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Tytuł:
The Theory of Constraints as a Method of Results Optimization in Complex Organization
Autorzy:
Janosz, M.
Powiązania:
https://bibliotekanauki.pl/articles/382239.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
theory of constraints
optimization of production organization
foundry performance
teoria ograniczeń
organizacja produkcji
wydajność odlewni
Opis:
The paper presents the theory of constraints (TOC) as a method used to improve results in a complex, multiplants organization. In the article the assumptions of this method has been presented as well as iterative approach concerning how to launch it in practice. Main indicators for organizational effectiveness assessment have also been presented. The maximization of production assets utilization is a key issue for competitive organization in the changing market conditions. An appropriate usage of the theory of constraints enables efficient allocation of financial assets among particular plants within a capital group. An application of a method has been presented based on throughput analyses and its influence to improve financial results of one plant organization and synergy effect in multiplants organization. The theory of constraints can be used in almost every kind of business sectors, among them are metal and foundry industries. It allows to be implemented in production organizations as well as in any other company’s profiles. Everywhere the constraint has been defined there is a chance to achieve an improvement following the presented method. The examples have been taken from the casting plants which use continuous and mold casting technologies. The examples show that TOC approach can be successfully employed as the improvement tool of foundries’ performances.
Źródło:
Archives of Foundry Engineering; 2018, 18, 4; 59-64
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of different organic fluids on performances of binary slag washing water power plants
Autorzy:
Li, Z.
Liu, Y.
Dong, P.
Zhang, Y.
Xiao, S.
Powiązania:
https://bibliotekanauki.pl/articles/240438.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
slag washing water
efficiency
organic fluids
binary power cycle
wydajność
płyn organiczny
podwójny cykl zasilania
Opis:
In this paper, 3 typical organic fluids were selected as working fluids for a sample slag washing water binary power plants. In this system, the working fluids obtain the thermal energy from slag washing water sources. Thus, it plays a significant role on the cycle performance to select the suitable working fluid. Energy and exergy efficiencies of 3 typical organic fluids were calculated. Dry type fluids (i.e., R227ea) showed higher energy and exergy efficiencies. Conversely, wet fluids (i.e., R143a and R290) indicated lower energy and exergy efficiencies, respectively.
Źródło:
Archives of Thermodynamics; 2017, 38, 3; 49-62
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The literature review of Supply Chain performance measurement in the manufacturing industry
Autorzy:
Sillanpää, I.
Kess, P.
Powiązania:
https://bibliotekanauki.pl/articles/407345.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
przemysł przetwórczy
łańcuch dostaw
wydajność
zarządzanie
supply chain
performance measurement
supply chain management
manufacturing industry
strategy
operations
Opis:
The article addresses the issues of Supply Chain (SC) performance measurement - the process of qualifying the efficiency and effectiveness of the supply chain. The aim of this study is to present a supply chain measurement approaches for manufacturing industry. The research is based on a review of the current understanding of supply chain management and literature related to supply chain performance measurement. This study creates a framework for supply chain measurement by presenting the main theory framework of supply chain performance measurement. It is stated that supply chain performance measurement is extremely important in developing supply chain. The measurement framework in this study offers guidelines for measuring the supply chain in manufacturing industry.
Źródło:
Management and Production Engineering Review; 2012, 3, 2; 79-88
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Resource-saving technologies of railway transportation of grain freights for export
Autorzy:
Kozachenko, D.
Vernigora, R.
Kuznetsov, V.
Lahvinova, N.
Rustamov, R.
Papahov, A.
Powiązania:
https://bibliotekanauki.pl/articles/223476.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rail transportation
grain export
efficiency
consignor routing
concentration of loading
cluster analysis
transport kolejowy
eksport zboża
wydajność
Opis:
The research objective is to increase the efficiency of export railway transportation of grain freights in Ukraine by the introduction of consignor routing, a concentration of loading of grain on junction elevators and the organization of the movement of grain routes according to the schedule. According to the researchers in USA and EU, one of the effective directions for decreasing the expenses in a logistic chain of grain delivery to ports is consignor routing of railway transportation. Consignor routing of transportations of grain freights provides a concentration of their loading at junctions. The choice of junctions is proposed to be carried out on the basis of methods of the cluster analysis. For formation of regions for a concentration of grain loading the theory of sets and multicriteria optimization are used. As a result, on the basis of the modified simplex method are chosen 24 regions of possible concentration of grain loading that cover 70 stations on Ukrainian railways providing 7,5 million t consignor routing for grain in a year with minimal additional expenses. The assessment of the efficiency of railway transportation routing of grain freights is calculated with use of the developed simulation model. Researches showed that application of consignor routing allows to reduce a turn-round cycle for grain wagon in a logistic chain of deliveries up to 27%, and application of the schedule for consignor routes allows to reduce a turn-round cycle up to 62%, in comparison with transportation by car loading. Thus, as showed the calculations executed for one of the directions of grain transportation for export, the necessary operation park of grain-carrier wagons is reduced twice, thereby allowing to cut logistic expenses on a delivery of the Ukrainian grain through seaports to the world markets.
Źródło:
Archives of Transport; 2018, 45, 1; 63-74
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parallel anisotropic mesh refinement with dynamic load balancing for transonic flow simulations
Autorzy:
Gepner, S.
Majewski, J.
Rokicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/202281.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
parallel CFD
adaptation
dynamic load balancing
mesh refinement
parallel efficiency
CFD
dostosowanie
dynamiczne obciążenia
wydajność
modele siatkowe
Opis:
The present paper discusses an effective adaptive methods suited for use in parallel environment. An in-house, parallel flow solver based on the residual distribution method is used for the solution of flow problems. Simulation is parallelized based on the domain decomposition approach. Adaptive changes to the mesh are achieved by two distinctive techniques. Mesh refinement is performed by dividing element edges and a subsequent application of pre defined splitting templates. Mesh regularization and derefinement is achieved through topology conserving node movement (r-adaptivity). Parallel implementations of an adaptive use the dynamic load balancing technique.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 2; 195-207
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energetic Efficiency of Mixing and Mass Transfer in Single Phase and Two-Phase Systems
Autorzy:
Bałdyga, J.
Jasińska, M.
Powiązania:
https://bibliotekanauki.pl/articles/184853.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chemical test reaction
energetic efficiency
mass transfer
mixing
chemiczne reakcje testowe
wydajność energetyczna
transfer masy
mieszanie
Opis:
In this work a concept of energetic efficiency of mixing is presented and discussed; a classical definition of mixing efficiency is modified to include effects of the Schmidt number and the Reynolds number. Generalization to turbulent flows is presented as well. It is shown how the energetic efficiency of mixing as well as efficiencies of drop breakage and mass transfer in twophase liquid-liquid systems can be identified using mathematical models and test chemical reactions. New expressions for analyzing efficiency problem are applied to identify the energetic efficiency of mixing in a stirred tank, a rotor stator mixer and a microreactor. Published experimental data and new results obtained using new systems of test reactions are applied. It has been shown that the efficiency of mixing is small in popular types of reactors and mixers and thus there is some space for improvement.
Źródło:
Chemical and Process Engineering; 2017, 38, 1; 79-96
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The simultaneous effect of the operating temperature and solar radiation on the efficiency of photovoltaic panels
Jednoczesny wpływ temperatury pracy oraz promieniowania słonecznego na wydajność ogniw fotowoltaicznych
Autorzy:
Heim, D.
Powiązania:
https://bibliotekanauki.pl/articles/231179.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
temperatura pracy
promieniowanie słoneczne
wydajność
ogniwo fotowoltaiczne
symulacja
operating temperature
solar radiation
efficiency
photovoltaic cell
simulation
Opis:
The proper designing of PV systems requires the use of advanced building energy simulation techniques. It allows to design the best position of the PV array, as well as the right quantity of produced energy in different cases. On the other hand the PV efficiency is not only a constant value but changes according to temperature and solar radiation. This paper is devoted to estimate the simultaneous effect of both weather factors on PV efficiency. The task was achieved by numerical simulation and ESP-r software. Computer simulations have been carried out with the use of the Typical Meteorological Year data for Warsaw (52°N 21°E). The greatest influence of temperature on the efficiency of solar energy conversion was observed for crystalline silicon cells. The influence of the boundary conditions assumed in the study is ignored for amorphous silicon cells in the summer period and regardless of the material type in the winter period.
Fotowoltaika jest najbardziej popularnym systemem konwersji energii promieniowania słonecznego na prąd elektryczny. Energia elektryczna produkowana przez systemy PV może być spożytkowana na potrzeby danego użytkownika, zaś jej ewentualna nadwyżka sprzedana bezpośrednio do sieci elektroenergetycznej. Prawidłowe zaprojektowanie systemu PV wymaga użycia zaawansowanych technik symulacji energetycznych budynków. Pozwalają one na wybór najlepszego usytuowania oraz dają prawidłową informacje na temat możliwej do uzyskania ilości energii. Z innej jednak strony, systemy PV nie posiadają stałej wydajności a jest ona zależna od temperatury pracy oraz docierającego do ogniwa promieniowania słonecznego. Wpływ temperatury na wydajność ogniw PV jest dobrze znana z literatury przedmiotu. Artykuł ten ma natomiast na celu oszacowanie jednoczesnego wpływu temperatury i promieniowania na wydajność ogniw. Główny cel osiągnięty został poprzez obliczenia symulacyjne z zastosowaniem zaawansowanego narzędzia obliczeniowego, programu ESP-r. Obliczenia przeprowadzono dla danych meteorologicznych Warszawy. Uwzględniono zarówno promieniowanie bezpośrednie jak i rozproszone. Wyznaczono ilość wyprodukowanej energii dla wybranych tygodni oraz wpływ temperatury i promieniowania słonecznego na wydajność ogniw PV. Największy wpływ temperatury na wydajność konwersji energii słonecznej zaobserwowano latem dla ogniw wykonanych z krzemu krystalicznego. Dla ogniw wykonanych z krzemu amorficznego w okresie lata oraz bez względu na rodzaj materiału w okresie zimy wpływ temperatury dla przyjętych warunków obliczeniowych był pomijany. Istotny natomiast był wpływ zmieniającego się natężenia promieniowania, którego spadek znacznie obniża zdolność konwersji fotoelektrycznej zarówno w okresie zimy jak i lata.
Źródło:
Archives of Civil Engineering; 2011, 57, 3; 261-274
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel Extraction Process Of Rare Earth Elements From NdFeB Powders Via Alkaline Treatment
Nowy sposób ekstrakcji pierwiastków ziem rzadkich z proszków NdFeB w roztworach alkalicznych
Autorzy:
Chung, K. W.
Kim, C.-J.
Yoon, H.-S.
Powiązania:
https://bibliotekanauki.pl/articles/355324.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
recycling
NdFeB magnet
alkaline treatment
leaching
selective leaching efficiency
recykling
magnes neodymowy
obróbka alkaliczna
ługowanie
wydajność
Opis:
The alkaline treatment of NdFeB powders in NaOH solution at various equivalent amounts of NaOH at 100°C was performed. The resultant powders were then leached in 0.5M H2SO4 solution at 25°C for 2 minutes. At 5 equivalents of NaOH, neodymium in NdFeB powders was partially transformed to neodymium hydroxide. The transformation of neodymium to neodymium hydroxide actually occurred at 10 equivalents of NaOH and was facilitated by increasing the equivalent of NaOH from 10 to 30. In addition, iron was partially transformed to magnetite during the alkaline treatment, which was also promoted at a higher equivalent of NaOH. The leaching yield of neodymium from alkaline-treated powders was increased with an increasing equivalent of NaOH up to 10; however, it slightly decreased with the equivalent NaOH of over 10. The leaching yield of iron was inversely proportional to that of rare earth elements. NdFeB powders treated at 10 equivalents of NaOH showed a maximum leaching yield of neodymium and dysprosium of 91.6% and 94.6%, respectively, and the lowest leaching yield of iron of 24.2%, resulting in the highest selective leaching efficiency of 69.4%.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 2B; 1301-1305
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluating the impact of long cargo dwell time on port performance: an evaluation model of Douala International Terminal in Cameroon
Autorzy:
Aminatou, M.
Jaqi, Y.
Okyere, S.
Powiązania:
https://bibliotekanauki.pl/articles/223976.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cargo
dwell time
quay
port
port performance
terminal operations
ładunek
czas oczekiwania
nadbrzeże
wydajność portu
terminal
Opis:
Create as part of the concession agreement signed by the Container Terminal 28 June 2004 with the port of Douala international terminal (DIT) Company aims to manage, operate and develop the Port’s container handling activity in Douala. This paper investigates the main factors explaining long container dwell times in Douala Port. Using original and extensive data on container imports in the Port of Douala, it seeks to provide a basic understanding of why containers stay on average more than two weeks in port space while long dwell times are widely recognized as a critical hindrance to economic development. It also demonstrates the interrelationships that exist between logistics performance of consignees, operational performance of port operators and efficiency of customs clearance operations. Shipment level analysis is used to identify the main determinants of long cargo dwell times and the impact of shipment characteristics such as fiscal regime, density of value, bulking and packaging type, last port of call, and region of origin or commodity group on cargo dwell time in ports is tested. External factors, such as performance of clearing and forwarding agents, shippers and shipping line strategies, also play an important role in the determination of long dwell times.
Źródło:
Archives of Transport; 2018, 46, 2; 7-20
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of waste heat energy sources of a conventional steam propulsion plant of an LNG carrier
Autorzy:
Adamkiewicz, Andrzej
Grzesiak, Szymon
Powiązania:
https://bibliotekanauki.pl/articles/240754.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
waste heat energy
steam turbine
efficiency
propulsion plant
energia cieplna odpadowa
silnik parowy
wydajność
instalacja napędowa
Opis:
This paper presents the origins of marine steam turbine application on liquefied natural gas carriers. An analysis of alternative propulsion plant trends has been made. The more efficient ones with marine diesel engines gradually began to replace the less efficient plants. However, because of many advantages of the steam turbine, further development research is in progress in order to achieve comparable thermal efficiency. Research has been carried out in order to achieve higher thermal efficiency throughout increasing operational parameters of superheated steam before the turbine unit; improving its efficiency to bring it nearer to the ideal Carnot cycle by applying a reheating system of steam and multi stage regenerative boiler feed water heating. Furthermore, heat losses of the system are reduced by: improving the design of turbine blades, application of turbine casing and bearing cooling, as well as reduction in steam flow resistance in pipe work and maneuvering valves. The article identifies waste energy sources using the energy balance of a steam turbine propulsion plant applied on the liquefied natural gas carrier which was made out basing on results of a passive operation experiment, using the measured and calculated values from behavioral equations for the zero-dimensional model. Thermodynamic functions of state of waste heat fluxes have been identified in terms of their capability to be converted into usable energy fluxes. Thus, new ways of increasing the efficiency of energy conversion of a steam turbine propulsion plant have been addressed.
Źródło:
Archives of Thermodynamics; 2019, 40, 3; 195-210
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal performance analysis of manned airships in a thermally variable environment
Autorzy:
Shi, Hong
Liu, Meinan
Chen, Jiamin
Zou, Yitao
Powiązania:
https://bibliotekanauki.pl/articles/2173708.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
manned airship
thermal performance
nacelle
temperature difference
flight position
sterowiec załogowy
wydajność cieplna
gondola
różnica temperatur
pozycja lotu
Opis:
The safety and reliability of the manned airship depend to a considerable extent on its thermal performance. In this paper, heat balance equations are developed and solved in the C++ programming language. The temperature variation of the enclosure, gasbag, and nacelles of the manned airship is investigated. In addition, the effects of season, latitude, and orientation on the thermal performance of the manned airship and the airship nacelle are investigated. The results show that: (1) The average temperature difference of the nacelle surface at the same time is 25 K, while the maximum temperature difference in the nacelle is 29 K during the day, (2) the temperature distribution in the nacelle is similar in spring and autumn, with maximum temperature between 306 K and 309 K. The maximum temperature in the nacelle is between 300 K and 303 K in winter while the maximum temperature in the nacelles is between 309 K and 315 K in summer, (3) as the flight position of the manned airship changes from 20°N to 60°N, the average nacelle temperature varies slightly by about 1 K. However, as the latitude increases, the high- temperature region shifts from the bottom of the nacelle to the side of the nacelle, and (4) the temperature distribution of the upper envelope of the airship varies considerably with orientation. However, the average temperature of the nacelle is less impacted by orientation. These results are useful for understanding the thermal performance of manned airships.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 5; art. no. e143105
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interception of a hypersonic vehicle by low-speed interceptors: novel perspectives and cost optimisation
Autorzy:
Liu, Shuangxi
Liu, Shijun
Yan, Binbin
Zhang, Tong
Zhang, Xu
Yan, Jie
Powiązania:
https://bibliotekanauki.pl/articles/2173726.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
small speed ratio
hypersonic vehicle
interception performance
boundary conditions
współczynnik prędkości mały
pojazd hipersoniczny
wydajność przechwytywania
warunki brzegowe
Opis:
The conditions for accurately intercepting hypersonic vehicles by low-speed interceptors in the terminal guidance process are examined, considering the general form of a guidance scheme. First, based on the concept of the engagement geometry, three interception scenarios are established considering different manoeuvring configurations of the interceptors and hypersonic vehicle. Second, the boundary conditions for intercepting hypersonic vehicles (with speeds higher than those of the interceptors) are specified for the three scenarios, considering several factors: the speed, path angle, line-of-sight angle, and available overload of the interceptor; path angle and manoeuvrability of the hypersonic vehicle; and relative distance between the interceptor and vehicle. A series of simulations are performed to clarify the influence of each factor on the interception performance in the three interception scenarios. The challenges associated with accurately intercepting hypersonic vehicles by low-speed interceptors are summarised, and several recommendations for designing guidance laws are presented.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 6; art. no. e143537
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Atmospheric Deposition Effects on Agricultural Soil Acidification State — Key Study : Krupanj Municipality
Autorzy:
Čakmak, D.
Beloica, J.
Perović, V.
Kadović, R.
Mrvić, V.
Knežević, J.
Belanović, S.
Powiązania:
https://bibliotekanauki.pl/articles/204744.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
soil state
acidification
acidity class
VSD model
sustainability
stan gleby
zakwaszenie
klasa kwasowości
model VSD
trwała wydajność
Opis:
Acidification, as a form of soil degradation is a process that leads to permanent reduction in the quality of soil as the most important natural resource. The process of soil acidification, which in the first place implies a reduction in soil pH, can be caused by natural processes, but also considerably accelerated by the anthropogenic influence of excessive S and N emissions, uncontrolled deforestation, and intensive agricultural processes. Critical loads, i.e. the upper limit of harmful depositions (primarily of S and N) which will not cause damages to the ecosystem, were determined in Europe under the auspices of the Executive Committee of the CLRTAP in 1980. These values represent the basic indicators of ecosystem stability to the process of acidification. This paper defines the status of acidification for the period up to 2100 in relation to the long term critical and target loading of soil with S and N on the territory of Krupanj municipality by applying the VSD model. The Inverse Distance Weighting (IDW) geostatistic module was used as the interpolation method. Land management, particularly in areas susceptible to acidification, needs to be focused on well-balanced agriculture and use of crops/seedlings to achieve the optimum land use and sustainable productivity for the projected 100-year period.
Źródło:
Archives of Environmental Protection; 2014, 40, 2; 137-148
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The performance of tramway service from the users viewpoint: A comparative analysis between two Moroccan cities
Autorzy:
Zehmed, Karim
Jawab, Fouad
Powiązania:
https://bibliotekanauki.pl/articles/2067395.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
tramway service
performance
perceived quality
satisfaction
Morocco
comparative analysis
komunikacja tramwajowa
wydajność
postrzegana jakość
Maroko
analiza porównawcza
Opis:
The Moroccan government has recently promoted sustainable public transport projects such as tramway services namely in the two largest cities of country, Casablanca and Rabat-Salé. Since its launch, the tramway service is increasingly present in citizens' daily lives in both cities. To maintain its attractiveness, operators and transport authorities should examine the performance of tramway service from user’s point of view. That is, an in-depth understanding of how passengers perceive service quality and what make them satisfied. The purpose of this study is to compare the performance of tramway service in the two cities based on the opinions of a sample size of 613 and 435 individuals in each city. The outcome of this peer comparison allows to determine the strengths and weaknesses of provided service and identify priorities for improvement in each city. Regarding the methodology, we adopted a two-step approach to achieve our research purpose. The first stage intends to compare users' perceptions regarding Service Quality Attributes (SQAs) and overall satisfaction and to identify any significant differences between the two cities. To this end, we applied, in the first stage, a student t-test of two independent samples. The second stage employs an ordered probit regression model to identify the most important SQA; i.e., which most influence the overall satisfaction, and improvements priorities for the current service tramway. The results showed that, in average, passengers found service quality as good and are satisfied with tramway service in both cities. Tram vehicles’ is the best appreciated service attribute in both cities while Comfort in Rabat-Salé and Lines’ connectivity in Casablanca are the least appreciated. Moreover, the service performance of Rabat-Salé tramway exceeds that of Casablanca tramway in terms of service Availability, service Reliability, Fares level, Tram vehicle, Drivers’ competence, Lines’ connectivity, and overall satisfaction. On the other hand, we found that among top six important attributes, Reliability and Administrators should be prioritized for improvement in Casablanca; and staff, Lines, Comfort, and Administrators in Rabat-Salé. Results showed that improvements in all these service aspects would increase significantly overall user’s satisfaction.
Źródło:
Archives of Transport; 2021, 60, 4; 7--21
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The performance of tramway service from the users viewpoint: A comparative analysis between two Moroccan cities
Autorzy:
Zehmed, Karim
Jawab, Fouad
Powiązania:
https://bibliotekanauki.pl/articles/2067398.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
tramway service
performance
perceived quality
satisfaction
Morocco
comparative analysis
komunikacja tramwajowa
wydajność
postrzegana jakość
Maroko
analiza porównawcza
Opis:
The Moroccan government has recently promoted sustainable public transport projects such as tramway services namely in the two largest cities of country, Casablanca and Rabat-Salé. Since its launch, the tramway service is increasingly present in citizens' daily lives in both cities. To maintain its attractiveness, operators and transport authorities should examine the performance of tramway service from user’s point of view. That is, an in-depth understanding of how passengers perceive service quality and what make them satisfied. The purpose of this study is to compare the performance of tramway service in the two cities based on the opinions of a sample size of 613 and 435 individuals in each city. The outcome of this peer comparison allows to determine the strengths and weaknesses of provided service and identify priorities for improvement in each city. Regarding the methodology, we adopted a two-step approach to achieve our research purpose. The first stage intends to compare users' perceptions regarding Service Quality Attributes (SQAs) and overall satisfaction and to identify any significant differences between the two cities. To this end, we applied, in the first stage, a student t-test of two independent samples. The second stage employs an ordered probit regression model to identify the most important SQA; i.e., which most influence the overall satisfaction, and improvements priorities for the current service tramway. The results showed that, in average, passengers found service quality as good and are satisfied with tramway service in both cities. Tram vehicles’ is the best appreciated service attribute in both cities while Comfort in Rabat-Salé and Lines’ connectivity in Casablanca are the least appreciated. Moreover, the service performance of Rabat-Salé tramway exceeds that of Casablanca tramway in terms of service Availability, service Reliability, Fares level, Tram vehicle, Drivers’ competence, Lines’ connectivity, and overall satisfaction. On the other hand, we found that among top six important attributes, Reliability and Administrators should be prioritized for improvement in Casablanca; and staff, Lines, Comfort, and Administrators in Rabat-Salé. Results showed that improvements in all these service aspects would increase significantly overall user’s satisfaction.
Źródło:
Archives of Transport; 2021, 60, 4; 7--21
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł

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