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Wyświetlanie 1-2 z 2
Tytuł:
How transit improvements are perceived by passengers? Results of a before-after customer satisfaction survey
Autorzy:
Sahraei, Mina
Mesbah, Mohamed
Habibian, Meeghat
Saeidi, Tara
Soltanpour, Amirali
Powiązania:
https://bibliotekanauki.pl/articles/27311783.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
improvements of transports
passengers' satisfaction
structural equation modelling
importance-performance analysis
usprawnienia transportu
zadowolenie pasażerów
modelowanie równań strukturalnych
analiza ważności
Opis:
Although customer satisfaction surveys are widely utilized by transit agencies, there are limited analyses in the literature on the perception of passengers as a result of service improvements. A before-after study can help to evaluate the effect of changes from customer’s points of view and thus guarantee a continuous improvement in the service. In this paper, customer satisfaction was directly observed through a Customer Satisfaction Survey (CSS) before and after certain changes. Furthermore, Structural Equation Modeling (SEM) is utilized to evaluate passenger’s perception of the service attribute importance. Finally, an Importance-Performance Analysis (IPA) is adapted to analyze the changes in satisfaction and importance from the passenger’s perspective on each service attribute. In both before and after cases, a consistent SEM structure is used. The follow-up IPA provides transit agencies with priorities to improve service attributes and helps managers to devote their resources to key attributes that matter to the riders. Metro line 3 in Tehran was selected as the case study which is 33.7 km long with 25 stations. Two surveys were performed one before (with the sample size of 300), and one after (with the sample size of 384) a set of changes the most important of which was a headway reduction. The SEM was developed with five latent variables of main service, comfort, information, protection, and physical appearance. This structure was assessed on both the before and after data collections and showed to be valid. Security at the station and security on board were the most important service attributes in both waves according to their factor loadings, while ethics and behavioral messages had the smallest factor loading and the least importance. Comparing the attributes in both surveys suggested that reducing the headway was effective, although it did not seem to be sufficient for enhancing the overall customer satisfaction and improvements need to be continued.
Źródło:
Archives of Transport; 2023, 65, 1; 56--66
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of Sound Absorbers Based on Open-Cell Foams via Microstructure-Based Modeling
Autorzy:
Trinh, Van-Hai
Nguyen, Thien-Van
Nguyen, Thi-Hai-Nhu
Nguyen, Minh-Tan
Powiązania:
https://bibliotekanauki.pl/articles/31339944.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
monodisperse foam
cellular morphology
transports
sound absorption
equivalent fluid
multiscale simulation
Opis:
Effects of microstructure factors on the acoustic performance of open-cell foams can be characterized numerically by a microstructure-based approach. To this regard, the numerical homogenization approach and the equivalent-fluid theory are employed to study the acoustic behavior of random open-cell foams within their Voronoi tessellation-based Representative Volume Elements (RVE). As a validation step, the numerical predictions are compared with the reference findings to either verify the finite element procedure or demonstrate that the constructed RVE can capture both the local geometrical characteristics and the acoustic macrobehavior of cellular solid foams. It can be seen from the obtained results that the morphological characteristics of open-cell foams could be controlled to achieve the desired sound absorbing behavior. In addition, the analytical expressions, formulating the relationship between the geometry of foam absorbers and their target absorption performance, are established to design sound absorbing foam layers.
Źródło:
Archives of Acoustics; 2022, 47, 4; 501-512
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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