Constructing a multi-agent system for discovering the meaning over natural-language collaborative conversations

Abstract

The present paper proposes two controllers for solving a consensus problem to a given desired position of networks composed of a class of under actuated mechanical systems: flexible joints robots. One of the controllers makes use of joint (motor) velocity signals while the other only uses joint positions. The only assumption on the directed and weighted interconnection graph is that it is connected. Further, the interconnection may induce variable time-delays. The paper presents some experiments, using three 3-Degrees of Freedom manipulators, which show the performance of the proposed approaches. " 2013 IEEE.",,,,,,"10.1109/IROS.2013.6697208",,,"http://hdl.handle.net/20.500.12104/40311","http://www.scopus.com/inward/record.url?eid=2-s2.0-84893790719&partnerID=40&md5=77f0bf586aa39cf7bd530c2f04a32b66",,,,,,,,"IEEE International Conference on Intelligent Robots and Systems",,"5878

5883",,,,"Scopus",,,,,,,,,,,,"Consensus of networks of nonidentical robots with flexible joints, variable time-delays and immeasurable velocities",,"Conference Paper" "44850","123456789/35008",,,,"Guerra García, Ernesto",,"2009",,"La actual crisis económica mundial presenta características diferenciadoras de las demás crisis que México ha tenido en las décadas pasadas. El ingrediente adicional es que ésta nueva dinámica económica proviene principalmente de los Estados Unidos de América; la crisis económica ha afectado significativamente al sector manufacturero maquilador del país, que desde hace una década presentaba ya signos inequevocos de las dificultades económicas que se avecinaban; para contrarrestarla, las estrategias principales de Delphi en Sinaloa han sido: la reducción de riesgos, la diversificación, la concentración y la reducción de costos.",,,,,,,,"0252-9521","http://hdl.handle.net/20.500.12104/43071","http://132.248.9.1:8991/F/T2YHQN5JKYSPCIP3SAPK3TB1KGTDDEFCSVNH496MXCXGEJUB2B-02751?func=full-set-set&set_number=025047&set_entry=000523&format=999",,"Español",,,,"2",,"Ciencias económicas",,"169-181",,"27",,"CLASE

PERIODICA",,,,,,,,"Empresas",,,,"Estrategias de la industria maquiladora Delphi en Sinaloa para enfrentar la crisis económica de 2007-2009",,"journalArticle" "42122","123456789/35008",,"Gutiérrez-Amavizca, B.E., Division of Genetics, Biomedical Research Center of the West, IMSS, Sierra Mojada 800, Zipcode 44340, Guadalajara, Jalisco, Mexico, Human Genetics, University Center of Health Sciences, University of Guadalajara, Guadalajara, Mexico; Orozco-Castellanos, R., Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Mexico; Ortíz-Orozco, R., Division of Genetics, Biomedical Research Center of the West, IMSS, Sierra Mojada 800, Zipcode 44340, Guadalajara, Jalisco, Mexico; Padilla-Gutiérrez, J., Department of Clinics, University Center of Health Sciences, University of Guadalajara, Guadalajara, Mexico; Valle, Y., Department of Clinics, University Center of Health Sciences, University of Guadalajara, Guadalajara, Mexico; Gutiérrez-Gutiérrez, N., Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Mexico; García-García, G., Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Mexico; Gallegos-Arreola, M., Division of Molecular Medicine, Biomedical Research Center of the West, IMSS, Guadalajara, Jalisco, Mexico; Figuera, L.E., Division of Genetics, Biomedical Research Center of the West, IMSS, Sierra Mojada 800, Zipcode 44340, Guadalajara, Jalisco, Mexico, Human Genetics, University Center of Health Sciences, University of Guadalajara, Guadalajara, Mexico",,"Gutierrez-Amavizca, B.E.

Orozco-Castellanos, R.

Ortiz-Orozco, R.

Padilla-Gutierrez, J.

Valle, Y.

Gutierrez-Gutierrez, N.

García-García, G.

Gallegos-Arreola, M.

Figuera, L.E.",,"2013",,"Oxidative stress is increased in chronic kidney disease, owing to an imbalance between the oxidative and antioxidant pathways as well as a state of persistent hyperhomocysteinemia. The enzymes glutathione S-transferases (GSTs) and methylenetetrahydrofolate reductase (MTHFR) are implicated in the regulation of these pathways. This study investigates the association between polymorphisms in the Glutathione S-transferase Mu 1 (GSTM1), glutathione S-transferase theta 1 (GSTT1), and MTHFR genes and end-stage renal disease (ESRD) of unknown etiology in patients in Mexico. A Case-control study included 110 ESRD patients and 125 healthy individuals. GSTM1 and GSTT1 genotypes were determined using the multiplex polymerase chain reaction (PCR). The MTHFR C677T polymorphism was studied using a PCR/restriction fragment length polymorphism method. In ESRD patients, GSTM1 and GSTT1 null genotype frequencies were 61% and 7% respectively. GSTM1 genotype frequencies differed significantly between groups, showing that homozygous deletion of the GSTM1 gene was associated with susceptibility to ESRD of unknown etiology ( P = 0.007, odds ratios = 2.05, 95% confidence interval 1.21-3.45). The MTHFR C677T polymorphism genotype and allele distributions were similar in both groups ( P > 0.05), and the CT genotype was the most common genotype in both groups (45.5% and 46.6%). Our findings suggest that the GSTM1 null polymorphism appears to be associated with the ESRD of unknown etiology in patients in Mexico.",,,,,,"10.4103/0971-4065.120342",,,"http://hdl.handle.net/20.500.12104/40343","http://www.scopus.com/inward/record.url?eid=2-s2.0-84887545928&partnerID=40&md5=94604039f3214d701d5d114532ebb561

http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&D=prem&AN=24339523",,,,,,"6",,"Indian Journal of Nephrology",,"438

443",,"23",,"Scopus

MEDLINE",,,,,,"End-stage renal disease; Glutathione S-transferases; Methylenetetrahydrofolate reductase; Polymorphism",,,,,,"Contribution of GSTM1, GSTT1, and MTHFR polymorphisms to end-stage renal disease of unknown etiology in Mexicans",,"Article" "42105","123456789/35008",,"Casillas, L., University of Guadalajara, Department of Computer Sciences, Av. Revolucion 1500, 44840 Guadalajara, Mexico; Daradoumis, T., Open University of Catalonia, Department of Information Sciences, Rambla Poblenou 156, 08018 Barcelona, Spain",,"Casillas, L.

Daradoumis, T.",,"2009",,"On the one hand, natural language is the main communication media for humans. It has a complex construction, based on the diversity of meaning for words and expressions according to the context. On the other hand, computers are not prepared to handle this ambiguity. Our work aims at presenting a multi-agent approach for dealing with the problem of discovering the meaning of expressions written in Spanish, based on a flexible recovery system and Bayesian principles. At a first stage, agents are supposed to identify the role of the words composing a sentence. At a second stage, a second set of agents is ready to coordinate among them in order to assemble a meaning. Our research forms part and contributes to the analysis of collaborative conversations among participants in a web-based collaborative learning environment. " 2009 Springer-Verlag Berlin Heidelberg.