Wrapping Trust for Interoperability: A Preliminary Study of Wrapped Tokens

Blockchains are traditionally blind to the real world. This implies reliance on third parties called oracles when extrinsic data are needed for smart contracts. Oracle implementation, however, is still controversial and debated due to the reintroduction of trust and a single point of failure. The blindness to the real world also makes blockchains unable to communicate with each other, preventing any form of interoperability. This limitation prevents, for example, liquidity held in Bitcoin from flowing into DeFi applications. An early approach to the interoperability issue is constituted by “wrapped tokens”, representing blockchain native tokens issued on a non-native blockchain. Similar to how oracles reintroduce trust and a single point of failure, the issuance of wrapped tokens involves third parties whose characteristics need to be considered when evaluating the advantages of “crossing-chains”. This paper provides an overview of the available wrapped tokens and the main issuing procedures. Benefits, limitations, and implications for trust are listed and discussed.

Hermann Löns’ “Quintär” – an early approach to the geological stratigraphy of the Age of Humans and its significance in geosciences

In 1908, Hermann Löns outlined the concept of a Quintär” (“Quintary period”) to describe geological and biological manifestations of the Age of Humans. His definition of the “Quintary” consisted of twocomponents: a lithostratigraphical (“Quintary deposits” or “Quintary stratum”), and a faunistic (“Quintary fauna”) one. With a view on the stratigraphical component, Löns already anticipated the approach of the 21st Century to establish a geological definition for the Age of Humansbased on physical manifestations and geological evidence, that is nowadays reflected in the attempts to define the anthropocene. Transposed into modern terminology, the “Quintary stratum” is definedas a lithostratigraphical unit (Quintary Lithosome), that contains all deposits in which non-anthropogenic sedimentary processes have been replaced or modified by anthropogenic or technogenic activity. The Quintary Lithosome has a diachronous base and intercalates in its lower part vertically and laterally with non-anthropogenic deposits of the Holocene Series. The upper part, that correlates with the anthropocene series, has a global distribution. The Quintary Lithosome is exclusively defined for geological stratigraphies on Earth. It widely – though not totally – overlaps with the archaeosphere as a partial equivalent in archaeological stratigraphy. Previous suggestions to redefine the mostrecent period of Earth history by adopting a biostratigraphical scheme based on hominids and their cultural manifestations, are rejected hereinfor the realm of geological stratigraphy. However, for the context of archaeological stratigraphy, it is suggested to define the phase of cultural manifestations of hominins and their corresponding deposits as the Anthropian age and deposits, respectively.

Qubit-based momentum measurement of a particle

An early approach to include pointers representing measurement devices into quantum mechanics was given by von Neumann. Based on this idea, we model such pointers by qubits and couple them to a free particle, in analogy to a classical time-of-flight arrangement. The corresponding Heisenberg dynamics leads to pointer observables whose expectation values allow us to reconstruct the particle’s momentum distribution via the characteristic function. We investigate different initial qubit states and find that such a reconstruction can be considerably simplified by initially entangled pointers. Graphical abstract

Scripting the radio interview: Performing Desert Island Discs

Desert Island Discs reveals much about the BBC’s early approach to the radio interview. The radio programme calls for its audience, the host and a ‘castaway’ to engage in a fantasy where guests are invited to preselect musical records to accompany them on a fictional desert island. This concept acts as a vehicle in which the host asks questions or makes statements about the significance of these records, in order to unearth the private motivations of a public figure. This has proved itself as a predictable, reassuring and innovative format that all parties must commit to. This article addresses the first decade of the programme, where all interviews were scripted. Studying the origins of this series allows us to cast some assertions on the ways that scripting was used to communicate and mediate a host’s persona and an interviewee’s past and personality. The use of scripting was intended to create a sense of informality, humour and theatrical drama. Contextualizing these types of scripted exchanges further informs our understanding of the radio interview within our mediated cultural heritage.

Sutton Misses the Boat

This chapter describes how, by 1766, Daniel Sutton had reached his zenith, apparently untroubled by the competition of Thomas Dimsdale and others who believed they had discovered the secrets of his success. It was then that Sutton learned that a whole new world of riches awaited him and his acolytes across the Channel. Smallpox was rife in Europe and Russia and yet inoculation was rarely practised and fiercely opposed where it was attempted. But news of the success of Suttonian inoculation, promoted indirectly by the translation of Dimsdale's guide to the 'modern method' attracted the attention of royalty, who were as vulnerable to the scourge of smallpox as their subjects. England produced the most skilled inoculators and a demand for their services grew. Sutton's name would be top of the list and an early approach was made to him.

Reading in Phenomenology: Heidegger’s Approach to Religious Experience in St. Paul and St. Augustine

The importance of religious figures in Heidegger’s early development has long been understood. Beginning especially in the WS-1920, with the Phenomenology of Religious Life lectures, figures such as Paul and Augustine played essential roles in his early attempt to move beyond the legacy of Cartesian thought. Despite appearing to secularize these accounts, Heidegger nonetheless implies that it is because of their religiosity, and not in spite of it, that they are of phenomenological interest. For this reason, the exact status of religious descriptions in his phenomenology has been a source of contention. My argument in this paper, is that this status is best understood by turning to Heidegger’s early approach to phenomenological reading. This approach, I argue, is grounded in a performative model of language, exemplified in Destruction [Destruktion], and defines the limits within which he can engage with the religious character of historical texts.

Objects-Early Approach to Teaching Informatics at School Level

The technology development and the changing requirements of the labor market lead to changes in education. When we talk about computer science and information technology these changes need to be more frequent and extensive. We need not only a change in the curricula content to reach our education aims, but a thorough approach pursuant to the curriculum and the psychological characteristics of the contemporary students as well. In this article we will outline the main approaches used to teach CS at school and present our ideas based on the combination of the best classical approaches practice and experience from the application of innovative didactic methods and tools.