Für unterschiedlichste Ansprüche bietet die Schaumann aus dem österreichischen Taufkirchen erstklassiges Tierfutter an. Damit im Stall nichts verwechselt werden kann, alle Futtersäcke noch vor der Befüllung mit zahlreichen Produktinformationen sowie ein- und zweidimensionalen Codes gekennzeichnet.

This work aims to study of the stability of two generalizations of the functional equation f (pr,qs)+ f (ps,qr) = f (p,q) f (r,s) , namely (i) f (pr,qs)+g(ps,qr) = h(p,q)h(r,s) , and (ii) f (pr,qs)+ g(ps,qr) = h(p,q)k(r,s) for all p,q,r,s ∈ G , where G is a commutative semigroup. Thus this work is a continuation of our earlier works [15] and [16], and the functional equations studied here arise...

Recently a generalization of Francis’s implicitly shifted QR algorithm was proposed, notably widening the class of matrices admitting low-cost implicit QR steps. This unifying framework covered the methods and theory for Hessenberg and inverse Hessenberg matrices and furnished also new, single-shifted, QR-type methods for, e.g., CMVmatrices. Convergence of this approach was only suggested by nu...

The adoption of a new technology is often affected by its perceived utility and ease of use, both of which could vary by age due to cognitive differences. A recently invented technology, the quick response (QR) code, enables smartphone users to access content on their mobile devices by scanning two-dimensional barcodes. In this paper, we examine awareness, knowledge, and usage of QR codes acros...

This guideline for care of children with craniosynostosis was developed by a national working group with representatives of 11 matrix societies of specialties and the national patients’ society. All medical aspects of care for nonsyndromic and syndromic craniosynostosis are included, as well as the social and psychologic impact for the patient and their parents. Managerial aspects are incorpora...

Aggressive early deflation has proven to significantly enhance the convergence of the QR algorithm for computing the eigenvalues of a nonsymmetric matrix. One purpose of this paper is to point out that this deflation strategy is equivalent to extracting converged Ritz vectors from certain Krylov subspaces. As a special case, the single-shift QR algorithm enhanced with aggressive early deflation...

This article proposes an anti-fake QR codes watermarking algorithm based on the DWT and SVD, aiming at the security problem of QR code in the actual application. Firstly, this paper analyses the advantage of QR code as well as its problems. Secondly, the principle of the chaos encryption and discrete wavelet transform are introduced in detail. Then, we design a new watermarking barcode by the c...

In this paper we discuss the deflation criterion used in the extended QR algorithm based on the chasing of rotations. We provide absolute and relative perturbation bounds for this deflation criterion. Further, we present a generalization of aggressive early deflation to the extended QR algorithms. Aggressive early deflation is the key technique for the identification and deflation of already co...

In this paper we propose an e-voting authentication scheme combined with QR-codes and visual cryptography. We focus on the usability, in order to supply voters with less technical experience with a usable scheme. The only requirement is that the user needs to handle a device containing a QR-code reader, most probably a smartphone. This approach is based on visual cryptography as the work horse:...