University of Rijeka

About: University of Rijeka is a education organization based out in Rijeka, Croatia. It is known for research contribution in the topics: Population & Tourism. The organization has 3471 authors who have published 7993 publications receiving 110386 citations. The organization is also known as: Rijeka University & Sveučilište u Rijeci.

The prevalence of non-carious cervical lesions in permanent dentition

Abstract: A non-carious cervical lesion (NCCL) is the loss of hard dental tissue on the neck of the tooth, most frequently located on the vestibular plane. Causal agents are diverse and mutually interrelated. In the present study all vestibular NCCL were observed and recorded by the tooth wear index (TWI). The aim of the study was to determine the prevalence and severity of NCCL. For this purpose, 18555 teeth from the permanent dentition were examined in a population from the city of Rijeka, Croatia. Subjects were divided into six age groups. The teeth with most NCCL were the lower premolars, which also had the largest percentage of higher index levels, indicating the greater severity of the lesions. The most frequent index level was 1, and the prevalence and severity of the lesions increased with age.

Orchestrating technology enhanced learning: a literature review and a conceptual framework

Abstract: The notion of 'orchestrating learning' has gained acceptance within the TEL research community in recent years. However, there is little consensus about what 'orchestration' means, and what orchestrating learning in a concrete educational context entails. This paper aims to address these two concerns. Through a literature review focused especially on the field of TEL, we provide definitions of this orchestration, and gather the most commonly cited aspects of orchestration into a unified conceptual framework. This emergent framework is then used as an analytical lens to structure data from an existing case study in order to illustrate its usefulness as a tool to understand and propose new solutions to aid orchestration in complex, real-world TEL situations. Although further theorisation and modelling of orchestration is still needed, the presented framework provides a first step, backed up by a serious review of the field.

Morphology and mixing state of aged soot particles at a remote marine free troposphere site: Implications for optical properties

Abstract: The radiative properties of soot particles depend on their morphology and mixing state, but their evolution during transport is still elusive. Here we report observations from an electron microscopy analysis of individual particles transported in the free troposphere over long distances to the remote Pico Mountain Observatory in the Azores in the North Atlantic. Approximately 70% of the soot particles were highly compact and of those 26% were thinly coated. Discrete dipole approximation simulations indicate that this compaction results in an increase in soot single scattering albedo by a factor of <= 2.17. The top of the atmosphere direct radiative forcing is typically smaller for highly compact than mass-equivalent lacy soot. The forcing estimated using Mie theory is within 12% of the forcing estimated using the discrete dipole approximation for a high surface albedo, implying that Mie calculations may provide a reasonable approximation for compact soot above remote marine clouds.