cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Certifying position-momentum entanglement at telecommunication wavelengths
Creators: name: Achatz, Lukas
name: Ortega, Evelyn
name: Dovzhik, Krishna
name: Shiozaki, Rodrigo F.
name: Fuenzalida, Jorge
name: Wengerowsky, Sören
name: Bohmann, Martin
name: Ursin, Rupert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: TheThe successful employment of high-dimensional quantum correlations and its integration in telecommunication infrastructures is vital in cutting-edge quantum technologies for increasing robustness and key generation rate. Position-momentum Einstein-Podolsky-Rosen (EPR) entanglement of photon pairs are a promising resource of such high-dimensional quantum correlations. Here, we experimentally certify EPR correlations of photon pairs generated by spontaneous parametric down-conversion (SPDC) in a nonlinear crystal with type-0 phase-matching at telecommunication wavelength for the first time. To experimentally observe EPR entanglement, we perform scanning measurements in the near- and far-field planes of the signal and idler modes. We certify EPR correlations with high statistical significance of up to 45 standard deviations. Furthermore, we determine the entanglement of formation of our source to be greater than one, indicating a dimensionality of greater than 2. Operating at telecommunication wavelengths around 1550 nm, our source is compatible with today's deployed telecommunication infrastructure, thus paving the way for integrating sources of high-dimensional entanglement into quantum-communication infrastructures.
description: Close to published version
A Genetic Algorithm Based Finger Selection Scheme for UWB MMSE Rake Receivers
Creators: name: Gezici, Sinan
name: Chiang, Mung
name: Poor, H. Vincent
name: Kobayashi, Hisashi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Due to a large number of multipath components in a typical ultra wideband (UWB) system, selective Rake (SRake) receivers, which combine energy from a subset of multipath components, are commonly employed. In order to optimize system performance, an optimal selection of multipath components to be employed at fingers of an SRake receiver needs to be considered. In this paper, this finger selection problem is investigated for a minimum mean square error (MMSE) UWB SRake receiver. Since the optimal solution is NP hard, a genetic algorithm (GA) based iterative scheme is proposed, which can achieve near-optimal performance after a reasonable number of iterations. Simulation results are presented to compare the performance of the proposed finger selection algorithm with those of the conventional and optimal schemes.
description: To appear in the Proc. IEEE International Conference on Ultrawideband (ICU-2005)
A Bioeconomic Analysis of Protected Area use in Fisheries Management
Creators: name: Greenville, Jared W.
name: MacAulay, T. Gordon
name: Greenville, Jared W.
name: MacAulay, T. Gordon
Publisher: name: Unknown
Year: 2006
Subjects: Resource /Energy Economics and Policy

description: The use of protected areas as a fishery management tool has been suggested as a hedge against management failures and variation in harvests. A stochastic bioeconomic model of a two-species fishery will be used to test the performance of protected areas as a management tool in a fishery with heterogenous environments. Protected areas are analysed under density-dependent and sink-source dispersal relationships between environments within the fishery. Differing levels of management control over fishery resource extraction are analysed. The model is applied to Manning Bioregion in NSW. The focus of the study is placed on the biological and institutional characteristics that yield benefits to the fishery.
Dust in a merging galaxy sequence: the SCUBA view
Creators: name: Georgakakis, A.
name: Xilouris, E. M.
name: Misiriotis, A.
name: Charmandaris, V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the cold and warm dust properties during galaxy interactions using a merging galaxy sample ordered into a chronological sequence from pre- to post-mergers. Our sample comprises a total of 29 merging systems selected to have far-infrared and sub-millimeter observations. We use the 100-to-850 micron flux density ratio, f100/f850, as a proxy to the mass fraction of the warm and the cold dust in these systems. We find evidence for an increase in f100/f850 along the merging sequence from early to advanced mergers and interpret this trend as an increase of the warm relative to the cold dust mass. We argue that the two key parameters affecting the f100/f850 flux ratio is the star-formation rate and the dust content of individual systems relative to the stars. Using a sophisticated model for the absorption and re-emission of the stellar UV radiation by dust we show that these parameters can indeed explain both the increase and the observed scatter in the f100/f850 along the merging galaxy sequence.
description: To appear in the proceedings of: "The Spectral Energy Distribution of Gas-Rich Galaxies: Confronting Models with Data", Heidelberg, 4-8 Oct. 2004, eds. C.C. Popescu and R.J. Tuffs, AIP Conf. Ser., in press
Direct-channel option of the forward slope increase
Creators: name: Troshin, S. M.
name: Tyurin, N. E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The LHC data on the elastic scattering indicate that the forward slope increase is not consistent with the contributions of the simple Regge poles only with the linear Regge trajectories. The dynamics might be associated with unitarization in the direct channel of reaction. We discuss the problems of the Regge model and provide a respective illustration of the direct-channel option.
description: 9 pages, 1 figure, version published in "Particles"
Scalar Dark Matter and Cold Stars
Creators: name: Grifols, J. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In a medium composed of scalar particles with non-zero mass, the range of Van-der-Waals-type scalar mediated interactions among nucleons becomes infinite when the medium makes a transition to a Bose-Einstein condensed phase. We explore this phenomenon in an astrophysical context. Namely, we study the effect of a scalar dark matter background on the equilibrium of degenerate stars.In particular we focus on white dwarfs and the changes induced in their masses and in their radii.
description: revised version to match published paper
Hypselodelphys velutina Jongkind 2008, sp. nov.
Creators: name: Jongkind, Carel C. H.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Zingiberales
Marantaceae
Hypselodelphys
Hypselodelphys velutina

description: Hypselodelphys velutina Jongkind, sp. nov. (Figs 4; 5) A Hypselodelphyde poggeana (K.Schum.) Milne-Redh. differt indumento confertim velutino in pagina extra bractearum et in internodiis inflorescentiae. TYPUS. — Liberia. Grand Cape Mount, in MMAL mine area, on slope of the mine, 14.II.1970, J. W. A. Jansen 1846 (holo-, WAG; iso-, BR, MO). PARATYPES. — Sierra Leone. Mt Leicester, V.1857, Barter s.n. (K). — Kangahun, 7.II.1953, Deighton 6020 (K, P). — Lake Sonfon, 14.II.1966, Gledhill 446 (K). — Près Kania, vers Mt Loma, 27. I.1966, Jaeger 9102 (K). — Piémont W Loma, II.1966, Jaeger 9181 (P). — Gbinti, Dibia, 4.II.1955, H . D. Jordan 988 (K). — Tingi Mountains, on main plateau near camp, 12.IV.1965, Morton & Gledhill SL 1857 (K, WAG). — Koyema, N Kono, foot of Tingi Hills, 12.IV.1965, Morton & Gledhill SL 1960 (K, WAG). — Kennema, 20. I.1914, N. W . Thomas 7748 (K). Liberia. Nimba, 3.II.1965, J . G. Adam 20826 (K). — Nimba, I.1970, Blyden 935 (WAG). — Duport, c. 8 miles E of Monrovia, 2.XI.1966, Bos 2304 (WAG). — 19 miles E of Bomi Hills, along the road to Bopulu, 13.II.1969, J . W. A. Jansen 1542 (MO, WAG). — E slope of Putu Hills East Range, W of Tiama Town, 31. V.2005, Jongkind, Kwewon & Kpadeyeah 6544 (WAG) Côte d'Ivoire. Mount Tonkoui, 9.II.1961, H . C. D. de Wit 9150 (WAG). — Mount Tonkoui, 30.III.2000, Jongkind, Hawthorne & Assi-Yapo 4839 (WAG). DESCRIPTION Liana scrambling up to 10 m high in vegetation. Leaves slightly asymmetric; blade very variable in size, 2.2-11 × 5-25 cm, with some hairs close to the midrib beneath but otherwise glabrous.Inflorescence terminal, simple or branched at base, up to 12 cm long, with internodes c. 5 mm long with the surface hiding beneath a dense cover of half-erect short hairs; bracts 1.7-2 cm long, dense velutinous on the outside.Flower white, sometimes with yellow and violet, more or less equal to the flowers of the other species in the genus.Fruit yellow and green, three-lobed with rounded corners, muricate, with 3 large seeds. HABITAT AND DISTRIBUTION Wet evergreen forest from Sierra Leone to Côte d'Ivoire (Fig. 3). REMARKS The habit of Hypselodelphys triangularis is principally the same as that of H. velutina as shown in the Figure 4.
description: Published as part of Jongkind, Carel C. H., 2008, Two new species of Hypselodelphys (Marantaceae) from West Africa, pp. 57-62 in Adansonia (3) (3) 30 (1) on pages 59-62, DOI: 10.5281/zenodo.4601941
Household Food Expenditures across Income Groups: Do Poor Households Spend Differently than Rich Ones?
Creators: name: King, Robert P.
name: Damon, Amy L.
name: Leibtag, Ephraim S.
name: King, Robert P.
name: Damon, Amy L.
name: Leibtag, Ephraim S.
Publisher: name: Unknown
Year: 2006
Subjects: Consumer/Household Economics

description: The Life Cycle - Permanent Income Hypotheses (LCPIH) suggests that the timing of an income payment or government transfer should have no effect on the expenditures of the recipient. In this paper we test the LCPIH against a dynamic model of household consumption which predicts clustered food expenditure. We use data from 7,013 households in fifty-two urban and peri-urban markets throughout the United States containing detailed daily expenditure data collected by ACNielsen Homescan for 2003. Specifically, we examine aggregate food expenditure patterns, shopping trip patterns, and expenditure patterns across retail channels over calendar weeks, weekly seven day cycles, and days of the week. Our main finding is that households in the lowest 25 percent of the income distribution that have zero employed people have a significantly higher differenced expenditure level in the beginning of the month and significantly lower differenced expenditure in the last week or weeks of the calendar month, thus rejecting the LCPIH. Further, we find that, in general, households do not use convenience stores as a complementary retail channel to the grocery channel.
Role of the Brans-Dicke scalar in the holographic description of dark energy
Creators: name: Kim, Hungsoo
name: Lee, H. W.
name: Myung, Y. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study cosmological application of the holographic energy density in the Brans-Dicke theory. Considering the holographic energy density as a dynamical cosmological constant, it is more natural to study it in the Brans-Dicke theory than in general relativity. Solving the Friedmann and Brans-Dicke field equations numerically, we clarify the role of Brans-Dicke field during evolution of the universe. When the Hubble horizon is taken as the IR cutoff, the equation of state ($w_{\Lmd}$) for the holographic energy density is determined to be 5/3 when the Brans-Dicke parameter $\omg$ goes infinity. This means that the Brans-Dicke field plays a crucial role in determining the equation of state. For the particle horizon IR cutoff, the Brans-Dicke scalar mediates a transition from $w_{\Lmd} = -1/3$ (past) to $w_{\Lmd} = 1/3$ (future). If a dust matter is present, it determines future equation of state. In the case of future event horizon cutoff, the role of the Brans-Dicke scalar and dust matter are turned out to be trivial, whereas the holographic energy density plays an important role as a dark energy candidate with $w_{\Lmd} =-1$.
description: 10pages, 3figures, version to appear in PLB
Modelling the dust content of spiral galaxies: More dust mass vs. enhanced dust grain emissivity
Creators: name: Dasyra, K. M.
name: Xilouris, E. M.
name: Misiriotis, A.
name: Kylafis, N. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present detailed modelling of the spectral energy distribution (SED) of the spiral galaxies NGC 891, NGC 4013, and NGC 5907 in the far-infrared (FIR) and sub-millimeter (submm) wavelengths. The model takes into account the emission of the diffuse dust component, which is heated by the UV and optical radiation fields produced by the stars, as well as the emission produced locally in star forming HII complexes. The radiative transfer simulations of Xilouris et al. (1999) in the optical bands are used to constrain the stellar and dust geometrical parameters, as well as the total amount of dust. We find that the submm emission predicted by our model can not account for the observed fluxes at these wavelengths. We examine two cases, one having more dust embedded in a second thin disk and another allowing for an enhanced submillimeter emissivity of the dust grains. We argue that both cases can equally well reproduce the observed SED. The case of having more dust embedded in a second disk though, is not supported by the near-infrared observations and thus more realistic distributions of the dust (i.e., in spiral arms and clumps) have to be examined in order to better fit the surface brightness of each galaxy.
description: To appear in the proceedings of: "The Spectral Energy Distribution of Gas-Rich Galaxies: Confronting Models with Data", Heidelberg, 4-8 Oct. 2004, eds. C.C. Popescu and R.J. Tuffs, AIP Conf. Ser., in press
The Wage Earnings Impact of Historically Black Colleges and Universities
Creators: name: Mykerezi, Elton
name: Mills, Bradford F.
name: Mykerezi, Elton
name: Mills, Bradford F.
Publisher: name: Unknown
Year: 2006
Subjects: Labor and Human Capital

description: The impact on wages from blacks' attendance of historically black colleges and universities (HBCUs) versus other colleges is examined using geo-coded National Longitudinal Survey of Youth 1979 data. The paper reconciles seemingly conflicting findings in previous studies by estimating wage profiles over time, rather than by estimating wages at a single point in time. Estimates indicate that black males show no initial wage advantage as a result of HBCU attendance, but their wages increase 1.4-1.5% faster per year after attending HBCUs compared to other colleges. This faster growth generates discounted career earnings from HBCU attendance that are 9.6% higher for HBCU attendees and 8.9% higher for the average four-year college black student. For black females, HBCU attendance has no significant impact on initial wages or on subsequent wage growth.
description: Paper removed by author. Please see the current version in the July 2008 issue of the Southern Economic Journal, Volume 75, Number 1, pages 173-187.
Recursive Sustainability: Intertemporal Efficiency and Equity
Creators: name: Knapp, Keith C.
name: Knapp, Keith C.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Research Methods/ Statistical Methods
subject: growth
subject: environment
subject: intergenerational equity
subject: dynamic programming

description: PV-optimality in a capital-resource economy can imply decreasing utility over some portion of the time horizon. Various criteria have been proposed to maintain intergenerational equity defined as nondeclining utility, but these have some limitations and problems. This paper proposes a new welfare criteria incorporating present value to maintain efficiency, and an equity function with convex costs on declining utility. This criterion is economically efficient, time-consistent and recursive. An extension of dynamic programming to multiple value functions is developed to solve this problem. Increasing the equity weight increasingly eliminates declining portions of utility time paths. Sustainability implies increasing consumption in the early time periods and some intermediate time periods relative to PV-optimality. A surprising result is that sustainability can actually result in increased resource usage in early time periods, followed later by higher levels of resource stocks compared to PV-optimality. The sustainability analysis shows that while conventional benefit-cost and valuation analysis contribute to efficiency, they do not necessarily induce sustainability due to incorrect dynamic GE prices. Similar comments apply to Green NNP analysis. The concepts and extended DP methods developed in this paper extend naturally to uncertainty and can also be applied to generalized consumer and social choice models beyond those typically considered in the literature.
Some Improved Methods of Handling Groceries in Self-Service Retail Food Stores
Creators: name: Harwell, E. M.
name: Shaffer, Paul F.
name: Harwell, E. M.
name: Shaffer, Paul F.
Publisher: name: Unknown
Year: 1952
Subjects: Labor and Human Capital
Productivity Analysis
Research and Development/Tech Change/Emerging Technologies
Research Methods/ Statistical Methods

description: Excerpt from the report Summary: The use of proper methods, equipment, and layout in receiving, checking in, price marking, and stocking groceries in the retail food stores studied increased productivity in these operations from 67 to 87 percent. About one-third of the total man-hours in these stores were spent in the handling of grocery department items (all items sold in retail food stores except fresh fruits and vegetables, fresh and frozen meats, and dairy products). The checking-out operation is not considered a part of the grocery-department operation and therefore was not included in this analysis. The four functions studied accounted for three-fourths of the total man-hour requirements of the grocery department. Motion and time-study techniques were used to measure productivity on these functions as they were being performed before the study was made, and an attempt was then made to increase productivity in each function through the development of improved handling methods, equipment, and layout.
Constant scalar curvature hypersurfaces in extended Schwarzschild space-time
Creators: name: Pareja, M. J.
name: Frauendiener, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a class of spherically symmetric hypersurfaces in the Kruskal extension of the Schwarzschild space-time. The hypersurfaces have constant negative scalar curvature, so they are hyperboloidal in the regions of space-time which are asymptotically flat.
description: 15 pages, 7 figures, uses amsart
Scale-dependent Rayleigh-Taylor dynamics with variable acceleration by group theory approach
Creators: name: Abarzhi, Snezhana
name: Williams, Kurt
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: This work focuses on Rayleigh-Taylor instability (RTI)driven by acceleration with power-law time-dependence. We review the existing theoretical approaches, apply the group theory approach to solve this long-standing problem, and yield the unified framework for the scale-dependent dynamics of Rayleigh-Taylor (RT) bubbles and RT spikes. For the early-time linear dynamics we provide the dependence of RTI evolution on the acceleration parameters and the initial conditions. For the late-time nonlinear dynamics, we find a continuous family of asymptotic solutions, directly link the interface velocity to the interface morphology and the interfacial shear, derive solutions for the regular bubbles and for the singular spikes, and study stability of these solutions. The properties of special nonlinear solutions in the RT family are scrupulously described, including the critical, the Taylor, the Layzer-drag, and the Atwood solutions. It is shown that the fastest Atwood bubble is regular and stable, and the fastest Atwood spike is singular and unstable. The essentially multi-scale and interfacial character of RT dynamics is demonstrated. The former can be understood by viewing RT coherent structure of bubbles and spikes as a standing wave with the growing amplitude. The latter implies that RT flow has effectively no motion of the fluids away from the interface and has intense motion of the fluids near the interface, with shear-driven vortical structures appearing at the interface. Our theory agrees with available observations, and elaborates extensive benchmarks for future research and for better understanding of RT driven phenomena in plasmas.
Field induced superconductivity with enhanced and tunable paramagnetic limit
Creators: name: Buzdin, A.
name: Tollis, S.
name: Cayssol, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We demonstrate that in a superconducting multilayered system with alternating interlayer coupling a new type of nonuniform superconducting state can be realized under in-plane magnetic field. The Zeeman effect in this state is compensated by the energy splitting between bonding and antibonding levels. Such compensation mechanism at low temperature leads to the field-induced superconductivity. We discuss the conditions for the experimental observation of the predicted phenomena.
description: 5 pages, 4 figures included
Computing stationary free-surface shapes in microfluidics
Creators: name: Schindler, M.
name: Talkner, P.
name: Hanggi, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A finite-element algorithm for computing free-surface flows driven by arbitrary body forces is presented. The algorithm is primarily designed for the microfluidic parameter range where (i) the Reynolds number is small and (ii) force-driven pressure and flow fields compete with the surface tension for the shape of a stationary free surface. The free surface shape is represented by the boundaries of finite elements that move according to the stress applied by the adjacent fluid. Additionally, the surface tends to minimize its free energy and by that adapts its curvature to balance the normal stress at the surface. The numerical approach consists of the iteration of two alternating steps: The solution of a fluidic problem in a prescribed domain with slip boundary conditions at the free surface and a consecutive update of the domain driven by the previously determined pressure and velocity fields. ...
description: Revised version
Compound conditionals, Fréchet-Hoeffding bounds, and Frank t-norms
Creators: name: Gilio, Angelo
name: Sanfilippo, Giuseppe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: In this paper we consider compound conditionals, Fréchet-Hoeffding bounds and the probabilistic interpretation of Frank t-norms. By studying the solvability of suitable linear systems, we show under logical independence the sharpness of the Fréchet-Hoeffding bounds for the prevision of conjunctions and disjunctions of $n$ conditional events. We study the set of all coherent prevision assessments on a family containing $n$ conditional events and their conjunction, by verifying that it is convex. We discuss the case where the prevision of conjunctions is assessed by Lukasiewicz t-norms and we give explicit solutions for the linear systems; then, we analyze a selected example. We obtain a probabilistic interpretation of Frank t-norms and t-conorms as prevision of conjunctions and disjunctions of conditional events, respectively. Then, we characterize the sets of coherent prevision assessments on a family containing $n$ conditional events and their conjunction, or their disjunction, by using Frank t-norms, or Frank t-conorms. By assuming logical independence, we show that any Frank t-norm (resp., t-conorm) of two conditional events $A|H$ and $B|K$, $T_λ(A|H,B|K)$ (resp., $S_λ(A|H,B|K)$), is a conjunction $(A|H)\wedge (B|K)$ (resp., a disjunction $(A|H)\vee (B|K)$). By considering a family $\mathcal{F}$ containing three conditional events, their conjunction, and all pairwise conjunctions we give some results on Frank t-norms and coherence of the prevision assessments on $\mathcal{F}$. By assuming logical independence, we show that it is coherent to assess the previsions of all the conjunctions by means of Minimum and Product t-norms. We verify by a counterexample that, when the previsions of conjunctions are assessed by the Lukasiewicz t-norm, coherence is not assured.
Learning considered within a cultural context : Confucian and Socratic approaches
Creators: name: Tweed, Roger G.
Publisher: name: University of British Columbia
Year: 2009

description: A Confucian-Socratic framework provides a structure for analyzing culture-influenced aspects of academic learning. It is argued that these ancient exemplars model approaches to learning that continue to differentiate students within a modern Canadian postsecondary context. Specifically, it is argued that Chinese cultural influence increases the likelihood that a student will report Confucian learning beliefs and behaviors and that Western cultural influence increases the likelihood that a student will report Socratic learning beliefs and behaviors. Socrates valued private and public questioning of widely accepted knowledge and expected students to evaluate others' beliefs and to generate and consider their own hypotheses. Confucius valued effortful and pragmatic acquisition of essential knowledge. Confucius also valued poetic summary and behavioral reform. Two self-report studies, one (pilot) expert study, and one work sample study assess the utility of this framework in a Canadian context. The self-report studies provide evidence that the framework is reflective of modern cultural differences as expressed in a Western postsecondary context; however, the work sample study produced mainly null results. Consequences of cultural differences in Western postsecondary contexts are discussed.
Dusty Sources at the Galactic Center: The N- and Q-band view with VISIR
Creators: name: Viehmann, T.
name: Eckart, A.
name: Schoedel, R.
name: Pott, J. -U.
name: Moultaka, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present mid-infrared N- and Q-band photometry of the Galactic Center from images obtained with the mid-infrared camera VISIR at the ESO VLT in May 2004. The high resolution and sensitivity possible with VISIR enables us to investigate a total of over 60 point-like sources, an unprecedented number for the Galactic Center at these wavelengths. Combining these data with previous results at shorter wavelengths (Viehmann et al. 2005) enables us to construct SEDs covering the H- to Q-band regions of the spectrum, i.e. 1.6 to 19.5 $μ$m. We find that the SEDs of certain types of Galactic Center sources show characteristic features. We can clearly distinguish between luminous Northern Arm bow-shock sources, lower luminosity bow-shock sources, hot stars, and cool stars. This characterization may help clarify the status of presently unclassified sources.
description: 18 pages, 4 figures, 1 table, accepted for publication in the Astrophysical Journal
Integrated management of multiple aquifers with subsurface flows and inter-district water transport
Creators: name: Pitafi, Basharat A.K.
name: Roumasset, James A.
name: Pitafi, Basharat A.K.
name: Roumasset, James A.
Publisher: name: Unknown
Year: 2006
Subjects: Resource /Energy Economics and Policy

description: Many places, including the island of Oahu in Hawaii, have a number of groundwater aquifers. Consumers located in one aquifer area can be supplied from water extracted and transported from another aquifer if this results in cost savings over local extraction. Incorporating such interdistrict transport is necessary for a fully efficient allocation framework. We derive efficient water management and pricing plans for two of the four aquifer zones in the Central Oahu corridor, taking into account the possibility of inter-district water trade. Efficient management requires not only intertemporal efficiency within zones but also spatial efficiency between zones, where water is transferred from one zone to the next if, without the transfer, the intertemporal efficiency price in the receiving zone is greater than the efficiency price in the source zone plus the cost of transfer.
Problems of Establishing a Consumer Panel in the New York Metropolitan Area
Creators: name: Industrial Surveys Company
name: Industrial Surveys Company
Publisher: name: Unknown
Year: 1952
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Research Methods/ Statistical Methods

description: Excerpts from the Foreword: In cooperation with various segments of the fruit industry, the Department of Agriculture contracted in 1999 with the Industrial Surveys Company for monthly data that would show consumer purchases of specified fruit and fruit products. The data were to include information showing amounts bought, prices paid, average size of purchase, and percentage of households purchasing. Quarterly tabulations of these data by regions and types of outlet are released in separate reports. Less frequently, reports are issued which present buying practices by various family characteristics. This bulletin presents the results of an attempt to obtain the cooperation of a probability sample of 546 households in the New York metropolitan area, which is recognized as one of the most difficult areas in the United States with respect to obtaining a high rate of response in surveys.
A Duration Analysis of Poverty Transitions in Rural Kenya
Creators: name: Kirimi, Lilian
name: Sindi, Kirimi
name: Kirimi, Lilian
name: Sindi, Kirimi
Publisher: name: Unknown
Year: 2006
Subjects: Community/Rural/Urban Development

description: Dynamics of falling into and out of poverty are examined using a discrete time hazard approach, using a panel dataset of Kenyan rural households. Poverty incidence shows some level of decline over the panel period. However, the factors that determine whether a households slips into poverty or escapes poverty do not appear to be radically different. Access to more of financial resources and by association better quality farm inputs may be valuable policy options that will prevent rural farm households from falling into poverty while helping others escape poverty.
description: Replaced with revised version of paper 10/04/07.
Dark soliton past a finite-size obstacle
Creators: name: Bilas, Nicolas
name: Pavloff, Nicolas
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We consider the collision of a dark soliton with an obstacle in a quasi-one-dimensional Bose condensate. We show that in many respects the soliton behaves as an effective classical particle of mass twice the mass of a bare particle, evolving in an effective potential which is a convolution of the actual potential describing the obstacle. Radiative effects beyond this approximation are also taken into account. The emitted waves are shown to form two counterpropagating wave packets, both moving at the speed of sound. We determine, at leading order, the total amount of radiation emitted during the collision and compute the acceleration of the soliton due to the collisional process. It is found that the radiative process is quenched when the velocity of the soliton reaches the velocity of sound in the system.
A quantum formalism for events and how time can emerge from its foundations
Creators: name: Dias, Eduardo O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Although time is one of our most intuitive physical concepts, its understanding at the fundamental level is still an open question in physics. For instance, time in quantum mechanics and general relativity are two distinct and incompatible entities. While relativity deals with events (points in spacetime), with time being observer-dependent and dynamical, quantum mechanics describes physical systems by treating time as an independent parameter. To resolve this conflict, in this work, we extend the classical concept of an event to the quantum domain by defining an event as a transfer of information between physical systems. Then, by describing the universe from the perspective of a certain observer, we introduce quantum states of events with space-time-symmetric wave functions that predict the joint probability distribution of a measurement (observation) at $ (t, {\vec x}) $. Under these circumstances, we propose that a well-defined instant of time, like any other observable, arises from a single event, thus being an observer-dependent property. As a result, a counterfactual asymmetry along a particular sequence of events within a stationary quantum state gives rise to the flow of time as being successive "snapshots" from the observer's perspective. In this proposal, it is the many distinguishable states in which the observer stores information that makes the existence of time possible.
description: 17 pages
Kantzenbach, Friedrich Wilhelm: Gestalten und Typen des Neuluthertums
Creators: name: Gassmann, Günther
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 17 Nr. 4 (1968): Ökumenische Rundschau, Band 17, Heft 4
ESTIMATING SITE-SPECIFIC NITROGEN CROP RESPONSE FUNCTIONS: A CONCEPTUAL FRAMEWORK AND GEOSTATISTICAL MODEL
Creators: name: Malzer, Gary L.
name: Hurley, Terrance M.
name: Kilian, Bernard
name: Malzer, Gary L.
name: Hurley, Terrance M.
name: Kilian, Bernard
Publisher: name: Unknown
Year: 2004
Subjects: Crop Production/Industries

description: Confirming the precision agriculture hypothesis for variable rate nitrogen applications (VRA) is challenging. To confront this challenge, researchers have used increasingly sophisticated statistical models to estimate and compare site-specific crop response functions (SSCRFs). While progress has been made, it has been hampered by the lack of a conceptual framework to guide the development of appropriate statistical models. This paper provides such a framework and demonstrates its utility by developing a heteroscedastic, fixed and random effects, geostatistical model to test if VRA can increase nitrogen returns. The novelty of the model is the inclusion of site, spatial, treatment, and treatment strip heteroscedasticity and correlation. Applied to data collected in 1995 from two corn nitrogen response experiments in South Central Minnesota, results demonstrate the importance of including site, spatial, treatment, and treatment strip effects in the estimation of SSCRFs. Results also indicate a significant potential for VRA to increase nitrogen returns and that these potential returns increase as the area of the management unit decreases. At one location, there was greater than a 95% chance that VRA could have increased profitability if the cost of implementing VRA was less than 14.5 $ ha-1. At the other location, if implementation costs were less than 48.3 $ ha-1, there was greater than a 95% chance of increased profitability.
Improving the efficiency of the detection of gravitational wave signals from inspiraling compact binaries: Chebyshev interpolation
Creators: name: Mitra, S.
name: Dhurandhar, S. V.
name: Finn, L. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Inspiraling compact binaries are promising sources of gravitational waves for ground and space-based laser interferometric detectors. The time-dependent signature of these sources in the detectors is a well-characterized function of a relatively small number of parameters; thus, the favored analysis technique makes use of matched filtering and maximum likelihood methods. Current analysis methodology samples the matched filter output at parameter values chosen so that the correlation between successive samples is 97% for which the filtered output is closely correlated. Here we describe a straightforward and practical way of using interpolation to take advantage of the correlation between the matched filter output associated with nearby points in the parameter space to significantly reduce the number of matched filter evaluations without sacrificing the efficiency with which real signals are recognized. Because the computational cost of the analysis is driven almost exclusively by the matched filter evaluations, this translates directly into an increase in computational efficiency, which in turn, translates into an increase in the size of the parameter space that can be analyzed and, thus, the science that can be accomplished with the data. As a demonstration we compare the present "dense sampling" analysis methodology with our proposed "interpolation" methodology, restricted to one dimension of the multi-dimensional analysis problem. We find that the interpolated search reduces by 25% the number of filter evaluations required by the dense search with 97% correlation to achieve the same efficiency of detection for an expected false alarm probability. Generalized to higher dimensional space of a generic binary including spins suggests an order of magnitude increase in computational efficiency.
description: 23 pages, 5 figures, submitted to Phys. Rev. D
Constraints on UED KK-neutrino dark matter from magnetic dipole moments
Creators: name: Flacke, Thomas
name: Maybury, David W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Generically, universal extra dimension (UED) extensions of the standard model predict the stability of the lightest Kaluza-Klein (KK) particle and hence provide a dark matter candidate. For UED scenarios with one extra dimension, we model-independently determine the size of the induced dimension-five magnetic dipole moment of the KK-neutrino, $ν^{(1)}$. We show that current observational bounds on the interactions of dipole dark matter place constraints on UED models with KK-neutrino dark matter.
description: References added, figures altered, discussion of results revised and expanded
Quantum Inverse Scattering Method and (Super)Conformal Field Theory
Creators: name: Kulish, Petr P.
name: Zeitlin, Anton M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper we consider the possibility of application of the quantum inverse scattering method for studying the superconformal field theory and it's integrable perturbations. The classical limit of the considered constructions is based on $\hat{osp}(1|2)$ super-KdV hierarchy. The quantum counterpart of the monodromy matrix corresponding to the linear problem associated with the L-operator is introduced. Using the explicit form of the irreducible representations of $\hat{osp}_q(1|2)$, the ``fusion relations'' for the transfer-matrices (i.e. the traces of the monodromy matrices in different representations) are obtained.
description: LaTeX2e, 15 pages, Theor. Math. Phys., 2005, in press
A Hele-Shaw limit without monotonicity
Creators: name: Guillen, Nestor
name: Kim, Inwon
name: Mellet, Antoine
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35R35, 35Q92, 76S05, 76D27

description: We study the incompressible limit of the porous medium equation with a right hand side representing either a source or a sink term, and an injection boundary condition. This model can be seen as a simplified description of non-monotone motions in tumor growth and crowd motion, generalizing the congestion-only motions studied in recent literature (\cite{AKY}, \cite{PQV}, \cite{KP}, \cite{MPQ}). We characterize the limit density, which solves a free boundary problem of Hele-Shaw type in terms of the limit pressure. The novel feature of our result lies in the characterization of the limit pressure, which solves an obstacle problem at each time in the evolution
description: 33 pages, 2 figures
Flue-Cured Tobacco: Price Differences Among Types 11(a)-13
Creators: name: Rockwell, George R.
name: Rockwell, George R.
Publisher: name: Unknown
Year: 1952
Subjects: subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Marketing
subject: FOS: Economics and business

description: Excerpt from the report Summary: Two aspects of flue-cured prices are given attention in this report. One is the extent to which the average price of a group of United States grades differs from one type of flue-cured tobacco to another. These comparisons show on the basis of a whole season the size and direction of price differences among belts. As the price averages are for groups of grades identical in each belt, it may be presumed that differences in price are not caused by differences in quality. The second aspect is the way in which the average price of a group of U. S. grades of a single type varies during the course of a marketing season and the factors that are apparently associated with this variation. This also permits price comparisons among belts for various periods within a season. In this connection, the influence on flue-cured prices of changing quantities of certain qualities of leaf sold in the various flue-cured belts from week to week in the course of the marketing season was investigated.
Chrysostomos, P. Joh.: Kleine Kirchengeschichte Rußlands nach 1917
Creators: name: Schaeder, Hildegard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 17 Nr. 4 (1968): Ökumenische Rundschau, Band 17, Heft 4
Burst Detector Sensitivity: Past, Present & Future
Creators: name: Band, David L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I compare the burst detection sensitivity of CGRO's BATSE, Swift's BAT, the GLAST Burst Monitor (GBM) and EXIST as a function of a burst's spectrum and duration. A detector's overall burst sensitivity depends on its energy sensitivity and set of accumulations times Delta t; these two factors shape the detected burst population. For example, relative to BATSE, the BAT's softer energy band decreases the detection rate of short, hard bursts, while the BAT's longer accumulation times increase the detection rate of long, soft bursts. Consequently, Swift is detecting long, low fluence bursts (2-3x fainter than BATSE).
description: To appear in the proceedings of the 16th Annual October Astrophysics Conference in Maryland, "Gamma Ray Bursts in the Swift Era", Washington DC., November 29-December 2, 2005, 4 pages, 3 figures
Subfactors and 1+1-dimensional TQFTs
Creators: name: Kodiyalam, Vijay
name: Pati, Vishwambhar
name: Sunder, V. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Algebra (math.QA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L37

description: We construct a certain `cobordism category' ${\cal D}$ whose morphisms are suitably decorated cobordism classes between similarly decorated closed oriented 1-manifolds, and show that there is essentially a bijection between (1+1-dimensional) unitary topological quantum field theories (TQFTs) defined on ${\cal D}$, on the one hand, and Jones' subfactor planar algebras, on the other.
description: 57 pages, 9 figures
Involvement of CDK/cyclin motif in ciliate cell cycle regulation
Creators: name: Zhang, Hong
Publisher: name: University of British Columbia
Year: 2009

description: The eukaryotic cell cycle is controlled by oscillation of the activity of cyclindependent protein kinases (Cdks). Ciliates, with their elaborate cellular structures and unusual cell cycle organization, present interesting subjects for cell cycle studies. A novel Cdk termed PtCdk2 was isolated in Paramecium tetraurelia, and with PtCdkl and PtCdk3 forms the P. tetraurelia Cdk family. The lack of affinity of PtCdk2 for yeast p13[sup suc1] protein distinguishes it from PtCdk3, the only Paramecium Cdk so far displaying p13[sup suc1] binding. PtCdk2 displays a cell cycle-stage dependent histone HI kinase activity, peaking at the end of the vegetative cell cycle. Coincidence of the kinase activity peaks of PtCdkl, PtCdk2 and PtCdk3 with initiation of macronuclear DNA synthesis (IDS), cell division and point of commitment to cell division (PCD), respectively, suggests they play different roles in cell cycle control. Consistent with the conservation of cyclin-binding domains in the P. tetraurelia Cdks, two mitotic cyclin homologues, PtCycl and PtCyc2, have been identified. This is the first time that cyclin genes have been cloned in ciliates. Both PtCycl and PtCyc2 proteins show characteristic patterns of accumulation and destruction during the vegetative cell cycle, with PtCycl peaking at the PCD, and PtCyc2 reaching the maximal level at the end of the cell cycle. Results of coimmunoprecipitation experiments indicate that PtCycl and PtCyc2 are associated with PtCdk3 and PtCdk2, respectively. Study on the subcellular localization of TtCdkl in Tetrahymena thermophila by immunofluorescence microscopy reveals its association with the membrane-skeletal domains that surround mature but not nascent basal bodies in the cell cortex, suggesting that TtCdkl plays a role in the regulation of formation of the complex membrane-skeletal layer of this cell during division-related cortical morphogenesis. A partial TtCDKl knockout cell line constructed through somatic biolistic transformation resulted in a reduction of the regularity of the rows of basal bodies plus an additional effect on chromatin condensation in both macro- and micronuclei. My work not only extends the ubiquity of Cdk/cyclin motif in the eukaryotic cell cycle regulation to ciliates, but also reveals interesting and unique roles of these molecules in cell cycle control in these organisms.
Two Distinct Electronic Contributions in the Fully Symmetric Raman Response of High $T_{c}$ Cuprates
Creators: name: Tacon, M. Le
name: Sacuto, A.
name: Colson, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show by non resonant effect in HgBa$_2$CuO$_{4+δ}$ (Hg-1201)and by Zn substitutions in YBa$_2$Cu$_3$O$_{7-δ}$ (Y-123) compounds that the fully symmetric Raman spectrum has two distinct electronic contributions. The A$_{1g}$ response consists in the superconducting pair breaking peak at the 2$Δ$ energy and a collective mode close to the magnetic resonance energy. These experimental results reconcile the \textit{d-wave} model to the A$_{1g}$ Raman response function in so far as a collective mode that is distinct from the pair breaking peak is present in the A$_{1g}$ channel.
description: 4 pages, 2 figures
Sobolev, Hardy, Gagliardo-Nirenberg and Caffarelli-Kohn-Nirenberg type inequalities for some fractional derivatives
Creators: name: Kassymov, Aidyn
name: Ruzhansky, Michael
name: Tokmagambetov, Niyaz
name: Torebek, Berikbol T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: In this paper we show different inequalities for fractional order differential operators. In particular, the Sobolev, Hardy, Gagliardo-Nirenberg and Caffarelli-Kohn-Nirenberg type inequalities for the Caputo, Riemann-Liouville and Hadamard derivatives are obtained. In addition, we show some applications of these inequalities.
description: 20 pages