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1
An Information-Theoretic Alternative to Maximum Likelihood Estimation Method in Ultrastructural Measurement Error Model 
Dergi Makalesi

Dergi Makalesi
Kaynak :
Sobiad Atıf Dizini
Dergi:
Hacettepe Journal of Mathematics and Statistics
Yazar(lar) :
Amjad D. Al-Nasser
Yıl :
2011
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Kaydet Alıntıla
2
L Ranked Set Sampling: A Generalization Procedure for Robust Visual Sampling
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Communications in Statistics - Simulation and Computation
Yayıncı:
Informa UK Limited
Yazar(lar) :
Amjad D. Al-Nasser
Konu :
Modelling and Simulation, Statistics and Probability
Yıl :
2007
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
In this article, a robust ranked set sampling (LRSS) scheme for estimating population mean is introduced. The proposed method is a generalization for many types of ranked set sampling that introduced in the literature for estimating the population mean. It is shown that the LRSS method gives unbiased estimator for the population mean with minimum variance providing that the underlying distribution is symmetric. However, for skewed distributions a weighted mean is given, where the optimal weights is computed by using Shannon's entropy. The performance of the population mean estimator is discussed along with its properties. Monte Carlo comparisons for detecting outliers are made with the traditional simple random sample and the ranked set sampling for some distributions. The results indicate that the LRSS estimator is superior alternative to the existing methods.
DOI : 10.1080/03610910601096510
Anahtar Kelimeler : Outliers, Ranked set sampling, Relative efficiency, Shannon entropy, Visual sampling, Primary 62G35, Secondary 62F07, 94A17
ISSN: 0361-0918
Sayı: 1
Cilt: 36
Sayfa: 33-43
3
Two steps generalized maximum entropy estimation procedure for fitting linear regression when both covariates are subject to error
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Journal of Applied Statistics
Yayıncı:
Informa UK Limited
Yazar(lar) :
Amjad D. Al-Nasser
Konu :
Statistics, Probability and Uncertainty, Statistics and Probability
Yıl :
2014
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
This paper presents a procedure utilizing the generalized maximum entropy (GME) estimation method in two steps to quantify the uncertainty of the simple linear structural measurement error model parameters exactly. The first step estimates the unknowns from the horizontal line, and then the estimates were used in a second step to estimate the unknowns from the vertical line. The proposed estimation procedure has the ability to minimize the number of unknown parameters in formulating the GME system within each step, and hence reduce variability of the estimates. Analytical and illustrative Monte Carlo simulation comparison experiments with the maximum likelihood estimators and a one-step GME estimation procedure were presented. Simulation experiments demonstrated that the two steps estimation procedure produced parameter estimates that are more accurate and more efficient than the classical estimation methods. An application of the proposed method is illustrated using a data set gathered from the Centre for Integrated Government Services in Delma Island UAE to predict the association between perceived quality and the customer satisfaction.
DOI : 10.1080/02664763.2014.888544
Anahtar Kelimeler : structural measurement error model, generalized maximum entropy, perceived quality, customer satisfaction
ISSN: 0266-4763
Sayı: 8
Cilt: 41
Sayfa: 1708-1720
4
Median ranked acceptance sampling plans for exponential distribution
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Afrika Matematika
Yazar(lar) :
Fatima Gogah , Amjad D. Al-Nasser
Konu :
General Mathematics
Yıl :
2018
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
We develop a ranked acceptance sampling plan by attribute for exponential distribution assuming that the life test is truncated at a pre-assigned time. Two main requirements are essential for the proposed ranked sampling plans; namely; the life times of the test units are assumed to follow the exponential distribution; and the data are selected by using a free cost sampling method, the median ranked set sampling scheme from a large lot. The main advantage of using the median rank set sampling is to reduce producer’s risk, and it is one of the ranked scheme that produces a judgment order statistics that are mutually independent and identically distributed random variables to meet the binomial theory assumptions. The distribution function characterization under the median ranked set sampling scheme is derived assuming that the set size is known; then the minimum sample size necessary to ensure the specified average life are obtained and the operating characteristic values of the sampling plans based on the ranked samples and producer’s risk are presented. A comparisons with sampling plan based on simple random sampling and an illustrative example are given.
DOI : 10.1007/s13370-018-0555-7
Anahtar Kelimeler : Median ranked set sampling, Acceptance sampling plans, Exponential distribution, Operating characteristic function value, Produceru2019s risk, Consumeru2019s risk, 60D05, 62G30
ISSN: 1012-9405 2190-7668
Sayı: 3-4
Cilt: 29
Sayfa: 477-497
5
Repeated measures and longitudinal data analysis using higher-order entropies
Dergi Makalesi

Dergi Makalesi
Kaynak :
Wiley Online Library
Dergi:
Statistica Neerlandica
Yazar(lar) :
Mohammad Al-Rawwash , Amjad D. Al-Nasser
Konu :
Statistics, Probability and Uncertainty, Statistics and Probability
Yıl :
2012
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
This paper implements the generalized maximum entropy (GME) method in longitudinal data setup to investigate the regression para meters and correlation among the repeated measurements. We derive the GME system using Shannon classical entropy as well as some higher‐order entropies assuming an autoregressive correlation structure. This method is illustrated using two simulated examples to study the effect of changing the support range and compare the performance of the GME approach with the classical estimation methods.
DOI : 10.1111/j.1467-9574.2012.00534.x
ISSN: 0039-0402
Sayı: 1
Cilt: 67
Sayfa: 100-111
6
Comparing generalised maximum entropy and partial least squares methods for structural equation models
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Journal of Nonparametric Statistics
Yayıncı:
Informa UK Limited
Yazar(lar) :
Enrico Ciavolino , Amjad D. Al-Nasser
Yıl :
2009
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
The generalised maximum entropy (GME) method is presented for estimating structural equation models, where a real data set of the Service & Motor Vehicle Industry in Sweden is used to show the implementation of the method. Monte Carlo simulation comparisons are also made between GME and partial least squares (PLS) methods in the presence of messy data. Three cases are considered: outliers, missing data and multicollinearity. It is shown that this method can be considered a valid alternative to the conventional method of PLS, where the results of GME, in terms of mean squared error, outperform the PLS results in some respects.
DOI : 10.1080/10485250903009037
Anahtar Kelimeler : generalised maximum entropy, partial least squares, structural equation models, messy data, customer satisfaction index, 62B10 information-theoretic topics, 94A17 measures of information, entropy, 62G05 estimation, 62P25 applications to social sciences
ISSN: 1048-5252
Sayı: 8
Cilt: 21
Sayfa: 1017-1036
7
Acceptance sampling plans from truncated life test based on Tsallis q-exponential distribution
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Journal of Applied Statistics
Yayıncı:
Informa UK Limited
Yazar(lar) :
Amjad D. Al-Nasser , Mohammed Obeidat
Konu :
Statistics, Probability and Uncertainty, Statistics and Probability
Yıl :
2019
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
In this study, we propose a new single acceptance sampling plan from truncated life test assuming that the quality characteristics follow the Tsallis q-exponential distribution. The proposed plan is given, and then we derived the operation characteristics function and calculate the optimal sample size and producer’'s risk for some given parameter values to measure the performance of this plan. Also, a comparative study with other sampling plan is discussed to show the benefit of the proposed plan, and real data analysis is given to illustrate the applicability of the proposed plan in the industry.
DOI : 10.1080/02664763.2019.1650254
Anahtar Kelimeler : Acceptance sampling plan, Tsallis q-exponential distribution, entropy, operating characteristic function, 90B25, 62N05, 94A17
ISSN: 0266-4763
Sayı: 4
Cilt: 47
Sayfa: 685-697
8
EXTREME RANKED REPETITIVE SAMPLING CONTROL CHARTS
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
Pesquisa Operacional
Yazar(lar) :
Amjad D. Al-Nasser , Enrico Ciavolino , Amer Al-Omari
Amjad D. Al-Nasser
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet Alıntıla
ABSTRACT In this paper, we proposed a new ranked data control chart using repetitive sampling criterion to increase the performance of detecting any shift in mean process. For the comparisons target, the average run length (ARL) of the proposed control chart based on repetitive extreme ranked set sampling computed using exact and estimated parameters. The results showed that the ARL affected negatively by the parameter estimation. Moreover, the performances of the proposed control chart is evaluated and compared with similar control chart that obtained by using different sampling schemes such as the simple random sampling, ranked set sampling, extreme ranked set sampling and repetitive ranked set sampling.. The results showed that the ranked data based control chart outperform the classical control chart in terms of the ARL.
DOI : 10.1590/0101-7438.2020.040.00226135
Anahtar Kelimeler : extreme ranked set sampling, ranked set sampling, repetitive sampling, shewhart control chart, average run length
Cilt: 40
Sınıflandırma :
9
Ratio estimation using multistage median ranked set sampling approach
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Journal of Statistical Theory and Practice
Yazar(lar) :
Amer Ibrahim Al-Omari , Amjad D. Al-Nasser
Konu :
Statistics and Probability
Yıl :
2018
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
DOI : 10.1080/15598608.2018.1425168
ISSN: 1559-8608 1559-8616
Sayı: 3
Cilt: 12
Sayfa: 512-529
10
Information Theoretic Weighted Mean Based on Truncated Ranked Set Sampling
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Journal of Statistical Theory and Practice
Yazar(lar) :
Amjad D. Al-Nasser , Amer I. Al-Omari
Konu :
Statistics and Probability
Yıl :
2014
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
DOI : 10.1080/15598608.2014.897278
ISSN: 1559-8608 1559-8616
Sayı: 2
Cilt: 9
Sayfa: 313-329
11
Robust extreme ranked set sampling
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Journal of Statistical Computation and Simulation
Yayıncı:
Informa UK Limited
Yazar(lar) :
Amjad D. Al-Nasser , Ahmed Bani Mustafa
Konu :
Statistics, Probability and Uncertainty, Modelling and Simulation, Statistics and Probability, Applied Mathematics
Yıl :
2009
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
In this paper, a robust extreme ranked set sampling (RERSS) procedure for estimating the population mean is introduced. It is shown that the proposed method gives an unbiased estimator with smaller variance, provided the underlying distribution is symmetric. However, for asymmetric distributions a weighted mean is given, where the optimal weights are computed by using Shannon's entropy. The performance of the population mean estimator is discussed along with its properties. Monte Carlo simulations are used to demonstrate the performance of the RERSS estimator relative to the simple random sample (SRS), ranked set sampling (RSS) and extreme ranked set sampling (ERSS) estimators. The results indicate that the proposed estimator is more efficient than the estimators based on the traditional sampling methods.
DOI : 10.1080/00949650701683084
Anahtar Kelimeler : extreme ranked set sampling, outliers, Shannon's entropy
ISSN: 0094-9655
Sayı: 7
Cilt: 79
Sayfa: 859-867
Sınıflandırma :
12
On MxG1G21 queue with optional re-service
Dergi Makalesi

Dergi Makalesi
Kaynak :
Science Direct
Dergi:
Applied Mathematics and Computation
Yayıncı:
Elsevier
Yazar(lar) :
Kailash C Madan , Amjad D Al-Nasser , Abedel-Qader Al-Masri
Yıl :
2004
Amjad D Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
We study a single server queue with batch arrivals and two types of heterogeneous service with different general (arbitrary) service time distributions. The server provides either type of service to customers, one by one, on a first come, first served basis. Just before a service starts, a customer has the option to choose either type of service after completion of which the customer may leave the system or may opt for re-service of the service taken by him. We obtain steady-state results in explicit and closed form in terms of the probability generating functions for the number of customers in the queue and the system, the average number of customers and the average waiting time in the queue as well as the system. Some special cases of interest are discussed and some known results have been derived. A numerical illustration is provided.
DOI : 10.1016/s0096-3003(03)00545-9
Anahtar Kelimeler : Poisson arrivals, Two types of general heterogeneous service, Optional re-service, Steady-state queue size distribution, Average waiting time
ISSN: 0096-3003
Sayı: 1
Cilt: 152
Sayfa: 71-88
Sınıflandırma :
13
A size-biased Ishita distribution and application to real data
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Quality & Quantity
Yazar(lar) :
Amer Ibrahim Al-Omari , Amjad D. Al-Nasser , Enrico Ciavolino
Konu :
General Social Sciences, Statistics and Probability
Yıl :
2018
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
The present paper offers a new extension to the Ishita distribution called Size-Biased Ishia distribution (SBID). Various structural statistical properties of this distribution are derived such as the jth moment, moment generating function, the coefficients of variation, skewness and kurtosis. Also, the distribution of order statistics, harmonic mean, mode, reliability analysis, maximum likelihood estimation are provided, as well as the Fisher’s information, generalized and Renyi entropies are derived. The main advantage of using sized-based distributions appears when the sample are recorded with unequal probabilities. Accordingly, the superiority of the SBI distribution is illustrated to ball bearings data. It is shown that the SBID is the most appropriate model for this data set as compared to Rama distribution, Ishita distribution and Marshall–Olkin Esscher Transformed Laplace distribution. We believe that the SBID is an alternative distribution to lifetime data analysis.
DOI : 10.1007/s11135-018-0765-y
Anahtar Kelimeler : Ishita distribution, Size-biased Garima distribution, Order statistics, Hazard rate function, Reliability function, Generalized and Renyi entropies
ISSN: 0033-5177 1573-7845
Sayı: 1
Cilt: 53
Sayfa: 493-512
14
Acceptance sampling plan based on truncated life tests for exponentiated fréchet distribution
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Journal of Statistics and Management Systems
Yayıncı:
Informa UK Limited
Yazar(lar) :
Amjad D. Al-Nasser , Amer I. Al-Omari
Yıl :
2013
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
In this paper, exponentiated Fréchet distribution is considered as a model for a life time random variable when the life test is truncated at a pre-assigned time. The operating characteristic functions values of the suggested sampling plans and the corresponding producer's risk are obtained.
DOI : 10.1080/09720510.2013.777571
Anahtar Kelimeler : Acceptance sampling plan, Truncated life test, Operating characteristics, Consumer's risk, Exponentiated Fréchet distribution
ISSN: 0972-0510
Sayı: 1
Cilt: 16
Sayfa: 13-24
15
New Mixed Ranked Set Sampling Variations
Dergi Makalesi

Dergi Makalesi
Kaynak :
Wiley Online Library
Yazar(lar) :
Ahmad A. Hanandeh , Amjad D. Alu2010Nasser , Amer I. Alu2010Omari
Yıl :
2021
Amjad D. Al‐Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
Building efficient sampling procedures to provide more accurate results with small sample sizes is one of the main goals in sampling surveys. The ranked set sampling (RSS) is a well‐known procedure for selecting representative samples and improving parametric estimation by employing ranking on observations. In order to have a more efficient sampling procedure, new sampling procedures are proposed and investigated in this article. The main focus of this article is to enhance the mean estimation of the study population using the proposed RSS procedures. The performance of the proposed sampling procedures is compared with their competitors in RSS, double RSS (DRSS), extreme RSS (ERSS), and double extreme RSS (DERSS) by conducting simulation studies for numerous (symmetric and asymmetric) distributions. An application to a real dataset is also considered to exemplify the achievement of the proposals. Numerical simulations show that the new modified estimators are unbiased for the population mean for symmetric distributions and they outperform their competitors in most of the cases investigated in this article.
DOI : 10.1002/sta4.417
ISSN: 2049-1573
16
DEVELOPING SINGLE-ACCEPTANCE SAMPLING PLANS BASED ON A TRUNCATED LIFETIME TEST FOR AN ISHITA DISTRIBUTION
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak :
Directory of Open Access Journals (DOAJ)
Dergi:
Statistics in Transition
Yazar(lar) :
Amjad D. Al-Nasser , Amer I. Al-Omari , Ahmed Bani-Mustafa , Khalifa Jaber
Yıl :
2018
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
DOI : 10.21307/stattrans-2018-022
Anahtar Kelimeler : acceptance sampling plans, Ishita distribution, producers risk, consumers risk, operating characteristics, truncated lifetime
Cilt: 19
Sayı: 3
Sınıflandırma :
17
Attribute control chart for some popular distributions
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Communications in Statistics - Theory and Methods
Yayıncı:
Informa UK Limited
Yazar(lar) :
Ambreen Shafqat , Jaffer Hussain , Amjad D. Al-Nasser , Muhammad Aslam
Konu :
Statistics and Probability
Yıl :
2017
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
The binomial distribution is often used to display attribute control data. In this paper, a statistical model is settled for attribute control chart under truncated life test. By Burr X & XII, inverse Gaussian (IG), and exponential lifetime-truncated distributions, a Shewhart-type attribute control chart is built to display the data. The performance of attributed control chart constructed on truncated life test is evaluated by average run length, which compares the performance of all distributions. Our study arranges that IG is better distribution among all.
DOI : 10.1080/03610926.2017.1335414
Anahtar Kelimeler : average run length, Burr X and XII distributions, Control charts, Inverse Gaussian, Exponential distribution, Time-truncated life test.
ISSN: 0361-0926
Sayı: 8
Cilt: 47
Sayfa: 1978-1988
18
HRM and knowledge-transfer: a micro analysis in a Middle Eastern emerging market
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
The International Journal of Human Resource Management
Yayıncı:
Informa UK Limited
Yazar(lar) :
Washika Haak-Saheem , Tamer K. Darwish , Amjad D. Al-Nasser
Konu :
Management of Technology and Innovation, Strategy and Management, Organizational Behavior and Human Resource Management
Yıl :
2016
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
This is a study surrounding the interplay between Human Resource Management (HRM) and knowledge transfer within an emerging institutional petro-state. It seeks to link HRM and knowledge transfer through individual-level mechanisms in response to the recent calls for more research on micro-foundations. Our findings provide empirical evidence for HRM-related factors influencing knowledge exchange in a sample of 815 employees in the national context of the UAE. We found that individual-level perceptions and extrinsic motivation have a positive impact on knowledge exchange; however, we found evidence to suggest only an indirect effect of individual perceptions of organisational commitment to knowledge exchange, via individual intrinsic motivation and social interaction. Unlike some existing accounts from the Western world, individual perceptions of organisational commitment to knowledge sharing had no direct positive impact on knowledge exchange an issue that may be ascribed to the distinct institutional setting of the UAE. This paper adds to the existing literature on HRM and knowledge exchange by bringing to bear new evidence from a Middle Eastern emerging market setting an area thus far relatively neglected in the literature.
DOI : 10.1080/09585192.2016.1138499
Anahtar Kelimeler : emerging markets, extrinsic motivation, HRM, institutions, intrinsic motivation, knowledge exchange, organisational commitment
ISSN: 0958-5192
Sayı: 19
Cilt: 28
Sayfa: 2762-2791
19
SARS-CoV-2 and Coronavirus Disease 2019: What We Know So Far
Dergi Makalesi

Dergi Makalesi
Open Access
Kaynak 1:
MDPI
Kaynak 2:
Directory of Open Access Journals (DOAJ)
Dergi:
Pathogens
Yayıncı:
MDPI AG
Yazar(lar) :
Firas A. Rabi , Mazhar S. Al Zoubi , Ghena A. Kasasbeh , Dunia M. Salameh , Amjad D. Al-Nasser
Yıl :
2020
Amjad D. Al-Nasser
Tam Metin
Kaydet Alıntıla
In December 2019, a cluster of fatal pneumonia cases presented in Wuhan, China. They were caused by a previously unknown coronavirus. All patients had been associated with the Wuhan Wholefood market, where seafood and live animals are sold. The virus spread rapidly and public health authorities in China initiated a containment effort. However, by that time, travelers had carried the virus to many countries, sparking memories of the previous coronavirus epidemics, severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS), and causing widespread media attention and panic. Based on clinical criteria and available serological and molecular information, the new disease was called coronavirus disease of 2019 (COVID-19), and the novel coronavirus was called SARS Coronavirus-2 (SARS-CoV-2), emphasizing its close relationship to the 2002 SARS virus (SARS-CoV). The scientific community raced to uncover the origin of the virus, understand the pathogenesis of the disease, develop treatment options, define the risk factors, and work on vaccine development. Here we present a summary of current knowledge regarding the novel coronavirus and the disease it causes.
DOI : 10.3390/pathogens9030231
ISSN: 2076-0817
Sayı: 3
Cilt: 9
Sayfa: 231
Sınıflandırma :
20
An approach to setting up a national customer satisfaction index: the Jordan case study
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Journal of Applied Statistics
Yayıncı:
Informa UK Limited
Yazar(lar) :
Amjad D. Al-Nasser , Mohammad Y. Al-Rawwash , Anas S. Alakhras
Konu :
Statistics, Probability and Uncertainty, Statistics and Probability
Yıl :
2011
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
The aim of this paper was to develop a national customer satisfaction index (CSI) in Jordan and to derive its theory using generalized maximum entropy. During the course of this research, we conducted two different surveys to complete the framework of this CSI. The first one is a pilot study conducted based on a CSI basket in order to select the main factors that comprise the Jordanian customer satisfaction index (JCSI). Based on two different analyses, namely nonlinear principal component analysis and factor analysis, the explained variances in the first and second dimensions were 50.32 and 16.99% respectively. Also, Cronbach coefficients α in the first and second dimensions were 0.923 and 0.521, respectively. The results of this survey suggests the inclusion of loyalty, complaint, expectation, image and service quality as the main CS factors of our proposed model. The second study is a practical implementation conducted on the Vocational Training Corporation in order to evaluate the proposed JCSI. The results indicated that the suggested components of the proposed model are significant and form a good fitted model. We used the comparative fit index and the normed fit index as goodness-of-fit measures to evaluate the effectiveness of our proposed model. Both measures indicated that the proposed model is a promising one.
DOI : 10.1080/02664763.2010.545107
Anahtar Kelimeler : Customer Satisfaction Index, SERVQUAL, nonlinear principal component analysis, generalized maximum entropy, structural equations models
ISSN: 0266-4763
Sayı: 9
Cilt: 38
Sayfa: 1977-1993
21
Using decision trees to explore the association between the length of stay and potentially avoidable readmissions: A retrospective cohort study
Dergi Makalesi

Dergi Makalesi
Kaynak :
Taylor and Francis
Dergi:
Informatics for Health and Social Care
Yayıncı:
Informa UK Limited
Yazar(lar) :
Mohammad S. Alyahya , Heba H. Hijazi , Hussam A. Alshraideh , Amjad D. Al-Nasser
Yıl :
2017
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
Background: There is a growing concern that reduction in hospital length of stay (LOS) may raise the rate of hospital readmission. This study aims to identify the rate of avoidable 30-day readmission and find out the association between LOS and readmission. Methods: All consecutive patient admissions to the internal medicine services (n = 5,273) at King Abdullah University Hospital in Jordan between 1 December 2012 and 31 December 2013 were analyzed. To identify avoidable readmissions, a validated computerized algorithm called SQLape was used. The multinomial logistic regression was firstly employed. Then, detailed analysis was performed using the Decision Trees (DTs) model, one of the most widely used data mining algorithms in Clinical Decision Support Systems (CDSS). Results: The potentially avoidable 30-day readmission rate was 44%, and patients with longer LOS were more likely to be readmitted avoidably. However, LOS had a significant negative effect on unavoidable readmissions. Conclusions: The avoidable readmission rate is still highly unacceptable. Because LOS potentially increases the likelihood of avoidable readmission, it is still possible to achieve a shorter LOS without increasing the readmission rate. Moreover, the way the DT model classified patient subgroups of readmissions based on patient characteristics and LOS is applicable in real clinical decisions.
DOI : 10.1080/17538157.2016.1269105
Anahtar Kelimeler : Avoidable readmission, clinical decision support systems, decision trees (DTs), length of stay (LOS)
ISSN: 1753-8157
Sayı: 4
Cilt: 42
Sayfa: 361-377
Sınıflandırma :
22
Information theoretic approach for constructing a super data envelopment analysis
Dergi Makalesi

Dergi Makalesi
Kaynak :
Emerald Publishing
Dergi:
Asian Journal on Quality
Yayıncı:
Emerald Publishing
Yazar(lar) :
Amjad D. Alu2010Nasser , Abdel Rahim Y. Alu2010Atrash
Konu :
Managing Quality
Yıl :
2011
Amjad D. Al‐Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
The purpose of this paper is to provide a robust statistical procedure for evaluating and measuring the relative efficiency of multiple decision‐making units. This robust approach is based on the generalized maximum entropy principle. Design/methodology/approach Information‐theoretic estimation approach is employed in this paper and a comparison is made with the classical relative efficiency (CCR) by using a non‐parametric bootstrap simulation. A real data application on the research performance of faculty members at Yarmouk University is presented. Findings Results indicate that the relative efficiency based on the generalized maximum entropy estimation approach is more accurate, costs less and is more efficient than the CCR relative efficiency. Research limitations/implications Owing to use of Shannon's entropy formulation, it is still critical whether the results also hold with cross entropy or a higher order entropy formulation for modeling additive, multiplicative or partial relative efficiency. Originality/value A super data envelopment analysis has been introduced for finding superior decision‐making units (DMU) by solving only one nonlinear programming system, which could be considered as a flexible tool for modeling multiple input‐output DMU.
DOI : 10.1108/15982681111140543
Anahtar Kelimeler : Data analysis, Decisionu2010making units, Decision support systems, Academic staff, Research work
ISSN: 1598-2688
Cilt: 12
Sayı: 1
Sayfa: 54-66
Sınıflandırma :
23
Customer satisfaction and service domains: a further development of PROSERV
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Quality & Quantity
Yazar(lar) :
Enrico Ciavolino , Gloria Lagetto , Andrea Montinari , Amjad D. Al-Nasser , Amer I. Al-Omari , Matteo J. Zaterini , Sergio Salvatore
Konu :
General Social Sciences, Statistics and Probability
Yıl :
2019
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
This paper aims to represent that levels of customer satisfaction of tourist accommodation are an important prerequisite when the goal is building a loyal relationship with this type of facility. The research involved 239 participants (% 50 women) who have used tourist facilities during the last 2 years. The data used in the research were collected through the administration of a questionnaire: Prosumership Service Quality Model (PROSERV-Q). The methodology utilized to analyse data is the multi-group analysis based on Partial Least Squares Path Modelling (PLS-PM) with high order constructs. The results show that in the PROSERV model the level of global satisfaction affect the attitude of customer loyalty towards the tourism services.
DOI : 10.1007/s11135-019-00888-4
Anahtar Kelimeler : Customer satisfaction, Loyalty strategy in tourism, Hospitality, Tourist accommodation, Partial least squares, Path modelling
ISSN: 0033-5177 1573-7845
Sayı: 5-6
Cilt: 54
Sayfa: 1429-1444
24
Sentiment analysis of expectation and perception of MILANO EXPO2015 in twitter data: a generalized cross entropy approach
Dergi Makalesi

Dergi Makalesi
Kaynak :
Springer Link
Dergi:
Soft Computing
Yazar(lar) :
Angelo Corallo , Laura Fortunato , Andrea Massafra , Paola Pasca , Mario Angelelli , Mike Hobbs , Amjad D. Al-Nasser , Amer I. Al-Omari , Enrico Ciavolino
Konu :
Geometry and Topology, Theoretical Computer Science, Software
Yıl :
2019
Amjad D. Al-Nasser
Yayıncı Web Sitesi
Tam Metin
Kaydet Alıntıla
In this paper, data concerning MILANO EXPO2015 is collected from the official twitter page of the event before and after its opening. In order to extract a semi-supervised ontology and to evaluate the global sentiment around the event, a variety of language processing techniques has been applied on the collected “tweets”: Latent Semantic Analysis, sentiment polarity tracking, along with gap analysis has allowed the semantic evaluation of users’ opinions. Moreover, the generalized cross entropy approach has been applied for the first time on web data, adding prior information on the effect of semantic classes on the global sentiment, improving accuracy and adding detail to the analysis.
DOI : 10.1007/s00500-019-04368-7
Anahtar Kelimeler : Sentiment analysis, General cross entropy, Milano EXPO2015, Latent semantic analysis, Gap analysis, Twitter
ISSN: 1432-7643 1433-7479
Sayı: 18
Cilt: 24
Sayfa: 13597-13607

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