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2022 ◽  
Vol 3 (2) ◽  
pp. 231-238
Author(s):  
K. M. Nagaraja ◽  
Ambika M. Hejib ◽  
R. Sampathkumar ◽  
B.S. Venkataramana
Keyword(s):  

2021 ◽  
Vol 26 (4) ◽  
pp. 372-376
Author(s):  
Aliodor Manolea

Abstract The study highlights aspects of the hybrid war waged by the Russian Federation in order to maintain, strengthen its areas of influence, penetrating areas inaccessible by classical means. The paper brings to the fore the nationalist interests, characteristics, objectives, tools and means used by the Russians in the current hybrid war. Using a reflective logic regarding the fact that there is a current of opinion in the US Armed Forces that argues that the real challenge for the United States is not the asymmetric war but the Transcendent War, I express the opinion that the Russian Federation also considers this issue. In this context, I draw attention to the research conducted in Romania on Distal Psychoinformational Influence as an offensive-defensive weapon that manifests itself without material support and acts subliminally, transcendently, in operations of knowledge, influence, domination and control of the opponent, both psychoemotional as well as somatic.


Cryptography ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 32
Author(s):  
Emad Hamadaqa ◽  
Saleh Mulhem ◽  
Wael Adi ◽  
Mladen Berekovic

Internet of things (IoT) technologies have recently gained much interest from numerous industries, where devices, machines, sensors, or simply things are linked with each other over open communication networks. However, such an operation environment brings new security threats and technology challenges in securing and stabilizing such large systems in the IoT world. Device identity in such an environment is an essential security requirement as a secure anchor for most applications towards clone-resistant resilient operational security. This paper analyzes different contemporary authenticated identification techniques and discusses possible future technologies for physically clone-resistant IoT units. Two categories of identification techniques to counteract cloning IoT units are discussed. The first category is inherently cloneable and includes the classical identification mechanisms based on secret and public key cryptography. Such techniques deploy mainly secret keys stored permanently somewhere in the IoT devices as classical means to make units clone-resistant. However, such techniques are inherently cloneable as the manufacturer or device personalizers can clone them by re-using the same secret key (which must be known to somebody) or reveal keys to third parties to create cloned entities. In contrast, the second, more resilient category is inherently unclonable because it deploys unknown and hard to predict born analog modules such as physical unclonable functions (PUFs) or mutated digital modules and so-called secret unknown ciphers (SUCs). Both techniques are DNA-like identities and hard to predict and clone even by the manufacturer itself. Born PUFs were introduced two decades ago; however, PUFs as analog functions failed to serve as practically usable unclonable electronic identities due to being costly, unstable/inconsistent, and non-practical for mass application. To overcome the drawbacks of analog PUFs, SUCs techniques were introduced a decade ago. SUCs, as mutated modules, are highly consistent, being digital modules. However, as self-mutated digital modules, they offer only clone-resistant identities. Therefore, the SUC technique is proposed as a promising clone-resistant technology embedded in emerging IoT units in non-volatile self-reconfiguring devices. The main threats and expected security requirements in the emerging IoT applications are postulated. Finally, the presented techniques are analyzed, classified, and compared considering security, performance, and complexity given future expected IoT security features and requirements.


Author(s):  
Monika Nowicka ◽  
Alfred Witkowski

AbstractWe show optimal bounds of the form $$Q_\alpha<M<Q_\beta $$ Q α < M < Q β , where $$\begin{aligned} Q_\alpha (x,y)={\mathsf {A}}(x,y)\frac{{\mathsf {A}}^2(x,y)}{(1-\alpha ){\mathsf {A}}^2(x,y)+\alpha {\mathsf {G}}^2(x,y)} \end{aligned}$$ Q α ( x , y ) = A ( x , y ) A 2 ( x , y ) ( 1 - α ) A 2 ( x , y ) + α G 2 ( x , y ) and M belongs to a broad class of classical homogeneous, symmetric means of two variables.


Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 4855
Author(s):  
Olga V. Zhukova ◽  
Evgenia V. Arkhipova ◽  
Tatyana F. Kovaleva ◽  
Sergey A. Ryabov ◽  
Irina. P. Ivanova ◽  
...  

Cytostatic chemotherapeutics provide a classical means to treat cancer, but conventional treatments have not increased in efficacy in the past years, warranting a search for new approaches to therapy. The aim of the study was, therefore, to obtain methacrylic acid (MAA) (co)polymers and to study their immunopharmacological properties. 4-Cyano-4-[(dodecylsulfanylthiocarbonyl)sulfanyl] pentanoic acid (CDSPA) and 2-cyano-2-propyl dodecyl trithiocarbonate (CPDT) were used as reversible chain transfer agents. Experiments were carried out in Wistar rats. The MTT assay was used to evaluate the cytotoxic effect of the polymeric systems on peritoneal macrophages. An experimental tumor model was obtained by grafting RMK-1 breast cancer cells. Serum cytokine levels of tumor-bearing rats were analyzed. The chain transfer agents employed in classical radical polymerization substantially reduced the molecular weight of the resulting polymers, but a narrow molecular weight distribution was achieved only with CDSPA and high CPDT concentrations. Toxicity was not observed when incubating peritoneal macrophages with polymeric systems. In tumor-bearing rats, the IL-10 concentration was 1.7 times higher and the IL-17 concentration was less than half that of intact rats. Polymeric systems decreased the IL-10 concentration and normalized the IL-17 concentration in tumor-bearing rats. The maximum effect was observed for a MAA homopolymer with a high molecular weight. The anion-active polymers proposed as carrier constituents are promising for further studies and designs of carrier constituents of drug derivatives.


2021 ◽  
pp. 60-62
Author(s):  
A. V. Filipov

During the first seven years of his life, the child receives a huge amount of knowledge about the world around him. The development of the child's thinking during this period and the results of his knowledge of the world around him affect the further educational activities of the preschooler. Thanks to the development of thinking, a child is able to imagine an image of an object and its properties in the absence of the object itself, based only on previously received information. In a child in the early and preschool years of life, game is the main activity for forming a personality. Didactic games facilitate the process of all-round development of children. Various tasks solved in didactic games are presented for children in an interesting and attractive form of activity. In a computer game, using simulation, it becomes possible to demonstrate objects and phenomena that are inaccessible to a child in the real world. The use of didactic computer games not only increases the preschooler's motivation to learn new material, but also contributes to the development of thinking. An educational computer game acts as a mentor for a child. However, the lack of communication with a living, and not virtual, mentor causes a negative effect both on the development of the child's speech and the formation of his communicative abilities. Therefore, a computer game cannot be perceived as a complete alternative to the classical means of teaching and educating preschoolers.


2021 ◽  
Vol 48 (3) ◽  
pp. 79-80
Author(s):  
Gayane Vardoyan ◽  
Saikat Guha ◽  
Philippe Nain ◽  
Don Towsley

Protocols that exploit quantum communication technology offer two advantages: they can either extend or render feasible the capabilities of their classical counterparts, or they exhibit functionality entirely unachievable through classical means alone. For an example of the former, quantum key distribution protocols such as E91 [2] and BBM92 [1] can in principle yield information-theoretic security by using entanglement to generate secure key bits. These raw secret key bits can then be distilled into a one-time pad to encode messages sent between two parties. For an example of the latter, distributed quantum sensing frameworks such as [3] and [11] employ entanglement to overcome the standard quantum limit [4].


Photoniques ◽  
2021 ◽  
pp. 50-54
Author(s):  
Thierry Debuisschert

Quantum sensing exploits the possibility of manipulating single quantum objects and of measuring external physical quantities with unprecedented accuracy. It offers new functionalities that cannot be obtained with classical means. Quantum sensors can be based on atomic vapours, cold atoms, dopants in solid-state materials, etc. In the latter category, the nitrogen vacancy centre in diamond has received particular attention in recent years due to its very attractive characteristics.


Author(s):  
B. Elavarasan ◽  
G. Muhiuddin ◽  
K. Porselvi ◽  
Y. B. Jun

AbstractHuman endeavours span a wide spectrum of activities which includes solving fascinating problems in the realms of engineering, arts, sciences, medical sciences, social sciences, economics and environment. To solve these problems, classical mathematics methods are insufficient. The real-world problems involve many uncertainties making them difficult to solve by classical means. The researchers world over have established new mathematical theories such as fuzzy set theory and rough set theory in order to model the uncertainties that appear in various fields mentioned above. In the recent days, soft set theory has been developed which offers a novel way of solving real world issues as the issue of setting the membership function does not arise. This comes handy in solving numerous problems and many advancements are being made now-a-days. Jun introduced hybrid structure utilizing the ideas of a fuzzy set and a soft set. It is to be noted that hybrid structures are a speculation of soft set and fuzzy set. In the present work, the notion of hybrid ideals of a near-ring is introduced. Significant work has been carried out to investigate a portion of their significant properties. These notions are characterized and their relations are established furthermore. For a hybrid left (resp., right) ideal, different left (resp., right) ideal structures of near-rings are constructed. Efforts have been undertaken to display the relations between the hybrid product and hybrid intersection. Finally, results based on homomorphic hybrid preimage of a hybrid left (resp., right) ideals are proved.


2020 ◽  
Vol 51 (1) ◽  
pp. 87-91
Author(s):  
Milivoje Urošević ◽  
Ersoy Nilda ◽  
Petar Stojić ◽  
Darko Drobnjak

Organic farming, as an ecologically acceptable production method based on natural processes and the use of organic and natural materials, is becoming increasingly popular in Serbia. In addition to “organic”, this type of production is also commonly called “ecological” or “biological”. The objectives of organic agriculture are to maintain and increase fertility of the land, suppress land erosion, conserve biodiversity, protect natural resources from pollution and produce foods of high nutritional value. In organizing organic livestock production, priority is given to native (indigenous) breeds adapted to local growing conditions and resistant to diseases. Organic production, which is an integral part of the sustainable agriculture system, does not permit the use of protective and nutraceuticals of synthetic chemical origin and synthetic drugs, growth regulators, hormones and GMOs. Despite the common, classical means of goat farming, in recent years there has been increasing interest to change typical farming methods to introduce “Bio” systems, i.e. biologically clean farming methods. Such production methods result in products free of the chemicals that are common in numerous substances used in common production methods. Animal welfare is always a high priority in organic production. Primarily, animals should be provided with conditions for growth and development that are in compliance with their genetic potential. This implies respecting their physiological and ecological needs, and ensuring conditions to express their natural functions and behaviour. In order to start and later organize such production, certain conditions must be met. The appropriate, accredited institutions are responsible for ensuring that the required conditions are met and that production is in line with the principles of biological production. Holdings meeting the requirements of biological production receive the appropriate certificate. Today organic production in the EU is regulated by the EEC Directive 2092/91, and its amendments.


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