cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Experimental Study of the Laser Diode Pumped Rubidium Maser
Creators: name: Michaud, Alain
name: Tremblay, Pierre
name: Tetu, Michel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We report the operation of a $^{87}$Rb maser in the self-oscillating mode, using a laser diode as the optical pumping source. The maser uses a TE$_{021}$ cavity surrounding a cell containing the atoms and 11 Torr of N$_{2}$ as the buffer gas. The optical pumping is accomplished by using a commercial laser diode frequency-locked on the linear absorption line of an external rubidium cell. The maser output power is maximized when the laser spectrum is spread by modulating its frequency through the variation of its injection current. The maser output power is also presented for various modulation waveforms and frequencies. We find that the spurious sidebands induced by the modulation can be minimized. Finally, the linear dependence between the laser and maser frequencies is shown. We find that the relative maser frequency pulling from the laser is about $4.6 \times 10^{-3}$.
Hubendickia cylindrica Brandt 1974
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Littorinimorpha
Hydrobiidae
Hubendickia
Hubendickia cylindrica

description: cylindrica, Hubendickia Brandt, 1974
 Hubendickia cylindrica Brandt, 1974: 96–97 (pl. 7, fig. 19).
Gastropoda, Pomatiopsidae
 Probable paratype: MZSP 95944 (Fig. 3 C–D).
 Locality: Thailand, Ubon Province, Mekong River at Bandan (type locality), 15 Feb. 1970.
 Preservation: Dry.
 Remarks: Former Jens Hemmen Collection. Given its compatible measurements, the specimen listed above is a possible remainder of a 100-specimen paratype lot from the above-mentioned locality, originally catalogued as SMRL 5099. According to Brandt (1974), these specimens were left under the care of the SMRL.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 20, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
Free play study using peters unsteady aerodynamics with applications to probabilistic modeling
Creators: name: Panchal, Jeet
Publisher: name: No Publisher Supplied
Year: 2020

description: In the last two decades, there has been an increasing interest in the field of nonlinear aeroelasticity. With substantial improvements in computing capabilities, the control surface free play problem is now being reinvestigated by many researchers with the goal of developing more advanced and accurate analytical models. Despite this field of research being well defined, numerous modeling approaches exist, yielding unique numerical predictions of the aeroelastic dynamical behavior and its associated properties. The literature shows many variabilities in the parameters that define free play, with the majority of the existing models being developed deterministically. In this thesis, different nonlinear aeroelastic systems with finite-state unsteady aerodynamics are investigated in the time domain. The results are then used to create a novel probabilistic framework to predict the likelihood of encountering aeroelastic instabilities.
Optimal Bioeconomic Management Strategies for Prevention and Control of Invasive Alien Species
Creators: name: Mehta, Shefali V.
name: Homans, Frances R.
name: Haight, Robert G.
name: Polasky, Stephen
name: Mehta, Shefali V.
name: Homans, Frances R.
name: Haight, Robert G.
name: Polasky, Stephen
Publisher: name: Unknown
Year: 2005
Subjects: Environmental Economics and Policy

description: Invasive species constitute a major economic and ecological threat. They produce billions of dollars in damages annually and are considered on of the top five factors causing the loss of biodiversity. Hence the prevention, control and elimination of invasive species are major objectives for government agencies. While ecological and biological research can identify effective treatment measures, the implementation of these methods is inevitably limited by fiscal constraints. Thus, ecological data needs to be incorporated into economic cost-minimization models to find the optimal balance of alternative approaches subject to budget limitations. We present a stochastic dynamic optimization model that analyzes the optimal choices for invasive species management: the optimal levels of search intensity to detect established species and the optimal degree of control of a detected species. The model illustrates how the optimal strategy for a single species depends on the interactions among three factors: the speed of the invasive species invasion, the distributions of random biological processes, and the specific parameters pertaining to that species.
description: Paper removed by author. Please see the current version, available online January 8, 2007: Mehta, S.V. et al. Optimal detection and control strategies for invasive species management. Ecological Economics (2007), doi:10.1016/j.ecolecon.2006.10.024
Multiple Particle Scattering in Quantum Point Contacts
Creators: name: Meidan, Dganit
name: Oreg, Yuval
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent experiments performed on weakly pinched quantum point contacts, have shown a resistance that tend to decrease at low source drain voltage. We show that enhanced Coulomb interactions, prompt by the presence of the point contact, may lead to anomalously large multiple-particle scattering at finite bias voltage. These processes tend to decrease at low voltage, and thus may account for the observed reduction of the resistance. We concentrate on the case of a normal point contact, and model it by a spinfull interacting Tomonaga-Luttinger liquid, with a single impurity, connected to non interacting leads. We find that sufficiently strong Coulomb interactions enhance two-electron scattering, so as these dominate the conductance. Our calculation shows that the effective charge, probed by the shot noise of such a system, approaches a value proportional to e* = 2e at sufficiently large backscattering current. This distinctive hallmark may be tested experimentally. We discuss possible applications of this model to experiments conducted on Hall bars.
description: 5 pages, 2 figures
Social Viability Roles of the Agricultural Sector in China
Creators: name: Weiming, Tian
name: Xiumei, Liu
name: Xia, Kang
name: Weiming, Tian
name: Xiumei, Liu
name: Xia, Kang
Publisher: name: Unknown
Year: 2004
Subjects: subject: Community/Rural/Urban Development
subject: Labor and Human Capital
subject: agricultural development
subject: China
subject: migration
subject: rural labor

description: This study assesses how the transfer of rural labor to non-farm sectors affects China's national economy and the role the agricultural sector plays with respect to rural-urban migration. Econometric models using official Chinese statistics are used to: evaluate the marginal productivities of rural labor in agriculture versus non-agriculture; identify determinants of rural labor transfer; and assess the socioeconomic impacts of these transfers. It is concluded that though agricultural growth stems problems relating to over-urbanization, there are significant economic costs and undesirable social consequences associated with under-urbanization. Gains brought about by flexibility in the transfer of rural labor to non rural labor include higher GDP and reduced discrepancies in living standards for rural and urban populations.
ПАХТАЧИЛИК СИЁСАТИНИ АМАЛГА ОШИРИШ СОҲАСИДА СОВЕТ ҲОКИМИЯТИНИНГ  МУТАХАССИСЛАРГА ЭЪТИБОРИ ВА УНИНГ МОҲИЯТИ
Creators: name: Расулова  Муҳайё Мирзамурот қизи
Publisher: name: Zenodo
Year: 2024

description: Аннотация: Совет даврида пахтачилик соҳаси учун махсус ўқув юртларини ташкил этиш масаласи давлат сиёсатининг муҳим йўналишларидан бири бўлган. 1920-йилларнинг бошларида Ўрта Осиёда, хусусан Ўзбекистонда, пахтачилик соҳаси учун малакали кадрлар тайёрлаш масаласи долзарб аҳамият касб этди.

Калит сўзлар:Совет,  Кенгаш,  Комиссар,  Туркистон, ирригация, агроном,  ирригатор, механизатор.
An Exact Solution for Static Scalar Fields Coupled to Gravity in $(2+1)$-Dimensions
Creators: name: Daghan, Durmus
name: Bilge, Ayse H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We obtain an exact solution for the Einstein's equations with cosmological constant coupled to a scalar, static particle in static, "spherically" symmetric background in 2+1 dimensions.
description: 9 pages. Replaced by a revised version
Assessing the Vulnerability of Agricultural Households to Macroeconomic Shocks: Evidence from Mexico
Creators: name: Rubio, Gloria M.
name: Soloaga, Isidro
name: Rubio, Gloria M.
name: Soloaga, Isidro
Publisher: name: Unknown
Year: 2004
Subjects: subject: Consumer/Household Economics
subject: Food Security and Poverty
subject: economic shocks
subject: household vulnerability
subject: Mexico
subject: rural poverty

description: This paper uses cross-sectional data from Mexico before and after the 1994 peso crisis to analyze rural household vulnerability to macroeconomic shocks. The study suggests that agricultural households are less vulnerable than non-agricultural households. The impacts vary depending on type of production and specialization level. Among agricultural households, those with a higher proportion of corn and bean production for self-consumption fared better than households which engaged in stronger market participation. Although the decline in their monetary income and consumption was more or less similar to that of the more market-oriented agricultural households, they were better able to shield their total income and consumption as well as their food expenditures.
Towering Rocky Slabs of Jamsola
Creators: name: Priyank Pravin Patel
name: Das, Sayantan
Publisher: name: Zenodo
Year: 2017
Subjects: Incised river, quartzite, homoclinal shifting

description: Just before it flows onto the coastal plains of Medinipur (West Bengal) and Balasore (Odisha), the Subarnarekha River suddenly becomes narrow and incised at Jamsola. Towering rocky slabs up to 25 m high occur on the banks. These steeply dipping quartzite slabs protrude through a thin veneer of deposits of the Quaternary Kasai Formation (G81, 1998). Here the channel preferentially occupies a strike fault (Perumal et aL, 1986), Which cuts across the steeply dipping and intensely foliated quartzite beds of the Chaibasa Formation of the Singhbhum Group. Geological processes eons ago have sheared the quartzite into numerous secondary foliations, along with folding and subsequent plunging of the beds towards north at angles of 50°-70°. Joints and silica veins traverse the rocky beds (Mazumder et al. 2012). The Subarnarekha River in this reach flows along the strike of the dipping quartzite beds (sec diagram). Such a strike-parallel stream cannot incise vertically in the dipping resistant lithologies but erodes the channel by shifting (or migrating) downdip. This process has been defined in the geomorphic literature as homoclinal (or monoclinal) shifting (Goudie, 2004). The Subarnarekha River at Jamsola represents a simple case of homoclinal shifting. Further, differential erosion along the prominent joints and bedding planes in these steeply dipping beds have created the jagged rocky surface at Jamsola.
Absence of Barren Plateaus in Quantum Convolutional Neural Networks
Creators: name: Pesah, Arthur
name: Cerezo, M.
name: Wang, Samson
name: Volkoff, Tyler
name: Sornborger, Andrew T.
name: Coles, Patrick J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Quantum neural networks (QNNs) have generated excitement around the possibility of efficiently analyzing quantum data. But this excitement has been tempered by the existence of exponentially vanishing gradients, known as barren plateau landscapes, for many QNN architectures. Recently, Quantum Convolutional Neural Networks (QCNNs) have been proposed, involving a sequence of convolutional and pooling layers that reduce the number of qubits while preserving information about relevant data features. In this work we rigorously analyze the gradient scaling for the parameters in the QCNN architecture. We find that the variance of the gradient vanishes no faster than polynomially, implying that QCNNs do not exhibit barren plateaus. This provides an analytical guarantee for the trainability of randomly initialized QCNNs, which highlights QCNNs as being trainable under random initialization unlike many other QNN architectures. To derive our results we introduce a novel graph-based method to analyze expectation values over Haar-distributed unitaries, which will likely be useful in other contexts. Finally, we perform numerical simulations to verify our analytical results.
description: 9 + 20 pages, 7 + 8 figures, 3 tables. Updated to published version
Conasprella damasomonteiroi Petuch & Myers 2014
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Conidae
Conasprella
Conasprella damasomonteiroi

description: damasomonteiroi, Jaspidiconus Petuch & Myers, 2014
 Jaspidiconus damasomonteiroi Petuch & Myers, 2014b: 35 (text fig. + fig. 3A–F).
Gastropoda, Conidae
 Holotype: MZSP 116528.
 Paratype: MZSP 116529.
 Locality: Brazil, Ceará State, off Camocim, 40 m depth.
 Preservation: Dry.
 Remarks: This species was recombined as Conasprella damasomonteiroi by Puillandre et al. (2015).
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 20, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
Agriculture, Environmental Services and Agro-Tourism in the Dominican Republic
Creators: name: Catalino, Alejandro Herrera
name: Lizardo, Magdalena
name: Catalino, Alejandro Herrera
name: Lizardo, Magdalena
Publisher: name: Unknown
Year: 2004
Subjects: subject: Environmental Economics and Policy
subject: Resource /Energy Economics and Policy
subject: agriculture
subject: Dominican Republic
subject: contingent valuation
subject: environment
subject: tourism

description: This paper analyzes the links between agriculture and tourism. A contingent valuation study assesses tourist's willingness to pay (WTP) for agro-tourism and agriculture's positive environmental services and related positive externalities. The paper analyzes factors influencing tourist preferences in the Dominican Republic (DR) -- tourist income, the local tourist destination, sex, and nationality stand out among these factors. Estimates are given for different WTP scenarios according to farming systems. The study argues that a well developed agro-tourism industry would result in a market mechanism generating additional income of US $251 to US $364 million annually. Agro-tourist activities would have the added benefit of promoting sustainable agricultural practices.
Fine Grid Numerical Solutions of Triangular Cavity Flow
Creators: name: Erturk, E.
name: Gokcol, O.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Numerical Analysis (math.NA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Numerical solutions of 2-D steady incompressible flow inside a triangular cavity are presented. For the purpose of comparing our results with several different triangular cavity studies with different triangle geometries, a general triangle mapped onto a computational domain is considered. The Navier-Stokes equations in general curvilinear coordinates in streamfunction and vorticity formulation are numerically solved. Using a very fine grid mesh, the triangular cavity flow is solved for high Reynolds numbers. The results are compared with the numerical solutions found in the literature and also with analytical solutions as well. Detailed results are presented.
Responding to Economic Shocks in Ghana: The Agricultural Sector as a Social Safety Net
Creators: name: Sarpong, Daniel Bruce
name: Asuming-Brempong, Samuel
name: Sarpong, Daniel Bruce
name: Asuming-Brempong, Samuel
Publisher: name: Unknown
Year: 2004
Subjects: subject: Community/Rural/Urban Development
subject: Food Security and Poverty
subject: Labor and Human Capital
subject: Ghana
subject: labor
subject: migration
subject: rural development
subject: safety nets

description: The objective of this paper is to document, assess and characterize the role Ghana's agriculture has played as a safety net when the urban labor market suffered economic shocks. The study explores how agriculture influences non-agricultural dependent households. Specific attention is given to the implicit value of the informal insurance role that rural households play in supporting family members who lose jobs acquired after migrating to urban areas. The paper analyses Ghanaian agriculture's social security role in the late 1980s and 1990s. This well documented period in Ghanaian economic literature, coincides with both natural and macro policy shocks and the policy measures taken to cope with the shocks.
title: Análise, descoberta, comunicação e participação – interseções da história e das práticas artísticas na formação de professores da Escola Superior de Educação de Lisboa
Creators: name: Ferreira, Joana Correia
name: Ferreira, Nuno
Publisher: name: Escola Superior de Educação, Instituto Politécnico de Lisboa
Year: 2021

description: O projeto intitulado Passado, presente e futuro surgiu na sequência da intervenção de um docente por ocasião da comemoração do dia da Escola Superior de Educação de Lisboa (ESELx), a 10 de dezembro de 2018, perante a sua comunidade escolar. Nessa intervenção, fez-se referência ao passado herdado pela atual instituição, na sua dimensão histórica da formação de professores, que conjuga alunos, professores e o próprio edifício da instituição. Esta intervenção suscitou o interesse particular de um grupo de estudantes, que o elegeu como tema para uma proposta de atividade na Unidade Curricular de Artes Plásticas II, assumindo assim a vontade de o comunicar e difundir.
Astraea danieli Alf & Kreipl 2006
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Malpighiales
Turbinidae
Astraea
Astraea danieli

description: danieli, Astraea Alf & Kreipl, 2006
 Astraea (Astralium) danieli Alf & Kreipl, 2006: 91 (figs 1–3).
Gastropoda, Turbinidae
 Paratype: MZSP 95919 (Fig. 1 A–B).
 Locality: Indonesia, Bali, Tanah Lot. In shallow water on rocks with algae, collected in 1978. Collectors: A. Alf and K. Krepl.
 Preservation: Dry.
 Remarks: One of the five paratypes deposited in Jens Hemmen’s Collection by Alf & Kreipl. This species was recombined as Astralium danieli by Alf & Kreipl (2011).
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 20, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
Inequalities for means of chords, with application to isoperimetric problems
Creators: name: Exner, Pavel
name: Harrell, Evans M.
name: Loss, Michael
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 51P05, 81V99, 78A30

description: We consider a pair of isoperimetric problems arising in physics. The first concerns a Schrödinger operator in $L^2(\mathbb{R}^2)$ with an attractive interaction supported on a closed curve $Γ$, formally given by $-Δ-αδ(x-Γ)$; we ask which curve of a given length maximizes the ground state energy. In the second problem we have a loop-shaped thread $Γ$ in $\mathbb{R}^3$, homogeneously charged but not conducting, and we ask about the (renormalized) potential-energy minimizer. Both problems reduce to purely geometric questions about inequalities for mean values of chords of $Γ$. We prove an isoperimetric theorem for $p$-means of chords of curves when $p \leq 2$, which implies in particular that the global extrema for the physical problems are always attained when $Γ$ is a circle. The article finishes with a discussion of the $p$--means of chords when $p > 2$.
description: LaTeX2e, 11 pages
Environmental Services, Externalities and Agriculture: The Case of Mountain Tourism in Morocco
Creators: name: Khalil, Allali
name: Khalil, Allali
Publisher: name: Unknown
Year: 2004
Subjects: subject: Environmental Economics and Policy
subject: Resource /Energy Economics and Policy
subject: agricultural landscape values
subject: hedonic valuation
subject: Morocco
subject: rural development

description: This study uses hedonic pricing techniques to estimate the value of agricultural amenities in Morocco's High Atlas Mountains. The analysis is limited to positive externalities related to land use, providing indicators to better inform policy decisions effecting rural and agricultural development. Advantages linked to landscape planning and its contribution to sustaining the tourism activity are documented. Amenities specific to mountain agriculture have a positive influence on the tourist accommodation rental market and particularly on farmhouses. These advantages include joint products linked to the farmhouses bordering cultivated areas, the scenery value of annual crops, the shade and attractiveness provided by walnut trees and the presence of domestic animals.
Benchmarking Parallelism in FaaS Platforms
Creators: name: Barcelona-Pons, Daniel
name: García-López, Pedro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Serverless computing has seen a myriad of work exploring its potential. Some systems tackle Function-as-a-Service (FaaS) properties on automatic elasticity and scale to run highly-parallel computing jobs. However, they focus on specific platforms and convey that their ideas can be extrapolated to any FaaS runtime. An important question arises: do all FaaS platforms fit parallel computations? In this paper, we argue that not all of them provide the necessary means to host highly-parallel applications. To validate our hypothesis, we create a comparative framework and categorize the architectures of four cloud FaaS offerings, emphasizing parallel performance. We attest and extend this description with an empirical experiment that consists in plotting in deep detail the evolution of a parallel computing job on each service. The analysis of our results evinces that FaaS is not inherently good for parallel computations and architectural differences across platforms are decisive to categorize their performance. A key insight is the importance of virtualization technologies and the scheduling approach of FaaS platforms. Parallelism improves with lighter virtualization and proactive scheduling due to finer resource allocation and faster elasticity. This causes some platforms like AWS and IBM to perform well for highly-parallel computations, while others such as Azure present difficulties to achieve the required parallelism degree. Consequently, the information in this paper becomes of special interest to help users choose the most adequate infrastructure for their parallel applications.
description: 19 pages, 15 figures, submitted to FGCS, revised
Embryonic Pattern Scaling Achieved by Oppositely Directed Morphogen Gradients
Creators: name: McHale, Peter
name: Rappel, Wouter-Jan
name: Levine, Herbert
Publisher: name: arXiv
Year: 2006
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: FOS: Biological sciences

description: Morphogens are proteins, often produced in a localised region, whose concentrations spatially demarcate regions of differing gene expression in developing embryos. The boundaries of expression must be set accurately and in proportion to the size of the one-dimensional developing field; this cannot be accomplished by a single gradient. Here, we show how a pair of morphogens produced at opposite ends of a developing field can solve the pattern-scaling problem. In the most promising scenario, the morphogens effectively interact according to the annihilation reaction $A+B\to\emptyset$ and the switch occurs according to the absolute concentration of $A$ or $B$. In this case embryonic markers across the entire developing field scale approximately with system size; this cannot be achieved with a pair of non-interacting gradients that combinatorially regulate downstream genes. This scaling occurs in a window of developing-field sizes centred at a few times the morphogen decay length.
description: 24 pages; 11 figures; uses iopart
The Food Security Role of Agriculture in Ethiopia
Creators: name: Adenew, Berhanu
name: Adenew, Berhanu
Publisher: name: Unknown
Year: 2004
Subjects: subject: Food Security and Poverty
subject: Ethiopia
subject: food insecurity
subject: rural development
subject: rural poverty

description: This study analyses income, expenditure and food consumption data in Ethiopia to help explains the country's high probability of national food consumption shortfalls. The study argues that to reach the goal of increased national food security, it is necessary to improve market functioning, invest in infrastructure which reduces food transaction costs, provide incentives for increased production through strong support for producers, and, most importantly of all, reform current land tenure arrangements.
Poverty and Agricultural Growth: Chile in the 1990s
Creators: name: Lopez, Ramon E.
name: Anriquez, Gustavo
name: Lopez, Ramon E.
name: Anriquez, Gustavo
Publisher: name: Unknown
Year: 2004
Subjects: subject: Community/Rural/Urban Development
subject: Food Security and Poverty
subject: agricultural growth
subject: Chile
subject: poverty
subject: rural development

description: This paper analyzes the roles of agriculture in reducing poverty. Following the methodology proposed by Lopez (2002), three channels by which agricultural growth reduces poverty are tested: (i) its effects on the real wage of unskilled workers (and/or its possible effect in reducing their unemployment); (ii) the direct impact of agricultural growth on the income of poor farmers; and, (iii) the effect on real food prices. The paper concludes that the pro-poor role of agricultural expansion is dramatic. Agricultural growth tends to improve all measures of poverty significantly with head count falling around 7.3% as a consequence of a 4.5% increase in agricultural output. An important result is that while the economy-wide effects taking place via food prices and especially the labour market are quantitatively important the direct income effects on farmers are almost negligible.
Boß, Gerhard: Ökumene - Fragen und Antworten
Creators: name: Motel, Hans-Beat
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 20 Nr. 1 (1971): Ökumenische Rundschau, Band 20, Heft 1
HORTICULTURAL RESEARCH IN THE NETHERLANDS: CHANGES AND CHALLENGES FOR 2010
Creators: name: Van Oosten, H.J.
name: Van Oosten, H.J.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: foresight
subject: research policy
subject: strategy development
subject: horticulture
subject: Netherlands

description: Major shifts in world economy, society and technology will cause dramatic changes in Dutch horticulture and in the attitude of the government towards research. The horticulture industry will change from a production-driven to a customer-driven strategy while developing market-oriented product chains. More than ever, knowledge becomes a critical factor in competition. In contrast with the past, the horticulture industry will protect knowledge to increase its profitability. The government will choose to focus on basic sciences, leaving applied research mainly to the industry. This is a major shift since the government used to be responsible for most research. Complete institutional research programmes are no longer state-financed; instead, a system of financing research programmes by competitive bids is being developed. The government is also restructuring the infrastructure of agricultural research. Breakthroughs in science and technology will have strong effects on how the industry will develop. The more important ones are described. In the future, research institutes will act in a competitive environment with great uncertainties. The knowledge market used to be dominated by governments, but will be dominated by internationally active private enterprises. Both management and researchers will take more customer-oriented attitudes. Research institutes will need to develop strategies to survive under these circumstances. Some possibilities are discussed. It is concluded that horticultural research will change. Instead of focusing on plant production, it will include many more disciplines and multi-disciplinary collaboration in agreement to the information flow in product chains. The horticulture industry will have to decide whether separate horticultural stations for applied research should remain and what kind of work must be done in the future.
Magnetic behavior of a spin-1 dimer: model system for homodinuclear nickel (II) complexes
Creators: name: Strecka, J.
name: Jascur, M.
name: Hagiwara, M.
name: Narumi, Y.
name: Kuchar, J.
name: Kimura, S.
name: Kindo, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetic behavior of a spin-1 Heisenberg dimer is analysed in dependence on both uniaxial single-ion anisotropy and XXZ exchange anisotropy in a zero- as well as non-zero longitudinal magnetic field. A complete set of eigenfunctions and eigenvalues of the total Hamiltonian is presented together with an exact analytical expression for the Gibbs free energy, longitudinal magnetization, longitudinal and transverse susceptibility. The obtained theoretical results are compared with the relevant experimental data of [Ni2(Medpt)2(ox)(H2O)2](ClO4)2.2H2O (Medpt = methyl-bis(3-aminopropyl)amine).
description: 20 pages, 7 figures
The chromatic polynomial of fatgraphs and its categorification
Creators: name: Loebl, Martin
name: Moffatt, Iain
Publisher: name: arXiv
Year: 2005
Subjects: subject: Combinatorics (math.CO)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 05C10, 57M15

description: Motivated by Khovanov homology and relations between the Jones polynomial and graph polynomials, we construct a homology theory for embedded graphs from which the chromatic polynomial can be recovered as the Euler characteristic. For plane graphs, we show that our chromatic homology can be recovered from the Khovanov homology of an associated link. We apply this connection with Khovanov homology to show that the torsion-free part of our chromatic homology is independent of the choice of planar embedding of a graph. We extend our construction and categorify the Bollobas-Riordan polynomial (a generalisation of the Tutte polynomial to embedded graphs). We prove that both our chromatic homology and the Khovanov homology of an associated link can be recovered from this categorification.
description: A substantial revision. To appear in Advances in Mathematics
Additional file 2 of A genomic perspective of the aging human and mouse lung with a focus on immune response and cellular senescence
Creators: name: He, Meng
name: Borlak, Jürgen
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Supplementary Table S1. Detailed information of 89 individual mouse genome data sets. Supplementary Table S2. Sample characteristics of human genomic data sets. Supplementary Table S3. Gene set enrichment analysis of the mouse genomic data. Supplementary Table S4. Linear regression model defined 77 up- and 13 down-regulated genes whose expression changed with age. Supplementary Table S5. Regulation of ECM coding genes in mice. Supplementary Table S6. Commonly regulated DEGs between the human test and validation set. Supplementary Table S7. 798 housekeeping genes in mice which do not change their expression with age. Supplementary Table S8. Inferred compositional changes of ECM in the lung of mice. Supplementary Table S9. Genes of the senescence-associated secretory phenotype. Supplementary Table S10. We compared the age-dependent gene expression changes of the present study to published findings. Supplementary Table S11. Data retrieval to define marker gene sets for different cells of the lung. Supplementary Table S12. List of individual marker gene sets.Supplementary Table S13. ssGSEA enrichment score for different mouse and human pulmonary cells. Supplementary Table S14. Commonly regulated DEGs between human and mouse pulmonary genomes.
The Economic Impact of a Possible Irrigation-Water Shortage in Odessa Sub-Basin: Potato Production and Processing
Creators: name: Bhattacharjee, Sanjoy
name: Holland, David W.
name: Bhattacharjee, Sanjoy
name: Holland, David W.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Production Economics
subject: Resource /Energy Economics and Policy
subject: potato production
subject: potato processing
subject: regional economic impact
subject: input-output models

description: The Columbia Basin Project (CBP) was one of the single largest projects undertaken by the Bureau of Reclamation. The venture, which started in the 1930s in Central Washington, did not entirely turn out as expected. In fact, almost half of the proposed irrigable area, located mainly in the northeastern portion of the original plan, doesn't have any water supply from the project for irrigation purposes. The Odessa Sub-area is one of those areas. The land in this area is fertile and produces very high quality potatoes. Over the last couple of decades, potato production in this Odessa sub-region has been possible primarily because of irrigation based on deep wells. However, the underground water is drawing down and potato production may shut down as a result. Therefore, an economic threat on the economy of the Columbia Basin is in the offing, unless alternative water sources are negotiated. In this paper, we will mainly explore the regional economic impacts of the possible losses of potato production and its associated processing in the Odessa Sub-area. In section A, we briefly discuss the current status of the Columbia Basin Project. In section B, we discuss ground water level decline issues. In section C, we enumerate the economic impacts of the possible losses in potato production in the Odessa Sub-area and associated loss of potato processing. Summary and conclusions are in the final section.
Liability, Regulation and Endogenous Risk: Incidence and Severity of Escaped Prescribed Fires in the United States
Creators: name: Yoder, Jonathan K.
name: Yoder, Jonathan K.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Resource /Energy Economics and Policy
subject: endogenous risk
subject: prescribed fire economics
subject: liability law

description: Prescribed fire is a useful but risky method for reducing general wildfire risk and improving wildlife habitat, biodiversity, timber growth, and agricultural forage. In the past the fifteen years, laws is some states have been adopted to support the use of prescribed fire. This article examines the effect of liability law and common regulations on the incidence and severity of escaped prescribed fires in the United States from 1970 to 2002. Regression results show that stringent statutory liability law and regulation tends to reduce the number and severity of escaped prescribed fires on private land, but not on federal land where state liability law does not directly apply.
Electron correlations in cubic paramagnetic perovskite Sr(V,Mn)O$_{3}$ -- Results from fully self-consistent self-energy embedding calculations
Creators: name: Yeh, Chia-Nan
name: Iskakov, Sergei
name: Zgid, Dominika
name: Gull, Emanuel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work, we use the thermodynamically consistent and conserving self-energy embedding theory (SEET) to study the spectra of the prototypical undistorted cubic perovskites SrVO$_3$ and SrMnO$_3$. In the strongly correlated metallic SrVO$_3$ we find that the usual attribution of the satellite peaks at -1.8eV to Hund or Hubbard physics in the $t_{2g}$ orbitals is inconsistent with our calculations. In the strongly correlated insulator SrMnO$_3$ we recover insulating behavior due to a feedback effect between the strongly correlated orbitals and the weakly correlated environment. Our calculation shows a systematic convergence of spectral features as the space of strongly correlated orbitals is enlarged, paving the way to a systematic parameter free study of correlated perovskites.
description: 13 pages, 13 figures, 2 tables
Few distance sets in $\ell_p$ spaces and $\ell_p$ product spaces
Creators: name: Chen, Richard
name: Gui, Feng
name: Tang, Jason
name: Xiong, Nathan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Kusner asked if $n+1$ points is the maximum number of points in $\mathbb{R}^n$ such that the $\ell_p$ distance $(1
description: 16 pages; fixed minor issue in proof of Theorem 3
Rates of revegetation of gullies in coastal British Columbia : implications for sediment production
Creators: name: Pellerin, Diane
Publisher: name: University of British Columbia
Year: 2009

description: Steep forested terrain in coastal British Columbia is typically dissected by V-shaped debris flow channels, or gullies. These steep, unstable slopes are important sources of sediment. Debris flows scour gully sidewalls, strip vegetation cover and leave mineral soils vulnerable to erosion. Accelerated sediment production persists for several years following a debris flow. However, little is known about the time frame for gully sidewall re-stabilisation or the associated decline in sediment production over time. The objectives of this study were to compare rates of revegetation between logged and unlogged gullies, to estimate fine sediment discharge from gully sidewalls at different stages of vegetation recovery, and to examine the role of environmental factors in determining plant succession and fine sediment production. Eleven gullies were studied in the coastal western hemlock forest of Coquitlam basin, southwestern Coast Mountains. Vegetation quadrats were established at 92 sites and sediment yield was monitored at 18 of the sites for one year. Community analysis suggests that land management influences the availability of colonising species and gully light regimes. Consequently, logged and unlogged gullies show different community associations and vegetation recovery rates. Six years after a disturbance, vegetation cover was significantly lower on unlogged compared to logged sidewalls (58% and 78%, respectively). After 19 years vegetation cover was similar in both environments (111% and 114%, respectively). The logged environment was dominated by shrubs such as Rubus parviflorus and Thuja plicata, and likely will become a Thuja plicata community. Initially, the unlogged environment was dominated by ferns and forbs; however, 19 years later it showed signs of future dominance by Thuja plicata. Results suggest that debris flow disturbance in gullies promotes higher regional plant species diversity. Sediment yield declined over time in most gullies following revegetation. Sediment yields varied between 0.1 to 72 m /ha/yr in logged gullies, and 0.3 to 24 m /ha/yr in unlogged gullies. Sediment yields showed a similar rate of decline in both environments over time. Results indicate that plant cover on gully sidewalls accounted for most of the variation in sediment yield. Other variables such as percent bare soil, slope angle and adjacent vegetation stands (which intercept rainfall reducing rainsplash erosion) were also important determinants of sediment yield. Consequently, by determining composition of adjacent stands, land management significantly influences sediment yield from gully sidewalls.
SOME PROCEDURES FOR ESTIMATING GOODS AND SERVICE TRADE BETWEEN REGIONS USING THE TRADE REPORTS FROM IMPLAN
Creators: name: Holland, David W.
name: Pirnique, Frank
name: Holland, David W.
name: Pirnique, Frank
Publisher: name: Unknown
Year: 2000
Subjects: subject: Community/Rural/Urban Development
subject: inter-regional trade
subject: IMPLAN

description: In empirical models like inter-regional input-output models and inter-regional computable general equilibrium models it is essential to know the economic linkage between regions in the form of inter-regional trade and factor flows. This report describes several approaches to estimating inter-regional trade using the information produced in the IMPLAN Commodity Trade Report and the Commodity Summary Report. In other words, it is assumed that the counties in both the core and periphery regions have been identified and regional input-output accounts for each region have been constructed using IMPLAN Pro 2.O. The calculation procedure for each approach is illustrated with an empirical example.
DOES CONSISTENT AGGREGATION REALLY MATTER?
Creators: name: Shumway, C. Richard
name: Davis, George C.
name: Shumway, C. Richard
name: Davis, George C.
Publisher: name: Unknown
Year: 2000
Subjects: Research Methods/ Statistical Methods

description: Consistent aggregation assures that behavioral properties, which apply to disaggregate relationships also, apply to aggregate relationships. The agricultural economics literature is reviewed which has tested for consistent aggregation or measured statistical bias and/or inferential errors due to aggregation. Tests for aggregation bias and errors of inference are conducted using indices previously tested for consistent aggregation. Failure to reject consistent aggregation in a partition did not entirely mitigate erroneous inference due to aggregation. However, inferential errors due to aggregation were small relative to errors due to incorrect functional form or failure to account for time series properties of data.
A thorough study of the performance of simulated annealing with geometric cooling in correlated and long tailed spatial scenarios
Creators: name: da Silva, Roberto
name: Filho, Eliseu Venites
name: Alves, Alexandre
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Metaheuristics, as the simulated annealing used in the optimization of disordered systems, goes beyond physics, and the traveling salesman is a paradigmatic NP-complete problem that allows inferring important theoretical properties of the algorithm in different random environments. Many versions of the algorithm are explored in the literature, but so far the effects of the statistical distribution of the coordinates of the cities on the performance of the algorithm have been neglected. We propose a simple way to explore this aspect by analyzing the performance of a standard version of the simulated annealing (geometric cooling) in correlated systems with a simple and useful method based on a linear combination of independent random variables. Our results suggest that performance depends on the shape of the statistical distribution of the coordinates but not necessarily on its variance corroborated by the cases of uniform and normal distributions. On the other hand, a study with different power laws (different decay exponents) for the coordinates always produces different performances. We show that the performance of the simulated annealing, even in its best version, is not improved when the distribution of the coordinates does not have the first moment. However, surprisingly, we still observe improvements in situations where the second moment is not defined but not where the first one is not defined. Finite-size scaling fits, and universal laws support all of our results. In addition, our study show when the cost must be scaled.
description: 23 pages, 12 figures, 2 tables
Habeas data Simone 2013
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Architaenioglossa
Diplommatinidae
Habeas
Habeas data

description: data, Habeas Simone, 2013
 Habeas data Simone, 2013b: 520–522 (figs 7–10, 16, 18).
Gastropoda, Diplommatinidae
 Holotype: MZSP 106810.
 Paratypes 1 (2 spc): MZSP 106814.
 Paratype 2: MZSP 109965.
 Paratype 3: MZSP 110159.
 Localities: Brazil, Bahia, Carinhanha, Serra do Ramalho, ~ 400 m elevation, sta. LES2301, Gruna do Cesário, 13°31'06.1" S, 43°38'26.2" W, 11 Sep. 2008; 1) sta. LES2300, Gruna Vila Nova, 13°33'14.3'' S, 43°52'40.7" W; 2) sta. LES2304, 12 Sep. 2008; 3) 12 Sep. 2008.
 Collector: M.E. Bichuette.
 Preservation: Dry.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 20, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
Light charged fermions in quantum gravity
Creators: name: de Brito, Gustavo P.
name: Eichhorn, Astrid
name: Schiffer, Marc
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the impact of quantum gravity on a system of chiral fermions that are charged under an Abelian gauge group. Under the impact of quantum gravity, a finite value of the gauge coupling could be generated and in turn drive four-fermion interactions to criticality. We find indications that the gravity-gauge-fermion interplay protects the lightness of fermions for a large enough number of fermions. On the other hand, for a smaller number of fermions, chiral symmetry may be broken, which would be in tension with the observation of light fermions.
description: 12 pages, 6 figures. Match the published version
Decay of massless Dirac field around the Born-Infeld Black Hole
Creators: name: Fernando, Sharmanthie
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we investigate the perturbations by a massless Dirac spinor of a Born-Infeld black hole. The decay rates of the spinor field which is given by the quasinormal mode frequencies are computed using the sixth order WKB approximation. The behavior of the quasi normal modes with the non-linear parameter, temperature and charge of the black hole are analyzed in detail. We also compare the decay rates of the Born-Infeld black hole with its linear counter-part Reissner-Nordstrom black hole.
description: Latex, 11 figures, references added, new data and new graphs added