Response Surface Methodology is widely used in the optimization of industrial processes and products that depend on several experimental variables. One of the most tested and efficient second-order Re...Journal of Mathematics and Statistics, Published online: 2022-12-08; doi:10.3844/jmssp.2022.196.2072022-12-08 DOI: 10.3844/jmssp.2022.196.207
From the studies of HIV/AIDS transmission and treatment dynamicsusing mathematical modeling, literature reviews have shown that attention hadnot been given to the behavioral attitude of screen-aware i...Journal of Mathematics and Statistics, Published online: 2022-11-24; doi:10.3844/jmssp.2022.176.1952022-11-24 DOI: 10.3844/jmssp.2022.176.195
Multivariate probit models have been explored foranalyzing longitudinal ordinal data. However, the inherent identification issuein multivariate probit models requires the covariance matrix of the unde...Journal of Mathematics and Statistics, Published online: 2022-11-14; doi:10.3844/jmssp.2022.163.1752022-11-14 DOI: 10.3844/jmssp.2022.163.175
Typetheory plays an important role in the foundations of mathematics as a frameworkfor formalizing mathematics and a base for proof assistants providingsemi-automatic proof checking and construction. ...Journal of Mathematics and Statistics, Published online: 2022-10-29; doi:10.3844/jmssp.2022.148.1622022-10-29 DOI: 10.3844/jmssp.2022.148.162
Thisstudy considered the Ruin problem with an income process with stationaryindependent increments. The characterization is obtained which is general forthe probability of r(y), that the asset of a fi...Journal of Mathematics and Statistics, Published online: 2022-10-08; doi:10.3844/jmssp.2022.143.1472022-10-08 DOI: 10.3844/jmssp.2022.143.147
For square contingency tables, asymmetry of conditional probability in part of the off-diagonal cells isconsidered with respect to the main diagonal. A measure is proposed torepresent the degree of de...Journal of Mathematics and Statistics, Published online: 2022-10-04; doi:10.3844/jmssp.2022.138.1422022-10-04 DOI: 10.3844/jmssp.2022.138.142
Composite Indicator is considered themathematical aggregation which has wide usage for monitoring performances,conducting benchmarks, analyzing policies, and communicating publicly. HumanDevelopment I...Journal of Mathematics and Statistics, Published online: 2022-09-26; doi:10.3844/jmssp.2022.115.1332022-09-26 DOI: 10.3844/jmssp.2022.115.133
Let U be a finite set and X a family of nonempty subsets of U,which is closed under unions. We establish a connection between Frankl'sconjecture and equipollence sets, in which a complementary ...Journal of Mathematics and Statistics, Published online: 2022-09-21; doi:10.3844/jmssp.2022.134.1372022-09-21 DOI: 10.3844/jmssp.2022.134.137
Mathematics is one of the important subjects inschool that can be used to measure a student's ability to learn and understandscientific equations. This study is done to determine the best method ...Journal of Mathematics and Statistics, Published online: 2022-09-09; doi:10.3844/jmssp.2022.101.1052022-09-09 DOI: 10.3844/jmssp.2022.101.105
This study aimed todetermine the probability of fatty liver, hepatomegaly, and liver size ≥2SDwith age in each category of BMI percentile. It also aimed to investigate therelationship between GFR, B...Journal of Mathematics and Statistics, Published online: 2022-09-09; doi:10.3844/jmssp.2022.106.1142022-09-09 DOI: 10.3844/jmssp.2022.106.114
The time-series Moving Average (MA) model is a nonlinear model; see, for example. For traditional Least Squares (LS) fits, there are several algorithms to use for computing its fit. Since the model is...Journal of Mathematics and Statistics, Published online: 2022-07-28; doi:10.3844/jmssp.2022.87.1002022-07-28 DOI: 10.3844/jmssp.2022.87.100
In this article, the spectral theory is considered, we study the spectral families and their correspondence to the operators on the reflexive Banach spaces; assume A is a well-bounded operator on refl...Journal of Mathematics and Statistics, Published online: 2022-07-06; doi:10.3844/jmssp.2022.78.862022-07-06 DOI: 10.3844/jmssp.2022.78.86
This study is devoted to solving the Hopf algebraic structure problem associated with the Fock realization of the (p, q)-square Heizenberg white noise algebra based on the two-parameter deformations o...Journal of Mathematics and Statistics, Published online: 2022-06-15; doi:10.3844/jmssp.2022.65.702022-06-15 DOI: 10.3844/jmssp.2022.65.70
The dreaded COVID-19 is a communicable respiratory disease caused by a new strain of coronavirus that causes illness in humans. A study of the transmission dynamics of the disease is essential in the ...Journal of Mathematics and Statistics, Published online: 2022-06-06; doi:10.3844/jmssp.2022.49.642022-06-06 DOI: 10.3844/jmssp.2022.49.64
In this study, the transient analysis of the M/M/C queueing system has been made under the provision of servers' single vacation and loss of impatient customers. Customers arrive in the system in...Journal of Mathematics and Statistics, Published online: 2022-04-19; doi:10.3844/jmssp.2022.36.482022-04-19 DOI: 10.3844/jmssp.2022.36.48
Developing and increasing the effectiveness of any system (university system) depends on continuous evaluation and improvement using quantitative methods based on quantitative measurement and efficien...Journal of Mathematics and Statistics, Published online: 2022-03-19; doi:10.3844/jmssp.2022.27.352022-03-19 DOI: 10.3844/jmssp.2022.27.35
In this study model of particle motion on a three-dimensional lattice is created using discrete random walk with small steps. A probability space of the particle trajectories is rigorously constructed...Journal of Mathematics and Statistics, Published online: 2022-03-18; doi:10.3844/jmssp.2022.16.262022-03-18 DOI: 10.3844/jmssp.2022.16.26
Nonlinear conjugate gradient methods for unconstrained optimization problems are used in many aspects of theoretical and applied sciences. They are iterative methods, so at any iteration a step length...Journal of Mathematics and Statistics, Published online: 2022-03-14; doi:10.3844/jmssp.2022.11.152022-03-14 DOI: 10.3844/jmssp.2022.11.15
Financial market participants often speculate on how markets would behave in the light of certain information at hand. This speculation contributes to volatility within the financial market and conseq...Journal of Mathematics and Statistics, Published online: 2022-01-18; doi:10.3844/jmssp.2022.1.102022-01-18 DOI: 10.3844/jmssp.2022.1.10
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