cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum Mechanics in Space--Time: the Feynman Path Amplitude Description of Physical Optics, de Broglie Matter Waves and Quark and Neutrino Flavour Oscillations
Creators: name: Field, J. H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Feynman's laws of quantum dynamics are concisely stated, discussed in comparison with other formulations of quantum mechanics and applied to selected problems in the physical optics of photons and massive particles as well as flavour oscillations. The classical wave theory of light is derived from these laws for the case in which temporal variation of path amplitudes may be neglected, whereas specific experiments, sensitive to the temporal properties of path amplitudes, are suggested. The reflection coefficient of light from the surface of a transparent medium is found to be markedly different to that predicted by the classical Fresnel formula. Except for neutrino oscillations, good agreement is otherwise found with previous calculations of spatially dependent quantum interference effects.
description: 89 pages, 12 figures, 3 tables
Heterogeneous farmland owners: two approaches for objective based classification
Creators: name: Pouta, Eija
name: Myyra, Sami
name: Hanninen, Harri
name: Pouta, Eija
name: Myyra, Sami
name: Hanninen, Harri
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Heterogeneous
subject: farmland owners
subject: classification

description: Landowner classifications based on their objectives have been used to describe the heterogeneous group of landowners. As the accurate information on landowners preferences is essential in policy planning and evaluation of the effects of various policy instruments, there is a need to develop feasible methods for classifying land owners. In this study we apply objective based classification to farmland owners using the data of Finnish farmland owners. We compare two classification methods, traditional cluster analysis and latent class analysis, in terms of their criterion validity. The comparison of criterion validity, consisting from convergent, concurrent, discriminant and predictive components of validity, revealed that latent class analysis was superior method. The analysis showed that objective grouping of farmland owners was relevant predictor of landowner behavior, and is thus valuable information for agricultural policy makers.
2:3 Twin Quasi-Periodic Oscillations in Magnetohydrodynamic Accretion Flows
Creators: name: Kato, Yoshiaki
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the radial and vertical oscillations in the three-dimensional magnetohydrodynamic (MHD) accretion flows around black holes. General relativistic effects are taken into account by using pseudo-Newtonian potential. We find that the structure of MHD flows is changed at $3.8 r_{\rm s}\leq r\leq 6.3 r_{\rm s}$ and the two pairs of quasi-periodic oscillations (twin QPOs) are excited in that region. The time evolution of the power spectrum density (PSD) indicates that these twin QPOs are most likely to be produced by the resonance between the Keplerian frequency $ν_{\rm K}$ and the epicyclic frequency $ν_κ$. The PSD shows that the lower peak frequency $ν_{\rm l}$ corresponds to $ν_{\rm K}$, while the upper peak frequency $ν_{\rm u}$ corresponds to $ν_{\rm K} + ν_κ$. The ratio of two peak frequencies is close to 2:3. The results provide the first direct evidence for the excitation of the resonant disk oscillation in the MHD accretion flows.
description: 7 pages, 3 figures, accepted in PASJ
Performance Analysis of Production and Trade of Indian Silk under WTO Regime
Creators: name: Umesh, Kotrakerebasegowda
name: Akshara, Mutuguppe
name: Shripad, Bhat
name: Harishkumar, K.
name: Srinivasan, S.M.
name: Umesh, Kotrakerebasegowda
name: Akshara, Mutuguppe
name: Shripad, Bhat
name: Harishkumar, K.
name: Srinivasan, S.M.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: International Development
subject: International Relations/Trade
subject: Political Economy
subject: Mulberry
subject: co-integration
subject: instability index
subject: nominal protection coefficient
subject: WTO

description: India is the second largest producer of silk and also the largest consumer of silk in the world having a strong tradition bound domestic market. In this paper, growth functions were estimated for India’s aggregate production and trade parameters using annual data from 1984/85 to 2006/07. To know the temporal price efficiency between the World (China) and Domestic market (India) the co-integration test was done for the period from 1991/92 to 2004/05. The performance analysis was done considering both mulberry and non-mulberry silk sectors at all India level for two sub-periods (Pre-WTO; 1984-85 to 1994-95 and Post-WTO; 1995-96 to 2006-07). The overall growth in production of cocoon and raw silk in India exhibited a decreasing trend with moderate instability. The overall performance of non-mulberry silk was encouraging as the growth rates were positive particularly in case of Eri and Muga. The import of silk goods increased both in quantity terms and in value terms during the study period. The co-integration tests showed lack of integration implying that, there was no long run equilibrium relationship between domestic and world market prices. The analysis of trade competitiveness measures showed country does not possess competitiveness in the production of raw silk.
Lateral length scales in exchange bias
Creators: name: Roshchin, Igor V.
name: Petracic, O.
name: Morales, R.
name: Li, Zhi-Pan
name: Batlle, Xavier
name: Schuller, Ivan K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: When a ferromagnet is in proximity with an antiferromagnet, lateral length scales such as the respective magnetic domain sizes drastically affect the exchange bias. Bilayers of FeF2 and either Ni, Co or Fe are studied using SQUID and spatially resolved MOKE. When the antiferromagnetic domains are larger than or comparable to the ferromagnetic domains, a local, non-averaging exchange bias is observed. This gives rise to unusual and tunable magnetic hysteresis curves.
description: 14 pages, 2 in-line figures. Submitted to PRL
Localization of 5f-electrons and pressure effects on magnetism in U intermetallics in the light of spin-fluctuation theory
Creators: name: Opletal, Petr
name: Valenta, Jaroslav
name: Proschek, Petr
name: Sechovský, Vladimír
name: Prokleška, Jan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: UCoGa and URhGa, two isostructural compounds show opposite signs of the initial response of Curie temperature to applied hydrostatic premenssure. To determine the physical origin of this contradiction the magnetization data measured with respect to temperature, magnetic field and hydrostatic pressure were analyzed in the framework of the Takahashi's spin-fluctuation theory. The parameters T0 and TA characterizing the distribution widths of the spin-fluctuation spectrum in the energy and wave vector space, respectively, and TC/T0, the degree of the 5f-electron localization have been determined. Examination of available experimental data for the other UTX (T = a transition metal, X = Al, Ga) ferromagnets having the ZrNiAl-type structure revealed some correlations between the degree of the 5f-electron localization represented by the spin-fluctuation parameters and the response of Curie-temperature on the applied pressure. These observations may be applied more generally to describe the localization and magnetic behaviors of the majority of the uranium ferromagnetic compounds.
Method Based On Challenging Flow By Competences For Tasks With High Cognitive Demand
Creators: name: Holguin-Alvarez, Jhon
name: Garro-Aburto, Luzmila
name: Hernández, Yrene Cecilia Uribe
name: Castillo, Pedro Novoa
Publisher: name: figshare
Year: 2020
Subjects: subject: 130306 Educational Technology and Computing
subject: FOS: Educational sciences

description: La demanda cognitiva en matemáticas es crucial para abordar la resolución de problemas, aprender geometría, estadísticas y otras disciplinas que se ejercen cuando los estudiantes enfrentan tareas complejas, que comienzan de la escuela a la universidad. Sin embargo, ninguna actividad desarrollada en el aula, basada en actividades ancladas en etapas emocionales y afectivas que desarrollen el compromiso del estudiante con las matemáticas, ha sido estudiada por la ciencia educativa en este campo. Por esta razón, la investigación propuso aumentar las habilidades para desarrollar tareas de alta demanda cognitiva en matemáticas en una muestra de 335 estudiantes de primaria de escuelas públicas y privadas en Perú. Se utilizó una prueba estandarizada utilizando el método de correlación y la fiabilidad regular. Los resultados muestran altos niveles de acercamiento a tareas de bajo nivel de información conectivo, en tareas de alto nivel, pero existen dificultades para aumentar las habilidades para resolver tareas con alta demanda cognitiva. Concluimos que las tareas con alta demanda cognitiva requieren más de ocho meses de experimentación práctica, con mayor diligencia en el desarrollo de tareas personalizadas en lugar de las grupales. El grupo experimental demostró que después de 80 sesiones de aprendizaje, los estudiantes logran abordar tareas de alta demanda, aunque necesitan más apoyo para formular otros problemas de naturaleza similar como evidencias sustanciales.
Absence of Long-Range Coherence in the Parametric Emission from Photonic Wires
Creators: name: Wouters, M.
name: Carusotto, I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We analytically investigate the spatial coherence properties of the signal emission from one-dimensional optical parametric oscillators. Because of the reduced dimensionality, quantum fluctuations are able to destroy the long-range phase coherence even far above threshold. The spatial decay of coherence is exponential and, for realistic parameters of semiconductor photonic wires in the strong exciton-photon coupling regime, it is predicted to occur on an experimentally accessible length scale.
description: 6 pages, 3 figures
Measuring Agricultural Innovation System Properties and Performance: Illustrations from Ethiopia and Vietnam
Creators: name: Spielman, David J.
name: Kelemework, Dawit
name: Spielman, David J.
name: Kelemework, Dawit
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: Agriculture
subject: developing countries
subject: innovation
subject: Ethiopia
subject: Vietnam

description: Rapid changes in the global food and agricultural system suggest that developing-country agriculture must become more dynamic, responsive, and competitive to survive. However, without adequate measurements of the properties and performance of innovativeness in the agricultural sector, it is difficult for decision-makers to make policies and investments that promote innovation in agriculture. This paper attempts to demonstrate how innovativeness in developing-country agriculture can be measured. It does so first by identifying a set of indicators from secondary data sources that capture key elements of an agricultural innovation system, and aggregates these indicators into a unique Agriculture, Development, and Innovation Index (ADII) covering 35 developing countries. It then provides a toolkit for collecting and analyzing “systems-oriented” indicators that add more process-related nuances to ADII with both attributional and relational data. This is illustrated with data collected in Ethiopia and Vietnam in 2007-08.
description: Agriculture; developing countries; innovation; Ethiopia; Vietnam
Pricing Plans for Managing Seasonal Deliveries by Dairy Cooperatives
Creators: name: Ling, K. Charles
name: Ling, K. Charles
Publisher: name: Unknown
Year: 1982
Subjects: subject: Agribusiness
subject: Milk
subject: Seasonality
subject: Pricing plans
subject: Hauling cost
subject: Manufacturing cost
subject: Give-up charges

description: This study develops a method to devise pricing plans for dairy cooperatives to recover costs of handling seasonal milk deliveries from producers and the cost of satisfying handlers' cyclical fluid demand. Based on analyses of hauling and manufacturing costs, charges against producers and handlers are formulated. Manufacturing cost is the major component of producer charges. Give-up charges against handlers are determined by the cooperative's manufacturing cost, while hauling cost is the main consideration in servicing handlers' day-to-day fluctuation of fluid demand.
Mader, Andr. Evaristus: Altchristliche Basiliken u. Lokaltraditionen in Südjudäa
Creators: name: Sauer, J.
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 18 (1920): Oriens christianus, Band 18/19
Selumetinib: the first ever approved drug for neurofibromatosis-1 related inoperable plexiform neurofibroma
Creators: name: Sabyasachi Mukhopadhyay
name: Maitra, Arpita
name: Shouvik Choudhury
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer

description: Plexiform neurofibroma (PN) is one of the most striking clinical features of neurofibromatosis 1. Growth of PN can occur at any stage of life but mostly in childhood and during hormonal changes. They arise from multiple nerve fascicles and may transform into malignant peripheral nerve sheath tumors. There was previously no approved medical therapy for tumor shrinkage or regression. Surgery is not always possible due to inaccessible location, involvement of vital tissue, optimal timing, and incomplete removal. Recently, the US Food and Drug Administration approved selumetinib for pediatric patients, 2 years of age and older, with neurofibromatosis type 1 who have symptomatic, inoperable tumor. Neurofibromin, a 2818 amino acid long cytoplasmic protein, is the product of the NF1 gene. It inhibits the activity of Ras GTPase proteins. Lack of functional neurofibromin in patients with NF1 leads to dysregulated Ras and tumorigenesis. RAS MAPK pathway is hyper activated in NF1. Selumetinib is an inhibitor of MEK1 and MEK2 proteins, which play an important role in the MAPK signaling pathway related to tumor growth. Approval was based on one pivotal, single-arm, phase II trial. 70% of participants experienced confirmed partial response of tumor shrinkage, and 68% also had improvement of related complications, and other studies have also shown beneficial responses. The major limitation of this molecule regarding its mechanism of action is the dose-dependent effect of MEK inhibition in growth of neurofibroma. Long-term safety and efficacy studies are to be done in the future to establish selumetininb as a useful medicine.
"Naughty girls," "bad wives" and "unwise mothers" : subtitle early stories by Oba Minako in the literary-social context of Japan in the 1960s
Creators: name: Lennikov, Mikhail A.
Publisher: name: University of British Columbia
Year: 2009

description: This thesis explores Ȏba Minako's (1930-) philosophy of the feminine in the literarysocial context of Japan of the 1960s. Ȏba is one of the most remarkable contemporary Japanese women writers both as a talented author and a social nonconformist. Ȏba's revolutionary concepts of the feminine were the most explicitly articulated in her early stories, "Kȏzu no nai e" [Picture with no Composition] (1963), "Niji to ukihashi" [The Rainbow and a Floating Bridge] (1967) and "Sanbiki no kani" [The Three Crabs] (1967). The main body of my thesis consists of three chapters. Chapter One begins with a brief overview of the basic aspects of human sexuality, the genesis of the institution qf marriage and family, and the roots of the subordinate status of women. It also includes a very concise history of the gender relations in premodern Japan and the evolution of those into the reactionary concept "ryȏsai kenbo" [good wife, wise mother] during the Meiji period (1868-1911). This concept survived Japan's defeat in the Pacific War and the following democratization of the country's political and social systems. In 1960s in Japan it still remained a dominant idea in gender relations. The second chapter of my thesis deals with the texts of Ȏba's early stories, mentioned above. These works are analyzed in order to conceptualize Ȏba's views on the feminine and the marital-familial system. Chapter Three briefly outlines the situation in Japanese women's literature in the 1960s and discusses four pieces of the female fiction of that time-"Parutai" [Partei] (1960) by Kurahashi Yumiko, "Banshȏ" [Evening Bells] (1960) by Harada Yasuko, "Kiji" [Pheasant] (1963) by Setouchi Harumi and "Saigo no toki" [The Last Time] (1966) by Kȏno Taeko . Having examined the above-mentioned texts, I conclude that the philosophy of the feminine, which Ȏba Minako articulated in her early stories, boldly and openly challenged the Japanese establishment and its "good wife, wise mother" dogma, which remained a cornerstone of gender relations in the 1960s. The radicalism and unorthodoxy of this author's views went far ahead of her time, having almost no analogues in Japanese women's literature of that time.
УЧЕТ РЕСУРСОВ В МИНИМИЗАЦИИ ДЛИТЕЛЬНОСТИ ЦИКЛА ВЫПОЛНЕНИЯ ПРОЕКТОВ
Creators: name: Ляхов Олег Алексеевич
Publisher: name: Труды Международной Азиатской школы-семинара «Проблемы оптимизации сложных систем»
Year: 2021
Subjects: сетевая модель
календарное планирование проектов
нескладируемые ресурсы
цикл выполнения проекта

description: Рассмотрено отображение ресурсных потребностей в задачах сетевого планирования проектов. Оценены способы сокращения размерности задач за счет укрупнения ресурсов. Показано, что агрегирование приводит к систематическим ошибкам в производственных графиках. Приведены в сравнении результаты численных экспериментов построения расписаний работ по детализированным и агрегированным данным с использованием линейных целочисленных моделей
Reitzenstein, R.: Das iranische Erlösungsmysterium
Creators: name: Casel, Odo
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 18 (1920): Oriens christianus, Band 18/19
Kinetic energy spectra for fragments and break-up density in multifragmentation
Creators: name: Raduta, Ad. R.
name: Borderie, B.
name: Bonnet, E.
name: Neindre, N. Le
name: Piantelli, S.
name: Rivet, M. F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the possibility, in nuclear fragmentation, to extract information on nuclear density at break-up from fragment kinetic energy spectra using a simultaneous scenario for fragment emission. The conclusions we derive are different from the recently published results of Viola et al. [Phys. Rev. Lett. 93, (2004), 132701] assuming a sequential fragment emission and claiming that the experimentally observed decrease of peak centroids for kinetic energy spectra of fragments with increasing bombarding energy is due to a monotonic decrease of the break-up density.
description: 6 pages, 3 figures
A Framework for Analyzing Technical Trade Barriers in Agricultural Markets
Creators: name: Roberts, Donna
name: Josling, Timothy E.
name: Orden, David
name: Roberts, Donna
name: Josling, Timothy E.
name: Orden, David
Publisher: name: Unknown
Year: 1999
Subjects: subject: International Relations/Trade
subject: technical trade barriers
subject: sanitary and phytosanitary
subject: agricultural trade policy
subject: environmental trade measures

description: Technical trade barriers are increasingly important in the international trade of agricultural products. Designing technical trade measures that can satisfy the growing demand for food safety, product differentiation, environmental amenities, and product information at the lowest cost to the consumer and to the international trading system requires an understanding of the complex economics of regulatory import barriers. This report proposes a definition and classification scheme to frame discussion and evaluation of such measures. Open-economy models that complement the classification scheme are developed graphically to highlight the basic elements that affect the economic impacts of changes in technical trade barriers.
Toward Five-dimensional Core-collapse Supernova Simulations
Creators: name: Cardall, Christian Y.
name: Razoumov, Alexei O.
name: Endeve, Eirik
name: Lentz, Eric J.
name: Mezzacappa, Anthony
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The computational difficulty of six-dimensional neutrino radiation hydrodynamics has spawned a variety of approximations, provoking a long history of uncertainty in the core-collapse supernova explosion mechanism. Under the auspices of the Terascale Supernova Initiative, we are honoring the physical complexity of supernovae by meeting the computational challenge head-on, undertaking the development of a new adaptive mesh refinement code for self-gravitating, six-dimensional neutrino radiation magnetohydrodynamics. This code--called {\em GenASiS,} for {\em Gen}eral {\em A}strophysical {\em Si}mulation {\em S}ystem--is designed for modularity and extensibility of the physics. Presently in use or under development are capabilities for Newtonian self-gravity, Newtonian and special relativistic magnetohydrodynamics (with `realistic' equation of state), and special relativistic energy- and angle-dependent neutrino transport--including full treatment of the energy and angle dependence of scattering and pair interactions.
description: 5 pages. Proceedings of SciDAC 2005, Scientific Discovery through Advanced Computing, San Francisco, CA, 26-30 June 2005
ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ ПАДАЮЩЕЙ ИЗ КРУГЛОГО СОПЛА СТРУИ С ИСПОЛЬЗОВАНИЕМ OPENFOAM
Creators: name: Абдимуталипова Зейнура Каныбековна
name: Курбаналиев Абдикерим Ырысбаевич
Publisher: name: Труды Международной Азиатской школы-семинара «Проблемы оптимизации сложных систем»
Year: 2021
Subjects: моделирование
турбулентность
число Нуссельта
падающая струя
метод конечных объемов
OpenFOAM
струя
сопла

description: В данной статье представлены численные результаты моделирования методом конечных объемов для определения характеристик скорости и турбулентности падающей из круглого сопла струи. Были рассмотрены расстояния между соплом и пластиной падающей струи H/D = 2 при числах Рейнольдса 20 000 и 73 000. В качестве модели используются трехмерные усредненные по Рейнольдсу уравнения Навье – Стокса, дополненные с k-ε-стандартной моделью турбулентности. Численные результаты, полученные с помощью пакета программ OpenFOAM 7.0, сравниваются с соответствующими экспериментальными данными из базы данных ERCOFTAC.
The purely gravitational generalization of spin-rotation couplings
Creators: name: Shen, Jian Qi
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The nature of Mashhoon's spin-rotation coupling is the interaction between a particle spin (gravitomagnetic moment) and a gravitomagnetic field. Here we will consider the coupling of graviton spin to the weak gravitomagnetic fields by analyzing the Lagrangian density of weak gravitational field, and hence study the purely gravitational generalization of Mashhoon's spin-rotation couplings.
description: 4 pages, 0 figure, Latex
Susceptibility anisotropy and its disorder evolution in models for Kitaev materials
Creators: name: Andrade, Eric C.
name: Janssen, Lukas
name: Vojta, Matthias
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Mott insulators with strong spin-orbit coupling display a strongly anisotropic response to applied magnetic fields. This applies in particular to Kitaev materials, with $α$-RuCl$_3$ and Na$_2$IrO$_3$ representing two important examples. Both show a magnetically ordered zigzag state at low temperatures, and considerable effort has been devoted to properly modeling these systems in order to identify routes towards realizing a quantum spin liquid. Here, we investigate the relevant Heisenberg-Kitaev-$Γ$ model primarily at elevated temperatures, focusing on the characteristic anisotropy between the in-plane and out-of-plane uniform susceptibility. For $α$-RuCl$_3$, we find that the experimentally observed anisotropy, including its temperature dependence, can be reproduced by combining a large off-diagonal $Γ_1$ coupling with a moderate $g$-factor anisotropy. Moreover, we study in detail the effect of magnetic dilution and provide predictions for the doping evolution of the temperature-dependent susceptibilities.
description: 13 pages, 6 figures. Published version
A New Approach to the Representation Thoery of the Symmetric Groups. 2
Creators: name: Vershik, A. M.
name: Okounkov, A. Yu.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 05E05, 81R05

description: The new approach to the theory of complex representrations of the finite symmetric groups which based on the notions of Coxeter generators., Gelfand-Zetlin algebras, Hecke algebra, Young-Jucys-Murphi generators and which hardly used inductive structure - is systematically developed. The appearence of Young diagrams, tables is naturally explained - the set of content vectors of all Young tables is the spectra of Gel'fand-Zetlin algebra. The first steps of the theory (the list of the irrediucible representatinos, branching rule, Young orthopgonal form, Murnagan-Nakayama rule etc.)are established.This appraoch canbe used for other classical series, wreath products with symmetric groups. This paper is the revcised version of the paper of the same authors which was published in Selecta MAth. (New Series) V.2(1996).
description: 25p
FE'L LEKSEMALARIDA VAZIFA SEMALARI
Creators: name: Abduvoitova, Maftuna
Publisher: name: Zenodo
Year: 2024

description: Maqolada fe'l leksemalarida vazifa semalari ma’nosi, uning tarkibi, nutqiy xususiyatlari tadqiqiga doir fikr-mulohaza, tahlil va tasniflar yoritilgan.
MASCIA et al (2018) Glued laminated timber beams reinforced with sisal fibres.pdf
Creators: name: Vilela, Ramon
name: Nilson Tadeu Mascia
name: Donadon, Bruno Fazendeiro
Publisher: name: figshare
Year: 2020
Subjects: subject: 90506 Structural Engineering
subject: FOS: Civil engineering
subject: 91210 Timber, Pulp and Paper
subject: FOS: Materials engineering

description: The current appeal for sustainable building materials has expanded the use of timber in construction. However, due to timber be a raw material, natural defects are present, what reduce its strength capacity and cause, in particular, brittle failures in the tensile region of timber beams. In order to increase the mechanical properties of these beams, fibre reinforcement can be applied. In this context, natural fibres, such as Sisal fibres, already used in various fields of construction, are an alternative for reinforcement of timber structural elements, by taking into account their adequate mechanical properties and, in special, for low-mechanical resistance wood species, such as Pinu sp, a species used widely in timber construction. This paper deals with an experimental analysis glued laminated timber beams (Glulam) of Pinus sp species, reinforced by Sisal fibres. Bending tests were performed on six beams with the following dimensions, 53 mm-width by 180 mm-height by 3000 mm-length, which were prepared with eight lamellas by 8 mmthickness. These beams were reinforced with Sisal strips that were glued by Epoxy adhesive on the bottom part of these beams. In addition, comparisons of result with nonreinforced Glulam were carried out. From the analyses of the experimental results, a decrease of 20 to 30% for thenormal stresses, 5 to 10% for the shear stresses and 8 to12 % for the displacements in relation to non-reinforced beams were verified.
Determinants of Financial Performance of Commercial Dairy Farms
Creators: name: Johnson, James D.
name: El-Osta, Hisham S.
name: Johnson, James D.
name: El-Osta, Hisham S.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Agricultural Finance
subject: Livestock Production/Industries
subject: financial performance
subject: net farm income
subject: technological adoption
subject: Lorenz curve
subject: Gini coefficient

description: Data from the 1993 Farm Costs and Returns Survey were used in a multi-variate analysis framework to determine factors associated with the financial performance of commercial dairy farm operations. Statistical equivalency tests revealed regional differences in the way extensive indebtedness, size of operation, and labor cost affect net farm incomes. Regional differences were also found in terms of how milk production per cow, per-unit cost of purchased feed, and level of adoption of capital intensive technologies affect per-unit returns. Examination of the variation in the net farm income of commercial dairy farms using the method of coefficients of separate determination identified the size of the operation, regardless of the location of the farm business, as the factor contributing the most to the variability in net farm income. On a per-unit-of-returns basis, factors found most important in explaining the variation in net returns per hundredweight of milk sold were cow's productivity, and per-cow forage production and purchased feed costs.
Supplemental file.docx
Creators: name: Moreno, Verónica
Publisher: name: figshare
Year: 2021
Subjects: subject: 200403 Discourse and Pragmatics
subject: FOS: Languages and literature

description: Proband's test results: PPVT-3, Token Test, Boehm test, RFI test and PGD test.
Delitzsch, Friedrich: Die Lese- und Schreibfehler im Alten Testament nebst den dem Schrifttexte einverleibten Randnoten klassifiziert
Creators: name: Wolff, Mat.
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 18 (1920): Oriens christianus, Band 18/19
A field comparison of four bioaerosol samplers for enumerating airborne fungi
Creators: name: Lee, Kit Shan
Publisher: name: University of British Columbia
Year: 2009

description: Introduction: No standard method exists for enumerating fungal aerosols, impeding the development of reliable exposure-response data. A field comparison of four bioaerosol samplers, the Reuter Centrifugal Sampler (RCS), the Andersen N6 Single Stage (N6), the Surface Air System Super 90, and the Air-o-Cell sampler (AOC), was conducted in a variety of public buildings for the measurement of fungal aerosols to compare sampling performance efficiencies and to collect baseline data for a pool of buildings Methods: Sampling was conducted at 75 sites in public buildings from June-October 2001 in the greater Vancouver area, British Columbia. Four locations were sampled at each site (1 common area, 2 offices, and 1 outdoor sample). Each location was sampled in parallel, collecting approximately 150 litres of air for each sample. Malt extract agar was used for all growth media. Sequential duplicates were taken at each location. Fixedand mixed-effects regression models were constructed to examine the relationships between each method pair and to develop between-sampler calibration equations. Samplers were also scored and ranked on a combination of performance and other sampler characteristics. A survey of a panel of academics and consultants that regularly used bioaerosol sampling equipment for fungal aerosols was conducted to guide the comparison. Results: Data from approximately 592 samples (60 different buildings) were available for analysis from each instrument. Differences were found between samplers for overall yield, detection limits, and reproducibility. Fixed- and mixed-effect models indicated location of the sample to be a confounder in the relationship of all method pairs, and interaction was also found for all except the N6-RCS comparison. Six final models were suggested to serve as possible calibration curves to convert measurements made with one sampler to those made with another. Surveys from 10 professionals were available to weight the other sampler characteristics. The final ranking for this comparison had the N6 and AOC ranked highest and the SAS and RCS the lowest. Conclusions: Concentration data is dependent on the sampling methodology utilized for assessment and should be considered before conducting investigations of bioaerosols in different environments. Exposure guidelines cannot be created until a standard methodology is available.
Murnarus Leviathan vulgo dictus, Geltnar oder Gensz Prediger : Murnerus et Schönhenselin, oder Schmutzkolb, de se ipso... / R. Musaei in gratiam M. Lutheri et Hutteni, propugnatorum Christianae et germanicae liberatis, ad osores epistola
Creators: name: Murner, Thomas
Publisher: name: Unknown
Year: 1750

description: Avskrift. Eks. 2.
description: Trykt utgave ca 1520.
Technology Trends for Mixed QKD/WDM Transmission up to 80 km
Creators: name: Alléaume, Romain
name: Aymeric, Raphaël
name: Ware, Cédric
name: Jaouën, Yves
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give a survey of some of the recent progress made in deploying quantum and classical communications over a shared fiber, focusing in particular on results obtained using continuous-variable QKD.
description: OFC 2020, 3 pages, 2 Figures
Two-flux Colliding Plane Waves in String Theory
Creators: name: Chen, Bin
name: Zhang, Jun-Feng
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct the two-flux colliding plane wave solutions in higher dimensional gravity theory with dilaton, and two complementary fluxes. Two kinds of solutions has been obtained: Bell-Szekeres(BS) type and homogeneous type. After imposing the junction condition, we find that only Bell-Szekeres type solution is physically well-defined. Furthermore, we show that the future curvature singularity is always developed for our solutions.
description: 16 pages, Latex; typoes corrected; references added, minor modifications
Method Based On Challenging Flow By Competences For Tasks With High Cognitive Demand
Creators: name: Castillo, Pedro Novoa
Publisher: name: figshare
Year: 2020
Subjects: subject: 130306 Educational Technology and Computing
subject: FOS: Educational sciences

description: La demanda cognitiva en matemáticas es crucial para abordar la resolución de problemas, aprender geometría, estadísticas y otras disciplinas que se ejercen cuando los estudiantes enfrentan tareas complejas, que comienzan de la escuela a la universidad. Sin embargo, ninguna actividad desarrollada en el aula, basada en actividades ancladas en etapas emocionales y afectivas que desarrollen el compromiso del estudiante con las matemáticas, ha sido estudiada por la ciencia educativa en este campo. Por esta razón, la investigación propuso aumentar las habilidades para desarrollar tareas de alta demanda cognitiva en matemáticas en una muestra de 335 estudiantes de primaria de escuelas públicas y privadas en Perú. Se utilizó una prueba estandarizada utilizando el método de correlación y la fiabilidad regular. Los resultados muestran altos niveles de acercamiento a tareas de bajo nivel de información conectivo, en tareas de alto nivel, pero existen dificultades para aumentar las habilidades para resolver tareas con alta demanda cognitiva. Concluimos que las tareas con alta demanda cognitiva requieren más de ocho meses de experimentación práctica, con mayor diligencia en el desarrollo de tareas personalizadas en lugar de las grupales. El grupo experimental demostró que después de 80 sesiones de aprendizaje, los estudiantes logran abordar tareas de alta demanda, aunque necesitan más apoyo para formular otros problemas de naturaleza similar como evidencias sustanciales.
The role of geometry on dispersive forces
Creators: name: Roman-Velazquez, C. E.
name: Noguez, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The role of geometry on dispersive forces is investigated by calculating the energy between different spheroidal particles and planar surfaces, both with arbitrary dielectric properties. The energy is obtained in the non-retarded limit using a spectral representation formalism and calculating the interaction between the surface plasmons of the two macroscopic bodies. The energy is a power-law function of the separation of the bodies, where the exponent value depends on the geometrical parameters of the system, like the separation distance between bodies, and the aspect ratio among minor and major axes of the spheroid.
description: Presneted at QFEXT05, Barcelona 2005. Submitted to J. Phys. A
The JIMWLK evolution and the s-channel unitarity
Creators: name: Kovner, Alex
name: Levin, Eugene
name: Li, Ming
name: Lublinsky, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Further developing ideas set forth in \cite{KLL}, we discuss QCD Reggeon Field Theory (RFT) and formulate restrictions imposed on its Hamiltonian by the unitarity of underlying QCD. We identify explicitly the QCD RFT Hilbert space, provide algebra of the basic degrees of freedom (Wilson lines and their duals) and the algorithm for calculating the scattering amplitudes. We formulate conditions imposed on the "Fock states" of RFT by unitary nature of QCD, and explain how these constraints appear as unitarity constraints on possible RFT hamiltonians that generate energy evolution of scattering amplitudes. We study the realization of these constraints in the dense-dilute limit of RFT where the appropriate Hamiltonian is the JIMWLK Hamiltonian $H_{JIMWLK}$. We find that the action $H_{JIMWLK}$ on the dilute projectile states is unitary, but acting on dense "target" states it violates unitarity and generates states with negative probabilities through energy evolution.
description: 30 pages, 3 figures, added discussions on IR-divergence as suggested by the referee
Effective magnetic field induced by inhomogeneous Fermi velocity in strained honeycomb structures
Creators: name: Oliva-Leyva, M.
name: Barrios-Vargas, J. E.
name: de la Cruz, G. Gonzalez
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In addition to the known pseudomagnetic field, nonuniform strains independently induce a position-dependent Fermi velocity (PDFV) in graphene. Here we demonstrate that, due to the presence of a PDFV, the Dirac fermions on a nonuniform (strained) honeycomb lattice may experiment a sort of magnetic effect, which is linearly proportional to the momentum of the quasiparticle. As a consequence, the quasiparticles have a sublinear dispersion relation. Moreover, we analyze the general consequence of a PDFV on the Klein tunneling of electrons through pseudomagnetic barriers. In particular, we report an anomalous (Klein) tunneling for an electron passing across velocity barriers with magnetic features. Our findings about the effects induced by a PDFV on Dirac fermions in (2D) strained honeycomb lattice could be extended to (3D) Dirac and Weyl semimetals and/or its analogous artificial systems.
description: 10 pages, 5 figures; final version as published in PRB
The formation and retention of gas giant planets around stars with a range of metallicities
Creators: name: Ida, S.
name: Lin, D. N. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The apparent dependence of detection frequency of extrasolar planets on the metallicity of their host stars is investigated with Monte Carlo simulations using a deterministic core-accretion planet formation model. According to this model, gas giants formed and acquired their mass $M_{\rm p}$ through planetesimal coagulation followed by the emergence of cores onto which gas is accreted. These protoplanets migrate and attain their asymptotic semi-major axis $a$ through their tidal interaction with their nascent disk. Based on the observed properties of protostellar disks, we generate $M_{\rm p}$-$a$ distribution. Our results reproduce the observed lack of planets with intermediate mass $M_{\rm p} = 10$--100$M_{\oplus}$ and $a \la 3$AU and with large mass $M_{\rm p} \ga 10^3 M_{\oplus}$ and $a \la 0.2$AU. Based on the simulated $M_{\rm p}$-$a$ distributions, we also evaluate the metallicity dependence of fraction of stars harboring planets that are detectable with current radial velocity survey. If protostellar disks attain the same fraction of heavy elements which are contained in their host stars, the detection probability around metal-rich stars would be greatly enhanced because protoplanetary cores formed in them can grow to several Earth masses prior to their depletion. These large masses are required for the cores to initiate rapid gas accretion and to transform into giant planets. The theoretically extrapolated metallicity dependence is consistent with the observation. This correlation does not arise naturally in the gravitational-instability scenario. We also suggest other metallicity dependence of the planet distributions that can be tested by on-going observations.
description: accepted by Astrophys. J
SIZE AND DISTRIBUTION OF MARKET BENEFITS FROM ADOPTING BIOTECH CROPS
Creators: name: Price, Gregory K.
name: Lin, William W.
name: Falck-Zepeda, Jose Benjamin
name: Fernandez-Cornejo, Jorge
name: Price, Gregory K.
name: Lin, William W.
name: Falck-Zepeda, Jose Benjamin
name: Fernandez-Cornejo, Jorge
Publisher: name: Unknown
Year: 2003
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: Agricultural biotechnology
subject: FOS: Agricultural biotechnology
subject: distribution of benefits
subject: Bt cotton
subject: herbicide-tolerant cotton
subject: herbicide-tolerant soybeans

description: This study estimates the total benefit arising from the adoption of agricultural biotechnology in one year (1997) and its distribution among key stakeholders along the production and marketing chain. The analysis focuses on three biotech crops: herbicide-tolerant soybeans, insect-resistant (Bt) cotton, and herbicide-tolerant cotton. Adoption of these crops resulted in estimated market benefits of $212.5-$300.7 million for Bt cotton, $231.8 million for herbicide-tolerant cotton, and $307.5 million for herbicide-tolerant soybeans. These benefits accounted for small shares of crop production value, ranging from 2 percent to 5 percent. U.S. farmers captured a much larger share (about a third) of the benefits for Bt cotton than with herbicide-tolerant soybeans (20 percent) and herbicide-tolerant cotton (4 percent). Innovators' share ranged from 30 percent for Bt cotton to 68 percent for herbicide-tolerant soybeans. For herbicide-tolerant cotton, U.S. consumers and the rest of the world (including both producers and consumers) received the bulk of the estimated benefits in 1997. Estimated benefits and their distribution depend on the specification of the analytical framework, supply and demand elasticity assumptions, the inclusion of market and nonmarket benefits, crops considered, and year-specific factors (such as weather and pest infestation levels).
RISK, GOVERNMENT PROGRAMS, AND THE ENVIRONMENT
Creators: name: Roberts, Michael J.
name: Osteen, Craig D.
name: Soule, Meredith J.
name: Roberts, Michael J.
name: Osteen, Craig D.
name: Soule, Meredith J.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Risk and Uncertainty
subject: risk
subject: agricultural production
subject: government programs
subject: environment

description: Nearly all farm business ventures involve financial risk. In some instances, private and public tools used to manage financial risks in agriculture may influence farmers' production decisions. These decisions, in turn, can influence environmental quality. This bulletin summarizes research and provides some perspective on private and public attempts to cope with financial risks and their unintended environmental consequences. Specifically, it examines the conceptual underpinnings of risk-related research, challenges involved with measuring the consequences of risk for agricultural production decisions, government programs that influence the risk and return of farm businesses, and how production decisions influence both the environment and the risk and average returns to farming.
Nonlinear Ionic Conductivity of Thin Solid Electrolyte Samples: Comparison between Theory and Experiment
Creators: name: Heuer, Andreas
name: Murugavel, Sevi
name: Roling, Bernhard
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Nonlinear conductivity effects are studied experimentally and theoretically for thin samples of disordered ionic conductors. Following previous work in this field the {\it experimental nonlinear conductivity} of sodium ion conducting glasses is analyzed in terms of apparent hopping distances. Values up to 43 Åare obtained. Due to higher-order harmonic current density detection, any undesired effects arising from Joule heating can be excluded. Additionally, the influence of temperature and sample thickness on the nonlinearity is explored. From the {\it theoretical side} the nonlinear conductivity in a disordered hopping model is analyzed numerically. For the 1D case the nonlinearity can be even handled analytically. Surprisingly, for this model the apparent hopping distance scales with the system size. This result shows that in general the nonlinear conductivity cannot be interpreted in terms of apparent hopping distances. Possible extensions of the model are discussed.
description: 7 pages, 6 figures
System descriptions
Creators: name: F. (Fabiano) Dalpiaz
Publisher: name: Utrecht University
Year: 2020
Subjects: subject: 80603 Conceptual Modelling
subject: FOS: Computer and information sciences
subject: Information Systems
subject: Computer Software

description: System descriptions for- A: portal for the international foodball association- B: hospital management system- C: urban traffic simulator