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Search Results: 1 - 10 of 37 matches for " Arcieri "
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Secure Messaging Implementation in OpenSC  [PDF]
Maurizio Talamo, Maulahikmah Galinium, Christian H. Schunck, Franco Arcieri
Journal of Information Security (JIS) , 2012, DOI: 10.4236/jis.2012.34032
Abstract: Smartcards are used for a rapidly increasing number of applications including electronic identity, driving licenses, physical access, health care, digital signature, and electronic payments. The use of a specific smartcard in a \"closed\" environment generally provides a high level of security. In a closed environment no other smartcards are employed and the card use is restricted to the smartcard's own firmware, approved software applications, and approved card reader. However, the same level of security cannot be claimed for open environments where smartcards from different manufacturers might interact with various smartcard applications. The reason is that despite a number of existing standards and certification protocols like Common Criteria and CWA 14169, secure and convenient smartcard interoperability has remained a challenge. Ideally, just one middleware would handle the interactions between various software applications and different smartcards securely and seamlessly. In our ongoing research we investigate the underlying interoperability and security problems specifically for digital signature processes. An important part of such a middleware is a set of utilities and libraries that support cryptographic applications including authentication and digital signatures for a significant number of smartcards. The open-source project OpenSC provides such utilities and libraries. Here we identify some security lacks of OpenSC used as such a middleware. By implementing a secure messaging function in OpenSC 0.12.0 that protects the PIN and data exchange between the SC and the middleware, we address one important security weakness. This enables the integration of digital signature functionality into the OpenSC environment.
IMMIGRAZIONE, CRIMINOLOGIA CRITICA E DISOBBEDIENZA CIVILE: IL CASO DI VIA ANELLI A PADOVA
Orozco Arcieri,Carlos Andrés;
Revista de Derecho , 2009,
Abstract: el uso de la perspectiva macro-sociológica en función teórica y práctica, en el estudio y en la interpretación de los resultados de la investigación acerca del ghetto de via anelli, además de desenmascarar las condiciones de marginalización de los inmigrantes, nos permite el desarrollo de conceptos normativos que hacen posible el reconocimiento y la defensa de los derechos constitucionales de los más vulnerables.
IMMIGRAZIONE, CRIMINOLOGIA CRITICA E DISOBBEDIENZA CIVILE: IL CASO DI VIA ANELLI A PADOVA
Carlos Andrés Orozco Arcieri
Revista de Derecho , 2009,
Abstract: El uso de la perspectiva macro-sociológica en función teórica y práctica, en el estudio y en la interpretación de los resultados de la investigación acerca del ghetto de Via Anelli, además de desenmascarar las condiciones de marginalización de los inmigrantes, nos permite el desarrollo de conceptos normativos que hacen posible el reconocimiento y la defensa de los derechos constitucionales de los más vulnerables.
Síndrome ocular isquêmica associada a glaucoma neovascular: relato de um caso
Arcieri, Enyr Saran;Costa, Vital Paulino;
Arquivos Brasileiros de Oftalmologia , 2001, DOI: 10.1590/S0004-27492001000300018
Abstract: the authors present a case of neovascular glaucoma secondary to ocular ischemic syndrome as the initial manifestation of carotid occlusive disease. color doppler imaging of the carotids and orbit showed all the factors associated with a greater risk of developing this syndrome: severe bilateral carotid stenosis, high-grade carotid stenosis, and reversed ophthalmic artery blood flow. the authors also discuss how the neovascular glaucoma was controlled with only one topical medication.
Efeitos da latanoprosta sobre a espessura foveal em olhos submetidos à cirurgia de catarata
Arcieri, Enyr Saran;Mendon?a, Camila Naves;Barra, Daniela Borges;Corrêa, Ticiana;Arcieri, Rafael Saran;
Arquivos Brasileiros de Oftalmologia , 2008, DOI: 10.1590/S0004-27492008000500004
Abstract: purpose: to study prospectively using optical coherence tomography whether topical latanoprost induces retinal disorders in patients that underwent cataract surgery. methods: randomized, masked-observer, one-month clinical trial. pseudophakic patients were treated with latanoprost (n=10) or lubricant drop q.d. (control group) (n=10). half of the patients of each group presented ruptured posterior capsule (nd:yag laser). we evaluated the blood-retinal barrier status assessed by optical coherence tomography measurement of retinal thickness in the fovea. before the beginning of the study and after 15 and 30 days of treatment, optical coherence tomography images were taken, and the visual acuity examination was performed. results: there was no statistically significant increase in mean foveal thickness when patients instilled placebo (p>0.0610). a statistically significant increase in retinal thickness in the fovea was observed when patients instilled latanoprost (p<0.0004). no changes were observed in visual acuity in both groups. mean retinal thickness in the fovea was significantly higher in the latanoprost group (p<0.0007). the mean foveal thickness in latanoprost treated eyes with ruptured posterior capsule was statistically greater when compared with that of intact posterior capsule (p<0.0461). when comparing only the patients with that of intact posterior capsule, there was a statistically significant difference in foveal thickness between patients treated with latanoprost (236.4 ± 29.4 mm) and placebo (197.8 ± 19.3 mm) only at 30 days of treatment. conclusions: latanoprost may lead to disruption of the blood-retinal barrier in pseudophakic patients, and is more probable to occur in patients with ruptured posterior capsule.
Involvement of Norepinephrine in the Control of Activity and Attentive Processes in Animal Models of Attention Deficit Hyperactivity Disorder
D. Viggiano,L. A. Ruocco,S. Arcieri,A. G. Sadile
Neural Plasticity , 2004, DOI: 10.1155/np.2004.133
Abstract: Functional and morphological studies in children affected by Attention Deficit Hyperactivity Disorder (ADHD) suggest a prefrontal cortex (PFc) dysfunction. This cortical region is regulated by subcortical systems including noradrenergic (NEergic), dopaminergic (DAergic), cholinergic, serotonergic, and histaminergic pathways. A wealth of data in humans and in animal models demonstrates altered dopamine (DA) regulation. Drugs that modulate norepinephrine (NE) transmission are also effective in ADHD patients, thus leading to the hypothesis of a NEergic disorder. This review covers the regulation of PFc functions by NE and the interaction between the NE and DA systems, as suggested by pharmacological, electrophysiological, morphological, and gene knock out (KO) studies. A negative feedback between NE and DA neurons emerges from KO studies because KO mice showing increased (NE transporter (NET) KO) or decreased (DBH and VMAT2 KO) NE levels are respectively associated with lower and higher DA levels. Locomotor activity can be generally predicted by the DA level, whereas sensitivity to amphetamines is by NE/DA balance. Some animal models of ADHD, such as spontaneously hypertensive rats (SHR), show alterations in the PFc and in the DA system. Evidence about a correlation between the NE system and hyper-locomotion activity in such animals has not yet been clarified. Therefore, this review also includes recent evidence on the behavioral effects of two NET blockers, reboxetine and atomoxetine, in two animal models of ADHD: SHR and Naples High Excitability rats. As these drugs modulate the DA level in the PFc, certain effects are likely to be due to a rebalanced DA system. We discuss the significance of the results for theories of ADHD and make suggestions for future experimentation.
Aplicación del Estándar Australiano de Administración del Riesgo AS/NZS 4360: 1999 en la empresa GECELCA
Cuello Lascano,Roberto; Pallares Caro,Laura Viviana; Wehdeking Arcieri,Erick;
Pensamiento & Gestión , 2008,
Abstract: this research studies the process of management entrepreneurial risk focused particularly on the australian risk management standard, as/nzs 4360:1999, doing the identification, measuring and control about financial and strategic risks, and the gecelca's environment. its development was based on primary and secondary sources coming from gecelca's historic information and from the electric sector. it is expected that this study becomes a reference framework to gecelca as an initial parameter in measuring risk associated to business. it is estimated that the enterprise continues with the risk management implementation process in order to identify the potential risks, to measure their magnitude, and to define the way of responding in such a way that its interests, patrimony, an organization responsibility are not affected.
Aplicación del Estándar Australiano de Administración del Riesgo AS/NZS 4360: 1999 en la empresa GECELCA
Roberto Cuello Lascano,Laura Viviana Pallares Caro,Erick Wehdeking Arcieri
Pensamiento & Gestión , 2008,
Abstract: Este estudio aborda el proceso de administración del riesgo empresarial, y se enfoca particularmente en la implementación del Estándar Australiano de Administración del Riesgo AS/NZS 4360:1999, realizando la identificación, medición y control de los riesgos financieros, estratégicos y del entorno de la empresa GECELCA S.A. ESP. Su desarrollo estuvo basado en fuentes primarias y secundarias proveniente de GECELCA e información histórica proveniente del sector eléctrico. Se espera que este estudio se convierta en un marco de referencia para GECELCA como parámetro inicial en la medición de los riesgos asociados al negocio y se estima que la empresa continúe la implementación de la administración del riesgo con el fin de identificar los riesgos que se puedan presentar, medir su magnitud y definir la forma de responder ante ellos, de manera que no se afecten los intereses, el patrimonio y la responsabilidad de la organización. This research studies the process of management entrepreneurial risk focused particularly on the Australian risk management standard, AS/NZS 4360:1999, doing the identification, measuring and control about financial and strategic risks, and the GECELCA's environment. Its development was based on primary and secondary sources coming from GECELCA's historic information and from the electric sector. It is expected that this study becomes a reference framework to GECELCA as an initial parameter in measuring risk associated to business. It is estimated that the enterprise continues with the risk management implementation process in order to identify the potential risks, to measure their magnitude, and to define the way of responding in such a way that its interests, patrimony, an organization responsibility are not affected.
Assessment of the diet of 0- to 6-year-old children in municipal schools in a Brazilian city
Garbin Clea,Arcieri R,Ferreira N,Luvizuto E
Journal of the Indian Society of Pedodontics and Preventive Dentistry , 2005,
Abstract: Diet control is one of the important factors in the prevention of dental caries because food functions as substratum for fermentation and, consequently, for the formation of the organic acids that demineralize the tooth surface. This study aims to descriptively assess school diet and the associated caries-preventive methods applied to children in all municipal nursery schools of a Brazilian city (Aragatuba/SP). For this, a questionnaire with open and closed questions was used. The results showed that all schools serve school meal, which is composed mainly of sugar, carbohydrates, and proteins. The students enjoy the meal very much because for most of them, the meal served at school is the only source of food. It was observed that 90% of the schools offer other kinds of food besides the main school meal. The snacks served such as cakes, white hominy, and milk fudge are composed of sweet and highly cariogenic foods. It was also verified that in 13.30% of the schools, the daily supervised dental hygiene, an important procedure that should not be neglected, is not carried out. This procedure introduces the children to healthy habits that are added to those acquired in the family environment. It was concluded that the school diet is potentially cariogenic and, in association with the lack of daily dental hygiene, this potential may become even higher.
Interleaving Commands: a Threat to the Interoperability of Smartcard Based Security Applications
Maurizio Talamo,Maulahikmah Galinium,Christian H. Schunck,Franco Arcieri
Computer Science , 2012,
Abstract: Although smartcards are widely used, secure smartcard interoperability has remained a significant challenge. Usually each manufacturer provides a closed environment for their smartcard based applications including the microchip, associated firmware and application software. While the security of this "package" can be tested and certified for example based on the Common Criteria, the secure and convenient interoperability with other smartcards and smartcard applications is not guaranteed. Ideally one would have a middleware that can support various smartcards and smartcard applications. In our ongoing research we study this scenario with the goal to develop a way to certify secure smartcard interoperability in such an environment. Here we discuss and experimentally demonstrate one critical security problem: if several smartcards are connected via a middleware it is possible that a smartcard of type S receives commands that were supposed to be executed on a different smartcard of type S'. Such "external commands" can interleave with the commands that were supposed to be executed on S. Here we demonstrate this problem experimentally with a Common Criteria certified digital signature process on two commercially available smartcards. Importantly, in some of these cases the digital signature processes terminate without generating an error message or warning to the user.
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