In this paper, we present a novel algorithm for dithering of gray-scale images. Our algorithm is based on the lattice Boltzmann method, a well-established and powerful concept known from computational physics. We describe the method and show the consistency of the new scheme to a partial differential equation. In contrast to widelyused error diffusion methods our lattice Boltzmann model is rota...

Progestin is a synthetic form of progesterone [4], a naturally occurring hormone [5], which plays an important role in the female reproductive cycle. During the 1950s two types of progestin [6] that were later used in birth control [7] pills were created, norethindrone [8] and norethynodrel [9]. In 1951 Carl Djerassi [10] developed norethindrone [8] at Syntex [11], SA Laboratories located in Me...

-the; A major reduction in the number of unwanted pregnancies and pregnancy terminations could be achieved if an effective method of emergency pregnancy interception (postcoital contraception) was readily available to women. This policy stakmnt describes a method which is the Yuzpe 2 + 2 regimen; the use of two tablets of estradioI/levonorgestrel, with an antiemetic, followed by a second identi...

Spermicides came into existence as a method of contraception for over hundred years. Since then, investigations and developments in this field have led to more and more fruitful as well as promising results but still left enough scope for further studies. The titled article manifests a brief discussion on the development of spermicides from different natural and synthetic sources, a compilation...

The main challenge in de novo assembly of NGS data is certainly to deal with repeats that are longer than the reads. This is particularly true for RNAseq data, since coverage information cannot be used to flag repeated sequences, of which transposable elements are one of the main examples. Most transcriptome assemblers are based on de Bruijn graphs and have no clear and explicit model for repea...

Two non-invasive optical Schlieren methods have been adapted to visualize brine channel development and convective processes in experimentally grown sea ice obtained when a NaCl aqueous solution is cooled from above in a quasi-two-dimensional Hele–Shaw cell. The two different visualization methods, i.e. traditional and synthetic Schlieren optical imaging, produce high spatial resolution images ...

Automated Theory Formation is a hybrid AI technique which has been implemented in two scientific discovery systems, HR1 and HR2, both of which have been used successfully in various applications. We describe here the latest iteration in the HR series, in terms of the lessons learned from the successes and failures of the previous versions, and how these lessons have informed our design choices ...

I the online world, customers can easily navigate to different online stores to make purchases. The products purchased on one site are often associated with product purchases on other sites (e.g., a hotel reservation on one site and a car rental on another site). Whereas market basket analysis is often used to discover associations among products for brick-and-mortar stores, it is rarely applie...