Search results for "SIM"
showing 10 items of 10139 documents
Sequential and joint hydrogeophysical inversion using a field-scale groundwater model with ERT and TDEM data
2013
Abstract. Increasingly, ground-based and airborne geophysical datasets are used to inform groundwater models. Recent research focuses on establishing coupling relationships between geophysical and groundwater parameters. To fully exploit such information, this paper presents and compares a joint hydrogeophysical inversion (JHI) approach and sequential hydrogeophysical inversion (SHI) approach to inform a field-scale groundwater model with Time Domain Electromagnetic (TDEM) and Electrical Resistivity Tomography (ERT) data. The implemented SHI coupled inverted geophysical models with groundwater parameters, where the strength of the coupling was based on geophysical parameter resolution. To t…
Evaluation of Options using the Black-Scholes Methodology
2019
This paper discusses how to obtain the Black-Scholes equation to evaluate options and how to obtain explicit solutions for Call and Put. The Black-Scholes equation, which is the basis for determining explicit solutions for Call and Put, is a rather sophisticated equation. It is a partial differential equation of the second order, parabolic, similar to the heat equation. The terms of the equation express diffusion in a homogeneous environment, convection and reaction. The main objective of the paper is to present the Black-Scholes methodology and apply this methodology on the underlying asset of the nature of the listed stock on the Bucharest Stock Exchange. Also, a secondary objective is to…
The risk assessment of the investments in the companies belonging to the manufacturing industry in Romania, listed on the Bucharest Stock Exchange
2018
VaR represents an advanced model of risk management, appropriate for estimating the financial risk of a financial title taken individually or of a portfolio of titles. The research aims to quantify the maximum loss of the securities value, based on their daily closing prices, at a 5% relevance level, using the historical simulation method. The research sample consists of a number of 33 companies belonging to the manufacturing industry in Romania, listed on the Bucharest Stock Exchange, at standard and premium categories. Based on a number of 260 statistical observations, corresponding to the working days from the period 01.01.2016 - 31.12.2016, it was determined the maximum loss of value fo…
Tillage Versus No-Tillage. Soil Properties and Hydrology in an Organic Persimmon Farm in Eastern Iberian Peninsula
2020
There is an urgent need to implement environmentally friendly agriculture management practices to achieve the Sustainable Goals for Development (SDGs) of the United Nations by 2030. Mediterranean agriculture is characterized by intense and millennia-old tillage management and as a consequence degraded soil. No-Tillage has been widely examined as a solution for soil degradation but No-Tillage relies more on the application of herbicides that reduce plant cover, which in turn enhances soil erosion. However, No-Tillage with weed cover should be researched to promote organic farming and sustainable agriculture. Therefore, we compare Tillage against No-Tillage using weed cover as an alternative …
TLR7 controls VSV replication in CD169(+) SCS macrophages and associated viral neuroinvasion
2019
Vesicular stomatitis virus (VSV) is an insect-transmitted rhabdovirus that is neurovirulent in mice. Upon peripheral VSV infection, CD169+ subcapsular sinus (SCS) macrophages capture VSV in the lymph, support viral replication, and prevent CNS neuroinvasion. To date, the precise mechanisms controlling VSV infection in SCS macrophages remain incompletely understood. Here, we show that Toll-like receptor-7 (TLR7), the main sensing receptor for VSV, is central in controlling lymph-borne VSV infection. Following VSV skin infection, TLR7−/− mice display significantly less VSV titers in the draining lymph nodes (dLN) and viral replication is attenuated in SCS macrophages. In contrast to effects o…
Quantitative Prediction of the Landscape of T Cell Epitope Immunogenicity in Sequence Space
2019
Immunodominant T cell epitopes preferentially targeted in multiple individuals are the critical element of successful vaccines and targeted immunotherapies. However, the underlying principles of this "convergence" of adaptive immunity among different individuals remain poorly understood. To quantitatively describe epitope immunogenicity, here we propose a supervised machine learning framework generating probabilistic estimates of immunogenicity, termed "immunogenicity scores," based on the numerical features computed through sequence-based simulation approximating the molecular scanning process of peptides presented onto major histocompatibility complex (MHC) by the human T cell receptor (T…
Coarticulació i assimilació en fonologia : dades de moviment lingual sobre els grups consonàntics amb C2=/d/ en català
2021
This paper uses the electromagnetic midsagittal articulometry technique (EMMA) for the investigation of tongue tip and tongue blade activity during the production of Catalan clusters consisting of consonants specified for adjacent places of articulation. C2 of these clusters is /d/ (a dental in Catalan); C1 is either an alveolar (/1/, /n/, /r/, /z/), a post-alveolar (/?/) or an alveopalatal (/?/). Apical and laminal trajectories for these clusters are compared to those for intervocalic /d/ and for intervocalic C 1. Data show the presence of a single dental articulation for /nd/ and /1d/ and of two sequential articulatory places (alveolar for Cl and dental for C2) in the case of the cluster …
Mossàrabs en temps de conquesta. Observacions historiogràfiques
2011
En els darrers anys la crítica historiogràfica envers la representació dels mossàrabs com a factors de continuïtat identitària, religiosa i lingüística ha estat objecte d’un canvi important. L’atenció ja no es dirigeix tant a la capacitat de pervivència de les estructures eclesiàstiques i les comunitats locals, com a l’abast de l’arabització i la pèrdua dels referents culturals llatins. La rapidesa i la intensitat de l’assimilació lingüística dels cristians d’al-Andalus són tan notables que permeten plantejar la qüestió de la convergència de les seues formes d’organització social amb les dels musulmans i, per tant, el distanciament respecte a aquelles pròpies dels cristians del nord. El fet…
La pàtria somniada dels poetes de la renaixença valenciana
2011
Anàlisi de vuit poemaris dels principals autors de la Renaixença valenciana, a fi de comprovar quina imatge oferiren del País Valencià. Una visió que està unida a la descripció del paisatge, entès aquest com aquell que pot oferir una descripció més tangible del país. Aquesta visió fou duta a terme des d’una perspectiva sentimental i econòmica, fonamentalment, i amb una clara voluntat ideològica; es concretava en la bellesa i riquesa de tres indrets geogràfics ben delimitats i sovint complementaris: el mar, l’àrea de regadiu i la muntanya. Una imatge fonamentalment idíl·lica, somniada i que, encara que elaborada a partir d’una base real, amb el pas del temps acabaria com a lloc comú, continu…
El mite de la terra alta
2011
La identificació del camp amb la genuïnitat no és exclusiva de la cultura catalana. L’article analitza la construcció d’aquest mite en la literatura catalana del segle xix, prestant particular atenció a la derivació patriòtica que uneix paisatge, habitants i tradicions rurals amb la Catalunya real que lentament anava desapareixent com a resultat de les revolucions polítiques i industrials. El mite de la terra alta ha proporcionat símbols tan freqüentment utilitzats com ara el de la barretina (un tipus de capell) i la muntanya, així com alguns debats ben interessants sobre l’organització tradicional de la família i els contrastos entre camp-ciutat i tradició-revolució.