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Pathfinding in Strategy Games and Maze Solving Using A* Search algorithm

Journal of Computer and Communications 2016年第11期4卷 15-25页

作者： Nawaf Hazim Barnouti sinan sameer mahmood al-dabbagh Mustafa Abdul Sahib Naser al-Mansour University College Baghdad Iraq

Pathfinding algorithm addresses the problem of finding the shortest path from source to destination and avoiding obstacles. One of the greatest challenges in the design of realistic Artificial Intelligence (AI) in computer games is agent movement. Pathfinding strategies are usually employed as the core of any AI movement system. In this work, A* search algorithm is used to find the shortest path between the source and destination on image that represents a map or a maze. Finding a path through a maze is a basic computer science problem that can take many forms. The A* algorithm is widely used in pathfinding and graph traversal. Different map and maze images are used to test the system performance (100 images for each map and maze). The system overall performance is acceptable and able to find the shortest path between two points on the images. More than 85% images can find the shortest path between the selected two points.

关键词： Nawaf Hazim Barnouti sinan sameer mahmood al-dabbagh Mustafa Abdul Sahib Naser

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Parallel Quick Search algorithm for the Exact String Matching Problem Using OpenMP

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Journal of Computer and Communications 2016年第13期4卷 1-11页

作者： sinan sameer mahmood al-dabbagh Nawaf Hazim Barnouti Mustafa Abdul Sahib Naser Zaid G. ali Software Engineering and Information Technology Department Al-Mansour University College Baghdad Iraq

String matching is seen as one of the essential problems in computer science. A variety of computer applications provide the string matching service for their end users. The remarkable boost in the number of data that is created and kept by modern computational devices influences researchers to obtain even more powerful methods for coping with this problem. In this research, the Quick Search string matching algorithm are adopted to be implemented under the multi-core environment using OpenMP directive which can be employed to reduce the overall execution time of the program. English text, Proteins and DNA data types are utilized to examine the effect of parallelization and implementation of Quick Search string matching algorithm on multi-core based environment. Experimental outcomes reveal that the overall performance of the mentioned string matching algorithm has been improved, and the improvement in the execution time which has been obtained is considerable enough to recommend the multi-core environment as the suitable platform for parallelizing the Quick Search string matching algorithm.

关键词： String Matching Pattern Matching String Searching algorithms Quick Search algorithm Exact String Matching algorithm ? Parallelization OpenMP

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Ocular manifestations of children with atopic dermatitis in Saudi Arabia

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International Journal of Ophthalmology(English edition) 2023年第5期16卷 787-793页

作者： Lina Hassan Raffa Tala Musa Roblah Nasser Talal Balbaid Bader sameer Zimmo mahmood Jameel Showail Department of Ophthalmology King Abdulaziz University HospitalJeddahSaudi Arabia Faculty of Medicine King Abdulaziz UniversityJeddahSaudi Arabia Department of Dermatology King Abdulaziz University HospitalJeddahSaudi Arabia

AIM:To examine the incidence of ocular abnormalities in children with atopic dermatitis(AD)in Saudi Arabia and its association with the severity of ***:This is a cross-sectional study on 50 children with AD who were between 5 and 16 years of *** severity of AD was evaluated using the SCORing Atopic Dermatitis(SCORAD)*** the children underwent slit lamp exams,visual acuity assessment,intraocular pressure measurement,and corneal *** children were considered to have an ophthalmic abnormality if one or more of the following signs were present:glaucoma,keratoconus suspicion,in addition to lid,conjunctival,corneal,lenticular,or retinal ***:Based on the SCORAD severity index,14%of children had mild AD(7/50),38%had moderate AD(19/50),and nearly half had severe *** than half the children exhibited facial involvement,and half had peri-orbital *** mean SCORAD index was *** mean age was 10.48±3.6y,and the cohort showed a slight male predominance(54%males).Both eyes of the 50 children in the cohort were *** on the ocular examinations,92%of the patients showed ocular abnormalities:lid abnormalities(27/50)followed by keratitis(22/50).Four patients had moderate risk for keratoconus in one eye and eight patients were suspected to have ***,SCORAD severity index was not associated with age,sex,or the number or presence of ophthalmic ***:This is the first study in Saudi Arabia to evaluate the prevalence of ocular manifestations in children with *** results indicate that the majority of children with AD have ocular abnormalities that mainly include lid *** on these findings,larger scale studies are needed to affirm whether regular screening for ophthalmic abnormalities would be beneficial for children with AD in terms of early intervention and prevention of sight-threatening complications.

关键词： atopic dermatitis children eczema keratoconus ocular disease ophthalmic abnormalities prevalence SCORAD

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