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Search Results: 1 - 10 of 2881 matches for " Mara Pasquamaria Squicciarini "
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Voter Beliefs, Electoral Concerns and Undocumented Migration  [PDF]
Ruxanda Berlinschi, Mara Pasquamaria Squicciarini
Open Journal of Political Science (OJPS) , 2013, DOI: 10.4236/ojps.2013.34020
Abstract:

If voters underestimate the benefits that immigrants bring to their country, policy makers need to campaign for suboptimal migration levels in order to win elections. Once in power, they face a trade-off between keeping electoral promises by restricting immigration and stimulating the economy by favoring immigration. One solution to this trade-off may be maintaining high barriers to legal migration, while keeping a blind eye on undocumented migration.

An Informed Model of Personal Information Release in Social Networking Sites
Anna Squicciarini,Christopher Griffin
Computer Science , 2012,
Abstract: The emergence of online social networks and the growing popularity of digital communication has resulted in an increasingly amount of information about individuals available on the Internet. Social network users are given the freedom to create complex digital identities, and enrich them with truthful or even fake personal information. However, this freedom has led to serious security and privacy incidents, due to the role users' identities play in establishing social and privacy settings. In this paper, we take a step toward a better understanding of online information exposure. Based on the detailed analysis of a sample of real-world data, we develop a deception model for online users. The model uses a game theoretic approach to characterizing a user's willingness to release, withhold or lie about information depending on the behavior of individuals within the user's circle of friends. In the model, we take into account both the heterogeneous nature of users and their different attitudes, as well as the different types of information they may expose online.
Health Inequalities: Access to Services by Immigrants in Italy  [PDF]
Mara Tognetti
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.34002
Abstract: The presence of migrants as a phenomenon of globalization forces the various world health systems to face up to the problem of inequality penalising this population. Although new to immigration, Italy has seen an increase in immigrant health inequalities. Access to health services is a critical issue here.
Recourse to Complementary/Alternative Medicine (CAM) at Times of Economic Crisis: The Case of Italy  [PDF]
Mara Tognetti
Open Journal of Social Sciences (JSS) , 2017, DOI: 10.4236/jss.2017.57023
Abstract: The economic crisis that has invested western countries in the last years has determined a significant reduction in consumption of medication and treatments recourse, too. The Economic recession is generally accompanied by a decrease in health-related consumption, varying according to the welfare model, and especially affecting people of working age with a low income. The present paper focuses on the effects of the economic crisis on users of Complementary/Alternative Medicine treatments (from now on referred as CAM). Based on multi-purpose data analyses, this work aims to examine what kind of strategies such consumers have adopted in order not to neglect their health despite feeling the economic pinch. Our analyses are principally based on ISTAT, Italian National Institute for Recording Statistics findings. Specifically, our research is based on the survey “Health conditions and recourse to health services”. The analysed data refer to the Italian context in the period comprised from 2000 to 2013. The results of this work reveal how, in this delicate phase of the economy, traditional consumers of CAM have signally reduced their use of such treatments. In Italy, in the observed period, factors as working status, age, smoking and chronic diseases have been determinant in the decision to use CAM. The article suggests that, where health is at stake, CAM users are more strategic than the average biomedicine users. Furthermore, confirming the past trend, it shows how difficult it is to afford forms of treatment not covered by the health system as well as it underlines the lack of data for comparison with other countries.
Determinación del polimorfismo de CYP2C9*2 y su relación con la farmacocinética de acenocumarol en voluntarios sanos Relation of cy2c9*2 polymorphism and acenocumarol pharmacokynetics in healthy volunteers
Carla Miranda,ángela Roco,Joselyn Garay,Valentina Squicciarini
Revista Chilena de Cardiología , 2011,
Abstract: Antecedentes: La mayoría de los pacientes que reciben tratamientos con anticoagulantes orales por periodos prolongados presentan variabilidad en la respuesta. El acenocumarol es el anticoagulante oral más prescrito en nuestro país, es biotransformado principalmente por CYP2C9 e investigaciones recientes demuestran que la variante CYP2C9*2 es una de las responsables de la variabilidad de respuesta a acenocumarol. Objetivo: Determinar las diferencias en los parámetros farmacocinéticos de acenocumarol en voluntarios que presentan la variante alélica CYP2C9*2. Métodos: Se estudiaron 24 voluntarios sanos. La detección de genotipos se realizó mediante PCR-RFLP y los parámetros farmacocinéticos se obtuvieron mediante la concentración plasmática de acenocumarol usando un método validado para UPLC-MS/MS. Resultados: Del total de 24 voluntarios, 19 tenían el genotipo CYP2C9*1/*1 (wt/wt), 4 tenían genotipo CYP2C9*1/*2 (heterocigoto) y 1 voluntario tenía genotipo de CYP2C9*2/*2 (homocigoto recesivo). Los parámetros farmacocinéticos del acenocumarol no fueron significativamente diferentes entre los individuos con genotipo CYP2C9*2 y CYP2C9*1. Sin embargo, la farmacocinética de acenocumarol del individuo CYP2C9*2/*2 mostró diferencias relevantes con respecto a la observada en el grupo CYP2C9*1/*1 (tmáx aumentó 1,4 veces, ke disminuyó 1,8 veces y t1/2 aumentó 1,7 veces). Conclusión: La farmacocinética de acenocumarol en el individuo con el genotipo CYP2C9*2/*2 refleja una potencial relevancia de este polimorfismo en el tratamiento con acenocumarol. Background: Most of the patients receiving anticoagulant therapy for extended periods show variability in their clinical response. Acenocumarol, the most commonly prescribed oral anticoagulant in our country, is biotransformed mainly through CYP2C9 and recent research shows that CYP2C9*2 variant is partly responsible for the variable response to ace-nocumarol. Aim: to determine pharmacokinetics parameters of acenocumarol in volunteers exhibiting the CYP2C9*2 polymorphic variant. Methods: Genotype detection was performed using PCR-RFLP and pharmacokinetics parameters were obtained from the acenocumarol concentrations, using a UPLC-MS/MS validated method. The project was approved by the institutional Ethics Committee of the University of Chile's Faculty of Medicine. Results: 19 out of 24 volunteers had the CYP2C9*1/*1 genotype, 4 the CYP2C9*1/*2 genotype (heterozygous) and 1 subject had the CYP2C9*2/*2 genotype (recessive homozygous). No statistically significant differences between acenocumarol pharmacokinetics parameters of
An Overview of VeryIDX - A Privacy-Preserving Digital Identity Management System for Mobile Devices
Federica Paci,Elisa Bertino,Sam Kerr,Anna Squicciarini
Journal of Software , 2009, DOI: 10.4304/jsw.4.7.696-706
Abstract: Users increasingly use their mobile devices to communicate, to conduct business transaction and access resources and services. In such a scenario, digital identity management (DIM) technology is fundamental in customizing user experience, protecting privacy, underpinning accountability in business transactions, and in complying with regulatory controls. Users identity consists of data, referred to as identity attributes, that encode relevant-security properties of the clients. However, identity attributes can be target of several attacks: the loss or theft of mobile devices results in a exposure of identity attributes; identity attributes that are send over WI-FI or 3G networks can be easily intercepted; identity attributes can also be captured via Bluetooth connections without the user’s consent; and mobile viruses, worms and Trojan horses can access the identity attributes stored on mobile devices if this information is not protected by passwords or PIN numbers. Therefore, assuring privacy and security of identity attributes, as well as of any sensitive information stored on mobile devices is crucial. In this paper we address such problems by proposing an approach to manage user identity attributes by assuring their privacypreserving usage. The approach is based on the concept of privacy preserving multi-factor authentication achieved by a new cryptographic primitive which uses aggregate signatures on commitments that are then used for aggregate zero-knowledge proof of knowledge (ZKPK) protocols. We present the implementation of such approach on Nokia NFC cellular phones and report performance evaluation results.
Two Species Evolutionary Game Model of User and Moderator Dynamics
Christopher Griffin,Douglas Mercer,James Fan,Anna Squicciarini
Computer Science , 2012,
Abstract: We construct a two species evolutionary game model of an online society consisting of ordinary users and behavior enforcers (moderators). Among themselves, moderators play a coordination game choosing between being "positive" or "negative" (or harsh) while ordinary users play prisoner's dilemma. When interacting, moderators motivate good behavior (cooperation) among the users through punitive actions while the moderators themselves are encouraged or discouraged in their strategic choice by these interactions. We show the following results: (i) We show that the $\omega$-limit set of the proposed system is sensitive both to the degree of punishment and the proportion of moderators in closed form. (ii) We demonstrate that the basin of attraction for the Pareto optimal strategy $(\text{Cooperate},\text{Positive})$ can be computed exactly. (iii) We demonstrate that for certain initial conditions the system is self-regulating. These results partially explain the stability of many online users communities such as Reddit. We illustrate our results with examples from this online system.
A cooperate-defect model for the spread of deviant behavior in social networks
Sarah Rajtmajer,Christopher Griffin,Derek Mikesell,Anna Squicciarini
Computer Science , 2014,
Abstract: We present a game-theoretic model for the spread of deviant behavior in online social networks. We utilize a two-strategy framework wherein each player's behavior is classified as normal or deviant and evolves according to the cooperate-defect payoff scheme of the classic prisoner's dilemma game. We demonstrate convergence of individual behavior over time to a final strategy vector and indicate counterexamples to this convergence outside the context of prisoner's dilemma. Theoretical results are validated on a real-world dataset collected from a popular online forum.
Are children safe indoor from outdoor air pollution? A short review  [PDF]
Giovanni Ghirga, Mara Pipere
Open Journal of Pediatrics (OJPed) , 2012, DOI: 10.4236/ojped.2012.22016
Abstract: Background: Air pollution is a serious threat to children health. Given that children spend over 80% of their time indoors, understanding transport of pollutants from outdoor to indoor environments is important for assessing the impact of exposure to outdoor pollution on children health. The most common advice given during a smoke pollution episode is to stay indoors. How well this works depends on how clean the indoor air is and how pollutants from outdoor air contribute to pollutants load in indoor air. Objective: To assess the amount of outdoor air pollution coming indoors threatening children health. Methods: A Medline/EMBASE search of scientific articles was performed to evaluate the indoor-to-outdoor (I/O) concentration ratios of two main pollutants: ultrafine particles (UFP) and ozone (O3). Result: Under infiltration condition, the highest I/O ratios (0.6 - 0.9) were usually observed for larger UFP (70 - 100 nm), while the lowest I/O ratios (0.1 - 0.4) occurred typically around 10 - 20 nm. O3 I/O ratios vary according to air exchange and may be 0.6 - 0.8 for interiors having a large volume exchange with outdoor air (i.e. open windows) and 0.3 - 0.4 with conventional air conditioning systems. Conclusions: In the absence of indoor sources or activities, indoor UFP particles originate from outdoors. O3 concentration indoors may reach concentration similar to outdoors. Environmental and energy policies must also explicitly account for all the impacts of fossil fuel combustion on child health and development.
Gratitude, or the Positive Side of the Relationship with Patients. Development and First Validation of New Instruments: A Scale of Gratitude Perceived by Operators and a Scale of Support Offered by the Gratitude Expressed by Their Patients  [PDF]
Mara Martini, Daniela Converso
Psychology (PSYCH) , 2014, DOI: 10.4236/psych.2014.56067
Abstract:

The relationship with patients/users is a crucial dimension for helping professionals. It is nevertheless mostly analyzed in its negative connotation, that’s to say as a possible cause, for example, of the burnout syndrome, while very few are research works that take into account the positive side of the relationship, as a resource more than a problem, and even fewer are the instruments to measure it. The aim of the present work is the development and the analysis of the characteristics of a scale to measure the gratitude expressed by patients perceived by operators and of a scale to measure the perception of support that gratitude by patients/customers offers to relieve the fatigue of daily commitment and return significance to their work. The two scales were developed and then integrated into a questionnaire including items regarding the negative side of the relationship (exceeding requests from patients) and the Customer-initiated support scale (Zimmermann et al., 2011). The questionnaire was filled in by 267 nurses in Piedmont, Italy. Descriptive analyses on each item, exploratory factor analysis, Cronbach’s alpha, analysis of variance, and bivariate correlations were conducted. Both scales show a one-factor solution. The independent sample t-tests highlighted differences between men and women and between people who have families to care for and people who do not. Bivariate correlations signalled a positive relationship between both the gratitude scales and the Customer-initiated support; no relationships are evident with the scale of exceeding request from patients. A limitation of the work is the dimension of the sample: a more extensive administration of the questionnaire is currently in progress that will also permit to more deeply investigate the factorial structure of the scales. The scales will allow filling a gap in measuring a central work issue for helping professions.

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