ODIN: Obfuscation-based privacy-preserving consensus algorithm for Decentralized Information fusion in smart device Networks

The large spread of sensors and smart devices in urban infrastructures are motivating research in the area of the Internet of Things (IoT) to develop new services and improve citizens’ quality of life. Sensors and smart devices generate large amounts of measurement data from sensing the environment, which is used to enable services such as control of power consumption or traffic density. To deal with such a large amount of information and provide accurate measurements, service providers can adopt information fusion, which given the decentralized nature of urban deployments can be performed by means of consensus algorithms. These algorithms allow distributed agents to (iteratively) compute linear functions on the exchanged data, and take decisions based on the outcome, without the need for the support of a central entity. However, the use of consensus algorithms raises several security concerns, especially when private or security critical information is involved in the computation. In this article we propose ODIN, a novel algorithm allowing information fusion over encrypted data. ODIN is a privacy-preserving extension of the popular consensus gossip algorithm, which prevents distributed agents from having direct access to the data while they iteratively reach consensus; agents cannot access even the final consensus value but can only retrieve partial information (e.g., a binary decision). ODIN uses efficient additive obfuscation and proxy re-encryption during the update steps and garbled circuits to make final decisions on the obfuscated consensus. We discuss the security of our proposal and show its practicability and efficiency on real-world resource-constrained devices, developing a prototype implementation for Raspberry Pi devices

ODIN: Obfuscation-based privacy-preserving consensus algorithm for Decentralized Information fusion in smart device Networks

The large spread of sensors and smart devices in urban infrastructures are motivating research in the area of the Internet of Things (IoT) to develop new services and improve citizens’ quality of life. Sensors and smart devices generate large amounts of measurement data from sensing the environment, which is used to enable services such as control of power consumption or traffic density. To deal with such a large amount of information and provide accurate measurements, service providers can adopt information fusion, which given the decentralized nature of urban deployments can be performed by means of consensus algorithms. These algorithms allow distributed agents to (iteratively) compute linear functions on the exchanged data, and take decisions based on the outcome, without the need for the support of a central entity. However, the use of consensus algorithms raises several security concerns, especially when private or security critical information is involved in the computation. In this article we propose ODIN, a novel algorithm allowing information fusion over encrypted data. ODIN is a privacy-preserving extension of the popular consensus gossip algorithm, which prevents distributed agents from having direct access to the data while they iteratively reach consensus; agents cannot access even the final consensus value but can only retrieve partial information (e.g., a binary decision). ODIN uses efficient additive obfuscation and proxy re-encryption during the update steps and garbled circuits to make final decisions on the obfuscated consensus. We discuss the security of our proposal and show its practicability and efficiency on real-world resource-constrained devices, developing a prototype implementation for Raspberry Pi devices

First-episode psychosis and migration in Italy (PEP-Ita migration): a study in the Italian mental health services

BACKGROUND: It has been frequently reported a higher incidence of psychotic disorders in immigrants than in native populations. There is, however, a lack of knowledge about risk factors which may explain this phenomenon. A better understanding of the causes of psychosis among first-generation migrants is highly needed, particularly in Italy, a country with a recent massive migration. METHODS/DESIGN: The "Italian study on first-episode psychosis and migration (PEP-Ita)" is a prospective observational study over a two-year period (1 January 2012-31 December 2013) which will be carried out in 11 Italian mental health centres. All participating centres will collect data about all new cases of migrants with first-episode psychosis. The general purpose ("core") of the PEP-Ita study is to explore the socio-demographic and clinical characteristics, and the pathways to care of a population of first-episode psychosis migrants in Italy. Secondary aims of the study will be: 1) to understand risk and protective factors for the development of psychotic disorders in migrants; 2) to evaluate the correlations between psychopathology of psychotic disorders in migrants and socio-demographic characteristics, migration history, life experiences; 3) to evaluate the clinical and social outcomes of first-episode psychoses in migrants. DISCUSSION: The results of the PEP-Ita study will allow a better understanding of risk factors for psychosis in first-generation migrants in Italy. Moreover, our results will contribute to the development of prevention programmes for psychosis and to the improvement of early intervention treatments for the migrant population in Italy

Two new triterpenes from Commicarpus grandiflorus (A. Rich.) Standl. aerial parts exudate

The exudate of Commicarpus grandiflorus (A. Rich.) Standl. flowering aerial parts was investigated for its chemical composition. Nine compounds were isolated, five triterpenes and four methylated flavones, of which two were new natural triterpenes, 2 alpha,3 beta,11 alpha-olean-18-en-2,3,11-triol (1) and 2 alpha,3 beta-olean-12-en-2,3-diol-11-one (2) that were named commicarpotriol and commicarpodiol, respectively. Structural characterization was carried out using 1D, 2D NMR, and MS techniques and the antimicrobial activity of all isolates was evaluated

Psychotic symptoms and general health in a socially disadvantaged migrant community in Bologna

BACKGROUND AND AIMS: Social exclusion and reduced access to community health services can lead to urgent health problems among immigrants; this may explain their increasing rate of admittance to psychiatric inpatient units. This cross-sectional study aims to evaluate the prevalence of psychotic symptoms among Romanian immigrants living in very poor conditions at an abandoned hotel in Bologna and to highlight the possible correlation with general health status, distress and socio-demographic characteristics. METHODS: The Psychosis Screening Questionnaire (PSQ) and General Health Questionnaire-12 (GHQ-12) were administered to all immigrants residing at the hotel during two index days with the help of a cultural mediator. Socio-demographic, migration and health characteristics were also collected. RESULTS: Sixty eight subjects were evaluated. More than 80% had left Romania for economic reasons. Of immigrants, 57% exceeded the four-point GHQ-12 threshold of potential mental disorder and 19% scored positively at the PSQ. Immigrants with positive PSQ showed higher mean GHQ-12 scores (5.9 +/- 3.5 vs. 3.8 +/- 2.75; p = 0.02). The development of post-migration health problems significantly predicts positive PSQ cases even after adjusting for age, sex and GHQ-12 dichotomized score (OR = 21.2, CI = 1.1-169.4). CONCLUSION: This community of immigrants living in deprived conditions showed a high prevalence of distress and psychotic symptoms, related to health problems. Preventing excess of psychosis among immigrants and ethnic minorities in critical socio-economic conditions should mean, first and foremost, facilitating social integration and access to primary care

Work of the Bologna Transcultural Psychiatric Team (BoTPT) with refugees and asylum seekers: When remembering helps (Article) [Il lavoro del Centro di Studio e Ricerche G. Devereux - Bologna Transcultural Psychiatric Team (BoTPT) con i rifugiati e i richiedenti asilo: Per una memoria utile]

Introduction: Refugees and asylum seekers are a growing population in Western countries. The dramatic life situations from which they escape, and the difficulties of integration within host countries, are associated with the onset of trauma-related mental disorders (feelings of displacement, loss of identity) and major psychiatric disorders such as PTSD and Major Depressive Disorder. Aims and methods: The increasing number of refugees referred by welcome centres, where they live, has led the Bologna BoTPT (Bologna Transcultural Psychiatric Team) Study and Research Centre to develop an operational plan aimed at improving care of these individuals. We chose to cooperate with social workers involved with integration projects to strengthen their listening skills and ability to recognize the needs expressed by asylum-seekers, and get them to compare their work experiences in a self-help/mutual-aid group guided by a mental health professional. Furthermore, we created a setting that responds to patients' requests for help, focusing not only on traumatic events, but also on distress related to existential uncertainty that they experience when settling in. Results and critical points: We found an improvement in social workers' ability to cope with the stress of relating to refugees and their needs. Our work also led us to reappraise the category of PTSD, which is often inadequate to describe the complex experience of these patients. Conclusions: Our work has helped to identify ways of strengthening collaborative activities between the City Council, as it is the institution in charge of welcoming refugees and asylum seekers, and the Mental Health Centr

M. Ponticelli, M.L. Bellone, V. Parisi, A. M. Iannuzzi, A. Braca, N. De Tommasi, D. Russo, A. Sileo, P. Quaranta, G. Freer, M. Pistello

Viral infections have always been the main global health challenge, as a number of potentially lethal viruses, including the hepatitis virus, herpes virus, and influenza virus, have affected human health for decades. Unfortunately, most of the licensed antiviral drugs are characterized by many adverse reactions and, in the long-term therapy, also develop viral resistance; for these reasons, researchers have focused their attention on the investigation of potential antiviral molecules from plants. Natural resources indeed offer a variety of specialized therapeutic metabolites that have been demonstrated to inhibit viral entry into the host cells and replication through the regulation of viral absorption, cell receptor binding, and competition for the activation of intracellular signaling pathways. A wide variety of active phytochemicals, including flavonoids, lignans, terpenoids, coumarins, saponins, alkaloids, etc., have been identified as potential candidates for preventing and treating viral infections. Using a systematic approach, this review summarises the knowledge obtained to date on the in vivo antiviral activity of specialized metabolites extracted from plant matrices by focusing on their mechanism of action

Migrant pathways to community mental health centres in Italy

Background: Many studies indicate that migrants in western countries have limited access to and low utilization of community mental health centres (CMHCs) despite the high prevalence of mental disorders. Aims: We aimed to compare migrant pathways to care across four CMHCs located in different Italian provinces and to identify pathway to care predictors. Methods: Migrants attending the four CMHCs between 1 July 1999 and 31 December 2007 were included in the study. Data were gathered retrospectively from clinical data sets and chart review. Results: Five hundred and eleven (511) migrants attended the four CMHCs, 61% were referred by GPs or other health services and 39% followed non-medical pathways to care (self-referral or through social and voluntary organizations), with important site variations. Younger age and being married were predictors of medical pathways to care; lacking a residence permit and having a diagnosis of substance abuse were related to non-medical pathways. Conclusions: Pathways to CMHCs are complex and influenced by many factors. Non-medical pathways to care seem to be frequent among migrants in Italy. More attention should be paid to developing psychiatric consultation liaison models that also encompass the social services and voluntary organizations