Monitoraggio dei flussi migratori nel Mar Mediterraneo con satelliti ottici e SAR

Il Mediterraneo è sempre stato considerato un’area di intensi scambi politici, economici e culturali, ma nell’ultimo decennio è diventato anche luogo di intensi flussi migratori dal Nordafrica verso l’Europa. L’immigrazione illegale via mare ha ormai assunto una dimensione tale che nei soli primi due mesi del 2016 oltre 110.000 migranti hanno attraversato il Mediterraneo (fonte: UNHCR). Alla luce di questi numeri, in continua crescita, le istituzioni europee stanno cercando nuove soluzioni per rafforzare il monitoraggio dei confini esterni dell’Unione Europea. Tale operazione, che coinvolge un’area geografica molto estesa, risulta però complessa e costosa se svolta solamente con i mezzi tradizionali (radar di terra, mezzi aerei e navali). In questo contesto, il progetto Space Shepherd cofinanziato dal Politecnico di Milano nell’ambito del programma Polisocial Award, si è occupato dello studio di fattibilità di un sistema integrato ottico-radar per l’individuazione, il monitoraggio e il tracciamento d’imbarcazioni sconosciute in navigazione nel Mar Mediterraneo utilizzando asset speziali già esistenti (Topputo et al., 2015b). L’utilizzo congiunto d’immagini ottiche e radar è in grado di garantire un’osservazione continua e non dipendente dalle condizioni atmosferiche o di illuminazione e una complementarietà in termini di copertura geografica e dettaglio geometrico

Understanding How Labour Trafficking Networks Exploit Systemic Vulnerabilities in Europe: An Exploration of the Italian Agriculture Sector

La tratta degli esseri umani a scopo di sfruttamento lavorativo (tratta lavorativa, labour trafficking) in Europa è un grave crimine contro le persone, che viola i diritti umani. La ricerca esistente si concentra principalmente sulle vittime, mentre lo studio degli autori di reato e sul modo in cui sfruttano le vulnerabilità del sistema è meno sviluppato. Questo è dovuto in parte alla mancanza di dati robusti, ma anche a un approccio della ricerca criminologica tradizionalmente rigido e settoriale. Al contrario, lo studio della tratta lavorativa richiede concetti flessibili, che riconoscano le radici profonde di questo fenomeno nell’intero sistema socioeconomico, più che il semplice prodotto della volontà degli autori dei reati. Partendo dalle indicazioni della letteratura, questa ricerca si concentra sul settore agricolo italiano, non ancora esaminato da un punto di vista criminologico. L’obiettivo è la comprensione dei meccanismi attraverso i quali la tratta lavorativa nasce e si sviluppa. La scelta del contesto dello studio è dovuta alle caratteristiche peculiari dell’Italia, che rendono la tratta lavorativa in agricoltura centrale per il dibattito nazionale. Inoltre, l'Italia condivide alcune caratteristiche con altri paesi europei, e dunque alcune lezioni apprese da questo caso possono essere discusse alla luce del dibattito internazionale. In primo luogo, un’analisi a livello macro esamina come i fattori strutturali associati nella letteratura internazionale alla tratta lavorativa si concretizzano nel contesto italiano. I risultati mostrano che il sistema stesso sembra creare un terreno fertile per lo sviluppo e il mantenimento della tratta lavorativa: la vulnerabilità dei lavoratori migranti è insita nell'attuale quadro normativo dell’immigrazione; la filiera agroalimentare impone ai produttori la riduzione del costo della forza lavoro; e l'attuale sistema legale basato sulla repressione delle condotte criminose inquadrate come eventi eccezionali è insufficiente. In secondo luogo, un’analisi a livello meso descrive le caratteristiche generali delle reti della tratta lavorativa in Italia. Quattro casi studio selezionati con un metodo razionale e sistematico sono poi approfonditi per identificare le principali caratteristiche, modalità e organizzazione relazionale dei reati, e i metodi con cui viene sviluppata e mantenuta la condizione di sfruttamento delle vittime. I risultati mostrano che nei quattro casi studio le reti si sviluppano e si adattano alle opportunità offerte dal sistema legale. I risultati e gli insegnamenti tratti dal caso italiano sono infine discussi alla luce del dibattito internazionale sulla tratta lavorativa.Labour trafficking in Europe is a serious crime against persons, violating their fundamental human rights. Existing research primarily focuses on the victims, while data on offenders and the manner in which they exploit vulnerabilities is less developed. Recent trends in criminological literature are highlighting how the past lack of research is related to the lack of robust data, but also to traditional rigid approaches with exception to few extreme cases. On the contrary, they call for more flexible concepts recognising that labour trafficking is not only the product of offenders’ will, but has deep roots embedded in the socioeconomic system. Elaborating on these indications, this research focuses on the Italian agriculture sector, which has not yet been examined in literature from a criminological perspective, with the aim to understand the mechanisms through which labour trafficking originates and develops. This choice has been made because the characteristics particular to Italy make labour trafficking in agriculture central to the debate within the country; and because Italy shares some characteristics with other European countries, so some lessons learnt from this case can be discussed in light of the international debate on labour trafficking. First, a macro-analysis examines how the structural factors associated in the international literature with labour trafficking take shape in the Italian context. The results show that the system itself seems to create a fertile ground for labour trafficking to develop and maintain: migrant workers’ vulnerability is inherent in the current migration regulatory framework; the agrifood supply chain makes it necessary for producers to lower the cost of workforce; and the current legal system based on the repression of abusive conducts seen as exceptional events proves ineffective. Second, a meso-analysis at organisation/network level describes the general characteristics of labour trafficking networks in Italy, and then zooms in four case studies selected through a rational systematic method to identify the main features, modalities, and relational organisation of the crime commission, and how the exploitative condition of the victims is developed and maintained. The results show that in the four case studies the trafficking networks develop and adapt to the opportunities offered by the legal system. The results are finally discussed in light of the international debate on labour trafficking, and the lessons learned from the case of Italy

Identifying patients at high risk for multidrug-resistant organisms after hospitalization abroad.

OBJECTIVES We quantified the percentage of multidrug-resistant organism (MDRO) carriers among repatriated patients. We identified factors associated with MDRO carriage, and we evaluated the yield of MDRO detection per screened body site. DESIGN Retrospective cohort study. SETTING A tertiary-care center in Switzerland. PATIENTS Adult patients after a stay in a healthcare institution abroad. METHODS Patients were screened for MDRO carriage. Standard sites, including nose and throat, groins, and (since mid-2018) rectum, and risk-based sites (wounds, urine, tracheal secretion) were sampled. MDROs were defined as methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus (VRE), extended-spectrum β-lactamase (ESBL)- and carbapenemase-producing Enterobacterales (CPE), multidrug-resistant (MDR) Enterobacterales, and MDR nonfermenting gram-negative rods. Risk factors for MDRO carriage were assessed using multivariate logistic regression. RESULTS Between May 2017 and April 2019, 438 patients were screened and 107 (24.4%) tested positive for an MDRO, predominantly ESBL-producing and MDR Enterobacterales. Risk factors for MDRO colonization were the length of stay in hospital abroad, antibiotic treatment with 'Watch' and 'Reserve' antibiotics, and region of hospitalization abroad. Rectal swabs had the highest yield for detecting patients with MDR intestinal bacteria, but nose/throat and groins, or wound samples were more sensitive for MRSA or nonfermenting gram-negative organisms, respectively. CONCLUSIONS We identified risk factors for MDRO carriage and body sites with the highest yield for a specific MDRO, which might help to target screening and isolation and reduce screening costs

Vertebral morphology in extant porpoises: Radiation and functional implications

Vertebral morphology has profound biomechanical implications and plays an important role in adaptation to different habitats and foraging strategies for cetaceans. Extant porpoise species (Phocoenidae) display analogous evolutionary patterns in both hemispheres associated with convergent evolution to coastal versus oceanic environments. We employed 3D geometric morphometrics to study vertebral morphology in five porpoise species with contrasting habitats: the coastal Indo-Pacific finless porpoise (Neophocaena phocaenoides); the mostly coastal harbor porpoise (Phocoena phocoena) and Burmeister's porpoise (Phocoena spinipinnis); and the oceanic spectacled porpoise (Phocoena dioptrica) and Dall's porpoise (Phocoenoides dalli). We evaluated the radiation of vertebral morphology, both in size and shape, using multivariate statistics. We supplemented data with samples of an early-radiating delphinoid species, the narwhal (Monodon monoceros); and an early-radiating delphinid species, the white-beaked dolphin (Lagenorhynchus albirostris). Principal component analyses were used to map shape variation onto phylogenies, and phylogenetic constraints were investigated through permutation tests. We established links between vertebral morphology and movement patterns through biomechanical inferences from morphological presentations. We evidenced divergence in size between species with contrasting habitats, with coastal species tending to decrease in size from their estimated ancestral state, and oceanic species tending to increase in size. Regarding vertebral shape, coastal species had longer centra and shorter neural processes, but longer transverse processes, while oceanic species tended to have disk-shaped vertebrae with longer neural processes. Within Phocoenidae, the absence of phylogenetic constraints in vertebral morphology suggests a high level of evolutionary lability. Overall, our results are in accordance with the hypothesis of speciation within the family from a coastal ancestor, through adaptation to particular habitats. Variation in vertebral morphology in this group of small odontocetes highlights the importance of environmental complexity and particular selective pressures for the speciation process through the development of adaptations that minimize energetic costs during locomotion and prey capture.Fil: Marchesi, María Constanza. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Galatius, Anders. University Aarhus; DinamarcaFil: Zaffino, Martina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Coscarella, Mariano Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Gonzalez-Jose, Rolando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Ciencias Sociales y Humanas; Argentin

Influence of two conservative preparation designs on the internal fit of CAD/CAM overlays

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Recruitment into organised criminal groups: A systematic review

This paper provides a narrative synthesis of the results of a systematic review of the social, psychological and economic factors leading to recruitment into organised crime. This is based on the analysis of evidence emerging from 47 qualitative, quantitative and mixed-method studies published in or before 2017. While the selected studies varied markedly in method and quality, several factors emerged as particularly important in understanding recruitment into organised criminal groups. These included the role of social relations (family, kinship, friendship and work-relations), criminal background and criminal skills

Carbon-based magnetic nanocarrier for controlled drug release: a green synthesis approach

In this study, hydrophilic magnetic nanoparticles were synthesized by green routes using a methanolic extract of Rubus ulmifolius Schott flowers. The prepared magnetic nanoparticles were coated with carbon-based shell for drug delivery application. The nanocomposites were further chemically functionalized with nitric acid and, sequentially, with Pluronic® F68 (CMNPs-plur) to enhance their colloidal stability. The resulting material was dispersed in phosphate buffer solution at pH 7.4 to study the Doxorubicin loading. After shaking for 48 h, 99.13% of the drug was loaded by the nanocomposites. Subsequently, the drug release was studied in different working phosphate buffer solutions (i.e., PB pH 4.5, pH 6.0 and pH 7.4) to determine the efficiency of the synthesized material for drug delivery as pH-dependent drug nanocarrier. The results have shown a drug release quantity 18% higher in mimicking tumor environment than in the physiological one. Therefore, this study demonstrates the ability of CMNPs-plur to release a drug with pH dependence, which could be used in the future for the treatment of cancer "in situ" by means of controlled drug release.This research was funded by: Project POCI-01-0145-FEDER-006984 – Associate Laboratory LSRE-LCM funded by FEDER through COMPETE2020 - POCI – and by national funds through FCT (Fundação para a Ciência e a Tecnologia); RTChip4Theranostics, supported by Programa Operacional Regional do Norte—Norte Portugal Regional Operational Programme (NORTE 2020), under the PORTUGAL 2020 Partnership Agreement, through the European Regional Development Fund (ERDF) and by FCT. The authors are grateful to FCT, and FEDER under Programme PT2020 for financial support to CIMO (UID/AGR/00690/2013) and L. Barros contract. R.O.R. acknowledges the Ph.D. scholarship SFRH/BD/97658/2013 granted by FCT. This work was also supported by the Slovak Scientific Grant Agency projects VEGA 2/033/19.info:eu-repo/semantics/publishedVersio

Organized crime groups: A systematic review of individual‐level risk factors related to recruitment

Background Studies from multiple contexts conceptualize organized crime as comprising different types of criminal organizations and activities. Notwithstanding growing scientific interest and increasing number of policies aiming at preventing and punishing organized crime, little is known about the specific processes that lead to recruitment into organized crime. Objectives This systematic review aimed at (1) summarizing the empirical evidence from quantitative, mixed methods, and qualitative studies on the individual-level risk factors associated with the recruitment into organized crime, (2) assessing the relative strength of the risk factors from quantitative studies across different factor categories and subcategories and types of organized crime. Methods We searched published and unpublished literature across 12 databases with no constraints as to date or geographic scope. The last search was conducted between September and October 2019. Eligible studies had to be written in English, Spanish, Italian, French, and German. Selection Criteria Studies were eligible for the review if they: Reported on organized criminal groups as defined in this review. Investigated recruitment into organized crime as one of its main objectives. Provided quantitative, qualitative, or mixed methods empirical analyses. Discussed sufficiently well-defined factors leading to recruitment into organized crime. Addressed factors at individual level. For quantitative or mixed-method studies, the study design allowed to capture variability between organized crime members and non-members. Data Collection and Analysis From 51,564 initial records, 86 documents were retained. Reference searches and experts' contributions added 116 additional documents, totaling 202 studies submitted to full-text screening. Fifty-two quantitative, qualitative, or mixed methods studies met all eligibility criteria. We conducted a risk-of-bias assessment of the quantitative studies while we assessed the quality of mixed methods and qualitative studies through a 5-item checklist adapted from the CASP Qualitative Checklist. We did not exclude studies due to quality issues. Nineteen quantitative studies allowed the extraction of 346 effect sizes, classified into predictors and correlates. The data synthesis relied on multiple random effects meta-analyses with inverse variance weighting. The findings from mixed methods and qualitative studied were used to inform, contextualize, and expand the analysis of quantitative studies. Results The amount and the quality of available evidence were weak, and most studies had a high risk-of-bias. Most independent measures were correlates, with possible issues in establishing a causal relation with organized crime membership. We classified the results into categories and subcategories. Despite the small number of predictors, we found relatively strong evidence that being male, prior criminal activity, and prior violence are associated with higher odds of future organized crime recruitment. There was weak evidence, although supported by qualitative studies, prior narrative reviews, and findings from correlates, that prior sanctions, social relations with organized crime involved subjects, and a troubled family environment are associated with greater odds of recruitment. Authors' Conclusions The available evidence is generally weak, and the main limitations were the number of predictors, the number of studies within each factor category, and the heterogeneity in the definition of organized crime group. The findings identify few risk factors that may be subject to possible preventive interventions