cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The stability of MHD Taylor-Couette flow with current-free spiral magnetic fields between conducting cylinders
Creators: name: Ruediger, G.
name: Hollerbach, R.
name: Schultz, M.
name: Shalybkov, D. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the magnetorotational instability in cylindrical Taylor-Couette flow, with the (vertically unbounded) cylinders taken to be perfect conductors, and with externally imposed spiral magnetic fields. The azimuthal component of this field is generated by an axial current inside the inner cylinder, and may be slightly stronger than the axial field. We obtain an instability beyond the Rayleigh line, for Reynolds numbers of order 1000 and Hartmann numbers of order 10, and independent of the (small) magnetic Prandtl number. For experiments with R_out = 2 R_in = 10 cm and Omega_out = 0.27 Omega_in, the instability appears for liquid sodium for axial fields of ~20 Gauss and axial currents of \~1200 A. For gallium the numbers are ~50 Gauss and ~3200 A. The vertical cell size is about twice the cell size known for nonmagnetic experiments.
description: 5 pages, 7 figures, submitted to Astronomische Nachrichten
A RELATIVE EFFICIENCY ANALYSIS OF FARMLAND PRESERVATION PROGRAMS
Creators: name: Lynch, Lori
name: Musser, Wesley N.
name: Lynch, Lori
name: Musser, Wesley N.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Productivity Analysis
subject: Resource /Energy Economics and Policy
subject: farmland preservation
subject: efficiency analysis

description: Using an inverted Farrell methodology, we analyze the relative efficiency of five agricultural land preservation programs in three counties of Maryland in achieving the stated goals of maximum acreage, threatened parcels, and productive farms. Regression analysis is then used to compare the programs both within and between counties.
Fifth-neighbor spin-spin correlator for the anti-ferromagnetic Heisenberg chain
Creators: name: Sato, Jun
name: Shiroishi, Masahiro
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Algebra (math.QA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the generating function of the spin-spin correlation functions in the ground state of the anti-ferromagnetic spin-1/2 Heisenberg chain without magnetic field. We have found its fundamental functional relations from those for general correlation functions, which originate in the quantum Knizhink-Zamolodchikov equation. Using these relations, we have calculated the explicit form of the generating functions up to n=6. Accordingly we could obtain the spin-spin correlator up to k=5.
description: 10 pages
DO PRODUCER RISK ATTITUDES EFFECT THE SIZING OF ON-FARM HARVEST, DRYING, AND STORAGE SYSTEMS?
Creators: name: Davis, Todd D.
name: Patrick, George F.
name: Davis, Todd D.
name: Patrick, George F.
Publisher: name: Unknown
Year: 1999
Subjects: Research Methods/ Statistical Methods
Risk and Uncertainty

description: An on-farm harvest, drying and storage system simulation model is used to determine how producers' risk attitudes effect combine and dryer capacity. Stochastic dominance determines the risk efficient combine and dryer set for a 2000 acre farm in central Indiana. Capacities decrease as risk aversion increases.
Laser cooling of trapped ytterbium ions with an ultraviolet diode laser
Creators: name: Kielpinski, D.
name: Cetina, M.
name: Cox, J. A.
name: Kaertner, F. X.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate an ultraviolet diode laser system for cooling of trapped ytterbium ions. The laser power and linewidth are comparable to previous systems based on resonant frequency doubling, but the system is simpler, more robust, and less expensive. We use the laser system to cool small numbers of ytterbium ions confined in a linear Paul trap. From the observed spectra, we deduce final temperatures < 270 mK.
description: submitted to Opt. Lett
Interpretable Time Series Classification using Linear Models and Multi-resolution Multi-domain Symbolic Representations
Creators: name: Nguyen, Thach Le
name: Gsponer, Severin
name: Ilie, Iulia
name: O'Reilly, Martin
name: Ifrim, Georgiana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The time series classification literature has expanded rapidly over the last decade, with many new classification approaches published each year. Prior research has mostly focused on improving the accuracy and efficiency of classifiers, with interpretability being somewhat neglected. This aspect of classifiers has become critical for many application domains and the introduction of the EU GDPR legislation in 2018 is likely to further emphasize the importance of interpretable learning algorithms. Currently, state-of-the-art classification accuracy is achieved with very complex models based on large ensembles (COTE) or deep neural networks (FCN). These approaches are not efficient with regard to either time or space, are difficult to interpret and cannot be applied to variable-length time series, requiring pre-processing of the original series to a set fixed-length. In this paper we propose new time series classification algorithms to address these gaps. Our approach is based on symbolic representations of time series, efficient sequence mining algorithms and linear classification models. Our linear models are as accurate as deep learning models but are more efficient regarding running time and memory, can work with variable-length time series and can be interpreted by highlighting the discriminative symbolic features on the original time series. We show that our multi-resolution multi-domain linear classifier (mtSS-SEQL+LR) achieves a similar accuracy to the state-of-the-art COTE ensemble, and to recent deep learning methods (FCN, ResNet), but uses a fraction of the time and memory required by either COTE or deep models. To further analyse the interpretability of our classifier, we present a case study on a human motion dataset collected by the authors. We release all the results, source code and data to encourage reproducibility.
description: arXiv admin note: substantial text overlap with arXiv:1808.04022
Policies to enable children’s voice for healthy neighbourhoods and communities: a systematic mapping review and case study
Creators: name: Sullivan, Eve
name: Egli, Victoria
name: Donnellan, Niamh
name: Smith, Melody
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: The purpose of this research was to gain an understanding of child consultation in policies for healthy environments in the international evidence base, and examine national and local-level policy and processes regarding child consultation. A systematic mapping review was conducted and grey literature was sought from Aotearoa New Zealand urban and neighbourhood planning, local board, and transport authority websites. A local exemplar project (in Tāmaki Makaurau Auckland City) of child engagement in policy planning was presented. Twenty-four articles met the inclusion criteria for the literature search. The literature was synthesised into three broad themes: co-design and planning processes, green space, and physical activity and body size. Despite the existence of high-level national policies, there was little regional consistency. The ‘Healthy Puketāpapa’ project presented provided a replicable model for high-quality, local consultation processes. Child consultation is a method through which decision-makers can respect children as citizens, and the process has been found to be beneficial to all stakeholders involved. This research provides an international perspective of literature, and a methodology that can be replicated in other countries and regions for comparability.
AN ECONOMIC ANALYSIS OF RIPARIAN LANDOWNERS' WILLINGNESS TO PARTICIPATE IN OREGON'S CONSERVATION RESERVE ENHANCEMENT PROGRAM
Creators: name: Kingsbury, Leigh
name: Boggess, William G.
name: Kingsbury, Leigh
name: Boggess, William G.
Publisher: name: Unknown
Year: 1999
Subjects: Environmental Economics and Policy
Land Economics/Use

description: A contingent valuation survey was conducted in two diverse Oregon counties to estimate potential enrollment of framed or grazed land in a riparian buffer strip program. Landowner preferences for various program components were elicited and demonstrate the need to carefully design conservation incentives to encourage participation.
About helicity conservation in gauge boson scattering at high energy
Creators: name: Gounaris, G. J.
name: Renard, F. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We remark that the high energy gauge boson scattering processes involving two-body initial and final states, satisfy certain selection rules described as helicity conservation of the \underline{gauge boson} amplitudes (GBHC). These rules are valid at Born level, as well as at the level of the leading and sub-leading 1-loop logarithmic corrections, in both the Standard Model (SM) and the Minimal Supersymmetric Standard Model (MSSM). A "fermionic equivalence" theorem is also proved, which suggests that GBHC is valid at all orders in MSSM at sufficiently high energies, where the mass suppressed contributions are neglected.
description: 7 pages, 2 figures, version to appear in Phys. Rev. Letters
Taking Modality-free Human Identification as Zero-shot Learning
Creators: name: Liu, Zhizhe
name: Zhang, Xingxing
name: Zhu, Zhenfeng
name: Zheng, Shuai
name: Zhao, Yao
name: Cheng, Jian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Human identification is an important topic in event detection, person tracking, and public security. There have been numerous methods proposed for human identification, such as face identification, person re-identification, and gait identification. Typically, existing methods predominantly classify a queried image to a specific identity in an image gallery set (I2I). This is seriously limited for the scenario where only a textual description of the query or an attribute gallery set is available in a wide range of video surveillance applications (A2I or I2A). However, very few efforts have been devoted towards modality-free identification, i.e., identifying a query in a gallery set in a scalable way. In this work, we take an initial attempt, and formulate such a novel Modality-Free Human Identification (named MFHI) task as a generic zero-shot learning model in a scalable way. Meanwhile, it is capable of bridging the visual and semantic modalities by learning a discriminative prototype of each identity. In addition, the semantics-guided spatial attention is enforced on visual modality to obtain representations with both high global category-level and local attribute-level discrimination. Finally, we design and conduct an extensive group of experiments on two common challenging identification tasks, including face identification and person re-identification, demonstrating that our method outperforms a wide variety of state-of-the-art methods on modality-free human identification.
description: This manuscript has been accepted by IEEE Transactions on Circuits and Systems for Video Technology
EVALUATING ALTERNATIVE FARMING SYSTEMS: A FUZZY MADM APPROACH
Creators: name: Marks, Leonie A.
name: Dunn, Elizabeth G.
name: Marks, Leonie A.
name: Dunn, Elizabeth G.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Institutional and Behavioral Economics
subject: Research Methods/ Statistical Methods
subject: fuzzy logic
subject: fuzzy sets
subject: multiple attribute decision making
subject: MADM

description: This paper develops a decision support method that integrates measures of achievement in the economic, environmental, and social aspects of farming. The decision support method combines multiple attribute decision making (MADM) with fuzzy logic. The fuzzy MADM model fully ranks decision alternatives relative to the preferences of decision makers and overcomes several problems inherent in other MADM approaches. It is concluded that fuzzy MADM can improve decision making on the farm.
Strange form factors and Chiral Perturbation Theory
Creators: name: Kubis, Bastian
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review the contributions of Chiral Perturbation Theory to the theoretical understanding or not-quite-yet-understanding of the nucleon matrix elements of the strange vector current.
description: 4 pages, 6 figures, presented at the International Workshop on Parity Violation and Hadronic Structure (PAVI04), Grenoble, France, 8-11 Jun 2004
Reviewing the impacts of community energy initiatives in New Zealand
Creators: name: Roberts, Ryan
name: Brent, Alan
name: Hinkley, Jim
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: The New Zealand government has earmarked community energy as an investment mechanism that could assist the country in reaching its climate change goals, as well as lead to local benefits for its citizens. The objective of this paper is to identify what community energy initiatives are occurring in New Zealand, and the respective impacts that have arisen. A desk survey was undertaken, through an academic database and internet search to collect relevant resources and data. The country has a history of community energy initiatives; however, data on the impacts of community energy initiatives are scarce, at both a local and national level. The study also found diversity in the communities that are, or possibly could, benefit from community energy projects, each with differing motivations for participation. A national understanding of the successful impacts of community energy initiatives is needed, as well as more monitoring and analysis on the impacts of current projects. Ascertaining the true value of community energy is a complex task, but vital should development of these projects be pursued.
Learning Opinion Dynamics From Social Traces
Creators: name: Monti, Corrado
name: Morales, Gianmarco De Francisci
name: Bonchi, Francesco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: J.4; G.3; I.6

description: Opinion dynamics - the research field dealing with how people's opinions form and evolve in a social context - traditionally uses agent-based models to validate the implications of sociological theories. These models encode the causal mechanism that drives the opinion formation process, and have the advantage of being easy to interpret. However, as they do not exploit the availability of data, their predictive power is limited. Moreover, parameter calibration and model selection are manual and difficult tasks. In this work we propose an inference mechanism for fitting a generative, agent-like model of opinion dynamics to real-world social traces. Given a set of observables (e.g., actions and interactions between agents), our model can recover the most-likely latent opinion trajectories that are compatible with the assumptions about the process dynamics. This type of model retains the benefits of agent-based ones (i.e., causal interpretation), while adding the ability to perform model selection and hypothesis testing on real data. We showcase our proposal by translating a classical agent-based model of opinion dynamics into its generative counterpart. We then design an inference algorithm based on online expectation maximization to learn the latent parameters of the model. Such algorithm can recover the latent opinion trajectories from traces generated by the classical agent-based model. In addition, it can identify the most likely set of macro parameters used to generate a data trace, thus allowing testing of sociological hypotheses. Finally, we apply our model to real-world data from Reddit to explore the long-standing question about the impact of backfire effect. Our results suggest a low prominence of the effect in Reddit's political conversation.
description: Published at KDD2020
The Abelian Embedding Formulation of the Stueckelberg Model and its Power-counting Renormalizable Extension
Creators: name: Quadri, Andrea
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We elucidate the geometry of the polynomial formulation of the non-abelian Stueckelberg mechanism. We show that a natural off-shell nilpotent BRST differential exists allowing to implement the constraint on the sigma field by means of BRST techniques. This is achieved by extending the ghost sector by an additional U(1) factor (abelian embedding). An important consequence is that a further BRST-invariant but not gauge-invariant mass term can be written for the non-abelian gauge fields. As all versions of the Stueckelberg theory, also the abelian embedding formulation yields a non power-counting renormalizable theory in D=4. We then derive its natural power-counting renormalizable extension and show that the physical spectrum contains a physical massive scalar particle. Physical unitarity is also established. This model implements the spontaneous symmetry breaking in the abelian embedding formalism.
description: LATEX, 30 pages
Effects of R-parity violation in unpolarized top quark decay into polarized W-boson
Creators: name: Nie, Yi Min
name: Li, Chong Sheng
name: Li, Qiang
name: Liu, Jian Jun
name: Zhao, Jun
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate one-loop R-parity violating corrections to the top quark decay into a bottom quark and a polarized W-gauge boson. The corrections are presented according to the total corrections, the longitudinal corrections and the transverse corrections, respectively. We compared our results with the ${\cal O}(α_s)$ QCD corrections, the ${\cal O}(α)$ electroweak (EW) and finite width corrections, and also the supersymmetric (SUSY) corrections with R-parity conservation, respectively.
description: 25 pages, 13 figures
ECONOMIC IMPACTS OF THE FINANCIAL CRISIS ON THE KOREAN FARM AND NON-FARM SECTORS
Creators: name: Han, Doo Bong
name: Han, Doo Bong
Publisher: name: Unknown
Year: 1999
Subjects: subject: Agricultural Finance
subject: Research Methods/ Statistical Methods
subject: Financial Crisis
subject: Macroeconomic Model

description: The objective of this study is to construct a macroeconomic model emphasizing agriculture and analyze the economic impacts of the financial crisis on the Korean farm and non-farm sectors. The simulation results show that financial shocks have great impacts on general economy and change the resource allocation within and between farm and non-farm sectors.
Quasinormal modes of black holes with a scalar hair in Einstein-Maxwell-dilaton theory
Creators: name: Rincon, Angel
name: Panotopoulos, Grigoris
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute the quasinormal frequencies for scalar perturbations of hairy black holes in four-dimensional Einstein-Maxwell-dilaton theory assuming a non-trivial scalar potential for the dilaton field. We investigate the impact on the spectrum of the angular degree, the overtone number, the charges of the black hole as well as the magnitude of the scalar potential. All modes are found to be stable. Our numerical results are summarized in tables, and for better visualization, we show them graphically as well.
description: 12 pages, 2 figures, 12 tables. Accepted for publication in Physica Scripta. arXiv admin note: text overlap with arXiv:2006.11889
НАНОФИЗИКАНИ ЎҚИТИШДА МАХСУС ЛАБОРАТОРИЯ УСУЛЛАРИНИ ҚЎЛЛАНИШИ
Creators: name: Насиба Қутбиддиновна Ходжаева
name: Дилфуза Мелиевна Махмудова
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Нанофизика
лаборатория иши
электролиз
электроспиннинг
дзета-потенциал
наноқоплама
нанотола

description: Ушбу мақола нанофизикани ўқитишда илмий тадқиқот усулларини лаборатория ишлари сифатида қўллашга бағишланган. Унда фиброин биополимер асосида наноқопламалар шакллантиришнинг электролиз, нанотолали нотўқима материаллар олишнинг электроспиннинг усули ва “нанотола-ион” таъсирлашишини баҳолашнинг электроосмотик дзета-потенциал усулларини лабораторияда амалий қўллаш бўйича материаллар баѐн этилган
Birnbaum, Walter: Das Kultusproblem und die liturgische Bewegungen des 20. Jahrhunderts
Creators: name: Mumm, Reinhard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 15 Nr. 4 (1966): Ökumenische Rundschau, Band 15, Heft 4
USING LAND EQUITY TO PROVIDE A RETIREMENT INCOME
Creators: name: Ibendahl, Gregory A.
name: Isaacs, Steven G.
name: Ibendahl, Gregory A.
name: Isaacs, Steven G.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Consumer/Household Economics
subject: Land Economics/Use
subject: retirement
subject: land equity

description: Many retiring farmers will need to use their land equity to provide a retirement income. Based on a present value analysis, retiring farmers may either decide to sell or lease their land. The analysis is needed because taxes, liability issues, and goals of the farmer complicate the decision.
Energy spread minimization in a beam-driven plasma wakefield accelerator
Creators: name: Pompili, R.
name: Anania, M. P.
name: Behtouei, M.
name: Bellaveglia, M.
name: Biagioni, A.
name: Bisesto, F. G.
name: Cesarini, M.
name: Chiadroni, E.
name: Cianchi, A.
name: Costa, G.
name: Croia, M.
name: Del Dotto, A.
name: Di Giovenale, D.
name: Diomede, M.
name: Dipace, F.
name: Ferrario, M.
name: Giribono, A.
name: Lollo, V.
name: Magnisi, L.
name: Marongiu, M.
name: Mostacci, A.
name: Di Pirro, G.
name: Romeo, S.
name: Rossi, A. R.
name: Scifo, J.
name: Shpakov, V.
name: Vaccarezza, C.
name: Villa, F.
name: Zigler, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Next-generation plasma-based accelerators can push electron bunches to gigaelectronvolt energies within centimetre distances. The plasma, excited by a driver pulse, generates large electric fields that can efficiently accelerate a trailing witness bunch making possible the realization of laboratory-scale applications ranging from high-energy colliders to ultra-bright light sources. So far several experiments have demonstrated a significant acceleration but the resulting beam quality, especially the energy spread, is still far from state of the art conventional accelerators. Here we show the results of a beam-driven plasma acceleration experiment where we used an electron bunch as a driver followed by an ultra-short witness. The experiment demonstrates, for the first time, an innovative method to achieve an ultra-low energy spread of the accelerated witness of about 0.1%. This is an order of magnitude smaller than what has been obtained so far. The result can lead to a major breakthrough toward the optimization of the plasma acceleration process and its implementation in forthcoming compact machines for user-oriented applications.
СИНФДАН ТАШҚАРИ ИШЛАРНИ ТАШКИЛ ЭТИШ: УСУЛ ВА ШАКЛЛАР
Creators: name: Н. Пердешова
name: У. Ходжамқулов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: синфдан ташқари ишлар
ташкилотчи
ўқувчилар
тарбиявий фаолият
тарбиячи

description: Ушбу мақолада синфдан ташқари тарбиявий ишларни ташкил қилиш, синфдан ташқари ишларнинг ташкилотчиси вазифалари, синфдан ташқари олиб бориладиган тарбиявий ишларда иш усуллари, синфдан ташқари ишлар ўз мазмунига кўра хилма – хиллиги ва тўгарак машғулотлари ҳақида сўз боради
NONSTRUCTURAL AND STATISTICAL NONPARAMETRIC MARKET POWER TESTS: AN EMPIRICAL INVESTIGATION
Creators: name: Noelke, Corinna M.
name: Raper, Kellie Curry
name: Noelke, Corinna M.
name: Raper, Kellie Curry
Publisher: name: Unknown
Year: 1999
Subjects: subject: Industrial Organization
subject: Research Methods/ Statistical Methods
subject: market power
subject: Monte Carlo
subject: nonparametric
subject: nonstructural

description: We use Monte Carlo experiments to assess the accuracy of two nonstructural and two statistical nonparametric market power tests. We implement these monopoly and monopsony market power tests using data from ten known market structures. The objective is to determine which test is most able to distinguish between market structures. The statistical nonparametric market power tests appear to be promising.
Domain Formation: Decided Before, or After the Transition?
Creators: name: Antunes, Nuno D.
name: Gandra, Pedro
name: Rivers, Ray J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: There is increasing evidence that causality provides useful bounds in determining the domain structure after a continuous transition. In devising their scaling laws for domain size after such a transition, Zurek and Kibble presented arguments in which causality is important both before and after the time at which the transition begins to be implemented. Using numerical simulations of kinks in 1+1 dimensions, we explain how the domain structure is determined exclusively by what happens after the transition, even though the correlation length freezes in before the transition.
description: 6 pages, 3 figs, final extended version published in PRD
The Weisfeiler-Leman dimension of chordal bipartite graphs without bipartite claw
Creators: name: Ponomarenko, Ilia
name: Ryabov, Grigory
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C60, 05E30

description: A graph $X$ is said to be chordal bipartite if it is bipartite and contains no induced cycle of length at least $6$. It is proved that if $X$ does not contain bipartite claw as an induced subgraph, then the Weisfeiler-Leman dimension of $X$ is at most $3$. The proof is based on the theory of coherent configurations.
description: 10 pages, 4 figures
PRODUCTION SYSTEMS COMPETITION AND THE PRICING OF INNOVATIONS: AN APPLICATION TO BIOTECHNOLOGY AND SEED CORN
Creators: name: Alexander, Corinne E.
name: Goodhue, Rachael E.
name: Alexander, Corinne E.
name: Goodhue, Rachael E.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: biotechnology
subject: corn

description: Farmers now choose production systems rather than individual inputs. This change may limit biotechnology innovation rents. We model a corn farmer's production choice among four systems: traditional, herbicide-resistant, insect resistant, and high-oil. We compare actual seed and chemical prices to the maximum rent the biotechnology firm can obtain.
Ensemble Regression Models for Software Development Effort Estimation: A Comparative Study
Creators: name: Carvalho, Halcyon D. P.
name: Lima, Marília N. C. A.
name: Santos, Wylliams B.
name: Fagunde, Roberta A. de A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: As demand for computer software continually increases, software scope and complexity become higher than ever. The software industry is in real need of accurate estimates of the project under development. Software development effort estimation is one of the main processes in software project management. However, overestimation and underestimation may cause the software industry loses. This study determines which technique has better effort prediction accuracy and propose combined techniques that could provide better estimates. Eight different ensemble models to estimate effort with Ensemble Models were compared with each other base on the predictive accuracy on the Mean Absolute Residual (MAR) criterion and statistical tests. The results have indicated that the proposed ensemble models, besides delivering high efficiency in contrast to its counterparts, and produces the best responses for software project effort estimation. Therefore, the proposed ensemble models in this study will help the project managers working with development quality software.
IMPACT OF INCREASING IMPORTS ON THE UNITED STATES SOUTHEASTERN REGION SHRIMP PROCESSING INDUSTRY 1973-1996
Creators: name: Diop, Hamady
name: Harrison, R. Wes
name: Keithly, Walter R.
name: Diop, Hamady
name: Harrison, R. Wes
name: Keithly, Walter R.
Publisher: name: Unknown
Year: 1999
Subjects: Demand and Price Analysis
International Relations/Trade

description: This study analyzes the effects of increased shrimp imports on the price-cost margins in three sectors of the U.S. shrimp industry. Results indicates decreasing price-cost margins for peeled shrimp, breaded shrimp, and headless-shell-on shrimp. The increase in shrimp imports reduces domestic processor prices for shrimp products, therefore decreasing processor margins.
Studies of western hemlock nutrition
Creators: name: White, Joseph Barry
Publisher: name: University of British Columbia
Year: 2009

description: Western hemlock (Tsuga heterophylla) is an important commercial tree species in coastal British Columbia. A series of studies was carried out to further our understanding of western hemlock nutrition, which may ultimately provide for an operational fertilization program involving this species. Eight immature western hemlock stands were fertilized with additions of N , two levels of P (100 and 500 kg/ha) and a blend treatment. All stands responded to N additions to varying degrees but did not show evidence of a response to P or blend additions. Arginine concentrations increased following N only additions but decreased when P or the blend fertilizer was also applied. Concentrations of organic and inorganic P were determined. The organic fraction peaked at approximately 0.12% and further increases in total P were allocated to the inorganic fraction. ³²P uptake was measured in excised fine roots from eight stands that had been previously fertilized. Uptake varied significantly with treatment but was not related to growth response. Uptake rates were related to total P and inorganic P in current-year foliage. The latter suggested that tree perception of P deficiency is foliar based. A 5-year-old western hemlock plantation was fertilized to investigate the effect of improved nutrition on the photosynthetic apparatus. The additions of N and P, the latter at a rate of 300 kg/ha, improved height growth. The effects of nutrient additions were examined by analyses of photosynthetic rates, carbon isotope discrimination, chlorophyll concentrations, and chlorophyll fluorescence. Improved growth, and the concomitant changes in the various photosynthetic parameters, was mirrored by changes in chloroplast ultrastructure. An 18-year-old stand comprised of Douglas-fir and western hemlock was fertilized with N and two levels of P. The distribution of P among various P metabolites using perchloric acid extracts was attempted using NMR. An in vitro investigation was attempted to fractionate total P, at a cellular level, into vacuolar and cytoplasmic fractions. The physiological parameters measured in this thesis were more sensitive indicators of N and P status, but a longer growth response period is required before their value in predicting the long-term response of this species to fertilization can be concluded.
Nuclear parton distribution functions and energy loss effect in the Drell-Yan reaction off nuclei
Creators: name: Duan, ChunGui
name: Song, LiHua
name: Wang, ShuoHe
name: Li, GuangLie
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The energy loss effect in nuclear matter is another nuclear effect apart from the nuclear effects on the parton distribution as in deep inelastic scattering process. The quark energy loss can be measured best by the nuclear dependence of the high energy nuclear Drell-Yan process. By means of two typical kinds of quark energy loss parametrization and the different sets of nuclear parton distribution functions, we present a analysis of the E866 experiments on the nuclear dependence of Drell-Yan lepton pair production resulting from the bombardment of Be, Fe and W targets by 800GeV protons at Fermilab. It is found that the quark energy loss in cold nuclei is strongly dependent on the used nuclear parton distribution functions. The further prospects of using relatively low energy proton incident on nuclear targets are presented by combining the quark energy loss rate determined from a fit to the E866 nuclear-dependent ratios versus $x_1$, with the nuclear parton distribution functions given from lA deep inelastic scattering (DIS) data. The experimental study of the relatively low energy nuclear Drell-Yan process can give valuable insight in the enengy loss of fast quark propagating a cold nuclei and help to pin down nuclear parton distributions functions.
description: 18 pages, 5 figures
Full counting statistics of super-Poissonian shot noise in multi-level quantum dots
Creators: name: Belzig, W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We examine the full counting statistics of quantum dots, which display super-Poissonian shot noise. By an extension to a generic situation with many excited states we identify the underlying transport process. The statistics is a sum of independent Poissonian processes of bunches of different sizes, which leads to the enhanced noise. The obtained results could be useful to determine transport characteristics in molecules and large quantum dots, since the noise (and higher cumulants) allow to identify the internal level structure, which is not visible in the average current.
description: 4 pages, 1 figure, submitted to PRB
WITHIN-SALE PRICE VARIATION AT CATTLE AND CARCASS AUCTIONS
Creators: name: Todd, Mike C.
name: Cowell, M.D.
name: Todd, Mike C.
name: Cowell, M.D.
Publisher: name: Unknown
Year: 1981
Subjects: Demand and Price Analysis

description: Price variability within cattle and carcass auction sales is examined through two statistical studies. A substantial element of the price variation at the cattle auction examined is found to be due to differences in the cattle-type factors - sex, carcass weight, fatness and breed, and the factors district of origin, lot size and time of sale. Several of these factors are also found to be important explanators of price variation at carcass auctions.
On the composition of ices incorporated in Ceres
Creators: name: Mousis, Olivier
name: Alibert, Yann
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use the clathrate hydrate trapping theory (Lunine & Stevenson 1985) and the gas drag formalism of Weidenschilling (1977) to calculate the composition of ices incorporated in the interior of Ceres. In the spirit of the work of Cyr et al. (1998), and using a time dependent solar nebula model, we show that icy solids can drift from beyond 5 AU to the present location of the asteroid and be preserved from vaporization. We argue that volatiles were trapped in the outer solar nebula under the forms of clathrate hydrates, hydrates and pure condensates prior to having been incorporated in icy solids and subsequently in Ceres. Under the assumption that most of volatiles were not vaporized during the accretion phase and the thermal evolution of Ceres, we determine the per mass abundances with respect to H2O of CO2, CO, CH4, N2, NH3, Ar, Xe, and Kr in the interior of the asteroid. The Dawn space mission, scheduled to explore Ceres in August 2014 (Russel et al. 2004), may have the capacity to test some predictions. We also show that an in situ measurement of the D/H ratio in H2O in Ceres could constrain the distance range in the solar nebula where its icy planetesimals were produced.
description: Accepted in MNRAS
Applications of Bayesian model selection to cosmological parameters
Creators: name: Trotta, Roberto
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Bayesian model selection is a tool to decide whether the introduction of a new parameter is warranted by data. I argue that the usual sampling statistic significance tests for a null hypothesis can be misleading, since they do not take into account the information gained through the data, when updating the prior distribution to the posterior. On the contrary, Bayesian model selection offers a quantitative implementation of Occam's razor. I introduce the Savage-Dickey density ratio, a computationally quick method to determine the Bayes factor of two nested models and hence perform model selection. As an illustration, I consider three key parameters for our understanding of the cosmological concordance model. By using WMAP 3-year data complemented by other cosmological measurements, I show that a non-scale invariant spectral index of perturbations is favoured for any sensible choice of prior. It is also found that a flat Universe is favoured with odds of 29:1 over non--flat models, and that there is strong evidence against a CDM isocurvature component to the initial conditions which is totally (anti)correlated with the adiabatic mode (odds of about 2000:1), but that this is strongly dependent on the prior adopted. These results are contrasted with the analysis of WMAP 1-year data, which were not informative enough to allow a conclusion as to the status of the spectral index. In a companion paper, a new technique to forecast the Bayes factor of a future observation is presented.
description: v2 to v3: minor changes, matches accepted version by MNRAS. v1 to v2: major revision. New results using WMAP 3-yr data, scale-invariant spectrum now disfavoured with moderate evidence. New benchmark test for the accuracy of the method. Bayes factor forecast methodology (PPOD, formerly called ExPO) expanded and now presented in a companion paper (astro-ph/0703063)
PT AT1aR KO Western Blots
Creators: name: Nelson, Jonathan
Publisher: name: figshare
Year: 2021
Subjects: subject: 110312 Nephrology and Urology
subject: FOS: Clinical medicine

description: This is an appendix to the manuscript "Local and Downstream Actions of Proximal Tubule Angiotensin II Signaling on Sodium Transporters in the Mouse Nephron"
Unravelling the nature of HD 81032 - a new RS CVn Binary
Creators: name: Pandey, J. C.
name: Singh, K. P.
name: Drake, S. A.
name: Sagar, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: BVR photometric and quasi-simultaneous optical spectroscopic observations of the star HD 81032 have been carried out during the years 2000 - 2004. A photometric period of $18.802 \pm 0.07$ d has been detected for this star. A large group of spots with a migration period of $7.43 \pm 0.07$ years is inferred from the first three years of the data. H$α$ and Ca II H and K emissions from the star indicate high chromospheric activity. The available photometry in the BVRIJHK bands is consistent with spectral type of K0 IV previously found for this star. We have also examined the spectral energy distribution of HD 81032 for the presence of an infrared colour excess using the 2MASS JHK and IRAS photometry, but found no significant excess in any band abovethe normal values expected for a star with this spectral type. We have also analyzed the X-ray emission properties of this star using data obtained by the ROSAT X-ray observatory during its All-Sky Survey phase. An X-ray flare of about 12 hours duration was detected during the two days of X-ray coverage obtained for this star. Its X-ray spectrum, while only containing 345 counts, is inconsistent with a single-temperature component solar-abundance coronal plasma model, but implies either the presence of two or more plasma components, non-solar abundances, or a combination of both of these properties. All of the above properties of HD 81032 suggest that it is a newly identified, evolved RS CVn binary.
description: 18 pages, 10 figures, 3 tables, Accepted for the publication in JApA
On a Shape Optimization Problem for Tree Branches
Creators: name: Bressan, Alberto
name: Galtung, Sondre T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49Q10, 49Q20

description: This paper is concerned with a shape optimization problem, where the functional to be maximized describes the total sunlight collected by a distribution of tree leaves, minus the cost for transporting water and nutrient from the base of the trunk to all the leaves. In the case of 2 space dimensions, the solution is proved to be unique, and explicitly determined.
description: 23 pages, 10 figures
Where is the spectral weight in magnetic neutron scattering in the cuprates?
Creators: name: Lorenzana, J.
name: Seibold, G.
name: Coldea, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present estimates in the Hubbard and Heisenberg models for the spectral weight in magnetic neutron scattering experiments on the cuprates. With the aid of spin-wave theory and the time dependent Gutzwiller approximation we discuss how the spectral weight is distributed among the different channels and between high and low energies. In addition to the well known total moment sum rule we discuss sum rules for each component of the dynamical structure factor tensor which are peculiar for spin 1/2 systems. The various factors that reduce the spectral weight at the relevant energies are singled out and analyzed like: shielding factors, weight at electronic energies, multimagnon process etc. Although about 10% ~ 15% of the naively expected weight is detected in experiments after consideration of these factors the missing weight is within the experimental uncertainties. A large fraction of the spectral weight is hard to detect with present experimental conditions.
description: 16 pages, 13 figures, submitted to PRB
NOTES ON THE A.M.P. SOCIETY'S LAND DEVELOPMENT SCHEME IN SOUTH AUSTRALIA
Creators: name: Bell, Harold F.
name: Cairns, W.H.
name: Bell, Harold F.
name: Cairns, W.H.
Publisher: name: Unknown
Year: 1958
Subjects: Land Economics/Use

description: Land development in the so-called "Ninety-Mile Desert" area of South Australia can now be regarded as having passed the experimental stage. This, of course, is not to infer that the land brought into production by the A.M.P. Society, or by others undertaking development in this region, is insulated against all likely risks, nor that all land in the area is suitable for and capable of development. Like other components of the rural sector this area can be expected to experience from time to time climatic variations, stock and plant diseases, and product price fluctuations which may materially affect its well-being. But, subject to this reservation, it can fairly be claimed that the A.M.P. Society's work has substantially vindicated on a wide front the findings made in recent years by scientists working on necessarily small-scale experiments. In this transition from experiment to accomplishment the main barriers which had long inhibited the development of much of this area have been demolished and this successful example is now being emulated independently by many private individuals. The basic features of the A.M.P. Society's Scheme have already been described elsewhere and no useful purpose would be served by going over these general data again here. However, there are many other interesting questions, historical, sociological, economic, etc., which are sure to occur to the inquiring social scientist. This paper sets out in note form some information on a selection of these questions.
Topological flocking models in spatially heterogeneous environments
Creators: name: Rahmani, Parisa
name: Peruani, Fernando
name: Romanczuk, Pawel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Flocking models with metric and topological interactions are supposed to exhibit distinct features, as for instance the presence and absence of moving polar bands. On the other hand, quenched disorder (spatial heterogeneities) has been shown to dramatically affect large-scale properties of active systems with metric interactions, while the impact of quenched disorder on active systems with metric-free interactions has remained, until now, unexplored. Here, we show that topological flocking models recover several features of metric ones in homogeneous media, when placed in a heterogeneous environment. In particular, we find that order is long-ranged even in the presence of spatial heterogeneities, and that the heterogeneous environment induces an effective density-order coupling facilitating emergence of traveling bands, which are observed in wide regions of parameter space. We argue that such a coupling results from a fluctuation-induced rewiring of the topological interaction network, strongly enhanced by the presence of spatial heterogeneities.
description: 13 pages, 8 figures
Linear Polarization in AGN
Creators: name: Rojas Lobos, P. Andrea
Publisher: name: Zenodo
Year: 2022
Subjects: AGN
Polarimetry
Scattering

description: A schematic of the AGN and the main source of linear polarization in the optical and UV range, the scattering, both from the continuum and from the broad lines, is shown. Some examples of potential uses of linear polarimetry are presented, such as the observation of broad lines in type 2 AGNs, the measurement and structure of the BLR, a new method to measure the mass of supermassive black holes, and binary supermassive black hole models.