Search results for " formula"
showing 10 items of 629 documents
Functional Derivative Approach
2001
Let us now leave the path integral formalism temporarily and reformulate operatorial quantum mechanics in a way which will make it easy later on to establish the formal connection between operator and path integral formalism. Our objective is to introduce the generating functional into quantum mechanics. Naturally we want to generate transition amplitudes. The problem confronting us is how to transcribe operator quantum mechanics as expressed in Heisenberg’s equation of motion into a theory formulated solely in terms of c-numbers. This can be achieved either by Schwinger’s action principle or with the aid of a generation functional defined as follows:
Vectors, Tensors, Manifolds and Special Relativity
2015
Assuming that the reader is familiar with the notion of vectors, within a few pages, with a few examples, the reader will get to be familiar with the generic picture of tensors. With the specific notions given in this chapter, the reader will be able to understand more advanced tensor courses with no further effort. The transition between tensor algebra and tensor calculus is done naturally with a very familiar example. The notion of manifold and a few basic key aspects on Special Relativity are also presented.
CY-Operators and L-Functions
2019
This a write up of a talk given at the MATRIX conference at Creswick in 2017 (to be precise, on Friday, January 20, 2017). It reports on work in progress with P. Candelas and X. de la Ossa. The aim of that work is to determine, under certain conditions, the local Euler factors of the L-functions of the fibres of a family of varieties without recourse to the equations of the varieties in question, but solely from the associated Picard–Fuchs equation.
On the Estimation of the Volatility-Growth Link
2012
It is common practice to estimate the volatility-growth link by specifying a standard growth equation such that the variance of the error term appears as an explanatory variable in this growth equation. The variance in turn is modeled by a second equation. Hardly any of existing applications of this framework includes exogenous controls in this second variance equation. Our theoretical findings suggest that the absence of relevant explanatory variables in the variance equation leads to a biased and inconsistent estimate of the volatility-growth link. Our simulations show that this effect is large. Once the appropriate controls are included in the variance equation consistency is restored. I…
685 Food Allergy - Gastro-Esophageal Reflux Disease Association in Infants
2012
Background Cow’s milk allergy is considered to be the first and most common type of allergy during early infancy. Gastro-esophageal reflux disease and cow’s milk allergy are two different diseases with common clinical features. The aim of the study was to evaluate the clinical data in relation with gastroesophageal reflux and cow’s milk allergy in infants. Material and Methods The prospective study includes 36 infants aged between 2–6 months who attended at Pediatric Clinic during the year 2011 for the clinical evocative manifestations of gastroesophageal reflux. Study protocol includes: clinical criteria, familial/personal atopic features, mother diet, duration of breastfeeding, infant for…
Electromechanical Numerical Analysis of an Air-Core Pulsed Alternator via Equivalent Network Formulation
2017
In this paper, the numerical analysis on an air-core pulsed alternator is presented. Since compulsators are characterized by very fast electromechanical transients, their accurate analysis requires strong coupling between the equations governing the electrical and the mechanical behaviors. The device is investigated by using a dedicated numerical code capable to take into account eddy currents, compensating windings, as well as the excitation/control circuits. Furthermore, the code is capable of modeling centrifugal forces and vibrations acting on the shaft due to electric and mechanical unbalances or to misalignments of the shaft from its centered position. This makes the code a very power…
Polysorbate 80 controls Morphology, structure and stability of human insulin Amyloid-Like spherulites
2022
AbstractAmyloid protein aggregates are not only associated with neurodegenerative diseases and may also occur as unwanted by-products in protein-based therapeutics. Surfactants are often employed to stabilize protein formulations and reduce the risk of aggregation. However, surfactants alter protein-protein interactions and may thus modulate the physicochemical characteristics of any aggregates formed. Human insulin aggregation was induced at low pH in the presence of varying concentrations of the surfactant polysorbate 80. Various spectroscopic and imaging methods were used to study the aggregation kinetics, as well as structure and morphology of the formed aggregates. Molecular dynamics s…
Corrigendum to “Polysorbate 80 controls Morphology, structure and stability of human insulin Amyloid-Like spherulites” [J. Colloid Interface Sci. 606…
2023
ZS "Avotiņi" saimnieciskās darbības analīze un nākotnes attīstības perspektīvas
2016
Maģistra darbā ir veikta ZS “Avotiņi” saimnieciskā darba analīze, izmantojot sekojošas analīzes metodes: •pārskata lasīšana; •horizontālā analīze; •vertikālā analīze; •finanšu koeficientu aprēķināšana. Finanšu pārskatu lietotāji, veicot finanšu analīzi, var iegūt informāciju par uzņēmuma saimniecisko vai finanšu stāvokli. Tas ļauj pieņemt lēmumus par līdzekļu investēšanu, tādejādi jebkurš lēmums var būtiski ietekmēt tālāku saimniecisko un finansiālo darbību. Darba teorētiskajā daļā autore maģistra darbā apraksta finansiālā stāvokļa mērķus un metodes, raksturo informācijas avotus un lietotājus. Lai novērtētu uzņēmuma saistību racionālu izmantošanu, darba praktiskajā daļā tiek novērtēta bilan…
La « mise en formule » par les hashtags : analyse de nouvelles formes « ultra-brèves » dans les tweets de campagne des européennes (2014)
2017
National audience; La communication, basée sur un corpus de tweets en français et en allemand compilé pendant la campagne électorale pour les élections européennes de 2014, interroge les relations potentielles entre les hashtags et la notion de "formule" telle qu'elle a été développée en analyse du discours. Elle s'intéresse en particulier à la question du rôle des hashtags comme réducteur et démultiplicateur de la brièveté intrinsèque des tweets.