Accurate mesh-free simulation of fluid flows involving complex boundaries requires that the be captured accurately in terms particles. In context incompressible/weakly-compressible flow, SPH method is more accurate when particle distribution uniform. Hence, for time flow presence boundaries, one must have both an boundary discretization as well a uniform particles to initialize simulation. This...

It remains an open question whether statistical mechanics approaches apply to random packings of athermal particles. Although a jamming phase diagram has recently been proposed for hard spheres with varying friction, here we use a frictionless emulsion system in the presence of depletion forces to sample the available phase space of packing configurations. Using confocal microscopy, we access t...

In this paper we consider the Online Bin Packing Problem in three variants: Circles in Squares, Circles in Isosceles Right Triangles, and Spheres in Cubes. The two first ones receive an online sequence of circles (items) of different radii while the third one receive an online sequence of spheres (items) of different radii, and they want to pack the items into the minimum number of unit squares...

For each proper power of 4, n, we describe a simple explicit construction of a finite collection of pairwise disjoint open unit balls in R in which each ball touches more than 2 √ n others. A packing of balls in the Euclidean space is a finite or infinite collection of pairwise disjoint open unit balls in Rn. It is called a lattice packing if the centers of the balls form a lattice in Rn. The m...

The dense packing of hard objects is a recurrent paradigm in physics, for example in early models of crystallinity, and also in theories of granular materials which are under active debate today [1, 2]. Generally speaking the objects are taken to be spheres, leading to the formulation of the Kepler Problem (what is their closest packing?) and the investigations begun by Bernal on disordered pac...

the crystal structure of the title schiff base complex is obtained by single-crystal x-ray diffraction data.the solid state structure determination reveals that the coordination geometry around the copper(ii) center istetrahedrally distorted square-planar. the crystal packing shows one dimensional infinite chains which arisesfrom the intermolecular interaction and stabilize the crystal packing.

Packing products into a pallet or other medium is an unavoidable activity for producing companies. In many cases, packing based on operator experience and training using patterns that have worked before. Automated packing, the hand, requires systematic procedure devising solutions. scientific literature, this problem known as 3D bin (3DBP) authors proposed exact heuristic solutions variations o...

UNLABELLED The new cavity created after an open cavity tympanomastoidectomy (OCTM) is filled with an antibiotic impregnated cotton pack (cotton tape, umbilical tape, gauze). The removal of this pack usually causes some bleeding and discomfort for the patient. We propose the use of a latex biomembrane to cover the cavity, which will act as an interface between the raw bone surface and the packin...

We consider four well-studied NP-complete packing/covering problems on graphs: Feedback Vertex Set in Tournaments (FVST), Cluster Vertex Deletion (CVD), Triangle Packing in Tournaments (TPT) and Induced P3-Packing. For these four problems kernels with O(k) vertices have been known for a long time. In fact, such kernels can be obtained by interpreting these problems as finding either a packing o...

o b je c t i v e : to explore the pros and cons of early versus delayed intervention when dealing with severe blunt liver injury with significant hemoperitoneum and hemodynamic instability. m e t h o d s : this retrospective cross-sectional study was performed at the nemazi hospital, shiraz, southern iran, level i trauma center affiliated with shiraz university of medical sciences. the study po...