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Tytuł:
Formulation of a sequencing problem in a mixed-model production system
Autorzy:
Krenczyk, D.
Zemczak, M.
Powiązania:
https://bibliotekanauki.pl/articles/100016.pdf
Data publikacji:
2012
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
sequencing
simulation
mixed-model production system
Opis:
In the paper the problem of production orders sequencing in a mixed-model production system is considered. The authors present the design of the system and production orders, manufactured in the system. Model of the system consists of an input buffer and an assembly line with a given number of stations. The system is presented in a simplified manner, which provides the ability to compare it (under certain assumptions) with a real system. A virtual model of the mixed-model production system has been created. The main objective is to verify the correct operation of the prepared simulation model and the possibility of generating of input data and acquisition of output data in a mixed-model production system. The question is whether such model can be used to simulate the operation of a mixed-model production system in a manner that represents the outcome of a real system.
Źródło:
Journal of Machine Engineering; 2012, 12, 3; 45-51
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pipelined scaling of signed residue numbers with the mixed-radix conversion in the programmable gate array
Autorzy:
Czyżak, M.
Smyk, R.
Ulman, Z.
Powiązania:
https://bibliotekanauki.pl/articles/377373.pdf
Data publikacji:
2013
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
scaling technique
Mixed-Radix System
MRS
Residue Number System
pipelining
Opis:
In this work a scaling technique of signed residue numbers is proposed. The method is based on conversion to the Mixed-Radix System(MRS) adapted for the FPGA implementation. The scaling factor is assumed to be a moduli product from the Residue Number System (RNS) base. Scaling is performed by scaling of terms of the mixed-radix expansion, generation of residue representations of scaled terms, binary addition of these representations and generation of residues for all moduli. The sign is detected on the basis of the value of the most significant coefficient of the MRS representation. For negative numbers their residues are adequately corrected. The basic blocks of the scaler are realized in the form of the modified two-operand modulo adders with included additional multiply and modulo reduction operations. The pipelined realization of the scaler in the Xilinx environment is shown and analyzed with respect to hardware amount and maximum pipelining frequency. The design is based on the LUTs(26x 1) that simulate small RAMs serving as the main component for the look-up realization.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2013, 76; 89-99
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Scaling of signed residue numbers with mixed-radix conversion in FPGA with extended scaling factor selection
Autorzy:
Smyk, R.
Czyżak, M.
Ulman, Z.
Powiązania:
https://bibliotekanauki.pl/articles/97226.pdf
Data publikacji:
2013
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
residue number system
RNS
scaling
scaling algorithms
mixed-radix system
MRS
FPGA
Opis:
A scaling technique of signed residue numbers in FPGA is proposed. The technique is based on conversion of residue numbers to the Mixed-Radix System (MRS). The scaling factor is assumed to be a moduli product from the Residue Number System (RNS) base. Scaling is performed by scaling of MRS terms, the subsequent generation of residue representations of scaled terms, binary addition of these representations and generation of residues for all moduli. The sign of the residue number is detected by using the most significant digit of the MRS representation. Basic blocks of the scaler are realized in the form of modified two-operand modulo adders with included additional multiply and modulo reduction operations. An exemplary pipelined realization of the scaler in the Xilinx FPGA environment is shown. The design is based on Look-Up Tables (LUT)(2,sup>6 x 1) that simulate small RAMs which serve as main components for the look-up realization. Also a method is shown that allows for flexible selection of scaling factors from a set of moduli products of the RNS base. This is made by forming auxiliary MRSs by permutation of moduli of the base. All formed MRSs are associated with the given RNS with respect to the base but each MRS has different set of weights. Thus for the required scaling factor, the suitable MRS can be chosen that provides for the scaling error smaller than 1.
Źródło:
Computer Applications in Electrical Engineering; 2013, 11; 465-477
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Scaling of numbers in residue arithmetic with the flexible selection of scaling factor
Autorzy:
Ulman, Z.
Czyżak, M.
Smyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/376813.pdf
Data publikacji:
2013
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
scaling technique
scaling factor
residue arithmetic
Residue Number System
RNS
Mixed-Radix System
MRS
Opis:
A scaling technique of numbers in residue arithmetic with the flexible selection of the scaling factor is presented. The required scaling factor can be selected from the set of moduli products of the Residue Number System (RNS) base. By permutation of moduli of the number system base it is possible to create many auxiliary Mixed-Radix Systems (MRS). They serve as the intermediate systems in the scaling process. All MRS's are associated with the given RNS with respect to the base, but they have different sets of weights. For the scaling factor value resulting from the requirements of the given signal processing algorithm, the suitable MRS can be chosen that allows to obtain the scaling result in most simple manner.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2013, 76; 175-179
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On real order passivity
Autorzy:
Gallegos, J. A.
Duarte-Mermoud, M. A.
Powiązania:
https://bibliotekanauki.pl/articles/200762.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
passivity
dissipativeness
adaptive
passivation
nonlinear mixed-order system
positive realness
control of nonlinear systems
pasywność
rozproszenie
adaptacja
pasywacja
Opis:
The aim of this paper is to show that a real order generalization of the dissipative concepts is a useful tool to determine the stability (in the Lyapunov and in the input-output sense) and to design control strategies not only for fractional order non-linear systems, but also for systems composed of integer and fractional order subsystems (mixed-order systems). In particular, the fractional control of integer order system (e.g. PI? control) can be formalized. The key point is that the gradations of dissipativeness, passivity and positive realness concepts are related among them. Passivating systems is used as a strategy to stabilize them, which is studied in the non-adaptive as well as in the adaptive case.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 3; 445-454
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nematogenic Mesophase Induced from Two Nonmesomorphs and Determination of LTT for Common Nonmesomorphic Component by Extrapolation
Autorzy:
Solanki, Ravindra
Patel, R. B.
Doshi, A. V.
Powiązania:
https://bibliotekanauki.pl/articles/1179586.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Binary System
Eutectic point
Mixed melt
Mixed mesomorphism
Nematic
Opis:
Three binary systems (A+B1, A+B2, A+B3) consisted of both admixed components as nonmesomorphs induces mesomorphic property as nematogenic mesophase within definite range of concentration of component - A. The Isotropic- Nematic (I-N) transition curves of each binary systems are extra polated to 100 mole percent of nonmesomorphic component –A to determine its reliable latent transition temperature (LTT) and to derive the group efficiency order. The common component A is a Schiff’s base, P-tolal. P’- Phenetidine (109 °C), uncommon component B1 and B2 are also Schiff’s bases p-Chloro benzal P’- chloroaniline (M.P 111.0 °C) and p-Anisal p’-Toluidine (M.P 92.0 °C) respectively, whereas, component B3 is a chalcone α- 4 methoxy phenyl β 4’-pentyloxy benzoyl ethylene (M.P 91.0 °C). The reliable predicted LTT of common component –A are 99.5 °C, 99.0 °C and 101.0 °C from binary systems A+B1 ,A+B2 and, A+B3 respectively. The group efficiency order derived is B2>B1>B3 from range of mesomorphism.The melting point of common and uncommon nonmesomorphic components are confirmed with previously reported values. Suitable magnitudes of anisotropic forces of intermolecular attractions as a consequence of resulted molecular rigidity and flexibility through respective polarity and polarizabilities of nonmesogenic components of the mesogenic mixitures which play an important role in inducing mesomorphism.
Źródło:
World Scientific News; 2017, 74; 68-79
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lossless transmission lines terminated by crystal oscillator circuit
Autorzy:
Angelov, Vasil G.
Powiązania:
https://bibliotekanauki.pl/articles/1065397.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Fixed point theorem
Kirchhoff’s law
Lossless transmission line
Mixed problem for hyperbolic system
Neutral equation
Periodic solution
Opis:
The present paper deals with ТЕМ propagation of waves along lossless transmission lines terminated by a crystal oscillator circuit. The crystal oscillator circuit generates nonlinear boundary conditions derived by the Kirchhoff’s law. Then the mixed problem for the hyperbolic transmission line system to an initial value problem for neutral system on the boundary is reduced. The main purpose of the present paper is to show an existence-uniqueness of a periodic solution of the neutral system. This is achieved by introducing a suitable operator acting on a space of periodic functions. Its fixed point is a periodic solution of the neutral system. The advantages of the presented method on numerical example are demonstrated. The solution can be obtained by successive approximations.
Źródło:
World Scientific News; 2019, 132; 65-83
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mixed adenocarcinoma-neuroendocrine cancer – a case report
Autorzy:
Gustalik, Joanna
Aebisher, David
Kaznowska, Ewa
Bartusik-Aebisher, Dorota
Powiązania:
https://bibliotekanauki.pl/articles/2040147.pdf
Data publikacji:
2020-12-30
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
central nervous system
MANEC
mixed adenocarcinoma-neuroendocrine cancer
Opis:
Introduction. Mixed adenocarcinoma-neuroendocrine cancer (MANEC) is a rare cancer that is characterized by aggressive course and poor prognosis. Aim. A case report and literature review. Description of the case. This article presents the case of a 63-year-old patient who was hospitalized due to the occurrence of neurological symptoms such as nausea, dizziness and headache as well as double vision and numbness of the hands. Suspected ischemic stroke, meningitis with bacterial etiology or brainstem pathology. Conclusion. MANEC composed of large neuroendocrine cells have better survival and clinical behavior than patients with small, intermediate or mixed large and intermediate cells.
Źródło:
European Journal of Clinical and Experimental Medicine; 2020, 4; 335-337
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experience Report: Towards Extending an OSEK-Compliant RTOS with Mixed Criticality Support
Autorzy:
Gupta, T.
Luit, E. J.
van den Heuvel, M. M. H. P.
Bril, R. J.
Powiązania:
https://bibliotekanauki.pl/articles/384148.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
OSEK
RTOS
mixed criticality
real-time operating system
Opis:
Background: With an increase of the number of features in a vehicle, the computational requirements also increase, and vehicles may contain up to 100 Electronic Control Units (ECUs) to accommodate these requirements. For cost-effectiveness reasons, amongst others, it is considered desirable to limit the growth of, or preferably reduce, the number of ECUs. To that end, mixed criticality is a promising approach that received a lot of attention in the literature, primarily from a theoretical perspective. Aim: In this paper, we address mixed criticality from a practical perspective. Our prime goal is to extend an OSEK-compliant real-time operating system (RTOS) with mixed criticality support, enabling such support in the automotive domain. In addition, we aim at a system (i) supporting more than two criticality levels; (ii) with minimal overhead upon an increase of the so-called criticality level indicator of the system; (iii) requiring no changes to an underlying operating system; and (iv) featuring further extensions, such as hierarchical scheduling and multi-core. Method: We used the so-called adaptive mixed criticality (AMC) scheme as a starting point for mixed criticality. We extended that scheme from two to more than two criticality levels (satisfying (i)) and complemented it with specified behavior for criticality level changes. We baptized our extended scheme AMC*. Rather than selecting a specific OSEK-compliant RTOS, we selected ExSched, an operating system independent external CPU scheduler framework for real-time systems, which requires no modifications to the original operating system source code (satisfying (iii)) and features further extensions (satisfying (iv))). Results: Although we managed to build a functional prototype of our system, our experience with ExSched made us decide to rebuild the system with a specific OSEK-compliant RTOS, being µC/OS-II. We also briefly report upon our experience with AMC* and suggest directions for improvements. Conclusions: Compared to extending ExSched with AMC*, extending µC/OS-II turned out to be straightforward. Although we now have a basic system operational and available for experimentation, enhancements of the AMC*-scheme are considered desirable before exploitation in a vehicle. Background: With an increase of the number of features in a vehicle, the computational requirements also increase, and vehicles may contain up to 100 Electronic Control Units (ECUs) to accommodate these requirements. For cost-effectiveness reasons, amongst others, it is considered desirable to limit the growth of, or preferably reduce, the number of ECUs. To that end, mixed criticality is a promising approach that received a lot of attention in the literature, primarily from a theoretical perspective. Aim: In this paper, we address mixed criticality from a practical perspective. Our prime goal is to extend an OSEK-compliant real-time operating system (RTOS) with mixed criticality support, enabling such support in the automotive domain. In addition, we aim at a system (i) supporting more than two criticality levels; (ii) with minimal overhead upon an increase of the so-called criticality level indicator of the system; (iii) requiring no changes to an underlying operating system; and (iv) featuring further extensions, such as hierarchical scheduling and multi-core. Method: We used the so-called adaptive mixed criticality (AMC) scheme as a starting point for mixed criticality. We extended that scheme from two to more than two criticality levels (satisfying (i)) and complemented it with specified behavior for criticality level changes. We baptized our extended scheme AMC*. Rather than selecting a specific OSEK-compliant RTOS, we selected ExSched, an operating system independent external CPU scheduler framework for real-time systems, which requires no modifications to the original operating system source code (satisfying (iii)) and features further extensions (satisfying (iv))). Results: Although we managed to build a functional prototype of our system, our experience with ExSched made us decide to rebuild the system with a specific OSEK-compliant RTOS, being µC/OS-II. We also briefly report upon our experience with AMC* and suggest directions for improvements. Conclusions: Compared to extending ExSched with AMC*, extending µC/OS-II turned out to be straightforward. Although we now have a basic system operational and available for experimentation, enhancements of the AMC*-scheme are considered desirable before exploitation in a vehicle.
Źródło:
e-Informatica Software Engineering Journal; 2018, 12, 1; 305-320
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proposal of IoT devices control using mixed reality and QR codes
Autorzy:
Stark, Erich
Kučera, Erik
Haffner, Oto
Powiązania:
https://bibliotekanauki.pl/articles/1837384.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
mechatronic system
mixed reality
augmented reality
QR code
system control
cloud
Opis:
The Internet of Things (IoT) and mixed reality are now among the most important areas in research or in practice. The aim of this paper is to propose an appropri‐ ate way of connection of these two areas, where is pos‐ sible to control and monitor mechatronic devices using a mobile device with augmented/mixed reality support. The main task will be to explore these options in the area and implement this solution as prototype. The proposed methodology for control and diagnostics of mechatronic devices is modern as it combines hardware management, Unity engine for mixed reality development, and commu‐ nication within the IoT network.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2020, 14, 3; 36-41
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An optimal path planning problem for heterogeneous multi-vehicle systems
Autorzy:
Klaučo, M.
Blažek, S.
Kvasnica, M.
Powiązania:
https://bibliotekanauki.pl/articles/330754.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
path planning
multi vehicle system
mixed-integer programming
planowanie ruchu
system wielopojazdowy
programowanie całkowitoliczbowe
Opis:
A path planning problem for a heterogeneous vehicle is considered. Such a vehicle consists of two parts which have the ability to move individually, but one of them has a shorter range and is therefore required to keep in a close distance to the main vehicle. The objective is to devise an optimal path of minimal length under the condition that at least one part of the heterogeneous system visits all desired waypoints exactly once. Two versions of the problem are considered. One assumes that the order in which the waypoints are visited is known a priori. In such a case we show that the optimal path can be found by solving a mixed-integer second-order cone problem. The second version assumes that the order in which the waypoints are visited is not known a priori, but can be optimized so as to shorten the length of the path. Two approaches to solve this problem are presented and evaluated with respect to computational complexity.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2016, 26, 2; 297-308
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal robust stabilizer design based on UPFC for interconnected power systems considering time delay
Autorzy:
Koofigar, H. R.
Isazadeh, G.
Powiązania:
https://bibliotekanauki.pl/articles/140441.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
UPFC
mixed H2 /H∞
LMI
wide area
power system oscillations
time delay
Opis:
A robust auxiliary wide area damping controller is proposed for a unified power flow controller (UPFC). The mixed H2 /H∞ problem with regional pole placement, resolved by linear matrix inequality (LMI), is applied for controller design. Based on modal analysis, the optimal wide area input signals for the controller are selected. The time delay of input signals, due to electrical distance from the UPFC location is taken into account in the design procedure. The proposed controller is applied to a multimachine interconnected power system from the IRAN power grid. It is shown that the both transient and dynamic stability are significantly improved despite different disturbances and loading conditions.
Źródło:
Archives of Electrical Engineering; 2017, 66, 3; 459-474
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exact solution of MHD mixed convection periodic flow in a rotating vertical channel with heat radiation
Autorzy:
Singh, K. D.
Powiązania:
https://bibliotekanauki.pl/articles/265295.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
konwekcja mieszana
magnetohydrodynamika
promieniowanie cieplne
periodic flow
mixed convection
magnetohydrodynamic (MHD)
rotating system
heat radiation
Opis:
Magnetohydrodynamic (MHD) mixed convection flow of a viscous, incompressible and electrically conducting fluid in a vertical channel is analyzed analytically. A magnetic field of uniform strength is applied perpendicular to the planes of the channel walls. The fluid is acted upon by a periodic variation of the pressure gradient in the vertically upward direction. The temperature of one of the plates is non-uniform and the temperature difference of the walls of the channel is high enough to induce heat transfer due to radiation. The fluid and the channel rotate in unison with an angular velocity about the axis normal to the plates of the channel. An exact analytical solution of the problem is obtained. Two cases of small and large rotation have been considered to assess the effects of different parameters involved in the flow problem. The velocity field, the amplitude and the phase angle of the shear stress are shown graphically and discussed in detail. During analysis it is found that the flow problem studied by Makinde and Mhone (2005) is incorrect physically and mathematically.
Źródło:
International Journal of Applied Mechanics and Engineering; 2013, 18, 3; 853-869
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Główne tendencje w polityce reform wyborczych w wyborach parlamentarnych
Autorzy:
Sokół, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/647504.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
elections
electoral systems
proportional electoral system
majority system
mixed-member electoral systems
politics of electoral reforms
political parties
parliaments
wybory
system wyborczy
system proporcjonalny
system większościowy
system mieszany
polityka reform wyborczych
partie polityczne
parlamenty
Opis:
In some political and science circles (including Poland) there are articulated views on the crucial role of electoral systems in the process of political competition. Therefore they express the opinion about prevalence of certain electoral arrangements in terms of the implementation of certain political preferences. Often hopes for the reform of the political system are associated with the changes of the electoral systems. In the Great Britain (the United Kingdom) and other English-speaking countries citizens have formed community associations whose aim is the change from the majority to the proportional electoral system. In the effect we have more proportional election result and extension of real electoral bid to a  larger number of political parties. On the other hand, in Poland, we have seen the opposite trend. Proponents of single-mandate constituencies depreciate the system of proportional representation. They express the belief in the positive effects of the majority system in the parliamentary elections. Radicals endorse the idea that only those electoral solutions are synonymous with electoral democracy and they are a  way to reduce the pathologies of political life. In terms of these issues there have arisen many misconceptions and political myths. The main purpose of this article is to pay attention to trends in the areas of electoral reforms in the world. The author tries to answer the following research questions: 1) What electoral systems were popular in the world in individual periods from the 19th to the 21st centuries? 2) What tendencies appear in changes of electoral systems in the recent years? 3) What is the being of popularity phenomenon of mixed-member electoral systems? In the recent years the most popular electoral systems are: proportional representation with open lists and majority rules in single member-districts.
W  niektórych środowiskach politycznych (w  tym w  Polsce), a  także naukowych artykułowane są poglądy o  – decydującej w  procesie rywalizacji politycznej – roli systemów wyborczych oraz w  związku z  tym wyrażane jest przekonanie o  przewadze niektórych rozwiązań wyborczych w  zakresie realizacji określonych preferencji politycznych. Często nadzieje w  zakresie reformy systemu politycznego wiąże się ze zmianami systemów wyborczych. W  Wielkiej Brytanii i  innych krajach anglosaskich powstały stowarzyszenia społeczne, których celem jest zmiana systemu większościowego na proporcjonalny. Jego zwolennicy opowiadają się za proporcjonalnością wyniku wyborczego i  rozszerzeniem realnej oferty  wyborczej do większej liczby podmiotów partyjnych. Z  kolei w  Polsce można zauważyć odwrotną tendencję. Zwolennicy jednomandatowych okręgów wyborczych, deprecjonując system proporcjonalnejreprezentacji, wyrażają przekonanie o  pozytywnych efektach systemu większościowego w  wyborach do Sejmu. W  wariancie radykalnym lansowana jest teza, że tylko powyższe rozwiązania wyborcze stanowią synonim demokracji i  są sposobem na ograniczenie patologii życia politycznego. Wokół tej problematyki narosło wiele nieporozumień i  mitów politycznych. Celem przedstawionego artykułu jest zwrócenie uwagi na tendencje w  zakresie polityki reform wyborczych w  świecie i  odpowiedź na takie pytania badawcze jak: 1) Jakie systemy wyborcze były popularne w  świecie w  poszczególnych okresach od XIX do XXI wieku?; 2) Jakie są tendencje w  zakresie zmian systemów wyborczych w  ostatnich latach?; 3) Z  czego wynika fenomen popularności mieszanych systemów wyborczych? W  ostatnich latach najbardziej popularnymi rozwiązaniami wyborczymi są system proporcjonalny z  listami otwartymi oraz system większościowy z  jednomandatowymi okręgami wyborczymi.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio K – Politologia; 2013, 20, 2
1428-9512
2300-7567
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio K – Politologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Administration-and communication-aware IP core mapping in scalable multiprocessor system-on-chips via evolutionary computing
Autorzy:
Guderian, F.
Schaffer, R.
Fettweis, G.
Powiązania:
https://bibliotekanauki.pl/articles/91539.pdf
Data publikacji:
2012
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
intellectual property
IP
IP core
mapping
system-on-chips
mixed-integer linear programming
MILP
genetic algorithm
GA
administration
communication
Opis:
In this paper, an efficient mapping of intellectual property (IP) cores onto a scalable multiprocessor system-on-chip with a k-ary 2-mesh network-on-chip is performed. The approach is to place more affine IP cores closer to each other reducing the number of traversed routers. Affinity describes the pairwise relationship between the IP cores quantified by an amount of exchanged communication or administration data. A genetic algorithm (GA) and a mixed-integer linear programming (MILP) solution use the affinity values in order to optimize the IP core mappings. The GA generates results faster and with a satisfactory quality relative to MILP. Realistic benchmark results demonstrate that a tradeoff between administration and communication affinity significantly improves application performance.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2012, 2, 2; 133-146
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 21

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