a module $m$ is said to be coretractable if there exists a nonzero homomorphism of every nonzero factor of $m$ into $m$. we prove that all right (left) modules over a ring are coretractable if and only if the ring is morita equivalent to a finite product of local right and left perfect rings.

Surface defects, which often occur during the production of aluminum profiles, can directly affect quality and should be monitored in real time. This paper proposes an effective, lightweight detection method for profiles to realize real-time surface defect with ensured accuracy. Based on YOLOv5s framework, a network model is designed by adding attention mechanism depth-separable convolution alu...

This paper reviews and analyzes technological design options, which have become available to date for BIPV systems on roofs facades, independently of specific products or building projects. means that this survey does not analyze existing realized buildings, but provides an overview the technologies BIPV. The starting point is analysis relevance decarbonization energy systems, providing direct ...

The persuasive techniques in propaganda campaigns impact the Internet environment and our society. Detecting has aroused broad attention natural language processing field. In this paper, we propose a novel emotion-enhanced multi-level representation learning approach for multi-modal detection. To consider emotional factors used techniques, embed text images using different networks, use fully c...

Panoptic segmentation (PS) is a complex scene understanding task that requires providing high-quality for both thing objects and stuff regions. Previous methods handle these two classes with semantic instance modules separately, following heuristic fusion or additional to resolve the conflicts between outputs. This work simplifies this pipeline of PS by consistently modeling novel framework, wh...

Let $R$ be a ring, $sigma$ be an endomorphism of $R$ and $M_R$ be a $sigma$-rigid module. A module $M_R$ is called quasi-Baer if the right annihilator of a principal submodule of $R$ is generated by an idempotent. It is shown that an $R$-module $M_R$ is a quasi-Baer module if and only if $M[[x]]$ is a quasi-Baer module over the skew power series ring $R[[x,sigma]]$.

In this paper we study the module contractibility ofBanach algebras and characterize them in terms the conceptssplitting and admissibility of short exact sequences. Also weinvestigate module contractibility of Banach algebras with theconcept of the module diagonal.

abstract. let (r,p) be a noetherian unique factorization do-main (ufd) and m be a finitely generated r-module. let i(m)be the first nonzero fitting ideal of m and the order of m, denotedord_r(m), be the largest integer n such that i(m) ⊆ p^n. in thispaper, we show that if m is a module of order one, then either mis isomorphic with direct sum of a free module and a cyclic moduleor m is isomorphi...

{ For modeling, we replace unstructured state-transition graphs with the heterogeneous modeling framework of reactive modules [AH96]. The de nition of reactive modules is inspired by formalisms such as Unity [CM88], I/O automata [Lyn96], and Esterel [BG88], and allows complex forms of interaction between components within a single transition. Reactive modules provide a semantic glue that allows...

Clock routing is critical in nano-scale VLSI circuit design. Clock routing needs to be precise to minimize circuit delay. Clock signals are strongly affected by technology scaling, the long global interconnect lines become highly resistive as line dimensions are decreased. The control of clock skew can also severely limit the maximum performance of the entire system and create catastrophic race...