Scene analysis is concerned with the reconstruction of d-dimensional objects, such as polyhedral surfaces, from (d− 1)-dimensional pictures (i.e., projections of the objects onto a hyperplane). In this paper we study the impact of symmetry on the lifting properties of pictures. We first use methods from group representation theory to show that the lifting matrix of a symmetric picture can be tr...

The production of heavy oil at Dong Do field located in CuuLong basin is a success the application advanced technologies. marginal project Vietnam, so its development requires to overcome several challenges, such as high water-cut from early stage, highly unconsolidated sandstone reservoir, flow assurance problems sour and viscous crude oil, power artificial lift system, complex treatment topsi...

Abstract Aquifer storage and recovery systems using multiple partially penetrating wells (MPPW-ASR) can form a viable solution to the problem of freshwater buoyancy when brackish aquifers for storage. This study presents result series laboratory experiments that aimed at visualizing shape bodies injected into aquifer determining effect on efficiency (RE) several MPPW-ASR operational variables. ...

We introduce a filtration on the simplicial homology of finite complex X using bi-colourings its vertices. This yields two dual theories closely related to discrete Morse matchings X. give an explicit expression for associated graded object these homologies when is matching Tait graph plane G, in terms subgraphs determined by certain G. then use one homologies, case where graph, define conjectu...

The conifer tree species Norway spruce ( Picea abies ), silver fir Abies alba ) and Douglas Pseudotsuga menziesii are important elements in composition forest management of Central European forests, but their potential to thrive under anticipated climatic changes is still debated controversially. This study contributes a multivariate analysis resilience components based on increment cores sampl...

The ellipsoid body, a doughnut-shaped part of the fly brain, is essential for visual working memory. Gaseous second messengers establish a functional ellipsoid body and act as a short-term aid in orientation behavior.

the analytical theory of one dimensional, dispersion free miscible displacement of oil by injection gas with nc component has shown that: the mmp is the lowest pressure at which any one of the initial oil, injection gas or crossover key tie lines becomes critical, which means that its length approaches to zero. in this paper, we propose a method for a solving multi component system based on ana...

the main objective of this paper is to examine the effect of nanomaterials on mass transfer coefficient in bubble type absorption of carbon dioxide by experiment. the absorption process is carried out in a bubble column and in room temperature. mass transfer coefficient, saturated concentration of co2, and gas holdup are determined in this system. the kinds of nanomaterials, the concentrations ...