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Sample records for modelo fuzzy comportamental

  1. Terapia cognitivo-comportamental da fobia social: modelos e técnicas

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    Gustavo J. Fonseca D'El Rey

    2006-08-01

    Full Text Available A fobia social é um dos transtornos mentais mais prevalentes na população geral. As principais formas de tratamento são a psicoterapia e a farmacoterapia. Este artigo tem como objetivo realizar uma breve revisão bibliográfica dos mais importantes modelos e técnicas cognitivas e comportamentais da fobia social. Os modelos antigos - modelo de déficit de habilidades sociais, modelo de crenças irracionais, modelo da vulnerabilidade cognitiva e os modelos integrativos - serão revisados brevemente. Serão apresentadas as técnicas de tratamento - como a exposição, reestruturação cognitiva, técnicas de relaxamento e treino de habilidades sociais. Estudos de metaanálise sobre a eficácia da terapia cognitivo-comportamental no tratamento da fobia social também serão descritos.La fobia social es uno de los trastornos mentales más prevalentes en la población general. Las principales formas de tratamiento son la psicoterapia y la farmacoterapia. Este artículo posee como objetivo realizar una breve revisión bibliográfica de los más importantes modelos y técnicas cognitivas y comportamentales de la fobia social. Los modelos antiguos - modelo de déficit de habilidades sociales, modelo de creencias irracionales, modelo de la vulnerabilidad cognitiva y los modelos integrativos - serán revisados brevemente. Serán presentadas las técnicas de tratamiento - como la exposición, reestructuración cognitiva, técnicas de relajamiento y entrenamiento de habilidades sociales. Estudios de metaanálisis sobre la eficacia de la terapia cognitivo-comportamental en el tratamiento de la fobia social también serán descritos.Social phobia is a widespread mental disorder in the general population. The main forms of treatment are psychotherapy and pharmacotherapy. This article has as objective to carry out a brief bibliographical review of the most important cognitive and behavior models and techniques of social phobia. The old models - social

  2. EVALUACIÓN COMPORTAMENTAL DEL TRASPLANTE DE hMSC-GFP+ EN UN MODELO EXPERIMENTAL DE HEMIPARKINSON EN RATA WISTAR

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    Jéssica Paola ALCÁZAR ARZUZA

    2017-01-01

    Full Text Available Se evaluó el efecto del trasplante de hMSC-GFP+ en un modelo experimental de Enfermedad de Parkinson (EP en 27 ratas Wistar con tres grupos experimentales: control: animales sin cirugía, (CON n=7, lesionado: animales lesionados intracerebralmente con 6-OHDA a nivel de SNpc (LES n=10 y trasplantado: animales LES con trasplante de hMSC-GFP+ intraestriatalmente (LES-T n=10. Con el fin de evaluar la influencia del trasplante en el comportamiento motor, un mes después de la lesión, se desarrolló una batería comportamental compuesta por Test Neurológico (compuesto también por Pole Test y Test de Barra transversal, además, de inmunofluorescencia para células de SNpc con TH. Utilizando el test de Anova, se demostró una disminución en el número de giros en animales trasplantados ( p =0,005 , así como en el test neurológico ( p =0,0004 y en el Test de barra transversal, que colocan a este grupo en una posición intermedia con respecto a LES y CON. Existe una posible recuperación de la vía nigroestriatal mediada por el trasplante de hMSC-GFP+.

  3. Avaliação de impacto e processo de um modelo de grupoterapia cognitivo-comportamental para meninas vítimas de abuso sexual

    OpenAIRE

    Luísa Fernanda Habigzang

    2010-01-01

    Dois estudos avaliaram o impacto e o processo de um modelo de grupoterapia cognitivo-comportamental para 49 meninas vítimas de abuso sexual com idade entre 9 e 16 anos. O Estudo I avaliou: o impacto do modelo na redução de sintomas de depressão, stress, ansiedade, transtorno do estresse pós-traumático (TEPT) e crenças distorcidas sobre o abuso e o efeito do tempo de espera por tratamento nestes sintomas; a manutenção do impacto da grupoterapia após 6 e 12 meses do término; e os fatores predit...

  4. Modelos computacionais fuzzy e neuro-fuzzy para avaliarem os efeitos da poluição do ar

    OpenAIRE

    Chaves, Luciano Eustáquio

    2013-01-01

    O presente estudo teve por objetivo verificar a associação entre a exposição aos poluentes do ar e o número de internações hospitalares por asma e pneumonia. Para a verificação foi proposto desenvolver e validar modelos fuzzy (Mamdani) e neuro-fuzzy (Sugeno) e comparar qual dos modelos apresenta uma melhor eficácia para a predição de internações. A metodologia utilizada foi dividida em três módulos: limpeza e elaboração de dados, elaboração do modelo fuzzy (Mamdani) e elaboração do modelo neu...

  5. Fuzzy: modelo matemático do subjetivo

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    Heriberto Roman Flores

    1986-11-01

    Full Text Available This work discusses basic information about fundamental concepts in the theory of fuzzy sets, and presents a new view point of things existing in various specific studies in the areas of topology, vector space measurement and integration, statistics, etc. The objectives were: 1. Compare these new concepts with tradicional ones in the classical theory of sets and 2. Try, in the teaching form, to interpret this mathematical model which reflects, in a clearer way, on human behavior. O presente trabalho pretende ser uma divulgação básica dos conceitos fundamentais da Teoria de Conjuntos Fuzzy, como uma forma de mostrar um novo enfoque de Matemática, da qual já existem estudos específicos no terreno da Topologia, Espaços Vetoriais, Medida e Integração, Estatística, etc. Tem os seguintes objetivos: lo. comparar estes novos conceitos com os conceitos tradicionais da teoria de conjuntos clássica e; 2o. tentar de forma didática, interpretar este novo modelo matemático, que reflete, de maneira mais clara, o comportamento humano.

  6. EFEITO NEUROPROTETOR E COMPORTAMENTAL DO Hypericum perforatum EM UM MODELO ANIMAL DE DOENÇA DE PARKINSON

    OpenAIRE

    DÉBORA DALLA VECCHIA

    2013-01-01

    O objetivo deste estudo foi testar o potencial neuroprotetor do extrato alcoólico do Hypericum perforatum sobre neurônios dopaminérgicos de ratos lesionados pela toxina 6-hidroxidopamina (6-OHDA) como modelo animal de DP. Ratos tiveram 6-OHDA estereotaxicamente infundida no feixe prosencefálico medial, unilateralmente para o teste de comportamento rotatório e bilateralmente para os demais testes. O Hypericum perforatum foi administrado nas doses de 100, 200 e 400 mg/Kg por gavagem durante 35 ...

  7. Modelo biopsicossocial e formulação comportamental: compreendendo a cefaléia do tipo tensional Modelo biopsicosocial y formulación comportamental: comprendiendo la cefalea del tipo tensional The bio-psychosocial model and behavioral formulation: understanding the tension-type headache

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    Adriana Mayon Neiva Flores

    2008-03-01

    Full Text Available A cefaléia do tipo tensional constitui um tipo freqüente de dor de cabeça, que tende a ocasionar uma série de comportamentos de evitação, com prejuízos físicos, sociais e psicológicos aos indivíduos afetados. O presente trabalho descreve algumas contribuições do modelo biopsicossocial de saúde para a compreensão da cefaléia do tipo tensional, descreve os tratamentos mais freqüentemente oferecidos e discute as vantagens de modalidades terapêuticas que utilizam a formulação comportamental. Destaca-se a relevância da consideração de fatores psicossociais presentes nas formas mais comuns de evolução da cefaléia do tipo tensional, o que contribui para a elaboração de planos de tratamento mais eficientes e coerentes com uma proposta realmente sistêmica e idiográfica.La cefalea del tipo tensional constituye un tipo frecuente de dolor de cabeza, que tiene la tendencia a ocasionar una serie de comportamientos de evitación, con daños físicos, sociales y psicológicos a los individuos afectados. El presente trabajo describe algunas contribuciones del modelo biopsicosocial de salud para la comprensión de la cefalea del tipo tensional, describe los tratamientos más frecuentemente ofrecidos y discute las ventajas de modalidades terapéuticas que utilizan la formulación comportamental. Se destaca la relevancia de la consideración de factores psicosociales presentes en las formas más comunes de evolución de la cefalea del tipo tensional, lo que contribuye para la elaboración de planes de tratamiento más eficientes y coherentes con una propuesta realmente sistémica e idiográfica.Tension-type headache are a frequent source of complaints in health assistance units. It tends to cause avoidance behaviors with adverse consequences in physical, psychological and social aspects. Contributions from the Bio-Psychosocial perspective are described for a better understanding of the tension-type headache problem. Study also analyzes

  8. Modelo experimental comportamental e histológico da regeneração do nervo facial em ratos Behavioral and histologic experimental model of facial nerve regeneration in rats

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    Andrei Borin

    2006-12-01

    Full Text Available O estabelecimento de modelos experimentais é o passo inicial para estudos de regeneração neural. OBJETIVO: Estabelecer modelo experimental de regeneração do nervo facial. MATERIAIS E MÉTODOS: Ratos Wistar com secção completa e sutura do tronco do nervo facial extratemporal, com análise comportamental e histológica até 9 semanas. FORMA DE ESTUDO: Estudo prospectivo experimental. RESULTADOS: Progressiva recuperação clínica e histológica dos animais. CONCLUSÃO: Estabelecemos um método aceitável para o estudo de regeneração do nervo facial em ratos.To setup an experimental model is the first step to study neural regeneration. AIM: Setting up an experimental model on facial nerve regeneration. MATERIAL AND METHODS Wistar rats with complete sectioning and suturing of the extratemporal facial nerve trunk; with a behavioral and histological analysis for 9 weeks. STUD DESIGN: Experimental prospective study. RESULTS: Progressive clinical and histological recovery of the animals. CONCLUSION: Our method is acceptable to study facial nerve regeneration in rats.

  9. Modelo conceptual de datos difusos de triaje para emergencia hospitalaria representado con FuzzyEER

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    Wuilfredo Rangel

    2010-05-01

    Full Text Available El triaje de emergencia persigue desarrollar el proceso de valorización clínica preliminar para ordenar los pacientes según el nivel de urgencia o gravedad, antes de la atención médica, de forma que en una condición de saturación del servicio o disminución de recursos, los pacientes más graves sean tratados con prioridad. Un proceso de triaje presenta un alto grado de imprecisión o incertidumbre al momento de expresar el estado de salud de un paciente, en consecuencia puede haber dificultad y riesgo en la clasificación de las urgencias. En los servicios de emergencias de loshospitales públicos venezolanos, en especial el servicio de emergencia del Hospital Universitario de Caracas (HUC, seha evidenciado un incremento en el número de casos que se atienden, siendo una constante la saturación del servicio, lo cual imposibilita que los pacientes con prioridad de atención, sean tratados más rápidamente de forma oportuna y eficaz. En este trabajo se propone un modelo conceptual de datos difuso de triaje para el sector salud venezolano basado en el proceso de triaje hospitalario de la Sociedad Venezolana de Medicina de Emergencia y Desastres (SVMED, ya que un modelo de datos que contemple la representación de atributos difusos puede representar de mejor forma los requerimientos del sistema. El modelo propuesto utiliza la notación Entidad Relación con elementos difusos (FuzzyEER para la representación de las entidades y atributos con imprecisión. Dicho modelo será la base de un sistema automatizado de triaje que hará uso del lenguaje de consultas difusas FSQL (Fuzzy SQL.

  10. Análise comportamental e histológica de um modelo animal da doença de Parkinson em camundongos suíços

    OpenAIRE

    GARCEZ, Daniela Rosa

    2011-01-01

    A Doença de Parkinson (DP) é uma das doenças neurodegenerativas mais comuns relacionadas com a idade, e apresenta sintomatologia com alterações motoras clássicas que estão relacionadas com a degeneração dos neurônios dopaminérgicos da SNpc e a diminuição de dopamina no estriado. Modelos animais da DP são instrumentos importantes utilizados por pesquisadores para uma maior compreensão de mecanismos patológicos envolvidos na doença e para a ava...

  11. O CONSUMIDOR SOB A ÓTICA SÓCIO-PSICOLÓGICA: AVALIAÇÃO DE MODELO COMPORTAMENTAL COM EQUAÇÕES ESTRUTURAIS

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    Paulo Roberto da Costa Vieira

    2007-05-01

    Full Text Available ResumoEleitas áreas essenciais em Negócios, Economia e Psicologia Social, o comportamento e a tomada de decisão foram investigados por distintas abordagens, com vistas a identificar os seus elementos fundamentais e a lógica que os articula em conexão elaborada e intrincada. O presente trabalho não só discute as contribuições da Psicologia Social e da Economia relacionadas ao comportamento e à tomada de decisão, que maior influência exerceram sobre os pesquisadores de cada área, como também constrói, com base nessas contribuições acadêmicas, um modelo de comportamento do consumidor para avaliar a intenção e prever o comportamento de graduandos dos cursos de Administração e Relações Internacionais quanto à sua permanência em universidade privada sediada na cidade do Rio de Janeiro. A coleta de dados foi realizada por intermédio de questionário auto-administrado, com escala Likert de sete alternativas. Os resultados, gerados por meio da modelagem de equações estruturais, confirmaram a consistência do modelo proposto. ABSTRACT Both behavior and decision taking have been chosen essential areas by Social Psychology, by Economics and by Business that were researched by approaches multiple with the purpose of detection of its fundamental elements and the logic that it articulates them by means of an elaborated and intricate connection. This paper discusses the most important contributions that they have exerted influence on researchers from Psychology Social and Economics related to behavior and to decision taking process, as well as it builds a model of consumer behavior with base in these academic contributions to evaluate intentions and to foresee the behavior of college students of the courses of Business and International Relations as to their permanency in headquartered private university in Rio de Janeiro city. The collection of data has been done by structured questionnaire self-administered, with Likert scale of

  12. Esta mediada la gravedad delictiva y cronicidad de los delincuentes juveniles por la competencia cognitivo-comportamental?

    National Research Council Canada - National Science Library

    Farina, Francisca; Arce, Ramon; Vazquez, Maria Jose

    2014-01-01

    .... A este respecto, los modelos de Riesgo-Necesidades-Responsividad (RNR) y de la criminologia del desarrollo preven que el nivel de problemas de conducta este asociado al grado de desarrollo de la competencia cognitiva y comportamental...

  13. Establishing the risk of neonatal mortality using a fuzzy predictive model Modelo preditivo fuzzy para estabelecer o risco de morte neonatal

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    Luiz Fernando C. Nascimento

    2009-09-01

    Full Text Available The objective of this study was to develop a fuzzy model to estimate the possibility of neonatal mortality. A computing model was built, based on the fuzziness of the following variables: newborn birth weight, gestational age at delivery, Apgar score, and previous report of stillbirth. The inference used was Mamdani's method and the output was the risk of neonatal death given as a percentage. 24 rules were created according to the inputs. The validation model used a real data file with records from a Brazilian city. The receiver operating characteristic (ROC curve was used to estimate the accuracy of the model, while average risks were compared using the Student t test. MATLAB 6.5 software was used to build the model. The average risks were smaller in survivor newborn (p O objetivo do artigo foi avaliar o uso da lógica fuzzy para estimar possibilidade de óbito neonatal. Desenvolveu-se um modelo computacional com base na teoria dos conjuntos fuzzy, tendo como variáveis peso ao nascer, idade gestacional, escore de Apgar e relato de natimorto. Empregou-se o método de inferência de Mamdani, e a variável de saída foi o risco de morte neonatal. Criaram-se 24 regras de acordo com as variáveis de entrada, e a validação do modelo utilizou um banco de dados real de uma cidade brasileira. A acurácia foi estimada pela curva ROC; os riscos foram comparados pelo teste t de Student. O programa MATLAB 6.5 foi usado para construir o modelo. Os riscos médios foram menores para os que sobreviveram (p < 0,001. A acurácia do modelo foi 0,90. A maior acurácia foi com possibilidade de risco igual ou menor que 25% (sensibilidade = 0,70, especificidade = 0,98, valor preditivo negativo = 0,99 e valor preditivo positivo = 0,22. O modelo mostrou acurácia e valor preditivo negativo bons, podendo ser utilizado em hospitais gerais.

  14. Modelos

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    Luis Argudín

    2011-01-01

    Full Text Available Este texto es una reflexión en torno a la categoría de modelos, que piensa con modelos, a partir de los modelos y para los modelos; también se piensa, se interpreta, se revisa, el significado del modelo. Y esto no sólo por lo que estos exigen su lugar desde la tradición artística, sino por lo que significan para la estética, y aún para la filosofía y la ciencia, pues de lo que se trata es de un ir y venir del pensamiento entre la materialidad y el ejercicio de pensar el oficio.

  15. Terapia comportamental construtiva: uma outra face da clínica comportamental

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    Luc Vandenberghe

    2007-12-01

    Full Text Available Este artigo apresenta a terapia comportamental construtiva conforme elaborada por Beata Bakker-de Pree. A abordagem, desenvolvida nos Países Baixos, traz uma filosofia do processo terapêutico que é compatível com a de várias terapias comportamentais conhecidas. Acrescenta uma perspectiva valiosa em sua descrição explícita de alguns ingredientes importantes do trabalho clínico, que não estão em destaque nos outros modelos comportamentais, sendo estas a técnica de diferenciação livre e a análise funcional do comportamento saudável do cliente.

  16. Fuzzy model to predict porosity thought conventional well logs; Modelo Fuzzy para predicao de porosidade via perfis convencionais de poco

    Energy Technology Data Exchange (ETDEWEB)

    Mimbela, Renzo R.F.; Silva, Jadir C. [Universidade Estadual do Norte Fluminense (UENF), Macae, RJ (Brazil). Lab. de Engenharia e Exploracao do Petroleo (LENEP)

    2004-07-01

    The well logs have a great applicability in the search and evaluation of hydrocarbon. In this work we calculate porosities of the Namorado field with help of the 'Fuzzy Rule'. This is done segmenting jointly both the neutron ({phi}{sub N}) and density ({phi}{sub d}) porosities logs in groups with better relation of internal linearity. The grouping is processed keeping the best number of groups, which is efficiently chosen by a criterion related to the minimum value of 'Fuzzy Validity' measurement. As a first step, we choose the {phi}{sub N} and {phi}{sub d} values only at that depths where cores exist. To prevent picking measurements errors a previous data filtering is performed by selecting only the and their correspondent values that exhibit a maximum discrepancy with core porosity ({phi}{sub C}) around 5pu (porosity unit). A conventional average porosity {phi}{sub MED}, mixing {phi}{sub N} and {phi}{sub d} is calculated at each point, concerning its own lithological and fluids characteristics. Finally, an inversion algorithm is applied to indicate the best curve curve that fit linearly {phi}{sub C} vs. {phi}{sub MED}, {phi}{sub C} vs. {phi}{sub D} and {phi}{sub C} vs. {phi}{sub N}, and at the same time determines the values of the constants to be extrapolated in order to calculate the porosity of the whole field. (author)

  17. Aplicação de um modelo fuzzy DEA para priorizar modos de falha em sistemas nucleares

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    Pauli Adriano de Almada Garcia

    2009-08-01

    Full Text Available Neste artigo apresenta-se a aplicação de um modelo híbrido, baseado na análise envoltória de dados e em conjuntos fuzzy, para estabelecer uma priorização dos modos de falha levantados numa análise dos modos e efeitos de falha. O objetivo principal é ilustrar a aplicabilidade da modelagem para analisar sistemas complexos, como o sistema de controle químico e volumétrico de uma usina nuclear do tipo água pressurizada, onde uma grande quantidade de modos de falha deve ser avaliada. O modelo apresentado possibilita tratar variáveis linguísticas, i.e., permite que se tratem as opiniões de especialistas de modo mais efetivo num contexto de análise de riscos industriais quando há poucos dados disponíveis, como pode ocorrer em projetos com inovação tecnológica. Os resultados obtidos demonstram o potencial e a viabilidade de se utilizar uma modelagem híbrida para se estabelecer uma ordem de prioridade entre os diferentes modos de falha associados a um sistema complexo.In this paper one presents a data envelopment analysis and fuzzy sets based hybrid model application, in order to establish a priority ranking for the failure modes evaluated in a failure mode and effect analysis. The main objective is to present the applicability of this hybrid model to analyze complex systems, as the chemical and volumetric control system of a pressurized water reactor power plant, where a great bunch of failure modes must typically be evaluated. The presented modeling makes it possible the consideration of linguistic variables, i.e., it permits that one considers most effectively expert opinion in a risk analysis context when scarce data is available, as may occur in the plant design phase. The results obtained demonstrated the powerfulness and the viability of use of the proposed hybrid modeling to establish a priority ranking among many failure modes concerning a complex system.

  18. Grupoterapia cognitivo-comportamental para meninas vítimas de abuso sexual: descrição de um modelo de intervenção Cognitive-behavioural group therapy for sexual abused girls: description of an intervention model

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    Luísa F. Habigzang

    2006-01-01

    Full Text Available O abuso sexual contra crianças e adolescentes é uma forma de violência que pode desencadear disfunções cognitivas, emocionais e comportamentais que necessitam intervenção psicológica. O tratamento das vítimas e suas famílias é um desafio para a prática de psicólogos, devido à complexidade do fenômeno. O presente trabalho tem como objetivo descrever um processo de grupoterapia cognitivo-comportamental desenvolvido para casos de abuso sexual. As técnicas utilizadas são apresentadas a partir da experiência das autoras em uma pesquisa que objetivou avaliar a efetividade deste modelo. Participaram do estudo 10 meninas vítimas de abuso sexual intrafamiliar com idade entre 9 e 13 anos. Os resultados apontaram que o processo de grupoterapia contribui para a reestruturação de crenças, reações emocionais e comportamentais disfuncionais. O grupo representou um elo na rede de apoio social e afetiva das meninas e promoveu melhoras na qualidade de vida.The sexual abuse against children and adolescents is a violence form that can unchain cognitive, emotional, and behavioural dysfunctions that will need psychological intervention. The victim’ and families’ treatment are a challenge for the psychologists’ practice, due to the complexity of the phenomenon. The present study aims to describe a cognitive behavioral group therapy process developed for cases of sexual abuse. The techniques are based on previous experiences in a research that aimed at to evaluate the effectiveness of the model. Ten 9 to 13 year old girls, victims of intrafamilial sexual abuse participate in the study. The results pointed out to the contribution of the group therapy process to the restructuring of faiths, emotional reactions, and behavioral dysfunctions. The group represented a link in the girls’ social and emotional support network and improved their life quality.

  19. MODELOS DE PROGRAMACIÓN LINEAL FUZZY EN LA FORMULACIÓN DE ALIMENTOS PARA ANIMALES

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    David M. Morales

    2012-01-01

    Full Text Available En este trabajo se exponen modelos del Problema de la Dieta en producciones industriales de alimento animal con datos precisos e imprecisos en sus componentes, obteniéndose ventajas económicas significativas resultantes cuando se toma en consideración la imprecisión en todos o algunos componentes del modelo matemático respecto a la vía clásica empleada tradicionalmente a nivel mundial. Fueron analizados un grupo significativo de fórmulas correspondientes a un amplio surtido de productos elaborados en fábricas cubanas resultando, en todos los casos, el lo gro de los nutrientes especificados para cada especie a más bajo costo de producción por concepto de empleo de ingredientes en fórmula. La imprecisión se introduce a partir de posibles rangos de variación de pérdidas en los ingredientes en el proceso de manufactura o por el posible rango de variación en nutrientes de los ingredientes componentes de la mezcla.

  20. Validação de um modelo linguístico fuzzy para classificar a gravidade do desvio fonológico Validation of a fuzzy linguistic model to classify the severity of phonological disorder

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    Ana Rita Brancalioni

    2012-06-01

    Full Text Available OBJETIVO: verificar se os critérios adotados no Modelo Linguístico Fuzzy, para classificar a gravidade do Desvio Fonológico (DF, são empregados na prática fonoaudiológica e se estão de acordo com a finalidade do Modelo. Além disso, analisar a concordância entre a gravidade do DF classificada pelo Modelo e a julgada por fonoaudiólogas, bem como, verificar as principais dificuldades. MÉTODO: a pesquisa foi constituída por duas amostras. A primeira composta por um número representativo de sistemas fonológicos desviantes (n=52 classificados pelo Modelo quando o mesmo foi proposto. A segunda por dois grupos de fonoaudiólogas GF-I e GF-II. Foi solicitado que as fonoaudiólogas julgassem a gravidade dos sistemas fonológicos desviantes, mapeados no Modelo Implicacional de Complexidade de Traços - MICT, em Grave, Moderado-Grave, Moderado-Leve e Leve. Em seguida os critérios e as principais dificuldades foram descritas em um questionário. Empregou-se a Estatística Kappa, com nível de significância de pPURPOSE: to check if the criteria adopted from the Fuzzy Linguistic Model to classify the severity of Phonological Disorder (PD are employed in the practice of speech and language therapists and whether they are in conformity with the purpose of such model. It is furthermore intended to analyze the acquiescence between PD severity classified by the Model and the one deemed by speech and language therapists and check the main difficulties. METHOD: the study included two samples. The first one was comprised of a representative number of deviating phonological systems (n=52 and classified by the Model when it was proposed. The second one comprised two groups of speech and language therapists GF-I and GF-II. The speech and language therapists were asked to deem the severity of deviating in phonological systems, mapped in the Implicational Model of Feature Complexity - MICT as Severe, Moderate-Severe, Moderate-Mild, and Mild. Next, criteria

  1. MODELO BORROSO PARA EVALUAR LOS FACTORES QUE AFECTAN LA PRODUCTIVIDAD EN LA PYMES // FUZZY MODEL TO ASSESS FACTORS AFFECTING PRODUCTIVITY IN PYME

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    Roxana Martínez Sánchez

    2010-06-01

    Full Text Available En Venezuela, las pequeñas y medianas empresas (PYME contribuyen considerablemente a la actividad económica y son un gran generador de empleo. Este trabajo plantea el desarrollo de un modelo borroso que permita evaluar los factores de producción que afectan la productividad, con el fin de estimar su impacto y minimizarlos para que de esta manera la empresa no pierda su nivel del aprovechamiento de los recursos. La importancia del mismo radica en la utilización de la lógica borrosa para la evaluación del efecto de factores como costo de producción, producto y satisfacción del cliente en la productividad de las PYME.// Abstract: In Venezuela, small- and medium sized companies PYME contribute considerably to economic activity and are a great employment generator. This article state a fuzzy model development which permit to evaluate the production factors that affect productivity, in order to estimate and minimize their impact and, in this way the company dosen‘t loose the use or resource level. The importance of this development lies in the use of fuzzy logic to evaluate the effect of factors like production and client satisfaction in PYME‘s productivity.

  2. Um modelo de integração de lógica Fuzzy a banco de dados

    OpenAIRE

    Biazin, Alexandre

    2002-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós -Graduação em Computação. Este trabalho apresente as várias pesquisas realizadas em Lógica Fuzzy integrada ao SGBD (Sistemas Gerenciadores de Banco de Dados), expondo os métodos e práticas utilizadas para integração das duas tecnologias. Através da inclusão de uma máquina de inferência fuzzy interna ao SGBD, permite consultar dados em forma nebulosa. Este procedimento utiliza entradas e s...

  3. Grupoterapia cognitivo-comportamental para crianças e adolescentes vítimas de abuso sexual

    OpenAIRE

    Luísa Fernanda Habigzang; Fernanda Helena Stroeher; Roberta Hatzenberger; Rafaela Cassol Cunha; Michele da Silva Ramos; Sílvia Helena Koller

    2009-01-01

    OBJETIVO: Avaliar os efeitos do modelo de grupoterapia cognitivo-comportamental para crianças e adolescentes do sexo feminino vítimas de abuso sexual. MÉTODOS: Foi utilizado delineamento não-randomizado intragrupos de séries temporais. Crianças e adolescentes do sexo feminino com idade entre nove e 16 anos (N=40) da região metropolitana de Porto Alegre (RS), foram clinicamente avaliadas em três encontros individuais, de 2006 a 2008. A grupoterapia consistiu de 16 sessões semi-estruturadas. In...

  4. A influência da observação do comportamento sensível na sensibilidade comportamental

    OpenAIRE

    Gutierrez, Eduarda Barbirato Sette

    2014-01-01

    A pesquisa tem por objetivo medir a sensibilidade comportamental em situações em que há observação de um modelo deixando de seguir a regra. Para isso, foi apresentada a mesma regra nas três condições, explicando que o sujeito deveria apontar para a imagem do objeto para ganhar pontos e obter o maior número de pontos possíveis ao final. Em seguida, foi apresentado uma sequência de slides com três figuras sendo uma figura de um objeto (O), uma figura de um animal (A) e uma figura de um humano (...

  5. A FORMAÇÃO COMPORTAMENTAL DE AUDITORES CONTÁBEIS INDEPENDENTES: UM ESTUDO MULTICASO

    Directory of Open Access Journals (Sweden)

    Luiz Alberton

    2002-11-01

    Full Text Available RESUMO
    O presente artigo tem como objetivo apresentar uma proposta de um modelo de formação comportamental para auditores contábeis independentes. Deste modo, inicialmente, discorre-se sobre os aspectos que devem ser considerados pelo profissional responsável pela gestão das pessoas nas organizações que prestam serviços de auditoria contábil independente, e do perfil destas pessoas requerido pelas empresas. Em seguida são identificadas as teorias que tratam da gestão de pessoas nas organizações, especificamente nos processos de recrutamento e seleção, capacitação e avaliação de desempenho. As empresas buscam profissionais com talentos e, principalmente, que saibam manter o equilíbrio entre a razão e a emoção no ambiente de trabalho. Na literatura que versa sobre a profissão do auditor contábil, é dada muita ênfase aos aspectos técnicos, tratando superficialmente ou renegando os aspectos comportamentais considerados importantes ao desempenho destes profissionais. Para confirmar essas afirmações e dar suporte ao delineamento do modelo, é realizada uma pesquisa de campo com os responsáveis pela gestão de pessoas em quatro empresas internacionais de auditoria contábil independente, que fazem parte das big five, e em uma empresa nacional. Assim, para o delineamento do modelo de formação, a ênfase desta pesquisa recai sobre os aspectos de liderança, comunicação, motivação, negociação, coaching, mentoring, administração de conflitos, trabalho em equipe, técnica de entrevista, análise transacional e de programação neurolingüística, que podem ser utilizados para o desenvolvimento de auditores contábeis independentes, de forma que possam melhorar suas condições de competitividade e empregabilidade. Portanto, são incorporados esses conceitos como ponto de partida para o delineamento de um modelo de formação comportamental

  6. Fuzzy Boundary and Fuzzy Semiboundary

    OpenAIRE

    Athar, M.; Ahmad, B.

    2008-01-01

    We present several properties of fuzzy boundary and fuzzy semiboundary which have been supported by examples. Properties of fuzzy semi-interior, fuzzy semiclosure, fuzzy boundary, and fuzzy semiboundary have been obtained in product-related spaces. We give necessary conditions for fuzzy continuous (resp., fuzzy semicontinuous, fuzzy irresolute) functions. Moreover, fuzzy continuous (resp., fuzzy semicontinuous, fuzzy irresolute) functions have been characterized via fuzzy-derived (resp., fuzz...

  7. Uma metodologia baseada no modelo SCOR® e em inferência fuzzy para apoiar a avaliação de desempenho de fornecedores

    Directory of Open Access Journals (Sweden)

    Francisco Rodrigues Lima Junior

    Full Text Available Resumo Na literatura acadêmica, tanto a seleção quanto a avaliação para o desenvolvimento de fornecedores vêm sendo abordadas como um problema de tomada de decisão no qual um conjunto de fornecedores é avaliado com base em múltiplos critérios de desempenho. Embora já existam centenas de metodologias quantitativas voltadas para o apoio à etapa de seleção de fornecedores, a avaliação de desempenho objetivando o desenvolvimento de fornecedores ainda é pouco explorada na literatura. Além disso, a maioria das abordagens existentes apresentam algumas limitações devido ao uso de técnicas inadequadas. Diante disso, este estudo propõe uma nova metodologia de apoio à avaliação de desempenho de fornecedores, desenvolvida a partir da combinação de sistemas de inferência fuzzy com alguns indicadores de desempenho do modelo SCOR® (Supply Chain Operations Reference. A abordagem proposta permite avaliar aspectos relacionados ao desempenho das operações e aos custos do fornecedor. Os resultados dessa avaliação são usados para categorizar os fornecedores com desempenho similar e indicar diretrizes adequadas para o gerenciamento de cada grupo de fornecedores. Visando demonstrar o processo de modelagem e uso, bem como avaliar a adequabilidade da proposta, foi realizada uma aplicação piloto que envolveu a avaliação de 10 fornecedores de uma empresa do setor automotivo. Quatro sistemas de inferência fuzzy foram implementados usando MATLAB® e parametrizados de acordo com os julgamentos de dois funcionários da empresa. Também foi realizada uma análise de sensibilidade para verificar a consistência dos resultados fornecidos por esses sistemas. Os resultados obtidos reforçam a adequação da metodologia proposta e das parametrizações realizadas durante a implementação. Quando comparada com as metodologias de avaliação de fornecedores encontradas na literatura, esta abordagem apresenta vantagens como o apontamento de

  8. Modelo de Gestión de los Recursos Humanos con base en la teoría de los subconjuntos borrosos (Human Resource Management Model based on Fuzzy Subsets Theory

    Directory of Open Access Journals (Sweden)

    Lourdes Souto Anido

    2016-11-01

    Full Text Available Resumen. Los Recursos Humanos constituyen los únicos elementos vivos presentes en todo tipo de organización, quienes, a partir de sus conocimientos, habilidades y motivaciones, impulsan a las empresas a ser competitivas y a alcanzar sus metas. En aras de lograr dicho objetivo se hace necesario contar con herramientas que ayuden a que el proceso de toma de decisiones concerniente a la gestión de los mismos sea lo más certeros y objetivos. El presente trabajo propone un modelo de gestión de recursos humanos que integra herramientas basadas en la teoría de los subconjuntos borrosos. La investigación se encuentra estructurada en tres epígrafes. El primero analiza los modelos utilizados en Cuba para gestionar los recursos humanos. El segundo presenta el Modelo de Gestión de los Recursos Humanos que se propone, para finalmente, en un tercer epígrafe proceder a validarlo. La novedad del trabajo que se propone, radica en la integración de herramientas de la teoría de los subconjuntos borrosos en los procesos claves de la Gestión de los Recursos Humanos. Entre sus aportes se encuentran: la aplicación del método de alisado exponencial borroso a la planeación del personal, la extrapolación de un modelo de asignación resuelto a través del algoritmo húngaro a la formación del personal, así como la construcción de un sistema de indicadores borrosos para la evaluación de la Gestión de los Recursos Humanos. La propuesta fue validada a través de aplicaciones parciales en empresas seleccionadas así como con criterio de expertos. English abstract. Human resources are the only living elements present in all types of organizations who, from their knowledge, skills and motivations driving companies to be competitive and achieve their objectives and goals. In order to achieve this objective it is necessary to have tools that help the decision-making process regarding the management of human resources is as accurate and objective as possible

  9. Fuzzy contractibility

    OpenAIRE

    GÜNER, Erdal

    2007-01-01

    Abstract. In this paper, .rstly some fundamental concepts are included re- lating to fuzzy topological spaces. Secondly, the fuzzy connected set is intro- duced. Finally, de.ning fuzzy contractible space, it is shown that X is a fuzzy contractible space if and only if X is fuzzy homotopic equivalent with a fuzzy single-point space.

  10. Três Tópicos em economia comportamental

    OpenAIRE

    2013-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Sócio-Econômico, Programa de Pós-Graduação em Economia, Florianópolis, 2013. Esta dissertação apresenta três tópicos em economia comportamental. O primeiro trata de verificar se há correlação entre orientação de valor social e escolha intertemporal. Observou-se que indivíduos mais pró-sociais tendem a ser mais pacientes. O segundo trata de alterar o teste conhecido por CRT (Cognitive Reflexion Test), objetivando verifi...

  11. Model for qualitative evaluation of risk in ducts through the fuzzy logic in conformity with the methodology of IBR; Modelo para avaliacao qualitativa do risco em oleodutos atraves da logica fuzzy segundo a metodologia da IBR

    Energy Technology Data Exchange (ETDEWEB)

    Mishina, Koje Daniel Vasconcelos [Centro Federal de Educacao Tecnologica da Bahia (CEFET-BA), Salvador, BA (Brazil); Silva, Jose Felicio da; Silva, Joao Bosco de Aquino [Universidade Federal da Paraiba (UFPb), Joao Pessoa, PB (Brazil)

    2006-07-01

    This work considers a system for qualitative evaluation of the terrestrial risk in pipelines, based in the methodology of the Inspection Based on Risk and the Fuzzy Logic. For this one developed a matrix of risk associated with the oil transport and its derivatives, that define the type of tracking and the regularity of inspection with Pig Instrumented in function of the level of risk found in the stretch in study. This matrix of risk considers the probabilities and the consequences associates to the damage for corrosion. The evaluation of the considered system was based on the consistency of the found levels of risk, in relation to that it would be found in the practical one. The gotten results had demonstrated that the use of the methodology of the IBR and the Fuzzy Logic can be used jointly as one sufficiently efficient alternative technique in the evaluation of risk in corroded pipe-lines. (author)

  12. Segurança comportamental no CAR-Setúbal

    OpenAIRE

    Rodrigues, Paula

    2014-01-01

    Pós-Graduação em Segurança e Higiene no Trabalho No âmbito da conclusão do 1º ano do curso de Mestrado em Segurança e Higiene no Trabalho (SHT), a fim de realizar o projeto final de curso em contexto real de trabalho tendo em concordância as necessidades da empresa em causa, e o meu interesse pessoal no tema, foi escolhido como foco principal a segurança comportamental. Este é um tema muito pertinente e inovador para o primeiro ano do Mestrado em SHT no Instituto Politécnico de Setúbal o q...

  13. Evaluación de la vulnerabilidad a la degradación por erosión en suelos mediante un modelo de lógica borrosa Assessment of soil vulnerability to erosion by a fuzzy logic model

    Directory of Open Access Journals (Sweden)

    I. Melendez-Pastor

    2010-01-01

    Full Text Available Se presenta un modelo simplificado para evaluar la vulnerabilidad de suelos a proce­sos degradativos, tales como la erosión. Es­tá basado en el empleo de la lógica borrosa para operar con variables predictivas con­tinuas estimadas a partir de imágenes de te­ledetección y modelos digitales de eleva­ciones. Combina variables explicativas re­lativas al estado de la cubierta vegetal y di-versos parámetros topográficos. Las esti­maciones se realizan mediante un sistema de decisión implementado en un sistema de información geográfica (SIG, obteniéndo­se mapas de vulnerabilidad que pueden ser actualizados con nuevas imágenes de saté­lite. La zona estudiada se localiza en el su­reste peninsular, caracterizado por un clima Mediterráneo semiárido. Se estimaron altas tasas de vulnerabilidad para todas las esti­maciones realizadas, en relación a los um­brales máximos y mínimos esperables. Se estudio la respuesta de los cambios de vul­nerabilidad en relación a los cambios de clases de erosión actual a potencial según el modelo USLE. Se estimó una alta corre­lación entre los cambios de clases de ero sión y los cambios de estimaciones de vul­nerabilidad.A simplified fuzzy logic model to assess soil vulnerability to degradation processes, such as soil erosion, is presented. The model is based on the use of fuzzy logic to operate with explanatory continuous variables esti­mated from remote sensing images and digi­tal elevation models. It combines explana­tory variables concerning the state of vege­tation cover and topographic parameters. The estimations are made by a decision sys­tem implemented in a geographic informa­tion system (GIS. Output vulnerability maps can be updated with new satellite im­ages. The study area is located on the south­east Iberian Peninsula, characterized by a semiarid Mediterranean climate. It was found high vulnerability for all estimations in relation to the expected maximum and minimum

  14. Tratamento cognitivo-comportamental de grupo na fobia social: resultados de 12 semanas Cognitive-behavioral group treatment in social phobia: 12-week outcome

    Directory of Open Access Journals (Sweden)

    Gustavo J. Fonseca D'El Rey

    2008-01-01

    Full Text Available CONTEXTO: A fobia social é um dos transtornos mentais mais prevalentes na população geral. A terapia cognitivo-comportamental é o modelo não-farmacológico mais estudado nesse transtorno de ansiedade. OBJETIVOS: Este estudo teve como objetivo verificar a efetividade da terapia cognitivo-comportamental de grupo em pacientes com fobia social generalizada. MÉTODOS: Trinta e um pacientes com diagnóstico de fobia social generalizada foram randomicamente distribuídos em dois grupos: um de terapia cognitivo-comportamental de grupo - TCCG (n = 15 e um grupo-controle na Lista de Espera - LE (n = 16. Os pacientes preencheram quatro escalas de avaliação (Inventário de Fobia Social, Escala de Medo de Avaliação Negativa, Inventário de Ansiedade Beck e Escala de Impressão Clínica Global na semana 1 de tratamento e na semana 12. RESULTADOS: Em todas as medidas de avaliações, ao final de 12 semanas, os pacientes que receberam TCCG apresentaram melhoras superiores aos da LE. CONCLUSÕES: Neste ensaio clínico randomizado, simples-cego, a terapia cognitivo-comportamental de grupo foi superior à Lista de Espera no tratamento da fobia social generalizada.BACKGROUND: Social phobia is a widespread mental disorder in the general population. Cognitive-behavioral therapy is the most thoroughly studied nonpharmacologic approach in this anxiety disorder. OBJECTIVES: The aim of this study is to assess the effectiveness of cognitive-behavioral group therapy in patients with generalized social phobia. METHODS: Thirty one patients with diagnosis of generalized social phobia were randomly allocated in two groups. One group of cognitive-behavioral group therapy - CBGT (n = 15 and one Waiting List control group - WL (n = 16. The patients completed four rating scales (Social Phobia Inventory, Fear of Negative Evaluation Scale, Beck Anxiety Inventory and Clinical Global Impression Scale in the weeks 1 and 12. RESULTS: In all rating scales in the week 12 of

  15. Modelos psicológicos del cambio: de los modelos centrados en el indivi-duo a los modelos psicosociales en psicología de la salud

    OpenAIRE

    Alvarez, Leonardo

    2013-01-01

    El presente artículo tiene el propósito de revisar las características del proceso de cambio comportamental desde algunos modelos teóricos que se han concebido desde una perspectiva “psicologizante” o “individual” señalando los elementos a los cuales dan primacía en detrimento de otros, propios de alternativas “psicosociales”, en las cuales la articulación entre lo individual y lo social se convierte en el contexto de emergencia del cambio de actitudes, comportamientos y hábitos. Se hace una ...

  16. DESARROLLO DE UN MODELO DE RECONOCIMIENTO Y CLASIFICACIÓN DE ROSTRO UTILIZANDO TÉCNICAS DE INTELIGENCIA ARTIFICIAL (LAMDA-FUZZY

    Directory of Open Access Journals (Sweden)

    ÓSCAR EDUARDO GUALDRÓN GUERRERO

    2012-12-01

    Full Text Available En este artículo se presenta una estrategiapara el reconocimiento de imágenes estáticas,específicamente de reconocimiento facial a través deuna técnica novedosa y reciente de clasificación quese llama método Lamda (Learning Algorithm for MultivariableData Analysis. La estrategia consta de tresetapas que conforman el modelo de reconocimientoy clasificación presentado en este trabajo, la primera,denominada pre-procesamiento, es la encargadade adecuar las imágenes con procesos de filtrado ycomprensión. La segunda etapa es la correspondientea la extracción de características para obtener losatributos de las imágenes y diferenciarlas de maneracorrecta. Finalmente, la etapa de clasificación, que esla que relaciona las clases con las imágenes analizadascon la técnica Lamda

  17. Tratamento da Obesidade: Modelo de Grupo Baseado em Terapia Cognitivo Comportamental

    Directory of Open Access Journals (Sweden)

    Júlia Berger Guimarães

    2011-04-01

    Full Text Available Introdução: o tratamento da obesidade em grupos (GO tem um resultado variável conforme a metodologia utilizada, chegando a se obter uma perda ponderal (PP de até 10% em 3-6 meses. Embora muito utilizada na atenção primária, esta abordagem tem sido pouco estudada. Objetivo: avaliar a evolução dos pacientes em acompanhamento em um GO, correlacionando seu perfil com sua permanência no grupo e a PP obtida. Também se buscou comparar os resultados com a literatura. Materiais e Métodos: estudo não controlado, quase-experimento, com intervenção. Foram avaliados os pacientes que freqüentaram pelo menos uma reunião do GO na Unidade Básica de Saúde HCPA no período de outubro de 2007 a outubro de 2008. A busca ao GO foi por demanda espontânea ou por indicação do médico na consulta. Em encontros semanais, com duração de 90 minutos, foram utilizadas técnicas de educação cooperativa, cognitivo-comportamentais e motivacionais para PP, adesão à dieta e atividade física, aferido peso semanalmente, discutidos os resultados em grupo e fornecida dieta hipocalórica. Os pacientes foram classificados em: não aderentes (NA e aderentes (A conforme tenham participado de ? 2 ou ? 3 encontros, respectivamente. Foram avaliados a PP e possíveis fatores relacionados a isso. Os resultados são descritivos e em comparações utilizando Teste T, Mann Whitney, Qui-quadrado e correlação de Spearmann. Nível de significância de 5%. Resultados: foram avaliados 69 pacientes, 62 (89,9% do sexo feminino, idade de 49,2±13,2; 33 classificados como NA e 36 como A. Comparando estes dois grupos, observamos a diferença quanto ao peso inicial: NA= 98,7 ± 24,7 e A= 88,4 ± 16,8, p< 0,05; e quanto ao percentual de mulheres: NA= 26 (81,3% e A= 35 (97,2%, p< 0,05; e semelhança quanto idade, escolaridade, cor e estado civil. Houve correlação entre o número de reuniões e a PP (r= (-0,61, p< 0,0001. Nos 20 participantes com permanência ? 12 semanas observou-se PP média de 6,63 Kg. Conclusões: o GO obteve um bom resultado para os pacientes mais aderentes e parece ser mais adequado ao tratamento das mulheres e indivíduos com menores graus de obesidade. O ideal será a inclusão de um grupo controle em um próximo estudo.

  18. Model of spatial analysis of electric power market using the Fuzzy C-Means technical classification; Modelo de analise espacial de mercado de energia eletrica utilizando a tecnica de classificacao Fuzzy C-Means

    Energy Technology Data Exchange (ETDEWEB)

    Neto, J.C. [Companhia Energetica de Goias (CELG-D), Goiania, GO (Brazil)], E-mail: joao.cn@celg.com.br; Lima, W.S. [Votorantim Siderurgia, Resende, Rio de Janeiro, RJ (Brazil). Gerencia Geral de Tecnologia], E-mail: wagner.lima@vmetais.com.br

    2009-07-01

    The power distribution companies live with an antagonistic reality: an increasing energy demand, due to steady economic and population growth, and a limitation on their financial resources to expand its network. Therefore, it is essential an improvement in activity of planning of the power distribution system trying to improve the application of available resources. In this context fits the application of Geographic Information System combined with clustering techniques and classification in order to enhance the planning process, giving the planner a more complete picture of the consumer market by the distributor. This paper presents a system that makes use of Geographic Information System combined with the technique of clustering and classification Fuzzy C-Means, with the aim of analyzing the distribution of network load and the performance of the technique. Each group performed leads to a spatial representation (scenario). This, together with an index measuring the performance of the group (intra-group and inter-group) implemented in this work, provides a favorable environment for spatial analysis of the electric power market.

  19. Fuzzy Set Field and Fuzzy Metric

    OpenAIRE

    Gebru Gebray; B. Krishna Reddy

    2014-01-01

    The notation of fuzzy set field is introduced. A fuzzy metric is redefined on fuzzy set field and on arbitrary fuzzy set in a field. The metric redefined is between fuzzy points and constitutes both fuzziness and crisp property of vector. In addition, a fuzzy magnitude of a fuzzy point in a field is defined.

  20. Ciclo de vida organizacional pautado no modelo de Lester, Parnell e Carraher (2003 e na lógica fuzzy: classificação de empresas de um segmento industrial de Santa Catarina

    Directory of Open Access Journals (Sweden)

    Ilse Maria Beuren

    2012-06-01

    Full Text Available Neste estudo, objetiva-se identificar os estágios do ciclo de vida organizacional pautados no modelo de Lester, Parnell e Carraher (2003 das empresas do segmento industrial de máquinas, aparelhos e materiais elétricos do estado de Santa Catarina. Pesquisa descritiva, com abordagem quantitativa, foi realizada por meio de levantamento com aplicação de questionário aos gestores das empresas. A população constituiu-se das 264 empresas desse segmento econômico, listadas na Secretaria da Fazenda do Estado de Santa Catarina, e a amostra não aleatória das 40 empresas que responderam a pesquisa. As variáveis de identificação dos estágios de ciclo de vida utilizadas no questionário foram extraídas de Lester, Parnell e Carraher (2003. Os dados da pesquisa foram submetidos à técnica estatística denominada lógica fuzzy. Os resultados da pesquisa demonstraram que 57,5% das empresas foram classificadas no estágio do nascimento, 15% do, 7,5% da Maturidade, 10% do rejuvenescimento e 10% do declínio. Concluiu-se que determinados estágios do ciclo de vida organizacional estão próximos uns dos outros e que não se pode perceber claramente uma progressão determinista nas fases do ciclo de vida, como uma sequência única, definitiva e irreversível, no sentido tradicional biológico.

  1. Efecto diferencial del modelo sobre la conducta asertiva de drogodependientes en abstinencia

    OpenAIRE

    2016-01-01

    Falta palabras clave El marco teórico elegido para el desarrollo de esta tesis es el Modelo Cognitivo-Comportamental del proceso de prevención de recaída de Marlatt y Gordon (1985), este modelo encuentra sus fundamentos en la Teoría Social Cognitiva de Bandura (1982; 1986), y en su posterior desarrollo en la Teoría de la Autoeficacia (1997, 2001). Integra las contribuciones de la Teoría del Aprendizaje (condicionamiento clásico y operante), la Psicología Cognitivo-Social (expectativas de r...

  2. O lugar dos sentimentos na Ciência do Comportamento e na Psicoterapia Comportamental

    OpenAIRE

    Carvalho, Sueli Galego de

    2009-01-01

    Este artigo mostra uma breve reflexão acerca da valorização dos sentimentos no contexto da terapia comportamental. Discute-se também algumas considerações gerais sobre as idéias de Skinner a respeito das explicações mentalistas do comportamento humano, procurando-se analisar teoricamente como os eventos “encobertos” têm sua parcela na determinação dos comportamentos expressos.Palavras-chave: sentimentos, comportamento encoberto, mentalismo, terapia comportamental cognitiva.

  3. Terapia comportamental cognitiva: uma comparação entre perspectivas

    Directory of Open Access Journals (Sweden)

    Rachel Rodrigues Kerbauy

    Full Text Available A Terapia Comportamental Cognitiva desenvolveu-se a partir de dados e maneiras de trabalhar da Terapia Cognitiva e da Terapia Comportamental. Essas origens e as várias influências parecem determinar maneiras diferentes de conduzir a terapia o que se procurou analisar neste trabalho. Optou-se pela apresentação do trabalho de três autores: Ellis, Beck e Meichembaum como representativos da área embora se reconheça que há diferenças entre algumas concepções e também unanimidade na explicação de comportamentos, especialmente emocionais.

  4. Terapias Cognitiva e Cognitivo-Comportamental em dependência química

    OpenAIRE

    Silva,Cláudio Jerônimo da; Serra,Ana Maria

    2004-01-01

    Este artigo descreve o estado atual da Terapia Cognitiva, Comportamental, Prevenção de Recaída e Treinamento de Habilidades no tratamento de usuários de drogas. O objetivo é apresentar uma revisão sobre teorias e técnicas da Terapia Cognitiva e outras abordagens que dela derivam. Terapias Cognitiva e Comportamental, bem como Prevenção da Recaída e Treinamento de Habilidades, são tratamentos limitados no tempo, orientados em uma meta, e que utilizam sessões estruturadas, assumindo, assim, uma ...

  5. A FORMAÇÃO COMPORTAMENTAL DE AUDITORES CONTÁBEIS INDEPENDENTES: UM ESTUDO MULTICASO [doi: 10.5329/RECADM.20020102004

    Directory of Open Access Journals (Sweden)

    Luiz Alberton

    2002-11-01

    Full Text Available RESUMO O presente artigo tem como objetivo apresentar uma proposta de um modelo de formação comportamental para auditores contábeis independentes. Deste modo, inicialmente, discorre-se sobre os aspectos que devem ser considerados pelo profissional responsável pela gestão das pessoas nas organizações que prestam serviços de auditoria contábil independente, e do perfil destas pessoas requerido pelas empresas. Em seguida são identificadas as teorias que tratam da gestão de pessoas nas organizações, especificamente nos processos de recrutamento e seleção, capacitação e avaliação de desempenho. As empresas buscam profissionais com talentos e, principalmente, que saibam manter o equilíbrio entre a razão e a emoção no ambiente de trabalho. Na literatura que versa sobre a profissão do auditor contábil, é dada muita ênfase aos aspectos técnicos, tratando superficialmente ou renegando os aspectos comportamentais considerados importantes ao desempenho destes profissionais. Para confirmar essas afirmações e dar suporte ao delineamento do modelo, é realizada uma pesquisa de campo com os responsáveis pela gestão de pessoas em quatro empresas internacionais de auditoria contábil independente, que fazem parte das big five, e em uma empresa nacional. Assim, para o delineamento do modelo de formação, a ênfase desta pesquisa recai sobre os aspectos de liderança, comunicação, motivação, negociação, coaching, mentoring, administração de conflitos, trabalho em equipe, técnica de entrevista, análise transacional e de programação neurolingüística, que podem ser utilizados para o desenvolvimento de auditores contábeis independentes, de forma que possam melhorar suas condições de competitividade e empregabilidade. Portanto, são incorporados esses conceitos como ponto de partida para o delineamento de um modelo de formação comportamental de auditores contábeis independentes.

  6. Fuzzy Deterrence

    Science.gov (United States)

    2010-05-01

    the world of logic than friction in mechanics. — Charles Sanders Peirce 1 Rational deterrence theory rests on the foundation that...4 Kosko, Fuzzy Thinking, 4-17. 5 Daniel McNeill and Paul Freiberger, Fuzzy Logic: The Revolutionary Computer Technology That Is Changing Our...1 McNeill and Freiberger, Fuzzy Logic, 174. 2 Yarger, Little Book on Big Strategy, 16. 3 Mukaidono, Fuzzy Logic for

  7. Fuzzy Cores and Fuzzy Balancedness

    NARCIS (Netherlands)

    van Gulick, G.; Norde, H.W.

    2011-01-01

    We study the relation between the fuzzy core and balancedness for fuzzy games. For regular games, this relation has been studied by Bondareva (1963) and Shapley (1967). First, we gain insight in this relation when we analyse situations where the fuzzy game is continuous. Our main result shows that a

  8. Fuzzy Cores and Fuzzy Balancedness

    NARCIS (Netherlands)

    van Gulick, G.; Norde, H.W.

    2011-01-01

    We study the relation between the fuzzy core and balancedness for fuzzy games. For regular games, this relation has been studied by Bondareva (1963) and Shapley (1967). First, we gain insight in this relation when we analyse situations where the fuzzy game is continuous. Our main result shows that

  9. CONTRIBUIÇÕES DA TERAPIA COGNITIVO COMPORTAMENTAL NO TRATAMENTO DA OBESIDADE

    Directory of Open Access Journals (Sweden)

    Ana Raquel Mattoso Chagas Martins

    2016-08-01

    Full Text Available Levando em consideração que o homem é o único animal capaz de modificar seu corpo através do pensamento, a Terapia Cognitivo Comportamental (TCC vem se configurando como um importante aliado no combate à obesidade, proporcionando uma reestruturação cognitiva capaz de modificar não apenas um corpo obeso, mas modificar todo um estilo de vida. A terapia cognitivo-comportamental (TCC tem sido amplamente usada no tratamento da obesidade em associação com outras intervenções, como o acompanhamento nutricional e a prática de atividade física. A TCC é uma terapia de duração breve e com sessões estruturadas nas quais o paciente é solicitado a colaborar ativamente na identificação e na mudança de seus comportamentos e sentimentos que contribuem para a obesidade. O objetivo do presente trabalho é verificar a eficácia do apoio psicoterápico com base na Terapia Cognitivo Comportamental na redução de peso de pacientes obesos. Palavras-chave: Cognitivo; Comportamental; Obesidade.

  10. Terapia comportamental cognitiva para pessoas com transtorno bipolar Cognitive behavioral therapy for bipolar disorders

    Directory of Open Access Journals (Sweden)

    Francisco Lotufo Neto

    2004-10-01

    Full Text Available Descrição dos objetivos e principais técnicas da terapia comportamental cognitiva usadas para a psicoterapia das pessoas com transtorno bipolar.Objectives and main techniques of cognitive behavior therapy for the treatment of bipolar disorder patients are described.

  11. Adaptação e avaliação de uma intervenção cognitivo-comportamental para meninos vítimas de violência sexual

    Directory of Open Access Journals (Sweden)

    Jean Von Hohendorff

    2014-01-01

    Full Text Available Objetivou-se adaptar, aplicar e avaliar um modelo de intervenção cognitivo-comportamental para meninos vítimas de Violência Sexual (VS. Participaram três meninos com idades entre oito e 16 anos, vítimas de VS, que foram avaliados antes e após a intervenção com instrumentos psicológicos acerca de transtornos disruptivos, de humor e de ansiedade. A aplicação do modelo foi avaliada por juízes que analisaram os relatos das sessões terapêuticas por meio de seis indicadores. Os resultados indicaram variabilidade no número de sintomas de cada participante. A avaliação da aplicação revelou a adequação do modelo quanto a dois indicadores (Aliança Terapêutica e Autorrevelação, bem como reajustes necessários no modelo adaptado. Esses resultados se constituem como evidências iniciais sobre a ação psicoterapêutica do modelo adaptado.

  12. Terapia cognitivo-comportamental de transtornos de abuso de álcool e drogas Cognitive-behavioral therapy for alcohol and drug use disorders

    Directory of Open Access Journals (Sweden)

    Bernard P Rangé

    2008-10-01

    Full Text Available OBJETIVO: Entre os diversos tipos de tratamentos aos quais as terapias cognitiva e comportamental têm sido aplicadas com sucesso encontra-se o uso em problemas de adicção. Este artigo, em parte, revê modelos de adicção como os de prevenção de recaídas de Marlatt e Gordon, o de Prochaska, DiClemente e Norcross sobre os estágios de mudança, com a derivação da entrevista motivacional, desenvolvida por Miller e Rollnick, bem como os modelos cognitivos de Beck et al. MÉTODO: Com base em evidências da literatura para o desenvolvimento de programas de tratamento efetivos, é descrito um modelo de tratamento em grupo que foi usado com grupos de alcoolistas encaminhados pela Divisão de Vigilância da Saúde do Trabalhador da Universidade Federal do Rio de Janeiro para o Centro de Pesquisa e Reabilitação do Alcoolismo. RESULTADOS: Os resultados são apresentados indicando que este tipo de tratamento poderia ser uma alternativa a outros tratamentos em uso. CONCLUSÕES: Novas pesquisas são necessárias para validar melhor a abordagem cognitivo-comportamental para os problemas de abuso de álcool e drogas.OBJECTIVE: Cognitive-behavioral therapies have been successfully used to treat addiction. This article is in part a review on addiction models such as relapse prevention by Marlatt & Gordon, stages of change by Prochaska, DiClemente & Norcross, deriving from motivational interview, developed by Miller & Rollnick, as well as the cognitive models by Beck et al. METHOD: Based on literature evidence for the development of effective treatment programs, we report on a group treatment model used in a group of alcoholics referred by the Department of Worker's Health Surveillance at Universidade Federal do Rio de Janeiro to the Alcoholism Rehabilitation and Research Center. RESULTS: Results are presented indicating that this type of treatment could be one alternative to others treatments in use. CONCLUSIONS: New research is needed to better

  13. Fuzzy Ideals and Fuzzy Distributive Lattices%Fuzzy Ideals and Fuzzy Distributive Lattices*

    Institute of Scientific and Technical Information of China (English)

    S.H.Dhanani; Y. S. Pawar

    2011-01-01

    Our main objective is to study properties of a fuzzy ideals (fuzzy dual ideals). A study of special types of fuzzy ideals (fuzzy dual ideals) is also furnished. Some properties of a fuzzy ideals (fuzzy dual ideals) are furnished. Properties of a fuzzy lattice homomorphism are discussed. Fuzzy ideal lattice of a fuzzy lattice is defined and discussed. Some results in fuzzy distributive lattice are proved.

  14. On Fuzzy Simplex and Fuzzy Convex Hull

    Institute of Scientific and Technical Information of China (English)

    Dong QIU; Wei Quan ZHANG

    2011-01-01

    In this paper,we discuss fuzzy simplex and fuzzy convex hull,and give several representation theorems for fuzzy simplex and fuzzy convex hull.In addition,by giving a new characterization theorem of fuzzy convex hull,we improve some known results about fuzzy convex hull.

  15. The Fuzzy Set by Fuzzy Interval

    OpenAIRE

    Dr.Pranita Goswami

    2011-01-01

    Fuzzy set by Fuzzy interval is atriangular fuzzy number lying between the two specified limits. The limits to be not greater than 2 and less than -2 by fuzzy interval have been discussed in this paper. Through fuzzy interval we arrived at exactness which is a fuzzymeasure and fuzzy integral

  16. Fuzzy Riesz subspaces, fuzzy ideals, fuzzy bands and fuzzy band projections

    OpenAIRE

    Hong Liang

    2015-01-01

    Fuzzy ordered linear spaces, Riesz spaces, fuzzy Archimedean spaces and $\\sigma$-complete fuzzy Riesz spaces were defined and studied in several works. Following the efforts along this line, we define fuzzy Riesz subspaces, fuzzy ideals, fuzzy bands and fuzzy band projections and establish their fundamental properties.

  17. On the Fuzzy Convergence

    Directory of Open Access Journals (Sweden)

    Abdul Hameed Q. A. Al-Tai

    2011-01-01

    Full Text Available The aim of this paper is to introduce and study the fuzzy neighborhood, the limit fuzzy number, the convergent fuzzy sequence, the bounded fuzzy sequence, and the Cauchy fuzzy sequence on the base which is adopted by Abdul Hameed (every real number r is replaced by a fuzzy number r¯ (either triangular fuzzy number or singleton fuzzy set (fuzzy point. And then, we will consider that some results respect effect of the upper sequence on the convergent fuzzy sequence, the bounded fuzzy sequence, and the Cauchy fuzzy sequence.

  18. Fuzzy logic

    Science.gov (United States)

    Zadeh, Lofti A.

    1988-01-01

    The author presents a condensed exposition of some basic ideas underlying fuzzy logic and describes some representative applications. The discussion covers basic principles; meaning representation and inference; basic rules of inference; and the linguistic variable and its application to fuzzy control.

  19. Fuzzy promises

    DEFF Research Database (Denmark)

    Anker, Thomas Boysen; Kappel, Klemens; Eadie, Douglas

    2012-01-01

    This article clarifies the commonplace assumption that brands make promises by developing definitions of brand promise delivery. Distinguishing between clear and fuzzy brand promises, we develop definitions of what it is for a brand to deliver on fuzzy functional, symbolic, and experiential...

  20. Terapia cognitivo-comportamental da depressão Cognitive-behavioral therapy for depression

    Directory of Open Access Journals (Sweden)

    Vania Bitencourt Powell

    2008-10-01

    Full Text Available OBJETIVO: Descrever o uso de técnicas cognitivas e revisar os estudos de eficácia da terapia cognitivo-comportamental no tratamento da depressão. MÉTODO: Revisão não-sistemática proveniente dos estudos originais, complementada por informações provenientes de metanálises e livros-texto especializados. RESULTADOS: Foram descritos os fundamentos da terapia cognitivo-comportamental no tratamento da depressão e revisadas as evidências de eficácia em curto e longo prazo. Discutimos igualmente o uso de tratamento farmacológico concomitante à terapia cognitivo-comportamental. CONCLUSÕES: A terapia cognitivo-comportamental é uma das abordagens que apresentam mais evidências empíricas de eficácia no tratamento da depressão, quer oferecida de forma isolada ou em combinação com farmacoterapia.OBJECTIVE: To describe the use of cognitive techniques and to review studies on the efficacy of CBT in the treatment of depression. METHOD: A non-systematic review of the literature of original studies complemented with data from meta-analyses and specialized textbooks. RESULTS: The fundamentals of cognitive-behavioral therapy in the treatment of depression are described and the evidence of short- and long-term efficacy is reviewed. The use of pharmacological therapy in conjunction with CBT is also discussed. CONCLUSIONS: CBT in the treatment of depression is one of the therapeutic modalities with the highest empirical evidence of efficacy, whether applied alone or in combination with pharmacotherapy.

  1. CONFIANÇAS COGNITIVA, AFETIVA E COMPORTAMENTAL EM TROCAS BUSINESS-TO-CONSUMER

    Directory of Open Access Journals (Sweden)

    Mellina da Silva Terres

    2010-09-01

    Full Text Available A confiança tem sido amplamente abordada por diversas disciplinas como a sociologia, a psicologia, a economia e o marketing. Entretanto, após um exame do estado da arte da confiança, ainda vislumbram-se algumas lacunas no conhecimento deste construto. Um destes hiatos é em relação às dimensões cognitiva, afetiva e comportamental da confiança, amplamente ignoradas pelos pesquisadores, que consideram na maioria das vezes, apenas a dimensão cognitiva. Todavia, a dimensão afetiva é uma importante já que se trata de relações interpessoais entre consumidores e organizações, e a dimensão comportamental perece ser importante qualquer que seja a natureza da troca. Este ensaio teórico se propõe a investigar as dimensões afetiva, cognitiva e comportamental da confiança no contexto business-to-consumer bem como explorar suas possíveis relações as intenções de lealdade. Ao longo deste ensaio teórico são lançadas proposições que representam novas trilhas de pesquisa e, ao final do estudo, são feitas algumas considerações.

  2. Assertividade e autocontrole: interpretação analítico-comportamental

    Directory of Open Access Journals (Sweden)

    Vívian Marchezini-Cunha

    Full Text Available Questões relacionadas à assertividade têm recebido atenção por parte de terapeutas comportamentais há mais de três décadas. É mais recente, porém, o esforço de terapeutas analítico-comportamentais para examinar problemas dessa ordem com os mesmos recursos conceituais e metodológicos empregados por seus pares da pesquisa básica e conceitual. O presente trabalho tem como objetivo oferecer uma interpretação analítico-comportamental para padrões de comportamento assertivos, agressivos e passivos. Recuperamos algumas definições de assertividade/agressividade/passividade e examinamos os fenômenos correspondentes enquanto relações comportamentais; discutimos alguns aspectos da abordagem analítico-comportamental para o autocontrole; e sugerimos que as relações comportamentais definidas como assertividade/agressividade/passividade podem ser interpretadas enquanto instâncias de autocontrole ou impulsividade. A abordagem pode abrir novas perspectivas de investigação clínica de habilidades sociais sob um enfoque analítico-comportamental.

  3. Grupoterapia cognitivo-comportamental para crianças e adolescentes vítimas de abuso sexual Terapia de grupo congnitivo-comportamental para niñas y adolescentes víctimas de abuso sexual Cognitive behavioral group therapy for sexually abused girls

    Directory of Open Access Journals (Sweden)

    Luísa Fernanda Habigzang

    2009-08-01

    Full Text Available OBJETIVO: Avaliar os efeitos do modelo de grupoterapia cognitivo-comportamental para crianças e adolescentes do sexo feminino vítimas de abuso sexual. MÉTODOS: Foi utilizado delineamento não-randomizado intragrupos de séries temporais. Crianças e adolescentes do sexo feminino com idade entre nove e 16 anos (N=40 da região metropolitana de Porto Alegre (RS, foram clinicamente avaliadas em três encontros individuais, de 2006 a 2008. A grupoterapia consistiu de 16 sessões semi-estruturadas. Instrumentos psicológicos investigaram sintomas de ansiedade, depressão, transtorno do estresse pós-traumático, stress infantil e crenças e percepções da criança em relação à experiência abusiva antes, durante e após a intervenção. Os resultados foram analisados por meio de testes estatísticos para medidas repetidas. Foi realizada uma análise comparativa dos resultados do pré-teste entre os grupos que receberam atendimento psicológico em grupo imediato após a denúncia do abuso e aquelas que aguardaram por atendimento. RESULTADOS: A análise do impacto da intervenção revelou que a grupoterapia cognitivo-comportamental reduziu significativamente sintomas de depressão, ansiedade, stress infantil e transtorno do estresse pós-traumático. Além disso, a intervenção contribuiu para a reestruturação de crenças de culpa, baixa confiança e credibilidade, sendo efetivo para a redução de sintomas psicológicos e alteração de crenças e percepções distorcidas sobre o abuso. CONCLUSÕES: A grupoterapia cognitivo-comportamental mostrou ser efetiva para a redução de sintomas psicológicos de crianças e adolescentes vítimas de abuso sexual.OBJETIVO: Evaluar los efectos del modelo de terapia de grupo cognitivo-comportamental para niñas y adolescentes del sexo femenino víctimas de abuso sexual. MÉTODOS: Fue utilizado delineamiento no aleatorio intragrupos de series temporales. Niños y adolescentes del sexo femenino con edad

  4. A fuzzy set decision making model applied to electric power systems operation planning; Um modelo de decisao baseado em conjuntos nebulosos aplicado ao planejamento da operacao de sistemas de energia eletrica

    Energy Technology Data Exchange (ETDEWEB)

    Valenca, Mauricio Mendonca

    1993-05-01

    The power system static operation planning has a main objective the determination of performance strategies which satisfy operational criteria. A fuzzy set decision model which takes the load attainment and the compromise between optimality and critical operational constraints into account is presented. The prime characteristic of this methodology is the incorporation of the planner`s preferences structure in a decision process modeled by fuzzy sets. A routine of optimal power flow calculation is used as a computational tool for solving the nonlinear model of the electric power system and for defining the universe of discourse of the decision-making problem. tests were carried on a 30-bus IEEE system in order to find a compromise solution of electric operational goal versus reactive power generation limits. Results and conclusions are presented. (author) 28 refs., 32 figs.

  5. First course in fuzzy logic

    CERN Document Server

    Nguyen, Hung T

    2005-01-01

    THE CONCEPT OF FUZZINESS Examples Mathematical modeling Some operations on fuzzy sets Fuzziness as uncertainty Exercises SOME ALGEBRA OF FUZZY SETS Boolean algebras and lattices Equivalence relations and partitions Composing mappings Isomorphisms and homomorphisms Alpha-cuts Images of alpha-level sets Exercises FUZZY QUANTITIES Fuzzy quantities Fuzzy numbers Fuzzy intervals Exercises LOGICAL ASPECTS OF FUZZY SETS Classical two-valued logic A three-valued logic Fuzzy logic Fuzzy and Lukasiewi

  6. ESTUDO DO RISCO DE DEGRADAÇÃO AMBIENTAL EM RIOS MEDIANTE A APLICAÇÃO DE UM MODELO MATEMÁTICO fuzzy DE DBO/OD, CONSIDERANDO DIFERENTES FONTES DE LANÇAMENTO DE EFLUENTES

    Directory of Open Access Journals (Sweden)

    Ada Amelia Lopes

    2016-06-01

    Full Text Available Com base no fenômeno de transferência de massa, a lógica fuzzy desenvolvida no presente estudo estabeleceu relações entre a Demanda Bioquímica de Oxigênio (DBO e o Oxigênio Dissolvido (OD, para diferentes lançamentos. A aplicação da lógica fuzzy neste cenário, permitiu que as incertezas das variáveis envolvidas no processo, especificamente na solução da equação de advecção, fossem avaliadas e o risco de contaminação de um sistema hídrico diante dos lançamentos de poluentes pudesse ser investigado. No desenvolvimento da lógica fuzzy,  os parâmetros de DBO/OD foram convertidos em um conjunto de equações diferenciais e representados como funçõe de pertinência. Para execução das simulações da qualidade da água, os autores utilizaram um programa computacional codificado em linguagem FORTRAN. De acordo com os resultados, concluiu-se que a combinação da Teoria do Transporte de Massa e a da Lógica fuzzy pode ser uma importante ferramenta para a avaliação da Análise de Risco em sistemas hídricos, contribuindo sobremaneira para o monitoramento de temáticas prioritárias da Engenharia Ambiental.

  7. Fuzzy Set Approximations in Fuzzy Formal Contexts

    Institute of Scientific and Technical Information of China (English)

    Mingwen Shao; Shiqing Fan

    2006-01-01

    In this paper, a kind of multi-level formal concept is introduced. Based on the proposed multi-level formal concept, we present a pair of rough fuzzy set approximations within fuzzy formal contexts. By the proposed rough fuzzy set approximations, we can approximate a fuzzy set according to different precision level. We discuss the properties of the proposed approximation operators in detail.

  8. Instrumento de apoio para a primeira entrevista em psicoterapia cognitivo-comportamental

    OpenAIRE

    Sheila Giardini Murta; Sheila Giovana Morais Rocha

    2014-01-01

    A primeira entrevista em psicoterapia é, usualmente, vivenciada com grande ansiedade por estagiários de Psicologia. Visando facilitar essa transição profissional e colaborar para a formação de terapeutas iniciantes, este artigo tem por objetivo apresentar um instrumento para uso por estagiários de Psicoterapia Cognitivo-Comportamental na primeira sessão individual. O instrumento é apresentado na forma de uma lista de checagem, contendo aspectos a serem abordados no decorrer da sessão, além de...

  9. Terapia cognitivo-comportamental em grupo e sertralina no tratamento do transtorno obsessivo-compulsivo

    OpenAIRE

    Marcelo Basso de Sousa

    2005-01-01

    Fundamentação: A terapia cognitivo-comportamental em grupo (TCCG) e os inibidores da recaptação da serotonina (IRS) apresentam eficácia comprovada em reduzir os sintomas do transtorno obsessivo-compulsivo (TOC). Ainda é uma questão em aberto qual destas modalidades de tratamento é a mais efetiva. Este estudo foi conduzido para avaliar a eficácia da TCCG em relação à da sertralina na redução dos sintomas do TOC. Metodologia: Cinqüenta e seis pacientes com diagnóstico de TOC, de acordo com os c...

  10. Análise comportamental do discurso: fundamentos e método

    OpenAIRE

    Elizeu Borloti; Alexandra Iglesias; Camila Mattedi Dalvi; Renata Danielle Moreira Silva

    2008-01-01

    Este estudo descreve uma Análise Comportamental do Discurso (ACD), apresenta seus fundamentos e um método para efetivá-la, inferido de O Comportamento Verbal, de Skinner. Propõe a tese de que a ACD possa ser uma vertente de Análise do Discurso (AD), devido aos seus fundamentos epistemológicos: anti-mentalismo, anti-realismo e contextualismo. Discurso é um conjunto de comportamentos verbais sob controle das contingências de reforço (históricas e atuais) cujo sentido advém desse controle. Ao co...

  11. Terapia cognitivo-comportamental da fobia social Cognitive-behavioral therapy in social phobia

    Directory of Open Access Journals (Sweden)

    Lígia M Ito

    2008-10-01

    Full Text Available OBJETIVO: Este artigo revisa aspectos relevantes da fobia social e os estágios de tratamento através da terapia cognitivo-comportamental em crianças, adolescentes e adultos. MÉTODO: A partir do banco de dados Medline, realizou-se revisão da literatura publicada a respeito do tratamento da fobia social por meio da terapia cognitivo-comportamental. RESULTADOS: Revisão da literatura sugere que a fobia social é uma condição prevalente e crônica, caracterizada por inibição social e timidez excessiva. Tanto o diagnóstico como o tratamento desse transtorno são comumente determinados pelo nível de incômodo e pelo prejuízo funcional. Estudos populacionais indicam taxas de prevalência ao longo da vida para a fobia social entre 2,5 e 13,3%. As principais técnicas utilizadas na terapia cognitivo-comportamental para a fobia social são descritas e exemplificadas em um relato de caso. CONCLUSÕES: Há consenso geral na literatura de que a terapia cognitivo-comportamental é eficaz tanto para o tratamento de jovens como de adultos com fobia social. Uma vez que a fobia social com freqüência tem início precoce, a identificação de crianças com risco acentuado para o desenvolvimento de fobia social deve ser priorizada em investigações futuras.OBJECTIVE: This article reviews relevant aspects of social phobia and the stages of treatment within cognitive-behavioral therapy in children and adolescents, as well as in adults. METHOD: A review of the literature published on the treatment of social phobia using cognitive-behavioral treatments was performed using the Medline database. RESULTS: A review of the literature suggests that social phobia is a chronic and prevalent condition, characterized by social inhibition and excessive shyness. Diagnosis and treatment of the disorder are usually determined by distress level and functional impairment. Population studies indicate that lifetime prevalence rates for social phobia range from 2.5 to 13

  12. Fuzzy Clustering

    DEFF Research Database (Denmark)

    Berks, G.; Keyserlingk, Diedrich Graf von; Jantzen, Jan

    2000-01-01

    A symptom is a condition indicating the presence of a disease, especially, when regarded as an aid in diagnosis.Symptoms are the smallest units indicating the existence of a disease. A syndrome on the other hand is an aggregate, set or cluster of concurrent symptoms which together indicate...... and clustering are the basic concerns in medicine. Classification depends on definitions of the classes and their required degree of participant of the elements in the cases' symptoms. In medicine imprecise conditions are the rule and therefore fuzzy methods are much more suitable than crisp ones. Fuzzy c......-mean clustering is an easy and well improved tool, which has been applied in many medical fields. We used c-mean fuzzy clustering after feature extraction from an aphasia database. Factor analysis was applied on a correlation matrix of 26 symptoms of language disorders and led to five factors. The factors...

  13. Fuzzy jets

    Energy Technology Data Exchange (ETDEWEB)

    Mackey, Lester [Department of Statistics, Stanford University,Stanford, CA 94305 (United States); Nachman, Benjamin [Department of Physics, Stanford University,Stanford, CA 94305 (United States); SLAC National Accelerator Laboratory, Stanford University,2575 Sand Hill Rd, Menlo Park, CA 94025 (United States); Schwartzman, Ariel [SLAC National Accelerator Laboratory, Stanford University,2575 Sand Hill Rd, Menlo Park, CA 94025 (United States); Stansbury, Conrad [Department of Physics, Stanford University,Stanford, CA 94305 (United States)

    2016-06-01

    Collimated streams of particles produced in high energy physics experiments are organized using clustering algorithms to form jets. To construct jets, the experimental collaborations based at the Large Hadron Collider (LHC) primarily use agglomerative hierarchical clustering schemes known as sequential recombination. We propose a new class of algorithms for clustering jets that use infrared and collinear safe mixture models. These new algorithms, known as fuzzy jets, are clustered using maximum likelihood techniques and can dynamically determine various properties of jets like their size. We show that the fuzzy jet size adds additional information to conventional jet tagging variables in boosted topologies. Furthermore, we study the impact of pileup and show that with some slight modifications to the algorithm, fuzzy jets can be stable up to high pileup interaction multiplicities.

  14. The Partial Fuzzy Set

    OpenAIRE

    Dr.Pranita Goswami

    2011-01-01

    The Partial Fuzzy Set is a portion of the Fuzzy Set which is again a Fuzzy Set. In the Partial Fuzzy Set the baseline is shifted from 0 to 1 to any of its α cuts . In this paper we have fuzzified a portion of the Fuzzy Set by transformation

  15. Terapia cognitivo-comportamental dos transtornos alimentares Cognitive-behavioural therapy of eating disorders

    Directory of Open Access Journals (Sweden)

    Mônica Duchesne

    2002-12-01

    Full Text Available A terapia cognitivo-comportamental é uma intervenção breve, semi-estruturada e orientada para metas, que tem sido amplamente utilizada nos centros de pesquisa e tratamento de transtornos alimentares. O presente artigo tem por objetivo descrever as principais estratégias cognitivas e comportamentais utilizadas no tratamento ambulatorial dos transtornos alimentares. Vários ensaios clínicos avaliaram a eficácia da terapia cognitivo-comportamental, indicando que ela favorece a remissão ou diminuição da freqüência de episódios de compulsão alimentar, dos comportamentos purgativos e da restrição alimentar. Tem sido relatada também melhora do humor, do funcionamento social, e diminuição da preocupação com peso e formato corporal.The cognitive-behavioural therapy is a brief, semi-structured and goal oriented intervention, which has been largely used in research and treatment centers specialized on eating disorders. The present article describes the main cognitive and behavioral strategies used in the outpatient treatment of eating disorders. Several clinical studies assessed the effectiveness of cognitive-behavioural therapy, indicating the remission or the reduction of the frequency of binge eating episodes, purgative behaviours and food restriction. Social and mood improvement, as well as reduction of weight and body shape concerns, have also been reported.

  16. Properties of fuzzy hyperplanes

    Institute of Scientific and Technical Information of China (English)

    ZHANG Zhong; LI Chuandong; WU Deyin

    2004-01-01

    Some properties of closed fuzzy matroid and those of its hyperplanes are investigated. A fuzzy hyperplane property,which extends the analog of a crisp matroid from crisp set systems to fuzzy set systems, is proved.

  17. Estágio de prontidão de pacientes com disfonia comportamental pré e pós-terapia de voz de grupo

    OpenAIRE

    Costa,Bianca Oliveira Ismael da; Silva,Priscila Oliveira Costa; Pinheiro,Renata Serrano de Andrade; Silva,Hêmmylly Farias da; Almeida,Anna Alice Figueirêdo de

    2017-01-01

    RESUMO Objetivo Verificar a efetividade da terapia de grupo no estágio de prontidão de pacientes com disfonia comportamental, bem como identificar que itens da Escala URICA-Voz são mais sensíveis a mudanças pós-terapia de grupo em pacientes com disfonia comportamental. Método Trata-se de um estudo de intervenção realizado com 49 pacientes com disfonia comportamental. A terapia de grupo ocorreu em oito sessões, sendo a primeira e a última de avaliação e as outras seis terapêuticas, com abord...

  18. Intuitionistic Fuzzy Cycles and Intuitionistic Fuzzy Trees

    Science.gov (United States)

    Alshehri, N. O.

    2014-01-01

    Connectivity has an important role in neural networks, computer network, and clustering. In the design of a network, it is important to analyze connections by the levels. The structural properties of intuitionistic fuzzy graphs provide a tool that allows for the solution of operations research problems. In this paper, we introduce various types of intuitionistic fuzzy bridges, intuitionistic fuzzy cut vertices, intuitionistic fuzzy cycles, and intuitionistic fuzzy trees in intuitionistic fuzzy graphs and investigate some of their interesting properties. Most of these various types are defined in terms of levels. We also describe comparison of these types. PMID:24701155

  19. Terapia analítico-comportamental da depressão: uma antiga ou uma nova ciência aplicada? Behavior-analytical therapy of depression: an old or a new applied science?

    Directory of Open Access Journals (Sweden)

    Paulo Roberto Abreu

    2006-01-01

    Full Text Available CONTEXTO: A história dos estudos comportamentais no campo da depressão é apresentada. OBJETIVO: Apresentar e analisar os avanços das terapias analítico-comportamentais. MÉTODO: Analisaram-se 37 referências relacionadas a estudos conceituais, de pesquisa de base e aplicada, todos publicados no período de 1961 a 2006. Os preceitos teóricos e metodológicos adotados foram considerados, e o impacto das aplicações propostas, foi discutido. RESULTADOS: Tradicionalmente, os modelos analítico-comportamentais de Ferster e Lewinsohn priorizam a baixa freqüência de comportamentos contingentes ao reforçamento positivo como variável crítica na determinação do repertório depressivo. Ainda que essa variável estivesse de fato assim relacionada, pouca atenção foi dada às intervenções voltadas aos enfrentamentos dos eventos aversivos supressores das respostas reforçadas positivamente. Dentro desse impasse pragmático-conceitual, o modelo cognitivo-comportamental de Beck surgiu e logo foi aclamado como o tratamento psicossocial de excelência na depressão. Contudo, pesquisas recentes sinalizaram as lacunas da conceituação cognitiva, permitindo novamente que a atenção fosse redirecionada aos modelos analítico-comportamentais iniciais. Jacobson, então, revisitou o modelo de Ferster, criando uma nova proposta de terapia chamada de ativação comportamental (BA. CONCLUSÃO: O fenômeno da depressão maior foi palco do nascimento da terapia cognitivo-comportamental de Beck e coincidentemente pode estar sendo a força motriz que veio resgatar a importância da ênfase contextual das análises comportamentais clínicas.BACKGROUND: The present review addresses the history of behavioral studies in depression. OBJECTIVE: To present and analyze the advances in behavior-analytical therapies. METHODS: 37 references reporting conceptual, basic and applied studies, all of them published between 1961 and 2006, were examined. The theoretical and

  20. Applied to neuro-fuzzy models for signal validation in Angra 1 nuclear power plant; Modelos de validacao de sinal utilizando tecnicas de inteligencia artificial aplicados a um reator nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Mauro Vitor de

    1999-06-15

    This work develops two models of signal validation in which the analytical redundancy of the monitored signals from an industrial plant is made by neural networks. In one model the analytical redundancy is made by only one neural network while in the other it is done by several neural networks, each one working in a specific part of the entire operation region of the plant. Four cluster techniques were tested to separate the entire region of operation in several specific regions. An additional information of systems' reliability is supplied by a fuzzy inference system. The models were implemented in C language and tested with signals acquired from Angra I nuclear power plant, from its start to 100% of power. (author)

  1. Terapia cognitivo-comportamental no transtorno de pânico

    OpenAIRE

    Manfro, Gisele Gus; Heldt,Elizeth; Cordioli, Aristides Volpato; Otto,Michael W.

    2008-01-01

    OBJETIVO: O transtorno de pânico é uma condição crônica e recorrente que prejudica a qualidade de vida e o funcionamento psicossocial dos portadores. Embora os medicamentos sejam efetivos na redução dos ataques de pânico, muitos pacientes não respondem adequadamente a essas intervenções. A terapia cognitivo-comportamental fornece um método alternativo eficaz para tratar transtorno de pânico e evitação agorafóbica. O objetivo do estudo é o de descrever o uso de técnicas cognitivo-comportamenta...

  2. Instrumento de apoio para a primeira entrevista em psicoterapia cognitivo-comportamental

    Directory of Open Access Journals (Sweden)

    Sheila Giardini Murta

    2014-12-01

    Full Text Available A primeira entrevista em psicoterapia é, usualmente, vivenciada com grande ansiedade por estagiários de Psicologia. Visando facilitar essa transição profissional e colaborar para a formação de terapeutas iniciantes, este artigo tem por objetivo apresentar um instrumento para uso por estagiários de Psicoterapia Cognitivo-Comportamental na primeira sessão individual. O instrumento é apresentado na forma de uma lista de checagem, contendo aspectos a serem abordados no decorrer da sessão, além de questões abertas sobre a vivência emocional e autoavaliação do desempenho na sessão. São discutidos achados de pesquisa em psicoterapia que fundamentam o instrumento. Adicionalmente, são sugeridos estudos para avaliação de seu potencial didático na formação de psicoterapeutas.

  3. Some Additions to the Fuzzy Convergent and Fuzzy Bounded Sequence Spaces of Fuzzy Numbers

    OpenAIRE

    Şengönül, M.; Z. Zararsız

    2011-01-01

    Some properties of the fuzzy convergence and fuzzy boundedness of a sequence of fuzzy numbers were studied in Choi (1996). In this paper, we have consider, some important problems on these spaces and shown that these spaces are fuzzy complete module spaces. Also, the fuzzy α-, fuzzy β-, and fuzzy γ-duals of the fuzzy module spaces of fuzzy numbers have been computeded, and some matrix transformations are given.

  4. Efeitos do manejo comportamental de incontinência fecal em adolescente

    Directory of Open Access Journals (Sweden)

    Anderson Jonas das Neves

    Full Text Available A incontinência fecal, também conhecida como encoprese, é um transtorno de evacuação que acarreta prejuízos ao desenvolvimento psicossocial e orgânico da criança e do adolescente, e que demanda atenção e cuidado de pais e profissionais de saúde. No amplo contexto de tratamento da encoprese, a psicoterapia constitui importante recurso, sendo a terapia comportamental apontada como uma das modalidades mais promissoras e eficazes para o tratamento dessa dificuldade de eliminação. Este artigo apresenta o estudo dos efeitos do manejo comportamental de quadro de incontinência fecal em um adolescente de 14 anos, atendido em clínica-escola de Psicologia do interior do Estado de São Paulo durante 14 meses. A partir do referencial teórico da análise do comportamento, foi desenvolvido, em contexto psicoterápico, um conjunto de estratégias comportamentais com o cliente, bem como orientações aos pais, visando à gradativa extinção encoprética. No decorrer desse processo, o cliente apresentou significativas aquisições comportamentais de uso regular do banheiro e adequado controle esfincteriano, monitoradas semanalmente, que possibilitaram a plena extinção das ocorrências de sujidade, sendo avaliado o efeito em follow-up realizado três meses após o encerramento dessa intervenção.

  5. Terapia cognitivo-comportamental para luto pela morte súbita de cônjuge

    Directory of Open Access Journals (Sweden)

    Adriana Cardoso de Oliveira e Silva

    2011-01-01

    Full Text Available INTRODUÇÃO: O processo de luto devido à morte súbita de cônjuge apresenta particularidades que devem ser consideradas no atendimento clínico daqueles que passam por essa experiência. MÉTODOS: Estudo de caso de terapia para luto utilizando protocolo de atendimento cognitivista comportamental. O progresso da paciente foi avaliado no início e término do tratamento com Inventário Beck de Depressão (BDI, Inventário Beck de Ansiedade (BAI e Escala Beck de Desesperança (BHS, Inventário de Sintomas de Stress de Lipp (ISSL e Questionário de Saúde Geral (QSG. RESULTADOS: Houve redução da depressão, ansiedade e desesperança. Em relação ao estresse, a paciente passou da fase de exaustão para a de resistência. Houve redução do estresse psíquico (de 95% para 50%, da desconfiança em relação ao próprio desempenho (de 90% para 40%, de distúrbios do sono (de 95% para 45%, de desejo de morte (de 95% para 20% e também de distúrbios psicossomáticos (de 95% para 60%. CONCLUSÃO: O atendimento terapêutico para esse tipo específico de luto mediante o enfoque da terapia cognitivo-comportamental se mostrou eficaz.

  6. Introduction to fuzzy systems

    CERN Document Server

    Chen, Guanrong

    2005-01-01

    Introduction to Fuzzy Systems provides students with a self-contained introduction that requires no preliminary knowledge of fuzzy mathematics and fuzzy control systems theory. Simplified and readily accessible, it encourages both classroom and self-directed learners to build a solid foundation in fuzzy systems. After introducing the subject, the authors move directly into presenting real-world applications of fuzzy logic, revealing its practical flavor. This practicality is then followed by basic fuzzy systems theory. The book also offers a tutorial on fuzzy control theory, based mainly on th

  7. Fuzziness in Chang's fuzzy topological spaces

    OpenAIRE

    1999-01-01

    It is known that fuzziness within the concept of openness of a fuzzy set in a Chang's fuzzy topological space (fts) is absent. In this paper we introduce a gradation of openness for the open sets of a Chang jts (X, $\\mathcal{T}$) by means of a map $\\sigma\\;:\\; I^{x}\\longrightarrow I\\left(I=\\left[0,1\\right]\\right)$, which is at the same time a fuzzy topology on X in Shostak 's sense. Then, we will be able to avoid the fuzzy point concept, and to introduce an adeguate theory f...

  8. Representation Theorems for Fuzzy Random Sets and Fuzzy Stochastic Processes

    Institute of Scientific and Technical Information of China (English)

    1999-01-01

    The fuzzy static and dynamic random phenomena in an abstract separable Banach space is discussed in this paper. The representation theorems for fuzzy set-valued random sets, fuzzy random elements and fuzzy set-valued stochastic processes are obtained.

  9. Fuzzy associative memories

    Science.gov (United States)

    Kosko, Bart

    1991-01-01

    Mappings between fuzzy cubes are discussed. This level of abstraction provides a surprising and fruitful alternative to the propositional and predicate-calculas reasoning techniques used in expert systems. It allows one to reason with sets instead of propositions. Discussed here are fuzzy and neural function estimators, neural vs. fuzzy representation of structured knowledge, fuzzy vector-matrix multiplication, and fuzzy associative memory (FAM) system architecture.

  10. Fuzzy Soft Topological Groups

    Directory of Open Access Journals (Sweden)

    S. Nazmul

    2014-03-01

    Full Text Available Notions of Lowen type fuzzy soft topological space are introduced and some of their properties are established in the present paper. Besides this, a combined structure of a fuzzy soft topological space and a fuzzy soft group, which is termed here as fuzzy soft topological group is introduced. Homomorphic images and preimages are also examined. Finally, some definitions and results on fuzzy soft set are studied.

  11. Conhecimento da equipe de enfermagem sobre avaliação comportamental de dor em paciente crítico

    Directory of Open Access Journals (Sweden)

    Regina Cláudia Silva Souza

    Full Text Available Estudo transversal prospectivo que teve como objetivo descrever o conhecimento da equipe de enfermagem sobre uma avaliação comportamental de dor. Realizado em hospital privado da cidade de São Paulo, Brasil, em novembro de 2011, com profissionais de enfermagem de uma UTI geral adulto. Estes responderam a um questionário com dados sociodemográficos e questões referentes ao conhecimento sobre uma avaliação comportamental de dor. A análise dos dados foi descritiva e a média de acertos por categoria profissional foi comparada por teste Mann-Whitney. Dos 113 participantes, mais de 70% demonstraram ter conhecimento sobre os principais aspectos dessa avaliação e não houve diferença estatisticamente significativa entre as categorias profissionais. Concluiu-se que o conhecimento dos profissionais foi satisfatório, mas pode ser aprimorado.

  12. Tratamento cognitivo e comportamental para transtornos do controle de impulsos Cognitive-behavioral treatment for impulse control disorders

    Directory of Open Access Journals (Sweden)

    David C Hodgins

    2008-05-01

    Full Text Available OBJETIVOS: Este artigo revisa o tratamento da cleptomania, do comprar compulsivo e do jogo patológico. MÉTODO: Realizou-se uma revisão da literatura publicada. RESULTADOS: A pesquisa sobre o tratamento em todas essas áreas é limitada. As técnicas cognitivo-comportamentais utilizadas no tratamento da cleptomania compreendem sensibilização encoberta, dessensibilização imaginal, dessensibilização sistemática, terapia de aversão, treinamento de relaxamento e fontes alternativas de satisfação. Com relação ao comprar compulsivo, não existe amparo empírico para o tratamento, mas as técnicas comuns examinadas foram sensibilização encoberta, exposição e prevenção de resposta, controle do estímulo, reestruturação cognitiva e prevenção de recaída. O tratamento do jogo patológico teve êxito tanto no formato em grupo como no individual, utilizando técnicas tais como terapia aversiva, dessensibilização sistemática, dessensibilização imaginal e terapia comportamental multimodal (incluindo exposição in vivo, controle do estímulo e sensibilização encoberta, juntamente com técnicas cognitivas, tais como psicoeducação, reestruturação cognitiva e prevenção de recaída. CONCLUSÕES: Há um consenso geral na literatura de que as terapias cognitivo-comportamentais oferecem um modelo eficaz de intervenção em todos esses transtornos. Uma formulação de caso individualizada é apresentada com um exemplo de estudo de caso. Sugerem-se diretrizes para a prática clínica de cada transtorno.OBJECTIVES: This paper reviews the cognitive-behavioral treatment of kleptomania, compulsive buying, and pathological gambling. METHOD: A review of the published literature was conducted. RESULTS: Treatment research in all of these areas is limited. The cognitive-behavioral techniques used in the treatment of kleptomania encompass covert sensitization, imaginal desensitization, systematic desensitization, aversion therapy, relaxation

  13. Intuitionistic supra fuzzy topological spaces

    Energy Technology Data Exchange (ETDEWEB)

    Abbas, S.E. E-mail: sabbas73@yahoo.com

    2004-09-01

    In this paper, We introduce an intuitionistic supra fuzzy closure space and investigate the relationship between intuitionistic supra fuzzy topological spaces and intuitionistic supra fuzzy closure spaces. Moreover, we can obtain intuitionistic supra fuzzy topological space induced by an intuitionistic fuzzy bitopological space. We study the relationship between intuitionistic supra fuzzy closure space and the intuitionistic supra fuzzy topological space induced by an intuitionistic fuzzy bitopological space.

  14. Fuzzy logic in management

    CERN Document Server

    Carlsson, Christer; Fullér, Robert

    2004-01-01

    Fuzzy Logic in Management demonstrates that difficult problems and changes in the management environment can be more easily handled by bringing fuzzy logic into the practice of management. This explicit theme is developed through the book as follows: Chapter 1, "Management and Intelligent Support Technologies", is a short survey of management leadership and what can be gained from support technologies. Chapter 2, "Fuzzy Sets and Fuzzy Logic", provides a short introduction to fuzzy sets, fuzzy relations, the extension principle, fuzzy implications and linguistic variables. Chapter 3, "Group Decision Support Systems", deals with group decision making, and discusses methods for supporting the consensus reaching processes. Chapter 4, "Fuzzy Real Options for Strategic Planning", summarizes research where the fuzzy real options theory was implemented as a series of models. These models were thoroughly tested on a number of real life investments, and validated in 2001. Chapter 5, "Soft Computing Methods for Reducing...

  15. Hesitant fuzzy sets theory

    CERN Document Server

    Xu, Zeshui

    2014-01-01

    This book provides the readers with a thorough and systematic introduction to hesitant fuzzy theory. It presents the most recent research results and advanced methods in the field. These includes: hesitant fuzzy aggregation techniques, hesitant fuzzy preference relations, hesitant fuzzy measures, hesitant fuzzy clustering algorithms and hesitant fuzzy multi-attribute decision making methods. Since its introduction by Torra and Narukawa in 2009, hesitant fuzzy sets have become more and more popular and have been used for a wide range of applications, from decision-making problems to cluster analysis, from medical diagnosis to personnel appraisal and information retrieval. This book offers a comprehensive report on the state-of-the-art in hesitant fuzzy sets theory and applications, aiming at becoming a reference guide for both researchers and practitioners in the area of fuzzy mathematics and other applied research fields (e.g. operations research, information science, management science and engineering) chara...

  16. Comparação entre os enfoques cognitivo, comportamental e cognitivo-comportamental no tratamento do transtorno de pânico Comparison between cognitive, behavioral and cognitive-behavioral approaches in the treatment of panic disorder

    Directory of Open Access Journals (Sweden)

    Marcele Regine de Carvalho

    2008-01-01

    Full Text Available CONTEXTO: A terapia cognitivo-comportamental é a modalidade psicoterapêutica mais estudada no transtorno de pânico (TP e demonstrou, nos mais diferentes estudos experimentais, ser bastante eficaz, inclusive quando comparada a grupos-controle, tratamentos psicofarmacológicos e outras formas de psicoterapias não estruturadas. A literatura sobre o tratamento cognitivo-comportamental do TP contempla comparações entre as técnicas mais utilizadas nesse tipo de psicoterapia. OBJETIVOS: Revisar a literatura que compara a eficácia dos enfoques cognitivo, comportamental e cognitivo-comportamental do TP e que destaca as limitações referentes a esses tratamentos psicológicos e às metodologias de pesquisa aplicadas. MÉTODOS: Revisão sistemática da literatura, principalmente por meio da base de dados PubMed. RESULTADOS: Verificou-se que, na maioria dos estudos, a eficácia das intervenções cognitiva, comportamental e de sua combinação equiparou-se e hipóteses a esse respeito foram levantadas. CONCLUSÕES: Deve-se atentar para o aprimoramento de importantes aspectos metodológicos, visando a resultados cada vez mais fidedignos que possam apontar direcionamentos que contribuam para o refinamento das técnicas utilizadas.BACKGROUND: Cognitive-behavioral therapy is the most studied psychotherapeutic modality in panic disorder (PD and has demonstrated, in the most different experimental studies, to be sufficiently efficient when compared with control groups, psychopharmacological treatments and other forms of unstructured psychotherapies. Literature on the cognitivebehavioral treatment of PD contemplates comparisons between the most used techniques. OBJECTIVES: Revise the literature that compares the effectiveness of the cognitive, behavioral and cognitive-behavioral approaches of PD, detaching the referring limitations to these psychological treatments and the applied research methodologies. METHODS: Literature systematic review, mainly

  17. O uso de ácido valproico para a indução de modelos animais de autismo: uma revisão

    OpenAIRE

    Eloise Schlickmann; Jucélia Jeremias Fortunato

    2013-01-01

    INTRODUÇÃO: O autismo é um distúrbio neuropsiquiátrico com base biológica significativa. Faz parte de um grupo de condições definidas como transtornos invasivos do desenvolvimento e é caracterizado de um ponto de vista comportamental, com etiologias múltiplas e graus variados de gravidade. Entre os modelos animais de autismo estudados mais extensivamente estão aqueles derivados da exposição a agentes teratogênicos. OBJETIVO: O objetivo deste estudo foi mostrar evidências sobre a associação en...

  18. O uso da terapia cognitivo-comportamental no tratamento do transtorno depressivo: uma abordagem em grupo

    Directory of Open Access Journals (Sweden)

    Terezinha Rech

    2010-01-01

    Full Text Available A depressão tem atingido amplos grupos sociais sem distinção entre eles e, constantemente, está associada como comorbidade a outras doenças. A Terapia Cognitivo- Comportamental (TCC começou a ser estruturada pelo psicanalista e psiquiatra Aaron Beck para oferecer tratamento a pessoas deprimidas. Foi aprimorada e chegou a propostas de tratamento em grupo desenvolvidas por Aaron Beck e demais colaboradores. Este estudo procura fazer uma breve revisão dos temas da TCC e de sua aplicação no tratamento em grupo para depressão, desde a sua formulação até a revisão do uso dessa terapia na atualidade. Foram analisados artigos do ano de 2008 dessa metodologia de trabalho e comparados com os cânones dessa tipologia de tratamento. A depressão tem atingido amplos grupos sociais sem distinção entre eles e, constantemente, está associada como comorbidade a outras doenças. A Terapia Cognitivo- Comportamental (TCC começou a ser estruturada pelo psicanalista e psiquiatra Aaron Beck para oferecer tratamento a pessoas deprimidas. Foi aprimorada e chegou a propostas de tratamento em grupo desenvolvidas por Aaron Beck e demais colaboradores. Este estudo procura fazer uma breve revisão dos temas da TCC e de sua aplicação no tratamento em grupo para depressão, desde a sua formulação até a revisão do uso dessa terapia na atualidade. Foram analisados artigos do ano de 2008 dessa metodologia de trabalho e comparados com os cânones dessa tipologia de tratamento. Abstract Depression affects a variety of social groups without distinction, and usually occurs as comorbidity with other disorders. The Cognitive Behavioral Therapy (CBT was originally structured by Aaron Beck to provide treatment to depressed people. It was later improved by him and his collaborators and developed into a proposal of group therapy. This study comprises a brief review of CBT topics and their application in group therapy of depression, from its formulation to its

  19. FINANÇAS COMPORTAMENTAIS: ANÁLISE DO PERFIL COMPORTAMENTAL DO INVESTIDOR E DO PROPENSO INVESTIDOR [doi: 10.5329/RECADM.20080702001

    Directory of Open Access Journals (Sweden)

    Wesley Vieira Silva

    2008-11-01

    Full Text Available Normal 0 21 false false false PT-BR X-NONE X-NONE MicrosoftInternetExplorer4 RESUMO Finanças comportamentais, também conhecidas por Economia Comportamental, representam um novo campo na teoria financeira que busca incorporar os aspectos psicológicos dos indivíduos no processo de avaliação e precificação de ativos financeiros. Este novo campo do estudo de Finanças tem como objetivos a revisão e o aperfeiçoamento do modelo econômico-financeiro atual, pela incorporação de evidências sobre a irracionalidade do investidor. A fim de obter maiores informações sobre o perfil comportamental de investidores e propensos investidores, realizou-se uma pesquisa descritiva de natureza quantitativa baseada na aplicação de um questionário estruturado composto de 20 perguntas direcionadas a 164 discentes e 33 docentes do curso de Administração da Pontifícia Universidade Católica do Paraná. Os resultados auferidos por meio de técnicas estatísticas multivariada como a análise de cluster e análise de discriminante, tornaram-se possível identificar cinco grupos com características distintas de importância relevante para o estudo realizado. Verifica-se ainda que grande parcela dos respondentes afirmou não possuir conhecimentos acerca deste mercado, bem como muitos ainda se classificando como aprendizes.   Palavras-Chave Finanças comportamentais, Aversão à perda, Precificação, Análise de Cluster, Análise de discriminante.     ABSTRACT Behavioral finance is also known for behavioral economy and it represents a new line in the financial theory that is searches to incorporate the psychological aspects individuals in the evaluation process and pricing of financial assets. This new study line of finances has as objective the revision and the improvement of the current economic financial model for the incorporation of evidences on the irrationality of the investor. In order to get greater information on the behavioral profile of

  20. Abordagem psicológica da AIDS através do enfoque cognitivo-comportamental

    Directory of Open Access Journals (Sweden)

    Remor Eduardo Augusto

    1999-01-01

    Full Text Available Este artigo apresenta um conjunto de conhecimentos que são fruto do trabalho clínico e de reflexões, juntamente com a revisão teórica dos principais aspectos relacionados com a Infecção pelo HIV, abordagem terapêutica e um panorama geral das possíveis alterações emocionais que podem apresentar as pessoas infectadas pelo HIV ou que já tenham desenvolvido AIDS. Pretende centrar-se nos aspectos relacionados à intervenção psicológica a partir do enfoque terapêutico cognitivo-comportamental. Demonstra-se que a problemática apresentada por pessoas infectadas pelo vírus da AIDS requer uma atenção específica. Propõe-se uma abordagem bio-psico-social de seus problemas, pois, além das necessidades de atenção da própria doença, juntam-se outros aspectos relacionados com a mesma, como o rechaço social que a doença gera, a atenção às famílias, os problemas sociais, jurídicos e laborais, assim como a necessidade de informação, assessoramento e apoio psicológico ao afetado e as suas famílias.

  1. Transformation and entropy for fuzzy rough sets

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    A new method for translating a fuzzy rough set to a fuzzy set is introduced and the fuzzy approximation of a fuzzy rough set is given.The properties of the fuzzy approximation of a fuzzy rough set are studied and a fuzzy entropy measure for fuzzy rough sets is proposed.This measure is consistent with similar considerations for ordinary fuzzy sets and is the result of the fuzzy approximation of fuzzy rough sets.

  2. Boolean Operator Fuzzy Logic

    Institute of Scientific and Technical Information of China (English)

    刘叙华; 邓安生

    1994-01-01

    A new approach of operator fuzzy logic, Boolean operator fuzzy logic (BOFL) based on Boolean algebra, is presented. The resolution principle is also introduced into BOFL. BOFL is a natural generalization of classical logic and can be applied to the qualitative description of fuzzy knowledge.

  3. Paired fuzzy sets

    DEFF Research Database (Denmark)

    Rodríguez, J. Tinguaro; Franco de los Ríos, Camilo; Gómez, Daniel

    2015-01-01

    In this paper we want to stress the relevance of paired fuzzy sets, as already proposed in previous works of the authors, as a family of fuzzy sets that offers a unifying view for different models based upon the opposition of two fuzzy sets, simply allowing the existence of different types...

  4. Fuzzy Linguistic Topological Spaces

    CERN Document Server

    Kandasamy, W B Vasantha; Amal, K

    2012-01-01

    This book has five chapters. Chapter one is introductory in nature. Fuzzy linguistic spaces are introduced in chapter two. Fuzzy linguistic vector spaces are introduced in chapter three. Chapter four introduces fuzzy linguistic models. The final chapter suggests over 100 problems and some of them are at research level.

  5. Fuzzy Logic Engine

    Science.gov (United States)

    Howard, Ayanna

    2005-01-01

    The Fuzzy Logic Engine is a software package that enables users to embed fuzzy-logic modules into their application programs. Fuzzy logic is useful as a means of formulating human expert knowledge and translating it into software to solve problems. Fuzzy logic provides flexibility for modeling relationships between input and output information and is distinguished by its robustness with respect to noise and variations in system parameters. In addition, linguistic fuzzy sets and conditional statements allow systems to make decisions based on imprecise and incomplete information. The user of the Fuzzy Logic Engine need not be an expert in fuzzy logic: it suffices to have a basic understanding of how linguistic rules can be applied to the user's problem. The Fuzzy Logic Engine is divided into two modules: (1) a graphical-interface software tool for creating linguistic fuzzy sets and conditional statements and (2) a fuzzy-logic software library for embedding fuzzy processing capability into current application programs. The graphical- interface tool was developed using the Tcl/Tk programming language. The fuzzy-logic software library was written in the C programming language.

  6. Some weakly mappings on intuitionistic fuzzy topological spaces

    OpenAIRE

    Zhen-Guo Xu; Fu-Gui Shi

    2008-01-01

    In this paper, we shall introduce concepts of fuzzy semiopen set, fuzzy semiclosed set, fuzzy semiinterior, fuzzy semiclosure on intuitionistic fuzzy topological space and fuzzy open (fuzzy closed) mapping, fuzzy irresolute mapping, fuzzy irresolute open (closed) mapping, fuzzy semicontinuous mapping and fuzzy semiopen (semiclosed) mapping between two intuitionistic fuzzy topological spaces. Moreover, we shall discuss their some properties.

  7. Countable Fuzzy Topological Space and Countable Fuzzy Topological Vector Space

    Directory of Open Access Journals (Sweden)

    Apu Kumar Saha

    2015-06-01

    Full Text Available This paper deals with countable fuzzy topological spaces, a generalization of the notion of fuzzy topological spaces. A collection of fuzzy sets F on a universe X forms a countable fuzzy topology if in the definition of a fuzzy topology, the condition of arbitrary supremum is relaxed to countable supremum. In this generalized fuzzy structure, the continuity of fuzzy functions and some other related properties are studied. Also the class of countable fuzzy topological vector spaces as a generalization of the class of fuzzy topological vector spaces has been introduced and investigated.

  8. Mathematics of Fuzzy Sets and Fuzzy Logic

    CERN Document Server

    Bede, Barnabas

    2013-01-01

    This book presents a mathematically-based introduction into the fascinating topic of Fuzzy Sets and Fuzzy Logic and might be used as textbook at both undergraduate and graduate levels and also as reference guide for mathematician, scientists or engineers who would like to get an insight into Fuzzy Logic.   Fuzzy Sets have been introduced by Lotfi Zadeh in 1965 and since then, they have been used in many applications. As a consequence, there is a vast literature on the practical applications of fuzzy sets, while theory has a more modest coverage. The main purpose of the present book is to reduce this gap by providing a theoretical introduction into Fuzzy Sets based on Mathematical Analysis and Approximation Theory. Well-known applications, as for example fuzzy control, are also discussed in this book and placed on new ground, a theoretical foundation. Moreover, a few advanced chapters and several new results are included. These comprise, among others, a new systematic and constructive approach for fuzzy infer...

  9. Modelo de valor de marca para medios de prensa escritos en un contexto regional

    Directory of Open Access Journals (Sweden)

    Claudio Candia Campano

    2015-01-01

    Full Text Available El objetivo de la presente investigación es proponer una escala de medida de valor de marca para medios de prensa escritos. Para esto se desarrolló un proceso de 3 etapas constituido por: la elaboración de una escala con validez de contenido; la aplicación de un pre test cuantitativo a la escala construida y, finalmente, la recolección de datos con la escala mejorada y el análisis de las propiedades psicométricas de esta. Para evaluar las propiedades psicométricas se realizó, principalmente, un análisis factorial confirmatorio al modelo de ecuaciones estructurales que representa dicha escala de medida. Las 6 dimensiones explicativas resultantes son: lealtad afectiva-comportamental, lealtad cognitiva, asociaciones de marca, calidad percibida, reconocimiento de marca y recordación de marca.

  10. Modelo de valor de marca para medios de prensa escritos en un contexto regional

    Directory of Open Access Journals (Sweden)

    Claudio Candia Campano

    2015-04-01

    Full Text Available El objetivo de la presente investigación es proponer una escala de medida de valor de marca para medios de prensa escritos. Para esto se desarrolló un proceso de 3 etapas constituido por: la elaboración de una escala con validez de contenido; la aplicación de un pre test cuantitativo a la escala construida y, finalmente, la recolección de datos con la escala mejorada y el análisis de las propiedades psicométricas de esta. Para evaluar las propiedades psicométricas se realizó, principalmente, un análisis factorial confirmatorio al modelo de ecuaciones estructurales que representa dicha escala de medida. Las 6 dimensiones explicativas resultantes son: lealtad afectiva-comportamental, lealtad cognitiva, asociaciones de marca, calidad percibida, reconocimiento de marca y recordación de marca.

  11. How we pass from fuzzy $po$-semigroups to fuzzy $po$-$\\Gamma$-semigroups

    OpenAIRE

    Kehayopulu, Niovi

    2014-01-01

    The results on fuzzy ordered semigroups (or on fuzzy semigroups) can be transferred to fuzzy ordered gamma (or to fuzzy gamma) semigroups. We show the way we pass from fuzzy ordered semigroups to fuzzy ordered gamma semigroups.

  12. STATISTICS OF FUZZY DATA

    Directory of Open Access Journals (Sweden)

    Orlov A. I.

    2016-05-01

    Full Text Available Fuzzy sets are the special form of objects of nonnumeric nature. Therefore, in the processing of the sample, the elements of which are fuzzy sets, a variety of methods for the analysis of statistical data of any nature can be used - the calculation of the average, non-parametric density estimators, construction of diagnostic rules, etc. We have told about the development of our work on the theory of fuzziness (1975 - 2015. In the first of our work on fuzzy sets (1975, the theory of random sets is regarded as a generalization of the theory of fuzzy sets. In non-fiction series "Mathematics. Cybernetics" (publishing house "Knowledge" in 1980 the first book by a Soviet author fuzzy sets is published - our brochure "Optimization problems and fuzzy variables". This book is essentially a "squeeze" our research of 70-ies, ie, the research on the theory of stability and in particular on the statistics of objects of non-numeric nature, with a bias in the methodology. The book includes the main results of the fuzzy theory and its note to the random set theory, as well as new results (first publication! of statistics of fuzzy sets. On the basis of further experience, you can expect that the theory of fuzzy sets will be more actively applied in organizational and economic modeling of industry management processes. We discuss the concept of the average value of a fuzzy set. We have considered a number of statements of problems of testing statistical hypotheses on fuzzy sets. We have also proposed and justified some algorithms for restore relationships between fuzzy variables; we have given the representation of various variants of fuzzy cluster analysis of data and variables and described some methods of collection and description of fuzzy data

  13. On generalized fuzzy strongly semiclosed sets in fuzzy topological spaces

    Directory of Open Access Journals (Sweden)

    Oya Bedre Ozbakir

    2002-01-01

    semiclosed, generalized fuzzy almost-strongly semiclosed, generalized fuzzy strongly closed, and generalized fuzzy almost-strongly closed sets. In the light of these definitions, we also define some generalizations of fuzzy continuous functions and discuss the relations between these new classes of functions and other fuzzy continuous functions.

  14. EXTENSION OF THE PROJECTION THEOREM ON HILBERT SPACE TO FUZZY HILBERT SPACE OVER FUZZY NUMBER SPACE

    OpenAIRE

    K. P. DEEPA; Dr.S.Chenthur Pandian

    2012-01-01

    In this paper, we extend the projection theorem on Hilbert space to its fuzzy version over fuzzy number space embedded with fuzzy number mapping. To prove this we discuss the concepts of fuzzy Hilbert space over fuzzy number space with fuzzy number mapping. The fuzzy orthogonality, fuzzy orthonormality, fuzzy complemented subset property etc. of fuzzy Hilbert space over fuzzy number space using fuzzy number mapping also been discussed.

  15. On fuzzy weakly-closed sets

    OpenAIRE

    Mahanta, J.; P. K. Das

    2012-01-01

    A new class of fuzzy closed sets, namely fuzzy weakly closed set in a fuzzy topological space is introduced and it is established that this class of fuzzy closed sets lies between fuzzy closed sets and fuzzy generalized closed sets. Alongwith the study of fundamental results of such closed sets, we define and characterize fuzzy weakly compact space and fuzzy weakly closed space.

  16. Compactness in intuitionistic fuzzy topological spaces

    Directory of Open Access Journals (Sweden)

    S. E. Abbas

    2005-02-01

    Full Text Available We introduce fuzzy almost continuous mapping, fuzzy weakly continuous mapping, fuzzy compactness, fuzzy almost compactness, and fuzzy near compactness in intuitionistic fuzzy topological space in view of the definition of Å ostak, and study some of their properties. Also, we investigate the behavior of fuzzy compactness under several types of fuzzy continuous mappings.

  17. Fuzzy social choice theory

    CERN Document Server

    B Gibilisco, Michael; E Albert, Karen; N Mordeson, John; J Wierman, Mark; D Clark, Terry

    2014-01-01

    This book offers a comprehensive analysis of the social choice literature and shows, by applying fuzzy sets, how the use of fuzzy preferences, rather than that of strict ones, may affect the social choice theorems. To do this, the book explores the presupposition of rationality within the fuzzy framework and shows that the two conditions for rationality, completeness and transitivity, do exist with fuzzy preferences. Specifically, this book examines: the conditions under which a maximal set exists; the Arrow’s theorem;  the Gibbard-Satterthwaite theorem; and the median voter theorem.  After showing that a non-empty maximal set does exists for fuzzy preference relations, this book goes on to demonstrating the existence of a fuzzy aggregation rule satisfying all five Arrowian conditions, including non-dictatorship. While the Gibbard-Satterthwaite theorem only considers individual fuzzy preferences, this work shows that both individuals and groups can choose alternatives to various degrees, resulting in a so...

  18. Special functions in Fuzzy Analysis

    Directory of Open Access Journals (Sweden)

    Angel Garrido

    2006-01-01

    Full Text Available In the treatment of Fuzzy Logic an useful tool appears: the membership function, with the information about the degree of completion of a condition which defines the respective Fuzzy Set or Fuzzy Relation. With their introduction, it is possible to prove some results on the foundations of Fuzzy Logic and open new ways in Fuzzy Analysis.

  19. Vector-valued fuzzy multifunctions

    Directory of Open Access Journals (Sweden)

    Ismat Beg

    2001-01-01

    Full Text Available Some of the properties of vector-valued fuzzy multifunctions are studied. The notion of sum fuzzy multifunction, convex hull fuzzy multifunction, close convex hull fuzzy multifunction, and upper demicontinuous are given, and some of the properties of these fuzzy multifunctions are investigated.

  20. Approximate Reasoning with Fuzzy Booleans

    NARCIS (Netherlands)

    Broek, van den P.M.; Noppen, J.A.R.

    2004-01-01

    This paper introduces, in analogy to the concept of fuzzy numbers, the concept of fuzzy booleans, and examines approximate reasoning with the compositional rule of inference using fuzzy booleans. It is shown that each set of fuzzy rules is equivalent to a set of fuzzy rules with singleton crisp ante

  1. Fuzzy Sets and Mathematical Education.

    Science.gov (United States)

    Alsina, C.; Trillas, E.

    1991-01-01

    Presents the concept of "Fuzzy Sets" and gives some ideas for its potential interest in mathematics education. Defines what a Fuzzy Set is, describes why we need to teach fuzziness, gives some examples of fuzzy questions, and offers some examples of activities related to fuzzy sets. (MDH)

  2. A terapia cognitivo-comportamental no transtorno obsessivo-compulsivo Cognitive-behavioral therapy in obsessive-compulsive disorder

    Directory of Open Access Journals (Sweden)

    Aristides Volpato Cordioli

    2008-10-01

    Full Text Available OBJETIVO: Descrever a terapia cognitivo-comportamental no tratamento dos sintomas do transtorno obsessivo-compulsivo. MÉTODO: Por meio da revisão de artigos e livros-texto, descrever as origens e os fundamentos da terapia cognitivo-comportamental no tratamento dos sintomas do transtorno obsessivo-compulsivo. Por meio da revisão no Medline de ensaios clínicos randomizados e metanálises, apontar as evidências de eficácia dessa modalidade de tratamento. RESULTADOS E CONCLUSÕES: A terapia cognitivo-comportamental é efetiva na redução dos sintomas obsessivo-compulsivos em aproximadamente 70% dos pacientes que aderem ao tratamento. São desafios futuros esclarecer as razões pelas quais muitos portadores não respondem ao tratamento e desenvolver novas estratégias para aumentar sua efetividade.OBJECTIVE: To describe the cognitive-behavioral therapy in the treatment of the symptoms of obsessive-compulsive disorder. METHOD: Through the revision of text books and articles the origins and fundamentals of cognitive-behavioral therapy in the treatment of the symptoms of obsessive-compulsive disorder are presented. Through the review of randomized clinical trials and meta-analysis in Medline the evidences of effectiveness of cognitive-behavioral therapy in obsessive-compulsive disorder are highlighted. RESULTS AND CONCLUSIONS: The cognitive-behavioral therapy is effective in reducing symptoms of obsessive-compulsive disorder by approximately 70% of patients who adhere to treatment. The challenges ahead are to clarify the reasons why many patients do not respond to this kind of treatment and develop new strategies to increase its effectiveness.

  3. Razão e emoção: uma leitura analítico-comportamental de avanços recentes nas neurociências Reason and emotion: a behavior-analytic interpretation of recent advances in neurosciences

    Directory of Open Access Journals (Sweden)

    Rosângela Araújo Darwich

    2005-08-01

    Full Text Available Achados recentes das neurociências apresentam uma visão integrada do funcionamento humano que envolve a presença de relações entre os grandes sistemas orgânicos, entre estados fisiológicos e cognitivos e entre razão e emoção. Este artigo objetiva contrastar tais estudos a aspectos centrais do modelo interpretativo skinneriano, destacando o papel de relações entre processos respondentes e operantes para a compreensão da interdependência entre razão e emoção. Investiga-se a importância de respostas emocionais e do comportamento verbal para a expressão de respostas tidas como racionais e, de uma maneira geral, para a seleção do repertório comportamental, verbal e não-verbal. Ressalta-se que o atual movimento de superação de propostas dualistas de compreensão do ser humano pelas neurociências aproxima-se da perspectiva analítico-comportamental de investigação de respostas abertas e encobertas no contexto de relações indivíduo-ambiente.Recent findings of the neurosciences present an integrated view of the human functioning, one that encompasses the relationships among the great organic systems, between physiological and cognitive states and between reason and emotion. The aim of this paper is to contrast such studies with central aspects of the Skinnerian explanatory system, highlighting the role of relations between respondent and operant processes for an understanding of the interdependence between reason and emotion. The importance of emotional responses and verbal behavior for rational responding and, moreover, for the selection of verbal and non-verbal behavioral repertoire, is discussed. It is argued that the current movement in the neurosciences towards overcoming dualistic views of the human being is compatible with the behavior-analytic approach to overt and covert responses in the context of individual-environment relations.

  4. Terapia cognitivo-comportamental no transtorno de pânico Cognitive-behavioral therapy in panic disorder

    Directory of Open Access Journals (Sweden)

    Gisele Gus Manfro

    2008-10-01

    Full Text Available OBJETIVO: O transtorno de pânico é uma condição crônica e recorrente que prejudica a qualidade de vida e o funcionamento psicossocial dos portadores. Embora os medicamentos sejam efetivos na redução dos ataques de pânico, muitos pacientes não respondem adequadamente a essas intervenções. A terapia cognitivo-comportamental fornece um método alternativo eficaz para tratar transtorno de pânico e evitação agorafóbica. O objetivo do estudo é o de descrever o uso de técnicas cognitivo-comportamentais no tratamento do transtorno de pânico. MÉTODO: Revisão narrativa a partir dos bancos de dados do Medline, SciELO e PsycInfo e de livros-texto especializados. RESULTADOS: Foram descritos os fundamentos da terapia cognitivo-comportamental no tratamento do transtorno pânico e revisadas as evidências de eficácia em curto e longo prazos. O uso de medicação concomitante a terapia cognitivo-comportamental foi também discutido. CONCLUSÕES: A terapia cognitivo-comportamental individual ou em grupo é eficaz para pacientes com transtorno de pânico, seja como tratamento de primeira linha ou como um próximo passo para pacientes com resposta parcial a outros tratamentos.OBJECTIVE: Panic disorder is a chronic and recurrent condition that impairs an individual's psychosocial functioning and quality of life. Despite the efficacy of psychopharmacological treatment in reducing panic attacks, many patients fail to respond adequately to these interventions. Cognitive behavioral therapy provides an alternative and efficacious method for treating panic disorder and agoraphobic avoidance. The objective of the study is to describe the use of cognitive behavioral therapy for panic disorder. METHOD: Narrative review of data collected from Medline, SciELO and PsycInfo and specialized textbooks. RESULTS: We describe the cognitive-behavioral model for the treatment of panic disorder, and review both short and long-term efficacy findings. We also discuss

  5. Treinamento físico intervalado como ferramenta na terapia cognitivo-comportamental do transtorno de pânico

    OpenAIRE

    Aline Sardinha; Claudio Gil Soares de Araújo; Antonio Egidio Nardi

    2011-01-01

    Este trabalho consiste no relato da utilização de um programa de exercícios físicos aeró-bicos intervalados no contexto da terapia cognitivo-comportamental em um caso de transtorno de pânico e agorafobia. São descritos os procedimentos utilizados, bem como os resultados positivos obtidos na redução da ansiedade cardíaca e na ansiedade cotidiana em relação a situações que exigem esforço físico.

  6. Proposta de pré-consulta comportamental: análise de uso do protocolo durante consultas

    OpenAIRE

    Kohlsdorf,Marina; Costa Junior, Ánderson Luiz

    2015-01-01

    Constitui objetivo deste trabalho analisar a maneira como médicos, cuidadores e crianças utilizam protocolos de estimativas de assuntos para discussão, procedimento denominado pré-consulta comportamental, durante atendimentos em onco-hematologia pediátrica. Participaram da pesquisa 3 pediatras e 24 díades criança-cuidador; cada dupla foi entrevistada antes de consultas para registrar dúvidas, demandas e assuntos estimados para o atendimento. Essa lista era anexada ao prontuário como um lembre...

  7. Análisis comportamental aplicado (ACA) y trastornos generalizados del desarrollo (TGD): su evaluación en Argentina

    OpenAIRE

    María de los Angeles Matos; Alba Elisabeth Mustaca

    2005-01-01

    Se presentan los resultados obtenidos con la intervención basada en Análisis Comportamental Aplicado (ACA) o manejo de contingencias, en 9 niños (8 varones y 1 mujer) de 2 a 5 años con Trastornos Generalizados del Desarrollo (TGD). Este tratamiento basado en métodos desarrollados por Lovaas y colaboradores (1981) fue implementado en una institución argentina especializada. Se evaluaron las siguientes áreas: comprensión del lenguaje, funciones del comportamiento, nivel ...

  8. A terapia cognitivo-comportamental em grupo no Transtorno de Ansiedade Social

    Directory of Open Access Journals (Sweden)

    Carolina Pereira Dittz

    2015-11-01

    Full Text Available O transtorno de ansiedade social (TAS, caracterizado pelo medo ou ansiedade acentuados em situações sociais, é capaz de comprometer significativamente a qualidade de vida do indivíduo. O estudo visou descrever o desenvolvimento de uma intervenção em grupo, baseada na Terapia Cognitivo-Comportamental, para pessoas que apresentaram os sintomas de TAS. O protocolo de tratamento utilizou as seguintes técnicas: reestruturação cognitiva, exposição às situações temidas, treino de habilidades sociais e relaxamento. O grupo foi formado por cinco voluntários acima dos 18 anos, da cidade de Juiz de Fora - Minas Gerais, os quais apresentaram pontuações elevadas em instrumentos de rastreio para o TAS. Foram realizados 16 encontros presenciais, com duração de 90 minutos. O estudo se dividiu em cinco fases: acolhimento, habituação, treinamento de habilidades, prevenção de recaída e finalização. Os resultados mostraram que os participantes tiveram melhoras, nos escores dos testes: Liebowitz, BAI e BDI (administrados antes e depois do tratamento e nas observações clínicas realizadas, principalmente na forma de lidar com as situações sociais em pequenos grupos (participar e falar. Foi possível concluir que o protocolo de atendimento alcançou seus objetivos no tratamento do transtorno de ansiedade social. Entretanto, são necessárias alterações para que os resultados sejam provados mais satisfatoriamente.

  9. Validação do teste Need For Cognition: um estudo em contabilidade comportamental

    Directory of Open Access Journals (Sweden)

    Raimundo Nonato Lima Filho

    2013-01-01

    Full Text Available Este estudo teve como objetivo validar a escala Need For Cognition (NFC em estudos em Contabilidade comportamental. Ademais, buscou-se medir possíveis correlações entre o nível de necessidade de cognição e a existência de vieses cognitivos em decisões contábeis e financeiras. Para efetivar o processo de validação completo, foram realizadas duas validações - critério e construto. A análise foi feita mediante a apreciação de uma amostra formada por 128 estudantes de pós-graduação. A técnica estatística utilizada para validação desse teste foi a análise fatorial, por possuir a capacidade de determinar o grau de influência de determinada variável na explicação de um fator, e, para o tratamento dos dados, foi utilizada a regressão logística por possibilitar a explicação de valores em função de valores conhecidos ou de variáveis independentes. Os resultados da validade de construto apontaram a legitimidade do NFC como escala unidimensional, excluindo-se três outputs de sua escala original; já os resultados da validade de critério confirmaram o impacto do nível de cognição na maximização da ocorrência de heurísticas em decisões gerenciais.

  10. On fuzzy almost continuous convergence in fuzzy function spaces

    Directory of Open Access Journals (Sweden)

    A.I. Aggour

    2013-10-01

    Full Text Available In this paper, we study the fuzzy almost continuous convergence of fuzzy nets on the set FAC(X, Y of all fuzzy almost continuous functions of a fuzzy topological space X into another Y. Also, we introduce the notions of fuzzy splitting and fuzzy jointly continuous topologies on the set FAC(X, Y and study some of its basic properties.

  11. A New Type Fuzzy Module over Fuzzy Rings

    Directory of Open Access Journals (Sweden)

    Ece Yetkin

    2014-01-01

    Full Text Available A new kind of fuzzy module over a fuzzy ring is introduced by generalizing Yuan and Lee’s definition of the fuzzy group and Aktaş and Çağman’s definition of fuzzy ring. The concepts of fuzzy submodule, and fuzzy module homomorphism are studied and some of their basic properties are presented analogous of ordinary module theory.

  12. Modelos mentais de eletromagnetismo

    OpenAIRE

    Borges, Antônio Tarciso; UFMG - Minas Gerais

    1998-01-01

    Modelos mentais são empregados correntemente em diversas áreas do conhecimento. A diversidade de usos de tal construção envolve não apenas diferentes definições do conceito, mas também pressupostos e compromissos. Este trabalho discute os usos e pressupostos envolvidos no conceito de modelo mental em algumas áreas, e relata um estudo que procurou identificar os modelos mentais de eletricidade, de magnetismo e de eletromagnetismo usados por estudantes iniciando e concluind...

  13. Decision making with fuzzy probability assessments and fuzzy payoff

    Institute of Scientific and Technical Information of China (English)

    Song Yexin; Yin Di; Chen Mianyun

    2005-01-01

    A novel method for decision making with fuzzy probability assessments and fuzzy payoff is presented. The consistency of the fuzzy probability assessment is considered. A fuzzy aggregate algorithm is used to indicate the fuzzy expected payoff of alternatives. The level sets of each fuzzy expected payoff are then obtained by solving linear programming models. Based on a defuzzification function associated with the level sets of fuzzy number and a numerical integration formula (Newton-Cotes formula), an effective approach to rank the fuzzy expected payoff of alternatives is also developed to determine the best alternative. Finally, a numerical example is provided to illustrate the proposed method.

  14. Generation of fuzzy mathematical morphologies

    OpenAIRE

    2001-01-01

    Fuzzy Mathematical Morphology aims to extend the binary morphological operators to grey-level images. In order to define the basic morphological operations fuzzy erosion, dilation, opening and closing, we introduce a general method based upon fuzzy implication and inclusion grade operators, including as particular case, other ones existing in related literature In the definition of fuzzy erosion and dilation we use several fuzzy implications (Annexe A, Table of fuzzy implic...

  15. Introduction to Fuzzy Set Theory

    Science.gov (United States)

    Kosko, Bart

    1990-01-01

    An introduction to fuzzy set theory is described. Topics covered include: neural networks and fuzzy systems; the dynamical systems approach to machine intelligence; intelligent behavior as adaptive model-free estimation; fuzziness versus probability; fuzzy sets; the entropy-subsethood theorem; adaptive fuzzy systems for backing up a truck-and-trailer; product-space clustering with differential competitive learning; and adaptive fuzzy system for target tracking.

  16. The fuzzy space construction kit

    CERN Document Server

    Sykora, Andreas

    2016-01-01

    Fuzzy spaces like the fuzzy sphere or the fuzzy torus have received remarkable attention, since they appeared as objects in string theory. Although there are higher dimensional examples, the most known and most studied fuzzy spaces are realized as matrix algebras defined by three Hermitian matrices, which may be seen as fuzzy membrane or fuzzy surface. We give a mapping between directed graphs and matrix algebras defined by three Hermitian matrices and show that the matrix algebras of known two-dimensional fuzzy spaces are associated with unbranched graphs. By including branchings into the graphs we find matrix algebras that represent fuzzy spaces associated with surfaces having genus 2 and higher.

  17. Fuzzy Model for Trust Evaluation

    Institute of Scientific and Technical Information of China (English)

    Zhang Shibin; He Dake

    2006-01-01

    Based on fuzzy set theory, a fuzzy trust model is established by using membership function to describe the fuzziness of trust. The trust vectors of subjective trust are obtained based on a mathematical model of fuzzy synthetic evaluation. Considering the complicated and changeable relationships between various subjects, the multi-level mathematical model of fuzzy synthetic evaluation is introduced. An example of a two-level fuzzy synthetic evaluation model confirms the feasibility of the multi-level fuzzy synthesis evaluation model. The proposed fuzzy model for trust evaluation may provide a promising method for research of trust model in open networks.

  18. Intuitionistic fuzzy calculus

    CERN Document Server

    Lei, Qian

    2017-01-01

    This book offers a comprehensive and systematic review of the latest research findings in the area of intuitionistic fuzzy calculus. After introducing the intuitionistic fuzzy numbers’ operational laws and their geometrical and algebraic properties, the book defines the concept of intuitionistic fuzzy functions and presents the research on the derivative, differential, indefinite integral and definite integral of intuitionistic fuzzy functions. It also discusses some of the methods that have been successfully used to deal with continuous intuitionistic fuzzy information or data, which are different from the previous aggregation operators focusing on discrete information or data. Mainly intended for engineers and researchers in the fields of fuzzy mathematics, operations research, information science and management science, this book is also a valuable textbook for postgraduate and advanced undergraduate students alike.

  19. Foundations Of Fuzzy Control

    DEFF Research Database (Denmark)

    Jantzen, Jan

    as any PID controller. In the nonlinear domain, the stability of four standard control surfaces is analysed by means of describing functions and Nyquist plots. The self-organizing controller (SOC) is shown to be a model reference adaptive controller. There is a possibility that a nonlinear fuzzy PID......The objective of this textbook is to acquire an understanding of the behaviour of fuzzy logic controllers. Under certain conditions a fuzzy controller is equivalent to a proportional-integral-derivative (PID) controller. Using that equivalence as a link, the book applies analysis methods from...... linear and nonlinear control theory. In the linear domain, PID tuning methods and stability analyses are transferred to linear fuzzy controllers. The Nyquist plot shows the robustness of different settings of the fuzzy gain parameters. As a result, a fuzzy controller is guaranteed to perform as well...

  20. Foundations Of Fuzzy Control

    DEFF Research Database (Denmark)

    Jantzen, Jan

    linear and nonlinear control theory. In the linear domain, PID tuning methods and stability analyses are transferred to linear fuzzy controllers. The Nyquist plot shows the robustness of different settings of the fuzzy gain parameters. As a result, a fuzzy controller is guaranteed to perform as well......The objective of this textbook is to acquire an understanding of the behaviour of fuzzy logic controllers. Under certain conditions a fuzzy controller is equivalent to a proportional-integral-derivative (PID) controller. Using that equivalence as a link, the book applies analysis methods from...... as any PID controller. In the nonlinear domain, the stability of four standard control surfaces is analysed by means of describing functions and Nyquist plots. The self-organizing controller (SOC) is shown to be a model reference adaptive controller. There is a possibility that a nonlinear fuzzy PID...

  1. Encoprese e constipação em gêmeos: um estudo de caso em ludoterapia comportamental

    Directory of Open Access Journals (Sweden)

    Laura dos Santos Gomes Coelho

    Full Text Available Relato de tratamento em ludoterapia comportamental de gêmeos (4 anos onde uma das crianças apresentava encoprese secundária retentiva e a outra apresentava constipação. O tratamento consistiu em avaliação (entrevista e observação, linha de base (padrão de defecação e intervenções (habituação comportamental, treino intestinal, monitoramento através de gráficos e biblioterapia. Em relação à linha de base, o padrão de defecação dos gêmeos quadruplicou. Foram discutidos os fatores que possibilitaram a mudança no padrão de defecação dos gêmeos e a importância de se investigar os fatores responsáveis pelas diferenças individuais em quadros de encoprese.

  2. Transtornos alimentares de ordem comportamental e seus efeitos sobre a saúde bucal na adolescência

    Directory of Open Access Journals (Sweden)

    TRAEBERT Jefferson

    2001-01-01

    Full Text Available Anorexia nervosa é um distúrbio de ordem comportamental definido como inanição deliberada e auto-imposta seguida de busca constante de magreza e medo mórbido de engordar. Bulimia nervosa também é um distúrbio de comportamento caracterizada pela ingestão compulsiva de grande quantidade de alimentos, alternando-se com ações dirigidas a evitar ganho de peso, como por exemplo o vômito auto-induzido. A ocorrência destas doenças tem aumentado, embora não existam dados epidemiológicos de ordem populacional no Brasil. Tais distúrbios geram freqüentemente erosão dental devido ao ambiente bucal extremamente ácido resultante do comportamento dos pacientes. O cirurgião-dentista pode ser o primeiro profissional a detectar estas doenças. Assim, o objetivo deste trabalho é contribuir para a familiarização do cirurgião-dentista com os primeiros sinais e sintomas destas importantes doenças de ordem comportamental.

  3. FINANÇAS COMPORTAMENTAIS: ANÁLISE DO PERFIL COMPORTAMENTAL DO INVESTIDOR E DO PROPENSO INVESTIDOR

    Directory of Open Access Journals (Sweden)

    Wesley Vieira Silva

    2008-11-01

    Section1 {size:595.3pt 841.9pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:35.4pt; mso-footer-margin:35.4pt; mso-paper-source:0;} div.Section1 {page:Section1;} -->

    RESUMO

    Finanças comportamentais, também conhecidas por Economia Comportamental, representam um novo campo na teoria financeira que busca incorporar os aspectos psicológicos dos indivíduos no processo de avaliação e precificação de ativos financeiros. Este novo campo do estudo de Finanças tem como objetivos a revisão e o aperfeiçoamento do modelo econômico-financeiro atual, pela incorporação de evidências sobre a irracionalidade do investidor. A fim de obter maiores informações sobre o perfil comportamental de investidores e propensos investidores, realizou-se uma pesquisa descritiva de natureza quantitativa baseada na aplicação de um questionário estruturado composto de 20 perguntas direcionadas a 164 discentes e 33 docentes do curso de Administração da Pontifícia Universidade Católica do Paraná. Os

  4. Metamathematics of fuzzy logic

    CERN Document Server

    Hájek, Petr

    1998-01-01

    This book presents a systematic treatment of deductive aspects and structures of fuzzy logic understood as many valued logic sui generis. Some important systems of real-valued propositional and predicate calculus are defined and investigated. The aim is to show that fuzzy logic as a logic of imprecise (vague) propositions does have well-developed formal foundations and that most things usually named `fuzzy inference' can be naturally understood as logical deduction.

  5. Fuzzy Control Tutorial

    DEFF Research Database (Denmark)

    Dotoli, M.; Jantzen, Jan

    1999-01-01

    The tutorial concerns automatic control of an inverted pendulum, especially rule based control by means of fuzzy logic. A ball balancer, implemented in a software simulator in Matlab, is used as a practical case study. The objectives of the tutorial are to teach the basics of fuzzy control......, and to show how to apply fuzzy logic in automatic control. The tutorial is distance learning, where students interact one-to-one with the teacher using e-mail....

  6. Fuzzy Control Tutorial

    DEFF Research Database (Denmark)

    Dotoli, M.; Jantzen, Jan

    1999-01-01

    The tutorial concerns automatic control of an inverted pendulum, especially rule based control by means of fuzzy logic. A ball balancer, implemented in a software simulator in Matlab, is used as a practical case study. The objectives of the tutorial are to teach the basics of fuzzy control, and t......, and to show how to apply fuzzy logic in automatic control. The tutorial is distance learning, where students interact one-to-one with the teacher using e-mail....

  7. Design of Fuzzy Controllers

    DEFF Research Database (Denmark)

    Jantzen, Jan

    1998-01-01

    Design of a fuzzy controller requires more design decisions than usual, for example regarding rule base, inference engine, defuzzification, and data pre- and post processing. This tutorial paper identifies and describes the design choices related to single-loop fuzzy control, based...... on an international standard which is underway. The paper contains also a design approach, which uses a PID controller as a starting point. A design engineer can view the paper as an introduction to fuzzy controller design....

  8. Intuitionistic fuzzy logics

    CERN Document Server

    T Atanassov, Krassimir

    2017-01-01

    The book offers a comprehensive survey of intuitionistic fuzzy logics. By reporting on both the author’s research and others’ findings, it provides readers with a complete overview of the field and highlights key issues and open problems, thus suggesting new research directions. Starting with an introduction to the basic elements of intuitionistic fuzzy propositional calculus, it then provides a guide to the use of intuitionistic fuzzy operators and quantifiers, and lastly presents state-of-the-art applications of intuitionistic fuzzy sets. The book is a valuable reference resource for graduate students and researchers alike.

  9. AUV fuzzy neural BDI

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    The typical BDI (belief desire intention) model of agent is not efficiently computable and the strict logic expression is not easily applicable to the AUV (autonomous underwater vehicle) domain with uncertainties. In this paper, an AUV fuzzy neural BDI model is proposed. The model is a fuzzy neural network composed of five layers: input ( beliefs and desires) , fuzzification, commitment, fuzzy intention, and defuzzification layer. In the model, the fuzzy commitment rules and neural network are combined to form intentions from beliefs and desires. The model is demonstrated by solving PEG (pursuit-evasion game), and the simulation result is satisfactory.

  10. Relación entre el modelo híbrido de las funciones ejecutivas y el trastorno por déficit de atención con hiperactividad

    OpenAIRE

    2015-01-01

    Las funciones ejecutivas engloban distintas habilidades mentales que permiten el funciona - miento metacognitivo y la regulación comportamental consciente. Cuando estos componentes se encuentran afectados, se presentan dificultades en el desempeño social, escolar, personal y familiar. Uno de los trastornos del neurodesarrollo que tiene mayor relación a afectación ejecutiva es el TDAH . En el presente artículo se realiza una revisión sobre la relación existente entre el modelo híbrido de ...

  11. Trabalhando habilidades sociais sob a ótica da psicoterapia comportamental infantil em grupo - doi: 10.5102/ucs.v1i1.492

    Directory of Open Access Journals (Sweden)

    Simone Roballo

    2008-04-01

    Full Text Available O presente artigo tem como objetivo destacar a relevância do trabalho da Terapia Comportamental Infantil em grupo no que se refere ao desenvolvimento das habilidades sociais em crianças, a partir do relato de uma experiência desenvolvida no CENFOR-UniCEUB. Para tanto, inicialmente traz-se a definição de alguns autores sobre habilidades sociais e faz-se uma revisão dos aspectos que a literatura aponta como aspectos positivos da Terapia Comportamental em Grupo. Em seguida, relata um estudo de caso de atuação clínica de um grupo de crianças, na faixa etária de 5 a 8 anos, que consistiu das seguintes fases: diagnóstico, intervenções e avaliações. Os procedimentos utilizados foram as técnicas da terapia comportamental, mediação verbal e recursos lúdicos. Os resultados deste estudo apresentam consonância com os dados pesquisados na literatura: a terapia comportamental em grupo traz muitos benefícios no desenvolvimento de habilidades sociais.

  12. Segmentação Comportamental, Do Not Track e o desenvolvimento jurídico europeu e holandês

    NARCIS (Netherlands)

    Zuiderveen Borgesius, F.

    2013-01-01

    A segmentação comportamental (behavioral targeting) é o monitoramento que se faz do comportamento das pessoas na Internet ao longo do tempo, para usar as informações recolhidas com o intuito de dirigir-lhes publicidade conforme as inferências a respeito de seus interesses. Este tipo de negócio cresc

  13. Segmentação Comportamental, Do Not Track e o desenvolvimento jurídico europeu e holandês

    NARCIS (Netherlands)

    Zuiderveen Borgesius, F.

    2013-01-01

    A segmentação comportamental (behavioral targeting) é o monitoramento que se faz do comportamento das pessoas na Internet ao longo do tempo, para usar as informações recolhidas com o intuito de dirigir-lhes publicidade conforme as inferências a respeito de seus interesses. Este tipo de negócio

  14. Segmentação Comportamental, Do Not Track e o desenvolvimento jurídico europeu e holandês

    NARCIS (Netherlands)

    Zuiderveen Borgesius, F.

    2013-01-01

    A segmentação comportamental (behavioral targeting) é o monitoramento que se faz do comportamento das pessoas na Internet ao longo do tempo, para usar as informações recolhidas com o intuito de dirigir-lhes publicidade conforme as inferências a respeito de seus interesses. Este tipo de negócio cresc

  15. RANDOM VARIABLE WITH FUZZY PROBABILITY

    Institute of Scientific and Technical Information of China (English)

    吕恩琳; 钟佑明

    2003-01-01

    Mathematic description about the second kind fuzzy random variable namely the random variable with crisp event-fuzzy probability was studied. Based on the interval probability and using the fuzzy resolution theorem, the feasible condition about a probability fuzzy number set was given, go a step further the definition arid characters of random variable with fuzzy probability ( RVFP ) and the fuzzy distribution function and fuzzy probability distribution sequence of the RVFP were put forward. The fuzzy probability resolution theorem with the closing operation of fuzzy probability was given and proved. The definition and characters of mathematical expectation and variance of the RVFP were studied also. All mathematic description about the RVFP has the closing operation for fuzzy probability, as a result, the foundation of perfecting fuzzy probability operation method is laid.

  16. Relations Among Some Fuzzy Entropy Formulae

    Institute of Scientific and Technical Information of China (English)

    卿铭

    2004-01-01

    Fuzzy entropy has been widely used to analyze and design fuzzy systems, and many fuzzy entropy formulae have been proposed. For further in-deepth analysis of fuzzy entropy, the axioms and some important formulae of fuzzy entropy are introduced. Some equivalence results among these fuzzy entropy formulae are proved, and it is shown that fuzzy entropy is a special distance measurement.

  17. Results on fuzzy soft topological spaces

    CERN Document Server

    Mahanta, J

    2012-01-01

    B. Tanay et. al. introduced and studied fuzzy soft topological spaces. Here we introduce fuzzy soft point and study the concept of neighborhood of a fuzzy soft point in a fuzzy soft topological space. We also study fuzzy soft closure and fuzzy soft interior. Separation axioms and connectedness are introduced and investigated for fuzzy soft topological spaces.

  18. Some properties of fuzzy soft proximity spaces.

    Science.gov (United States)

    Demir, İzzettin; Özbakır, Oya Bedre

    2015-01-01

    We study the fuzzy soft proximity spaces in Katsaras's sense. First, we show how a fuzzy soft topology is derived from a fuzzy soft proximity. Also, we define the notion of fuzzy soft δ-neighborhood in the fuzzy soft proximity space which offers an alternative approach to the study of fuzzy soft proximity spaces. Later, we obtain the initial fuzzy soft proximity determined by a family of fuzzy soft proximities. Finally, we investigate relationship between fuzzy soft proximities and proximities.

  19. Some Properties of Fuzzy Soft Proximity Spaces

    Science.gov (United States)

    Demir, İzzettin; Özbakır, Oya Bedre

    2015-01-01

    We study the fuzzy soft proximity spaces in Katsaras's sense. First, we show how a fuzzy soft topology is derived from a fuzzy soft proximity. Also, we define the notion of fuzzy soft δ-neighborhood in the fuzzy soft proximity space which offers an alternative approach to the study of fuzzy soft proximity spaces. Later, we obtain the initial fuzzy soft proximity determined by a family of fuzzy soft proximities. Finally, we investigate relationship between fuzzy soft proximities and proximities. PMID:25793224

  20. On Intuitionistic Fuzzy Filters of Intuitionistic Fuzzy Coframes

    Directory of Open Access Journals (Sweden)

    Rajesh K. Thumbakara

    2013-01-01

    Full Text Available Frame theory is the study of topology based on its open set lattice, and it was studied extensively by various authors. In this paper, we study quotients of intuitionistic fuzzy filters of an intuitionistic fuzzy coframe. The quotients of intuitionistic fuzzy filters are shown to be filters of the given intuitionistic fuzzy coframe. It is shown that the collection of all intuitionistic fuzzy filters of a coframe and the collection of all intutionistic fuzzy quotient filters of an intuitionistic fuzzy filter are coframes.

  1. en modelos de vecindad

    Directory of Open Access Journals (Sweden)

    L. Gómez-Aparicio

    2013-01-01

    Full Text Available Métodos de máxima verosimilitud en ecología y su aplicación en modelos de vecindad. Los métodos de máxima verosimilitud (MMV ofrecen un marco alternativo a la estadística frecuentista convencional, alejándose del uso del p-valor para el rechazo de una única hipótesis nula y optando por el uso de las verosimilitudes para evaluar el grado de apoyo en los datos a un conjunto de hipótesis alternativas (o modelos de interés para el investigador. Estos métodos han sido ampliamente aplicados en ecología en el marco de los modelos de vecindad. Dichos modelos usan una aproximación especialmente explícita para describir procesos demográficos de plantas o procesos eco sistémicos en función de los atributos de los individuos vecinos. Se trata por tanto de modelos fenomenológicos cuya principal utilidad radica en funcionar como herramientas de síntesis de los múltiples mecanismos por los que las especies pueden interactuar e influenciar su entorno, proporcionando una medida del efecto per cápita de individuos de distintas características (ej. tamaño, especie, rasgos fisiológicos sobre los procesos de interés. La gran ventaja de aplicar los MMV en el marco de los modelos de vecindad es que permite ajustar y comparar múltiples modelos que usen distintos atributos de los vecinos y/o formas funcionales para seleccionar aquel con mayor soporte empírico. De esta manera, cada modelo funcionará como un “experimento virtual” para responder preguntas relacionadas con la magnitud y extensión espacial de los efectos de distintas especies coexistentes, y extraer conclusiones sobre posibles implicaciones para el funcionamiento de comunidades y ecosistemas. Este trabajo sintetiza las técnicas de implementación de los MMV y los modelos de vecindad en ecología terrestre, resumiendo su uso hasta la fecha y destacando nuevas líneas de aplicación.

  2. Properties of Bipolar Fuzzy Hypergraphs

    OpenAIRE

    M. Akram; Dudek, W. A.; Sarwar, S.

    2013-01-01

    In this article, we apply the concept of bipolar fuzzy sets to hypergraphs and investigate some properties of bipolar fuzzy hypergraphs. We introduce the notion of $A-$ tempered bipolar fuzzy hypergraphs and present some of their properties. We also present application examples of bipolar fuzzy hypergraphs.

  3. Fuzzy Markov chains: uncertain probabilities

    OpenAIRE

    2002-01-01

    We consider finite Markov chains where there are uncertainties in some of the transition probabilities. These uncertainties are modeled by fuzzy numbers. Using a restricted fuzzy matrix multiplication we investigate the properties of regular, and absorbing, fuzzy Markov chains and show that the basic properties of these classical Markov chains generalize to fuzzy Markov chains.

  4. Achieving of Fuzzy Automata for Processing Fuzzy Logic

    Institute of Scientific and Technical Information of China (English)

    SHU Lan; WU Qing-e

    2005-01-01

    At present, there has been an increasing interest in neuron-fuzzy systems, the combinations of artificial neural networks with fuzzy logic. In this paper, a definition of fuzzy finite state automata (FFA) is introduced and fuzzy knowledge equivalence representations between neural networks, fuzzy systems and models of automata are discussed. Once the network has been trained, we develop a method to extract a representation of the FFA encoded in the recurrent neural network that recognizes the training rules.

  5. Entropy of Fuzzy Partitions and Entropy of Fuzzy Dynamical Systems

    Directory of Open Access Journals (Sweden)

    Dagmar Markechová

    2016-01-01

    Full Text Available In the paper we define three kinds of entropy of a fuzzy dynamical system using different entropies of fuzzy partitions. It is shown that different definitions of the entropy of fuzzy partitions lead to different notions of entropies of fuzzy dynamical systems. The relationships between these entropies are studied and connections with the classical case are mentioned as well. Finally, an analogy of the Kolmogorov–Sinai Theorem on generators is proved for fuzzy dynamical systems.

  6. Tutorial On Fuzzy Logic

    DEFF Research Database (Denmark)

    Jantzen, Jan

    1998-01-01

    A logic based on the two truth values True and False is sometimes inadequate when describing human reasoning. Fuzzy logic uses the whole interval between 0 (False) and 1 (True) to describe human reasoning. As a result, fuzzy logic is being applied in rule based automatic controllers, and this paper...

  7. Extended Fuzzy Clustering Algorithms

    NARCIS (Netherlands)

    U. Kaymak (Uzay); M. Setnes

    2000-01-01

    textabstractFuzzy clustering is a widely applied method for obtaining fuzzy models from data. It has been applied successfully in various fields including finance and marketing. Despite the successful applications, there are a number of issues that must be dealt with in practical applications of fuz

  8. Statistical Methods for Fuzzy Data

    CERN Document Server

    Viertl, Reinhard

    2011-01-01

    Statistical data are not always precise numbers, or vectors, or categories. Real data are frequently what is called fuzzy. Examples where this fuzziness is obvious are quality of life data, environmental, biological, medical, sociological and economics data. Also the results of measurements can be best described by using fuzzy numbers and fuzzy vectors respectively. Statistical analysis methods have to be adapted for the analysis of fuzzy data. In this book, the foundations of the description of fuzzy data are explained, including methods on how to obtain the characterizing function of fuzzy m

  9. Itervenção cognitivo-comportamental em violência sexual: estudo de caso Itervención de cognitivo-comportamental en un caso de violencia sexual Cognitive-behavior intervention with sexual violence: case report

    OpenAIRE

    Eliane Regina Lucânia; Nelson Iguimar Valério; Sueli Zocal Paro Barison; Maria Cristina de Oliveira Santos Miyazaki

    2009-01-01

    Violência sexual é um grave problema de saúde pública, pois atinge todas as classes sociais, etnias, religiões e culturas, em especial crianças e adolescentes do sexo feminino. O objetivo do presente estudo é relatar o impacto de uma intervenção cognitivo-comportamental em uma adolescente de 13 anos, vítima de tentativa de estupro. O processo, de 45 sessões, distribuídas em avaliação inicial, intervenção, avaliação final e follow-up, utilizou entrevista semidirigida, critérios diagnósticos do...

  10. Axiomatic of Fuzzy Complex Numbers

    OpenAIRE

    Angel Garrido

    2012-01-01

    Fuzzy numbers are fuzzy subsets of the set of real numbers satisfying some additional conditions. Fuzzy numbers allow us to model very difficult uncertainties in a very easy way. Arithmetic operations on fuzzy numbers have also been developed, and are based mainly on the crucial Extension Principle. When operating with fuzzy numbers, the results of our calculations strongly depend on the shape of the membership functions of these numbers. Logically, less regular membership functions may lead ...

  11. Modelo hipermedia creador (HC

    Directory of Open Access Journals (Sweden)

    Manuel Armenteros Gallardo

    2012-04-01

    Full Text Available El presente artículo expone las bases creativas del modelo Hipermedia Creador (HC, un modelo basado en la filosofía de los llamados tutores inteligentes. Tiene como objetivo la creación de una herramienta hipermedia que permita y facilite la producción creativa de proyectos hipermedias educativos con parámetros comunes a los usados en la fórmula del videojuego (entretenimiento. Se describe su estructura, y se analiza y explica la disposición creativa de sus elementos, entre los cuales sobresale las posibilidades pedagógicas del movimiento expresivo de la imagen.

  12. MODELING FUZZY GEOGRAPHIC OBJECTS WITHIN FUZZY FIELDS

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    To improve the current GIS functions in describing geographic objects w ith fuzziness,this paper begins with a discussion on the distance measure of sp atial objects based on the theory of sets and an introduction of dilation and er osion operators.Under the assumption that changes of attributes in a geographic region are gradual,the analytic expressions for the fuzzy objects of points,l ines and areas,and the description of their formal structures are presented.Th e analytic model of geographic objects by means of fuzzy fields is developed.We have shown that the 9-intersection model proposed by Egenhofer and Franzosa (19 91) is a special case of the model presented in the paper.

  13. Mapeamento comportamental: observação de crianças no parque da pré-escola

    Directory of Open Access Journals (Sweden)

    Luana dos Santos Raymundo

    2011-12-01

    Full Text Available O presente artigo tem por objetivo descrever a aplicação do mapeamento comportamental centrado no lugar no contexto de um parque escolar. Esta técnica característica da psicologia ambiental relaciona o comportamento investigado com o local onde ele ocorre. Participaram do estudo cerca de 65 crianças de 3 a 5 anos de uma instituição escolar. O planejamento envolveu a definição de 11 categorias comportamentais. Este artigo constitui um recorte dos resultados evidenciando a preferência por determinados setores do espaço pelas crianças. Discutimos a importância dos estudos observacionais de fácil codificação para serem vertidos em intervenções práticas na realidade pesquisada.

  14. Super Fuzzy Matrices and Super Fuzzy Models for Social Scientists

    CERN Document Server

    Kandasamy, W B Vasantha; Amal, K

    2008-01-01

    This book introduces the concept of fuzzy super matrices and operations on them. This book will be highly useful to social scientists who wish to work with multi-expert models. Super fuzzy models using Fuzzy Cognitive Maps, Fuzzy Relational Maps, Bidirectional Associative Memories and Fuzzy Associative Memories are defined here. The authors introduce 13 multi-expert models using the notion of fuzzy supermatrices. These models are described with illustrative examples. This book has three chapters. In the first chaper, the basic concepts about super matrices and fuzzy super matrices are recalled. Chapter two introduces the notion of fuzzy super matrices adn their properties. The final chapter introduces many super fuzzy multi expert models.

  15. El modelo europeo de calidad

    OpenAIRE

    Peya Gascons, Margarita

    2004-01-01

    LA FUNDACIÓN EUROPEA para la Gestión de la Calidad, creó el modelo europeo de calidad EFQM (European Foundation Management Quality) con la finalidad de promover que las empresas y organizaciones realizaran sus autoevaluaciones con el modelo de calidad que propone como referencia. El modelo EFQM tiene un doble...

  16. Fuzzy Dot Structure of BG-algebras

    Directory of Open Access Journals (Sweden)

    Tapan Senapati

    2014-09-01

    Full Text Available In this paper, the notions of fuzzy dot subalgebras is introduced together with fuzzy normal dot subalgebras and fuzzy dot ideals of BG-algebras. The homomorphic image and inverse image are investigated in fuzzy dot subalgebras and fuzzy dot ideals of BG-algebras. Also, the notion of fuzzy relations on the family of fuzzy dot subalgebras and fuzzy dot ideals of BG-algebras are introduced with some related properties.

  17. Structural Holes in Directed Fuzzy Social Networks

    OpenAIRE

    Renjie Hu; Guangyu Zhang

    2014-01-01

    The structural holes have been a key issue in fuzzy social network analysis. For undirected fuzzy social networks where edges are just present or absent undirected fuzzy relation and have no more information attached, many structural holes measures have been presented, such as key fuzzy structural holes, general fuzzy structural holes, strong fuzzy structural holes, and weak fuzzy structural holes. There has been a growing need to design structural holes measures for directed fuzzy social net...

  18. Modelos experimentales de anafilaxia

    Directory of Open Access Journals (Sweden)

    Yazmín Ravelo Calzado

    2009-01-01

    Full Text Available Los modelos experimentales constituyen una herramienta clave en la búsqueda de nuevas opciones para el tratamiento y profilaxis de diversas condiciones patológicas. La anafilaxia, síndrome clínico con manifestaciones multisistémicas como urticaria, asma, vasodilatación sistémica, hipotensión y shock, entre otras, no resulta una excepción. El objetivo del presente trabajo consistió en presentar algunos de los modelos experimentales utilizados en la evaluación de sustancias con potenciales efectos antianafilácticos, específicamente aquellos en los que la anafilaxia se produce como consecuencia de un mecanismo inmunológico mediado por inmunoglobulina E (IgE, que da lugar a la liberación de mediadores inflamatorios (histamina, prostaglandinas, leucotrienos, factor de activación plaquetario, tromboxano A2 a partir de mastocitos y basófilos. Para ello, se resumen diferentes modelos de anafilaxia experimentales in vivo e in vitro, y se agrupan según el método de inducción de anafilaxia, mostrando así, mecanismos moleculares comunes, pero también especificidades distintivas en cuanto a la especie utilizada, el tipo de antígeno que desencadena la reacción y su tipo (sistémica o local, entre otros aspectos. Se enfatiza la importancia de la adecuada selección de modelos experimentales que garanticen la mayor reproducibilidad y fiabilidad de los resultados, para lo cual se precisan algunos criterios para dicha selección, teniendo en mente que ningún modelo satisface todos los criterios involucrados en la etiopatogenia de una determinada patología.

  19. The Fuzzy Supersphere

    CERN Document Server

    Grosse, Harald; Grosse, Harald; Reiter, Gert

    1998-01-01

    We introduce the fuzzy supersphere as sequence of finite-dimensional, noncommutative $Z_{2}$-graded algebras tending in a suitable limit to a dense subalgebra of the $Z_{2}$-graded algebra of ${\\cal H}^{\\infty}$-functions on the $(2| 2)$-dimensional supersphere. Noncommutative analogues of the body map (to the (fuzzy) sphere) and the super-deRham complex are introduced. In particular we reproduce the equality of the super-deRham cohomology of the supersphere and the ordinary deRham cohomology of its body on the "fuzzy level".

  20. A fuzzy disaggregation technique

    Directory of Open Access Journals (Sweden)

    Alessandro Polli

    2013-05-01

    Full Text Available The aim of this paper is to analyze a problem of time series disaggregation in presence of broad information lack. In this framework it is not possible to follow standard methodologies, like those stemming from the Chow and Lin algorithm and based on probabilistic assumptions. In general terms, when information sets are limited, instead of referring to probabilistic measures it could be more appropriate to adopt an uncertainty measure satisfying only some general properties, like the fuzzy one. After a synthetic survey about fuzzy aggregation operators, we introduce a fuzzy disaggregation technique, based on Choquet capacity theory and characterized by De Finetti coherence.

  1. A Novel Weak Fuzzy Solution for Fuzzy Linear System

    Directory of Open Access Journals (Sweden)

    Soheil Salahshour

    2016-03-01

    Full Text Available This article proposes a novel weak fuzzy solution for the fuzzy linear system. As a matter of fact, we define the right-hand side column of the fuzzy linear system as a piecewise fuzzy function to overcome the related shortcoming, which exists in the previous findings. The strong point of this proposal is that the weak fuzzy solution is always a fuzzy number vector. Two complex and non-complex linear systems under uncertainty are tested to validate the effectiveness and correctness of the presented method.

  2. Fuzzy Modeling for Uncertainty Nonlinear Systems with Fuzzy Equations

    Directory of Open Access Journals (Sweden)

    Raheleh Jafari

    2017-01-01

    Full Text Available The uncertain nonlinear systems can be modeled with fuzzy equations by incorporating the fuzzy set theory. In this paper, the fuzzy equations are applied as the models for the uncertain nonlinear systems. The nonlinear modeling process is to find the coefficients of the fuzzy equations. We use the neural networks to approximate the coefficients of the fuzzy equations. The approximation theory for crisp models is extended into the fuzzy equation model. The upper bounds of the modeling errors are estimated. Numerical experiments along with comparisons demonstrate the excellent behavior of the proposed method.

  3. Axiomatic of Fuzzy Complex Numbers

    Directory of Open Access Journals (Sweden)

    Angel Garrido

    2012-04-01

    Full Text Available Fuzzy numbers are fuzzy subsets of the set of real numbers satisfying some additional conditions. Fuzzy numbers allow us to model very difficult uncertainties in a very easy way. Arithmetic operations on fuzzy numbers have also been developed, and are based mainly on the crucial Extension Principle. When operating with fuzzy numbers, the results of our calculations strongly depend on the shape of the membership functions of these numbers. Logically, less regular membership functions may lead to very complicated calculi. Moreover, fuzzy numbers with a simpler shape of membership functions often have more intuitive and more natural interpretations. But not only must we apply the concept and the use of fuzzy sets, and its particular case of fuzzy number, but also the new and interesting mathematical construct designed by Fuzzy Complex Numbers, which is much more than a correlate of Complex Numbers in Mathematical Analysis. The selected perspective attempts here that of advancing through axiomatic descriptions.

  4. Homomorphic Properties of Fuzzy Rough Groups

    Institute of Scientific and Technical Information of China (English)

    QIN Ke-yun; ZHANG Xiao-hua

    2012-01-01

    This paper is devoted to the discussion of homomorphic properties of fuzzy rough groups.The fuzzy approximation space was generated by fuzzy normal subgroups and the fuzzy rough approximation operators were discussed in the frame of fuzzy rough set model.The basic properties of fuzzy rough approximation operators were obtained.

  5. Some Results on Fuzzy Soft Topological Spaces

    Directory of Open Access Journals (Sweden)

    Cigdem Gunduz (Aras

    2013-01-01

    Full Text Available We introduce some important properties of fuzzy soft topological spaces. Furthermore, fuzzy soft continuous mapping, fuzzy soft open and fuzzy soft closed mappings, and fuzzy soft homeomorphism for fuzzy soft topological spaces are given and structural characteristics are discussed and studied.

  6. Fuzzy Rough Ring and Its Prop erties

    Institute of Scientific and Technical Information of China (English)

    REN Bi-jun; FU Yan-ling

    2013-01-01

    This paper is devoted to the theories of fuzzy rough ring and its properties. The fuzzy approximation space generated by fuzzy ideals and the fuzzy rough approximation operators were proposed in the frame of fuzzy rough set model. The basic properties of fuzzy rough approximation operators were analyzed and the consistency between approximation operators and the binary operation of ring was discussed.

  7. Some Weaker Forms of Fuzzy Faintly Open Mappings

    OpenAIRE

    Hakeem A. Othman

    2015-01-01

    This paper is devoted to introduce and investigate some weak forms of fuzzy open mappings, namely fuzzy faintly semi open (fuzzy faintly semi closed), fuzzy faintly preopen (fuzzy faintly preclosed), fuzzy faintly $\\alpha$-open (fuzzy faintly $\\alpha$-closed), fuzzy faintly semi preopen (fuzzy faintly semi preclosed) and fuzzy faintly $sp$- open (fuzzy faintly $sp$- closed) mappings and their fundamental properties are obtained. Moreover, their relationship with other types of fuzzy open (clo...

  8. Fuzzy Sets, Fuzzy S-Open and S-Closed Mappings

    OpenAIRE

    Ahmad, B; Athar Kharal

    2009-01-01

    Several properties of fuzzy semiclosure and fuzzy semi-interior of fuzzy sets defined by Yalvac (1988), have been established and supported by counterexamples. We also study the characterizations and properties of fuzzy semi-open and fuzzy semi-closed sets. Moreover, we define fuzzy s-open and fuzzy s-closed mappings and give some interesting characterizations.

  9. Extended Fuzzy Logic Programs with Fuzzy Answer Set Semantics

    Science.gov (United States)

    Saad, Emad

    This paper extends fuzzy logic programs [12, 24] to allow the explicit representation of classical negation as well as non-monotonic negation, by introducing the notion of extended fuzzy logic programs. We present the fuzzy answer set semantics for the extended fuzzy logic programs, which is based on the classical answer set semantics of classical extended logic programs [7]. We show that the proposed semantics is a natural extension to the classical answer set semantics of classical extended logic programs [7]. Furthermore, we define fixpoint semantics for extended fuzzy logic programs with and without non-monotonic negation, and study their relationship to the fuzzy answer set semantics. In addition, we show that the fuzzy answer set semantics is reduced to the stable fuzzy model semantics for normal fuzzy logic programs introduced in [42]. The importance of that is computational methods developed for normal fuzzy logic programs can be applied to the extended fuzzy logic programs. Moreover, we show that extended fuzzy logic programs can be intuitively used for representing and reasoning about actions in fuzzy environment.

  10. Fuzziness and Relevance Theory

    Institute of Scientific and Technical Information of China (English)

    Grace Qiao Zhang

    2005-01-01

    This paper investigates how the phenomenon of fuzzy language, such as `many' in `Mary has many friends', can be explained by Relevance Theory. It is concluded that fuzzy language use conforms with optimal relevance in that it can achieve the greatest positive effect with the least processing effort. It is the communicators themselves who decide whether or not optimal relevance is achieved, rather than the language form (fuzzy or non-fuzzy) used. People can skillfully adjust the deployment of different language forms or choose appropriate interpretations to suit different situations and communication needs. However, there are two challenges to RT: a. to extend its theory from individual relevance to group relevance; b. to embrace cultural considerations (because when relevance principles and cultural protocols are in conflict, the latter tends to prevail).

  11. Sobre multifunciones Fuzzy

    Directory of Open Access Journals (Sweden)

    Renato César Scarparo

    2002-01-01

    Full Text Available En este trabajo se presentan y demuestran algunos resultados de D.T. Luc y C, Vargas referentes a multifunciones con dominio y blanco en espacios vectoriales topológicos de Hausdorff sobre R, como así mismo se explícita el concepto de multifunción fuzzy de acuerdo a Papageogiou, y se demuestran dos teorema de S. S. Chag, con respecto a las multifunciones fuzzy, proposiciones todas estas, que integran una línea de resultados necesarios para la demostración de desigualdades variacionales para multifunciones fuzzy, a su vez necesarias, para la extensión fuzzy de conocido teorema de Walras.

  12. Fuzzy data analysis

    CERN Document Server

    Bandemer, Hans

    1992-01-01

    Fuzzy data such as marks, scores, verbal evaluations, imprecise observations, experts' opinions and grey tone pictures, are quite common. In Fuzzy Data Analysis the authors collect their recent results providing the reader with ideas, approaches and methods for processing such data when looking for sub-structures in knowledge bases for an evaluation of functional relationship, e.g. in order to specify diagnostic or control systems. The modelling presented uses ideas from fuzzy set theory and the suggested methods solve problems usually tackled by data analysis if the data are real numbers. Fuzzy Data Analysis is self-contained and is addressed to mathematicians oriented towards applications and to practitioners in any field of application who have some background in mathematics and statistics.

  13. Fuzzy stochastic multiobjective programming

    CERN Document Server

    Sakawa, Masatoshi; Katagiri, Hideki

    2011-01-01

    With a stress on interactive decision-making, this work breaks new ground by covering both the random nature of events related to environments, and the fuzziness of human judgements. The text runs from mathematical preliminaries to future research directions.

  14. Fuzziness in abacus logic

    Science.gov (United States)

    Malhas, Othman Qasim

    1993-10-01

    The concept of “abacus logic” has recently been developed by the author (Malhas, n.d.). In this paper the relation of abacus logic to the concept of fuzziness is explored. It is shown that if a certain “regularity” condition is met, concepts from fuzzy set theory arise naturally within abacus logics. In particular it is shown that every abacus logic then has a “pre-Zadeh orthocomplementation”. It is also shown that it is then possible to associate a fuzzy set with every proposition of abacus logic and that the collection of all such sets satisfies natural conditions expected in systems of fuzzy logic. Finally, the relevance to quantum mechanics is discussed.

  15. Dialectic operator fuzzy logic

    Institute of Scientific and Technical Information of China (English)

    程晓春; 姜云飞; 刘叙华

    1996-01-01

    Dialectic operator fuzzy logic (DOFL) is presented which is relevant,paraconsistent and nonmonotonic.DOFL can vividly describe the belief revision in the cognitive process and can infer reasonably well while the knowledge is inconsistent,imprecise or incomplete.

  16. On Fuzzy Regular-I-Closed Sets, Fuzzy Semi-I-Regular Sets, Fuzzy ABI-Sets and Decompositions of Fuzzy Regular-I-Continuity, Fuzzy AI - Continuity

    OpenAIRE

    Yildiz, Cemil; ABBAS, Fadhil

    2011-01-01

     The concepts of fuzzy regular-I-closed set and fuzzy semi-I-regular set in fuzzy ideal topological spaces are investigated and some of their properties are obtained. Key words: Topological, Spaces, Fuzzy, Regular, Sets

  17. Fuzzy forecasting based on fuzzy-trend logical relationship groups.

    Science.gov (United States)

    Chen, Shyi-Ming; Wang, Nai-Yi

    2010-10-01

    In this paper, we present a new method to predict the Taiwan Stock Exchange Capitalization Weighted Stock Index (TAIEX) based on fuzzy-trend logical relationship groups (FTLRGs). The proposed method divides fuzzy logical relationships into FTLRGs based on the trend of adjacent fuzzy sets appearing in the antecedents of fuzzy logical relationships. First, we apply an automatic clustering algorithm to cluster the historical data into intervals of different lengths. Then, we define fuzzy sets based on these intervals of different lengths. Then, the historical data are fuzzified into fuzzy sets to derive fuzzy logical relationships. Then, we divide the fuzzy logical relationships into FTLRGs for forecasting the TAIEX. Moreover, we also apply the proposed method to forecast the enrollments and the inventory demand, respectively. The experimental results show that the proposed method gets higher average forecasting accuracy rates than the existing methods.

  18. Perspetiva imersa e distanciada ao longo da reestruturação cognitiva de crenças desadaptativas: estudo de caso em Terapia Cognitivo – Comportamental

    OpenAIRE

    Sousa Lopes, Patrícia Marlene

    2015-01-01

    O objetivo do presente estudo é analisar a relação entre estas diferentes perspetivas e a técnica de reestruturação cognitiva. Foi formulada uma hipótese com o intuito de verificar se pessoas deprimidas em Terapia Cognitivo – Comportamental aumentam a capacidade de distanciamento ao longo do processo terapêutico à medida que ocorre a Reestruturação Cognitiva.

  19. Modelos de engajamento

    Directory of Open Access Journals (Sweden)

    Roberval de Jesus Leone dos Santos

    2005-08-01

    Full Text Available O artigo apresenta três modelos de engajamento propostos por autores fundamentais do século XX: Gramsci, Sartre e Camus. Após a revisão dos modelos, o autor desenvolve uma abordagem generalizada do fenômeno e apresenta duas conclusões principais: o engajamento tem de ser entendido em termos de grau; o engajamento é um fenômeno exclusivo de sociedades políticas ou antagônicas.The paper presents three models of engagement proposed by fundamental authors of the 20th century: Gramsci, Sartre and Camus. After the revision of the models, the author develops a generalized approach of the phenomenon and it presents two main conclusions: the engagement must be understood within limits of degree; the engagement is a phenomenon exclusive of political or antagonistic societies.

  20. Un nuevo modelo urbano

    OpenAIRE

    Duque Escobar, Gonzalo

    2012-01-01

    Urge un nuevo modelo de ciudad para para resolver la integración, abordando temas sustantivos como: el agua, las cuencas, la inversión, los servicios públicos, y la movilidad, además de la vocación de los entes territoriales y de la ciudad región como elementos clave para decidir sobre la asignación de las funciones metropolitanas y usos del suelo en el Eje Perera-Manizales

  1. Modelo interrelacionado de decisiones

    Directory of Open Access Journals (Sweden)

    Edwin Haramoto Nishikimoto

    2002-01-01

    Full Text Available Propone la implementación de un sistema interrelacionado de decisiones que permita superar los problemas que enfrentan los agentes que participan en las áreas de trabajo involucradas en la acción habitacional. Para estos describe cuatro modelos (habitacional, de decisión, de información y de alternativas habitacionales que permiten ordenar, relacionar, agrupar y jerarquizar todos los componentes del proceso habitacional

  2. Fuzzy variable linear programming with fuzzy technical coefficients

    Directory of Open Access Journals (Sweden)

    Sanwar Uddin Ahmad

    2012-11-01

    Full Text Available Normal 0 false false false EN-US X-NONE X-NONE Fuzzy linear programming is an application of fuzzy set theory in linear decision making problems and most of these problems are related to linear programming with fuzzy variables. In this paper an approximate but convenient method for solving these problems with fuzzy non-negative technical coefficient and without using the ranking functions, is proposed. With the help of numerical examples, the method is illustrated.

  3. Intenção comportamental de agricultores do Oeste de Santa Catarina para a conservação de florestas nativas

    Directory of Open Access Journals (Sweden)

    Elaine Zuchiwschi

    2015-03-01

    Full Text Available ResumoConciliar a conservação de florestas nativas e a produção agropecuária em estabelecimentos rurais é uma tarefa complexa que demanda abordagens sistêmicas e multidisciplinares que incluam, além de aspectos biológicos dos recursos, outros de natureza socioeconômica, cultural e mesmo psicológica. Para identificar e comparar a intenção comportamental de agricultores da região Oeste de Santa Catarina para a conservação e manejo de florestas nativas em seus imóveis rurais, foi utilizada neste trabalho a Teoria do Comportamento Planejado. Verificou-se que a Intenção Comportamental de agricultores de diferentes sistemas de produção e de agricultores com e sem dependência por recursos florestais nativos para compor a renda, diferem. Diferenças entre grupos de agricultores em relação aos resultados da Atitude e do Controle Comportamental Percebido estavam associadas de forma coerente com aspectos socioeconômicos e ambientais. Os resultados das Normas Subjetivas indicam que a família é a principal referência dos agricultores, exercendo pressão positiva para a conservação florestal.

  4. Intuitionistic fuzzy alpha-continuity and intuitionistic fuzzy precontinuity

    Directory of Open Access Journals (Sweden)

    Joung Kon Jeon

    2005-01-01

    Full Text Available A characterization of intuitionistic fuzzy α-open set is given, and conditions for an IFS to be an intuitionistic fuzzy α-open set are provided. Characterizations of intuitionistic fuzzy precontinuous (resp., α-continuous mappings are given.

  5. On fuzzy points in semigroups

    Directory of Open Access Journals (Sweden)

    Kyung Ho Kim

    2001-01-01

    Full Text Available We consider the semigroup S¯ of the fuzzy points of a semigroup S, and discuss the relation between the fuzzy interior ideals and the subsets of S¯ in an (intra-regular semigroup S.

  6. Papéis do sistema colinérgico e da fosfoproteína hipocampal de 86 KDa (p86) em déficits de memória espacial em modelo experimental da síndrome de Wernicke-Korsakff

    OpenAIRE

    Rita Gomes Wanderley Pires

    2006-01-01

    PAPÉIS DO SISTEMA COLINÉRGICO E DA FOSFOPROTEÍNA HIPOCAMPAL DE 86 kD (p86) EM DÉFICITS DE MEMÓRIA ESPACIAL EM MODELO EXPERIMENTAL DA SÍNDROME DE WERNICKE-KORSAKOFF. Pires, R. G. W. Departamento de Bioquímica-Imunologia, ICB, UFMG, Belo Horizonte, Minas Gerais. Os objetivos do presente trabalho foram estudar, a nível bioquímico, morfológico e comportamental, os efeitos do tratamento crônico com etanol associado ou não à deficiência de tiamina em ratos. Realizamos esse trabalho em ...

  7. Shapley's value for fuzzy games

    Directory of Open Access Journals (Sweden)

    Raúl Alvarado Sibaja

    2009-02-01

    Full Text Available This is the continuation of a previous article titled "Fuzzy Games", where I defined a new type of games based on the Multilinear extensions f, of characteristic functions and most of standard theorems for cooperative games also hold for this new type of games: The fuzzy games. Now we give some other properties and the extension of the definition of Shapley¨s Value for Fuzzy Games Keywords: game theory, fuzzy sets, multiattribute decisions.

  8. Compactness theorems of fuzzy semantics

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    The relationship among diverse fuzzy semantics vs. the corresponding logic consequence operators has been analyzed systematically. The results that compactness and logical compactness of fuzzy semantics are equivalent to compactness and continuity of the logic consequence operator induced by the semantics respectively have been proved under certain conditions. A general compactness theorem of fuzzy semantics have been established which says that every fuzzy semantics defined on a free algebra with members corresponding to continuous functions is compact.

  9. Fuzzy Group Ideals and Rings

    Directory of Open Access Journals (Sweden)

    Kharatti Lal

    2015-12-01

    Full Text Available This section define a level subring or level ideals obtain a set of necessary and sufficient condition for the equality of two ideals and characterizes field in terms of its fuzzy ideals. It also presents a procedure to construct a fuzzy subrings (fuzzy ideals from any given ascending chain of subring ideal. We prove that the lattice of fuzzy congruence of group G (respectively ring R is isomorphic to the lattice of fuzzy normal subgroup of G (respectively fuzzy ideals of R.In Yuan Boond Wu wangrning investigated the relationship between the fuzzy ideals and the fuzzy congruences on a distributive lattice and obtained that the lattice of fuzzy ideals is isomorphic to the lattice of fuzzy congruences on a generalized Boolean algebra. Fuzzy group theory can be used to describe, symmetries and permutation in nature and mathematics. The fuzzy group is one of the oldest branches of abstract algebra. For example group can be used is classify to all of the forms chemical crystal can take. Group can be used to count the number of non-equivalent objects and permutation or symmetries. For example, the number of different is switching functions of n, variable when permutation of the input are allowed. Beside crystallography and combinatory group have application of quantum mechanics.

  10. Possibility Intuitionistic Fuzzy Soft Set

    Directory of Open Access Journals (Sweden)

    Maruah Bashir

    2012-01-01

    Full Text Available Possibility intuitionistic fuzzy soft set and its operations are introduced, and a few of their properties are studied. An application of possibility intuitionistic fuzzy soft sets in decision making is investigated. A similarity measure of two possibility intuitionistic fuzzy soft sets has been discussed. An application of this similarity measure in medical diagnosis has been shown.

  11. Fuzzy Soft Compact Topological Spaces

    Directory of Open Access Journals (Sweden)

    Seema Mishra

    2016-01-01

    Full Text Available In this paper, we have studied compactness in fuzzy soft topological spaces which is a generalization of the corresponding concept by R. Lowen in the case of fuzzy topological spaces. Several basic desirable results have been established. In particular, we have proved the counterparts of Alexander’s subbase lemma and Tychonoff theorem for fuzzy soft topological spaces.

  12. Two-Point Fuzzy Ostrowski Type Inequalities

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    Muhammad Amer Latif

    2013-08-01

    Full Text Available Two-point fuzzy Ostrowski type inequalities are proved for fuzzy Hölder and fuzzy differentiable functions. The two-point fuzzy Ostrowski type inequality for M-lipshitzian mappings is also obtained. It is proved that only the two-point fuzzy Ostrowski type inequality for M-lipshitzian mappings is sharp and as a consequence generalize the two-point fuzzy Ostrowski type inequalities obtained for fuzzy differentiable functions.

  13. Bifundamental Fuzzy 2-Sphere and Fuzzy Killing Spinors

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    Horatiu Nastase

    2010-07-01

    Full Text Available We review our construction of a bifundamental version of the fuzzy 2-sphere and its relation to fuzzy Killing spinors, first obtained in the context of the ABJM membrane model. This is shown to be completely equivalent to the usual (adjoint fuzzy sphere. We discuss the mathematical details of the bifundamental fuzzy sphere and its field theory expansion in a model-independent way. We also examine how this new formulation affects the twisting of the fields, when comparing the field theory on the fuzzy sphere background with the compactification of the 'deconstructed' (higher dimensional field theory.

  14. Nursing and fuzzy logic: an integrative review Enfermería y lógica fuzzy: una revisión de integradora Enfermagem e lógica fuzzy: uma revisão integrativa

    Directory of Open Access Journals (Sweden)

    Rodrigo Jensen

    2011-02-01

    Full Text Available This study conducted an integrative review investigating how fuzzy logic has been used in research with the participation of nurses. The article search was carried out in the CINAHL, EMBASE, SCOPUS, PubMed and Medline databases, with no limitation on time of publication. Articles written in Portuguese, English and Spanish with themes related to nursing and fuzzy logic with the authorship or participation of nurses were included. The final sample included 21 articles from eight countries. For the purpose of analysis, the articles were distributed into categories: theory, method and model. In nursing, fuzzy logic has significantly contributed to the understanding of subjects related to: imprecision or the need of an expert; as a research method; and in the development of models or decision support systems and hard technologies. The use of fuzzy logic in nursing has shown great potential and represents a vast field for research.Este estudio tuvo como objetivo realizar una revisión integradora investigando como la lógica fuzzy ha sido utilizada en investigaciones con participación de enfermeros. La búsqueda de los artículos fue realizada en las bases de datos CINAHL, Embase, SCOPUS, Medline y PubMed, sin especificar un intervalo de años determinado. Fueron incluidos artículos en los idiomas: portugués, inglés y castellano; con una temática relacionada a la enfermería y a la lógica fuzzy; y con autoría o participación de enfermeros. La muestra final fue de 21 artículos, de ocho países. Para el análisis, los artículos fueron distribuidos en las categorías: teoría, método y modelo. En la enfermería, la lógica fuzzy ha contribuido significativamente para la comprensión de temas relativos a la imprecisión o a la necesidad del especialista, como método de investigación y en el desarrollo de modelos o sistemas de apoyo a la decisión y de tecnologías duras. El uso de la lógica fuzzy en la enfermería ha demostrado gran

  15. A abordagem Cognitivo-Comportamental dos sonhos de alcoolistas El abordage Cognitivo-Comportamental de los sueños de alcoholicos Dreams of alcoholics according to Cognitive-Behavioural therapy

    Directory of Open Access Journals (Sweden)

    Renata Brasil Araujo

    2004-04-01

    Full Text Available Este trabalho tem por objetivo realizar uma revisão teórica a respeito do sono e dos sonhos de alcoolistas de acordo com a Terapia Cognitivo-Comportamental, aprofundando aspectos cognitivos e neurológicos. Na medida em que esta é a abordagem psicoterápica mais indicada para dependência química, os sonhos, utilizados na Terapia Psicanalítica, tiveram de ser estudados sob o enfoque cognitivo-comportamental, para que pudessem ser aproveitados na clínica com estes pacientes. As alterações no sono de alcoolistas, por exemplo, pode servir como alerta quanto a um risco de recaída, o que indica que a avaliação do sono não pode ser desconsiderada pelos profissionais, durante o tratamento destes pacientes. O relato dos sonhos, por sua vez, pode ser um instrumento terapêutico muito valioso por oferecer pistas a respeito do quanto o craving está presente naqueles que estão tentando manter-se em abstinência. Se os profissionais forem bem sucedidos quanto à identificação precoce de uma situação de risco como o craving, poderão ser mais efetivos quanto à prevenção da recaída. Conclui-se quanto à necessidade de que sejam feitas novas pesquisas a respeito dos sonhos de acordo com esta abordagem teórica, bem como avaliada a sua aplicação na área da dependência química.Este trabajo tiene como objetivo realizar uma revisión teórica a respecto del sueño y de los sueños de alcohólicos, teniendo en vista la Terapia Cognitivo-Comportamental, profundizando aspectos cognitivos y neurológicos. Em la medida en que éste es el abordaje psicoterápico más indicado para dependencia química, los sueños, utilizados en la Terapia psicoanalítica, tuvieron que ser estudiados sobre el enfoque cognitivo-comportamental, para que pudieran ser aprovechados en la clínica con estos pacientes. Las alteraciones em el sueño de los alcohólicos, por exemplo, pueden servir como alerta para el riesgo de recaída, lo que indica que una evaluaci

  16. Itervenção cognitivo-comportamental em violência sexual: estudo de caso Itervención de cognitivo-comportamental en un caso de violencia sexual Cognitive-behavior intervention with sexual violence: case report

    Directory of Open Access Journals (Sweden)

    Eliane Regina Lucânia

    2009-12-01

    Full Text Available Violência sexual é um grave problema de saúde pública, pois atinge todas as classes sociais, etnias, religiões e culturas, em especial crianças e adolescentes do sexo feminino. O objetivo do presente estudo é relatar o impacto de uma intervenção cognitivo-comportamental em uma adolescente de 13 anos, vítima de tentativa de estupro. O processo, de 45 sessões, distribuídas em avaliação inicial, intervenção, avaliação final e follow-up, utilizou entrevista semidirigida, critérios diagnósticos do DSM-IV, o Inventário de Depressão para Crianças (CDI, técnicas cognitivo-comportamentais e orientações à mãe. Na avaliação inicial verificaram-se dificuldades escolares, problemas comportamentais, sintomas indicativos de estresse pós-traumático e sintomas moderados de depressão, intensificados pelo episódio da violência. Observaram-se também repetições de padrões transgeracionais: comportamento promíscuo, etilismo, violência sexual e instabilidade nos relacionamentos. Os resultados demonstraram redução das queixas iniciais, aquisição de novo repertório comportamental, melhor funcionamento psicossocial e impacto positivo da intervenção. Os dados indicam necessidade de inclusão dos familiares no processo.La violencia sexual es un problema grave de la salud pública: alcanza todas las clases sociales etnias, religiones y culturas, en especial niños y adolescentes del sexo feminino. El objetivo del actual estudio es decir el impacto de la intervención cognitivo-comportamental en una adolescente de 13 años, víctima de un intento de violación. El proceso, de 45 sesiones, distribuido en la evaluación inicial, intervención, evaluación final y acompanãmiento, entrevista semidirigida, criterios diagnósticos del DSM-IV, inventario de depresión para los niños (CDI, técnicas cognitivo-comportamentales y orientación con la madre. En la primera entrevista fueron diagnosticadas dificultades en la escuela

  17. Multiple Fuzzy Classification Systems

    CERN Document Server

    Scherer, Rafał

    2012-01-01

    Fuzzy classifiers are important tools in exploratory data analysis, which is a vital set of methods used in various engineering, scientific and business applications. Fuzzy classifiers use fuzzy rules and do not require assumptions common to statistical classification. Rough set theory is useful when data sets are incomplete. It defines a formal approximation of crisp sets by providing the lower and the upper approximation of the original set. Systems based on rough sets have natural ability to work on such data and incomplete vectors do not have to be preprocessed before classification. To achieve better performance than existing machine learning systems, fuzzy classifiers and rough sets can be combined in ensembles. Such ensembles consist of a finite set of learning models, usually weak learners. The present book discusses the three aforementioned fields – fuzzy systems, rough sets and ensemble techniques. As the trained ensemble should represent a single hypothesis, a lot of attention is placed o...

  18. Possibilistic Exponential Fuzzy Clustering

    Institute of Scientific and Technical Information of China (English)

    Kiatichai Treerattanapitak; Chuleerat Jaruskulchai

    2013-01-01

    Generally,abnormal points (noise and outliers) cause cluster analysis to produce low accuracy especially in fuzzy clustering.These data not only stay in clusters but also deviate the centroids from their true positions.Traditional fuzzy clustering like Fuzzy C-Means (FCM) always assigns data to all clusters which is not reasonable in some circumstances.By reformulating objective function in exponential equation,the algorithm aggressively selects data into the clusters.However noisy data and outliers cannot be properly handled by clustering process therefore they are forced to be included in a cluster because of a general probabilistic constraint that the sum of the membership degrees across all clusters is one.In order to improve this weakness,possibilistic approach relaxes this condition to improve membership assignment.Nevertheless,possibilistic clustering algorithms generally suffer from coincident clusters because their membership equations ignore the distance to other clusters.Although there are some possibilistic clustering approaches that do not generate coincident clusters,most of them require the right combination of multiple parameters for the algorithms to work.In this paper,we theoretically study Possibilistic Exponential Fuzzy Clustering (PXFCM) that integrates possibilistic approach with exponential fuzzy clustering.PXFCM has only one parameter and not only partitions the data but also filters noisy data or detects them as outliers.The comprehensive experiments show that PXFCM produces high accuracy in both clustering results and outlier detection without generating coincident problems.

  19. A comparative analysis between fuzzy topsis and simplified fuzzy topsis

    Science.gov (United States)

    Ahmad, Sharifah Aniza Sayed; Mohamad, Daud

    2017-08-01

    Fuzzy Multiple Criteria Decision Making plays an important role in solving problems in decision making under fuzzy environment. Among the popular methods used is the fuzzy TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) where the solution is based on the shortest distance from its positive ideal solution and the farthest distance from its negative ideal solution. The fuzzy TOPSIS method was first introduced by Chen (2000). At present, there are several variants of fuzzy TOPSIS methods and each of them claimed to have its own advantages. In this paper, a comparative analysis is made between the classical fuzzy TOPSIS method proposed by Chen in 2000 and the simplified fuzzy TOPSIS proposed by Sodhi in 2012. The purpose of this study is to show the similarities and the differences between these two methods and also elaborate on their strengths and limitations as well. A comparison is also made by providing numerical examples of both methods.

  20. A neural fuzzy controller learning by fuzzy error propagation

    Science.gov (United States)

    Nauck, Detlef; Kruse, Rudolf

    1992-01-01

    In this paper, we describe a procedure to integrate techniques for the adaptation of membership functions in a linguistic variable based fuzzy control environment by using neural network learning principles. This is an extension to our work. We solve this problem by defining a fuzzy error that is propagated back through the architecture of our fuzzy controller. According to this fuzzy error and the strength of its antecedent each fuzzy rule determines its amount of error. Depending on the current state of the controlled system and the control action derived from the conclusion, each rule tunes the membership functions of its antecedent and its conclusion. By this we get an unsupervised learning technique that enables a fuzzy controller to adapt to a control task by knowing just about the global state and the fuzzy error.

  1. -Fuzzy Ideals in Ordered Semigroups

    Directory of Open Access Journals (Sweden)

    Asghar Khan

    2009-01-01

    Full Text Available We introduce the concept of 𝒩-fuzzy left (right ideals in ordered semigroups and characterize ordered semigroups in terms of 𝒩-fuzzy left (right ideals. We characterize left regular (right regular and left simple (right simple ordered semigroups in terms of 𝒩-fuzzy left (𝒩-fuzzy right ideals. The semilattice of left (right simple semigroups in terms of 𝒩-fuzzy left (right ideals is discussed.

  2. Tuning of Fuzzy PID Controllers

    DEFF Research Database (Denmark)

    Jantzen, Jan

    1998-01-01

    Since fuzzy controllers are nonlinear, it is more difficult to set the controller gains compared to proportional-integral-derivative (PID) controllers. This research paper proposes a design procedure and a tuning procedure that carries tuning rules from the PID domain over to fuzzy single......-loop controllers. The idea is to start with a tuned, conventional PID controller, replace it with an equivalent linear fuzzy controller, make the fuzzy controller nonlinear, and eventually fine-tune the nonlinear fuzzy controller. This is relevant whenever a PID controller is possible or already implemented....

  3. The foundations of fuzzy control

    CERN Document Server

    Lewis, Harold W

    1997-01-01

    Harold Lewis applied a cross-disciplinary approach in his highly accessible discussion of fuzzy control concepts. With the aid of fifty-seven illustrations, he thoroughly presents a unique mathematical formalism to explain the workings of the fuzzy inference engine and a novel test plant used in the research. Additionally, the text posits a new viewpoint on why fuzzy control is more popular in some countries than in others. A direct and original view of Japanese thinking on fuzzy control methods, based on the author's personal knowledge of - and association with - Japanese fuzzy research, is also included.

  4. Fuzzy Multiresolution Neural Networks

    Science.gov (United States)

    Ying, Li; Qigang, Shang; Na, Lei

    A fuzzy multi-resolution neural network (FMRANN) based on particle swarm algorithm is proposed to approximate arbitrary nonlinear function. The active function of the FMRANN consists of not only the wavelet functions, but also the scaling functions, whose translation parameters and dilation parameters are adjustable. A set of fuzzy rules are involved in the FMRANN. Each rule either corresponding to a subset consists of scaling functions, or corresponding to a sub-wavelet neural network consists of wavelets with same dilation parameters. Incorporating the time-frequency localization and multi-resolution properties of wavelets with the ability of self-learning of fuzzy neural network, the approximation ability of FMRANN can be remarkable improved. A particle swarm algorithm is adopted to learn the translation and dilation parameters of the wavelets and adjusting the shape of membership functions. Simulation examples are presented to validate the effectiveness of FMRANN.

  5. WHY FUZZY QUALITY?

    Directory of Open Access Journals (Sweden)

    Abbas Parchami

    2016-09-01

    Full Text Available Such as other statistical problems, we may confront with uncertain and fuzzy concepts in quality control. One particular case in process capability analysis is a situation in which specification limits are two fuzzy sets. In such a uncertain and vague environment, the produced product is not qualified with a two-valued Boolean view, but to some degree depending on the decision-maker strictness and the quality level of the produced product. This matter can be cause to a rational decision-making on the quality of the production line. First, a comprehensive approach is presented in this paper for modeling the fuzzy quality concept. Then, motivations and advantages of applying this flexible approach instead of using classical quality are mentioned.

  6. El modelo de generaciones traslapadas como modelo monetario

    Directory of Open Access Journals (Sweden)

    Monsalve G. Sergio

    1997-12-01

    Full Text Available En este artículo se presenta el modelo básico de generaciones translapadas de intercambio puroy se introduce el modelo OLG monetario. Se examinan la condiciones que garantizan la existencia de equilibrios bajo expectativas racionales y sus características de optimalidad, y se describen las tendencias actuales en la literatura reciente sobre los desarrollos del modelo OLG cómo modelo monetario.This article introduces the basic overlapping generations model (OLG of pure exchange and the OLG model with fiat money. It examines conditions under what rational expectations equilibria do exist, and studies the properties of optimality of those equilibria. Furthermore, it describes the recent tendencies in the economic literature about the developments of the OLG model as a monetary modelo.

  7. Temperamento e Caráter na Resposta à Terapia Cognitivo-Comportamental para Transtorno de Pânico

    Directory of Open Access Journals (Sweden)

    Débora Cassiane Finkler

    Full Text Available RESUMO O estudo investigou o impacto das características de temperamento e caráter na resposta à terapia cognitivo-comportamental (TCC para pacientes com transtorno de pânico (TP. Um total de 55 pacientes realizou 12 sessões de TCC em grupo (TCCG. A gravidade dos sintomas foi verificada antes e após a intervenção, e o Inventário de Temperamento e Caráter de Cloninger foi aplicado no início do tratamento. Observou-se uma redução significativa na gravidade do TP após a intervenção. Análises de regressão indicaram que as características de temperamento (persistência e caráter (autodirecionamento e cooperatividade não se mostraram significativamente relacionadas à melhora da agorafobia e de sintomas depressivos, permanecendo a gravidade inicial desses sintomas como fatores independentes de resposta à TCCG.

  8. Aproximación epistemológica de la conciencia en psicología: una perspectiva comportamental

    Directory of Open Access Journals (Sweden)

    Edgar Salgado-García

    2003-01-01

    Full Text Available Este ensayo presenta un panorama general acerca del estudio de la consciencia y de cómo podría conceptualizarse desde una perspectiva conductual. Se discuten las principales contribuciones del análisis experimental de la conducta y se comparan con las de los más importantes enfoques teóricos sobre la consciencia. Los primeros apartados se centran en los aspectos teóricos y empíricos relacionados con el concepto de consciencia. Los siguientes apartados versan sobre una epistemología conductual en medio de las perspectivas fenomenológica, cognoscitiva y biológica, así como algunos desarrollos en el campo del análisis de la conducta (p. ej., conducta verbal, conducta gobernada por reglas y control del estímulo, que se constituyen en alternativas a los recuentos mentalistas. Se concluye que la consciencia, desde una perspectiva comportamental, debe entenderse como conducta consciente y no como un concepto para explicar el comportamiento en sí.

  9. TERAPIA COMPORTAMENTAL PARA INCONTINÊNCIA URINÁRIA DA MULHER IDOSA: UMA AÇÃO DO ENFERMEIRO

    Directory of Open Access Journals (Sweden)

    Célia Pereira Caldas

    2010-01-01

    Full Text Available El objetivo de este estudio fue evaluar la experiencia de la aplicación de la terapia comportamiental para la incontinencia urinaria como una estrategia para mejorar el control de la vejiga y la calidad de vida de las mujeres de edad avanzada. Los datos fueron recogidos de las historias clínicas de 12 mujeres que fueron diagnosticados con incontinencia mixta o de estrés y se presentan de manera descriptiva. Tres pacientes presentaron disminución de la frecuencia y seis pacientes a cero pérdidas. Ocho pacientes informaron de que los ejercicios perineales formaban la parte de la terapia que más las ha ayudado. Seis pacientes reportaron que la terapia comportamental mejora de la autoestima y el autocuidado. Seis pacientes reportaron que la terapia le ayudó a hacer frente al problema. Se concluye que este procedimiento debe ser valorado como una acción de enfermería para la práctica clínica debido a su eficacia observada.

  10. Evidências científicas das neurociências para a terapia cognitivo-comportamental

    Directory of Open Access Journals (Sweden)

    Patrícia Porto

    2008-12-01

    Full Text Available Os transtornos de ansiedade estão envolvidos com a incapacidade de controlar o medo e a dificuldade em regular emoções negativas. A terapia cognitivo-comportamental (TCC abrange técnicas que permitem tanto a extinção do medo condicionado quanto a regulação cognitiva de emoções. Este artigo tem como objetivo apresentar resultados de estudos de regulação da emoção que podem ilustrar a associação e colaboração entre a TCC e as neurociências. Amparado nas pesquisas de regulação da emoção, este estudo corrobora os resultados dos ensaios clínicos com TCC revelando que as intervenções de distração, reestruturação cognitiva e exposição são eficazes para a regulação emocional.

  11. (L,M-Fuzzy σ-Algebras

    Directory of Open Access Journals (Sweden)

    Fu-Gui Shi

    2010-01-01

    Full Text Available The notion of (L,M-fuzzy σ-algebras is introduced in the lattice value fuzzy set theory. It is a generalization of Klement's fuzzy σ-algebras. In our definition of (L,M-fuzzy σ-algebras, each L-fuzzy subset can be regarded as an L-measurable set to some degree.

  12. Fuzzy Supervisory Control

    DEFF Research Database (Denmark)

    Jantzen, Jan

    1998-01-01

    Control problems in the process industry are dominated by non-linear and time-varying behaviour, many inner loops, and much interaction between the control loops. Fuzzy controllers have in some cases nevertheless mimicked the control actions of a human operator. For high level control and supervi......Control problems in the process industry are dominated by non-linear and time-varying behaviour, many inner loops, and much interaction between the control loops. Fuzzy controllers have in some cases nevertheless mimicked the control actions of a human operator. For high level control...

  13. Fuzzy OPF incorporating UPFC

    Energy Technology Data Exchange (ETDEWEB)

    Venkatesh, B.; George, M.K. [Multimedia University (Malaysia). Faculty of Engineering and Technology; Gooi, H.B. [Nanyang Technological University (Singapore). School of Electrical and Electronics Engineering

    2004-09-01

    A new optimal reactive power flow (ORPF) method is proposed which considers the inclusion of unified powerflow controllers (UPFC). The modelling and inclusion of UPFC in the solution of power flow equations is presented. The ORPF problem is formulated as a fuzzy optimisation problem considering the objectives of minimising system transmission loss and obtaining the best voltage profile. The fuzzy formulation of the ORPF problem is solved using an EP algorithm. The proposed method is applied on the 6-bus and 57-bus IEEE test systems and on a 191-bus Indian electric power system. The results demonstrate the applicability of the method. (author)

  14. Fuzzy CP2

    CERN Document Server

    Alexanian, G G; Immirzi, G; Ydri, B

    2001-01-01

    Regularization of quantum field theories (QFT's) can be achieved by quantizing the underlying manifold (spacetime or spatial slice) thereby replacing it by a non-commutative matrix model or a ``fuzzy manifold''. Such discretization by quantization is remarkably successful in preserving symmetries and topological features, and altogether overcoming the fermion-doubling problem. In this paper, we report on our work on the ``fuzzification'' of the four-dimensional CP2 and its QFT's. CP2 is not spin, but spin${}_c$. Its Dirac operator has many unique features. They are explained and their fuzzy versions are described.

  15. Fuzzy Topological Systems

    CERN Document Server

    Syropoulos, Apostolos

    2011-01-01

    Dialectica categories are a very versatile categorical model of linear logic. These have been used to model many seemingly different things (e.g., Petri nets and Lambek's calculus). In this note, we expand our previous work on fuzzy petri nets to deal with fuzzy topological systems. One basic idea is to use as the dualizing object in the Dialectica categories construction, the unit real interval [0,1], which has all the properties of a {\\em lineale}. The second basic idea is to generalize Vickers's notion of a topological system.

  16. A Fuzzy Commitment Scheme

    CERN Document Server

    Al-saggaf, Alawi A

    2008-01-01

    This paper attempt has been made to explain a fuzzy commitment scheme. In the conventional Commitment schemes, both committed string m and valid opening key are required to enable the sender to prove the commitment. However there could be many instances where the transmission involves noise or minor errors arising purely because of the factors over which neither the sender nor the receiver have any control. The fuzzy commitment scheme presented in this paper is to accept the opening key that is close to the original one in suitable distance metric, but not necessarily identical. The concept itself is illustrated with the help of simple situation.

  17. Modelo de galaxia disco

    Science.gov (United States)

    Ledesma, M.; Mosconi, M.

    El objetivo de este trabajo es estudiar la formación de galaxias anillo, a través de simulaciones numéricas. En el estudio numérico es necesario construir el modelo de una galaxia disco normal, en condición de equilibrio estable, que se ajuste a los parámetros observacionales disponibles de estos objetos. En dicho modelo se considera la galaxia constituída por un halo de materia oscura, un bulge y el disco propiamente dicho. A partir de perfiles de densidad obtenidos de las observaciones, se lleva a cabo la distribución espacial de las partículas, a través del ``Método del rechazo". La asignación de velocidades se realiza considerando que las partículas del disco están aproximadamente en equilibrio rotacional, y se agregan dispersiones de velocidad de acuerdo con el parámetro de Toomre Q=1.5.

  18. modelo "depredador-presa"

    Directory of Open Access Journals (Sweden)

    Óscar de Juan

    2005-01-01

    Full Text Available En este artículo se examina la interacción entre el sector real de la economía (representado por la tasa de crecimiento y el sector financiero (representado por la tasa de interés. Se utiliza el modelo depredador-presa propuesto en 1926 por los científicos naturales Lotka y Volterra, y aplicado por primera vez al ámbito económico por Goodwin en 1967. A diferencia de los modelos convencionales del ciclo económico, cuyo punto de partida suelen ser las perturbaciones exógenas sobre la economía real, nuestra atención se centrará en descubrir los focos de inestabilidad financiera. Analizaremos también los mecanismos de propagación hacia el sector real, y las circunstancias que acotan el ciclo dentro de los límites que se observan en la realidad económica. Las restricciones crediticias impuestas por los bancos parecen ser un elemento decisivo.

  19. A importância do treino de comunicação na terapia comportamental de casal La importancia del entrenamiento en comunicación en la terapia comportamental de pareja The scope of communication training in behavioral marital therapy

    Directory of Open Access Journals (Sweden)

    Lucilene Prado e Silva

    2008-03-01

    Full Text Available A modificação da interação entre os parceiros e o treino de resolução de problemas foram aspectos importantes desde o início do movimento da terapia comportamental de casal. Entretanto, o treino de comunicação sempre se destacou por possibilitar que os parceiros mudem o processo central de negociação do relacionamento, de enfrentamento de problemas e de convivência em geral. Destarte, esse aspecto é potencialmente forte e capaz de influenciar outros fatores relevantes na terapia de casal. Analisando detalhadamente como oficinas de comunicação foram conduzidas desde o início histórico da terapia comportamental de casal, percebe-se quanto esse procedimento continua atual dentro da filosofia contextualista da nova onda da terapia comportamental integrativa de casal. O presente artigo destaca assim o treino de comunicação como ingrediente essencial da abordagem comportamental de casal.La modificación de la interacción entre los compañeros y el entrenamiento de resolución de problemas fueron aspectos importantes desde el inicio del movimiento da terapia comportamental de casal. Sin embargo, el entrenamiento de comunicación siempre se destacó por hacer posible que los compañeros puedan cambiar el proceso central de negociación de la relación, de enfrentamiento de problemas y de convivencia en general, siendo, por lo tanto, un aspecto potencialmente fuerte, influenciando otros aspectos relevantes en la terapia de casal. Analizando detalladamente cómo talleres de comunicación fueron conducidos desde el inicio histórico de la terapia comportamental de pareja, se percibe el cuánto ese procedimiento sigue actual dentro de la filosofía contextualista de la nueva ola de la terapia comportamental integrativa de pareja. El presente artículo destaca de este modo el entrenamiento de comunicación como ingrediente esencial del abordaje comportamental de pareja.Changes in behavioral exchanges between partners and problem

  20. The fuzzy WOD model

    DEFF Research Database (Denmark)

    Franco de los Rios, Camilo Andres; Hougaard, Jens Leth; Nielsen, Kurt

    for decision support and multidimensional interval analysis. First, the original approach is extended using fuzzy set theory which makes it possible to handle both non-interval and interval data. Second, we re-examine the ranking procedure based on semi-equivalence classes and suggest a new complementary...

  1. FUZZY PREFERENCES IN CONFLICTS

    Institute of Scientific and Technical Information of China (English)

    Mubarak S. AL-MUTAIRI; Keith W. HIPEL; Mohamed S. KAMEL

    2008-01-01

    A systematic fuzzy approach is developed to model fuzziness and uncertainties in the preferences of decision makers involved in a conflict. This unique fuzzy preference formulation is used within the paradigm of the Graph Model for Conflict Resolution in which a given dispute is modeled in terms of decision makers, each decision maker's courses of actions or options, and each decision maker's preferences concerning the states or outcomes which could take place. In order to be able to determine the stability of each state for each decision maker and the possible equilibria or resolutions, a range of solution concepts describing potential human behavior under conflict are defined for use with fuzzy preferences. More specifically, strong and weak definitions of stability are provided for the solution concepts called Nash, general metarational, symmetric metarational, and sequential stability. To illustrate how these solution concepts can be conveniently used in practice, they are applied to a dispute over the contamination of an aquifer by a chemical company located in Elmira, Ontario, Canada.

  2. Fuzzy efficiency without convexity

    DEFF Research Database (Denmark)

    Hougaard, Jens Leth; Balezentis, Tomas

    2014-01-01

    approach builds directly upon the definition of Farrell's indexes of technical efficiency used in crisp FDH. Therefore we do not require the use of fuzzy programming techniques but only utilize ranking probabilities of intervals as well as a related definition of dominance between pairs of intervals. We...

  3. Fuzziness at the horizon

    Energy Technology Data Exchange (ETDEWEB)

    Batic, Davide, E-mail: dbatic@uniandes.edu.c [Departamento de Matematica, Universidad de los Andes, Cra 1E, No. 18A-10, Bogota, Colombia Department of Mathematics, University of West Indies, Kingston (Jamaica); Nicolini, Piero, E-mail: nicolini@th.physik.uni-frankfurt.d [Frankfurt Institute for Advanced Studies (FIAS), Institut fuer Theoretische Physik, Johann Wolfgang Goethe-Universitaet, Ruth-Moufang-Strasse 1, 60438 Frankfurt am Main (Germany)

    2010-08-16

    We study the stability of the noncommutative Schwarzschild black hole interior by analysing the propagation of a massless scalar field between the two horizons. We show that the spacetime fuzziness triggered by the field higher momenta can cure the classical exponential blue-shift divergence, suppressing the emergence of infinite energy density in a region nearby the Cauchy horizon.

  4. Fuzzy knowledge management for the semantic web

    CERN Document Server

    Ma, Zongmin; Yan, Li; Cheng, Jingwei

    2014-01-01

    This book goes to great depth concerning the fast growing topic of technologies and approaches of fuzzy logic in the Semantic Web. The topics of this book include fuzzy description logics and fuzzy ontologies, queries of fuzzy description logics and fuzzy ontology knowledge bases, extraction of fuzzy description logics and ontologies from fuzzy data models, storage of fuzzy ontology knowledge bases in fuzzy databases, fuzzy Semantic Web ontology mapping, and fuzzy rules and their interchange in the Semantic Web. The book aims to provide a single record of current research in the fuzzy knowledge representation and reasoning for the Semantic Web. The objective of the book is to provide the state of the art information to researchers, practitioners and graduate students of the Web intelligence and at the same time serve the knowledge and data engineering professional faced with non-traditional applications that make the application of conventional approaches difficult or impossible.

  5. Intuitionistic Fuzzy Graphs with Categorical Properties

    Directory of Open Access Journals (Sweden)

    Hossein Rashmanlou

    2015-09-01

    Full Text Available The main purpose of this paper is to show the rationality of some operations, defined or to be defined, on intuitionistic fuzzy graphs. Firstly, three kinds of new product operations (called direct product, lexicographic product, and strong product are defined in intuitionistic fuzzy graphs, and some important notions on intuitionistic fuzzy graphs are demonstrated by characterizing these notions and their level counterparts graphs such as intuitionistic fuzzy complete graph, cartesian product of intuitionistic fuzzy graphs, composition of intuitionistic fuzzy graphs, union of intuitionistic fuzzy graphs, and join of intuitionistic fuzzy graphs. As a result, a kind of representations of intuitionistic fuzzy graphs and intuitionistic fuzzy complete graphs are given. Next, categorical goodness of intuitionistic fuzzy graphs is illustrated by proving that the category of intuitionistic fuzzy graphs and homomorphisms between them is isomorphic-closed, complete, and co-complete.

  6. Probability representations of fuzzy systems

    Institute of Scientific and Technical Information of China (English)

    LI Hongxing

    2006-01-01

    In this paper, the probability significance of fuzzy systems is revealed. It is pointed out that COG method, a defuzzification technique used commonly in fuzzy systems, is reasonable and is the optimal method in the sense of mean square. Based on different fuzzy implication operators, several typical probability distributions such as Zadeh distribution, Mamdani distribution, Lukasiewicz distribution, etc. are given. Those distributions act as "inner kernels" of fuzzy systems. Furthermore, by some properties of probability distributions of fuzzy systems, it is also demonstrated that CRI method, proposed by Zadeh, for constructing fuzzy systems is basically reasonable and effective. Besides, the special action of uniform probability distributions in fuzzy systems is characterized. Finally, the relationship between CRI method and triple I method is discussed. In the sense of construction of fuzzy systems, when restricting three fuzzy implication operators in triple I method to the same operator, CRI method and triple I method may be related in the following three basic ways: 1) Two methods are equivalent; 2) the latter is a degeneration of the former; 3) the latter is trivial whereas the former is not. When three fuzzy implication operators in triple I method are not restricted to the same operator, CRI method is a special case of triple I method; that is, triple I method is a more comprehensive algorithm. Since triple I method has a good logical foundation and comprises an idea of optimization of reasoning, triple I method will possess a beautiful vista of application.

  7. Hierarchical type-2 fuzzy aggregation of fuzzy controllers

    CERN Document Server

    Cervantes, Leticia

    2016-01-01

    This book focuses on the fields of fuzzy logic, granular computing and also considering the control area. These areas can work together to solve various control problems, the idea is that this combination of areas would enable even more complex problem solving and better results. In this book we test the proposed method using two benchmark problems: the total flight control and the problem of water level control for a 3 tank system. When fuzzy logic is used it make it easy to performed the simulations, these fuzzy systems help to model the behavior of a real systems, using the fuzzy systems fuzzy rules are generated and with this can generate the behavior of any variable depending on the inputs and linguistic value. For this reason this work considers the proposed architecture using fuzzy systems and with this improve the behavior of the complex control problems.

  8. Neuro-fuzzy system modeling based on automatic fuzzy clustering

    Institute of Scientific and Technical Information of China (English)

    Yuangang TANG; Fuchun SUN; Zengqi SUN

    2005-01-01

    A neuro-fuzzy system model based on automatic fuzzy clustering is proposed.A hybrid model identification algorithm is also developed to decide the model structure and model parameters.The algorithm mainly includes three parts:1) Automatic fuzzy C-means (AFCM),which is applied to generate fuzzy rules automatically,and then fix on the size of the neuro-fuzzy network,by which the complexity of system design is reducesd greatly at the price of the fitting capability;2) Recursive least square estimation (RLSE).It is used to update the parameters of Takagi-Sugeno model,which is employed to describe the behavior of the system;3) Gradient descent algorithm is also proposed for the fuzzy values according to the back propagation algorithm of neural network.Finally,modeling the dynamical equation of the two-link manipulator with the proposed approach is illustrated to validate the feasibility of the method.

  9. Modelos evolutivos predarwinistas

    Directory of Open Access Journals (Sweden)

    Galera, Andrés

    2002-05-01

    Full Text Available Not available

    El objetivo del trabajo es demostrar que el concepto de variación cronológica específica filética es un supuesto biológico ampliamente debatido por los naturalistas durante la primera mitad del siglo XIX, precedentemente a la formulación de la teoría darwinista. Como argumento de esta hipótesis analizaremos el ideario de científicos como Georges Cuvier, Etienne Geoffroy Saint-Hilaire, Heinrich-Georg Bronn, y Frédéric Gérard, comparando sus modelos evolutivos con el esquema presentado por Darwin posteriormente, 1859.

  10. Generalised Interval-Valued Fuzzy Soft Set

    OpenAIRE

    Shawkat Alkhazaleh; Abdul Razak Salleh

    2012-01-01

    We introduce the concept of generalised interval-valued fuzzy soft set and its operations and study some of their properties. We give applications of this theory in solving a decision making problem. We also introduce a similarity measure of two generalised interval-valued fuzzy soft sets and discuss its application in a medical diagnosis problem: fuzzy set; soft set; fuzzy soft set; generalised fuzzy soft set; generalised interval-valued fuzzy soft set; interval-valued fuzz...

  11. On Intuitionistic Fuzzy Magnified Translation in Semigroups

    OpenAIRE

    Sardar, Sujit Kumar; Mandal, Manasi; Majumder, Samit Kumar

    2011-01-01

    The notion of intuitionistic fuzzy sets was introduced by Atanassov as a generalization of the notion of fuzzy sets. S.K Sardar and S.K. Majumder unified the idea of fuzzy translation and fuzzy multiplication of Vasantha Kandasamy to introduce the concept of fuzzy magnified translation in groups and semigroups. The purpose of this paper is to intuitionistically fuzzify(by using Atanassov's idea) the concept of fuzzy magnified translation in semigroups. Here among other results we obtain some ...

  12. Lower and Upper Fuzzy Topological Subhypergroups

    Institute of Scientific and Technical Information of China (English)

    Irina CRISTEA; Jian Ming ZHAN

    2013-01-01

    This paper provides a new connection between algebraic hyperstructures and fuzzy sets.More specifically,using both properties of fuzzy topological spaces and those of fuzzy subhypergroups,we define the notions of lower (upper) fuzzy topological subhypergroups of a hypergroup endowed with a fuzzy topology.Some results concerning the image and the inverse image of a lower (upper) topological subhypergroup under a very good homomorphism of hypergroups (endowed with fuzzy topologies) are pointed out.

  13. The squashed fuzzy sphere, fuzzy strings and the Landau problem

    CERN Document Server

    Andronache, Stefan

    2015-01-01

    We discuss the squashed fuzzy sphere, which is a projection of the fuzzy sphere onto the equatorial plane, and use it to illustrate the stringy aspects of noncommutative field theory. We elaborate explicitly how strings linking its two coincident sheets arise in terms of fuzzy spherical harmonics. In the large N limit, the matrix-model Laplacian is shown to correctly reproduce the semi-classical dynamics of these charged strings, as given by the Landau problem.

  14. The squashed fuzzy sphere, fuzzy strings and the Landau problem

    Science.gov (United States)

    Andronache, Stefan; Steinacker, Harold C.

    2015-07-01

    We discuss the squashed fuzzy sphere, which is a projection of the fuzzy sphere onto the equatorial plane, and use it to illustrate the stringy aspects of noncommutative field theory. We elaborate explicitly how strings linking its two coincident sheets arise in terms of fuzzy spherical harmonics. In the large N limit, the matrix-model Laplacian is shown to correctly reproduce the semi-classical dynamics of these charged strings, as given by the Landau problem.

  15. Genetic Algorithm Optimization for Determining Fuzzy Measures from Fuzzy Data

    Directory of Open Access Journals (Sweden)

    Chen Li

    2013-01-01

    Full Text Available Fuzzy measures and fuzzy integrals have been successfully used in many real applications. How to determine fuzzy measures is a very difficult problem in these applications. Though there have existed some methodologies for solving this problem, such as genetic algorithms, gradient descent algorithms, neural networks, and particle swarm algorithm, it is hard to say which one is more appropriate and more feasible. Each method has its advantages. Most of the existed works can only deal with the data consisting of classic numbers which may arise limitations in practical applications. It is not reasonable to assume that all data are real data before we elicit them from practical data. Sometimes, fuzzy data may exist, such as in pharmacological, financial and sociological applications. Thus, we make an attempt to determine a more generalized type of general fuzzy measures from fuzzy data by means of genetic algorithms and Choquet integrals. In this paper, we make the first effort to define the σ-λ rules. Furthermore we define and characterize the Choquet integrals of interval-valued functions and fuzzy-number-valued functions based on σ-λ rules. In addition, we design a special genetic algorithm to determine a type of general fuzzy measures from fuzzy data.

  16. GENERALIZED FUZZY FILTERS OF BL-ALGEBRAS

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The concept of quasi-coincidence of a fuzzy interval value with an interval valued fuzzy set is considered. In fact, this is a generalization of quasi-coincidence of a fuzzy point with a fuzzy set. By using this new idea, the notion of interval valued (∈, ∈∨q)-fuzzy filters in BL-algebras which is a generalization of fuzzy filters of BL-algebras, is defined, and related properties are investigated. In particular, the concept of a fuzzy subgroup with thresholds is extended to the concept of an interval valued fuzzy filter with thresholds in BL-algebras.

  17. On the intuitionistic fuzzy topological spaces

    Energy Technology Data Exchange (ETDEWEB)

    Saadati, Reza [Department of Mathematics, Azad University, Amol, P.O. Box 678 (Iran, Islamic Republic of)] e-mail: rsaadati@eml.cc; Park, Jin Han [Division of Mathematical Sciences, Pukyong National University, 599-1 Daeyeon, 3-Dong Nam-Gu, Pusan 608 737 (Korea, Republic of)] e-mail: jihpark@pknu.ac.kr

    2006-01-01

    In this paper, we define precompact set in intuitionistic fuzzy metric spaces and prove that any subset of an intuitionistic fuzzy metric space is compact if and only if it is precompact and complete. Also we define topologically complete intuitionistic fuzzy metrizable spaces and prove that any G{sub {delta}} set in a complete intuitionistic fuzzy metric spaces is a topologically complete intuitionistic fuzzy metrizable space and vice versa. Finally, we define intuitionistic fuzzy normed spaces and fuzzy boundedness for linear operators and so we prove that every finite dimensional intuitionistic fuzzy normed space is complete.

  18. On the intuitionistic fuzzy topological spaces

    Science.gov (United States)

    Saadati, Reza; Park, Jin Han

    2006-01-01

    In this paper, we define precompact set in intuitionistic fuzzy metric spaces and prove that any subset of an intuitionistic fuzzy metric space is compact if and only if it is precompact and complete. Also we define topologically complete intuitionistic fuzzy metrizable spaces and prove that any $G_{\\delta }$ set in a complete intuitionistic fuzzy metric spaces is a topologically complete intuitionistic fuzzy metrizable space and vice versa. Finally, we define intuitionistic fuzzy normed spaces and fuzzy boundedness for linear operators and so we prove that every finite dimensional intuitionistic fuzzy normed space is complete.

  19. Teoria e eficácia da terapia comportamental dialética na bulimia nervosa e no transtorno da compulsão alimentar periódica Theory and efficacy of dialectical behavior therapy of bulimia nervosa and binge eating disorder

    Directory of Open Access Journals (Sweden)

    Rui Alexandre Nunes-Costa

    2009-01-01

    Full Text Available OBJETIVOS: Procura-se analisar as atuais evidências empíricas e teóricas sobre o modo de operar nas intervenções comportamentais dialéticas. Procedeu-se igualmente à análise da eficácia dessa terapia no tratamento da bulimia nervosa e no transtorno da compulsão alimentar periódica. MÉTODO: Realizou-se uma revisão agregativa da literatura, recorrendo às palavras-chave "dialectical behavior therapy", "bulimia nervosa" e "binge eating disorder" nas bases de dados PsycInfo e MedLine e em livros da especialidade, sob o critério da atualidade e premência das publicações levantadas. RESULTADOS: A terapia comportamental dialética, inicialmente desenhada para o transtorno de personalidade borderline, tem-se estendido a outros transtornos do eixo I. Sua aplicação às perturbações alimentares sustentase num paradigma dialético com o recurso das estratégias comportamentais e cognitivas. Esse modelo permite aos pacientes uma regulação mais efetiva dos estados afetivos negativos, reduzindo a probabilidade da ocorrência de comportamentos bulímicos e de compulsão alimentar periódica. CONCLUSÃO: Embora escasseiem estudos sobre a sua eficácia, os resultados existentes parecem comprovar a eficácia da terapia comportamental dialética nas populações descritas.OBJECTIVES: Current theoretical and empirical evidences on how to operate in dialectical behavioral interventions were examined. The effectiveness of these interventions in the treatment of bulimia nervosa and binge eating disorder were analyzed too. METHOD: An aggregative literature review was made, using the keywords "dialectical behavior therapy", "bulimia nervosa" and "binge eating disorder", from the database PsycInfo and MedLine and from reference books, selecting the most representative and recent scientific texts about this psychotherapy model. RESULTS: Dialectical behavior therapy, initially designed for borderline personality disorder, has been extended to other

  20. Maturidade emocional e avaliação comportamental de crianças filhas de alcoolistas Emotional maturity and behavioral assessment of children of alcoholics

    Directory of Open Access Journals (Sweden)

    Joseane de Souza

    2005-08-01

    Full Text Available Filhos de alcoolistas têm sido apontados como mais vulneráveis ao desenvolvimento de problemas emocionais e comportamentais. O presente trabalho teve como objetivo avaliar comparativamente filhos de alcoolistas e filhos de não-alcoolistas nos aspectos cognitivo e emocional, através do Teste Desenho da Figura Humana, e comportamental, segundo a percepção das mães, utilizando-se a Escala Comportamental de Rutter. Os sujeitos foram 20 filhos de alcoolistas e 20 filhos de não-alcoolistas, com idades entre 9 e 12 anos, matriculados no Ensino Fundamental. Cada grupo foi formado de 10 meninos e 10 meninas. Na análise dos resultados, filhos de alcoolistas apresentaram diferença estatisticamente significativa nos aspectos emocional e comportamental. Eles revelaram timidez, insegurança e baixa auto-estima. Segundo as mães, mostraram: impaciência, irritação, agitação, desobediência e dependência. As meninas filhas de alcoolistas apresentaram mais problemas emocionais e de comportamento que as meninas filhas de não-alcoolistas. Neste trabalho as meninas se revelaram mais vulneráveis que os meninos nos domínios emocional e comportamental.Children of alcoholics (COAs have been found to be more vulnerable to emotional and behavioral problems. This study had the aim to assess comparatively children of alcoholics and children of nonalcoholics. The Human Figure Drawing Test was used to assess their cognitive and emotional aspects. To assess mother's behavioral aspects the Rutter's Scale was used. Subjects: 20 children of alcoholics (COAs and 20 children of nonalcoholics (Non-COAs, 9 to 12 years of age, enrolled at elementary school. Each group was composed of 10 boys and 10 girls. Results: children of alcoholics showed difference statistically significant in emotional and behavioral aspects. They showed: shyness, insecurity and low self-esteem. According their mothers opinion they are: impatient, irritable, agitated, disobedient and

  1. TRANSTORNO DESAFIADOR DE OPOSIÇÃO (TDO) E ALTAS HABILIDADES/SUPERDOTAÇÃO (AH): UMA INTERVENÇÃO PSICOPEDAGÓGICA DE BASE COGNITIVO COMPORTAMENTAL

    OpenAIRE

    2014-01-01

    DOI: 10.12957/sustinere.2014.11806Este artigo tem por objetivo discutir os vários instrumentos adotados pela abordagem cognitivo-comportamental, no atendimento psicopedagógico de uma criança com transtorno desafiador de oposição e altas habilidades. A partir do diagnóstico realizado por um neuropediatra, relativo ao transtorno desafiador de oposição, instrumentos foram introduzidos no processo psicopedagógico, tais como a Investigação das cognições, emoções e ações; a Economia de fichas; a Pa...

  2. Efecto del Enriquecimiento Ambiental en la Respuesta Fisiológica y Comportamental de Osos de Anteojos en un Zoológico de Colombia

    OpenAIRE

    Andrea Vivas-Duque; Germán Jiménez; Catalina Rodríguez

    2012-01-01

    Con el fin de evaluar el efecto del enriquecimiento ambiental en el estrés, en la respuesta fisiológica y comportamental, en el presente estudio se trabajó con cuatro ejemplares adultos de la especie Tremactos ornatus cautivos en el Zoológico Jaime Duque, los cuales fueron evaluados de febrero a mayo del 2008, con un premuéstreo y dos fases, una de control y una de tratamiento, en la cual se realizaron actividades de enriquecimiento, tales como cambios en la alimentación, esencias y algunos o...

  3. Envolvimento parental na terapia cognitivo comportamental em crianças com perturbações de ansiedade : caracterização e seus determinantes

    OpenAIRE

    Santos, Inês Cabugueira Custódio dos

    2013-01-01

    Tese de mestrado, Psicologia (Secção de Psicologia Clínica e da Saúde - Núcleo de Psicologia da Saúde e da Doença), Universidade de Lisboa, Faculdade de Psicologia, 2013 Enquadramento: A Terapia Cognitivo Comportamental tem sido apontada como a mais eficaz na intervenção com crianças ansiosas. A forma como os pais são envolvidos no processo tem sido alvo de diversos estudos que procuram verificar as diferenças eficácia terapêutica, face aos diferentes tipos de envolvimento parental. O pres...

  4. Intervenção cognitivo-comportamental e adesão ao tratamento em pessoas com HIV/Aids

    OpenAIRE

    Faustino,Quintino de Medeiros; Seidl, Eliane Maria Fleury

    2010-01-01

    Foram investigados efeitos da intervenção cognitivo-comportamental sobre a adesão inadequada à terapia antirretroviral. Participaram dois homens (P1 e P2) acometidos pela Aids. Uma mulher soropositiva (P3) funcionou como controle. Foram comparadas avaliações de comportamento de adesão, estratégias de enfrentamento, expectativa de autoeficácia para aderir à terapia e variáveis biológicas de três momentos - linha de base (LB), imediatamente após (M2) e três meses depois (M3) da intervenção. Os ...

  5. Stochastic Optimal Estimation with Fuzzy Random Variables and Fuzzy Kalman Filtering

    Institute of Scientific and Technical Information of China (English)

    FENG Yu-hu

    2005-01-01

    By constructing a mean-square performance index in the case of fuzzy random variable, the optimal estimation theorem for unknown fuzzy state using the fuzzy observation data are given. The state and output of linear discrete-time dynamic fuzzy system with Gaussian noise are Gaussian fuzzy random variable sequences. An approach to fuzzy Kalman filtering is discussed. Fuzzy Kalman filtering contains two parts: a real-valued non-random recurrence equation and the standard Kalman filtering.

  6. Fuzzy logic particle tracking velocimetry

    Science.gov (United States)

    Wernet, Mark P.

    1993-01-01

    Fuzzy logic has proven to be a simple and robust method for process control. Instead of requiring a complex model of the system, a user defined rule base is used to control the process. In this paper the principles of fuzzy logic control are applied to Particle Tracking Velocimetry (PTV). Two frames of digitally recorded, single exposure particle imagery are used as input. The fuzzy processor uses the local particle displacement information to determine the correct particle tracks. Fuzzy PTV is an improvement over traditional PTV techniques which typically require a sequence (greater than 2) of image frames for accurately tracking particles. The fuzzy processor executes in software on a PC without the use of specialized array or fuzzy logic processors. A pair of sample input images with roughly 300 particle images each, results in more than 200 velocity vectors in under 8 seconds of processing time.

  7. Fuzzy pharmacology: theory and applications.

    Science.gov (United States)

    Sproule, Beth A; Naranjo, Claudio A; Türksen, I Burhan

    2002-09-01

    Fuzzy pharmacology is a term coined to represent the application of fuzzy logic and fuzzy set theory to pharmacological problems. Fuzzy logic is the science of reasoning, thinking and inference that recognizes and uses the real world phenomenon that everything is a matter of degree. It is an extension of binary logic that is able to deal with complex systems because it does not require crisp definitions and distinctions for the system components. In pharmacology, fuzzy modeling has been used for the mechanical control of drug delivery in surgical settings, and work has begun evaluating its use in other pharmacokinetic and pharmacodynamic applications. Fuzzy pharmacology is an emerging field that, based on these initial explorations, warrants further investigation.

  8. O SECRETÁRIO EXECUTIVO E A FLEXIBILIDADE COMPORTAMENTAL NO TRABALHO THE EXECUTIVE SECRETARY AND BEHAVIORAL FLEXIBILITY AT WORK

    Directory of Open Access Journals (Sweden)

    Elisandréia Fontana Terra

    2012-05-01

    Full Text Available

    Este artigo tem como objetivo abordar a flexibilidade comportamental que é determinada pela capacidade de adaptação do indivíduo aos diversos perfis comportamentais que compõem o ambiente organizacional no qual ele está inserido, a qual é atribuída ao secretário executivo como uma habilidade profissional desejável devido à gama de pessoas com a qual ele se relaciona diariamente. Para isso foi realizada uma pesquisa bibliográfica que possibilitou a discussão das idéias de autores especializados na temática, e uma pesquisa exploratória que utilizou da entrevista pessoal aplicada a quatro secretários, através da qual foi possível a descrição das situações reais cotidianas dos secretários executivos participantes. Os resultados mostraram que esse profissional valoriza a realização profissional como motivação e sentido do trabalho e que, diante dos diferentes tipos comportamentais dos indivíduos, a persistência em manter o clima organizacional agradável através da capacidade de flexibilização comportamental é essencial. Ainda, grande importância foi dada ao diálogo, através do qual todos podem expor suas queixas, elogios e tudo o que julgarem necessário a fim de identificar as ameaças e oportunidades, bem como maximizar os pontos positivos existentes, para que exista sempre harmonia no ambiente de trabalho.

    The goal of this article is to approach the behavioral flexibility determined by the individual’s adaptation capability to the different behavioral profiles that compose the organizational environment in which they are inserted, which is a desired skill given the range of people they daily relate to. For this, a literature search has been performed and it has enabled a discussion of the ideas from authors specialized in this subject. Also an exploratory research has been made based on personal interviews applied to four secretaries, which enabled to describe real

  9. Análise dos efeitos de histórias de variação comportamental sobre o seguimento de regras An analysis of the effects of history of behavioral variation on rule-following behavior

    Directory of Open Access Journals (Sweden)

    José Guilherme Wady Santos

    2004-01-01

    Full Text Available Investigando a sensibilidade do seguir instruções à mudança (sinalizada nas contingências, 14 crianças, entre 8 e 9 anos de idade, foram expostas a um procedimento de escolha segundo o modelo. A tarefa era tocar 1 dos 2 estímulos de comparação na presença de 1 estímulo contextual. O experimento consistia de 3 fases; as contingências em vigor na Fase 1 eram revertidas na Fase 2 e restabelecidas na Fase 3. Transições de uma fase para outra eram sinalizadas. Os participantes foram atribuídos a 2 condições, que diferiam quanto ao número de instruções, correspondentes às contingências, apresentadas na Fase 1: era apresentada 1 única instrução na Condição UI e 3 diferentes instruções na Condição MI. Observou-se que 1 dos 6 participantes da Condição UI e 4 dos 8 da Condição MI deixaram de seguir instruções. Sugere-se que a interação entre a história de variação comportamental, gerada por diferentes instruções, e a sinalização da mudança nas contingências, pode tornar o comportamento instruído sensível a tal mudança.In a study concerning the sensitivity of instruction-following to signaled changes in contingencies, 14 children in the 8-to-9 age range were exposed to a matching-to-sample procedure. On this task, 1 of 2 comparison stimuli were touched in the presence of a contextual stimuli. There were 3 phases in the experiment. Those contingencies in effect in Phase 1 were reversed in Phase 2, and reestablished in Phase 3. The transition from one phase to another was cued by a signal. The participants were subjected to 2 conditions that differed in the number of instructions corresponding to the contingencies presented in Phase 1: Only 1 instruction was given in Condition UI, and 3 different instructions were given in Condition MI. One of the 6 participants in Condition UI and 4 of the 8 in Condition MI ceased following instructions. These results suggest that the presence of an interaction between

  10. LA LUDOPATÍA: REVISIÓN Y ANÁLISIS HACIA UN MODELO INTEGRAL

    Directory of Open Access Journals (Sweden)

    Yein Alexandra Muñoz Londoño

    2016-07-01

    Full Text Available En el artículo se describe la Ludopatía, partiendo de la premisa de la Organización Mundial de la Salud, donde se considera como una enfermedad; además se generan interrogantes sobre las formas de abordar e intervenir esta adicción comportamental, realizando un acercamiento a los modelos cognitivo conductual, farmacológico y prevención de recaídas; se realizó una búsqueda exhaustiva del fenómeno en diferentes bases de datos científi cas, electrónicas y también en documentos físicos como libros y revistas, citando entre otros autores expertos en el tema como Domínguez, Villoria, Bisso, Echeburúa. Esto permitió: una mejor comprensión de la ludopatía, la evidencia de falencias en los factores de protección para tratarla, la necesidad de abordar al ser humano de manera integral, el respeto por las diferencias de género y el establecimiento de objetivos terapéuticos acordes con la complejidad de la adicción.

  11. Intuitionistic fuzzy aggregation and clustering

    CERN Document Server

    Xu, Zeshui

    2012-01-01

    This book offers a systematic introduction to the clustering algorithms for intuitionistic fuzzy values, the latest research results in intuitionistic fuzzy aggregation techniques, the extended results in interval-valued intuitionistic fuzzy environments, and their applications in multi-attribute decision making, such as supply chain management, military system performance evaluation, project management, venture capital, information system selection, building materials classification, and operational plan assessment, etc.

  12. Phase structures in fuzzy geometries

    CERN Document Server

    Govindarajan, T R; Gupta, K S; Martin, X

    2012-01-01

    We study phase structures of quantum field theories in fuzzy geometries. Several examples of fuzzy geometries as well as QFT's on such geometries are considered. They are fuzzy spheres and beyond as well as noncommutative deformations of BTZ blackholes. Analysis is done analytically and through simulations. Several features like novel stripe phases as well as spontaneous symmetry breaking avoiding Colemen, Mermin, Wagner theorem are brought out. Also we establish that these phases are stable due to topological obstructions.

  13. COMPATIBLE EXTENSIONS OF FUZZY RELATIONS

    Institute of Scientific and Technical Information of China (English)

    Irina GEORGESCU

    2003-01-01

    In 1930 Szpilrajn proved that any strict partial order can be embedded in a strict linear order.This theorem was later refined by Dushnik and Miller (1941), Hansson (1968), Suzumura (1976),Donaldson and Weymark (1998), Bossert (1999). Particularly Suzumura introduced the important concept of compatible extension of a (crisp) relation. These extension theorems have an important role in welfare economics. In particular Szpilrajn theorem is the main tool for proving a known theorem of Richter that establishes the equivalence between rational and congruous consumers. In 1999 Duggan proved a general extension theorem that contains all these results. In this paper we introduce the notion of compatible extension of a fuzzy relation and we prove an extension theorem for fuzzy relations. Our result generalizes to fuzzy set theory the main part of Duggan's theorem. As applications we obtain fuzzy versions of the theorems of Szpilrajn, Hansson and Suzumura. We also prove that an asymmetric and transitive fuzzy relation has a compatible extension that is total, asymmetric and transitive.Our results can be useful in the theory of fuzzy consumers. We can prove that any rational fuzzyconsumer is congruous, extending to a fuzzy context a part of Richter's theorem. To prove that acongruous fuzzy consumer is rational remains an open problem. A proof of this result can somehowuse a fuzzy version of Szpilrajn theorem.

  14. Fuzzy-Contextual Contrast Enhancement.

    Science.gov (United States)

    Parihar, Anil; Verma, Om; Khanna, Chintan

    2017-02-08

    This paper presents contrast enhancement algorithms based on fuzzy contextual information of the images. We introduce fuzzy similarity index and fuzzy contrast factor to capture the neighborhood characteristics of a pixel. A new histogram, using fuzzy contrast factor of each pixel is developed, and termed as the fuzzy dissimilarity histogram (FDH). A cumulative distribution function (CDF) is formed with normalized values of FDH and used as a transfer function to obtain the contrast enhanced image. The algorithm gives good contrast enhancement and preserves the natural characteristic of the image. In order to develop a contextual intensity transfer function, we introduce a fuzzy membership function based on fuzzy similarity index and coefficient of variation of the image. The contextual intensity transfer function is designed using the fuzzy membership function to achieve final contrast enhanced image. The overall algorithm is referred as the fuzzy contextual contrast-enhancement (FCCE) algorithm. The proposed algorithms are compared with conventional and state-of-art contrast enhancement algorithms. The quantitative and visual assessment of the results is performed. The results of quantitative measures are statistically analyzed using t-test. The exhaustive experimentation and analysis show the proposed algorithm efficiently enhances contrast and yields in natural visual quality images.

  15. A New View on Fuzzy Hypermodules

    Institute of Scientific and Technical Information of China (English)

    Jian Ming ZHAN; Bijan DAVVAZ; K. P. SHUM

    2007-01-01

    We describe the relationship between the fuzzy sets and the algebraic hyperstructures.In fact,this paper is a continuation of the ideas presented by Davvaz in (Fuzzy Sets Syst.,117: 477-484,2001) and Bhakat and Das in (Fuzzy Sets Syst.,80: 359-368,1996).The concept of the quasi-coincidence of a fuzzy interval value with an interval-valued fuzzy set is introduced and this is a naturalgeneralization of the quasi-coincidence of a fuzzy point in fuzzy sets.By using this new idea,the conceptof interval-valued (α,β)-fuzzy sub-hypermodules of a hypermodule is defined.This newly definedinterval-valued (α,β)-fuzzy sub-hypermodule is a generalization of the usual fuzzy sub-hypermodule.We shall study such fuzzy sub-hypermodules and consider the implication-based interval-valued fuzzysub-hypermodules of a hypermodule.

  16. New Closeness Coefficients for Fuzzy Similarity Based Fuzzy TOPSIS: An Approach Combining Fuzzy Entropy and Multidistance

    Directory of Open Access Journals (Sweden)

    Mikael Collan

    2015-01-01

    Full Text Available This paper introduces new closeness coefficients for fuzzy similarity based TOPSIS. The new closeness coefficients are based on multidistance or fuzzy entropy, are able to take into consideration the level of similarity between analysed criteria, and can be used to account for the consistency or homogeneity of, for example, performance measuring criteria. The commonly known OWA operator is used in the aggregation process over the fuzzy similarity values. A range of orness values is considered in creating a fuzzy overall ranking for each object, after which the fuzzy rankings are ordered to find a final linear ranking. The presented method is numerically applied to a research and development project selection problem and the effect of using two new closeness coefficients based on multidistance and fuzzy entropy is numerically illustrated.

  17. Modelos matemáticos

    OpenAIRE

    Camarena, Patricia; Martínez, Víctor; Salett, María

    2004-01-01

    Este reporte corresponde a la contribución colectiva que surgió del debate del Grupo de Discusión y trabajo titulado: Modelos Matemáticos. En éste se abordan las siguientes preguntas: a) ¿Por qué los modelos matemáticos en los diferentes niveles educativos?. b) ¿Qué relación existe entre los modelos matemáticos, la resolución de problemas y la matemática en el contexto de las ciencias?. Al mismo tiempo que se da información acerca de las investigaciones que se han enfocado a los modelos matem...

  18. Fuzzy dot ideals and fuzzy dot H-ideals of BCH-algebras

    Institute of Scientific and Technical Information of China (English)

    PENG Jia-yin

    2008-01-01

    The notions of fuzzy dot ideals and fuzzy dot H-ideals in BCH-algebras are intro duced,several appropriate examples are provided,and their some properties are investigated.The relations among fuzzy ideal,fuzzy H-ideal,fuzzy dot ideal and fuzzy dot H-ideals in BCH algebras are discussed,several equivalent depictions of fuzzy dot ideal are obtained. How to deal with the homomorphic image and inverse image of fuzzy dot ideals (fuzzy dot H-ideals) are studied. The relations between a fuzzy dot ideal (fuzzy dot H-ideal) in BCH-algebras and a fuzzy dot ideal (fuzzy dot H-ideal) in the product algebra of BCH-algebras are given.

  19. Fuzzy Perfect Mappings and Q-Compactness in Smooth Fuzzy Topological Spaces

    Directory of Open Access Journals (Sweden)

    C. Kalaivani

    2014-03-01

    Full Text Available We point out that the product of two fuzzy closed sets of smooth fuzzy topological spaces need not be fuzzy closed with respect to the the existing notion of product smooth fuzzy topology. To get this property, we introduce a new suitable product smooth fuzzy topology. We investigate whether F1×F2 and (F,H are weakly smooth fuzzy continuity whenever F1, F2, F and H are weakly smooth fuzzy continuous. Using this new product smooth fuzzy topology, we define smooth fuzzy perfect mapping and prove that composition of two smooth fuzzy perfect mappings is smooth fuzzy perfect under some additional conditions. We also introduce two new notions of compactness called Q-compactness and Q-α-compactness; and discuss the compactness of the image of a Q-compact set (Q-α-compact set under a weakly smooth fuzzy continuous function ((α,β-weakly smooth fuzzy continuous function.

  20. Spinning the fuzzy sphere

    Energy Technology Data Exchange (ETDEWEB)

    Berenstein, David [Department of Applied Mathematics and Theoretical Physics,University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom); Department of Physics, University of California Santa Barbara,Santa Barbara, California 93106 (United States); Dzienkowski, Eric; Lashof-Regas, Robin [Department of Physics, University of California Santa Barbara,Santa Barbara, California 93106 (United States)

    2015-08-27

    We construct various exact analytical solutions of the SO(3) BMN matrix model that correspond to rotating fuzzy spheres and rotating fuzzy tori. These are also solutions of Yang Mills theory compactified on a sphere times time and they are also translationally invariant solutions of the N=1{sup ∗} field theory with a non-trivial charge density. The solutions we construct have a ℤ{sub N} symmetry, where N is the rank of the matrices. After an appropriate ansatz, we reduce the problem to solving a set of polynomial equations in 2N real variables. These equations have a discrete set of solutions for each value of the angular momentum. We study the phase structure of the solutions for various values of N. Also the continuum limit where N→∞, where the problem reduces to finding periodic solutions of a set of coupled differential equations. We also study the topology change transition from the sphere to the torus.

  1. Fuzzy controllers based on some fuzzy implication operators and their response functions

    Institute of Scientific and Technical Information of China (English)

    LI Hongxing; YOU Fei; PENG Jiayin

    2004-01-01

    The fuzzy controllers constructed by 23 fuzzy implication operators based on CRI algorithm and their response functions are discussed.The conclusions show that the fuzzy controllers constructed by 9 fuzzy implication operators are universal approximators to continuous functions and can be used in practical fuzzy control systems.And these 9 fuzzy implication operators except for Einstein operator intersection are all the adjoint pairs of some fuzzy implication operators.Besides, there are 3 other fuzzy controllers formed by fuzzy implication operators being regarded approximately as fitted functions.

  2. conceptos y modelos institucionales

    Directory of Open Access Journals (Sweden)

    Hernán Thomas

    2005-01-01

    Full Text Available El marco de referencia conceptual y el instrumental de políticas públicas de Ciencia, Tecnología e Innovación utilizados en América Latina se han mostrado crecientemente inadecuados para responder a los desafíos del desarrollo socioeconómico y los procesos de democratización regionales. El objetivo de este artículo es analizar críticamente tanto las conceptualizaciones actualmente en uso en la región como los modelos institucionales implementados en las políticas públicas locales de Ciencia, Tecnología e Innovación. Con ese fin se propone el concepto “transducción” (proceso auto-organizado de alteración de sentido que aparece cuando un elemento -idea, concepto, tecnología o herramienta heurística- es trasladado de un contexto sistémico a otro como una herramienta analítica adecuada para comprender tanto las limitaciones explicativas de los conceptos actualmente en uso como la dinámica de construcción de la retórica normativa local.

  3. Fuzzy controlofanylonpolymerizationsemi-batchreactor

    OpenAIRE

    Wakabayashi, C; Embiruçu, Marcelo; Fontes, Cristiano; Kalid, Ricardo

    2009-01-01

    Acesso restrito: Texto completo. p. 537-553 Batch and semi-batch polymerization reactors with specified trajectories for certain process variables present challenging control problems. This work reports, results and procedures related to the application of PI (proportional and integral) fuzzy control in a semi-batch reactor for the production of nylon 6. Closed loop simulation results were based on a phenomenological model adjusted for a commercial reactor and they attest to the potential ...

  4. FUZZY REASONING IN CYCLES

    Institute of Scientific and Technical Information of China (English)

    曹立明

    1990-01-01

    By the similarity between the syllogism in logic and a path proposition in graph theory,a new concept,fuzzy reasoning graph G has been given in this paper. Transitive closure has been studied and used to do reasoning related to self-loop in G,and an algorithm has been designed to cope with reasoning in other cycles in G. Both approaches are applicable and efficient.

  5. Fuzzy recurrence plots

    Science.gov (United States)

    Pham, T. D.

    2016-12-01

    Recurrence plots display binary texture of time series from dynamical systems with single dots and line structures. Using fuzzy recurrence plots, recurrences of the phase-space states can be visualized as grayscale texture, which is more informative for pattern analysis. The proposed method replaces the crucial similarity threshold required by symmetrical recurrence plots with the number of cluster centers, where the estimate of the latter parameter is less critical than the estimate of the former.

  6. Emergent fuzzy geometry and fuzzy physics in four dimensions

    Science.gov (United States)

    Ydri, Badis; Rouag, Ahlam; Ramda, Khaled

    2017-03-01

    A detailed Monte Carlo calculation of the phase diagram of bosonic mass-deformed IKKT Yang-Mills matrix models in three and six dimensions with quartic mass deformations is given. Background emergent fuzzy geometries in two and four dimensions are observed with a fluctuation given by a noncommutative U (1) gauge theory very weakly coupled to normal scalar fields. The geometry, which is determined dynamically, is given by the fuzzy spheres SN2 and SN2 × SN2 respectively. The three and six matrix models are effectively in the same universality class. For example, in two dimensions the geometry is completely stable, whereas in four dimensions the geometry is stable only in the limit M ⟶ ∞, where M is the mass of the normal fluctuations. The behaviors of the eigenvalue distribution in the two theories are also different. We also sketch how we can obtain a stable fuzzy four-sphere SN2 × SN2 in the large N limit for all values of M as well as models of topology change in which the transition between spheres of different dimensions is observed. The stable fuzzy spheres in two and four dimensions act precisely as regulators which is the original goal of fuzzy geometry and fuzzy physics. Fuzzy physics and fuzzy field theory on these spaces are briefly discussed.

  7. Performance comparison of fuzzy and non-fuzzy classification methods

    Directory of Open Access Journals (Sweden)

    B. Simhachalam

    2016-07-01

    Full Text Available In data clustering, partition based clustering algorithms are widely used clustering algorithms. Among various partition algorithms, fuzzy algorithms, Fuzzy c-Means (FCM, Gustafson–Kessel (GK and non-fuzzy algorithm, k-means (KM are most popular methods. k-means and Fuzzy c-Means use standard Euclidian distance measure and Gustafson–Kessel uses fuzzy covariance matrix in their distance metrics. In this work, a comparative study of these algorithms with different famous real world data sets, liver disorder and wine from the UCI repository is presented. The performance of the three algorithms is analyzed based on the clustering output criteria. The results were compared with the results obtained from the repository. The results showed that Gustafson–Kessel produces close results to Fuzzy c-Means. Further, the experimental results demonstrate that k-means outperforms the Fuzzy c-Means and Gustafson–Kessel algorithms. Thus the efficiency of k-means is better than that of Fuzzy c-Means and Gustafson–Kessel algorithms.

  8. fuzzy control technique fuzzy control technique applied to modified ...

    African Journals Online (AJOL)

    eobe

    ABSTRACT. In this paper, fuzzy control technique is applied to the modified mathematical model for malaria control presented ... be devised for rule-based systems that deals with continuous ... necessary to use fuzzy logic as it is not easy to follow a particular .... point movement and control is realized and designed. (e.g. α1 ...

  9. Almost Fuzzy Compactness in L-fuzzy Top ological Spaces

    Institute of Scientific and Technical Information of China (English)

    Li Hong-yan; Cui Wei

    2015-01-01

    In this paper, the notion of almost fuzzy compactness is defined in L-fuzzy topological spaces by means of inequality, where L is a completely distributive DeMorgan algebra. Its properties are discussed and many characterizations of it are presented.

  10. How to combine probabilistic and fuzzy uncertainties in fuzzy control

    Science.gov (United States)

    Nguyen, Hung T.; Kreinovich, Vladik YA.; Lea, Robert

    1991-01-01

    Fuzzy control is a methodology that translates natural-language rules, formulated by expert controllers, into the actual control strategy that can be implemented in an automated controller. In many cases, in addition to the experts' rules, additional statistical information about the system is known. It is explained how to use this additional information in fuzzy control methodology.

  11. Fuzzy Reasoning Methods by Choosing Different Fuzzy Counters and Analysis of Effect

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Different fuzzy reasoning methods were gave by choosing different fuzzy counters. This article generally introduced the basic structure of fuzzy controller,and compared and analysised the reasoning effect of fuzzy reasoning methods and the effect of computer simulating control basicly on different fuzzy counters.

  12. L-Fuzzy Semi-Preopen Operator in L-Fuzzy Topological Spaces

    CERN Document Server

    Ghareeb, A

    2010-01-01

    In this paper, we give the concept of L-fuzzy Semi-Preopen operator in L-fuzzy topological spaces, and use them to score L-fuzzy SP-cmpactnness in L-fuzzy topological spaces. We also study the relationship between L-fuzzy SP-compactness and SP-compactness in L-topological spaces.

  13. LA LÓGICA DIFUSA COMPENSATORIA / THE COMPENSATORY FUZZY LOGIC

    Directory of Open Access Journals (Sweden)

    Jesús Cejas-Montero

    2011-06-01

    Full Text Available

    La Lógica Difusa Compensatoria es un modelo lógico que permite la modelación simultánea de los procesos deductivos y de toma de decisiones. Sus características más importantes son: la flexibilidad, la tolerancia con la imprecisión, la capacidad para moldear problemas no-lineales y su fundamento en el lenguaje de sentido común. El artículo pretende llevar a la comunidad académico-empresarial las ideas fundamentales de la Lógica Difusa Compensatoria, ilustrándola en sus posibles campos de aplicación para lograr la competitividad de una organización.

    Abstract

    The Compensatory Fuzzy Logic is a logical model that allows the simultaneous modeling of the deductive and decision-making processes. The most important characteristics of Compensatory Fuzzy Logic are: the flexibility, the tolerance with the inaccuracy, the capacity to model no-lineal problems and its foundation in the language of common sense. The article seeks to bring the basic ideas of the Compensatory Fuzzy Logic to the academic–managerial community, illustrating it in its possible fields of application, in order to achieve the competitiveness of an organization.

  14. Fuzzy MCDM Based on Fuzzy Relational Degree Analysis

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    This paper presents a new fuzzy multiple criteria (both qualitative and quantitative) decision-making (MCDM) method based on fuzzy relational degree analysis. The concepts of fuzzy set theory are used to construct a weighted suitability decision matrix to evaluate the weighted suitability of different alternatives versus various criteria. The positive ideal solution and negative ideal solution are then obtained by using a method of ranking fuzzy numbers, and the fuzzy relational degrees of different alternatives versus positive ideal solution and negative ideal solution are calculated by using the proposed arithmetic. Finally, the relative relational degrees of various alternatives versus positive ideal solution are ranked to determine the best alternative. A numerical example is provided to illustrate the proposed method at the end of this paper.

  15. Evaluation of Fuzzy Pareto Solution Set by Using Fuzzy Relation Based Clustering Approach For Fuzzy Multi-Response Experiments

    Directory of Open Access Journals (Sweden)

    Özlem Türkşen

    2013-01-01

    Full Text Available The solution set of a multi-response experiment is characterized by Pareto solution set. In this paper, the multi-response experiment is dealed in a fuzzy framework. The responses and model parameters are considered as triangular fuzzy numbers which indicate the uncertainty of the data set. Fuzzy least square approach and fuzzy modified NSGA-II (FNSGA-II are used for modeling and optimization, respectively. The obtained fuzzy Pareto solution set is grouped by using fuzzy relational clustering approach. Therefore, it could be easier to choose the alternative solutions to make better decision. A fuzzy response valued real data set is used as an application.

  16. On Fuzzy Ideals of BL-Algebras

    Directory of Open Access Journals (Sweden)

    Biao Long Meng

    2014-01-01

    Full Text Available In this paper we investigate further properties of fuzzy ideals of a BL-algebra. The notions of fuzzy prime ideals, fuzzy irreducible ideals, and fuzzy Gödel ideals of a BL-algebra are introduced and their several properties are investigated. We give a procedure to generate a fuzzy ideal by a fuzzy set. We prove that every fuzzy irreducible ideal is a fuzzy prime ideal but a fuzzy prime ideal may not be a fuzzy irreducible ideal and prove that a fuzzy prime ideal ω is a fuzzy irreducible ideal if and only if ω0=1 and |Im⁡(ω|=2. We give the Krull-Stone representation theorem of fuzzy ideals in BL-algebras. Furthermore, we prove that the lattice of all fuzzy ideals of a BL-algebra is a complete distributive lattice. Finally, it is proved that every fuzzy Boolean ideal is a fuzzy Gödel ideal, but the converse implication is not true.

  17. (Fuzzy Ideals of BN-Algebras

    Directory of Open Access Journals (Sweden)

    Grzegorz Dymek

    2015-01-01

    set to be a fuzzy ideal are given. The relationships between ideals and fuzzy ideals of a BN-algebra are established. The homomorphic properties of fuzzy ideals of a BN-algebra are provided. Finally, characterizations of Noetherian BN-algebras and Artinian BN-algebras via fuzzy ideals are obtained.

  18. On Fuzzy Ideals of BL-Algebras

    Science.gov (United States)

    Xin, Xiao Long

    2014-01-01

    In this paper we investigate further properties of fuzzy ideals of a BL-algebra. The notions of fuzzy prime ideals, fuzzy irreducible ideals, and fuzzy Gödel ideals of a BL-algebra are introduced and their several properties are investigated. We give a procedure to generate a fuzzy ideal by a fuzzy set. We prove that every fuzzy irreducible ideal is a fuzzy prime ideal but a fuzzy prime ideal may not be a fuzzy irreducible ideal and prove that a fuzzy prime ideal ω is a fuzzy irreducible ideal if and only if ω(0) = 1 and |Im⁡(ω)| = 2. We give the Krull-Stone representation theorem of fuzzy ideals in BL-algebras. Furthermore, we prove that the lattice of all fuzzy ideals of a BL-algebra is a complete distributive lattice. Finally, it is proved that every fuzzy Boolean ideal is a fuzzy Gödel ideal, but the converse implication is not true. PMID:24892085

  19. FUZZY ALGEBRA IN TRIANGULAR NORM SYSTEM

    Institute of Scientific and Technical Information of China (English)

    宋晓秋; 潘志

    1994-01-01

    Triangular norm is a powerful tool in the theory research and application development of fuzzy sets. In this paper, using the triangular norm, we introduce some concepts such as fuzzy algebra, fuzzy o algebra and fuzzy monotone class, and discuss the relations among them, obtaining the following main conclusions.

  20. Set Theory and Arithmetic in Fuzzy Logic

    OpenAIRE

    Běhounek, L. (Libor); Haniková, Z. (Zuzana)

    2015-01-01

    This chapter offers a review of Petr Hájek’s contributions to first-order axiomatic theories in fuzzy logic (in particular, ZF-style fuzzy set theories, arithmetic with a fuzzy truth predicate, and fuzzy set theory with unrestricted comprehension schema). Generalizations of Hájek’s results in these areas to MTL as the background logic are presented and discussed.

  1. AN ALGORITHM OF TEST FOR FUZZY CODES

    Institute of Scientific and Technical Information of China (English)

    MoZhiwen; PenJiayin

    2001-01-01

    Abstract. How to verify that a given fuzzy set A∈F(X ) is a fuzzy code? In this paper, an al-gorithm of test has been introduced and studied with the example of test. The measure notionfor a fuzzy code and a precise formulation of fuzzy codes and words have been discussed.

  2. Fuzzy clustering with Minkowski distance

    NARCIS (Netherlands)

    P.J.F. Groenen (Patrick); U. Kaymak (Uzay); J.M. van Rosmalen (Joost)

    2006-01-01

    textabstractDistances in the well known fuzzy c-means algorithm of Bezdek (1973) are measured by the squared Euclidean distance. Other distances have been used as well in fuzzy clustering. For example, Jajuga (1991) proposed to use the L_1-distance and Bobrowski and Bezdek (1991) also used the L_inf

  3. Duality in Dynamic Fuzzy Systems

    OpenAIRE

    Yoshida, Yuji

    1995-01-01

    This paper shows the resolvent equation, the maximum principle and the co-balayage theorem for a dynamic fuzzy system. We define a dual system for the dynamic fuzzy system, and gives a duality for Snell's optimal stopping problem by the dual system.

  4. Efficient adaptive fuzzy control scheme

    NARCIS (Netherlands)

    Papp, Z.; Driessen, B.J.F.

    1995-01-01

    The paper presents an adaptive nonlinear (state-) feedback control structure, where the nonlinearities are implemented as smooth fuzzy mappings defined as rule sets. The fine tuning and adaption of the controller is realized by an indirect adaptive scheme, which modifies the parameters of the fuzzy

  5. Egalitarianism in Convex Fuzzy Games

    NARCIS (Netherlands)

    Brânzei, R.; Dimitrov, D.A.; Tijs, S.H.

    2002-01-01

    In this paper the egalitarian solution for convex cooperative fuzzy games is introduced.The classical Dutta-Ray algorithm for finding the constrained egalitarian solution for convex crisp games is adjusted to provide the egalitarian solution of a convex fuzzy game.This adjusted algorithm is also a f

  6. Representation of Fuzzy Symmetric Relations

    Science.gov (United States)

    1986-03-19

    Std Z39-18 REPRESENTATION OF FUZZY SYMMETRIC RELATIONS L. Valverde Dept. de Matematiques i Estadistica Universitat Politecnica de Catalunya Avda...REPRESENTATION OF FUZZY SYMMETRIC RELATIONS L. "Valverde* Dept. de Matematiques i Estadistica Universitat Politecnica de Catalunya Avda. Diagonal, 649

  7. Teaching Machines to Think Fuzzy

    Science.gov (United States)

    Technology Teacher, 2004

    2004-01-01

    Fuzzy logic programs for computers make them more human. Computers can then think through messy situations and make smart decisions. It makes computers able to control things the way people do. Fuzzy logic has been used to control subway trains, elevators, washing machines, microwave ovens, and cars. Pretty much all the human has to do is push one…

  8. FINDCLUS : Fuzzy INdividual Differences CLUStering

    NARCIS (Netherlands)

    Giordani, Paolo; Kiers, Henk A. L.

    ADditive CLUStering (ADCLUS) is a tool for overlapping clustering of two-way proximity matrices (objects x objects). In Simple Additive Fuzzy Clustering (SAFC), a variant of ADCLUS is introduced providing a fuzzy partition of the objects, that is the objects belong to the clusters with the so-called

  9. Fuzzy Logic Control ASIC Chip

    Institute of Scientific and Technical Information of China (English)

    沈理

    1997-01-01

    A fuzzy logic control VLSI chip,F100,for industry process real-time control has been designed and fabricated with 0.8μm CMOS technology.The chip has the features of simplicity,felexibility and generality.This paper presents the Fuzzy control inrerence method of the chip,its VLSI implementation,and testing esign consideration.

  10. Fuzzy linguistic model for interpolation

    Energy Technology Data Exchange (ETDEWEB)

    Abbasbandy, S. [Department of Mathematics, Science and Research Branch, Islamic Azad University, Tehran 14778 (Iran, Islamic Republic of); Department of Mathematics, Faculty of Science, Imam Khomeini International University, Qazvin 34194-288 (Iran, Islamic Republic of); Adabitabar Firozja, M. [Department of Mathematics, Science and Research Branch, Islamic Azad University, Tehran 14778 (Iran, Islamic Republic of)

    2007-10-15

    In this paper, a fuzzy method for interpolating of smooth curves was represented. We present a novel approach to interpolate real data by applying the universal approximation method. In proposed method, fuzzy linguistic model (FLM) applied as universal approximation for any nonlinear continuous function. Finally, we give some numerical examples and compare the proposed method with spline method.

  11. ON FUZZY h-IDEALS OF HEMIRINGS

    Institute of Scientific and Technical Information of China (English)

    Xueling MA; Jianming ZHAN

    2007-01-01

    The concept of quasi-coincidence of a fuzzy interval value in an interval valued fuzzy set is considered. In fact, this concept is a generalized concept of the quasi-coincidence of a fuzzy point in a fuzzy set. By using this new concept, the authors define the notion of interval valued (∈, ∈ Vq)-fuzzy h-ideals of hemirings and study their related properties. In addition, the authors also extend the concept of a fuzzy subgroup with thresholds to the concept of an interval valued fuzzy h-ideal with thresholds in hemirings.

  12. A new fuzzy edge detection algorithm

    Institute of Scientific and Technical Information of China (English)

    SunWei; XiaLiangzheng

    2003-01-01

    Based upon the maximum entropy theorem of information theory, a novel fuzzy approach for edge detection is presented. Firsdy, a definition of fuzzy partition entropy is proposed after introducing the concepts of fuzzy probability and fuzzy partition. The relation of the probability partition and the fuzzy c-partition of the image gradient are used in the algorithm. Secondly, based on the conditional probabilities and the fuzzy partition, the optimal thresholding is searched adaptively through the maximum fuzzy entropy principle, and then the edge image is obtained. Lastly, an edge-enhancing procedure is executed on the edge image. The experimental results show that the proposed approach performs well.

  13. Image matching navigation based on fuzzy information

    Institute of Scientific and Technical Information of China (English)

    田玉龙; 吴伟仁; 田金文; 柳健

    2003-01-01

    In conventional image matching methods, the image matching process is mostly based on image statistic information. One aspect neglected by all these methods is that there is much fuzzy information contained in these images. A new fuzzy matching algorithm based on fuzzy similarity for navigation is presented in this paper. Because the fuzzy theory is of the ability of making good description of the fuzzy information contained in images, the image matching method based on fuzzy similarity would look forward to producing good performance results. Experimental results using matching algorithm based on fuzzy information also demonstrate its reliability and practicability.

  14. On Intuitionistic Fuzzy Magnified Translation in Semigroups

    CERN Document Server

    Sardar, Sujit Kumar; Majumder, Samit Kumar

    2011-01-01

    The notion of intuitionistic fuzzy sets was introduced by Atanassov as a generalization of the notion of fuzzy sets. S.K Sardar and S.K. Majumder unified the idea of fuzzy translation and fuzzy multiplication of Vasantha Kandasamy to introduce the concept of fuzzy magnified translation in groups and semigroups. The purpose of this paper is to intuitionistically fuzzify(by using Atanassov's idea) the concept of fuzzy magnified translation in semigroups. Here among other results we obtain some characterization theorems of regular, intra-regular, left(right) regular semigroups in terms of intuitionistic fuzzy magnified translation.

  15. On the L-fuzzy topological spaces

    Energy Technology Data Exchange (ETDEWEB)

    Saadati, Reza [Islamic Azad University-Aiatollah Amoly Branch, Amol 678 (Iran, Islamic Republic of); Department of Mathematics and Computer Science, Amirkabir University of Technology, 424 Hafez Avenue, Tehran 15914 (Iran, Islamic Republic of)], E-mail: rsaadati@eml.cc

    2008-09-15

    As a natural generalization of fuzzy metric spaces due to George and Veeramani [George A, Veeramani P. On some result in fuzzy metric space. Fuzzy Sets Syst 1994;64:395-9], the present author defined the notion of L-fuzzy metric spaces. In this paper we prove some known results of metric spaces including Uniform continuity theorem and Ascoli-Arzela theorem for L-fuzzy metric spaces. We also prove that every L-fuzzy metric space has a countably locally finite basis and use this result to conclude that every L-fuzzy metric space is metrizable.

  16. Concept Approximation between Fuzzy Ontologies

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Fuzzy ontologies are efficient tools to handle fuzzy and uncertain knowledge on the semantic web; but there are heterogeneity problems when gaining interoperability among different fuzzy ontologies. This paper uses concept approximation between fuzzy ontologies based on instances to solve the heterogeneity problems. It firstly proposes an instance selection technology based on instance clustering and weighting to unify the fuzzy interpretation of different ontologies and reduce the number of instances to increase the efficiency. Then the paper resolves the problem of computing the approximations of concepts into the problem of computing the least upper approximations of atom concepts. It optimizes the search strategies by extending atom concept sets and defining the least upper bounds of concepts to reduce the searching space of the problem. An efficient algorithm for searching the least upper bounds of concept is given.

  17. Design of interpretable fuzzy systems

    CERN Document Server

    Cpałka, Krzysztof

    2017-01-01

    This book shows that the term “interpretability” goes far beyond the concept of readability of a fuzzy set and fuzzy rules. It focuses on novel and precise operators of aggregation, inference, and defuzzification leading to flexible Mamdani-type and logical-type systems that can achieve the required accuracy using a less complex rule base. The individual chapters describe various aspects of interpretability, including appropriate selection of the structure of a fuzzy system, focusing on improving the interpretability of fuzzy systems designed using both gradient-learning and evolutionary algorithms. It also demonstrates how to eliminate various system components, such as inputs, rules and fuzzy sets, whose reduction does not adversely affect system accuracy. It illustrates the performance of the developed algorithms and methods with commonly used benchmarks. The book provides valuable tools for possible applications in many fields including expert systems, automatic control and robotics.

  18. On Intuitionistic Fuzzy Sets Theory

    CERN Document Server

    Atanassov, Krassimir T

    2012-01-01

    This book aims to be a  comprehensive and accurate survey of state-of-art research on intuitionistic fuzzy sets theory and could be considered a continuation and extension of the author´s previous book on Intuitionistic Fuzzy Sets, published by Springer in 1999 (Atanassov, Krassimir T., Intuitionistic Fuzzy Sets, Studies in Fuzziness and soft computing, ISBN 978-3-7908-1228-2, 1999). Since the aforementioned  book has appeared, the research activity of the author within the area of intuitionistic fuzzy sets has been expanding into many directions. The results of the author´s most recent work covering the past 12 years as well as the newest general ideas and open problems in this field have been therefore collected in this new book.

  19. Modelling on fuzzy control systems

    Institute of Scientific and Technical Information of China (English)

    LI; Hongxing(李洪兴); WANG; Jiayin(王加银); MIAO; Zhihong(苗志宏)

    2002-01-01

    A kind of modelling method for fuzzy control systems is first proposed here, which is calledmodelling method based on fuzzy inference (MMFI). It should be regarded as the third modelling method thatis different from two well-known modelling methods, that is, the first modelling method, mechanism modellingmethod (MMM), and the second modelling method, system identification modelling method (SlMM). Thismethod can, based on the interpolation mechanism on fuzzy logic system, transfer a group of fuzzy inferencerules describing a practice system into a kind of nonlinear differential equation with variable coefficients, calledHX equations, so that the mathematical model of the system can be obtained. This means that we solve thedifficult problem of how to get a model represented as differential equations on a complicated or fuzzy controlsystem.

  20. Fuzzy control in environmental engineering

    CERN Document Server

    Chmielowski, Wojciech Z

    2016-01-01

    This book is intended for engineers, technicians and people who plan to use fuzzy control in more or less developed and advanced control systems for manufacturing processes, or directly for executive equipment. Assuming that the reader possesses elementary knowledge regarding fuzzy sets and fuzzy control, by way of a reminder, the first parts of the book contain a reminder of the theoretical foundations as well as a description of the tools to be found in the Matlab/Simulink environment in the form of a toolbox. The major part of the book presents applications for fuzzy controllers in control systems for various manufacturing and engineering processes. It presents seven processes and problems which have been programmed using fuzzy controllers. The issues discussed concern the field of Environmental Engineering. Examples are the control of a flood wave passing through a hypothetical, and then the real Dobczyce reservoir in the Raba River, which is located in the upper Vistula River basin in Southern Poland, th...

  1. Data fusion based on fuzzy measures

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Choquet integral based on fuzzy measure is a very popular data fusion approach. A major problem in applying the Choquet integral is how to determine a large number of fuzzy measures as the number of attributes increases. The λ-fuzzy measure proposed by Sugeno is a powerful method to resolve this problem. However, the modeling ability of the λ-fuzzy measure is too limited to satisfy actual requirements. In this paper, an extended λ-fuzzy measure is proposed using Shapley value index, and the limitation of the λ-fuzzy measure is significantly overcome under little additional computational loads. The extended fuzzy measure has stronger modeling power than the λ-fuzzy measure, straightforwardly representing interaction among attributes. We apply the extended fuzzy measure to an artificial data set and a real dataset in an iron-steel plant. The results verify the usefulness of the extended fuzzy measure compared with other main existing methods.

  2. Impacto da terapia cognitivo-comportamental nos fatores neurobiológicos relacionados à resiliência

    Directory of Open Access Journals (Sweden)

    Carlos Eduardo Norte

    2011-01-01

    Full Text Available A resiliência, como uma variável de desfecho, tem sido largamente negligenciada no campo terapêutico. Nosso objetivo foi investigar os efeitos da terapia cognitivo-comportamental (TCC nos marcadores neurobiológicos de resiliência em pacientes com transtorno de estresse pós-traumático (TEPT. Nesta pesquisa experimental de caso único, foram acessadas variáveis fisiológicas (frequência cardíaca, frequência respiratória, tônus vagal cardíaco, balanço simpático e condutância da pele e neuroendócrinas (cortisol e de-hidroepiandrosterona - DHEA e medidas psicométricas de autorrelato (afeto negativo, resiliência, sintomas de TEPT, depressão, ansiedade e apoio social. Foram medidas as respostas fisiológicas, neuroendócrinas e psicométricas em repouso antes e após quatro meses de TCC. O paciente era um homem de 45 anos que sofreu dois assaltos com arma de fogo e não respondeu adequadamente ao tratamento farmacológico com paroxetina. A TCC levou a uma redução da frequência cardíaca, frequência respiratória, balanço simpático, condutância da pele e cortisol, bem como a um aumento no tônus vagal e DHEA. Além disso, a TCC promoveu redução na pontuação dos sintomas de TEPT, depressão, ansiedade e afeto negativo e aumento da pontuação de resiliência e apoio social. Nossos dados sugerem que a TCC aumenta os fatores relacionados à resiliência (DHEA, tônus vagal, autorrelato de resiliência e apoio social. Isso não é somente "antipatológico", mas também pode ser considerado "pró-bem-estar". Adicionalmente, nossos resultados mostram a relevância da investigação dos efeitos do tratamento psicológico em múltiplos sistemas neurobiológicos no mesmo paciente com TEPT, visando desvendar as bases neurobiológicas dos fatores de resiliência.

  3. On Fuzzy Improper Integral and Its Application for Fuzzy Partial Differential Equations

    OpenAIRE

    ElHassan ElJaoui; Said Melliani

    2016-01-01

    We establish some important results about improper fuzzy Riemann integrals; we prove some properties of fuzzy Laplace transforms, which we apply for solving some fuzzy linear partial differential equations of first order, under generalized Hukuhara differentiability.

  4. On Fuzzy Improper Integral and Its Application for Fuzzy Partial Differential Equations

    Directory of Open Access Journals (Sweden)

    ElHassan ElJaoui

    2016-01-01

    Full Text Available We establish some important results about improper fuzzy Riemann integrals; we prove some properties of fuzzy Laplace transforms, which we apply for solving some fuzzy linear partial differential equations of first order, under generalized Hukuhara differentiability.

  5. Web Fuzzy Clustering and a Case Study

    Institute of Scientific and Technical Information of China (English)

    LIU Mao-fu; HE Jing; HE Yan-xiang; HU Hui-jun

    2004-01-01

    We combine the web usage mining and fuzzy clustering and give the concept of web fuzzy clustering, and then put forward the web fuzzy clustering processing model which is discussed in detail. Web fuzzy clustering can be used in the web users clustering and web pages clustering. In the end, a case study is given and the result has proved the feasibility of using web fuzzy clustering in web pages clustering.

  6. COMO EVOLUEM OS MODELOS MENTAIS

    Directory of Open Access Journals (Sweden)

    A. Tarciso Borges

    Full Text Available Resumo: Após revisão da literatura onde se define o conceito de modelo mental, apresentamos resultados de estudo sobre os modelos mentais de eletricidade, magnetismo e eletromagnetismo de seis grupos de indivíduos. Entre estudantes e profissionais com experiências de escolarização diversificadas, foram entrevistadas 56 pessoas. As entrevistas ocorreram enquanto se realizaram experimentos com imãs, eletroímãs e circuitos elétricos simples. Foram identificados quatro modelos de eletricidade, cinco de magnetismo e três para explicar o magnetismo no eletroímã. Apresentamos os dados desse estudo centrando atenção na evolução dos modelos identificados. Em nossa análise, destacamos quais aspectos dos modelos sofrem mudanças significativas à medida que os sujeitos ganham maior compreensão conceituai e experiência com os fenômenos estudados.

  7. Improvement of Fuzzy Image Contrast Enhancement Using Simulated Ergodic Fuzzy Markov Chains

    Directory of Open Access Journals (Sweden)

    Behrouz Fathi-Vajargah

    2014-01-01

    Full Text Available This paper presents a novel fuzzy enhancement technique using simulated ergodic fuzzy Markov chains for low contrast brain magnetic resonance imaging (MRI. The fuzzy image contrast enhancement is proposed by weighted fuzzy expected value. The membership values are then modified to enhance the image using ergodic fuzzy Markov chains. The qualitative performance of the proposed method is compared to another method in which ergodic fuzzy Markov chains are not considered. The proposed method produces better quality image.

  8. Fuzzy portfolio model with fuzzy-input return rates and fuzzy-output proportions

    Science.gov (United States)

    Tsaur, Ruey-Chyn

    2015-02-01

    In the finance market, a short-term investment strategy is usually applied in portfolio selection in order to reduce investment risk; however, the economy is uncertain and the investment period is short. Further, an investor has incomplete information for selecting a portfolio with crisp proportions for each chosen security. In this paper we present a new method of constructing fuzzy portfolio model for the parameters of fuzzy-input return rates and fuzzy-output proportions, based on possibilistic mean-standard deviation models. Furthermore, we consider both excess or shortage of investment in different economic periods by using fuzzy constraint for the sum of the fuzzy proportions, and we also refer to risks of securities investment and vagueness of incomplete information during the period of depression economics for the portfolio selection. Finally, we present a numerical example of a portfolio selection problem to illustrate the proposed model and a sensitivity analysis is realised based on the results.

  9. El modelo de Florence Nightingale

    OpenAIRE

    Fernández Ferrín, Carmen; Gusiñé, Francesca; Pardo Fernández, Andrea; Sales Pastor, Dolors

    1986-01-01

    Los grandes avances que se han realizado en el campo técnico y científico en los últimos años, y los cambios consiguientes de los valores sociales y culturales, no han invalidado el modelo de enfermería que elaboró Florence Nightingale hace casi un siglo. Sus escritos y pensamientos mantienen hoy su máxima vigencia. Quizá sea ésta la razón que la convirtiera en leyenda en su tiempo. Por todo ello, hoy hemos querido profundizar algo más en su modelo y conocer algunos rasgos importantes de su v...

  10. Type-2 fuzzy granular models

    CERN Document Server

    Sanchez, Mauricio A; Castro, Juan R

    2017-01-01

    In this book, a series of granular algorithms are proposed. A nature inspired granular algorithm based on Newtonian gravitational forces is proposed. A series of methods for the formation of higher-type information granules represented by Interval Type-2 Fuzzy Sets are also shown, via multiple approaches, such as Coefficient of Variation, principle of justifiable granularity, uncertainty-based information concept, and numerical evidence based. And a fuzzy granular application comparison is given as to demonstrate the differences in how uncertainty affects the performance of fuzzy information granules.

  11. Strong sum distance in fuzzy graphs.

    Science.gov (United States)

    Tom, Mini; Sunitha, Muraleedharan Shetty

    2015-01-01

    In this paper the idea of strong sum distance which is a metric, in a fuzzy graph is introduced. Based on this metric the concepts of eccentricity, radius, diameter, center and self centered fuzzy graphs are studied. Some properties of eccentric nodes, peripheral nodes and central nodes are obtained. A characterisation of self centered complete fuzzy graph is obtained and conditions under which a fuzzy cycle is self centered are established. We have proved that based on this metric, an eccentric node of a fuzzy tree G is a fuzzy end node of G and a node is an eccentric node of a fuzzy tree if and only if it is a peripheral node of G and the center of a fuzzy tree consists of either one or two neighboring nodes. The concepts of boundary nodes and interior nodes in a fuzzy graph based on strong sum distance are introduced. Some properties of boundary nodes, interior nodes and complete nodes are studied.

  12. Implementation of Steiner point of fuzzy set.

    Science.gov (United States)

    Liang, Jiuzhen; Wang, Dejiang

    2014-01-01

    This paper deals with the implementation of Steiner point of fuzzy set. Some definitions and properties of Steiner point are investigated and extended to fuzzy set. This paper focuses on establishing efficient methods to compute Steiner point of fuzzy set. Two strategies of computing Steiner point of fuzzy set are proposed. One is called linear combination of Steiner points computed by a series of crisp α-cut sets of the fuzzy set. The other is an approximate method, which is trying to find the optimal α-cut set approaching the fuzzy set. Stability analysis of Steiner point of fuzzy set is also studied. Some experiments on image processing are given, in which the two methods are applied for implementing Steiner point of fuzzy image, and both strategies show their own advantages in computing Steiner point of fuzzy set.

  13. Fuzzy Clustering Methods and their Application to Fuzzy Modeling

    DEFF Research Database (Denmark)

    Kroszynski, Uri; Zhou, Jianjun

    1999-01-01

    Fuzzy modeling techniques based upon the analysis of measured input/output data sets result in a set of rules that allow to predict system outputs from given inputs. Fuzzy clustering methods for system modeling and identification result in relatively small rule-bases, allowing fast, yet accurate...... prediction of outputs. This article presents an overview of some of the most popular clustering methods, namely Fuzzy Cluster-Means (FCM) and its generalizations to Fuzzy C-Lines and Elliptotypes. The algorithms for computing cluster centers and principal directions from a training data-set are described....... A method to obtain an optimized number of clusters is outlined. Based upon the cluster's characteristics, a behavioural model is formulated in terms of a rule-base and an inference engine. The article reviews several variants for the model formulation. Some limitations of the methods are listed...

  14. UNDERSTANDING OF FUZZY OPTIMIZATION:THEORIES AND METHODS

    Institute of Scientific and Technical Information of China (English)

    TANG Jiafu; WANG Dingwei; Richard Y K FUNG; Kai-Leung Yung

    2004-01-01

    A brief summary on and comprehensive understanding of fuzzy optimizationis presentedThis summary is made on aspects of fuzzy modelling and fuzzy optimization,classification and formulation for the fuzzy optimization problems, models and methods.The importance of interpretation of the problem and formulation of the optimal solutionin fuzzy sense are emphasized in the summary of the fuzzy optimization.

  15. Majorizational Choosing of SeveralDifferent Fuzzy Counter Operator

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Different fuzzy reasoning methods were made by choosing different fuzzy operater. This article generally introduced the basic structure of fuzzy controller ,and gave several different fuzzy controllers ,and compared and analyzed different fuzzy counters in theory and computer simulating control and realized majorizational choosing of several fuzzy counters.

  16. Fuzzy random variables — I. definitions and theorems

    NARCIS (Netherlands)

    Kwakernaak, H.

    1978-01-01

    Fuzziness is discussed in the context of multivalued logic, and a corresponding view of fuzzy sets is given. Fuzzy random variables are introduced as random variables whose values are not real but fuzzy numbers, and subsequently redefined as a particular kind of fuzzy set. Expectations of fuzzy

  17. Fuzzy random variables — I. definitions and theorems

    NARCIS (Netherlands)

    Kwakernaak, Huibert

    1978-01-01

    Fuzziness is discussed in the context of multivalued logic, and a corresponding view of fuzzy sets is given. Fuzzy random variables are introduced as random variables whose values are not real but fuzzy numbers, and subsequently redefined as a particular kind of fuzzy set. Expectations of fuzzy rand

  18. A Bibliography on Fuzzy Automata, Grammars and Lanuages

    NARCIS (Netherlands)

    Asveld, P.R.J.

    1996-01-01

    This bibliography contains references to papers on fuzzy formal languages, the generation of fuzzy languages by means of fuzzy grammars, the recognition of fuzzy languages by fuzzy automata and machines, as well as some applications of fuzzy set theory to syntactic pattern recognition, linguistics a

  19. A Bibliography on Fuzzy Automata, Grammars and Lanuages

    NARCIS (Netherlands)

    Asveld, Peter R.J.

    1995-01-01

    This bibliography contains references to papers on fuzzy formal languages, the generation of fuzzy languages by means of fuzzy grammars, the recognition of fuzzy languages by fuzzy automata and machines, as well as some applications of fuzzy set theory to syntactic pattern recognition, linguistics a

  20. Fuzzy random variables — I. definitions and theorems

    NARCIS (Netherlands)

    Kwakernaak, H.

    1978-01-01

    Fuzziness is discussed in the context of multivalued logic, and a corresponding view of fuzzy sets is given. Fuzzy random variables are introduced as random variables whose values are not real but fuzzy numbers, and subsequently redefined as a particular kind of fuzzy set. Expectations of fuzzy rand

  1. Fuzzy Content-Based Retrieval in Image Databases.

    Science.gov (United States)

    Wu, Jian Kang; Narasimhalu, A. Desai

    1998-01-01

    Proposes a fuzzy-image database model and a concept of fuzzy space; describes fuzzy-query processing in fuzzy space and fuzzy indexing on complete fuzzy vectors; and uses an example image database, the computer-aided facial-image inference and retrieval system (CAFIIR), for explanation throughout. (Author/LRW)

  2. 13. workshop fuzzy systems. Proceedings; 13. Workshop Fuzzy Systeme. Beitraege

    Energy Technology Data Exchange (ETDEWEB)

    Mikut, R.; Reischl, M. (eds.)

    2003-11-01

    This volume contains the papers presented at the 13th workshop on fuzzy systems of TC 5.2.2 'Fuzzy Control' of the VDI/VDE-Gesellschaft fuer Mess- und Automatisierungstechnik (GMA) and the TG 'Fuzzy Systems and Soft Computing' of the Gesellschaft fuer Informatik (GI), which took place at Dortmund on November 19-21, 2003. New methods and applications of fuzzy logic, artificial neuronal nets and evolutionary algorithms were presented. The focus was on automation, e.g. in chemical engineering, energy engineering, motor car engineering, robotics and medical engineering. Other applications, e.g. data mining for technical and non-technical applications, were gone into as well. [German] Dieser Tagungsband enthaelt die Beitraege des 13. Workshops ''Fuzzy System'' des Fachausschusses 5.22 ''Fuzzy Control'' der VDI/VDE-Gesellschaft fuer Mess- und Automatisierungstechnik (GMA) und der Fachgruppe ''Fuzzy-Systeme und Soft-Computing'' der Gesellschaft fuer Informatik (GI), der vom 19.-21. November 2003 im Haus Bommerholz, Dortmund, stattfindet. Der jaehrliche Workshop unseres Fachausschusses bietet ein Forum zur Diskussion neuer methodischer Ansaetze und industrieller Anwendungen auf dem Gebiet der Fuzzy-Logik und in angrenzenden Gebieten wie Kuenstlichen Neuronalen Netzen und Evolutionaeren Algorithmen. Besondere Schwerpunkte sind automatisierungstechnische Anwendungen, z.B. in der Verfahrenstechnik, Energietechnik, Kfz-Technik, Robotik und Medizintechnik, aber auch Loesungen in anderen Problemgebieten (z.B. Data Mining fuer technische und nichttechnische Anwendungen) sind von Interesse. (orig.)

  3. FuzzySTAR: Fuzzy set theory of axiomatic design review

    OpenAIRE

    Huang, GQ; Jiang, Z

    2002-01-01

    Product development involves multiple phases. Design review (DR) is an essential activity formally conducted to ensure a smooth transition from one phase to another. Such a formal DR is usually a multicriteria decision problem, involving multiple disciplines. This paper proposes a systematic framework for DR using fuzzy set theory. This fuzzy approach to DR is considered particularly relevant for several reasons. First, information available at early design phases is often incomplete and impr...

  4. Trastornos del sueño, salud y calidad de vida: Una perspectiva desde la medicina comportamental del sueño

    OpenAIRE

    Sergio Tobón; Stefano Vinaccia Alpi; Andrés Fernando Franco; Marín Agudelo, Hernán Andrés; Bonifacio Sandín

    2008-01-01

    Se describe la relación existente entre los trastornos de sueño, salud y calidad de vida desde la perspectiva de la medicina conductual del sueño, basado en evidencias empíricas, demostrándose la baja calidad de vida en función con los síntomas en cada uno de los trastornos del sueño. El artículo comprende una descripción de la medicina comportamental del sueño, la relación entre calidad de vida y sueño, patrones de sueño y salud, sueño y enfermedad crónica, insomnio, síndrome de piernas inqu...

  5. Trastornos del sueño, salud y calidad de vida: Una perspectiva desde la medicina comportamental del sueño

    Directory of Open Access Journals (Sweden)

    Sergio Tobón

    2008-09-01

    Full Text Available Se describe la relación existente entre los trastornos de sueño, salud y calidad de vida desde la perspectiva de la medicina conductual del sueño, basado en evidencias empíricas, demostrándose la baja calidad de vida en función con los síntomas en cada uno de los trastornos del sueño. El artículo comprende una descripción de la medicina comportamental del sueño, la relación entre calidad de vida y sueño, patrones de sueño y salud, sueño y enfermedad crónica, insomnio, síndrome de piernas inquietas, calidad de vida y salud, somnolencia excesiva diurna, calidad de vida y salud, y parasomnias y salud.

  6. Fuzzy ABC: Modelando a Incerteza na Alocação dos Custos AmbientaisFuzzy ABC: Modeling the Uncertainty in Environmental Cost AllocationFuzzy ABC: Modelando la Incertidumbre en la Alocation de los Costos Ambientales

    Directory of Open Access Journals (Sweden)

    BORBA, José Alonso

    2007-05-01

    Full Text Available RESUMOEm muitos casos, prevenir a poluição e a destruição do meio ambiente é menos oneroso do que remediar esses danos. Nesse contexto, a alocação de custos ambientais aos produtos permite uma melhor visualização e análise da rentabilidade dos produtos. Entretanto, a alocação dos custos ambientais aos produtos envolve informações estimadas e assume uma linearidade entre o consumo das atividades e os produtos, que muitas vezes não existe. Para contemplar essa não linearidade, esta pesquisa apresenta uma metodologia baseada na utilização da lógica fuzzy para modelar a incerteza e a subjetividade, inerentes ao processo de alocação dos custos ambientais. Para isso, além de um estudo de caso desenvolvido por Hansen e Mowen (2001, p. 584, que foi utilizado como referência, outras variáveis foram incorporadas. Em seguida, uma proposta de solução, que utiliza fundamentos da teoria dos conjuntos fuzzy, ou nebulosos, foi desenvolvida com o objetivo de contemplar a subjetividade e a incerteza na alocação dos custos ambientais. Para simular esse modelo, foram estabelecidas 126 regras de inferência. A etapa final da elaboração do modelo nebuloso consistiu na fuzzificação e defuzzificação dos dados existentes e dos novos direcionadores gerados por intermédio da utilização do software FuzzyTECH®. Os resultados encontrados no modelo proposto - FuzzyABC (Fuzzy Activity Based Costing - evidenciam que a lógica fuzzy pode ser utilizada como uma importante ferramenta para tratar da ambigüidade e da incerteza, inerentes ao processo de alocação dos custos ambientais.ABSTRACTIn many cases, preventing pollution and environmental destruction is cheaper than remedying these damages. In this sense, environmental cost allocation enables a better visualization and analysis of a product’s profitability. However, the environmental allocation process involves estimated information and assumes linearity between activity consumption

  7. Rough Fuzzy Relation on Two Universal Sets

    Directory of Open Access Journals (Sweden)

    Xuan Thao Nguyen

    2014-03-01

    Full Text Available Fuzzy set theory was introduced by L.A. Zadeh in 1965. Immediately, it has many applications in practice and in building databases, one of which is the construction of a fuzzy relational database based on similar relationship. The study of cases of fuzzy relations in different environments will help us understand its applications. In this paper, the rough fuzzy relation on Cartesian product of two universe sets is defined, and then the algebraic properties of them, such as the max, min, and composition of two rough fuzzy relations are examined. Finally, reflexive, α-reflexive, symmetric and transitive rough fuzzy relations on two universe sets are also defined.

  8. 模糊Prime元%Fuzzy Prime Elements

    Institute of Scientific and Technical Information of China (English)

    饶三平

    2012-01-01

    基于完备剩余格,本文在模糊完备格中,引入模糊Prime元概念.给出了模糊Prime元的等价刻画,证明了所有的模糊Prime元构成的模糊集是模糊完全分配格.%Based on complete residuated lattices, the concept of fuzzy Prime elements in fuzzy complete lattices is given, then the equivalent characterization of fuzzy Prime elements is obtained. We also prove that the fuzzy subsets of fuzzy Prime elements is a fuzzy completely distributice lattice.

  9. FUZZY EPQ INVENTORY MODELS WITH BACKORDER

    Institute of Scientific and Technical Information of China (English)

    Xiaobin WANG; Wansheng TANG

    2009-01-01

    This paper considers the economic production quantity (EPQ) problem with backorder in which the setup cost, the holding cost and the backorder cost are characterized as fuzzy variables, respectively. Following expected value criterion and chance constrained criterion, a fuzzy expected value model (EVM) and a chance constrained programming (CCP) model are constructed. Then fuzzy simulations are employed to estimate the expected value of fuzzy variable and α-level minimal average cost. In order to solve the CCP model, a particle swarm optimization (PSO) algorithm based on the fuzzy simulation is designed. Finally, the effectiveness of PSO algorithm based on the fuzzy simulation is illustrated by a numerical example.

  10. Adaptive Fuzzy Control for CVT Vehicle

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    On the simple continuously variable transmission (CVT) driveline model, the design of adaptive fuzzy control system for CVT vehicle is presented. The adaptive fuzzy control system consists of a scaling factor self-tuning fuzzy-PI throttle controller, and a hybrid fuzzy-PID CVT ratio and brake controller. The presented adaptive fuzzy control strategy is vehicle model independent, which depends only on the instantaneous vehicle states, but does not depend on vehicle parameters. So it has good robustness against uncertain vehicle parameters and exogenous load disturbance. Simulation results show that the proposed adaptive fuzzy strategy has good adaptability and practicality value.

  11. Type-2 fuzzy fractional derivatives

    Science.gov (United States)

    Mazandarani, Mehran; Najariyan, Marzieh

    2014-07-01

    In this paper, we introduce two definitions of the differentiability of type-2 fuzzy number-valued functions of fractional order. The definitions are in the sense of Riemann-Liouville and Caputo derivative of order β ɛ (0, 1), and based on type-2 Hukuhara difference and H2-differentiability. The existence and uniqueness of the solutions of type-2 fuzzy fractional differential equations (T2FFDEs) under Caputo type-2 fuzzy fractional derivative and the definition of Laplace transform of type-2 fuzzy number-valued functions are also given. Moreover, the approximate solution to T2FFDE by a Predictor-Evaluate-Corrector-Evaluate (PECE) method is presented. Finally, the approximate solutions of two examples of linear and nonlinear T2FFDEs are obtained using the PECE method, and some cases of T2FFDEs applications in some sciences are presented.

  12. Intuitionistic fuzzy hierarchical clustering algorithms

    Institute of Scientific and Technical Information of China (English)

    Xu Zeshui

    2009-01-01

    Intuitionistic fuzzy set (IFS) is a set of 2-tuple arguments, each of which is characterized by a mem-bership degree and a nonmembership degree. The generalized form of IFS is interval-valued intuitionistic fuzzy set (IVIFS), whose components are intervals rather than exact numbers. IFSs and IVIFSs have been found to be very useful to describe vagueness and uncertainty. However, it seems that little attention has been focused on the clus-tering analysis of IFSs and IVIFSs. An intuitionistic fuzzy hierarchical algorithm is introduced for clustering IFSs, which is based on the traditional hierarchical clustering procedure, the intuitionistic fuzzy aggregation operator, and the basic distance measures between IFSs: the Hamming distance, normalized Hamming, weighted Hamming, the Euclidean distance, the normalized Euclidean distance, and the weighted Euclidean distance. Subsequently, the algorithm is extended for clustering IVIFSs. Finally the algorithm and its extended form are applied to the classifications of building materials and enterprises respectively.

  13. Fuzzy indicators for customer retention

    National Research Council Canada - National Science Library

    Valenzuela-Fernández, Leslier; Nicolas, Carolina; Gil-Lafuente, Jaime; Merigó, José M

    2016-01-01

    .... Nevertheless, one cannot ignore the existence of a gap on how to measure this relationship. Following this idea, this study proposes six fuzzy key performance indicators that aims to measure customer retention and loyalty of the portfolio...

  14. Avaliação audiológica comportamental e eletrofisiológica no transtorno do espectro do autismo

    Directory of Open Access Journals (Sweden)

    Ana Carla Leite Romero

    2014-06-01

    Full Text Available Objetivo descrever os achados das avaliações audiológicas comportamentais e eletrofisiológicas de pacientes com diagnóstico de transtorno do espectro do autismo. Métodos estudo descritivo, de coorte contemporânea com corte transversal, composto por nove pacientes com diagnóstico de transtorno do espectro do autismo, submetidos a avaliação comportamental e eletrofisiológica da audição. Os resultados foram analisados por meio de estatística descritiva. Resultados todos os pacientes avaliados apresentaram limiares audiométricos dentro dos padrões de normalidade. Oito pacientes apresentaram curva timpanométrica do tipo A, e um do tipo C. Observou-se emissões otoacústicas por produto de distorção presentes em todos os pacientes avaliados. Os resultados do potencial evocado auditivo de tronco encefálico demonstraram integridade das vias auditiva. Conclusão a população estudada apresentou resultados compatíveis com a normalidade tanto na avaliação comportamental como na avaliação eletrofisiológica da audição. Pelo fato de não haver consenso, na literatura especializada, quanto aos achados audiológicos nesta população, principalmente no que se refere à avaliação eletrofisiológica do processamento auditivo, sugere-se a realização de novos estudos.

  15. Choking phobia: full remission following behavior therapy Fobia de deglutição: remissão com terapia comportamental

    Directory of Open Access Journals (Sweden)

    Silvia Scemes

    2009-09-01

    Full Text Available OBJECTIVE: A phobic behavior pattern is learned by classical and operant conditioning mechanisms. The present article reviews the main determinants of choking phobia etiology and describes the behavior therapy of an adult patient. METHOD: Psychoeducation, functional analysis, and graded exposure to aversive stimuli were used to treat the patient, after extensive psychiatric and psychological assessment. Ingesta and anxiety levels were measured along treatment and at follow-up. RESULTS: A multiple assessment baseline design was used to demonstrate the complete remission of symptoms after seven sessions, each of them exposing the patient to a different group of foods. CONCLUSION: Psychoeducation and exposure were critical components of a successful choking phobia treatment.OBJETIVO: O padrão comportamental da fobia é adquirido com base no condicionamento clássico e mecanismos operantes de aprendizagem. Este artigo faz uma revisão dos principais determinantes da etiologia da fobia de deglutição e descreve o tratamento da terapia comportamental em uma paciente adulta. MÉTODO: Foram usadas psicoeducação, análise funcional e gradativa exposição a estímulos aversivos no tratamento da paciente, depois de uma extensiva avaliação psiquiátrica e psicológica. Níveis de ingesta e ansiedade foram medidos ao longo de todo o tratamento e no follow-up. RESULTADOS: Para demonstrar a completa remissão dos sintomas, após sete sessões de exposição a diferentes grupos de alimentos foi usado um delineamento de linha de base de avaliações múltiplas. CONCLUSÃO: Terapia de exposição e psicoeducação foram componentes que contribuíram de modo crítico para a obtenção de resultados positivos ao tratamento.

  16. Subtipo respiratório versus não respiratório no transtorno de pânico com agorafobia: avaliação com terapia cognitivo-comportamental Respiratory versus non respiratory subtypes of panic disorder with agoraphobia: cognitive behavioral therapy assessment

    Directory of Open Access Journals (Sweden)

    Anna Lucia Spear King

    2012-01-01

    Full Text Available OBJETIVO: verificar a resposta dos pacientes com transtorno de pânico com agorafobia à modelo proposto de terapia cognitivo-comportamental (TCC nos dois subtipos respiratórios de transtorno de pânico: o subtipo respiratório (SR e subtipo não respiratório (SNR Amostra randomizada por sorteio com 50 pacientes diagnosticados segundo o Manual Diagnóstico e Estatístico dos Transtornos Mentais. A medicação: antidepressivos tricíclicos ou inibidores seletivos de recaptação da serotonina. Setenta e sete ponto seis porcento da amostra de pacientes de ambos os grupos apresentaram o SR e 22,4 % o SNR. Os pacientes do SR, responderam satisfatoriamente ao tratamento com técnicas da TCC, reduzindo ansiedade, sintomas respiratórios e os ataques de pânico. Os pacientes do SR melhoraram, segundo a escala de avaliação global do funcionamento, de 55,8 para 70,9 em comparação com o SNR.The objective of the present study was to verify the response of patients with panic disorder (agoraphobia to existing cognitive-behavior therapy models (CBT of two respiratory subtypes of panic disorder (PD: respiratory subtype (RS and non respiratory subtype (NRS. We randomly selected a sample of 50 patients diagnosed according to the Diagnostic and Statistical Manual of Mental Disorders. The medication used was tricycle or selective serotonin reuptake inhibitor antidepressants. Seventy-seven point six percent of the patients from both groups showed RS and 22.4% the NRS. The RS patients responded satisfactorily to the treatment with techniques of CBT decreasing anxiety, breathing symptoms and panic attacks. According to the global functioning assessment scale, RS patients improved from 55.8 to 70.9 in comparison with NRS ones.

  17. Obesidade: um problema comportamental?

    Directory of Open Access Journals (Sweden)

    Jacira A. da Cunha

    Full Text Available Com o objetivo de comparar os efeitos de alguns componentes de programas comportamentais para redução do peso corporal e a manutenção do peso perdido, foram selecionados 19 sujeitos: dois homens e 17 mulheres. Foram designados aleatoriamente para uma das quatro condições experimentais: Peso e Registro Público mais dicas de Auto-Controle (PRP + DA; Peso e Registro Público mais Registro de Alimentação (PRP + RA; Peso e Registro Público (PRP e apenas Peso (P; Grupo de Controle. Os sujeitos fizeram um contrato de perder um quilo por semana. Com relação a este objetivo, durante o programa e follow-up, o desempenho do Grupo (A PRP + DA foi de 89,5%; do Grupo (B PRP + RA foi de 92,3%; do Grupo (C PRP foi de 60,0% e do Grupo (D P, foi de 42,3%. Foi encontrada uma diferença significativa entre as condições experimentais e o Grupo (D P, e uma variabilidade acentuada entre os sujeitos. Há evidência de que os sujeitos adquiriram um grau relativamente alto de auto-controle no comportamento de comer; o peso perdido foi mantido durante o follow-up de quatro meses. O experimento mostrou que certos componentes são mais eficientes com determinados sujeitos. E há sujeitos que perdem peso em- condições mínimas, como as condições do Grupo de Controle.

  18. Semi-Hausdorff Fuzzy Filters

    Directory of Open Access Journals (Sweden)

    V. Lakshmana Gomathi Nayagam

    2007-01-01

    Full Text Available The notion of fuzzy filters was studied by Vicente and Aranguren (1988, Lowen (1979, and Ramakrishnan and Nayagam (2002. The notion of fuzzily compactness was introduced and studied by Ramakrishnan and Nayagam (2002. In this paper, an equivalent condition of fuzzily compactness is studied and a new notion of semi-Hausdorffness on fuzzy filters, which cannot be defined in crisp theory of filters, is introduced and studied.

  19. FUZZY LOGIC IN LEGAL EDUCATION

    Directory of Open Access Journals (Sweden)

    Z. Gonul BALKIR

    2011-04-01

    Full Text Available The necessity of examination of every case within its peculiar conditions in social sciences requires different approaches complying with the spirit and nature of social sciences. Multiple realities require different and various perceptual interpretations. In modern world and social sciences, interpretation of perception of valued and multi-valued have been started to be understood by the principles of fuzziness and fuzzy logic. Having the verbally expressible degrees of truthness such as true, very true, rather true, etc. fuzzy logic provides the opportunity for the interpretation of especially complex and rather vague set of information by flexibility or equivalence of the variables’ of fuzzy limitations. The methods and principles of fuzzy logic can be benefited in examination of the methodological problems of law, especially in the applications of filling the legal loopholes arising from the ambiguities and interpretation problems in order to understand the legal rules in a more comprehensible and applicable way and the efficiency of legal implications. On the other hand, fuzzy logic can be used as a technical legal method in legal education and especially in legal case studies and legal practice applications in order to provide the perception of law as a value and the more comprehensive and more quality perception and interpretation of value of justice, which is the core value of law. In the perception of what happened as it has happened in legal relationships and formations, the understanding of social reality and sociological legal rules with multi valued sense perspective and the their applications in accordance with the fuzzy logic’s methods could create more equivalent and just results. It can be useful for the young lawyers and law students as a facilitating legal method especially in the materialization of the perception and interpretation of multi valued and variables. Using methods and principles of fuzzy logic in legal

  20. Fuzzy Logic Particle Tracking

    Science.gov (United States)

    2005-01-01

    A new all-electronic Particle Image Velocimetry technique that can efficiently map high speed gas flows has been developed in-house at the NASA Lewis Research Center. Particle Image Velocimetry is an optical technique for measuring the instantaneous two component velocity field across a planar region of a seeded flow field. A pulsed laser light sheet is used to illuminate the seed particles entrained in the flow field at two instances in time. One or more charged coupled device (CCD) cameras can be used to record the instantaneous positions of particles. Using the time between light sheet pulses and determining either the individual particle displacements or the average displacement of particles over a small subregion of the recorded image enables the calculation of the fluid velocity. Fuzzy logic minimizes the required operator intervention in identifying particles and computing velocity. Using two cameras that have the same view of the illumination plane yields two single exposure image frames. Two competing techniques that yield unambiguous velocity vector direction information have been widely used for reducing the single-exposure, multiple image frame data: (1) cross-correlation and (2) particle tracking. Correlation techniques yield averaged velocity estimates over subregions of the flow, whereas particle tracking techniques give individual particle velocity estimates. For the correlation technique, the correlation peak corresponding to the average displacement of particles across the subregion must be identified. Noise on the images and particle dropout result in misidentification of the true correlation peak. The subsequent velocity vector maps contain spurious vectors where the displacement peaks have been improperly identified. Typically these spurious vectors are replaced by a weighted average of the neighboring vectors, thereby decreasing the independence of the measurements. In this work, fuzzy logic techniques are used to determine the true

  1. A novel definition of L-fuzzy lattice based on fuzzy set.

    Science.gov (United States)

    Zhang, Jun-Fang

    2013-01-01

    The concept of L-fuzzy lattice is presented by means of an L-fuzzy partially ordered set. An L-fuzzy partially ordered set A is an L-fuzzy lattice if and only if one of A[a], A([a]), and A(a) is a lattice.

  2. On The Transition Probabilities for the Fuzzy States of a Fuzzy Markov Chain

    Directory of Open Access Journals (Sweden)

    J.Earnest Lazarus Piriyakumar

    2015-12-01

    Full Text Available In this paper the theory of fuzzy logic is mixed with the theory of Markov systems and the abstraction of a Markov system with fuzzy states introduced. The notions such as fuzzy transient, fuzzy recurrent etc., were introduced. The results based on these notions are introduced.

  3. Supply chain management under fuzziness recent developments and techniques

    CERN Document Server

    Öztayşi, Başar

    2014-01-01

    Supply Chain Management Under Fuzziness presents recently developed fuzzy models and techniques for supply chain management. These include: fuzzy PROMETHEE, fuzzy AHP, fuzzy ANP, fuzzy VIKOR, fuzzy DEMATEL, fuzzy clustering, fuzzy linear programming, and fuzzy inference systems. The book covers both practical applications and new developments concerning these methods. This book offers an excellent resource for researchers and practitioners in supply chain management and logistics, and will provide them with new suggestions and directions for future research. Moreover, it will support graduate students in their university courses, such as specialized courses on supply chains and logistics, as well as related courses in the fields of industrial engineering, engineering management and business administration.

  4. Fuzzy-rough set and fuzzy ID3 decision approaches to knowledge discovery in datasets

    Directory of Open Access Journals (Sweden)

    O. G. Elbarbary

    2012-07-01

    Full Text Available Fuzzy rough sets are the generalization of traditional rough sets to deal with both fuzziness and vagueness in data. The existing researches on fuzzy rough sets mainly concentrate on the construction of approximation operators. Less effort has been put on the knowledge discovery in datasets with fuzzy rough sets. This paper mainly focuses on knowledge discovery in datasets with fuzzy rough sets. After analyzing the previous works on knowledge discovery with fuzzy rough sets, we introduce formal concepts of attribute reduction with fuzzy rough sets and completely study the structure of attribute reduction.

  5. Construction of Fuzzy Map for Autonomous Mobile Robots Based on Fuzzy Confidence Model

    Directory of Open Access Journals (Sweden)

    Jung-Fu Hou

    2014-01-01

    Full Text Available This paper presents the use of fuzzy models to explicitly consider sensor uncertainty and finite resolution in solving the SLAM (simultaneous localization and mapping problem for autonomous mobile robots. The approach establishes fuzzy confidence models in describing occupied obstacles and available space. The problem is transformed into an optimization task of minimizing the alignment error between newly scanned local fuzzy maps and selected parts of a developing global fuzzy map. In aligning local fuzzy maps into a global fuzzy map, we developed a prediction strategy to crop the most potential part from the sensed local fuzzy maps to be overlapped with the global fuzzy map. A mobile vehicle equipped with a laser range finder, the Hokuyo URG-04LX, is used to demonstrate the procedure of fuzzy map building. Experimental results show that the proposed architecture is effective in generating a comprehensive global fuzzy map, which is suitable for both human comprehension and path design during real-time navigation.

  6. FUZZY ARITHMETIC AND SOLVING OF THE STATIC GOVERNING EQUATIONS OF FUZZY FINITE ELEMENT METHOD

    Institute of Scientific and Technical Information of China (English)

    郭书祥; 吕震宙; 冯立富

    2002-01-01

    The key component of finite element analysis of structures with fuzzy parameters,which is associated with handling of some fuzzy information and arithmetic relation of fuzzy variables, was the solving of the governing equations of fuzzy finite element method. Based on a given interval representation of fuzzy numbers, some arithmetic rules of fuzzy numbers and fuzzy variables were developed in terms of the properties of interval arithmetic.According to the rules and by the theory of interval finite element method, procedures for solving the static governing equations of fuzzy finite element method of structures were presented. By the proposed procedure, the possibility distributions of responses of fuzzy structures can be generated in terms of the membership functions of the input fuzzy numbers.It is shown by a numerical example that the computational burden of the presented procedures is low and easy to implement. The effectiveness and usefulness of the presented procedures are also illustrated.

  7. The Relationship of Between Fuzzy Power Groups and Fuzzy Quotient Groups%Fuzzy幂群与Fuzzy商群的相互关系

    Institute of Scientific and Technical Information of China (English)

    闫广霞; 米洪海; 施雅婷

    2006-01-01

    In this paper, we extend the concept of fuzzy quotient groups. The structures of fuzzy power groups and fuzzy quotient groups are discussed. The relationship between fuzzy power groups and fuzzy quotient groups are considered.

  8. A CAD MODEL FOR FUZZY CONCURRENT TOLERANCE

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Research situation of concurrent tolerance design has been analyzed. As fuzzy factors are objective and unavoidable in concurrent tolerance design, fuzzy optimization theory is applied in the design. A new mathematical model of concurrent tolerance design is constructed.

  9. Analysis of Fuzzy Words in Legal English

    Institute of Scientific and Technical Information of China (English)

    赵波

    2015-01-01

    With the development of legal English,fuzzy words are poured into legislative language and judicial practice constantly.Hence,this paper aims at exploring the application and funtion of different kinds of fuzzy words in legal English.

  10. Compound Option Pricing under Fuzzy Environment

    Directory of Open Access Journals (Sweden)

    Xiandong Wang

    2014-01-01

    Full Text Available Considering the uncertainty of a financial market includes two aspects: risk and vagueness; in this paper, fuzzy sets theory is applied to model the imprecise input parameters (interest rate and volatility. We present the fuzzy price of compound option by fuzzing the interest and volatility in Geske’s compound option pricing formula. For each α, the α-level set of fuzzy prices is obtained according to the fuzzy arithmetics and the definition of fuzzy-valued function. We apply a defuzzification method based on crisp possibilistic mean values of the fuzzy interest rate and fuzzy volatility to obtain the crisp possibilistic mean value of compound option price. Finally, we present a numerical analysis to illustrate the compound option pricing under fuzzy environment.

  11. Fuzzy differential equations in various approaches

    CERN Document Server

    Gomes, Luciana Takata; Bede, Barnabas

    2015-01-01

    This book may be used as reference for graduate students interested in fuzzy differential equations and researchers working in fuzzy sets and systems, dynamical systems, uncertainty analysis, and applications of uncertain dynamical systems. Beginning with a historical overview and introduction to fundamental notions of fuzzy sets, including different possibilities of fuzzy differentiation and metric spaces, this book moves on to an overview of fuzzy calculus thorough exposition and comparison of different approaches. Innovative theories of fuzzy calculus and fuzzy differential equations using fuzzy bunches of functions are introduced and explored. Launching with a brief review of essential theories, this book investigates both well-known and novel approaches in this field; such as the Hukuhara differentiability and its generalizations as well as differential inclusions and Zadeh’s extension. Through a unique analysis, results of all these theories are examined and compared.

  12. Fuzzy relational calculus theory, applications and software

    CERN Document Server

    Peeva, Ketty

    2004-01-01

    This book examines fuzzy relational calculus theory with applications in various engineering subjects. The scope of the text covers unified and exact methods with algorithms for direct and inverse problem resolution in fuzzy relational calculus. Extensive engineering applications of fuzzy relation compositions and fuzzy linear systems (linear, relational and intuitionistic) are discussed. Some examples of such applications include solutions of equivalence, reduction and minimization problems in fuzzy machines, pattern recognition in fuzzy languages, optimization and inference engines in textile and chemical engineering, etc. A comprehensive overview of the authors' original work in fuzzy relational calculus is also provided in each chapter. The attached CD-Rom contains a toolbox with many functions for fuzzy calculations, together with an original algorithm for inverse problem resolution in MATLAB. This book is also suitable for use as a textbook in related courses at advanced undergraduate and graduate level...

  13. The lattices of group fuzzy congruences and normal fuzzy subsemigroups on E-inversive semigroups.

    Science.gov (United States)

    Wang, Shoufeng

    2014-01-01

    The aim of this paper is to investigate the lattices of group fuzzy congruences and normal fuzzy subsemigroups on E-inversive semigroups. We prove that group fuzzy congruences and normal fuzzy subsemigroups determined each other in E-inversive semigroups. Moreover, we show that the set of group t-fuzzy congruences and the set of normal subsemigroups with tip t in a given E-inversive semigroup form two mutually isomorphic modular lattices for every t ∈ [0,1].

  14. An Intelligent Trading System with Fuzzy Rules and Fuzzy Capital Management

    OpenAIRE

    Naranjo, Rodrigo; Meco, Albert; Arroyo Gallardo, Javier; Santos Peñas, Matilde

    2015-01-01

    In this work we are proposing a trading system where fuzzy logic is applied not only for defining the trading rules, but also for managing the capital to invest. In fact, two fuzzy decision support systems are developed. The first one uses fuzzy logic to design the trading rules and to apply the stock market technical indicators. The second one enhances this fuzzy trading system adding a fuzzy strategy to manage the capital to trade. Additionally, a new technical market indicator that produce...

  15. On Some Fuzzy Filters in Pseudo-BCI Algebras

    Directory of Open Access Journals (Sweden)

    Xiaohong Zhang

    2014-01-01

    Full Text Available Some new properties of fuzzy associative filters (also known as fuzzy associative pseudo-filters, fuzzy p-filter (also known as fuzzy pseudo-p-filters, and fuzzy a-filter (also known as fuzzy pseudo-a-filters in pseudo-BCI algebras are investigated. By these properties, the following important results are proved: (1 a fuzzy filter (also known as fuzzy pseudo-filters of a pseudo-BCI algebra is a fuzzy associative filter if and only if it is a fuzzy a-filter; (2 a filter (also known as pseudo-filter of a pseudo-BCI algebra is associative if and only if it is an a-filter (also call it pseudo-a filter; (3 a fuzzy filter of a pseudo-BCI algebra is fuzzy a-filter if and only if it is both a fuzzy p-filter and a fuzzy q-filter.

  16. Neuro-fuzzy Control of Integrating Processes

    Directory of Open Access Journals (Sweden)

    Anna Vasičkaninová

    2011-11-01

    Full Text Available Fuzzy technology is adaptive and easily applicable in different areas.Fuzzy logic provides powerful tools to capture the perceptionof natural phenomena. The paper deals with tuning of neuro-fuzzy controllers for integrating plant and for integrating plantswith time delay. The designed approach is verified on three examples by simulations and compared plants with classical PID control.Designed fuzzy controllers lead to better closed-loop control responses then classical PID controllers.

  17. An Investigation into Fuzzy Clustering and Classification.

    Science.gov (United States)

    1984-07-01

    Introduction to Fuzzy Sets The theory of fuzzy sets was developed by Lofti Zadeh in 1965(4). The impetus behind the introduction of the fuzzy set was...Syntactic Pattern Recoonition: An Introduction, Reading, Massachussetts, Addison-Wesley, 1978 4. Zadeh , Lofti A., "Fuzzy Sets", Information and...where the models based on crisp set theory fall short of providing a useful description of things, people, or places. So, as Professor Zadeh proposed

  18. FFLP problem with symmetric trapezoidal fuzzy numbers

    Directory of Open Access Journals (Sweden)

    Reza Daneshrad

    2015-04-01

    Full Text Available The most popular approach for solving fully fuzzy linear programming (FFLP problems is to convert them into the corresponding deterministic linear programs. Khan et al. (2013 [Khan, I. U., Ahmad, T., & Maan, N. (2013. A simplified novel technique for solving fully fuzzy linear programming problems. Journal of Optimization Theory and Applications, 159(2, 536-546.] claimed that there had been no method in the literature to find the fuzzy optimal solution of a FFLP problem without converting it into crisp linear programming problem, and proposed a technique for the same. Others showed that the fuzzy arithmetic operation used by Khan et al. (2013 had some problems in subtraction and division operations, which could lead to misleading results. Recently, Ezzati et al. (2014 [Ezzati, R., Khorram, E., & Enayati, R. (2014. A particular simplex algorithm to solve fuzzy lexicographic multi-objective linear programming problems and their sensitivity analysis on the priority of the fuzzy objective functions. Journal of Intelligent and Fuzzy Systems, 26(5, 2333-2358.] defined a new operation on symmetric trapezoidal fuzzy numbers and proposed a new algorithm to find directly a lexicographic/preemptive fuzzy optimal solution of a fuzzy lexicographic multi-objective linear programming problem by using new fuzzy arithmetic operations, but their model was not fully fuzzy optimization. In this paper, a new method, by using Ezzati et al. (2014’s fuzzy arithmetic operation and a fuzzy version of simplex algorithm, is proposed for solving FFLP problem whose parameters are represented by symmetric trapezoidal fuzzy number without converting the given problem into crisp equivalent problem. By using the proposed method, the fuzzy optimal solution of FFLP problem can be easily obtained. A numerical example is provided to illustrate the proposed method.

  19. Linear Design Approach to a Fuzzy Controller

    DEFF Research Database (Denmark)

    Jantzen, Jan

    1999-01-01

    A ball-balancer, basically an inverted pendulum problem, is stabilised by a linear controller. With certain design choices, a fuzzy controller is equivalent to a summation; thus it can replace the linear controller. It can be claimed, that the fuzzy controller performs at least as well...... as the linear controller, since the linear controller is contained in the fuzzy controller. The approach makes it somewhat easier to design a fuzzy controller....

  20. Operations on Intuitionistic Fuzzy Graph Structures

    Directory of Open Access Journals (Sweden)

    Muhammad Akram

    2016-12-01

    Full Text Available An intuitionistic fuzzy graph structure (IFGS is a generalization of an intuitionistic fuzzy graph. The concept of intuitionistic fuzzy graph structure is introduced and investigated in this paper. Some operations including union, join, Cartesian product, cross product, lexicographic product, strong product and composition on intuitionistic fuzzy graph structures are defined and elaborated with a number of examples. Some basic properties of these operations are also presented.

  1. Fuzzy Clustering Using C-Means Method

    Directory of Open Access Journals (Sweden)

    Georgi Krastev

    2015-05-01

    Full Text Available The cluster analysis of fuzzy clustering according to the fuzzy c-means algorithm has been described in this paper: the problem about the fuzzy clustering has been discussed and the general formal concept of the problem of the fuzzy clustering analysis has been presented. The formulation of the problem has been specified and the algorithm for solving it has been described.

  2. Aggregation Operator Based Fuzzy Pattern Classifier Design

    DEFF Research Database (Denmark)

    Mönks, Uwe; Larsen, Henrik Legind

    2009-01-01

    This paper presents a novel modular fuzzy pattern classifier design framework for intelligent automation systems, developed on the base of the established Modified Fuzzy Pattern Classifier (MFPC) and allows designing novel classifier models which are hardware-efficiently implementable. The perfor......This paper presents a novel modular fuzzy pattern classifier design framework for intelligent automation systems, developed on the base of the established Modified Fuzzy Pattern Classifier (MFPC) and allows designing novel classifier models which are hardware-efficiently implementable...

  3. Fuzzy Based composition Control of Distillation Column

    Directory of Open Access Journals (Sweden)

    Guru.R

    2013-04-01

    Full Text Available This paper proposed a control scheme based on fuzzy logic for a methanol - water system of bubble cap distillation column. Fuzzy rule base and Inference System of fuzzy (FIS is planned to regulatethe reflux ratio (manipulated variable to obtain the preferred product composition (methanol for a distillation column. Comparisons are made with conventional controller and the results confirmed the potentials of the proposed strategy of fuzzy control.

  4. Consistent linguistic fuzzy preference relations method with ranking fuzzy numbers

    Science.gov (United States)

    Ridzuan, Siti Amnah Mohd; Mohamad, Daud; Kamis, Nor Hanimah

    2014-12-01

    Multi-Criteria Decision Making (MCDM) methods have been developed to help decision makers in selecting the best criteria or alternatives from the options given. One of the well known methods in MCDM is the Consistent Fuzzy Preference Relation (CFPR) method, essentially utilizes a pairwise comparison approach. This method was later improved to cater subjectivity in the data by using fuzzy set, known as the Consistent Linguistic Fuzzy Preference Relations (CLFPR). The CLFPR method uses the additive transitivity property in the evaluation of pairwise comparison matrices. However, the calculation involved is lengthy and cumbersome. To overcome this problem, a method of defuzzification was introduced by researchers. Nevertheless, the defuzzification process has a major setback where some information may lose due to the simplification process. In this paper, we propose a method of CLFPR that preserves the fuzzy numbers form throughout the process. In obtaining the desired ordering result, a method of ranking fuzzy numbers is utilized in the procedure. This improved procedure for CLFPR is implemented to a case study to verify its effectiveness. This method is useful for solving decision making problems and can be applied to many areas of applications.

  5. Modelo de negocio de Youtube

    Directory of Open Access Journals (Sweden)

    Julio Larrañeta Rubio

    2012-04-01

    Full Text Available El uso de las nuevas tecnologías está implicando un profundo cambio en las pautas de consumo de los contenidos audiovisuales, y el consumidor, sobre todo los de menor edad, se están alejando de las formas tradicionales de consumo de estos contenidos. Los portales de video online suponen un nuevo modelo de negocio para los productos audiovisuales.

  6. Decomposed fuzzy systems and their application in direct adaptive fuzzy control.

    Science.gov (United States)

    Hsueh, Yao-Chu; Su, Shun-Feng; Chen, Ming-Chang

    2014-10-01

    In this paper, a novel fuzzy structure termed as the decomposed fuzzy system (DFS) is proposed to act as the fuzzy approximator for adaptive fuzzy control systems. The proposed structure is to decompose each fuzzy variable into layers of fuzzy systems, and each layer is to characterize one traditional fuzzy set. Similar to forming fuzzy rules in traditional fuzzy systems, layers from different variables form the so-called component fuzzy systems. DFS is proposed to provide more adjustable parameters to facilitate possible adaptation in fuzzy rules, but without introducing a learning burden. It is because those component fuzzy systems are independent so that it can facilitate minimum distribution learning effects among component fuzzy systems. It can be seen from our experiments that even when the rule number increases, the learning time in terms of cycles is still almost constant. It can also be found that the function approximation capability and learning efficiency of the DFS are much better than that of the traditional fuzzy systems when employed in adaptive fuzzy control systems. Besides, in order to further reduce the computational burden, a simplified DFS is proposed in this paper to satisfy possible real time constraints required in many applications. From our simulation results, it can be seen that the simplified DFS can perform fairly with a more concise decomposition structure.

  7. On T-Fuzzy Ideals in Nearrings

    Directory of Open Access Journals (Sweden)

    Muhammad Akram

    2007-01-01

    Full Text Available We introduce the notion of fuzzy ideals in nearrings with respect to a t-norm T and investigate some of their properties. Using T-fuzzy ideals, characterizations of Artinian and Noetherian nearrings are established. Some properties of T-fuzzy ideals of the quotient nearrings are also considered.

  8. The fuzzy approach to statistical analysis

    NARCIS (Netherlands)

    Coppi, Renato; Gil, Maria A.; Kiers, Henk A. L.

    2006-01-01

    For the last decades, research studies have been developed in which a coalition of Fuzzy Sets Theory and Statistics has been established with different purposes. These namely are: (i) to introduce new data analysis problems in which the objective involves either fuzzy relationships or fuzzy terms;

  9. Forecasting Enrollments with Fuzzy Time Series.

    Science.gov (United States)

    Song, Qiang; Chissom, Brad S.

    The concept of fuzzy time series is introduced and used to forecast the enrollment of a university. Fuzzy time series, an aspect of fuzzy set theory, forecasts enrollment using a first-order time-invariant model. To evaluate the model, the conventional linear regression technique is applied and the predicted values obtained are compared to the…

  10. Fuzzy image processing in sun sensor

    Science.gov (United States)

    Mobasser, S.; Liebe, C. C.; Howard, A.

    2003-01-01

    This paper will describe how the fuzzy image processing is implemented in the instrument. Comparison of the Fuzzy image processing and a more conventional image processing algorithm is provided and shows that the Fuzzy image processing yields better accuracy then conventional image processing.

  11. Function Approximation Using Probabilistic Fuzzy Systems

    NARCIS (Netherlands)

    J.H. van den Berg (Jan); U. Kaymak (Uzay); R.J. Almeida e Santos Nogueira (Rui Jorge)

    2011-01-01

    textabstractWe consider function approximation by fuzzy systems. Fuzzy systems are typically used for approximating deterministic functions, in which the stochastic uncertainty is ignored. We propose probabilistic fuzzy systems in which the probabilistic nature of uncertainty is taken into account.

  12. The majority rule in a fuzzy environment.

    OpenAIRE

    Montero, Javier

    1986-01-01

    In this paper, an axiomatic approach to rational decision making in a fuzzy environment is studied. In particular, the majority rule is proposed as a rational way for aggregating fuzzy opinions in a group, when such agroup is defined as a fuzzy set.

  13. Possible use of fuzzy logic in database

    Directory of Open Access Journals (Sweden)

    Vaclav Bezdek

    2011-04-01

    Full Text Available The article deals with fuzzy logic and its possible use in database systems. At first fuzzy thinking style is shown on a simple example. Next the advantages of the fuzzy approach to database searching are considered on the database of used cars in the Czech Republic.

  14. Compactness in L-Fuzzy Topological Spaces

    CERN Document Server

    Luna-Torres, Joaquin

    2010-01-01

    We give a definition of compactness in L-fuzzy topological spaces and provide a characterization of compact L-fuzzy topological spaces, where L is a complete quasi-monoidal lattice with some additional structures, and we present a version of Tychonoff's theorem within the category of L-fuzzy topological spaces.

  15. Full averaging of fuzzy impulsive differential inclusions

    Directory of Open Access Journals (Sweden)

    Natalia V. Skripnik

    2010-09-01

    Full Text Available In this paper the substantiation of the method of full averaging for fuzzy impulsive differential inclusions is studied. We extend the similar results for impulsive differential inclusions with Hukuhara derivative (Skripnik, 2007, for fuzzy impulsive differential equations (Plotnikov and Skripnik, 2009, and for fuzzy differential inclusions (Skripnik, 2009.

  16. Design New Robust Self Tuning Fuzzy Backstopping Methodology

    OpenAIRE

    Omid Avatefipour; Farzin Piltan; Mahmoud Reza Safaei Nasrabad; Ghasem Sahamijoo; Alireza Khalilian

    2014-01-01

    This research is focused on proposed Proportional-Integral (PI) like fuzzy adaptive backstopping fuzzy algorithms based on Proportional-Derivative (PD) fuzzy rule base with the adaptation laws derived in the Lyapunov sense. Adaptive SISO PI like fuzzy adaptive backstopping fuzzy method has two main objectives; the first objective is design a SISO fuzzy system to compensate for the model uncertainties of the system, and the second objective is focused on the design PI like fuzzy controller bas...

  17. On Characterization of Rough Type-2 Fuzzy Sets

    OpenAIRE

    Tao Zhao; Zhenbo Wei

    2016-01-01

    Rough sets theory and fuzzy sets theory are important mathematical tools to deal with uncertainties. Rough fuzzy sets and fuzzy rough sets as generalizations of rough sets have been introduced. Type-2 fuzzy set provides additional degree of freedom, which makes it possible to directly handle high uncertainties. In this paper, the rough type-2 fuzzy set model is proposed by combining the rough set theory with the type-2 fuzzy set theory. The rough type-2 fuzzy approximation operators induced f...

  18. Estimate of the weight of japanese quail eggs through fuzzy sets theory Estimativa do peso dos ovos de codornas japonesas por meio da teoria dos conjuntos fuzzy

    Directory of Open Access Journals (Sweden)

    Jaqueline de Oliveira Castro

    2012-02-01

    Full Text Available Quail breeding is a viable alternative for animal production and due to its low investment, fast return of invested capital, use of small areas and creation of jobs has aroused much interest in Brazil. The aim of this study was to develop a model based on fuzzy set theory to predict the weight of eggs from Japanese quails. The proposed fuzzy model was based on data from field measurement experiments, as well as from literature referring to the influence of environment over the weight of eggs. To develop the fuzzy system, air dry-bulb temperature (t db, ° C and relative air humidity (RH, % were defined as input variables and trapezoidal and triangular membership functions were used, respectively. The absolute deviation between the values for observed egg weight and egg weight estimated by the fuzzy system, varied between 0.01 g and 0.32 g, and the average deviation was 0.14 g. The average error found was 2.33%, and the determination coefficient (R² was equal to 0.668. The fuzzy system developed to estimate the weight of Japanese quail eggs, based on the t db and RH provided low values for absolute deviation and percentage error, allows a realistic estimate of the weight of eggs in different environmental conditions.A cotornicultura é uma alternativa na produção animal que, pelo baixo investimento, rápido retorno do capital investido, utilização de pequenas áreas e à gereção de novos empregos, tem despertado grande interesse no Brasil. Neste trabalho, objetivou-se desenvolver um modelo baseado na teoria dos conjuntos fuzzy para a predição do peso de ovos de codornas japonesas. O modelo fuzzy proposto foi elaborado com base em dados experimentais oriundos de medições em campo, bem como da literatura, a respeito da influência do ambiente sobre o peso de ovos de codornas japonesas de postura. Para o desenvolvimento do sistema fuzzy, foram definidas, como variáveis de entrada, a temperatura de bulo seco (t bs, °C e a umidade

  19. Competencies assessment using fuzzy logic

    Directory of Open Access Journals (Sweden)

    Matej Jevšček

    2016-06-01

    Full Text Available Research Question: Competencies evaluation is complex. The question is how to evaluate a competency which was assessed with 360° feedback, in one result using fuzzy logic tools so the result represents an actual competency development in an individual. Purpose: The purpose and goal of the study is to determine a possible process of competency evaluation that would enable creating a single competency assessment using fuzzy logic methods. Method: The theoretical part examines the current state and terminology of competencies and fuzzy logic. The empirical part consists of a quantitative research study. Data from the survey questionnaire was used for model testing. Results: An example of an »Initiative« competency evaluation model is created and tested in the research study. Testing confirmed that evaluation using fuzzy logic is efficient. Organization: The study directly affects the development of the HR function in organizations. It enables an easier and more oriented competency evaluation. Society: The study enables easier orientation in competencies development that can improve the social order as well as social responsibility and the environment indirectly. Originality: The study presents a new competency evaluation model using fuzzy logic. Limitations/Future Research: The study is restricted to one competency and certain assessors. Further research could explore the model with several assessors of the same rank.

  20. Fuzzy logic of Aristotelian forms

    Energy Technology Data Exchange (ETDEWEB)

    Perlovsky, L.I. [Nichols Research Corp., Lexington, MA (United States)

    1996-12-31

    Model-based approaches to pattern recognition and machine vision have been proposed to overcome the exorbitant training requirements of earlier computational paradigms. However, uncertainties in data were found to lead to a combinatorial explosion of the computational complexity. This issue is related here to the roles of a priori knowledge vs. adaptive learning. What is the a-priori knowledge representation that supports learning? I introduce Modeling Field Theory (MFT), a model-based neural network whose adaptive learning is based on a priori models. These models combine deterministic, fuzzy, and statistical aspects to account for a priori knowledge, its fuzzy nature, and data uncertainties. In the process of learning, a priori fuzzy concepts converge to crisp or probabilistic concepts. The MFT is a convergent dynamical system of only linear computational complexity. Fuzzy logic turns out to be essential for reducing the combinatorial complexity to linear one. I will discuss the relationship of the new computational paradigm to two theories due to Aristotle: theory of Forms and logic. While theory of Forms argued that the mind cannot be based on ready-made a priori concepts, Aristotelian logic operated with just such concepts. I discuss an interpretation of MFT suggesting that its fuzzy logic, combining a-priority and adaptivity, implements Aristotelian theory of Forms (theory of mind). Thus, 2300 years after Aristotle, a logic is developed suitable for his theory of mind.

  1. Fuzzy Logic for Incidence Geometry.

    Science.gov (United States)

    Tserkovny, Alex

    The paper presents a mathematical framework for approximate geometric reasoning with extended objects in the context of Geography, in which all entities and their relationships are described by human language. These entities could be labelled by commonly used names of landmarks, water areas, and so forth. Unlike single points that are given in Cartesian coordinates, these geographic entities are extended in space and often loosely defined, but people easily perform spatial reasoning with extended geographic objects "as if they were points." Unfortunately, up to date, geographic information systems (GIS) miss the capability of geometric reasoning with extended objects. The aim of the paper is to present a mathematical apparatus for approximate geometric reasoning with extended objects that is usable in GIS. In the paper we discuss the fuzzy logic (Aliev and Tserkovny, 2011) as a reasoning system for geometry of extended objects, as well as a basis for fuzzification of the axioms of incidence geometry. The same fuzzy logic was used for fuzzification of Euclid's first postulate. Fuzzy equivalence relation "extended lines sameness" is introduced. For its approximation we also utilize a fuzzy conditional inference, which is based on proposed fuzzy "degree of indiscernibility" and "discernibility measure" of extended points.

  2. Fuzzy Logic for Incidence Geometry

    Science.gov (United States)

    2016-01-01

    The paper presents a mathematical framework for approximate geometric reasoning with extended objects in the context of Geography, in which all entities and their relationships are described by human language. These entities could be labelled by commonly used names of landmarks, water areas, and so forth. Unlike single points that are given in Cartesian coordinates, these geographic entities are extended in space and often loosely defined, but people easily perform spatial reasoning with extended geographic objects “as if they were points.” Unfortunately, up to date, geographic information systems (GIS) miss the capability of geometric reasoning with extended objects. The aim of the paper is to present a mathematical apparatus for approximate geometric reasoning with extended objects that is usable in GIS. In the paper we discuss the fuzzy logic (Aliev and Tserkovny, 2011) as a reasoning system for geometry of extended objects, as well as a basis for fuzzification of the axioms of incidence geometry. The same fuzzy logic was used for fuzzification of Euclid's first postulate. Fuzzy equivalence relation “extended lines sameness” is introduced. For its approximation we also utilize a fuzzy conditional inference, which is based on proposed fuzzy “degree of indiscernibility” and “discernibility measure” of extended points. PMID:27689133

  3. Implementing fuzzy polynomial interpolation (FPI and fuzzy linear regression (LFR

    Directory of Open Access Journals (Sweden)

    Maria Cristina Floreno

    1996-05-01

    Full Text Available This paper presents some preliminary results arising within a general framework concerning the development of software tools for fuzzy arithmetic. The program is in a preliminary stage. What has been already implemented consists of a set of routines for elementary operations, optimized functions evaluation, interpolation and regression. Some of these have been applied to real problems.This paper describes a prototype of a library in C++ for polynomial interpolation of fuzzifying functions, a set of routines in FORTRAN for fuzzy linear regression and a program with graphical user interface allowing the use of such routines.

  4. Need for fuzzy morphology: erosion as a fuzzy marker

    Science.gov (United States)

    Dougherty, Edward R.; Sinha, Divyendu

    1992-03-01

    The need for fuzzy mathematical morphology is explained in terms of the need for fuzzy erosion in certain types of applications, especially where erosion is serving as a marker, as with hit-or-miss shape recognition. Since erosion is defined by fitting, there at once arises a need for relating fuzzified set inclusion and mathematical morphology. The result is a very general class of Minkowski algebras based upon an axiomatic description of indicator functions that yield acceptable set-inclusion fuzzifications and a subclass of richer Minkowski algebras resulting from an analytic formulation for indicators that is constrained by the axioms.

  5. Fuzzy evaluation method using fuzzy rule approach in multicriteria analysis

    Directory of Open Access Journals (Sweden)

    Othman Mahmod

    2008-01-01

    Full Text Available A multicriteria analysis in ranking the quality of teaching using fuzzy rule is proposed. The proposed method uses the application of fuzzy sets and approximate reasoning in deciding the ranking of the quality of teaching in several courses. The proposed method introduces normalizing data which dampen the extreme value that exists in the data. The use of the model is suitable in evaluating situations that involve subjectivity, vagueness and imprecise information. Experimental results are comparable and the method performs better in some domains. .

  6. Accurate segmentation of leukocyte in blood cell images using Atanassov's intuitionistic fuzzy and interval Type II fuzzy set theory.

    Science.gov (United States)

    Chaira, Tamalika

    2014-06-01

    In this paper automatic leukocyte segmentation in pathological blood cell images is proposed using intuitionistic fuzzy and interval Type II fuzzy set theory. This is done to count different types of leukocytes for disease detection. Also, the segmentation should be accurate so that the shape of the leukocytes is preserved. So, intuitionistic fuzzy set and interval Type II fuzzy set that consider either more number of uncertainties or a different type of uncertainty as compared to fuzzy set theory are used in this work. As the images are considered fuzzy due to imprecise gray levels, advanced fuzzy set theories may be expected to give better result. A modified Cauchy distribution is used to find the membership function. In intuitionistic fuzzy method, non-membership values are obtained using Yager's intuitionistic fuzzy generator. Optimal threshold is obtained by minimizing intuitionistic fuzzy divergence. In interval type II fuzzy set, a new membership function is generated that takes into account the two levels in Type II fuzzy set using probabilistic T co norm. Optimal threshold is selected by minimizing a proposed Type II fuzzy divergence. Though fuzzy techniques were applied earlier but these methods failed to threshold multiple leukocytes in images. Experimental results show that both interval Type II fuzzy and intuitionistic fuzzy methods perform better than the existing non-fuzzy/fuzzy methods but interval Type II fuzzy thresholding method performs little bit better than intuitionistic fuzzy method. Segmented leukocytes in the proposed interval Type II fuzzy method are observed to be distinct and clear.

  7. Reverse triple I method of fuzzy reasoning

    Institute of Scientific and Technical Information of China (English)

    宋士吉; 吴澄

    2002-01-01

    A theory of reverse triple I method with sustention degree is presented by using the implication operator R0 in every step of the fuzzy reasoning. Its computation formulas of supremum for fuzzy modus ponens and infimum for fuzzy modus tollens are given respectively. Moreover, through the generalization of this problem, the corresponding formulas of ?-reverse triple I method with sustention degree are also obtained. In addition, the theory of reverse triple I method with restriction degree is proposed as well by using the operator R0, and the computation formulas of infimum for fuzzy modus ponens and supremum for fuzzy modus tollens are shown.

  8. Relationship between fuzzy controllers and PID controllers

    Institute of Scientific and Technical Information of China (English)

    李洪兴

    1999-01-01

    The internal relations between fuzzy controllers and PID controllers are revealed. First, it is pointed out that a fuzzy controller with one input and one output is just a piecewise P controller. Then it is proved that a fuzzy controller with two inputs and one output is just a piecewise PD (or I) controller with interaction between P and D (or PI). At last, the conclusion that a fuzzy controller with three inputs and one output is just a piecewise PID controller with interaction among P, I and D is given. Moreover, a kind of difference scheme of fuzzy controllers is designed.

  9. On Intuitionistic Fuzzy Context-Free Languages

    Directory of Open Access Journals (Sweden)

    Jianhua Jin

    2013-01-01

    automata theory. Additionally, we introduce the concepts of Chomsky normal form grammar (IFCNF and Greibach normal form grammar (IFGNF based on intuitionistic fuzzy sets. The results of our study indicate that intuitionistic fuzzy context-free languages generated by IFCFGs are equivalent to those generated by IFGNFs and IFCNFs, respectively, and they are also equivalent to intuitionistic fuzzy recognizable step functions. Then some operations on the family of intuitionistic fuzzy context-free languages are discussed. Finally, pumping lemma for intuitionistic fuzzy context-free languages is investigated.

  10. Truth-value transmittal fuzzy reasoning interpolator

    Institute of Scientific and Technical Information of China (English)

    YAN Jianping; LEUNG Yee

    2005-01-01

    In this paper, we firstly associate fuzzy reasoning algorithm with the interpolation algorithm and discuss the limitation of defuzzification methods used commonly in the fuzzy reasoning algorithm. Secondly, we give a new fuzzy reasoning algorithm in case of single input, called the truth-value transmittal method, and discuss its properties. Finally, we analyze the rationality to adopy the truth-value transmittal method as the defuzzification method of full implication triple I method, and show that although CRI and triple I fuzzy reasoning method are different from fuzzy output set, they are uniform finally under the truth-value transmittal defuzzification method.

  11. Generalized fuzzy ideals of near-rings

    Institute of Scientific and Technical Information of China (English)

    ZHAN Jian-ming; Dawaz B.

    2009-01-01

    The concept of ((∈),(∈)V (q))-fuzzy subnear-rings (ideals) of a near-ring is introduced and some of its related properties are investigated. In particular, the relationships among ordinary fuzzy subnear-rings (ideals), (∈,∈V q)-fuzzy subnear-rings (ideals) and ((∈),(∈)V (q))-fuzzy subnearrings (ideals) of near-rings are described. Finally, some characterization of [μ]t is given by means of (∈,∈V q)-fuzzy ideals.

  12. A novel fuzzy sensor fusion algorithm

    Institute of Scientific and Technical Information of China (English)

    FU Hua; YANG Yi-kui; MA Ke; LIU Yu-jia

    2011-01-01

    A novel fusion algorithm was given based on fuzzy similarity and fuzzy integral theory.First,it calculated the fuzzy similarity among a certain sensor's measurement values and the multiple sensors' objective prediction values to determine the importance weight of each sensor and realize multi-sensor data fusion.Then according to the determined importance weight,an intelligent fusion system based on fuzzy integral theory was given,which can solve FEI-DEO and DEI-DEO fusion problems and realize the decision fusion.Simulation results were proved that fuzzy integral algorithm has enhanced the capability of handling the uncertain information and improved the intelligence degrees.

  13. CONSIDERING NEIGHBORHOOD INFORMATION IN IMAGE FUZZY CLUSTERING

    Institute of Scientific and Technical Information of China (English)

    Huang Ning; Zhu Minhui; Zhang Shourong

    2002-01-01

    Fuzzy C-means clustering algorithm is a classical non-supervised classification method.For image classification, fuzzy C-means clustering algorithm makes decisions on a pixel-by-pixel basis and does not take advantage of spatial information, regardless of the pixels' correlation. In this letter, a novel fuzzy C-means clustering algorithm is introduced, which is based on image's neighborhood system. During classification procedure, the novel algorithm regards all pixels'fuzzy membership as a random field. The neighboring pixels' fuzzy membership information is used for the algorithm's iteration procedure. As a result, the algorithm gives a more smooth classification result and cuts down the computation time.

  14. Fuzzy clustering of mechanisms

    Indian Academy of Sciences (India)

    Amitabha Ghosh; Dilip Kumar Pratihar; M V V Amarnath; Guenter Dittrich; Jorg Mueller

    2012-10-01

    During the course of development of Mechanical Engineering, a large number of mechanisms (that is, linkages to perform various types of tasks) have been conceived and developed. Quite a few atlases and catalogues were prepared by the designers of machines and mechanical systems. However, often it is felt that a clustering technique for handling the list of large number of mechanisms can be very useful,if it is developed based on a scientific principle. In this paper, it has been shown that the concept of fuzzy sets can be conveniently used for this purpose, if an adequate number of properly chosen attributes (also called characteristics) are identified. Using two clustering techniques, the mechanisms have been classified in the present work and in future, it may be extended to develop an expert system, which can automate type synthesis phase of mechanical design. To the best of the authors’ knowledge, this type of clustering of mechanisms has not been attempted before. Thus, this is the first attempt to cluster the mechanisms based on some quantitative measures. It may help the engineers to carry out type synthesis of the mechanisms.

  15. Metrics on Noncompact Fuzzy Number Space (E^)n

    Institute of Scientific and Technical Information of China (English)

    冯玉瑚

    2004-01-01

    The theory of metric spaces of fuzzy numbers has been established and found very convenient in many research fields on fuzzy analysis such as fuzzy integrals and differentials, fuzzy differential equations, fuzzy random variables and fuzzy stochastic processes etc.. But, a large part of this theory heavily depends on the condition that fuzzy number has to have compact support set and so fails to analyze and apply noncompact fuzzy numbers. The purpose of this paper is to introduce three classes of metrics on noncompact fuzzy number space and to discuss their basic properties, completeness and separability in detail.

  16. Fuzzy Entropy: Axiomatic Definition and Neural Networks Model

    Institute of Scientific and Technical Information of China (English)

    QINGMing; CAOYue; HUANGTian-min

    2004-01-01

    The measure of uncertainty is adopted as a measure of information. The measures of fuzziness are known as fuzzy information measures. The measure of a quantity of fuzzy information gained from a fuzzy set or fuzzy system is known as fuzzy entropy. Fuzzy entropy has been focused and studied by many researchers in various fields. In this paper, firstly, the axiomatic definition of fuzzy entropy is discussed. Then, neural networks model of fuzzy entropy is proposed, based on the computing capability of neural networks. In the end, two examples are discussed to show the efficiency of the model.

  17. Application of fuzzy logic to social choice theory

    CERN Document Server

    Mordeson, John N; Clark, Terry D

    2015-01-01

    Fuzzy social choice theory is useful for modeling the uncertainty and imprecision prevalent in social life yet it has been scarcely applied and studied in the social sciences. Filling this gap, Application of Fuzzy Logic to Social Choice Theory provides a comprehensive study of fuzzy social choice theory.The book explains the concept of a fuzzy maximal subset of a set of alternatives, fuzzy choice functions, the factorization of a fuzzy preference relation into the ""union"" (conorm) of a strict fuzzy relation and an indifference operator, fuzzy non-Arrowian results, fuzzy versions of Arrow's

  18. Weakly continuous functions on mixed fuzzy topological spaces

    Directory of Open Access Journals (Sweden)

    Binod Chandra Tripathy

    2014-04-01

    Full Text Available The notions of continuity was generalized in the fuzzy setting by Chang (1968. Later on Azad (1981 introduced some weaker form of fuzzy continuity like fuzzy almost continuity, fuzzy semi-continuity and fuzzy weak continuity. These are natural generalization of the corresponding weaker forms of continuity in topological spaces. Recently Arya and Singal (2001a and b introduce another weaker form of fuzzy continuity, namely fuzzy subweakly continuity as a natural generalization of subweak continuity introduced by Rose (1984. In this paper we introduce fuzzy weak continuity in mixed fuzzy topological space.

  19. Fuzzy Morphological Polynomial Image Representation

    Directory of Open Access Journals (Sweden)

    Chin-Pan Huang

    2010-01-01

    Full Text Available A novel signal representation using fuzzy mathematical morphology is developed. We take advantage of the optimum fuzzy fitting and the efficient implementation of morphological operators to extract geometric information from signals. The new representation provides results analogous to those given by the polynomial transform. Geometrical decomposition of a signal is achieved by windowing and applying sequentially fuzzy morphological opening with structuring functions. The resulting representation is made to resemble an orthogonal expansion by constraining the results of opening to equate adapted structuring functions. Properties of the geometric decomposition are considered and used to calculate the adaptation parameters. Our procedure provides an efficient and flexible representation which can be efficiently implemented in parallel. The application of the representation is illustrated in data compression and fractal dimension estimation temporal signals and images.

  20. Cooperative Answering of Fuzzy Queries

    Institute of Scientific and Technical Information of China (English)

    Narjes Hachani; Mohamed Ali Ben Hassine; Hanène Chettaoui; Habib Ounelli

    2009-01-01

    The majority of existing information systems deals with crisp data through crisp database systems. Traditional Database Management Systems (DBMS) have not taken into account imprecision so one can say there is some sort of lack of flexibility. The reason is that queries retrieve only elements which precisely match to the given Boolean query. That is, an element belongs to the result if the query is true for this element; otherwise, no answers are returned to the user. The aim of this paper is to present a cooperative approach to handling empty answers of fuzzy conjunctive queries by referring to the Formal Concept Analysis (FCA) theory and fuzzy logic. We present an architecture which combines FCA and databases. The processing of fuzzy queries allows detecting the minimal reasons of empty answers. We also use concept lattice in order to provide the user with the nearest answers in the case of a query failure.

  1. Identification Filtering with fuzzy estimations

    Directory of Open Access Journals (Sweden)

    J.J Medel J

    2012-10-01

    Full Text Available A digital identification filter interacts with an output reference model signal known as a black-box output system. The identification technique commonly needs the transition and gain matrixes. Both estimation cases are based on mean square criterion obtaining of the minimum output error as the best estimation filtering. The evolution system represents adaptive properties that the identification mechanism includes considering the fuzzy logic strategies affecting in probability sense the evolution identification filter. The fuzzy estimation filter allows in two forms describing the transition and the gain matrixes applying actions that affect the identification structure. Basically, the adaptive criterion conforming the inference mechanisms set, the Knowledge and Rule bases, selecting the optimal coefficients in distribution form. This paper describes the fuzzy strategies applied to the Kalman filter transition function, and gain matrixes. The simulation results were developed using Matlab©.

  2. Pronósticos en modelos autorregresivos con umbral

    OpenAIRE

    Russell Noriega, María Guadalupe

    2006-01-01

    Los modelos de series de tiempo no lineal constituyen una herramienta útil para describir y pronosticar una gran variedad de fenómenos naturales. Uno de los modelos más utilizados y estudiados en la literatura de modelos no lineales corresponde a los modelos autorregresivos tipo umbral ("threshold"), identificados en la literaura como modelos TAR.

  3. Contra continuity and almost contra continuity in generalized fuzzy topological spaces

    Science.gov (United States)

    Bhattacharya, Baby; Chakraborty, Jayasree

    2015-05-01

    In this paper we introduce fuzzy contra continuity and almost contra continuity in generalized fuzzy topological space. Fuzzy almost contra continuity is weaker than fuzzy contra continuity in generalized fuzzy topological space. Then we investigate their characterizations and properties. We also established some equivalent relation on fuzzy contra continuity and fuzzy almost contra continuity in generalized fuzzy topological spaces.

  4. Parallel Fuzzy P+Fuzzy I+Fuzzy D Controller:Design and Performance Evaluation

    Institute of Scientific and Technical Information of China (English)

    Vineet Kumar; A.P.Mittal

    2010-01-01

    In this paper,a parallel fuzzy proportional plus fuzzy integral plus fuzzy derivative (FP+FI+FD) controller is proposed.It is derived from the conventional parallel proportional-integral-derivative (PID) controller.It preserves the linear structure of a conventional parallel PID controller,with analytical formulas.The final shape of the controller is a discrete-time fuzzy version of a conventional parallel PID controller.Computer simulations are performed to evaluate the performance of the FP+FI+FD controller for setpoint tracking and load-disturbance rejection for some complex processes,such as first-and second-order processes with delay,inverse response process with and without delay and higher order processes.Also,the performance of the proposed fuzzy controller is evaluated experimentally on highly nonlinear liquid-flow process with a hysteresis characteristic due to a pneumatic control valve.The simulation and real time control is done using National InstrumentTM hardware and software (LabVIEWTM).The response of the FP+FI+FD controller is compared with the conventional parallel PID controller,tuned with the Ziegler-Nichols (Z-H) and (A)str(o)mH(a)gglund (A-H) tuning technique.It is observed that the FP+FI+FD controller performed much better than the conventional PI/PID controller.Simulation and experimental results demonstrate the effectiveness of the proposed parallel FP+FI+FD controller.

  5. Hypotheses testing for fuzzy robust regression parameters

    Energy Technology Data Exchange (ETDEWEB)

    Kula, Kamile Sanli [Ahi Evran University, Department of Mathematics, 40200 Kirsehir (Turkey)], E-mail: sanli2004@hotmail.com; Apaydin, Aysen [Ankara University, Department of Statistics, 06100 Ankara (Turkey)], E-mail: apaydin@science.ankara.edu.tr

    2009-11-30

    The classical least squares (LS) method is widely used in regression analysis because computing its estimate is easy and traditional. However, LS estimators are very sensitive to outliers and to other deviations from basic assumptions of normal theory [Huynh H. A comparison of four approaches to robust regression. Psychol Bull 1982;92:505-12; Stephenson D. 2000. Available from: (http://folk.uib.no/ngbnk/kurs/notes/node38.html); Xu R, Li C. Multidimensional least-squares fitting with a fuzzy model. Fuzzy Sets and Systems 2001;119:215-23.]. If there exists outliers in the data set, robust methods are preferred to estimate parameters values. We proposed a fuzzy robust regression method by using fuzzy numbers when x is crisp and Y is a triangular fuzzy number and in case of outliers in the data set, a weight matrix was defined by the membership function of the residuals. In the fuzzy robust regression, fuzzy sets and fuzzy regression analysis was used in ranking of residuals and in estimation of regression parameters, respectively [Sanli K, Apaydin A. Fuzzy robust regression analysis based on the ranking of fuzzy sets. Inernat. J. Uncertainty Fuzziness and Knowledge-Based Syst 2008;16:663-81.]. In this study, standard deviation estimations are obtained for the parameters by the defined weight matrix. Moreover, we propose another point of view in hypotheses testing for parameters.

  6. Estudo Comparativo de Controladores Fuzzy Aplicados a um Sistema Solar Fotovoltaico.

    OpenAIRE

    Carlos Antônio Pereira Tavares

    2009-01-01

    Neste trabalho apresenta-se o modelo de um controlador baseado em Lógica Fuzzy para um sistema de energia baseado em fonte renovável solar fotovoltaica (photovoltaic - PV) multi-string em operação isolada, para o aproveitamento da máxima potência desta fonte. O sistema é composto por painéis solares, conversor CC-CC tipo elevador de tensão (boost), armazenamento por banco de baterias, inversor trifásico e carga trifásica variável. O sistema fotovoltaico foi modelado no MATLAB/Simulink de form...

  7. Anaesthesia monitoring using fuzzy logic.

    Science.gov (United States)

    Baig, Mirza Mansoor; Gholamhosseini, Hamid; Kouzani, Abbas; Harrison, Michael J

    2011-10-01

    Humans have a limited ability to accurately and continuously analyse large amount of data. In recent times, there has been a rapid growth in patient monitoring and medical data analysis using smart monitoring systems. Fuzzy logic-based expert systems, which can mimic human thought processes in complex circumstances, have indicated potential to improve clinicians' performance and accurately execute repetitive tasks to which humans are ill-suited. The main goal of this study is to develop a clinically useful diagnostic alarm system based on fuzzy logic for detecting critical events during anaesthesia administration. The proposed diagnostic alarm system called fuzzy logic monitoring system (FLMS) is presented. New diagnostic rules and membership functions (MFs) are developed. In addition, fuzzy inference system (FIS), adaptive neuro fuzzy inference system (ANFIS), and clustering techniques are explored for developing the FLMS' diagnostic modules. The performance of FLMS which is based on fuzzy logic expert diagnostic systems is validated through a series of off-line tests. The training and testing data set are selected randomly from 30 sets of patients' data. The accuracy of diagnoses generated by the FLMS was validated by comparing the diagnostic information with the one provided by an anaesthetist for each patient. Kappa-analysis was used for measuring the level of agreement between the anaesthetist's and FLMS's diagnoses. When detecting hypovolaemia, a substantial level of agreement was observed between FLMS and the human expert (the anaesthetist) during surgical procedures. The diagnostic alarm system FLMS demonstrated that evidence-based expert diagnostic systems can diagnose hypovolaemia, with a substantial degree of accuracy, in anaesthetized patients and could be useful in delivering decision support to anaesthetists.

  8. Fuzzy Stochastic Optimization Theory, Models and Applications

    CERN Document Server

    Wang, Shuming

    2012-01-01

    Covering in detail both theoretical and practical perspectives, this book is a self-contained and systematic depiction of current fuzzy stochastic optimization that deploys the fuzzy random variable as a core mathematical tool to model the integrated fuzzy random uncertainty. It proceeds in an orderly fashion from the requisite theoretical aspects of the fuzzy random variable to fuzzy stochastic optimization models and their real-life case studies.   The volume reflects the fact that randomness and fuzziness (or vagueness) are two major sources of uncertainty in the real world, with significant implications in a number of settings. In industrial engineering, management and economics, the chances are high that decision makers will be confronted with information that is simultaneously probabilistically uncertain and fuzzily imprecise, and optimization in the form of a decision must be made in an environment that is doubly uncertain, characterized by a co-occurrence of randomness and fuzziness. This book begins...

  9. Introduction to fuzzy logic using Matlab

    CERN Document Server

    Sivanandam, SN; Deepa, S N

    2006-01-01

    Fuzzy Logic, at present is a hot topic, among academicians as well various programmers. This book is provided to give a broad, in-depth overview of the field of Fuzzy Logic. The basic principles of Fuzzy Logic are discussed in detail with various solved examples. The different approaches and solutions to the problems given in the book are well balanced and pertinent to the Fuzzy Logic research projects. The applications of Fuzzy Logic are also dealt to make the readers understand the concept of Fuzzy Logic. The solutions to the problems are programmed using MATLAB 6.0 and the simulated results are given. The MATLAB Fuzzy Logic toolbox is provided for easy reference.

  10. Fuzzy Clustering - Principles, Methods and Examples

    DEFF Research Database (Denmark)

    Kroszynski, Uri; Zhou, Jianjun

    1998-01-01

    One of the most remarkable advances in the field of identification and control of systems -in particular mechanical systems- whose behaviour can not be described by means of the usual mathematical models, has been achieved by the application of methods of fuzzy theory.In the framework of a study...... about identification of "black-box" properties by analysis of system input/output data sets, we have prepared an introductory note on the principles and the most popular data classification methods used in fuzzy modeling. This introductory note also includes some examples that illustrate the use...... of the methods. The examples were solved by hand and served as a test bench for exploration of the MATLAB capabilities included in the Fuzzy Control Toolbox. The fuzzy clustering methods described include Fuzzy c-means (FCM), Fuzzy c-lines (FCL) and Fuzzy c-elliptotypes (FCE)....

  11. Adaptive fuzzy controllers based on variable universe

    Institute of Scientific and Technical Information of China (English)

    李洪兴

    1999-01-01

    Adaptive fuzzy controllers by means of variable universe are proposed based on interpolation forms of fuzzy control. First, monotonicity of control rules is defined, and it is proved that the monotonicity of interpolation functions of fuzzy control is equivalent to the monotonicity of control rules. This means that there is not any contradiction among the control rules under the condition for the control rules being monotonic. Then structure of the contraction-expansion factor is discussed. At last, three models of adaptive fuzzy control based on variable universe are given which are adaptive fuzzy control model with potential heredity, adaptive fuzzy control model with obvious heredity and adaptive fuzzy control model with successively obvious heredity.

  12. Strong Limit Theorems for Arbitrary Fuzzy Stochastic Sequences

    Institute of Scientific and Technical Information of China (English)

    FEI Wei-yin

    2008-01-01

    Based on fuzzy random variables, the concept of fuzzy stochastic sequences is defined. Strong limit theorems for fuzzy stochastic sequences are established. Some known results in non-fuzzy stochastic sequences are extended. In order to prove results of this paper, the notion of fuzzy martingale difference sequences is also introduced.

  13. Some Duality Results for Fuzzy Nonlinear Programming Problem

    OpenAIRE

    Sangeeta Jaiswal; Geetanjali Panda

    2012-01-01

    The concept of duality plays an important role in optimization theory. This paper discusses some relations between primal and dual nonlinear programming problems in fuzzy environment. Here, fuzzy feasible region for a general fuzzy nonlinear programming is formed and the concept of fuzzy feasible solution is defined. First order dual relation for fuzzy nonlinear programming problem is studied.

  14. Generalized semi-extremally disconnectedness in double fuzzy topological spaces

    Directory of Open Access Journals (Sweden)

    Fatimah M. Mohammed

    2017-03-01

    Full Text Available In this paper we introduce the concepts of (r, s-generalized fuzzy semi-extremally disconnectedness spaces and study the effect of generalized double fuzzy semi-irresolute and generalized double fuzzy semiopen functions in this space. Moreover, we investigate some interesting relationship between generalized double fuzzy semiopen functions and (r, s-generalized fuzzy semi-extremally disconnectedness spaces.

  15. O uso de ácido valproico para a indução de modelos animais de autismo: uma revisão

    Directory of Open Access Journals (Sweden)

    Eloise Schlickmann

    2013-06-01

    Full Text Available INTRODUÇÃO: O autismo é um distúrbio neuropsiquiátrico com base biológica significativa. Faz parte de um grupo de condições definidas como transtornos invasivos do desenvolvimento e é caracterizado de um ponto de vista comportamental, com etiologias múltiplas e graus variados de gravidade. Entre os modelos animais de autismo estudados mais extensivamente estão aqueles derivados da exposição a agentes teratogênicos. OBJETIVO: O objetivo deste estudo foi mostrar evidências sobre a associação entre a exposição ao ácido valproico e o desenvolvimento de sinais clínicos semelhantes aos encontrados em pacientes autistas, por meio de uma revisão de literatura. MÉTODO: Este é um artigo de revisão de literatura realizado mediante pesquisas no MedLine e SciELO. Foram utilizadas as palavras-chave "autismo", "ácido valproico" e "modelo animal de autismo". Selecionaram-se artigos publicados entre os anos de 2008 a 2012. RESULTADOS: Foi encontrado um total de 119 artigos e, desses, foram selecionados 22 artigos. CONCLUSÃO: Modelos animais gerados pela exposição de pré ou pós-natal de ácido valproico apresentam características adequadas para o estudo do autismo, principalmente porque evidenciam características comportamentais similares àquelas encontradas em indivíduos autistas.

  16. Fuzzy simulation in concurrent engineering

    Science.gov (United States)

    Kraslawski, A.; Nystrom, L.

    1992-01-01

    Concurrent engineering is becoming a very important practice in manufacturing. A problem in concurrent engineering is the uncertainty associated with the values of the input variables and operating conditions. The problem discussed in this paper concerns the simulation of processes where the raw materials and the operational parameters possess fuzzy characteristics. The processing of fuzzy input information is performed by the vertex method and the commercial simulation packages POLYMATH and GEMS. The examples are presented to illustrate the usefulness of the method in the simulation of chemical engineering processes.

  17. The semantics of fuzzy logic

    Science.gov (United States)

    Ruspini, Enrique H.

    1991-01-01

    Summarized here are the results of recent research on the conceptual foundations of fuzzy logic. The focus is primarily on the principle characteristics of a model that quantifies resemblance between possible worlds by means of a similarity function that assigns a number between 0 and 1 to every pair of possible worlds. Introduction of such a function permits one to interpret the major constructs and methods of fuzzy logic: conditional and unconditional possibility and necessity distributions and the generalized modus ponens of Zadeh on the basis of related metric relationships between subsets of possible worlds.

  18. Fuzzy sets and autonomous navigation

    Science.gov (United States)

    Lea, Robert N.

    1987-01-01

    The use of fuzzy sets in modeling the human expert for certain Space Shuttle navigation problems is discussed with particular reference to onboard and ground console data monitoring tasks traditionally performed by astronauts and engineers. Specific problems include determining the quality of sensor data and of the filter state. The results obtained in this study indicate that fuzzy sets can be successfully used in modeling human reaction to rules in decision-making processes. They can also be used within software systems where guidelines have traditionally been used to set strict tolerances.

  19. Fuzzy simulation in concurrent engineering

    Science.gov (United States)

    Kraslawski, A.; Nystrom, L.

    1992-01-01

    Concurrent engineering is becoming a very important practice in manufacturing. A problem in concurrent engineering is the uncertainty associated with the values of the input variables and operating conditions. The problem discussed in this paper concerns the simulation of processes where the raw materials and the operational parameters possess fuzzy characteristics. The processing of fuzzy input information is performed by the vertex method and the commercial simulation packages POLYMATH and GEMS. The examples are presented to illustrate the usefulness of the method in the simulation of chemical engineering processes.

  20. Terapias Cognitiva e Cognitivo-Comportamental em dependência química Cognitive and Cognitive-Behavioral Therapy for substance abuse disorders

    Directory of Open Access Journals (Sweden)

    Cláudio Jerônimo da Silva

    2004-05-01

    Full Text Available Este artigo descreve o estado atual da Terapia Cognitiva, Comportamental, Prevenção de Recaída e Treinamento de Habilidades no tratamento de usuários de drogas. O objetivo é apresentar uma revisão sobre teorias e técnicas da Terapia Cognitiva e outras abordagens que dela derivam. Terapias Cognitiva e Comportamental, bem como Prevenção da Recaída e Treinamento de Habilidades, são tratamentos limitados no tempo, orientados em uma meta, e que utilizam sessões estruturadas, assumindo, assim, uma postura diretiva e ativa. Nós salientamos algumas diferenças entre Terapia Cognitiva, Prevenção de Recaída e Treinamento de Habilidades. A Terapia Cognitiva tem seu foco prioritariamente nos pensamentos, crenças, sentimentos e circunstâncias, como base do comportamento disfuncional. A Prevenção de Recaída e o Treinamento de Habilidades baseiam-se nas teorias comportamentais, além da teoria Cognitiva. Esperamos apresentar os últimos achados científicos para ajudar o psiquiatra geral a melhorar o tratamento da dependência química.This article describes the current status of Cognitive and Behavioral Therapy as well Relapse Prevention and Coping Skill approaches applied in drug abuse treatments. The objective is show a review about theories and technique used by Cognitive Therapy and others approaches derived that, specifically Relapse Prevention and Coping Skill Treatments. Cognitive and Behavioral Therapy, Coping Skill, and Relapse Prevention are a short-time, goal-oriented and structured treatments. Thus, they assume a posture directive and active. We pointed out some difference between the theories about Cognitive Therapy, Relapse Prevention and Coping Skill. The Cognitive Therapy accentuated the focus in patient’s thought, feeling and circumstances that get in a dysfunctional behavioral. Relapse Prevention and Coping Skill are based in behavioral theories besides of the Cognitive. We, finally, look forward to introduce the

  1. Rearing system and behavioural adaptation of laying hens to furnished cages Sistema de cria e adaptação comportamental de poedeiras às gaiolas enriquecidas

    Directory of Open Access Journals (Sweden)

    Victor Fernando Büttow Roll

    2008-10-01

    Full Text Available The influences of floor and cage-rearing on behavioural adaptation to furnished cages were investigated in laying hens. Two groups of 180 Isa Brown commercial layer pullets were reared in cages (CR or floor pens (FR and transferred to furnished cages, where their behavioural adaptation was observed throughout the laying period (18-78 wks of age. At 17 weeks of age, hens were placed in one of the 36 furnished cages with 10 birds in each cage, each containing a nest box, perches, a dust bath, and abrasive strips. At 50 and 54 weeks of age, direct visual observation and video recording were used to assess hen’s behaviour. From 21 weeks of age, the dust-bath activities of leg-banded hens in eight cages per treatment were recorded. The amount of time spent walking was higher (3.5% vs. 1.8% and perching was lower (7.5% vs. 13.4% in CR hens than in FR hens (PNeste trabalho, foi avaliada a influência dos sistemas de cria (em piso e em baterias sobre a adaptação comportamental de poedeiras em gaiolas enriquecidas. Dois grupos de 180 frangas Isa brown foram criadas em baterias (CR ou em piso (FR e foram transferidas para gaiolas enriquecidas, onde a adaptação comportamental foi observada durante um ciclo completo de postura (18-78 semanas de idade. Com 17 semanas de idade, as frangas foram alojadas em 36 gaiolas enriquecidas, 10 aves por gaiolas, cada uma contendo um ninho, poleiros, banho de areia e lixas de unha. Nas semanas 50 e 54, foi utilizada observação direta e imagens de vídeo para a análise do comportamento. A partir de 21 semanas de idade, a atividade de banho de areia em galinhas marcadas com anilhas foi registrada em 8 gaiolas por tratamento. As aves CR gastaram mais tempo caminhando (3,5% vs. 1,8%, e menos tempo empoleiradas (7,5% vs. 13,4%, se comparadas com as FR (P<0,05. O número de aves presentes nos banhos de areia aumentou de 9,2% às 21 semanas para 21,4% às 72 semanas de idade, enquanto que a proporção de galinhas

  2. Universal fuzzy models and universal fuzzy controllers for discrete-time nonlinear systems.

    Science.gov (United States)

    Gao, Qing; Feng, Gang; Dong, Daoyi; Liu, Lu

    2015-05-01

    This paper investigates the problems of universal fuzzy model and universal fuzzy controller for discrete-time nonaffine nonlinear systems (NNSs). It is shown that a kind of generalized T-S fuzzy model is the universal fuzzy model for discrete-time NNSs satisfying a sufficient condition. The results on universal fuzzy controllers are presented for two classes of discrete-time stabilizable NNSs. Constructive procedures are provided to construct the model reference fuzzy controllers. The simulation example of an inverted pendulum is presented to illustrate the effectiveness and advantages of the proposed method. These results significantly extend the approach for potential applications in solving complex engineering problems.

  3. Complex Fuzzy Set-Valued Complex Fuzzy Measures and Their Properties

    Science.gov (United States)

    Ma, Shengquan; Li, Shenggang

    2014-01-01

    Let F*(K) be the set of all fuzzy complex numbers. In this paper some classical and measure-theoretical notions are extended to the case of complex fuzzy sets. They are fuzzy complex number-valued distance on F*(K), fuzzy complex number-valued measure on F*(K), and some related notions, such as null-additivity, pseudo-null-additivity, null-subtraction, pseudo-null-subtraction, autocontionuous from above, autocontionuous from below, and autocontinuity of the defined fuzzy complex number-valued measures. Properties of fuzzy complex number-valued measures are studied in detail. PMID:25093202

  4. Fuzzy PID controller combines with closed-loop optimal fuzzy reasoning for pitch control system

    Science.gov (United States)

    Li, Yezi; Xiao, Cheng; Sun, Jinhao

    2013-03-01

    PID and fuzzy PID controller are applied into the pitch control system. PID control has simple principle and its parameters setting are rather easy. Fuzzy control need not to establish the mathematical of the control system and has strong robustness. The advantages of fuzzy PID control are simple, easy in setting parameters and strong robustness. Fuzzy PID controller combines with closed-loop optimal fuzzy reasoning (COFR), which can effectively improve the robustness, when the robustness is special requirement. MATLAB software is used for simulations, results display that fuzzy PID controller which combines with COFR has better performances than PID controller when errors exist.

  5. Complex fuzzy set-valued complex fuzzy measures and their properties.

    Science.gov (United States)

    Ma, Shengquan; Li, Shenggang

    2014-01-01

    Let F*(K) be the set of all fuzzy complex numbers. In this paper some classical and measure-theoretical notions are extended to the case of complex fuzzy sets. They are fuzzy complex number-valued distance on F*(K), fuzzy complex number-valued measure on F*(K), and some related notions, such as null-additivity, pseudo-null-additivity, null-subtraction, pseudo-null-subtraction, autocontionuous from above, autocontionuous from below, and autocontinuity of the defined fuzzy complex number-valued measures. Properties of fuzzy complex number-valued measures are studied in detail.

  6. CALCULATION OF FUZZY RELIABILITYIN THE CASE OF RANDOM STRESSAND FUZZY FATIGUE STRENGTH

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    The fuzzy sets theory is introduced into the fatigue reliability analysis.The concepts of maximizing set and minimizing set are developed to decide the ordering value of each fuzzy number,and these values can be used to determine the order of the fuzzy numbers.On the basis of the works mentioned above,the membership function defining the fuzzy safety event can be calculated,and then the fuzzy reliability in the case of random stress and fuzzy fatigue strength is deduced.An example is given to illustrate the method.

  7. Nuevo modelo animal de acromatopsia

    OpenAIRE

    Zurita, Esther; Montoliu, Lluís; Fernández López, Almudena; Villa, Pedro de la; González Neira, Anna; Benítez, Javier

    2012-01-01

    [ES] La presente invención describe ratones albinos no consanguíneos HsdWin:NMRI, mutantes para el gen Gnat2, causante del fenotipo alterado de retina coneless, preferentemente una mutación Gnat2cpf13, y más preferentemente en homocigosis. Así mismo, la presente invención hace referencia al uso de dichos ratones, concretamente su uso como modelo animal para retinopatías, preferentemente acromatopsia y más preferentemente acromatopsia de tipo IV. La presente invención también hace referencia a...

  8. Nuevo modelo animal de acromatopsia

    OpenAIRE

    Zurita, Esther; Montoliu, Lluís; Fernández López, Almudena; Villa, Pedro de la; González Neira, Anna; Benítez, Javier

    2012-01-01

    La presente invención describe ratones albinos no consanguíneos HsdWin:NMRI, mutantes para el gen Gnat2, causante del fenotipo alterado de retina coneless, preferentemente una mutación Gnat2cpfl3, y más preferentemente en homocigosis. Así mismo, la presente invención hace referencia al uso de dichos ratones, concretamente su uso como modelo animal para retinopatías, preferentemente acromatopsia y más preferentemente acromatopsia de tipo IV. La presente invención ...

  9. Rodillo de enrejado Hyster, modelo

    Directory of Open Access Journals (Sweden)

    Chinchilla, M.

    1962-07-01

    Full Text Available El rodillo de enrejado Hyster, modelo D, consta de unas ruedas de 67 pulgadas de diámetro exterior, montadas en una armadura y bastidor sumamente resistentes. El enrejado que forma la superficie cilíndrica de cada rodillo consiste en barras de acero de 1,5 pulgadas de diámetro, entrelazadas para formar una malla cuadrada, con un espacio libre entre barras de 3,5x3,5 pulgadas. Las barras son de acero especial.

  10. Modelos moleculares interactivos usando Jmol

    OpenAIRE

    Herráez Sánchez, Ángel; Miró Obradors, María Jesús; Palacios Alaiz, Evangelina

    2008-01-01

    El empleo de medios informáticos para examinar de forma interactiva modelos moleculares tridimensionales presenta ventajas bien conocidas para el estudio y la enseñanza de Química, Bioquímica, Biología Molecular y otras ciencias afines (Cristalografía, Ciencia de Materiales, etc.). Jmol es un programa escrito en Java, compatible con todos los sistemas operativos y navegadores de Internet, así como con otros programas de visualización molecular anteriores. Jmol destaca por ofrecer numerosas...

  11. A fuzzy control design case: The fuzzy PLL

    Science.gov (United States)

    Teodorescu, H. N.; Bogdan, I.

    1992-01-01

    The aim of this paper is to present a typical fuzzy control design case. The analyzed controlled systems are the phase-locked loops (PLL's)--classic systems realized in both analogic and digital technology. The crisp PLL devices are well known.

  12. Fuzzy set applications in engineering optimization: Multilevel fuzzy optimization

    Science.gov (United States)

    Diaz, Alejandro R.

    1989-01-01

    A formulation for multilevel optimization with fuzzy objective functions is presented. With few exceptions, formulations for fuzzy optimization have dealt with a one-level problem in which the objective is the membership function of a fuzzy set formed by the fuzzy intersection of other sets. In the problem examined here, the goal set G is defined in a more general way, using an aggregation operator H that allows arbitrary combinations of set operations (union, intersection, addition) on the individual sets Gi. This is a straightforward extension of the standard form, but one that makes possible the modeling of interesting evaluation strategies. A second, more important departure from the standard form will be the construction of a multilevel problem analogous to the design decomposition problem in optimization. This arrangement facilitates the simulation of a system design process in which different components of the system are designed by different teams, and different levels of design detail become relevant at different time stages in the process: global design features early, local features later in the process.

  13. Mapa digital de solos: uma proposta metodológica usando inferência fuzzy Digital soil map: a methodological proposal using fuzzy inference

    Directory of Open Access Journals (Sweden)

    Claudia C. Nolasco-Carvalho

    2009-02-01

    Full Text Available Elaborou-se um mapa digital de solos de uma área na região de Mucugê, BA, com o objetivo de avaliar o uso de geotecnologias na cartografia de solos. A metodologia desenvolvida a partir do modelo de inferência para solos - SoLIM , requer o conhecimento prévio da área por um especialista em mapeamento e está alicerçada na equação dos fatores de formação do solo e no modelo de distribuição dos solos na paisagem. Os dados, advindos do Modelo Digital do Terreno - MDT, da vegetação e da geologia, foram associados ao conhecimento do pedólogo e integrados em ambiente SIG (Sistema de Informações Geográficas sob inferência fuzzy. A modelagem por lógica fuzzy permitiu apontar as incertezas e transições da cobertura pedológica e gerou um mapa digital de solo que, quando comparado com o mapa convencional da área, mostrou menor generalização no domínio de espaços e parâmetros, ou seja, um refinamento da escala, porém a aplicabilidade da metodologia depende da validação de campo e da repetição em outras áreas.A digital soil map was elaborated for an area in the region of Mucugê-BA using data integration derived from a digital elevation model (DEM of the vegetation and geology that was associated with a soil scientist's knowledge and correlated in a GIS environment (Geography Information System under fuzzy inference, as a methodological proposal. The methodology was developed and based on the soil-land inference model - SoLIM, on the soil factor equation and the soil-landscape model. The fuzzy logic is able to simulate the uncertainty and transitions that often appear in pedologic systems. The results show that the methodology allows the generation of digital soil maps with increased scale and to reduce soil classe generalizations in the space and parameter domain. However, this methodology is very dependent upon the soil expert's knowledge and accuracy of the data base. To verify the applicability of the methodology the

  14. Eficácia do tratamento cognitivo e/ou comportamental para o transtorno de ansiedade social Effectiveness of cognitive and/or behavioral therapy for social anxiety disorder

    Directory of Open Access Journals (Sweden)

    Sara Costa Cabral Mululo

    2009-12-01

    Full Text Available INTRODUÇÃO: Avaliar a eficácia do tratamento cognitivo e/ou comportamental no transtorno de ansiedade social quando comparado a outras intervenções terapêuticas, incluindo farmacoterapia. MÉTODO: Realizamos análise sistemática de todos os ensaios clínicos controlados randomizados envolvendo terapia cognitiva e/ou comportamental versus outras formas de tratamento, publicados até março de 2009, indexados nas seguintes bases de dados: MEDLINE, PsycINFO, Registro Cochrane de Ensaios Controlados, LILACS e ISI/Web of Science. RESULTADOS: Os estudos avaliados não demonstraram diferenças significativas entre a terapia cognitiva e/ou comportamental e a farmacoterapia. Esses tratamentos combinados não apresentaram maior eficácia do que as intervenções isoladamente. Quando comparada ao grupo controle, a terapia cognitiva e/ou comportamental é eficaz na redução dos sintomas de ansiedade social, tanto no seu formato padrão quanto nas novas formas de intervenção. A exceção foi o treino em habilidades sociais, que, isoladamente, não se mostrou eficaz. A terapia cognitiva e/ou comportamental também demonstrou ser superior aos outros tipos de psicoterapias. CONCLUSÃO: A terapia cognitiva e/ou comportamental mostrou-se eficaz na redução da ansiedade social em pacientes com transtorno de ansiedade social. No entanto, a heterogeneidade dos estudos avaliados, seja no que diz respeito a aspectos envolvendo o tratamento (duração do tratamento e protocolos utilizados ou os pacientes avaliados (gravidade e forma de recrutamento, dificultaram a comparação dos resultados. Novos estudos de tratamento cognitivo e/ou comportamental e novas revisões envolvendo essas abordagens são necessários para melhor avaliação de nossos achados.INTRODUCTION: To ascertain whether cognitive and/or behavioral treatment of patients with social anxiety disorder is superior in terms of efficacy than other types of therapeutic interventions, including

  15. Risco no Modelo de Internacionalização de Uppsala Risk in the Uppsala Internationalization Model

    Directory of Open Access Journals (Sweden)

    Debora Chiavegatti

    2011-09-01

    Full Text Available Este ensaio revisita a evolução do modelo comportamental de internacionalização de Uppsala desde os anos setenta e insere neste contexto a proposição gráfica de Lemos, Johanson e Vahlne (2010, onde o risco desempenha um papel central. A falta de conhecimento sobre o mercado representa a restrição mais crítica para as dificuldades envolvidas no processo de internacionalização (Lemos, Johanson e Vahlne, 2010 e está na origem do modelo comportamental que explica a internacionalização em estágios seqüenciais de aquisição de conhecimento. Na versão original, é relevante a liability of foreignness. Verifica-se uma revisão do modelo de Uppsala, em que esta perspectiva do processo de internacionalização foi revisitada em especial pela complexidade do mercado, propondo que tal movimentação não seria uma sequência de passos e etapas planejados e deliberados por uma análise racional. Na nova versão, é relevante a idéia de liability of outsidership, que se refere às redes existentes. A nova proposta da Escola de Uppsala passa a considerar a rede de relacionamentos (networks como elemento central da entrada nos mercados estrangeiros.

    This paper revisits the evolution of the Uppsala behavioral model of internationalization since the 1970s and inserts Lemos, Johanson and Vahlne’s graphic proposal in this context, where it plays a central role. The lack of knowledge about the market is the most critical restriction to the difficulties involved in the internationalization process (LEMOS; JOHANSON; VAHLNE, 2010

    and is in the origin of the behavioral model that explains internationalization in sequential stages of knowledge acquisition.

    Liability of foreignness is relevant in

  16. eficacia del modelo "La Cartuja"

    Directory of Open Access Journals (Sweden)

    José L. Arco Tirado

    2005-01-01

    Full Text Available Al panorama que caracteriza la universidad española de ausencia de recursos y servicios de apoyo psicopedagógico a los estudiantes, se responde mediante este experimento de caso único, basado en el modelo de intervención psicopedagógica breve llamado La Cartuja. Desarrollado en el Gabinete Psicopedagógico (GPP de la Universidad de Granada, se ha aplicado a docenas de estudiantes con distintos tipos de problemas (fracaso académico, abandono de estudios, ansiedad, depresión, déficit de habilidades sociales, etc. y con resultados más que satisfactorios para la mayoría de ellos. El trabajo de integración y síntesis realizado ha permitido extender el análisis funcional de la conducta, reforzándolo con componentes de la Terapia de Aceptación y Compromiso (ACT y otros conceptos de la Psicoterapia Analítica Funcional (FAP. El resultado es un modelo de terapia o intervención psicoeducativa breve con resultados académicos y clínicos significativos en estudiantes con problemas de rendimiento académico y ansiedad a los tres, seis y doce meses de seguimiento tras finalizar la intervención.

  17. Fuzzy Logic Indoor Positioning System

    Directory of Open Access Journals (Sweden)

    Roberto García Sánz

    2008-12-01

    Full Text Available The GPS system is not valid for positioning indoors, thus positioning systems are designed using Wi-Fi technology that allows location of a device inside buildings. The use of fuzzy logic is argued by the failure to find positioning systems based on this technology, which seeks toobserve how their use in this field

  18. Fuzzy C P2 spacetimes

    Science.gov (United States)

    Chaney, A.; Stern, A.

    2017-02-01

    Four-dimensional manifolds with changing signature are obtained by taking the large N limit of fuzzy C P2 solutions to a Lorentzian matrix model. The regions of Lorentzian signature give toy models of closed universes which exhibit cosmological singularities. These singularities are resolved at finite N , as the underlying C P2 solutions are expressed in terms of finite matrix elements.

  19. Rankings from Fuzzy Pairwise Comparisons

    NARCIS (Netherlands)

    Broek, van den Pim; Noppen, Joost; Mohammadian, M.

    2006-01-01

    We propose a new method for deriving rankings from fuzzy pairwise comparisons. It is based on the observation that quantification of the uncertainty of the pairwise comparisons should be used to obtain a better crisp ranking, instead of a fuzzified version of the ranking obtained from crisp pairwise

  20. Fuzzy logic controllers on chip

    OpenAIRE

    Acosta, Nelson; Simonelli, Daniel Horacio

    2002-01-01

    This paper analyzes a fuzzy logic (FL) oriented instruction set (micro)controller and their implementations on FIPSOC1. VHDL code is synthesized using a small portion of FIPSOC FPGA2. This circuits are used from the mP8051 FIPSOC built-in microcontroller to provide efficient arithmetic operations such as multipliers, dividers, minimums and maximums.

  1. Fuzzy audit risk modeling algorithm

    Directory of Open Access Journals (Sweden)

    Zohreh Hajihaa

    2011-07-01

    Full Text Available Fuzzy logic has created suitable mathematics for making decisions in uncertain environments including professional judgments. One of the situations is to assess auditee risks. During recent years, risk based audit (RBA has been regarded as one of the main tools to fight against fraud. The main issue in RBA is to determine the overall audit risk an auditor accepts, which impact the efficiency of an audit. The primary objective of this research is to redesign the audit risk model (ARM proposed by auditing standards. The proposed model of this paper uses fuzzy inference systems (FIS based on the judgments of audit experts. The implementation of proposed fuzzy technique uses triangular fuzzy numbers to express the inputs and Mamdani method along with center of gravity are incorporated for defuzzification. The proposed model uses three FISs for audit, inherent and control risks, and there are five levels of linguistic variables for outputs. FISs include 25, 25 and 81 rules of if-then respectively and officials of Iranian audit experts confirm all the rules.

  2. Fuzzy Evidence in Identification, Forecasting and Diagnosis

    CERN Document Server

    Rotshtein, Alexander P

    2012-01-01

    The purpose of this book is to present a methodology for designing and tuning fuzzy expert systems in order to identify nonlinear objects; that is, to build input-output models using expert and experimental information. The results of these identifications are used for direct and inverse fuzzy evidence in forecasting and diagnosis problem solving. The book is organised as follows: Chapter 1 presents the basic knowledge about fuzzy sets, genetic algorithms and neural nets necessary for a clear understanding of the rest of this book. Chapter 2 analyzes direct fuzzy inference based on fuzzy if-then rules. Chapter 3 is devoted to the tuning of fuzzy rules for direct inference using genetic algorithms and neural nets. Chapter 4 presents models and algorithms for extracting fuzzy rules from experimental data. Chapter 5 describes a method for solving fuzzy logic equations necessary for the inverse fuzzy inference in diagnostic systems. Chapters 6 and 7 are devoted to inverse fuzzy inference based on fu...

  3. Learning fuzzy logic control system

    Science.gov (United States)

    Lung, Leung Kam

    1994-01-01

    The performance of the Learning Fuzzy Logic Control System (LFLCS), developed in this thesis, has been evaluated. The Learning Fuzzy Logic Controller (LFLC) learns to control the motor by learning the set of teaching values that are generated by a classical PI controller. It is assumed that the classical PI controller is tuned to minimize the error of a position control system of the D.C. motor. The Learning Fuzzy Logic Controller developed in this thesis is a multi-input single-output network. Training of the Learning Fuzzy Logic Controller is implemented off-line. Upon completion of the training process (using Supervised Learning, and Unsupervised Learning), the LFLC replaces the classical PI controller. In this thesis, a closed loop position control system of a D.C. motor using the LFLC is implemented. The primary focus is on the learning capabilities of the Learning Fuzzy Logic Controller. The learning includes symbolic representation of the Input Linguistic Nodes set and Output Linguistic Notes set. In addition, we investigate the knowledge-based representation for the network. As part of the design process, we implement a digital computer simulation of the LFLCS. The computer simulation program is written in 'C' computer language, and it is implemented in DOS platform. The LFLCS, designed in this thesis, has been developed on a IBM compatible 486-DX2 66 computer. First, the performance of the Learning Fuzzy Logic Controller is evaluated by comparing the angular shaft position of the D.C. motor controlled by a conventional PI controller and that controlled by the LFLC. Second, the symbolic representation of the LFLC and the knowledge-based representation for the network are investigated by observing the parameters of the Fuzzy Logic membership functions and the links at each layer of the LFLC. While there are some limitations of application with this approach, the result of the simulation shows that the LFLC is able to control the angular shaft position of the

  4. Alterações Neurobiológicas Verificadas a partir do Tratamento com Terapia Cognitivo-comportamental no Transtorno Obsessivo-Compulsivo

    Directory of Open Access Journals (Sweden)

    Priscila Assumpção Fernandes

    Full Text Available RESUMO Hipóteses neurobiológicas sobre o Transtorno Obsessivo-Compulsivo (TOC sugerem alterações funcionais e anatômicas em determinadas áreas cerebrais relacionadas aos sintomas. Evidências indicam que a Terapia Cognitivo-Comportamental (TCC é eficaz para o tratamento do TOC e capaz de modular padrões neurais disfuncionais. O presente estudo objetivou descrever as alterações neurobiológicas promovidas pela TCC para o TOC. Realizou-se uma revisão sistemática, cuja amostra final correspondeu a cinco estudos. Em todos, houve melhora significativa do TOC e alterações neurobiológicas após a TCC, tais como redução da atividade e volume no córtex orbitofrontal, aumento da atividade no córtex cingulado anterior, tálamo e núcleo caudado. A TCC mostrou-se capaz de modular neurocircuitos envolvidos no TOC.

  5. A perspectiva cognitivo-comportamental dos aspectos psicossociais que interferem na qualidade da relação médico-paciente

    Directory of Open Access Journals (Sweden)

    Janaína Bianca Barletta

    2011-12-01

    Full Text Available Este artigo tem por objetivo abordar os aspectos psicossociais que mediam a qualidade da relação médico-paciente com base em uma concepção cognitivo-comportamental. Para tanto, é feita uma breve revisão sobre os aspectos da relação de ajuda. Ressalta-se a importância da qualidade da relação estabelecida, destacando a participação de ambos na tomada de decisão e a relação colaborativa, empática e bidirecional. Assim, as crenças, necessidades específicas e características pessoais ganham lugar de destaque. Além disso, a organização empregadora, a equipe de saúde, o meio social e os familiares vão interferir na dinâmica da relação. O suporte social e a comunicação terapêutica são outros componentes da multifatorialidade desse processo. A relação positiva permite o aparecimento de fatores de predisposição da doença, facilita o treino de habilidades assertivas de enfrentamento, a reestruturação cognitiva e a reeducação emocional, resultando na construção de respostas adaptativas a situações adversas.

  6. Tiques e habilidades sociais em um atendimento clínico comportamental - doi: 10.5102/ucs.v13i1.3213

    Directory of Open Access Journals (Sweden)

    Ludmila Zatorre Dantas

    2015-07-01

    Full Text Available Este trabalho teve como objetivo mostrar a relação entre tiques e habilidades sociais na condução de um caso clínico comportamental. Patrícia (nome fictício, de 15 anos, foi trazida por sua mãe com a queixa de apresentar tiques e timidez excessiva. Entretanto os supostos tiques não apareceram durante as sessões e foi analisado que a atenção fornecida pela mãe era o que controlava alguns de seus comportamentos. Foram realizados treino de assertividade, simulações de situações sociais, entre outras intervenções. Dessa forma os “tiques” não foram foco das intervenções e após 30 sessões foram observados vários progressos da cliente, tendo recebido alta da terapeuta. O caso mostra a importância da realização de uma análise funcional do comportamento, que fez com que a condução do caso se voltasse para o refinamento das habilidades sociais da filha e não do que foi chamado de tique pela mãe.

  7. Terapia cognitivo-comportamental em grupos de emagrecimento: o relato de uma experiência = Group cognitive behavioral therapy intervention for weight loss patients: a experience report

    Directory of Open Access Journals (Sweden)

    Neufeld, Carmem Beatriz

    2012-01-01

    Full Text Available A Terapia Cognitivo-Comportamental (TCC é apontada como uma estratégia bastante eficaz no tratamento da obesidade. Indivíduos com excesso de peso têm maior risco de desenvolver uma série de doenças e condições médicas, além de associar-se a vários estressores interpessoais. O presente trabalho tem como objetivo relatar a experiência resultante da intervenção em TCC em grupos (TCCG em participantes que visavam emagrecimento dentro de uma clínica multiprofissional. Foram realizados dez grupos com cinco participantes cada um, totalizando 50 participantes. Cada grupo teve duração de três meses, com o total de doze encontros, sendo que seis foram reservados à intervenção psicológica. Considerando o conjunto de dados qualitativos obtidos sugere que houve uma melhora clinicamente significativa no que tange as dificuldades interpessoais, ao grau de adaptação social, à autoestima, aos níveis de ansiedade, ao sentimento de bem estar das participantes e a diminuição da compulsão alimentar, além da redução objetiva do peso

  8. Lógica fuzzy e regressão logística na decisão para prática de cintilografia das paratiróides Fuzzy logic and logistic regression in the decision making for parathyroid scintigraphy study

    Directory of Open Access Journals (Sweden)

    Clóvis Arlindo de Sousa

    2006-10-01

    Full Text Available OBJETIVO: Desenvolver e comparar dois modelos matemáticos, um deles baseado em regressão logística e o outro em teoria de conjuntos fuzzy, para definir a indicação para a realização do exame cintilográfico a partir de resultados dos exames laboratoriais. MÉTODOS: Foram identificados 194 pacientes que tiveram cálcio e paratormônio séricos medidos a partir da base de registros de cintilografia de paratiróides realizadas em laboratório de diagnóstico de São Paulo, no período de janeiro de 2000 a dezembro de 2004. O modelo de regressão logística foi desenvolvido utilizando-se o software SPSS e o modelo fuzzy, o Matlab. A performance dos modelos foi comparada utilizando-se curvas ROC. RESULTADOS: Os modelos apresentaram diferenças estatisticamente significantes (p=0,026 nos seus desempenhos. A área sob a curva ROC do modelo de regressão logística foi de 0,862 (IC 95%: 0,811-0,913 e do modelo de lógica fuzzy foi 0,887 (IC 95%: 0,840-0,933. Este último destacou-se como particularmente útil porque, ao contrário do modelo logístico, mostrou capacidade de utilizar informações de paratormônio em intervalo em que os valores de cálcio mostraram-se pouco discriminantes. CONCLUSÕES: O modelo matemático baseado em teoria de conjuntos fuzzy pareceu ser mais adequado do que o baseado em regressão logística como método para decisão da realização de cintilografia das paratiróides. Todavia, sendo resultado de um exercício metodológico, inferências sobre o comportamento do objeto podem ser impróprias, dada a não representatividade populacional dos dados.OBJECTIVE: To develop and compare two mathematical models, the first one based on logistic regression and the second one on fuzzy sets theory, aiming at defining a laboratory testing-based measure of indication for submitting patients to parathyroid scintigraphy. METHODS: One-hundred and ninety-four patients with serum calcium and parathyroid hormone available were

  9. Fuzzy Prime Ideals in Fuzzy Semigroups%Fuzzy半群中的Fuzzy素理想

    Institute of Scientific and Technical Information of China (English)

    谭宜家

    2001-01-01

    探讨Fuzzy半群中Fuzzy素理想、Fuzzy完全素理想与Fuzzy理想的根的一些代数性质,证明Fuzzy半群中每一个Fuzzy理想是Fuzzy完全半素理想当且仅当它可表为一族Fuzzy完全素理想之交。%In this paper,we obtain some algebraic properties of fuzzy prime ideals,fuzzy completely prime ideals and radicals of fuzzy ideals in fuzzy semigroups,and show that a fuzzy ideal in a fuzzy simigroup is a fuzzy completely semiprime ideal if and only if it is an intersectin of a family of fuzzy completely prime ideals.

  10. An Enhanced Fuzzy Multi Criteria Decision Making Model with A proposed Polygon Fuzzy Number

    Directory of Open Access Journals (Sweden)

    Samah Bekheet

    2014-06-01

    Full Text Available Decisions in real world applications are often made under the presence of conflicting, uncertain, incomplete and imprecise information. Fuzzy multi Criteria Decision making (FMCDM approach provides a powerful approach for drawing rational decisions under uncertainty given in the form of linguistic values. Linguistic values are usually represented as fuzzy numbers. Most of researchers adopt either triangle or trapezoidal fuzzy numbers. Since triangle, intervals, and even singleton are special cases of Trapezoidal fuzzy numbers, so, for most researchers Trapezoidal fuzzy numbers are considered Generalized fuzzy numbers (GFN. In this paper, we introduce polygon fuzzy number (PFN as the actual form of GFN. The proposed form of PFN provides higher flexibility to decision makers to express their own linguistic rather than other form of fuzzy numbers. The given illustrative example ensures such ability for better handling of the FMCDM problems.

  11. Fuzzy Control Strategies in Human Operator and Sport Modeling

    CERN Document Server

    Ivancevic, Tijana T; Markovic, Sasa

    2009-01-01

    The motivation behind mathematically modeling the human operator is to help explain the response characteristics of the complex dynamical system including the human manual controller. In this paper, we present two different fuzzy logic strategies for human operator and sport modeling: fixed fuzzy-logic inference control and adaptive fuzzy-logic control, including neuro-fuzzy-fractal control. As an application of the presented fuzzy strategies, we present a fuzzy-control based tennis simulator.

  12. FUZZY STABILITY ANALYSIS OF MODE COUPLING CHATTER ON CUTTING PROCESS

    Institute of Scientific and Technical Information of China (English)

    1998-01-01

    The influence of fuzzy uncertainty factors is considered on the analysis of chatter occurring during machine tool cutting process. Using fuzzy mathematics analysis methods, a detailed discussion over fuzzy stability analysis problems is presented related to the mode coupling chatter with respect to intrinsic structure fuzzy factors, and the possibility distribution of the fuzzy stability cutting range and the confidence level expressions of the fuzzy stability cutting width are given.

  13. Compound fuzzy model for thermal performance of refrigeration compressors

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    The fuzzy method is introduced to the calculation of thermal performance of refrigeration compressors. A compound model combining classical thermodynamic theory and fuzzy theory is presented and compared with a simple fuzzy model without classical thermodynamic fundamentals. Case study of refrigeration compressors shows that the compound fuzzy model and the simple fuzzy model are both more efficient than the classical thermodynamic method. However, the compound fuzzy model is of better precision and adaptability.

  14. Enfoques de programación matemática fuzzy multiobjetivo para la planificación operativa del transporte en una cadena de suministro del sector del automóvil // Fuzzy Multiobjective Mathematical Programming Approaches for Operational Transport Planning in an Automobile Supply Chain

    Directory of Open Access Journals (Sweden)

    Ferriols, Francisco J.

    2010-01-01

    Full Text Available En este trabajo se presenta un modelo de programación matemática fuzzy multiobjetivo para la planificación del transporte a nivel operativo en una cadena de suministro. Los objetivos del modelo propuesto son la minimización del número de camiones utilizados y del inventario total, considerando como parámetro borroso las capacidades de los vehículos empleados. Se propone una metodología de resolución para transformar el modelo original en un modelo de programación lineal entera mixta con un único objetivo, aplicando diferentes enfoques recogidos en la literatura. El modelo propuesto sevalida con datos pertenecientes a una cadena de suministro real del sector del automóvil. Por último, los resultados obtenidos para cada uno de los enfoques empleados muestran la mejora aportada por el modelo propuesto respecto al procedimiento heurístico para la toma de decisiones empleado en la cadena de suministro de estudio. //In this paper, a fuzzy multiobjective mathematical programming model foroperational transport planning in a supply chain is presented. The objectives of the proposed model are the minimization of the number of used trucks and the total inventory level, by considering vehicle capacities as a fuzzy parameter. We propose a solution methodology to transform the original model into a mixed integer linear programming model with a single objective by using different approaches in the literature. The proposed model is validated with data from a real-world automobile supply chain. Finally, the results for each of the approaches show the improvement obtained by the proposed model in comparison to the heuristic procedure for decision making used in the supply chain under study.

  15. Modelos flexibles de selección de personal basados en la valoración de competencias.

    Directory of Open Access Journals (Sweden)

    Liern Carrión, Vicente

    2008-01-01

    Full Text Available Las decisiones que toman los directivos respecto a la selección de personalcondicionan fuertemente el éxito de la empresa, pues si los empleados son elegidoscorrectamente suponen una fuente de ventaja competitiva. En este trabajo presentamosalgunos modelos fuzzy de selección de personal basados en la gestión por competencias.y la comparación con las valoraciones que la empresa considera óptimas en cadacompetencia (candidato ideal. Presentamos un algoritmo que permiten establecer unaordenación, incluso cuando el candidato ideal sólo ha sido valorado parcialmente.

  16. Applications of the Fuzzy Sumudu Transform for the Solution of First Order Fuzzy Differential Equations

    Directory of Open Access Journals (Sweden)

    Norazrizal Aswad Abdul Rahman

    2015-07-01

    Full Text Available In this paper, we study the classical Sumudu transform in fuzzy environment, referred to as the fuzzy Sumudu transform (FST. We also propose some results on the properties of the FST, such as linearity, preserving, fuzzy derivative, shifting and convolution theorem. In order to show the capability of the FST, we provide a detailed procedure to solve fuzzy differential equations (FDEs. A numerical example is provided to illustrate the usage of the FST.

  17. A note on the solution of fuzzy transportation problem using fuzzy linear system

    Directory of Open Access Journals (Sweden)

    P. Senthilkumar

    2013-08-01

    Full Text Available In this paper, we discuss the solution of a fuzzy transportation problem, with fuzzy quantities. The problem is solved in two stages. In the first stage, the fuzzy transportation problem is reduced to crisp system by using the lower and upper bounds of fuzzy quantities. In the second stage, the crisp transportation problems are solved by usual simplex method. The procedure is illustrated with numerical examples.

  18. Taste Identification of Tea Through a Fuzzy Neural Network Based on Fuzzy C-means Clustering

    Institute of Scientific and Technical Information of China (English)

    ZHENG Yan; ZHOU Chun-guang

    2003-01-01

    In this paper, we present a fuzzy neural network model based on Fuzzy C-Means (FCM) clustering algorithm to realize the taste identification of tea. The proposed method can acquire the fuzzy subset and its membership function in an automatic way with the aid of FCM clustering algorithm. Moreover, we improve the fuzzy weighted inference approach. The proposed model is illustrated with the simulation of taste identification of tea.

  19. Fuzzy-TOPSIS Method with Multi-goal

    Institute of Scientific and Technical Information of China (English)

    PANG Jin-hui; ZHANG Qiang

    2009-01-01

    To develop the technique for order preference by similarity to an ideal solution,namely,TOPSIS method with multi-goal in fuzzy decision environment.Firstly,a new approach to constructing fuzzy decision matrix by Choquet integral was proposed in muhi-goal decision system.Secondly,the concepts of fuzzy positive-ideal solution and fuzzy negative-ideal solution related to the fuzzy decision matrix were given.Finally,the credibility measure was adopted to calculate the distances to fuzzy positive-ideal solution and fuzzy negative-ideal solution.The presented fuzzy-TOPSIS method embodies well both the predetermined preferences and the weights of goals.

  20. A fuzzy expert system for diabetes decision support application.

    Science.gov (United States)

    Lee, Chang-Shing; Wang, Mei-Hui

    2011-02-01

    An increasing number of decision support systems based on domain knowledge are adopted to diagnose medical conditions such as diabetes and heart disease. It is widely pointed that the classical ontologies cannot sufficiently handle imprecise and vague knowledge for some real world applications, but fuzzy ontology can effectively resolve data and knowledge problems with uncertainty. This paper presents a novel fuzzy expert system for diabetes decision support application. A five-layer fuzzy ontology, including a fuzzy knowledge layer, fuzzy group relation layer, fuzzy group domain layer, fuzzy personal relation layer, and fuzzy personal domain layer, is developed in the fuzzy expert system to describe knowledge with uncertainty. By applying the novel fuzzy ontology to the diabetes domain, the structure of the fuzzy diabetes ontology (FDO) is defined to model the diabetes knowledge. Additionally, a semantic decision support agent (SDSA), including a knowledge construction mechanism, fuzzy ontology generating mechanism, and semantic fuzzy decision making mechanism, is also developed. The knowledge construction mechanism constructs the fuzzy concepts and relations based on the structure of the FDO. The instances of the FDO are generated by the fuzzy ontology generating mechanism. Finally, based on the FDO and the fuzzy ontology, the semantic fuzzy decision making mechanism simulates the semantic description of medical staff for diabetes-related application. Importantly, the proposed fuzzy expert system can work effectively for diabetes decision support application.

  1. Combinational reasoning of quantitative fuzzy topological relations for simple fuzzy regions.

    Science.gov (United States)

    Liu, Bo; Li, Dajun; Xia, Yuanping; Ruan, Jian; Xu, Lili; Wu, Huanyi

    2015-01-01

    In recent years, formalization and reasoning of topological relations have become a hot topic as a means to generate knowledge about the relations between spatial objects at the conceptual and geometrical levels. These mechanisms have been widely used in spatial data query, spatial data mining, evaluation of equivalence and similarity in a spatial scene, as well as for consistency assessment of the topological relations of multi-resolution spatial databases. The concept of computational fuzzy topological space is applied to simple fuzzy regions to efficiently and more accurately solve fuzzy topological relations. Thus, extending the existing research and improving upon the previous work, this paper presents a new method to describe fuzzy topological relations between simple spatial regions in Geographic Information Sciences (GIS) and Artificial Intelligence (AI). Firstly, we propose a new definition for simple fuzzy line segments and simple fuzzy regions based on the computational fuzzy topology. And then, based on the new definitions, we also propose a new combinational reasoning method to compute the topological relations between simple fuzzy regions, moreover, this study has discovered that there are (1) 23 different topological relations between a simple crisp region and a simple fuzzy region; (2) 152 different topological relations between two simple fuzzy regions. In the end, we have discussed some examples to demonstrate the validity of the new method, through comparisons with existing fuzzy models, we showed that the proposed method can compute more than the existing models, as it is more expressive than the existing fuzzy models.

  2. Combinational reasoning of quantitative fuzzy topological relations for simple fuzzy regions.

    Directory of Open Access Journals (Sweden)

    Bo Liu

    Full Text Available In recent years, formalization and reasoning of topological relations have become a hot topic as a means to generate knowledge about the relations between spatial objects at the conceptual and geometrical levels. These mechanisms have been widely used in spatial data query, spatial data mining, evaluation of equivalence and similarity in a spatial scene, as well as for consistency assessment of the topological relations of multi-resolution spatial databases. The concept of computational fuzzy topological space is applied to simple fuzzy regions to efficiently and more accurately solve fuzzy topological relations. Thus, extending the existing research and improving upon the previous work, this paper presents a new method to describe fuzzy topological relations between simple spatial regions in Geographic Information Sciences (GIS and Artificial Intelligence (AI. Firstly, we propose a new definition for simple fuzzy line segments and simple fuzzy regions based on the computational fuzzy topology. And then, based on the new definitions, we also propose a new combinational reasoning method to compute the topological relations between simple fuzzy regions, moreover, this study has discovered that there are (1 23 different topological relations between a simple crisp region and a simple fuzzy region; (2 152 different topological relations between two simple fuzzy regions. In the end, we have discussed some examples to demonstrate the validity of the new method, through comparisons with existing fuzzy models, we showed that the proposed method can compute more than the existing models, as it is more expressive than the existing fuzzy models.

  3. Fuzzy weakly preopen (preclosed) function in Kubiak-Sostak fuzzy topological spaces

    Energy Technology Data Exchange (ETDEWEB)

    Zahran, A.M. [Department of Mathematics, Faculty of Science, Al azhar University, Assuit (Egypt)], E-mail: zahran15@hotmail.com; Abd-Allah, M. Azab. [Department of Mathematics, Faculty of Science, Assuit University, Assuit (Egypt)], E-mail: mazab57@yahoo.com; Abd El-Rahman, Abd El-Nasser G. [Department of Mathematics, Faculty of Science, South valley University, Qena 83523 (Egypt)], E-mail: ghareeb_nasser@yahoo.com

    2009-02-15

    In this paper, we introduce and characterize fuzzy weakly preopen and fuzzy weakly preclosed functions between L-fuzzy topological spaces in Kubiak-Sostak sense and also study these functions in relation to some other types of already known functions.

  4. Terrorism Event Classification Using Fuzzy Inference Systems

    CERN Document Server

    Inyaem, Uraiwan; Meesad, Phayung; Tran, Dat

    2010-01-01

    Terrorism has led to many problems in Thai societies, not only property damage but also civilian casualties. Predicting terrorism activities in advance can help prepare and manage risk from sabotage by these activities. This paper proposes a framework focusing on event classification in terrorism domain using fuzzy inference systems (FISs). Each FIS is a decision-making model combining fuzzy logic and approximate reasoning. It is generated in five main parts: the input interface, the fuzzification interface, knowledge base unit, decision making unit and output defuzzification interface. Adaptive neuro-fuzzy inference system (ANFIS) is a FIS model adapted by combining the fuzzy logic and neural network. The ANFIS utilizes automatic identification of fuzzy logic rules and adjustment of membership function (MF). Moreover, neural network can directly learn from data set to construct fuzzy logic rules and MF implemented in various applications. FIS settings are evaluated based on two comparisons. The first evaluat...

  5. Bayesian system reliability assessment under fuzzy environments

    Energy Technology Data Exchange (ETDEWEB)

    Wu, H.-C

    2004-03-01

    The Bayesian system reliability assessment under fuzzy environments is proposed in this paper. In order to apply the Bayesian approach, the fuzzy parameters are assumed as fuzzy random variables with fuzzy prior distributions. The (conventional) Bayes estimation method will be used to create the fuzzy Bayes point estimator of system reliability by invoking the well-known theorem called 'Resolution Identity' in fuzzy sets theory. On the other hand, we also provide the computational procedures to evaluate the membership degree of any given Bayes point estimate of system reliability. In order to achieve this purpose, we transform the original problem into a nonlinear programming problem. This nonlinear programming problem is then divided into four subproblems for the purpose of simplifying computation. Finally, the subproblems can be solved by using any commercial optimizers, e.g. GAMS or LINGO.

  6. Analysis of inventory difference using fuzzy controllers

    Energy Technology Data Exchange (ETDEWEB)

    Zardecki, A.

    1994-08-01

    The principal objectives of an accounting system for safeguarding nuclear materials are as follows: (a) to provide assurance that all material quantities are present in the correct amount; (b) to provide timely detection of material loss; and (c) to estimate the amount of any loss and its location. In fuzzy control, expert knowledge is encoded in the form of fuzzy rules, which describe recommended actions for different classes of situations represented by fuzzy sets. The concept of a fuzzy controller is applied to the forecasting problem in a time series, specifically, to forecasting and detecting anomalies in inventory differences. This paper reviews the basic notion underlying the fuzzy control systems and provides examples of application. The well-known material-unaccounted-for diffusion plant data of Jaech are analyzed using both feedforward neural networks and fuzzy controllers. By forming a deference between the forecasted and observed signals, an efficient method to detect small signals in background noise is implemented.

  7. Fuzzy associative memories for instrument fault detection

    Energy Technology Data Exchange (ETDEWEB)

    Heger, A.S. [New Mexico Univ., Albuquerque, NM (United States). Dept. of Chemical and Nuclear Engineering; Holbert, K.E.; Ishaque, A.M. [Arizona State Univ., Tempe, AZ (United States)

    1996-06-01

    A fuzzy logic instrument fault detection scheme is developed for systems having two or three redundant sensors. In the fuzzy logic approach the deviation between each signal pairing is computed and classified into three fuzzy sets. A rule base is created allowing the human perception of the situation to be represented mathematically. Fuzzy associative memories are then applied. Finally, a defuzzification scheme is used to find the centroid location, and hence the signal status. Real-time analyses are carried out to evaluate the instantaneous signal status as well as the long-term results for the sensor set. Instantaneous signal validation results are used to compute a best estimate for the measured state variable. The long-term sensor validation method uses a frequency fuzzy variable to determine the signal condition over a specific period. To corroborate the methodology synthetic data representing various anomalies are analyzed with both the fuzzy logic technique and the parity space approach. (Author).

  8. FUZZY OPTIMIZATION USING EXTENDED KALMAN FILTER

    Directory of Open Access Journals (Sweden)

    M.DIVYA

    2013-01-01

    Full Text Available Fuzzy Logic is based on the idea that in fuzzy sets each element in the set can assume a value from 0 to 1, not only 0 or 1, as in crisp set theory. The degree of membership function is defined as the gradation in the extent to which an element is belonging to the relevant sets. Optimizing the membership functions of a fuzzy system can be viewed as a system identification problem for nonlinear dynamic system. In this paper two input and one output fuzzy controller is designed for the dynamic process of aircraft. The addition of an EKF in the feedback loop improved the system response by blocking possible effects of measurement error based on Predictor-Corrector algorithm. An Extended Kalman Filter approach to optimize the membership functions of the inputs and outputs of the fuzzy controller. The performance of the fuzzy system before and after the optimization are compared, as well as the membership functions.

  9. (Fuzzy) Ideals of BN-Algebras

    Science.gov (United States)

    Walendziak, Andrzej

    2015-01-01

    The notions of an ideal and a fuzzy ideal in BN-algebras are introduced. The properties and characterizations of them are investigated. The concepts of normal ideals and normal congruences of a BN-algebra are also studied, the properties of them are displayed, and a one-to-one correspondence between them is presented. Conditions for a fuzzy set to be a fuzzy ideal are given. The relationships between ideals and fuzzy ideals of a BN-algebra are established. The homomorphic properties of fuzzy ideals of a BN-algebra are provided. Finally, characterizations of Noetherian BN-algebras and Artinian BN-algebras via fuzzy ideals are obtained. PMID:26125050

  10. Semi-Continuity of Complex Fuzzy Functions

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    This paper introduces the concept of semi-continuity of complex fuzzy functions, and discusses some of their elementary properties, such as the sum of two complex fuzzy functions of type I upper (lower)semi-continuity is type I upper (lower) semi-continuous, and the opposite of complex fuzzy functions of type I upper (lower) semi-continuity is type I lower (upper) semi-continuous. Based on some assumptions on two complex fuzzy functions of type I upper (lower) semi-continuity, it is shown that their product is type I upper (lower) semi-continuous. The paper also investigates the convergence of complex fuzzy functions. In particular, sign theorem, boundedness theorem, and Cauchy's criterion for convergence are kept. In this paper the metrics introduced by Zhang Guangquan was used. This paper gives a contribution to the study of complex fuzzy functions, and extends the corresponding work of Zhang Guangquan.

  11. Fuzzy Identities and Attribute-Based Encryption

    Science.gov (United States)

    Sahai, Amit; Waters, Brent

    We introduce a new type of Identity-Based Encryption (IBE) scheme that we call Fuzzy Identity-Based Encryption. In fuzzy IBE, we view an identity as a set of descriptive attributes. A fuzzy IBE scheme allows for a private key for an identity,ωù, to decrypt a ciphertext encrypted with an identity, ùω´, if and only if the identities ùω and ùω´are close to each other as measured by the "set overlap" distance metric. A fuzzy IBE scheme can be applied to enable encryption using biometric inputs as identities; the error-tolerance property of a fuzzy IBE scheme is precisely what allows for the use of biometric identities, which inherently will have some noise each time they are sampled. Additionally, we show that fuzzy IBE can be used for a type of application that we term "attribute-based encryption."

  12. Optical Generation of Fuzzy-Based Rules

    Science.gov (United States)

    Gur, Eran; Mendlovic, David; Zalevsky, Zeev

    2002-08-01

    In the last third of the 20th century, fuzzy logic has risen from a mathematical concept to an applicable approach in soft computing. Today, fuzzy logic is used in control systems for various applications, such as washing machines, train-brake systems, automobile automatic gear, and so forth. The approach of optical implementation of fuzzy inferencing was given by the authors in previous papers, giving an extra emphasis to applications with two dominant inputs. In this paper the authors introduce a real-time optical rule generator for the dual-input fuzzy-inference engine. The paper briefly goes over the dual-input optical implementation of fuzzy-logic inferencing. Then, the concept of constructing a set of rules from given data is discussed. Next, the authors show ways to implement this procedure optically. The discussion is accompanied by an example that illustrates the transformation from raw data into fuzzy set rules.

  13. O modelo GS-RH

    OpenAIRE

    Mendes, Maria de Lourdes de Melo Salmito

    1997-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnologico. Programa de Pós-Graduação em Engenharia de Produção Neste trabalho é proposto um modelo de Jogo de Empresas cujo desenvolvimento tem por base a integração dos jogos GS-ENE e LÍDER, desenvolvidos e implementados pelo LJE (Laboratório de Jogos de Empresas) da Universidade Federal de Santa Catarina. A metodologia utilizada é a observação direta e a análise de conteúdo quanto à estrutura e à dinâmica básica do...

  14. Advanced Control Techniques with Fuzzy Logic

    Science.gov (United States)

    2014-06-01

    AFRL-RQ-WP-TR-2014-0175 ADVANCED CONTROL TECHNIQUES WITH FUZZY LOGIC James E. Combs Structural Validation Branch Aerospace Vehicles...TECHNIQUES WITH FUZZY LOGIC 5a. CONTRACT NUMBER In-house 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 62201F 6. AUTHOR(S) James E. Combs...unlimited. 13. SUPPLEMENTARY NOTES PA Case Number: 88ABW-2014-3281; Clearance Date: 09 Jul 2014. 14. ABSTRACT Research on the Fuzzy Logic control

  15. Investment Portfolio Evaluation by the Fuzzy Approach

    Directory of Open Access Journals (Sweden)

    Lambovska Maya

    2011-09-01

    Full Text Available This paper presents a new fuzzy approach for the evaluation of investment portfolio, where the approach is viewed by the authors as a sub-phase of the management process of these portfolios. The approach defines the mutual and delayed effects among the significant variables of the investment portfolio. The evaluation of the effects is described as fuzzy trapezoidal numbers and they are aggregated by mathematical operations with incidence matrices and fuzzy functions “experton”.

  16. Fuzzy Law and the Boundaries of Secularism

    Directory of Open Access Journals (Sweden)

    W Menski

    2010-12-01

    Full Text Available The author delivered a speech at a Religare Conference. Showing his distaste for fuzzy law, he argues that "moderate secularism" is not merely another fuzzy concept, but it is "super-fuzzy", and that lawyers claiming to love certainty "have a tendency to sit in judgment over matters and even pre-judge things they know little about, including legal pluralism" leading to much irritation.

  17. Fuzzy Functional Dependencies and Bayesian Networks

    Institute of Scientific and Technical Information of China (English)

    LIU WeiYi(刘惟一); SONG Ning(宋宁)

    2003-01-01

    Bayesian networks have become a popular technique for representing and reasoning with probabilistic information. The fuzzy functional dependency is an important kind of data dependencies in relational databases with fuzzy values. The purpose of this paper is to set up a connection between these data dependencies and Bayesian networks. The connection is done through a set of methods that enable people to obtain the most information of independent conditions from fuzzy functional dependencies.

  18. Fuzzy Clustering of Multiple Instance Data

    Science.gov (United States)

    2015-11-30

    NO. 0704-0188 3. DATES COVERED (From - To) - UU UU UU UU 10-03-2016 Approved for public release; distribution is unlimited. Fuzzy Clustering of...RETURN YOUR FORM TO THE ABOVE ADDRESS. University of Louisville 2301 S. Third Street Jouett Hall Louisville, KY 40208 -1838 ABSTRACT Fuzzy Clustering ...and identify K target concepts simultaneously. The proposed algorithm, called Fuzzy Clustering of Multiple Instance data (FCMI), is tested and

  19. Fuzzy multiple linear regression: A computational approach

    Science.gov (United States)

    Juang, C. H.; Huang, X. H.; Fleming, J. W.

    1992-01-01

    This paper presents a new computational approach for performing fuzzy regression. In contrast to Bardossy's approach, the new approach, while dealing with fuzzy variables, closely follows the conventional regression technique. In this approach, treatment of fuzzy input is more 'computational' than 'symbolic.' The following sections first outline the formulation of the new approach, then deal with the implementation and computational scheme, and this is followed by examples to illustrate the new procedure.

  20. New Definition and Properties of Fuzzy Entropy

    Institute of Scientific and Technical Information of China (English)

    Qing Ming; Qin Yingbing

    2006-01-01

    Let X = (x1,x2 ,…,xn ) and F(X) be a fuzzy set on a universal set X. A new definition of fuzzy entropy about a fuzzy set A on F(X), e*, is defined based on the order relation "≤" on [0,1/2] n. It is proved that e* is a σ-entropy under an additional requirement. Besides, some entropy formulas are presented and related properties are discussed.