Effect of disorder on the NMR relaxation rate in two-band superconductors

We calculate the effect of nonmagnetic impurity scattering on the spin-lattice relaxation rate in two-band superconductors with the s-wave pairing symmetry. It is found that for the interaction parameters appropriate for MgB2 the Hebel-Slichter peak is suppressed by disorder in the limit of small interband impurity scattering rate. In the limit of strong impurity scattering, when the gap functions in the two bands become nearly equal, the single-band behavior is recovered with a well-defined coherence peak just below the transition temperature.Comment: 6 pages, 4 figure

On an extension of a bilinear functional on Lp(Rd)⊗E to a Bochner space with an application to velocity averaging

We examine necessary and sufficient conditions under which a continuous bilinear functional B on Lp(Rd)⊗E, p>1, E being a separable Banach space, can be continuously extended to a linear functional on Lp(Rd;E). The extension enables a generalisation of the H-distribution concept, allowing us to obtain a (heterogeneous) velocity averaging result in the Lp framework for any p>1

A FIXED POINT THEOREM FOR F-CONTRACTION MAPPINGS IN PARTIALLY ORDERED BANACH SPACES

In this paper, we first introduce a new notion of an F-contraction mapping, also we establish a fixed point theorem for such mappings in partially ordered Banach spaces. Moreover, two examples are represented to show the compatibility of our results

Industry 4.0 - renaissance of engineering first edition

The main purpose of this Monograph is to provide students, engineers and researchers with the latest knowledge about Industry 4.0 from the following aspects: (a) what Industry 4.0 is and how it came about, what it is and what the National Industry 4.0 Programs cover. What is the National Program of Serbia for this model, (b) what are its basic elements and how do they work in this model, (c) what engineering knowledge is needed for this concept, and what is our research in this area, (d) what this model means for other industries and how to apply it, and (e) what is the vision of this model in the next decade, until 2030, and in which direction this model will develop. The authors has been intensively involved in this field since 2015, so this Monograph presents a systematization of their knowledge of Industry 4.0 from the following aspects: (a) prepared and held five International Conferences on Industry 4.0 at the Faculty of Mechanical Engineering in Belgrade, thousand participants from the country and the world, (b) held 35 Panels on Industry 4.0 in our country, (c) published 42 papers at international conferences, domestic and foreign journals, or chapters in domestic and foreign monographs, (e) held more than 20 invited lectures in the country and the world on the topic of Industry 4.0, and (f) realized dozens of projects for domestic factories, through research tasks related to business organization and preparation for the application of elements of Industry 4.0 in their environment

Industry 4.0 - renaissance of engineering first edition

The main purpose of this Monograph is to provide students, engineers and researchers with the latest knowledge about Industry 4.0 from the following aspects: (a) what Industry 4.0 is and how it came about, what it is and what the National Industry 4.0 Programs cover. What is the National Program of Serbia for this model, (b) what are its basic elements and how do they work in this model, (c) what engineering knowledge is needed for this concept, and what is our research in this area, (d) what this model means for other industries and how to apply it, and (e) what is the vision of this model in the next decade, until 2030, and in which direction this model will develop. The authors has been intensively involved in this field since 2015, so this Monograph presents a systematization of their knowledge of Industry 4.0 from the following aspects: (a) prepared and held five International Conferences on Industry 4.0 at the Faculty of Mechanical Engineering in Belgrade, thousand participants from the country and the world, (b) held 35 Panels on Industry 4.0 in our country, (c) published 42 papers at international conferences, domestic and foreign journals, or chapters in domestic and foreign monographs, (e) held more than 20 invited lectures in the country and the world on the topic of Industry 4.0, and (f) realized dozens of projects for domestic factories, through research tasks related to business organization and preparation for the application of elements of Industry 4.0 in their environment

The Results on Coincidence and Common Fixed Points for a New Type Multivalued Mappings in b-Metric Spaces

In this paper, we obtain the results of coincidence and common fixed points in b-metric spaces. We work with a new type of multivalued quasi-contractive mapping with nonlinear comparison functions. Our results generalize and improve several recent results. Additionally, we give an application of the obtained results to dynamical systems

Industry 4.0 in Serbia: State of development

Novi model automatizacije tehnoloških sistema, zasnovan na Internetu, definisan je kao koncept industrije 4.0, Nemačka 2011. godine. Predstavlja napredni model povezivanja mašina i računara (eng. cyber-physical systems - CPS), njihovog umrežavanja (eng. cloud computing and Internet of Things (IoT)) sa široko rasprostranjenom upotrebom napredne veštačke inteligencije (eng. artificial intelligence (AI)) u ovom konceptu. Ovaj koncept je model pametne proizvodnje (eng. smart manufacturing (SM)), a danas govorimo o: pametnim vozilima, pametnim autoputevima, pametnim mrežama, pametnim gradovima, pametnim uslugama itd... - ukratko, inteligentno "sve i svašta" (pametno sve). Najvažniji pravci za Srbiju u primeni industrije 4.0 su: industrijska politika za industriju 4.0, obrazovanje za industriju 4.0 (visoko/srednje obrazovanje), istraživanje za industriju 4.0, a posebno primenjena istraživanja i spremnost MSP za industriju 4.0, kao i primena ovog modela u praksi. Ovaj rad predstavlja razvoj i primenu modela industrije 4.0 u Srbiji, kroz delatnost Mašinskog fakulteta u Beogradu, od 2015. godine do danas, sa posebnim osvrtom na primenu industrije 4.0 u rudarstvu.A new model of automation of technological systems, based on the Internet, was defined as the concept of Industry 4.0, Germany in 2011. It represents an advanced model of connecting machines and computers (cyber-physical systems - CPS), their networking (cloud computing and Internet of Things (IoT)) with the widespread use of advanced artificial intelligence (AI) in this concept. This concept is a model of smart manufacturing (SM), and today we are talking about: smart vehicles, smart highways, smart grids, smart cities, smart services, etc ... - in short, intelligent "everything and anything" (smart everything). The most important directions for Serbia in the application of Industry 4.0 include: industrial policy for Industry 4.0, education for Industry 4.0 (higher / secondary education), research for Industry 4.0, and especially applied research and readiness of SMEs for Industry 4.0, as well as the application of this model in practice. This paper presents the development and application of the Industry 4.0 model in Serbia, through the activities of the Faculty of Mechanical Engineering in Belgrade, from 2015 until today, with special reference to the application of Industry 4.0 in mining

Early flowering species - model plants for studies of ontogenesis in vitro

Chenopodium rubrum L. and Chenopodium murale L. are two annual weed species with different photoperiodic demands. The use of species from the same genus, with a similar type of morphogenesis but with different photoperiodic demands, is valuable for comparative studies of flowering. In addition, being classified as early flowering species, these two species represent model plants suitable for studies of ontogenesis in vitro. This review describes part of our results obtained on these two model plants under the guidance of Professor Ljubinka Ćulafić, starting with early development, such as somatic embryogenesis, followed by photoperiodic and hormonal regulation of flowering, to the photoperiodic control of different stages of ontogenesis

Interdependence of fundamental and applied research in material science

Development of materials with desirable properties essentially depends on realization of interdependence: natural science ⇔ technical sciences. Taking this into account, in order to develop of new advanced materials it is essential to determine principles that characterize this interdependency. Therefore, in this article the principles of fundamental research and the importance of obtained results are considered and implemented in the field of technical realizations