This paper describes an implementation of a large heterogeneous distributed parallel computation that counts the distribution of twin primes and calculates Brun’s constant and maximal distances between pairs of twin primes. Two primes are twins if they differ by two. It is not known if there are infinitely many twin primes but it was proven that the sum of their inverses converges to the value ...

In this brief rejoinder, we respond to Farmer, Monaghan, Misyak, and Christiansen (2011). We argue that the data still do not support the claim that reading time is affected by the phonological typicality of a word for its part of speech. We also question Farmer et al.'s claim that interleaving syntactic structures in an experiment modifies grammatically based syntactic expectations.

Pasta are important foods in Europe, mainly in ltaly (25 kg/capita/year), Greece, France (6 kg) and Spain . The best products (nutritional value, cooking quality, aspect) are processed from durum wheat semolina . Because of this difference in quality, and because of the new market regulation on January 1993, that will include a free circulation between the member States of pastas made of durum ...

Figure 1: A universal VACB system layout in the Mekong Delta Figure 2a: Farmer X's egocentric knowledge flow network Figure 2b: Farmer Y's egocentric knowledge flow network Figure 2c: Farmer Z's egocentric knowledge flow network Figure 3: " Model " farmer‐based knowledge diffusion Figure 4: Brokering farmer‐based knowledge diffusion Figure 5: A constellation of networks/communities of practice ...

The flattening filter free (FFF) X-rays can provide much higher dose rate at the treatment target compared to the conventional flattened X-rays. However, the substantial increase of dose rate for FFF beams may affect the ion recombination correction factor, which is required for accurate measurements using ionization chambers in clinical dosimetry. The purpose of this work is to investigate the...

We hypothesize that institutions such as agricultural cooperatives influence regional levels of variety diversity through input supply, processing or marketing functions. This diversity can also affect yield, a partial measure of crop productivity. We test these hypotheses with data from southern Italy, a mega-diversity spot and centre of diversity for durum wheat. Cooperatives in the southern ...

Earth's water resources are critical for supporting livelihoods and food security but being increasingly overexploited to support global agriculture. Diversifying cropping systems could potentially resolve unsustainable use trade-offs with other aspects of sustainability have not yet been assessed. We performed a detailed analysis 31 different field crop rotations conducted during 1990–2019 in ...