Papers by Alejandro Martins
The use of fuzzy sets for color recipe specification in the textile print shop
2 . The Demand of a Specific System in the Mental Health Area
The paper describes the application area of diagnosis and therapy of mental disorders. A CBR syst... more The paper describes the application area of diagnosis and therapy of mental disorders. A CBR system that assists professionals and relatives in this area is presented. On the Mental Health area, a certain kind of problems can be fitted in an equal rank, usually designated “behavior disorder” (schizophrenia, alcoholism, etc.). Such cases in which the disease attacks the patient’s quotidian behavior directly demand not only clinical care but a constant attendants’ supervision (nurses, relatives, etc.). The quick identification of the characteristic behavior symptoms and the training of the attendants and the experts in this area are only some of the items that can be decisive for the total or partial reinstatement of the patient to the society. The proposal of using the CBR technique in this area aims at offering a training tool to the professional and attendants, as well as a research instrument of the behavior deviations, through the formation of a case base and the respective behav...
O Emprego de Técnicas de IA no suporte a Administração de Sistemas Operacionais
RESUMO Este artigo tem como objetivo apresentar as principais características dos atuais sistemas... more RESUMO Este artigo tem como objetivo apresentar as principais características dos atuais sistemas operacionais e discutir como a aplicação de conceitos de inteligência artificial pode contribuir na concepção de uma nova geração de sistemas operacionais.
Training Program in Public Administration: The case of Brazil’s Federal Financing Organization
The Caixa Econômica Federal-Brazil's federal financing organization, in conjunction with the... more The Caixa Econômica Federal-Brazil's federal financing organization, in conjunction with the Distance Learning Laboratory–LED of Federal University of Santa Catarina-UFSC, has created a virtual corporate university as an investment towards constantly improving its human capital. It seems a natural evolution then, that the Caixa would opt for a virtual corporate university model-an internet-based learning platform available to employees at any time of the day or night, from any location with an internet ...
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[email protected] A Large Case-Based Reasoner for Legal Cases
www.library.drexel.edu The following item is made available as a courtesy to scholars by the auth... more www.library.drexel.edu The following item is made available as a courtesy to scholars by the author(s) and Drexel University Library and may contain materials and content, including computer code and tags, artwork, text, graphics, images, and illustrations (Material) which may be protected by copyright law. Unless otherwise noted, the Material is made available for non profit and educational purposes, such as research, teaching and private study. For these limited purposes, you may reproduce (print, download or make copies) the Material without prior permission. All copies must include any copyright notice originally included with the Material. You must seek permission from the authors or copyright owners for all uses that are not allowed by fair use and other provisions of the U.S. Copyright Law. The responsibility for making an independent legal assessment and securing any necessary permission rests with persons desiring to reproduce or use the Material.
Sensorless synchronization method for thin-film direct optical broadband monitoring system
Journal of Instrumentation, 2011
ABSTRACT Optical monitoring systems are necessary to manufacture multilayer thin-film optical fil... more ABSTRACT Optical monitoring systems are necessary to manufacture multilayer thin-film optical filters with low tolerance on spectrum specification. Furthermore, to have better accuracy on the measurement of film thickness, direct monitoring is a must. Direct monitoring implies acquiring spectrum data from the optical component undergoing the film deposition itself, in real time. In making film depositions on surfaces of optical components, the high vacuum evaporator chamber is the most popular equipment. Inside the evaporator, at the top of the chamber, there is a metallic support with several holes where the optical components are assembled. This metallic support has rotary motion to promote film homogenization. To acquire a measurement of the spectrum of the film in deposition, it is necessary to pass a light beam through a glass witness undergoing the film deposition process, and collect a sample of the light beam using a spectrometer. As both the light beam and the light collector are stationary, a synchronization system is required to identify the moment at which the optical component passes through the light beam.
FAN: learning by means of free associative neurons
1998 IEEE International Joint Conference on Neural Networks Proceedings. IEEE World Congress on Computational Intelligence (Cat. No.98CH36227), 1998
We introduce a learning method: free associative neurons (FAN). FAN is composed of independent un... more We introduce a learning method: free associative neurons (FAN). FAN is composed of independent units with autonomous learning capability. The learning power of FAN is based on the association of its units and on the use of granularity for representing information. As a method for representing complex environments, FAN can be used in pattern recognition, classification and diagnosis. The paper is focused on the principles governing FAN. We also discuss some results compared to well-known artificial neural network algorithms
VoIP Regulation: Challenges for Competitive-Enabled Societies
2007 First International Global Information Infrastructure Symposium, 2007
... Angela Regina Heinzen Amin Heloul, Luiz Fernando Heinzen, Jr.', Elizabeth Specialski2, A... more ... Angela Regina Heinzen Amin Heloul, Luiz Fernando Heinzen, Jr.', Elizabeth Specialski2, Alejandro Martins' 1: Graduate ... regulation or clear regulating directive regarding telecommunications convergence, the National Telecommunication Agency - ANATEL - has ...
This paper describes and compares the development of two organizational structures to represent m... more This paper describes and compares the development of two organizational structures to represent medical decision making strategies. We generate the solution to a new problem by applying a previous solution from a medical record in a CBR system that performs decision-making about hypertension drug therapy. The case libraries are structured in accordance with the approaches of flat memory and discrimination network. Cases are originated by a retrospective knowledge acquisition about 47 patients who underwent ambulatory care of a university hospital. The similarity-based retrieval employed in the flat structure resembles what physicians do when handling their routine cases of arterial hypertension. Physicians identify a similar case in memory by recognizing the content embedded in the new situation, like a script. The hypothetico-deductive method for searching the case solution follows a similar strategy to the one represented in the prioritized discrimination network. The inclusion of cases in the case library of the discrimination network required more complex procedures than in the case library of the flat memory. These two decision support systems could contribute significantly to patient care. The system we are researching on has educational purposes as well.
Communications in Nonlinear Science and Numerical Simulation, 2013
Temporal organization of events can emerge in complex systems, like neural networks. Here, random... more Temporal organization of events can emerge in complex systems, like neural networks. Here, random graph and cellular automaton are used to represent coupled neural structures, in order to investigate the occurrence of synchronization. The connectivity pattern of this toy model of neural system is of Newman-Watts type, formed from a regular lattice with additional random connections. Two networks with this coupling topology are connected by extra random links and an impulse stimulus is either constantly or periodically applied to a unique neuron. Numerical simulations reveal that this model can exhibit a variety of dynamic behaviors. Usually, the whole system achieves synchronization; however, the oscillation frequencies of the stimulus and of each network can be different. The dynamics is evaluated in function of the network size, the amount of the randomly added edges and the number of time steps in which a neuron can remain firing. The biological relevance of these results is discussed.
Rio de Janeiro, Brazil: …, 1998
This work proposes a multi-agent approach for the development of personal software agents support... more This work proposes a multi-agent approach for the development of personal software agents supported by networks. Personal assistants that help users with several tasks like finding information, learning, scheduling calendars or consulting to decision-making are generalpurpose systems that can be viewed as a collection of intelligent agents. A distributed framework with three different types of agents will be defined in this paper. Each type of agent uses different intelligent techniques to solve specific problems. The combination of these agents provides an environment that supports and mediates the cooperative work and learning in a network. The use of the proposed framework for supporting distance learning will be shown as an application. In addition, this paper will discuss another possible scenario: an application for working capital administration.
A fuzzy hybrid system for supporting financial analysis
Abstract: The correct perception of the financial condition of a firm is dependent upon the quali... more Abstract: The correct perception of the financial condition of a firm is dependent upon the quality of its information processing system and upon the analyst's expertise. The more complex the financial environment, the more difficult is the identification of problematic ...
When dealing with economic decision making, (e.g., financial decision making, budgeting, business... more When dealing with economic decision making, (e.g., financial decision making, budgeting, business feasibility evaluation), one always needs to model cash flows that are uncertain by nature. Due to the lack of information, one has to rely on expert's knowledge to perform such task. Experts use their expertise that combines knowledge and experiences within the context. We propose a system that builds a fuzzy cash flow from the outcome of a Case-Based Reasoning (CBR) system. This outcome is a set of numeric values where we calculate the Most Typical Values (MTV). The CBR system suggests a set of estimated values, appraising cash flow accounts. The system selects the values that better represent the given set using MTV approach, automatically creating Most Typical Fuzzy Sets describing values such as "around $500.00". The content of the fuzzy cash flow consists of actual numbers (provided by certain liabilities and receivables), stated values (such as production targets and sales forecasts) and fuzzy constraints. The actual and stated values are combined with the fuzzy constraints with the purpose of building fuzzy cash flows to support financial decision making.
Monitoring and adjusting financial health problems play central role in the firm's performance. U... more Monitoring and adjusting financial health problems play central role in the firm's performance. Usually, small firms face difficulties in these tasks for lacking human resources and incapacity to afford a consultant. By analyzing the nature of the diagnosis and the solution of financial problems one can identify two different reasoning: during the diagnosis phase, the process is basically intuitive due to complex relations between financial ratios and problems; in the solution phase, the analyst follows a deductive approach searching for the causes and adjustments to the identified problem. Based on these aspects and on the motivation of providing a computational system to aid small firms, we built a Hybrid Intelligent System to diagnose (through Neural Network) and indicate solutions (through Expert System) to financial problems. In this paper we discuss the nature of the problems and present the system.
Reusing cases to the automatic index assignment from textual documents
This paper describes one solution developed to convert textual documents into formlike representa... more This paper describes one solution developed to convert textual documents into formlike representations of cases. The experiences described by cases are textual descriptions of legal decisions. Indexing vocabulary and assignment theory contributed in gathering expert knowledge to define attributes and values as well as the required elements to employ template mining. Most index values are automatically extracted by the use
Case-based reasoning approach to reuse of experiential knowledge in software measurement programs
Adventure Education for Sustainable Development: Integrating Telecommunications, Virtual Learning Environments and Communications Strategies
This paper presents a Brazilian-based project for an adventure education initiative which focuses... more This paper presents a Brazilian-based project for an adventure education initiative which focuses on raising awareness and encouraging active participation in sustainable development causes. In this project, called Destino Azul, a group of 4 undergraduates youths will sail around the world for 24 months starting in March 2003, profiling Agenda 21 initiatives that they shall find in 16 countries along the route. The project aims to be an exemplary application of a tendency emerging in education today: the incorporation of ...
Revista CIATEC-UPF
Com o avanço da tecnologia, o sistema atual de produção e de estilo de vida pode ser alterado. Co... more Com o avanço da tecnologia, o sistema atual de produção e de estilo de vida pode ser alterado. Com isso, profissões novas devem surgir e algumas outras podem desaparecer. O artigo descreve a abordagem realizada pela Indústria 4.0, expondo conceitos que têm sido constantemente implantados nas organizações, como Internet of Things (Internet das Coisas - IoT) e Inteligência Artificial (IA). Tal abordagem se faz necessária devido às progressivas transformações e exigências do mercado para que o ramo industrial e suas operações possam manter-se competitivos. O objetivo final do presente artigo é, portanto, estudar as relações que as tecnologias da Indústria 4.0, sendo a IoT e a IA, estão promovendo no desenvolvimento dos setores industriais e pessoais. Ao nível metodológico, foi realizado um estudo bibliográfico através de artigos científicos e livros, em conjunto com entrevistas com pessoas que atuam na área. Buscou-se, a partir de ambas metodologias, confrontar as informações presentes...
Extração de regras de associação em C&T: O algoritmo Apriori
Page 1. EXTRAÇÃO DE REGRAS DE ASSOCIAÇÃO EM C&T: O ALGORITMO APRIORI Wesley Romão, Carlos AP ... more Page 1. EXTRAÇÃO DE REGRAS DE ASSOCIAÇÃO EM C&T: O ALGORITMO APRIORI Wesley Romão, Carlos AP Niederauer, Alejandro Martins, Aran Tcholakian, Roberto CS Pacheco e Ricardo M. Barcia Programa de Pós-Graduação em Engenharia de Produção - PPGEP ...
A Ação Tec Nep – Tecnologia, Educação, Cidadania e Profissionalização Para Pessoas Com Necessidades Específicas Como Ferramenta De Inclusão Nas Instituições Federais De Educação Profissional e Tecnológica
Interscienceplace, Jul 14, 2011
A questao da Educacao Profissional e Tecnologica Inclusiva tem ocupado grande espaco em discussoe... more A questao da Educacao Profissional e Tecnologica Inclusiva tem ocupado grande espaco em discussoes educacionais ultimamente. A presente pesquisa tem por objetivo investigar o papel da Acao Tecnologia, Educacao, Cidadania e Profissionalizacao de Pessoas com Necessidades Especificas (Deficientes, Superdotados e com Transtornos Globais do Desenvolvimento) – TEC NEP, desde sua implantacao, no ano 2000 ate o ano de 2010, no que concerne ao processo de inclusao voltado para a Educacao Profissional e Tecnologica. Para isso optou-se por um estudo de caso de orientacao etnografica em instituicoes da Rede Federal de Educacao Profissional, Cientifica e Tecnologica. Conclui-se que uma verdadeira politica publica de inclusao que tenha um enfoque pleno, que adota como resposta social todo o ciclo inclusivo (acesso, permanencia, saida e exito sociolaboral) buscara, alem de possibilitar o ingresso do estudante com necessidades especificas, meios para que tenha a possibilidade de obter, ao final de seu curso, trabalho e renda.
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Papers by Alejandro Martins