efficient mode shape extraction of fluid-structure systems is of particular interest in engineering. an efficient modified version of unsymmetric lanczos method is proposed in this paper. the original unsymmetric lanczos method was applied to general form of unsymmetric matrices, while the proposed method is developed particularly for the fluid-structure matrices. the method provides us with si...

Auto-Encoder (AE)-based deep subspace clustering (DSC) methods have achieved impressive performance due to the powerful representation extracted using neural networks while prioritizing categorical separability. However, self-reconstruction loss of an AE ignores rich useful relation information and might lead indiscriminative representation, which inevitably degrades performance. It is also cha...

A quadratic set of a nonsingular quadric Q Witt index at least three is defined as points intersecting each subspace in possibly reducible that subspace. By using the theory pseudo-embeddings and pseudo-hyperplanes, we show if one quadrics $$Q^+(5,2)$$ , Q(6, 2), $$Q^-(7,2)$$ then sets are precisely intersections with ambient projective space Q. In order to achieve this goal, will determine uni...

Unsupervised domain adaptation aims to align the distributions of data in source and target domains, as well assign labels domain. In this paper, we propose a new method named Domain Adaptation based on Pseudo-Label Confidence (UDA-PLC). Concretely, UDA-PLC first learns feature representation by projecting domains into latent subspace. subspace, distribution two are aligned discriminability fea...

Efficient mode shape extraction of fluid-structure systems is of particular interest in engineering. An efficient modified version of unsymmetric Lanczos method is proposed in this paper. The original unsymmetric Lanczos method was applied to general form of unsymmetric matrices, while the proposed method is developed particularly for the fluid-structure matrices. The method provides us with si...

The purpose of this work is to identify a linear time-invariant dynamic model of wastewater treatment plants with multilevel pseudo random signals as an excitation input. The plants naturally aim to remove suspended substances, organic material and phosphate. An activated sludge process becomes the best technology available to control the discharge of pollutants. For this purpose, state-space m...

In this paper, we introduce subspace-frequently hypercyclic operators. We show that these operators are subspace-hypercyclic and there are subspace-hypercyclic  operators that are not subspace-frequently hypercyclic. There is a criterion like to subspace-hypercyclicity criterion that implies subspace-frequent hypercyclicity and if an operator $T$ satisfies this criterion, then $Toplus T$ is sub...

The Grøstl hash function is one of the five finalists in the third round of SHA-3 competition hosted by NIST. In this paper, we propose some improved (pseudo) preimage attacks on the Grøstl hash function by using some techniques, such as subspace preimage attack and the guess-and-determine technique. We present the improved pseudo preimage attacks on 5-round Grøstl-256 hash function and 8-round...