cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
56 Organizações Rurais & Agroindustriais, Lavras, v. 14, n. 3, p. 356-366, 2012 AVALIAÇÃO DA CAFEICULTURA PELA ABORDAGEM DO CUSTEIO VARIÁVEL EM PROPRIEDADES NAS PRINCIPAIS REGIÕES PRODUTORAS DO BRASIL
Creators: name: Andrade, Fabricio Teixeira De
name: Castro Junior, Luiz Gonzaga De
name: Costa, Cassio Henrique Garcia
name: Andrade, Fabricio Teixeira De
name: Castro Junior, Luiz Gonzaga De
name: Costa, Cassio Henrique Garcia
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Operational costs
subject: ponto de equilíbrio
subject: margem de contribuição
subject: cafeicultura.

description: Estimaram-se, neste estudo, os custos operacionais de produção e a margem de contribuição real e potencial proveniente da cafeicultura em cidades nos estados de Minas Gerais, Paraná, Espírito Santo e São Paulo, principais regiões produtoras do Brasil. Além disso, buscou-se inferir o ponto equilíbrio da atividade, produção na qual os custos operacionais totais se igualam à receita total. Os dados foram levantados em: Três Pontas, Santa Rita do Sapucaí, Patrocínio e Manhumirim no estado de Minas Gerais; Jaguaré e Iúna, no Espírito Santo; Altinópolis, em São Paulo e Ribeirão do Pinhal, no estado do Paraná. Em relação à margem de contribuição, os resultados indicam que as produtividades potenciais a aumentam consideravelmente. O aumento do ponto de equilíbrio (sacas por hectare), em decorrência da elevação dos custos operacionais, para a consecução da produtividade potencial é compensado pelo aumento significativo no número de sacas produzidas, o que reduz de forma consistente os custos operacionais unitários. Pode-se concluir que a cafeicultura apresenta ganhos com o aumento da produtividade.
Preparation of a mesoporous silica quorum quenching medium for wastewater treatment using a membrane bioreactor
Creators: name: Kibaek Lee
name: Choo, Kwang-Ho
name: How Yong Ng
name: Chung-Hak Lee
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Various quorum quenching (QQ) media have been developed to mitigate membrane biofouling in a membrane bioreactor (MBR). However, most are expensive, unstable and easily trapped in hollow fibre membranes. Here, a sol-gel method was used to develop a mesoporous silica medium entrapping a QQ bacterial strain (Rhodococcus sp. BH4). The new silica QQ medium was able to remove quorum sensing signalling molecules via both adsorption (owing to their mesoporous hydrophobic structure) and decomposition with an enzyme (lactonase), preventing MBR biofouling without affecting the water quality. It also demonstrated a relatively long life span due to its non-biodegradability and its relatively small particle size (<1.0 mm), which makes it less likely to clog in a hollow fibre membrane module.
Testing quantum superpositions of the gravitational field with Bose-Einstein condensates
Creators: name: Lindner, Netanel H.
name: Peres, Asher
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the gravity field of a Bose-Einstein condensate in a quantum superposition. The gravity field then is also in a quantum superposition which is in principle observable. Hence we have ``quantum gravity'' far away from the so-called Planck scale.
Cooper pair trajectories in superconducting slab at self-field conditions
Creators: name: Talantsev, E. F.
name: Mataira, R. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Dissipative-free electric current flow is one of the most fascinating and practically important property of superconductors. Theoretical consideration of the charge carriers flow in infinitely long rectangular slab of superconductor in the absence of external magnetic field (so called, self-field) is based on an assumption that the charge carriers have rectilinear trajectories in the direction of the current flow whereas the current density and magnetic flux density are decaying towards superconducting slab with London penetration depth as characteristic length. Here, we calculate charge particle trajectories (as single electron/hole, as Cooper pair) at self-field conditions and find that charge carriers do not follow intuitive rectilinear trajectories along the slab surface, but instead ones have meander shape trajectories which cross the whole thickness of the slab. Moreover, if the particle velocity is below some value, the charge moves in opposite direction to nominal current flow. This disturbance of the canonical magnetic flux density distribution and backward movement of Cooper pairs can be entire mechanism for power dissipation in superconductors.
description: 11 pages, 6 figures
COORDENAÇÃO E QUALIDADE NO SISTEMA FAIRTRADE: O EXEMPLO DO CAFÉ
Creators: name: Miranda, Bruno Varella
name: Saes, Maria Sylvia Macchione
name: Miranda, Bruno Varella
name: Saes, Maria Sylvia Macchione
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: certificação
subject: comércio justo
subject: teoria dos custos de mensuração.

description: O excesso de oferta no mercado de café Fairtrade impede a comercialização de toda a produção certificada pelo preço mínimo estabelecido pela Fairtrade Labelling Organizations (FLO). Surge, então, a necessidade de compreensão dos fatores que determinam a plena inserção das cooperativas de cafeicultores familiares no comércio justo. No presente trabalho, argumenta-se que a qualidade do café, atributo não diretamente mensurado pelo selo Fairtrade, é fundamental para garantir o êxito nesse mercado. Afirma-se, assim, que os cafeicultores e compradores participantes do comércio justo têm a capacidade de reorganizar o mercado certificado sem que, para isso, tenham que influenciar a transformação das suas regras formais. Para explicar essa realidade, este trabalho apresenta hipóteses específicas para o estudo dos sistemas de certificação, inspiradas na teoria dos custos de mensuração. Oferece, portanto, não apenas uma interpretação alternativa para o funcionamento do sistema Fairtrade, mas também fornece ferramentas para a análise de outros sistemas de certificação.
A REDE DE ECONOMIA SOLIDÁRIA DO ALGODÃO AGROECOLÓGICO: DESENVOLVIMENTO HUMANO, SUSTENTABILIDADE E COOPERAÇÃO ENTRE OS PRODUTORES RURAIS DO ESTADO DO CEARÁ
Creators: name: Faria, Maria Vilma Coelho Moreira
name: Pereira, Josiane De Andrade
name: Faria, Maria Vilma Coelho Moreira
name: Pereira, Josiane De Andrade
Publisher: name: Unknown
Year: 2012
Subjects: subject: Community/Rural/Urban Development
subject: Economia solidária
subject: algodão agroecológico
subject: cooperação
subject: desenvolvimento humano
subject: sustentabilidade.

description: A economia solidária, enquanto forma de reorganização social de várias esferas da ação humana, tem se expandido notavelmente nas últimas décadas e assumido várias formas e configurações. Objetivou-se, neste artigo, principalmente, analisar a influência de três dimensões da economia solidária: cooperação, desenvolvimento humano e sustentabilidade, entre produtores rurais que integram a chamada “Justa Trama” - Rede Solidária do Algodão Agroecológico–. Essa rede atua desde a produção do algodão até a confecção e comercialização das roupas e acessórios. O estudo caracteriza-se como qualitativo. A coleta de dados foi realizada por meio de entrevistas semiestruturadas aplicadas a diversos informantes-chave e a vinte e cinco agricultores. Os entrevistados atuam na primeira etapa de produção do algodão agroecológico no estado do Ceará. Os dados coletados revelaram que as dimensões estudadas, apesar de serem articuladas e compreendidas de forma incipiente pelos trabalhadores rurais, fazem parte das suas práticas cotidianas. A inserção dos produtores rurais no contexto dessa rede tem trazido vários benefícios para os agricultores, como o aumento da renda e consciência ambiental, e incentivado a solidariedade e cooperação mútua.
Rigidity of singular Schubert varieties in Gr(m,n)
Creators: name: Hong, Jaehyun
Publisher: name: arXiv
Year: 2004
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 14C25 (Primary} 14M15 (secondary)

description: Let a=(p_1^{q_1}, ..., p_r^{q_r}) be a partition and a'=({p_1'}^{q_1'}, >..., {p_r'}^{q_r'}) be its conjugate. We will prove that if q_i, q_i > 1 for all i, then any irreducible subvariety X of Gr(m,n) whose homology class is an integral multiple of the Schubert class [σ_a] of type a is a Schubert variety of type a.
description: 21 pages
title: Venous thrombosis and women's health: Identification of risk factors and long terms effects
Creators: name: McColl, Mark D.
Publisher: name: University of Glasgow
Year: 1999
Subjects: subject: Physiology.

description: Venous thromboembolism (VTE) remains an important cause of morbidity and mortality, with well-recognised inherited and acquired risk factors. Women are particularly at risk of this condition because of pregnancy, the use of combined oral contraceptive pills, and hormone replacement therapy. A number of long-term sequelae may occur following an episode of VTE in women, such as development of the post- thrombotic syndrome, restriction of future contraceptive choice, bleeding events related to anticoagulants, and recurrence of thrombosis. In recent years there has been a marked increase in our understanding of genetic risk factors important for the development of VTE, and of their interaction with acquired risks. In particular, the description of the factor V Leiden and (more recently) prothrombin 202 lOA mutations have highlighted common genetic variations that are associated with a modest increased risk of thromboembolism. These genetic mutations may also be associated with other conditions that are associated with coagulation activation, such as preeclampsia. Thrombophilia is a rapidly expanding and complex field, and undoubtedly new abnormalities will be described within the next few years.
title: Recommender systems in the domain of early-stage enterprise investment : investment decision-making & venture valuation
Creators: name: Ohrfandl, Christian
name: Luef, Johannes
Publisher: name: TU Wien
Year: 2018
Subjects: subject: recommender
subject: investing
subject: recommender
subject: investing

description: The main objective of this thesis consists of the design of a recommender system, representing a novel method concerning the computational recommendation of early-stage enterprises to investors. In order to quantify decision rules the recommender system is based on, investors requirements and behaviours need to be analysed utilizing qualitative- and quantitative research. Furthermore, demonstrating the behaviour of the proposed recommendation algorithms is a major task of this thesis. For this reason, a prototype of the recommender system is being crafted in software. Due to the fact that the usability of the recommendation systems user interface plays a key role in terms of recommendation quality, a usability- and recommendation quality review of the prototype is being conducted in the course of empirical research. Based on the results of the Investment Decision-making & Venture Valuation specialization topic, it can be concluded that the most important characteristics investors base their investment decisions on, are stated as the quality, size and composition of the management team, product- & public interest and the industry / market sector of an early-stage enterprise. Furthermore, the venture valuation methods most utilized by investors, most meaningful in terms of valuation quality in the context of early-stage enterprises and most beneficial when utilized in a recommendation system, are stated as the scorecard- and berkus methods. Finally, investors requirements among the functionality of a recommender system in the domain of early-stage enterprise investment may be concluded as the construction of an investor profle. The shared chapter 3 Recommender Systems for Early-Stage Enterprise Investment addresses the conceptualization of a recommendation system in the domain of early-stage enterprise investment based on the findings of co-author Christian Ohrfandls specialization topic Investment Decision-making & Venture Valuation. The resulting recommender system includes various types of recommenders in a parallelized approach, that is, Collaborative filtering, content-based-, knowledge-based-, social- and hybrid recommendation algorithms. Additionally, the conceptual model of this recommender system has been implemented as a highly scalable, plugin-based software prototype that may be easily extended by different recommendation algorithms in future work. The most important opportunity for future research is stated as qualitative- or quantitative evaluations of recommendation quality in terms of user satisfaction. These evaluations may answer the question, whether the implemented design decisions improve a users utility when using the system. In fact, it is precisely this very evaluation that is being researched by co-author Johannes Luef in the course of the specialization topic User-centred Evaluation.
Joint distribution of multiple boundary local times and related first-passage time problems with multiple targets
Creators: name: Grebenkov, Denis S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We investigate the statistics of encounters of a diffusing particle with different subsets of the boundary of a confining domain. The encounters with each subset are characterized by the boundary local time on that subset. We extend a recently proposed approach to express the joint probability density of the particle position and of its multiple boundary local times via a multi-dimensional Laplace transform of the conventional propagator satisfying the diffusion equation with mixed Robin boundary conditions. In the particular cases of an interval, a circular annulus and a spherical shell, this representation can be explicitly inverted to access the statistics of two boundary local times. We provide the exact solutions and their probabilistic interpretation for the case of an interval and sketch their derivation for two other cases. We also obtain the distributions of various associated first-passage times and discuss their applications.
CONVENÇÕES, CAPITAL SOCIAL E DESENVOLVIMENTO EFETIVO NA AGRICULTURA FAMILIAR: O CASO DE MATO GROSSO DO SUL
Creators: name: Tomas, Robson Nogueira
name: Sproesser, Renato Luiz
name: Batalha, Mario Otavio
name: Tomas, Robson Nogueira
name: Sproesser, Renato Luiz
name: Batalha, Mario Otavio
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Agricultura familiar
subject: reforma agrária
subject: renda
subject: capital social
subject: convenções.

description: Objetivou-se, nesta pesquisa, analisar a importância das convenções e do capital social no desenvolvimento da agricultura familiar, especificamente no estado de Mato Grosso do Sul. Para tanto, selecionou-se uma amostra formada por sete assentamentos rurais, uma gleba agrária e uma colônia de produtores orgânicos, compondo um estudo de casos múltiplos. Os resultados evidenciaram que existe um baixo padrão de desenvolvimento econômico e social em parte dos assentamentos rurais localizados nesse estado. Entretanto, verificou-se que a Gleba Santa Terezinha – considerada aqui como um caso de sucesso para a agricultura de base familiar – possui uma realidade distinta dos assentamentos, ou seja, os produtores não estão endividados, contam com uma infraestrutura produtiva, operante e rentável, capaz de gerar renda suficiente para satisfazer suas necessidades e permitir um bom padrão de vida. Nessa direção, usou-se a comparação entre os casos para entender como e por que as convenções e o capital social são importantes para o desenvolvimento efetivo da agricultura familiar. Como conclusão, este artigo propõe um modelo conceitual-empírico que incide em um conjunto de relações econômicas e sociais essenciais para a inserção sustentável dos agricultores familiares nos mercados locais e na sociedade com um todo.
On the formation and recurrent shedding of ligaments in droplet aerobreakup
Creators: name: Dorschner, Benedikt
name: Biasiori-Poulanges, Luc
name: Schmidmayer, Kevin
name: El-Rabii, Hazem
name: Colonius, Tim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The breakup of water droplets when exposed to high-speed gas flows is investigated using both high-magnification shadowgraphy experiments as well as fully three-dimensional numerical simulations, which account for viscous as well as capillary effects. After thorough validation of the simulations with respect to the experiments, we elucidate the ligament formation process and the effect of surface tension. By Fourier decomposition of the flow field, we observe the development of specific azimuthal modes, which destabilize the liquid sheet surrounding the droplet. Eventually, the liquid sheet is ruptured, which leads to the formation of ligaments. We further observe the ligament formation and shedding to be a recurrent process. While the first ligament shedding weakly depends on the Weber number, subsequent shedding processes seem to be driven primarily by inertia and the vortex shedding in the wake of the deformed droplet.
Polarization statistical properties of the emission from the single mode Vertical-Cavity Surface-Emitting Lasers with the equally living laser levels
Creators: name: Golubev, Yu. M.
name: Golubeva, T. Yu.
name: Giacobino, E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The full quantum-statistical theory of the Vertical-Cavity Surface-Emitting Laser (VCSEL) in the form of the Langevin equations is constructed for arbitrary relations between the frequency parameters. The same theoretical treatment as in Ref.[1,2] are used. For detailed analysis the theory is applied for lasers with equally living laser levels and on this basis the analytical expressions for the spectral densities of the Stokes parameter fluctuations are obtained in the explicit dependence on the physical phenomena, including the spin-flip and the optical anisotropy. It is demonstrated the arbitrary distribution of electrons between the sub-levels under pumping does not restrict a possibility to achieve the noise reduction below the quantum limit. Under comparison with phenomenological treatment Ref.[3] it is shown this approach turns out to be not quite satisfied.
description: 16 pages, 5 figures
AVALIAÇÃO DA POLÍTICA NACIONAL DE IRRIGAÇÃO: O MÉTODO QUASE XPERIMENTAL DE AVALIAÇÃO DE IMPACTO APLICADO AO PROJETO JAÍBA
Creators: name: Reis, Paulo Ricardo Da Costa
name: Silveira, Suely De Fatima Ramos
name: Rodrigues, Pedro Eni Lourenco
name: Reis, Paulo Ricardo Da Costa
name: Silveira, Suely De Fatima Ramos
name: Rodrigues, Pedro Eni Lourenco
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: Política Nacional de Irrigação
subject: perímetro irrigado
subject: avaliação de políticas públicas
subject: análise multivariada
subject: impactos socioeconômicos.

description: Objetivou-se, neste trabalho, avaliar os impactos da Política Nacional de Irrigação (PNI), na bacia do rio São Francisco no Norte do Estado de Minas Gerais, mais especificamente, os impactos do Projeto Jaíba Etapa I. Esse projeto, implantado em 1975, no município de Manga, foi o primeiro e maior perímetro irrigado da região, ocupando uma área irrigável de 24.752 hectares. Do ponto de vista metodológico, foi utilizado um método quase experimental de avaliação de impacto para verificar os fatores que caracterizavam os municípios da bacia no período anterior às ações da PNI, bem como definir um grupo de municípios não beneficiados com a construção do Projeto Jaíba (grupo de controle) para comparação com o município de Manga (beneficiado), cujo território abrangia os atuais municípios de Jaíba e Matias Cardoso. As análises realizadas demonstraram que os impactos do projeto se manifestaram de formas diferentes em relação aos indicadores examinados, sendo os indicadores econômicos os mais atingidos. Assim, conclui-se que o Projeto Jaíba alcançou parcialmente os resultados esperados, pois, se por um lado, ocorreram impactos positivos na produção agrícola, na geração de empregos e no crescimento do PIB per capita, por outro, nota-se que o projeto não teve força suficiente para impulsionar os indicadores desenvolvimento humano e distribuição de renda do município beneficiado.
Unified Models of Inflation and Quintessence
Creators: name: Gonzalez, Andro
name: Matos, Tonatiuh
name: Quiros, Israel
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We apply an extended version of the method developed in reference Int.J.Mod.Phys.D5(1996)71, to derive exact cosmological (flat) Friedmann-Robertson-Walker solutions in RS2 brane models with a perfect fluid of ordinary matter plus a scalar field fluid trapped on the brane. We found new exact solutions, that can serve to unify inflation and quintessence in a common theoretical framework.
description: 8 pages, no figures
Effects of the Zhang-Li Torque on Spin Torque nano Oscillators
Creators: name: Albert, Jan
name: Macià, Ferran
name: Hernàndez, Joan Manel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-torque nano-oscillators (STNO) are microwave auto-oscillators based on magnetic resonances having a nonlinear response with the oscillating amplitude, which provides them with a large frequency tunability including the possibility of mutual synchronization. The magnetization dynamics in STNO are induced by spin transfer torque (STT) from spin currents and can be detected by changes in electrical resistance due to giant magnetoresistance or tunneling magnetoresistance. The STT effect is usually treated as a damping-like term that reduces magnetic dissipation and promotes excitation of magnetic modes. However, an additional term, known as Zhang-Li term has an effect on magnetization gradients such as domain walls, and could have an effect on localized magnetic modes in STNO. Here we study the effect of Zhang-Li torques in magnetic excitations produced in STNO with a nanocontact geometry. Using micromagnetic simulations we find that Zhang-Li torque modify threshold currents of magnetic modes and their effective sizes. Additionally we show that effects can be controlled by changing the ratio between nanocontact size and layer thickness.
Dynamic Nuclear Polarization by optical Stark effect in periodically-pumped gallium arsenide
Creators: name: Dominguez, Michael J.
name: Iafrate, Joseph R.
name: Sih, Vanessa
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Optical pump-probe time- and magnetic-field-resolved Kerr rotation measurements provide a window into the mechanisms that generate dynamic nuclear polarization in bulk gallium arsenide. Previously, we have reported an unexpected dependence of the direction of the nuclear polarization on the sweep direction of the applied external magnetic field. In this paper, we present numerical calculations based on a model for this nuclear polarization due to the optical orientation and optical Stark effect produced by a train of ultrafast optical pulses. We demonstrate the correspondence of the model to our experimental measurements for different laser wavelengths and magnetic field sweep rates. Finally, we show that the model reproduces the sweep direction dependence and provides an explanation for this behavior.
description: 9 pages, 5 figures
Weakly Supervised Vessel Segmentation in X-ray Angiograms by Self-Paced Learning from Noisy Labels with Suggestive Annotation
Creators: name: Zhang, Jingyang
name: Wang, Guotai
name: Xie, Hongzhi
name: Zhang, Shuyang
name: Huang, Ning
name: Zhang, Shaoting
name: Gu, Lixu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The segmentation of coronary arteries in X-ray angiograms by convolutional neural networks (CNNs) is promising yet limited by the requirement of precisely annotating all pixels in a large number of training images, which is extremely labor-intensive especially for complex coronary trees. To alleviate the burden on the annotator, we propose a novel weakly supervised training framework that learns from noisy pseudo labels generated from automatic vessel enhancement, rather than accurate labels obtained by fully manual annotation. A typical self-paced learning scheme is used to make the training process robust against label noise while challenged by the systematic biases in pseudo labels, thus leading to the decreased performance of CNNs at test time. To solve this problem, we propose an annotation-refining self-paced learning framework (AR-SPL) to correct the potential errors using suggestive annotation. An elaborate model-vesselness uncertainty estimation is also proposed to enable the minimal annotation cost for suggestive annotation, based on not only the CNNs in training but also the geometric features of coronary arteries derived directly from raw data. Experiments show that our proposed framework achieves 1) comparable accuracy to fully supervised learning, which also significantly outperforms other weakly supervised learning frameworks; 2) largely reduced annotation cost, i.e., 75.18% of annotation time is saved, and only 3.46% of image regions are required to be annotated; and 3) an efficient intervention process, leading to superior performance with even fewer manual interactions.
Community supported agriculture in Romania: Is it driven by economy or solidarity?
Creators: name: Bîrhală, Brînduşa
name: Möllers, Judith
name: Bîrhală, Brînduşa
name: Möllers, Judith
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Community Supported Agriculture
subject: CSA
subject: small farmers
subject: organic farming
subject: Romania
subject: solidarity economy
subject: rural development

description: Searching for possible viable economic pathways for small-scale farms in Eastern Europe, this study is concerned with Community Supported Agriculture (CSA). We are mainly interested in the costs and benefits for both sides, the farmers and the consumers, when entering into a direct, trust-based market relationship in the form of CSA. The study is theoretically embedded in the concept of solidarity economy. The analysis is based on three cases of farmers pioneering the CSA concept in Romania by offering organic vegetable to their local contracted consumers in the Western part of the country. All three CSA groups were initiated by a local NGO. Our empirical results shed light on CSA partnerships in Romania. With regard to consumers we find that they are drawn from a specific group of urban dwellers with higher education and income, and a particular interest in health and nutrition. Consumers show a high level of trust to their partner farmers: this is the basis for a functioning economic relationship. Solidarity is a value that is aspired by the initiating NGO. It is existing as one of the values sought by consumers when taking part in CSA. More important than solidarity is, however, the consumers’ wish for organic-quality fresh products, which are not available elsewhere. On the producers’ side, the need for a stable market with fair prices is the main motivation to get involved in CSA. Thus, both farmers and consumer compensate for market failures through the CSA partnership.
Making a living : a participatory action research project on the livelihood building strategies of refugees
Creators: name: Huminuik, Kirby Leigh
Publisher: name: University of British Columbia
Year: 2010

description: This study used Participatory Action Research practices to articulate the strategies refugees used to rebuild their livelihoods in Vancouver, British Columbia. Strategies were clustered under eight headings: establishing safety, improving English language fluency, building a social support network, using social services, seeking initial Canadian employment, increasing job satisfaction, accessing training and further education, personal coping strategies. Throughout the interview process, refugee participants also described the problems they confronted while attempting to rebuild. Problems included extreme financial precariousness, low self-efficacy related to refugee status, and systemic barriers to employment. A working group comprised of refugees met to prioritize the problems and suggest recommendations to refugee communities, service providers and policy makers. These recommendations will lead to communicative and exploratory actions in the form of dissemination of information, advocacy, and community building.
Study of the hidden charm pentaquarks $Λ_{c\bar{c}}$ above $4$ GeV
Creators: name: Liu, Xuejie
name: Huang, Hongxia
name: Ping, Jialun
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A dynamical calculation of the strange hidden charm pentaquark systems $Λ_{c\bar{c}}$ is performed in the framework of the quark delocalization color screening model. The effective potentials between two clusters are calculated to investigate the interaction between the baryons and mesons. The dynamic calculations indicate that the strange hidden charm pentaquark system with $IJ^{P}=0\frac{1}{2}^{-}$ and $IJ^{P}=0\frac{3}{2}^{-}$ can form bound states with the help of the channel-coupling. The energies of these two system are 4094.3 MeV and 4207.4 Mev, respectively. These two $Λ_{c\bar{c}}$ states are possible to be intriguing pentaquark candidates which are worth searching in experiments. Whereas, for the systems with isospin $I=1$, the effective potentials of all channels are repulsive, and there is no any bound state for these systems.
description: 7 pages, 3 figures. arXiv admin note: text overlap with arXiv:1905.00583
Conceptual Approach on Effect of Various Concrete Grade in Outrigger and Wall Belt Supported System: A Perceptional Review
Creators: name: Jamle, Sagar
name: Rasheed, Mohammad Bilal
Publisher: name: figshare
Year: 2020
Subjects: subject: 90506 Structural Engineering
subject: FOS: Civil engineering

description: This paper briefs concerning purpose the effect of different grades of concrete which is used in
building where outrigger and wall belt supported system with the help of analytical method by design software.
In this paper also brief the effects of earthquake and non-earthquake actions of multistory building with different
grades of concrete discussed in connection with outrigger and wall belt support system. The major principle of
the review work is to study the effect of different grades of concrete in outrigger and wall belt support system
multistory buildings in the view of various researchers. The study can also be useful for low as well as high
seismic prone areas as well. The software analysis also been referred for the analysis in the research field. This
study deals with the comparative analysis of the research trend on the current topic and after the survey,
comprehensive outcomes are provided in conclusions that forms the objectives of the further upcoming study.
title: Multi-objective user and virtual machine assignment using biogeography-based optimization
Creators: name: Rohrer, Florian
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Resource allocation
subject: Edge Computing
subject: Resource Allocation efficiency
subject: Genetic algorithms
subject: Resource allocation
subject: Edge Computing
subject: Resource Allocation efficiency
subject: Genetic algorithms

description: Applications such as vehicle routing systems, smart city applications and augmented reality games are new and demanding applications that have very low latency requirements. Fog Computing is a newcomputing paradigm that will pave theway for these applications. To that end, service providers will deploy their hardware (gateways, routers, servers) outside of data centers in order to move their infrastructure as close as possible to their users. In order to get benefit from the infrastructure, users have to be assigned to the right servers, depending on their physical location. Simultaneously, the users’ applications, have to be assigned to the same servers, ideally such that they are in close proximity to their users. The different objectives of both service providers and users, as well as physical limitations and constraints, however, make this assignment task a challenging problem. We capture user and service provider goals by six different objective functions (user distance, power consumption, resource waste, failure probability, reachability, user evenness). We use Biogeography-based optimization (BBO), a kind of genetic algorithm inspired by nature, to find solutions that simultaneously minimize all these functions in a multiobjective Pareto approach. As exact solutions are hard to obtain, we compare BBO against a greedy algorithm and the Genetic algorithm (GA). Our extensive simulations suggest that BBO is indeed applicable to find reasonably good solutions, however results vary upon the used objective function. BBO generally outperforms the greedy algorithm in almost all of the instances and often delivers slightly better results than GA as well, especially for smaller instance sizes. The work shows that BBO is an admissible approach for solving this assignment problem encountered in Fog Computing which can lead to lower latency for user applications and cost savings and higher availability guarantees for service providers.
title: 01_1343
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Effects of Radiation Damage on the Optical Properties of Glass
Creators: name: Simonetto, Federica
name: Marmonti, Matteo
name: Potenza, Marco AC
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the optical properties of glass exposed to ionizing radiation, as it occurs in the space environment. 24 glass types have been considered, both space qualified and not space qualified. 72 samples (3 for each glass type) have been irradiated to simulate a total dose of 10krad and 30krad, imposed by a proton beam at KVI-Centre of Advanced Radiation Technology (Groeningen). Combining the information about stopping power and proton fluence, the time required to reproduce any given total dose in the real environment can be easily obtained. The optical properties, such as spectral transmission and light scattering have been measured before and after irradiation for each sample. Transmission has been characterized within the wavelength range 200 nm-1100 nm. Indications that systematical issues depend on the dopant or composition are found and described. This work aims at extending the existing list of space-compliant glasses in terms of radiation damage.
description: 37 pages, 8 figures
title: Solving the #SAT problem on the GPU with dynamic programming and OpenCL
Creators: name: Zisser, Markus
Publisher: name: TU Wien
Year: 2018
Subjects: subject: Propositional Logic
subject: #SAT
subject: Dynamic Programming
subject: Tree Decompositions
subject: GPU
subject: Propositional Logic
subject: #SAT
subject: Dynamic Programming
subject: Tree Decompositions
subject: GPU

description: There are many computational hard problems in computer science and a variety of these problems can be expressed via Boolean formulas. For some of these problems, the number of satisfying assignments can be directly linked to the solution. The task to compute the number of solutions of a Boolean formula is called the #SAT problem. Algorithms in artificial intelligence and machine learning tasks have profited from the massive parallelism provided by Graphic Processing Units (GPUs). However many current #SAT solvers rely on techniques from Satisfiability solving or approximate solving based on sampling of the search space. A central method for solving the Satisfiability problem is Conflict Driven Clause Learning (CDCL), but CDCL contains parts which are hard to or not parallelizable at all. CDCL does not work well on the GPU since parallelization on the GPU requires an algorithm with many similar independent steps. Dynamic Programming (DP) on tree decompositions on the other hand parallelizes well as we can execute many similar operations which are independent from another. For DP we need tree decompositions with a sufficiently small width. In the course of this thesis we developed gpusat, a #SAT solver which is based on dynamic programming on tree decompositions with OpenCL, an open standard that can be used to parallelize tasks on the GPU. We use tree decompositions of the primal, incidence and dual graph as base for our dynamic programming algorithms. gpusat is also able to solve Weighted Model Counting (WMC) where a weight is assigned to every literal and the weight of a solution is the product of its literal weights. To compare gpusat with other solvers we collected #SAT and WMC instances from different sources, and generated tree decompositions of the primal, incidence and dual graph for each of these instances. Then we compared the runtime of gpusat with other state of the art #SAT and WMC solvers on our instances. To get a better understanding of our benchmark set we also generated an overview of the tree width for our benchmark instances. Our experiments have shown that gpusat is competitive with other solvers for a tree width of up to 30. We were also able to solve some instances with a tree width of up to 45. About half of the instances had a width of 30 or below.
A Gemini/GMOS study of the bright elliptical galaxy NGC 3613 and its globular cluster system
Creators: name: De Bórtoli, Bruno J.
name: Bassino, Lilia P.
name: Caso, Juan P.
name: Ennis, Ana I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the first photometric study of the globular cluster system (GCS) of the E galaxy NGC 3613 (Mv = -21.5, d = 30.1 Mpc), as well as the surface photometry of the host galaxy, based on Gemini/GMOS images. Being considered the central galaxy of a group, NGC 3613 inhabits a low-density environment although its intrinsic brightness is similar to the expected one for galaxies in the centre of clusters. The following characteristics are obtained for this GCS. The colour distribution is bimodal, with metal-poor globular clusters (GCs) getting slightly bluer with increasing radius. The radial and azimuthal projected distributions show that metal-rich GCs are more concentrated towards the host galaxy and trace its light distribution very precisely, while metal-poor GCs present a more extended and uniform distribution. The GC luminosity function helps validate the adopted distance. The estimated total GC population of Ntot= 2075 +/- 130 leads to a specific frequency Sn=5.2 +/- 0.7, a value within the expected range for GCSs with host galaxies of similar luminosity. The surface photometry of NGC 3613 reveals a three-component profile and a noticeable substructure. Finally, a small sample of ultra-compact dwarf (UCD) candidates are identified in the surroundings of the host galaxy.
The meaning of the lived experience of the struggle to forgive
Creators: name: Milley, A. Tyler
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study was to explore the meaning of the lived experience of the struggle to forgive. Six people currently engaged in the struggle to forgive described their understandings of their experiences in written and semi-structured interview formats. The orientating questions used to guide participants was, "What can you tell me about your struggle to forgive?" and, "What have you learned about forgiveness based on your struggle?" A qualitative, interpretive phenomenological approach was used to collect and analyze the testimonies provided by participants and to construct hermeneutical statements based on their written and spoken stories. The six participants varied in gender, age, ethnicity, spirituality, and experiences. Five themes emerged as a result of the phenomenological analyses: struggles with forgiveness, struggles with oneself, struggles with the offender, struggles with outside influences, and struggles with reconciliation.
Thermo-electrical modelling of the ATLAS ITk Strip Detector
Creators: name: Beck, Graham
name: Brendlinger, Kurt
name: Chen, Yu-Heng
name: Viehhauser, Georg
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this paper we discuss the use of linked thermal and electrical network models to predict the behaviour of a complex silicon detector system. We use the silicon strip detector for the ATLAS Phase-II upgrade to demonstrate the application of such a model and its performance. With this example, a thermo-electrical model is used to test design choices, validate specifications, predict key operational parameters such as cooling system requirements, and optimize operational aspects like the temperature profile over the lifetime of the experiment. The model can reveal insights into the interplay of conditions and components in the silicon module, and it is a valuable tool for estimating the headroom to thermal runaway, all with very moderate computational effort.
description: 16 pages, 15 figures
On the complexity of finding the maximum entropy compatible quantum state
Creators: name: Di Giorgio, Serena
name: Mateus, Paulo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 68Q17, 81Q35

description: Herein we study the problem of recovering a density operator from a set of compatible marginals, motivated from limitations of physical observations. Given that the set of compatible density operators is not singular, we adopt Jaynes' principle and wish to characterize a compatible density operator with maximum entropy. We first show that comparing the entropy of compatible density operators is QSZK-complete, even for the simplest case of 3-chains. Then, we focus on the particular case of quantum Markov chains and trees and establish that for these cases, there exists a quantum polynomial circuit that constructs the maximum entropy compatible density operator. Finally, we extend the Chow-Liu algorithm to the same subclass of quantum states.
description: 21 pages, 2 figures
Deep Learning Assisted Data Inspection for Radio Astronomy
Creators: name: Mesarcik, Michael
name: Boonstra, Albert-Jan
name: Meijer, Christiaan
name: Jansen, Walter
name: Ranguelova, Elena
name: van Nieuwpoort, Rob V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Modern radio telescopes combine thousands of receivers, long-distance networks, large-scale compute hardware, and intricate software. Due to this complexity, failures occur relatively frequently. In this work we propose novel use of unsupervised deep learning to diagnose system health for modern radio telescopes. The model is a convolutional Variational Autoencoder (VAE) that enables the projection of the high dimensional time-frequency data to a low-dimensional prescriptive space. Using this projection, telescope operators are able to visually inspect failures thereby maintaining system health. We have trained and evaluated the performance of the VAE quantitatively in controlled experiments on simulated data from HERA. Moreover, we present a qualitative assessment of the the model trained and tested on real LOFAR data. Through the use of a naive SVM classifier on the projected synthesised data, we show that there is a trade-off between the dimensionality of the projection and the number of compounded features in a given spectrogram. The VAE and SVM combination scores between 65% and 90% accuracy depending on the number of features in a given input. Finally, we show the prototype system-health-diagnostic web framework that integrates the evaluated model. The system is currently undergoing testing at the ASTRON observatory.