3,564 research outputs found
Personal data broker instead of blockchain for students’ data privacy assurance
Data logs about learning activities are being recorded at a growing pace due to the adoption and evolution of educational technologies (Edtech). Data analytics has entered the field of education under the name of learning analytics. Data analytics can provide insights that can be used to enhance learning activities for educational stakeholders, as well as helping online learning applications providers to enhance their services. However, despite the goodwill in the use of Edtech, some service providers use it as a means to collect private data about the students for their own interests and benefits. This is
showcased in recent cases seen in media of bad use of students’ personal information. This growth in cases is due to the recent tightening in data privacy regulations, especially in the EU. The students or their parents should be the owners of the information about them and their learning activities online. Thus they should have the right tools to control how their information is accessed and for what purposes. Currently, there is no technological solution to prevent leaks or the misuse of data about the students or their activity. It seems appropriate to try to solve it from an automation technology perspective. In this paper, we consider the use of Blockchain technologies as a possible basis for a solution to this problem. Our analysis indicates that the Blockchain is not a suitable solution. Finally, we propose a cloud-based solution with a central personal point of management that we have called Personal Data Broker.Peer ReviewedPostprint (author's final draft
Multilateral Transparency for Security Markets Through DLT
For decades, changing technology and policy choices have worked to fragment securities markets, rendering them so dark that neither ownership nor real-time price of securities are generally visible to all parties multilaterally. The policies in the U.S. National Market System and the EU Market in Financial Instruments Directive— together with universal adoption of the indirect holding system— have pushed Western securities markets into a corner from which escape to full transparency has seemed either impossible or prohibitively expensive. Although the reader has a right to skepticism given the exaggerated promises surrounding blockchain in recent years, we demonstrate in this paper that distributed ledger technology (DLT) contains the potential to convert fragmented securities markets back to multilateral transparency.
Leading markets generally lack transparency in two ways that derive from their basic structure: (1) multiple platforms on which trades in the same security are matched have separate bid/ask queues and are not consolidated in real time (fragmented pricing), and (2) highspeed transfers of securities are enabled by placing ownership of the securities in financial institutions, thus preventing transparent ownership (depository or street name ownership). The distributed nature of DLT allows multiple copies of the same pricing queue to be held simultaneously by a large number of order-matching platforms, curing the problem of fragmented pricing. This same distributed nature of DLT would allow the issuers of securities to be nodes in a DLT network, returning control over securities ownership and transfer to those issuers and thus, restoring transparent ownership through direct holding with the issuer.
A serious objection to DLT is that its latency is very high—with each Bitcoin blockchain transaction taking up to ten minutes. To remedy this, we first propose a private network without cumbersome proof-of-work cryptography. Second, we introduce into our model the quickly evolving technology of “lightning networks,” which are advanced two-layer off-chain networks conducting high-speed transacting with only periodic memorialization in the permanent DLT network. Against the background of existing securities trading and settlement, this Article demonstrates that a DLT network could bring multilateral transparency and thus represent the next step in evolution for markets in their current configuration
Blockchain applications in food marketing
Este Trabajo de Fin de Grado analiza los fundamentos de la tecnología blockchain para obtener un
conocimiento básico sobre lo que significa, su origen y evolución, su funcionamiento y las ventajas que
ofrece sobre otras tecnologías digitales. Se presenta brevemente la utilidad de esta tecnología en los
distintos sectores, pero, sobre todo, se detallan las aplicaciones y ventajas del blockchain en el marketing
alimentario. Para una mejor comprensión, se analizan algunos casos de éxito y, por último, a fin de
determinar el grado de conocimiento y aplicación del blockchain en el sector agroalimentario de Castilla
y León se realiza un estudio empírico a través del análisis de los resultados de una encuesta contestada
por 48 empresas.This Bachelor Thesis analyzes the fundamentals of blockchain technology to obtain a basic knowledge
about what it means, its origin and evolution, its operation and the advantages it offers over other digital
technologies. The usefulness of this technology in the different sectors is briefly presented, but above all,
the applications and advantages of blockchain in food marketing are detailed. For a better
understanding, some success stories are analyzed and finally, in order to determine the degree of
knowledge and application of the blockchain in the agri-food sector of Castilla y León an empirical
study is carried out through the analysis of the results of a survey answered by 48 companies
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