Debris disk morphology is wavelength dependent due to the wide range of particle sizes and size-dependent dynamics influenced by various forces. Resolved images of nearby debris disks reveal complex disk structures that are difficult to distinguish from their spectral energy distributions. Therefore, multi-wavelength resolved images of nearby debris systems provide an essential foundation to understand the intricate interplay between collisional, gravitational, and radiative forces that govern debris disk structures. We present the Stratospheric Observatory for Infrared Astronomy (SOFIA) 35 mu m resolved disk image of is an element of Eri, the closest debris disk around a star similar to the early Sun. Combining with the Spitzer resolved image at 24 mu m and 15-38 mu m excess spectrum, we examine two proposed origins of the inner debris in is an element of Eri: (1) in situ planetesimal belt(s) and (2) dragged-in grains from the cold outer belt. We find that the presence of in situ dust-producing planetesmial belt(s) is the most likely source of the excess emission in the inner 25 au region. Although a small amount of dragged-in grains from the cold belt could contribute to the excess emission in the inner region, the resolution of the SOFIA data is high enough to rule out the possibility that the entire inner warm excess results from dragged-in grains, but not enough to distinguish one broad inner disk from two narrow belts.

A review of the research related to Information Technology (IT) governance reveals that researchers have yet to use systems theory directly as a basis for understanding IT governance; however, analysis of these researchers’ various definitions of IT governance shows a concurrence between these definitions and the characteristics of a system. This case study research adopts a systems imagination to observe IS and IT governance in the Virginia Department of Transportation (VDOT), which has a budget of over $5 billion and over 7,500 employees and has recently conducted a strategic assessment of its IT organization - including IS and IT governance. The case study posits that VDOT is an indivisible, purposeful, goal seeking (teleological) system where (1) there are three peer elements (governance, management, and operations); (2) there is a governance feedback mechanism (auditing and monitoring); (3) there are peer areas within the governance element that are specialized for a VDOT asset (e.g., capital asset governance, financial governance, human resource governance, etc.) and IS governance is the peer area that is specialized for IT assets; and (4) there are sub-peer areas within IS governance that are specialized for an IT, and this specialized form of IS governance is named IT governance.

The main goal of the thesis is to explore selected economical hypotheses through theoretical conception applying macroeconomics data from the Czech Republic. This thesis includes the following hypotheses: budget deficits solved by increasing taxes, compromise between unemployment and inflation, low impact of budget deficits. To verify these hypotheses, there is a comparison with economic theories such as Laffer curve, which has showed that Laffer peak is at the level of 22 % taxation. Other used theory is the Phillips curve where correlation between inflation and unemployment rate is stronger based on yearly data than on monthly data. Theoretical model IS-LM has confirmed that multiplication effect could have caused the positive economic growth in 2010 and 2011. Even if economical hypothesizes are partially correct, they are not recommended for the government to determine their decisions. There are more efficient long-term solutions that can be used to solve challenges of the recent economic situation.

V první části práce jsou analyzány nástroje pro měření efektivnosti firmy a nástroje pro měření efektivnosti firemního IS/ICT. U obou skupin je hodnocena jejich vhodnost pro měření efektivnosti. Dále jsou analyzovány faktory podmiňující efektivnost IS/ICT ? tj. řízení firemního IS/ICT a řízení a hodnocení IS/ICT investic. V další části jsou popsána specifika bankovního odvětví a současné trendy ovlivňující efektivnost bankovních procesů. V závěru práce jsou navrženy dvě metody měření vazby mezi efektivností IS/ICT a efektivností firmy jako celku. První z nich se opírá o statické hodnocení zralosti IT procesů a plnění firemních cílů. Druhá metoda vychází ze systémové dynamiky a dynamických modelů.

The Diploma Thesis is dealing with questions of investment decision-making in the area of IT and can be a complete guidance on the basic concepts of decision-making on the investment projects, methods of financial evaluation of such projects and the ways of its application in the sphere of IT. It is mainly aimed on the projects dealing with internal processes in IT organizations and optimalization of its management ? IT Service Management (ITSM). The paper deals with existing methodologies and standards applicable to IT Service Management and closely works with the latest library of best practices ITIL V3. The introduction gets the reader into the basics of the IT management, introduces the existent market standards and creates a liaison between the IT and business in questions of investments. The second part pays attention to the principles of ITSM and describes the benefits that can process optimalization bring to the company. The third chapter opens up the IT investment topic and introduces various methodological concepts and models used not only in the classical financial theory, but in the modern management practice as well. It offers a basic overview on the methods of investment project evaluation, e.g. Net Present Value (NPV), The Payback Period Method, The Internal Rate of Return (IRR), The Profitability Index, and the most popular one ? Return on Investment (ROI). The following chapter applies the measure of Return on Investment (ROI) to the projects of ITSM implementation according to ITIL. It shows the basic principles of the method usage, describes its main components and introduces the way of identification and evaluation of the benefits, which those projects bring to the business. Gained knowledge is based on the real practical examples ? several worked-out business cases created for the customers of the Hewlett-Packard Company. The last part of this chapter shortly describes several software tools for building the similar business cases and their own methodology. The last chapter in devoted to the situation on the local and world market and addresses the practical application of the methods of IT projects evaluation in the companies. The conclusion then summarizes important parts and key elements of the paper.

The work summary problems of information systems audit and use these findigs while performing information system audit in a real company. Audit is performed using COBIT methodology and it respects not only requirements set by methodology but even special requirements set by organization. The work is also checking usability of COBIT methodology while performing audit in the conditions of medium size czech company.

Main goal of this document is to make reader aware of economical aspects of the information system design with regards to various types of organizations. It focuses on different approaches of organizations to the information system depending on expected function of IT within their business objectives. IS SAP and IS Helios SW products were used in order to present benchmark of economical figures of different information systems.

The Basel II Framework ensures banks are well capitalized. It is designed to be more risk sensitive than the old Basel Capital Accord and considers operational risk, such as "the risk of loss resulting from inadequate or failed internal procesess, people and systems or from external events." Banks are forced to calculate the regulatory capital charge for operational risk and want to optimize it. IT is a substantial part of operational risk and therefore is a part of the regulatory capital charge for operational risk. The Basel Committee requires banks to implement a framework to manage operational risk. One objective of this study is to provide description of this framework, IT aspects of operational risk and IT governance under Basel II, based on available sources of information. Another objective is to design processes for assessing and managing IT and operational risks under Basel II. Last but not least objective of this study is to disclose recent credit risk data and indicators for consolidated sector and large banks in the Czech republic. The amount of the regulatory capital charge for operational risk is an important part of the overall capital charge. This work increases IT practitioner's understanding of such topics as assessing and managing operational risk under Basel II.

Outsourcing is global phenomenon. All companies, as well as banks, detach their lateral activities. The question is if outsourcing is possible also in foreign payment department and which kind of outsourcing select here? Is for bank better to outsource only technical components, partial or total processing of cross border payment? Practical example should gives an answer.

The theme of this thesis is how to implement an existing software development methodology in small company. The main aim of the thesis is to choose and adapt one of existing methodology and implement it in the real enterprise environment, therefore the first step is analyze existing (current) state in this environment and consequently propose the best way of implementing and establishing the chosen methodology. The first chapter of the thesis deals with theoretical background devoted to history of software development methodologies and explains the meaning of software development and describes its goals and parts. Existing trends in the area of software development methodologies are also described in this chapter. The next part of the thesis is focused on most widely used methodologies and approaches in this area. Some of possible methodologies for small companies are described and presented with the view of making process of selection easier. Next logical step of this work is analyzing the current state of development process of client and choosing appropriate methodology for implementation. The last chapter deals with project of implementation that consists of several steps divided into three main phases. The aim of the first phase of the project is to propose solution to establishing new methodology. It is followed by the phase implementing this solution in real enterprise environment. The project of implementation concludes with verification of results through real pilot project.