Time filter

Source Type

Bergamo, Italy

The Bergamo University is a university located in Bergamo, Italy. It was founded in 1968 and is organized in 5 Faculties. Wikipedia.

Fasso A.,University of Bergamo
Stochastic Environmental Research and Risk Assessment | Year: 2013

This paper presents a general spatio-temporal model for assessing the air quality impact of environmental policies which are introduced as abrupt changes. The estimation method is based on the EM algorithm and the model allows to estimate the impact on air quality over a region and the reduction of human exposure following the considered environmental policy. Moreover, impact testing is proposed as a likelihood ratio test and the number of observations after intervention is computed in order to achieve a certain power for a minimal reduction. An extensive case study is related to the introduction of the congestion charge in Milan city. The consequent estimated reduction of airborne particulate matters and total nitrogen oxides motivates the methods introduced while its derivation illustrates both implementation and inferential issues. © 2013 Springer-Verlag Berlin Heidelberg. Source

Kalchschmidt M.,University of Bergamo
International Journal of Production Economics | Year: 2012

The paper focuses on best practices in demand forecasting. Literature has addressed the best practice concept under three different perspectives. According to the universalistic perspective, some forecasting practices are universally effective regardless of the context in which companies operate. In the contingent perspective, the effectiveness of forecasting practices depends on the specific kind of context each company faces. A third perspective is the configurational one, which asserts that there are synergistic effects among best practices. In this work, we compare these different perspectives by designing and testing different sets of propositions that underline the aforementioned perspectives. Analysis is conducted by collecting data of more than 500 companies in different countries via the 4th edition of the Global Manufacturing Research Group (GMRG IV) questionnaire. The results demonstrate that each perspective has some empirical support. © 2012 Elsevier B.V. All rights reserved. Source

Garattini R.,University of Bergamo | Majumder B.,Indian Institute of Technology Gandhinagar
Nuclear Physics B | Year: 2014

We compute the Zero Point Energy (ZPE) induced by a naked singularity with the help of a reformulation of the Wheeler-DeWitt equation. A variational approach is used for the calculation with Gaussian Trial Wave Functionals. The one loop contribution of the graviton to the ZPE is extracted keeping under control the UltraViolet divergences by means of a distorted gravitational field. Two examples of distortion are taken under consideration: Gravity's Rainbow and Noncommutative Geometry. Surprisingly, we find that the ZPE is no more singular when we approach the singularity. © 2014. Source

Garattini R.,University of Bergamo
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2012

In the framework of Hor&caronava-Lifshitz theory, we study the eigenvalues associated with the Wheeler-DeWitt equation representing the vacuum expectation values associated with the cosmological constant. The explicit calculation is performed with the help of a variational procedure with trial wave functionals of the Gaussian type. We analyze both the case with the detailed balanced condition and the case without it. In the case without the detailed balance, we find the existence of an eigenvalue depending on the set of coupling constants (g2, g3) and (g4, g 5, g6), respectively, and on the physical scale. © 2012 American Physical Society. Source

Lazaroiu G.C.,Polytechnic University of Bucharest | Roscia M.,University of Bergamo
Energy | Year: 2012

Nowadays, the large and small districts are proposing a new city model, called " the smart city", which represents a community of average technology size, interconnected and sustainable, comfortable, attractive and secure. The landscape requirements and the solutions to local problems are the critical factors. The cities consume 75% of worldwide energy production and generate 80% of CO 2 emissions. Thus, a sustainable urban model, " the smart city", is sustained by the European Commission. In this paper, a model for computing " the smart city" indices is proposed. The chosen indicators are not homogeneous, and contain high amount of information. The paper deals with the computation of assigned weights for the considered indicators. The proposed approach uses a procedure based on fuzzy logic and defines a model that allows us to estimate " the smart city", in order to access European funding. The proposed innovative system results in a more extended comprehension and simple use. Thus, the model could help in policy making process as starting point of discussion between stakeholders, as well as citizens in final decision of adoption measures and best evaluated options. © 2012 Elsevier Ltd. Source

Discover hidden collaborations