نتایج جستجو برای: flat b cover
تعداد نتایج: 1055107 فیلتر نتایج به سال:
Concerns on fine dust originated from agricultural lands such as reclaimed tidelands located in the western coastal area of South Korea is increasing. Saemangeum land (RTL), which area, inherently susceptible to windblown due strong westerly winds and relatively flat terrain with few hills or mountains. In addition, RTL has a low organic matter content (<5%) thus soils are also wind erosion. Th...
individuals with particular genetic backgrounds develop immune responses to wheat proteins and become ‘gluten-sensitised’. mucosal pathology arises through activated mucosal t lymphocytes, resulting in a graded, adverse e reaction between particular genes and wheat proteins. given these varied influences, the marsh classification broadly itemises those stages through which a normal mucosa (mars...
A reversible data hiding scheme based on double image encryptions and spatial correlation comparisons is proposed, which improves the performance of two previous methods when dealing with flat cover images. A grayscale cover image is first encrypted. The four LSBs of each block pixel in the resulting encrypted image are encrypted once more to embed a message bit, thereby solving the problem of ...
We study several questions involving relative Ricci-flat Kähler metrics for families of log Calabi-Yau manifolds. Our main result states that if $p:(X,B)\to Y$ is a fiber space such $(X\_y, B|{X\_y})$ generically klt, $K{X/Y}+B$ relatively trivial and $p\_\*(m(K\_{X/Y}+B))$ Hermitian flat some suitable integer $m$, then $p$ locally trivial. Motivated by in birational geometry, we investigate th...
Convex polygons, shapes bounded by straight lines in which all of the corners point outward, are simplest shapes, but despite their simplicity, there many unsolved problems concerning polygons. Some polygons have nice property that they fit together espcially well, so you can use lots copies them to cover a large surface form what is called tiling. For some such as triangles, it easy see how ti...
Recently two different concepts of covers of acts over monoids have been studied by a number of authors and many interesting results discovered. One of these concepts is based on coessential epimorphisms and the other is based on Enochs’ definition of a flat cover of a module over a ring. Two recent papers have suggested that in the former case, strongly flat covers are not unique. We show that...
BACKGROUND The flat-headed cat (Prionailurus planiceps) is one of the world's least known, highly threatened felids with a distribution restricted to tropical lowland rainforests in Peninsular Thailand/Malaysia, Borneo and Sumatra. Throughout its geographic range large-scale anthropogenic transformation processes, including the pollution of fresh-water river systems and landscape fragmentation,...
In this paper, the analytical solutions of Brans-Dicke (B-D) equations with cosmological constant are presented, in which the equation of state of the universe is P=mÙ° ρ , under the assumption φRn=c between the B-D field and the scale factor of the universe. The flat (K=0) Robertson- Walker metric has been considered for the metric of the universe. These solutions are rich in the sense that ...
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