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Open Journal of Applied Sciences 2023年第12期13卷 2223-2232页

作者： konan yao Tiémoman Kone Venance Saho Zoh Department of Computer Science and Digital Science Virtual University of C&#244te d’Ivoire Abidjan C&#244te d’Ivoire

The issue related to the risk of identity impersonation, where one person can be replaced by another in online exam surveillance systems, poses challenges. This study focuses on the effectiveness of detecting attempts of identity impersonation through face substitution during online exams, with the aim of ensuring the integrity of assessments. The goal is to develop facial recognition algorithms capable of precisely detecting these impersonations, training them on a tailored database rather than biased generic data. An original database of student faces has been created. An algorithm leveraging advanced deep learning techniques such as depthwise separable convolution has been developed and evaluated on this database. We achieved very high levels of precision, reaching an accuracy rate of 98% in face detection and recognition.

关键词： Online Exams Face Recognition Convolutional Neural Networks Data Bias

Analysis of Students’ Preferences and Engagement with Mobile Games: A Study of Game Assets and Colour Impact

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Open Journal of Applied Sciences 2023年第12期13卷 2211-2222页

作者： Venance Saho Zoh Tiémoman Koné yao konan Informatique et Sciences du Numérique Université Virtuelle de C&#244te d’Ivoire Abidjan C&#244te d’Ivoire

Mobile games are gaining in popularity among students, although the factors driving engagement remain poorly understood. This study, conducted among 378 students studying for a Bachelor’s degree in Computer and Digital Sciences at the Université Virtuelle de Côte d’Ivoire, explores the influence of game assets and colours on player engagement. Using an online questionnaire, the study identified students’ gaming preferences and their perception of colours. The results show that the key elements most favoured by students are graphics, sound design, the game system, narrative, interactivity and accessibility. What’s more, colour plays a decisive role in their preferences and commitment to educational mobile games.

关键词： Engagement Game Assets Colour Mobile Games

Spontaneous Disappearance of a Ruptured Intracranial Aneurysm

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Open Journal of Modern Neurosurgery 2019年第2期9卷 164-171页

作者： André Tokpa Louis Derou konan Serge yao Dominique Oka N’dri Department of Neurosurgery Teaching Hospital of Bouaké Bouaké C&#244 te d’Ivoire Department of Neurosurgery Teaching Hospital of Yopougon Abidjan C&#244 te d’Ivoire

The spontaneous disappearance of a ruptured intracranial aneurysm is unusual and its mechanism remains incompletely understood. However, several hypotheses are put forward and are mostly found in Virchow’s triad. We report the case of a man who suffered subarachnoid hemorrhage by rupture of a blister aneurysm of the P1 segment of the left posterior cerebral artery. A control arteriography performed one week after the rupture showed a disappearance of the aneurysm and a significant vasospasm of the carrier artery. Angiograms performed at 3 weeks and 3 months confirmed this disappearance of the aneurysm and a return to normal artery size. Clinically the patient was doing well. Therefore his aneurysm was spontaneously declared cured. Several studies are needed to clarify the natural history of spontaneously thrombosed aneurysms and elucidate their occurrence mechanism in order to improve the management of intracranial aneurysmal pathology.

关键词： Intracranial Aneurysm Subarachnoid Hemorrhage Cerebral Angiography Spontaneous Thrombosis

Congenital Depressed Skull Fracture Lifting with Suction Cup: A Therapeutic Alternative to Surgery

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Open Journal of Modern Neurosurgery 2019年第2期9卷 115-122页

作者： André Tokpa Louis Derou konan Serge yao Oka Dominique N’dri Department of Neurosurgery Teaching Hospital of Bouaké Bouaké Cote d’Ivoire Department of Neurosurgery Teaching Hospital of Yopougon Abidjan Cote d’Ivoire

Congenital skull fractures of newborn are rare and create medico-legal problems. Their management is controversial. Between surgery considered too aggressive and uncertain conservative attitude, reduction by suction cup or breast pump is an alternative. The authors report their experience through a case of successful resolution of a congenital depressed skull fracture using a suction cup in a newborn at 13 day of life followed by a literature review. This technique avoids the usual complications of surgery and reduces the anxiety of parents related to surgery. It also avoids the anxiety of having a newborn with a recessed skull and a conservative attitude with uncertain outcome.

关键词： Congenital Skull Fracture Depressed Skull Fracture Suction Cup

Clinical Factors Influencing the Neurological Recovery of Patients Operated for a Cervical Myelopathy at the Teaching Hospital of Bouake

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Open Journal of Modern Neurosurgery 2023年第2期13卷 51-59页

作者： Derou Louis Dongo Soress yao konan Serge Teti Landry Keke Jean-Baptiste Fionko yao Bernard Tokpa André Broalet Espérance Haidara Aderehime Neurosurgery Department Bouaké Teaching Hospital Bouaké Ivory Coast Neurosurgery Department Yamoussoukro Saint Joseph Moscatti’s Hospital Yamoussoukro Ivory Coast

Introduction: Cervical myelopathy is the most common myelopathy among people over 50 of age. Cervicosteoarthritis is the main etiology. The purpose of this work was to identify clinical factors that may influence neurological recovery in patients undergoing surgery for cervical myelopathy in our work setting. Materials and Methods: We performed a retrospective analytical study on patients operated on for cervical myelopathy at the teaching hospital of Bouake. The logistic regression model was used to identify the factors influencing post-operative neurological recovery. Results: 50 patients’ records have been enrolled in this study. The mean age of our patients was 53 years with extremes ranging from 25 to 78 years and 39 of our patients (62%) were male. The mean modified pre-operative JOA score was 11.62 versus 12.94 after the surgery. Age, sex, the number of levels operated on and the duration of the evolution of the signs showed no significant link with neurological recovery. Preoperative mild myelopathy (P = 0.0491) and post-operative functional rehabilitation (P = 0.0459) were identified as factors favouring neurological recovery after cervical myelopathy surgery. Conclusion: The good conducts of functional rehabilitation sessions as well as a mild myelopathy were the factors favouring neurological recovery.

关键词： Spinal Spondylosis Medullary Compression Myelopathy

A Rare Case of a Thoracic Spinal Hemangiopericytoma

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Open Journal of Modern Neurosurgery 2019年第1期9卷 1-6页

作者： Derou Keableon Louis Irié Bi Gohi Serge Tokpa André konan Serge yao Bougaci Nassim Lonjon Michel Neurosurgery Department Bouake Teaching Hospital Bouake Ivory Coast Anesthesia-Intensive Care Unit Bouake Teaching Hospital Bouake Ivory Coast Neurosurgery Department Pasteur Hospital Nice France

Spinal hemangiopericytomas are rare tumors. To date, only 80 cases of spinal hemangiopericytomas have been reported in the literature. The postoperative evolution of this condition in rare cases can be complicated by a symptomatic compressive epidural hematoma that can be the source of serious neurological complications requiring emergency surgery. We report a rare case of intradural and extramedullary spinal hemangiopericytomas with favorable evolution after treatment in an 82 years old woman.

关键词： Hemangiopericytoma Spine Intradural Extramedullary Radiotherapy Emergency Surgery

Effect of Different Parts of <i>Kigelia africana</i>Fruit Aqueous Extracts on Sperm Parameters and Testis

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Advances in Reproductive Sciences 2021年第3期9卷 171-188页

作者： Maïmouna Coura Koné Blaise Wokapeu Kpan Ibrahima Kandé Roger Koffi Kouakou Romuald Sylvère Koman yao konan Koffi Kouakou Laboratory Biology and Health Biology of Development and Reproduction Unit Biosciences UFR Félix HOUPHOU&Euml T-BOIGNY University Abidjan C&ocirc te d’Ivoire Laboratory of Natural Environments and Biodiversity Conservation Botanical Research and Training Unit Félix HOUPHOU&Euml T-BOIGNY University Abidjan C&ocirc te d’Ivoire UFR Science of Nature Nangui Abrogoua University Abidjan C&ocirc te d’Ivoire National Floristic Center (CNF) Abidjan C&ocirc te d’Ivoire

Kigelia africana is a plant of ivoirian pharmocopae commonly used in infertility treatment. The Kigelia africanawhole fruit extracts are known to improve sperm parameters like density, morphologie and mobility. However, data related to efficiency of different parts of the fruit are lack. The aim of this study was to know the effects of aqueous extracts of the whole Kigelia africana fruit (AP) and of the fruit without the peel (SP) on the sperm parameters and testicular tissue of mice. The phytochemical composition analysis of the SP and AP aqueous extracts of Kigelia africana fruit reveals several secondary metabolites in variable abundance. The sperm densities (Figure 1) of the SP (~78.106 spz/ml ± 2.60) and AP (~96.15 × 106 spz/ml ± 2.44) groups were higher than that of the control (~63.95.106<

关键词： Kigelia Spermatogenesis Density Mobility Testis

Craniofacial Horn Injuries: Rares Lesional Entities at the University Hospital of Bouaké(Côte d’Ivoire)

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Open Journal of Stomatology 2018年第7期8卷 250-257页

作者： Eric Kouassi Zegbeh-N’Guessan Adoubs Célestin Benie Gohi Serge Irie Bi Rokiatou Kone-Kamate Serge yao konan Grébéret Emmanuel Crezoit Department of Odontostomatology and Maxillofacial Surgery of the University Hospital of Bouaké C&ocirc te d’Ivoire Department of Pediatric Surgery CHU Bouaké C&ocirc te d’Ivoire Resuscitation and Anesthesiology Department of the University Hospital of Bouaké C&ocirc te d’Ivoire Department of Neurosurgery of the University Hospital of Bouaké C&ocirc te d’Ivoire

Aim: Describe the epidemiological, clinical and therapeutic particularities of craniofacial trauma by encornment. Type of study: This was a retrospective and descriptive study. Material and methods: It took place in the surgical emergency departments of Bouaké (Côte d’Ivoire) University Hospital from January 2013 to December 2017, for a period of 5 years. It focused on patients of 0 to 5 years old admitted for craniofacial trauma involving the horn of a bovine. Results: Of the 26 cases of traumatic encornment, 11 were craniofacial location (42%). There were 9 male and 2 female victims. The average age was 10.54 years with extremes of 6 months and 24 years. Patients came from rural areas of Côte d’Ivoire. Bovids were responsible for all causal encornements. The lesions involved the scalp (3 cases) and the face (8 cases). The lesions were cutaneous-musculo skeletal in 7 cases. The surgical treatment included debridement associated to a suture in all cases and associated with maxillo mandibular blockage in 3 cases and duro-cranioplasty in one case. Conclusion: In the local context, facial cranio traumatism by encornement is rare and seems to be essentially infantile, masculine and rural problem.

关键词： Cranio Facial Trauma Encornement Cow

Epidemiological and Diagnostic Features of Non-Traumatic Gonalgia in Adults in Bouake (Ivory Coast): About 140 Patients

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Open Journal of Rheumatology and Autoimmune Diseases 2023年第4期13卷 78-87页

作者： Kouakou Ehaulier Soh Christian Louis Sougué Charles yao konan Joe Clauvis Traore Aissata Koffi Joseph Kan Enock Goua Jean Jacques Same Bebey Francine Goupille Phillipe Daboiko Jean Claude Felix Rheumatology Department University Hospital Center Bouaké Bouaké C&#244te d’Ivoire Internal Medicine Department University Hospital Center Sour&#244 Sanou Bobo Dioulasso Burkina Faso Rheumatology Department Laquintinie Hospital Douala Cameroon Rheumatology Department University Hospital Center Tours France

Background: Non traumatic gonalgia is the second most common reason for rheumatology consultations and accounted for 15.6% of rheumatological disorders in Abidjan. Objective: The aim of this work was to study the epidemiological and diagnostic features of non-traumatic gonalgia (NTG) in a black adult population from sub-Saharan Africa. Patients and Methods: This was a five-year retrospective descriptive study (January 2014 to December 2018) of black sub-Saharan African adult patients with non traumatic gonalgia seen in the rheumatology department of the Bouake University Hospital in Côte d’Ivoire. Results: Of 2198 patients seen for rheumatological conditions, 140 had non traumatic gonalgia (6.4%). The mean age of patients was 56.13 ± 13.3 years (extremes 20 and 87 years), and the sex ratio was 0.43 (42 men and 98 women). Gonalgia without swelling was observed in 33.6% of cases. Symptoms were predominantly progressive (97.1%), chronic (82.1%) and bilateral (50%). The causes of TNM were gonarthrosis (85%), septic arthritis (7.1%), reactive arthritis (2.9%), gout (2.9%), rheumatoid arthritis (1.4%) and chondrocalcinosis (0.7%). Gonarthrosis (119/140) was bilateral in 65 patients, bi- or tri-compartmental in 83, radiographic stage (Kellgren and Lawrence) III in 80 and IV in 15. A germ was isolated in two cases of septic arthritis (methicillin-sensitive Staphylococcus aureus and Streptococcus pneumoniae). Conclusion: GNT is common in rheumatology practice in Bouake, and mainly affects women in their fifties. It is most often a chronic bilateral gonalgia, with gonarthrosis as the main etiology.

关键词： Non-Traumatic Gonalgia Gonarthrosis Bouake

Epidemiological and Clinical Aspects of Hospitalized Patients with Chronic Rheumatic Disease at Cocody University Hospital in Abidjan

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Open Journal of Rheumatology and Autoimmune Diseases 2023年第3期13卷 65-70页

作者： Ehaulier Soh Christian Louis Kouakou Charles Sougué konan Joe Clauvis yao Aissata Traore Joseph Kan Enock Koffi Jean Jacques Goua Francine Same Bebey Phillipe Goupille Jean Claude Felix Daboiko Rheumatology Department Bouake University Hospital Bouake C&#244te d’Ivoire Rheumatology Department Cocody University Hospital Abidjan C&#244te d’Ivoire Department of Internal Medicine Sour&#244 Sanou University Hospital Bobo Dioulasso Burkina Faso Rheumatology Department Laquintinie Hospital Douala Cameroon Rheumatology Department Tours University Hospital Tours France

Objective: To study the epidemiological and diagnostic features of chronic rheumatic disease (CRD) in a black population in sub-Saharan Africa. Patients and Methods: Retrospective descriptive study over eight years (January 2005 to December 2012) of patients seen for CRD in rheumatology hospitalization at the CHU de Cocody in Abidjan, Côte d’Ivoire. Results: Of 3147 hospitalized patients, 92 had CRD, a frequency of 2.9%. The mean age of patients was 43.50 ± 15.6 years (extremes: 10 to 79 years). The sex ratio was 0.08 (7 men and 85 women). The socio-economic level was low in 44 patients (47.8%), medium in 44 patients (47.8%), and high in 4 patients (4.4%). The reasons for consultation were polyarthritis (64.1%), polyarthralgia (30.4%), and oligoarthritis (5.4%). The mean duration of symptomatology was 19 months (range: 3 to 20 years). The mean length of hospital stay was 14.2 ± 7.7 days (range: 2 to 36 days). The CRD observed were: rheumatoid arthritis (59.8%), systemic lupus erythematosus (23.9%), mixed connective tissue disease (6.5%), undifferentiated connective tissue disease (3.3%), polymyositis (3.3%), systemic scleroderma (2.2%), and systemic vasculitis (1%). Conclusion: CRD is not uncommon in rheumatology hospitals in Abidjan. Diagnostic delays are long, and rheumatoid arthritis and systemic lupus erythematosus are the most frequently encountered conditions.

关键词： Chronic Rheumatic Disease Rheumatoid Arthritis Lupus Abidjan