How do new ideas emerge in academic contexts and what forces determine which get selected are forgotten? We analyze all papers presented at the ANPEC Brazilian Economics National Meetings from 2013 to 2019 using topic modeling Kullback-Leibler divergence measure novelty resonance. In contrast simply counting citations or reference combinations, these methods explore Shannon information actual t...

web usage mining (wum) is the automatic discovering of hidden informationof user access pattern from the web log data. frequent pattern discovery is one ofthe main techniques in wum that can be used to implement recommender systems,forecast user`s navigational behaviour, and personalize web sites. many algorithmshave been suggested on obtaining frequent user navigation patterns. this paperprese...

The ion-molecule reactions Fe(+) + N2O → FeO(+) + N2 and FeO(+) + CO → Fe(+) + CO2, which catalyze the reaction CO + N2O → CO2 + N2, have been studied over the temperature range 120-700 K using a variable temperature selected ion flow tube apparatus. Values of the rate constants for the former two reactions were experimentally derived as k2 (10(-11) cm(3) s(-1)) = 2.0(±0.3) (T/300)(-1.5(±0.2)) ...

The green colored complexes of the type Re(V)O(L(SB))Cl(2), 1, have been synthesised by reacting NBu(4)[ReOCl(4)] with HL(SB) in dry ethanol. Here, L(SB)(-) are the deprotonated forms of N-(2-hydroxybenzyl)-2-picolylamine (HL(SB)(1)); N-(2-hydroxybenzyl)-N',N'-dimethylethylenediamine (HL(SB)(2)) and N-(2-hydroxybenzyl)-N',N'-diethylethylenediamine (HL(SB)(3)). Similarly, NBu(4)[ReOCl(4)] reacte...

The tunnel magnetoresistance (TMR) of F/O/F magnetic junctions, (F’s are ferromagnetic layers and O is an oxide spacer) in the presence of magnetic impurities within the barrier, is investigated. We assume that magnetic couplings exist both between the spin of impurity and the bulk magnetization of the neighboring magnetic electrode, and between the spin of impurity and the spin of tunneling el...

SU(5) gauge theory with massless left-handed fermions in the representation 5 ⊕ 15 ⊕ 40 ⊕ 45 * (QUD) may have a bound-state S-Matrix that, uniquely, contains the asymptotically unitary Critical Pomeron and which might also reproduce the full Standard Model. If so, QUD would provide an underlying unification for the Standard Model in which very similar massless fermion anomaly dynamics is respon...

introduction: cigarette smoking is a major modifiable risk factor for cardiovascular disease and it has been identified as the single most important cause of cardiovascular accident related deaths in most countries. methods: 1573 people who lives in 17th zone of tehran (population research center of tehran university of medical sciences) were investigated by a cross- sectional study. a group of...

background and aims: depression is a growing public health problem in the world. in this study we investigated the relationship between dietary patterns and depression in adults aged 20-50 years living in shiraz, iran. methods: in a cross-sectional study, 416 subjects (180 men and 236 women) aged 20 to 50 years were selected by stratified multistage random sampling. dietary intakes were assesse...

Octet baryon axial, induced pseudoscalar, and pseudoscalar form factors are computed using a symmetry-preserving treatment of vector$\,\times\,$vector contact interaction (SCI), thereby unifying them with an array other properties analogous treatments semileptonic decays mesons. The baryons treated as quark--plus--interacting-diquark bound states, whose structure is obtained by solving Poincar\...

Abstract Every year, the steelmaking industry produces millions of tons slags resulting in pollution to environment. Among waste, secondary metals and scales rich iron oxides are also thrown away. There is a need treat steel waste reasonably way protect environment proposing new cheap technologies for producing advanced materials. In this study we report morphological structural characterizatio...