Seminar of Sebastián Lozano

10 October, 2019
12:30 pma1:30 pm

Speaker: Sebastián Lozano (University of Sevilla)

Title: “DEA analysis of network processes (Network DEA): Models and applications”

Date: Thursday, October 10, 12:30 a.m.

Localication: CIO Seminar Room (Torretamarit Building)

Abstract. Conventional data wrap analysis (DEA) considers the production process as a black box, that is, as a unique process that performs the transformation of inputs into outputs. There are, however, DEA approaches that open that box and distinguish within it different threads, each with its own inputs and outputs, and usually with intermediate product flows between the threads. A fundamental characteristic, then, of this type of Network DEA (NDEA) approaches is that each thread has its own technology. DEA models, both multiplier and envelope type, can be formulated for these types of situations. There are variants regarding the notation used as well as the treatment of intermediate products. There are radial approaches, directional distance function (DDF), Network SBM, etc. You can also consider shared inputs and undesirable outputs. With regard to applications, these are numerous and range from the transport sector to the banking sector, hotel sector, sports, etc.

Seminar of Antonino Laudani

26 September, 2019
11:00 ama12:00 pm

Speaker: Antonino Laudani (Università Degli Studi Roma Tre)

Title: “Mathematics vs Photovoltaic systems”

Date: Thursday, September 26, 11:00 a.m.

Localication: Classrooms 0.1 and 0.2 of the CIO (Torretamarit Building)

Abstract. All the field of engineering are fullfilled by mathematic approaches and this is particularly true for the fields of electrical and electronic engineering. On the other hand, it is also true that in the case of Photovoltaic systems (with this term I indicate all the Photovoltaic objects from the small devices to the large power plants), there are still a lot of things that mathematicians can do to improve the analysis, the modelling and the design of them. In this talk, I will discuss the contribution given by mathematic techniques (from Lambert function to Least Square Problem solution, etc) applied to photovoltaics and their open problems. Mathematicians together with electrical and electronic enginers and computer science scientists can provide a fundamental contribution in the research advance.