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Superconvergence of a Galerkin FEM for Higher-Order Elements in Convection-Diffusion Problems

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Numerical Mathematics(Theory,Methods and Applications) 2014年第3期7卷 356-373页

作者： Sebastian franz H.-G.Roos Institut für Numerische Mathematik Technische Universit¨at Dresden01062 DresdenGermany

In this paper we present a first supercloseness analysis for higher-order Galerkin FEM applied to a singularly perturbed convection-diffusion *** a solution decomposition and a special representation of our finite element space,we are able to prove a supercloseness property of p+1/4 in the energy norm where the polynomial order p≥3 is odd.

关键词： Singular perturbation layer-adapted meshes superconvergence postprocessing

Resilience in Agriculture: Communication and Energy Infrastructure Dependencies of German Farmers

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International Journal of Disaster Risk Science 2022年第2期13卷 214-229页

作者： franz Kuntke Sebastian Linsner Enno Steinbrink Jonas Franken Christian Reuter Science and Technology for Peace and Security(PEASEC) Technical University of Darmstadt64289 Darmstadt.HesseGermany

Agriculture is subject to high demands regarding resilience as it is an essential component of the food production chain. In the agricultural sector, there is an increasing usage of digital tools that rely on communication and energy infrastructures. Should disruption occur,such strengthened dependencies on other infrastructures increase the probability of ripple effects. Thus, there is a need to analyze the resilience of the agricultural sector with a specific focus on the effects of digitalization. This study works out resilience capacities of the interconnected technologies used in farm systems based on the experiences and opinions of farmers. Information was gathered through focus group interviews with farmers(N = 52) and a survey with participants from the agricultural sector(N =118). In particular, the focus is put on the digital tools and other information and communication technologies they use. Based on a definition of resilience capacities, we evaluate resilience regarding energy and communication demands in various types of farm systems. Especially important are the resilience aspects of modern systems’ digital communication as well as the poorly developed and nonresilient network infrastructure in rural areas that contrast with the claim for a resilient agriculture. The result is a low robustness capacity, as our analysis concludes with the risk of food production losses.

关键词： Digitalization of agriculture Germany Infrastructure failures Resilience capacities

The European Population 1850–1945 1

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Analysis of arch dam deformations

丛书名： Societies of Europe

2002年

作者： Rothenbacher franz.

ISBN: (数字)9781137433664

ISBN: (纸本)9780333777053;9781349656110

The European Population, 1850-1945 is the first volume of two on demographics. The second volume will appear as part of the Societies of Europe series in 2003 and will cover changes until the year 2000. The European Population, 1850-1945 is a comparative and historical data handbook and accompanying CD-ROM presenting series data on demographic developments, population and household structures for the countries of Western and Central Europe. All major fields of demographic change are covered: fertility, mortality, marriage, and divorce. Population figures are given for each population census by sex, civil status and age. Major demographic developments within the family are described providing a commentary on the main population structures and trends in Europe since the 19th century.

关键词： Sociological Methods History Education

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Frontiers of Structural and Civil Engineering 2010年第1期4卷 102-108页

作者： franz PERNER Pius OBERNHUBER Verbund-Austrian Hydro Power AG ViennaAustria

Predicting“regular”dam deformations for prevailing conditions and comparing them with observed deformations is an essential part of dam *** many cases prediction and comparison are carried out automatically and an alarm is triggered in the case of larger *** main contributors to the deformations of arch dams are water loading and the fluctuation of concrete *** general,the deformations exhibit an instantaneous elastic part,a time dependent reversible part and an irreversible *** of dam deformations can be based on deterministic models,purely statistical models or so-called hybrid models,which are a combination of the first *** models rely on static analyses,statistical models on the statistical analysis of previous deformation *** annual reservoirs,both water loading and temperature vary in cycles over a period of one year and it is extremely difficult to identify the various factors contributing to an observed *** is particularly true for time-dependent reversible displacements due to the water loading and the portion caused by temperature *** present article deals with the analysis of arch dam deformations based on hybrid *** attention is given to the analysis of the deformations due to temperature fluctuation and to the long-term *** proposed procedure is employed for the analysis of the deformations of the 186 m high Zillergruendl arch dam.

关键词： arch dam analysis Zillergruendl concrete temperature hybrid model

The Role of the European Pharmacopoeia(Ph Eur)in Quality Control of Traditional Chinese Herbal Medicine in European Member States

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World Journal of Traditional Chinese Medicine 2015年第1期1卷 5-15页

作者： Mei Wang Gerhard franz Sino-Dutch Centre for Preventive and Personalised Medicine/SU BioMedicine University of Regensburg Department of Pharmacy

In order to assure the safety and efficacy of the Chinese Medicines in Europe, the quality of TCM herbals should be guaranteed so that they can be freely imported in the European Union and other Western European Countries which are signatories of the European Pharmacopoeia Convention. Consequently, new Ph Eur TCM herbal drug Monographs should be elaborated, based on preexisting Monographs in the Chinese Pharmacopoeia(Ch P) *** a program has been inaugurated in 2005 by the Ph Eur Groups of Experts 13 A and B(Phytochemistry). Since then good progress has been made, elaborating of about one third of the originally proposed 100 TCM herbals being identified as important monographs for the European Market. Taking into account the many challenges still laying ahead, the establishment of a specialized Working Party(WP) on TCM with specialists and experts from many EU Member States has been decided by the Ph Eur Commission in 2008 which is highly active ever since in the examination and elaboration of new TCM herbal drug monographs, primarily to assure the safety of the European patient and further to provide quality parameters extremely important for all registration and licensing procedures of the respective National Authorities all over *** paper is a survey of results and difficulties obtained so far which has been encountered meanwhile in the elaboration process by the Ph Eur TCM WP of these monographs and will discuss these in detail. Moreover the role of Ph Eur TCM monographs in the European community is addressed.

关键词： European Pharmacopeia(Ph Eur) Chinese Pharmacopoeia(ChP) Traditional Chinese Medicine(TCM) TCM monographs herbal drugs and quality control

PROSPECTS AND NEW PROBLEMS OF SEDIMENT RESEARCH

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International Journal of Sediment Research 1997年第1期12卷 1-15页

作者： Wang, Zhaoyin Lin, Bingnan Nestmann, franz

Autonomous Vehicle Platoons In Urban Road Networks:A Joint Distributed Reinforcement Learning and Model Predictive Control Approach

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自动化学报（英文版） 2024年第1期

作者： Luigi D’Alfonso Francesco Giannini Giuseppe franzè Giuseppe Fedele Francesco Pupo Giancarlo Fortino

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基于多层膜的软X射线偏振测量(英文)

光学精密工程 2007年第12期15卷 1850-1861页

作者： franz Schaefers BESSY Berlin Germany

综述了过去10年中德国BESSY同步辐射装置在软X射线偏振测量方面所做的工作。在BESSY同步辐射装置中,有10条椭圆波动器光束线,这可使同步加速器辐射的偏振态从线偏振光(水平或者垂直)转变为左旋或右旋圆偏振光。由于很多偏振敏感实验(例... 详细信息

综述了过去10年中德国BESSY同步辐射装置在软X射线偏振测量方面所做的工作。在BESSY同步辐射装置中,有10条椭圆波动器光束线,这可使同步加速器辐射的偏振态从线偏振光(水平或者垂直)转变为左旋或右旋圆偏振光。由于很多偏振敏感实验(例如,MCD光谱测量)需要归一化量,因此对偏振度进行量化非常重要。对于偏振实验,即对光的偏振态测量来说,需要两个光学元件分别起相位片和检偏器作用。因此,专门研制了在软X射线区有透射和反射功能的多层膜,并对其做了优化。通过使多层膜参数(周期,厚度比)与构成材料的吸收边相匹配,即可获得共振加强的偏振灵敏度。由此可知,基于多层膜的偏振测量与这些偏振光学元件工作波长处性能测量密切相关,文中对仪器的设置和测试结果做了介绍,同时给出了磁性薄膜或光活化物质的磁光光谱测量和偏振测量的示例(法拉第和克尔效应)。

关键词：多层膜软X射线极紫外辐射同步磕射偏振测量检偏器相位片反射率磁光效应

Comparative studies on storage cells in tardigrades during starvation and anhydrobiosis

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Current Zoology 2010年第2期56卷 259-263页

作者： Andy REUNER Steffen HENGHERR franz Brümmer Ralph O.SCHILL Universitt Stuttgart Biological Institute Zoology UniversittStuttgart Biological Institute Zoology

The impact of starvation and anhydrobiosis on the number and size of the storage cells in the tardigrade species Milnesium tardigradum, Paramacrobiotus tonollii and Macrobiotus sapiens was investigated to gain more insight on the energetic side of anhydrobiosis. Storage cells are free floating cells within the body cavity of tardigrades and are presumed to store and release energy in form of glycogen, protein and fat to maintain a constant nutrient regime for the other tissues. The body size of the animals was not correlated with the size of the storage cells, however, M. tardigradum the largest species analysed also had the largest storage cells. A reduction in the size of the storage cells is apparent in all three species after seven days of starvation. A seven-day period of anhydrobiosis leads to a decrease in cell size in M. tardigradum but not in P. tonollii and M. sapiens. Although M. sapiens was raised on green algae, and M. tardigradum and P. tonollii were fed with rotifers and nematodes this difference in nourishment was not reflected in the response of the storage cells to anhydrobiosis

关键词： Tardigrada cryptobiosis Milnesium tardigradum Paramacrobiotus tonollii Macrobiotus sapiens