Volume 19 Issue 2
Published: 2025-06-25
Contents
Research Paper
Locally weighted regression for sunspots estimation and prediction
Ibtehal Faker Al-Dean Fadel, Muzahem Al-Hashimi,
Locally weighted regression (LOESS) is a modern non-parametric regression method designed for treating cases where classical procedures are not highly efficient or cannot applied efficiently....
Heuristic Approaches for Solving bi-objective Single Machine Scheduling Problems
Ayad Ramadan, Hawzhin Ahmad Salh,
In this research paper, n jobs have to be scheduled on one-machine to minimize the sum of maximum earliness and maximum tardiness. We solved a series of bi-criteria scheduling problems that related...
Use The Coiflets and Daubechies Wavelet Transform To Reduce Data Noise For a Simple Experiment
Mahmood M Taher, Sabah Manfi Redha,
In this research, a simple experiment in the field of agriculture was studied, in terms of the effect of out-of-control noise as a result of several reasons, including the effect of environmental...
Statistical Analysis of Ordinal Response Variable: A Comparative Study-
Liqaa Yaseen Alhamdany, Zaid Tarik Al-Khaledi,
Response variables in biological phenomena vary between three types: numerical response variables, ordinal categorical response variables, and nominal categorical response variables. In statistical...
Application of Poisson's Hierarchical Regression Model to the Deaths of Covid-19 in Mosul City Hospitals
Ban Al ani, Mahmmood Altai,
This research deals with the study of the partial hierarchical Poisson regression model (with a random intercept), where this model is one of the most important models widely applied in analyzing...
Using ARIMA and Random Forest Models for Climatic Datasets Forecasting
Osamah Basheer Shukur, Oday Aljuborey
The climatic changes have important role which may lead to huge problems for the health of human and other organisms, therefore it is necessary to study and forecast this type of datasets to reduce...
Constructing a Multilevel Modeling to High-Resolution CT (HRCT) Lung in Patients with COVID-19 Infection
Didar Ahmad Rashid, Mohammad Faqe,
The coronavirus disease, also called COVID-19 is caused by the SARS-CoV-2 virus. Most the people contaminated with the virus will experience mild to moderate symptoms of respiratory diseases. The...
Use the robust RFCH method with a polychoric correlation matrix in structural equation modeling When you are ordinal data.
Omar Ibraheem, Mohammed Jasim Mohammed,
Structural Equation Modeling is a statistical methodology commonly used in the social and administrative sciences and all other. In this research, the researcher made a comparison between methods...
Review Paper
Study of the two-parameter Weibull distribution and Estimation of the scale and shape parameter application to the voltage data of the cement material (review)
Safwan Rashed, Farok Thafer Thafer, Ali Abdallah Sulayman,
Survival distributions are important and commonly used in different fields and the Weibull Distribution is one of these distributions that has a different formula and the Weibull distribution has...
