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Approximation of partially smooth functions

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Science China Mathematics 2008年第4期51卷 553-561页

作者： John Erik FORN/ess Erlend Fornaess WOLD Mathematics Department The University of Michigan Mathematisches Institut Universit■t Bern

In this paper we discuss approximation of partially smooth functions by smooth functions. This problem arises naturally in the study of laminated currents.

关键词： approximation currents test functions 57R30 32U40

The Physics of Rotational Flattening and the Point Core Model

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International Journal of Geosciences 2014年第6期5卷 555-570页

作者： Hanno essén Department of Mechanics Royal Institute of Technology (KTH) Stockholm Sweden

The effect of rotation on the shape (figure) and gravitational quadrupole of astronomical bodies is calculated by using an approximate point core model: A point mass at the center of an ellipsoidal homogeneous fluid. Maclaurin’s analytical result for homogenous bodies generalizes to this model and leads to very accurate analytical results connecting the three observables: oblateness (ò), gravitational quadrupole (J2), and angular velocity parameter (q). The analytical results are compared to observational data for the planets and a good agreement is found. Oscillations near equilibrium are studied within the model.

关键词： Rotation Angular Velocity Oblateness Flattening Figure of Celestial Body Gravitational Quadrupole Point Core Model Moment of Inertia

Assessment of Flood Risk in Cotonou Areas Surrounding NokouéLake Due to the Effect of Climate Change

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Journal of Geoscience and Environment Protection 2021年第3期9卷 262-279页

作者： Apollinaire essèminvo Chokpon Pierre Ozer Emmanuel Lawin Hydrology and Water Resources Management (Laboratory of Applied Hydrology) National Water Institute Calavi Benin The Hugo Observatory University of Liege Liège Belgique Départment of Sciences and Environment Management University of Liege Arlon Belgique

Cotonou, like West African cities, experiences recurrent flooding. This work aimed to study the effect of climate change on the risk of flooding in Cotonou’s zoos on the periphery Nokoué Lake. We analysed climate data (rainfall and temperature) in Cotonou over the period 1953 to 2013, the flow of the Ouémé River at Bonou, and the variation in the height (elevation) of Lake Nokoué. The results of the analysis of temperatures over the period 1953-2013 show an upward break from 1987 onwards (+0.7°C between 1987 and 2013), while for rainfall, no break was observed over the same period. None of the 13 rainfall indices calculated is statistically significant, but they show a relatively stable or declining trend except for the average daily rainfall, the maximum number of consecutive dry days and the 95th percentile, which all show a slightly upward trend. We have shown that the rainfall recorded in Cotonou does not reveal any abnormal or exceptional character over the last ten years, on the one hand, and the flooding of Ouémé River influences that of Nokoué Lake, on the other hand. This study shows that the floods observed in this area are more related to the effect of climate change.

关键词： Risk Flood Cotonou Climate Change Flooding

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竞逐汽车电子应用电容式触控传感器商机耀眼

电子与电脑 2006年第4期6卷 65-68页

作者： Dave Van ess Cypress Semiconductor

在汽车产业当个电子工程师是非常不简单的!汽车电子产业大多由机械工程师所主导，并着重于凸轮（cam）、压缩（compression）、马力（horsepower）等长期以来汽车产业所重视的技术层面。也因此电子工程师往往只是负责配线设计方面的工... 详细信息

在汽车产业当个电子工程师是非常不简单的!汽车电子产业大多由机械工程师所主导，并着重于凸轮（cam）、压缩（compression）、马力（horsepower）等长期以来汽车产业所重视的技术层面。也因此电子工程师往往只是负责配线设计方面的工作。但有一点相当重要，就是多数人对于汽车产业各项设计与装配的要求会比其它产业来得高。举一个例子来说，我邻居的计算机键盘用了两年就不能用了，因此上周末我陪他一起到计算机商场买键盘。上车后，他就开始愤怒地抱怨他那台已经开了12年的车子的收音机某个按钮故障了!从这例子就可以轻易发现我的邻居跟大部分的人一样，对于汽车元件总是会有比较高的要求。

关键词：汽车产业电子应用传感器电容式机械工程师计算机键盘商机汽车电子产业配线设计汽车元件

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滤波器概述：电子表格有助于提高直觉认识

电子设计技术 EDN CHINA 2006年第1期13卷 84-84,86,88-89页

作者： Dave Van ess Cypress MicroSystems 公司

使用在线电子表格，设计人员可从一个通用滤波器传递函数推导出最常见的滤波器类型。

关键词：滤波器电子表格传递函数设计人员信号频率

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电容式感测技术在饮水机设计中的应用

电子与电脑 2008年第4期8卷 77-80页

作者： Dave Van ess 赛普拉斯半导体公司

电容式感测技术为研发业者提供一个与使用者互动的全新方式,这种方法解决许多传统问题,包括机械式按压杆或使用电磁阀控制值的按钮开关。在饮水机内部设计中采用电容式感测技术，不仅展现出电容式感测技术所带来的强大可靠性，并显示出... 详细信息

电容式感测技术为研发业者提供一个与使用者互动的全新方式,这种方法解决许多传统问题,包括机械式按压杆或使用电磁阀控制值的按钮开关。在饮水机内部设计中采用电容式感测技术，不仅展现出电容式感测技术所带来的强大可靠性，并显示出由控制器所操控的电容式感测技术还可支持传统功能，为顾客提供更多的价值，并降低平时维修的费用。

关键词：感测技术内部设计电容式饮水机应用按钮开关使用者控制值

Prevalence of Schistosoma mono- and co-infections with multiple common parasites and associated risk factors and morbidity profile among adults in the Taabo health and demographic surveillance system, South-Central Côte d’Ivoire

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Infectious Diseases of Poverty 2022年第1期11卷 84-85页

作者： Fidèle K.Bassa Ikenna C.Eze Rufin K.Assaré Clémence essé Siaka Koné Félix Acka Véronique Laubhouet-Koffi Dinard Kouassi Bassirou Bonfoh Jürg Utzinger Eliézer K.N’Goran Unitéde Formation et de Recherche Biosciences UniversitéFélix Houphouët-Boigny22P.O.Box 582Abidjan 22Côte d’Ivoire 不详

Background Schistosomiasis remains an important public health problem,also among adults,and infected individuals not treated serve as a reservoir for continued *** this fact,evidence on the epidemiology of schistosomiasis in adults in Côte d’Ivoire is *** study aimed to determine the prevalence and risk factors of Schistosoma infection and co-infection with other helminth species and Plasmodium among adults in the Taabo region in the south-central part of Côte d’*** A cross-sectional survey was carried out in April and May 2017 in the frame of the“Côte d’Ivoire Dual Burden of Disease Study”(CoDuBu).A total of 901 randomly selected individuals,aged 18–90 years,provided blood,stool and urine samples for the diagnosis of malaria and helminth *** samples were subjected to the Kato-Katz technique for detection of Schistosoma mansoni and soil-transmitted helminth eggs,while urine samples were examined for eggs of Schistosoma haematobium and circulating cathodic antigen of *** factors and morbidity profiles were assessed using health examination and *** logistic regressions were employed to identify risk factors and morbidity patterns associated with *** mono-and *** The prevalence of *** and *** was 23.2%and 1.0%,*** *** were mono-infections(81.3%).Independent determinants of *** infection were young age,low socioeconomic status(mono-and co-infection)and poor hygiene practices(co-infection)(P<0.05).*** infection was independently associated with higher pain and symptom scores(mono-infection),poor self-rated health and low healthcare use(co-infection)(P<0.05).Conclusions This study showed that adults represent a substantial reservoir of *** sustain schistosomiasis control and improve people’s wellbeing,it is important to expand preventive chemotherapy from school-aged children to adults,coupled with hygiene and

关键词： Adults Côte d’Ivoire Morbidity patterns Prevalence Risk factor Schistosoma infection