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Università della Svizzera italiana

Identity reinforcement or risky organizational change? : Category spanning in humanitarian projects

Kooijman, Eva A. P. ; Beck, Nikolaus

In: Administrative sciences, 2021, vol. 11, no. 4, p. 17

In this study, we investigate the consequences of organizational change that consist of adding new categories to the portfolio of humanitarian organizations. Our aim is to discern differences in these consequences between specialist and generalist organizations. Previous research has shown that spanning categories lead to disadvantages in the evaluation of organizations by audience members in...

Università della Svizzera italiana

Managing the trade-off between groundwater resources and large-scale agriculture : the case of pistachio production in Iran

Akhavan, Ali ; Gonçalves, Paulo

In: System dynamics review, 2021, vol. 37, no. 2-3, p. 155-196

Benefiting from historically favorable conditions (e.g. low costs, fertile land, and abundant water), pistachio producers in Rafsanjan, Iran, have flourished, with pistachio orchards and production growing dramatically since the 1970s. Today, however, the enormous increase in water consumption associated with pistachio production has severely depleted groundwater aquifers, causing widespread...

Università della Svizzera italiana

A new constructive heuristic driven by machine learning for the traveling salesman problem

Mele, Umberto Junior ; Gambardella, Luca Maria ; Montemanni, Roberto

In: Algorithms, 2021, vol. 14, no. 9, p. 25

Recent systems applying Machine Learning (ML) to solve the Traveling Salesman Problem (TSP) exhibit issues when they try to scale up to real case scenarios with several hundred vertices. The use of Candidate Lists (CLs) has been brought up to cope with the issues. A CL is defined as a subset of all the edges linked to a given vertex such that it contains mainly edges that are believed to be...

Università della Svizzera italiana

Joint desirability foundations of social choice and opinion pooling

Casanova, Arianna ; Miranda, Enrique ; Zaffalon, Marco

In: Annals of Mathematics and Artificial Intelligence, 2021, no. 89, p. 965–1011

We develop joint foundations for the fields of social choice and opinion pooling using coherent sets of desirable gambles, a general uncertainty model that allows to encompass both complete and incomplete preferences. This leads on the one hand to a new perspective of traditional results of social choice (in particular Arrow’s theorem as well as sufficient conditions for the existence of an...

Consortium of Swiss Academic Libraries

Bulk-Robust combinatorial optimization

Adjiashvili, David ; Stiller, Sebastian ; Zenklusen, Rico

In: Mathematical Programming, 2015, vol. 149, no. 1-2, p. 361-390

Consortium of Swiss Academic Libraries

Robust Bayesian model averaging for the analysis of presence-absence data

Corani, Giorgio ; Mignatti, Andrea

In: Environmental and Ecological Statistics, 2015, vol. 22, no. 3, p. 513-534

Università della Svizzera italiana

From blue to steel-collar jobs : The decline in employment gaps?

Lerch, Benjamin

The adoption of labor-replacing technologies has already displaced thousands of workers in the US. In this paper, I analyze how the adverse effects of the implementation of robots in firms’ production processes are spreading among the population and how they are shaping the composition of labor markets. Exploiting exogenous variation in robot exposure across local labor markets and over time,...

Università della Svizzera italiana

Natural disasters and electoral outcomes

Masiero, Giuliano ; Santarossa, Michael

In: European Journal of Political Economy, 2021, vol. 67, p. 19 p

Natural disasters are good examples of catastrophic events that may affect vote decisions. In this study, we analyze how the occurrence of earthquakes changes voters' behavior at municipal elections and which channels drive this change, focusing in particular on the role of media exposure. We exploit data from 13,338 municipal electoral cycles where incumbents seek reelection between 1993 and...

Università della Svizzera italiana

Security of supply and the energy transition : the households' perspective investigated through a discrete choice model with latent classes

Motz, Alessandra

In: Energy economics, 2021, vol. 97, no. May, p. 16 p

A consumer-centric, market-based approach to the security of electricity supply has been recognized as increasingly important in the context of the energy transition. Nonetheless, there is no clear-cut evidence regarding the drivers of consumer preferences toward security and the perceived trade-offs between security and sustainability. Using stated preference data, we develop a discrete...