The phenomenon of gas entrainment, as a result of impinging liquid jets, was experimentally investigated. The purpose of these investigations was to create a solid experimental database necessary for the development and validation of computational fluid dynamics (CFD) codes. In this work, various experimental setups were built to allow employing various imaging measurement techniques with high spatial and temporal resolution. High-speed imaging was applied for characterizing the flow structure that develops under the free surface. It was found that gas entrainment takes place as soon as the jet impact velocity overcomes the value of 1.2 m/s. The bubble plume, formed as a result of impingement, consists of two distinct regions: an inner region with high turbulence and fine freely dispersed bubbles and an outer region, where larger bubbles move towards the free surface. Two mechanisms are responsible for the occurrence of gas entrainment. High-speed camera observations were validated by means of ultrafast x-ray computed tomography, an innovative non-intrusive measurement technique. Also, quantitative information regarding the bubble plume was acquired from the high-speed observations, in terms of: penetration depth, width and spreading angle of the bubble plume. Measurements, based on two wire-mesh sensors, were performed to assess the gas entrainment rate. In these measurements, void fraction distributions and gas velocities were quantified. The entrainment rate was calculated as an integral over the entrained volumetric gas fraction. It was found to be a function of the jet velocity and length. Results were validated using dual-plane x-ray computed tomography. Results were in agreement with the ones obtained from the wire-mesh sensors and approximately four to six times smaller than predictions found in related publications. Instantaneous as well as time-averaged velocity fields of the continuous phase were gained by means of particle image velocimetry (PIV). Axial time-averaged velocities followed a power law profile, typical for fully developed flow conditions. Two recirculating vortices were found in the flow: one occurs as a result of the water adhering to the lateral wall of the tank and the flow being confined by the bottom wall, while the second one is generated in the wake of rising bubbles. Bubble entrainment was found to reduce liquid phase mean velocities and to enhance fluctuations in the streamwise direction. This is reflected in the distribution of the turbulence kinetic energy. Last but not least, several examples of comparisons between experimental data and CFD results stand to demonstrate the importance of the experimental observations gathered in the frame of this work. It is shown that the experimental data provides a good basis not only for qualitative comparisons, but also for quantitative correlations.

This research presents methods of creating digital maps for floodplain delineation and flood probability studies and storing them in a geodatabase. Methods for creating a geodatabase for water resources outside of a GIS are presented. The geodatabase follows the ArcHydro data model. Methods are also shown for creating digital flood maps and storing them in the geodatabase. These flood maps, defining the floodplain boundary and flood probability, are stored in a digital format ready for use in a FEMA flood hazard project, allowing for better archival methods and reproducibility.

Serving geospatial data collected from remote sensing methods (satellite images, areal photos, etc.) have become crutial in many geographic information system (GIS) applications such as disaster management, municipality applications, climatology, environmental observations, military applications, etc. Even in today&rsquo / s highly developed information systems, geospatial image data requies huge amount of physical storage spaces and such characteristics of geospatial image data make its usage limited in above mentioned applications. For this reason, web-based GIS applications can benefit from geospatial image streaming through web-based architectures. Progressive transmission of geospatial image and map data on web-based architectures is implemented with the developed image streaming methodology. The software developed allows user interaction in such a way that the users will visualize the images according to their level of detail. In this way geospatial data is served to the users in an efficient way. The main methods used to transmit geospatial images are serving tiled image pyramids and serving wavelet based compressed bitstreams. Generally, in GIS applications, tiled image pyramids that contain copies of raster datasets at different resolutions are used rather than differences between resolutions. Thus, redundant data is transmitted from GIS server with different resolutions of a region while using tiled image pyramids. Wavelet based methods decreases redundancy. On the other hand methods that use wavelet compressed bitsreams requires to transform the whole dataset before the transmission. A hybrid streaming methodology is developed to decrease the redundancy of tiled image pyramids integrated with wavelets which does not require transforming and encoding whole dataset. Tile parts&rsquo / coefficients produced with the methodlogy are encoded with JPEG 2000, which is an efficient technology to compress images at wavelet domain.

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The nature of work conducted during the course of study towards a MSc degree focused on tunable diode laser absorption spectroscopy (TDLAS). This field involves the in-situ detection of gas constituents from low concentration samples. Specifically, I will focus on TDLAS systems utilizing practical optics, readymade electronics, and commercially available near infrared vertical cavity surface emitting lasers (VCSEL). In attempting to lower the minimum detectable concentrations of constituent gases, quantifying contributory noise sources is vital. Consequently, I seek to characterize principle noise sources of a prototypical TDLAS system in order to gain understanding of the limits that inhibit detection of trace gas concentrations. The noise sources which were focused on can be categorized as follows: source laser noise, optical noise, and detection noise. Through this work it was my goal to provide the means of achieving superior sensitivities.

The main goal of this thesis is a solution proposal of MS Dynamics AX2012 for mobile device. Output is in form of an analysis. Base on it could be the solution implemented. Only selected warehouse processes are concerned with which brings the mobile device usage higher effectiveness. Partial goal is actual warehouse processes clarification on standard MS Dynamics AX2012 application. Their reality underscores business processes explanation in parallel. First step to reach the goals mentioned is available technologies and possibilities exploration. Warehouse and its processes are studied base on resources available and own experience from given branch. The same method is used for getting information about software, data collecting and hardware. Warehouse processes in MS Dynamics AX2012 description is based on Microsoft training materials and own professional experience. Analytical mobile application solution proposal is based on analysis of information studied within this thesis and own experience with suggesting similar modifications. Added value is model, how can be standard enterprise resource planning system customized for usage on mobile devices. Plus is also demonstration of warehouse processes on the most current version of chosen application in line with real business processes. Point is not only an IT solution with no relation to real usage. Contribution to completeness is comparing other SW types and HW selection. Rational structure of document leads the getting information to reach the goal. Theoretical part deals with general warehouse logistics and a possibility of related technologies usage. In the analytical part are ideas from theoretical part applied when processes on standard version of MS Dynamics AX2012 are described. Last and the most fundamental part, is dedicated for solution proposal of mobile version application.

This diploma thesis deals with the analysis, design, implementation and testing of an information system for a small farmer. The aim of this system is to administer customers, an income and outcome, orders, to manage notes, and possibility to track the occurrence pests of crops. The thesis describes options for the development of information systems, detailed specifications requirements and the design of system. Further is described the implementation, especially then the way to get information about pests and then testing the application. The information system is realized in the language C# as a desktop application using the framework .NET and the design pattern MVVM.

The work deals with recording and tracking of the objects in a certain area. It also puts mind to web services, mapping applications and modern standards, which seeks to compare and choose the best for this project. Then explore the existing systems and discusses their pros and cons, which specifies the requirements and propose solutions to information system built of selected technologies in order to create a friendly user interface. The proposed solution implements using modern PHP frameworks based on the MVP design pattern, and finally deals with verification of functionality and outline future developments.

This thesis describes the design and implementation of extensions for warehouse management system for HAN-VMK department of Hella Autotechnik Nova, s.r.o. The theoretical part defines the concepts and definitions used in this work. The practical part contains analysis of department HAN-VMK and its needs, implementation of designed specific solution and economic evaluation.

This diploma thesis is focused on designing and implementing a web solution to support the operation of a warehouse management system as requested by the system provider. The theoretical part of this paper analyzes the already existing approaches towards the problematic parts of web application development, such as the design of architecture and the method used to record the settings and permissions. The final portal is built using mainly Microsoft technologies. The thesis concludes with an evaluation of applicability of this solution from both technical and economical standpoints.