103 research outputs found
Entropy data for the 3D core-collapse supernova simulation of a 40 solar mass progenitor done by Fornax.
No full textEntropy data (unit: kb per baryon) for the 3D core-collapse supernova simulation of a 40 solar mass progenitor done by Fornax. The entropies are saved as Numpy arrays with shape (1024, 128, 256) corresponding to the (r, theta, phi) directions.
The grid information can be read from grid.h5. The file read.py shows a demo on how to read the grid.h5 file. The demo prints R, theta, and phi of the grid as 1D arrays. Use numpy.meshgrid(R, theta, phi, indexing="ij") to create the 3D meshgrid.
The "*.xmf" files provided make it simple to be read by the open-source visualization engine Paraview (https://www.paraview.org/). Open the ".xmf" files from Paraview, and the variables will be automatically imported.
In real simulations, they are written every millisecond. However, the data in this repository are saved every 10 milliseconds because otherwise it takes too long to upload. Contact the corresponding author to acquire other data
Individual Differences and Category Learning Performance and Strategy - A scoping review protocol
No full textThis registration is the protocol of a scoping review under the working titled "Individual Differences and Category Learning Performance and Strategy - A scoping review". This report is not an update of any previous review. Author Contacts: Tianshu Zhu (corresponding author): [email protected] John Paul Minda, PhD: [email protected] Western Interdisciplinary Research Building, 1151 Richmond Street, London, ON N6A 3K7, Room 5158. Both authors contributed to the search strategy and analytic plan of this review. Any deviations from the protocol will be documented and discussed in the supplementary material of the review. Important deviations will be discussed in the review itself. This review is supported by the University of Western Ontario, which provides subscriptions to academic database and to Covidence. This institution has played no role in developing this protocol. This registration was dveloped using the PRISMA-ScR checklist
A Cu 3 BHT‐Graphene van der Waals Heterostructure with Strong Interlayer Coupling for Highly Efficient Photoinduced Charge Separation
No full textAbstract
Two‐dimensional van der Waals heterostructures (2D vdWhs) are of significant interest due to their intriguing physical properties critically defined by the constituent monolayers and their interlayer coupling. Synthetic access to 2D vdWhs based on chemically tunable monolayer organic 2D materials remains challenging. Herein, we report the fabrication of a novel organic‐inorganic bilayer vdWh by combining π‐conjugated 2D coordination polymer (2DCP, i.e., Cu
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BHT, BHT = benzenehexathiol) with graphene. Monolayer Cu
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BHT with detectable μm
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‐scale uniformity and atomic flatness is synthesized using on‐water surface chemistry. A combination of diffraction and imaging techniques enables the determination of the crystal structure of monolayer Cu
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BHT with atomic precision. Leveraging the strong interlayer coupling, Cu
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BHT‐graphene vdWh exhibits highly efficient photoinduced interlayer charge separation with a net electron transfer efficiency of up to 34% from Cu
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BHT to graphene, superior to those of reported bilayer 2D vdWhs and molecular‐graphene vdWhs. This study unveils the potential for developing novel 2DCP‐based vdWhs with intriguing physical properties.
This article is protected by copyright. All rights reserve
Global Production Networks and Industrial Upgrading in China: The Case in Electronics Contract Manufacturing.
Get PDFThe paper analyzes the networks of U.S. and Taiwan based electronics contract manufacturers in South China, today the world´s most important location for low-cost mass production in the electronics industry. Based on extensive empirical research, the paper traces the production sites, the organization of manufacturing, and the workforce policies of contract manufacturers in the region, and discusses perspectives and limits of industrial upgrading, especially with regard to the role of labor. In theoretical terms, the author attempts to integrate an analysis of "global flagship networks" with concepts of industrial sociology.
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Two essays on mobile marketing
Get PDFConsumers’ dependence on mobile technology for their daily personal and business dealings has created many new business touchpoints, which in turn bring about novel opportunities for marketers to understand consumers’ behavior and identify ways in which more effective marketing strategies can be utilized. In two essays, this dissertation explores two domains in mobile marketing where new insights can be gained.
In the first essay, we leverage data collected from IoT sensors and combine with scanner transaction data to construct and estimate the entire offline conversion funnel for brick-and-mortar retail stores. We uncover the multi-stage effect of the marketing mix, and demonstrate the value of IoT data in enabling customized marketing strategies.
In the second essay, we examine what makes mobile marketing communications effective by studying the design elements of app push notifications. We construct a theory-based framework and separate out the treatment effects of proposed design elements using a causal inference machine learning method. Our findings provide guidance for marketing managers on design choice that improves the effectiveness of future push messages.Marketin
A Vulnerable Environment Study in Karst Regions between 1991 and 2017: A Bibliometric Analysis
No full textIn order to understand the research hotspots and the development directions in the field of vulnerable karst environment, we undertook bibliometrics citation analysis on 5425 contributions to the literature written in the range from 1991 to 2017 based on the “Web of Science” core collection citation index database. Hopefully, this work will help to set up a scientific foundation for further studies. This research considered the following factors: keywords frequency, influence of author, research hotspot, reference citation network, research institution and the evolution of research topic. It was revealed that the research interests were focused on water, cave, and soil environments and implicated trends switching from a water environment to cave and eco-environment and from ecological restoration and rehabilitation to karst rocky desertification. A European-American-Chinese centered cooperation network has shown its initial form. This research will offer researchers a bird’s eye view of the global vulnerable karst environment and point out the directions of further study
Probing Cation Displacements in Antiferroelectrics: A Joint NMR and TEM Approach
No full textHigh-resolution scanning transmission electron microscopy (STEM) enjoys great advantages for atomic-resolution visualization of the atomic structure, while failing to disclose structural information along the atomic columns. On the other hand, solid-state nuclear magnetic resonance (NMR) spectroscopy is highly sensitive to the three-dimensional, local structure around atoms in the bulk sample but typically cannot provide an intuitive visualization of the structure. Thus, the combination of atomic-resolution (S)TEM and solid-state NMR spectroscopy has the potential to establish an in-depth, multidimensional structural understanding. Here, we explore this novel strategy to probe the structure of antiferroelectric perovskite oxides PbZrO3 and (Pb,La)(Zr,Sn,Ti)O3. We combine complementary information regarding the in-plane displacement vector mapping from STEM with the analysis of local PbO12 environments from 207Pb NMR spectroscopy to provide unprecedented insight into Pb displacements. For PbZrO3, an ordered 4-fold in-plane displacement modulation is clearly revealed via STEM imaging; meanwhile, the out-of-plane information is provided by two discrete 207Pb NMR signals attributed to two crystallographic Pb sites in the 2D-PASS NMR spectrum. In the chemically modified (Pb,La)(Zr,Sn,Ti)O3 system, disorder of the structure manifests in not only an inhomogeneous displacement modulation but also a broad distribution of 207Pb chemical shifts, related to significant disorder of displacement magnitudes and a favoring of larger displacements. We show that the displacement distribution depends on whether both in-plane and out-of-plane displacements or only out-of-plane displacements are considered. Our findings demonstrate the advantages in the structural analysis using combined TEM and NMR approaches, hence laying the foundation work for controlling and optimizing functional properties.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.RST/Storage of Electrochemical Energ
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