Temat: multiplication - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Realizacja w układach FPGA mnożenia Montgomery dla akceleracji operacji kryptograficznych
Implementation of Montgomery multiplication for cryptographic algorithm acceleration in FPGA
Autorzy:: Janiszewski, M.
Russek, P.
Wiatr, K.
Powiązania:: https://bibliotekanauki.pl/articles/156268.pdf
Data publikacji:: 2008
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: mnożenie Montgomery
mnożenie modulo
FPGA
RSA
Montgomery multiplication
modular multiplication
Opis:: W niniejszej pracy podjęto temat realizacji modułu sprzętowego, mogącego skutecznie przyspieszyć programowe realizacje operacji kryptograficznych. Rozpatrywanym algorytmem jest szyfrowanie asymetryczne RSA. Moduł został zaimplementowany w układzie firmy Xilinx - Virtex 4 LX200. Prędkość działania modułu została porównana z najpopularniejszymi rozwiązaniami programowymi. Rezultaty pokazują, że rozwiązania bazujące na układach rekonfigurowanych mogą konkurować z implementacjami opartymi na procesorach ogólnego przeznaczenia (GPP).
Modular exponentiation is a key operation for RSA cryptographic algorithm. There are many algorithms for computing modular exponentiation - equation 1. The most basic are right to left and left to right binary algorithms. For key length k=1024 bits, 1024 modular squarings and 512 modular multiplications on average must be performed. There are many optimization which allows to minimize the number of multiplications, however they are more suited for software implementations. Therefore key factor for faster modular exponentiation is fast multiplier module. This work presents example implementation of modulo multiplier using Montgomery multiplication algorithm [1]. Montgomery multiplication is the most efficient algorithm when large number of multiplications must be performed with respect to the same modulus n. Our results show that timings comparable with modern processors can be achieved - table 2. This works also presents optimizations of proposed module, which allow greater speedup and application of FPGA bas
Źródło:: Pomiary Automatyka Kontrola; 2008, R. 54, nr 8, 8; 550-552
0032-4140
Pojawia się w:: Pomiary Automatyka Kontrola
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Cardinal Squaring Principle and an Alternative Axiomatization of NFU
Autorzy:: Adlešić, Tin
Čačić, Vedran
Powiązania:: https://bibliotekanauki.pl/articles/43182311.pdf
Data publikacji:: 2023
Wydawca:: Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:: Quine's New Foundations
cardinal multiplication
axiomatization
Opis:: In this paper, we rigorously prove the existence of type-level ordered pairs in Quine’s New Foundations with atoms, augmented by the axiom of infinity and the axiom of choice (NFU + Inf + AC). The proof uses the cardinal squaring principle; more precisely, its instance for the (infinite) universe (VCSP), which is a theorem of NFU + Inf + AC. Therefore, we have a justification for proposing a new axiomatic extension of NFU, in order to obtain type-level ordered pairs almost from the beginning. This axiomatic extension is NFU + Inf + AC + VCSP, which is equivalent to NFU + Inf + AC, but easier to reason about.
Źródło:: Bulletin of the Section of Logic; 2023, 52, 4; 551-581
0138-0680
2449-836X
Pojawia się w:: Bulletin of the Section of Logic
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Antimicrobial Activity and Micropropagation of Some Rare and Endangered Plants of Jordan
Autorzy:: Shatnawi, Mohamad
Abubaker, Samih
Odat, Nidal
Al-Tawaha, Abdel Rahman
Majdalawi, Majdi
Powiązania:: https://bibliotekanauki.pl/articles/1838372.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: medicinal plant
microbial activity
multiplication
root formation
Opis:: The medicinal plants of Jordan are under threat due to several factors of habitat perturbation. Some of these factors include ruinous over-harvesting, climate change, competition and invasion. In this study, the authors employed a reliable method for micropropagation and assessment of antimicrobial activity of some important medicinal plants of Jordan. Seeds were surface sterilized and germinated on agar water media, and then shoots were cultured on Murashige and Skoog (MS) medium with the addition of 3% sucrose. In order to generate enough plant material, microshoots were transferred after fourteen days onto hormone free MS medium. Among all studied plants, it was found that the Achellia millefolium and Moring perigrina plants successfully multiplied in vitro containing different 6-benzyl amino purine (BA). For potential antimicrobial activity, the ex vitro (field leaf plants) and in vitro (plantlet) extracts were evaluated against some bacteria strains using ethanolic extracts. Both ex vitro and in vitro plants extracts showed the antimicrobial activity against the microorganism tested. The results from the study suggest that these two plants showed good antimicrobial activity against the different tested bacteria.
Źródło:: Journal of Ecological Engineering; 2021, 22, 6; 151-158
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: On the Judicialisation of International Law
Autorzy:: Wiśniewski, Adam
Powiązania:: https://bibliotekanauki.pl/articles/684981.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: public international law
jucicialisation
multiplication of international courts
Opis:: The judicialisation of international law is a relatively recent phenomenon that gained momentum in the 1990s and 2000s. Coupled with the trend towards widespread compulsory jurisdiction, it has been crucial in strengthening the commitment of states to adhere to their international obligations. Another important effect of judicialisation on international law is that at least certain international norms have acquired an “objective” nature, detached from the will of states. This is because the interpretation and application of these norms is no longer dependent solely upon the subjective discretion of states, but is subject to consideration and examination by independent judicial bodies. The process of judicialisation, while contributing to the international rule of law, has undoubtedly changed the face of international law a great deal as a result of some other factors. The multiplication of international courts has led to the expansion of the judicial institutional layer, making international law less horizontal. Also, as a result of the growing case-law of these courts, the system of international law is becoming more complex and developed, and thus also more mature. The natural aspect of the judicial function is the development of international law. Despite the problems and risks involved, the proliferation of international courts and tribunals can be perceived as one of the important components of the dynamic transformation of international law during the recent decades.
Źródło:: Adam Mickiewicz University Law Review; 2017, 7; 37-53
2450-0976
Pojawia się w:: Adam Mickiewicz University Law Review
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Static Characteristics of Air Gauges Applied in the Roundness Assessment
Autorzy:: Jermak, C. J.
Rucki, M.
Powiązania:: https://bibliotekanauki.pl/articles/220421.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: air gauges
out-of-roundness
static characteristics
multiplication
Opis:: In the article, analysis of the work conditions and the metrological characteristics of the air gauges dedicated for the roundness assessment is described. To reach the required accuracy of the acquired data, the phenomena of gas dynamics had to be analyzed in the whole flow through elements of the air gauge. A model based on the second critical parameters was used, because it reflects the true processes of the air flow. As a result, fast and accurate simulations provided series of the characteristics to be considered. Nevertheless, the chosen air gauge configuration underwent the experimental verification of its metrological characteristics. Finally, the entire measurement system Geoform with the gauge head based on the chosen air gauges underwent the accuracy test in order to make sure of its overall measurement quality.
Źródło:: Metrology and Measurement Systems; 2016, 23, 1; 85-96
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: SPAD timing jitter modeling using Fourier series
Autorzy:: Eyvazi, Kaveh
Karami, Mohammad Azim
Powiązania:: https://bibliotekanauki.pl/articles/27310093.pdf
Data publikacji:: 2023
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: analytical model
Fourier series
multiplication time
timing jitter
Opis:: In this paper, a simple analytical model for the Gaussian’s peak response part of the timing jitter of single photon avalanche diodes (SPADs) is proposed using Fourier series in the multiplication time calculation. The multiplication time characterizes avalanche multiplication process speed in which low multiplication time suggests a swifter response time and a higher avalanche speed. This paper presents an analytical solution which results in a more accurate multiplication time. The model is verified for SPADs implemented in 0.15 and 0.18 μm standard CMOS process, and the accuracy of the proposed analytical method in full-width at half-maximum (FWHM) calculation is improved by 25% and 5% with respect to the numerical model, respectively.
Źródło:: Optica Applicata; 2023, 53, 2; 239--248
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: On Unconventional Division by Zero
Autorzy:: Czajko, Jakub
Powiązania:: https://bibliotekanauki.pl/articles/1177806.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Unconventional division by zero
multispatial algebraic multiplication
Opis:: Unconventional division by zero can apply to those cases in which some directly incomparable (i.e. unlike or represented in different algebraic bases) abstract objects taken from two distinct algebraic spaces are acted upon or need to be compared. Multispatial reality paradigm is thus necessary for overcoming conceptual inconsistencies arising in the domain of complex numbers when certain valid abstract reasonings from the hypercomplex domains of quaternions and octonions are carried over back to the 2D complex domain.
Źródło:: World Scientific News; 2018, 99; 133-147
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Antimicrobial Activity and Micropropagation of Some Rare and Endangered Plants of Jordan
Autorzy:: Shatnawi, Mohamad
Abubaker, Samih
Odat, Nidal
Al-Tawaha, Abdel Rahman
Majdalawi, Majdi
Powiązania:: https://bibliotekanauki.pl/articles/1838285.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: medicinal plant
microbial activity
multiplication
root formation
Opis:: The medicinal plants of Jordan are under threat due to several factors of habitat perturbation. Some of these factors include ruinous over-harvesting, climate change, competition and invasion. In this study, the authors employed a reliable method for micropropagation and assessment of antimicrobial activity of some important medicinal plants of Jordan. Seeds were surface sterilized and germinated on agar water media, and then shoots were cultured on Murashige and Skoog (MS) medium with the addition of 3% sucrose. In order to generate enough plant material, microshoots were transferred after fourteen days onto hormone free MS medium. Among all studied plants, it was found that the Achellia millefolium and Moring perigrina plants successfully multiplied in vitro containing different 6-benzyl amino purine (BA). For potential antimicrobial activity, the ex vitro (field leaf plants) and in vitro (plantlet) extracts were evaluated against some bacteria strains using ethanolic extracts. Both ex vitro and in vitro plants extracts showed the antimicrobial activity against the microorganism tested. The results from the study suggest that these two plants showed good antimicrobial activity against the different tested bacteria.
Źródło:: Journal of Ecological Engineering; 2021, 22, 6; 151-158
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Współczynnik krotności łożysk wieńcowych podwójnych
Multiplication factor of double-row ball slewing bhearings
Autorzy:: Kania, L.
Śpiewak, S.
Powiązania:: https://bibliotekanauki.pl/articles/387411.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: łożysko wieńcowe
nośność statyczna
współczynnik krotności
multiplication factor
bearing
Opis:: W artykule zaprezentowano zagadnienie współczynnika krotności łożysk wieńcowych podwójnych. Współczynnik ten jest używany do analitycznego wyznaczania charakterystyk nośności statycznej łożysk wieńcowych podwójnych w oparciu o charakterystyki łożysk wieńcowych jednorzędowych o podobnych parametrach. Wyznaczono charakterystyki nośności statycznej modelowanych łożysk i określono dla nich wartości współczynnika krotności. Przytoczone wyniki obliczeń uzyskano na drodze numerycznej.
A problem of multiplication factor of double row ball slewing bearings have been presented in this article. This factor is used for the determination of analytical profile of the static load capacity of slewing bearing with double-row ball based on the profile of slewing bearing with single-row ball with similar parameters. The profile of the static load capacity of modeling bearings and the value of multiplication factor has been determinate. Concluding results have been obtained in numerical way.
Źródło:: Acta Mechanica et Automatica; 2009, 3, 1; 65-67
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Quaternionic operational infinity
Autorzy:: Czajko, Jakub
Powiązania:: https://bibliotekanauki.pl/articles/1031022.pdf
Data publikacji:: 2020
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Quaternionic descending infinity
division by zero
multiplication by infinity
Opis:: By analogy to the complex analytic representation of infinity that I have already proposed in my prior paper, it is demonstrated here by examples that a hypercomplex representation of infinity can also be conjectured and formulated in a formwise similar way. Unlike the two-dimensional (2D) complex infinity, which holds in 2D spaces equipped with an orthogonal homogeneous algebraic basis, the 4D quaternionic infinity requires an algebraic or quasigeometric basis that would be either heterogenous if established within a single space or, if it would be established upon a quasigeometric multispatial structure then at least two homogeneous bases are needed for the latter structure. In the latter case orthogonality and isometry are preserved. The multispatiality not only conforms to the experimentally confirmed reality of the quantum Cheshire Cat whose grin was located in a separate beam path from the beam path of the cat but also implies the feasibility of prospective mathematical reformulation of the basically complex (and thus essentially 2D) quantum mechanics in terms of certain hypercomplex 4D quasispatial structures under auspices of the multispatial reality paradigm.
Źródło:: World Scientific News; 2020, 149; 23-35
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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