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双作用叶片式二次元件的工作机理与性能研究

中国机械工程 2006年第6期17卷 601-604页

作者：臧发业姜继海山东交通学院济南250023 哈尔滨工业大学哈尔滨150001

阐述了双作用叶片式二次元件的结构和工作原理,分析了其变量机理和节能特点,着重研究了双作用叶片式二次元件的转速转矩特性、流量特性和效率特性,探讨了该元件的应用领域。研究结果表明,叶片式二次元件具有较好的转矩和转速可控性,为... 详细信息

阐述了双作用叶片式二次元件的结构和工作原理,分析了其变量机理和节能特点,着重研究了双作用叶片式二次元件的转速转矩特性、流量特性和效率特性,探讨了该元件的应用领域。研究结果表明,叶片式二次元件具有较好的转矩和转速可控性,为减小液压系统的振动、噪声和流量脉动,应采用奇数叶片,双作用叶片式二次元件适合中高压力系统工作,可实现能量的回收与再利用。

关键词：叶片式液压二次元件变量机理节能特性

Analysis of the Effect of Dietary Diversity on Anemia in Women of Reproductive Age in Senegal

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Open Journal of Preventive Medicine 2019年第10期9卷 115-125页

作者： Tine Jean Augustin Diegane faye Adama Department of Preventive Medicine and Public Health of the Cheikh Anta Diop University of Dakar (UCAD) Institut de Sante et Developpement (ISED) UCAD Dakar Senegal

Introduction: Anemia in women of reproductive age is a common health problem in Senegal. The objective of this research was to study the contribution of dietary diversity in the fight against anemia in women of reproductive age in two regions of Senegal using the propensity score method. Methodology: An observational, cross-sectional and analytical study of women of reproductive age and their households was conducted in the Kolda and Kedougou regions in 2015. This was a three-stage random sample survey. The data was collected during an individual interview. Conditional logistic regression was used to identify the risk factor for this anemia. Results: In this study, 1926 women of reproductive age were surveyed. The average age of women of reproductive age surveyed was 27.2 years with a standard deviation of 7.6 years. The median age was 26 years old. Married women were in the majority. Pregnant and lactating women were 43.8%. The percentage of women with adequate diets was 31.5%. The proportion of women with anemia was 51.8%, or 998 women of reproductive age. Adequate dietary diversity is the main factor associated with anemia in these women (OR = 0.75 (0.59 - 0.96)). Conclusion: The prevalence of anemia in women of reproductive age is still high in the southern regions of Senegal. To combat this phenomenon, it is therefore necessary to intensify interventions on the balance of diet, iron and folic acid supplementation in pregnant and lactating women and to strengthen the empowerment of women.

关键词： Anemia Dietary Diversity Woman Senegal

Frailty in People Living with Human Immunodeficiency Virus Aged 50 Years and Older: Prevalence and Predictors

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Midwives’ Professional Satisfaction and the Quality of Obstetric Care in Developing Country

World Journal of AIDS（艾滋病） 2024年第1期 18页

作者： Alassane Ndiaye Ndèye Fatou Ngom Kiné Ndiaye Assiétou Gaye Elhadji Bara Diop Ahmadou Mboup Houlèye Saou Bessoume Sy Ababacar Niang Betty Fall Mame Awa faye

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Open Journal of Obstetrics and Gynecology 2017年第1期7卷 95-106页

作者： Adama faye Pierre Fournier Alexandre Dumont Institute of Health and Development Cheikh Anta Diop University Dakar Sénégal University of Montreal Hospital Research Center (CRCHUM) University of Montreal Montreal Canada Institute of Research for Development UMR 216 University Paris Descartes Sorbonne Paris City Paris France

Introduction: In Africa, poor working conditions affect the motivation of health care providers. The objective is to study midwives’ professional satisfaction on the technical quality of emergency obstetric care in Senegal. Material and Methods: This was a prospective study of 16 hospitals in Senegal. The job satisfaction of midwives was measured during a personal interview. The instrument used was validated in Senegal and Mali. Other data collected relate to professional and institutional characteristics. A treatment observation grid was used to measure the quality of obstetric care in labour wards. Mixed-model linear regression was used to estimate the effect of satisfaction on the quality of obstetric care. Results: A total of 65 midwives were interviewed and 325 patients observed. The average quality score was 8.7 ± 1.7. The satisfaction scores ranged from 42.2 ± 17.4 (salary) to 76.7 ± 12.1 (morale satisfaction). A positive and significant correlation was found between quality of care and management (cc = 0.56), remuneration (cc = 0.40), task (cc = 0.32), workload (cc = 0.24) and training (cc = 0.29). The linear mixed model shows that salary (β = 0.40), continuing education (β = 0.17) and management style (β = 0.42) improved the quality of care. Association between moral satisfaction and quality care was negative (β = ﹣0.53). Conclusion: The satisfaction of health professionals is a major determinant of the quality of obstetric care. Its inclusion in the fight against mortality has become imperative in developing.

关键词： Motivation Satisfaction Quality Care Midwives Senegal

使用Plant Village进行深度学习和特征提取的植物病害检测

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使用Plant Village进行深度学习和特征提取的植物病害检测

作者： MOHAMETH faye 大连理工大学

学位级别：硕士

本文利用深度学习和特征提取技术解决植物病害检测问题。所有测试和实验都是使用开源数据集Plant Village进行的。本文的主要工作是实现三种不同的深度学习模型,即Resnet 50,Google Net和VGG16,并找出其中最适合解决分类问题的网络模型... 详细信息

本文利用深度学习和特征提取技术解决植物病害检测问题。所有测试和实验都是使用开源数据集Plant Village进行的。本文的主要工作是实现三种不同的深度学习模型,即Resnet 50,Google Net和VGG16,并找出其中最适合解决分类问题的网络模型。众所周知,世界人口约为70亿,农作物疾病是世界粮食供应的关键问题,而超过90%的人无法使用能够识别和解决植物病问题的工具或功能。如今,我们生活在一个由大规模技术,主要网络覆盖,高端智能手机以及人工智能的发现和改进所主导的世界中。将高端智能手机和基于深度学习的计算机视觉相结合成为了可能。人们将其定义为“智能手机辅助疾病诊断”。在深度学习领域,学者们已经训练了多种架构模型,其中一些模型的性能达到了99.53%以上。先前的研究是对每种模型分别进行的,每个模型都产生自己的结果。但是,在我们的研究中,我们使用最新的技术将三个先前测试过的深度学习模型（Resnet50,Google Net,VGG16）和两个分类器（SVM和KNN）组合在一起,以便比较获得的结果并找出哪种模型能够更准确且更好地解决植物病害分类问题。在本文中,我们解决了这个问题。实验结果证明Resnet 50是用于特征提取的最佳模型。在迁移学习时,VGG16是最佳选择。此外,与KNN相比,SVM被证明是最佳分类器。

关键词：植物病害检测特征提取迁移学习 SVM KNN

Female Head, Food Stamps, Ethnicity and Air Pollution: Confounders or Causes of Heart Disease in Texas

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Open Journal of Epidemiology 2016年第2期6卷 146-153页

作者： faye Anderson Najla N. Al-Thani Independent Scholars Houston TX USA

One in every four deaths in the United States is attributed to heart disease. While the ethnic variations have not been momentous, the socioeconomic disparities of heart disease incidence need to be further investigated. Moreover, exposure to air pollutants has been documented to cause heart disease. This secondary-data study investigates the effects of air pollutants as well as socioeconomic factors on hospitalization rate of heart disease in Texas. The rates for the five sub-diagnoses of cardiovascular disease, heart attack, stroke, hypertension and heart disease were linked to ozone, fine particulate matter, carbon monoxide, nitrogen dioxide, sulphur dioxide and socioeconomic status factors at the county level. These were college education attainment, households with female heads, percentage of users of food stamps, ethnicities, living near a park and living in houses with severe housing problems. Spatial lag modelling was conducted to estimate the statistical significance of the independent variables on the five sub-diagnoses of heart disease. Fine particulate matter, sulphur dioxide and being African American were significant to all the outcomes. Living in a household with female head was significant to stroke and hypertension. Using food stamps was significant to cardiovascular disease, heart attack and heart disease. Fine particulate matter and sulphur dioxide increase the risk of heart disease by a factor of three to twenty two times, respectively. Whereas low socioeconomic status increases the risk of heart disease by a factor of up to four times. The results of the effect of particulate air and sulphur dioxide pollution among people in low social class especially African Americans. The vicious cycle of heart disease and low socioeconomic status call for societal and policy makers’ attention through methodical interventions to address the two significant issues of industrial facilities site allocation and stationary emission resources.

关键词： Heart Disease Female Head Food Stamps Sulphur Dioxide Particulate Matter

Hydrodynamics and Recharge of the Aioune Sandstone Aquifer in the Taoudenni Transboundary Basin in Mauritania

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Journal of Water Resource and Protection 2018年第7期10卷 681-698页

作者： Bacar Sidi Haiba Teiss Serigne faye Department of Geology Cheikh Anta Diop University Dakar Senegal National Water Resources Center Nouakchott Mauritania

In Mauritanian, 4/5 of the territory is subject to an arid climate, where groundwater resources are the main sources of drinking water for populations and livestock. The study area is located in south-eastern Mauritania and in the western part of the Taoudenni Transboundary Basin. A better knowledge of the hydrogeological system to ensure a sustainable and rational management is necessary for this vulnerable water resource. This pioneering study, based on the compilation of hydrogeological, geochemical and isotopic data, aims to characterize the hydrodynamics and recharge of this one layer aquifer system, composed of Aioune infracambrian sandstone. The piezometric surface exhibits relatively the same morphology of the soil topography, and computed effective velocity is 94 m/yr (Northeast area), and the direction of flow is generally from cliff to plains area. The chemical data show water types evolving between two poles namely the HCO3-Ca/Mg pole (low mineralized), and the Cl-Ca/Na pole;these waters are characterized by a high vulnerability to pollution, especially at shallow depth area (Douerare, Aioune). The dissolution of bicarbonate and evaporate minerals is likely the main source of mineralization. The isotopic tool used to support comprehension of the system functioning, evidences a local indirect recharge water localized at the cliff or Wadi zones. The age of the waters ranges from the present to 1060 year. The recharge rate calculated by 14C and the chloride masse balance is respectively 0.4 to 5 mm/year. This recharge compared to the water pumping rate is lower and hence this imbalance is likely the cause of water shortages particularly during summer season period.

关键词： Aioune Isotopes Hydrochemistry Piezometry Recharge

Plant Disease Detection with Deep Learning and Feature Extraction Using Plant Village

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Journal of Computer and Communications 2020年第6期8卷 10-22页

作者： faye Mohameth Chen Bingcai Kane Amath Sada School of Computer Science & Technology Dalian University of Technology Dalian China School of Computer Science & Technology Xinjiang Normal University Urumqi China

Nowadays, crop diseases are a crucial problem to the world’s food supplies, in a world where the population count is around 7 billion people, with more than 90% not getting access to the use of tools or features that would identify and solve the problem. At present, we live in a world dominated by technology on a significant scale, major network coverage, high-end smart-phones, as long as there are great discoveries and improvements in AI. The combination of high-end smart-phones and computer vision via Deep Learning has made possible what can be defined as “smartphone-assisted disease diagnosis”. In the area of Deep Learning, multiple architecture models have been trained, some achieving performance reaching more than 99.53% [1]. In this study, we evaluate CNN’s architectures applying transfer learning and deep feature extraction. All the features obtained will also be classified by SVM and KNN. Our work is feasible by the use of the open source Plant Village Dataset. The result obtained shows that SVM is the best classifier for leaf’s diseases detection.

关键词： Plant Diseases Detection Feature Extraction Transfer Learning SVM KNN

Family Revolution： Marital Strife in Contemporary Chinese Literature and Visual Culturce

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Frontiers of Literary Studies in China-Selected Publications from Chinese Universities 2017年第2期11卷 418-422页

作者： Xiao, Hui faye Yiyan WANG 不详 Victoria University of Wellington

Family Revolution： Marital Strife in Contemporary Chinese Literature and Visual Culture by Hui Xiao is an excellent original study of contemporary Chinese literature and visual culture. It examines how contemporary storytelling in text and on screen represents the increasing disintegration of marriage, and stages changing attitudes toward marriage in contemporary Chinese society. The time span covered by the study is primarily the three decades starting from the 198os, but the book＇s discussion travels back to key historical moments when social change, intellectual debates, political ideologies, and government polices brought about crucial changes in the practice and perceptions of marriage.

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