1,720,978 research outputs found
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Predicting Sustainability in Open-Source Projects: A Socio-Technical Approach using EPEX
Get PDFOpen-source projects are pivotal to the innovation and sustainability of software, yet their complex dynamics can be challenging to decipher. Building upon the foundational work of the DECAL group, which demonstrated the utility of socio-technical networks in analyzing the lifecycle of projects, and the APEX tool developed for Apache projects to forecast sustainability, this thesis extends the idea and introduces the Eclipse Project Explorer (EPEX) tool. Employing dual-network models—social and technical—this research explores open-source collaborations within the Eclipse ecosystem. The social network leverages data from mailing lists and other communication platforms to visualize interactions among developers, while the technical network utilizes GitHub commit data to trace file changes, illuminating the evolution of software projects. These networks are visualized over time, offering developers deeper insights into project lifecycles and interaction patterns. Furthermore, we introduce a groundbreaking ‘graduation forecast‘ model that predicts the long-term sustainability of projects based on analytical data. By applying our methodology to selected case studies within Eclipse, our findings not only validate the effectiveness of our approach but also enhance our understanding of project sustainability, providing a robust tool for strategic decision-making in software development. This thesis lays foundational work for future research into the lifecycle management of open-source software, significantly extending prior research
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Enabling Synthetic Data Usage for Medical Research
Get PDFAcquiring data can be a major hurdle to any data science problem. Sometimes there isn’t enough data or, as is particularly the case for healthcare data, it may contain sensitive information such as personal identifiers that should not be shared. By generating synthetic health data, researchers aim to overcome obstacles of data access and privacy concerns and thereby allow for quicker and broader use of data by the research community. Through this thesis I have surveyed the current state of synthetic data usage in medical research, recorded the thoughts, experiences, and opinions of synthetic data use in medical research from interviewing medical researchers, selected synthetic data generation tools, assessed the accessibility, usability, and efficacy of the selected data generation tool with the help of two different use case groups, experimented with creative ways to use the chosen synthetic data tool, and used my experiences to write resources for current and future researchers who need assistance getting started with synthetic data generation through the UC Davis DataLab
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Studying OSS Sustainability via Socio-technical Structure and Institutional Governance
Get PDFOpen Source Software (OSS) projects have become an integral part of our digital landscape, revolutionizing the way we develop, distribute, and consume software in various sectors. From operating systems to complex data analysis tools, OSS projects are the backbone of the global digital infrastructure. They offer a collaborative platform for developers worldwide, fostering the development and maintenance of high-quality software by leveraging the collective knowledge and expertise of a diverse, global community. However, despite their undeniable potential and benefits, OSS projects often face challenges related to sustainability, requiring effective governance, and a committed community of volunteering contributors. Understanding and addressing these challenges is crucial for maintaining the sustainability of OSS projects, ultimately benefiting the broader digital ecosystem.This thesis aims to investigate the dynamics of OSS projects to understand the underlying factors contributing to their sustainability or lack thereof. This investigation primarily provides insights into the following research questions: How effective can we predict sustainability based on socio-technical traces of OSS projects? Can we identify the determinants for OSS sustainability along with their weights and directions? And, are there temporal associations between socio-technical structure and institutional governance? Answers to the above questions can help us design tools and methodologies to forecast the sustainability trajectory of OSS projects. This would allow stakeholders, such as project managers, contributors, and sponsors, to make informed decisions about resource allocation, project involvement, and risk management
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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