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2022 ◽  
Vol 16 (1) ◽  
pp. 0-0

Watermarking is the process of embedding specific data to prove ownership copyright authentication. It is needed whenever media-files are used without proper permission is granted. The current watermarking challenge comes from the ownership proof especially as slight tampering occurs on the multimedia-file which injure the watermarking causing difficulty in its copyright proof. This paper proposes utilizing counting-based secret sharing strategy to allow validation of ownership RGB watermarking even if some of the image-file is interfered. We validate image watermarking partially as lightweight semi-complete verification, which is not possible in the normal random-stream watermarking schemes. Although the work is still in its early stage, it is promising research showing real attractive contribution opportunities. The work is tested and compared to other strategies in aspects of robustness, capacity, and security, providing attractive remarks worth noting. The study evaluation results showed interesting contribution believed to be pioneering.


2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Pouria Dadras ◽  
Alexei Kitaev

Abstract This paper is an attempt to extend the recent understanding of the Page curve for evaporating black holes to more general systems coupled to a heat bath. Although calculating the von Neumann entropy by the replica trick is usually a challenge, we have identified two solvable cases. For the initial section of the Page curve, we sum up the perturbation series in the system-bath coupling κ; the most interesting contribution is of order 2s, where s is the number of replicas. For the saturated regime, we consider the effect of an external impulse on the entropy at a later time and relate it to OTOCs. A significant simplification occurs in the maximal chaos case such that the effect may be interpreted in terms of an intermediate object, analogous to the branching surface of a replica wormhole.


Author(s):  
Dragoslav Opsenica

In this article, we publish correspondence from Danica Pinterovic addressed to the dis?tinguished professor Filaret Granic. This correspondence contains one letter and one postcard from Danica Pinterovic. It includes interesting data from her personal life as well as scientific activities. This correspondence provides an interesting contribution to the biography of F. Granic and Pinterovic. Publishing this correspondence is a small contribution to the development of our Byzantinology.


Author(s):  
Piotr Daszkiewicz ◽  
Dominika Mierzwa-Szymkowiak

Letters from Władysław Taczanowski to Alexander Strauch in the Russian Academy of Sciences Collections. An Interesting Contribution to the History of Zoology in the Nineteenth Century The article presents the Polish translation and analysis of the letters from Władysław Taczanowski (1819–1890) to Aleksander Strauch (1832–1893). The correspondence is stored in the Archive of the Russian Academy of Sciences in St. Petersburg and comprises 29 letters written between 1870 and 1889. The main theme of these letters is specimens of reptiles and amphibians sent to Warsaw by Polish naturalists, such as Benedykt Dybowski from Siberia, Konstanty Jelski from French Guiana and Peru, Jan Kalinowski from Korea, as well as specimens brought by Taczanowski from Algeria. Strauch determined the species and used them in his publications. This correspondence is also a valuable testimony of the exchange of specimens between the Warsaw Zoological Cabinet and the Zoological Museum of the Imperial Academy of Sciences in St. Petersburg. In return for herpetological specimens, the Warsaw collection received numerous fish specimens from the Russian Empire and a collection of birds from Mikołaj Przewalski’s expedition to Central Asia. The content of the letters allows a better understanding of the functioning of natural history museography but also the organization of shipments, preparation, determination, and exchange of specimens. They are a valuable document of the history of nineteenth-century scientific museography.


2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Mohamed Khalil ◽  
El-Sayed Ellaimony ◽  
Ahmed Taha ◽  
Mohamed Osman

The topic of management of stock is an energetic importance to the success of any organization and is one of the serious determinants of the continuity and efficient productivity of any organization. The study considers significant because it is hoped that on the completion, the study will provide further insights into the understanding of stock control measures. Through using vehicle service center as a reference point, the study will make an interesting contribution to the understanding of the general and specific effects of stores control in other private and public utilities. In addition, the study will further justify the need to strengthen management and control of stock with anticipated benefit in view. This paper will be proposed a mathematical model for optimal inventory policy to minimize the total inventory cost by using the assignment technique and will be applied it on a case study.


2020 ◽  
Vol 12 (23) ◽  
pp. 9998 ◽  
Author(s):  
Patricia Bachiller ◽  
Guillermo Badía

Flip teaching (FT) is a methodology with a significant impact on the educational innovation trend that encourages active learning and facilitates the learning of students. The main objective of this study is to measure the impact of flip teaching on the learning of a course at a higher education institution. To analyze the differences in the exam marks between students that follow FT and other methodologies, the t-statistic and Mann–Whitney U test have been used. Results indicate that FT allows improving the performance of students and achieving collateral capacities, such as responsibility and awareness, making learning more sustainable. This study makes an interesting contribution to existing research in education and demonstrates that it is possible to introduce FT in a block of the course and can be transferable to other courses.


2020 ◽  
Vol 75 (3) ◽  
pp. 259-269
Author(s):  
Sarah Widmer ◽  
Francisco Klauser

Abstract. The article brings together Peter Sloterdijk's theory of spheres and literatures on the socio-spatial implications of the functioning of software. By examining the growing personalization of search results for recreational places on spatial media like Foursquare, we make the case for Sloterdijk's conceptualization of “foam” offering an interesting contribution to the analysis and critique of contemporary algorithmic life, in particular with regard to the liquidity and fragility of the forms of togetherness in “co-isolation” created by such applications. In emphasizing the impermanence and ambiguities of these fleeting mediations, the article also points to the politics of these algorithmic foams, whose logics of categorization and socio-spatial sorting become increasingly difficult to understand, politically address or challenge.


2020 ◽  
pp. 026765832093516
Author(s):  
Magdalena Wrembel

This commentary discusses the recent keynote article in Second Language Research by Westergaard (2019), which is an interesting contribution to the field of language acquisition and multilingualism, especially because it attempts to provide a wider perspective by embracing first, second and third language acquisition. I address major claims put forward by Westergaard, to support them with my own research data from the domain of phonology as well as to raise some questions as to potential limitations of the approach, and to point to avenues for future theoretical and methodological refinement.


2020 ◽  
Vol 42 (1) ◽  
pp. 241-254
Author(s):  
Beata Polanowska-Sygulska

AbstractGeorge Crowder’s article makes an interesting contribution to the literature on value pluralism. Yet, as a commentary onmy essay (Polanowska-Sygulska, 2019c) it is entirely misconceived. Crowder’s reading of my text is inadequate, in terms of both the legal and the philosophical aspects of my argument. Having ascribed to me the belief that pluralism always favors cultural diversity against legal uniformity (a belief which I do nothold), he argues that a single uniform law may engender more value diversity than a multiplicity of local legal systems. This may indeed be so, but it is notmy concern. What Isaiah Berlin aimed at more than anything else was to bring about a decent society, which at times requires the pursuit of other values to be limited. I share his approach and therefore argue that, for the sake of decency, both value diversity and cultural diversity may sometimes need to be restricted.


2020 ◽  
Vol 17 ◽  
pp. 150-168
Author(s):  
Barbara Niedźwiedzka

The article discusses two books that make an interesting contribution to the development of ethical refl ection on the relationship between humans and an-imals. These are: Face to face with animals. Levinas and Animal question edited by Peter Atterton and Tamara Wright, whose authors, followers of the French philosopher Emmanuel Levinas, address the ethical status of animals in the 168BŤŵťŤŵŤ NŬŨŧȌźŬŨŧŽŮŤlight of the “Other” and “Face” concepts, and the book: Ethical Condemnation of Hunting edited by Dorota Probucka – a collection of essays exposing myths, lies and pathologies accompanying the killing of animals for sport or entertain-ment. The authors of both collections of essays draw attention to the reasons and mechanisms for excluding animals from the sphere of philosophical refl ec-tion and human morality and give strong arguments for restoring their proper ethical status.


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