96 results on '"data-analysis"'
Search Results
2. Changes in mental health of Indian students due to online classes during COVID-19 pandemic.
- Author
-
Kar, Bikram and Sarkar, Bikash Kanti
- Subjects
VIRTUAL classrooms ,COVID-19 pandemic ,ONLINE education ,MENTAL health screening ,PSYCHOLOGICAL stress ,MENTAL health of students - Abstract
This study examines the influence of online classes on the mental stress of Indian students amid the COVID-19 pandemic. Data from 428 respondents, spanning from class 10 to research scholars, was collected via a Google Form questionnaire. Parameters like excitement for online classes, class time gaps, teacher-centric lecture, competitive mindset, disruption of normal life, and health related issues were analysed using descriptive statistics. The findings offer insights into the potential causes of mental stress among students during online classes, with implications for improving mental health through screening strategies. These findings may also apply to offline classes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Navigating data-overload challenges during data-analysis: A qualitative researcher's experience in accounting sciences.
- Author
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Mabesele, Lindiwe A.
- Subjects
LITERATURE reviews ,RESEARCH personnel ,CATEGORIES (Mathematics) ,GROUNDED theory ,ACADEMIC dissertations - Abstract
Purpose: Data-overload is a generic, complicated issue, affecting data-analysis processes for many researchers. The challenge emanates from the researcher collecting volumes of data that hinder their ability to engage in higher-level data-analysis processes. Despite the existence of numerous frameworks towards understanding the world, novice qualitative researchers often become overwhelmed, disregard guidelines, and neglect to clearly explain their data-analysis processes. This paper discusses the author's experience with dataoverload and how the three-phase coding process and collaborative decision-making with other stakeholders helped overcome challenges. The aim is to offer new accounting science researchers a set of examples, to serve as benchmarks when dealing with data-overload in their qualitative research projects. Methodology/Approach: The author employs narrative reflection, to capture the interpretive thematic dataanalysis of in-depth interviews and document-based datasets derived from a completed dissertation. This paper's discussions are based on the key factors of data-overload and data-analysis concepts provided by the literature review. Charmaz's constructivist grounded theory principles and Creswell's spiral framework were used to present an open, axial and focused coding process, organising data around concepts, and forming categories and themes for theory development. Implications and Value: The three-phase coding method in qualitative data-analysis can effectively help navigate data-overload and provide reliable insights concerning the collected data. The developed frameworks can assist accounting science students and supervisors, as supplementary resources in addition to existing guidance, when they experience data-overload in their qualitative research projects. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. A Preliminary Analysis of Twitter’s LGBTQ+ Discussions
- Author
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Khan, Abu Naweem, Rafiq, Rahat Ibn, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Prates, Raquel Oliveira, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Lossio-Ventura, Juan Antonio, editor, Valverde-Rebaza, Jorge, editor, Díaz, Eduardo, editor, and Alatrista-Salas, Hugo, editor
- Published
- 2023
- Full Text
- View/download PDF
5. Human behaviour data analysis and noncommunicable diseases: a systematic mapping study.
- Author
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Dias, Lucas Pfeiffer Salomão, Vianna, Henrique Damasceno, and Barbosa, Jorge Luis Victória
- Subjects
- *
DIABETES risk factors , *MENTAL depression risk factors , *NON-communicable diseases , *PRIVACY , *BIBLIOMETRICS , *MOBILE apps , *MEDICAL technology , *WEARABLE technology , *MACHINE learning , *DIET , *RISK assessment , *PHYSICAL activity , *HEALTH behavior , *TERMS & phrases , *MEDICAL ethics , *RESEARCH funding , *DATA analysis , *EMOTIONS , *BEHAVIOR modification , *MEDICAL research , *DISEASE risk factors - Abstract
Noncommunicable diseases (NCDs) or chronic diseases are responsible for 41 million deaths each year, equivalent to 71% of all worldwide deaths. Many technologies are used to aid the treatment of NCDs, and data analysis has been used as an approach to improve the understanding of human behaviour related to risk factors. This study aims to distinguish how human behaviour data analysis has been applied to support the treatment and prevention of NCDs, what technologies are currently used, and what gaps are still left unexplored. We conducted a systematic mapping study to analyse academic articles published from 2010 to September 2021. A filtering process mitigated article bias by reviewing, analysing, and classifying 41 works from 12,395 collected. The main results obtained presented that 43% applied data analysis in depression, 17% applied for general NCDs, and 12% for diabetes. Whereas, machine learning represents 60% of technologies found in the articles, mobile devices 58%, and wearables 29%. This study proposes two taxonomies obtained from the analysis of the selected articles that allow systematised guides to access the knowledge produced in the study. In addition, the taxonomies link technologies used to identify human behaviour with associated NCDs. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
6. Data‐analysis method for hydrogen embrittlement tuning‐fork test.
- Author
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Pohjonen, Aarne, Latypova, Renata, and Seppälä, Oskari
- Subjects
- *
HYDROGEN embrittlement of metals , *TIME series analysis - Abstract
A new data‐analysis method is proposed for processing time‐force data obtained from a recently developed novel tuning‐fork test that has been utilized in hydrogen embrittlement studies. The analysis method is based on the application of suitable functions that are shown to provide a good fit to the data. The fitted functions allow for the calculation of first‐ and second‐order time derivatives from the initially scattered data. The negative peaks of the second‐order derivatives of the fitted functions can be associated with the more sudden changes that could be observed in the experimental data. Since these sudden changes are expected to be related to the operation of the mechanisms at the microstructural level, the present analysis provides a potentially useful method for obtaining knowledge of the operation of these mechanisms. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
7. Defining Sports Performance by Using Automated Machine Learning System †.
- Author
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Saastamoinen, Kalle, Alanen, Tuomas E., Leskinen, Pasi, Pihlainen, Kai, and Jehkonen, Joona
- Subjects
SPORTS administration ,MACHINE learning ,MICROSOFT Azure (Computing platform) ,DECISION making ,DATA analysis - Abstract
We wanted to determine whether we could use an automated machine learning system called Azure for the selection process and placement of conscript training in such a way that AI can make decisions for the right conscript training program individually. To test this, we had four separate datasets and access to the Microsoft Azure automated machine learning environment. According to the test sets we performed, we see that, by using an automated machine learning environment, it was possible to reach the precision level of the decisions we wanted. The main obstacle was not the used automated machine learning environment itself, but the quality of the data used for learning. We also made improvement suggestions regarding how data could be collected and what kind of data we should measure to make predictive data analysis better and be more usable in the future. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
8. Maximizing the utility of public data.
- Author
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Ahmed, Mahmoud, Hyun Joon Kim, and Deok Ryong Kim
- Subjects
PUBLIC utilities ,SCIENTIFIC community ,HUMAN genome ,COST control ,COMMON good - Abstract
The human genome project galvanized the scientific community around an ambitious goal. Upon completion, the project delivered several discoveries, and a new era of research commenced. More importantly, novel technologies and analysis methods materialized during the project period. The cost reduction allowed many more labs to generate high-throughput datasets. The project also served as a model for other extensive collaborations that generated large datasets. These datasets were made public and continue to accumulate in repositories. As a result, the scientific community should consider how these data can be utilized effectively for the purposes of research and the public good. A dataset can be reanalyzed, curated, or integrated with other forms of data to enhance its utility. We highlight three important areas to achieve this goal in this brief perspective. We also emphasize the critical requirements for these strategies to be successful. We draw on our own experience and others in using publicly available datasets to support, develop, and extend our research interest. Finally, we underline the beneficiaries and discuss some risks involved in data reuse. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
9. Maximizing the utility of public data
- Author
-
Mahmoud Ahmed, Hyun Joon Kim, and Deok Ryong Kim
- Subjects
public-data ,data-reuse ,data-analysis ,data-sharing ,reproducible-research ,Genetics ,QH426-470 - Abstract
The human genome project galvanized the scientific community around an ambitious goal. Upon completion, the project delivered several discoveries, and a new era of research commenced. More importantly, novel technologies and analysis methods materialized during the project period. The cost reduction allowed many more labs to generate high-throughput datasets. The project also served as a model for other extensive collaborations that generated large datasets. These datasets were made public and continue to accumulate in repositories. As a result, the scientific community should consider how these data can be utilized effectively for the purposes of research and the public good. A dataset can be re-analyzed, curated, or integrated with other forms of data to enhance its utility. We highlight three important areas to achieve this goal in this brief perspective. We also emphasize the critical requirements for these strategies to be successful. We draw on our own experience and others in using publicly available datasets to support, develop, and extend our research interest. Finally, we underline the beneficiaries and discuss some risks involved in data reuse.
- Published
- 2023
- Full Text
- View/download PDF
10. Data for the link between HEXACO personality traits and job search outcomes in Vietnam
- Author
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Son-Tung Le and Cong-Xuong Dang
- Subjects
Data-analysis ,HEXACO personality traits ,Networking behavior ,Network size ,Tie strength ,Number of job interviews ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Science (General) ,Q1-390 - Abstract
The purpose of this research data is to mention a correlation matrix of data-analytic estimates between the HEXACO personality traits and number of job interviews and job offers through job search networking behavior. The data-analytic correlations are based on 773 graduated students in universities in the North of Vietnam. This data used self-report surveys to collect the data. The data was analyzed using the AMOS software version 22. The obtained data indicated that the level of networking behavior positively affects both number of job interviews and job offers of individuals. Moreover, the acquired data revealed that the personality traits of honesty-humility, extraversion, agreeableness, conscientiousness, and openness to experience are positively related to the level of networking behavior, while emotionality is negatively associated with networking intensity.
- Published
- 2022
- Full Text
- View/download PDF
11. Defining Sports Performance by Using Automated Machine Learning System
- Author
-
Kalle Saastamoinen, Tuomas E. Alanen, Pasi Leskinen, Kai Pihlainen, and Joona Jehkonen
- Subjects
health ,forecasting ,automated ,data-analysis ,Engineering machinery, tools, and implements ,TA213-215 - Abstract
We wanted to determine whether we could use an automated machine learning system called Azure for the selection process and placement of conscript training in such a way that AI can make decisions for the right conscript training program individually. To test this, we had four separate datasets and access to the Microsoft Azure automated machine learning environment. According to the test sets we performed, we see that, by using an automated machine learning environment, it was possible to reach the precision level of the decisions we wanted. The main obstacle was not the used automated machine learning environment itself, but the quality of the data used for learning. We also made improvement suggestions regarding how data could be collected and what kind of data we should measure to make predictive data analysis better and be more usable in the future.
- Published
- 2023
- Full Text
- View/download PDF
12. The unique Cambro-Ordovician silicic large igneous province of NW Gondwana: Catastrophic melting of a thinned crust.
- Author
-
Rodríguez, Carmen, Castro, Antonio, Gómez-Frutos, Daniel, Gutiérrez-Alonso, Gabriel, Francisco Pereira, M., and Fernández, Carlos
- Abstract
[Display omitted] • Data-analysis of the Ollo de Sapo Formation reveals an input of wet mafic magma. • A combined magmatic and metasedimentary source explains the Ollo de Sapo composition. • Felsic Igneous Province of NW Gondwana is derived from a fast melting event. Cambro–Ordovician silicic magmatism in the Central Iberian Zone of the Iberian Massif (Ollo de Sapo Formation, OSF) constitutes a voluminous and geochemically atypical magmatic event that formed preceding the breakup of the northern margin of Gondwana. To date, and due to uncommon geochemical signatures, such as a high Fe, Mg content compared to anatectic melts and the departing from the calc-alkaline trends, the origin of such magmatic event is not fully understood. Herein, we report a data-analysis of geochemistry linking magmas and source compositions. The analysis of the combined data from multiple studies ascribes the geochemistry of the OSF rocks to a combination of extensive melting of Ediacaran metasiliciclastic rocks and a Ca-rich component. It is hypothesized that fluids released by crystallization of mafic magmas contributed to partial melting of a thick metasedimentary pile represented by Ediacaran siliciclastic rocks. Such melting event gave rise to a mobile nebulite or migma , which was able to extrude and form the super-eruption or "flare-up" that characterizes Cambro-Ordovician silicic magmatism at the Gondwana margin. Fast, catastrophic crustal melting with large-scale restite entrainment, triggered by the influx of mafic magma-derived fluids, are considered the main cause of the unique features of this Cambro-Ordovician atypical silicic large igneous province of Gondwana. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
13. A role of computer vision in fruits and vegetables among various horticulture products of agriculture fields: A survey
- Author
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Mukesh Kumar Tripathi and Dr. Dhananjay D. Maktedar
- Subjects
Computer vision ,Agriculture ,Survey ,Pre-processing ,Descriptor ,Data-analysis ,Agriculture (General) ,S1-972 ,Information technology ,T58.5-58.64 - Abstract
Computer vision is a consistent and advanced technique for image processing, with the propitious outcome, and enormous potential. A computer vision has been strongly adopted in the heterogeneous domain including agriculture. During the study of existing research on the role of computer vision in fruits and vegetables among various horticulture products of agriculture fields it is noticed that, the existing survey paper has not focused properly on mathematical framework, feature descriptor, defect detection on multiple datasets of fruits and vegetables elaborately. This has motivated us to undertake an extensive survey. In this paper, we examine the paper broadly related to fruits and vegetables among various horticulture products of agriculture fields, specific model, data pre-processing, data analysis method and overall value of performance accuracy by using a particular performance metric. Moreover, we study the different type of disease present in various fruit and vegetable. We have also focused on the comparison of different machine learning approach with respect to different performance metrics on the same dataset. Thus, we have found that among all existing machine learning techniques SVM give better classification accuracy. A generalized framework to grade the quality and defect detection of multiple fruits and vegetables is also proposed in this survey. This paper covers the survey of ninety-eight papers closely related to computer vision in the agricultural field. By the survey, we have found that computer vision plays an important role and has a large potential to address the challenges related to the agricultural fields.
- Published
- 2020
- Full Text
- View/download PDF
14. SPOCK, an R based package for high-throughput analysis of growth rate, survival, and chronological lifespan in yeast
- Author
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Eric M. Small, Daniel P. Felker, Olivia C. Heath, Ryla J. Cantergiani, Christine E. Robbins, Mary Ann Osley, and Mark A. McCormick
- Subjects
Chronological lifespan ,Survival ,Growth rate ,Budding yeast ,Data-analysis ,Software ,Medicine - Abstract
Plate-reader based methods for high-throughput measurement of growth rate, cellular survival, and chronological lifespan are a compelling addition to the already powerful toolbox of budding yeast Saccharomyces cerevisiae genetics. These methods have overcome many of the limits of traditional yeast biology techniques, but also present a new bottleneck at the point of data-analysis. Herein, we describe SPOCK (Survival Percentage and Outgrowth Collection Kit), an R-based package for the analysis of data created by high-throughput plate reader based methods. This package allows for the determination of chronological lifespan, cellular growth rate, and survival in an efficient, robust, and reproducible fashion.
- Published
- 2020
- Full Text
- View/download PDF
15. Cloud-Based Data Analytics on Human Factor Measurement to Improve Safer Transport
- Author
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Ahmed, Mobyen Uddin, Begum, Shahina, Catalina, Carlos Alberto, Limonad, Lior, Hök, Bertil, Di Flumeri, Gianluca, Akan, Ozgur, Series Editor, Bellavista, Paolo, Series Editor, Cao, Jiannong, Series Editor, Coulson, Geoffrey, Series Editor, Dressler, Falko, Series Editor, Ferrari, Domenico, Series Editor, Gerla, Mario, Series Editor, Kobayashi, Hisashi, Series Editor, Palazzo, Sergio, Series Editor, Sahni, Sartaj, Series Editor, Shen, Xuemin (Sherman), Series Editor, Stan, Mircea, Series Editor, Xiaohua, Jia, Series Editor, Zomaya, Albert Y., Series Editor, Ahmed, Mobyen Uddin, editor, Begum, Shahina, editor, and Fasquel, Jean-Baptiste, editor
- Published
- 2018
- Full Text
- View/download PDF
16. Management and prevention of mastitis: A multifactorial approach with a focus on milking, bedding and data-management
- Author
-
Sarne De Vliegher, Ian Ohnstad, and Sofie Piepers
- Subjects
dairy cattle ,data-analysis ,mastitis ,milking machine ,multifactors ,Agriculture (General) ,S1-972 - Abstract
Mastitis is a complex, multifactorial disease. Pathogens, cows and farmers (via management) all play a role. It is costly and annoying for the farmer and threatens the image of the entire dairy industry. Prevention and control of mastitis is based on multiple principles that have been known for a long time. To implement them successfully, they should be put forward by a motivated and motivating advisor that transfers the existing knowledge to the farmer. When the changes are data-driven, applied by an encouraged farmer through a farm-specific implementation, prevention and control of mastitis will be successful and result in happy cows, happy farmers, happy advisors, happy consumers, and a happy industry. Nationwide projects focussing on communication and transfer of existing knowledge in prevention and control are very helpful in reaching high numbers of farmers and advisors and harmonizing the message brought by different parties. This paper gives an overview of multifactorial approach of mastitis management and prevention with a focus on milking, bedding and data-analysis.
- Published
- 2018
- Full Text
- View/download PDF
17. Case study of human pointing gestures and their data analysis.
- Author
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Deuerlein, Christian, Müller, Fabian, and Heß, Peter
- Abstract
The main contribution of this work is a method to generate datasets of pointing gestures. A person points to tracked objects within a motion capture environment and a neuronal network further processes the tracking data. We found that different input data combination has no significant effect on the performance of the networks. Therefore, it is possible to train a network and obtain correct results, regardless of the complete availability of data for head, shoulder, elbow or hand. With the presented method, we could achieve an overall accuracy of 35 mm within a 2D plane over a distance of 2 m. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
18. RPCsim: Model-Based Analysis Within the Calibration-Process
- Author
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Laux, Steve, Freitag, Sven, Geschner, Frank, Gühmann, Clemens, editor, Riese, Jens, editor, and von Rüden, Klaus, editor
- Published
- 2016
- Full Text
- View/download PDF
19. Reservoirs Beneath: Groundwater sustainability in India's Ramganga river basin
- Author
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Angou, Gayathri (author) and Angou, Gayathri (author)
- Abstract
This research studies groundwater sustainability in the Ramganga river basin of northern India. This region experiences a trifecta of hydrological stressors from groundwater over-extraction, frequent flooding during wet seasons, and agricultural droughts during dry seasons. There is a growing body of interventions known as Managed Aquifer Recharge (MAR) which attempts to co-manage these three concerns. One such example is a technology known as Underground Transfer of Floods for Irrigation (UTFI) proposed by the International Water Management Institute (IWMI.) The most common mode of UTFI is recharge ponds and IWMI has technically proven its validity along with extensive piloting work in rural regions of the upper Ramganga basin. When it comes to groundwater planning, what is missing is a holistic approach that encompasses rural and urban (R & U) to study their collective demand for groundwater and plan for implementation of recharge structures; thereby ensuring better groundwater sustainability. Considering this, this thesis analyzes opportunities and barriers for UTFI’s scale-up in growing rural-urban regions of the Ramganga basin by unpacking rural-urban linkages. It proposes a holistic R+U approach for land-use planning to incorporate recharge infrastructures and in so doing, identify rural & urban implementation zones like existing ponds and parks for mixed interventions. This work adopts mixed-methods of qualitative and quantitative to conduct desk research and fieldwork, backed by relevant academic theories. The thesis culminates in land-use planning recommendations for the rural and urban to cohesively take steps towards groundwater sustainability and hydrological disaster resilience within a chosen study region. These recommendations are useful for planners and policy makers in the field, along with specific spatial, community, institutional and planning strategy aimed for IWMI’s use., https://www.youtube.com/watch?v=hjvDvzGPfcU Webinar with CGIAR (International Water Management Institute's parent organization) NEXUS Gains talks., International Water Management Institute, Underground Transfer of Floods for Irrigation (IWMI), Metropolitan Analysis, Design and Engineering (MADE)
- Published
- 2023
20. Revelation of the metabolic pathway of hederacoside C using an innovative data analysis strategy for dynamic multiclass biotransformation experiments.
- Author
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Peeters, Laura, Beirnaert, Charlie, Van der Auwera, Anastasia, Bijttebier, Sebastiaan, De Bruyne, Tess, Laukens, Kris, Pieters, Luc, Hermans, Nina, and Foubert, Kenn
- Subjects
- *
DATA analysis , *SAPONINS , *DIGESTIVE enzymes , *MICROBIAL metabolites , *WEB-based user interfaces , *NATURAL products , *BIOCHEMICAL mechanism of action - Abstract
• A workflow was established for unbiased screening of metabolites. • In vitro biotransformation was performed, using GI enzymes and fecal microflora. • An automated workflow was developed to analyze longitudinal LC–MS data. • The unbiased screening revealed the stepwise elimination of sugar moieties. • The data analysis workflow can replace laborious human data revision processing. Although some herbal remedies have been used for decades, little is known about the active compounds and the mechanism of action. Many natural products, such as glycosides, can be considered as prodrugs, which become active after biotransformation. To optimize the workflow of in vitro biotransformation followed by automated data analysis, hederacoside C was used as a model compound for saponins. Hederacoside C was subjected to gastrointestinal enzymes and fecal microflora. Samples were analyzed with UHPLC-PDA-HRMS before, during and after in vitro biotransformation, which allowed the monitoring of the relative abundances of the compound and its metabolites. The data-analysis workflow was optimized to render as much information as possible from the longitudinal LC MS data. XCMS was used to convert the raw data into features via peak-picking, followed by grouping, and EDGE was used for the extraction of significant differential profiles. To evaluate if the workflow was suitable for dynamic multiclass metabolomics data, an interactive Shiny web app was developed in R to rate the quality of the resulting features. These ratings were used to train a random forest model for predicting experts response. A performance analysis revealed that the random forest model was capable of correctly predicting the reviewers response in most cases (AUC 0.926 with 10 fold cross validation). The automated data analysis workflow was used for unbiased screening for metabolites and revealed the biotransformation of hederacoside C. As expected, a decrease in relative abundance of hederacoside C was observed over time. Additionally, the relative abundance of metabolites increased, illustrating the biotransformation of hederacoside C, especially in the colon phase, where microbial fermentation takes place. Stepwise progressive elimination of sugar moieties was the major metabolic pathway. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
21. Single-cell RNA sequencing analysis of glioblastoma tumors reveals interesting cell phenotypes and inter-dependencies between different cell types
- Author
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Salonen, Iida, Lääketieteen ja terveysteknologian tiedekunta - Faculty of Medicine and Health Technology, and Tampere University
- Subjects
immunology ,Bioteknologian ja biolääketieteen tekniikan maisteriohjelma - Master's Programme in Biotechnology and Biomedical Engineering ,immunosuppression ,T-cells ,glioblastoma ,tumor microenvironment ,single-cell sequencing ,data-analysis ,macrophages - Published
- 2023
22. Tourist Ports and Yachting: The Case of Sardinia
- Author
-
Gian Marco Ugolini and Enrico Ivaldi
- Subjects
Nautical tourism ,tourist ports ,survey ,data-analysis ,Sardinia-Italy ,Geography (General) ,G1-922 ,Social sciences (General) ,H1-99 - Abstract
The aim of this work is to describe the situation of nautical tourism in one of the largest islands in the Mediterranean through the analysis of the marinas and the sailing habits of the boaters. After outlining the typology, characteristics and functions of the marinas in the introduction, we briefly present the quantitative-qualitative analysis methodology that was carried out through interviews to the stakeholders and subsequent processing of the original information obtained. The presentation of the results concerns the context of Italian ports and then focuses on Sardinia in terms of ports and berths. The discussion, on the other hand, is based on the original analysis of the use of Sardinian ports, the navigation mode of the boaters, including the characteristics of the boats used. In the conclusions, it is emphasized that Sardinia is at the centre of a boating area that extends to the Upper Tyrrhenian Sea, within which it represents a hub and the favourite area for the most important and rich segment of yachts. This, however, does not preclude existing structures from pursuing an improvement in the supply from the point of view of environmental compatibility, of the quality of the services offered and, above all, of a stronger connection to the tourist offer of the hinterlands. A possible development of the present study may cover other similar cases in the Mediterranean, regarding in particular the specific aspect of the degree of openness towards the boaters coming from "continental" territories.
- Published
- 2017
- Full Text
- View/download PDF
23. Assessing data analysis performance in research contexts: An experiment on accuracy, efficiency, productivity and researchers’ satisfaction.
- Author
-
Martin-Rodilla, Patricia, Panach, Jose Ignacio, Gonzalez-Perez, Cesar, and Pastor, Oscar
- Subjects
- *
DATA analysis , *BOUNDARY value problems , *CLUSTER analysis (Statistics) , *COGNITIVE ability , *PERFORMANCE evaluation - Abstract
Any knowledge generation process involves raw data comprehension, evaluation and inferential reasoning. These practices, common to different disciplines, are known as data analysis, and represent the most important set of activities in research contexts. Researchers use data analysis software methods and tools for generating new knowledge in their daily data analysis. In recent years, data analysis software has been incorporating explicit references in modelling of cognitive processes, in order to improve the assistance offered in data analysis tasks. However, data analysis software commercial suites are still resisting this inclusion, and there is little empirical work done in knowing more about how cognitive aspects inclusion in software helps researchers in analyzing data. In this paper, we evaluate the impact produced by the explicit inclusion of cognitive processes in the assistance logic of software tools design and development. We conducted an empirical experiment comparing data analysis performance using traditional software versus data analysis performance using software-assistance tools which incorporate cognitive processes in their design. The experiment is designed in terms of accuracy, efficiency, productivity and user satisfaction during the data analysis made by researchers. It allowed us to find some clear benefits of the cognitive inclusion in the software designed for research contexts, with statistically significant differences in terms of accuracy, productivity and researcher's satisfaction in support of this explicit inclusion, although some efficiency weaknesses are detected. We also discuss the implications of these results for the priority of cognitive inclusion in the software tools design for research contexts data analysis. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
24. The unique Cambro-Ordovician silicic large igneous province of NW Gondwana: Catastrophic melting of a thinned crust
- Author
-
Agencia Estatal de Investigación (España), Ministerio de Ciencia e Innovación (España), Foundation for Science and Technology, Rodríguez, Carmen, Castro, Antonio, Gómez-Frutos, Daniel, Gutiérrez-Alonso, Gabriel, Pereira, M. Francisco, Fernández, Carlos, Agencia Estatal de Investigación (España), Ministerio de Ciencia e Innovación (España), Foundation for Science and Technology, Rodríguez, Carmen, Castro, Antonio, Gómez-Frutos, Daniel, Gutiérrez-Alonso, Gabriel, Pereira, M. Francisco, and Fernández, Carlos
- Abstract
Cambro–Ordovician silicic magmatism in the Central Iberian Zone of the Iberian Massif (Ollo de Sapo Formation, OSF) constitutes a voluminous and geochemically atypical magmatic event that formed preceding the breakup of the northern margin of Gondwana. To date, and due to uncommon geochemical signatures, such as a high Fe, Mg content compared to anatectic melts and the departing from the calc-alkaline trends, the origin of such magmatic event is not fully understood. Herein, we report a data-analysis of geochemistry linking magmas and source compositions. The analysis of the combined data from multiple studies ascribes the geochemistry of the OSF rocks to a combination of extensive melting of Ediacaran metasiliciclastic rocks and a Ca-rich component. It is hypothesized that fluids released by crystallization of mafic magmas contributed to partial melting of a thick metasedimentary pile represented by Ediacaran siliciclastic rocks. Such melting event gave rise to a mobile nebulite or migma, which was able to extrude and form the super-eruption or “flare-up” that characterizes Cambro-Ordovician silicic magmatism at the Gondwana margin. Fast, catastrophic crustal melting with large-scale restite entrainment, triggered by the influx of mafic magma-derived fluids, are considered the main cause of the unique features of this Cambro-Ordovician atypical silicic large igneous province of Gondwana.
- Published
- 2022
25. Tourist Ports and Yachting: The Case of Sardinia.
- Author
-
Ugolini, Gian Marco and Ivaldi, Enrico
- Abstract
The aim of this work is to describe the situation of nautical tourism in one of the largest islands in the Mediterranean through the analysis of the marinas and the sailing habits of the boaters. After outlining the typology, characteristics and functions of the marinas in the introduction, we briefly present the quantitative-qualitative analysis methodology that was carried out through interviews to the stakeholders and subsequent processing of the original information obtained. The presentation of the results concerns the context of Italian ports and then focuses on Sardinia in terms of ports and berths. The discussion, on the other hand, is based on the original analysis of the use of Sardinian ports, the navigation mode of the boaters, including the characteristics of the boats used. In the conclusions, it is emphasized that Sardinia is at the centre of a boating area that extends to the Upper Tyrrhenian Sea, within which it represents a hub and the favourite area for the most important and rich segment of yachts. This, however, does not preclude existing structures from pursuing an improvement in the supply from the point of view of environmental compatibility, of the quality of the services offered and, above all, of a stronger connection to the tourist offer of the hinterlands. A possible development of the present study may cover other similar cases in the Mediterranean, regarding in particular the specific aspect of the degree of openness towards the boaters coming from "continental" territories. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
26. The unique Cambro-Ordovician silicic large igneous province of NW Gondwana: Catastrophic melting of a thinned crust
- Author
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Carmen Rodríguez, Antonio Castro, Daniel Gómez-Frutos, Gabriel Gutiérrez-Alonso, M. Francisco Pereira, and Carlos Fernández
- Subjects
Extensive crustal melting ,Ollo de Sapo Formation ,Cambro-Ordovician magmatism ,Petrología ,Geology ,Geochemical modelling ,Data-analysis - Abstract
This work was supported through the Spanish Research Agency (AEI) Grant Nº PGC2018-096534-B-I00 (Proyecto IBERCRUST). M.F. P. acknowledges the Portuguese Foundation for Science and Technology (FCT) project UIDB/04683/2020, Instituto de Ciências da Terra. This manuscript was benefit from valuable suggestions from Marcos García-Arias and two anonymous reviewers., Cambro–Ordovician silicic magmatism in the Central Iberian Zone of the Iberian Massif (Ollo de Sapo Formation, OSF) constitutes a voluminous and geochemically atypical magmatic event that formed preceding the breakup of the northern margin of Gondwana. To date, and due to uncommon geochemical signatures, such as a high Fe, Mg content compared to anatectic melts and the departing from the calc-alkaline trends, the origin of such magmatic event is not fully understood. Herein, we report a data-analysis of geochemistry linking magmas and source compositions. The analysis of the combined data from multiple studies ascribes the geochemistry of the OSF rocks to a combination of extensive melting of Ediacaran metasiliciclastic rocks and a Ca-rich component. It is hypothesized that fluids released by crystallization of mafic magmas contributed to partial melting of a thick metasedimentary pile represented by Ediacaran siliciclastic rocks. Such melting event gave rise to a mobile nebulite or migma, which was able to extrude and form the super-eruption or “flare-up” that characterizes Cambro-Ordovician silicic magmatism at the Gondwana margin. Fast, catastrophic crustal melting with large-scale restite entrainment, triggered by the influx of mafic magma-derived fluids, are considered the main cause of the unique features of this Cambro-Ordovician atypical silicic large igneous province of Gondwana., Instituto de Ciências da Terra, Spanish Research Agency, Fundação para a Ciência e a Tecnologia, Fundació Catalana de Trasplantament UIDB/04683/2020, Agencia Estatal de Investigación PGC2018-096534-B-I00
- Published
- 2022
27. Social fingerprints
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communities ,data analyse ,gemeenschappen ,neighbourhoods ,participation ,woonomgeving ,succesfactoren ,success factors ,participatie ,data-analysis - Published
- 2022
28. Social fingerprints: Social characterisation of neighbourhoods as design frame for sustainable communities
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Bouw, Kathelijne, Wiekens, Carina, Faaij, André, and Communication, Behaviour & Sustainable Society
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communities ,data analyse ,gemeenschappen ,neighbourhoods ,participation ,woonomgeving ,succesfactoren ,success factors ,participatie ,data-analysis - Published
- 2022
29. Clustering Algorithms for MRI
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Di Gesù, Vito, De La Paz, Robert, Hanson, Wiliams A., Bernstein, Ralph, Rienhoff, O., editor, Lindberg, D. A. B., editor, Adlassnig, Klaus-Peter, editor, Grabner, Georg, editor, Bengtsson, Stellan, editor, and Hansen, Rolf, editor
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- 1991
- Full Text
- View/download PDF
30. Une solution informatisée à l'analyse de sensibilité d'Electre 3
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Ben-Mena S.
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mathematics ,decision-making ,computer-software ,data-analysis ,computers ,data-processing ,equipment ,information-processing ,information-science ,management ,Biotechnology ,TP248.13-248.65 ,Environmental sciences ,GE1-350 - Abstract
A computerized solution to the sensitivity analysis of Electre 3. The multicriteria method Electre III allows sorting out actions likely to solve a decision problem, basing one arguments on several criteria. The complexity of the method renders a possible sensitivity analysis tedious. This short communication details an iterative algorithm used in the pre-existing Electre III software which allows carrying out this analysis automatically.
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- 2001
31. Méthodes de surclassement et analyse de robustesse
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Ben-Mena S.
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mathematics ,decision-making ,data-analysis ,data-processing ,information-processing ,information-science ,management ,Biotechnology ,TP248.13-248.65 ,Environmental sciences ,GE1-350 - Abstract
Outranking methods and robustness analysis. The introduction gives the arguments on which the choice of outranking methods is based: application domain, existence of a software, lack of works on the robustness of outranking methods. The reasons for performing a robustness analysis in decision aid are given: parameters nature, the technique used in order to give them a value and classical techniques used in order to study their variations. Three definitions are then suggested to understand the notion of a robust conclusion and the associated nuances. The difficulties of robustness analysis are summarized. Then, some theoretical paths are proposed: determination of the direction of result evolution according to parameter evolution, ""microscope principle"", determination of maximal variation interval for each parameter, ""star shape"" analysis, use of discrete values coming from variation interval, use of parameter families, partition in domains of the space of possible parameter values where conclusions are sufficiently robust. Some advice which could facilitate robustness analysis are given.
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- 2001
32. Carbon stocks and sinks in forestry for the unitéd Kingdom greenhouse gas inventory. COST E21 Workshop. Contribution of forests and forestry to mitigate greenhouse effects. Joensuu (Finland). 28-30 Sep 2000
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Milne R., Hargreaves K., and Murray M.
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unitéd-kingdom ,forests ,greenhouse-effect ,carbon ,carbon-dioxide ,climatic-change ,research-projects ,source-sink-relations ,biomass ,forestry-production ,afforestation ,data-analysis ,british-isles ,data-processing ,elements ,europe ,forest-management ,forestation ,information-processing ,information-science ,nonmetals ,organization-of-research ,oxides ,plant-physiology ,production ,research ,vegetation ,western-europe ,Biotechnology ,TP248.13-248.65 ,Environmental sciences ,GE1-350 - Abstract
Afforestation in the UK has been significant and continuing since 1920 (up to 30,000 ha per year). Planting data is used to drive a dynamic process-based carbon accounting model (C-Flow) to estimate removals of atmospheric CO2 to these forests. It is assumed that the afforestation can be represented by the characteristics of Sitka spruce for conifers and beech for broadleaves. The present area of forest considered for these estimates is 1.6 millions ha. In 1990 the uptake to trees, litter, soil and products was 2.6 terragramme C, rising to 2.8 terragramme C in 1998. Deforestation is believed to be small. Supporting measurements show that the model predicts long term uptake by conifers well but that losses from planted peat shortly after establishment need further consideration. Process modelling of beech growth suggests that it is primarily dependant on atmospheric CO2 concentration and not on stomatal control per se. UK research priorities relevant to preparation of GHG (greenhouse gas) Inventories are presented.
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- 2000
33. National forest inventory of Finland and its role estimating the carbon balance forests. COST E21 Workshop. Contribution of forests and forestry to mitigate greenhouse effects. Joensuu (Finland). 28-30 Sep 2000
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Tomppo E.
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forests ,forest-inventories ,carbon ,carbon-dioxide ,biomass ,forestry-production ,data-collection ,data-analysis ,finland ,data-processing ,elements ,europe ,forest-management ,information-processing ,information-science ,nonmetals ,oxides ,production ,scandinavia ,vegetation ,western-europe ,Biotechnology ,TP248.13-248.65 ,Environmental sciences ,GE1-350 - Abstract
The paper presents the total stem volume increment and total drain, as well as the corresponding carbon contents, of the trees of Finnish forests. The carbon contents are converted to carbon dioxide equivalents. The total increment is above stump stem wood volume increment including bark. The estimates come from the National Forest Inventory of Finland conducted by the Finnish Forest Research Institute. The method is briefly described. The total drain includes fellings, i.e. removals and cutting waste, as well as natural mortality of above stump stem wood volume of trees including bark. The above stump stem volumes are converted to total tree biomass, total dry matter and total carbon content using available coefficients.
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- 2000
34. Forests and the national greenhouse gas inventory of Germany. COST E21 Workshop. Contribution of forests and forestry to mitigate greenhouse effects. Joensuu (Finland). 28-30 Sep 2000
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Baritz R. and Strich S.
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germany ,climatic-change ,greenhouse-effect ,forest-inventories ,carbon ,forests ,carbon-dioxide ,source-sink-relations ,forest-management ,forestry-production ,land-use ,data-analysis ,data-processing ,elements ,europe ,information-processing ,information-science ,nonmetals ,oxides ,plant-physiology ,production ,vegetation ,western-europe ,Biotechnology ,TP248.13-248.65 ,Environmental sciences ,GE1-350 - Abstract
Since 1995, experiences have been gathered with the calculation of National Greenhouse Gas Inventories in Germany. Because only marginal changes of the total forested area occur in Germany, relevant changes of the balance of greenhouse gases in the forest sector are related to forest management. It was found that the increment of wood by far exceeds the harvested timber volume. Therefore, forests in Germany currently represent a significant sink for carbon (8-9 Mt C per year). In the context of the Kyoto Protocol, area afforested, reforested and deforested (Afforestation Reforestation Deforestation under Intergovernemental Panel on Climate Change definitions) is small. In contrast to the high quality of data from national forest inventories, reporting of Afforestation Reforestation Deforestation areas involves high error due to lacks and inconsistencies in national land-use statistics.
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- 2000
35. Transect sampling promotes higher detection rates compared to discrete sampling for environmental DNA applications
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Thiago M. Sanches
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detection rate ,General Engineering ,Sampling (statistics) ,eDNA ,efficiency ,data-analysis ,transect sampling ,Standard deviation ,Statistical power ,Common species ,Statistics ,Environmental science ,Environmental DNA ,Detection rate ,Transect ,Population dynamics of fisheries - Abstract
The use of environmental DNA (eDNA) to monitor species in aquatic environments has rapidly increased over the past decade. eDNA has consistently outperformed other methods of detection, yet eDNA relies on an indirect measure to estimate the real distribution of a species. Therefore, understanding the environmental factors that disperse eDNA is of major importance. Here we modeled the use of transect sampling for eDNA studies and also model the impact of river advection on detection radius and the expected probability of detection. Our model suggests that transect sampling: 1) increases the detection probability for both rare and common species, thus reducing the frequency of false negatives, 2) diminishes the standard deviation of the detection probability, which in most cases means higher reproducibility of eDNA studies, 3) better estimates systemwide trends of fish population distinguishing zones of multiple fishes from zones where few fishes are present, and 4) diminishes the effects of eddies and river velocity on the detection probability and detection radius. We propose the use of transect sampling as an alternative method of eDNA sampling with benefits that surpass the disadvantages of not being able to pinpoint the exact fish location. Our model also suggests that even short transects (less than 100 m) can yield considerable benefits compared to point sampling.
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- 2021
36. Digital History Repository
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digital ,digital-humanities ,data-visualization ,history ,primary-sources ,time ,data-analysis ,humanities - Abstract
This repository contains simple programs in Python designed to help historians prepare data for quantitative analysis and visualization.
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- 2020
37. Calibration of QUBIC: The Q and U bolometric interferometer for cosmology
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D. Melo, Peter T. Timbie, G. Polenta, L. Mele, S. Loucatos, K. Ganga, Alejandro Almela, Luca Lamagna, W. Marty, Gustavo E. Romero, Giuseppe D'Alessandro, D. Burke, Emory F. Bunn, H. Pastoriza, D. Harari, L. Montier, E. Rasztocky, F. Piacentini, C. Duca, L.P. Ferreyro, L. M. Mundo, D. Prêle, Andrew May, C. Perbost, J.-Ph. Bernard, M. Stolpovskiy, P. de Bernardis, Francesco Cavaliere, J. A. Murphy, P. A. R. Ade, M. Platino, Federico Nati, Créidhe O'Sullivan, M. Wright, Cristian Franceschet, M. Gómez Berisso, M. Giard, M. Gaspard, P. Chanial, E. Olivieri, Alessandro Schillaci, D. Fracchia, C. Kristukat, Y. Giraud-Héraud, A. Baù, L. Mousset, J. Kaplan, C. Oriol, A. Mattei, F. Columbro, J. Bonaparte, M. E. García Redondo, B. Bélier, Nicola Vittorio, L. Grandsire, Silvia Masi, J. Bonis, C. Tucker, G. Amico, Federico Pezzotta, M. Piat, J.-P. Thermeau, F. Incardona, D. Buzi, A. Mennella, Marcin Gradziel, A.D. Supanitsky, J. D. Murphy, Gregory S. Tucker, E. Jules, A. Passerini, V. Gilles, J.M. Salum, S. Dheilly, M. Perciballi, M. M. Gamboa Lerena, F. Voisin, S. A. Torchinsky, Alessandro Paiella, Damien Rambaud, Bruno Maffei, J.G. Alberro, A.C. Cobos Cerutti, C. Chapron, L. Bergé, Mark McCulloch, S. Marnieros, S. Azzoni, D. Auguste, Giampaolo Pisano, F. Pajot, F. Wicek, R. Puddu, Elia S. Battistelli, D. Gayer, S. Banfi, L. H. Arnaldi, J. Aumont, Massimo Gervasi, M. De Leo, D. Bennett, A. Zullo, S. Spinelli, M. Tomasi, Lucio Piccirillo, C. Scóccola, M. De Petris, A. Etchegoyen, Thibaut Louis, Marco Bersanelli, Sophie Henrot-Versille, Mario Zannoni, M.-A. Bigot-Sazy, M. González, A. Pelosi, S. Scully, P. Ringegni, G. Stankowiak, J.-Ch. Hamilton, L. Dumoulin, A. Tartari, D. Viganò, R. Charlassier, M. R. Hampel, G. de Gasperis, Bruce Rafael Mellado Garcia, Alessandro Coppolecchia, A. Fasciszewski, Zmuidzinas, Jonas, Murphy, J, Burke, D, Gamboa Lerena, M, Hamilton, J, Mousset, L, De Petris, M, O'Sullivan, C, Torchinsky, S, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Bélier, B, Battistelli, E, Baù, A, Bennett, D, Bergé, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bonaparte, J, Bonis, J, Bunn, E, Buzi, D, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Cobos Cerutti, A, Columbro, F, Coppolecchia, A, D'Alessandro, G, De Gasperis, G, De Leo, M, Dheilly, S, Duca, C, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Franceschet, C, Ganga, K, García, B, García Redondo, M, Gaspard, M, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Heraud, Y, Grandsire, L, Gómez Berisso, M, González, M, Gradziel, M, Hampel, M, Harari, D, Henrot-Versillé, S, Incardona, F, Jules, E, Kaplan, J, Kristukat, C, Lamagna, L, Loucatos, S, Louis, T, Maffei, B, Marty, W, Mattei, A, May, A, Mcculloch, M, Mele, L, Melo, D, Mennella, A, Montier, L, Mundo, L, Nati, F, Olivieri, E, Oriol, C, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perciballi, M, Pezzotta, F, Piacentini, F, Piccirillo, L, Pisano, G, Platino, M, Polenta, G, Prêle, D, Puddu, R, Rambaud, D, Rasztocky, E, Ringegni, P, Romero, G, Salum, J, Scóccola, C, Schillaci, A, Scully, S, Spinelli, S, Stankowiak, G, Stolpovskiy, M, Supanitsky, A, Tartari, A, Thermeau, J, Timbie, P, Tomasi, M, Tucker, G, Tucker, C, Viganò, D, Vittorio, N, Voisin, F, Wicek, F, Wright, M, Zannoni, M, Zullo, A, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Observatoire de Paris - Site de Paris (OP), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), and Gao, Jian-Rong
- Subjects
QUBIC ,Instrumentation ,interferometer ,Cosmic microwave background ,measurement methods ,CDM ,cosmic background radiation: polarization ,02 engineering and technology ,Astrophysics::Cosmology and Extragalactic Astrophysics ,CMB ,7. Clean energy ,01 natural sciences ,Cosmology ,law.invention ,010309 optics ,FIS/05 - ASTRONOMIA E ASTROFISICA ,Optics ,bolometer ,B-mode polarisation ,law ,0103 physical sciences ,Cosmic Microwave Background ,Calibration ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,measure: spectral ,detector: design ,data-analysis ,Physics ,instrumentation ,calibration ,TES ,business.industry ,Instrument Data ,Bolometer ,transition edge sensor ,Astrophysics::Instrumentation and Methods for Astrophysics ,021001 nanoscience & nanotechnology ,sensitivity ,Interferometry ,B-mode ,Transition edge sensor ,0210 nano-technology ,business - Abstract
International audience; QUBIC (a Q and U Bolometric Interferometer for Cosmology) is a next generation cosmology experiment designed to detect the B-mode polarisation of the Cosmic Microwave Background (CMB). A B-mode detection is hard evidence of Inflation in the ΛCDM model. QUBIC aims to accomplish this by combining novel technologies to achieve the sensitivity required to detect the faint B-mode signal. QUBIC uses technologies such as a rotating half-wave plate, cryogenics, interferometric horns with self-calibration switches and transition edge sensor bolometers. A Technical Demonstrator (TD) is currently being calibrated in APC in Paris before observations in Argentina in 2021. As part of the calibration campaign, the spectral response of the TD is measured to test and validate QUBIC's spectro-imaging capability. This poster gives an overview of the methods used to measure the spectral response and a comparison of the instrument data with theoretical predictions and optical simulations.
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- 2020
38. Data for the link between HEXACO personality traits and job search outcomes in Vietnam.
- Author
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Le ST and Dang CX
- Abstract
The purpose of this research data is to mention a correlation matrix of data-analytic estimates between the HEXACO personality traits and number of job interviews and job offers through job search networking behavior. The data-analytic correlations are based on 773 graduated students in universities in the North of Vietnam. This data used self-report surveys to collect the data. The data was analyzed using the AMOS software version 22. The obtained data indicated that the level of networking behavior positively affects both number of job interviews and job offers of individuals. Moreover, the acquired data revealed that the personality traits of honesty-humility, extraversion, agreeableness, conscientiousness, and openness to experience are positively related to the level of networking behavior, while emotionality is negatively associated with networking intensity., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Published by Elsevier Inc.)
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- 2022
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39. Assessing data analysis performance in research contexts: An experiment on accuracy, efficiency, productivity and researchers’ satisfaction
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Patricia Martin-Rodilla, Cesar Gonzalez-Perez, Oscar Pastor, and Jose Ignacio Panach
- Subjects
0301 basic medicine ,Information Systems and Management ,Knowledge management ,business.industry ,Computer science ,020207 software engineering ,02 engineering and technology ,Cognitive processes ,Software-assistance ,03 medical and health sciences ,030104 developmental biology ,0202 electrical engineering, electronic engineering, information engineering ,Christian ministry ,Data-analysis performance ,business ,LENGUAJES Y SISTEMAS INFORMATICOS ,Productivity ,Data-analysis ,Data-analysis measurement - Abstract
[EN] Any knowledge generation process involves raw data comprehension, evaluation and inferential reasoning. These practices, common to different disciplines, are known as data analysis, and represent the most important set of activities in research contexts. Researchers use data analysis software methods and tools for generating new knowledge in their daily data analysis. In recent years, data analysis software has been incorporating explicit references in modelling of cognitive processes, in order to improve the assistance offered in data analysis tasks. However, data analysis software commercial suites are still resisting this inclusion, and there is little empirical work done in knowing more about how cognitive aspects inclusion in software helps researchers in analyzing data. In this paper, we evaluate the impact produced by the explicit inclusion of cognitive processes in the assistance logic of software tools design and development. We conducted an empirical experiment comparing data analysis performance using traditional software versus data analysis performance using software-assistance tools which incorporate cognitive processes in their design. The experiment is designed in terms of accuracy, efficiency, productivity and user satisfaction during the data analysis made by researchers. It allowed us to find some clear benefits of the cognitive inclusion in the software designed for research contexts, with statistically significant differences in terms of accuracy, productivity and researcher's satisfaction in support of this explicit inclusion, although some efficiency weaknesses are detected. We also discuss the implications of these results for the priority of cognitive inclusion in the software tools design for research contexts data analysis., This paper has the support of Generalitat Valenciana through project IDEO (PROMETEOII/2014/039) and Spanish Ministry of Science and Innovation through project DataME (ref: TIN2016-80811-P).
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- 2018
40. Management and prevention of mastitis: A multifactorial approach with a focus on milking, bedding and data-management
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Sofie Piepers, Sarne De Vliegher, and Ian Ohnstad
- Subjects
0301 basic medicine ,SOMATIC-CELL COUNT ,Agriculture (General) ,Data management ,Control (management) ,Dairy industry ,BACTERIAL COUNTS ,Plant Science ,mastitis ,Biochemistry ,S1-972 ,Milking ,SUBSEQUENT CLINICAL MASTITIS ,03 medical and health sciences ,Food Animals ,RECYCLED MANURE SOLIDS ,INTRAMAMMARY INFECTION ,medicine ,INNATE IMMUNE-RESPONSES ,Veterinary Sciences ,Marketing ,LACTATING DAIRY-CATTLE ,LEVEL RISK-FACTORS ,data-analysis ,Focus (computing) ,Ecology ,COAGULASE-NEGATIVE STAPHYLOCOCCI ,business.industry ,Multifactorial disease ,dairy cattle ,0402 animal and dairy science ,04 agricultural and veterinary sciences ,ESCHERICHIA-COLI MASTITIS ,medicine.disease ,040201 dairy & animal science ,Mastitis ,030104 developmental biology ,milking machine ,multifactors ,Animal Science and Zoology ,Business ,Agronomy and Crop Science ,Somatic cell count ,Food Science - Abstract
Mastitis is a complex, multifactorial disease. Pathogens, cows and farmers (via management) all play a role. It is costly and annoying for the farmer and threatens the image of the entire dairy industry. Prevention and control of mastitis is based on multiple principles that have been known for a long time. To implement them successfully, they should be put forward by a motivated and motivating advisor that transfers the existing knowledge to the farmer. When the changes are data-driven, applied by an encouraged farmer through a farm-specific implementation, prevention and control of mastitis will be successful and result in happy cows, happy farmers, happy advisors, happy consumers, and a happy industry. Nationwide projects focussing on communication and transfer of existing knowledge in prevention and control are very helpful in reaching high numbers of farmers and advisors and harmonizing the message brought by different parties. This paper gives an overview of multifactorial approach of mastitis management and prevention with a focus on milking, bedding and data-analysis.
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- 2018
41. Improving AMS uncertainties and detection of instrumental error
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Palonen, V., Tikkanen, P., and Keinonen, J.
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- *
ACCELERATOR mass spectrometry , *ESTIMATION theory , *MEASUREMENT errors , *DATA analysis , *ANALYSIS of variance , *GAUSSIAN distribution , *AUTOREGRESSION (Statistics) - Abstract
Abstract: We emphasize the estimation of uncertainties of AMS results and the detection of instrumental error in the framework of commonly used methods of AMS data-analysis.The conventional methods are fast but raise the following four issues: (1) observed sampling variance has scatter that may lead to some true values being over five standard errors away from the mean. (2) Use of the Gaussian distribution for the end-result is unwarranted in several cases. (3) The standard error of the mean is slightly biased due to sampling and correlations. (4) Detection of instrumental errors could be improved. The Bayesian CAR model that we have introduced carries the calculations out with full probability distributions and uses an overall probabilistic process to describe the instrumental error. The scatter in the uncertainties given by CAR is an order of magnitude smaller than that of the sampling-based uncertainties, resulting in more reliable uncertainties. Compared to previous methods, better detection and estimation of instrumental error is also achieved. [Copyright &y& Elsevier]
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- 2010
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42. A Run-time System for Efficient Execution of Scientific Workflows on Distributed Environments.
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Teodoro, George, Tavares, Tulio, Ferreira, Renato, Kurc, Tahsin, Meira, Wagner, Guedes, Dorgival, Pan, Tony, and Saltz, Joel
- Subjects
- *
WORKFLOW , *RESEARCH , *DATA analysis , *COMPUTER systems , *COMPUTER networks , *ELECTRONIC data processing , *INFORMATION resources management , *INFORMATION storage & retrieval systems , *APPLICATION software - Abstract
Scientific workflow systems have been introduced in response to the demand of researchers from several domains of science who need to process and analyze increasingly larger datasets. The design of these systems is largely based on the observation that data analysis applications can be composed as pipelines or networks of computations on data. In this work, we present a run-time support system that is designed to facilitate this type of computation in distributed computing environments. Our system is optimized for data-intensive workflows, in which efficient management and retrieval of data, coordination of data processing and data movement, and check-pointing of intermediate results are critical and challenging issues. Experimental evaluation of our system shows that linear speedups can be achieved for sophisticated applications, which are implemented as a network of multiple data processing components. [ABSTRACT FROM AUTHOR]
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- 2008
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43. Evaluating the financial performance of agri-food firms: a multicriteria decision-aid approach
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Kalogeras, Nikos, Baourakis, George, Zopounidis, Costantin, and van Dijk, Gert
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CORPORATE reorganizations , *PRIVATE sector , *ECONOMIC sectors , *DECISION making , *MULTIPLE criteria decision making - Abstract
Abstract: Food economists and financial researchers have long been preoccupied by the issue of evaluating the performance of agri-food firms. As the financial restructuring of the agri-business sector during the past two decades or so reflects sweeping changes that have occurred worldwide, questions have arisen regarding the application of the most suitable financial decision-making tools. This paper introduces a new financial decision aid approach, which is based on data analysis techniques in combination with a multicriteria analysis method (PROMETHEE II). Several notions and concepts forming the financial engineering methodological framework are adopted for the design of this approach. For illustrative purposes, the case of Greek agri-businesses is used. The analysis results in an overall ranking of the examined firms’ performance. Finally, given the limitations of the current study, a research agenda is proposed. [Copyright &y& Elsevier]
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- 2005
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44. Data Exploration and Analysis with Jupyter Notebooks
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Fangohr, Hans, Beg, Marijan, Bergemann, Martin, Bondar, Valerii, Brockhauser, Sandor, Campbell, Aidan, Carinan, Cammille, Costa, Raul, Dall'Antonia, Fabio, Danilevski, Cyril, E, Juncheng, Ehsan, Wajid, Esenov, Sergey, Fabbri, Riccardo, Fangohr, Susanne, Fernandez-Del-Castillo, Enol, Flucke, Gero, Fortmann-Grote, Carsten, Fulla Marsa, Daniel, Giovanetti, Gabriele, Goeries, Dennis, Götz, Andrew, Hall, Jamie, Hauf, Steffen, Hickin, David, Holm Rod, Thomas, Jarosiewicz, Tobiasz, Kamil, Ebad, Karnevskiy, Mikhail, Kieffer, Jerome, Kirienko, Yury, Klimovskaia, Anna, Kluyver, Thomas, Kuster, Markus, Le Guyader, Loïc, Madsen, Anders, Maia, Luis, Mamchyk, Denys, Mercadier, Laurent, Michelat, Thomas, Möller, Johannes, Mohacsi, Istvan, Parenti, Andrea, Pellegrini, Eric, Perrin, Jean-Francois, Reiser, Mario, Reppin, Johannes, Rosca, Robert, Rück, Denivy, Rüter, Tonn, Santos, Hugo, Schaffer, Robert, Scherz, Andreas, Schlünzen, Frank, Scholz, Markus, Schuh, Michael, Selknaes, Jesper Rude, Silenzi, Alessandro, Sipos, Gergely, Spirzewski, Michal, Sztuk, Jolanta, Szuba, Janusz, Taylor, Jonathan, Trojanowski, Sebastian, Wrona, Krzysztof, Yaroslavtsev, Alexander, Zhu, Jun, European Synchrotron Radiation Facility (ESRF), Institut Laue-Langevin (ILL), and ILL
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FEL ,experiment ,detector ,software ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,User Interfaces, User Perspective, and User Experience(UX) ,Accelerator Physics ,data-analysis - Abstract
Jupyter notebooks are executable documents that are displayed in a web browser. The notebook elements consist of human-authored contextual elements and computer code, and computer-generated output from executing the computer code. Such outputs can include tables and plots. The notebook elements can be executed interactively, and the whole notebook can be saved, re-loaded and re-executed, or converted to read-only formats such as HTML, LaTeX and PDF. Exploiting these characteristics, Jupyter notebooks can be used to improve the effectiveness of computational and data exploration, documentation, communication, reproducibility and re-usability of scientific research results. They also serve as building blocks of remote data access and analysis as is required for facilities hosting large data sets and initiatives such as the European Open Science Cloud (EOSC). In this contribution we report from our experience of using Jupyter notebooks for data analysis at research facilities, and outline opportunities and future plans., Proceedings of the 17th International Conference on Accelerator and Large Experimental Physics Control Systems, ICALEPCS2019, New York, NY, USA
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- 2019
45. Current Per Bunch Distribution Measurement at ESRF
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Torino, Laura, Roche, Benoit, Vedder, Bruno, and European Synchrotron Radiation Facility (ESRF)
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injection ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,controls ,SRF ,Beam charge and current monitors ,Accelerator Physics ,data-analysis ,ECR - Abstract
During the last run of the ESRF machine, several instrumentation improvements have been carried out in order to be exported on the new EBS storage ring. In particular, the top-up operation mode has been implemented and it demanded for an accurate, fast, and reliable measurement of the current per bunch distribution. In this proceeding, we describe the characteristics and the performance of the setup chosen to perform this measurement, which consists in a stripline, connected with a high dynamic range oscilloscope and a dedicated data analysis. We also comment on the integration of the measurement in the top-up routine to selectively refill less populated bunches., Proceedings of the 8th International Beam Instrumentation Conference, IBIC2019, Malmö, Sweden
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- 2019
46. The need for data-driven bike fitting : data study of subjective expert fitting
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Joke Schuermans, Jelle De Bock, Jarich Braeckevelt, Erik Witvrouw, Jeroen Dierckx, Steven Verstockt, Vilas-Boas, João, Pezarat-Correia, Pedro, and Cabri, Jan
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Technology and Engineering ,biology ,Athletes ,Statistics ,biology.organism_classification ,Setback ,Data-driven ,Transport engineering ,Medicine and Health Sciences ,Bike Fitting ,Subjectivity Study ,Cycling ,Psychology ,Data-analysis - Abstract
The number of cyclists is growing rapidly, for commuting but also as a sport. With this growth, there has been an increasing interest in cycling position. Trainers, athletes and bike vendors acknowledged this and started to perform bike fits. As these experts have different backgrounds and varying levels of expertise, it was hypothesised that this could have an influence on the outcome in terms of the advised position. In this research three cyclists were bike fitted by nine different bike fitting studios. It was hypothesised that, as different bike fitters use varying techniques and have different experience levels, the cyclist would be advised a different optimal position by these different bike fitters. The preconceived hypothesis was confirmed as the range of advised positions in both saddle height and setback was up to 3 cm. Data-driven bike fitting can help bring down these considerable differences amongst fitters and will be discussed in the last chapter.
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- 2019
47. Haptic contents of a movie dynamically engage the spectator's sensorimotor cortex
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Eero Smeds, Elina Pihko, Riitta Hari, Miika Koskinen, Kaisu Lankinen, Pia Tikka, Department of Media, Department of Neuroscience and Biomedical Engineering, Department of Art, Aalto-yliopisto, Aalto University, Medicum, and Department of Physiology
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Male ,Brain activity and meditation ,spatial filtering ,Motion Pictures ,Motion Perception ,PRIMARY SOMATOSENSORY CORTEX ,Brain mapping ,3124 Neurology and psychiatry ,0302 clinical medicine ,touch ,tactile perception ,Magnetoencephalography (MEG) ,BRAIN ,Research Articles ,data-analysis ,embodiment ,canonical correlation analysis ,media_common ,Haptic technology ,Brain Mapping ,Principal Component Analysis ,MEG ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,05 social sciences ,Magnetoencephalography ,Signal Processing, Computer-Assisted ,Middle Aged ,Magnetic Resonance Imaging ,Touch Perception ,Neurology ,SIMULATION ,ta6131 ,SEPARATION ,Female ,Sensorimotor Cortex ,ACTIVATIONS ,Anatomy ,Psychology ,Research Article ,Adult ,somatosensory cortex ,media_common.quotation_subject ,ta3112 ,050105 experimental psychology ,Fingers ,Young Adult ,canonical correlation ,03 medical and health sciences ,Perception ,medicine ,Humans ,magnetoencephalography (MEG) ,0501 psychology and cognitive sciences ,Radiology, Nuclear Medicine and imaging ,SI ,Motion perception ,human brain ,movie ,Neurocinematics ,3112 Neurosciences ,Tactile perception ,VISION ,neurocinematics ,cinema ,Neurology (clinical) ,Neuroscience ,030217 neurology & neurosurgery - Abstract
Observation of another person's actions and feelings activates brain areas that support similar functions in the observer, thereby facilitating inferences about the other's mental and bodily states. In real life, events eliciting this kind of vicarious brain activations are intermingled with other complex, ever-changing stimuli in the environment. One practical approach to study the neural underpinnings of real-life vicarious perception is to image brain activity during movie viewing. Here the goal was to find out how observed haptic events in a silent movie would affect the spectator's sensorimotor cortex. The functional state of the sensorimotor cortex was monitored by analyzing, in 16 healthy subjects, magnetoencephalographic (MEG) responses to tactile finger stimuli that were presented once per second throughout the session. Using canonical correlation analysis and spatial filtering, consistent single-trial responses across subjects were uncovered, and their waveform changes throughout the movie were quantified. The long-latency (85-175 ms) parts of the responses were modulated in concordance with the participants' average moment-by-moment ratings of own engagement in the haptic content of the movie (correlation r=0.49; ratings collected after the MEG session). The results, obtained by using novel signal-analysis approaches, demonstrate that the functional state of the human sensorimotor cortex fluctuates in a fine-grained manner even during passive observation of temporally varying haptic events. Hum Brain Mapp 37:4061-4068, 2016. (c) 2016 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc.
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- 2016
48. Assessing data analysis performance in research contexts: An experiment on accuracy, efficiency, productivity and researchers' satisfaction
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Universitat Politècnica de València. Centro de Investigación en Métodos de Producción de Software - Centre d'Investigació en Mètodes de Producció de Software, Universitat Politècnica de València. Instituto Interuniversitario de Investigación en Bioingeniería y Tecnología Orientada al Ser Humano - Institut Interuniversitari d'Investigació en Bioenginyeria i Tecnologia Orientada a l'Ésser Humà, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Generalitat Valenciana, Ministerio de Economía y Competitividad, Martín-Rodilla, Patricia, Panach Navarrete, Jose Ignacio, González-Pérez, César Augusto, Pastor López, Oscar, Universitat Politècnica de València. Centro de Investigación en Métodos de Producción de Software - Centre d'Investigació en Mètodes de Producció de Software, Universitat Politècnica de València. Instituto Interuniversitario de Investigación en Bioingeniería y Tecnología Orientada al Ser Humano - Institut Interuniversitari d'Investigació en Bioenginyeria i Tecnologia Orientada a l'Ésser Humà, Universitat Politècnica de València. Departamento de Sistemas Informáticos y Computación - Departament de Sistemes Informàtics i Computació, Generalitat Valenciana, Ministerio de Economía y Competitividad, Martín-Rodilla, Patricia, Panach Navarrete, Jose Ignacio, González-Pérez, César Augusto, and Pastor López, Oscar
- Abstract
[EN] Any knowledge generation process involves raw data comprehension, evaluation and inferential reasoning. These practices, common to different disciplines, are known as data analysis, and represent the most important set of activities in research contexts. Researchers use data analysis software methods and tools for generating new knowledge in their daily data analysis. In recent years, data analysis software has been incorporating explicit references in modelling of cognitive processes, in order to improve the assistance offered in data analysis tasks. However, data analysis software commercial suites are still resisting this inclusion, and there is little empirical work done in knowing more about how cognitive aspects inclusion in software helps researchers in analyzing data. In this paper, we evaluate the impact produced by the explicit inclusion of cognitive processes in the assistance logic of software tools design and development. We conducted an empirical experiment comparing data analysis performance using traditional software versus data analysis performance using software-assistance tools which incorporate cognitive processes in their design. The experiment is designed in terms of accuracy, efficiency, productivity and user satisfaction during the data analysis made by researchers. It allowed us to find some clear benefits of the cognitive inclusion in the software designed for research contexts, with statistically significant differences in terms of accuracy, productivity and researcher's satisfaction in support of this explicit inclusion, although some efficiency weaknesses are detected. We also discuss the implications of these results for the priority of cognitive inclusion in the software tools design for research contexts data analysis.
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- 2018
49. Cloud-Based Data Analytics on Human Factor Measurement to Improve Safer Transport
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Bertil Hök, Gianluca Di Flumeri, Shahina Begum, Mobyen Uddin Ahmed, Lior Limonad, and Carlos A. Catalina
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Computer science ,SimuSafe, safer transport, data-analysis, big data, human factor ,Big data ,050109 social psychology ,Cloud computing ,02 engineering and technology ,Variation (game tree) ,SAFER ,Factor (programming language) ,Human factor ,0202 electrical engineering, electronic engineering, information engineering ,0501 psychology and cognitive sciences ,Data-analysis ,computer.programming_language ,business.industry ,05 social sciences ,Cognition ,Data science ,SimuSafe ,Categorization ,Safer transport ,Data analysis ,020201 artificial intelligence & image processing ,business ,computer - Abstract
Improving safer transport includes individual and collective behavioural aspects and their interaction. A system that can monitor and evaluate the human cognitive and physical capacities based on human factor measurement is often beneficial to improve safety in driving condition. However, analysis and evaluation of human factor measurement i.e. demographics, behaviour and physiology in real-time is challenging. This paper presents a methodology for cloud-based data analysis, categorization and metrics correlation in real-time through a H2020 project called SimuSafe. Initial implementation of this methodology shows a step-by-step approach which can handle huge amount of data with variation and verity in the cloud.
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- 2018
50. Confiabilidad, precisión o reproducibilidad de las mediciones. Métodos de valoración, utilidad y aplicaciones en la práctica clínica
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Manterola, Carlos, Grande, Luis, Otzen, Tamara, García, Nayely, Salazar, Paulina, and Quiroz, Guissela
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Confiabilidad ,reliability ,research ,reproducibilidad ,statistics ,Reproducibility of results [Mesh] ,kappa coefficient ,coeficiente kappa ,análisis de datos ,data-analysis - Abstract
Resumen En investigación, la confiabilidad (precisión, consistencia y reproducibilidad), corresponde a una propiedad psicométrica que dice relación con la ausencia de error de la medición; o del grado de consistencia y estabilidad de las puntuaciones obtenidas a lo largo de sucesivos procesos de medición con un mismo instrumento. Por ello, es esperable que, a mayor variabilidad de resultados, menor sea la precisión del instrumento de medición utilizado, concepto que aplica desde el laboratorio a la práctica clínica. La reproducibilidad se determina aplicando el coeficiente de confiabilidad, que es la correlación entre las puntuaciones obtenidas por los sujetos, en dos formas paralelas de una prueba (porque se supone que miden lo mismo). Por ello, asumiendo que midan lo mismo, las puntuaciones de los sujetos en estudio deberían ser iguales en ambas aplicaciones. De este modo, cuando la correlación es 1, la confiabilidad, precisión o reproducibilidad es máxima; y mientras más cercana a 0 es peor. La precisión en las mediciones está influenciada por el que mide (observador), por aquello con lo que se mide (instrumento de medición), y por lo que es medido (lo observado). Por ende, se ha de tomar en cuenta la variabilidad de cada uno de estos componentes al momento de planificar la medición de la variable en estudio; de tal modo de reducir al máximo los sesgos de medición. Así, las formas más comunes de determinar confiabilidad son: modelos de formas paralelas, test-retest y de dos mitades. Este manuscrito se centra en los conceptos de medición y las diversas técnicas estadísticas utilizadas para ello, como paso previo a la aplicación en la clínica. Por ello, el objetivo de este manuscrito es generar un documento de estudio y consulta relacionado con la confiabilidad, reproducibilidad o precisión del proceso de medición. Reliability (accuracy, consistency and reproducibility) is a psychometric property, which is related to the absence of measurement error, or, to the degree of consistency and stability of the scores obtained through successive measurement processes with the same instrument. Thus a greater variability of results will lower the accuracy or reliability of instrument used, fact that is transverse from the laboratory to the clinical practice. It is determined by applying the reliability coefficient, which is the correlation between the scores obtained by the subjects in two parallel forms of a test. Assuming that the two forms of the test are parallel (measure the same), the scores of the subjects under study should be the same in both applications. In this way, when the correlation is 1, the reliability or precision is maximum. On the other hand, reliability could be influenced by the observer (the one that measures), the measuring instrument (by that with which it is measured), and by the observed (by what is measured). Therefore, the variability of each of these components must be taken into account when planning the measurement of the variable under study, in such a way to reduce measurement biases as much as possible. The most common ways to determine reliability are the models of parallel forms, test-retest and two halves. This manuscript focuses on the concepts of measurement and the various statistical techniques used for this, as a step prior to application in the clinic. Therefore, the aim of this manuscript is to generate a consultation document related to the reliability or reproducibility of the measurement process.
- Published
- 2018
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