Search results for "DEMAND"

Physical demands during 3×3 international male and female basketball games are partially impacted by competition phase but not game outcome

2021

Despite the increased popularity and number of international competitions for 3 × 3 basketball, the precise physical demands of this sport are not well described. Therefore, this study aimed to quantify the physical demands of 3 × 3 basketball games according to game outcome and competition phase. Following an observational design, video footage from 27 games were analysed from 104 international 3 × 3 basketball players (n = 52 male and n = 52 female players) belonging to 26 national teams (n = 13 male and n = 13 female teams) during the 2019 FIBA 3 × 3 World Cup. Manual frame-by-frame time-motion analyses were conducted to determine the relative frequency (n · min−1) and duration (% of liv…

Understanding maritime transport route choice among Irish exporters: A latent class approach

2021

Abstract The reduction in the level of maritime connectivity between Ireland and mainland Europe has been the focus of concern for Irish exporters since the withdrawal of the United Kingdom from the European Union in January 2019. In a post-Brexit scenario, new proposals are being sought to address Ireland's reliance on the UK land-bridge. Policy developments aimed at circumventing the potential negative impact of UK customs checks for Irish exports include the proposals by the European Commission to introduce new direct shipping routes connecting main ports in Ireland with Zeebrugge and Antwerp in Belgium, as well as with Rotterdam in the Netherlands. From a transport policy perspective, f…

Exponential smoothing with covariates applied to electricity demand forecast

2013

Exponential smoothing methods are widely used as forecasting techniques in industry and business. Their usual formulation, however, does not allow covariates to be used for introducing extra information into the forecasting process. In this paper, we analyse an extension of the exponential smoothing formulation that allows the use of covariates and the joint estimation of all the unknowns in the model, which improves the forecasting results. The whole procedure is detailed with a real example on forecasting the daily demand for electricity in Spain. The time series of daily electricity demand contains two seasonal patterns: here the within-week seasonal cycle is modelled as usual in exponen…

Sustainable Mobility Planning in the Tourist Centres: the Estimation of Transport Demand.

2008

This paper on sustainable mobility planning in tourist centers is from the proceedings of 14th international Conference on Urban Transport and the Environment in the 21st Century, which was held in Malta in 2008. The authors focus on estimating the potential non-motorized transport demand and to design the supply of sustainable modes of transportation, including public transit, bicycling and walking. The authors use the tourist area of San Vito Lo Capo, the famous historical and swimming center of Sicily, as a case example. They conducted a stated preference survey in June-July 2006 to evaluate the potential demand of non-motorized transport modes, primarily bicycling, then calibrated a mul…

La demande d'éducation à l'issue de l'enseignement secondaire

1978

Introducing exergy analysis in life cycle assessment: A case study

2018

Life Cycle Assessment (LCA) is a methodology for assessing the potential environmental aspects associated with a product or service along its life cycle. However, in the case of energy technologies, it is suggested that the LCA of a product encompasses also further aspects other than environmental aspects and primary energy calculations. In particular, to optimize the reduction of raw materials during the whole life cycle, it is important to introduce the assessment of the irreversibility, applying the exergy analysis. In this paper, an integrated approach of exergy analysis and LCA is proposed, developing the Life-cycle quality index able to suggest potential exergy inefficiencies and the …

On thermoeconomics of energy systems at variable load conditions: integrated optimization of plant design and operation

2007

Abstract Thermoeconomics has been assuming a growing role among the disciplines oriented to the analysis of energy systems, its different methodologies allowing solution of problems in the fields of cost accounting, plant design optimisation and diagnostic of malfunctions. However, the thermoeconomic methodologies as such are particularly appropriate to analyse large industrial systems at steady or quasi-steady operation, but they can be hardly applied to small to medium scale units operating in unsteady conditions to cover a variable energy demand. In this paper, the fundamentals of thermoeconomics for systems operated at variable load are discussed, examining the cost formation process an…

Bayesian forecasting of demand time-series data with zero values

2013

This paper describes the development of a Bayesian procedure to analyse and forecast positive demand time-series data with a proportion of zero values and a high level of variability for the non-zero data. The resulting forecasts play decisive roles in organisational planning, budgeting, and performance monitoring. Exponential smoothing methods are widely used as forecasting techniques in industry and business. However, they can be unsuitable for the analysis of non-negative demand time-series data with the aforementioned features. In this paper, an unconstrained latent demand underlying the observed demand is introduced into the linear heteroscedastic model associated with the Holt-Winters…

How markets slowly digest changes in supply and demand

2008

In this article we revisit the classic problem of tatonnement in price formation from a microstructure point of view, reviewing a recent body of theoretical and empirical work explaining how fluctuations in supply and demand are slowly incorporated into prices. Because revealed market liquidity is extremely low, large orders to buy or sell can only be traded incrementally, over periods of time as long as months. As a result order flow is a highly persistent long-memory process. Maintaining compatibility with market efficiency has profound consequences on price formation, on the dynamics of liquidity, and on the nature of impact. We review a body of theory that makes detailed quantitative pr…

FAMILY FIRMS: WELL-BEING OF EMPLOYEES AND ENTREPRENEURS. FAMILY RELATIONSHIPS AND WORK-RELATED STRESS

2014

The general aim of the present dissertation is to gain more insight into the phenomenon of family firms, the well-being of employees and entrepreneurs and the role of family relationships at work. These objectives have been pursued by means of three empirical studies presented in the three chapters respectively: Chapter 1 focuses on comparing the employees of family and non-family firms to identify clearly the distinctive features. Chapter 2 focuses on the Job demands-resources model and on the role of the emotional experience as an important variable in attempt to understand whether there is a different pattern of relationships in the model depending on the fact that the people work with o…