In this review article, empirical studies published from 2004 through 2014 on second-language (L2) oral proficiency testing are analyzed, with a specific focus on discourse and social interaction in such tests. Taking three common test setups, oral proficiency interviews (OPIs), paired peer tests, and group peer tests as an organizing principle for the studies examined, recent developments in L...

Abstract This study aims to analyse the spatio-temporal trends in water quality, trophic state, and organic contamination of an alpine lake Darjeeling Himalaya through field investigations portray a comprehensive picture using multivariate analysis. Analysed parameters have shown notable seasonal variations were within acceptable range for inland surface water. Water quality index (WQI) polluti...

Kurikulum adalah bagian penting dalam proses pembelajaran bahasa. Dalam kurikulum bahasa Arab yang berdasarkan KMA 183 tahun 2019 perlu kiranya untuk dikaji standar kompetensinya bahan ajar sehingga nantinya capaian hasil tidak hanya memenuhi kebutuhan secara nasional melainkan juga bisa internasional. Di dunia Internasional sudah banyak berkembang standart-standart bahkan di setiap benuanya me...

One of the most effective ways for estimating impact and severity line failures on static security power system is contingency analysis. The categorization approach uses overall performance index to measure system's (OPI). newton raphson (NR) load flow technique used extract network variables in a situation each transmission failure. Static categorised into five categories this paper: secure (S...

Semantic Textual Similarity (STS) evaluation assesses the degree to which two parts of texts are similar, based on their semantic evaluation. In this paper, we describe three models submitted to STS SemEval 2017. Given two English parts of a text, each of proposed methods outputs the assessment of their semantic similarity. We propose an approach for computing monolingual semantic textual simil...

Plasmonic metal Ag nanoparticles (AgNPs) on TiO2 thin films (AgNPs/TiO2) are a kind of excellent photocatalyst of high efficiency under visible light, and thus draw great interest nowadays. Further improvement of their photocatalytic activity (PA) is difficult but is of high importance for their applications. In this paper, oxygen plasma was taken to partially oxidize AgNPs deposited on the sur...

The failure reasons of reciprocating sealing in OPI-1800AWS fracturing pump are analyzed by scanning electron microscope technology (SEMT). The lubrication mechanism of plunger seal friction pair is analyzed by hydrodynamic lubrication theory. During its discharge and suction stroke, the reciprocating sealing friction pair meets the conditions of hydrodynamic lubrication, a certain thickness of...