This paper presents the results of analyses metal artefacts discovered at a multiphase site in Nowe Brzesko, Małopolskie Voivodeship, Poland. Fieldwalking prospection led to discovery steely iron objects, ploughed out on among other numerous archeological finds. A prospecting sondage yielded more corroded artefacts, identified mainly as agricultural tools (e.g. sickles, scythes). These chronolo...

North Macedonia is a crucial region for understanding the spread of agriculture into Mediterranean and Central Europe. To date, however, area has been subject to relatively limited archaeological research. Here, authors present use-wear archaeobotanical analyses on material from two Neolithic sites, Govrelevo Vrbjanska Čuka, investigate practices that were previously unstudied in this part Balk...

In this article we propose to implement a covariance structure analysis to deal with the estimation of a stochastic frontier production function on panel data and the measurement of a time-varying technical efficiency. First, this method solves the potential problem of correlations between input quantities and individual effects. Second, ind.ividual effects and efficiency measures can be recove...

In the computer vision literature, there are two lines of scientific investigation into automated mammographic risk assessment. The first focuses on the correlation between mammographic risk and the parenchymal; and the second focuses on the correlation with the overall breast density. In addition, the sensitivity of mammography is significantly reduced by increased breast density which can mas...

Viroids are the smallest agents known to be pathogenic to plants. Unlike viruses, they are devoid of a protective protein coat and are composed entirely of circular ribonucleic acid of low molecular weight (ca. 85,000-130,000 d. In spite of their small size, viroids cause serious diseases of avocado, chrysanthemum, citrus, coconut, cucumber, hop, potato and tomato. Although viroid diseases have...

Sickle cell disease (SCD) is a inherited blood disorder that impacts the shape and passage of red cells (RBCs) in vessels, which leads to several medical complications. Normal are round or oval. In people with SCD, haemoglobin present becomes defective turn change cells. Red like sickles curved persons suffering from SCD. These inflexible, adhesive may get stuck tiny starts reducing prevents mo...

Use-wear analysis of five glossed flint blades found at Ohalo II, a 23,000-years-old fisher-hunter-gatherers' camp on the shore of the Sea of Galilee, Northern Israel, provides the earliest evidence for the use of composite cereal harvesting tools. The wear traces indicate that tools were used for harvesting near-ripe semi-green wild cereals, shortly before grains are ripe and disperse naturall...