检索结果-南通市图书馆

Breast Morphometry in Senegalese Women:Study on a Sample of 118 Subjects

Advances in Breast Cancer Research 2020年第2期9卷 13-20页

作者： Ndeye Bigue Mar Assane ndiaye ainina ndiaye Karim Yacouba Garba Magaye Gaye Sokhna Astou Gawane Thiam Issa Dior Seck Racky Wade Jean Marc Ndiaga Ndoye Mamadou Diop Abdoulaye ndiaye Laboratory of Anatomy and Organogenesis Faculty of MedicinePharmacy and DentistryCheikh Anta Diop UniversityDakarSenegal Training and Research Unit in Health Sciences Assane Seck University of ZiguinchorZiguinchorSenegal

Nowadays, women are more and more resorting to breast surgery for the purposes of isolated esthetics or within the framework of a mammectomy for tumor with its cohort of psychological problems post mutilation often requiring reconstruction. In context of breast cancer increase in Senegal, we have carried out breast morphology in female subjects of the Sahelian type in order to contribute to the development of a morphological database for reconstruction, reduction or breast augmentation. It was a prospective study on 118 female subjects received at Cancer Institute for screening. They were divided into two groups (age ≤ 40 years and age?> 40 years). Subjects’?morphometric variables were collected in anatomical position and correlated with age, parity, obesity and genital activity using. Fifty six subjects (47.5%) were over 40 years of age. There were 40 multiparous (33.9%). Fifteen subjects (12.7%) and six subjects (5%) were obese and morbidly obese, respectively. Subjects in genital activity were 34 (29%). The overall average size of the areola was 4.3 ± 1.5 cm. The nipple was low located with an average of 7.2 ± 3.5 cm. The diameters mentioned above increased significantly with age and body mass index, for p-values ?0.05, with the exception of the vertical diameter. Breast diameters were greater in postmenopausal women. Morphometry of Sahelian-type women’s breast is strongly influenced by socio-demographic data, hence the need to take it into account during reconstruction, reduction or breast augmentation surgeries in Senegal.

关键词： Breasts Morphometry Surgery Sahelian Woman

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Configuration of the Femoral Arterial Bifurcation’s Influence on Its Atherogenesis

引用

Forensic Medicine and Anatomy Research 2020年第2期8卷 45-53页

作者： Magaye Gaye Papa Adama Dieng ainina ndiaye Racky Wade Sidy Diop Ndeye Fatou Sow Papa Amath Diagne Souleymane Diatta Salmane Ba Mourad Boufi Assane ndiaye Amadou Gabriel Ciss Abdoulaye ndiaye Laboratory of Anatomy and Organogenesis-FMPO-UCAD Dakar Senegal Thoracic and Cardiovascular Surgery Department-Fann CHNU Dakar Senegal Vascular Surgery Department North Hospital of Marseille Marseille France Laboratory of Anatomy and Organogenesis-UAS Ziguinchor Ziguinchor Senegal

Several theories point to the influence of the geometry of femoral arterial bifurcation in the formation and evolution of atherosclerosis plaques at the level of common, superficial and deep femoral arteries. The objective of this study is to correlate the degrees of calcifications of the femoral tripod with different morphological parameters, namely conicity, tortuosity, proximal and distal diameters of the arteries and angles between the common femoral artery (CFA) and the superficial femoral artery (SFA) and the profound femoral artery (PFA) and the superficial femoral artery. The results showed that only the tortuosity of the common femoral artery influences the formation of atherosclerosis plaque. These results allow us to predict the degree of calcification of the femoral tripod based on the tortuosity of the common femoral artery.

关键词： Tortuosity Calcification Atherosclerosis Femoral Arterial Bifurcation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

ADEFGuard:Anomaly detection framework based on Ethereum smart contracts behaviours

引用

Blockchain(Research and Applications) 2023年第3期4卷 88-97页

作者： Malaw ndiaye Thierno Ahmadou Diallo Karim Konate Computer Science Department UCAD DakarSenegal Computer Science Department UASZ ZiguinchorSenegal

Smart contracts are the building blocks of blockchain systems that enable automated peer-to-peer transactions and decentralized *** contracts certainly provide a powerful functional surplus for maintaining the consistency of transactions in applications governed by blockchain *** contracts have become lucrative and profitable targets for attackers because they can hold a large amount of *** verification and symbolic analysis have been employed to combat these destructive scams by analysing the codes and function calls,yet each scam's vulnerability should be discreetly *** this work,we introduce ADEFGuard,a new anomaly detection framework based on the behaviour of smart contracts,as a new *** design a learning and monitoring module to determine fraudulent smart contract *** framework is advantageous over basic algorithms in three ***,ADEFGuard provides a unified solution to different genres of scams,relieving the need for code analysis ***,ADEFGuard's inference is orders of magnitude faster than code ***,the experimental results show that ADEFGuard achieves high accuracy(85%),precision(75%),and recall(90%)for malicious contracts and is potentially useful in detecting new malicious behaviours of smart contracts.

关键词： Blockchain Smart contract Security Anomaly

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Numerical Approach of Network Problems in Optimal Mass Transportation

引用

Applied Mathematics 2012年第5期3卷 457-466页

作者： Lamine ndiaye Babacar Mbaye ndiaye Pierre Mendy Diaraf Seck Laboratory of Mathematics of Decision and Numerical Analysis (LMDAN) FASEG University of Cheikh Anta Diop Dakar Senegal Unité Mixte Internationale UMMISCO Institut de Recherche pour le Développement Bondy France

In this paper, we focus on the theoretical and numerical aspects of network problems. For an illustration, we consider the urban traffic problems. And our effort is concentrated on the numerical questions to locate the optimal network in a given domain (for example a town). Mainly, our aim is to find the network so as the distance between the population position and the network is minimized. Another problem that we are interested is to give an numerical approach of the Monge and Kantorovitch problems. In the literature, many formulations (see for example [1-4]) have not yet practical applications which deal with the permutation of points. Let us mention interesting numerical works due to E. Oudet begun since at least in 2002. He used genetic algorithms to identify optimal network (see [5]). In this paper we introduce a new reformulation of the problem by introducing permutations . And some examples, based on realistic scenarios, are solved.

关键词： Optimal Mass Transportation Network Urban Traffic Monge-Kantorovich Problem Global Optimization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Grazing effects on vegetation dynamics in the savannah ecosystems of the Sahel

引用

Ecological Processes 2023年第1期12卷 752-763页

作者： Haftay Hailu Gebremedhn Ousmane ndiaye Sylvanus Mensah Cofélas Fassinou Simon Taugourdeau Torbern Tagesson Paulo Salgado African Center of Excellence for Climate-Smart Agriculture and Biodiversity Conservation Haramaya UniversityP.O.Box 138Dire DawaEthiopia Dispositif en Partenariat«Pôle Pastoralisme Et Zones Sèches» Route du Front de Terre BP 2057Pôle de Recherche de HannISRADakarSenegal Centre de Recherches Zootechniques de Dahra Institut Sénégalais de Recherches AgricolesDakarSenegal Laboratoire de Biomathématiques et d’Estimations Forestières Facultédes Sciences AgronomiquesUniversitéd’Abomey-CalaviCotonouBenin Chair of Forest Growth and Dendroecology Albert-Ludwigs-Universität FreiburgFreiburg Im BreisgauGermany Facultédes Sciences et Techniques Département BVUniversitéCheikh-Anta-DiopDakarSenegal UMR SELMET CIRADINRAEInstitut Agro Univ MontpellierMontpellierFrance Department of Physical Geography and Ecosystem Science Lund UniversitySölvegatan 1222362 LundSweden Department of Geosciences and Natural Resource Management University of CopenhagenØster Voldgade 101350 CopenhagenDenmark

Background The savannah ecosystems of Sahel have experienced continuous and heavy grazing of livestock for centuries but still,their vegetation response to grazing pressure remains poorly *** this study,we analysed the herbaceous plant dynamics,measured by species diversity,composition,cover,and biomass in response to grazing pressure in the savannah ecosystems of *** Senegal,we selected four savannah sites represented with high,moderate,light and no grazing intensity *** survey methods were used for sampling the vegetation data within each of the *** richness and composition were analysed using species accumulation curve and multivariate ***,we used General Linear Models and a piecewise Structural Equation Model(pSEM)to examine the relationships between grazing intensity,vegetation cover,diversity and *** The herbaceous species diversity and composition varied significantly among the different grazing intensity levels(p<0.001).The plant species composition shifted from the dominance of grass cover to the dominance of forb cover with increasing grazing ***,the attributes of species diversity,herbaceous biomass,and ground cover were higher on sites with low grazing than sites with high and moderate grazing *** all sites,species diversity was positively related to total *** pSEM explained 37%of the variance in total biomass and revealed that grazing intensity negatively influenced total biomass both directly and indirectly through its negative influence on species *** Managing grazing intensity may lead to higher plant production and higher mixed forage establishment in the dryland savannah *** information can be used to support land management strategies and promote sustainable grazing practices that balance the needs of livestock with the conservation of ecosystem health and biodiversity.

关键词： Biomass Biodiversity Diodella sarmentosa Forb Grazing intensity Invasive species Pastoral ecosystem Senegal West Africa

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Modeling of the Photovoltaic Module Operating Temperature for Various Weather Conditions in the Tropical Region

引用

Fluid Dynamics & Materials Processing 2022年第5期18卷 1275-1284页

作者： Mame Cheikh Diouf Mactar Faye Ababacar Thiam Alphousseyni ndiaye Vincent Sambou Efficiency and Energetic Systems Research Group Alioune Diop UniversityBambeySenegal Laboratoire Eau EnergieEnvironnement et Procédés Industriels(LE3PI)UniversitéCheikh Anta DiopBambeySenegal

The operating temperature is a critical factor affecting the performances of photovoltaic(PV)*** this work,relevant models are proposed for the prediction of this operating temperature using data(ambient temperature and solar irradiance)based on real measurements conducted in the tropical *** each weather condition(categorized according to irradiance and temperature levels),the temperatures of the PV modules obtained using the proposed approach is compared with the corresponding experimentally measured *** results show that the proposed models have a smaller Root Mean Squared Error than other models developed in the literature for all weather conditions,which confirms the reliability of the proposed framework.

关键词： Photovoltaic operating temperature PV module weather condition

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Laplace Transform, Non-Constant Coefficients Differential Equations and Applications to Riccati Equation

引用

Applied Mathematics 2020年第7期11卷 639-649页

作者： Malick ndiaye Mathematics and Computer Sciences Department at Marist College Poughkeepsie NY USA

In this paper, the Laplace Transform is used to find explicit solutions of a fam-ily of second order Differential Equations with non-constant coefficients. For some of these equations, it is possible to find the solutions using standard tech-niques of solving Ordinary Differential Equations. For others, it seems to be very difficult indeed impossible to find explicit solutions using traditional methods. The Laplace transform could be an alternative way. An application on solving a Riccati Equation is given. Recall that the Riccati Equation is a non-linear differential equation that arises in many topics of Quantum Me-chanics and Physics.

关键词： Ordinary Differential Equations Laplace Transform

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Matrix Riccati Equations in Optimal Control

引用

Applied Mathematics 2024年第3期15卷 199-213页

作者： Malick ndiaye School of Computer Sciences and Mathematics Marist College Poughkeepsie USA

In this paper, the matrix Riccati equation is considered. There is no general way for solving the matrix Riccati equation despite the many fields to which it applies. While scalar Riccati equation has been studied thoroughly, matrix Riccati equation of which scalar Riccati equations is a particular case, is much less investigated. This article proposes a change of variable that allows to find explicit solution of the Matrix Riccati equation. We then apply this solution to Optimal Control.

关键词： Optimal Control Matrix Riccati Equation Change of Variable

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Origin of Sexy Prime Numbers, Origin of Cousin Prime Numbers, Equations from Supposedly Prime Numbers, Origin of the Mersenne Number, Origin of the Fermat Number

引用

Advances in Pure Mathematics 2024年第5期14卷 321-332页

作者： Mady ndiaye Middle School Badara Mbaye Kaba Dakar Academy Inspection Ministry of National Education of Senegal Dakar Senegal

We have found through calculations that the differences between the closest supposed prime numbers other than 2 and 3 defined in the articles are: 2;4: and 6. For those whose difference is equal to 6, we showed their origin then we classified them into two categories according to their classes, we showed in which context two prime numbers which differ from 6 are called sexy and in what context they are said real sexy prime. For those whose difference is equal to 4, we showed their origin then we showed that two prime numbers which differ from 4, that is to say two cousin prime numbers, are successive. We made an observation on the supposed prime numbers then we established two pairs of equations from this observation and deduced the origin of the Mersenne number and that of the Fermat number.

关键词： Cousin Prime Numbers Sexy Prime Numbers Real Sexy Prime Numbers Equations from Supposed Prime Numbers Mersenne Number Fermat Number Supposed Prime Numbers Prime Numbers

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Riccati Equation, Differential Transform, Rational Solutions and Applications

引用

Applied Mathematics 2022年第9期13卷 774-792页

作者： Malick ndiaye Department of Mathematics and Computer Sciences Marist College Poughkeepsie NY USA

In this article, the Riccati Equation is considered. Various techniques of finding analytical solutions are explored. Those techniques consist mainly of making a change of variable or the use of Differential Transform. It is shown that the nonconstant rational functions whose numerator and denominator are of degree 1, cannot be solutions to the Riccati equation. Two applications of the Riccati equation are discussed. The first one deals with Quantum Mechanics and the second one deal with Physics.

关键词： Riccati Equation Differential Transform Rational Solutions

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：