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Wyświetlanie 1-8 z 8
Tytuł:
Actual rate of the management fee in mutual funds of different styles
Autorzy:
Perez, Katarzyna
Szymczyk, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/22443136.pdf
Data publikacji:
2022
Wydawca:
Instytut Badań Gospodarczych
Tematy:
actual rate of the management fee
before-fee fund return
mutual fund operating model
mutual fund styles
Opis:
Research background: Exponential growth of passive mutual funds after 2007?2008 global financial crisis put pressure on active fund managers to lower the management fees. The real costs of active fund management are, however, very often higher than the values of management fees reported publicly. Thus it is not easy to decide on the quality of the fund management and estimate the level of management charges optimal for the future fund performance. Purpose of the article:  In this study, we propose to utilize an actual rate of the management fee (ARMF) disclosed in the management company financial statements as a measure of the real value of the management costs and investigate its determinants in mutual funds of different styles. Methods: Using a dataset of 21,618 monthly observations for 500 mutual funds from a market of diversified structure and high management fees charged we test the operating model of a mutual fund performance, and derive the formula of a before-fee return with the ARMF as its component. The fund performance is measured by a raw before-fee return and two types of risk-adjusted alphas based on the multifactor model of Carhart (1997) and the fund attributes. Later, using panel data we explain ARMF by mutual fund performance and attributes. We also compare the results to the ones obtained for the total operational cost (TOC) ? a value similar to ARMF that is disclosed in mutual fund financial reports. Findings & value added: We find that the proposed ARMF is related more to the size and not to the performance, age or a cash flow of mutual funds. We observe it among all studied fund styles. The largest deviations of the average ARMF are seen in the management companies that belong to the banks? capital groups. The proposed measure of the management fee included in the operating model of a mutual fund performance can be used for any local mutual fund worldwide, and compared with other fund markets of more or less diversified style structures.
Źródło:
Equilibrium. Quarterly Journal of Economics and Economic Policy; 2022, 17, 4; 969-1014
1689-765X
2353-3293
Pojawia się w:
Equilibrium. Quarterly Journal of Economics and Economic Policy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model of the Tactical Aircraft Operating System as an aggregated analysis domain for hazard risk management processes
Autorzy:
Augustyn, E.
Kadziński, A.
Smoczyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/196637.pdf
Data publikacji:
2018
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
tactical air force
Tactical Air Force System
Tactical Aircraft Operating System model
aggregated analysis domain
hazard risk management
taktyczne siły powietrzne
Opis:
The Tactical Aircraft Operating System (a system for tactical aircraft operational usage) constitutes the main research area of this paper. The authors present this system via an innovative model for an anthropotechnical system in the format of an aggregated analysis domain. This model constitutes a detailed explication of a fragment of the existing Tactical Air Force System metamodel at the level that concerns tactical aircraft operation systems. The aggregated analysis domain for tactical aircraft operations is built on seven single-analysis domain, each of which includes a series of processes, operations and events, related to the airman’s aviation activities cycle, what happens during an air mission and when an aircraft operating cycle is carried out. The subsequent individual analysis domains are connected to each other by an airman-aircraft anthropotechnical pair. The introduced method of modelling the Tactical Aircraft Operating System ensures the desired generality, comprehensiveness, coherence and transparency of such a model, which allows for its implementation in various types of tactical aircraft and tactical air force bases. In principle, within the presented considerations, the model is described in relation to a single aircraft operating cycle, which is carried out by one airman during a single air mission. However, the authors have taken care when creating this model structure, so that its implementation in more complex aircraft operating cycles (more than one aircraft and one airman) is possible. Apart from the analysis domains (“before take-off”, “departure”, “air task”, “arrival”, “after landing”), which are closely related to the essential aircraft operations, the model also includes the analysis domains associated with air mission preparations and summaries. The model for the Tactical Aircraft Operating System is described by the authors in textual form, as well as in tabular form. The presented concept constitutes an attempt to formally notate the Tactical Aircraft Operating System model, in which each of the individual analysis domains can be treated as an area of interest for hazard risk management processes within the Tactical Air Force System.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2018, 101; 15-26
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Working temperature calculation of single-core cable by nonlinear finite element method
Autorzy:
Meng, Xiaokai
Han, Peijie
Liu, Yongxin
Lu, Zhumao
Jin, Tao
Powiązania:
https://bibliotekanauki.pl/articles/141018.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cable
finite element simulation model
thermal conductivity
operating temperature
Opis:
By simulating the actual working conditions of a cable, the temperature variation rule of different measuring points under different load currents was analyzed. On this basis, a three-dimensional finite element model (FEM) was established, and the difference and influence factors between the simulation temperature and the experimental measured value were discussed, then the influence of thermal conductivity on the operating temperature of the conductor layer was studied. Finally, combined with the steady-state thermal conductivity model and the experimental measured data, the relation between thermal conductivity and load current was obtained.
Źródło:
Archives of Electrical Engineering; 2019, 68, 3; 643-656
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automated tracking and real time following of moving person for robotics applications
Autorzy:
Patoliya, Jignesh J.
Mewada, Hiren K.
Powiązania:
https://bibliotekanauki.pl/articles/384835.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
visual tracking
robot operating system
identity retention
Gaussian Mixture Model
Opis:
Presently the interaction of robots with human plays an important role in various social applications. Reliable tracking is an important aspect for the social robots where robots need to follow the moving person. This paper proposes the implementation of automated tracking and real time following algorithm for robotic automation. Occlusion and identity retention are the major challenges in the tracking process. Hence, a feature set based identity retention algorithm is used and integrated with robot operating system. The tracking algorithm is implemented using robot operating system in Linux and using OpenCV. The tracking algorithm achieved 85% accuracy and 72.30% precision. Further analysis of tracking algorithm corresponds to the integration of ROS and OpenCV is presented. The analysis of tracking algorithm concludes that ROS linking required 0.64% more time in comparison with simple OpenCV code based tracking algorithm.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2019, 13, 4; 31-37
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical modelling of dynamic processes in gas transmission
Autorzy:
Prytula, N.
Powiązania:
https://bibliotekanauki.pl/articles/411157.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
transmission system
compressor station
optimal operating mode
gas flow model
network model
piping diagram
finite element method
Opis:
The problem of finding the parameters of the gas transmission system in terms of its operations under unsteady operating modes are considered. We show mathematical models of gas flows in the basic facilities in the system with a complicated piping diagram. The solution is built to solve a system of partial differentia equations with the finite element method of large dimension with boundary conditions, some of which are designed in the process of solving the system of equations. This is due to the provision of technical and technological constraints on the pressure of the controlled points of the system. On the resistance to finding a solution significantly affects a step of the time coordinate. The proposed algorithm in the editing process of flow diagrams provides an increase in stability of solving systems of equations, and significantly reduces the time for the simulation.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2015, 4, 3; 57-63
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical model of choice of the switcher’s optimal operating mode which work on the system of two units on the basis of fuel rate diminishing criterion
Мodel' vybora optimal'nykh rezhimov raboty manevrovykh teplovozov, kotorye rabotajut po sisteme dvukh edinic na osnove kriterija snizhenija raskhoda topliva
Autorzy:
Falendish, A.
Gatchenko, V.
Beletsky, Y.
Powiązania:
https://bibliotekanauki.pl/articles/791877.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
mathematical model
calculation
energy expense
work optimization
diesel engine
diesel locomotive
operating mode
work
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 4
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design and simulation of an air conditioning project in a hospital based on computational fluid dynamics
Plan i symulacja projektu klimatyzacji w szpitalu, na podstawie obliczeniowej mechaniki płynów
Autorzy:
Ding, X. R.
Guo, Y. Y.
Chen, Y. Y.
Powiązania:
https://bibliotekanauki.pl/articles/230580.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
szpital
sala operacyjna
klimatyzacja
mechanika płynów
CFD
symulacja numeryczna
model turbulencji
projekt
hospital
operating room
air conditioning
fluid mechanics
numerical simulation
turbulence model
design
Opis:
This study aims to design a novel air cleaning facility which conforms to the current situation in China, and moreover can satisfy our demand on air purification under the condition of poor air quality, as well as discuss the development means of a prototype product. Air conditions in the operating room of a hospital were measured as the research subject of this study. First, a suitable turbulence model and boundary conditions were selected and computational fluid dynamics (CFD) software was used to simulate indoor air distribution. The analysis and comparison of the simulation results suggested that increasing the area of air supply outlets and the number of return air inlets would not only increase the area of unidirectional flow region in main flow region, but also avoid an indoor vortex and turbulivity of the operating area. Based on the summary of heat and humidity management methods, the system operation mode and relevant parameter technologies as well as the characteristics of the thermal-humidity load of the operating room were analyzed and compiled. According to the load value and parameters of indoor design obtained after our calculations, the airflow distribution of purifying the air-conditioning system in a clean operating room was designed and checked. The research results suggested that the application of a secondary return air system in the summer could reduce energy consumption and be consistent with the concept of primary humidity control. This study analyzed the feasibility and energy conservation properties of cleaning air-conditioning technology in operating rooms, proposed some solutions to the problem, and performed a feasible simulation, which provides a reference for practical engineering.
Przedmiotem tego badania była czysta sala operacyjna. Zastosowano technologię czystej klimatyzacji. Obciążenie chłodnicze czystej klimatyzacji w okresie letnim zostało obliczone przy użyciu praktycznej metody obciążenia chłodniczego klimatyzacji oraz oprogramowania służącego do obliczania zużycia energii. Wyniki obliczeń zostały porównane i przeanalizowane. Model rozprowadzania powietrza był symulowany za pomocą Airpak 3.0, a symulowane wyniki zostały przeanalizowane.
Źródło:
Archives of Civil Engineering; 2017, 63, 2; 23-38
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An efficient microgrid model based on Markov fuzzy demand-side management
Autorzy:
Jabash Samuel, G. K.
Sivagama Sundari, M. S.
Bhavani, R.
Jasmine Gnanamalar, A.
Powiązania:
https://bibliotekanauki.pl/articles/27311444.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
smart grid
fuzzy Markov decision process
power scheduling
operating cost
nonlinear model predictive control
inteligentna sieć
planowanie mocy
koszt operacyjny
proces decyzyjny Markowa rozmyty
regulator predykcyjny nieliniowego modelu
Opis:
Today’s electricity management mainly focuses on smart grid implementation for better power utilization. Supply-demand balancing, and high operating costs are still considered the most challenging factors in the smart grid. To overcome this drawback, a Markov fuzzy real-time demand-side manager (MARKOV FRDSM) is proposed to reduce the operating cost of the smart grid system and maintain a supply-demand balance in an uncertain environment. In addition, a non-linear model predictive controller (NMPC) is designed to give a global solution to the non-linear optimization problem with real-time requirements based on the uncertainties over the forecasted load demands and current load status. The proposed MARKOV FRDSM provides a faster scale power allocation concerning fuzzy optimization and deals with uncertainties and imprecision. The implemented results show the proposed MARKOV FRDSM model reduces the cost of operation of the microgrid by 1.95%, 1.16%, and 1.09% than the existing method such as differential evolution and real coded genetic algorithm and maintains the supply-demand balance in the microgrid.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 3; art. no. e145569
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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