Lucas Antonio Moscato

• Professor (Full) at University of São Paulo

One of the foundations for Industry 4.0 is the integration of various industrial elements (i.e. sensors, machines, and services) so that these devices can decide in a relatively autonomous way the level of integration which will be adopted. Thus, it is important to understand how the communication Machine to Machine is effectively realized and how...

This paper proposes a new probabilistic approach for safety-related systems design based on modeling accident scenarios with databases where missing data is a major concern. The method is based on (1) multivariate im-putation by chained equations that addresses the problem of missing data in industrial databases, (2) Bayesian network learning appro...

BACKGROUND: Italy is the European country with the highest number of citizens over the age of sixty. In recent years, the unsustainability of the social security system has forced the Italian government to raise the retirement age and reduce the chances of early exit, thus sharply increasing the age of the workforce. Consequently, a significant pro...

This paper explores characteristics of virtual cellular manufacturing systems, of scheduling and dispatching techniques for real time requirements and genetic algorithms for assures a high level of routing flexibility and efficiency in tasks programming for (NDJSP – non-deterministic dynamic job shop problem) systems. It introduces a programming me...

In a global market, the trend for geographical dispersion of manufacturing plants has been observed. This dispersion is motivated by the opportunity to exploit local advantages under different viewpoints. This structure also allows for more intense interaction between plants of different productive enterprises. In this sense, the concept of Virtual...

For the 13 abnormalities under consideration, the mean percentages were found to be the following: irregular head (15.2), microcephalic (9.8), elongated head (5.9), coiled tail (5.8), bent tail (4.7), thin head (4.6), cytoplasmic remains (3.2), macro-cephalic (1.6), short tail (1.1), no tail (0.6), duplicate tail (0.5), duplicate head (0.4), lysis...

A study undertaken on 1345 pregnancies resulting from artificial insemination with donor showed an 18% risk of abortion. This figure is the same as that admitted for natural reproduction. It does not depend on any of the classically studied semen characteristics and in particular remains invariant whatever the postthaw motility, the factor most str...

Human sperm heads which present disturbances of chromatin condensation are stained by acidic aniline, blue. To determine whether the proportion of unstained heads, i.e. with well condensed chromatin, can be considered as an index of sperm quality, a study was undertaken in 157 men during an infertility evaluation. In addition to the usual sperm cha...

This paper describes the current development status of a mobile robot designed to inspect the outer surface of large oil ship hulls and floating production storage offloading (FPSO) platforms. These are usually former oil tanker ships, especially adapted to work as an oil offshore platform. Several mechanisms of corrosion are present in such struct...

The quality of a weld produced by a resistance spot welding process is an issue in various manufactures and areas due to the strong link between the weld quality and safety. In this paper it is proposed the use of a simple model based on physical properties of the process to obtain a quantitative estimation of a resistance spot weld, joining two me...

Atualmente a programação das ferramentas de diagnóstico eletrônico, utilizados por oficinas e rede de concessionárias de algumas montadoras de veículos do Brasil, é executada por mão-de-obra internacional com elevado custo, impactando negativamente o custo estrutural das empresas nacionais que dependem deste serviço. Desta forma, surgiu o interesse...

Safety aspects in the electrical industry are strongly linked to the welding quality of safety parts. A bad contact point of an electronic component can damage the functionality of an electrical control system and lead to the dysfunction of a production plant or to a fire through a short-circuit in an air-plane. Destructive testing (random testing)...

The procedure used for inspection and verification of damages in cables is highly dependent on the experience of a skilled technician who, using binoculars, covers the transmission lines in a helicopter, and is able of visualing points where seems to exist damaged spots in the wires and in insulators of the transmission lines . After this previous...

This paper proposes a control architecture for distributed production systems using a virtual cellular manufacturing and agents based approach, as a natural way for the control of production systems. Actual production system controllers do not have the ability to respond effectively to the system dynamics and complexity. Because of that, much of th...

This paper proposes a control architecture for distributed production systems using a virtual cellular manufacturing and agents based approach, as a natural way for the control of production systems. Actual production system controllers do not have the ability to respond effectively to the system dynamics and complexity. Because of that, much of th...

The present work shows a modeling procedure for discrete manufacturing systems based on Production Flow Schema (PFS). A systematic approach to construct GSPN (Generalized Stochastic Petri Net) models is proposed, whose isomorphism with Markov process allows the extraction of quantitative data. The paper addresses a way to get information that is me...

The pharmacological profilaxis of perioperative seizures is not yet standardized: many protocols suggest the use of phenytoin (PHT), in oral administration at a mean dosage of 300 mg/ day (4-5 mg/Kg/day). This drug, for its peculiar kinetic (nonlinear pharmacokinetics, long and variable half-life, long time to reach the steady-state) is not, at lea...

In this work the use of Voronoi Diagram for defining the cutting path is discussed. In this fashion the cutting path is determined in two steps: first, the Voronoi Diagram is created, and second, the cutting path is calculated based on the Voronoi Diagram. A possible implementation for both steps is presented. The main purpose of this algorithm is...

Based on a 3D model generated in a CAD system, a rapid prototyping system can manufacture a prototype in few hours. The most common techniques for rapid prototyping use materials like resins and polymers. The difference between the material of the manufactured prototype and the real piece makes the realization of some tests with the prototype almos...

Manipulators control systems must use real time algorithms to perform the trajectory planning and position control of each manipulator’s joint. The application of advanced techniques for position control, e.g., adaptive control, as well as trajectory planning in cartesian space, requires a great number of real time calculations. This paper presents...

This work is based on two believes about the next generation of Computer Aided Design: first, it is necessary to explicitly store features and dimensions in a Product Model; second, it is necessary to support user defined features. The Product Model is represented as a hierarchical structure where it is possible to define two kinds of dimensions: l...

Early diagnosis of human immunodeficiency virus (HIV) infection in infants born to infected mothers is important for the infants' medical care, but the presence of maternal antibodies makes serologic tests uninformative. In a cohort study of 181 infants born to HIV-infected mothers, we assessed the diagnostic value of HIV viral culture and testing...

The effects of maternal age on the quality of offspring are well known. Those due to the father's age are less obvious, apart from the role of increasing paternal age in the onset of many dominant autosomal disorders. But an experimental model has demonstrated that, in rats, increasing paternal age, without any other anomalies, might produce a decr...

The effects of maternal age on the quality of offspring are well known. Those due to the father's age are less obvious, apart from the role of increasing paternal age in the onset of many dominant autosomal disorders. But an experimental model has demonstrated that, in rats, increasing paternal age, without any other anomalies, might produce a decr...

Assessment of the risks of transmission of infection with human immunodeficiency virus type 1 (HIV-1) from mother to newborn is difficult, partly because of the persistence for up to a year of maternal antibodies transmitted passively to the infant. To determine the frequency of perinatal transmission of HIV infection, we studied from birth 308 inf...

In a multi-centric study undertaken on 1163 pregnancies obtained by in-vitro fertilization, a 5% risk of ectopic pregnancies was observed. This figure is certainly higher than that admitted for natural reproduction. After simultaneous adjusting for all variables in our data by means of a multiple logistic regression technique, two factors have spec...

Among the men who volunteered to become semen donors for artificial insemination at the sperm bank of Centre d'Etude et de Conservation du Sperme Humain, Paris-Bicêtre, some were brothers of the infertile men of couples entering the Artificial Insemination with Donor program. Their sperm characteristics, compared with those of other donor candidate...

The relationship between age and semen characteristics has been studied; any effect due to the influence of the length of abstinence preceding ejaculation was eliminated. There is an improvement in semen characteristics up to 25 years of age, followed by a leveling off and a subsequent decrease. This variation is not significant as far as the sperm...

The semen characteristics studied were the sperm count, semen volume, morphology and pre-freeze and post-thaw motility. Two categories of fertile men were investigated: semen donor candidates for artificial insemination and pre-vasectomy subjects. Since mean values for each variable in the two series were similar, they could be considered as a sing...

Commonly measured semen variables as well as post-thaw motility have been studied as a function of age in fertile men. The mean age was 34.6 (SD = 6.6). No significant change with age was found for the sperm count, semen volume or total number of spermatozoa. Conversely, there were significant differences between age groups for the percentage of no...

Small robots can be used for inspection in hazardous environments, such as oil rigs or chemical plants. A small autonomous robot, called RoboPET, was developed for remote operations: the robot was designed in an integrated manner and solutions for its mechanical parts, controls, drivers, interfacing, and sensing have been generated. This paper desc...

Resumo Neste trabalho realizamos uma rápida introdução, onde destacamos a importância das pesquisas na área de usinagem 2½D. Em seguida apresentamos uma rápida revisão bibliográfica no assunto. Detalharemos a proposta de definir o caminho de corte baseando-se nos diagramas de Voronoi. Assim, a definição do caminho de corte passa a ser feita em duas...