Ecoturismo in Europa: metodologie per l\u2019eccellenza

L\u2019ecoturismo \ue8 un segmento che presenta forti potenzialit\ue0 per indirizzare l\u2019intero comparto turistico nella direzione della conservazione della natura, della Corporate Social Responsibility e dello sviluppo sostenibile. Per il raggiungimento di tale complessa sfida, \ue8 fondamentale che le organizzazioni impegnate nella filiera ecoturistica sviluppino un approccio sistemico riguardo l\u2019organizzazione, il management e il processo strategico. Per la valutazione dell\u2019efficacia di un sistema ecoturistico, \ue8 essenziale sviluppare una riflessione sulle varie metodologie per la ricognizione delle esperienze di successo

I parchi come laboratori di sviluppo responsabile: il caso Asinara

L’Asinara rappresenta un “locum unicum” nel Mediterraneo Nord Occidentale. Il carattere di unicità, se valorizzato adeguatamente secondo i parametri nello sviluppo responsabile, può costituire una fonte di vantaggio competitivo, nonché il motore trainante per lo sviluppo dell’Area Vasta che si affaccia sul Golfo dell’Asinara. L’istituzione dell’area protetta, e dell’organizzazione che la gestisce, è uno strumento potenzialmente capace di conservare l’unicità di questo territorio e farne il perno per una strategia di sviluppo turistico responsabile. Dotare l’organizzazione pubblica che gestisce l’area protetta di idonee risorse e competenze potrebbe significare farne un ente propulsore e garante di responsabilità sociale a livello sistemico. L’ente parco potrebbe facilitare l’identificazione e la condivisione a livello locale di una vision sistemica, ovvero aggregare attori che creino un “cultural e visionary network” trainato dall’obiettivo di fare dell'Asinara un laboratorio di sviluppo responsabile per l’area vasta in cui si trova inserita e u riferimento importante per altre località costiere sarde e del Mediterraneo Nord Occidentale più in generale

Optimal Trading Execution with Nonlinear Market Impact: An Alternative Solution Method

We consider the optimal trade execution strategies for a large portfolio of single stocks proposed by Almgren (2003). This framework accounts for a nonlinear impact of trades on average market prices. The execution strategy of Almgren (2003) is based on the assumption that no shares per unit of time are trade at the beginning of the period. We use a general solution method that accomodates the case of positive initial trades. Our results are twofold. First of all, we show that the problem admits a solution with no trading in the opening period only if additional parametric restrictions are imposed. Second, with positive initial trading, the optimal execution time depends on trading activity in the initial period.

Naturalness and Dark Matter Properties of the BLSSM

In this report, we compare the naturalness and Dark Matter (DM) properties of the Minimal Supersymmetric Standard Model (MSSM) and the $B-L$ Supersymmetric Standard Model (BLSSM), with universality in both cases. We do this by adopting standard measures for the quantitative analysis of the Fine-Tuning (FT), at both low (i.e. supersymmetric (SUSY)) and high (i.e. unification) scales. We will see a similar level of FT for both models in these scenarios, with a slightly better FT for the BLSSM at SUSY scales and MSSM at Grand Unification Theory (GUT) scales. When including DM relic constraints, we drastically confine the MSSM's parameter space, whereas we still find a large parameter space available for the non-minimal scenario.Comment: Prepared for proceedings for DIS2017, talk presented by Simon Kin

Prospects for Sneutrino Dark Matter in the BLSSM

The $(B-L)$ Supersymmetric Standard Model (BLSSM) motivates several Dark Matter (DM) candidates beyond the Minimally Supersymmetric Standard Model (MSSM). We assess the comparative naturalness of the two models and discuss the potential detection properties of a particular candidate, the Right-Handed (RH) sneutrino.Comment: Prepared for proceedings for La Thuile 2018, talk by Simon Kin

Sneutrino Dark Matter in the BLSSM

In the framework of the $(B-L)$ Supersymmetric Standard Model (BLSSM), we assess the ability of ground and space based experiments to establish the nature of its prevalent Dark Matter (DM) candidate, the sneutrino, which could either be CP-even or -odd. Firstly, by benchmarking this theory construct against the results obtained by the Planck spacecraft, we extract the portions of the BLSSM parameter space compliant with relic density data. Secondly, we show that, based on current sensitivities of the Fermi Large Area Telescope (FermiLAT) and their future projections, the study of high-energy $\gamma$-ray spectra will eventually enable us to extract evidence of this DM candidate through its annihilations into $W^+W^-$ pairs (in turn emitting photons), in the form of both an integrated flux and a differential energy spectrum which cannot be reconciled with the assumption of DM being fermionic (like, e.g., a neutralino), although it should not be possible to distinguish between the scalar and pseudoscalar hypotheses. Thirdly, we show that, while underground direct detection experiments will have little scope in testing sneutrino DM, the Large Hadron Collider (LHC) may be able to do so in a variety of multi-lepton signatures, with and without accompanying jets (plus missing transverse energy), following data collection during Run 2 and 3.Comment: 16 pages, 8 figure

Supersymmetric Gauged B-L Model of Dark Matter and Fine Tuning

We investigate how the Fine-Tuning (FT) in the B-L Supersymmetric Standard Model (BLSSM) compares to the Minimally Supersymmetric Standard Model (MSSM), where both models have universality. This is done for two scales: both low (i.e. collider) and high (i.e. Grand Unified Theory (GUT)) scales. We see this is similar for both models and the two scale regimes. We also study the possible Dark Matter (DM) candidates each model offers in a realistic scenario satisfying relic density constraints. Our findings are that whilst the parameter space for the single MSSM DM candidate is severely constrained, the BLSSM offers multiple candidates in a much wider region.Comment: Prepared for proceedings for EPS-HEP 2017, talk presented by Simon Kin

A Next-to-Leading-Order Study of Dihadron Production

The production of pairs of hadrons in hadronic collisions is studied using a next-to-leading-order Monte Carlo program based on the phase space slicing technique. Up-to-date fragmentation functions based on fits to LEP data are employed, together with several versions of current parton distribution functions. Good agreement is found with data for the dihadron mass distribution. A comparison is also made with data for the dihadron angular distribution. The scale dependence of the predictions and the dependence on the choices made for the fragmentation and parton distribution functions are also presented. The good agreement between theory and experiment is contrasted to the case for single $\pi^0$ production where significant deviations between theory and experiment have been observed.Comment: 22 pages, 15 figures; 3 references added, one figure modified for clarit