Durum wheat in olive orchard: more income for the farmers?

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Surface Networks

We study data-driven representations for three-dimensional triangle meshes, which are one of the prevalent objects used to represent 3D geometry. Recent works have developed models that exploit the intrinsic geometry of manifolds and graphs, namely the Graph Neural Networks (GNNs) and its spectral variants, which learn from the local metric tensor via the Laplacian operator. Despite offering excellent sample complexity and built-in invariances, intrinsic geometry alone is invariant to isometric deformations, making it unsuitable for many applications. To overcome this limitation, we propose several upgrades to GNNs to leverage extrinsic differential geometry properties of three-dimensional surfaces, increasing its modeling power. In particular, we propose to exploit the Dirac operator, whose spectrum detects principal curvature directions --- this is in stark contrast with the classical Laplace operator, which directly measures mean curvature. We coin the resulting models \emph{Surface Networks (SN)}. We prove that these models define shape representations that are stable to deformation and to discretization, and we demonstrate the efficiency and versatility of SNs on two challenging tasks: temporal prediction of mesh deformations under non-linear dynamics and generative models using a variational autoencoder framework with encoders/decoders given by SNs

Capital Investment and Rural-Urban Migration in China

This paper explores the linkages between the population, investment, and wages in both China nationally and in each of China’s provinces. The expected result of these linkages is twofold. First, provinces with the greatest per capita investment, whether state-sponsored or private, should in theory experience the greatest change in per capita wage. This is due to the increased marginal product of labor resulting from capital investment, which ultimately will be reflected in per capita wages in a perfectly competitive market. From this hypothesis, it follows that the provinces experiencing the greatest change in wage per capita will experience the greatest change in population. It is logical to assume that rural workers will move to urban areas if the wage incentive is great enough. Though the population increase will, in theory, push urban wages down, this effect is secondary and should take a longer period of time

Morphologic Criteria of Lesion Activity in Neovascular Age-Related Macular Degeneration: A Consensus Article

Intravitreal antivascular endothelial growth factor drugs represent the current standard of care for neovascular age-related macular degeneration (nAMD). Individualized treatment regimens aim at obtaining the same visual benefits of monthly injections with a reduced number of injections and follow-up visits, and, consequently, of treatment burden. The target of these strategies is to timely recognize lesion recurrence, even before visual deterioration. Early detection of lesion activity is critical to ensure that clinical outcomes are not compromised by inappropriate delays in treatment, but questions remain on how to effectively monitor the choroidal neovascularization (CNV) activity. To assess the persistence/recurrence of lesion activity in patients undergoing treatment for nAMD, an expert panel developed a decision algorithm based on the morphological features of CNV. After evaluating all current retinal imaging techniques, the panel identified optical coherent tomography as the most reliable tool to ascertain lesion activity when funduscopy is not obvious

Museological approach to web space: Online Exhibition of the MNBA´s Collection

La presencia en Internet del Museo Nacional de Bellas Artes de Argentina no escapa a las innovaciones tecnológicas-comunicativas que transformaron en las últimas décadas la museología en general. En consecuencia, esta institución adoptó distintas especificidades dentro del entorno virtual para poder exponer su patrimonio artístico. En este trabajo, se intentará repasar de forma preliminar y exploratoria algunas construcciones que se evidencian dentro del diseño del sitio web y las prestaciones que permite el proyecto de Google, para luego, introducirnos en la función de exhibición online de sus obras de arte como imágenes pixeles. El rasgo que presenta este tipo de patrimonio nos acerca a una manera específica de exhibición de sus colecciones en el entorno virtual. El Consejo Internacional de Museos (ICOM) considera que los museos deben velar para que sus exposiciones físicas y virtuales presenten información fehaciente, conforme a las misiones, políticas y finalidades declaradas por cada institución. Por tanto, el recorrido de este trabajo plantea como objetivo analizar las implicancias y de qué manera el MNBA expone su patrimonio de manera virtual a partir de su portal www.mnba.gob.ar y desde la experiencia Google art project.The online presence of the Argentine National Fine Arts Museum (MNBA) cannot be conceived without considering the technological and communicative innovations that have transformed museum studies over the last decades. This institution has, therefore, adopted a number of specific virtual tools to display its art heritage. This work aims to revise in a preliminary and exploratory way some constructions within website design and the tools offered by Google Art Project, in order to then focus on the online display of works of art as series of pixels. The most distinctive features of this type of heritage lead us to a specific way of exhibiting art collections in the virtual space. The International Council of Museums (ICOM) considers that museums should look out for their physical and virtual exhibits presenting trustworthy information, in accordance with the aims, policies, and purposes set by the above mentioned institution. Thus, the aim of this outline will be to consider the implications and the strategies used by the MNBA to exhibit its art heritage online, by means of both its own website www.mnba.gob.ar and the Google Art Project platform.Fil: Panozzo Zenere, Alejandra Gabriela. Universidad Nacional de Rosario. Facultad de Ciencias Políticas y Relaciones Internacionales. Instituto de Investigaciones. Centro de Investigaciones en Mediatizaciones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario; Argentin