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A Local Asymptotic Behavior for Ruin Probability in the Renewal Risk Model

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Wuhan University Journal of Natural Sciences 2007年第3期12卷 407-411页

作者： MODIBO diarra School of Mathematics and Statistics Wuhan University

Let R（t）=u＋ct-∑ I=1^N（t） Xi,t≥0 be the renewal risk model, with Fx（x）being the distribution function of the claim amount X. Let ψ（u） be the ruin probability with initial surplus u. Under the condition of Fx（x） ∈ S^＊（γ）,y ≥ 0, by the geometric sum method, we derive the local asymptotic behavior for ψ（u,u ＋ z] for every 0 （ z （ oo, On one hand, the asymptotic behavior of ψ（u） can be derived from the result obtained. On the other hand, the result of this paper can be applied to the insurance risk management of an insurance company.

关键词： renewal risk model subexponential class ruin probability

An Efficient Image Analysis Framework for the Classification of Glioma Brain Images Using CNN Approach

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Computers, Materials & Continua 2020年第6期63卷 1133-1142页

作者： Ravi Samikannu Rohini Ravi Sivaram Murugan Bakary diarra Faculty of Electrical Engineering Botswana International University of Science and TechnologyPalapyeBotswana Faculty of Computer Science Engineering Vivekanandha College of Engineering for WomenNamakkal637205India Department of Computer Networking Lebanese French UniversityErbil44001Iraq Institute of Applied Sciences University of SciencesTechniques and Technologies of BamakoBamakoMali

The identification of brain tumors is multifarious work for the separation of the similar intensity pixels from their surrounding *** detection of tumors is performed with the help of automatic computing technique as presented in the proposed *** non-active cells in brain region are known to be benign and they will never cause the death of the *** non-active cells follow a uniform pattern in brain and have lower density than the surrounding *** Magnetic Resonance(MR)image contrast is improved by the cost map construction *** deep learning algorithm for differentiating the normal brain MRI images from glioma cases is implemented in the proposed *** technique permits to extract the linear features from the brain MR image and glioma tumors are detected based on these extracted *** k-mean clustering algorithm the tumor regions in glioma are *** proposed algorithm provides high sensitivity,specificity and tumor segmentation accuracy.

关键词： Brain glioma features tumors classifications

Urban schistosomiasis and associated determinant factors among school children in Bamako, Mali, West Africa

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Infectious Diseases of Poverty 2015年第1期4卷 24-35,23页

作者： Abdoulaye Dabo Adama Z diarra Vanessa Machault Ousmane Touré diarra Sira Niambélé Abdoulaye Kanté Abdoulaye Ongoiba Ogobara Doumbo Department of Epidemiology of Infectious Diseases Faculty of MedicinePharmacy and DentistryUniversity of Techniques and Technologies of BamakoBox 1805Bamako UMI 3189Mali Unitéd’entomologie médicale Equipe 7Maladiesémergentes et moustiquesInstitut de Médecine Tropicale du Service de Santédes ArméesAllée du Médecin Colonel JamotParc du PharoBP6010913262Marseille Cedex 07France

Background:Schistosomiasis is classically described as a rural disease that occurs in areas with poor sanitary ***,over recent decades,there has been an expansion of schistosomiasis foci towards urban areas faced with a rapid and disordered *** Bamako,Mali,the impact of environmental change on vector-borne diseases such as schistosomiasis is not well *** study sought to identify the presence of schistosomiasis transmission hotspots in *** this perspective,we aimed to describe the risk factors of the endemization and maintenance of *** and methods:A cross-sectional study was carried out in the six municipalities(communes)in *** information was obtained from earth observation satellites in order to maximize ecological ***-nine blocks of 200 m x 200 m were *** selected a school inside or nearest to each block for urine and stool samples *** study cohort was school children aged between eight and 15 *** Kato-Katz technique and filtration were used for Schistosoma mansoni and *** ova research in stools and urine,*** schools and snail breeding sites were *** malacological surveys were conducted between October 2011 and February *** analysis was used to identify independent predictors of being infected with ***:The prevalence rate of *** was 14.7%(n=1,761)and that of *** 1.5%(n=1,491).Overall,the urinary form was endemic in 76.6%of *** infection significantly varied between the municipalities(p<0.001).It was also more prevalent on the left side of the Niger River than the right side(17.4%vs.9.5%respectively;p<0.001).The vicinity to snail breeding sites(OR=3.677;95%IC[2.765–4.889];p<10-3)and parents’occupations(OR=7.647;95%IC[2.406–24.305];p<0.001)were the most important risk factors associated with *** infection *** pfeifferi,Bulinus

关键词： Schistosomiasis Snails Breeding sites Endemization Bamako Mali

The Malian North Crisis(2011-2019):Actors And Factors

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The Malian North Crisis(2011-2019):Actors And Factors

作者： Mody diarra 华中师范大学

学位级别：硕士

马里北部危机是自2012年以来在马里发生的武装冲突,此前萨拉菲斯特亲阿扎瓦德的圣战组织和支持独立的组织发动叛乱。这是萨赫勒战争和图阿列格叛乱马里国家的一部分。自2011年最后两个月以来,小规模冲突就开始了,这就是为什么我们的主... 详细信息

马里北部危机是自2012年以来在马里发生的武装冲突,此前萨拉菲斯特亲阿扎瓦德的圣战组织和支持独立的组织发动叛乱。这是萨赫勒战争和图阿列格叛乱马里国家的一部分。自2011年最后两个月以来,小规模冲突就开始了,这就是为什么我们的主题标题"马里北方危机(2011-2019年)"的参与者、因素和影响中提到了这一点。这是一场跨时很长的冲突,虽然有过和平协议(阿尔格和平协定,1992年),但和平是脆弱的。马里国家腐败盛行,来自国际社会的发展援助被转用于其他目的。此外,这个地区的一些人仍然有分离倾向。冲突是利比亚内战的后果之一:卡扎菲政权被推翻后,武装集团洗劫军事武库,而图阿列格雇佣军为阿拉伯利比亚民众国服务,逃往撒哈拉,加入反政府武装运动携带武器和行李。本研究着重探讨马里北部危机在2011年和平协议签署后如何开始,不同的参与各方以及利益诉。国际社会对于马里北部危机的安全担忧主要在于马里可能由此陷入一个失败国家的境地,由伊斯兰极端分子控制,以该地区为据点向全球输出恐怖全球输出恐怖主义。马里的事件表明,该国北部已成为伊斯兰极端分子的新避风港。法国、区域和国际组织、国家和非国家行为者参与冲突,证明马里危机是涉及不同利益和价值观的多个行为者的事件。。其中一部分原因也与2012年的军事政变有关。这本研究的目的是分析和全面了解2012年马里危机,并提出必要的处方,旨在确保持久和平,促进这个饱受战争蹂躏的国家的社会经济增长。

关键词：硕士学位论文,military,political,萨赫勒,French,极端分子,列格,armed,社会经济增长,国家行为,

Effects of drinking water supplementation with Lactobacillus reuteri,and a mixture of reuterin and microcin J25 on the growth performance,caecal microbiota and selected metabolites of broiler chickens

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Journal of Animal Science and Biotechnology 2022年第4期13卷 1209-1221页

作者： Liya Zhang Laila Ben Said Nadège Hervé Séverine Zirah Moussa Sory diarra Ismail Fliss Institute of Nutrition and Functional Foods UniversitéLavalQCQuébecCanada Sollio Agriculture MontréalQCCanada Molécules de Communication et Adaptation des Microorganismes Muséum National d’Histoire NaturelleParisFrance Guelph Research and Development Centre Agriculture and Agri-Food CanadaGuelphONCanada.

Background:Since the overuse of antibiotics in animal production has led to a selection of antibiotic-resistant pathogens that affect humans and animals as *** are therefore searching for novel natural alternatives to *** this study Lactobacillus reuteri and a combination of reuterin and microcin J25(RJ)were evaluated as promoters of growth and modulators of the cecal microbiota and metabolite profiles in broiler ***-old Cobb 500 male broilers were distributed to 8 treatments:negative control(without antibiotic),positive control(bacitracin),three concentrations of RJ and three doses of *** plus *** birds(2176,34 per pen,8 pens per treatment)were reared for 35 ***:The body weight of the bacitracin and 5 mmol/L reuterin combined with 0.08μmol/L microcin J25(10RJ)treatment group was significantly higher than that of the negative control group(P<0.05).*** had no significant effect on broiler *** high-throughput sequencing of 16S rRNA showed clustering of cecal microbial operational taxonomic unit diversity according to *** influence of bacitracin and 10RJ on bacterial community overall structure was *** promoted Ruminococcaceae,Lachnospiraceae and Lactobacillaceae,increased the relative abundance of Faecalibacterium and decreased the abundance of Bacteroides and Alistipes,while the negative control condition favored Bacteroidaceae and ***,10RJ increased the concentration of short-chain fatty acid in the cecum and changed the metabolome ***:These overall suggest that 10RJ can promote a host-friendly gut environment by changing the cecal microbiome and *** combination of natural antimicrobial agents in the drinking water had a positive effect on broiler growth and may be suitable as an alternative to antibiotic growth promoters.

关键词： Broiler chicken Lactobacillus reuteri Metabolome Microbiome Microcin J25 Reuterin SCFA

Ear Cholesteatoma Surgery in South Sahara: Our Experience in Bamako

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International Journal of Otolaryngology and Head & Neck Surgery 2024年第4期13卷 293-303页

作者： Kassim diarra oumou Coulibaly Yaya Dembele Nfaly Konaté Sidibe Youssouf Saydi Ag Mohamed Harouna Sanogo Abraham diarra Ibrahim Fofana Moussa Bourama Keita Youssouf Traore Fatogoma Issa Koné Boubacary Guindo Siaka Soumaoro Doumbia Kadidiatou Singare Mohamed Amadou Keita ORLCCF Department Gabriel Toure University Hospital Bamako Mali ORLCCF Unit Kati Army Polyclinics Kati Mali ENT-CCF Department CHU Luxembourg Bamako Mali ORLCCF Service of the Reference Center of Commune VI Sogoniko Bamako Mali

In Mali, cholesteatoma surgery remains a challenge due to the limited number of otological practitioners, and the low socio-economic level of patients reflecting the difficulties in performing CT or MRI for post-operative follow-up. We therefore initiated this work with the objective of analyzing, through a broad bibliographic review, the clinical, paraclinical, topographical, therapeutic and progressive aspects of a series of ear cholesteatoma. Materials and Method: This was a retrospective and prospective, descriptive study that took place in the ENT and head and neck surgery department of the Gabriel Touré University Hospital over 36 months from November 2020 to October 2023. These were patients admitted to the department for chronic cholestematous otitis media. Result: In total, we collected 34 files of patients admitted for cholesteatoma. This represented 9% of cases compared to all otological surgeries carried out during the same period, i.e. 362 cases. The average age of our patients was 35.31 years, with extremes ranging from 7 years to 80 years, there were 24 men and 10 women, i.e. a M/F ratio of 2.4. The average time to diagnosis was 7 years. The main functional signs were dominated by chronic fetid purulent otorrhea associated with hypoacusis in 94.6% of cases. One case of meningeal complication and three cases of cerebral empyema were reported. Clinically, a postero-superior and marginal tympanic perforation was observed in 53%, a retraction pocket in 5.9%, the sentinel polyp in 9%, and a non-marginal tympanic perforation in 32%. Pure-tone audiometry performed preoperatively for all patients showed conductive hearing loss in 83%. In 82% of cases we created a recess with the creation of a mini box. An ossiculoplasty was performed immediately with fragments of cartilage. The postoperative course found the disappearance of otorrhea (88.23%), the persistence of otorrhea in one case, two cases of facial paralysis, and one case of tinnitus. We did not identify

关键词： Cholesteatoma CT TTO TTF

Problems of Contraception in Commune IV of the District of Bamako about 109 Cases

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Advances in Breast Cancer Research 2023年第3期12卷 77-96页

作者： Sirama diarra Birama Traore Yacouba Dembele Brahima Dembele Salif diarra Dessé diarra Amaguiré Saye Gynecology and Obstetrics Department at the District Hospital of Commune IV Bamako Mali Gynecology and Obstetrics Department of the CSREF of San Bamako Mali Hospital Practitioner at the CSREF of Sikasso Bamako Mali Hospital Practitioner at the CSREF of Commune I Bamako Mali

In Mali, the low utilization of reproductive health services in general and family planning (FP) in particular contributes strongly to illnesses or deaths of women during and/or after childbirth and of children under the age of one year. This situation is, among other things, the logical consequence of harmful practices, including closely spaced pregnancies, early pregnancies, clandestine abortions, access difficulties and the lack of adequate obstetric and neonatal care. Objective: The objective of our study was to study the difficulties of access to contraception in the health district of commune IV. Methodology: This was a descriptive and multicenter prospective cross-sectional study, carried out in the reference health center of commune IV in the district of Bamako, in the ten (10) CSCOMs and the RENEE CISSE maternity hospital (MRC). Study appalled from June 1 to December 30, 2019. Two subgroups of the study population were involved in the study: Service providers;Users (clients) made up of women of childbearing age (13 - 45 years old). The premises of the FP units, the service providers, the clients who answered our questionnaires constituted our sample;the interviewed providers were also evaluated for their capacity in Counseling with the different methods used. The variables retained for the analysis concerned: the provision of contraceptive products;as well as user files and their characteristics. Results: The result of our survey reveals that the method most used at the time of our survey was Norplant 49.5% and the least used is the pill 1.8;some products, such as the diaphragm, cervical cap, female condom and spermicide, are not available in the various FP units. Side effects were the cause of discontinuation for 17.9% of our clients;50% against the husband;10.7% for no reason;21.4% for desire for children. 87.2% of clients are satisfied with the service delivery compared to 12.8%. 79.8% of clients say that the cost of contraceptive products is affordable

关键词： Problem Contraception Bamako (Mali)

Production systems and important antimicrobial resistant-pathogenic bacteria in poultry:a review

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Journal of Animal Science and Biotechnology 2023年第2期14卷 481-500页

作者： Philip H.W.Mak Muhammad Attiq Rehman Elijah G.Kiarie Edward Topp Moussa S.diarra Guelph Research and Development Centre Agriculture and Agri-Food Canada(AAFC)GuelphONCanada Department of Animal Biosciences University of GuelphGuelphONCanada London Research and Development Center AAFCLondonONCanada.

Economic losses and market constraints caused by bacterial diseases such as colibacillosis due to avian pathogenic Escherichia coli and necrotic enteritis due to Clostridium perfringens remain major problems for poultry producers,despite substantial efforts in prevention and *** have been used not only for the treatment and prevention of such diseases,but also for growth ***,these practices have been linked to the selection and spread of antimicrobial resistant bacteria which constitute a significant global threat to humans,ani-mals,and the *** break down the antimicrobial resistance(AMR),poultry producers are restricting the antimicrobial use(AMU)while adopting the antibiotic-free(ABF)and organic production practices to satisfy consum-ers’***,it is not well understood how ABF and organic poultry production practices influence AMR profiles in the poultry gut *** Gram-negative(Salmonella enterica serovars,Campylobacter jejuni/coli,***)and Gram-positive(Enterococcus spp.,Staphylococcus *** ***)bacteria harboring multiple AMR determinants have been reported in poultry including organically-and ABF-raised *** this review,we discussed major poultry production systems(conventional,ABF and organic)and their impacts on AMR in some potential pathogenic Gram-negative and Gram-positive bacteria which could allow identifying issues and opportuni-ties to develop efficient and safe production practices in controlling pathogens.

关键词： Antibiotic-free Antimicrobial resistance Conventional feeding Organic Poultry

Epidemiology for public health practice:The application of spatial epidemiology

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World Journal of Diabetes 2022年第7期13卷 584-586页

作者： Longjian Liu Garvita Nagar Ousmane diarra Stephanie Shosanya Geeta Sharma David Afesumeh Akshatha Krishna Epidemiology and Biostatistics Drexel University Dornsife School of Public HealthPhiladelphiaPA 19104United States

Spatial epidemiology is the description and analysis of geographic patterns and variations in disease risk factors,morbidity and mortality with respect to their distributions associated with demographic,socioeconomic,environmental,health behavior,and genetic risk factors,and time-varying *** the Letter to Editor,we had a brief description of the practice for the mortality and the spacetime patterns of John Snow's map of cholera epidemic in London,United Kingdom in *** map is one of the earliest public heath practices of developing and applying spatial *** the early history,spatial epidemiology was predominantly applied in infectious disease and risk factor ***,since the recent decades,noncommunicable diseases have become the leading cause of death in both developing and developed countries,spatial epidemiology has been used in the study of noncommunicable *** the Letter,we addressed two examples that applied spatial epidemiology to cluster and identify stroke belt and diabetes belt across the states and counties in the United *** to any other epidemiological study design and analysis approaches,spatial epidemiology has its *** should keep in mind when applying spatial epidemiology in research and in public health practice.

关键词： Diabetes mellitus Spatial epidemiology Diabetes belt Public health practice