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Wyszukujesz frazę "Piasecki, K." wg kryterium: Wszystkie pola


Tytuł:
The basis of financial arithmetic from the viewpoint of utility theory
Autorzy:
Piasecki, K.
Powiązania:
https://bibliotekanauki.pl/articles/406429.pdf
Data publikacji:
2012
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
synergy effect of capital
diversification
financial arithmetic
Gossen’s first law
utility
Opis:
The main goal of this paper is to present a modern axiomatic approach to financial arithmetic. An axiomatic theory of financial arithmetic was first proposed by Peccati, who introduced an axiomatic definition of future value. This theory has been extensively developed in recent years. The proposed approach to financial arithmetic is based on the concept of the utility of a financial flow. This utility function is defined as a linear extension of a multicriterion comparison determined by an individual’s time preference and capital preference. The present value is then defined to be the utility of the financial flow. Therefore, the law of the diminishing marginal utility of wealth has been considered as an additional feature of the present value. The future value is defined as the inverse of the utility function. This definition is a generalization of Peccati’s one. The net present value is given as the unique additive extension of the utility of the financial flow. Moreover, the synergy effect and the diversification effect will be discussed. At the end, the axiomatic definition of the present value will be specified in three ways.
Źródło:
Operations Research and Decisions; 2012, 22, 3; 37-53
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The portfolio problem with present value modelled by a discrete trapezoidal fuzzy number
Autorzy:
Piasecki, K.
Siwek, J.
Powiązania:
https://bibliotekanauki.pl/articles/406597.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
portfolio
present value
discrete trapezoidal fuzzy number
discount factor
wartość aktualna
dyskretna liczba rozmyta
współczynnik dyskontowy
Opis:
A multi-asset portfolio in the case of its present value estimated by a discrete trapezoidal fuzzy number has been assessed. The benefits of owning a security have been evaluated according to an expected fuzzy discount factor. The ambiguity risk has been assessed by an energy measure and indistinctness risk has been evaluated by Kosko’s entropy measure. The relationship between the expected fuzzy discount factor for a portfolio and the expected fuzzy discount factors for its components has been derived. An analogous relationship between the values of the energy measure has been presented. The model has been illustrated by means of a profound numerical case study.
Źródło:
Operations Research and Decisions; 2018, 28, 1; 57-74
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The present value of a portfolio of assets with present values determined by trapezoidal ordered fuzzy numbers
Autorzy:
Łyczkowska-Hanćkowiak, A.
Piasecki, K.
Powiązania:
https://bibliotekanauki.pl/articles/406356.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
present value
ordered fuzzy number
portfolio
revised sum
Opis:
We consider the obvious thesis that the present value of a portfolio is equal to the sum of the present values of its components. The main goal of this paper is the implementation of this thesis in the case when present values are determined by trapezoidal ordered fuzzy numbers. We apply the revised sum of ordered fuzzy numbers. The associativity of such a revised sum is investigated here. In addition, we show that the multiple revised sum of a finite sequence of trapezoidal ordered fuzzy numbers depends on the ordering of its summands. Without any obstacles, the results obtained can be generalized to the case of any ordered fuzzy numbers.
Źródło:
Operations Research and Decisions; 2018, 28, 2; 41-56
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure Studies on Mechanically Alloyed $Ni_{50}Ti_{50-x}Mo_{x}$ (x=10, 25, 40 at.%) Systems during Milling and after Annealing
Autorzy:
Panek, J.
Karolus, M.
Piasecki, K.
Powiązania:
https://bibliotekanauki.pl/articles/1398359.pdf
Data publikacji:
2016-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.Bc
81.10.Jt
81.20.Ev
Opis:
The subject of this study is the phase composition evolution of $Ni_{50}Ti_{50-x}Mo_x$ (x=10, 25, 40 at.%) systems prepared by mechanical alloying in as-milled state and after subsequent heat treatment. During milling a mechanically induced solid state reaction between nickel, titanium and molybdenum was observed leading to the formation of nanocrystalline disordered solid solutions. As a result of heat treatment a creation of NiMo intermetallic phase was observed as well as structure relaxation of previously formed solid solutions.
Źródło:
Acta Physica Polonica A; 2016, 130, 4; 1066-1068
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Demokracja bezpośrednia w Polsce lokalnej – błędny model, zła praktyka
Direct Democracy in Local Poland – Wrong Model, Bad Practice
Autorzy:
Piasecki, Andrzej K.
Powiązania:
https://bibliotekanauki.pl/articles/414289.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Warszawski. Instytut Ameryk i Europy. Centrum Europejskich Studiów Regionalnych i Lokalnych (EUROREG)
Tematy:
demokracja bezpośrednia
referendum lokalne
samorząd lokalny
Polska
direct democracy
local referenda
local government
Polska
Opis:
Referenda lokalne w Polsce stanowią specyficzną formę demokracji bezpośredniej. Zarówno zapisy ustrojowe i ustawowe, jak i kilkunastoletnia już praktyka przyczyniły się do tego, że referenda te nabrały cech populistycznych. Dotyczy to przede wszystkim referendów w sprawie odwołania władz lokalnych (rady miasta i burmistrza). Pozostałe referenda, w sprawie samoopodatkowania mieszkańców oraz w tzw. innej ważnej sprawie dla gminy, mają marginalne znaczenie (jest to ok. 10-15% wszystkich referendów). Praktyka referendów lokalnych w Polsce obejmuje ok. 500 głosowań. W pierwszych trzech kadencjach samorządu terytorialnego (1990-2002) w 347 referendach starano się odwołać rady gminy. W tej liczbie tylko 37 referendów miało charakter rozstrzygający, tzn. frekwencja w głosowaniu przekroczyła 30%. Skuteczność instytucji referendum, z powodu niskiej frekwencji, ograniczona jest głównie do małych miast (do 20 tys. mieszkańców).
Local referenda are a special form of direct democracy in Poland. As a result of some legal solutions and in the light of practice, now reaching back for over ten years, they must be considered as a populist and ineffective instrument. This refers primarily to the referenda on recalling local authorities such as city council and mayor, accounting for 85%-90% of all such events. The practice of local referenda in Poland embraces approximately 400 cases. During the first three terms in office of the territorial self-government (1990-2002), 347 referenda concerned recalling the communal councils. Such referenda may be initiated only by the residents of the commune. Only 37 of these referenda proved to be decisive, as their attendance turnout exceeded 30%. The effectiveness of referenda is limited mostly to small towns (up to 20 thousand residents), where the threshold turnout is usually reached.
Źródło:
Studia Regionalne i Lokalne; 2005, 3(21); 67-84
1509-4995
Pojawia się w:
Studia Regionalne i Lokalne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of CpG oligodeoxynucleotide stimulation on percentage of T and B cells in chicken
Autorzy:
Chrzastek, K.
Piasecki, T.
Wieliczko, A.
Powiązania:
https://bibliotekanauki.pl/articles/30568.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
TLR stimulation in chickens has been shown to play a role in the initiation and regulation of innate and adaptive immune responses. The aim of this study was to use flow cytometry to establish the percentage of T and B subset in blood and lymphoid organs in chicks after CpG oligodeoxynucleotide (ODN) stimulation. It was demonstrated that the percentages of CD3⁺, CD4⁺, TCRγ δ⁺ cells and Bu-1⁺MHC class II⁺ cells in blood 24 h post-injection were significantly higher than in the control groups. It was also shown that the percentages of CD3⁺ and CD4⁺ cells in the spleen at 48 h post-injection were significantly higher than in control groups. The percentage of Bu-1⁺ cells in the bursa of Fabricius after CpG ODN stimulation (98.38 ± 0.84) was significantly higher than that found in the non-CpG ODN control group (94.54 ± 2.51) (p ≤ 0.05). The results indicate that class B CpG ODN increases the percentage of both T (especially CD4⁺ cells) and B cells.
Źródło:
Polish Journal of Veterinary Sciences; 2013, 16, 3
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simple Wide Frequency Range Impedance Meter Based on AD5933 Integrated Circuit
Autorzy:
Chabowski, K.
Piasecki, T.
Dzierka, A.
Nitsch, K.
Powiązania:
https://bibliotekanauki.pl/articles/221804.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
impedance
converter
AD5933
system-on-a-chip
measurement
Opis:
As it contains elements of complete digital impedance meter, the AD5933 integrated circuit is an interesting solution for impedance measurements. However, its use for measurements in a wide range of impedances and frequencies requires an additional digital and analogue circuitry. This paper presents the design and performance of a simple impedance meter based on the AD5933 IC. Apart from the AD5933 IC it consists of a clock generator with a programmable prescaler, a novel DC offset canceller for the excitation signal based on peak detectors and a current to voltage converter with switchable conversion ratios. The authors proposed a simple method for choosing the measurement frequency to minimalize errors resulting from the spectral leakage and distortion caused by a lack of an anti-aliasing filter in the DDS generator. Additionally, a novel method for the AD5933 IC calibration was proposed. It consists in a mathematical compensation of the systematic error occurring in the argument of the value returned from the AD5933 IC as a result. The performance of the whole system is demonstrated in an exemplary measurement.
Źródło:
Metrology and Measurement Systems; 2015, 22, 1; 13-24
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Resonant Controller for Higher Harmonics Compensation in PWM rectifiers
Autorzy:
Bobrowska-Rafał, M.
Rafał, K.
Piasecki, S.
Jasiński, M.
Powiązania:
https://bibliotekanauki.pl/articles/115511.pdf
Data publikacji:
2011
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
higher harmonics
harmonic compensation
THD
PWM rectifier
Opis:
In this article algorithm for minimizing negative impact of higher harmonics on proper operation of PWM rectifier is presented. Short overview of harmonics compensation methods is also given. Furthermore, Resonance Harmonic Compensator is widely described. Simulation results of compensation of harmonics are presented.
Źródło:
Challenges of Modern Technology; 2011, 2, 2; 23-26
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydroxyapatite as a support in protease immobilization process
Autorzy:
Zdarta, J.
Budzinska, K.
Kolodziejczak-Radzimska, A.
Klapiszewski, Ł.
Siwinska-Stefanska, K.
Bartczak, P.
Piasecki, A.
Maciejewski, H.
Jesionowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/110452.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
hydroxyapatite
enzyme immobilization
protease
physicochemical characteristic
Opis:
Hydroxyapatite is used as a matrix for immobilization of protease from Aspergillus oryzae by a process of adsorption. The matrix obtained has the surface area of 26 m2/g and particles in the shape of flakes of diameters no greater than 650 nm. The efficiency of the proposed method was confirmed by the Fourier transform infrared spectroscopy, elemental analysis and by analysis of parameters of the pore structure of matrix and products after immobilization. On the basis of the Bradford method it was found that the greatest amount of enzyme (132 mg/g) was immobilized from a solution of initial enzyme concentration of 7 mg/cm3 after 24 h of the process.
Źródło:
Physicochemical Problems of Mineral Processing; 2015, 51, 2; 633-646
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł

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