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175.799  Articles
1 of 17.581 pages  |  10  records  |  more records»
Background: Uncorrected refractive error is experienced by at least 45 million productive-aged adults (aged 16–45 years old) and 13 million children (aged 5–15 years old), and being the main cause of visual impairment in children worldwide and third cause... see more

The purpose of this study was to analyze physical activity (PA) habits and perceived barriers to PA in high school students from the municipality of Santa Maria, state of Rio Grande do Sul, Brazil. A total of 424 students with a mean age of 15.69 (±0.9) y... see more

Engeström’s (1987, 1999) innovations in cultural-historical activity theory emphasise the role of contradictions in analysing and transforming learning in practice. This paper considers some of the problems and possibilities contained in his analytical un... see more

Human activity recognition (HAR) is one of those research areas whose importance and popularity have notably increased in recent years. HAR can be seen as a general machine learning problem which requires feature extraction and feature selection. In previ... see more

The purpose of this work is to analyse the main indicators of foreign trade in goods in general in Ukraine and in the context of joint ventures, and an analysis of changes in absolute indicators of foreign trade activity of a joint venture in the dynamics... see more

Research in Saudi Arabia has revealed a shocking level of insufficiently physically active adults, particularly women. The risk of sedentary behavior will likely increase as the number of women with office-based jobs increases. The aim of this study is to... see more

As the company's business grows, there product distribution network will increase. This will cause distribution costs to be increase. Therefore, the company decided to build a new warehouse in order to increase the efficiency of distribution costs. This n... see more

Social work education in Ukraine has changed dramatically over the last decades. It has a strong connection with the evolution of social work education as a field of professional practice. Recent changes in Ukrainian social policy, in particular the imple... see more

ABSTRAKVariasi perubahan frekuensi kritis lapisan F2 (foF2) dan ketinggian lapisan F2 (h'F2) di atas Kupang selama tahun 2014 mengalami perubahan yang bervariasi dimana hal ini bergantung pada aktivitas matahari, semakin tinggi tingkat aktivitas matahari ... see more

1 of 17.581 pages  |  10  records  |  more records»