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几内亚中小企业电子商务采纳影响因素研究

几内亚中小企业电子商务采纳影响因素研究

作者：马德（mamadou ly）哈尔滨工业大学

学位级别：硕士

电子商务在日常商务和个人生活中已越来越受欢迎,但在几内亚这样的发展中国家,电子商务还不发达,对于中小企业电子商务采纳影响因素的研究也很少。本文旨在研究几内亚中小型企业电子商务采纳的影响因素,并确定这些因素对于电子商务采纳... 详细信息

电子商务在日常商务和个人生活中已越来越受欢迎,但在几内亚这样的发展中国家,电子商务还不发达,对于中小企业电子商务采纳影响因素的研究也很少。本文旨在研究几内亚中小型企业电子商务采纳的影响因素,并确定这些因素对于电子商务采纳的影响程度。论文首先回顾了电子商务采纳影响因素研究的相关文献,根据文献的研究结果,选取电子商务采纳作为因变量,选取网络速度和效率、感知利益、组织准备、安全性、成本、有用性、易用性等作为自变量,以此为基础提出了研究假设。接下来,进行了研究设计,包括量表设计、问卷设计、样本设计、数据收集方法的确定等。然后,对几内亚50个中小型企业进行了问卷调查,得到了相关数据,并用SPSS对数据进行了分析。研究结果表明,网络的效率和速度、感知利益、易用性、组织准备、安全性、成本和有用性对几内亚中小企业的电子商务采纳有显著影响。本研究为几内亚中小企业进行电子商务采纳提供了一个新的认知。由于几内亚中小型企业是以出口本国商品进入全球市场为目标,所以本研究的研究结果对于促进几内亚中小企业进行电子商务采纳具有重要意义。这项研究与其他任何实证研究一样有其自身的研究局限性。样本量是本研究的局限性之一。样本大小为50,对几内亚科纳克里的所有中小型企业进行推广。不过,这建议政府、工业界和研究学者对这方面的进一步研究应是当务之急。这项研究可以通过增加中小企业的样本规模和增加其他业务活动来改善,这对这项研究来说是非常重要的。更重要的是,本研究探讨了影响几内亚科纳克里中小型企业采用电子商务的因素。对于中小企业这一用语,并没有一个普遍接受的定义,而且几内亚没有一个单一的定义。几内亚科纳克里的大多数中小型企业以小规模经营,例如车间办公室,而这些商店不属于基于标准和理解的中小型企业的定义范围。此外,本研究报告还建议,今后的研究应考虑到影响几内亚中小企业采用电子商务的其他因素,如感知风险、支持工业提供咨询服务、将电子商务的优先顺序定为公司和市场准备就绪。这将是好的,如果样品的大小提高,以提高准确性和泛化的研究。这项研究解释了影响在几内亚科纳克里中小企业采用电子商务的六重要因素。几内亚商业、工业、旅游和手工业部应使中小企业认识到采用电子商务的好处。这可以通过研讨会来实现,也给中小企业提供了评价其新创新的机会。财政奖励和商业许可证的认可可以作为政府鼓励中小企业采用电子商务的有力工具。此外,政府亦应制订鼓励中小企采用电子商贸的政策。此外,中小型企业的管理层应确保其员工对公司各级的电子商务系统的使用情况给予充分的培训。总之,公司必须确保客户的信息和敏感的安全,通过使用密码来限制访问。互联网的可用性和速度与电子商务的采用有着重要的关系。互联网的可用性和速度使电子商务成为用户首选的购物方式,因为它既方便又方便,并且节省了用户的时间。此外,对于中小型企业,它减少广告和营销成本的运作,因为该公司将不必支付广告,因为这可以在他们的网站上。成本与电子商务的采用有着重要的关系。完全自动化的结帐,计费,库存管理,支付和其他类型的运营成本降低了总人数的员工,您需要运行您的电子商务业务。易用性与电子商务的应用有着重要的关系。用户友好的设计和易用的界面增加了用户的满意度。违反可用性约定的网站会混淆用户并导致公司收入损失。研究还表明,web站点可用性的重要性与该网站正在运行的环境中存在的竞争有关。安全性与电子商务的采用有着重要的关系。客户将始终检查其机密信息(如信用卡数据)的安全性。因此,重要的是要确保交易是安全的和有保障的。中小企业应确保其电子商务网站有适当和有效的ssl认证,使客户能够进行安全的交易。感知易用性与电子商务的采用有着重要的关系。这一发现表明,消费者为电子商务交易寻求一个简单、简便、快速的过程和环境。我们还表明,感知易用性是一个主要的决定因素,解释了采用者和非采纳人对电子商务的态度差异。像美丽的网站,易于导航,搜索栏的可用性,和美丽的图像显示将影响感知易用性。电子商务网站的易操作反过来又会导致更多的电子商务服务的使用。这项研究的主要目的是审查影响在几内亚科纳克里的中小企业采用电子商务的因素。这项研究增加了现有的研究,扩大了我们对中小企业采用电子商务的认识,并强调了采用电子商务的理由。根据管理的观点,这项研究的结果鼓励投资决策,并考虑到公司的需求的互联网发展服务。本研究是按照前人文献提出的理论框架进行的。多元回归分析表明,互联网的可用性和速度、感知的相对优势、易用性、组织准备、安全性、成本和感知效用是影响电子商务采用的significant因素。对影响中小企业电子商务采用的因素进行的研究是对这一领域的最早研究之一,所选的变量被证明是显著的,并不同地影响电子商务的采用。这项研究为中小型企业在从事任何类型的电子商务业务或在商界使用互联网时所面对的问题带来了光明。因此,这项研究被认为是

关键词：电子商务中小企业采纳几内亚

Diabetes Screening and Cardiovascular Risk in Tuberculosis Patients in Conakry and Surrounding Towns

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Open Journal of Endocrine and Metabolic Diseases 2024年第1期14卷 7-13页

作者： mamadou Chérif Diallo mamadou Dian Mamoudou Diallo Mody Abdoulaye Barry Kadija Dieng Alpha mamadou Diallo mamadou Mansour Diallo Oumou Diallo Amadou Kaké Gamal Abdel Nasser University of Conakry Conakry Guinea Endocrinology-Diabetology Department of Donka University Hospital Conakry Guinea Foundation for The Fight against Diabetes and Non-Communicable Diseases Conakry Guinea

Objective: To determine the prevalence of diabetes and the level of cardiovascular risk in tuberculosis patients treated in Conakry and surrounding towns. Method: This was a cross-sectional study carried out at tuberculosis treatment centers in Conakry and surrounding towns (Coyah and Dubréka) on World TB Day, November 14, 2022, among 350 tuberculosis patients. We determined the proportion of TB patients with diabetes and high hyperglycemia. We determined the Chi-square to identify the factors associated with the occurrence of diabetes in tuberculosis patients, and a significance threshold with p Results: The average age of participants was 33.5 ± 14.5 years, and they were predominantly male (59.7%). The majority of participants lived in Conakry (96.3%). 5.7% were known diabetics and 4.6% were known hypertensives. We found a prevalence of diabetes of 9.4%. Among diabetics, 39% were diabetes discoveries. 30% were hypertensive or had high blood pressure. Of these hypertensive patients, 26.4% were unrecognized hypertensives. Age and hypertension were statistically significantly associated with the onset of diabetes in tuberculosis patients. Medium, high and very high levels of cardiovascular risk were present in 23.4%, 8.9% and 3.4% respectively. Conclusion: Diabetes is common in tuberculosis patients. Cardiovascular risk factors, notably hypertension and cardiovascular risk level, are frequently associated with tuberculosis. Tuberculosis patients with cardiovascular risk factors should be screened for diabetes.

关键词： Screening Diabetes Tuberculosis Cardiovascular Risk Conakry

Frequency and Risk Factors of Neonatal Macrosomia at Labe Regional Hospital in Guinea

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Open Journal of Endocrine and Metabolic Diseases 2024年第2期14卷 26-32页

作者： mamadou Dian Mamoudou Diallo mamadou Mansour Diallo mamadou Chérif Diallo Alpha mamadou Diallo Kadija Dieng Mody Abdoulaye Barry mamadou Alpha Diallo Kadidiatou Bah Abdou Mazid Diallo El’hadj Zainoul Bah mamadou Malal Bori Diallo mamadou Sanou Sylla Amadou Kaké Diabetes Unit Labe Regional Hospital Labe Guinea Faculty of Health Sciences and Technology University of Conakry Conakry Guinea Department of Diabetes and Endocrinology Donka Hospital and University Center Conakry Guinea Neonatology Unit Labe Regional Hospital Labe Guinea

Macrosomia is defined as a term birth weight greater than or equal to 4000 grams, or greater than the 90 percentile of intrauterine growth curves. Excessive weight has harmful consequences for the newborn and is a major health concern. Objectives: To determine the frequency of neonatal macrosomia, describe risk factors and neonatal and maternal complications. Materials and methods: This was a cross-sectional study carried out between January and December 2022, involving newborns whose birth weight was greater than or equal to 4000 grams admitted to the neonatology unit of the Labe regional hospital. Results: 591 deliveries were recorded, 15 of which were macrosomic, representing a frequency of 2.54%. The average age of the women was 30.26 years. History of fetal macrosomia and diabetes was 93.33 and 71.43% respectively. The mean gestational age was 38.71 ± 0.75 SA, the mean antenatal consultation was 3 ± 0.8 and the mode of delivery was caesarean section (66.67%). Third-trimester ultrasound was performed in 53.33% of cases. Macrosomic newborns were male in 80% of cases. Neonatal complications were asphyxia (60%), hypoglycemia (20%) and hypocalcemia (13.33%). Factors associated with neonatal macrosomia were diabetes (P < 0.001), history of macrosomia (P Conclusion: this study shows that the frequency of neonatal macrosomia is 2.54% with high neonatal morbidity among newborns hospitalized in the neonatology unit of the Labé regional hospital. Screening for macrosomia risk factors during pregnancy is essential to prevent perinatal complications.

关键词： Frequency Macrosomia Labe

Congenital Heart Disease Referred for Surgery: Analysis and Epidemiological Description in the Cardiology Department of CHU Ignace Deen

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World Journal of Cardiovascular Diseases 2024年第4期14卷 234-251页

作者： Bah mamadou Bassirou Diallo mamadou Tahirou Doumbouya Amadou Dioulde Balde Elhadj Yaya Camara Abdoulaye Diallo mamadou Balde Thierno Siradio Bah Abdoulaye Bah mamadou Dian Samoura Sana Balde mamadou Dadhi Cardiology Department of the Ignace Deen Hospital Conakry Guinea

Introduction: Congenital heart disease includes all cardiac and vascular malformations. It accounts for approximately one third of all congenital malformations and is a public health problem, particularly in developing countries. The aim of this study was to analyze the epidemiological, clinical and paraclinical aspects of congenital heart disease. Methods: This was a retrospective descriptive and analytical study based on the records of 135 patients referred for surgery and followed up in the cardiology department of the Ignace Deen University Hospital, collected in November 2022. Results: Hospital prevalence was 5%. The mean age was 71 months, ranging from 1 month to 19 years. The age group over 24 months was the most represented (62%). The M/F sex ratio was 1.36. Urban origin was predominant (58%). The rate of children not attending school or dropping out was high (16%). Siblings with fewer than 4 children were the most common (88%). A heart murmur was the most frequent sign (78%), followed by cyanosis (36%) and heart failure (29%). The association between heart murmurs and CHD was proven with a p-value Conclusion: CHDs represent the main indication for paediatric cardiac surgery and follow-up (95%). We stress the importance of implementing a screening and management strategy for congenital heart disease.

关键词： Congenital Heart Disease Cardiology Epidemiology Surgery Ignace Deen University Hospital

Overview of Factors Affecting Dust Deposition on Photovoltaic Cells and Cleaning Methods

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Smart Grid and Renewable Energy 2024年第1期15卷 49-78页

作者： mamadou Tamboura Ekaterina Alexandrovna Gosteva Institute of New Materials National University of Science and Technology MISIS Moscow Russia

Dust deposition on the surface of photovoltaic (PV) cells poses a significant challenge to their efficiency, especially in arid regions characterized by desert and semi-desert conditions. Despite the pronounced impact of dust accumulation, these regions offer optimal solar radiation and minimal cloud cover, making them ideal candidates for widespread PV cell deployment. Various surface cleaning methods exist, each employing distinct approaches. Choosing an appropriate cleaning method requires a comprehensive understanding of the mechanisms involved in both dust deposition on module surfaces and dust adhesion to PV cell surfaces. The mechanisms governing dust deposition and adhesion are complex and multifaceted, influenced by factors such as the nature and properties of the dust particles, environmental climatic conditions, characteristics of protective coatings, and the specific location of the PV installation. These factors exhibit regional variations, necessitating the implementation of diverse cleaning approaches tailored to the unique conditions of each location. The first part of this article explores the factors influencing dust deposition on PV cell surfaces, delving into the intricate interplay of environmental variables and particle characteristics. Subsequently, the second part addresses various cleaning methods, offering an analysis of their respective advantages and disadvantages. By comprehensively examining the factors influencing dust accumulation and evaluating the effectiveness of different cleaning strategies, this article aims to contribute valuable insights to the ongoing efforts to optimize the performance and longevity of photovoltaic systems in diverse geographical contexts.

关键词： Solar Energy Dust Deposition Cleaning Methods

Causes and Prognosis of Cases of Acute Obstructive Renal Failure Managed at the Donka National Hemodialysis Center

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Open Journal of Nephrology 2024年第2期14卷 136-146页

作者： Amadou Yaya Diallo mamadou Mouctar Diallo mamadou Dian Barry Kadiatou mamadou Bobo Barry Saikou Oumar Diallo Djenabou Diallo Soriba Bangoura mamadou Malal Diallo Thierno mamadou Oury Diallo Mohamed Lamine Kaba Alpha Oumar Bah Department of Nephrology-Hemodialysis CHU Donka Conakry Guinea Faculty of Health Sciences and Techniques Gamal Abdel Nasser University of the Republic of Guinea Conakry Guinea Department of Urology-Andrology CHU Ignace Deen Conakry Guinea

Introduction: Acute obstructive renal failure (AORF) is a frequent clinical situation, secondary to obstruction of the urinary excretory tract. Whatever the cause, urinary tract obstruction suddenly opposes glomerular filtration and is responsible for tubulointerstitial lesions. It accounts for 10% of acute renal failure (ARF). The aim of this study was to identify the causes and prognosis of cases of acute obstructive renal failure managed at the Centre National d’hémodialyse Donka. Material and Methods: This was a prospective descriptive study lasting 6 months, from September 1, 2022 to February 29, 2023. All patients undergoing haemodialysis for acute obstructive renal failure who agreed to participate in the study and whose medical records were complete were included. Results: During the course of the study, we registered 97 haemodialysis patients, including 20 cases (20.62%) of acute obstructive renal failure. The mean age of the patients was 57.8 ± 10.54 years, with a male predominance of 11 cases (55%) and a sex ratio of 1.22. The reasons for consultation were dominated by physical asthenia 11 cases (55%), lumbar pain 9 cases (50%), vomiting 6 cases (30%) and acute urine retention 6 cases (30%). Arterial hypertension 16 cases (80%) and urinary tract infection 10 cases (50%) were the most common antecedents. The etiologies of RAOI were dominated by lithiasis 10 cases (50%), neoplasia 6 cases (30%) and benign prostatic hypertrophy 3 cases (15%). mean creatinine was 1267.60 ± 710.76 μmol/l with extremes of 243 μmol/l and 2822 μmol/l, mean urea was 39.56 ± 18.36, hyperkalemia in 14 cases (70%) and hyponatremia in 8 cases (40%). After hemodialysis, 9 cases (45%) recovered renal function, 4 cases (20%) became chronic and 7 cases (35%) died. Conclusion: The frequency of AKI remains non-negligible in our department, and early detection and prompt management would considerably reduce the morbidity and mortality associated with this pathology.

关键词： Acute Obstructive Renal Failure Hemodialysis Prognosis Donka

Investigation of Anthropogenic Activities along the Mamouwol River in the Urban Commune of Mamou (Republic of Guinea)

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Journal of Environmental Science and Engineering(A) 2024年第1期13卷 15-22页

作者： mamadou Lamarana Souaré Saran Camara Adama Moussa Sakho mamadou Madaniou Sow Laboratory Technique Higher Institute of Technology of MamouMamou 063Republic of Guinea IRLA-Guinea Laboratory Institute for Applied Language Research(IRLA)Conakry 2201Republic of Guinea

The monitoring of our watercourses for their preservation must be an imperative concern of the whole *** aim of this study is to describe the main causes of degradation and destruction of the natural resources of the Mamouwol River in the Mamou *** were collected using a survey method(questionnaire,interviews and observations).The study revealed that extensive agro-pastoral activities are the main socio-economic activity of the population,accounting for 78.5%-90%and 20.30%*** follows(1.2%).Related activities include handicrafts and petty trade;Other human activities:hunting(11%),charcoal burning(58%),brick making and firing(45.6%).Riverbanks and water resources in the vicinity of dwellings are damaged and polluted by socio-economic activities and the use of agricultural *** absence of industrial units on the path for the data collection.

关键词： Natural resources human activity degradation Mamouwol River Mamou.

Oesophageal Mycosis: Epidemiological and Clinical Aspects and Risk Factors for Occurrence in the Digestive Endoscopy Unit of the Donka National Hospital, Conakry CHU

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Open Journal of Gastroenterology 2024年第2期14卷 31-40页

作者： Diallo mamadou Sarifou Youssouf Oumarou Yaogo Abdoulatif Diallo Kadiatou Diallo Djéinabou Wann Thierno Amadou Bah mamadou Lamine Yaya Diakhaby mamadou Kanté mamadou Aliou Sylla Djibril Hepato-Gastroenterology Department of the Donka National Hospital Conakry Guinea Faculty of Health Sciences and Techniques Gamal Abdel Nasser University Conakry Guinea Centre Hospitalier Universitaire Communautaire de Bangui Internal Medicine Department Bangui République Centrafricaine Hepato-Gastroenterology Department Angré University Hospital Abidjan Ivory Coast Department of Internal Medicine Donka National Hospital Conakry Guinea

Introduction: Oesophageal mycosis (OM) is one of the most common opportunistic infections in patients infected with HIV (Human Immunodeficiency Virus). However, this condition is increasingly observed in immunocompetent subjects. The aim of this study was to determine the endoscopic prevalence, clinical characteristics and risk factors for the occurrence of oesophageal mycosis in our department. Patients and Method: This was a prospective cross-sectional study of all patients who underwent oeso-gastroduodenal fibroscopy during the period from 1st January to 31st December 2022, i.e. one year, at the digestive endoscopy unit of the hepato-gastroenterology department of the Donka CHU national hospital in Conakry. All patients found to have oesophageal mycosis by FOGD were included. The endoscopy was performed using appropriate equipment: A Fujinon 4400 video endoscopy column;Three Fujinon EG 590 video gastroscopes;A hoover;Data were collected using a pre-established survey form and analysed using Epi info software version 6.0.4;Pearson’s Chi2 test as a test of independence and the exact 5% threshold ficher test. Results: Out of 1343 upper gastrointestinal endoscopies performed, 107 cases of oesophageal mycosis were found, representing a prevalence of 7.96%. The mean age was 40 years, with a male predominance of 55.42%. The sex ratio M/F was 1.24. The 45 and over age group was the most affected, with a prevalence of 40.43%, followed by the [35 - 45] age group, with a prevalence of 22.43%. Clinical symptoms were dominated by epigastralgia in 74.76% of cases, followed by odynophagia in 37.38% of cases, nausea and vomiting in 28.03% of cases, and pyrosis in 26.16% of cases. Oesophageal mycosis without oesophagitis was the most common endoscopic finding in 70% of cases. The main associated endoscopic lesions were erythemato-erosive and congestive gastropathy in 28.03% of cases, peptic oesophagitis (9.34%) and gastric ulcer (5.60%). The main risk factor

关键词： Endoscopy CHU Conakry Risk Factors Immunosuppression Oesophageal Mycosis

Practice of Glycemic Self-Monitoring in Diabetic Patients Followed at the Endocrinology Department of Donka University Hospital in Guinea

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Open Journal of Endocrine and Metabolic Diseases 2024年第2期14卷 33-38页

作者： mamadou Dian Mamoudou Diallo mamadou Mansour Diallo mamadou Chérif Diallo Alpha mamadou Diallo Kadija Dieng Abdoul Mazid Diallo Mody Abdoulaye Barry Kadidiatou Bah El’Hadj Zainoul Bah mamadou Alpha Diallo Ibrahima Condé Ousmane Kourouma Amadou Kaké Diabetology Unit Labe Regional Hospital Labé Guinea Faculty of Health Sciences and Techniques Gamal Abdel Nasser University of Conakry Conakry Guinea Endocrinology and Diabetology Department of Donka University Hospital Conakry Guinea Pediatrics Department of Donka University Hospital Conakry Guinea

Diabetes is a chronic pathology whose evolution is marked by micro and macroangiopathic complications. Optimal management can prevent the onset of complications and improve patients’ quality of life. Objectives: To determine the frequency of self-monitoring of blood glucose and to describe the errors found during self-monitoring in diabetic patients followed at the Endocrinology Department of Donka University Hospital in Guinea. Materials and methods: Descriptive cross-sectional study carried out between August and September 2020 involving diabetic patients followed up at the Endocrinology and Diabetology Department of the Donka National Hospital, CHU Conakry. Results: A total of 301 patients were enrolled, with an average age of 44.24 ± 21.01 years. 64.12% were female. Type 2 diabetes predominated in 64% of cases. The mean duration of diabetes was 6.14 ± 4.67 years, and 75.08% of patients lived in urban areas. Patients were on insulin in 36.21% of cases, insulin and biguanides (26.25%), hypoglycemic sulfonamide and biguanides (19.27%) and biguanides in 18.27% of cases. The frequency of self-monitoring of blood glucose was 43%, and 38% of patients made errors, notably reusing lancets (60%), not checking the expiration date (55.65%) and not washing their hands (48%). Conclusion: This study shows that self-monitoring of blood glucose is not performed by the majority of patients. Numerous errors were identified during blood glucose testing. Continued therapeutic education on the use of blood glucose meters will help empower patients and improve their quality of life.

关键词： Self-Monitoring of Blood Glucose Diabetes Conakry University Hospital