Wyniki wyszukiwania - Biblioteka Nauki

1

World trends in cyclotron developments for nuclear physics and applications

100%

Baron E.

Nukleonika

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2003

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tom Vol. 48,suppl.2

3-11

EN

Today, the number of cyclotrons operating in the world largely exceeds 200. The field of uses covers production of radioisotopes for medicine, therapy by neutron and ion beams, nuclear, atomic and solid state physics research, material analysis and radiation damage studies, and production of intense neutron beams for present and future purposes. Despite this diversity, continuing efforts driven by both research laboratories as well as commercial firms result in a series of improvements in the various techniques used in the design and operation of cyclotrons. This paper intends to draw the main directions of evolution in the following issues: injection and extraction systems, beam dynamics (including high intensity issues), magnetic and electric fields computation, as well as existing and possible future applications in medicine, production of energy, neutron spallation sources and transmutation technologies. The question of a possible resurrection of FFAG (Fixed-Field, Alternating Gradient) cyclotrons, a concept invented in the fifties, will be shortly brought up.

2

Application of the Haar wavelet method for solution the problems of mathematical calculus

100%

Lepik Ü. , Hein H.

Waves, Wavelets and Fractals

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2015

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tom 1

|

nr 1

EN

In recent times the wavelet methods have obtained a great popularity for solving differential and integral equations. From different wavelet families we consider here the Haar wavelets. Since the Haar wavelets are mathematically most simple to be compared with other wavelets, then interest to them is rapidly increasing and there is a great number of papers,where thesewavelets are used tor solving problems of calculus. An overview of such works can be found in the survey paper by Hariharan and Kannan [1] and also in the text-book by Lepik and Hein [2]. The aim of the present paper is more narrow: we want to popularize our method of solution, which is published in 19 papers and presented in the text-book [2]. This method is quite universal, since a large group of problems can be solved by a unit approach. The paper is organised as follows. In Section 1 fundamentals of the wavelet method are described. In Section 2 the Haar wavelet method and solution algorithms are presented. In Sections 3-9 different problems of calculus and structural mechanics are solved. In Section 10 the advantageous features of the Haar wavelet method are summed up.

3

Application of the Haar wavelet method for solution the problems of mathematical calculus

100%

Lepik Ü. , Hein H.

Waves, Wavelets and Fractals

|

2015

|

tom 1

|

nr 1

EN

In recent times the wavelet methods have obtained a great popularity for solving differential and integral equations. From different wavelet families we consider here the Haar wavelets. Since the Haar wavelets are mathematically most simple to be compared with other wavelets, then interest to them is rapidly increasing and there is a great number of papers,where thesewavelets are used tor solving problems of calculus. An overview of such works can be found in the survey paper by Hariharan and Kannan [1] and also in the text-book by Lepik and Hein [2]. The aim of the present paper is more narrow: we want to popularize our method of solution, which is published in 19 papers and presented in the text-book [2]. This method is quite universal, since a large group of problems can be solved by a unit approach. The paper is organised as follows. In Section 1 fundamentals of the wavelet method are described. In Section 2 the Haar wavelet method and solution algorithms are presented. In Sections 3-9 different problems of calculus and structural mechanics are solved. In Section 10 the advantageous features of the Haar wavelet method are summed up.

4

Jubileusz 100-lecia odkrycia nadprzewodnictwa

80%

Sosnowski J.

Wiadomości Elektrotechniczne

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2011

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tom R. 79, nr 7

45-48

PL

Zaprezentowano historię odkryć i wykorzystania nadprzewodnictwa w budowie urządzeń.

EN

The paper presents the history of discovery and application of superconductivity in construction of equipment.

5

Memristors : a Short Review on Fundamentals, Structures, Materials and Applications

80%

Domaradzki J. , Wojcieszak D. , Kotwica T. , Mańkowska E.

International Journal of Electronics and Telecommunications

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2020

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tom Vol. 66, No. 2

373--381

EN

The paper contains a short literature review on the subject of special type of thin film structures with resistive-switching memory effect. In the literature, such structures are commonly labeled as "memristors". The word "memristor" originates from two words: "memory" and "resistor". For the first time, the memristor was theoretically described in 1971 by Leon Chua as the 4th fundamental passive electronics element with a non-linear current-voltage behavior. The reported area of potential usage of memristor is enormous. It is predicted that the memristor could find application, for example in the domain of nonvolatile random access memory, flash memory, neuromorphic systems and so forth. However, in spite of the fact that plenty of papers have been published in the subject literature to date, the memristor still behaves as a "mysterious" electronic element. It seems that, one of the important reasons that such structures are not yet in practical use, is unsufficient knowledge of physical phenomena determining occurrence of the switching effect. The present paper contains a literature review of available descriptions of theoretical basis of the memristor structures, used materials, structure configurations and discussion about future prospects and limitations.

6

Mapping and Visualization of a Research Network: Case Study

80%

SMYRNOVA-TRYBULSKA E. , MORZE N. , KUZMINSKA O.

Edukacja-Technika-Informatyka

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2018

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tom 9

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nr 1

327-332

EN

The article focuses on trends and methods as well as tools used for mapping and visualization of scientific domains as a research methodology which is attracting more and more interest from scientific information and science studies professionals; several factors which have contributed to such developments are also discussed. Science mapping or bibliometric mapping is a spatial repre-sentation of how disciplines, fields, specialties, and individual documents or authors are related to one another (Small, 1999). Different approaches have been developed to extract networks using the selected units of analysis (authors, documents, journals, terms, etc.). Furthermore, the authors looks at the most popular computer programs used for the processing of bibliographic and biblio-metric data.. In addition, plans and activities are presented concerning a comprehensive analysis of IRNet project (www.irnet.us.edu.pl) networking activities and numerous publications, using spe-cial ICT tools and study methods, first of all Pajek and presenting a several examples.

7

Infrared detector arrays in the detection, automation and robotics - trends and development perspectives

80%

Pręgowski P.

Measurement Automation Monitoring

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2018

|

tom Vol. 64, No. 4

82--89

EN

Already in the 1970s, it was predicted that the scale of thermal imaging applications would be limited only by the imagination. It happened thanks to the elaboration of solid-state, Focal Plane Arrays of IR detectors (IR FPA) connected with electronics readouts (ROIC CCD). In the last 20 years, thanks to the appearance of uncooled detectors, and recently also photon detectors in the high operation temperature versions, cameras have become significantly smaller, lower weight, consume lower power and are cheaper. It made them more attractive for civil applications, with optimal adaptation to very different tasks. The aim of this study is to present a brief review of the specifics of non-pure-thermographic markets for these IR detectors. The growing interest of many markets, with more affordable prices of better and better detectors, and the available knowledge base, create good conditions for innovative projects and business programs.

8

Zabezpieczenie łukoochronne - praktyczne aplikacje

80%

Rodoń F. , Figlus Ł.

Wiadomości Elektrotechniczne

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2010

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tom R. 78, nr 9

60-63

PL

Omówiono najnowsze aplikacje zabezpieczeń łukoochronnych na nowo budowanym bloku w Elektrowni Bełchatów oraz inne rozwiązania zastosowane w energetyce zawodowej.

EN

The paper discusses the newest applications of arc protection equipment at new power unit of Bełchatów power station, as well as other solutions applied in power industry.

9

Determination of Moving Chord Length for Determining the Curvature of In-Service Railway Track

80%

Koc W.

Problemy Kolejnictwa

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2022

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tom Z. 197

147--160

EN

The paper deals with the still unexplained issue of the choice of chord length, which will be the most benefi cial when determining the horizontal curvature of railway track with the use of the moving chord method. In the railway track – with an incorrect choice of the chord length – the horizontal track deformations and coordinate measurement error may cause irregular curvature diagrams, which will be difficult to interpret. The study analysed three test geometric layouts adapted to the speeds of 80 km/h, 120 km/h and 160 km/h (the radii of circular curves determined as a result of the curvature estimation performed were approximately 410 m, 880 m and 1480 m, respectively). The lengths of the moving chord in the range of 10÷50 m were considered. On the basis of the conducted analysis, it was unequivocally demonstrated that the chord length used to determine the curvature in the railway track should depend on the value of the radius of the circular curve. Approximate lengths lc were proposed depending on the range of the RCA radius. The adaptation of the moving chord method to the adopted measurement procedure presented in this paper and the way of using the obtained curvature diagram, provide the appropriate application basics.

10

Walking machines: investigation-design-applications

80%

Morecki A.

Prace Naukowe Instytutu Cybernetyki Technicznej Politechniki Wrocławskiej. Konferencje

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1998

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tom Vol. 98, nr 44

9-18

EN

Multi-legged walking robots, old walking machines, old Chinese machine, contemporary four-legged machines, are given. Six-legged walking machines as well as description of selected machines are discussed. At the end, six-legged mili-walking robot HERMES and some experimental results are given.

11

Empowering the mobile worker by wearable computing - wearIT@work

80%

Boronowsky M. , Herzog O. , Knackfuß P. , Lawo M.

Journal of Telecommunications and Information Technology

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2006

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tom nr 2

9-14

EN

Currently wearable computing is still a technology of niches and in a laboratory stage. With wearIT@work a project dedicated to applications was launched by the European Commission (EC IP 004216). The first year of the project is nearly over and first results were achieved. In this paper the concept of the project is introduced and first results are presented. As the project strongly follows a user centred design approach much effort was put on first investigations with users in the four application domains of maintenance, production, hospital and fire fighting. Beside this results concerning a wearable computing hardware platform and software framework were achieved.

12

Preface to special issue on recent advances in machine learning and its applications

80%

Kowalski P. A. , Łukasik S. , Kulczycki P.

Journal of Automation Mobile Robotics and Intelligent Systems

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2020

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tom Vol. 14, No. 2

30--31

13

Theory of cumulative fuel consumption by LPG powered cars

80%

Sitnik L. J.

Journal of KONES

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2015

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tom Vol. 22, No. 4

275--280

EN

Theory of cumulative fuel consumption is shown for the first time in [1] and [2]. The theory of cumulative fuel consumption has been presented also in this work. The example of LPG car research results have shown the way of getting to mathematical model of cumulative fuel consumption and the intensity of cumulative fuel consumption. In this case, the studies were carried out 16 cars whose engines were powered by LPG. The vehicles are operated in a small fleet of vehicles, which run in city traffic. Data on outcomes of exploitation and operation fuel consumption is acquired from the accounting documents of the company. Very good results prediction mathematical model of operational data are obtained. The high value of prescience quotients (in this case R-sq > 9.999) are similar to the values that were obtained in various other cases. Conversance of mathematical model of cumulative fuel consumption allows carrying out comprehensive analysis of this significant exploitative parameter. The presented theory must not only be regarded as a theory of cumulative fuel consumption but also can be seen more broadly as a theory of cumulative energy consumption. Research is being conducted on the application of the theory to evaluate energy consumption by hybrid vehicles. The results can be very interesting.

14

Further open problems in cooperative games

80%

FRAGNELLI V. , GAMBARELLI G.

Operations Research and Decisions

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2014

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tom 24

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nr 4

51-62

EN

In 2013, the International Game Theory Review published two special issues on open problems in cooperative games: the first regarding theory and the second applications. In this paper, our aim is to present some problems currently “on our table” that were not included in the two issues mentioned above, either because the topics were too specific or they arose after publication. The problems are divided into theoretical problems, general models that may be applied to different fields and applicative problems.

15

Modern condition monitoring systems

80%

Zygmunt M. , Wnęk M. , Duda A. , Budyn M.

Studia Informatica

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2005

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tom Vol. 26, nr 2

69-79

EN

Machinery diagnostic systems have been strongly emerged in the latest years. With machinę technology development morę and morę measurement data became available via standard PC communication channels. Modern software systems evolve from closed and specialized for given application domain to easily configurable frameworks, allowing for data interchanging with other software via open standards. ABB TriglT may be an example of such system. It joins ABB knowledge from rotating machinery domain with modern data modeling approach. The system aJlows for combining in calculations measurement data coming from different sources, which enables for viewing the diagnostic problem at higher level, and for detecting dependencies and faults that were difficult to locate previously

PL

Systemy diagnostyki maszyn przeżywały w ostatnich latach rewolucyjne zmiany. Wraz z rozwojem technologu samych maszyn (jak np. napędy DCT) coraz więcej danych pomiarowych jest dostępnych za pomocą standardowych mechanizmów komunikacji komputerów PC. Systemy informatyczne przekształcają się z rozwiązań zamkniętych i specjalizowanych dla danej dziedziny w łatwo konfigurowalne platformy, pozwalające na wymianę danych z innymi aplikacjami za pomocą otwartych standardów. Przykładem takiego systemu, łączącego w sobie wiedzę ABB z dziedziny diagnostyki maszyn wirujących oraz nowoczesne podejście do modelowania danych, może być TriglT. Pozwala on na kojarzenie w obliczeniach różnych danych pomiarowych, dotyczących danego obiektu, co umożliwia spojrzenie na problem diagnostyki kompleksowo - i wykrywanie zależnos'ci i defektów wczes'niej trudnych do zlokalizowania.

16

Nanoparticles, Synthesis Methods and Applications - A Simple Review

80%

Nwakanma U. G. , Elemike E. E.

World News of Natural Sciences

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2023

|

tom 47

48-60

EN

Nanotechnology has gained so much interest in today’s world. It is known to be the science of nanoscales which is less than 100 nanometre in size. This technology has been employed for different applications due to its eco-friendly and sustainable ability in the various fields of applications. Recently, nanotechnology is used in bio sensing, drug delivery, nano devices, separation and purification purposes. These nanoparticles which are used in the building blocks of many materials, and the synthesis methods vary for all due to their physical and chemical properties. This study attempts to review the field of nanotechnology, synthesis of nanoparticles, the properties of nanoparticles, the advantages and disadvantages of different methods and their applications.

17

The International Conference on Development and Applications of Nuclear Technologies, NUTECH-2020, Warsaw, Poland, 4–7 October 2020

80%

Chmielewska-Śmietanko D. , Gryczka U.

Nukleonika

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2021

|

tom Vol. 66, No. 4

113--114

18

Applications of Algebra in Logic and Computer Science – the Past and the Future

80%

Grygiel J.

Bulletin of the Section of Logic

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2018

|

tom 47

|

nr 1

EN

We present the history of the conference Applications of Algebra in Logic and Computer Science, whose twenty-third edition will be held in March, 2019. At the end we outline some plans for the future.

19

Material investigations of composites and their selected applications in motor transport

80%

Rudnik D. , Pietrzak K. , Wojciechowski A. , Sobczak J. , Kowalewski Z. L.

Journal of KONES

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2008

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tom Vol. 15, No. 2

399-407

EN

The paper presents advances in the range of brake discs and engine pistons production using metal matrix composites and identifies their advantages in comparison to materials traditionally applied. The wear characteristics in the case of brake discs and thermal shock resistance in the case of pistons were determined. The wear was assessed by measurements of friction coefficients in different temperatures. The thermal shock resistance was described as the crack length formed during the tests. The image analysis was used in the quantitative microstructure assessments for determination of synthetic geometrical parameter correlated with composites properties. The two synthetic geometrical variables have been proposed in the microstructure description of a new generation brake discs and pistons. The selected relationships between functional properties and composite microstructure are presented. It was shown that a life of brake discs made from A359 aluminum alloy reinforced by SiC precipitates is much longer in comparison to traditional, made from cast iron. It was ascertained also that the best thermal shock resistance was obtained in the case of AK12 composite with Al2O3 short fibers in cast heat treated. The results may be treated as the base for the recommendations of tested metal matrix composites for applicability in selected vehicle parts and subsets producing.

20

Review of Nano-thermites: a Pathway to Enhanced Energetic Materials

80%

Zaky M. G. , Elbeih A. , Elshenawy T.

Central European Journal of Energetic Materials

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2021

|

tom Vol. 18, no. 1

63--85

EN

Nano-thermites or metastable intermolecular composites (MICs) have been implemented into modern research on energetic materials as they offer much higher energy densities, higher rates of energy release, stability, and safety (lower sensitivity). This paper reviews several synthetic methods for MICs that have been well thought-out for energetic applications, advantages and disadvantages, as well as the characteristics of each manufacturing technique. The techniques presented include powder mixing, sol-gel, synthesis of MICs based on nano-porous silicon (Psi), sputtering, multilayer nano-foils and electrolytically plated carbon nano-materials for nano-thermite applications. These techniques offer enormously different characteristics and, through the variation of various chemical techniques and conditions, a wide range of chemical and energetic properties may be attained. This may give the opportunity for the safe use of MICs as replacements for some conventional energetic materials in various applications, and may also enable us to study the effects when incorporating these MICs into energetic matrixes, as a promising and feasible research field.