Carlos Eduardo

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Papers by Carlos Eduardo

Big Data Analytics for Predictive Maintenance Modeling: Challenges and Opportunities

by Carlos Eduardo and D. Manguinho

Day 3 Thu, October 29, 2015, 2015

Big data analytics, applied in the industry to leverage data collection, processing and analysis,... more Big data analytics, applied in the industry to leverage data collection, processing and analysis, can allow a better understanding of production system's abnormal behavior. This knowledge is essential for the adoption of a proactive maintenance approach instead of conventional time-based strategies, leading to a paradigm shift towards Condition-Based Maintenance (CBM) since decision is now based on the usage of a huge, diverse, and dynamic amounts of data as a means to optimize operational costs. This paper reports an investigation of the emerging aspects in the design and implementation of big data analytics solutions for offshore installations in order to allow predictive maintenance practices. Condition-based maintenance focuses on performing interventions based on the actual and future states (health) of a system by monitoring the underlying deterioration processes. One of the building blocks of a CBM design and implementation is the prognostic approach/system, which aims to...

Direct Cost Of Cancer Patients On Brazilian Hospital And Medicines (Chemotherapy And Palliative Care)

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12041-Agroecologia no contexto da formação em processo: a experiência do Pré-Assentamento “Márcia Cordeiro Leite”, Brasília-DF

Major proteins of the ram seminal plasma: attributes and interaction with the sperm membrane

by M. Van Tilburg and Carlos Eduardo

Estudo da reologia e da permeabilidade de argamassas de cal hidratada e cimento Portland III e IV

Enhancement of the photodynamic therapy effects on Streptococcus Mutans biofilm

Planning and Scheduling the Operation of a Very Large Oil Pipeline Network

Lecture Notes in Computer Science, 2008

A Recommender System for Predicting User Engagement in Twitter

Proceedings of the 2014 Recommender Systems Challenge, 2014

The RecSys Challenge is a traditional competition among Recommender Systems' (RS) researchers... more The RecSys Challenge is a traditional competition among Recommender Systems' (RS) researchers. The 2014 edition is focused on predicting the amount of interaction achieved by tweets related to movies. In this paper, we present an approach to participate in the 2014 RecSys Challenge. Our approach consists of three steps: (i) using binary classification methods in order to split the tweets into two lists, those having user engagement equal to zero, and those having user engagement different from zero; (ii) each list is sorted through the use of regression methods; and (iii) is performed a concatenation of the two lists and a sort of tweets. To validate our approach we tested 126 configurations and verify that the settings using MovieTweetings dataset, Naïve Bayes classifier and Linear Regression, obtained the best results: nDCG@10 = 0.9037242.

A Polite Policy for Revisiting Web Pages

2007 Latin American Web Conference (LA-WEB 2007), 2007

We propose and analyze an efficient scheduling policy for revisiting web pages so as to keep a lo... more

Trypanosoma cruzi and experimental Chagas' disease: characterization of a stock isolated from a patient with associated digestive and cardiac form

Revista da Sociedade Brasileira de Medicina Tropical

A new Trypanosoma cruzi stock isolated from a patient in the chronic phase of Chagas' disease... more A new Trypanosoma cruzi stock isolated from a patient in the chronic phase of Chagas' disease with the digestive and cardiac form of the disease was characterized by experimental infection in isogenic, susceptible, A/Sn strain mice. Parasitemia curves showed up to 1.7 x 10(6) parasites/ml and no mortality was observed up to 300 days post infection. Specific IgM was found in mice in the acute phase up to 40 days and also in the chronic phase. IgG antibodies were detected in the acute and chronic phase. Histopathology examination demonstrated myotropism to the digestive tract muscle layers and to the heart.

Perfil De Adesão Aos Planos De Benefício Em Medicamentos

Value in Health, 2013

objeCtives: To systematically identify and compare how generic medications, as defined by FDA, WH... more objeCtives: To systematically identify and compare how generic medications, as defined by FDA, WHO, EMA, are classified and defined by regulatory agencies around the world. Methods: We focused on emerging markets and excluded developed countries. For country selection, we identified the 3 most populace countries in

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Projeção De Gastos Com Medicamentos De Uso Crônico (Ambulatorial)

Value in Health, 2013

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Evolução Do Uso De Medicamentos Genéricos No Tratamento De Doenças Crônicas – Pbm Brasileira

Value in Health, 2013

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Acute effect of intracerebroventricular administration of lead on the drinking behavior of rats induced by dehydration or central cholinergic and angiotensinergic stimulation

Physiology & Behavior, 1994

In the present paper, the acute effect of third ventricle injections of lead acetate (5, 10, 100,... more In the present paper, the acute effect of third ventricle injections of lead acetate (5, 10, 100, 1000 ng/rat) on the drinking behavior of adult, male, Wistar rats was investigated. Lead generates a prompt and significant reduction in water intake induced by three different circumstances: dehydration (14 h of water deprivation) and after carbachol (2 micrograms/rat, ICV) or angiotensin II (10 ng/rat, ICV) administration. These results show that lead may produce very fast actions in the central nervous system and suggest that inhibition of water intake by lead may depend on impairment of central cholinergic and/or angiotensinergic functions.

Carboplatin delays mammary cancer 4T1 growth in mice

Pathology - Research and Practice, 2013

Carboplatin is commonly used to treat a variety of tumors. We investigated the effects of carbopl... more Carboplatin is commonly used to treat a variety of tumors. We investigated the effects of carboplatin (100mg/kg) in the development and metastatic dissemination of the 4T1 mice mammary carcinoma. Carboplatin was able to reduce tumor volume and the number of lung metastases in 50% compared to the control animals. Mitotic and apoptotic indices were also decreased by the treatment. Assessment of the vascularization of the tumors revealed a significant decrease in blood vessel formation by carboplatin. A decrease in nuclear positivity of CDC47 and cyclin D1 was observed in the group treated with carboplatin when compared to the control group. Positivity for p53 was observed in the control group (2/28; 5%) and the treated group (5/71; 4%). Carboplatin has been demonstrated to be an efficient regulator of 4T1MMT growth and dissemination. The action of this chemotherapeutic agent seems to be related to the induction of apoptosis and inhibition of angiogenesis and cell proliferation.

New branch-and-bound algorithms for k-cardinality tree problems

Electronic Notes in Discrete Mathematics, 2011

Given an undirected graph, the k-cardinality tree problem (KCTP) is the problem of finding a subt... more Given an undirected graph, the k-cardinality tree problem (KCTP) is the problem of finding a subtree with exactly k edges whose sum of weights is minimum. In this paper we present a lower bound for KCTP based on the work by Kataoka et al. [Kataoka, S., N. Araki and T. Yamada, Upper and lower bounding procedures for the minimum rooted

Consensus for the diagnosis, prognosis and treatment of canine mammary tumors

The purpose of this paper is to establish criteria that could guide the diagnosis, prognosis and ... more The purpose of this paper is to establish criteria that could guide the diagnosis, prognosis and treatment of canine mammary neoplasias. It was elaborated during the Mammary Pathology Meeting: Diagnosis, Prognosis and Treatment of the Canine Mammary Neoplasia, held on November 6th and 7th, 2010 in Belo Horizonte -MG, Brazil. Academics from several regions of Brazil were present and contributed to this work. After three years, a new discussion was found necessary in order to address important questions: 1 -Have Brazilian DVMs applied the consensus? 2 -What were the main difficulties in applying the consensus? 3 -What were the obtained results? 4 -What were the main differences among the various oncology services/groups? 5 -How could the criteria be improved and uniformed? A spreadsheet that allowed data collection and an abstract was submitted by each oncology service/group from various parts of the country. Based on the abstracts we identified the main differences in diagnosis and therapeutic conducts among the groups. These differences have guided the discussions of the II Mammary Pathology Meeting and the publication of a second consensus that has been revised and updated. The II Mammary Pathology Meeting: Diagnosis, Prognosis and Treatment of the Canine mamary Neoplasia, was held on December 9 th , 10 th and 11 th , 2013 in Belo Horizonte -MG, sponsored by the Laboratory of Comparative Pathology of the Federal University of Minas Gerais (UFMG), with the support of the Brazilian Association of Veterinary Pathology (ABPV) and Brazilian Association of Veterinary Oncology (ABROVET). Academics from several regions of Brazil were present and contributed to this work.

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Herpetofauna, Ponte de Pedra Hydroelectric Power Plant, states of Mato Grosso and Mato Grosso do Sul, Brazil

by Carlos Cintra, Helder Da Silva, and Carlos Eduardo

Check List, 2009

This paper presents a check list of amphibians and reptiles of the area under influence of Ponte ... more This paper presents a check list of amphibians and reptiles of the area under influence of Ponte de Pedra hydroelectric power plant on Correntes River (municipality of Sonora), between the Brazilian states of Mato Grosso do Sul and Mato Grosso. The list was the result of collecting efforts of a Faunal Program (inventory, rescue, and monitoring) carried out between November 2003 and April 2005. The list comprises 2 orders (Gymnophiona and Anura), 7 families (Caeciliidae, Bufonidae, Cycloramphidae, Hylidae, Leiuperidae, and Leptodactylidae) 14 genera, and 33 species of amphibians and 3 orders (

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Reducing human interactions in Web directory searches

ACM Transactions on Information Systems, 2007

Consider a website containing a collection of webpages with data such as in Yahoo or the Open Dir... more Consider a website containing a collection of webpages with data such as in Yahoo or the Open Directory project. Each page is associated with a weight representing the frequency with which that page is accessed by users. In the tree hierarchy representation, accessing each page requires the user to travel along the path leading to it from the root. By enhancing the index tree with additional edges (hotlinks) one may reduce the access cost of the system. In other words, the hotlinks reduce the expected number of steps needed to reach a leaf page from the tree root, assuming that the user knows which hotlinks to take. The hotlink enhancement problem involves finding a set of hotlinks minimizing this cost. This article proposes the first exact algorithm for the hotlink enhancement problem. This algorithm runs in polynomial time for trees with logarithmic depth. Experiments conducted with real data show that significant improvement in the expected number of accesses per search can be ac...

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