11 results on '"Olga Stepankova"'
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2. Perspectives on Open Science and The Future of Scholarly Communication: Internet Trackers and Algorithmic Persuasion
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Tiberius Ignat, Paul Ayris, Beatrice Gini, Olga Stepankova, Deniz Özdemir, Damla Bal, and Yordanka Deyanova
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scholarly communication ,track ,persuade ,readers ,authors ,open science ,Bibliography. Library science. Information resources - Abstract
The current digital content industry is heavily oriented towards building platforms that track users’ behaviour and seek to convince them to stay longer and come back sooner onto the platform. Similarly, authors are incentivised to publish more and to become champions of dissemination. Arguably, these incentive systems are built around public reputation supported by a system of metrics, hard to be assessed. Generally, the digital content industry is permeable to non-human contributors (algorithms that are able to generate content and reactions), anonymity and identity fraud. It is pertinent to present a perspective paper about early signs of track and persuasion in scholarly communication. Building our views, we have run a pilot study to determine the opportunity for conducting research about the use of “track and persuade” technologies in scholarly communication. We collected observations on a sample of 148 relevant websites and we interviewed 15 that are experts related to the field. Through this work, we tried to identify 1) the essential questions that could inspire proper research, 2) good practices to be recommended for future research, and 3) whether citizen science is a suitable approach to further research in this field. The findings could contribute to determining a broader solution for building trust and infrastructure in scholarly communication. The principles of Open Science will be used as a framework to see if they offer insights into this work going forward.
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- 2021
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3. Cholinergic white matter pathways make a stronger contribution to attention and memory in normal aging than cerebrovascular health and nucleus basalis of Meynert
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Milan Nemy, Nira Cedres, Michel J. Grothe, J-Sebastian Muehlboeck, Olof Lindberg, Zuzana Nedelska, Olga Stepankova, Lenka Vyslouzilova, Maria Eriksdotter, José Barroso, Stefan Teipel, Eric Westman, and Daniel Ferreira
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Cholinergic system ,Basal forebrain ,Normal aging ,Small vessel disease ,Cognition ,Magnetic resonance imaging ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
The integrity of the cholinergic system plays a central role in cognitive decline both in normal aging and neurological disorders including Alzheimer’s disease and vascular cognitive impairment. Most of the previous neuroimaging research has focused on the integrity of the cholinergic basal forebrain, or its sub-region the nucleus basalis of Meynert (NBM). Tractography using diffusion tensor imaging data may enable modelling of the NBM white matter projections. We investigated the contribution of NBM volume, NBM white matter projections, small vessel disease (SVD), and age to performance in attention and memory in 262 cognitively normal individuals (39–77 years of age, 53% female). We developed a multimodal MRI pipeline for NBM segmentation and diffusion-based tracking of NBM white matter projections, and computed white matter hypointensities (WM-hypo) as a marker of SVD. We successfully tracked pathways that closely resemble the spatial layout of the cholinergic system as seen in previous post-mortem and DTI tractography studies. We found that high WM-hypo load was associated with older age, male sex, and lower performance in attention and memory. A high WM-hypo load was also associated with lower integrity of the cholinergic system above and beyond the effect of age. In a multivariate model, age and integrity of NBM white matter projections were stronger contributors than WM-hypo load and NBM volume to performance in attention and memory. We conclude that the integrity of NBM white matter projections plays a fundamental role in cognitive aging. This and other modern neuroimaging methods offer new opportunities to re-evaluate the cholinergic hypothesis of cognitive aging.
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- 2020
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4. Artificial Intelligence and Women Researchers in the Czech Republic
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Lenka Lhotska and Olga Stepankova
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artificial intelligence ,machine learning ,women ,research ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
Artificial intelligence as a research area has been continuously growing for several decades. Many applications were developed in various domains. Medicine and health care have attracted more intensive attention thanks to rapid technological development that has accelerated generation of large volumes of data requiring intelligent analysis and evaluation. This article illustrates, through examples of women researchers and selected AI projects in medicine, the wide spectrum of applications developed during the last fifteen years in the Czech Republic, and in particular at the Czech Technical University in Prague. Women researchers played an important and irreplaceable role since the advent of AI research in the Czech Republic. By their example, they motivated many young female students to join the community and start their research career in the AI area. They frequently participated in research projects led by the senior women researchers. The presented overview of projects illustrates the diversity of the medical area and the potential of AI methods that can be used for solving data- and knowledge-intensive problems. We briefly touch on the AI study programs. In conclusion, we point out the future challenges in AI and its applications in medicine and health care.
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- 2022
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5. Tissue specific electrochemical fingerprinting.
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Pavlina Sobrova, Lenka Vyslouzilova, Olga Stepankova, Marketa Ryvolova, Jiri Anyz, Libuse Trnkova, Vojtech Adam, Jaromir Hubalek, and Rene Kizek
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Medicine ,Science - Abstract
BACKGROUND: Proteomics and metalloproteomics are rapidly developing interdisciplinary fields providing enormous amounts of data to be classified, evaluated and interpreted. Approaches offered by bioinformatics and also by biostatistical data analysis and treatment are therefore of extreme interest. Numerous methods are now available as commercial or open source tools for data processing and modelling ready to support the analysis of various datasets. The analysis of scientific data remains a big challenge, because each new task sets its specific requirements and constraints that call for the design of a targeted data pre-processing approach. METHODOLOGY/PRINCIPAL FINDINGS: This study proposes a mathematical approach for evaluating and classifying datasets obtained by electrochemical analysis of metallothionein in rat 9 tissues (brain, heart, kidney, eye, spleen, gonad, blood, liver and femoral muscle). Tissue extracts were heated and then analysed using the differential pulse voltammetry Brdicka reaction. The voltammograms were subsequently processed. Classification models were designed making separate use of two groups of attributes, namely attributes describing local extremes, and derived attributes resulting from the level=5 wavelet transform. CONCLUSIONS/SIGNIFICANCE: On the basis of our results, we were able to construct a decision tree that makes it possible to distinguish among electrochemical analysis data resulting from measurements of all the considered tissues. In other words, we found a way to classify an unknown rat tissue based on electrochemical analysis of the metallothionein in this tissue.
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- 2012
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6. Spatial mapping of metals in tissue-sections using combination of mass-spectrometry and histology through image registration
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Tomáš Vaculovič, Jiri Anyz, Viktor Kanicky, Olga Stepankova, Lenka Vyslouzilova, Hajo Haase, Michaela Tvrdonova, Vojtech Adam, Zbynek Heger, and Vratislav Horak
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0301 basic medicine ,Pathology ,medicine.medical_specialty ,ZINC LEVELS ,Materials science ,STRESS ,Swine ,Laser ablation inductively coupled plasma mass spectrometry ,BEARING LIBECHOV MINIPIG ,Image registration ,COPPER ,Pilot Projects ,Mass spectrometry ,Article ,Mass Spectrometry ,Computer supported ,03 medical and health sciences ,MELANOBLASTOMA ,La icp ms ,Image Processing, Computer-Assisted ,medicine ,ELEMENTS ,Animals ,LA-ICP-MS ,Melanoma ,Multidisciplinary ,Histological Techniques ,MIXED-EFFECTS MODELS ,Spatial mapping ,Histology ,Disease Models, Animal ,Zinc ,030104 developmental biology ,Tissue sections ,MELANOMA PATIENTS ,Copper ,METALLOTHIONEIN-OVEREXPRESSION ,Biomedical engineering - Abstract
We describe a new procedure for the parallel mapping of selected metals in histologically characterized tissue samples. Mapping is achieved via image registration of digital data obtained from two neighbouring cryosections by scanning the first as a histological sample and subjecting the second to laser ablation inductively coupled plasma mass spectrometry. This computer supported procedure enables determination of the distribution and content of metals of interest directly in the chosen histological zones and represents a substantial improvement over the standard approach, which determines these values in tissue homogenates or whole tissue sections. The potential of the described procedure was demonstrated in a pilot study that analysed Zn and Cu levels in successive development stages of pig melanoma tissue using MeLiM (Melanoma-bearing-Libechov-Minipig) model. We anticipate that the procedure could be useful for a complex understanding of the role that the spatial distribution of metals plays within tissues affected by pathological states including cancer.
- Published
- 2017
7. Staff perspectives on the usability of electronic patient records for planning and delivering dementia care in nursing homes: a multiple case study
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Kate Shiells, Angie Alejandra Diaz Baquero, Olga Štěpánková, and Iva Holmerová
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Assessment ,Dementia ,Care plan ,Electronic health records ,Electronic patient records ,Nursing home ,Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Abstract Background The electronic patient record (EPR) has been introduced into nursing homes in order to facilitate documentation practices such as assessment and care planning, which play an integral role in the provision of dementia care. However, little is known about how the EPR facilitates or hinders these practices from the end-user’s perspective. Therefore, the objective of this qualitative study was to explore the usability issues associated with the EPR for assessment and care planning for people with dementia in nursing homes from a staff perspective. Methods An exploratory, qualitative research design with a multiple case study approach was used. Contextual Inquiry was carried out with a variety of staff members (n = 21) who used the EPR in three nursing homes situated in Belgium, Czech Republic and Spain. Thematic analysis was used to code interview data, with codes then sorted into a priori components of the Health Information Technology Evaluation Framework: device, software functionality, organisational support. Two additional themes, structure and content, were also added. Results Staff provided numerous examples of the ways in which EPR systems are facilitating and hindering assessment and care planning under each component, particularly for people with dementia, who may have more complex needs in comparison to other residents. The way in which EPR systems were not customisable was a common theme across all three homes. A comparison of organisational policies and practices revealed the importance of training, system support, and access, which may be linked with the successful adoption of the EPR system in nursing homes. Conclusions EPR systems introduced into the nursing home environment should be customisable and reflect best practice guidelines for dementia care, which may lead to improved outcomes and quality of life for people with dementia living in nursing homes. All levels of nursing home staff should be consulted during the development, implementation and evaluation of EPR systems as part of an iterative, user-centred design process.
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- 2020
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8. Database and Expert Systems Applications : 14th International Conference, DEXA 2003, Prague, Czech Republic, September 1-5, 2003, Proceedings
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Vladimir Marik, Werner Retschitzegger, Olga Stepankova, Vladimir Marik, Werner Retschitzegger, and Olga Stepankova
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- Database management--Congresses, Expert systems (Computer science)--Congresses
- Abstract
The 14th DEXA 2003 International Conference on Database and Expert - stems Applications was held during September 1–5, 2003 at the Czech Technical UniversityinPrague,CzechRepublic.TheDEXAlineofconferenceshasalready gained its own reputation and respected position as a platform for the exchange of ideas among theoreticians and practitioners in the wider area of computer science, but mainly in the areas of database and knowledge-based technologies. Since DEXA 1993, which was held in Prague, DEXA has grown into a m- ticonference consisting of four more focused and specialized conferences besides DEXA itself, namely the DaWak conference, EC-Web conference, eGOV c- ference, and this year happening for the?rst time, the HoloMAS conference. In addition, the DEXA workshop is a special event o?ering enough space for specialized discussion, and acting – in a certain sense – as an incubator for new conferences. The DEXA conference itself is growing in volume and quality each year. This time there were 236 papers submitted and reviewed and the program committee selected 91 of the best papers to be included in this volume. Each of the subm- ted papers was carefully reviewed by at least three independent PC members or external reviewers. The DEXA proceedings quite clearly re?ect the current trends in the da- base area and we are happy with the balanced content of both the conference and the proceedings.
- Published
- 2003
9. Multi-Agent Systems and Applications : 9th ECCAI Advanced Course ACAI 2001 and Agent Link's 3rd European Agent Systems Summer School, EASSS 2001, Prague, Czech Republic, July 2-13, 2001. Selected Tutorial Papers
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Michael Luck, Vladimir Marik, Olga Stepankova, Robert Trappl, Michael Luck, Vladimir Marik, Olga Stepankova, and Robert Trappl
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- Artificial intelligence, Computer networks, Software engineering, Information storage and retrieval systems, Computers and civilization
- Abstract
The Advanced Course on Artificial Intelligence ACAI 2001 with the subtitle M ulti- Agent Systems and Their Applications, held in Prague, Czech Republic, was a joint event of ECCAI (the European Coordinating Committee for Artificial Intelligence) and AgentLink, the European Network of Excellence for Agent-Based Computing. Whereas ECCAI organizes two-week ACAI courses on different topics every second year, AgentLink s European Agent Systems Summer School (EASSS) has been an annual event since 1999. This year, both of these important events were merged together, giving weight to the fact that multi-agent systems currently represent one of the hottest topics in AI research. The name, ACAI 2001 Summer School, is intended to emphasize that this event continues the tradition of regular ECCAI activities (ACAI), as well as the EASSS summer schools of AgentLink. The Prague ACAI Summer School was proposed and initiated by both the Gerstner Laboratory, Czech Technical University, Prague (GL-CTU) and the Czech Society for Cybernetics and Informatics (CSKI), with the support of the Austrian Research Institute for Artificial Intelligence in Vienna (OFAI). Part of our motivation was catalyzed by experience gained in 1992 during the International Summer School Advanced Topics in Artificial Intelligence (see Springer s LNAI vol. 617) which was organized by the same Czech and Austrian bodies. One of the most important stimulating factors behind the organization of ACAI 2001 was the support provided by the European Commission to the Gerstner Laboratory within the frame of the MIRACLE Center of Excellence project (IST No.
- Published
- 2003
10. Multi-Agent-Systems and Applications II : 9th ECCAI-ACAI/EASSS 2001, AEMAS 2001, HoloMAS 2001. Selected Revised Papers
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Vladimir Marik, Olga Stepankova, Hana Krautwurmova, Michael Luck, Vladimir Marik, Olga Stepankova, Hana Krautwurmova, and Michael Luck
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- Intelligent agents (Computer software)--Congress, Artificial intelligence--Congresses
- Published
- 2003
11. New Tool for Visualization of Time Series and Anomalies in Streaming Data
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Marek Otáhal and Olga Štěpánková
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visualization ,online monitoring ,time-series ,anomaly detection ,interactive graph scaling ,Agriculture ,Biology (General) ,QH301-705.5 - Abstract
A new software tool for simultaneous visualization of multiple time dependent signals, featuring a novel and highly useful combination of capabilities, and published as an open source solution is presented in this paper. The tool is designed to meet the needs of its users who expect lightweight, interactive & intuitive use and ease of deployment in current setups, including live monitoring systems with anomaly detection, highlighting and streaming data processing abilities. The functionality and motivation for our system is derived from various signal analysis applications, our research activities related to design and evaluation of neural network models, and from systems for continuous monitoring and anomaly detection (e.g. in IT or medical domains), which is demonstrated on simple use case examples.
- Published
- 2016
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