This dataset presents the relationship of three affective variables (i.e. self-confidence, motivation and anxiety) with English as a foreign language (EFL) students' willingness to communicate (WTC) in face-to-face (F2F) and digital settings. Students' WTC is measured in F2F settings both inside and outside the classroom. A non-probability convenience sampling technique was employed to target the study participants. A total of 458 Indonesian EFL students completed a WTC questionnaire designed by Lee and Hsieh [1], of which 436 responses were analysed. Statistical analyses (i.e. correlation and regression calculations) were carried out on the quantitative data. The dataset is significant for the Ministry of Education and Culture (MoEC), school principals, and EFL teachers, in designing curriculum and instructional activities that enhance EFL students' willingness to communicate in the target language inside and outside classrooms, and in the digital environment. The dataset is also useful for further research evaluating students' WTC in digital settings, and addressing the issue of students' WTC in written and oral communications.This data article focuses on the arsenic in the groundwater of Rafsanjan plain in Kerman Province of Iran where the groundwater is being extensively used for drinking and irrigation of pistachio gardens. The measured arsenic concentrations range from 4 to 278 μg/L (with an average of 59 μg/L). About 85.3% of water samples have arsenic concentrations above 10 μg/L provided by the World Health Organization, WHO, guideline value.  https://www.selleckchem.com/products/cx-5461.html  This data article provides also map showing the concentration of arsenic in groundwater of Rafsanjan area based on the situation of the sampling points in Rafsanjan region.Low-grade waste heat harvesting and conversion into electric energy is an important way of renewable energy development and thermo-electrochemical cells are promising devices to solve this problem. In this paper, we report original data on the current density and maximum output power dependents on voltage of the thermos-cells with nickel hollow microspheres electrodes and different electrolyte concentration (from 0.1 to 3.0 mol/l)which exhibit excellent hypothetical Seebeck coefficient and accordingly high open-circuit voltage values at low source temperature. The composition, microstructure and morphology of the hollow nickel microspheres based electrodes are included here. Because of the low cost of nickel based thermo-cells could be commercially feasible for harvesting low-quality thermal energy, in this connection, the raw data of measurements of their properties are given here. The data is related to "High Seebeck coefficient thermo-electrochemical cell using nickel hollow microspheres electrodes", Burmistrov et al., Renewable Energy, 2020 [1].This paper accompanies the paper titled "Experimental validation for the application of the flat jack test in cob walls" presented by the same authors to the Construction and Building Materials Journal [1]. It contains data collected during the consolidation process of six cob wallettes and data collected after single and double flat jack test were applied for the first time to a set of cob wallettes at the laboratory facilities of the Department of Civil, Structural and Environmental Engineering at Trinity College Dublin. The data served to estimate the value of the dimensionless geometrical efficiency constant, Ke , and cob´s mechanical properties, namely, Young's modulus, Poisson's ratio and compressive strength. The detailed information presented here may be of interest for verification and replicability purposes.The aim of this research is to utilize reverse engineering approach for the identification of the elements and phases available in the commercial CERMET inserts with the help of characterization techniques such as Scanning Electron Microscope (SEM), Energy-dispersive X-ray spectroscopy (EDS), and X-Ray Deposition (XRD). Four commercial CERMET inserts were investigated in this research work, and the effect of the composition and phases are related to its tool wear mechanism and performance. Each CERMET insert is used to perform a turning process on a CNC lathe for machining stainless steel (SS) under the dry condition at a fixed cutting length interval. Once it completes machining for a fixed cutting length, the CERMET insert is taken out to investigate its wear mechanism with the help of SEM, EDS, XRD and using a focus-variation microscope (Alicona). A correlation analysis is performed to relate progressive tool wear mechanisms with elements and their relevant phases of various carbides. The approach of correlating wear property with the phase content will contribute to the understanding of the wear mechanism under such extreme machining conditions. It will serve as a reference for the improvement of the performance of these CERMET inserts for such harsh machining conditions by the development of protective coatings for these CERMET inserts based on the identification of the composition and phases that improves tool life and reduces wear. The data related research work can be found at "https//doi.org/10.1016/j.wear.2020.203285" [1].These datasets have been co-submitted to this journal with the research article "A multi-method analysis of the PCAOB's relationship with the audit profession" [1]. The purpose of these datasets is to assist readers of the research article in obtaining further details on two analyses performed therein a deviant case analysis of the interview data (enclosed here as Dataset 1) and content analysis of disagreement-report pairs (enclosed here as Dataset 2). These datasets could also inform future research into audit regulation by serving as a starting point in developing research ideas or as a context to settings chosen by the researchers for examination. We developed Dataset 1 by examining interviews of eight PCAOB inspectors and six audit partners who were involved in early interactions between the largest firms and the PCAOB for elements of the data that are inconsistent with the explanations and results in the research article. We developed Dataset 2 by identifying audit firm response letters during the period of 2004-2012 where there are one or more instances of explicit disagreement with the PCAOB's inspection results within the response letter.