Contributors:Renjini M Nair, B Bindhu, NT Manikandanath, Rimal Isaac
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.
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.
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.
Contributors:Nithia K, Farrah Dina Yusop, Yan Piaw Chua
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.
Ofrece la información descriptiva de seis encuestas latinoamericanas de envejecimiento, salud, discapacidad y/o características socioedemográficas. Este material presenta una comparación de dificultad y/o necesidad de ayuda para la realización de la vida diaria, de modo de poder comparar internacionalmente.
The codes can be used to build the dependencies of the critical angle of crack deflection along the interface on the load level (code 1) or the inverse relative crack length (code 2) for various values of the strength contrast and load biaxiality.
The dataset contains data for two numerical experiments simulating chemical dissolution of rock matrix. Experiments are done for 2D models generated as a truncated Gaussian field. The input parameters such as pressure drop, diffusion coefficient and reaction rate varied as provided in files ParN.txt. Output parameters are time-dependent porosity, permeability, and tortuosity of the pore space. Also the barcodes for connectivity components of the rock matrix are provided in files BarcodesXXXX.txt to characterize the changes in topology of the pore space and rock matrix.
Dataset is described in a paper which will be submitted June 5 2020 or soon after, for review, as a journal article "Estimates of dissipation of wave energy by sea ice for a field experiment in the Southern Ocean, using model/data inversion" by Rogers, Meylan, and Kohout