Abstract We aim to facilitate the daily-life activities of frail or elderly people in collaboration with mobile assistive robots through means a digital twin-powered smart home. Being able quickly and efficiently produce twin human user’s environment, can help further develop personalized solutions. As our first investigation toward this goal, we describe proof-of-concept “digital twin-driven h...

in this paper, we investigate various kinds of extensions of twin-good rings. moreover, we prove that every element of an abelian neat ring r is twin-good if and only if r has no factor ring isomorphic to z2  or z3. the main result of [24] states some conditions that any right self-injective ring r is twin-good. we extend this result to any regular baer ring r by proving that every element of a...

The paper concerns the definition of a novel ontology for cultural heritage based on concept digital twin. The ontology, called Heritage Digital Twin is compatible extension well-known CIDOC CRM ISO standard documentation and incorporates all different systems presently in use documentation. In authors’ view, it supports interoperability at higher level than ones currently enables effect...

The development of modern production systems is taking place in the context transition to concept Industry 4.0. In these conditions, competitiveness determined by volume and depth implementation digital technologies. These technologies include twin. Recently, a lot research has been devoted twins. use twins offers many advantages, both technical economic. This article provides systematization "...

In this paper, we investigate various kinds of extensions of twin-good rings. Moreover, we prove that every element of an abelian neat ring R is twin-good if and only if R has no factor ring isomorphic to‌ Z2  or Z3. The main result of [24] states some conditions that any right self-injective ring R is twin-good. We extend this result to any regular Baer ring R by proving that every elemen...

Behavior genetic approaches are becoming increasingly popular in political science. Many studies, to date, used a classical twin design to explore both political participation and ideological self-placement in Western democracies but studies in different political contexts, such as post-communist countries, are scarce. This paper is the first to explore the heritability of ideology and politica...

This paper estimates the causal effect of teenage childbearing on educational attainment using two cohorts of Australian twins and their relatives. Our main finding is that the negative effect of teenage childbearing on educational attainment appears to be small. We find no difference in educational attainment between teen mothers and their identical twin sisters. Data on the relatives of the t...

Let $D$ be a finite simple digraph with vertex set $V(D)$ and arcset $A(D)$. A twin signed total Roman dominating function (TSTRDF) on thedigraph $D$ is a function $f:V(D)rightarrow{-1,1,2}$ satisfyingthe conditions that (i) $sum_{xin N^-(v)}f(x)ge 1$ and$sum_{xin N^+(v)}f(x)ge 1$ for each $vin V(D)$, where $N^-(v)$(resp. $N^+(v)$) consists of all in-neighbors (resp.out-neighbors) of $v$, and (...

The concept and technology of a digital twin, which represent replica real object in virtual space called Industry 4.0, are widely used across all industries purposes. Similarly, the architecture, engineering, construction (AEC) industries, there is an urgent need to develop BIM, form twin based on 3D models, for purpose improving productivity reducing costs. Bridge structures required be safe,...