Adaptive Estimation Using Multiagent Network Identifiers With Undirected and Directed Graph Topologies

2013 ◽  
Vol 136 (2) ◽  
Author(s):  
Teymur Sadikhov ◽  
Michael A. Demetriou ◽  
Wassim M. Haddad ◽  
Tansel Yucelen
Keyword(s):  
Directed Graph ◽  
Adaptive Estimation ◽  
Parameter Estimate ◽  
The State ◽  
Adaptive Observer ◽  
Parameter Estimates ◽  
Communication Architecture ◽  
Adaptive Identifier ◽  
The Mean ◽  
Additive Term

In this paper, we present an adaptive estimation framework predicated on multiagent network identifiers with undirected and directed graph topologies. Specifically, the system state and plant parameters are identified online using N agents implementing adaptive observers with an interagent communication architecture. The adaptive observer architecture includes an additive term which involves a penalty on the mismatch between the state and parameter estimates. The proposed architecture is shown to guarantee state and parameter estimate consensus. Furthermore, the proposed adaptive identifier architecture provides a measure of agreement of the state and parameter estimates that is independent of the network topology and guarantees that the deviation from the mean estimate for both the state and parameter estimates converge to zero. Finally, an illustrative numerical example is provided to demonstrate the efficacy of the proposed approach.

Observer Based Adaptive Estimation/Cancellation of Unmatched Sinusoidal Disturbances in Known LTI Systems by State Derivative Measurement

2015 ◽  
Author(s):  
Halil Ibrahim Basturk
Keyword(s):  
Closed Loop ◽  
Linear Time ◽  
Adaptive Estimation ◽  
Original System ◽  
Feedback System ◽  
Open Loop ◽  
The State ◽  
Adaptive Observer ◽  
Order System ◽  
Linear Time Invariant

In this paper, an adaptive observer and backstepping controller are designed to cancel and estimate sinusoidal disturbances forcing a linear time-invariant by using only the measurements of the state-derivatives. The parametrization of the sinusoidal disturbance as the output of a known feedback system with an unknown output vector that depends on unknown disturbance parameters with the necessary filter designs enables to approach the problem as an adaptive control problem. An observer is designed for the unmeasured virtual input to apply a backstepping procedure which handles the unmatched disturbance and input condition. Firstly, it is shown that the disturbance and the unmeasured actuator state are observed perfectly in the open loop case. Secondly, the closed loop case is considered and it is proven that the equilibrium of the closed-loop adaptive system is stable and the state of the considered original system converge to zero as t → ∞ with perfect disturbance estimation. The effectiveness of the controller and the observers are illustrated with a simulation example of a third order system.

First passage time for the state of exact chemical equilibrium

1980 ◽  
Vol 45 (3) ◽  
pp. 777-782 ◽  
Author(s):  
Milan Šolc
Keyword(s):  
Chemical Equilibrium ◽  
First Passage Time ◽  
Passage Time ◽  
The State ◽  
Recurrence Time ◽  
First Passage ◽  
First Order ◽  
The Mean ◽  
Passage Times ◽  
Number Of Particles

The establishment of chemical equilibrium in a system with a reversible first order reaction is characterized in terms of the distribution of first passage times for the state of exact chemical equilibrium. The mean first passage time of this state is a linear function of the logarithm of the total number of particles in the system. The equilibrium fluctuations of composition in the system are characterized by the distribution of the recurrence times for the state of exact chemical equilibrium. The mean recurrence time is inversely proportional to the square root of the total number of particles in the system.

scholarly journals Genetic gain in the breeding program of common beans at IAC from 1989 to 2007

2010 ◽  
Vol 10 (4) ◽  
pp. 329-336 ◽  
Author(s):  
Alisson Fernando Chiorato ◽  
Sérgio Augusto Morais Carbonell ◽  
Roland Vencovsky ◽  
Nelson da Silva Fonseca Júnior ◽  
José Baldin Pinheiro
Keyword(s):  
Grain Yield ◽  
Common Bean ◽  
Genetic Gain ◽  
Grain Quality ◽  
The State ◽  
Breeding Program ◽  
Common Beans ◽  
The Common ◽  
The Mean ◽  
Second Period

The goal of the present work was to evaluate the genetic gain obtained in grain yield for the common bean genotypes from 1989 until 2007, at the Instituto Agronômico de Campinas, in the state of São Paulo. Genetic gain has been separated into two research periods; the first, from 1989 to 1996, and the second, from 1997 to 2007. In the first period, a genetic gain of 1.07 % per year was obtained, whereas for the second period, the gain was zero. However, the mean yield of the evaluated lines was approximately 1000 kg ha-1 superior to the figures obtained in the first period. The main cause for the absence of genetic gain in the second period is that the focus of the breeding program was changed to grain quality. The individualized analysis of the genotypes with carioca grains in the second period indicated the lack of genetic gain during the investigated period.

scholarly journals Differences in phosphatemia and frequency of consumption of dietary sources of phosphorus in hemodialysis patients in southern and northern Brazil

2019 ◽  
Vol 41 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Fabiana Baggio Nerbass ◽  
Edcléia Regina Canzi ◽  
Renata dos Anjos Araujo ◽  
Dyane Corrêa ◽  
Rafaela Gonzaga dos Santos ◽  
...  
Keyword(s):  
Total Sample ◽  
Inorganic Phosphorus ◽  
Cross Sectional Study ◽  
The State ◽  
Cross Sectional ◽  
Significant Difference ◽  
Phosphorus Sources ◽  
Northern Brazil ◽  
The Mean ◽  
Pork Sausages

Abstract Introduction: Hyperphosphatemia is associated with unfavorable outcomes, and the percentage of patients presenting with this condition in hemodialysis (HD) in kidney foundation units in the state of Santa Catarina (SC) is historically higher than that of patients in the state of Tocantins (TO). Objective: To assess the frequency of consumption of the main dietary sources of phosphorus and to compare them between the two states. Methodology: A cross-sectional study was carried out involving 123 patients, 66 of SC and 57 of TO: 52% were men, average age was 46.9 ± 15.7 years, and mean HD time 48 (57-71) months. A food frequency questionnaire (FFQ) with 33 items that are dietary sources of phosphorus was applied. A consumption score was calculated for sources of organic, inorganic, and total phosphorus, and the six-month average of phosphatemia was obtained. Results: The mean phosphatemia of SC patients was higher (6.2 ± 1.5 vs 4.7 ± 1.3 mg/dL, p <0001) than TO patients, as well as the prevalence of hyperphosphatemia (62% vs 28%; p <10001). In the total sample, the foods most frequently consumed were milk and beans. Comparing the frequency of consumption between the two states, a significant difference was found in 17 items. In TO, beef and beans were the foods most frequently consumed, and in SC, fourteen other items of the FFQ (pork, sausages, dairy products, etc.) were the most frequently consumed. Phosphatemia correlated with the frequency of consumption of inorganic phosphorus sources. Conclusion: the frequency of consumption of several items was different between the states, and this explains the differences in phosphatemia between the two regions.

scholarly journals Judicial demand of medications through the Federal Justice of the State of Paraná

2017 ◽  
Vol 15 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Renato Mitsunori Nisihara ◽  
Ana Carolina Possebom ◽  
Luiza de Martino Cruvinel Borges ◽  
Ana Claudia Athanasio Shwetz ◽  
Fernanda Francis Benevides Bettes
Keyword(s):  
Cross Sectional Study ◽  
The State ◽  
Brand Name ◽  
Sectional Study ◽  
Cross Sectional ◽  
The Public ◽  
Online System ◽  
Broad Variety ◽  
The Mean ◽  
Mean Time

ABSTRACT Objective To describe the profile of lawsuits related to drug requests filled at the Federal Justice of the State of Paraná. Methods A cross-sectional study, and the data were obtained through consulting the lawsuits at the online system of the Federal Justice of Paraná. Results Out of 347 lawsuits included in the study, 55% of plaintiffs were women, with a median age of 56 years. Oncology was the field with more requests (23.6%), and the highest mean costs. A wide variety of diseases and broad variety of requested drugs were found in the lawsuits. Approximately two-thirds of them were requested by the brand name, and the most often requested drugs were palivizumab and tiotropium bromide. Only 14.5% of the requested medicines were registered in the National Medication Register. The Public Defender’s Office filled actions in 89.6% of cases and all lawsuits had an interim relief. The mean time for approval was 35 days and 70% of requests were granted. Conclusion Oncology was the field with the highest demand for medicines at the Federal Justice of Paraná in 2014. A great variety of medications was requested. The Public Defender´s Office represented most lawsuits. All demands had an interim relief, and the majority of requests were granted, within an average of 35 days.

scholarly journals Epidemiological profile and postoperative complications of women undergoing gynecological surgery in a reference center in the northern brazilian legal amazon

2015 ◽  
Vol 42 (6) ◽  
pp. 372-375 ◽  
Author(s):  
Sônia Maria Coelho ◽  
Elizabeth de La Trinidad Castro Perez ◽  
Cynthia Dantas de Macedo Lins ◽  
Mariano Tamura Vieira Gomes ◽  
Zsuzsanna Illona Katalin de Jármy Di Bella ◽  
...  
Keyword(s):  
Pap Smear ◽  
Basic Education ◽  
The State ◽  
Complication Rates ◽  
Common Procedure ◽  
The Mean ◽  
State Capital ◽  
Sling Placement ◽  
Epidemiological Profile ◽  
Intraepithelial Lesions

Objective: To evaluate the epidemiological profile and the operative complications of patients undergoing gynecological operations for benign diseases in a tertiary public hospital in the state of Roraima, Brazil. Methods: We conducted a retrospective survey through the analysis of 518 records of patients submitted to gynecological operations between January and June 2012. We included the three major operations during this period (n = 175): hysterectomy, colpoperineoplasty and suburethral sling placement. We excluded 236 cases of tubal ligation and 25 cases where it was not possible to access to medical records. Results: The mean age was 47.6 years; the education level of most patients was completed junior high (36.6%); 77% were from the State capital, 47.4% were in stable relationships and 26.3% were housewives. The majority of patients had given birth three or more times (86.6%), with previous vaginal delivery in 50.2%, and cesarean delivery, 21%. The main diagnostic indications for surgical treatment were uterine myoma (46.3%), urinary incontinence (27.4%) and genital dystopias (17.7%). We found three cases (1.7%) of high-grade intraepithelial lesions on Pap smear. The most common procedure was total hysterectomy (19.8%), 15.5% vaginally. The most common complication was wound infection (2.2%). Conclusion: Women undergoing gynecological operations due to benign disease had a mean age of 47 years, most had levels of basic education, came from the capital, were in stable relationships, predominantly housewives, multiparous and showed low operative complication rates.

scholarly journals Preceptors in Medical Residency Programs: Epidemiological Profile and Pedagogic Training

2020 ◽  
Vol 44 (4) ◽  
Author(s):  
Aderval de Melo Carvalho Filho ◽  
Almira Alves dos Santos ◽  
Rozangela Maria de Almeida Fernandes Wyszomirska ◽  
Isabella Costa Figueiredo Medeiros
Keyword(s):  
Health Care Professionals ◽  
The State ◽  
Public Institution ◽  
Medical Residency ◽  
Residency Programs ◽  
Service Training ◽  
The Mean ◽  
Definition Of ◽  
Epidemiological Profile ◽  
Mean Time

Abstract: Introduction: Medical Residency is a specialization course characterized as in-service training, considered in Brazil as the gold standard in the development of specialist physicians’ training. The medical residency preceptorship is an activity carried out by a specialist physician, responsible for monitoring resident physicians. However, there is neither a definition of the main requirements for such a preceptor, nor of his/her academic background to carry out the due teaching training, and it was possible to notice a relative lack of preparation regarding the pedagogical aspects. Methods: Descriptive study based on a quantitative approach, comprising 200 preceptors, of both genders, from medical residency programs in Maceió, state of Alagoas, Brazil. Results: The mean age was 43.31 ± 10.31 years, with a slight majority of female participants (52.5%). The mean time since graduation was 19.5 ± 10.58 years, and 83% of the participants had graduated in the state of Alagoas. Moreover, 78.5% said they had their Medical Residency certification, with an increased trend of public institution preceptors getting their degree at the stricto sensu level. The mean time of their completed postgraduate course was 12.63 ± 10.87 years and 7.07 ± 6.99 years being a preceptor. Only 19% mentioned they had some qualification for exercising the preceptorship, and 29.5% work as the teachers at the undergraduate level. The state of Alagoas has followed the expansion of the Residency programs, justifying the mean age found, similar to other studies. The majority of female participants can be associated with the feminization of health care professionals. The high percentage of preceptors with medical residency qualification is in accordance with Resolution n. 4/1978. We found experienced preceptors, but some authors differed. The low percentage of preceptors with qualification for exercising preceptorship indicates low interest and lack of available training. Conclusion: This study population is characterized as being young, and most are females. They have had long professional experience, and most have graduated in the state of Alagoas. There is a predominance of medical residency as their main qualification, and few of them have had training in the field. Finally, preceptors from public institutions have mostly got their degrees at the stricto sensu level.

scholarly journals Community Mental Health Care In Mexico: A Look At The State Of Jalisco, Mexico

2020 ◽  
Author(s):  
Jaime Carmona-Huerta ◽  
David Cardona-Muller ◽  
Sol Durand-Arias ◽  
Rodriguez Allen ◽  
Carmen Guarner-Catalá ◽  
...  
Keyword(s):  
Mental Health ◽  
Health Care ◽  
Community Mental Health ◽  
Mental Health Care ◽  
Transportation Cost ◽  
The State ◽  
Community Mental Health Care ◽  
Health Networks ◽  
Prolonged Stay ◽  
The Mean

Abstract Background: Access to mental health care is a worldwide public health challenge. In Mexico an unacceptably high percentage of the population with mental disorders does not receive the necessary treatment, which is mainly due to the lack of access to mental health care. The community mental health care model was created and has been implemented to improve this situation. In order to properly plan and implement this model a precise situational diagnosis of the mental health care network is required, thus this is a first approach to evaluate the community mental health networks in the state of Jalisco. Methods: Two components from the EvaRedCom–TMS instrument were used including a general description and accessibility of the community mental health care network. A geographic and economic accessibility evaluation was carried out for the different regions of the state ranging from scattered rural to urban communities using information gathered from health institutions, telephone interviews and computer applications. Results: Jalisco’s community mental health network includes a total of 31 centers and 0.64 mental health workers for every 10,000 inhabitants >15 years of age. The mean transportation cost required to access mental health care was 16.25 USD. The time needed to reach the closest mental health center in 7 of the 13 analyzed regions was more than 30 minutes and the mean time required to reach a prolonged stay center was 172.7 minutes with transportation cost of 22.3 USD. Some marginalized regions in the state have a mean 114 minutes required to reach the closest mental health care center and 386 minutes to reach a prolonged stay center. Conclusions: This first approach to evaluate the mental health networks in Mexico showed that there are multiple barriers to access its care including an unfavorable number of human resources, long distances and high costs. The identification of Jalisco’s mental health network deficiencies is the first step towards establishing a properly planned community mental health care model within the country.

scholarly journals Perfil sociodemográfico de árbitros de futebol recém-formados no Rio de Janeiro

2017 ◽  
Vol 86 (4) ◽  
Author(s):  
Rian Quintes Bonifácio Costa ◽  
Leandro Lima Silva ◽  
Carlos Elias Pimentel ◽  
Erik Salum de Godoy ◽  
Dirceu Ribeiro Nogueira da Gama ◽  
...  
Keyword(s):  
Higher Education ◽  
Physical Education ◽  
Rio De Janeiro ◽  
The State ◽  
Sociodemographic Characteristics ◽  
Cross Sectional ◽  
Education Professionals ◽  
Sociodemographic Profile ◽  
The Mean ◽  
Self Administered Questionnaire

Introdução: No Brasil, o árbitro de futebol tem a necessidade de exercer uma profissão paralelamente ao exercício da arbitragem, e há uma carência de estudos que tenham procurado descrever as características sociodemográficas do árbitro de futebol.Objetivo: O objetivo do presente estudo foi descrever e analisar as características sociodemográficas dos árbitros de futebol.Métodos: Estudo transversal observacional, do qual participaram 81 inscritos no curso de árbitro de futebol no estado do Rio de Janeiro, no ano de 2013 e 2014. Utilizou-se um questionário autopreenchível, com informações requeridas pelo banco de dados da Escola de Arbitragem de Futebol do Rio de Janeiro, com questões sobre: idade, gênero, grau de instrução e profissão.Resultados: A média de idade foi de 23,06. A maioria era do sexo masculino (81,5%), a idade variou entre 18-31 anos, com média de 23,06 (±3,12). Verificou-se que (76,5%) havia concluído o ensino médio, e (23,55%) o ensino superior, porém isso não foi significante estatisticamente. Não houve correlação dos níveis de escolaridade com a profissão. Verificou-se 26 profissões diferentes e um árbitro desempregado, sendo (43,2%) eram apenas estudantes e sem profissão. Dos 20 que tinham o ensino superior, 10 eram graduados em Educação Física e a diferença foi significativa (p<0,05).Conclusão: Os árbitros recém-formados que chegam ao quadro do estadual, na maioria são do sexo masculino, com menos de 25 anos de idade e que ainda não concluíram o ensino superior. Grande parte destes são profissionais de Educação Física. Os árbitros no Brasil exercem outras atividades profissões, além da arbitragem e, paralelamente, preparam-se física e psicologicamente para a arbitragem. Sociodemographic Profile of New Trained Soccer Referees in Rio de Janeiro Introduction: In Brazil, soccer referee has the need to practice a profession in parallel to the arbitration exercise, and there is a lack of studies that have tried to describe the sociodemographic characteristics of the football referee.Objective: The objective of the present study was to describe and analyze the sociodemographic characteristics of soccer referees.Methods: A cross-sectional observational study was carried out, in which 81 participants enrolled in the soccer referee course in the state of Rio de Janeiro, in the year 2013 and 2014. A self-administered questionnaire was used, with information required by the database of the School of Arbitration of Football of Rio de Janeiro, with questions about: age, gender, degree of education and profession.Results: The mean age was 23.06. The majority were male (81.5%), age ranged from 18-31 years, with a mean of 23.06 (± 3.12). It was verified that (76.5%) had finished high school, and (23.55%) higher education, but this was not statistically significant. There was no correlation between levels of schooling and the profession. There were 26 different professions and one unemployed arbitrator, being (43.2%) only student and without profession. Of the 20 who had higher education, 10 were graduated on Physical Education and this difference was significant.Conclusion: The newly formed referees who reach the state board, most of whom are male, under 25 years of age and have not yet completed higher education. Most of them are Physical Education professionals. The referees in Brazil perform other professions, besides the arbitration and, in parallel, prepare themselves physically and psychologically for the arbitration.

scholarly journals Relationship between biomass and parasite density of Mediorhynchus emberizae (Acanthocephala: Gigantorhynchidae) parasites of Paroaria dominicana (Passeriformes: Emberizidae) of the State of Bahia, Brazil

2008 ◽  
Vol 17 (2) ◽  
pp. 118-121
Author(s):  
Adriano R. Carvalho ◽  
Sueli Souza-Lima ◽  
Luiz E. R. Tavares ◽  
José L. Luque
Keyword(s):  
Small Intestine ◽  
Parasite Density ◽  
The State ◽  
Metazoan Parasites ◽  
Density Dependent ◽  
Parasite Intensity ◽  
The Mean

During the study of the metazoan parasites of Paroaria dominicana (Linnaeus, 1758), eight infrapopulations of Mediorhynchus emberizae (Rudolphi, 1819), were collected in the medium third of the small intestine, with parasite intensities ranging from one to ten specimens. Differences among the average values of the biomass, volume of the eggs, volume of the testicles and the parasite density of the infrapopulations were statistically tested in order to detect variations of these parameters in function of parasite density. Was observed that the acanthocephalans biomass increased with the volume of the intestine and also that the parasite density increased with the parasite intensity in the infrapopulations. It was verified that the increase of the parasite intensity was accompanied by the decrease of the mean biomass of the parasites. Decrease of the volume of the eggs was verified with the increase of the density and of the parasite intensity. The results of the present work could suggested the occurrence of density-dependent factors and the decrease of testicles volume and the biomass of the males with the increase of the parasite density in the infrapopulations of M. emberizae in the intestine of P dominicana.

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