As popularity of online video grows, a number of models of advertising are emerging. It is typically the brokers usually the operators of websites who maintain the balance between content and advertising. Existing approaches focus primarily on personalizing advertisements for viewer segments, with minimal decision-making capacity for individual viewers. We take a resource ownership view on this problem. We view consumers attention space, which can be abstracted as a display screen for an engaged viewer, as precious resource owned by the viewer. Viewers pay for the content they wish to view in dollars, as well as in terms of their attention. Specifically, advertisers may make partial payment for a viewers content, in return for receiving the viewers attention to their advertising. Our approach, named FlexAdSense, is based on CyberOrgs model, which encapsulates distributed owned resources for multi-agent computations.<p> We build a market of viewers attention space in which advertisers can trade, just as viewers can trade in a market of content. We have developed key mechanisms to give viewers flexible control over the display of advertisements in real time. Specific policies needed for automated negotiations can be plugged-in. This approach relaxes the exclusivity of the relationship between advertisers and brokers, and empowers viewers, enhancing their viewing experience.<p> This thesis presents the rationale, design, implementation, and evaluation of FlexAdSense. Feature comparison with existing advertising mechanisms shows how FlexAdSense enables viewers to control with fine-grained flexibility. Experimental results demonstrate the scalability of the approach, as the number of viewers increases. A preliminary analysis of user overhead illustrates minimal attention overhead for viewers as they customize their policies.

The Saskatchewan farm sector is a dynamic system that is faced with the reality of farm consolidation and other structural adjustments. While structural adjustment may result in increased productivity at the farm-level, the declining farm population has a direct impact on rural regions. Given the economic difficulties now inherent in many rural regions, there has never been a more important time to improve our understanding of the structural dynamics of the farm sector. <p> By utilizing agent-based methods, competition that exists between farm households in land markets is modelled in a dynamic framework. By modeling land markets in this manner, structural adjustments that occur due to the re-allocation of land among farm household becomes endogenous to the model. The farming simulation was validated by evaluating its ability to replicate actual structural shifts that occurred during the period of 1960-2000. The results obtained from the simulation were found to mirror historic shifts, which gives the author confidence that the parsimonious assumptions made are robust, yet still characteristic of farm level behaviour in the region. Other scenarios were simulated in order to estimate a counterfactual structural evolution of the modelled region, in the absence of government stabilization and support programs. Significant deviations are observed between the base and zero transfer scenarios with regards to the consolidation of farm assets among a declining number of farm households. Most significantly, the decline in farm numbers accelerated significantly in the late 1980s in the zero transfer scenario compared to the base simulations. <p>The application of an agent-based framework allowed for the study of regional structure with an emphasis on the behaviour and actions of the primary decisions makers within the system. While structural change is driven by a number of factors, the ability of a farm household to fully employ their labour resource was an important factor in the simulations. This contrasts with the finding that productive efficiency, and purchasing and market power at the farm level is not a necessary condition for the observed consolidation of farm assets.

Denna uppsats undersöker vad som definierar och karaktäriserar en företagsledare utifrån Agentteorin och Stewardship-teorin. Uppsatsen tar sin ansats i de båda teoriernas definitioner gällande agenten/stewarden för att försöka vidareutveckla resonemanget bakom denna definition och inkluderar därför Intressentmodellen och ansvarslitteratur. Uppsatsens syfte är att studera teoriernas dikotomi gällande agenten/stewardens karaktär genom en empirisk studie av sju olika företagsledare och därigenom testa vår uppställda hypotes om vad som karaktäriserar en företagsledare. Studiens resultat går i linje med hypotesen och vittnar om att en företagsledares karaktär främst definieras av tydliga ansvarskänslor mot företaget genom en avvägning mellan de intressen som återfinns internt och externt organisationen. Studien vittnar även om att beroendeförhållanden mellan parter är av stor betydelse vid de intresseavvägningar som företagsledare gör.

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The epidemiology of malaria considers a complex set of local interactions amongst host, vector, and environment. A history of reemergence, epidemic transition, and ensuing endemic transmission in Iquitos, Peru reveals an interesting case used to model and explore such interactions. In this region of the Peruvian Amazon, climate change, development initiatives and landscape fragmentation are amongst a unique set of local spatial variables underlying the endemicity of malaria. Traditional population-based approaches lack the ability to resolve the spatial influences of these variables. Presented is a framework for spatially explicit, agent-based modeling of malaria transmission dynamics in Iquitos and surrounding areas. The use of an agent-based model presents a new opportunity to spatially define causal factors and influences of transmission between mosquito vectors and human hosts. In addition to spatial considerations, the ability to model individual decisions of humans can define socio-economic and human-environment interactions related to malaria transmission. Three interacting sub-models representing human decisions, vector dynamics, and environmental factors comprise the model. Feedbacks between the interacting sub-models define individual decisions and ultimately the flexibility that will allow the model to function in a diagnostic capacity. Sensitivity analysis and simulated interactions are used to discuss this diagnostic capability and to build understanding of the physical systems driving local transmission of malaria.

Detta examensarbete behandlar agenter och logiken som används för att styra dessa. ESR (Experimenterande Svenska Radioamatörer) är en geografiskt spridd organisation och fysiska möten mellan medlemmarna försvåras på grund av detta. Swap Meet, som är en del av Radioträff Syd, arrangeras årligen på olika platser runt om i Sverige. Medlemmar från andra platser i landet finner det då svårt att ta sig till dessa träffar. Dessutom vill många medlemmar köpa och sälja komponenter under hela året vilket inte är möjligt i dagsläget. På något sätt vill medlemmarna ha möjlighet köpa och sälja sina komponenter och dessutom förhandla om pris och kvantitet. Kan man utveckla en agent för att utföra detta på distans? Hur skall handelslogiken till en sådan agent struktureras? Syftet med denna rapport är att utveckla en lämplig handelslogik för en agent som förhandlar med andra agenter angående köp och försäljning av utrustning.

Mutual funds attracted great attention of both shareholders and academics in last few decades. Mutual funds provide benefits like diversification, professional managements and reduced costs for individual shareholders. Shareholders invest their assets into mutual funds managed by professionals. Managers may have an incentive to use those assets to satisfy their own interests. They can achieve this by charging excessive fees or spending more on the perquisites. These unmatched interests of shareholders and managers create so called principal-agent conflicts. Some researchers argue that market competition in mutual funds industry is strong enough to align interests of both shareholders and managers, thus mitigating principal-agent conflicts. Others believe there is need for internal governance to monitor managers‟ behaviors. Board of directors as an internal governance mechanism is responsible for aligning shareholders and managers interests.We collected data on board characteristics to find if they are related to funds attributes. Our sample of funds consists of 68 fund management companies with total of 603 mutual funds managed by those companies. Board characteristics include board size, age and gender of board members, and presence of CEO on the board. Fund attributes are total expense ratio, rate of return and management fees used as a measure of board effectiveness. We analyzed relationship of board characteristics and fund attributes separately on the company level and fund level.On the company level we found no relationship between board size and board age with expense ratio and rate of returns. We found significant positive relationship between board gender and presence of CEO with expense ratio. These results indicate that with the increase of male members on the board and the presence of CEO on the board there is an increase in total expense ratio. On the fund level analysis we found different relations with various types of funds. This may indicate that depending on the type of the fund the structure of the board that is effective changes.

Syftet med uppsatsen är att undersöka vilka faktorer som ligger bakom valet att outsourca kontra inte outsourca och varför inte fler företag väljer att outsourca med tanke på de fördelar som finns. Utifrån teori och tidigare forskning har fyra forskningsfrågor tagits fram som sedan testas under kapitlet resultat. I denna uppsats har kvalitativ metod använts. Sekundärdata har hämtats från lit-teratur i form av böcker och artiklar. Inspiration har även hämtats ifrån tidigare uppsatser, tidningsartiklar och olika internetsidor. Primärdata har insamlats med hjälp av semi-strukturerade intervjuer som sedan redovisas under kapitlet resultat. Primärdata har ställts mot sekundärdata för att analysera vilka likheter respektive skillnader som finns. Stäm-mer forskningsfrågorna, hämtade från teori och tidigare forskning, med svaren från intervjuerna? Genom intervjuerna har det uppmärksammats att intervjuobjekten haft både positiva och negativa erfarenheter av outsourcing. Dock framkom det att de ne-gativa erfarenheterna ofta överväger de positiva och att de som tidigare outsourcat valt att inte göra det igen.

The epidemiology of malaria considers a complex set of local interactions amongst host, vector, and environment. A history of reemergence, epidemic transition, and ensuing endemic transmission in Iquitos, Peru reveals an interesting case used to model and explore such interactions. In this region of the Peruvian Amazon, climate change, development initiatives and landscape fragmentation are amongst a unique set of local spatial variables underlying the endemicity of malaria. Traditional population-based approaches lack the ability to resolve the spatial influences of these variables. Presented is a framework for spatially explicit, agent-based modeling of malaria transmission dynamics in Iquitos and surrounding areas. The use of an agent-based model presents a new opportunity to spatially define causal factors and influences of transmission between mosquito vectors and human hosts. In addition to spatial considerations, the ability to model individual decisions of humans can define socio-economic and human-environment interactions related to malaria transmission. Three interacting sub-models representing human decisions, vector dynamics, and environmental factors comprise the model. Feedbacks between the interacting sub-models define individual decisions and ultimately the flexibility that will allow the model to function in a diagnostic capacity. Sensitivity analysis and simulated interactions are used to discuss this diagnostic capability and to build understanding of the physical systems driving local transmission of malaria.

The Saskatchewan farm sector is a dynamic system that is faced with the reality of farm consolidation and other structural adjustments. While structural adjustment may result in increased productivity at the farm-level, the declining farm population has a direct impact on rural regions. Given the economic difficulties now inherent in many rural regions, there has never been a more important time to improve our understanding of the structural dynamics of the farm sector. <p> By utilizing agent-based methods, competition that exists between farm households in land markets is modelled in a dynamic framework. By modeling land markets in this manner, structural adjustments that occur due to the re-allocation of land among farm household becomes endogenous to the model. The farming simulation was validated by evaluating its ability to replicate actual structural shifts that occurred during the period of 1960-2000. The results obtained from the simulation were found to mirror historic shifts, which gives the author confidence that the parsimonious assumptions made are robust, yet still characteristic of farm level behaviour in the region. Other scenarios were simulated in order to estimate a counterfactual structural evolution of the modelled region, in the absence of government stabilization and support programs. Significant deviations are observed between the base and zero transfer scenarios with regards to the consolidation of farm assets among a declining number of farm households. Most significantly, the decline in farm numbers accelerated significantly in the late 1980s in the zero transfer scenario compared to the base simulations. <p>The application of an agent-based framework allowed for the study of regional structure with an emphasis on the behaviour and actions of the primary decisions makers within the system. While structural change is driven by a number of factors, the ability of a farm household to fully employ their labour resource was an important factor in the simulations. This contrasts with the finding that productive efficiency, and purchasing and market power at the farm level is not a necessary condition for the observed consolidation of farm assets.