1 Contributo su Rivista

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A hybrid metaheuristic for the Knapsack Problem with Forfeits

In this paper, we present a novel hybrid metaheuristic for the Knapsack Problem with Forfeits (KPF). KPF is a recently introduced generalization of the Knapsack Problem. In this variant, a penalty cost incurs whenever both items composing a so-called forfeit pair belong to the solution. Our proposed algorithm, called GA-CG Forfeits, combines the strengths of the Genetic and Carousel Greedy paradigms. In this work, we define the algorithm and compare it with two previously proposed heuristics ...

Machine Learning on Soccer Player Positions

During the last few years, sports analytics has been growing rapidly. The main usage of this discipline is the prediction of soccer match results, even if it can be applied with interesting results in different areas, such as analysis based on the player position information. In this paper, the authors propose an approach aimed to recognize the player position in a soccer match, predicting the specific zone in which the player is located in a specific moment. Similar objectives have not yet b...

Hepatitis B vaccination: universal vaccination of newborn babies and children at 12 years of age versus high risk groups. A comparison in the field

From 1983 to 1993 two anti-hepatitis B vaccinal strategies were adopted in two small towns of Southern Italy at high incidence for HBV infections: Afragola (prevalence of HBsAg carriers of 13.4%) and Frattamaggiore (prevalence of HBsAg carriers of 12.9%). In Afragola, the universal vaccination of infants in their first year of life and adolescents at 12 years of age was carried out, while in Frattamaggiore the selective vaccination of high risk groups of population was introduced. During this...

Catamenial pneumothorax due to solitary localization of diaphragmatic endometriosis

INTRODUCTION: Catamenial pneumothorax (CP) is a spontaneous recurrent pneumothorax occurring inwomen in reproductive age. The etiology of CP has been associated with thoracic endometriosis and isits most common presentation. PRESENTATION OF CASE: A case of right catamenial pneumothorax in a 38 year old woman is presented inwhich three episodes of CP occurred within 72 h of menses in a 6 month period. The patient underwentvideothoracoscopy that revealed a solitary localization of diaphragmatic...

Awake one stage bilateral thoracoscopic sympathectomy for palmar hyperhidrosis: a safe outpatient procedure

OBJECTIVE: To verify the feasibility and compare the results of thoracoscopic sympathectomy under local anaesthesia (LA) and spontaneous breathing vs. general anaesthesia (GA) with one-lung ventilation. METHODS: Two groups of consecutive patients underwent one stage bilateral T2-T3 thoracoscopic sympathectomy under LA (n=15) and GA (n=30) by the same surgical team for treatment of primary palmar hyperhidrosis. The groups were homogeneous for relevant demographic, physiological and ...

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