This work deals with Government Cloud (G-Cloud) solutions which provide shared ICT services in the field of public authorities. These solutions are deployed mainly because they bring significant financial savings for government. The aim of this work is to analyse three selected G-Cloud solutions and based on this analysis propose a concept of the solution suitable for the Czech Republic. G-Cloud solutions used in Denmark, Great Britain and Slovakia were selected for this analysis. First, a set of unified criteria was established to allow an objective analysis. Through these criteria, analysed solutions were described in terms of concept, offered services, delivery process and service usage, scheduling the entire solution and its component parts, security, legislation, and providing information to interested parties. The main benefits of this work are the comparison of analysed solutions and the draft concept of the solution for the Czech Republic.

Nubo is a broker-less and decentralized edge cloud marketplace that provides APIexposure for integration between entities of the marketplace, i.e., service providers and customers of edge cloud. The core functionalities of this marketplace are implemented by using Hyperledger Fabric blockchain. Some of the marketplace features are Subscription to a service, Service registration, Service onboarding, and Application onboarding. Although it has many features, the Nubo marketplace does not provide performance assurance to the customers, which is one of the main reasons for the lack of trust between the service providers and customers. The SLA management can resolve this issue, and it builds a trusted environment in the marketplace. SLA management facilitates the generation of a formal contract between the service provider and the customer, in which the parties agree on the service’s anticipated performance level (measured in terms of QoS indicators). It also involves consequences in the form of a penalty when the expectations are not achieved during the contract period. One of the challenges in SLA management in the marketplace is to describe the SLA considering different edge cloud characteristics such as multi-parties, network services, etc. In this thesis, we studied the specific requirements for describing the edge cloud SLA and SLA intent, and then we proposed TOSCA models that can be used to describe SLA and SLA intent in the marketplace. In the end, we evaluated the proposed models with the help of an edge cloud use case. / <p>Due to the covid pandemic, I made my presentation online.</p>

This diploma thesis is focused on creating an optimized e-shop model for the company. The theoretical basis includes e-shop and e-marketplace characteristics and deals with legal aspects important for e-commerce. The practical part describes a determined company and analyses chosen competing e-shops. The model of optimized e-shop is created on the basis of theoretical knowledge and this analysis.

Private sector knowledge producers, more commonly known as think tanks or research institutes, are used as authoritative sources in Western media either as interview guests or their research quoted by journalists.  Most studies have focused on their ability to influence government policy, but very little has focused on their role in the public sphere, particularly their visibility in media.  This study will explore how often think representatives appear as authoritative sources or experts in broadcast media during the 2015, 2017 and 2019 UK General Elections.  This will be done through a quantitative content analysis and thematic analysis investigating whether such representatives are accorded preferential access and ascribed primary authority to define narratives.  Additionally, a theoretical model has been designed to detect whether a marketplace of ideas can be detected or whether television news is a site of Habermassian rational-critical public sphere.  Inspired by the work of Anstead and Chadwick, and taking this vital work further, this study investigates whether authority signalling, and primary definition is still a relevant theory by analysing broadcast news coverage across three general elections.

During the modern times, innovators and researchers developed a key technology known as Artificial Intelligence (AI) Marketplace which leverages the power of AI to efficiently utilize the data generated by millions of devices to create new and better services and software products. H2020 Bonseyes is one such project that provides us a collaborative cloud based model of the AI marketplace for the users who generally don’t have access to large data sets, algorithms etc by allowing them to collaborate which each other and exchange the software artifacts. Collaboration leads to issues related to authentication and authorization which are addressed by Public Key In- frastructure(PKI).The main component of the PKI is the Certificate Authority which acts a anchor of trust, whose architecture is designed to be centralized. Centralized architecture is prone to many attacks and also failures which makes it vulnerable and weak.The adverse effects of the CA based PKI can be avoided by implementing a distributed PKI.This thesis focuses on a hybrid methodology consisting of Qualitative and Quanti- tative analysis by performing a literature review for accumulating knowledge from the Ocean Protocol which is a decentralized AI marketplace.The thesis aims to design and implement the framework used in the ocean protocol and evaluate its performance.The thesis also aims to develop a reference framework to be compatible with the Bonseyes Project. Moreover, our research also provides the reader with the concepts and technologies used in other implementations of distributed PKI.

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Enabling trust between entities to collaborate, without the necessity of a third-partymediator is a challenging problem. This problem is highlighted when the collaborationinvolves a complicated process, spans multiple systems, and encompasses a largenumber of entities. This is the case in a decentralized service exposure marketplace.In this work, we design and implement a Proof-Of-Concept (PoC) suite of servicesto enable a blockchain to become the anchor of trust for a decentralized serviceexposure marketplace. We first formalize the necessary requirements to enable trustbetween a consortium of entities hosting the marketplace. We then follow with athreat model against the identified requirement, highlighting misbehaviour from thedifferent entities. Finally, we propose a model, Trust Engine, which facilitates thetrust management process and mitigates the identified threats. We showcase a proofof-concept of our model, utilizing a combination of smart contracts (hyperledgerfabric), blockchain, and service mesh technology (Istio). The Trust Engine successfullyidentifies the misbehaviour, documents it in the blockchain, and enforces policesto remediate the misbehaviour. Furthermore, we examined each component in oursuggested system to identify the performance bottleneck. Lastly, we discuss thelimitations of our suggested model with regards to other service mesh deploymentmodels as well as potential future work and improvements. / Det är ett utmanande problem att möjliggöra förtroende mellan enheter för attsamarbeta, utan nödvändighet av en tredjepartsförmedlare. Detta problem belysesnär samarbetet innebär en komplicerad process, spänner över flera system ochomfattar ett stort antal enheter. Detta är fallet i en decentraliserad marknadsplatsför exponering av tjänster. I detta arbete designar och implementerar vi en PoCkollektionav tjänster för att möjliggöra en blockchain till att bli en förankring fören decentraliserad marknadsplats för serviceexponering. Vi formaliserar först denödvändiga kraven för att möjliggöra förtroende mellan ett konsortium av enhetersom är värd för marknadplatsen. Vi följer sedan med en hotmodell mot detidentifierade kravet, och belyser feluppförande från de olika enheterna. Slutligenföreslår vi en modell, Trust Engine, som underlättar förtroendeshanteringsprocessenoch mildrar de identifierade hoten. Vi presenterar ett konceptvalidering av vårmodell med en kombination av smarta kontrakt (hyperledger fabric), blockchain ochservicenätsteknologi (Istio). Trust Engine identifierar feluppförandet, dokumenterardet i blockkedjan och verkställer riktlinjer för att fixa feluppförandet. Vidareundersökte vi varje komponent i vårt föreslagna system för att identifiera flaskhalsenför prestanda. Slutligen diskuterar vi begränsningarna i vår föreslagna modell medavseende på andra modeller för distribution av servicenät samt potentiellt framtidaarbete och förbättringar.

Digital marketplaces gained increased importance in the circular economy. Although their economic benefits are a popular subject in present literature, research is scarce on their environmental impact. Since economic motivations often collide with environmental motivations on digital marketplaces within the circular economy, rebound effects can occur. Therefore, it is crucial for companies to continuously evaluate the environmental value of their service. Consequently, this thesis aims at creating a framework to identify the environmental impact of digital marketplaces within the circular economy. Two important questions had to be answered in this research: How environmental impact assessment and user behavior can be combined to identify factors that influence the environmental impact of such digital marketplaces and how these factors can be incorporated into a framework. Based on a review of relevant literature on circular economy, environmental impact assessment and user behavior, a single case study was conducted on the digital marketplace of the urban logistics startup Tiptapp. Qualitative data was gathered by interviewing users. Respondents were divided into two groups depending on their role on the platform: ‘helpers’ (supply) and ‘advertisers’ (demand). The results indicated that mainly three factors influence the environmental impact: user behavior, user flow and direct interactions, and external factors. By designing the framework to outline the influencing factors and their relationship, an initial foundation has been built for digital marketplaces and their providers to evaluate the environmental impact of their services and to actively counteract concealed rebound effects. Future research is needed to facilitate generalizability of the proposed framework as well as data integration and accurate impact calculations. / Digitala marknadsplatser har ökat i betydelse för den cirkulär ekonomin. Även om deras ekonomiska fördelar är ett populärt ämne i nuvarande litteratur är forskning om deras miljöpåverkan knapp. Eftersom ekonomiska motiv ofta kolliderar med miljömässiga motiv på digitala marknadsplatser inom den cirkulära ekonomin kan rebound-effekter uppstå. Därför är det avgörande för företag att kontinuerligt utvärdera miljövärdet av deras tjänster. Följaktligen syftar den här studien till att skapa ett ramverk för att identifiera miljöpåverkan av digitala marknadsplatser inom cirkulär ekonomi. Två viktiga frågor måste besvaras i denna forskning: Hur miljökonsekvensbedömning och användarbeteende kan kombineras för att identifiera faktorer som påverkar miljöpåverkan av sådana digitala marknadsplatser och hur dessa faktorer kan integreras i ett ramverk. Baserat på relevant litteratur om cirkulär ekonomi, miljökonsekvensbedömning och användarbeteende har en fallstudie genomförts på den digitala marknadsplatsen Tiptapp, som är ett urbant logistik-startup. Kvalitativa data samlades in genom att intervjua användare. De svarande delades in i två grupper beroende på deras roll på plattformen: "helpers" (utbud) och "advertisers" (efterfrågan). Resultaten indikerade att främst tre faktorer har påverkan på miljön: användarbeteende, användarflöde och direkta interaktioner samt externa effekter. Genom att utforma ett ramverk för att beskriva de påverkande faktorerna och deras förhållande har en första grund byggts. Detta för att digitala marknadsplatser och deras leverantörer ska kunna utvärdera miljöpåverkan av deras tjänster och aktivt motverka dolda rebound-effekter. Framtida forskning behövs för att underlätta generaliserbarhet av det föreslagna ramverket samt dataintegration och exakta konsekvensberäkningar.

[pt] Esta dissertação tem como objetivo analisar as estratégias de marketing implementadas pela Oi, a terceira entrante no mercado brasileiro de telefonia móvel, desde o seu pré-lançamento comercial até junho de 2004 para identificar os aspectos que tiveram influência nos resultados alcançados na penetração do mercado da telefonia móvel. Apesar da forte retração da atividade econômica observada no Brasil nos últimos anos, particularmente de 2002 a meados de 2004, a planta de telefonia móvel registrou significativa expansão, superando à da telefonia fixa (em 2003) e chegando a 59,7 milhões de linhas em outubro de 2004. O desempenho operacional da Oi nos 12 primeiros meses de atuação tornou-se um caso de sucesso, reconhecido por analistas americanos e europeus, tendo conseguido em apenas 24 meses de operações cerca de 21% do market share na sua região de atuação. Baseados no tratamento dos dados e informações coletadas através das entrevistas realizadas com os dirigentes, e da investigação documental dos relatórios da própria empresa e da Telemar, sua controladora, e de pesquisas externas, em publicações, estudos, relatórios e web sites; verificou-se que grande parte desse sucesso deveu-se principalmente às estratégias de marca, de inovação, do processo de distribuição, e a figura do pré-pago. / [en] The purpose of this dissertation is to analyze the marketing strategies implemented by Oi, the first third new commer in the Brazilian wireless marketplace, as of the business pre-launch up to July, 2004, to identify which enabled the Company to achieve that performance. Despite the strong retraction of the economic activity in Brazil for the latest years, mainly from 2002 up to mid 2004, the wireless telecommunications plant recorded a significant expansion, outdoing the wireline telecommunications (2003) and attaining 59.7 million of telephone lines in October, 2004. The performance of Oi in the first 12 months of operations became a success, acknowledged by American and European analysts, considering that in one year of operations the Company obtained approximately 21% of the market share in its segment of operations. Based on the processing of the data and of the information gathered by means of interviews carried out with directors, on the document research into the reports of the Company and of the Parent Company, Telemar, as well as based on the external researches into publications, studies, reports and websites; we noted that most of the success of the Company results mainly from the marketing strategies, from the innovations in the distribution process and from the use of the pre-paid mobile phone to develop price strategies.

從網際網路的興起，導至許多的相關發展應運而生，一種新型態的數位經濟儼然形成，繼而起之的就是當紅的EC與EB的快速發展。目前許多企業組織紛紛走向走一潮流，在此一時代的大環境之下，企業們紛紛朝向策略性的組織聯盟來發展，他們意識到，唯有以合作性的策略聯盟才能更掌握競爭優勢。而電子化的交易市集，正是它們眼中最佳的追求目標，因為它能夠幫助企業們達成上述一連串相關的理念與願景。 　縱使電子交易市集(e-marketplace)的前景一片看好，但目前大部分採行電子商務應用的公司，多著重在電子交易／採購部分，未能重視流程處理，並且仍然處於競爭仍然大於合作的狀態，再者，供應鏈管理上相關活動如訂單、存貨管理等等亦未能融入其中；因此，為能夠使企業有效連結產銷體系，完整建立起全球運籌管理模式，並精確掌握市場需求變化、迅速無誤地撮合買賣及完成交易，故就目前電子商務及產業電子化發展的情況來說，融入了供應鏈管理機制的電子交易市集應該就是一有效可行的解決方案。 　目前供應鏈管理之最新發展的模式為CPFR（Collaborative, Planning, Forecasting and Replenishment）模式；此為一流程處理模式，主要強調供應鏈上協同合作流程(collaborative processes)的概念，以促進供應鏈上流程的處理效率，同時藉由成員之間的訊息分享(information sharing) 及整合性企業流程(co-managed)來獲得供應鏈管理之最佳績效。 　因此，若能夠在B2B(Business To Business)電子交易市集平台機制中，將CPFR的流程及服務整合入市集平台中，則將會使得企業在這一波產業電子化的浪潮中，更能夠掌握住競爭優勢，故本研究首先根據文獻整理，建立起具有整合效益之電子交易市集之平台架構；進而以協同合作此一運作機制，將CPFR 處理流程之解決方案整合至此交易平台內，以建構出一具有CPFR協同合作的交易平台模式，來描述整個產業電子化在整合供應鏈及交易市集策略運作方式與流程；最後，再針對建構模式中，進行模式各個構面及服務的定義，讓企業清楚的了解合作流程的真正效益及優勢。