Search results for "rice"
showing 10 items of 2331 documents
Evolutionary Game Dynamics for Collective Decision Making in Structured and Unstructured Environments
2017
Abstract For a large population of players we consider a collective decision making process with three possible choices: option A or B or no option. The more popular option is more likely to be chosen by uncommitted players and cross-inhibitory signals can be sent to attract players committed to a different option. This model originates in the context of honeybees swarms, and we generalise it to accommodate other applications such as duopolistic competition and opinion dynamics. The first contribution is an evolutionary game model and a corresponding new game dynamics called expected gain pairwise comparison dynamics explaining how the strategic behaviour of the players may lead to deadlock…
Robust dynamic comfort modeling for motorcycle riding
2015
Comfort modeling is considered a prerequisite in motorcycle design, primarily to address safety concerns and to position the product on the market. However, a comprehensive methodology for comfort modeling during the earliest development phases of a motorcycle model is still missing. Anthropometrical variation is the main noise factor to consider in comfort modeling in relation to the unavoidable variability of body segments. However, comfort is a subjective concept influencing riders' choice of motorcycle model. This work is a generalization of the robust ergonomic design methodology aimed at designing products whose ergonomic performance is insensitive to anthropometrical variation. This …
Robust dynamic comfort modelling for motorcycle riding
2015
Comfort modeling is considered a prerequisite in motorcycle design, primarily to address safety concerns and to position the product on themarket. However, a comprehensive methodology for comfort modeling during the earliest development phases of a motorcycle model is still missing. Anthropometrical variation is the main noise factor to consider in comfort modeling in relation to the unavoidable variability of body segments. However, comfort is a subjective concept influencing riders’ choice of motorcycle model. This work is a generalization of the robust ergonomic design methodology aimed at designing products whose ergonomic performance is insensitive to anthropometrical variation. This w…
L'orizzonte del senso. Verità e mondo in Bloch, Merleau-Ponty, Paci
2005
. Il libro raccoglie e rielabora gli studi composti tra il 2003 e il 2005. Il senso e l'orizzonte costituiscono il filo conduttore dei tre percorsi critici qui proposti. Essi sono accomunati dal taglio fenomenologico dell'analisi e dall'intento di focalizzare il movimento di pensiero che si snoda negli itinerari speculativi dei pensatori rivisitati, nei quali la verità si incontra e si scontra prassicamente col mondo, finendo comunque per sopravanzarlo. Ciò avviene sia nella filosofia della speranza di Ernst Bloch, sia nell'esistenzialismo di Maurice Merleau-Ponty, sia infine nel relazionismo di Enzo Paci. La novità dell'intepretazione di Bloch è costituita dall'individuazione di due differ…
Rec. a Helen Van Noorden, Playing Hesiod. The ‘Myth of the Races’ in Classical Antiquity, Cambridge, Cambridge University Press, 2015, x+350 p., 72 l…
2017
Recensione a Helen Van Noorden, Playing Hesiod. The ‘Myth of the Races’ in Classical Antiquity, Cambridge 2015
When do Improved Covariance Matrix Estimators Enhance Portfolio Optimization? An Empirical Comparative Study of Nine Estimators
2010
The use of improved covariance matrix estimators as an alternative to the sample estimator is considered an important approach for enhancing portfolio optimization. Here we empirically compare the performance of 9 improved covariance estimation procedures by using daily returns of 90 highly capitalized US stocks for the period 1997-2007. We find that the usefulness of covariance matrix estimators strongly depends on the ratio between estimation period T and number of stocks N, on the presence or absence of short selling, and on the performance metric considered. When short selling is allowed, several estimation methods achieve a realized risk that is significantly smaller than the one obtai…
Feasibility Studies for Water Reuse Projects: Economic Valuation of Environmental Benefits
2010
Water reuse is emerging as a promising alternative because it enables water resources to be increased and lowers pollution levels by reducing wastewater. In recent decades, significant technological progress has been made in the field of wastewater regeneration; and project feasibility is now mostly subject to just economic assessment. However, the economic aspect is the least addressed aspect of research into water reuse. This is because private costs are generally considered while the external effects are relegated to a series of statements about the advantages of water reuse. Methodologies used to analyze the economic feasibility of these projects usually focus on internal costs. As a re…
The force interpretation of evolutionary theory: scope and limits
2016
La teoría evolutiva suele entenderse como una teoría causal donde las causas principales del cambio evolutivo son identificadas con la selección natural, la deriva genética, la mutación y la migración. Siguiendo este razonamiento, muchos biólogos y filósofos de la biología han estructurado la teoría evolutiva de forma análoga a la mecánica newtoniana, entendiendo la teoría evolutiva como una teoría de fuerzas. El punto clave en el que se sustenta la analogía, es que la estructura de la mecánica newtoniana permite identificar los elementos causales del sistema de interés. De esta manera, la teoría evolutiva encuentra una útil imagen explicativa del fenómeno evolutivo, estructurándose como un…
Export Price Discrimination in Europe and Exchange Rates
2002
The paper studies pricing-to-market behavior on a wide range of disaggregated European Union exports to OECD countries. The sample allows better identification of products for which such behavior is pervasive. The results suggest that the degree of markup adjustment in response to exchange rate changes is similar across destination markets. The evidence of pricing-to-market across source countries ranges from 40% (Netherlands) to 63% (Germany) of the products in the sample, except for the United Kingdom, where there is remarkably little evidence of it. However, formal comparisons across source countries by product do not usually reveal differences in behavior.
What determines a positive attitude towards natural food products? An expectancy theory approach.
2021
Natural food products are becoming increasingly popular worldwide due to their health and environmental benefits. However, these products' increasing anecdotal popularity has not translated into their widespread adoption; in fact, demand for natural food products remains confined to a relatively small segment of consumers. Despite this, little is known about the facilitators and inhibitors of favourable attitude of consumers towards these products. Recognising this gap, our study employed the theoretical lens of expectancy theory to investigate these factors. Through an extensive review of the pro-environmental consumption literature, we identified four facilitating and inhibiting factors: …