banana to a family of hyperbananas. In dimensions 3 and higher, these are (infinitesimally) flexible, providing counterexamples to the natural generalization of Laman's theorem.
Pulse Asia Research Poll: June 2019 Ulat ng Bayan Survey
Creators: name: Pulse Asia Research
Publisher: name: Roper Center for Public Opinion Research
Year: 2020

description: Poverty and living standards (5); quality of life in the Philippines (5); urgent national concerns (3); State of the Union Address (SONA) (2); President Rodrigo Duterte job performance (12); ratings of officials and government agencies (39); trust ratings of government officials and agencies (9); trust toward other countries (10); voting in May 2019 elections (4); sample ballots (4); problems voting (2); voter disenfranchisement (3); election standards (9); automated elections and vote counting (3); pre-election campaign rallies (4); giving gifts in exchange for votes (2); democracy (1); anti-illegal drugs campaign (3); West Philippine Sea fishing boat collision incident (2); martial law (1); moving to another country (1); 2019 elections vs. past elections (2); media bias (2); experiences with vote-buying (5).
Degeneracies in triple gravitational microlensing
Creators: name: Song, Ying-Yi
name: Mao, Shude
name: An, Jin H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We study microlensing light curves by a triple lens, in particular, by a primary star plus two planets. A four-fold degeneracy is confirmed in the light curves, similar to the close and wide degeneracy found in a double lens. Furthermore, we derive a set of equations for triple-lens in the external shear approximation. By using these external shear equations, we identify two kinds of continuous degeneracies which may confused double and triple lenses, i.e. the continuous external shear degeneracy among triple-lens systems and the double-triple lens degeneracy. These degeneracies are particularly important in high magnification events, and thus some caution needs to be applied when one infers the fraction of stars hosting multiple planets from microlensing. We study the dependence of the degeneracies on the lensing parameters (e.g., source trajectory) and give recipes about how the degeneracies should be explored with real data.
description: 14 pages, 8 figures, 1 table, MNRAS accepted
Strong rates of convergence of space-time discretization schemes for the 2D Navier-Stokes equations with additive noise
Creators: name: Bessaih, Hakima
name: Millet, Annie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60H15, 60H35, 76D06, 76M35

description: We consider the strong solution of the 2D Navier-Stokes equations in a torus subject to an additive noise. We implement a fully implicit time numerical scheme and a finite element method in space. We prove that the rate of convergence of the schemes is $η\in[0,1/2)$ in time and 1 in space. Let us mention that the coefficient $η$ is equal to the time regularity of the solution with values in $\LL^2$. Our method relies on the existence of finite exponential moments for both the solution and its time approximation. Our main idea is to use a discrete Gronwall lemma for the error estimate without any localization.
description: arXiv admin note: text overlap with arXiv:2004.06932
Stable reconstruction of simple Riemannian manifolds from unknown interior sources
Creators: name: de Hoop, Maarten V.
name: Ilmavirta, Joonas
name: Lassas, Matti
name: Saksala, Teemu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: Consider the geometric inverse problem: There is a set of delta-sources in spacetime that emit waves travelling at unit speed. If we know all the arrival times at the boundary cylinder of the spacetime, can we reconstruct the space, a Riemannian manifold with boundary? With a finite set of sources we can only hope to get an approximate reconstruction, and we indeed provide a discrete metric approximation to the manifold with explicit data-driven error bounds when the manifold is simple. This is the geometrization of a seismological inverse problem where we measure the arrival times on the surface of waves from an unknown number of unknown interior microseismic events at unknown times. The closeness of two metric spaces with a marked boundary is measured by a labeled Gromov--Hausdorff distance. If measurements are done for infinite time and spatially dense sources, our construction produces the true Riemannian manifold and the finite-time approximations converge to it in the metric sense.
description: 39 pages, 1 figure
Spontaneous parametric processes in optical fibers: a comparison
Creators: name: Garay-Palmett, Karina
name: Corona, Maria
name: U'Ren, Alfred
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the processes of spontaneous four wave mixing and of third-order spontaneous parametric downconversion in optical fibers, as the basis for the implementation of photon-pair and photon-triplet sources. We present a comparative analysis of the two processes including expressions for the respective quantum states and plots of the joint spectral intensity, a discussion of phasematching characteristics, and expressions for the conversion efficiency. We have also included a comparative study based on numerical results for the conversion efficiency for the two sources, as a function of several key experimental parameters.
A covariant polymerized scalar field in loop quantum gravity
Creators: name: Benítez, Florencia
name: Gambini, Rodolfo
name: Pullin, Jorge
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a new polymerization scheme for scalar fields coupled to gravity. It has the advantage of being a (non-bijective) canonical transformation of the fields and therefore ensures the covariance of the theory. We study it in detail in spherically symmetric situations and compare to other approaches.
description: 7 pages, RevTex, 1 figure, final submitted version to the Special Issue Loop Quantum Gravity: A Themed Issue in Honor of Prof. Abhay Ashtekar
Vapor condensation onto a non-volatile liquid drop
Creators: name: Inci, Levent
name: Bowles, Richard. K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Molecular dynamics simulations of miscible and partially miscible binary Lennard--Jones mixtures are used to study the dynamics and thermodynamics of vapor condensation onto a non-volatile liquid drop in the canonical ensemble. When the system volume is large, the driving force for condensation is low and only a submonolayer of the solvent is adsorbed onto the liquid drop. A small degree of mixing of the solvent phase into the core of the particles occurs for the miscible system. At smaller volumes complete film formation is observed and the dynamics of film growth are dominated by cluster-cluster coalescence. Mixing into the core of the droplet is also observed for partially miscible systems below an onset volume suggesting, the presence of a solubility transition. We also develop a non-volatile liquid drop model, based on the capillarity approximations, that exhibits a solubility transition between small and large drops for partially miscible mixtures and has a hysteresis loop similar to the one observed in the deliquescence of small soluble salt particles. The properties of the model are compared to our simulation results and the model is used to study the formulation of classical nucleation theory for systems with low free energy barriers.
description: 12 Figures
Shallow sections of the hypercube
Creators: name: Pournin, Lionel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Metric Geometry (math.MG)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: Consider a $d$-dimensional closed ball $B$ whose center coincides with that of the hypercube $[0,1]^d$. Pick the radius of $B$ in such a way that the vertices of the hypercube are outside of $B$ and the midpoints of its edges in the interior of $B$. It is known that, when $d\geq3$, the $(d-1)$-dimensional volume of $H\cap[0,1]^d$, where $H$ is a hyperplane of $\mathbb{R}^d$ tangent to $B$, is largest possible if and only if $H$ is orthogonal to a diagonal of the hypercube. It is shown here that the same holds when $d\geq5$ but the interior of $B$ is only required to contain the centers of the square faces of the hypercube.
description: 19 pages
Positive measure of effective quasi-periodic motion near a Diophantine torus
Creators: name: Bounemoura, Abed
name: Farré, Gerard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37J40

description: It was conjectured by Herman that an analytic Lagrangian Diophantine quasi-periodic torus $\mathcal{T}_0$, invariant by a real-analytic Hamiltonian system, is always accumulated by a set of positive Lebesgue measure of other Lagrangian Diophantine quasi-periodic invariant tori. While the conjecture is still open, we will prove the following weaker statement: there exists an open set of positive measure (in fact, the relative measure of the complement is exponentially small) around $\mathcal{T}_0$ such that the motion of all initial conditions in this set is "effectively" quasi-periodic in the sense that they are close to being quasi-periodic for an interval of time which is doubly exponentially long with respect to the inverse of the distance to $\mathcal{T}_0$. This open set can be thought as a neighborhood of a hypothetical invariant set of Lagrangian Diophantine quasi-periodic tori, which may or may not exist.
Fit4CAD: A point cloud benchmark for fitting simple geometric primitives in CAD objects
Creators: name: Romanengo, Chiara
name: Raffo, Andrea
name: Qie, Yifan
name: Anwer, Nabil
name: Falcidieno, Bianca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Graphics (cs.GR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: J.6; I.3.5

description: We propose Fit4CAD, a benchmark for the evaluation and comparison of methods for fitting simple geometric primitives in point clouds representing CAD objects. This benchmark is meant to help both method developers and those who want to identify the best performing tools. The Fit4CAD dataset is composed by 225 high quality point clouds, each of which has been obtained by sampling a CAD object. The way these elements were created by using existing platforms and datasets makes the benchmark easily expandable. The dataset is already split into a training set and a test set. To assess performance and accuracy of the different primitive fitting methods, various measures are defined. To demonstrate the effective use of Fit4CAD, we have tested it on two methods belonging to two different categories of approaches to the primitive fitting problem: a clustering method based on a primitive growing framework and a parametric method based on the Hough transform.
Learning Large-scale Location Embedding From Human Mobility Trajectories with Graphs
Creators: name: Tian, Chenyu
name: Zhang, Yuchun
name: Weng, Zefeng
name: Gu, Xiusen
name: Chan, Wai Kin Victor
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: An increasing amount of location-based service (LBS) data is being accumulated and helps to study urban dynamics and human mobility. GPS coordinates and other location indicators are normally low dimensional and only representing spatial proximity, thus difficult to be effectively utilized by machine learning models in Geo-aware applications. Existing location embedding methods are mostly tailored for specific problems that are taken place within areas of interest. When it comes to the scale of a city or even a country, existing approaches always suffer from extensive computational cost and significant data sparsity. Different from existing studies, we propose to learn representations through a GCN-aided skip-gram model named GCN-L2V by considering both spatial connection and human mobility. With a flow graph and a spatial graph, it embeds context information into vector representations. GCN-L2V is able to capture relationships among locations and provide a better notion of similarity in a spatial environment. Across quantitative experiments and case studies, we empirically demonstrate that representations learned by GCN-L2V are effective. As far as we know, this is the first study that provides a fine-grained location embedding at the city level using only LBS records. GCN-L2V is a general-purpose embedding model with high flexibility and can be applied in down-streaming Geo-aware applications.
On Feldman-Katok metric and entropy formulae
Creators: name: Cai, Fangzhou
name: Li, Jie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper, we study the Feldman-Katok metric. We give entropy formulas by replacing Bowen metric with Feldman-Katok metric. Some relative topics are also discussed.
Cities as their own downstream user (Towards managed aquifer recharge) - Case Study
Creators: name: Hanjra, Munir A.
name: Drechsel, Pay
name: Hanjra, Munir A.
name: Drechsel, Pay
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agricultural Finance
subject: Environmental Economics and Policy
subject: Health Economics and Policy
subject: Risk and Uncertainty
subject: Downstream
subject: Aquifers
subject: Groundwater recharge
subject: Wastewater treatment
subject: Domestic consumption
subject: Agriculture
subject: Business models
subject: Supply chains
subject: Water management
subject: Water reuse
subject: Environmental impact assessment
subject: Risk reduction
subject: Health hazards

description: In Otoo, Miriam; Drechsel, Pay (Eds.). Resource recovery from waste: business models for energy, nutrient and water reuse in low- and middle-income countries. Oxon, UK: Routledge - Earthscan
Low degree Lorentz invariant polynomials as potential entanglement invariants for multiple Dirac spinors
Creators: name: Johansson, Markus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A system of multiple spacelike separated Dirac particles is considered and a method for constructing polynomial invariants under the spinor representations of the local proper orthochronous Lorentz groups is described. The method is a generalization of the method used in [Phys. Rev. A {\bf 105}, 032402 (2022), arXiv:2103.07784] for the case of two Dirac particles. All polynomials constructed by this method are identically zero for product states. The behaviour of the polynomials under local unitary evolution that acts unitarily on any subspace defined by fixed particle momenta is described. By design all of the polynomials have invariant absolute values on this kind of subspaces if the evolution is locally generated by zero-mass Dirac Hamiltonians. Depending on construction some polynomials have invariant absolute values also for the case of nonzero-mass or additional couplings. Because of these properties the polynomials are considered potential candidates for describing the spinor entanglement of multiple Dirac particles, with either zero or arbitrary mass or additional couplings. Polynomials of degree 2 and 4 are derived for the cases of three and four Dirac spinors. For three spinors no non-zero degree 2 polynomials are found but 67 linearly independent polynomials of degree 4 are identified. For four spinors 16 linearly independent polynomials of degree 2 are constructed as well as 26 polynomials of degree 4 selected from a much larger number. The relations of these polynomials to the polynomial spin entanglement invariants of three and four non-relativistic spin-$\frac{1}{2}$ particles are described. Moreover, it is described how degree 4 polynomials for five spinors can be constructed and how degree 2 polynomials can be constructed for any even number of spinors.
description: Main text 19 pages + Appendices 11 pages. Comments are welcome. v2 Minor revision, references added 20+11 pages. v3 25+12 pages. Major revision, text extended and revised to reflect changes in arXiv:2103.07784, references added. v4 Accepted version, Major revision, text extended, figures added, references added 56+20 pages
Infrared luminescence in Bi-doped Ge-S and As-Ge-S chalcogenide glasses and fibers
Creators: name: Plotnichenko, V. G.
name: Philippovskiy, D. V.
name: Sokolov, V. O.
name: Sukhanov, M. V.
name: Velmuzhov, A. P.
name: Churbanov, M. F.
name: Dianov, E. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Experimental and theoretical studies of spectral properties of chalcogenide Ge-S and As-Ge-S glasses and fibers are performed. A broad infrared (IR) luminescence band which covers the 1.2-2.3~$μ$m range with a lifetime about 6~$μ$s is discovered. Similar luminescence is also present in optical fibers drawn from these glasses. Arsenic addition to Ge-S glass significantly enhances both its resistance to crystallization and the intensity of the luminescence. Computer modeling of Bi-related centers shows that interstitial Bi$^+$ ions adjacent to negatively charged S vacancies are most likely responsible for the IR luminescence.
description: 7 pages, 4 figures
Die evangelische Kirche Augsburger Bekenntnisses in der Sozialistischen Republik Rumänien — ein volkskirchlicher Sonderfall
Creators: name: Philippi, Paul
Publisher: name: Lutherische Kirche in der Welt
Year: 1970

description: Lutherische Kirche in der Welt, Bd. 17 (1970): Lutherische Kirche in der Welt, Band 17
Magnetic order in pyrochlore iridate Nd$_2$Ir$_2$O$_7$ probed by muon spin relaxation
Creators: name: Guo, Hanjie
name: Matsuhira, Kazuyuki
name: Kawasaki, Ikuto
name: Wakeshima, Makoto
name: Hinatsu, Yukio
name: Watanabe, Isao
name: Xu, Zhu-an
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Muon-spin relaxation results on the pyrochlore iridate Nd$_2$Ir$_2$O$_7$ are reported. Spontaneous coherent muon-spin precession below the metal-insulator transition (MIT) temperature of about 33 K is observed, indicating the appearance of a long-ranged magnetic ordering of Ir$^{4+}$ moments. With further decrease in temperature, the internal field at the muon site increases again below about 9 K. The second increase of internal field suggests the ordering of Nd$^{3+}$ moments, which is consistent with a previous neutron experiment. Our results suggest that the MIT and magnetic ordering of Ir$^{4+}$ moments have a close relationship and that the large spin-orbit coupling of Ir 5\textit{d} electrons plays a key role for both MIT and the mechanism of the magnetic ordering in pyrochlore iridates in the insulting ground state.
description: 5 pages, 3 figures. Accepted by Physical Review B (rapid communications)
Darboux integrability for diagonal systems of hydrodynamic type
Creators: name: Agafonov, Sergey I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35A30, 35L65, 53A25

description: We prove that 1) diagonal systems of hydrodynamic type are Darboux integrable if and only if the corresponding systems for commuting flows are Darboux integrable, 2) systems for commuting flows are Darboux integrable if and only if the Laplace transformation sequences terminate, 3) Darboux integrable systems are necessarily semihamiltonian. We give geometric interpretation for Darboux integrability of such systems in terms of congruences of lines and in terms of solution orbits with respect to symmetry subalgebras, discuss known and new examples.
Maximal Digraphs With Respect to Primitive Positive Constructibility
Creators: name: Starke, Florian
name: Bodirsky, Manuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: We study the class of all finite directed graphs up to primitive positive constructability. The resulting order has a unique greatest element, namely the graph $P_1$ with one vertex and no edges. The graph $P_1$ has a unique greatest lower bound, namely the graph $P_2$ with two vertices and one directed edge. Our main result is a complete description of the greatest lower bounds of $P_2$; we call these graphs submaximal. We show that every graph that is not equivalent to $P_1$ and $P_2$ is below one of the submaximal graphs.
Defect-mediated relaxation and non-linear susceptibilities of Rochelle salt
Creators: name: Moina, A. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The deformable pseudospin Mitsui model is modified in order to take into account interactions of the ordering dipoles of Rochelle salt with dipoles, associated with switchable crystal defects. Using the Glauber-type kinetics of the ordering and defect pseudospins, we calculate the linear, second, and third order dynamic susceptibilities and piezoelectric coefficients of the system. The defect-assisted dispersion of the dynamic characteristics below 1 kHz is described. Behavior of the linear and non-linear susceptibilities close to T_C1,2 is also satisfactorily described by the presented model.
description: 17 pages, 7 figures
Price Formation in Agricultural PricesPrice Formation In Agricultural Prices
Creators: name: Fitria, Dina Nurul
name: Harianto
name: Harianto@Gmail.Com
name: Dominicus Savio Priyarsono,
name: Noer Azam Achsani
Publisher: name: figshare
Year: 2020
Subjects: subject: 150304 Entrepreneurship
subject: FOS: Economics and business
subject: 150309 Logistics and Supply Chain Management
subject: 150507 Pricing (incl. Consumer Value Estimation)
subject: 150307 Innovation and Technology Management

description: —Farmers as price takers face two uncertainties include price risk and efficient cost input. Both farmers and traders alike want to maximize profits with the production cost and minimum risk. This situation underlying the conceptual study of random effects on agricultural prices became attractive. Research finds out in farm gate price, the random effects of agricultural commodity prices determine the distribution of sales prices and input prices in the market structure with imperfect competition. This paper is structured as follows the price spread between farm and retail levels which is constituted by mark up or mark down pricing behaviour, namely as threshold behaviour with time lag t-1 and t-2 in red chilli comodity price, as a empiric case of study in West Java Province, Indonesia. Price incentive which comes up from price spread generates the new technology set farmers can adopt the new least cost technology. The price spread occurs in asymmetric way as threshold behaviour of random effects between farm gate price and retail price, established the incentive for farmers to seek new least cost technology.Farmers as price takers face two uncertainties include price risk and efficient cost input. Both farmers and traders alike want to maximize profits with the production cost and minimum risk. This situation underlying the conceptual study of random effects on agricultural prices became attractive. Research finds out in farm gate price, the random effects of agricultural commodity prices determine the distribution of sales prices and input prices in the market structure with imperfect competition. This paper is structured as follows the price spread between farm and retail levels which is constituted by mark up or mark down pricing behaviour, namely as threshold behaviour with time lag t-1 and t-2 in red chilli comodity price, as a empiric case of study in West Java Province, Indonesia. Price incentive which comes up from price spread generates the new technology set farmers can adopt the new least cost technology. The price spread occurs in asymmetric way as threshold behaviour of random effects between farm gate price and retail price, established the incentive for farmers to seek new least cost technology.
A multi-scale method for complex flows of non-Newtonian fluids
Creators: name: Tedeschi, Francesca
name: Giusteri, Giulio G.
name: Yelash, Leonid
name: Lukáčová-Medvid'ová, Mária
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We introduce a new heterogeneous multi-scale method for the simulation of flows of non-Newtonian fluids in general geometries and present its application to paradigmatic two-dimensional flows of polymeric fluids. Our method combines micro-scale data from non-equilibrium molecular dynamics (NEMD) with macro-scale continuum equations to achieve a data-driven prediction of complex flows. At the continuum level, the method is model-free, since the Cauchy stress tensor is determined locally in space and time from NEMD data. The modelling effort is thus limited to the identification of suitable interaction potentials at the micro-scale. Compared to previous proposals, our approach takes into account the fact that the material response can depend strongly on the local flow type and we show that this is a necessary feature to correctly capture the macroscopic dynamics. In particular, we highlight the importance of extensional rheology in simulating generic flows of polymeric fluids.
description: 18 pages, 9 figures
Price's law and precise late-time asymptotics for subextremal Reissner-Nordström black holes
Creators: name: Angelopoulos, Yannis
name: Aretakis, Stefanos
name: Gajic, Dejan
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper, we prove precise late-time asymptotics for solutions to the wave equation supported on angular frequencies greater or equal to $\ell$ on the domain of outer communications of subextremal Reissner-Nordström spacetimes up to and including the event horizon. Our asymptotics yield, in particular, sharp upper and lower decay rates which are consistent with Price's law on such backgrounds. We present a theory for inverting the time operator and derive an explicit representation of the leading-order asymptotic coefficient in terms of the Newman-Penrose charges at null infinity associated with the time integrals. Our method is based on purely physical space techniques. For each angular frequency $\ell$ we establish a sharp hierarchy of $r$-weighted radially commuted estimates with length $2\ell+5$. We complement this hierarchy with a novel hierarchy of weighted elliptic estimates of length $\ell+1$.
description: 65 pages, 2 figures
Turbulence in the highly restricted dynamics of a closure at second order: comparison with DNS
Creators: name: Constantinou, Navid C.
name: Lozano-Durán, Adrian
name: Nikolaidis, Marios-Andreas
name: Farrell, Brian F.
name: Ioannou, Petros J.
name: Jiménez, Javier
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: S3T (Stochastic Structural Stability Theory) employs a closure at second order to obtain the dynamics of the statistical mean turbulent state. When S3T is implemented as a coupled set of equations for the streamwise mean and perturbation states, nonlinearity in the dynamics is restricted to interaction between the mean and perturbations. The S3T statistical mean state dynamics can be approximately implemented by similarly restricting the dynamics used in a direct numerical simulation (DNS) of the full Navier-Stokes equations (referred to as the NS system). Although this restricted nonlinear system (referred to as the RNL system) is greatly simplified in its dynamics in comparison to the associated NS, it nevertheless self-sustains a turbulent state in wall-bounded shear flow with structures and dynamics comparable to that in observed turbulence. Moreover, RNL turbulence can be analyzed effectively using theoretical methods developed to study the closely related S3T system. In order to better understand RNL turbulence and its relation to NS turbulence, an extensive comparison is made of diagnostics of structure and dynamics in these systems. Although quantitative differences are found, the results show that turbulence in the RNL system closely parallels that in NS and suggest that the S3T/RNL system provides a promising reduced complexity model for studying turbulence in wall-bounded shear flows.
description: 18 pages, 14 figures
Nuclear structure properties and decay rates of molybdenum isotopes
Creators: name: Nabi, Jameel-Un
name: Bayram, Tuncay
Publisher: name: arXiv
Year: 2025
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Electron capture and beta-minus decay are the dominant decay processes during the late phases of the evolution of heavy stars. Previous simulation results show that weak rates on isotopes of Molybdenum (Mo) have a meaningful contribution during the development of phases of stars before they go supernova. The relative abundance, coupled with the stellar weak rates on Mo isotopes, may change the lepton-to-baryon content of the core material. Here, we report on the calculation of nuclear structure properties of Mo isotopes from mass number 82 to 138, employing the RMF model. Later, we calculate the weak decay rates of these isotopes using the proton-neutron quasiparticle random phase approximation (pn-QRPA) model. In the first step, the ground-state nuclear properties of Mo isotopes such as binding energy per nucleon, neutron and proton separation energies, charge radii, total electric quadrupole moments, and the deformation parameter of electric quadrupole moments have been calculated using the density-dependent version of the RMF model with DD-PC1 and DD-ME2 functionals. The calculated electric quadrupole deformation parameters have been used in a deformed pn-QRPA calculation in the second phase of this work to calculate half-lives and weak decay rates for these Mo isotopes in stellar matter. We calculate the electron capture and beta-decay rates over an extensive range of temperature (0.01 x 10^9 K to 30 x 10^9 K) and density (10 to 10^11 g/cm^3). Our study can prove useful for simulation of presupernova evolution processes of stars.
description: 24 Pages, 10 Figures, 4 Tables
Dual-frequency Doppler-free spectroscopy for simultaneous laser stabilisation in compact atomic physics experiments
Creators: name: Cooper, Nathan
name: Madkhaly, Somaya
name: Johnson, David
name: Baldolini, Daniele
name: Hackermüller, Lucia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Vapour cell spectroscopy is an essential technique in many fields; in particular, nearly all atom and ion trapping experiments rely on simultaneous spectroscopy of two atomic transitions, traditionally employing separate apparatus for each transition. Here, we demonstrate simultaneous spectroscopy on two atomic transitions using spatially-overlapped beams from two independent lasers, within a single spectroscopic apparatus. We show that, in addition to aiding compactness, this approach offers superior performance, leading to sharper spectroscopy peaks and stronger absorption signals. Doppler-free locking features become visible over a frequency range several hundred MHz wider than for standard saturated absorption spectroscopy. By exploring the full, 2D parameter space associated with dual-frequency spectroscopy, we reveal a lattice-like structure of sharp resonance features in 2D frequency space, which enhances experimental versatility by allowing laser frequency stabilisation anywhere within a wide manifold of locations in 2D frequency space. The process of simultaneous frequency stabilisation of two lasers is analysed in detail, revealing that it can be expected to produce significant improvements in laser stability when compared to conventional, single-frequency spectroscopy.
description: 14 pages, 5 figures
Detecting Einstein-Podolsky-Rosen steering in non-Gaussian spin states from conditional spin-squeezing parameters
Creators: name: Guo, Jiajie
name: Sun, Feng-Xiao
name: Zhu, Daoquan
name: Gessner, Manuel
name: He, Qiongyi
name: Fadel, Matteo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an experimentally practical method to reveal Einstein-Podolsky-Rosen steering in non-Gaussian spin states by exploiting a connection to quantum metrology. Our criterion is based on the quantum Fisher information, and uses bounds derived from generalized spin-squeezing parameters that involve measurements of higher-order moments. This leads us to introduce the concept of conditional spin-squeezing parameters, which quantify the metrological advantage provided by conditional states, as well as detect the presence of an EPR paradox.
Integrated Expert Recommendation Model for Online Communities
Creators: name: El-korany, Abeer
Publisher: name: arXiv
Year: 2013
Subjects: subject: Social and Information Networks (cs.SI)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Online communities have become vital places for Web 2.0 users to share knowledge and experiences. Recently, finding expertise user in community has become an important research issue. This paper proposes a novel cascaded model for expert recommendation using aggregated knowledge extracted from enormous contents and social network features. Vector space model is used to compute the relevance of published content with respect to a specific query while PageRank algorithm is applied to rank candidate experts. The experimental results show that the proposed model is an effective recommendation which can guarantee that the most candidate experts are both highly relevant to the specific queries and highly influential in corresponding areas.
Price Formation in Agricultural PricesPrice Formation In Agricultural Prices
Creators: name: Fitria, Dina Nurul
name: Harianto
Publisher: name: figshare
Year: 2020
Subjects: subject: 150304 Entrepreneurship
subject: FOS: Economics and business
subject: 150309 Logistics and Supply Chain Management
subject: 150507 Pricing (incl. Consumer Value Estimation)
subject: 150307 Innovation and Technology Management

description: —Farmers as price takers face two uncertainties include price risk and efficient cost input. Both farmers and traders alike want to maximize profits with the production cost and minimum risk. This situation underlying the conceptual study of random effects on agricultural prices became attractive. Research finds out in farm gate price, the random effects of agricultural commodity prices determine the distribution of sales prices and input prices in the market structure with imperfect competition. This paper is structured as follows the price spread between farm and retail levels which is constituted by mark up or mark down pricing behaviour, namely as threshold behaviour with time lag t-1 and t-2 in red chilli comodity price, as a empiric case of study in West Java Province, Indonesia. Price incentive which comes up from price spread generates the new technology set farmers can adopt the new least cost technology. The price spread occurs in asymmetric way as threshold behaviour of random effects between farm gate price and retail price, established the incentive for farmers to seek new least cost technology.Farmers as price takers face two uncertainties include price risk and efficient cost input. Both farmers and traders alike want to maximize profits with the production cost and minimum risk. This situation underlying the conceptual study of random effects on agricultural prices became attractive. Research finds out in farm gate price, the random effects of agricultural commodity prices determine the distribution of sales prices and input prices in the market structure with imperfect competition. This paper is structured as follows the price spread between farm and retail levels which is constituted by mark up or mark down pricing behaviour, namely as threshold behaviour with time lag t-1 and t-2 in red chilli comodity price, as a empiric case of study in West Java Province, Indonesia. Price incentive which comes up from price spread generates the new technology set farmers can adopt the new least cost technology. The price spread occurs in asymmetric way as threshold behaviour of random effects between farm gate price and retail price, established the incentive for farmers to seek new least cost technology.
Canonical currents and heights for K3 surfaces
Creators: name: Filip, Simion
name: Tosatti, Valentino
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 37F80, 37P30, 32U40, 32Q20, 14J28, 14J50

description: We construct canonical positive currents and heights on the boundary of the ample cone of a K3 surface. These are equivariant for the automorphism group and fit together into a continuous family, defined over an enlarged boundary of the ample cone. Along the way, we construct preferred representatives for certain height functions and currents on elliptically fibered surfaces.
description: 70 pages, 3 figures; final version to appear in the Cambridge Journal of Mathematics
Filter convergence and decompositions for vector lattice-valued measures
Creators: name: Candeloro, Domenico
name: Sambucini, Anna Rita
Publisher: name: arXiv
Year: 2014
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 28B15, 28B05, 06A06, 54F05

description: Filter convergence of vector lattice-valued measures is considered, in order to deduce theorems of convergence for their decompositions. First the $σ$-additive case is studied, without particular assumptions on the filter; later the finitely additive case is faced, first assuming uniform $s$-boundedness (without restrictions on the filter), then relaxing this condition but imposing stronger properties on the filter. In order to obtain the last results, a Schur-type convergence theorem is used.
description: 18 pages
A novel, structure-preserving, second-order-in-time relaxation scheme for Schrödinger-Poisson systems
Creators: name: Athanassoulis, Agissilaos
name: Katsaounis, Theodoros
name: Kyza, Irene
name: Metcalfe, Stephen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We introduce a new structure preserving, second order in time relaxation-type scheme for approximating solutions of the Schrödinger-Poisson system. More specifically, we use the Crank-Nicolson scheme as a time stepping mechanism, whilst the nonlinearity is handled by means of a relaxation approach in the spirit of \cite{Besse, KK} for the nonlinear Schrödinger equation. For the spatial discretisation we use the standard conforming finite element scheme. The resulting scheme is explicit with respect to the nonlinearity, i.e. it requires the solution of a linear system for each time-step, and satisfies discrete versions of the system's mass conservation and energy balance laws for constant meshes. The scheme is seen to be second order in time. We conclude by presenting some numerical experiments, including an example from cosmology and an example with variable time-steps which demonstrate the effectiveness and robustness of the new scheme.
description: 19pages, 10 figures
Anomalous compressibility of ferropericlase throughout the iron spin crossover
Creators: name: Wentzcovitch, R. M.
name: Justo, J. F.
name: Wu, Z.
name: da Silva, C. R. S.
name: Yuen, D. A.
name: Kohlstedt, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The thermoelastic properties of ferropericlase Mg1-xFexO (x = 0.1875) throughout the iron high-to-low spin crossover have been investigated by first principles at Earth's lower mantle conditions. This crossover has important consequences for elasticity such as an anomalous bulk modulus (KS) reduction. At room temperature the anomaly is somewhat sharp in pressure but broadens with increasing temperature. Along a typical geotherm it occurs across most of the lower mantle with a more significant KS reduction around 1400-1600 km depth. This anomaly might also cause a reduction in the effective activation energy for viscous creep and lead to a viscosity minimum in the mid-lower mantle, in apparent agreement with results from inversion of data related with mantle convection and postglacial rebound.
description: 29 pages, 6 figures
Additional file 1 of Construction of synthetic anti-fouling consortia: fouling control effects and polysaccharide degradation mechanisms
Creators: name: Qi, Ji
name: Zhou, Qicheng
name: Huang, Danlei
name: Yu, Zhong
name: Meng, Fangang
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified

description: Supplementary Material 1
non-BPS walls of marginal stability
Creators: name: Bossard, Guillaume
name: Katmadas, Stefanos
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore the properties of non-BPS multi-centre extremal black holes in ungauged N=2 supergravity coupled to n_v vector multiplets, as described by solutions to the composite non-BPS linear system. After setting up an explicit description that allows for arbitrary non-BPS charges to be realised at each centre, we study the structure of the resulting solutions. Using these results, we prove that the binding energy of the composite is always positive and we show explicitly the existence of walls of marginal stability for generic choices of charges. The two-centre solutions only exist on a hypersurface of dimension n_v+1 in moduli space, with an n_v-dimensional boundary, where the distance between the centres diverges and the binding energy vanishes.
description: 54 pages, 1 figure
title: Lucifer parlamentaris; [1848]
title: (13. November)
titleType: Subtitle
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Vorlageform der Veröffentlichungsangabe: Lith Anst v Ed Gust May in Frankfurt aM
Das Kirchenwesen in der Reichsstadt Regensburg und seine Bedeutung für den Donauraum
Creators: name: Maurer, Wilhelm
Publisher: name: Lutherische Kirche in der Welt
Year: 1970

description: Lutherische Kirche in der Welt, Bd. 16 (1969): Jahrbuch des Martin-Luther-Bundes, Band 16