2020/Vol. 30/No. 4

Impatient customers in Markovian queue with Bernoulli feedback and waiting server under variant working vacation policy
Amina Angelika Bouchentouf, Lahcene Yahiaoui, Mokhtar Kadi, Shakir Majid
    abstract
Intuitionistic fuzzy sets in assessing the marginal value of the elements of a multigraph
Barbara Gładysz, Jacek Mercik
    abstract
From expected utility theory to prospect theory: tracking down the experimental path after forty years
Sławomir Kalinowski
    abstract
On the law of the iterated logarithm in hybrid multiphase queueing systems
Saulius Minkevičius
    abstract
Improving managerial decisions in health care sector: application of Promethee II method in public hospitals
Katarzyna Miszczyńska
    abstract
Moving Average control charts for Burr X and Inverse Gaussian distributions
Ambreen Shafqat, Muhammad Aslam, Mohammed Albassam
    abstract
Stability of hospital rankings
Agata Sielska
    abstract

2020/Vol. 30/No. 3

Simulation modelling for predicting hospital admissions and bed utilisation
Maria Hajłasz, Bożena Mielczarek
    abstract
Governmental combat of migration between competing terrorist organisations
Kjell Hausken
    abstract
Centrality-oriented causality. A study of EU agricultural subsidies and digital developement in Poland
Daniel Kosiorowski, Jerzy P. Rydlewski
    abstract
Assessment of strategic decisions of enterprises operating in international marketing in the era of modern technologies
Małgorzata Łęgowik-Małolepsza
    abstract
Using individual and common reference points to measure the performance of alternatives in multiple criteria evaluation
Ewa Roszkowska, Marzena Filipowicz-Chomko, Tomasz Wachowicz
    abstract
Inventory model for deteriorating items with negative exponential demand, probabilistic deterioration and fuzzy lead time under partial back logging
Nabendu Sen, Sumit Saha
    abstract
The level of omnichannel use in Polish MSMEs
Katrzyna Szymczyk
    abstract

2020/Vol. 30/No. 2

The optimization of insurance contracts on the viatical market
Joanna Dębicka, Stanisław Heilpern
    abstract
Personalisation of production in the era of Industry 4.0 as a challenge for inventory management in small and medium-sized production enterprises
Sandra Grabowska
    abstract
Game theoretic analysis of ideologically biased clickbait or fake news and real news
Kjell Hausken
    abstract
Information gap in value propositions of business models of language schools
Zbigniew Malara, Paweł Ziembicki
    abstract
Satisfaction of the condition of order preservation. A simulation study
Jiří Mazurek, Konrad Kułakowski
    abstract
The extention rank ordering criteria weighting methods in fuzzy enviroment
Ewa Roszkowska
    abstract
Attribute np control charts using resampling systems for monitoring non-conforming items under exponentiated half-logistic distribution
Ammara Tanveer, Muhammad Azam, Muhammad Aslam, Muhammad Shujaat Navaz
    abstract

2020/Vol. 30/No. 1

The domination over time and its discretisation
Nazanin Abbasnezhad, Javad Mehri-Takmeh, Javad Vakili
    abstract
A fuzzy approach to multi-objective mixed integer linear programming model for multi-echelon closed-loop supply chain with multi-product multi-time-period
Sema Akin Bas, Beyza Ahlatcioglu Ozkok
    abstract
Risk estimation and decision making in management (in selected areas of science)
Tadeusz Galanc, Wiktor Kołwzan, Jerzy Pieronek, Agnieszka Skowronek-Grądziel
    abstract
Application of fuzzy programming techniques to solve solid transportation problem with additional constraints
Sharmistha Halder (Jana), Biswapati Jana
    abstract
Goal programming approach for solving heptagonal fuzzy transportation problem under budgetry constraint
Hamiden Abd El-Wahed Khalifa
    abstract
Assessment of mixed network processes with shared inputs and undesirable factors
Maryam Nematizadeh, Alireza Amirteimoori, Sohrab Kordrostami, Mohsen Vaez-Ghasemi
    abstract
On the binary classification problem in discriminant analysis using linear programming methods
Michael O. Olusola, Sydney I. Onyeagu
    abstract