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BP neural network model for material distribution prediction based on variable amplitude anti-blocking screening DEM simulations

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International Journal of Agricultural and Biological Engineering 2023年第4期16卷 190-199页

作者： Zheng ma Yongle Zhu Zhiping Wu Souleymane Nfamoussa traore Du Chen Licheng Xing School of Agricultural Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Key Laboratory of Modern Agricultural Equipment and Technology Ministry of Education&Jiangsu ProvinceJiangsu UniversityZhenjiang 212013JiangsuChina Key Laboratory for Theory and Technology of Intelligent Agricultural machinery and Equipment Jiangsu UniversityZhenjiang 212013JiangsuChina College of Engineering China Agricultural UniversityBeijing 100083China Jiangsu World Agricultural machinery Co. Ltd.Picheng Industrial ParkDanyang 212311JiangsuChina

The material feeding changing of combine harvester is easy to cause accumulation and blockage of the vibrating screen,which seriously affects the harvest *** order to alleviate such accumulation and blockages on the vibrating screen surface,the guide chute rotation angle of the improved variable amplitude screening mechanism was selected as the target variable,and EDEM-RecurDyn was employed to simulate the anti-blocking process of the variable amplitude under a changing feeding quantity(0.5 kg/s abnormal,0.2 kg/s normal)of materials(rice grain and stem mixture).A BP(an error back propagation algorithm)neural network was designed and the prediction model of the material distribution was subsequently constructed on the variable screening surface under different chute angles during abnormal *** results revealed a continuous decrease in the quality and time of the material blockage at the front end of the screen surface with the increasing guide chute *** the guide chute angle of 20°-45°and adjustment time of 3-6 s,the blocked and accumulated materials at the front-end screen surface was be moved back to Grid 6 for ***,overtime,the screen surface materials continued to move back under the chute angle of 40°-45°,which had a great impact on the screening *** the guide chute angle of 30°-35°and adjustment time of 4 s,the materials on the screen surface were evenly distributed in Grid *** was able to alleviate the accumulation and blockage of the screen surface *** R of the material distribution prediction model(BP neural network)on the screen surface was determined as 0.97,indicating the high reliability and accuracy of the material distribution model on the screen surface based on the BP neural *** work provides an important reference for the variable amplitude intelligent control of screen surface material anti-blocking.

关键词： variable amplitude material distribution EDEM-RecurDyn BP neural network

Enhancing the reusability and interoperability of artificial neural networks with DEVS modeling and simulation

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International Journal of Modeling, Simulation, and Scientific Computing 2016年第2期7卷 88-108页

作者： David Ifeoluwa Adelani mamadou Kaba traore Department of Computer Science African University of Science and Technology AbujaNigeria LIMOS CNRS UMR 6158 Universit´e Blaise PascalClermont-Ferrand 2 Campus des Cezeaux63173 Aubiere

Artificial neural networks(ANNs),a branch of artificial intelligence,has become a very interesting domain since the eighties when back-propagation(BP)learning algorithm for multilayer feed-forward architecture was introduced to solve nonlinear *** is used extensively to solve complex nonalgorithmic problems such as prediction,pattern recognition and ***,in the context of a holistic study,there may be a need to integrate ANN with other models developed in various paradigms to solve a *** this paper,we suggest discrete event system specification(DEVS)be used as a model of computation(MoC)to make ANN models interoperable with other models(since all discrete event models can be expressed in DEVS,and continuous models can be approximated by DEVS).By combining ANN and DEVS,we can model the complex configuration of ANNs and express its internal ***,we are extending the DEVS-based ANN proposed by Toma et al.[A new DEVS-based generic art-ficial neural network modeling approach,The 23rd European Modeling and Simulation Symp.(Simulation in Industry),Rome,Italy,2011]for comparing multiple configuration parameters and learning algorithms and also to do *** DEVS models are described using the high level language for system specification(HiLLS),[ma¨ıga et al.,A new approach to modeling dynamic structure systems,The 29th European Modeling and Simulation Symp.(Simulation in Industry),Leicester,United Kingdom,2015]a graphical modeling language for *** developed platform is a tool to transform ANN models into DEVS computational models,making them more reusable and more interoperable in the context of larger multi-perspective modeling and simulation(maS).

关键词： Artificial neural networks DEVS Z-schema reusability interoperability HiLLS learning algorithm modeling and simulation

BP神经网络预测变振幅防堵筛分性能研究——基于EDEM-RecurDyn仿真

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中国农机化学报 2022年第11期43卷 75-80页

作者：朱永乐马征陈树人 Souleymane Nfamoussa traore 李耀明姜晟江苏大学现代农业装备与技术教育部重点实验室江苏镇江212013 江苏大学农业工程学院江苏镇江212013

针对物料喂入量变化导致振动筛面堆积堵塞,影响筛分性能的问题。以变振幅筛分机构导向滑槽转角为变量,RecurDyn和EDEM联合仿真水稻籽粒、茎秆非正常喂入(0.5 kg/s)条件下变振幅防堵筛分过程。BP神经网络预测不同滑槽转角下变振幅的筛分... 详细信息

针对物料喂入量变化导致振动筛面堆积堵塞,影响筛分性能的问题。以变振幅筛分机构导向滑槽转角为变量,RecurDyn和EDEM联合仿真水稻籽粒、茎秆非正常喂入(0.5 kg/s)条件下变振幅防堵筛分过程。BP神经网络预测不同滑槽转角下变振幅的筛分效率、含杂率,优化变振幅调节,缓解筛面堆积堵塞,改善筛分性能。结果表明物料非正常喂入(0.5 kg/s)下导向滑槽转角0°~10°时筛分效率在55%~58%内平稳上升,含杂率在0.1%~0.16%内小范围波动变化;滑槽转角15°~40°时筛分效率在58%~75%内线性增大,含杂率在0.11%~0.19%内波动上升;滑槽转角40°~45°时筛分效率骤然线性下降至65.8%,含杂率陡然升高至0.37%。BP神经网络预测滑槽转角在37°时变振幅筛分效率最高、含杂率较低,变振幅防堵筛分性能更好,此时筛分效率和含杂率为74.30%、0.20%。BP神经网络预测模型R^(2)为0.999,预测误差集中在-0.00041,预测曲线均高度拟合。验证了BP神经网络预测模型的可靠性和精确度。这为未来变振幅防堵筛分的智能化调控提供了依据。

关键词：变振幅 EDEM-RecurDyn BP神经网络筛分效率含杂率

东鞍山难选铁矿石中菱铁矿的综合利用试验研究

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中国矿业 2011年第10期20卷 70-74页

作者： ma.a.a.ou A traore 印万忠马英强卢冀伟冀秀荣东北大学辽宁沈阳110819 广东省矿产应用研究所广东韶关512026

分步浮选法成功解决了东鞍山含菱铁矿铁矿石的分选。本文针对分选出的含菱铁矿中矿,进行了中性焙烧2返回分步浮选的试验研究。通过优化浮选药剂制度,获得了精矿品位为67.80%、回收率为73.98%、尾矿品位为20.73%、回收率为26.02%良好结果... 详细信息

分步浮选法成功解决了东鞍山含菱铁矿铁矿石的分选。本文针对分选出的含菱铁矿中矿,进行了中性焙烧2返回分步浮选的试验研究。通过优化浮选药剂制度,获得了精矿品位为67.80%、回收率为73.98%、尾矿品位为20.73%、回收率为26.02%良好结果,并用SEM探讨了其对赤铁矿浮选过程的影响。

关键词：菱铁矿赤铁矿难选铁矿石中性焙烧 SEM

Acute Peritonitis at the Reference Health Center of Commune I of the District of Bamako: Epidemiological, Clinical and Therapeutic Aspects

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Surgical Science 2023年第12期14卷 728-737页

作者： Tounkara Cheickna Samake Hamidou maïga Amadou Cisse Alou Hamadoun Diarra Issaka Sanogo Modibo Togola Modibo Dembele Bakary Tientigui traore Alhassane Togo Pierre Adegne Kante Lassana Department of General Surgery Cs Ref of Commune I of Bamako Bamako Mali Central Directorate of Social Service of Army Health Bamako Mali Department of General Surgery Gabriel Toure University Hospital Bamako Mali

Acute peritonitis is most often secondary to perforation of the digestive organ and/or the spread of an intra-abdominal septic focus. The objectives of this work were to study acute peritonitis in the general surgery department of the Cs ref of commune I in mali, to determine the frequency of peritonitis, to describe the epidemiological, clinical and therapeutic aspects in order to analyze the surgical consequences and to assess the additional cost of treating acute peritonitis. This study was prospective, descriptive, cross-sectional involving 40 patients received in the surgery department of the Cs ref of commune I for acute peritonitis from January 1, 2018 to December 31, 2018. There were 40 patients among whom 28 (70%) were men and 12 were women (30%), i.e. a sex ratio = 2.3. The average age was 25 years with extremes varying between 16 and 54 years and a standard deviation of 11.78. Abdominal pain was the main reason for consultation. Clinical examination alone made it possible to make the diagnosis in 75% of cases. Surgical treatment depended on the intraoperative etiology. The clinical diagnosis was supported by ASP and abdominal ultrasound;performed respectively in 10% and 90% of patients. Appendiceal peritonitis was the intraoperative diagnosis observed in 50% of cases. All our patients benefited from a peritoneal toilet with drainage. We noted a morbidity rate of 5% dominated by parietal suppuration. The average cost of care was 175,000 FCFA.

关键词： Acute Peritonitis Epidemiology Diagnostic Therapy Surgical Emergencies Cs Ref CI Bamako mali

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东鞍山烧结厂含菱铁矿浮选中矿焙烧机制研究

金属矿山 2011年第4期40卷 54-57,71页

作者： ma.a.a.ou A traore 印万忠李丽匣马英强冀秀荣卢冀伟东北大学

东鞍山烧结厂含菱铁矿浮选中矿经700℃还原焙烧—磁选工艺处理,可以得到品位为60.43%,回收率为83.59%的铁精矿。利用X射线衍射分析和扫描电镜分析手段着重对焙烧过程中铁矿物的转化机制进行了研究,结果表明,随着焙烧温度的改变,焙烧过... 详细信息

东鞍山烧结厂含菱铁矿浮选中矿经700℃还原焙烧—磁选工艺处理,可以得到品位为60.43%,回收率为83.59%的铁精矿。利用X射线衍射分析和扫描电镜分析手段着重对焙烧过程中铁矿物的转化机制进行了研究,结果表明,随着焙烧温度的改变,焙烧过程将经历菱铁矿分解、赤铁矿还原和铁矿物过反应3个阶段,其中赤铁矿还原阶段对应的焙烧温度正是700℃,此时焙烧产品中的铁矿物以磁铁矿为主,最有利于弱磁选。

关键词：菱铁矿赤铁矿浮选中矿还原焙烧机制

Evaluation of the Adequacy between the Workload and the Number of State Midwives and maieuticians Practicing in the Gynecology-Obstetrics Departments of the University Hospitals of Burkina Faso

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Open Journal of Obstetrics and Gynecology 2022年第7期12卷 649-660页

作者： Timongo Françoise Danielle Millogo-traore Pazoudba Rachida marie Joséphine Ouedraogo-Drabo Pierre Yameogo Yalgado Ouédraogo University Hospital Ouagadougou Burkina Faso Regional University Hospital of Ouahigouya Ouahigouya Burkina Faso University Health Coverage of Burkina Faso Burkina Faso

Objective: To evaluate the adequacy between the workload and the number of midwives and state midwives practicing in the gynecology-obstetrics services of the university hospitals of Burkina Faso. Methodology: This is a multicenter study conducted in 4 university hospitals representing this country (for brevity referred here to as A, B, C, and D) from may 1, 2018, to April 30, 2019. The Workload Indicators of Staffing Need (WISN) method was used to analyze the workload. Results: Dystocic delivery was the activity that took the most time. Inpatient activities were the most performed in terms of volume. At the University Hospitals D and C, there was an over-staffing of midwives and maïeuticians with a ratio of 1.93 and 2.12 respectively. At University Hospital B, the workload was in line with the existing number of State midwives and maieuticians. A low workload pressure (04%) was found at the University Hospital A. Conclusion: In most of the University Hospital Centers, there was no match between the workload and the number of midwives and maïeuticians. These results highlight the need for redeplayment of midwives and maïeuticians in order to ensure good health coverage for midwives and maïeuticians.

关键词： Workload Midwives maïeuticians WISN University Hospital Center Burkina Faso

Detection of Low-Risk and High-Risk Oncogenic Human Papillomavirus in Archived Tissues from ENT Tumors in Burkina Faso

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Journal of Biosciences and Medicines 2023年第9期11卷 171-180页

作者： Ali Kandé maïmouna Ilboudo Djénéba Ouermi Ina marie Angèle traore Abdoul Karim Ouattara Théodora mahoukèdè Zohoncon Esther mah Alima traore Florencia W. Djigma Dorcas Obiri-Yeboah Henriette Poaty Yvette marie Chantal Gyebre Olga M. Lompo Charlemagne MR Ouedraogo Jacques Simpore Centre de Recherche Biomoléculaire Pietro Annigoni (CERBA) Ouagadougou Burkina Faso Laboratoire de Biologie moléculaire et de génétique (LABIOGENE) UFR/SVT Université Joseph Ki-Zerbo Ouagadougou Burkina Faso University Post Office Department of Microbiology and Immunology School of Medical Sciences University of Cape Coast Cape Coast Ghana Centre Hospitalier Universitaire Yalgado Ouedraogo Université Joseph Ki-Zerbo Ouagadougou Burkina Faso

Human papillomavirus (HPV) is classified into high-risk HPV (HR-HPV) and HPV (LR-HPV) according to their oncogenic potential. These viruses can be found in the cervix, vagina, vulva, anus and in the ENT sphere. HPV ENT infections can lead to benign or malignant tumors in which we could find both LR-HPV and HR-HPV genotypes. The objective of this study was to investigate the genotypes of HR-HPV and LR-HPV in archived tissue samples derived from both benign and malignant tumors of the ear, nose, and throat (ENT) in Ouagadougou, Burkina Faso. One hundred and twenty formalin-fixed, paraffin-embedded archived tissues of the ENT sphere from 26 benign tumors and 94 malignant tumors were included. The tissues were first deparaffinized with xylem. The extracted DNA was used to test for high-risk and low-risk HPV by Real-Time Multiplex PCR. HPV DNA was found in 57.7% (15/26) of benign tumors and 43.61% (41/94) of malignant tumors. The prevalence of HPV infection was 46.67% (56/120) in all tumors combined. The most common HPV genotypes found were HPV 11 (34.28%), HPV 6 (30%), HPV56 (14.28%) and HPV 33 (8.57%). There were 21.43% (12/56) cases of genotypes co-infections with 10 cases of double infection and 2 cases of triple infection. Both low-risk and high-risk HPV are found in ENT tumors with relatively high HPV prevalence.

关键词： HPV Archived Tissues ENT Tumor Burkina Faso

Rice Growth and Yield in Humid Forest of Cote d＇lvoire as Affected by Different Sources of Phosphates in Ferralsol

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Journal of Environmental Science and Engineering(B) 2013年第11期2卷 648-656页

作者： Fatogoma Sorho Brahima Kone Jean Baptiste Ettien Migninna Joachim traore Edja Fulgence Akassimadou Plant Physiology Bioscience Unit Felix Houphouet Boigny University 22 BP 582 Abidjan 22 Cote d 'Ivoire Department of Soil Science Earth Science Unit Felix Houphouet Boigny University 22 BP 582 Abidjan 22 Cote d 'Ivoire

There is immobilization of inorganic P （phosphorus） fertilizer becoming unavailable to plants and declining yield over cropping seasons is occurring in rice agro-ecology of humid forest. The performances of indigenous PR （rock phosphates） from ma （mali）, Burkina Bu （Faso）, Ni （Niger）, To （Togo） and Senegal including that of Pa （Thies） and Ta （Taiba） were tested applying 200 ***-1 and 400 ***-1 once for three cropping seasons while TSP （triple super phosphate） was applied every season at 60 ***-1 and 120 ***-1. No P-fertilizer treatment was the control plot and WAB 56-104 was sown as rice variety. No significant difference was observed between the overall mean values of plant height, tiller and panicle numbers according to P-sources likewise for the grain yield when comparing that of 60 ***-1 （TSP） vs. treatments of PR while, the treatments Pa, Ta and To significantly induced greater grain yield than 120 ***-1 as TSP. Moreover, declining yield in the third cropping year was greater （75%） with TSP than for To, which was not significantly impacted by the number of cropping seasons. Applying 200 ***-1 of To was suggested as strategy for sustaining rice production on Ferralsol of west Africa.

关键词： Rice Ferralsol phosphorus declining yield forest ecosystem.