بحوث سكوبس — نورا فوزي عبده الانصاري

The current modeling study involved the development of a new statistical model for predicting the spread of infectious epidemics and counts the expected number of infections in crowded cities and how to develop infected cities into intelligent cities according to international standards. The study was completed based on historical infections that occurred in the city of Hillah in central Iraq and the Weka program was used to evaluate the infection number on the basis of historical infections, city’s infrastructure, metrological elements, and social education. The study included the scenarios of predicting the infections of epidemic due to Changing Infrastructure and Intelligent City scenarios. It was found the percent reduction of infections in the Changing Infrastructure of a city was ranged between (39.3%-100%) in January and between (6.5%-25.7%) in July, while in the case of Intelligent City the percent reduction was ranged between (66.6%-100%) in January and between (30.5%-75.2%) in July 2030. The main finding is that the number of infections decreases mainly by relying on the restructuring of infrastructure according to intelligent cities and the infection number is affected a lot by climate changes, especially the temperatures that are unfortunately uncontrollable. The study recommends using smart city specifications in designing cities to resist epidemics in the future. © 2025, AP2. All rights reserved.

The current modeling study involved the development of a new statistical model for predicting the spread of infectious epidemics and counts the expected number of infections in crowded cities and how to develop infected cities into intelligent cities according to international standards. The study was completed based on historical infections that occurred in the city of Hillah in central Iraq and the Weka program was used to evaluate the infection number on the basis of historical infections, city’s infrastructure, metrological elements, and social education. The study included the scenarios of predicting the infections of epidemic due to Changing Infrastructure and Intelligent City scenarios. It was found the percent reduction of infections in the Changing Infrastructure of a city was ranged between (39.3%-100%) in January and between (6.5%-25.7%) in July, while in the case of Intelligent City the percent reduction was ranged between (66.6%-100%) in January and between (30.5%-75.2%) in July 2030. The main finding is that the number of infections decreases mainly by relying on the restructuring of infrastructure according to intelligent cities and the infection number is affected a lot by climate changes, especially the temperatures that are unfortunately uncontrollable. The study recommends using smart city specifications in designing cities to resist epidemics in the future. © (2024), (Urban Creativity). All Rights Reserved.

The development and use of blended concrete systems have been growing rapidly in the construction industry, mainly due to cost savings, energy savings, and sustainability. This paper represents the influence of Calcined Alumina (AC) on the strength and chloride-induced corrosion of concrete. AC, at various contents, was appropriately added as a partial replacement for ordinary Portland cement (OPC) in blended mixtures (3,5 and 7 % by mass of OPC). To find out its impact on the fresh properties (slump flow), hardened properties (compressive and splitting strength), and durability properties (water absorption at, rapid chloride migration coefficient, chloride penetration resistance, and corrosion resistance) depending on curing ages. Moreover, it investigates the effect of crack width on chloride penetration and corrosion rate. The results reveal that the addition of AC has a positive impact on concrete. Whereas obtained a decrease in the workability of concrete and an increase in the water demand. On the other hand, a significant increase in the compressive strength, tensile strength, and durability properties of concrete was recorded. Also, the replacement of cement with 7 % AC achieved the highest value of compressive strength (63,67 MPa) in 90 days. Also, improvements in chloride penetration resistance and corrosion rate. The presence of Al₂O₃ reduces the ingress of chloride ions into concrete considerably, leading to the conclusion that the decrease in crack width is due to a decrease in corrosion steel products and the chloride penetration concentration and depth. © 2024; Los autores.