cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A METHODOLOGICAL BASIS FOR THE EVALUATION OF MARKETING LOSSES OF FOODS IN DEVELOPING COUNTRIES
Creators: name: Silva, Carlos Arthur Barbosa Da
name: Silva, Carlos Arthur Barbosa Da
Publisher: name: Unknown
Year: 1979
Subjects: subject: Marketing
subject: FOS: Economics and business

description: The shortage of food for a substantial proportion of the world's population is a problem which has been challenging our society for a long time. In the 1972-1974 period an estimated 1.3 billion people subsisted in less developed countries with dietary energy supplies under the minimum nutritional requirements, and the current outlook is for a widening gap between needs and food supplies. Although progress has been made in production oriented research, such as the development of high yielding crop varieties and of better way to control pests and diseases, there is still a need for additional means to increase the world food supply. The objectives of this paper are as follows: 1) to define the problems and its relevance for developing countries; 2) to identify the current lines of research in the problem area; 3) to review the relevant literature on the methodological aspects of loss assessment studies; and 4) to outline the basic elements to be considered in the design of food loss assessment surveys as an initial step in the establishment of loss reduction programs.
A Unified Quantum SO(3) Invariant for Rational Homology 3-Spheres
Creators: name: Beliakova, Anna
name: Buehler, Irmgard
name: Le, Thang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 57N10, 57M25

description: Given a rational homology 3-sphere M with the first integral homology of rank b and a link L inside M, colored by odd numbers, we construct a unified invariant I_{M,L} belonging to a modification of the Habiro ring where b is inverted. Our unified invariant dominates the whole set of the SO(3) Witten-Reshetikhin-Turaev invariants of the pair (M,L). If b=1 and L is empty, I_M coincides with Habiro's invariant of integral homology 3-spheres. For b>1, the unified invariant defined by the third author is determined by I_M. One of the applications are the new Ohtsuki series (perturbative expansions of I_M at roots of unity) dominating all quantum SO(3) invariants.
description: 31 pages, 18 Figures; Appendix substantially revised
Incremental Computation: What Is the Essence?
Creators: name: Liu, Yanhong A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Incremental computation aims to compute more efficiently on changed input by reusing previously computed results. We give a high-level overview of works on incremental computation, and highlight the essence underlying all of them, which we call incrementalization -- the discrete counterpart of differentiation in calculus. We review the gist of a systematic method for incrementalization, and a systematic method centered around it, called Iterate-Incrementalize-Implement, for program design and optimization, as well as algorithm design and optimization. At a meta-level, with historical contexts and for future directions, we stress the power of high-level data, control, and module abstractions in developing new and better algorithms and programs as well as their precise complexities.
A Parallel Unification Coprocessor
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 80302 Computer System Architecture
subject: FOS: Computer and information sciences

description: Unification is a pattern matching operation vert frequently used in Artificial Intelligence. Logic and PROLOG interpreters and theorem provers heavily rely on unification. Since its beginning, unification has suffered from a slow execution. The execution time of logic programs and other programs based on unification can be significantly reduced by improving the performance of the unification operation. In this paper, we introduce a parallel unification coprocessor for speeding up the unification algorithm. The machine is simulated at the register transfer level and the simulation results as well as performance comparisons with two serial unification coprocessors are presented.
Colored Noise in Quantum Chaos
Creators: name: Salasnich, Luca
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We derive a set of spectral statistics whose power spectrum is characterized, in the case of chaotic quantum systems, by colored noise $1/f^γ$, where the integer parameter $γ$ critically depends on the specific energy-level statistic considered. In the case of regular quantum systems these spectral statistics show $1/f^{γ+1}$ noise.
description: 3 pages, 2 figures, accepted for publication in Phys. Rev. E
An Approach to Solve the Cache Thrashing Problem
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 80302 Computer System Architecture
subject: FOS: Computer and information sciences

description: Cache or local memory thrashing problem arises very often in parallel processing architectures where each processor has its local cache or memory and a write-back protocol is employed for cache coherence. To solve the problem that large amount of data moving back and forth between the caches or local memories in different processors, techniques associated with parallel compiler need to be developed. Based on the relations between array element accesses and enclosed loop indices in a nested parallel construct, we present in this paper some approach to reduce the data movement between the caches or local memories for parallel programs. By analyzing the array subscript expressions, the compilers let the processor execute the corresponding iterations of parallel loops in terms of the data in its cache ort local memory at execution time. It benefits the, particularly, the parallel programs in which a parallel loop is enclosed by a sequential loop and array elements are repeatedly used in different iterations of the parallel loop.
Irreducible modules of modular Lie superalgebras and super version of the first Kac-Weisfeiler conjecture
Creators: name: Shu, Bin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B50, 17B20, 17B30

description: Suppose $g=g_0+g_1$ is a finite-dimensional restricted Lie superalgebra over an algebraically closed field $k$ of characteristic $p>2$. In this article, we propose a conjecture for maximal dimensions of irreducible modules over the universal enveloping algebra $U(g)$ of $g$, as a super generalization of the celebrated first Kac-Weisfeiler conjecture. It is demonstrated that the conjecture holds for all basic classical Lie superalgebras and all completely solvable restricted Lie superalgebras. In this process, we investigate irreducible representations of solvable Lie superalgebras.
description: In this version, an improper statement in Theorem 4.7 is revised, which is for general solvable Lie superalgebras in odd characteristic
The Event Horizon of The Schwarzschild Black Hole in Noncommutative Spaces
Creators: name: Nasseri, Forough
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The event horizon of Schwarzschild black hole is obtained in noncommutative spaces up to the second order of perturbative calculations. Because this type of black hole is non-rotating, to the first order there is no any effect on the event horizon due to the noncommutativity of space. A lower limit for the noncommutativity parameter is also obtained. As a result, the event horizon in noncommutative spaces is less than the event horizon in commutative spaces.
description: 6 pages, accepted for publication in Int.J.Mod.Phys.D
Nonreciprocal Multi-mode and Indirect Couplings in Cavity Magnonics
Creators: name: Zhang, Chi
name: Jia, Chenglong
name: Shi, Yongzhang
name: Jiang, Changjun
name: Xue, Desheng
name: Ong, C. K.
name: Chai, Guozhi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the magnon-photon couplings by employing a small magnet within an irregular resonant cavity, which leads to a desirable nonreciprocity with a big isolation ratio. Moreover, the higher-order couplings between the spin wave modes with the polarized photon modes also exhibit the nonreciprocity. These couplings between polarized photon and spin waves could be regarded as an indirect multi-modes coupling between the ferromagnetic resonance (FMR) mode and spin wave mode magnons mediated by the cavity mode photons. We also derive a coupling matrix to predict the characteristics of this kind of indirect coupling. The existence of the indirect couplings broaden the field range of the nonreciprocity of the system. The achieved nonreciprocal multi-mode magnon-photon couplings in a single system offer a feasible method to improve the signal transmission quality.
description: 7 pages, 6 figures
AN ANALYSIS OF THE CONDITIONAL LAND TRANSFER PROGRAM AS A POLICY TOOL FOR ECONOMIC DEVELOPMENT IN MICHIGAN
Creators: name: Quinones, Alexander Rafael
name: Quinones, Alexander Rafael
Publisher: name: Unknown
Year: 1999
Subjects: Community/Rural/Urban Development
Land Economics/Use

description: The Conditional Land Transfer Agreement Act, P.A. 425, 1984 (MCLA 124.21-124.29) is a public policy tool designed to promote community economic development and minimize the use of annexation in Michigan. Academic research to evaluate the impact of P.A. 425 on communities executing such contracts had not been conducted. Therefore, the question of whether the Act had accomplished its intended objectives remained unanswered. Data were collected from 26 units of governments that executed P.A. 425 agreements since 1984. The methods used to gather information in the research were mail surveys and phone interviews. Descriptive statistics were used as the main tool of analysis in this research. The results obtained indicate that infrastructure is a precondition for economic development to occur. However, the analysis of the data also indicates that once infrastructure is built, economic development does not necessarily follow.
Effects of Chromatic Dispersion on Single-Photon Temporal Wave Functions in Quantum Communications
Creators: name: Czerwinski, Artur
name: Cai, Xiangji
name: Haddadi, Saeed
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this study, we investigate the effects of chromatic dispersion on single-photon temporal wave functions (TWFs) in the context of quantum communications. Departing from classical beam analysis, we focus on the temporal shape of single photons, specifically exploring generalized Gaussian modes. From this foundation, we introduce chirped and unchirped Gaussian TWFs, demonstrating the impact of the chirp parameter in mitigating chromatic dispersion effects. Furthermore, we extend our investigation to time-bin qubits, a topic of ongoing research relevance. By exploring the interplay of dispersion effects on qubit interference patterns, we contribute essential insights to quantum information processing. This comprehensive analysis considers various parameters, introducing a level of complexity not previously explored in the context of dispersion management. We demonstrate the relationships between different quantities and their impact on the spreading of TWFs. Our results not only deepen the theoretical understanding of single-photon TWFs but also offer practical guidelines for system designers to optimize symbol rates in quantum communications.
Nebular Spectra of SN 1998bw Revisited: Detailed Study by One and Two Dimensional Models
Creators: name: Maeda, K.
name: Nomoto, K.
name: Mazzali, P. A.
name: Deng, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Refined one- and two-dimensional models for the nebular spectra of the hyper-energetic Type Ic supernova (SN) 1998bw, associated with the gamma-ray burst GRB980425, from 125 to 376 days after B-band maximum are presented. One dimensional, spherically symmetric spectrum synthesis calculations show that reproducing features in the observed spectra, i.e., the sharply peaked [OI] 6300Ådoublet and MgI] 4570Åemission, and the broad [FeII] blend around 5200Å, requires the existence of a high-density O-rich core expanding at low velocities ($\lsim 8,000$ km s$^{-1}$) and of Fe-rich material moving faster than the O-rich material. Synthetic spectra at late phases from aspherical (bipolar) explosion models are also computed with a two-dimensional spectrum synthesis code. The above features are naturally explained by the aspherical model if the explosion is viewed from a direction close to the axis of symmetry ($\sim 30^{\rm o}$), since the aspherical model yields a high-density O-rich region confined along the equatorial axis. By examining a large parameter space (in energy and mass), our best model gives following physical quantities: the kinetic energy $E_{51} \equiv E_{\rm K}/10^{51}$ ergs $\gsim 8 - 12$ and the main-sequence mass of the progenitor star $M_{\rm ms} \gsim 30 - 35 \Msun$. The temporal spectral evolution of SN 1998bw also indicates mixing among Fe-, O-, and C-rich regions, and highly clumpy structure.
description: 38 pages, 22 figures. ApJ, 640 (01 April 2006 issue), in press
FORECASTING AGRICULTURAL COMMODITY PRICES WITH LIMITED DATA SETS
Creators: name: Jacque, Andrew Eliel
name: Jacque, Andrew Eliel
Publisher: name: Unknown
Year: 1991
Subjects: Demand and Price Analysis

description: Many developing countries wish to, but do not publish forecasts of commodity prices. One difficulty often cited is the length (shortness) of the data series. This study tried to determine whether this was a valid reason. Price data for two commodities in a specific country, where the problem is acknowledged were utilized in a case study approach. Existing models were evaluated for applicability to the data series. The identified models were estimated with estimation data and then while keeping the model parameters constant, prices were forecasted in the out-of-sample period. The error associated with the forecast of each model was calculated and the relationship between quantity of data and model accuracy evaluated. The error values of all the models were high. The results of the analyses were inconclusive in terms of the study objectives.
Probing dark energy with tomographic weak-lensing aperture mass statistics
Creators: name: Martinet, Nicolas
name: Harnois-Déraps, Joachim
name: Jullo, Eric
name: Schneider, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We forecast and optimize the cosmological power of various weak-lensing aperture mass ($M_{\rm ap}$) map statistics for future cosmic shear surveys, including peaks, voids, and the full distribution of pixels (1D $M_{\rm ap}$). These alternative methods probe the non-Gaussian regime of the matter distribution, adding complementary cosmological information to the classical two-point estimators. Based on the SLICS and cosmo-SLICS $N$-body simulations, we build Euclid-like mocks to explore the $S_8 - Ω_{\rm m} - w_0$ parameter space. We develop a new tomographic formalism which exploits the cross-information between redshift slices (cross-$M_{\rm ap}$) in addition to the information from individual slices (auto-$M_{\rm ap}$) probed in the standard approach. Our auto-$M_{\rm ap}$ forecast precision is in good agreement with the recent literature on weak-lensing peak statistics, and is improved by $\sim 50$% when including cross-$M_{\rm ap}$. It is further boosted by the use of 1D $M_{\rm ap}$ that outperforms all other estimators, including the shear two-point correlation function ($γ$-2PCF). When considering all tomographic terms, our uncertainty range on the structure growth parameter $S_8$ is enhanced by $\sim 45$% (almost twice better) when combining 1D $M_{\rm ap}$ and the $γ$-2PCF compared to the $γ$-2PCF alone. We additionally measure the first combined forecasts on the dark energy equation of state $w_0$, finding a factor of three reduction of the statistical error compared to the $γ$-2PCF alone. This demonstrates that the complementary cosmological information explored by non-Gaussian $M_{\rm ap}$ map statistics not only offers the potential to improve the constraints on the recent $σ_8$ - $Ω_{\rm m}$ tension, but also constitutes an avenue to understand the accelerated expansion of our Universe.
description: Matching version accepted by A&A, 18 pages, 12 figures
Statutory Rewards to Environmental Self-Auditing: Do They Reduce Pollution and Save Regulatory Costs? Evidence from a Cross-State Panel
Creators: name: Guerrero, Santiago
name: Innes, Robert
name: Guerrero, Santiago
name: Innes, Robert
Publisher: name: Unknown
Year: 2008
Subjects: Environmental Economics and Policy

description: State-level statutes provide firms that engage in environmental self-audits, and that self-report their environmental violations, with a variety of different regulatory rewards, including "immunity" from penalties and "privilege" for information contained in self-audits. This paper studies a panel of State-level industries from 1989-2003, in order to determine the effects of the different statutes on toxic pollution and government inspections. We find that, by encouraging self-auditing, privilege and limited immunity protections tend to reduce pollution and government enforcement activity; however, more sweeping immunity protections, by reducing firms' pollution prevention incentives, raise toxic pollution and government inspection oversight.
Two-dimensional structure in a generic model of triangular proteins and protein trimers
Creators: name: Camp, Philip J.
name: Duncan, Peter D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Motivated by the diversity and complexity of two-dimensional crystals formed by triangular proteins and protein trimers, we have investigated the structures and phase behavior of hard-disk trimers. In order to mimic specific binding interactions, each trimer possesses on `attractive' disk which can interact with similar disks on other trimers via an attractive square-well potential. At low density and low temperature, the fluid phase mainly consists of tetramers, pentamers, or hexamers. Hexamers provide the structural motif for a high-density, low-temperature periodic solid phase, but we also identify a metastable periodic structure based on a tetramer motif. At high density there is a transition between orientationally ordered and disordered solid phases. The connections between simulated structures and those of 2D protein crystals -- as seen in electron microscopy -- are briefly discussed.
description: 7 pages, 6 figures
Electronic Structure Calculations using Dynamical Mean Field Theory
Creators: name: Held, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The calculation of electronic properties of materials is an important task of solid state theory, albeit particularly difficult if electronic correlations are strong, for example in transition metals, their oxides and in f-electron systems. The standard approach to material calculations, the density functional theory in its local density approximation (LDA), incorporates electronic correlations only very rudimentarily and fails if the correlations are strong. Encouraged by the success of dynamical mean field theory (DMFT) in dealing with strongly correlated model Hamiltonians, physicists from the bandstructure and the many-body community have joined forces and developed a combined LDA+DMFT method recently. Depending on the strength of electronic correlations, this new approach yields a weakly correlated metal as in LDA, a strongly correlated metal, or a Mott insulator. By now, this approach is widely regarded as a breakthrough for electronic structure calculations of strongly correlated materials. The author will review this LDA+DMFT method and also discuss alternative approaches to employ DMFT in electronic structure calculations, for example, by replacing the LDA part by the so-called GW approximation. Different methods to solve the DMFT equations are introduced with a focus on those that are suitable for realistic calculations with many orbitals. An overview of the successful application of LDA+DMFT to a wide variety of materials, ranging from Pu and Ce, to Fe and Ni, to numerous transition metal oxides, is given.
description: The second version is the one published in Advances in Physics, a major overhaul from the first version (the author's habilitation thesis at Stuttgart University, 2004). 123 pages, 56 figures arranged in 39 captions, 505 references
Nutritional management of stress in poultry
Creators: name: D. Thakur, K . Sethy*, V.T. Andhale
Publisher: name: The Science world a Monthly e magazine
Year: 2024

description: Any deviation from optimum state could be referred as stress. Every living being has to pass through one or other type of stresses in life. Most of the farm animals including poultry suffer from various types of stresses like adverse environment, managemental, diseases, nutritional deficiencies, transportation etc. There is various factors lead to varieties of stresses affecting the welfare of Poultry and the thermal stress is the major environmental stress. Every livestock has a thermo neutral zone where the animal/bird performs optimum. For broiler the ideal temperature is 10-22 0c and for layer 10-30 0c. Birds being endotherm regulate their body temperature close to set point by controlling either heat production or heat loss independently of the ambient temperature within the zone of neutrality. When the environmental temperature goes beyond the critical temperature it is called as heat stress in a tropical country like India. When the temperature is coupled with humid condition is the most adverse stressful and detrimental condition for poultry.
Three-dimensional dynamics of a pair of deformable bubbles rising initially in line. Part 1: Moderately inertial regimes
Creators: name: Zhang, Jie
name: Ni, Ming-Jiu
name: Magnaudet, Jacques
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The buoyancy-driven motion of two identical gas bubbles released in line in a liquid at rest is examined with the help of highly resolved simulations, focusing on moderately inertial regimes in which the path of an isolated bubble is vertical. Assuming first an axisymmetric evolution, equilibrium configurations of the bubble pair are determined as a function of the buoyancy-to-viscous and buoyancy-to-capillary force ratios which define the Galilei ($Ga$) and Bond ($Bo$) numbers of the system, respectively. The three-dimensional solutions reveal that this axisymmetric equilibrium is actually never reached. Instead, provided $Bo$ stands below a critical $Ga$-dependent threshold determining the onset of coalescence, two markedly different evolutions are observed. At the lower end of the explored $(Ga,\,Bo)$-range, the tandem follows a Drafting-Kissing-Tumbling scenario which eventually yields a planar side-by-side motion. For larger $Ga$, the trailing bubble drifts laterally and gets out of the wake of the leading bubble, barely altering the path of the latter. In this second scenario, the late configuration is characterized by a significant inclination of the tandem ranging from $30^\circ$ to $40^\circ$ with respect to the vertical. Bubble deformation has a major influence on the evolution of the system. It controls the magnitude of vortical effects in the wake of the leading bubble, hence the strength of the attractive force acting on the trailing bubble. It also governs the strength and even the sign of the lateral force acting on this bubble, a mechanism of particular importance when the tandem is released with a small angular deviation.
description: 44 pages, 27 figures
Euler-Poisson Equations and Integrable Cases
Creators: name: Borisov, A. V.
name: Mamaev, I. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we propose a new approach to the study of integrable cases based on intensive computer methods' application. We make a new investigation of Kovalevskaya and Goryachev-Chaplygin cases of Euler-Poisson equations and obtain many new results in rigid body dynamics in absolute space. Also we present the visualization of some special particular solutions.
description: 24 pages, 27 figures
BNB Self-Routing Permutation Network
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 100503 Computer Communications Networks
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A self-routing permutation network capable of routing all n! permutations of its n inputs to is n outputs is presented. The network implements the binary radix sorting on the structure of the generalized baseline network, a modified model of the original baseline network. The network has O(N log3 N) hardware complexity and O (log3 N) delay time for N-inputs. The network makes use of the localized bit information instead of the global information in routing procedure. This strategy leads to the reduction of both the hardware and the delay time compared with the other comparable networks. The resulting hardware is simple, and has a good regularity.
Phrasebook editing: "occupation" through "family"
Creators: name: Lekka, Mina
name: Rudolph, Johnny (Soni)
name: Rudolph, Ruth (Analidele)
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: nkr

description: One .wav audio file for an elicitation to edit a Nukuoro phrasebook. Corresponds to pages 194-195 in Notebook 2.
Exit problems related to the persistence of solitons for the Korteweg-de Vries equation with small noise
Creators: name: De Bouard, Anne
name: Gautier, Eric
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q53, 60F10, 60H15, 76B25, 76B35

description: We consider two exit problems for the Korteweg-de Vries equation perturbed by an additive white in time and colored in space noise of amplitude a. The initial datum gives rise to a soliton when a=0. It has been proved recently that the solution remains in a neighborhood of a randomly modulated soliton for times at least of the order of a^{-2}. We prove exponential upper and lower bounds for the small noise limit of the probability that the exit time from a neighborhood of this randomly modulated soliton is less than T, of the same order in a and T. We obtain that the time scale is exactly the right one. We also study the similar probability for the exit from a neighborhood of the deterministic soliton solution. We are able to quantify the gain of eliminating the secular modes to better describe the persistence of the soliton.
General Purpose Technology, Revolutionary Technology, and Technological Maturity
Creators: name: Ruttan, Vernon W.
name: Ruttan, Vernon W.
Publisher: name: Unknown
Year: 2008
Subjects: Research and Development/Tech Change/Emerging Technologies

description: An important inference of the theoretical literature on the development of general purpose technologies is that public investment in their development is necessary if economic growth is to be sustained. The theoretical results are broadly consistent with the empirical generalization that the public sector, particularly military and defense related research, technology development and procurement, has played an important role in the development of most of the general purpose technologies in which the United States is presently globally competitive. These sources are, however, unlikely to play such an important role in the development of new general purpose technologies in the immediate future. Nor is the private sector, burdened by impatient capital, likely to become an important source of new general purpose technology.
Anisotropic mass ejection in binary mergers
Creators: name: Morris, T.
name: Podsiadlowski, Ph.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the mass loss from a rotationally distorted envelope following the early, rapid in-spiral of a companion star inside a common envelope. For initially wide, massive binaries (M_1+M_2=20M_{\odot}, P\sim 10 yr), the primary has a convective envelope at the onset of mass transfer and is able to store much of the available orbital angular momentum in its expanded envelope. Three-dimensional smoothed particle hydrodynamics calculations show that mass loss is enhanced at mid-latitudes due to shock reflection from a torus-shaped outer envelope. Mass ejection in the equatorial plane is completely suppressed if the shock wave is too weak to penetrate the outer envelope in the equatorial direction (typically when the energy deposited in the star is less than about one-third of the binding energy of the envelope). We present a parameter study to show how the geometry of the ejecta depends on the angular momentum and the energy deposited in the envelope during a merging event. Applications to the nearly axisymmetric, but very non-spherical nebulae around SN1987A and Sheridan 25 are discussed, as well as possible links to RY Scuti and the Small Magellanic Cloud object R4.
description: 10 pages, 11 figures, accepted for publication in MNRAS. Figs 1, 2 and 10 reduced in size
6G Vision: An Ultra-Flexible Perspective
Creators: name: Yazar, Ahmet
name: Doğan-Tusha, Seda
name: Arslan, Hüseyin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The upcoming sixth generation (6G) communications systems are expected to support an unprecedented variety of applications, pervading every aspect of human life. It is clearly not possible to fulfill the service requirements without actualizing a plethora of flexible options pertaining to the key enabler technologies themselves. At that point, this work presents an overview of the potential 6G key enablers from the flexibility perspective, categorizes them, and provides a general framework to incorporate them in the future networks. Furthermore, the role of artificial intelligence and integrated sensing and communications as key enablers of the presented framework is also discussed.
Gated InAs quantum dots embedded in surface acoustic wave cavities for low-noise optomechanics
Creators: name: Wang, Zixuan
name: DeCrescent, Ryan A.
name: Imany, Poolad
name: Bush, Joey T.
name: Reddy, Dileep V.
name: Nam, Sae Woo
name: Mirin, Richard P.
name: Silverman, Kevin L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Self-assembled InAs quantum dots (QDs) are promising optomechanical elements due to their excellent photonic properties and sensitivity to local strain fields. Microwave-frequency modulation of photons scattered from these efficient quantum emitters has been recently demonstrated using surface acoustic wave (SAW) cavities. However, for optimal performance, a gate structure is required to deterministically control the charge state and reduce charge noise of the QDs. Here, we integrate gated QDs and SAW cavities using molecular beam epitaxy and nanofabrication. We demonstrate that with careful design of the substrate layer structure, integration of the two systems can be accomplished while retaining the optimal performance of each subsystem. These results mark a critical step toward efficient and low-noise optomechanical systems for microwave-to-optical quantum transduction.
Parallel Polygonal Approximation by the Width of the Set
Creators: name: Lu, Mi
Publisher: name: figshare
Year: 2021
Subjects: subject: 10399 Numerical and Computational Mathematics not elsewhere classified
subject: FOS: Mathematics

description: Regression lines are often requested in statistics by which the digitized curves or the shape of contours are approximated. Applying geometric techniques, we present in this paper a parallel algorithm to find the polygonal approximation based on the minmax approximated line and the width of the set. Our algorithm is efficient due to the geometric transformation, and it has O(log n) time performance on a CREW PRAM machine with n processors. Simulations have been carried out and the results show that the minimax approximated lines satisfy the 99% confidence interval. Then described method can be used to fast approximate the regression line and serve to provide a preliminary statistical estimate for the given data which allows more accurate interference to be made.
NOAO Fundamental Plane Survey -- II. Age and Metallicity along the Red Sequence
Creators: name: Nelan, Jenica E.
name: Smith, Russell J.
name: Hudson, Michael J.
name: Wegner, Gary A.
name: Lucey, John R.
name: Moore, Stephen A. W.
name: Quinney, Stephen J.
name: Suntzeff, Nicholas B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present spectroscopic linestrength data for 4097 red-sequence galaxies in 93 low-redshift galaxy clusters, and use these to investigate variations in average stellar populations as a function of galaxy mass. Our analysis includes an improved treatment of nebular emission contamination, which affects ~10% of the sample galaxies. Using the stellar population models of D. Thomas and collaborators, we simultaneously fit twelve observed linestrength-sigma relations in terms of common underlying trends of age, [Z/H] (total metallicity) and a/Fe (alpha-element enhancement). We find that the observed linestrength-sigma relations can be explained only if higher-mass red-sequence galaxies are, on average, older, more metal rich, and more alpha-enhanced than lower-mass galaxies. Quantitatively, the scaling relations are age=sigma^(0.59+/-0.13), Z/H=sigma^(0.53+/-0.08) and a/Fe=sigma^(0.31+/-0.06), where the errors reflect the range obtained using different subsets of indices. We conclude that although the stars in giant red galaxies in clusters formed early, most of the galaxies at the faint end joined the red sequence only at recent epochs. This "down-sizing" trend is in good qualitative agreement with observations of the red sequence at higher redshifts, but is not predicted by semi-analytic models of galaxy formation.
description: 21 pages, 14 figures, accepted for publication in the Astrophysical Journal
Data-based Model Identification of the Hypothalamus-Pituitary-Thyroid Complex
Creators: name: Horvath, Clara
name: Körner, Andreas
name: Modiz, Corinna
Publisher: name: arXiv
Year: 2023
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: Dynamical Systems (math.DS)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: The thyroid gland, in conjunction with the pituitary and the hypothalamus, forms a regulated system due to their mutual influence through released hormones. The equilibrium point of this system, commonly referred to as the "set point", is individually determined. This means that determining the correct amount of medication to be administered to patients with hypothyroidism requires several treatment appointments creating an extended treatment process. Because the dynamics of the system have not yet been fully explored, mathematical models are needed to simulate the mutual influence of the respective hormones as well as their course over time. These models enable a deeper understanding of the functionality in the context of data measurements. Therefore, two existing time-dependent mathematical models are used and further analyzed to replicate this overall influence of disparate systems. Both are based on a system of two differential equations modelling the interacting hormones. The parameters of the two models are identified according to different calibration approaches by means of patient data collected in a retrospective study in collaboration with the Medical University of Vienna. The hormonal course in the time domain as well as equilibrium curves including the set-point are then simulated and analyzed with respect to the normalized mean squared error. These calibrated systems allow a more profound insight into the functionality of the formed complex.
description: 15 pages, 6 figures, included in abstract volume of the 11th EUROSIM Congress on Modelling and Simulation
Micropillar compression of single crystal tungsten carbide, Part 1: temperature and orientation dependence of deformation behaviour
Creators: name: Jones, Helen
name: Tong, Vivian
name: Ramachandramoorthy, Rajaprakash
name: Mingard, Ken
name: Michler, Johann
name: Gee, Mark
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Tungsten carbide cobalt hardmetals are commonly used as cutting tools subject to high operation temperature and pressures, where the mechanical performance of the tungsten carbide phase affects the wear and lifetime of the material. In this study, the mechanical behaviour of the isolated tungsten carbide (WC) phase was investigated using single crystal micropillar compression. Micropillars in two crystal orientations, 1-5 $μ$m in diameter, were fabricated using focused ion beam (FIB) machining and subsequently compressed between room temperature and 600 °C. The activated plastic deformation mechanisms were strongly anisotropic and weakly temperature dependent. The flow stresses of basal-oriented pillars were about three times higher than the prismatic pillars, and pillars of both orientations soften slightly with increasing temperature. The basal pillars tended to deform by either unstable cracking or unstable yield, whereas the prismatic pillars deformed by slip-mediated cracking. However, the active deformation mechanisms were also sensitive to pillar size and shape. Slip trace analysis of the deformed pillars showed that {10-10} prismatic planes were the dominant slip plane in WC. Basal slip was also activated as a secondary slip system at high temperatures.
description: accepted version - International Journal of Refractory Metals and Hard Materials (2021)
Optimal Corridor Design for Grizzly Bear in the U.S. Northern Rockies
Creators: name: Suter, Jordan F.
name: Conrad, Jon M.
name: Gomes, Carla P.
name: Van Hoeve, Willem Jan
name: Sabharwal, Ashish
name: Suter, Jordan F.
name: Conrad, Jon M.
name: Gomes, Carla P.
name: Van Hoeve, Willem Jan
name: Sabharwal, Ashish
Publisher: name: Unknown
Year: 2008
Subjects: Environmental Economics and Policy

description: In an attempt to address the negative ecological impacts of habitat fragmentation, wildlife corridors have been proposed as a way to connect areas of biological significance. In this paper, a model to maximize the amount of suitable wildlife habitat in a fully connected parcel network linking core habitat areas subject to a budget constraint is introduced. The standard economic framework of maximizing habitat benefits subject to a budget constraint that we employ in this paper is a divergence from other recently proposed models that focus only on minimizing the cost of a single parcel-wide corridor. While the budget constrained optimization model that we introduce is intuitively appealing, it presents substantial computational challenges above determining the cost-minimizing corridor. The optimization model is applied to the design of a wildlife corridor for grizzly bears in the U.S. Northern Rockies and is shown to drastically increase the aggregate habitat suitability of the corridor over parcel selection based on cost minimization alone. The relative tradeoffs between corridor cost and habitat suitability are illustrated through the construction of an efficiency frontier and, for cases where optimization is computationally impractical, a heuristic is suggested that closely approximates the optimally selected corridor.
การประเมินเพื่อพัฒนาอัตลักษณ์ของสถานศึกษา
Creators: name: พิชิต ฤทธิ์จรูญ
Publisher: name: สถาบันการจัดการปัญญาภิวัฒน์
Year: 2558
Subjects: อัตลักษณ์ของสถานศึกษา, การประเมินอัตลักษณ์, การพัฒนาอัตลักษณ์

description: 3, 7, วารสารปัญญาภิวัฒน์
Determining Consumer Perceptions of and Willingness to Pay or Appalachian Grass-fed Beef: An Experimental Economics Approach
Creators: name: Evans, Jason R.
name: Brown, Cheryl
name: Collins, Alan R.
name: D'Souza, Gerard E.
name: Rayburn, Edward B.
name: Sperow, Mark
name: Evans, Jason R.
name: Brown, Cheryl
name: Collins, Alan R.
name: D'Souza, Gerard E.
name: Rayburn, Edward B.
name: Sperow, Mark
Publisher: name: Unknown
Year: 2008
Subjects: Demand and Price Analysis
Livestock Production/Industries

description: The U.S. market for commoditized beef is a dynamic one that has, over the last 30 years, seen decreases in per capita consumption and an increased reliance on large, integrated feedlot facilities that focus on efficient weight gain and producing carcasses deemed desirable according the USDA quality grading system. Because of the problems inherent in the conventional production system and the existence of farm-to-retail price spreads that do not favor primary cow-calf producers, analyses of alternative beef production and marketing strategies that facilitate enhanced profitability and simultaneously address surging consumer demand for specialty food products are necessary. To that end, focus of the current study was on the market potential for grass-fed beef products in the Appalachian region, given that these products embody observed, experience, nutritional, and process attributes that may appeal to a large consumer base. Specifically, a variant of the Becker-DeGroot-Marschack experimental auction mechanism was employed in grocery stores in Morgantown, WV and Pittsburgh, PA in order to determine consumer preferences and willingness to pay for grass-fed steak and ground beef products. A majority of beef consumers sampled preferred the grass-fed products in both steak and ground beef experiments and were willing to pay a price premium in order to obtain them. It was concluded that consumers would respond positively to the availability of these products in the retail sector, based largely on their superior nutritional content and core observed attributes.
Holographic Reflected Entropy and Islands in Interface CFTs
Creators: name: Basak, Jaydeep Kumar
name: Basu, Debarshi
name: Malvimat, Vinay
name: Parihar, Himanshu
name: Sengupta, Gautam
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the reflected entropy for various mixed state configurations in the two dimensional holographic conformal field theories sharing a common interface (ICFTs). In the AdS$_3$/ICFT$_2$ framework, we compute the holographic reflected entropy for the required configurations in the vacuum state of the ICFT$_{\text{2}}$ which is given by twice the entanglement wedge cross section (EWCS) in a spacetime involving two AdS$_3$ geometries glued along a thin interface brane. Subsequently, we evaluate the EWCS in the bulk geometry involving eternal BTZ black strings with an AdS$_2$ interface brane, which is dual to an ICFT$_2$ in the thermofield double (TFD) state. We explore the system from a doubly holographic perspective and determine the island contributions to the reflected entropy in the two dimensional semi-classical description involving two CFT$_{\text{2}}$s coupled to an AdS$_2$ brane. We demonstrate that the results from the island formula match precisely with the bulk AdS$_3$ results in the large tension limit of the interface brane. We illustrate that the phase structure of the reflected entropy is quite rich involving many novel induced island phases and demonstrate that it obeys the expected Page curve for the reflected entropy in a radiation bath coupled to the AdS$_2$ black hole.
description: 68 pages, 28 figures
Resolution of the incongruency of dipole asymmetries within various large radio surveys -- implications for the Cosmological Principle
Creators: name: Singal, Ashok K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate dipole asymmetries in four large radio surveys, each spanning more than 80\% of the sky. Two of them, the Very Large Array Sky Survey (VLASS) and the Rapid ASKAP Continuum Survey (RACS), have recently yielded dipoles that appear incongruent with each other as well as seem inconsistent with previous radio survey dipoles and the Cosmic Microwave Background (CMB) dipole. Because these radio surveys have large overlaps in sky coverage, comprising hence large majority of common radio sources, one would not expect significant differences between their radio dipoles, irrespective of their underlying source of origin. We examine here in detail these radio dipoles, to ascertain the source of incongruency amongst them. We find the VLASS and RACS data to be containing some declination-dependent systematics, seemingly in the vicinity of the declination limit of each survey. We show that the effects of such systematics can be mitigated by restricting the declination limits of the respective survey during the dipole determination. A weighted mean of the sky coordinates of thus derived dipoles from the four radio surveys lies within $1.2σ$ of the CMB dipole direction. However, the amplitude appears significantly larger, $3.7\pm 0.6$ times or more than the CMB dipole. This puts in doubt not only the conventional wisdom that the genesis of all these dipoles, including that of the CMB dipole, is due to the Solar peculiar motion, it also raises uncomfortable questions about the Cosmological Principle (CP), the basis of the standard $Λ$CDM cosmological model.
description: 15 pages, 8 figures, 7 tables, accepted in MNRAS
Water supply options for the East Bay municipal utility district : a critical analysis
Creators: name: Fisher, Anthony C.
name: Fisher, Anthony C.
Publisher: name: Unknown
Year: 1988
Subjects: Resource /Energy Economics and Policy

description: The two main objectives of the East Bay Municipal Utility District (EBMUD) water supply management program are to cope with a failure of the aqueducts in the Delta due to earthquake and flood damage and to mitigate periodic shortages. EBMUD emphasizes construction of additional terminal storage, specifically development of a reservoir in Buckhorn Canyon, to meet both objectives. Better alternatives--cheaper and less environmentally damaging--are (to cope with failure) use of existing terminal storage and interties, along with an eventual phased construction of secure aqueducts in tne Delta, and (to mitigate shortages) purchase of high quality Mokelumne River water from the nearby Woodbridge Irrigation District, along with sharply rising block rates to induce conservation by EBMUD customers. Additional terminal storage, only as a last resort, would better come from some marginal addition to capacity at the planned Los Vaqueros Reservoir rather than construction of a new reservoir in Buckhorn Canyon. Under plausible assumptions, the cost of providing high quality water during a shortage is 10 times as high under the Buckhorn option as it would be with water purchases and conservation.