Search results for "RAM"
showing 10 items of 35643 documents
Analysis of the energy balance closure over a FLUXNET boreal forest in Finland
2010
Abstract. The imbalance in the surface energy budget, when using eddy-covariance techniques to measure turbulent fluxes, is still an unresolved problem. Important progresses have been reported in recent years identifying potential reasons for this lack of energy balance closure. In this paper we focus on the data collected in a FLUXNET boreal forest site in Sodankylä, Finland. Using one month half-hourly data, an average Energy Balance Ratio (EBR) of 0.72 is obtained. The inclusion of the heat storage terms in the energy budget yields an improvement of about 6% in the total closure. The sensitivity of the energy balance closure to the turbulence intensity is analysed in terms of the frictio…
An Approach to Delineate Groundwater Bodies at Risk: Seawater Intrusion in Liepāja (Latvia)
2018
Groundwater quality in coastal areas is frequently affected by seawater intrusion as a consequence of intensive water consumption. To achieve “good chemical status” of a groundwater body according to Water Framework Directive the effects of saline or other intrusions should not be observed. Groundwater pumping in former decades has caused a significant seawater intrusion into confined aquifer in Liepāja and has led to deterioration of relatively wide coastal area of the third largest city in Latvia. However, the area affected by seawater intrusion is a small part of groundwater body F1 which overall chemical status is good. Thus, no specific management measures have been applied to explore …
I ferri dell'Opra. Il teatro delle marionette siciliane
2013
Abstract – IT L'Opera dei pupi siciliana costituisce una preziosa testimonianza dell'intricata eredità storico-culturale della Sicilia. Le proclamazioni dell'Unesco e l'attenzione rivolta alle modalità di patrimonializzazione delle pratiche tradizionali, hanno favorito lo sviluppo di un'analisi, sia di tipo diacronico che sincronico, con una prospettiva antropologica tesa ad indagare le strategie di invenzione e costruzione della tradizione e della sua problematizzazione con particolare riferimento al concetto di “memoria culturale”. È con queste premesse che il presente lavoro si pone come obbiettivo di analizzare le strutture fondamentali, la grammatica e la sintassi dello spettacolo di O…
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…
Hoivatyön ajalliset kehykset ja rytmiristiriidat
2012
Artikkelissa kysytään, miten ajallisten kehysten muutokset vaikuttavat terveydenhuollon ja sosiaalialan hoivatyöntekijöiden toimijuuteen. Ajallisten orientaatioiden ja toimijuuden välisiä suhteita analysoidaan inhimillisen toiminnan ajallisia ulottuvuuksia koskevien sosiologisten teorioiden, hoivatyön käytäntöjen ja hoivatyöntekijöiden kertomien kokemusten näkökulmasta. Aineistona on 25 sosiaalialan ja terveydenhuollon työntekijöiden teemahaastattelua. Haastateltavien kertomukset kiireen lisääntymisestä ja jatkuvasta rutiinien rikkoutumisesta ovat aineistossa hyvin yleisiä. Hyvinvointivaltion uudelleenorganisoinnin tuloksena vahvistunut taloudellis-hallinnollinen aikakehys edellyttää hoivat…
Antonio Gramscin hegemonian käsitteen relevanssi kasvatustieteelliselle tutkimukselle
2017
Artikkelimme käsittelee Antonio Gramscin käsitteistön relevanssia kasvatustieteelliselle tutkimukselle. Aineistonamme toimii kolme Gramscin hegemonian käsitettä hyödyntävää tutkielmaa. Pyrkimyksemme on näiden tutkimusten avulla antaa virikkeitä ja käsitteellisiä välineitä suomalaiselle kriittisen kasvatustieteen tutkimukselle. Tässä suhteessa artikkeli on luonteeltaan teoreettinen katsaus kasvatustieteellisen ja opettajuuden tutkimuksen kentälle. Uusliberaalin hegemonian käytänteiden tarkasteleminen kasvatuksen ja koulutuksen kentällä auttaa löytämään Gramscin käsitteistön sovellusmahdollisuuksia myös suomalaisessa kriittisen kasvatustieteen tutkimuksessa. Oletuksena on, että artikkelimme t…
Optimal Solutions for the Use of Sewage Sludge on Agricultural Lands
2021
The use of sewage sludge in agriculture decreases the pressure on landfills. In Romania, massive investments have been made in wastewater treatment stations, which have resulted in the accumulation of important quantities of sewage sludge. The presence of these sewage sludges coincides with large areas of degraded agricultural land. The aim of the present article is to identify the best technological combinations meant to solve these problems simultaneously. Adapting the quality and parameters of the sludge to the specificity of the land solves the possible compatibility problems, thus reducing the impact on the environment. The physico-chemical characteristics of the fermented sludge were …
Optical Methods for River Monitoring: A Simulation-Based Approach to Explore Optimal Experimental Setup for LSPIV
2021
Recent advances in image-based methods for environmental monitoring are opening new frontiers for remote streamflow measurements in natural environments. Such techniques offer numerous advantages compared to traditional approaches. Despite the wide availability of cost-effective devices and software for image processing, these techniques are still rarely systematically implemented in practical applications, probably due to the lack of consistent operational protocols for both phases of images acquisition and processing. In this work, the optimal experimental setup for LSPIV based flow velocity measurements under different conditions is explored using the software PIVlab, investigating perfo…
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 …
Comparative Analyses between the Zero-Inertia and Fully Dynamic Models of the Shallow Water Equations for Unsteady Overland Flow Propagation
2018
The shallow water equations are a mathematical tool widely applied for the simulation of flow routing in rivers and floodplains, as well as for flood inundation mapping. The interest of many researchers has been focused on the study of simplified forms of the original set of equations. One of the most commonly applied simplifications consists of neglecting the inertial terms. The effects of such a choice on the outputs of the simulations of flooding events are controversial and are an important topic of debate. In the present paper, two numerical models recently proposed for the solution of the complete and zero-inertia forms of the shallow water equations, are applied to several unsteady f…