This paper focuses on the development of a new spatial ability test in virtual reality (VR). This test measures the ability to visualize and mentally manipulate three-dimensional objects directly in 3D space, and should thus have a higher ecological validity than previous spatial ability tests. Items are viewed through head mounted displays and manipulated by means of a wireless pen input devic...

Efficiency analysis is used for assessing links between technical efficiency (TE) of livestock farms and animal diseases. However, previous studies often do not make the link with the allocation of inputs and mainly present average effects that ignore the often huge differences among farms. In this paper, we studied the relationship between exposure to gastrointestinal (GI) nematode infections,...

Assessment is considered as one of the fundamental elements in the field of foreign language acquisition. In order for communication take place, adequate number of vocabulary is needed to be known by the learners. The salient role of vocabulary in the field of foreign language acquisition resulted in the publication of several hundreds of papers and dozens of books. Due to the dominant role of ...

background: hairdressers are occupationally exposed to a number of agents in their workplace that result in respiratory symptoms and changes in pulmonary function. objective: to evaluate associations between occupational exposure and respiratory function and reported symptoms in a group of hairdressers compared to a control group. methods: a questionnaire on respiratory symptoms and workplace c...

Introduction: Solar energy is one of the free sources, clean and environmentally friendly energy. Sun is the most important source of natural ultraviolet radiation that has a major role in the life of living beings. Industrial and medical applications of ultraviolet radiation have been clearly proven, like the production of vitamin D or treatment of many diseases, and also har...

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