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Search Results: 1 - 10 of 5727 matches for " Fabio Salice "
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Indoor Human Detection Based on Thermal Array Sensor Data and Adaptive Background Estimation  [PDF]
Anna A. Trofimova, Andrea Masciadri, Fabio Veronese, Fabio Salice
Journal of Computer and Communications (JCC) , 2017, DOI: 10.4236/jcc.2017.54002
Abstract: Low Resolution Thermal Array Sensors are widely used in several applications in indoor environments. In particular, one of these cheap, small and unobtrusive sensors provides a low-resolution thermal image of the environment and, unlike cameras; it is capable to detect human heat emission even in dark rooms. The obtained thermal data can be used to monitor older seniors while they are performing daily activities at home, to detect critical situations such as falls. Most of the studies in activity recognition using Thermal Array Sensors require human detection techniques to recognize humans passing in the sensor field of view. This paper aims to improve the accuracy of the algorithms used so far by considering the temperature environment variation. This method leverages an adaptive background estimation and a noise removal technique based on Kalman Filter. In order to properly validate the system, a novel installation of a single sensor has been implemented in a smart environment: the obtained results show an improvement in human detection accuracy with respect to the state of the art, especially in case of disturbed environments.
Denoising Using Soft Thresholding
JEENA JOY,SALICE PETER,NEETHA JOHN
International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering , 2013,
Abstract: This paper presents a comparative study of different wavelet denoising techniques and the results obtained were examined. The denoising process rejects noise by thresholding in the wavelet domain. It is observed that rigrsure method gives optimum performance. Discrete wavelet transform has the benefit of giving a joint timefrequency representation of the signal. Also it is suitable for both stationary and non stationary signals and is the most appropriate system in the field of signal detection. Discrete wavelet transform is implemented through multi resolution analysis and digital filter banks
Reliable System Specification for Self-Checking Data-Paths
C. Bolchini,F. Salice,D. Sciuto,L. Pomante
Computer Science , 2007,
Abstract: The design of reliable circuits has received a lot of attention in the past, leading to the definition of several design techniques introducing fault detection and fault tolerance properties in systems for critical applications/environments. Such design methodologies tackled the problem at different abstraction levels, from switch-level to logic, RT level, and more recently to system level. Aim of this paper is to introduce a novel system-level technique based on the redefinition of the operators functionality in the system specification. This technique provides reliability properties to the system data path, transparently with respect to the designer. Feasibility, fault coverage, performance degradation and overheads are investigated on a FIR circuit.
Tensile Structures of Cables Net, Guidelines to Design and Applications  [PDF]
Fabio Rizzo
Open Journal of Civil Engineering (OJCE) , 2016, DOI: 10.4236/ojce.2016.62023
Abstract: The structural engineering design of not conventional typologies imposes a complex path that begins evaluating procedures of a preliminary design and ends with complex procedures to validate the analysis response. Any guide lines to follow are often available. About complex shapes, in particular, any details are presented in the codes to evaluate wind action and so wind tunnel experiments are necessary to valuate this. The evaluation of wind tunnel data is a complex process that often needs new and specific subroutines programmed by researchers. The difficult increases when the objective is to study a not specific building but general aspects as for examples the dependence of a generic phenomenon by a geometric sample; in this case it is necessary to design and to program numerical subroutines before and then the wind tunnel experiments. Often, these subroutines are left detached and are non-generalizable process. Purpose of this paper is to describe a complete procedure to pre- and post-process wind tunnel data with the objective to design a not convectional structure as a tensile structure. In this particular case the research aim is a parametrization of the aerodynamic behavior of Hyperbolic Paraboloid roofs, shape used for cables net. The reason of the experiments is the absence in the international codes of the pressure coefficients for these geometries. The paper describes the numerical procedure evaluated to choose a sufficient representative geometric sample, the numerical procedure evaluated to design and to construct the wind tunnel models and FE models, the numerical procedure to evaluate and to use for FEM analyses of the wind tunnel data, the numerical procedure to calculate nonlinear structural analysis, and, finally some applications. All these numerical procedures use basic theory derived for example by the cable theory, the fluid mechanic, the nonlinear geometric analysis and other. However specific codes were necessary and were programmed to apply the theories on the specific case of study; the complete methodology followed is presented. The goal is to create a free open domain where the numerical procedures evaluated are merged, added, modified by researchers with the aim to obtain a common space of use for wind engineering of not conventional structure.
Correlación clínica, laparoscópica e histológica en el abdomen agudo
Trujillo Toledo,María Elena; Mederos Curbelo,Orestes Noel; Salice,José; Viamonte Montejo,Francisco;
Revista Cubana de Cirug?-a , 1995,
Abstract: se presentan 132 pacientes con diagnóstico clínico de abdomen agudo durante 1991 a 1993, a quienes se les realizó laparoscopia de urgencia. las afecciones más frecuentes en que se realizó laparoscopia fueron: apendicitis aguda y las enfermedades ginecológicas. la efectividad de la laparoscopia en relación con el resultado histológico fue del 97,1 %, y no coincidió en 3 pacientes con diagnóstico laparoscópico de apendicitis aguda, hematosalpinx derecho y peritonitis pélvica, sin especificar factor causal. en el 19,6 % la conclusión laparoscópica evitó una intervención quirúrgica
Correlación clínica, laparoscópica e histológica en el abdomen agudo
María Elena Trujillo Toledo,Orestes Noel Mederos Curbelo,José Salice,Francisco Viamonte Montejo
Revista Cubana de Cirugía , 1995,
Abstract: Se presentan 132 pacientes con diagnóstico clínico de abdomen agudo durante 1991 a 1993, a quienes se les realizó laparoscopia de urgencia. Las afecciones más frecuentes en que se realizó laparoscopia fueron: apendicitis aguda y las enfermedades ginecológicas. La efectividad de la laparoscopia en relación con el resultado histológico fue del 97,1 %, y no coincidió en 3 pacientes con diagnóstico laparoscópico de apendicitis aguda, hematosalpinx derecho y peritonitis pélvica, sin especificar factor causal. En el 19,6 % la conclusión laparoscópica evitó una intervención quirúrgica
Unraveling the Relative Importance of Oral and Dermal Contaminant Exposure in Reptiles: Insights from Studies Using the Western Fence Lizard (Sceloporus occidentalis)
Scott M. Weir, Larry G. Talent, Todd A. Anderson, Christopher J. Salice
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0099666
Abstract: Despite widespread recognition of significant data deficiencies, reptiles remain a relatively understudied taxon in ecotoxicology. To conduct ecological risk assessments on reptiles frequently requires using surrogate taxa such as birds, but recent research suggests that reptiles have significantly different exposure profiles and toxicant sensitivity. We exposed western fence lizards, Sceloporus occidentalis, to the same quantities of three model chemicals via oral (gavage) and dermal (ventral skin application) exposure for either 24 or 48 hours. Three phthalate esters (di-methyl phthalate [DMP], di-iso-butyl phthalate [DIBP], and di-n-octyl phthalate [DNOP]) were chosen as model chemicals because they represent a gradient of lipophilicity but are otherwise structurally similar. Overall, the more lipophilic phthalates (DIBP and DNOP) were found to have higher concentrations in tissues than the less lipophilic DMP. Significant differences in tissue concentrations between DIBP and DNOP were tissue-dependent, suggesting that delivery to a site of action following exposure is not only a simple function of lipophilicity. In dermal treatments, DMP usually had fewer detections (except in ventral skin samples), suggesting that lipophilicity (log Kow>2) is a requirement for uptake across the skin. In general, tissue residues were greater in oral treatments than dermal treatments (significant in adipose and liver tissue), but differences were driven strongly by differences in DMP which did not appear to be absorbed well across skin. When differences in tissue residue concentrations between oral and dermal exposure did occur, the difference was not drastic. Taken together these results suggest that dermal exposure should be considered in risk assessments for reptilian receptors. Dermal exposure may be an especially important route for reptiles as their ectothermic physiology translates to lower energetic demands and dietary exposure compared to birds and mammals.
All-Optical Cryptographic Device for Secure Communication  [PDF]
Fabio Garzia, Roberto Cusani
Communications and Network (CN) , 2010, DOI: 10.4236/cn.2010.24034
Abstract: An all-optical cryptographic device for secure communication, based on the properties of soliton beams, is presented. It can encode a given bit stream of optical pulses, changing their phase and their amplitude as a function of an encryption serial key that merge with the data stream, generating a ciphered stream. The greatest advantage of the device is real-time encrypting – data can be transmitted at the original speed without slowing down.
Comparison of 4 Multi-User Passive Network Topologies for 3 Different Quantum Key Distribution  [PDF]
Fabio Garzia, Roberto Cusani
Communications and Network (CN) , 2010, DOI: 10.4236/cn.2010.23025
Abstract: The purpose of this paper is to compare the performance of four passive optical network topologies in implementing multi-user quantum key distribution, using 3 protocols proposed by quantum cryptography (B92, EPR, and SSP). The considered networks are the passive-star network, the optical-ring network based on the Signac interferometer, the wavelength-routed network, and the wavelength-addressed bus network. The quantum bit-error rate and sifted key rate for each of these topologies are analysed to determine their suitability for providing quantum key distribution-service to networks of various sizes. The efficiency of the three considered protocols is also determined.
A 29-year-old pregnant woman with a history of anthracycline-induced clinical heart failure  [PDF]
Valentina Scheggi, Fabio Mori
Health (Health) , 2011, DOI: 10.4236/health.2011.31007
Abstract: The number of women with heart disease who reach childbearing age in a good functional state increases continuously as advances in diagnosis and treatment improve overall health and prognosis. The cardiologist’s role is to give the woman an estimate of both maternal and fetal risk to allow her to make an informed decision about embarking on a pregnancy, and to provide appropriate antenatal care. There are only a few data about the natural history of anthracycline-induced cardiomyopathy during preg- nancy; we report our experience of a 29-year- old pregnant woman with a history of anthracycline-induced clinical heart failure.
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