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Wyszukujesz frazę "Aslam, Muhammad" wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Moving Average control charts for Burr X and Inverse Gaussian distributions
    Autorzy:
    Shafqat, Ambreen
    Aslam, Muhammad
    Albassam, Mohammed
    Powiązania:
    https://bibliotekanauki.pl/articles/1181944.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    control chart
    Burr X distribution
    inverse Gaussian distribution
    average run length
    Opis:
    The Burr X and inverse Gaussian (IG) distributions have been considered to design an attribute control chart for time truncated life test with the moving average (MA) scheme w. The presentation of the MA control chart has been estimated in terms of average run length (ARL) by using the Monte Carlo simulation. The ARL is determined for different values of sample sizes, MA statistics size, parameters’ values, and specified average run length. The performance of this new MA attribute control chart has been compared with the usual time truncated control chart for Burr X and IG distributions. The performance of a new control chart is better than that of the existing control chart.
    Źródło:
    Operations Research and Decisions; 2020, 30, 4; 81-94
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A study on exponentiated Gompertz distribution under Bayesian discipline using informative priors
    Autorzy:
    Aslam, Muhammad
    Afzaal, Mehreen
    Bhatti, M. Ishaq
    Powiązania:
    https://bibliotekanauki.pl/articles/1917073.pdf
    Data publikacji:
    2021-12-08
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    exponentiated Gompertz distribution
    loss functions
    informative priors
    Bayes estimators
    posterior risks
    Opis:
    The exponentiated Gompertz (EGZ) distribution has been recently used in almost all areas of human endeavours, starting from modelling lifetime data to cancer treatment. Various applications and properties of the EGZ distribution are provided by Anis and De (2020). This paper explores the important properties of the EGZ distribution under Bayesian discipline using two informative priors: the Gamma Prior (GP) and the Inverse Levy Prior (ILP). This is done in the framework of five selected loss functions. The findings show that the two best loss functions are the Weighted Balance Loss Function (WBLF) and the Quadratic Loss Function (QLF). The usefulness of the model is illustrated by the use of reallife data in relation to simulated data. The empirical results of the comparison are presented through a graphical illustration of the posterior distributions.
    Źródło:
    Statistics in Transition new series; 2021, 22, 4; 101-119
    1234-7655
    Pojawia się w:
    Statistics in Transition new series
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of half-normal model using informative priors under Bayesian structure
    Autorzy:
    Khawar Kiani, Sania
    Aslam, Muhammad
    Bhatti, M. Ishaq
    Powiązania:
    https://bibliotekanauki.pl/articles/18105212.pdf
    Data publikacji:
    2023-09-08
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    informative prior
    squared root inverted gamma distribution (SRIG)
    Bayesian hypothesis testing
    loss functions
    Opis:
    This paper considers properties of half-normal distribution using informative priors under the Bayesian criterion. It employs the squared root inverted gamma, Chi-square and Rayleigh distributions as the prior distribution to construct the Posterior distributions of the respective distributional parameters. Hyperparameters are elicited via prior predictive distribution. The properties of posterior distribution are studied, and their graphs are presented using a real data set. A comprehensive simulation scheme is conducted using informative priors. Bayes estimates are obtained using the loss functions (squared error loss function, modified loss function, quadratic loss function and Degroot loss function). Statistical inferences interval estimates and Bayesian hypothesis testing are presented to demonstrate the usefulness of the study.
    Źródło:
    Statistics in Transition new series; 2023, 24, 4; 19-36
    1234-7655
    Pojawia się w:
    Statistics in Transition new series
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Attribute np control charts using resampling systems for monitoring non-conforming items using exponentiated half logistic distribution
    Autorzy:
    Tanveer, Ammara
    Azam, Muhammad
    Aslam, Muhammad
    Shujaat Navaz, Muhammad
    Powiązania:
    https://bibliotekanauki.pl/articles/406284.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    attribute chart
    time truncation
    process
    statistical distributions
    sampling schemes
    Opis:
    An attribute np control chart has been designed using resampling systems for monitoring non- -conforming items under exponentiated half-logistic distribution. We suppose that lifetime follows exponentiated half-logistic distribution. For the proposed control charts, the optimal parameters and control limits have been obtained. The operational formulas for in-control and out of control average run lengths (ARLs) have been derived. Control constants are established by considering the target in-control ARL at a normal process. The extensive ARL tables are reported for various parameters and shifted values of process parameters. The performance of the proposed control chart is evaluated with several existing charts with regard to ARLs, which empower the presented chart and prove far better for timely detection of assignable causes. A wide range of tables, a real-life example, and simulation study for RGS and MDS are given for a better understanding of the problem.
    Źródło:
    Operations Research and Decisions; 2020, 30, 2; 115-143
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Image encryption based on Chebyshev chaotic map and S8 S-boxes
    Autorzy:
    Hussain, Iqtadar
    Anees, Amir
    Alkhaldi, Ali Hussain
    Aslam, Muhammad
    Siddiqui, Nasir
    Ahmed, Rehan
    Powiązania:
    https://bibliotekanauki.pl/articles/173918.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    image encryption
    chaos
    noise-resistant
    statistical analysis
    key sensitivity
    Opis:
    The encryption of image data is artful as compare to others due to some special characteristics such as entropy, contrast, the correlation between the pixels, intensity, and homogeneity. During encryption process, it is conventionally not easy to manage these characteristics with non-chaotic cryptosystems. Therefore for the sake of strong encryption algorithms, in last decades many cryptographers have presented invulnerable schemes for image encryption based on the chaotic maps. This manuscript aims to propose a strong encryption scheme based on a symmetric group of permutation advanced encryption standard (AES) substitution boxes and modified Chebyshev map. Principally, the secret key depends upon the parameters of Chebyshev map to create confusion in the main image and is encrypted by the scheme made from the S8 AES S-boxes and chaotic map. By this procedure, one can obtain an encrypted image that is entirely twisted. The results of analyses showed that the presented image encryption is strong and invulnerable.
    Źródło:
    Optica Applicata; 2019, 49, 2; 317-330
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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