Search results for "Horizon"

Semigenerated Carnot algebras and applications to sub-Riemannian perimeter

2021

This paper contributes to the study of sets of finite intrinsic perimeter in Carnot groups. Our intent is to characterize in which groups the only sets with constant intrinsic normal are the vertical half-spaces. Our viewpoint is algebraic: such a phenomenon happens if and only if the semigroup generated by each horizontal half-space is a vertical half-space. We call semigenerated those Carnot groups with this property. For Carnot groups of nilpotency step 3 we provide a complete characterization of semigeneration in terms of whether such groups do not have any Engel-type quotients. Engel-type groups, which are introduced here, are the minimal (in terms of quotients) counterexamples. In add…

Early Treatment in HCV: Is it a Cost-Effective Option from the Italian Perspective?

2016

Background: The aim of this study is to perform an economic analysis to estimate the cost-utility of the early innovative therapy in Italy for managing HCV-infected patients.Methods: The incremental cost-utility analysis was carried out to quantify the benefits of the early treatment approach in HCV subjects. A Markov simulation model including direct and indirect costs and health outcomes was developed from Italian National Healthcare Service and societal perspective. 5,000 Monte Carlo simulations were performed on two distinct scenarios: Standard of Care (SoC) which includes 14.000 Genotype 1 patients in Italy treated with innovative interferon-free in the Fibrosis stage 3 and 4 (F3-F4) v…

Construyendo el espacio geográfico a partir del mundo subjetivo de los alumnos

2014

El presente trabajo se enmarca dentro de la geografía subjetiva. A través de un estudio de caso se observa cómo las experiencias personales de los niños y niñas influyen en la construcción y en la deformación del espacio geográfico. Este documento puede servir de orientación para poner en práctica un proyecto de innovación, pues se ofrece una secuencia de actividades donde se trabaja el conocimiento y la autonomía espacial. This work is part of subjective geography. A case study shows how children's personal experiences influence the construction and deformation of geographic space. This may provide guidance to implement an innovation project. The series of activities which are proposed wor…

Mantenimiento temporal de la equidad horizontal en el sistema de financiación autonómica.

2011

Este trabajo propone un mecanismo de actualización del sistema de financiación autonómica que mantiene la equidad horizontal a lo largo del tiempo, al que se denomina mecanismo de las “Relatividades Constantes”. En este contexto, el trabajo examina críticamente el concepto de necesidades de gasto utilizado en la financiación autonómica española, propone una definición operativa del mismo, e identifica un índice global de necesidades que replica la distribución de recursos normativos del nuevo modelo de financiación. Utilizando este índice global, el artículo ilustra empíricamente el mecanismo de actualización propuesto y compara los resultados con los obtenidos a partir de la regla existent…

Genome rearrangement distances and gene order phylogeny in gamma-Proteobacteria.

2005

Genome rearrangements have been studied in 30 gamma-proteobacterial complete genomes by comparing the order of a reduced set of genes on the chromosome. This set included those genes fulfilling several characteristics, the main ones being that an ortholog was present in every genome and that none of them had been acquired by horizontal gene transfer. Genome rearrangement distances were estimated based on either the number of breakpoints or the minimal number of inversions separating two genomes. Breakpoint and inversion distances were highly correlated, indicating that inversions were the main type of rearrangement event in gamma-Proteobacteria. In general, the progressive increase in seque…

Segregación por género y Formación Profesional : aportaciones al debate sobre la situación actual

2020

En el presente texto se presenta un estudio sociológico que revisa la situación actual de la segregación de género en la Formación Profesional. Ésta es una etapa educativa con un marcado sesgo de género que se observa en el hecho que, de las 26 Familias Profesionales existentes, hay 15 claramente masculinizadas mientras que el alumnado es mayoritariamente femenino en cinco, lo que refleja la desigualdad existente también en los entornos profesionales a los que estos estudios conducen. A partir del análisis de fuentes secundarias, se observa cómo, en general, el peso porcentual de las alumnas desciende en todos los niveles de FP, aunque en los últimos cursos su peso se mantiene prácticamente…

2021

Abstract. Lignin oxidation products (LOPs) are widely used as vegetation proxies in climate archives, such as sediment and peat cores. The total LOP concentration, Σ 8, provides information on the abundance of vegetation, while the ratios C / V and S / V of the different LOP groups also provide information on the type of vegetation. Recently, LOP analysis has been successfully applied to speleothem archives. However, there are many open questions concerning the transport and microbial degradation of LOPs on their way from the soil into the cave system. These processes could potentially alter the original source-dependent LOP signals, in particular the C / V and S / V ratios, and thus compli…

The use of constructed wetlands for the treatment of agro-industrial wastewater – A case study in a dairy-cattle farm in Sicily (Italy)

2017

Wastewaters generated by agro-industrial operations often represent an unsustainable cost for farms due to high wastewater-treatment management costs. The wastewater produced by dairies, wineries or oil mills may vary in quantity and in quality depending on the time of the year, making the use of a conventional treatment system less efficient and more costly. Constructed wetland systems (CWs) provide low-cost technology and an efficient solution in the treatment of a number of wastewaters from agriculture. They are simple to build, have low maintenance costs and are sustainable compared to conventional treatment methods. This paper shows a case study that was carried out on a dairy-cattle f…

Growth of Arundo donax L. and Cyperus alternifolius L. in a horizontal subsurface flow constructed wetland using pre-treated urban wastewater - a cas…

2013

Constructed wetland systems for wastewater treatment represent an excellent opportunity for the recovery of water resources in those areas subject to prolonged periods of water shortage. This paper presents a study of the efficiency of a pilot horizontal subsurface flow system using pre-treated urban wastewater from a small town in the West of Sicily. The pilot system had a total surface area of 100 m2 with two units. Unit A was planted with Arundo donax L. and unit B with Cyperus alternifolius L. The HLR was 10 cm d-1. The main objectives of research were to evaluate the growth and biomass yield of two macrophytes and determine the removal efficiency of physical-chemical and microbiologica…

Poikkihallinnollisuus opinto- ja uraohjauksen hallintapuheessa

2022

Horizontal Governance and Governance Discourses in Career Guidance and Counselling in Finland In the 2000s, horizontal governance has become a growing mode of public sector governance. In this study, we examined horizontal governance in the context of career guidance and counselling in Finland. Our empirical research data consisted of ten (10) thematic interviews with public sector officials and other experts working in the governance of guidance at the national level. Our research aim was to scrutinize how the three ideal-types in public sector governance – bureaucratic (Weberian), new public management, and new public governance – were manifested in the informants’ discourses. Our results…