32 research outputs found
RO-Manager:A Tool for Creating and Manipulating Research Objects to Support Reproducibility and Reuse in Sciences
No full textIn this position paper we present a lightweight command-line tool RO Manager, which provides a straightforward way for scientists to assemble an aggregation of their experiment materials and methods which can then be published and shared with colleagues or linked to scientific publications, to enhance the reproducibility and trustworthiness of experiment results. The tool is currently being tested by a small group of scientists from two different domains, who would like to preserve sufficient materials and information along with their scientific results in order to improve their reproducibility in the future
RO-Manager:A Tool for Creating and Manipulating Research Objects to Support Reproducibility and Reuse in Sciences
No full textIn this position paper we present a lightweight command-line tool RO Manager, which provides a straightforward way for scientists to assemble an aggregation of their experiment materials and methods which can then be published and shared with colleagues or linked to scientific publications, to enhance the reproducibility and trustworthiness of experiment results. The tool is currently being tested by a small group of scientists from two different domains, who would like to preserve sufficient materials and information along with their scientific results in order to improve their reproducibility in the future
RO-Manager:A Tool for Creating and Manipulating Research Objects to Support Reproducibility and Reuse in Sciences
No full textIn this position paper we present a lightweight command-line tool RO Manager, which provides a straightforward way for scientists to assemble an aggregation of their experiment materials and methods which can then be published and shared with colleagues or linked to scientific publications, to enhance the reproducibility and trustworthiness of experiment results. The tool is currently being tested by a small group of scientists from two different domains, who would like to preserve sufficient materials and information along with their scientific results in order to improve their reproducibility in the future
Scientific Lenses over Linked Data:An approach to support task specific views of the data. A vision.
No full textWithin complex scientific domains such as pharmacology, operational equivalence between two concepts is often context-, user- and task-specific. Existing Linked Data integration procedures and equiva- lence services do not take the context and task of the user into account. We present a vision for enabling users to control the notion of opera- tional equivalence by applying scientific lenses over Linked Data. The scientific lenses vary the links that are activated between the datasets which affects the data returned to the user
Linked Humanities Data: The Next Frontier? A Case-study in Historical Census Data
No full textThis paper discusses the use of Linked Data to harmonize the Dutch censuses (1795-1971). Due to the long period they cover, census data is notoriously difficult to compare, aggregate and query in a uniform fashion. In social history, harmonization is the (manual) process of restructuring, interpreting and correcting original data sources to make a comparison possible. We describe a harmonization methodology based on standard Linked Data principles, illustrate how the size and complexity of the resulting linked data source poses new challenges for Semantic Web technology, and discuss potential solutions
A pilot “big data” education module curriculum for engineering graduate education: Development and implementation
No full textProjects in engineering higher education increasingly produce data in the volume, variety, velocity, and need for veracity such that the output of the research is considered “Big Data”. While engineering faculty members do conceive of and direct the research producing this data, there may be gaps in faculty members’ knowledge in training graduate and undergraduate research assistants in the practical management of Big Data. The project described in this research paper details the development of a Big Data education module for graduate researchers in Electrical and Computer Engineering. The project has the following objectives: to document and describe current data management practices within a specific research group; to identify gaps in knowledge that need to be addressed in order for research assistants to successfully manage Big Data; and to create curricular interventions to address these gaps. This paper details the motivation, relevant literature, research methodology, curricular intervention, and pilot presentation of the Big Data module. Results indicate that the fundamental concepts governing the management of Big Data have been cursorily covered in previous coursework and that students are in need of a comprehensive introduction to the topic, contextualized to the work that they are performing in the research or classroom environment
RDF mappings between SWEET and ENVO ontologies [version 1.0]
No full textRDF mappings between the ENVO ontology and the SWEET2.3 ontologies created by Agreement Maker Light for the ESIP TestBed project, Evaluating the ESIP Ontologies for Ontology Matching, Summer 201
Electrochemical Intercalation Of O2- In La2cuo4 Single Crystals
No full textThe electrochemical intercalation of oxygen in La2CuO4 single crystals was studied using electron paramagnetic resonance and magnetic susceptibility measurements. Chronoamperometric experiments showed that, in the intercalation process, the O2- diffusion in single crystals is extremely slow (D ≈ 1016cm2s-1). This diffusion coefficient depends strongly on temperature and the enthalpy diffusion was found to be ca. 750 kJ deg-1 mol-1. Crystals under electro-oxidation for one to two weeks still show the presence of the antiferromagnetic and a superconducting phases. This was supported by the simultaneous observation of line splitting in the EPR spectra and superconducting diamagnetic signal. © 1995.402209212Bednorz, Müller, (1986) Z. Phys., 64 B, p. 189Torrance, Bezinge, Nazzal, Huang, Parkin, Keane, LaPlaca, Held, (1989) Phys. Rev., 40 B, p. 8872Axe, Moudden, Hohlwein, Cox, Mohanty, Moodenbaugh, Xu, (1989) Phys. Rev. Lett., 62, p. 2751Oh-Ishi, Syono, (1991) J. Solid State Chem., 95, p. 136Torardi, Subramanian, Gopalakrishnan, Sleight, (1989) Physica C, 158, p. 465Zhou, Sinha, Goodenough, (1989) Phys. Rev., 39 B, p. 12331Wattiaux, Park, Grenier, Pouchard, (1990) C. R. Acad. Sci. (Paris), 310, p. 1047Grenier, Wattiaux, Lagueyte, Park, Marquestaut, Etorneau, Pouchard, (1991) Physica C, 173, p. 139Grenier, Wattiaux, Doumerc, Dordor, Fournes, Chaminade, Pouchard, (1992) J. Solid State Chem., 96, p. 20Chou, Cho, Johnston, (1992) Physica C, 197, p. 303Randaelli, Jorgensen, Shultz, Hunter, Wagner, Chou, Johnston, Structure of the superconducting La2CuO4+δ phases (δ≊0.08,0.12) prepared by electrochemical oxidation (1993) Physical Review B, 48 B, p. 499Chou, Johnston, Cheong, Canfield, (1993) Physic C, 216, p. 66Crank, (1975) The Mathemathics of Diffusion, , Clarendon Press, OxfordCheong, Fisk, Willis, Brown, Thompsom, Remeika, Cooper, Gruner, (1988) Solid State Commun., 65, p. 111Raveau, Michel, Hervieu, Groult, Crystal Chemistry of High-Tc Superconducting Copper Oxides (1991) Springer Series in Materials Science 15, , Springer, BerlinMacArthur, The Proton Diffusion Coefficient for the Nickel Hydroxide Electrode (1970) Journal of The Electrochemical Society, 117, p. 729Rettori, Rao, Oseroff, Amoretti, Fisk, Cheong, Vier, Schirber, (1993) Phys. Rev., 47 B, p. 815
Computer Sciences and
No full textThe increase of the complexity and advancement in ecolog-ical and environmental sciences encourages scientists across the world to collect data from multiple places, times, and thematic scales to verify their hypotheses. Accumulated over time, such data not only increases in amount, but also in the diversity of the data sources spread around the world. This poses a huge challenge for scientists who have to man-ually search for information. To alleviate such problems, ONEMercury has recently been implemented as part of the DataONE project to serve as a portal for accessing envi-ronmental and observational data across the globe. ONE-Mercury harvests metadata from the data hosted by mul-tiple repositories and makes it searchable. However, har-vested metadata records sometimes are poorly annotated or lacking meaningful keywords, which could affect effective retrieval. Here, we develop algorithms for automatic anno-tation of metadata. We transform the problem into a tag recommendation problem with a controlled tag library, and propose two variants of an algorithm for recommending tags. Our experiments on four datasets of environmental science metadata records not only show great promises on the per-formance of our method, but also shed light on the different natures of the datasets
Unprecedented Zeolite-Like Framework Topology Constructed from Cages with 3-Rings in a Barium Oxonitridophosphate
No full textA novel oxonitridophosphate, Ba19P36O6+xN66-xCl8+x(x≈4.54), has been synthesized by heating a multicomponent reactant mixture consisting of phosphoryl triamide OP(NH2)3, thiophosphoryl triamide SP(NH2)3, BaS, and NH4Cl enclosed in an evacuated and sealed silica glass ampule up to 750°C. Despite the presence of side phases, the crystal structure was elucidated ab initio from high-resolution synchrotron powder diffraction data (λ=39.998 pm) applying the charge flipping algorithm supported by independent symmetry information derived from electron diffraction (ED) and scanning transmission electron microscopy (STEM). The compound crystallizes in the cubic space group Fm3c (no. 226) with a = 2685.41(3) pm and Z = 8. As confirmed by Rietveld refinement, the structure comprises all-side vertex sharing P(O,N)4 tetrahedra forming slightly distorted 3846812 cages representing a novel composite building unit (CBU). Interlinked through their 4-rings and additional 3-rings, the cages build up a 3D network with a framework density FD = 14.87 T/1000 Å3 and a 3D 8-ring channel system. Ba2+ and Clˉ as extra-framework ions are located within the cages and channels of the framework. The structuralmodel is corroborated by 31P double-quantum(DQ) /single-quantum (SQ) and triple-quantum (TQ) /single-quantum (SQ) 2D correlation MAS NMR spectroscopy. According to 31P{1H} C-REDOR NMR measurements, the H content is less than one H atom per unit cell
