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  • Corrosion and Electrochemical Impedance Spectroscopy data of Copper in 1.0 M HCl in the presence and absence of corrosion inhibitors gum arabic, sodium alginate and their blends. The data set also contains the XRD data and SEM image of polymer blends of gum arabic and sodium alginate. SEM and AFM images of the Copper coupons before and after electrochemical corrosion studies are also presented.
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  • This data to support the quantitative research of knowledge sharing intentions
    Data Types:
    • Tabular Data
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  • Формирование в России как суверенном государстве открытого общества с развитыми международными связями, настоятельная потребность интеграции в мировую культуру определяют новый социальный заказ общества по отношению к владению иностранными языками. Одной из важнейших проблем в этой связи явилась разработка Программы непрерывного обучения иностранным языкам. Дальнейшей разработки требует проблема преемственности. Новые технологии с распространением Интернет занимают значительное место в образовании, в том числе в обучении иностранным языкам.
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  • There are 3345 groups training data which come from conventional wireline logging of Yan'an gas field and 3345 groups test data which come from logging while drilling of Yan'an gas field in the data file.
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    • Tabular Data
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  • Research data are collected via an online self-administered questionnaire from a sample of Moroccan consumers of a dairy brand. The questionnaire was self-administered via the Google Forms tool during the months of April 2020. A total of 195 responses from consumers were received, including 110 women and 85 men. The age of the respondents varies between 16 and 60 years old with an average age of 24.9587. In addition, 78.6% of the respondents are single, 19.5% married and 1.9% divorced. The findings indicate a positive influence of consumer satisfaction on brand attitude, brand preference, and purchase intentions.
    Data Types:
    • Tabular Data
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  • In considering route optimization at a series of express stages from pickup to delivery via the intercity linehaul, we introduce the two-echelon vehicle routing problem with satellite bi-synchronization (2E-VRP-SBS) from the perspective of modeling the routing problems of two-echelon networks. The 2E-VRP-SBS involves the inter-satellite linehaul on the first echelon, and the pickups from senders to origin satellites (i.e., satellites for cargo collection) and deliveries from destination satellites (i.e., satellites for cargo deliveries) to receivers on the second echelon. The 2E-VRP-SBS integrates satellite bi-synchronization constraints, multiple vehicles, and time window constraints on the two-echelon network and aims to find cost-minimizing routes for various types of trucks. Small-scale instances. Considering the computing abilities of CPLEX 12.4 indicated by some computational trials, there are one depot, three origin satellites, and three destination satellites on the first echelon. The number of senders or receivers served by an origin satellite or a destination satellite is assumed to be the same, and the number of senders or receivers served by a satellite is 5, 6, 7, 8, or 9. Each small-scale instance is denoted by num_os-num_ds-num_gc-sn, where num_os or num_ds denotes the number of origin satellites or destination satellites, num_gc is the number of senders or receivers served by a satellite, sn is the instance sequence for the same num_os, num_ds, and num_gc, and sn is 1, 2, 3, 4, 5, 6, 7, 8, or 9. We designed the large-scale instances by referring to data provided by a logistics company in China. Referring to the locations of 17 distribution-centers (DCs), which are located in 17 prefecture-level cities in Shandong province, we designed the nodes on the first echelon as follows. First, it is assumed that each DC can be used as the depot, i.e., the depot location is the same as one of the DC locations. The large-scale instances are distinguished by the location of the depot. Second, there are 17 origin satellites with different locations, and the location of an origin satellite is the same as the location of a DC. Third, there are 17 destination satellites with different locations. The location of a destination satellite is the same as the location of a DC, and the location of an origin satellite should not be the same as the location of a destination satellite, if there are inter-satellite linehaul demand between the origin satellite and the destination satellite. Generally speaking, we designed 17 large-scale instances that are distinguished by the location of the depot. The number of senders or receivers served by an origin satellite or a destination satellite is assumed to be the same. The number of senders or receivers served by a satellite is 120. The sending-receiving relationships between senders served by an origin satellite and receivers served by destination satellites are randomly generated.
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  • These data sets are aimed to full fill required publication criteria in Data In Brief. First dataset is a list of self-made authentic-based competency assessment rubric that was developed especially for the use for Multimedia Production subject in secondary school. Second dataset is content evaluation data by six evaluation panels that was recorded by Google Form. The rubric was evaluated for its content validity through an online form (Google Form). The third is the dataset of analysis on content validity using Content Validity Ratio (CVR) and Content Validity Index (CVI) based on Lawshe Method (1975). The dataset is important for teachers, assessors and policy makers for designing an effective authentic-assessment rubric for evaluating students’ competency in vocational education especially in secondary school. The datasets give initial insights into designing and developing a rubric to cater the needs of the current assessment method especially in secondary school’s vocational education. Furthermore, it can be tested with adjustments in criteria in other subjects or other language, even in multi-cultural country to gain more depth and understandings on the rubric.
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  • Data obtained by testing materials for replacement of sand slag with natural sand in concrete and subsequent analysis which includes comparison and calculation
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    • Tabular Data
    • Dataset
  • En se basant sur les résultats de recherches réalisés ces derniers années, il a été démontré que le Ratio de Concentration présente une influence sur la performance global des collecteurs solaires cylindro-parabolique. Notament ce paramètre influe sur l'entropie et l'efficience thermique. De ce fait, sa variation pourait également avoir des conséquences sur l'éfficience optique du concentrateur. C'est a juste titre qu'il a été entrepris cette étude qui vise a comparer l'éfficience optique de trois modèles de concentrateurs distingués par trois differentes ratio de concentration en les simulant numeriquement para la méthode MCRT atravers le logiciel SolTrace. En effet, les trois valeurs du ratio de concentretion e les données de simulation ont été obtenus en optimisant les paramètres géométriques e optiques du concentrateur par le biais des équations mathématiques qui gouvernent son fonctionement. La simulation numérique a été fait en maintenant la distance du foyer constante a 1,75. Après la simulation numérique, les resultats obtenus sont présentés sous deux banques de données pour chaque modèle de collecteur : le flux de chaleur autour de du tube absorbeur e les points dínterssections des rayons solaires avec les éléments du concentrateur.
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  • Title: Fossil isotopic constraints (C, O and 87Sr/86Sr) on Miocene shallow marine incursions in Western and Eastern Amazonia: Supplementary Materials Version: 1.0 Date of Release: 2020/06/05 Identifier: doi: 10.17632/2smgvjr7np.1 Permalink: http://dx.doi.org/10.17632/2smgvjr7np.1 Contact information: Andre M. V. Alvim, Universidade de Brasilia, Darcy Ribeiro Campus, Asa Norte 70910-900 Brasilia, DF - Brazil, andre.mavaal@gmail.com Dates of data collection: 11/2018-12/2019 This directory contains the following supplementary materials: • Table 1 - Geographic location and stratigraphic position of the analyzed Miocene fossil samples. • Table 3 - Table of isotopic and geochemical data of the analyzed Miocene fossil samples. • Table 4 - Vital effect analysis using the stable isotopic composition of the analyzed Miocene fossil samples. • Table Extra - Binary mixing models for paleosalinity estimates of figure 6 of the manuscript Tables 1, 3 and 4 above are cited in the original manuscript. In manuscript results and discussion sections, Table 3 and Table Extra had the following roles: • Table 3 - Stable and strontium isotopic data from this table were treated in Origin software (version Pro 8) in order to elaborate the Figures 3 and 4 of the manuscript; • Table Extra - The mixing models presented in Figure 6 of the manuscript were calculated in this table using strontium isotopic data from Table 3 (above), and Equation 1 and Table 5 of the manuscript.
    Data Types:
    • Tabular Data
    • Dataset