cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Determinants of Adoption of Mini-Tuber Seed Potato: A Case in Ardabil Province of Iran
Creators: name: Bagheri, Asghar
name: Bagheri, Asghar
Publisher: name: Unknown
Year: 2015
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Potato
subject: Mini-tuber seed
subject: Adoption
subject: Ardabil

description: The aim of this study was to examine factors affecting adoption of mini-tuber seed potato. Survey research design was used in this study. A sample of 100 potato growers who were informed about mini-tuber was selected and divided into adopter and non-adopter groups. Questionnaire was used as the instrument for data collection and was validated by a panel of experts. A pilot study was conducted for reliability and Cronbach’s alphas obtained 0.77- 0.87. Results revealed that other farmers were the main source of information for respondents. Higher yield, healthy seeds, marketability and high quality of potato produced from mini-tuber seeds were the main important reasons of adoption. Non-adopters mentioned high cost of mini-tuber seed as the main factor for rejection. The result of t-test showed that adopters had used more farm machineries and equipments. Result further showed that among farming unit characteristics, the number of pieces of owned farmland had negative effect on the adoption. However, the adoption was positively affected by the extent of owned farmlands and extent of owned potato acreage. Among personal characteristics, education level, number of literate household members had positive effect while farmers’ age and farming experience had negative effect on the adoption, respectively.
Estimating the Value of Improvement in Lake Urmia’s Environmental Situation Using Choice Experiment
Creators: name: Salehnia, Mina
name: Hayati, Baballah
name: Ghahremanzadeh, Mohammad
name: Molaei, Morteza
name: Salehnia, Mina
name: Hayati, Baballah
name: Ghahremanzadeh, Mohammad
name: Molaei, Morteza
Publisher: name: Unknown
Year: 2015
Subjects: subject: Environmental Economics and Policy
subject: Institutional and Behavioral Economics
subject: Public Economics
subject: Choice Experiment
subject: Lake Urmia
subject: Random parameters logit model
subject: Willingness to pay

description: The Lake Urmia and its satellite wetlands have been selected as a demonstration site for the United Nations Development Program/Global Environment Facility/Department of Environment Conservation of Iranian Wetlands Project. This project aims to demonstrate reduction of the major threats of this wetland protected area coordinated through an integrated management plan. A choice experiment was developed to examine public preferences and elicit their willingness to pay on improvements in lake’s indicators toward good environmental status. A pilot choice experiment study was administered in Urmia municipality and the data were analyzed using a random parameter logit model. The results revealed that residents of this municipality might strongly prefer improvement in water quantity and were willing to pay significant amounts to promote current water level to the highest level. Furthermore, water quality, numbers of flamingos and Artemia stock were identified as the next important issues which warranted additional management attention.
Quantum Sampling Algorithms for Near-Term Devices
Creators: name: Wild, Dominik S.
name: Sels, Dries
name: Pichler, Hannes
name: Zanoci, Cristian
name: Lukin, Mikhail D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Efficient sampling from a classical Gibbs distribution is an important computational problem with applications ranging from statistical physics over Monte Carlo and optimization algorithms to machine learning. We introduce a family of quantum algorithms that provide unbiased samples by preparing a state encoding the entire Gibbs distribution. We show that this approach leads to a speedup over a classical Markov chain algorithm for several examples including the Ising model and sampling from weighted independent sets of two different graphs. Our approach connects computational complexity with phase transitions, providing a physical interpretation of quantum speedup. Moreover, it opens the door to exploring potentially useful sampling algorithms on near-term quantum devices as the algorithm for sampling from independent sets on certain graphs can be naturally implemented using Rydberg atom arrays.
Environmental Policy, Science & Technology: Illuminating the Interconnectivity of Global Ecology Through Maximum Entropy
Creators: name: Caspersen, Shea
Publisher: name: American University
Year: 2023

description: Rapid climate change has become perceived as the major threat to planetary stability of our time, forcing fundamental changes to the multiple spheres of the climate system--the cryosphere, lithosphere, biosphere, hydrosphere--that make the Earth a livable planet. Though it may not sequester the most carbon at any given period of time, among these spheres the biosphere is responsible for the greatest flux in the carbon cycle. Climate change is also predicted to become a salient driver of biodiversity loss, exposing its influence on the biosphere as well. Under the climate change paradigm forests--a salient aspect of the biosphere--may be considered as both biodiversity and biosequestration (i.e. the sequestration of carbon via life) hotspots. Given the forest-climate interconnectivity potentially adverse feedbacks create a moral prerogative of stewardship illuminated by a strong environmental ethic. Thus, advanced statistical computer modeling--the Maximum Entropy model--was employed to test the effects of climate change on terrestrial ecology: namely forests. These Maximum Entropy, or MaxEnt, simulations specifically tested to see if potential future climate scenarios would lead to expansions or contractions in woodland areas of the three major forest biomes (i.e. boreal, temperate, and tropical) for comparative purposes. Modeling iterations with high levels of atmospheric CO2 concentrations--8.5 watts of radiative forcing for the 2050's and 2070's--forecasted the largest degree of woodland expansion to take place within the boreal region, whereas the Amazon region presented the least growth for such simulations. While simulations for the temperate zone divulged moderate growth on average under climate change we have already seen a great increase in disturbance regimes in the US--fires, droughts, pine beetle outbreaks--increasing tree mortality rates. Consequentially, valid first approximations were still able to be derived from subsequent modeling results for general regional policy recommendations, while such omissions in the parameterization of the model opened up the discussion to further recommendations for science and technology as well.
Spectral analysis of the precessional switching of the magnetization in an isotropic thin film
Creators: name: Devolder, T.
name: Chappert, C.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study how a magnetic field step triggers the precessional switching of the magnetization in an isotropic thin film . Using a variational approach, we estimate analytically the switching frequency and compare it to the results obtained numerically by direct integration of the equations of motion. We show that the periodic motions of the three magnetization components can be described satisfactorily with truncated Fourier expansions, indicating a relatively high spectral purity of the magnetic response. Our analytical expressions are simple enough to be physically transparent at first sight, in contrast to the results of the more elaborate models that treat also anisotropy.
Magnetohydrodynamic modelling of star-planet interaction and associated auroral radio emission
Creators: name: Turnpenney, Sam
name: Nichols, Jonathan D.
name: Wynn, Graham A.
name: Jia, Xianzhe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present calculations of auroral radio powers of magnetised hot Jupiters orbiting Sun-like stars, computed using global magnetohydrodynamic (MHD) modelling of the magnetospheric and ionospheric convection arising from the interaction between the magnetosphere and the stellar wind. Exoplanetary auroral radio powers are traditionally estimated using empirical or analytically-derived relations, such as the Radiometric Bode's Law (RBL), which relates radio power to the magnetic or kinetic energy dissipated in the stellar wind-planet interaction. Such methods risk an oversimplification of the magnetospheric electrodynamics giving rise to radio emission. As the next step toward a self-consistent picture, we model the stellar wind-magnetosphere-ionosphere coupling currents using a 3D MHD model. We compute electron-cyclotron maser instability-driven emission from the calculated ionospheric field-aligned current density. We show that the auroral radio power is highly sensitive to interplanetary magnetic field (IMF) strength, and that the emission is saturated for plausible hot Jupiter Pedersen conductances, indicating that radio power may be largely independent of ionospheric conductance. We estimate peak radio powers of $10^{14}$ W from a planet exposed to an IMF strength of $10^3$ nT, implying flux densities at a distance of 15 pc from Earth potentially detectable with current and future radio telescopes. We also find a relation between radio power and planetary orbital distance that is broadly consistent with results from previous analytic models of magnetosphere-ionosphere coupling at hot Jupiters, and indicates that the RBL likely overestimates the radio powers by up to two orders of magnitude in the hot Jupiter regime
description: 13 pages, 10 figures
Classical q-deformed dynamics
Creators: name: Lavagno, A.
name: Scarfone, A. M.
name: Swamy, P. Narayana
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: On the basis of the quantum q-oscillator algebra in the framework of quantum groups and non-commutative q-differential calculus, we investigate a possible q-deformation of the classical Poisson bracket in order to extend a generalized q-deformed dynamics in the classical regime. In this framework, classical q-deformed kinetic equations, Kramers and Fokker-Planck equations, are also studied. Pacs: 05.20.Dd, 45.20.-d, 02.20.Uw Keywords: Kinetic theory, q-deformed classical mechanics, quantum groups, quantum algebras
description: 8 pages, RevTex4; contribution to the international conference "Next Sigma Phi" on News, EXpectations, and Trends in statistical physics, Crete 2005
Ex-ante Impact Study on the Integrated Natural Resources Management in the Middle East and North Africa Region Rangelands Rehabilitation Project in Iran
Creators: name: Shahbazi, Habib
name: Alipour, Hamidreza
name: Abbasifar, Akram
name: Shahbazi, Habib
name: Alipour, Hamidreza
name: Abbasifar, Akram
Publisher: name: Unknown
Year: 2015
Subjects: subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: Impact Study
subject: MENARID
subject: Rangelands rehabilitation
subject: ICARDA
subject: Kamkooyeh Village
subject: Iran

description: The purpose of the Integrated Natural Resources Management program in the Middle East and North Africa Region (MENARID) is to bring national investment projects in the field of Integrated Natural Resource Management (INRM). The impact evaluation study tests whether the selected technology has significantly contributed to restore and maintain of the ecosystem functions and productivity, and whether has improved the economic and social well-being of the targeted communities. We chose Kamkooyeh Village in the Behabad County where a "Village Development Group" (VDG) has been established by following participatory and capacity building approaches such as social mobilization and micro credit mechanism. A set of complementary activities and interventions were recommended and implemented in the site by consultation and active participation of the local communities and beneficiaries. One of the proposed interventions is rangelands rehabilitation project (RRP). The expected benefits and costs of the RRP were predicted through financial valuation and an ex-ante evaluation of socioeconomic impacts. The financial and social benefit-cost ratio of RRP was estimated to be about 0.97 and 2.15, respectively.
Financieros ecuatorianos enfrentando la revolución Industrial 4
Creators: name: Ortiz, Francisco
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 350202
subject: Finance

description: Una vez que llegó el tiempo de la Transformación Digital (TD) a nivel mundial y el impacto que representa para todas las organizaciones en la denominada Industria 4.0, es importante desarrollar un análisis crítico del rol del Financiero en todos los niveles operativos, de supervisión y lo estratégico para entender como interactúa la transformación tecnológica en los diferentes modelos y procesos en el área financiera de toda organización. Existe un desafío de cara al futuro en la Industria 4.0 es imprescindible conocer los pasos que se requiere dar para aprovechar las oportunidades y beneficios que fundamentalmente se encuentran encaminados a dotar al Financiero de un amplio espectro de datos e información dentro de poderosas herramientas que acompañan en la gestión financiera diaria para la toma de decisiones, vemos que hoy más líderes de negocios están vinculándose a este movimiento que llega de forma acelerada a cambiar visiones y paradigmas que no los veíamos en la Industria 3.0 pero que estaban limitando el potencial de actuación, la llegada de la Inteligencia Artificial (IA) provee de modelos y escenarios sin límites que prácticamente no interactuar nos deja en una desventaja sin precedentes.
Environmental Policy, Science & Technology: Illuminating the Interconnectivity of Global Ecology Through Maximum Entropy
Creators: name: Caspersen, Shea
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 4407
subject: Policy and administration

description: Rapid climate change has become perceived as the major threat to planetary stability of our time, forcing fundamental changes to the multiple spheres of the climate system--the cryosphere, lithosphere, biosphere, hydrosphere--that make the Earth a livable planet. Though it may not sequester the most carbon at any given period of time, among these spheres the biosphere is responsible for the greatest flux in the carbon cycle. Climate change is also predicted to become a salient driver of biodiversity loss, exposing its influence on the biosphere as well. Under the climate change paradigm forests--a salient aspect of the biosphere--may be considered as both biodiversity and biosequestration (i.e. the sequestration of carbon via life) hotspots. Given the forest-climate interconnectivity potentially adverse feedbacks create a moral prerogative of stewardship illuminated by a strong environmental ethic. Thus, advanced statistical computer modeling--the Maximum Entropy model--was employed to test the effects of climate change on terrestrial ecology: namely forests. These Maximum Entropy, or MaxEnt, simulations specifically tested to see if potential future climate scenarios would lead to expansions or contractions in woodland areas of the three major forest biomes (i.e. boreal, temperate, and tropical) for comparative purposes. Modeling iterations with high levels of atmospheric CO2 concentrations--8.5 watts of radiative forcing for the 2050's and 2070's--forecasted the largest degree of woodland expansion to take place within the boreal region, whereas the Amazon region presented the least growth for such simulations. While simulations for the temperate zone divulged moderate growth on average under climate change we have already seen a great increase in disturbance regimes in the US--fires, droughts, pine beetle outbreaks--increasing tree mortality rates. Consequentially, valid first approximations were still able to be derived from subsequent modeling results for general regional policy recommendations, while such omissions in the parameterization of the model opened up the discussion to further recommendations for science and technology as well.
Selmer Groups over p-adic Lie Extensions I
Creators: name: Zerbes, Sarah Livia
Publisher: name: arXiv
Year: 2004
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G05; 11G10; 11G40

description: Let $E$ be an elliptic curve defined over a number field $F$. In this paper, we study the structure of the $p^\infty$-Selmer group of $E$ over $p$-adic Lie extensions $F_\infty$ of $F$ which are obtained by adjoining to $F$ the $p$-division points of an abelian variety $A$ defined over $F$. The main focus of the paper is the calculation of the $\Gal(F_\infty/F)$-Euler characteristic of the $p^\infty$-Selmer group of $E$. The final section illustrates the main theory with the example of an elliptic curve of conductor 294.
description: 23 pages
Microscopic Origin of Spin-Orbit Torque in Ferromagnetic Heterostructures: A First Principles Approach
Creators: name: Mahfouzi, Farzad
name: Mishra, Rahul
name: Chang, Po-Hao
name: Yang, Hyunsoo
name: Kioussis, Nicholas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present an {\it ab initio}-based theoretical framework which elucidates the origin of the spin-orbit torque (SOT) in Normal-Metal(NM)/Ferromagnet(FM) heterostructures. The SOT is decomposed into two contributions, namely, {\it spin-Hall} and the {\it spin-orbital} components. We find that {\it (i)} the Field-Like (FL) SOT is dominated by the spin-orbital component and {\it (ii)} both components contribute to the damping-like torque with comparable magnitude in the limit of thick Pt film. The contribution of the spin-orbital component to the DL-SOT is present only for NMs with strong SOC coupling strength. We demonstrate that the FL-SOT can be expressed in terms of the non-equilibrium spin-resolved orbital moment accumulation. The calculations reveal that the experimentally reported oxygen-induced sign-reversal of the FL-SOT in Pt/Co bilayers is due to the significant reduction of the majority-spin orbital moment accumulation on the interfacial NM atoms.
description: 7 pages, 3 figures
Complete one--loop corrections to e+e- -> sf_i sf_j
Creators: name: Kovarik, K.
name: Weber, C.
name: Eberl, H.
name: Majerotto, W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have calculated the complete one-loop corrections to the sfermion pair production process e+e- -> sf_i sf_j (f = t, b, tau, tau-neutrino) in the Minimal Supersymmetric Standard Model. Our results also include the previously calculated SUSY-QCD corrections. We present the details of the renormalization scheme used. It is found that the weak corrections are of the same magnitude as the SUSY-QCD corrections at higher energies (sqrt(s) ~ 1TeV). At these energies the main part of the weak corrections stems from the box contribution. This is best seen in sneutrino production.
description: 15 pages, 7 figures, shortened version for publication
Identifying the Organizational Intelligence of Agriculture-Jihad Organization in Guilan Province, Iran
Creators: name: Eftekhari, Hajar
name: Allahyari, Mohammad Sadegh
name: Eftekhari, Hajar
name: Allahyari, Mohammad Sadegh
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agricultural and Food Policy
subject: Institutional and Behavioral Economics
subject: Labor and Human Capital
subject: Organizational intelligence
subject: Agricultural organization
subject: Confirmatory factor analysis

description: In the modern world, organizations are considered as intelligent systems. Increased Organizational Intelligence (OI) helps organizations to effectively analyze their data, store results, and use outcomes for making professional decisions. The purpose of this study was to measure OI in Agriculture- Jihad Organization in Guilan. A sample of 201 out of personnel was selected from in Agriculture- Jihad Organization in Guilan (N=1296) through a proportional cluster sampling technique. The instrument of the study included 7 intelligence constructs measured against 49 items. Results indicated a medium level of OI in the Guilan Agricultural- Jihad Organization. Among the intelligence components, ‘shared fate’ received highest ratings and ‘appetite for change’ received the lowest ratings. The confirmatory factor analysis indicated that of the seven intelligence components, the ‘heart’ explained highest proportion of variance for describing OI. Findings have implication for designing policies and developing programs for enhancing the OI. It is recommended that Agriculture- Jihad Organization in Guilan should examine and measure their OI and identify strategies to achieve a high level of OI needed for professional success.
Two theorems about maximal Cohen--Macaulay modules
Creators: name: Huneke, Craig
name: Leuschke, Graham J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13C14; 13A35

description: This paper contains two theorems concerning the theory of maximal Cohen--Macaulay modules. The first theorem proves that certain Ext groups between maximal Cohen--Macaulay modules $M$ and $N$ must have finite length, provided only finitely many isomorphism classes of maximal Cohen--Macaulay modules exist having ranks up to the sum of the ranks of $M$ and $N$. This has several corollaries. In particular it proves that a Cohen--Macaulay local ring of finite Cohen--Macaulay type has an isolated singularity. A well-known theorem of Auslander gives the same conclusion but requires that the ring be Henselian. Other corollaries of our result include statements concerning when a ring is Gorenstein or a complete intersection on the punctured spectrum, and the recent theorem of Leuschke and Wiegand that the completion of an excellent Cohen--Macaulay local ring of finite Cohen--Macaulay type is again of finite Cohen--Macaulay type. The second theorem proves that a complete local Gorenstein domain of positive characteristic $p$ and dimension $d$ is $F$-rational if and only if the number of copies of $R$ splitting out of $R^{1/p^e}$ divided by $p^{de}$ has a positive limit. This result generalizes work of Smith and Van den Bergh. We call this limit the $F$-signature of the ring and give some of its properties.
description: 14 pages
Squamapion kandarense
Creators: name: Giusto, Carlo
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Apionidae
Squamapion
Squamapion kandarense

description: Squamapion kandarense (Hustache, 1946)
  MOROCCO — Meknes : Ifrane Province: Ain Leuh, 11.VI.2013, F. Angelini leg. (1 ♀ CG).
description: Published as part of Giusto, Carlo, 2021, Squamapion gardinii n. sp. from the Mediterranean Region and notes on some species belonging to the genus Squamapion Bokor, 1923 (Coleoptera, Apionidae), pp. 217-238 in Zootaxa 4941 (2) on page 237, DOI: 10.11646/zootaxa.4941.2.4, http://zenodo.org/record/4595018
electron-positron-photon plasma around a collapsing star
Creators: name: Ruffini, R.
name: Vitagliano, L.
name: Xue, S. -S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe electron-positron pairs creation around an electrically charged star core collapsing to an electromagnetic black hole (EMBH), as well as pairs annihilation into photons. We use the kinetic Vlasov equation formalism for the pairs and photons and show that a regime of plasma oscillations is established around the core. As a byproduct of our analysis we can provide an estimate for the thermalization time scale.
description: 8 pages, 4 figures, to appear in the Proceedings of QABP2003
The Preparation of Updated Vegetation Maps by Processing Satellite Images: A Way in Sustainable Management of Agriculture
Creators: name: Torkashvand, Ali Mohammadi
name: Zahedi, Shahryar Sobhe
name: Torkashvand, Ali Mohammadi
name: Zahedi, Shahryar Sobhe
Publisher: name: Unknown
Year: 2015
Subjects: subject: Land Economics/Use
subject: Research and Development/Tech Change/Emerging Technologies
subject: Agriculture management
subject: Satellite images
subject: Sustainable agriculture
subject: Vegetation

description: An important factor in sustainable agriculture and economic management is to calculate areas under different crops that the inputs of agriculture connect to this topic. Planning of agricultural mechanization, fertilizer and pesticide requirements, pests and diseases control, estimates of agricultural production, income and tax and financial planning, all linked to the cultivated areas and estimation of agricultural products. One of the problems in the agricultural section of Iran is the lack of accurate statistics of cultivated crops areas that this is much higher for horticultural products. Over time, it varies the area of land under cultivated crop, and orchards and bare lands; consequently the estimation of yield is not done as well due to these changes caused some problems in planning and management. Land Surveying is time-consuming and expensive, while mapping farms and orchards lands through classified satellite images is a high speed and low cost way. Nowadays, the satellite image processing techniques have developed for the estimation of crops, pest control, agricultural macro planning and preparing updated maps. A principal problem is the interference of plants spectral reflections that different methods have been proposed by researchers to differentiate vegetation on satellite images. At this paper, remote sensing imagery in mapping vegetation or various plants are investigated.
Additional file 9 of Spatial modelling of the infestation indices of Aedes aegypti: an innovative strategy for vector control actions in developing countries
Creators: name: Cavalcante, Ana Carolina Policarpo
name: Olinda, Ricardo Alves De
name: Gomes, Alexandrino
name: Traxler, John
name: Smith, Matt
name: Santos, Silvana
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Additional file 9: Figure S9. Moran scatterplots of the HI data, the LISA maps, and the Moran maps in 2016.
ANALYSIS OF MOF-5 WITH ABS AND PLA FOR USES IN ADDITIVE MANUFACTURING
Creators: name: Channell, Megan
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences

description: Metal organic frameworks (MOFs) are a relatively new class of functional materials that are specifically noted for their ability to store gasses. Of the thousands of different MOFs that have been synthesized, one of the most prominent is MOF-5. MOF-5 has a cubic shape with interior channels that allow for trapping gas molecules within its structure. All MOFs are produced in powder form. This limits their ability to be processed and, consequently, their utility to industry. To harness the functionality of MOFs for industrial products, these materials must be incorporated within a matrix that can be processed and formed into any number of shapes and architectures. In this study, we have incorporated MOF-5 within the polymer acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA). ABS and PLA are the primary polymers being used in commercial 3-D printers for additive manufacturing. Through 3-D printing, these polymers can be deposited in any number of shapes and structures. We have incorporated MOF-5 into ABS at several weight percentages and produced 3-D printing filaments with these composite materials. We incorporated MOF-5 into PLA films but, as yet, have been unable to produce filaments that can be 3-D printed with this material. We have printed several structures with these filaments and tested the chemical and physical properties of the 3-D printed materials. Notably, the melting properties of the ABS-MOF-5 composite do not differ significantly from pure ABS. The tensile strength of printed ABS-MOF-5 structures is increased relative to that of printed ABS structures. MOF-5 retains its crystalline structure upon incorporation into ABS. Research is currently underway that tests the ability of printed ABS-MOF-5 structures to store gasses.
T duality and Wald entropy formula in the Heterotic Superstring effective action at first order in $α'$
Creators: name: Elgood, Zachary
name: Ortin, Tomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the compactification on a circle of the Heterotic Superstring effective action to first order in the Regge slope parameter $α'$ and re-derive the $α'$-corrected Buscher rules first found in arXiv:hep-th/9506156 , proving the T duality invariance of the dimensionally-reduced action to that order in $α'$. We use Iyer and Wald's prescription to derive an entropy formula that can be applied to black-hole solutions which can be obtained by a single non-trivial compactification on a circle and discuss its invariance under the $α'$-corrected T duality transformations. This formula has been successfully applied to $α'$-corrected 4-dimensional non-extremal Reissner-Nordström black holes in arXiv:1910.14324 and we apply it here to a heterotic version of the Strominger-Vafa 5-dimensional extremal black hole.
description: Misprints in intermediate equations corrected in agreement with the erratum submitted to the journal. Final results not affected
Clifford algebras, spinors and fundamental interactions : Twenty Years After
Creators: name: Coquereaux, Robert
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This is a short review of the algebraic properties of Clifford algebras and spinors. Their use in the description of fundamental physics (elementary particles) is also summarized. Lecture given at the ICCA7 conference, Toulouse (23/05/2005)
description: 14 pages
ANALYSIS OF MOF-5 WITH ABS AND PLA FOR USES IN ADDITIVE MANUFACTURING
Creators: name: Channell, Megan
Publisher: name: American University
Year: 2023

description: Metal organic frameworks (MOFs) are a relatively new class of functional materials that are specifically noted for their ability to store gasses. Of the thousands of different MOFs that have been synthesized, one of the most prominent is MOF-5. MOF-5 has a cubic shape with interior channels that allow for trapping gas molecules within its structure. All MOFs are produced in powder form. This limits their ability to be processed and, consequently, their utility to industry. To harness the functionality of MOFs for industrial products, these materials must be incorporated within a matrix that can be processed and formed into any number of shapes and architectures. In this study, we have incorporated MOF-5 within the polymer acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA). ABS and PLA are the primary polymers being used in commercial 3-D printers for additive manufacturing. Through 3-D printing, these polymers can be deposited in any number of shapes and structures. We have incorporated MOF-5 into ABS at several weight percentages and produced 3-D printing filaments with these composite materials. We incorporated MOF-5 into PLA films but, as yet, have been unable to produce filaments that can be 3-D printed with this material. We have printed several structures with these filaments and tested the chemical and physical properties of the 3-D printed materials. Notably, the melting properties of the ABS-MOF-5 composite do not differ significantly from pure ABS. The tensile strength of printed ABS-MOF-5 structures is increased relative to that of printed ABS structures. MOF-5 retains its crystalline structure upon incorporation into ABS. Research is currently underway that tests the ability of printed ABS-MOF-5 structures to store gasses.
Extent of the Use of Drought Management Practices by Farmers in Tafresh County
Creators: name: Bagheri, Maryam
name: Nikanami, Mehrdad
name: Fami, Hossein Shabanali
name: Bagheri, Maryam
name: Nikanami, Mehrdad
name: Fami, Hossein Shabanali
Publisher: name: Unknown
Year: 2015
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: Drought
subject: Drought management
subject: Capability
subject: Tafresh

description: The extent of utilization of drought management practices by the farmers of Tafresh County was studied in a descriptive-correlational research. Statistical population consisted of all farmers in Tafresh County which summed up to around 9061 people out of which 300 farmers were taken as the sample in accordance with Cochran’s formula. The main tool of the study was a questionnaire. The validity of the questionnaire was confirmed by a panel of expert consisting of some faculty members of Islamic Azad University, Garmsar Branch and the University of Tehran, and the reliability of the questionnaire was estimated as to be 0.848 using Cronbach Alpha. The results of correlation test indicated a direct, significant relationship between the extent of utilization of drought management practices and the variables of agricultural activities experience and the level of farmers’ social capabilities at 0.01 level. Moreover, there was a negative significant relationship among age, farming experience and the application of drought management practices at 0.01 level. Finally, the results of multiple regression analysis showed that three variables, i.e. extent of farmers’ social capabilities, experience of agricultural activities and the age of the farmers, had the greatest influence on the extent of utilization of drought management practices.
Additional file 1 of A randomized controlled trial of daily weighing in pregnancy to control gestational weight gain
Creators: name: Arthur, Christopher
name: Corleto, Ellen Di
name: Ballard, Emma
name: Kothari, Alka
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1 Supplementary Table 1. Maternal demographics by treatment group for those women lost to follow-up.
Open and FAIR Science with a case study from the FAIR Phytoliths project.
Creators: name: Karoune, Emma
Publisher: name: Zenodo
Year: 2024

description: This presentation was given for the Current Topics in Heritage Science lecture series for Iperion HS Academy. 

Abstract:

There is a growing need to implement open science practices in archaeology with requirements from funders for open access outputs and a need to produce more reproducible and accessible research to make it more sustainable for future use. This lecture will introduce you to the main practices of open science and why it is important for all researchers to start moving towards more open working in archaeology. It will include a discussion of the benefits of practising open science as well as touch on the barriers that have to be overcome. There will also be a case study about the FAIR Phytoliths project - this is a project that aimed to assess phytolith data in terms of the FAIR data principles and has formed an open community to tackle implementation of open science practices.
On the validation of Newcomb-Benford law and Weibull distribution in neuromuscular transmission
Creators: name: da Silva, A. J.
name: Floquet, S.
name: Santos, D. O. C.
name: Lima, R. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The neuromuscular junction represents a relevant substrate for revealing important biophysical mechanisms of synaptic transmission. In this context, calcium ions are important in the synapse machinery, providing the nervous impulse transmission to the muscle fiber. In this work, we carefully investigated whether intervals of spontaneous electrical activity, recorded in seven different calcium concentrations, conform Newcomb-Benford law. Our analysis revealed that electrical discharge of neuromuscular junction obeys the expected values for Newcomb-Benford law for first and second digits, while first-two digits do not perfectly follows the law. We next examined previous theoretical studies, establishing a relation between the law and lognormal and Weibull distributions. We showed that Weibull distribution is more appropriate to fit the intervals as compared to lognormal distribution. Altogether, the present findings strongly suggest that spontaneous activity is a base-scale invariant phenomenon.
description: 16 pages, 4 figures, submitted to publication
Additional file 7 of Spatial modelling of the infestation indices of Aedes aegypti: an innovative strategy for vector control actions in developing countries
Creators: name: Cavalcante, Ana Carolina Policarpo
name: Olinda, Ricardo Alves De
name: Gomes, Alexandrino
name: Traxler, John
name: Smith, Matt
name: Santos, Silvana
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Additional file 7: Figure S7. Moran scatterplots of the HI data, the LISA maps, and the Moran maps in 2015.
The Age of the Oldest Stars in the Local Galactic Disk From Hipparcos Parallaxes of G and K Subgiants
Creators: name: Sandage, A.
name: Lubin, L. M.
name: VandenBerg, D. A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review the history of the discovery of field subgiant stars and their importance in the age dating of the Galactic disk. We use the cataloged data from the Hipparcos satellite in this latter capacity. Based on Hipparcos parallaxes accurate to 10% or better, the absolute magnitude of the lower envelope of the nearly horizontal subgiant sequence for field stars in the H-R diagram for B-V colors between 0.85 and 1.05 is measured to be M_V = 4.03 +/- 0.06. The age of the field stars in the solar neighborhood is found to be 7.9 +/- 0.7 Gyr by fitting the theoretical isochrones for [Fe/H] = +0.37 to the lower envelope of the Hipparcos subgiants. The same grid of isochrones yields ages, in turn, of 4.0 +/- 0.2 Gyr, 6.2 +/- 0.5 Gyr, and 7.5 to 10 Gyr for the old Galactic clusters M67, NGC188, and NGC6791. The ages of both the Galactic disk in the solar neighborhood and of NGC6791 are, nevertheless, likely between 3 and 5 Gyr younger than the oldest halo globular clusters, which have ages of 13.5 Gyr. The most significant results are (1) the supermetallicity of the oldest local disk stars, and (2) the large age difference between the most metal-poor component of the halo and the thick and thin disk in the solar neighborhood. These facts are undoubtedly related and pose again the problem of the proper scenario for the timing of events in the formation of the halo and the Galactic disk in the solar neighborhood. [Abstract Abridged]
description: 44 pages, 12 Figures; accepted for publication in PASP; high resolution versions of Figures 1, 2, 6 and 9 available at http://bubba.ucdavis.edu/~lubin/Sandage/
Geometry of Prym varieties for special bielliptic curves of genus three and five
Creators: name: Clingher, Adrian
name: Malmendier, Andreas
name: Shaska, Tony
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H40, 14J28

description: We construct two pencils of bielliptic curves of genus three and genus five. The first pencil is associated with a general abelian surface with a polarization of type $(1,2)$. The second pencil is related to the first by an unramified double cover, the Prym variety of which is canonically isomorphic to the Jacobian of a very general curve of genus two. Our results are obtained by analyzing suitable elliptic fibrations on the associated Kummer surfaces and rational double covers among them.
description: 35 pages, 4 figures
Electron-phonon induced spin relaxation in InAs quantum dots
Creators: name: Alcalde, A. M.
name: Fanyao, Qu
name: Marques, G. E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have calculated spin relaxation rates in parabolic quantum dots due to the phonon modulation of the spin-orbit interaction in presence of an external magnetic field. Both, deformation potential and piezoelectric electron-phonon coupling mechanisms are included within the Pavlov-Firsov spin-phonon Hamiltonian. Our results have demonstrated that, in narrow gap materials, the electron-phonon deformation potential and piezoelectric coupling give comparable contributions as spin relaxation processes. For large dots, the deformation potential interaction becomes dominant. This behavior is not observed in wide or intermediate gap semiconductors, where the piezoelectric coupling, in general, governs the spin relaxation processes. We also have demonstrated that spin relaxation rates are particularly sensitive to the Landé $g$-factor.
description: 4 pages, 2 figures, to be appear in Physica E: Proceedings of the 11 International Conference on Narrow Gap Semiconductors
Additional file 8 of Spatial modelling of the infestation indices of Aedes aegypti: an innovative strategy for vector control actions in developing countries
Creators: name: Cavalcante, Ana Carolina Policarpo
name: Olinda, Ricardo Alves De
name: Gomes, Alexandrino
name: Traxler, John
name: Smith, Matt
name: Santos, Silvana
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences

description: Additional file 8: Figure S8. Moran scatterplots of the BI data, the LISA maps, and the Moran maps in 2015.
Testing the cosmological principle of isotropy: local power spectrum estimates of the WMAP data
Creators: name: Hansen, F. K.
name: Banday, A. J.
name: Gorski, K. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We apply the Gabor transform methodology proposed in (Hansen et al. 2002, 2003) to the WMAP data in order to test the statistical properties of the CMB fluctuation field and specifically to evaluate the fundamental assumption of cosmological isotropy. We estimate the angular power spectrum locally in discs of various sizes positioned in different directions. We determine whether the spatial position of a few outliers in the angular power spectrum could suggest the presence of residual foregrounds or systematic effects. For multipoles close to the first peak, the most deviant local estimates from the best fit WMAP model are associated with a few particular areas close to the Galactic plane. Such deviations also include the ``dent'' in the spectrum just shortward of the first peak which was remarked upon by the WMAP team. Estimating the angular power spectrum excluding these areas gives a slightly higher first Doppler peak amplitude. Finally, we probe the isotropy of the largest angular scales by estimating the power spectrum on hemispheres and reconfirm strong indications of a north-south asymmetry previously reported by other authors. We find tentative evidence for residual foregrounds in the range l=2-4, which could be associated with the low measured quadrupole amplitudes and other anomalies on these angular scales. However, over the range l=5-40 the observed asymmetry is much harder to explain in terms of residual foregrounds and known systematic effects. Such asymmetric distributions of power on the sky provide a serious test for the cosmological principle of isotropy.
description: Submitted to MNRAS
Preferences about Preferences: Uncovering the Forces That Generate EU Trade Preference Schemes
Creators: name: Connell, Brendan James
Publisher: name: American University
Year: 2023

description: National trade preference schemes are an integral component of North-South trade relations. Yet the varying degree of trade liberalization across different preference schemes is considerable, especially in the case of the EU. This thesis attempts to find what factors can account for the differing amount of trade liberalization between the EU's trade preference schemes. To do this, both process tracing and the congruence method are used to analyze two different instances of European trade and development policy--the EU's 2012 revision of GSP and the EU's Economic Partnership Agreement with the Caribbean. I find the liberalization of EU trade preferences is driven primarily by three factors: (1) Domestic commercial interests; (2) EU concerns about global economic competitiveness; and (3) Desires for WTO compatibility. I also find NGOs to represent the main opposition for the EU's current trade and development agenda rather than import-competing sectors as "conventional" trade theory would predict.
Preferences about Preferences: Uncovering the Forces That Generate EU Trade Preference Schemes
Creators: name: Connell, Brendan James
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: National trade preference schemes are an integral component of North-South trade relations. Yet the varying degree of trade liberalization across different preference schemes is considerable, especially in the case of the EU. This thesis attempts to find what factors can account for the differing amount of trade liberalization between the EU's trade preference schemes. To do this, both process tracing and the congruence method are used to analyze two different instances of European trade and development policy--the EU's 2012 revision of GSP and the EU's Economic Partnership Agreement with the Caribbean. I find the liberalization of EU trade preferences is driven primarily by three factors: (1) Domestic commercial interests; (2) EU concerns about global economic competitiveness; and (3) Desires for WTO compatibility. I also find NGOs to represent the main opposition for the EU's current trade and development agenda rather than import-competing sectors as "conventional" trade theory would predict.