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Density-Driven Mass Transfer in repositories for Nuclear Waste

NUCLEAR TECHNOLOGY 2019年第6期205卷 819-829页

作者： Neretnieks, Ivars Winberg-Wang, Helen Royal Inst Technol KTH Dept Chem Engn Stockholm Sweden

In geologic repositories for nuclear waste located in crystalline rocks, the waste is surrounded by a bentonite buffer that in practice is not permeable to water flow. The nuclides must escape by molecular diffusion to enter the seeping water in the fractures of the rock. At high water-seepage rates, the nuclides can be carried away rapidly. The seepage rate of the water can be driven by the regional hydraulic gradient as well as by buoyancy-driven flow. The latter is induced by thermal circulation of the water by the heat produced by radionuclide decay. The circulation may also be induced by salt exchange between buffer and water in the fractures. The main aim of this paper is to explore how salt exchange between the backfill and mobile water in fractures, by buoyancy effects, can increase the escape rate of radionuclides from a repository. A simple analytical model has been developed to describe the mass transfer rate induced by buoyancy. Numerical simulations support the simple solution. A comparison is made with the regional gradient-driven flow model. It is shown that buoyancy-driven flow can noticeably increase the release rate.

关键词： Radionuclide release rate repositories buoyancy-driven flow channeling equivalent flow rate

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How to(Easily)Extend the FAIRness of Existing repositories

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Data Intelligence 2020年第1期2卷 192-198,314页

作者： Mark Hahnel Dan Valen Figshare Crinan StreetLondonN19XWUnited Kingdom Figshare CambridgeMA 02139USA

Data repository infrastructures for academics have appeared in waves since the dawn of Web *** waves are driven by changes in societal needs,archiving needs and the development of cloud computing *** such,the data repository landscape has many flavors when it comes to sustainability models,target audiences and feature *** thing that links all data repositories is a desire to make the content they host reusable,building on the core principles of cataloging content for economical and research speed *** FAIR principles are a common goal for all repository infrastructures to aim *** matter what discipline or infrastructure,the goal of reusable content,for both humans and machines,is a common *** is the first time that repositories can work toward a common goal that ultimately lends itself to *** idea that research can move further and faster as we un-silo these fantastic resources is an achievable *** paper investigates the steps that existing repositories need to take in order to remain useful and relevant in a FAIR research world.

关键词： FAIR data Metadata Interoperability repositories Data curation

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Global status of dataset repositories at a glance: study based on OpenDOAR

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DIGITAL LIBRARY PERSPECTIVES 2024年第2期40卷 330-347页

作者： Sofi, Ishrat Ayub Bhat, Ajra Gulzar, Rahat Univ Kashmir Dept Lib & Informat Sci Srinagar India

PurposeThe study aims to shed light on the current state of "Dataset repositories" indexed in Directory of Open Access repositories (OpenDOAR).Design/methodology/approachFrom each repository/record information, the Open-Access Policies, Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH), year of creation and the number of data sets archived in the repositories were manually searched, documented and *** countries like the United Kingdom and the USA are primarily involved in the development of institutional open-access repositories comprising significant components of OpenDOAR. The most extensively used software is DSpace. Most data set archives are OAI-PMH compliant but do not follow open-access rules. The study also highlights the sites' embrace of Web 2.0 capabilities and discovers really simple syndication feeds and Atom integration. The use of social media has made its presence known. Furthermore, the study concludes that the number of data sets kept in repositories is insufficient, although the expansion of such repositories has been consistent over the *** implicationsThe work has the potential to benefit both researchers in general and policymakers in particular. Scholars interested in research data, data sharing and data reuse can learn about the present state of repositories that preserve data sets in OpenDOAR. At the same time, policymakers can develop recommendations and policies to assist in the construction and maintenance of repositories for data ***/valueAccording to the literature, there have been numerous studies on open-access repositories and OpenDOAR internationally, but no research has focused on repositories preserving content-type data sets. As a result, the study attempts to uncover various characteristics of OpenDOAR Data set repositories.

关键词： repositories Archives Open access repositories Open access policies OpenDOAR Datasets Dataset repositories Scholarly communication Web 2.0

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Proteomics data repositories: Providing a safe haven for your data and acting as a springboard for further research

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JOURNAL OF PROTEOMICS 2010年第11期73卷 2136-2146页

作者： Vizcaino, Juan Antonio Foster, Joseph M. Martens, Lennart Univ Ghent VIB Dept Med Prot Res B-9000 Ghent Belgium European Bioinformat Inst EMBL Outstn Cambridge England Univ Ghent Dept Biochem B-9000 Ghent Belgium

Despite the fact that data deposition is not a generalised fact yet in the field of proteomics, several mass spectrometry (MS) based proteomics repositories are publicly available for the scientific community. The main existing resources are: the Global Proteome Machine Database (GPMDB), PeptideAtlas, the PRoteomics IDEntifications database (PRIDE), Tranche, and NCBI Peptidome. In this review the capabilities of each of these will be described, paying special attention to four key properties: data types stored, applicable data submission strategies, supported formats, and available data mining and visualization tools. Additionally, the data contents from model organisms will be enumerated for each resource. There are other valuable smaller and/or more specialized repositories but they will not be covered in this review. Finally, the concept behind the ProteomeXchange consortium, a collaborative effort among the main resources in the field, will be introduced. (C) 2010 Elsevier B.V. All rights reserved.

关键词： Proteomics Databases Bioinformatics Data standards repositories

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The dark side of open access in Google and Google Scholar: the case of Latin-American repositories

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SCIENTOMETRICS 2015年第1期102卷 829-846页

作者： Orduna-Malea, Enrique Delgado Lopez-Cozar, Emilio Univ Politecn Valencia Res Grp EC3 Valencia 46022 Spain Univ Granada Res Grp EC3 E-18071 Granada Spain

Since repositories are a key tool in making scholarly knowledge open access (OA), determining their web presence and visibility on the Web (both are proxies of web impact) is essential, particularly in Google (search engine par excellence) and Google Scholar (a tool increasingly used by researchers to search for academic information). The few studies conducted so far have been limited to very specific geographic areas (USA), which makes it necessary to find out what is happening in other regions that are not part of mainstream academia, and where repositories play a decisive role in the visibility of scholarly production. The main objective of this study is to ascertain the web presence and visibility of Latin American repositories in Google and Google Scholar through the application of page count and web mention indicators respectively. For a sample of 137 repositories, the results indicate that the indexing ratio is low in Google, and virtually nonexistent in Google Scholar;they also indicate a complete lack of correspondence between the repository records and the data produced by these two search tools. These results are mainly attributable to limitations arising from the use of description schemas that are incompatible with Google Scholar (repository design) and the reliability of web mention indicators (search engines). We conclude that neither Google nor Google Scholar accurately represent the actual size of OA content published by Latin American repositories;this may indicate a non-indexed, hidden side to OA, which could be limiting the dissemination and consumption of OA scholarly literature.

关键词： Open access repositories Google Google Scholar Webometrics Web indicators Web visibility Indexing Latin America

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Making proteomics data accessible and reusable: Current state of proteomics databases and repositories

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PROTEOMICS 2015年第5-6期15卷 930-949页

作者： Perez-Riverol, Yasset Alpi, Emanuele Wang, Rui Hermjakob, Henning Vizcaino, Juan Antonio European Bioinformat Inst EMBL EBI European Mol Biol Lab Cambridge CB10 1SD England

Compared to other data-intensive disciplines such as genomics, public deposition and storage of MS-based proteomics, data are still less developed due to, among other reasons, the inherent complexity of the data and the variety of data types and experimental workflows. In order to address this need, several public repositories for MS proteomics experiments have been developed, each with different purposes in mind. The most established resources are the Global Proteome Machine Database (GPMDB), PeptideAtlas, and the PRIDE database. Additionally, there are other useful (in many cases recently developed) resources such as ProteomicsDB, Mass Spectrometry Interactive Virtual Environment (MassIVE), Chorus, MaxQB, PeptideAtlas SRM Experiment Library (PASSEL), Model Organism Protein Expression Database (MOPED), and the Human Proteinpedia. In addition, the ProteomeXchange consortium has been recently developed to enable better integration of public repositories and the coordinated sharing of proteomics information, maximizing its benefit to the scientific community. Here, we will review each of the major proteomics resources independently and some tools that enable the integration, mining and reuse of the data. We will also discuss some of the major challenges and current pitfalls in the integration and sharing of the data.

关键词： Bioinformatics Databases MS repositories

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Leading emerging markets: capturing and diffusing scientific knowledge through research-oriented repositories

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SCIENTOMETRICS 2015年第3期104卷 907-930页

作者： Calderon-Martinez, Aurora Ruiz-Conde, Enar Univ Alicante Fac Econ Dept Mkt Alicante 03690 Spain

In this paper we investigate the BRIC and CIVETS economies from a new perspective, focusing on the analysis of one element linked to the knowledge economy. Concretely, we analyze the research-oriented repositories of those emerging markets as instruments that contribute to capture and diffuse scientific knowledge. For this end, we carry out a competitive analysis that allows us to study the BRIC and CIVETS repositories using their respective participation shares in terms of content supply, web visibility and size. The results reveal the absolute leadership position that the BRIC economy has over the CIVETS economy in terms of disseminating scientific knowledge as well as that this could weaken in a near future. Furthermore, two repositories linked to universities in Brazil and South Africa are the leaders in those emerging economies. Putting aside the leadership position, India and China are over and above the rest of the BRIC countries, meanwhile in the case of the CIVETS countries Indonesia has a relevant position.

关键词： Knowledge Emerging economies repositories BRIC CIVETS

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A systematic review of faculty research repositories at higher education institutions

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DIGITAL LIBRARY PERSPECTIVES 2022年第2期38卷 237-248页

作者： Zibani, Patiswa Rajkoomar, Mogiveny Naicker, Nalindren Durban Univ Technol Durban South Africa Durban Univ Technol Dept Informat Syst Durban South Africa

Purpose This study aims to evaluate faculty research repositories used in higher education institutions, their different levels and functions with regard to research information management. This is revealed through the selected studies reviewed. Design/methodology/approach A systematic literature search of journal article studies on research repositories in higher education institutions was carried out on several databases, namely, Ebscohost, Emerald Insight, Science Direct, Sage, Google Scholar, SA e-Publications and citation databases such as Scopus and Web of Science. The systematic review was conducted in accordance with the preferred reporting items for systematic reviews and meta-analyses guidelines. The time frame for the analysis was 2015 to 2021. Findings The findings are presented on the motives for developing faculty research repositories the services provided and benefits derived from faculty research repositories and what is the utilization of faculty research repositories. Originality/value The results show that the development of research repositories at the faculty level enhances sharing, analysis, evaluation and preservation of scholarly research produced.

关键词： repositories Research data management Research data PRISMA Cloud-based Research platforms

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Educational repositories Study of the Current Situation and Strategies to Improve Their Effective Use at Ecuadorian Universities

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IEEE REVISTA IBEROAMERICANA DE TECNOLOGIAS DEL APRENDIZAJE-IEEE RITA 2016年第2期11卷 79-86页

作者： Maldonado Mahauad, Jorge Javier Pablo Carvallo, Juan Siguencia Zambrano, Josefina Pontificia Univ Catolica Chile Santiago 7820436 Chile Univ Cuenca Ecuador Comp Sci Dept Cuenca 010103 Ecuador Univ Azuay Ecuador Sch Syst Engn & Telemat Cuenca 010169 Ecuador Consorcio Ecuatoriano Desarrollo Internet Avan Ecuadorian Natl Res & Educ Network Cuenca 010103 Ecuador

Educational repositories of digital educational material and learning objects allow teachers and students to store and retrieve educational resources to be used in virtual teaching and learning environments as well as in face-to-face educational spaces. They are also an important means of disseminating and evaluating the quality of educational resources produced by teachers. The quality of these resources largely relies on the guidelines and policies issued by educational institutions and supplied to their teachers, so that these resources can be created with an adequate level of quality and deployed in different learning management systems. The objective of this paper is to explore to what extent Ecuadorian universities make use of the educational repositories of digital educational material, the specialized repositories of learning objects, and the way in which they have evolved over the last five years. This paper also helps to identify the barriers and the factors that hinder their use. It is expected that the conclusions drawn from this analysis will permit the design of strategies aimed to promote the creation and use of quality digital educational materials.

关键词： repositories learning object digital material educational resources learning management systems

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repositories at bibliodiversity Stakes: Community approaches 23

Repositories at bibliodiversity Stakes: Community approaches

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23rd International Conference on Electronic Publishing: Academic Publishing and Digital Bibliodiversity, ELPUB 2018

作者： Boukacem-Zeghmouri, Chérifa Berthaud, Christine Lyon University Lyon 1 France CNRS CCSD France

Green Road is deeply anchored in the scholarly communication system. Based on the analysis of a panel of 6 repositories, the study identify strategies repositories have adopted in order to meet or adjust to Open Science requirements in terms of bibliodiversity. Typically, thematic repositories are not only concerned with articles but also consider new artefacts, linked and interlinked. Research outcomes suggest reconsidering the term "repository" as it no longer seems relevant to our panel. © ELPUB 2019.

关键词： Artefacts Bibliodiversity Brand Interoperability Megajournals Openness repositories Research communities Value

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