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Video Games and School Performances of Dakar High School Students

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Open Journal of Applied Sciences 2024年第7期14卷 1851-1862页

作者： souleymane Diallo Papa Mamadou Gaye National Higher Institute of Popular Education and Sport (INSEPS) UCAD Dakar Senegal

The triptych (Smartphones, Video games, adolescents) has imposed itself on the collective consciousness in the form of questioning to the point of becoming a social phenomenon. It thus raises concerns about the uses that adolescents make of it and the effects on their academic performance, which we proposed to study among middle school students from the Dakar academy inspection. Where appropriate, we used mixed methods with the collection techniques of questionnaire survey, semi-structured interviews respectively with middle school students, adults (parents, supervisors, teachers, etc.), participant observation and literature review. Concretely, before accessibility to video games, the middle school students were more idle and well-behaved, watched a lot of TV, played with their brothers and sisters or did household chores. The majority of young people had good, very good or excellent conduct and their averages were fair, fairly good or good. With access to a diverse digital environment, middle school students have passionately turned to video games. As a result, their learning time, concentration and submission to parental injunctions have declined significantly. This situation negatively affected their academic performance and encouraged bad behavior.

关键词： Digital Revolution Video Games Middle School Student Education Academic Performance

Exact solutions for magnetohydrodynamic nanofluids flow and heat transfer over a permeable axisymmetric radially stretching/shrinking sheet

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Chinese Physics B 2024年第2期33卷 108-114页

作者： U.S.Mahabaleshwar G.P.Vanitha L.M.Pérez Emad H.aly I.Pop Department of Studies in Mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de F´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of Mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of Mathematics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on the magnetohydrodynamic impact on the axisymmetric flow of Al_(2)O_(3)/Cu nanoparticles suspended in H_(2)O past a stretched/shrinked *** the use of partial differential equations and the corresponding thermophysical characteristics of nanoparticles,the physical flow process is *** resultant nonlinear system of partial differential equations is converted into a system of ordinary differential equations using the suitable similarity *** transformed differential equations are solved *** of the magnetic parameter,solid volume fraction and stretching/shrinking parameter on momentum and temperature distribution have been analyzed and interpreted *** skin friction and Nusselt number were also *** addition,existence of dual solution was deduced for the shrinking sheet and unique solution for the stretching ***,Al_(2)O_(3)/H_(2)O nanofluid flow has better thermal conductivity on comparing with Cu/H_(2)O ***,it was found that the first solutions of the stream are stable and physically realizable,whereas those of the second ones are unstable.

关键词： magnetohydrodynamic nanofluid stretching/shrinking sheet axisymmetric flow analytical solution suction/injection

Assessment of groundwater suitability for different activities in Toshka district,south Egypt

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Journal of Groundwater Science and Engineering 2024年第1期12卷 34-48页

作者： Marwa M aly Shymaa AK Fayad Ahmed MI Abd Elhamid Faculty of Engineering Mataria Helwan UniversityCairo 11718Egypt Division of Engineering International Academy for Engineering and Media Science(IAEMS)6th of October City 15515Egypt Hydraulics Research Institute National Water Research CenterMWRICairo 13621Egypt

Globally,groundwater has globally emerged as a crucial freshwater source for domestic,irrigation,and industrial *** evaluation of groundwater quality in the Toshka region is imperative to ensure its suitability for the extensive agricultural and industrial activities underway in this promising,groundwater-dependent development *** is particularly significant as Egypt increasingly relies on groundwater reserves to address freshwater deficits and to implement mega-development projects in barren *** this study,fifty-two samples were collected from the recently drilled wells tapping into the Nubian Sandstone Aquifer(NSA)in the Toshka *** quality was assessed through hydrochemical analysis,Piper diagram,and various indicators such as Na%,SAR,RSC,KR,MH and *** hydrochemical analysis revealed improved groundwater quality characteristics,attributed to continuous recharge from Lake *** Piper diagram categorised most of the water samples as"secondary salinity"water *** all wells proved suitable for irrigation with only two wells unsuitable based on MH values and six wells based on KR *** Total Hardness(TH)values,all samples were classified as"Soft",indicating their suitability for domestic and industrial *** Quality Index(WQI)results concluded that all samples met WHO and FAO guidelines for drinking and irrigation,*** distribution maps,constructed using GIS,facilitate the interpretation of the *** monitoring of quality parameters is essential to detect any deviation from permissible limits.

关键词： Nubian Sandstone Aquifer Water Quality Assessment Hydro-chemical Analysis Irrigation Quality Indicators Domestic Use Water Quality Index

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry traces the geographical source of Biomphalaria pfeifferi and Bulinus forskali,involved in schistosomiasis transmission

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Infectious Diseases of Poverty 2024年第1期13卷 98-99页

作者： Papa Mouhamadou Gaye EI Hadj Ibrahima Ndiaye souleymane Doucoure Doudou Sow Mapenda Gaye Ndiaw Goumballa Carole Cassagne Coralie L'Ollivier Oleg Medianikov Cheikh Sokhna Stephane Ranque Aix-Marseille University IRD AP-HM SSA VITROME Marseille France VITROME International IRD-UCAD Campus Dakar Senegal Hospital-University Institut (IHU) Mediterranée Infection Marseille France Departement of Animal Biology Faculty of Sciences and Techniques UCAD Dakar Senegal Department of Parasitology-Mycology UFR Sciences de la Santé Université Gaston Berger Saint-Louis Senegal

Background Freshwater snails of the genera Bulinus spp.,Biomphalaria spp.,and Oncomelania *** the main intermediate hosts of human and animal *** of these snails has long been based on mor-phological and/or genomic criteria,which have their *** limitations include a lack of precision for the morphological tool and cost and time for the DNA-based ***,Matrix-Assisted Laser Desorp-tion/lonization Time-Of-Flight(MALDI-TOF)mass spectrometry,a new tool used which is routinely in clinical microbi-ology,has emerged in the field of malacology for the identification of freshwater *** study aimed to evaluate the ability of MALDI-TOF MS to identify Biomphalaria pfeifferi and Bulinus forskali snail populations according to their *** This study was conducted on 101 *** and 81 *** snails collected in three distinct geo-graphical areas of Senegal(the North-East,South-East and central part of the country),and supplemented with wild and laboratory *** which had previously been morphologically described were identified by MALDl-TOF MS[identification log score values(LSV)≥1.7],after an initial blind test using the pre-existing *** DNA-based identification,new reference spectra of ***(n=10)and ***(n=5)from the geographical areas were added to the MALDI-TOF spectral *** final blind test against this updated database was per-formed to assess identification at the geographic source *** MALDI-TOF MS correctly identified 92.1%of 101 *** snails and 98.8%of 81 *** *** the final blind test,88%of 166 specimens were correctly identified according to both their species and sampling site,with LSVs ranging from 1.74 to *** geographical source was adequately identified in 90.1%of 91 *** and 85.3%of 75 *** *** Our findings demonstrate that MALDI-TOF MS can identify and differe

关键词： Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry Snail Intermediate host Biomphalaria pfeifferi Bulinus forskali Schistosomiasis Senegal

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Winning Hearts

ChinAfrica 2024年第3期16卷 44-45页

作者： aly DIOUF

Sinohydro and Senegal join forces to provide drinking water in ***,a subsidiary of PowerChina,is currently engaged in efforts to substantially enhance the potable water supply in Dakar,Senegal.A diligent group of Chinese and Senegalese workers is engaged in roundthe-clock efforts along the Avenue du Front de Terre prolongée,which marks the starting point of the Route des Pères Maristes,with the objective of improving the distribution network for potable water in the Dakar *** a population density of 7,277 inhabitants per square km and an estimated 1.18 million inhabitants in 2023,there is an evident and increasing need for potable *** need is further compounded by significant water loss caused by the advanced age of the pipelines,with some pipes dating back to the colonial era.

关键词： Avenue starting network

Does local vaginal estrogen after tension-free transobturator vaginal tape reduce overactive bladder symptoms in postmenopausal women? A prospective randomized, controlled study

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Asian Journal of Urology 2024年第1期11卷 86-92页

作者： Samer Mahmoud Morsy Dalia Farouk Sara Hassan Ahmed Yehia Abdelaziz Hussein aly Hussein Urology Department Kasr Al Ainy HospitalCairo UniversityCairoEgypt Obstetrics and Gynecology Department Kasr Al Ainy HospitalCairo UniversityCairoEgypt

Objective:We aimed to evaluate the efficacy of topical estrogen after transvaginal tension-free vaginal tape-obturator(TVT-O)in the treatment of de novo overactive bladder symptoms that appear after ***:This is a prospective randomized controlled study performed in the Urology and Gynecology Departments,Kasr Al Ainy Hospital,Cairo University,Cairo,*** hundred and ten postmenopausal females presenting during the period between January 2017 and November 2020 with stress urinary incontinence were included in the *** were divided into two groups,105 patients in Group A(treatment group)and 105 patients in Group B(control group).Patients in Group A underwent transvaginal TVT-O followed by local vaginal estrogen treatment for 6 months,while patients in Group B underwent transvaginal TVT-O *** study included any postmenopausal female with urodynamic stress urinary *** patients had to fulfill a 3-day bladder diary,overactive bladder symptoms score,urine analysis,urodynamic study,and post-voiding residual urine measurement by abdominal ultrasound preoperatively and at 3-month and 6-month ***:At 6-month follow-up,daytime frequency was reduced to 8%in Group A(increased to 21%in Group B)with a statistically significant difference between both groups(p=0.009).At 6-month follow-up,nocturia was 8%in Group A(11%in Group B)with no statistically significant difference between both groups(p=0.469).There was a statistically significant difference between both groups as regards to urinary urgency at 6-month follow-up(p=0.024).There was a statistically significant difference in postoperative wound healing events as regards to cure,hyperemia,gapping,and wound infection 1 week after intervention between both groups(p=0.008).No local or systemic side-effects were reported from local estrogen ***:Local vaginal estrogen treatment given to postmenopausal patients after midurethral sling procedures can reduce the symptoms o

关键词： Stressurinary incontinence Estrogen Midurethral sling Overactive bladder symptom

An Approach to Detect Structural Development Defects in Object-Oriented Programs

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Open Journal of Applied Sciences 2024年第2期14卷 494-510页

作者： Maxime Seraphin Gnagne Mouhamadou Dosso Mamadou Diarra souleymane Oumtanaga Department of Mathematics and Computer Science University Félix HOUPHOU&#203T-BOIGNY Abidjan C&#244te d’Ivoire Research and Innovation Unit in Mathematics and Digital Sciences National Polytechnic Institute Félix HOUPHOU&#203T-BOIGNY Yamoussoukro C&#244te d’Ivoire

Structural development defects essentially refer to code structure that violates object-oriented design principles. They make program maintenance challenging and deteriorate software quality over time. Various detection approaches, ranging from traditional heuristic algorithms to machine learning methods, are used to identify these defects. Ensemble learning methods have strengthened the detection of these defects. However, existing approaches do not simultaneously exploit the capabilities of extracting relevant features from pre-trained models and the performance of neural networks for the classification task. Therefore, our goal has been to design a model that combines a pre-trained model to extract relevant features from code excerpts through transfer learning and a bagging method with a base estimator, a dense neural network, for defect classification. To achieve this, we composed multiple samples of the same size with replacements from the imbalanced dataset MLCQ1. For all the samples, we used the CodeT5-small variant to extract features and trained a bagging method with the neural network Roberta Classification Head to classify defects based on these features. We then compared this model to RandomForest, one of the ensemble methods that yields good results. Our experiments showed that the number of base estimators to use for bagging depends on the defect to be detected. Next, we observed that it was not necessary to use a data balancing technique with our model when the imbalance rate was 23%. Finally, for blob detection, RandomForest had a median MCC value of 0.36 compared to 0.12 for our method. However, our method was predominant in Long Method detection with a median MCC value of 0.53 compared to 0.42 for RandomForest. These results suggest that the performance of ensemble methods in detecting structural development defects is dependent on specific defects.

关键词： Object-Oriented Programming Structural Development Defect Detection Software Maintenance Pre-Trained Models Features Extraction Bagging Neural Network

Eau les coeurs Sinohydro et le Senegal unissent leurs forces pour l'eau potable a Dakar

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中国与非洲（法文版） 2024年第3期16卷 44-45页

作者： aly DIOUF 不详

Au Sénegal,Sinohydro,une filiale de APowerChina,se consacre a I'amelioration significative de I'approvisionnement en eau potable de *** I'avenue du Front de Terre prolongée,a I'origine de la route des Peres Maristes,uneéquipe devouée d'ouvriers sénegalais et chinois s'affaire jour et nuit pour optimiser le reseau de distribution d'eau potable dans le departement de Dakar.

关键词： pour des forces

不同冲洗方法对微创预备后根管内氢氧化钙封药清除效果的比较研究

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牙体牙髓牙周病学杂志 2024年第2期29卷 95-98页

作者： MERIHAN aly MORSY aly HASSAN ABOUDESHISH 沈栖云张旗同济大学口腔医学院·同济大学附属口腔医院牙体牙髓病科上海牙组织修复与再生工程技术研究中心

目的：比较不同冲洗方法对微创预备后根管内氢氧化钙封药的清除效果，为临床治疗提供参考。方法：使用Tru Natomy镍钛系统对32个前磨牙进行微创根管预备后，向根管内封入氢氧化钙。根据不同冲洗方法将样本随机分为4组（n=8）：被动超声... 详细信息

目的：比较不同冲洗方法对微创预备后根管内氢氧化钙封药的清除效果，为临床治疗提供参考。方法：使用Tru Natomy镍钛系统对32个前磨牙进行微创根管预备后，向根管内封入氢氧化钙。根据不同冲洗方法将样本随机分为4组（n=8）：被动超声荡洗（PUI）组、声波荡洗（EDDY）组、XP-endo finisher(XPF)组、手用K锉（K File）组。冲洗前后拍摄CBCT，并对残余氢氧化钙进行定量计算，比较不同冲洗方法对氢氧化钙的清除效果。结果：所有冲洗技术应用后根管内均存在氢氧化钙残留，使用PUI、XPF、EDDY和K File之间存在显著差异（P <0.05）,PUI和XPF组的氢氧化钙残留量相对较少。结论：在微创预备后，使用PUI和XPF对根管内的氢氧化钙去除效果更好，但PUI的效率与XPF间无显著差异。

关键词：氢氧化钙微创牙髓治疗 XPF PUI 声波荡洗