Search results for "Resource management"
showing 10 items of 1491 documents
Joint Topology and Radio Resource Optimization for Device-to-Device Based Mobile Social Networks
2018
In this paper, we consider a joint topology and radio resource optimization for device-to-device (D2D) based mobile social networks. The considered social network is an interest based which is modeled as a d -intersection binomial random graph. The Radio network is also modeled as a random graph where an edge between any two distinct nodes is activated with a certain probability that is equivalent to the probability of exceeding a certain signal to interference ratio for that link. The entire network is then modeled as an intersection graph between the social and radio induced graphs. Thereafter, network topology is optimized such that enabled social edges satisfy certain network connectivi…
Koncepcja urban resilience : narzędzie strategicznej diagnozy i monitoringu miast
2015
Celem artykułu jest prezentacja propozycji metodyki badawczej dotyczącej oceny prężności miejskiej, w tym jej wstępna weryfikacja dla wybranych miast w Polsce. Uzupełnienie w tym zakresie stanowi sformułowanie wniosków odnoszących się do zastosowania analizowanej metodyki badawczej w procesie strategicznej diagnozy i monitoringu miast. Proponowana metodyka oceny prężności miejskiej zakłada, że miasto stanowi otwarty system adaptacyjny, składający się z atrybutów prężności i wrażliwości. Monitorowanie ich wartości jest elementem diagnozy strategicznej prowadzącym do identyfikacji działań wzmacniających prężność miasta.
System Times and Channel Availability for Secondary Transmissions in CRNs: A Dependability Theory based Analysis
2017
[EN] Reliability is of fundamental importance for the performance of secondary networks in cognitive radio networks (CRNs). To date, most studies have focused on predicting reliability parameters based on prior statistics of traffic patterns from user behavior. In this paper, we define a few reliability metrics for channel access in multichannel CRNs that are analogous to the concepts of reliability and availability in classical dependability theory. Continuous-time Markov chains are employed to model channel available and unavailable time intervals based on channel occupancy status. The impact on user access opportunities based on channel availability is investigated by analyzing the stead…
Religione, benessere e job satisfaction: quale nesso possibile?
2022
Il presente contributo nasce dall'esigenza di approfondire il possibile nesso tra la dimensione del "sentire" religioso e quella dell'"agire" lavorativo, nel tentativo di (ri)portare la spiritualità all'interno del dibattito sociologico sul lavoro. Infatti, sebbene nel corso degli ultimi anni la letteratura sociologica ha mostrato come la qualità del lavoro sia un concetto multidimensionale e dinamico, la dimensione religiosa e/o spirituale del lavoratore non ha trovato adeguato spazio nella definizione di qualità del lavoro o negli interventi a suo favore. Attraverso la differenziazione dei concetti quali religiosità, spiritualità e soddisfazione sul lavoro, si giunge alla conclusione che …
Combining the FAO56 agrohydrological model and remote sensing data to assess water demand in a Sicilian irrigation district
2020
<p>Agricultural water use in irrigated areas plays a key role in the Mediterranean regions characterized by semi-arid climate and water shortage. In the face of optimizing irrigation water use, farmers must revise their irrigation practices to increase the drought resilience of agricultural systems and to avoid severe damages in agro-ecosystems. In this direction, during the last decades, the research has been focused on mathematical models to simulate the process of driving mass transport and energy exchanges in the Soil-Plant-Atmosphere system.</p><p>The objective of the paper was to test the suitability of the combination of FAO56 agro-hydrologi…
Managing Greenhouse Gas Emissions for Airport Inventories: An Overview
2011
For some years now, problems relating to gas emissions that affect climate and result from human activities have assumed a global dimension of large importance. The climate is, indeed, influenced by the concentrations of some pollutants in the atmosphere; these pollutants trap the long wave radiation emitted by the Earth and alter the energy balance, causing an accentuation of the natural greenhouse effect. In this view an inventory of greenhouse gases can become the benchmark against which to measure the achievement of quantitative targets set at the political level in the fight against climate change. Contrary to a general inventory of emissions related with air quality objectives and loc…
La representación sindical en España: cobertura y límites
2018
El objetivo de este artículo es realizar una aproximación al sistema de representación unitaria en la empresa en España a partir de una explotación estadística de los datos de las elecciones sindicales. Se trata de conocer aspectos como el alcance de la representación unitaria, la participación de los asalariados y la audiencia electoral de los sindicatos, con el objetivo de delimitar su representatividad y legitimidad. Nuestro trabajo se centra en el análisis de los tres últimos períodos electorales (2003-2007, 2007-2012 y 2012-2015), con objeto de evaluar el impacto del ciclo económico sobre la representación de los asalariados. The objective of this article is to make an approach to the …
Components of software development risk: how to address them? A project manager survey
2000
Software risk management can be defined as an attempt to formalize risk oriented correlates of development success into a readily applicable set of principles and practices. By using a survey instrument we investigate this claim further. The investigation addresses the following questions: 1) What are the components of software development risk? 2) how does risk management mitigate risk components, and 3) what environmental factors if any influence them? Using principal component analysis we identify six software risk components: 1) scheduling and timing risks, 2) functionality risks, 3) subcontracting risks, 4) requirements management, 5) resource usage and performance risks, and 6) person…
Turning the tide: Registered nurses' job withdrawal intentions in a Finnish university hospital
2012
Orientation: Given the global shortage of registered nurses, it is important to investigate the intentions for job withdrawal of nurses, and resolve these, in order to retain nurses in the field. Research purpose: The objective was to examine the intentions for job withdrawal of ageing and younger nurses, and the antecedents of these intentions, with special reference to job control and perceived development opportunities. The age of 45 was adopted as a starting point when referring to ageing employees. Motivation for the study: Different forms of job withdrawal have rarely been studied together and associated. Research design, approach and method: A quantitative study was applied with logi…
Soil erosion modelling: a global review and statistical analysis
2021
40 Pags.- 10 Figs.- 2 Tabls.- Suppl. Informat. The definitive version is available at: https://www.sciencedirect.com/science/journal/00489697