2,630 research outputs found

    Stock returns in emerging markets

    Full text link

    On the incorporation of interval-valued fuzzy sets into the Bousi-Prolog system: declarative semantics, implementation and applications

    Full text link
    In this paper we analyse the benefits of incorporating interval-valued fuzzy sets into the Bousi-Prolog system. A syntax, declarative semantics and im- plementation for this extension is presented and formalised. We show, by using potential applications, that fuzzy logic programming frameworks enhanced with them can correctly work together with lexical resources and ontologies in order to improve their capabilities for knowledge representation and reasoning

    Fe-Ti-V occurrence associated to Serra da Alegria Gabbro-Anortosite Magmatism, Rio Apa Massif, Mato Grosso do Sul

    Get PDF
    O Maciço Rio Apa constitui exposições de rochas paleoproterozoicas na porção extremo sul do Cráton Amazônico. A região é constituída por rochas do Complexo Rio Apa, Grupo Alto Tererê e pelo Grupo Amonguijá, formado pelas suítes Vulcânica Serra da Bocaina e Plutônica do Batólito Alumiador. O segmento norte do batólito é caracterizado por rochas ácidas-básicas da Serra da Alegria, ocorrendo, na parte central, rochas da Sequência Magmática Ácida-Intermediária, representadas pelo granito homônimo. No seu entorno, no sopé das escarpas, aflora a Sequência Magmática Gabro-Anortosítica da Serra da Alegria, composta por magnetita gabro, quartzo gabro a leuco gabro, pegmatito básico e anortosito. Essas rochas gabroides constituem uma ocorrência magmática, cumulática básica, estratiforme, semiconcordante, formada por processos de cristalização fracionada, por flotação dos plagioclásios em anortosito, nas porções superiores da câmara magmática e, na parte inferior, por segregação gravítica, a concentração de cumulus de óxido de ferro constitui magnetita gabro e magnetitito. Os minerais magmáticos identificados correspondem a andesina-labradorita, apresentando teor de anortita entre An36,76– An58,06 e clinopiroxênio cálcico do tipo ferro-augita e augita. Os óxidos de ferro predominantes são ferromagnetita, com valores de FeOt entre 88,03 e 92,98%, e titanomagnetita, com valores de TiO2 entre 1,13 e 6,39%. As fases subordinadas são representadas por vanádio magnetita, com valores de V2O5 entre 0,75 e 0,98%, e ilmenita. O magmatismo básico-anortosítico sin a pós-orogênico foi resultado da cristalização de um magma mantélico primário que, associado a processos de diferenciação, gerou variedades de gabros e diabásios de composições Fe-toleíticas e diferenciados anortosíticos, em ambientes de arco de ilha a intraplaca.The Rio Apa Massif is defined by the exposition of paleoproterozoic rocks in the extreme southern portion of the Amazonian Craton. The region consists of rocks from the Rio Apa Complex, Alto Tererê Group, and the Amonguijá Group, which are identified by the Serra da Bocaina Volcanic Suite and Alumiador Plutonic Suite. The northern batholith segment is characterized by acid-basic Serra da Alegria rocks, which is composed in its central part of the Serra da Alegria Acid-Intermediate Magmatic Sequence, identified by the homonymous Granite. In its surroundings, at the cliffs’ foothills, the Serra da Alegria Gabbro-Anorthositic Magmatic Sequence outcrops, composed by magnetite gabbro, quartz gabbro to leucogabbro, basic pegmatite and anorthosite. In marginal areas, constituting the foothills of the cliffs, the Serra da Alegria Gabbro-Anorthosite Magmatic Sequence is composed of magnetite gabbro, quartz gabbro, leucogabbro, basic pegmatite and anorthosite. These gabbroid rocks constitute a semi-concordant stratiform basic cumulated magmatic deposit generated from fractional crystallization processes by gravitational segregation, resulting in the formation of anorthosite in the upper portions of the magma chamber. In the lower part, segregation of iron oxides cumulus constituted magnetite gabbro and magnetite rocks. The magmatic minerals are andesine-labradorite, with anorthite content between An36,76 to An58,06 and calcic clinopyroxene, as augite and iron-augite type. Iron oxides are predominantly ferromagnetite, with FeOt values between 88.03 and 92.98%, and titanium magnetite with TiO2 values between 1.13 and 6.39%. Subordinate oxide phases consist of vanadium magnetite, with values of V2O5 between 0.75 and 0.98%, and ilmenite. The syn- to post-orogenic basic-anorthositic magmatism evolution was the result of the crystallization of a primary mantle magma, which, associated with differentiation processes, generate

    Modular ‘Click-in-Emulsion’ Bone-Targeted Nanogels

    Get PDF
    A new class of nanogel demonstrates modular biodistribution and affinity for bone. Nanogels, ~70 nm in diameter and synthesized via an astoichiometric click-chemistry in-emulsion method, controllably display residual, free clickable functional groups. Functionalization with a bisphosphonate ligand results in significant binding to bone on the inner walls of marrow cavities, liver avoidance, and anti-osteoporotic effects.National Institutes of Health (U.S.) (RO1 DE016516)National Institutes of Health (U.S.) (R01 EB000244)Damon Runyon Cancer Research Foundation (DFS-#2050-10

    Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at √ s = 8 TeV with the ATLAS detector

    Get PDF
    Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb−1 of √ s = 8 TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with pT > 120 GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between Emiss T > 150 GeV and Emiss T > 700 GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with either large extra spatial dimensions, pair production of weakly interacting dark matter candidates, or production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presente

    Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

    Full text link
    Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

    Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 TeV and combination with 8 TeV data

    Get PDF
    Peer reviewe
    corecore