Guerrero A.R.,UC |
CEUR Workshop Proceedings | Year: 2015
The objective of this study was to identify the specialization profiles which are most required by companies and organizations in Lima, through the analysis of job postings published in the Internet. Text Mining techniques were used to extract relevant information and to identify some generic skills for the Peruvian statisticians. For purposes of this study, we analyzed 2,809 job postings published in the Blog "Estadísticos de Perú" , between 2009 and 2014. We have identified many requirements, knowledge and specific skills that companies and organizations were looking for. After that, job postings were segmented using Singular Value Decomposition (SVD) of the Terms and Documents Matrix. In addition, five segments were discovered, corresponding to specific competency profiles of statisticians, where each one has different types of knowledge and specific skills.
Demark-Wahnefried W.,University of Alabama at Birmingham |
Colditz G.A.,Washington University in St. Louis |
Rock C.L.,University of California at San Diego |
Sedjo R.L.,Aurora University |
And 8 more authors.
Breast Cancer Research and Treatment | Year: 2015
Obesity is a poor prognostic factor and is negatively related to quality of life (QOL) in breast cancer survivors. Exercise and Nutrition to Enhance Recovery and Good Health for You is the largest weight loss trial completed among cancer survivors. Percent losses in body weight with an intensive group-based intervention versus an attention control were 6.0 versus 1.5 % (p < 0.0001) and 3.7 versus 1.3 % (p < 0.0001) at 12 and 24 months, respectively. ENERGY also was designed to answer the research question: Does weight loss significantly improve vitality and physical function (key components of QOL)? 692 breast cancer survivors (BMI: 25–45 kg/m2) at 4 US sites were randomized to a year-long intensive intervention of 52 group sessions and telephone counseling contacts versus a non-intensive (control) of two in-person counseling sessions. Weight, self-reported QOL, and symptoms were measured semi-annually for two years. Significant decreases in physical function and increases in symptoms were observed among controls from baseline to 6 months, but not in the intervention arm, −3.45 (95 % Confidence Interval [CI] −6.10, −0.79, p = 0.0109) and 0.10 (95 %CI 0.04, 0.16, p = 0.0021), respectively. Improvements in vitality were seen in both arms but trended toward greater improvement in the intervention arm −2.72 (95 % CI −5.45, 0.01, p = 0.0508). These differences diminished over time; however, depressive symptoms increased in the intervention versus control arms and became significant at 24 months, −1.64 (95 % CI −3.13, −0.15, p = 0.0308). Increased QOL has been reported in shorter term diet and exercise trials among cancer survivors. These longer term data suggest that diet and exercise interventions improve some aspects of QOL, but these benefits may diminish over time. © 2015, Springer Science+Business Media New York.
PubMed | Washington University in St. Louis, UAB, University of California at Los Angeles, UC and 5 more.
Type: Clinical Trial, Phase III | Journal: Breast cancer research and treatment | Year: 2015
Obesity is a poor prognostic factor and is negatively related to quality of life (QOL) in breast cancer survivors. Exercise and Nutrition to Enhance Recovery and Good Health for You is the largest weight loss trial completed among cancer survivors. Percent losses in body weight with an intensive group-based intervention versus an attention control were 6.0 versus 1.5% (p<0.0001) and 3.7 versus 1.3% (p<0.0001) at 12 and 24 months, respectively. ENERGY also was designed to answer the research question: Does weight loss significantly improve vitality and physical function (key components of QOL)? 692 breast cancer survivors (BMI: 25-45kg/m(2)) at 4 US sites were randomized to a year-long intensive intervention of 52 group sessions and telephone counseling contacts versus a non-intensive (control) of two in-person counseling sessions. Weight, self-reported QOL, and symptoms were measured semi-annually for two years. Significant decreases in physical function and increases in symptoms were observed among controls from baseline to 6 months, but not in the intervention arm, -3.45 (95% Confidence Interval [CI] -6.10, -0.79, p=0.0109) and 0.10 (95%CI 0.04, 0.16, p=0.0021), respectively. Improvements in vitality were seen in both arms but trended toward greater improvement in the intervention arm -2.72 (95% CI -5.45, 0.01, p=0.0508). These differences diminished over time; however, depressive symptoms increased in the intervention versus control arms and became significant at 24 months, -1.64 (95% CI -3.13, -0.15, p=0.0308). Increased QOL has been reported in shorter term diet and exercise trials among cancer survivors. These longer term data suggest that diet and exercise interventions improve some aspects of QOL, but these benefits may diminish over time.
Valverde-Albacete F.J.,Spanish University for Distance Education (UNED) |
Pelaez-Moreno C.,UC |
del Campo C.,Complutense University of Madrid
Studies in Fuzziness and Soft Computing | Year: 2015
This paper deals with the relation between fuzzy implications and Galois connections, trying to raise the awareness that the fuzzy implications are indispensable to generalise Formal Concept Analysis. The concrete goal of the paper is to make evident that Galois connections, which are at the heart of some of the generalizations of Formal Concept Analysis, can be interpreted as fuzzy incidents. Thus knowledge processing, discovery, exploration and visualization as well as data mining are new research areas for fuzzy implications as they are areas where Formal Concept Analysis has a niche. © Springer International Publishing Switzerland 2015.
Moreno R.,UC |
Vega J.,CIEMAT |
Dormido S.,Spanish University for Distance Education (UNED)
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2016
This article shows a conformal prediction application to disruption prediction from scratch. Considering data from ILW experimental campaigns (both hydrogen and deuterium campaigns), a one-layer disruption predictor has been tested from scratch. The results show a relevant improvement where the success rate (rate of disruptions predicted correctly) increases and the false alarm rate (rate of non-disruptive discharges misclassified) decreases, using conformal prediction (CP) rather than conventional methodology from scratch. CP from scratch achieves a success rate of 100% with the first model and only one disruptive discharge. © Springer International Publishing Switzerland 2016.
Marques J.,UA |
Azevedo M.R.,UA |
Neto J.A.N.,Federal University of Ceará |
Pereira A.J.S.C.,UC |
Comunicacoes Geologicas | Year: 2014
The main objective of this investigation was to assess the viability of the commercial exploitation of the Serra Branca monzogranite as dimension stone. The Serra Branca massif belongs to a large late tectonic plutonic complex of Brasilian age (≈ 600 Ma), known in the literature as Quixeramobim batholith, that crops out in the Ceará Central Domain (NE Brazil). The work involved detailed geological mapping of a small sector of the batholith, petrography of the main lithologies and, at a subsequent stage, selection of a subset of samples from the Serra Branca monzogranite for technological and radiological characterization. The technological properties of the analysed samples satisfy the requirements proposed by ABNT NBR 15844 (2010) and ASTM C- 615 (2005) for use as building materials. On the other hand, the gamma index values (I) and radon exhalation rates are also low, certifying the quality of Serra Branca monzogranite as potential natural stone resources. © 2014, LNEG – Laboratório Nacional de Geologia e Energia IP.
Yadav D.,JIIT |
Sharma A.K.,YMCA University |
Sanchez-Cuadrado S.,UC |
Journal of Theoretical and Applied Information Technology | Year: 2012
World Wide Web (WWW) is a huge repository of interlinked hypertext documents known as web pages. Users access these hypertext documents via Internet. Since its inception in 1990, WWW has become many folds in size, and now it contains more than 50 billion publicly accessible web documents distributed all over the world on thousands of web servers and still growing at exponential rate. It is very difficult to search information from such a huge collection of WWW as the web pages or documents are not organized as books on shelves in a library, nor are web pages completely catalogued at one central location. Search engine is basic information retrieval tool, used to access information from WWW. In response to the search query provided by users, Search engines use their database to search the relevant documents and produce the result after ranking on the basis of relevance. In fact, the Search engine builds its database, with the help of WebCrawlers. To maximize the download rate and to retrieve the whole or significant portion of the Web, search engines run multiple crawlers in parallel. Overlapping of downloaded web documents, quality, network bandwidth and refreshing of web documents are the major challenging problems faced by existing parallel WebCrawlers that are addressed in this work. A Multi Threaded (MT) server based novel architecture for incremental parallel web crawler has been designed that helps to reduce overlapping, quality and network bandwidth problems. Additionally, web page change detection methods have been developed to refresh the web document by detecting the structural, presentation and content level changes in web documents. These change detection methods help to detect whether version of a web page, existing at Search engine side has got changed from the one existing at Web server end or not. If it has got changed, the WebCrawler should replace the existing version at Search engine database side to keep its repository up-to-date. © 2005 - 2012 JATIT & LLS.
Taborda C.G.,UC |
Perez-Cruz F.,UC |
Guo D.,Northwestern University
IEEE International Symposium on Information Theory - Proceedings | Year: 2014
In recent years, a number of mathematical relationships have been established between information measures and estimation measures for various models, including Gaussian, Poisson and binomial models. In this paper, it is shown that the second derivative of the input-output mutual information with respect to the input scaling can be expressed as the expectation of a certain Bregman divergence pertaining to the conditional expectations of the input and the input power. This result is similar to that found for the Gaussian model where the Bregman divergence therein is the square distance. In addition, the Poisson, binomial and negative binomial models are shown to be similar in the small scaling regime in the sense that the derivative of the mutual information and the derivative of the relative entropy converge to the same value. © 2014 IEEE.
Asgari H.,UC |
Chen X.,UC |
Proceedings - 2011 2nd International Conference on Control, Instrumentation and Automation, ICCIA 2011 | Year: 2012
Modelling and control of gas turbines (GTs) have always been a controversial issue because of the complex dynamics of these kinds of equipment. Considerable research activities have been carried out so far in this field in order to disclose the secrets behind the nonlinear behaviour of these systems. Although the results of the research in this area have been satisfactory so far, it seems that there is no end to the efforts for performance optimization of gas turbines. A variety of analytical and experimental models as well as control systems has been built so far for gas turbines. However, the need for optimized models for different objectives and applications has been a strong motivation for researchers to continue to work in this field. This paper is aimed at presenting a general overview of essential basic criteria that need to be considered for making a satisfactory model and control system of a gas turbine. GT type, GT configuration, modelling methods, modelling objectives as well as control system type and configuration are the main preliminary factors for modelling a gas turbine which will be briefly discussed in the paper. Some of the research in this field will be also stated shortly. © 2011 IEEE.
PubMed | UC Health, University of Cincinnati, Center for Health Informatics, UC and University of Birmingham
Type: | Journal: American heart journal | Year: 2016
Appropriate thromboprophylaxis for patients with atrial fibrillation (AF) remains a national challenge.We hypothesized that provision of decision support in the form of an Atrial Fibrillation Decision Support Tool (AFDST) would improve thromboprophylaxis for AF patients. We conducted a cluster randomized trial involving 15 primary care practices and 1,493 adults with nonvalvular AF in an integrated health care system between April 2014 and February 2015. Physicians in the intervention group received patient-level treatment recommendations made by the AFDST. Our primary outcome was the proportion of patients with antithrombotic therapy that was discordant from AFDST recommendation.Treatment was discordant in 42% of 801 patients in the intervention group. Physicians reviewed reports for 240 patients. Among these patients, thromboprophylaxis was discordant in 63%, decreasing to 59% 1 year later (P = .02). In nonstratified analyses, changes in discordant care were not significantly different between the intervention group and control groups. In multivariate regression models, assignment to the intervention group resulted in a nonsignificant trend toward decreased discordance (P = .29), and being a patient of a resident physician (P = .02) and a higher HAS-BLED score predicted decreased discordance (P = .03), whereas female gender (P = .01) and a higher CHADSVASc score (P = .10) predicted increased discordance.Among patients whose physicians reviewed recommendations of the decision support tool discordant therapy decreased significantly over 1 year. However, in nonstratified analyses, the intervention did not result in significant improvements in discordant antithrombotic therapy.