This work is an extension of the time-resolved poro-elasto-plastic Mohr-Coulomb model by Fokker et al to include a more realistic constitutive model. Experiments on Slochteren sandstone revealed that inelastic deformation contributes significantly in compressive almost all stages loading and instigated development Cam-Clay-like reproduce behavior. was adopted for current extension. A typical be...

a graph is textit{symmetric}, if its automorphism group is transitive on the set of its arcs. in this paper, we  classifyall the connected cubic symmetric  graphs of order $36p$  and $36p^{2}$, for each prime $p$, of which the proof depends on the classification of finite simple groups.

we give a survey of recent applications of group rings to combinatorics and tocryptography, including their use in the di erential cryptanalysis of block ciphers.

a kernel $j$ of a digraph $d$ is an independent set of vertices of $d$ such that for every vertex $w,in,v(d),setminus,j$ there exists an arc from $w$ to a vertex in $j.$in this paper, among other results, a characterization of $2$-regular circulant digraph having a kernel is obtained. this characterization is a partial solution to the following problem: characterize circulant digraphs which hav...

Let $Rin textbf{C}^{mtimes m}$ and $Sin textbf{C}^{ntimes n}$ be nontrivial involution matrices; i.e., $R=R^{-1}neq pm~I$ and $S=S^{-1}neq pm~I$. An $mtimes n$ complex matrix $A$ is said to be an $(R, S)$-symmetric ($(R, S)$-skew symmetric) matrix if $RAS =A$ ($ RAS =-A$). The $(R, S)$-symmetric and $(R, S)$-skew symmetric matrices have a number of special properties and widely used in eng...

Experimentally investigated patterns of changes in technological residual stresses under the influence variable pressure surface layer became 30XNS2A. A mathematical model relaxation compressive created by plastic deformation techniques with symmetrical cyclical bending samples has been proposed. An empirical expression is proposed for assessing final value as a result cyclic loading, depending...

let be a set and let be the set of subsets of . the pair in which is a collection of elements of (blocks) is called a design if every element of appears in , times. is called a symmetric design if . in a symmetric design, each element of appears times in blocks of . a mapping between two designs and is an isomorphism if is a one-to-one correspondence and . every isomorphism of a design, , to it...

ثد لانبد نم دهلا ليد لا د ا س ندده نل ا لا نةادد لانملي داملنجيدع ن ميديللأي ن ن. بإ ن ن دم ن د اعينملي دالانادمالنجيدع نلاانلد نهيجاا, ي الانا ُن, هجادلان نن ن ضا لاندنتا سيغا لانب ن د ج مييلأ ن ن دك لاندن يقسلانملي الا نسي رداندن ديمكلان ي داملن ن جيددع نلاانلدد ن دد نيددهب سن ددانتا سدديغا لانهيددهن. ددي د لانمدسددظلا ن نسدداينعلانن يددنس ن ا صادد ي نملي ددالانبدد ن دد نلدديم ا ناددليند نة ...

Incorporation of nanoparticles composed of surface-functionalized fumed silica (FS) or native colloidal silica (CS) into a nanostructured block copolymer yields hybrid nanocomposites whose mechanical properties can be tuned by nanoparticle concentration and surface chemistry. In this work, dynamic rheology is used to probe the frequency and thermal responses of nanocomposites composed of a symm...