A STUDY ON THE EXAMINATION OF THE RELATIONSHIP BETWEEN LIFELONG LEARNING TENDENCY AND DIGITAL LITERACY LEVEL

Today societies think that it is important to raise individuals having the desire for lifelong learning and digital literacy skill. The fact that current information has lost its validity and the dominance of digital tools and materials in accessing information has increased as well as the rapid change experienced in science and technology prompts societies to contemplate in this way. Education process and the teachers who are the guides of this process are essential in raising individuals having the desire for lifelong learning and digital literacy skill. In this study employing relational screening model, the relation between the social studies teacher candidates’ lifelong learning tendencies and their digital literacy level is investigated and lifelong learning tendencies and digital literacy levels of the candidates are determined according to several variables. The research population is composed of 188 teacher candidates studying in the department of social studies teaching of a state university in Marmara Region of Turkey in fall semester of 2019-2020 academic years. As data collection tool “Lifelong learning scale”, “Digital literacy scale” and “Personal information form” are used. In order to determine the source of the difference among the data obtained, T-Test, Single-Factor Variance Analysis (ANOVA) and in determining the relation between the scales, Regression Analysis and Pearson’s correlation coefficient are used. The findings indicate that lifelong learning tendencies of the teacher candidates are high while their digital literacy skills are at a medium level. Another finding of the research is that the candidates’ lifelong learning tendencies vary according to gender and class level while these tendencies do not vary according to socio-economic level. Digital literacy level of the teacher candidates varies according to gender, class and socio-economic levels. The findings regarding the relation between the lifelong learning tendencies and digital literacy level indicate that there is a moderate, positive and significant relationship.  Article visualizations

THE CORRELATION BETWEEN MEDIA LITERACY AND GLOBAL CITIZENSHIP SKILLS OF PRE-SERVICE SOCILA STUDIES TEACHERS

The study aims to investigate the global citizenship and media literacy skills of pre-service social studies teachers based on various variables and determine the correlation between media literacy and global citizenship skills. The study was conducted with 502 pre-service teachers attending the Social Studies Teaching Department. The study data were collected the media literacy skills scale developed by Erişti & Erdem (2017), and the global citizenship scale adapted in to Turkish language by Şahin & Çermik (2014). The data were analyzed with the Independent Samples T test, ANOVA, Pearson product-moment correlation coefficient, and multiple regression analysis. The findings demonstrated that there were no differences between the media literacy skills of pre-service teachers based on gender and daily internet use; however, there were differences based on class level, level of use of digital tools and previous attendance in a media literacy course. It was determined that there were differences between their global citizenship levels based on gender, class level, level of use of digital tools and previous attendance in a media literacy course, and there were no differences based on daily internet use. Other study findings revealed that there was a low, positive and significant correlation between media literacy and global citizenship skills of pre-service teachers

Material Characterization of Byzantine Period Brick Masonry Walls Revealed in Istanbul (Turkey)

In this study, the characteristics of mortars and bricks used in the walls of the historical building, which were revealed during the subway station construction excavations, probably belonged to religious place, have been investigated. Results of the analyses indicated that the mortars are hydraulic but they have a low compressive strength and a high porosity. The bricks whatever used as masonry unit or aggregate were produced from calcium rich clay at a firing temperature of 850−900°C, they are of low apparent density, high porosity and relatively high compressive strength, and also show pozzolanic activity

Comparative analysis of the toxicity of gold nanoparticles in zebrafish

The use of nanoparticles - particles that range in size from 1 to 100 nanometres - has become increasingly prevalent in recent years, bringing with it a variety of potential toxic effects. Zebrafish embryos were exposed during the 3-day post-fertilisation period to gold nanospheres (GSSs), gold nanorods (GNRs), gold nanorods coated with polystyrene-sulfate (PSS-GNRs), and gold nanorods coated with both polystyrene-sulfate and polyallamine hydrochloride (PAH/PSS-GNRs). All nanorods were stabilised with cetyltrimethylammonium bromide (CTAB). GNSs were the least toxic of the nanoparticles studied, with exposure resulting in no significant changes in mortality, hatching or heart rate. Exposure to GNRs and PSS-GNRs resulted in significant increases in mortality and significant decreases in hatching and heart rate. Treatment with GNRs caused significant changes in the expression of a variety of oxidative stress genes. The toxic effects of GNRs were ameliorated by coating them with polystyrene-sulfate and, to a more marked extent, with a double coating of polystyrene-sulfate and polyallamine hydrochloride

Development of near-infrared region luminescent N-acetyl-L-cysteine-coated Ag2S quantum dots with differential therapeutic effect

Aim: N-acetyl-L-cysteine (NAC) is a free radical scavenger. We developed NAC-coated Ag2S (NAC-Ag2S) quantum dot (QD) as an optical imaging and therapeutic agent. Materials & methods: QDs were synthesized in water. Their optical imaging potential and toxicity were studied in vitro. Results: NAC-Ag2S QDs have strong emission, that is tunable between 748 and 840 nm, and are stable in biologically relevant media. QDs showed significant differences both in cell internalization and toxicity in vitro. QDs were quite toxic to breast and cervical cancer cells but not to lung derived cells despite the higher uptake. NAC-Ag2S reduces reactive oxygen species (ROS) but causes cell death via DNA damage and apoptosis. Conclusion: NAC-Ag2S QDs are stable and strong signal-generating theranostic agents offering selective therapeutic effects