2,898 research outputs found
A comparison of nonparametric estimators of survival under left-truncation and right-censoring motivated by a case study
No full textWe present an application of nonparametric estimation of survival in the presence of left-truncated and right-censored data. We confirm the well-known unstable behavior of the survival estimates when the risk set is small and there are too few early deaths. How ever, in our real scenario where only few death times are necessarily available, the proper nonparametric maximum likelihood estimator, and its usual modification, behave less badly than alternative methods proposed in the literature. The relative merits of the different estimators are discussed in a simulation study extending the settings of the case study to more general scenarios
Discrimination of hidden information in measurement results
No full textIn a growing economy, standardization promotes the exchange of products, people and processes but it is during industrial crises that standardization fosters the economic recovery. The Geometrical Product Specification (GPS) Project aims to develop a new, universal, univoque and mathematical based language to express the geometrical variability of manufactured products. The knowledge of GPS standards not only provides a competitive edge to manufacturing enterprises, which design, produce and control products with higher quality, but also increases the competitiveness of a whole industrial district or country promoting the cooperation between enterprises. GPS explores components of uncertainties, from the specification to the verification phase. Even if the GPS project provides a description of variability along the product life cycle, it is significant to discriminate hidden information on measurement results, in order to gain the most quantity of information into the manufacture variability. Methods to discriminate information are analyzed for macro geometry with a partitioning probabilistic method and for profiles with independent component analysis technique
Blind separation of manufacturing variability with independent component analysis: a convolutive approach
No full textMartina Drijverová and her literary works for children (author´s portrait)
No full textThis thesis Martina Drijverova and her literatur for children (the author´s portrait) is engaged in work of writer and screenwriter Martina Drijeverová. She is an excellent writer of literature for children. In the first part of this work her story writing is mentioned and the second part deals with her fairy-tale writing. The other author´s work written for children is in the third part. The conclusion of this thesis appreciates the author´s credit in literature for chidlren. Analysis of some books are available. The supplementary part is composed of autor´s biography and her photograph, some book covers, list of the autor´s work {--} televiews, radio plays and serials, audio tapes and CDs, stage plays, books written in Braille
HERStory Makers 2022: Martina Čagalj
No full textMartina Čagalj is a PhD candidate at the University of Split studying seaweeds as a potential source of bioactive compounds. She took part in HERStory Makers 2022.What is HERStory Makers?HERStory Makers is a social media competition for female-identifying early career researchers to share their research, their career journeys, and to inspire the next generation. Winners are selected by public vote. HERStory Makers is also part of EXPLORATHON, Scotland's contribution to European Researchers' Night.In 2022-23, EXPLORATHON was supported by the Engineering & Physical Sciences Research Council [grant number EP/X020894/1].Author contributions to contentMartina Čagalj conceived, planned, and recorded the video content. Kirsty Ross edited the video content to insert HERStory Maker credits, add subtitles, and maintain video length below Twitter/X limit of 2 mins and 20 secs, prior to scheduling the social media posts.</p
Analysis of influence of Verification strategy on Roundness error Evaluation
No full textCoordinate Measuring Machines (CMMs) are widely used in industry to inspect any kind of workpiece form and assess conformity to tolerance specifications. However, for each tolerance, there exist specific instruments, that provide more accurate results, but are not always available in industrial practice. This paper deals with an experimental study of the influence of different factors (such as sample size, sampling strategy, and form evaluation method) on CMM and roundness tester, measuring processes capability in the control of roundness toleranc
The role of data science in software development
No full textauthor: Martina WeberMasterarbeit Universität Innsbruck 201
The role of data science in software development
No full textauthor: Martina WeberMasterarbeit Universität Innsbruck 201
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