1,987 research outputs found
Film screening and discussion: Citizen Vaclav Havel Goes on Vacation
This is the archive of a film screening and discussion given by Jan Novak, author and filmmaker
Zoning Control of Abortion Clinics
This note will address some of the issues involved when communities propose to use the zoning power to limit the exercise of the constitutionally protected abortion decision, focusing on abortion clinic regulations in Cleveland, Ohio, and comparing them to ordinances in three other cities
Der Kapitalmarkt in der Tschechischen Republik
Series: Arbeitspapiere des Forschungsinstituts für mittel- und osteuropäisches Wirtschaftsrech
Development of Urban Electric Bus Drivetrain
The development of the drivetrain for a new series of urban electric buses is presented in the paper. The traction and design properties of several drive variants are compared. The efficiency of the drive was tested using simulation calculations of the vehicle rides based on data from real bus lines in Prague. The results of the design work and simulation calculations are presented in the paper
Evaluation of Effective Thermal Conductivities of Porous Textile Composites
An uncoupled multi-scale homogenization approach is used to estimate the
effective thermal conductivities of plain weave C/C composites with a high
degree of porosity. The geometrical complexity of the material system on
individual scales is taken into account through the construction of a suitable
representative volume element (RVE), a periodic unit cell, exploiting the
information provided by the image analysis of a real composite system on every
scale. Two different solution procedures are examined. The first one draws on
the classical first order homogenization technique assuming steady state
conditions and periodic distribution of the fluctuation part of the temperature
field. The second approach is concerned with the solution of a transient flow
problem. Although more complex, the latter approach allows for a detailed
simulation of heat transfer in the porous system. Effective thermal
conductivities of the laminate derived from both approaches through a
consistent homogenization on individual scales are then compared with those
obtained experimentally. A reasonably close agreement between individual
results then promotes the use of the proposed multi-scale computational
approach combined with the image analysis of real material systems.Comment: 17 pages, 7 figure
Design and development of an on-line book store
In an era where world wide web is very developed and also users are demanding, it is important to stand out in the crowd of websites. With the increase of use of mobile devices it is important that websites are responsive and adaptive to different sizes of displays. Graphic design and content must also convince the user to re-visit.
The thesis describes the current tools and techniques for quick prototyping, designing and developing fully responsive websites. The process is presented on a practical case of an online book store. The first part is the analysis of existing professional web services for online bookselling that have a large user base. In the following chapters the process of designing and developing a website is described. It is also written how to make a responsive website and how to make featured content
Estimation of Soil Physico-chemical Properties by On-the-go Measurement of Soil Electrical Conductivity
For modern crop management practices, like precision farming, is crucial information about detailed spatial distribution of soil properties. A study was conducted to evaluate the on-the-go measurement of soil electrical conductivity for mapping of agronomical relevant soil properties. The experimental work was carried out on the eight fields of Rostenice a.s. farm enterprise, located in the South Moravia region of Czech Republic. The measurement of apparent electrical conductivity of soil was done by using CMD-1 and CMD-6L instruments (GF Instruments, Czech Republic) in 2013 (117 ha) and 2016 (359 ha). Soil properties were obtained by soil sampling in irregular grid with the density of 1 sample per 3 ha. Soil samples were taken from the depth of 30 cm and analyzed for soil texture (percentage of clay, silt and sand particles), content of available nutrients (P, K, Mg, Ca) and soil organic matter (SOM) content.
The results of correlation analysis showed differences in main sensitivity of EMI to the soil properties across observed fields. Most frequent correlation was found in the percentage of clay particles smaller than 0.002 mm (r = 0.598). The correlation between EMI and nutrients content in soil and pH value was significant only for few fields. These results were obtained for individual fields, the aggregated evaluation showed lower relationships to EC. These outcomes showed, that rather than predictor of soil properties could be on-the-go measurement of soil EC used for identification of main zones within the fields at high spatial level
Estimation of Soil Physico-chemical Properties by On-the-go Measurement of Soil Electrical Conductivity
For modern crop management practices, like precision farming, is crucial information about detailed spatial distribution of soil properties. A study was conducted to evaluate the on-the-go measurement of soil electrical conductivity for mapping of agronomical relevant soil properties. The experimental work was carried out on the eight fields of Rostenice a.s. farm enterprise, located in the South Moravia region of Czech Republic. The measurement of apparent electrical conductivity of soil was done by using CMD-1 and CMD-6L instruments (GF Instruments, Czech Republic) in 2013 (117 ha) and 2016 (359 ha). Soil properties were obtained by soil sampling in irregular grid with the density of 1 sample per 3 ha. Soil samples were taken from the depth of 30 cm and analyzed for soil texture (percentage of clay, silt and sand particles), content of available nutrients (P, K, Mg, Ca) and soil organic matter (SOM) content.
The results of correlation analysis showed differences in main sensitivity of EMI to the soil properties across observed fields. Most frequent correlation was found in the percentage of clay particles smaller than 0.002 mm (r = 0.598). The correlation between EMI and nutrients content in soil and pH value was significant only for few fields. These results were obtained for individual fields, the aggregated evaluation showed lower relationships to EC. These outcomes showed, that rather than predictor of soil properties could be on-the-go measurement of soil EC used for identification of main zones within the fields at high spatial level
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