Millions of dollars change hands daily through online auction markets. Online trading communities like eBay and Amazon.com are emerging as increasingly important factors of the economy. Various Reputation systems are important components in such electronic markets. Existing evidence suggests that there are a number of problems with such systems. This paper presents an empirical exploration of reputation systems. Two studies of Tradera’s discussion forums are reported. The result of the first, pilot study suggests that both sellers and buyers are worried about getting a retaliatory negative feedback if they leave a negative feedback for an unsatisfactory transaction from their trading parties. Retaliation from the non-paying bidders seems to be the most severe threat and trouble for sellers. A set of negative feedbacks were then gathered from Tradera and data were manually analyzed in order to verify the results from the preliminary study. The results from the second study confirmed the result of the pilot study. A general evaluation of Tradera’s current reputation system is made based on the results of the second study. This paper aims to make a contribution to the literature on online reputation system by developing a typology of seller complaints about Tradera buyers and providing a tentative definition of retaliatory negative feedback based on the findings of both studies. Proposed solutions to the problems of non-payment and feedback retaliation are also presented.

The diploma thesis deals with Business Process Management and changes of business environment which have occurred mainly in last century and caused a formation of new approaches in company management. Further it defines a concept of process, process kinds and operation of process leaded organization including advantages and disadvantages. The thesis also includes Business Process Modelling problematic which has relations to Business Process Management. There are also identified techniques and specific diagrams possible and suitable to use in modelling area. This knowledge is applied in Draft of the Model of Auction Process of Buying Commodities.

The co-optimization of energy and reserves has become a standard requirement in integrated markets. This is due to the inverse relationship that exists between energy and reserves. The provision of reserves generally reduces the amount of primary energy a generating unit can produce and vice versa. This suggests that these products should be procured through a simultaneous auction to ensure optimal procurement and pricing. Furthermore, forward markets dictate that this co-optimization of energy and reserves be done over a multi-period planning horizon. This dissertation addresses the problem of optimal scheduling and pricing of energy and reserves over a multi-period planning horizon using an optimal power flow formulation. The extension of the problem from a static optimization problem to a dynamic optimization problem is presented. Price definitions for energy and reserves in terms of shadow prices emanating from the optimization algorithm are provided. It is shown that the proposed formulation of prices leads to the cascading of reserve prices and eliminates the problem of “price reversal” where lower quality reserves are priced higher than higher ii quality reserves. Pricing conditions are also established for the downward substitution of higher quality reserves for lower quality reserves. The proposed pricing formulations are tested on the IEEE 24 Bus Reliability Test System and on the South African power network. The simulated results show that cascading of reserve prices does occur and that prices of different types of reserves are equal when downward substitution of reserves occurs. Zonal reserve requirements result in higher energy and reserve prices, which in term result in higher procurement costs to the system operator and higher profits to market participants. Congestion on the network also results in higher procurement costs to the system operator and higher profits to market participants in the case of zonal pricing of reserves. / Dissertation (MEng)--University of Pretoria, 2013. / gm2014 / Electrical, Electronic and Computer Engineering / unrestricted

The priority of the thesis is to evaluate economic reason for the existence of executors in comparison with current institute of state bailiffs. The thesis further analyzes the powers of executors and their potential misuse in the execution process. Last but not least, the state regulations of this institute are described. The goal is to use general economic theory to find out the effective way of protecting creditor's rights.

Diploma thesis entitled Trading on Internet Auctions deals with the analysis and comparison of important international and Czech internet auctions. Under examination are not only important auctions in terms of number of users, but also those that surpass other interesting business solutions and innovative thinking. The diploma thesis is divided into three chapters. The first chapter, entitled Establishment and Development of e-commerce describes the most important events and milestones for the development of e-commerce and the subsequent emergence of online auctions. The second chapter is specifically devoted to the analysis and comparison of foreign auction sites. The third chapter focused attention on the Czech auction sites, including the legal aspects that are related to trading on internet auctions. The whole thesis ends by conclusion and evaluation of reaching the given object.

The goal of this thesis is to analyse trends of the contemporary Czech art on the domestic market and possibilities of the contemporary Czech artists to succeed on the international art market. The firts part of the thesis describes specific forms of contemporary art and their position on the art market. The main factors influencing contemporary art prices are mentioned. The next chapter is concentrated on trends of contemporary art in comparison with the other segments of the art market. The third chapter is focused on development of the contemporary art on the domestic market. It analyses the present situation on the Czech art market and explores the potential of the contemporary Czech art. The last part of the thesis evaluates a success rate of the contemporary Czech art on the global art market.

The purposes of the study were to: 1) identify the underlying dimensions of consumer shopping motivations and attitudes toward online auction behaviors; 2) examine the relationships between shopping motivations and online auction behaviors; and 3) examine the relationships between shopping attitudes and online auction behaviors. Students (N = 341) enrolled at the University of North Texas completed self-administered questionnaires measuring shopping motivations, attitudes, online auction behaviors, and demographic characteristics. Using multiple regression analyses to test the hypothesized relationships, shopping motivations and shopping attitudes were significantly related to online auction behaviors. Understanding the relationships is beneficial for companies that seek to retain customers and increase their sales through online auction.

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The purpose of this master´s thesis is to process the manual for realization of internet auction focused in the car market – MotorHit.cz. It includes market and competition analysis and also analysis of general and professional (business) surrounding. The entire proposal of project solving was made from the obtained data and realized analyses.

I am dealing with implementation of auction system for internet presentation of art gallery in my dissertation. Advertising agency CCD Media Ltd had given an order for solution. In all sphere of business is trend of implementing of auctions, especially electronic in present. Sale of art cannot avoid this trend. Wi will find out advantages of this solution in use.