published_or_final_version / Business Administration / Master / Master of Business Administration

A internet tem apresentado forte crescimento desde o final dos anos 1990. Na metade dos anos 2000, o fenômeno das mídias sociais inicia-se. No Brasil, o Orkut foi um dos desbravadores desde novo mercado, hoje dividido por empresas como Youtube, Facebook, Linkedin, Twitter e tantos outros. O internauta brasileiro adotou as mídias sociais e aparece na lista de maiores usuários desta mídias. Aconteceu isso com o Orkut, acontece isso com o Youtube, com o Facebook, com o Twitter, e o fenômeno merece ser acompanhado de perto pela academia. Pesquisando sobre o crescimento das mídias sociais, apareceu uma maneira de vender produtos, um misto de e-commerce e mídia social, chamado de social commerce. Nele, uma empresa oferece um produto para um usuário de mídia social, para que este presenteie um amigo ou conhecido nesta rede social, baseado nas declarações deste amigo ou conhecido. Seria este modelo viável no Brasil? Quais os elementos importantes para que esse tipo de comercio avance no Brasil? Este é o objeto de estudo desta tese de doutorado. / The internet hás been presenting a strong growth since the final of the 1990´s. In the middle of the years 2000, the social media fenomenon started in Brazil. Orkut is one of the first players in this market, but nowadays companies like Youtube, Facebook, Linkediin, Twitter among others divide the user´s attention. The Brazilian internet users adopted the social media and appear on the top of the all lists, being considered a have user os this kind of media. It was true with Orkut, and it is also happening with Youtube, Facebook and Twitter and it must be focused by researchers and intellectuals. While researching about the social media growth, it was found in articles a new way to sell products, a mix of e-commerce and social media, named social commerce. In this model, a e-commerce company offers a product to a social media user, so this person can give a present to a contact or friend, which is a contact in this same social media, all based on the profile of this contact or friend. Would be this model profitable in Brazil? Which elements are important to develop it in the country? This is the focus of this study.

A internet tem apresentado forte crescimento desde o final dos anos 1990. Na metade dos anos 2000, o fenômeno das mídias sociais inicia-se. No Brasil, o Orkut foi um dos desbravadores desde novo mercado, hoje dividido por empresas como Youtube, Facebook, Linkedin, Twitter e tantos outros. O internauta brasileiro adotou as mídias sociais e aparece na lista de maiores usuários desta mídias. Aconteceu isso com o Orkut, acontece isso com o Youtube, com o Facebook, com o Twitter, e o fenômeno merece ser acompanhado de perto pela academia. Pesquisando sobre o crescimento das mídias sociais, apareceu uma maneira de vender produtos, um misto de e-commerce e mídia social, chamado de social commerce. Nele, uma empresa oferece um produto para um usuário de mídia social, para que este presenteie um amigo ou conhecido nesta rede social, baseado nas declarações deste amigo ou conhecido. Seria este modelo viável no Brasil? Quais os elementos importantes para que esse tipo de comercio avance no Brasil? Este é o objeto de estudo desta tese de doutorado. / The internet hás been presenting a strong growth since the final of the 1990´s. In the middle of the years 2000, the social media fenomenon started in Brazil. Orkut is one of the first players in this market, but nowadays companies like Youtube, Facebook, Linkediin, Twitter among others divide the user´s attention. The Brazilian internet users adopted the social media and appear on the top of the all lists, being considered a have user os this kind of media. It was true with Orkut, and it is also happening with Youtube, Facebook and Twitter and it must be focused by researchers and intellectuals. While researching about the social media growth, it was found in articles a new way to sell products, a mix of e-commerce and social media, named social commerce. In this model, a e-commerce company offers a product to a social media user, so this person can give a present to a contact or friend, which is a contact in this same social media, all based on the profile of this contact or friend. Would be this model profitable in Brazil? Which elements are important to develop it in the country? This is the focus of this study.

As today, the traditional payment systems of cash, cheques and credit cards are being supplemented by electronic cheques, electronic credit card-based systems, and token-based systems, online security is of utmost importance and one of the biggest criteria used for evaluating electronic payment systems. Electronic payment systems must guarantee the essential security requirements: confidentiality, privacy, integrity, availability. authentication, non-repudiation as well as anonymity and trust. This paper compares the various payment systems (both traditional and electronic) available today mainly according to their security aspects. Secure processing can be accomplished including access controls and detection techniques, such as, encrypted communication channels, user and/or message authentication, symmetric and asymmetric encryption, digital certificates and firewalls. These effective security measures, which are outlined in detail in this paper, will protect the information and payment systems against security risks that currently threaten the Internet / Computing / M.Sc. (Information Systems)

As today, the traditional payment systems of cash, cheques and credit cards are being supplemented by electronic cheques, electronic credit card-based systems, and token-based systems, online security is of utmost importance and one of the biggest criteria used for evaluating electronic payment systems. Electronic payment systems must guarantee the essential security requirements: confidentiality, privacy, integrity, availability. authentication, non-repudiation as well as anonymity and trust. This paper compares the various payment systems (both traditional and electronic) available today mainly according to their security aspects. Secure processing can be accomplished including access controls and detection techniques, such as, encrypted communication channels, user and/or message authentication, symmetric and asymmetric encryption, digital certificates and firewalls. These effective security measures, which are outlined in detail in this paper, will protect the information and payment systems against security risks that currently threaten the Internet / Computing / M.Sc. (Information Systems)

“We provide a solution that allows saving 15 to 20 euros per invoice.It is very important in a strategy of service and cost reductions for our customers and for us.”<p><p>“For us, it is very important as we generally reduce our inventories by 30%, thus we recover cash flow. It is not negligible.”<p><p>These quotes out of my case studies show that the primary goal of the implementation of Web-based applications is the achievement of transaction cost efficiencies: cost cutting, time saving, and information integration. But do they achieve such results? Sometimes they do sometime they don’t. In order to understand why, I consider it is necessary to take a different perspective from the one taken until now. <p><p>Indeed, existing studies on interorganizational information systems focus on economical and strategic issues and consider organizations as opaque entities. First, issues at hand may not be economic or strategic but social or legal. Next, they neglect that inter-organizational relationships imply a number of long-standing social interactions between individuals of each organization. Moreover, these individuals interpret the mediation project and act taking decision, implementing, or using the mediating technology – that these individuals make sense of the IT mediation project. In the present research, I propose to open the black box of organizations and explore how people sensemaking conditions the achievement of transaction cost benefits and is conditioned by the interorganizational context. My overarching research question is: How do people make sense of the Internet mediation of long-standing interorganizational relationships?<p> / Doctorat en sciences de gestion / info:eu-repo/semantics/nonPublished