cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ZnO UV photodetector with controllable quality factor and photosensitivity
Creators: name: Campos, Leonardo C.
name: Guimaraes, Marcos H. D.
name: Goncalves, Alem-Mar B.
name: de Oliveira, Sergio
name: Lacerda, Rodrigo G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: ZnO nanowires have an enormous potential for applications as ultra-violet (UV) photodetectors. Their mechanism of photocurrent generation is intimately related with the presence of surface states where considerable efforts, such as surface chemical modifications, have been pursued to improve their photodetection capabilities. In this work, we report a step further in this direction demonstrating that the photosensitivity and quality factor (Q factor) of the photodetector are entirely tunable by an applied gate voltage. This mechanism enables UV photodetection selectivity ranging from wavelengths from tens of nanometers (full width at half maximum - FWHM) down to a narrow detection of 3 nm. Such control paves the way for novel applications, especially related to the detection of elements that have very sharp luminescence.
description: 12 pages, 3 figures. Published in: http://aipadvances.aip.org/resource/1/aaidbi/v3/i2/p022104_s1
Discovery of four water masers in the Small Magellanic Cloud
Creators: name: Breen, S. L.
name: Lovell, J. E. J.
name: Ellingsen, S. P.
name: Horiuchi, S.
name: Beasley, A. J.
name: Marvel, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the detection of four water masers within the Small Magellanic Cloud (SMC); two discovered with the 70-m Tidbinbilla radio telescope, and two discovered with the Australia Telescope Compact Array (ATCA). Precise positions of all four masers have been derived from ATCA observations, and the characteristics of each water maser have been monitored over a period of several years. Sensitive observations towards two previously detected water masers reported in the literature failed to detect any emission. The detected water masers show evidence of higher levels of temporal variability than equivalent Galactic sources, and one of the features associated with NGC346 IR1 shows an acceleration of 9.6 km/s yr^-1 over a 31 day period. Sensitive targeted observations for methanol and OH masers failed to detect any accompanying emission - in the case of methanol perhaps highlighting an under abundance in the SMC, consistent with expectations due to lower metallicity. The water masers are both bright and compact making them excellent targets for Very Long Baseline Interferometry (VLBI) observations, which can potentially measure the proper motion of the SMC (~1 - 2 mas yr^-1) with temporal baselines of ~12 months. Such observations would utilise sources associated with only the current epoch of star formation and hence have several advantages over alternative methods.
Scalable Distributed Job Processing with Dynamic Load Balancing
Creators: name: Srinivasrao, Putti
name: Rao, V. P. C.
name: Govardhan, A.
name: Mohanty, Ambika Prasad
Publisher: name: arXiv
Year: 2013
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: We present here a cost effective framework for a robust scalable and distributed job processing system that adapts to the dynamic computing needs easily with efficient load balancing for heterogeneous systems. The design is such that each of the components are self contained and do not depend on each other. Yet, they are still interconnected through an enterprise message bus so as to ensure safe, secure and reliable communication based on transactional features to avoid duplication as well as data loss. The load balancing, fault-tolerance and failover recovery are built into the system through a mechanism of health check facility and a queue based load balancing. The system has a centralized repository with central monitors to keep track of the progress of various job executions as well as status of processors in real-time. The basic requirement of assigning a priority and processing as per priority is built into the framework. The most important aspect of the framework is that it avoids the need for job migration by computing the target processors based on the current load and the various cost factors. The framework will have the capability to scale horizontally as well as vertically to achieve the required performance, thus effectively minimizing the total cost of ownership.
description: 12 pages
Music and Queered Temporality in Slave Play
Creators: name: Wilson, Imogen
Publisher: name: Current Musicology
Year: 2020

description: This paper considers the representational role of music in theatre. It will do this by examining the presentation of a queered temporal experience in Jeremy O. Harris’ Slave Play (2019), a current Broadway play that explores the impact of inherited trauma from slavery by interrogating the sexual power imbalances within three interracial couples. The paper will draw from two main examples from the play, analyzing the meta-diegetic use of two popular songs: ‘Work’ by Rihanna and ‘Multi Love’ by Unknown Mortal Orchestra. The ‘Work’ analysis is rooted in phenomenology, while the ‘Multi Love’ analysis focuses on the updated use of an old musical theatre device: the dream ballet. Both songs are heavily connected with particular characters and associated with their obsessive-compulsive disorder. I argue that their musical hallucinations are an attempt to overcome ‘restriction, uncertainty, and blockage’ in regard to their intimate relationships (Sara Ahmed 2006, p.139). As well as the analysis, the discussion features an overview of the literature concerning time and music in theatre, and of O. Harris’ auto-fictional approach.
description: Current Musicology, Vol 106 (2020): Special Issue: Queering and Quaring Musicology
Increasing the use efficiency of fertilizer phosphorus for maize in low-P Ganges Delta soils
Creators: name: Haque, Mohammad Asadul
name: Jahiruddin, Md
name: Hoque, Md Fazlul
name: Islam, Md Saiful
name: Hossain, Md Baktear
name: Satter, Md Abdus
name: Haque, Md Enamul
name: Bell, Richard William
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Plant Biology

description: The availability and use efficiency of phosphorus (P) is low in the acidic Ganges delta floodplain soils. The aim of the present study was to increase the use efficiency of P by varying the methods and forms of P application. The experiment comprised a factorial combination of two methods (broadcasting and furrow placement) and two forms (granular and powder) with three rates of P fertilizer application (36, 48 and 60 kg P ha−1). Results showed that furrow placement of P application gave 10%–20% yield benefit over broadcasting method. Agronomic P use efficiency, partial factor productivity, economic efficiency and leaf P concentration were remarkably higher in furrow placement of P fertilizer than conventional broadcasting method. Numerically the application of powder form P fertilizer demonstrated higher yield compared to granular form of P application. The furrow placement of P fertilizer exhibited the higher yield at lower rate of P application (36–48 kg P ha−1) while opposite trends were observed for broadcasting. Thus, it is concluded that furrow placement of P fertilizer application at 36–48 kg ha−1would give the best grain yield of maize in the Ganges delta floodplain soils.
Detecting baryon acoustic oscillations by 3d weak lensing
Creators: name: Grassi, Alessandra
name: Schaefer, Bjoern Malte
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the possibility of detecting baryon acoustic oscillation features in the cosmic matter distribution by 3d weak lensing. Baryon oscillations are inaccessible even to weak lensing tomography because of wide line-of-sight weighting functions and require a specialized approach via 3d shear estimates. We quantify the uncertainty of estimating the matter spectrum amplitude at the baryon oscillations wave vectors by a Fisher-matrix approach with a fixed cosmology and show in this way that future weak lensing surveys such as EUCLID and DES are able to pick up the first four wiggles, with EUCLID giving a better precision in the measurement. We also provide a detailed investigation of the correlation existing between errors and of their scaling behavior with respect to survey parameters such as median redshift, error on redshift, error on the galaxy shape measurement, sky coverage, and finally with respect to the number of wiggles one is trying to determine.
description: 11 pages, 15 figures, submitted to MNRAS
Detecting Non-Abelian Anyons by Charging Spectroscopy
Creators: name: Ben-Shach, Gilad
name: Laumann, Chris R.
name: Neder, Izhar
name: Yacoby, Amir
name: Halperin, Bertrand I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Observation of non-Abelian statistics for the e/4 quasiparticles in the ν=5/2 fractional quantum Hall state remains an outstanding experimental problem. The non-Abelian statistics are linked to the presence of additional low energy states in a system with localised quasiparticles, and hence an additional low-temperature entropy. Recent experiments, which detect changes in the number of quasiparticles trapped in a local potential well as a function of an applied gate voltage, V_G, provide a possibility for measuring this entropy, if carried out over a suitable range of temperatures, T. We present a microscopic model for quasiparticles in a potential well and study the effects of non-Abelian statistics on the charge stability diagram in the V_G-T plane, including broadening at finite temperature. We predict a measurable slope for the first quasiparticle charging line, and an even-odd effect in the diagram, which is a signature of non-Abelian statistics.
description: 8 pages, 3 fiugres
Developing a traffic control device maintenance management system interfacing with Gis
Creators: name: Morse, Diane I
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: Roadway systems contain a wide variety of spatially distributed physical features which require installation, maintenance and replacement. These features include traffic control devices such as signs, signals, pavement markings and streetlights. Several technologies exist that can be utilized by the transportation sector to improve program management of a number of these features. Geographic Information Systems (GIS) technology provides a powerful environment for the capture, storage, retrieval, analysis, and display of spatial (locationally defined) data. A need exists to provide an inventory of the transportation physical plant to interface with a work management system. Information pertaining to the number and condition of such features is required for planning, operating, maintaining, managing and budgeting needs. This thesis summarizes the development of a user-friendly, computerized process to establish a graphical interface between a roadway inventory database and GIS; Evaluation of existing technologies and a survey of current literature will provide a basis for the design of a Traffic Control Device Maintenance Management System. This system will provide a consistent form of technology transfer on a common platform. This system will manage resources by integrating work-orders and the database. The system will utilize GIS technology to integrate a work-order system and a database reporting system for resource management. The work order interface capabilities will include maintenance work-order management, project cost and progress tracking, and program planning and policy analysis; The key is to develop a user-friendly system useful to both the field-level installation crews and planning-level management. A case study in Clark County, Nevada, will be used to evaluate alternative methods of collecting and data on traffic control devices and to illustrate the development of a GIS-based management system. This system is intended to improve the efficiency and effectiveness of operational practices as well as serve as a vital decision support tool for planning and management.
Local conditioning in Dawson-Watanabe superprocesses
Creators: name: Kallenberg, Olav
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Consider a locally finite Dawson-Watanabe superprocess $ξ=(ξ_t)$ in $\mathsf{R}^d$ with $d\geq2$. Our main results include some recursive formulas for the moment measures of $ξ$, with connections to the uniform Brownian tree, a Brownian snake representation of Palm measures, continuity properties of conditional moment densities, leading by duality to strongly continuous versions of the multivariate Palm distributions, and a local approximation of $ξ_t$ by a stationary cluster $\tildeη$ with nice continuity and scaling properties. This all leads up to an asymptotic description of the conditional distribution of $ξ_t$ for a fixed $t>0$, given that $ξ_t$ charges the $\varepsilon$-neighborhoods of some points $x_1,\ldots,x_n\in \mathsf{R}^d$. In the limit as $\varepsilon\to0$, the restrictions to those sets are conditionally independent and given by the pseudo-random measures $\tildeξ$ or $\tildeη$, whereas the contribution to the exterior is given by the Palm distribution of $ξ_t$ at $x_1,\ldots,x_n$. Our proofs are based on the Cox cluster representations of the historical process and involve some delicate estimates of moment densities.
description: Published in at http://dx.doi.org/10.1214/11-AOP702 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Bell-state measurement and quantum teleportation using linear optics: two-photon pairs, entangled coherent states, and hybrid entanglement
Creators: name: Lee, Seung-Woo
name: Jeong, Hyunseok
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review and compare Bell-state measurement and quantum teleportation schemes using linear optics with three different types of resources, i.e., two-photon pairs, entangled coherent states and hybrid entangled states. Remarkably, perfect teleportation with linear optics is possible in principle based on a hybrid approach that combines two-photon pairs and entangled coherent states. It turns out that hybrid approach allows to perform Bell-state measurement and local Pauli operations in a deterministic way, while it requires photon number resolving measurements.
description: Submitted to the Proceedings of the First International Conference on Entangled Coherent State and Its Application to Quantum Information Science
Biochemical changes, biomass production, and productivity of Triticum aestivum as a function of increasing molybdenum application
Creators: name: Kumar, Anil
name: Aery, Naresh C.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: In the present study, the effects of soil-applied different molybdenum concentrations (0.1, 0.5, 2.5, 12.5 or 62.5 mg kg−1) in the form of sodium molybdate on growth performance, seed production, biochemical parameters, and uptake of Mo in wheat were investigated. Results indicate that Mo doses higher than 2.5 mg kg−1 of soil were observed to be toxic to wheat and retarded the growth as well as seed production. The change in biochemical constituents were correlated with soil Mo concentrations. Chlorophyll and carbohydrate contents increased under lower concentrations of Mo applied. In turn, Mo concentrations beyond 2.5 mg kg−1 significantly increased soluble proteins, total phenolic compounds, and free proline contents. The contents of Mo in root and shoot of wheat plants increased with increased Mo concentrations in the soil. Among the various concentrations of Mo studied, 2.5 mg kg−1 was moderately toxic while 12.5 and 62.5 mg kg−1 were highly toxic and induced stress responses to confer tolerance in wheat.
Towards a Simple Relationship to Estimate the Capacity of Static and Mobile Wireless Networks
Creators: name: Mao, Guoqiang
name: Lin, Zihuai
name: Ge, Xiaohu
name: Yang, Yang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Information Theory (cs.IT)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Extensive research has been done on studying the capacity of wireless multi-hop networks. These efforts have led to many sophisticated and customized analytical studies on the capacity of particular networks. While most of the analyses are intellectually challenging, they lack universal properties that can be extended to study the capacity of a different network. In this paper, we sift through various capacity-impacting parameters and present a simple relationship that can be used to estimate the capacity of both static and mobile networks. Specifically, we show that the network capacity is determined by the average number of simultaneous transmissions, the link capacity and the average number of transmissions required to deliver a packet to its destination. Our result is valid for both finite networks and asymptotically infinite networks. We then use this result to explain and better understand the insights of some existing results on the capacity of static networks, mobile networks and hybrid networks and the multicast capacity. The capacity analysis using the aforementioned relationship often becomes simpler. The relationship can be used as a powerful tool to estimate the capacity of different networks. Our work makes important contributions towards developing a generic methodology for network capacity analysis that is applicable to a variety of different scenarios.
description: accepted to appear in IEEE Transactions on Wireless Communications
title: Robots Still Outnumber Humans in Web Archives in 2019, But Less Than in 2012
Creators: name: Jayanetti, Himarsha R.
name: Garg, Kritika
name: Alam, Sawood
name: Nelson, Michael L.
name: Weigle, Michele C.
Publisher: name: Old Dominion University Libraries
Year: 2023

description: To identify robots and human users in web archives, we conducted a study using the access logs from the Internet Archive’s (IA) Wayback Machine in 2012 (IA2012), 2015 (IA2015), and 2019 (IA2019), and the Portuguese Web Archive (PT) in 2019 (PT2019). We identified user sessions in the access logs and classified them as human or robot based on their browsing behavior. In 2013, AlNoamany et al. [1] studied the user access patterns using IA access logs from 2012. They established four web archive user access patterns: single-page access (Dip), access to the same page at multiple archive times (Dive), access to distinct web archive pages at about the same archive time (Slide), and access to a list of archived pages (TimeMaps) for a certain URL (Skim). They also determined that in the 2012 IA access logs, humans were outnumbered by robots by 10:1 in terms of sessions and 5:4 in terms of raw HTTP accesses. We extended their work by presenting a comparison of detected robots vs. humans and their access patterns and temporal preferences based on the two archives (IA vs. PT) and between three years of IA access logs (IA2012, IA2015, IA2019). The total number of robots detected in IA2012 (91% of requests) and IA2015 (88% of requests) is greater than in IA2019 (70% of requests). Robots account for 98% of requests in PT2019. We found that the robots are almost entirely limited to Dip and Skim access patterns in IA2012 and IA2015, but exhibit all the patterns and their combinations in IA2019. We also investigated the temporal preferences of the users and discovered that both humans and robots favor web pages that have been archived recently.

[1] AlNoamany, Y., Weigle, M.C., Nelson, M.L.: Access patterns for robots and humans in web archives. In: JCDL ’13: Proceedings of the 13th ACM/IEEE-CS Joint Conference on Digital Libraries. pp. 339–348 (2013), https://dl.acm.org/doi/10.1145/2467696.2467722
The effects of deregulation on the structure of the Texas natural gas production industry
Creators: name: Martin, Scott Lemuel
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: Buying, selling, and transporting natural gas through underground pipelines has historically been regulated. However, in 1978 the Natural Gas Policy Act was passed, reducing the control that regulators had over the price of natural gas. In addition, the 1989 Natural Gas Wellhead Decontrol Act and the Federal Energy Regulatory Commission's Order #636 in 1992, continued deregulation of both natural gas prices and transportation from the point of sale to the customer's burner tip; Analysts have argued these regulatory changes have increased competition in the natural gas industry. This paper presents an empirical analysis of the Texas natural gas production industry in order to determine the impact of regulatory change on the structure of the industry. The empirical analysis confirms that deregulation has increased competition among Texas natural gas producers.
XIVA XONLIGIDA DAVLAT BOSHQARUVI
Creators: name: Rahmatov, Murodjon
name: Yusupjonova, Marjonaxon
name: Maxamadov, Abduhoshim
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada Xiva xonligida davlat boshqaruvida olib borilgan islohotlar, davlat boshqaruvi tuzilishi, davlat mansablari va unvonlar hamda ularing vazifalari,davlatning ma'muriy tuzilishi, harbiy mansab va unvonlar, ularning vazifalari haqida so'z boradi.
DISDRODB: a global data base of raindrop size distribution observations
Creators: name: Gionata, Ghiggi
name: Candolfi Kim
name: Longchamp Régis
name: Charlotte, Weil
name: Remko, Uijlenhoet
name: Unal Christine
name: Marc, Schleiss
name: Raupach Timothy, H.
name: Alexis, Berne
Publisher: name: Zenodo
Year: 2022
Subjects: DISDRODB, disdrometer, rain drop size, DSD, rainfall, OTT, Parsivel, Thies LPM, laser precipitation monitor, JWD, 2DVD

description: The raindrop size distribution (DSDs) describes the number and size distributions of raindrops in a volume of air. It is key to model the propagation of microwave signals through the atmosphere (crucial for telecommunication and remote sensing), to improve microphysical schemes in numerical weather prediction models, and to understand rain-related land surface processes (rainfall interception, soil erosion). Despite its importance, the spatial and temporal variability of the DSD remains poorly understood. This has motivated scientists all around the globe to deploy DSD recording instruments known as disdrometers, in order to collect DSD observations in various climatic regions. However, only a small fraction of this data is easily accessible. Data are stored in disparate formats with poor documentation, making them difficult to share, analyze, compare and re-use. Additionally, very limited software is currently publicly available for DSD processing. We recently undertook an initial effort to index, collect and homogenize DSD data sets across the globe, as well as to establish a global standard for DSD observation sharing. The envisioned publicly-available global database of well-maintained and homogenized disdrometer data (DISDRODB) aims to accelerate and advance precipitation research by promoting the mobilization of data archives currently scattered across various institutions. An open-source python package aims to enclose all algorithms for DISDRODB product generation and will provide an API to facilitate data preprocessing, analysis and visualization of disdrometer data. This contribution will present DISDRODB and its tools, based on a preliminary set of DSD observations from various regions in Europe.
Thermodynamical Property of Entanglement Entropy for Excited States
Creators: name: Bhattacharya, Jyotirmoy
name: Nozaki, Masahiro
name: Takayanagi, Tadashi
name: Ugajin, Tomonori
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We argue that the entanglement entropy for a very small subsystem obeys a property which is analogous to the first law of thermodynamics when we excite the system. In relativistic setups, its effective temperature is proportional to the inverse of the subsystem size. This provides a universal relationship between the energy and the amount of quantum information. We derive the results using holography and confirm them in two dimensional field theories. We will also comment on an example with negative specific heat and suggest a connection between the second law of thermodynamics and the strong subadditivity of entanglement entropy.
description: 5 pages, 2 figures
The Bharatiya Janata Party of India: A social movement striving for political dominance
Creators: name: Lauer, Joel Aaron
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: There has been a rise in religious nationalism over the past two decades throughout the world. This study will focus on one political party that has gained much of its popularity through the appeal to Hindu nationalism: The Bharatiya Janata Party of India (The BJP). This study will use James Darsey's catalytic event model to study the events that have shaped the BJP, the rhetorical periods that these events spurred, and the values of the BJP during these periods. This study has also incorporated "The Evil" from Robert Frykenberg's model to attempt to show what group the BJP criticizes during each period.
Fluctuating surface-current formulation of radiative heat transfer: theory and applications
Creators: name: Rodriguez, Alejandro W.
name: Reid, M. T. Homer
name: Johnson, Steven G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We describe a novel fluctuating-surface current formulation of radiative heat transfer between bodies of arbitrary shape that exploits efficient and sophisticated techniques from the surface-integral-equation formulation of classical electromagnetic scattering. Unlike previous approaches to non-equilibrium fluctuations that involve scattering matrices---relating "incoming" and "outgoing" waves from each body---our approach is formulated in terms of "unknown" surface currents, laying at the surfaces of the bodies, that need not satisfy any wave equation. We show that our formulation can be applied as a spectral method to obtain fast-converging semi-analytical formulas in high-symmetry geometries using specialized spectral bases that conform to the surfaces of the bodies (e.g. Fourier series for planar bodies or spherical harmonics for spherical bodies), and can also be employed as a numerical method by exploiting the generality of surface meshes/grids to obtain results in more complicated geometries (e.g. interleaved bodies as well as bodies with sharp corners). In particular, our formalism allows direct application of the boundary-element method, a robust and powerful numerical implementation of the surface-integral formulation of classical electromagnetism, which we use to obtain results in new geometries, including the heat transfer between finite slabs, cylinders, and cones.
Some reductions of the spectral set conjecture to integers
Creators: name: Dutkay, Dorin Ervin
name: Lai, Chun-Kit
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: The spectral set conjecture, also known as the Fuglede conjecture, asserts that every bounded spectral set is a tile and vice versa. While this conjecture remains open on ${\mathbb R}^1$, there are many results in the literature that discuss the relations among various forms of the Fuglede conjecture on ${\mathbb Z}_n$, ${\mathbb Z}$ and ${\mathbb R}^1$ and also the seemingly stronger universal tiling (spectrum) conjectures on the respective groups. In this paper, we clarify the equivalences between these statements in dimension one. In addition, we show that if the Fuglede conjecture on ${\mathbb R}^1$ is true, then every spectral set with rational measure must have a rational spectrum. We then investigate the Coven-Meyerowitz property for finite sets of integers, introduced in \cite{CoMe99}, and we show that if the spectral sets and the tiles in ${\mathbb Z}$ satisfy the Coven-Meyerowitz property, then both sides of the Fuglede conjecture on ${\mathbb R}^1$ are true.
Spin-statistics-quantum number connection and supersymmetry
Creators: name: Weiner, Richard M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The analogy between the Skyrme and Higgs field leads to the conjecture that all fermions are skyrmions and thus always carry conserved quantum numbers, which are identified with baryon or lepton quantum numbers. This connection between spin and quantum numbers, which parallels the connection between spin and statistics due to the Pauli principle, may explain why supersymmetry has not been observed. Creation of s-particles at higher than present energies due to a breakdown of the Skyrme mechanism might imply the violation of the exclusion principle.
description: 17 pages
Extension of Classical Nucleation Theory for Uniformly Sheared Systems
Creators: name: Mokshin, Anatolii V.
name: Galimzyanov, Bulat N.
name: Barrat, Jean-Louis
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nucleation is an out-of-equilibrium process, which can be strongly affected by the presence of external fields. In this letter, we report a simple extension of classical nucleation theory to systems submitted to an homogeneous shear flow. The theory involves accounting for the anisotropy of the critical nucleus formation, and introduces a shear rate dependent effective temperature. This extended theory is used to analyze the results of extensive molecular dynamics simulations, which explore a broad range of shear rates and undercoolings. At fixed temperature, a maximum in the nucleation rate is observed, when the relaxation time of the system is comparable to the inverse shear rate. In contrast to previous studies, our approach does not require a modification of the thermodynamic description, as the effect of shear is mainly embodied into a modification of the kinetic prefactor and of the temperature.
description: 6 pages, 4 figures
Dymamical Casimir emission from polariton condensates
Creators: name: Koghee, Selma
name: Wouters, Michiel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study theoretically the dynamical Casimir effect in an exciton-polariton condensate that is suddenly created by an ultrashort laser pulse at normal incidence. As a consequence of the abrupt change of the quantum vacuum, Bogoliubov excitations are generated. The subsequent evolution, governed by polariton interactions and losses, is studied within a linearized truncted Wigner approximation. We focus in particular on the momentum distribution and spatial coherence. The limiting behavior at large and small momenta is determined analytically. A simple scaling relation for the final condensate depletion as a function of the system parameters is found and the correlation length is shown to depend linearly on the condensate depletion.
description: 5 pages, 4 figures
АКТИ РЕАЛІЗАЦІЇ НОРМ АДМІНІСТРАТИВНОГО ПРАВА ЩОДО ВІДЧУЖЕННЯ ВІЙСЬКОВОГО МАЙНА
Creators: name: Прохоренко М. М.
name: Медвідь Л. П.
Publisher: name: Zenodo
Year: 2024
Subjects: військове майно, захист, акти реалізації, відчуження, правове регулювання, охорона.

description: У статті розглянуто актуальні питання щодо особливостей правового регулювання процесу прийняття актів реалізації норм адміністративного права щодо відчуження військового майна.  Автори акцентують увагу на необхідності надання визначення і розкриття змісту понять «відчуження» та «охорона» військового майна.

Мета наукового дослідження полягає у визначенні проблематики правового забезпечення  відносин, що виникають у сфері охорони військового майна, реалізації норм адміністративного права щодо відчуження військового майна та викладенні думок щодо способів їх вирішення.

Автори приходять до висновку, що  в умовах  агресії порядок прийняття актів реалізації норм права щодо відчуження військового майна потребує посилення контролю з боку Міноборони України, це викликано рядом факторів, головними з яких є:

- високий рівень корупції;

- низький рівень поінформованості посадових осіб, які відповідають за власність;

- низький рівень підготовки фахівців із збереження, захисту та охорони військового майна;

- відсутність достатніх коштів (сучасні технічні засоби охорони та захисту дозволяють скоротити чисельність особового складу, який залучається до охорони та захисту військового майна та бути більш ефективними);

- відсутність повністю обладнаних складів, складів та місць зберігання військового майна, через що майно швидко псується та списується, що також може бути результатом корупційних схем.
A high-granularity calorimeter insert based on SiPM-on-tile technology for the EIC
Creators: name: Arratia, Miguel
Publisher: name: Zenodo
Year: 2022
Subjects: EIC
calorimeter
high-granularity
particle flow
hadronic calorimeter

description: Talk presented at the CPAD 2022 workshop in Stony Brook University, November 30th 2022.
title: Computer Based Modeling for Tilt-Wing e-VTOL Propeller Performance
Creators: name: Konuk, Ege
name: Landman, Drew
Publisher: name: Old Dominion University Libraries
Year: 2023

description: Recent decades have seen a rapid popularization of Urban Air Mobility (UAM) concepts. The new generation of designs presents a wide range of configurations and approaches to exploit the advantages of these vehicles that can be used in civil, commercial, and military applications. One of the more popular concepts is the tandem tilt-wing e-VTOL configuration. However, these types of VTOL configurations bring challenges for performance prediction during crucial parts of flight operations. The flight dynamics during transition regimes where the vehicle transitions from vertical to forward flight and vice versa is not fully understood. In this research, modified blade element momentum theory (BEMT) is used to analyze the blades on NASA’s LA-8 testbed prototype tandem tilt-wing UAM. The method proposed finds the important parameters of the propeller performance i.e., thrust, normal force and torque coefficients of the complete propeller system at a range of tilt-angles from 0 to 90 degrees. Results are compared to wind tunnel experiments with the identical propeller, conducted in the ODU Low-speed wind tunnel lab. Surrogate models were created using Gaussian process models to decrease the required computational resources for simulations.
Search for correlations between solar flares and decay rate of radioactive nuclei
Creators: name: Bellotti, E.
name: Broggini, C.
name: Di Carlo, G.
name: Laubenstein, M.
name: Menegazzo, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The deacay rate of three different radioactive sources 40K, 137Cs and natTh has been measured with NaI and Ge detectors. Data have been analyzed to search for possible variations in coincidence with the two strongest solar flares of the years 2011 and 2012. No significant deviations from standard expectation have been observed, with a few 10-4 sensitivity. As a consequence, we could not find any effect like that recently reported by Jenkins and Fischbach: a few per mil decrease in the decay rate of 54Mn during solar flares in December 2006.
description: 5 pages, 3 figures
Sound effects: Measuring the impact of aircraft noise on residential property values around McCarran International Airport
Creators: name: Myles, Curtis L.
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: The airline industry is investing billions of dollars to adhere to the Airport Noise and Capacity Act of 1990. The Act requires airlines to reconfigure 100% of their fleets with quieter aircraft. This regulation is based in part on studies conducted around airport facilities which indicated a negative impact from noise on residential property values; The purpose of this paper is to review the issue of aircraft noise and its impact on residential property, specifically single-family homes. It discusses the use of hedonic functional forms in measuring the effect of aircraft noise around a major airport facility. The empirical analysis concludes that a low, negative impact on single-family residences can be expected as a result of aircraft noise exposure around McCarran International Airport.
Radio Interferometric Calibration Using a Riemannian Manifold
Creators: name: Yatawatta, Sarod
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In order to cope with the increased data volumes generated by modern radio interferometers such as LOFAR (Low Frequency Array) or SKA (Square Kilometre Array), fast and efficient calibration algorithms are essential. Traditional radio interferometric calibration is performed using nonlinear optimization techniques such as the Levenberg-Marquardt algorithm in Euclidean space. In this paper, we reformulate radio interferometric calibration as a nonlinear optimization problem on a Riemannian manifold. The reformulated calibration problem is solved using the Riemannian trust-region method. We show that calibration on a Riemannian manifold has faster convergence with reduced computational cost compared to conventional calibration in Euclidean space.
description: Draft version. Final version will appear in IEEE ICASSP 2013, http://www.icassp2013.com/
Non-Fermi liquid and topological states with strong spin-orbit coupling
Creators: name: Moon, Eun-Gook
name: Xu, Cenke
name: Kim, Yong Baek
name: Balents, Leon
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We argue that a class of strongly spin-orbit coupled materials, including some pyrochlore iridates and the inverted band gap semiconductor HgTe, may be described by a minimal model consisting of the Luttinger Hamiltonian supplemented by Coulomb interactions, a problem studied by Abrikosov and collaborators. It contains two-fold degenerate conduction and valence bands touching quadratically at the zone center. Using modern renormalization group methods, we update and extend Abrikosov's classic work and show that interactions induce a quantum critical non-Fermi liquid phase, stable provided time-reversal and cubic symmetries are maintained. We determine the universal power-law exponents describing various observables in this "Luttinger Abrikosov Beneslavskii" state, which include conductivity, specific heat,non-linear susceptibility and magnetic Gruneisen number. Furthermore, we determine the phase diagram in the presence of cubic and/or time-reversal symmetry breaking perturbations, which includes topological insulator and Weyl semi-metal phases. Many of these phases possess an extraordinarily large anomalous Hall effect, with the Hall conductivity scaling sub-linearly with magnetization.
description: 4+3 pages
Validasi data dengan menggunakan objek lookup pada borland delphi 7.0
Creators: name: Abdillah, Leon Andretti
Publisher: name: arXiv
Year: 2013
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Developing an application with some tables must concern the validation of input (specially in Table Child). In order to maximize the accuracy and data input validation. Its called lookup (took data from other dataset). There are two ways to look up data from Table Parent: 1) Using Objects (DBLookupComboBox and DBookupListBox), or 2) Arranging the properties of data types fields (shown by using DBGrid). In this article is using Borland Delphi software (Inprise product). The method is offered using 5 (five) practise steps: 1) Relational Database Scheme, 2) Form Design, 3) Object DatabasesRelationships Scheme, 4) Properties and Field Type Arrangement, and 5) Procedures. The result of this paper are: 1) The relationship that using lookup objects are valid, and 2) Delphi Lookup Objects can be used for 1-1, 1-N, and M-N relationship.
description: 16 pages
Cost calculation of ancillary services including system security, automatic generation control and reactive power
Creators: name: Lateef, Mohammad Shahzad
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: The recent changes in the electric utility industry due to the deregulation of the industry have created an immense need for the evaluation of all the services provided. The electric utility companies all across the United States have been providing these services for a long period of time. However, under the light of current deregulation, each one of these services have to be identified and evaluated separately. This thesis discusses three of these services, including security of the power system operation (Spinning and operating reserves), Automatic Generation Control (Load Following) and reactive power support. These three services are vital in operation of any power system. There is a lot of research currently being done to evaluate the cost of providing these services. The thesis makes an attempt to recognize the importance of these services and uses the system dispatch and unit commitment theory and principles to evaluate the cost of each of the above mentioned services.
Women's educational pursuits: Effects on marital and relationship happiness
Creators: name: Minetti, Michele
Publisher: name: University of Nevada, Las Vegas
Year: 1996

description: This study uses a descriptive design to investigate how attending college may change a woman's perception of her happiness with her marriage or primary relationship. Also assessed is the presence of value change since entering college, and how such changes may affect the woman's perception of her marriage or relationship. Marital happiness was assessed in nine relationship domains by using a likert scale. The domains that showed a statistically significant decrease in marital/relationship happiness were: household responsibilities, social activities, money, and sex. The independence domain was the only one that showed a statistically significant increase in marital happiness. Ninety percent of the participants reported their values have changed since their return to school. Seventy-five percent of the participants reported that value changes did affect their marriage or relationship.
On the spinor L-function of Miyawaki-Ikeda lifts
Creators: name: Hayashida, Shuichi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F46 (primary), 11F66 (secondary)

description: We consider lifts from two elliptic modular forms to Siegel modular forms of odd degrees which are special cases of Miyawaki-Ikeda lifts. Assuming non-vanishing of these Miyawaki-Ikeda lifts, we show that the spinor L-functions of these Miyawaki-Ikeda lifts are products of some kind of symmetric power L-functions determined by original two elliptic modular forms.
Unlocking sustainability potentials in heat treatment processes
Creators: name: Scharf, Stefan
name: Bergedieck, Niklas
name: Riedel, Eric
name: Richter, Hans
name: Stein, Norbert
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2020
Subjects: subject: Heat treatment
subject: Sustainable manufacturing
subject: Aluminium A356
subject: 621.8

description: Energy consumption, greenhouse gas emissions, environmental impact levels, and the availability of materials as well as their sustainable usage are all topics of high current interest. The energy intensive processes of casting production such as heat treatment are particularly a ected by the pursuit of sustainability. It has been estimated that up to 20% of the total energy demand in a non-ferrous foundry is required to provide the heat energy necessary during heat treatment processes. This paper addresses the application-oriented development of a sustainable configuration of the heat treatment process at the example of the aluminium-casting alloy A356 (AlSi7Mg0.3). Based on calculations of the physically necessary operating modes and under investigation of previous parameter recommendations, experimental studies were carried out to investigate the e ects of various heat treatment parameters on the ultimate mechanical properties of the alloy. Since the achievable mechanical properties of the finished casting are decisive, the static and dynamic casting properties resulting from the heat treatment with optimized process parameters were compared with those of conventional process control. Significant optimization potential is shown for reducing the treatment time and thus lowering the energy consumption.