From Golden to Unimodular Cryptography

We introduce a natural generalization of the golden cryptography, which uses general unimodular matrices in place of the traditional Q-matrices, and prove that it preserves the original error correction properties of the encryption. Moreover, the additional parameters involved in generating the coding matrices make this unimodular cryptography resilient to the chosen plaintext attacks that worked against the golden cryptography. Finally, we show that even the golden cryptography is generally unable to correct double errors in the same row of the ciphertext matrix, and offer an additional check number which, if transmitted, allows for the correction.Comment: 20 pages, no figure

A Tale of Two Congresses: The Psychological Study of Psychical, Occult, and Religious Phenomena, 1900-1909

© 2014 Wiley Periodicals, Inc. In so far as researchers viewed psychical, occult, and religious phenomena as both objectively verifiable and resistant to extant scientific explanations, their study posed thorny issues for experimental psychologists. Controversies over the study of psychical and occult phenomena at the Fourth Congress of International Psychology (Paris, 1900) and religious phenomena at the Sixth (Geneva, 1909) raise the question of why the latter was accepted as a legitimate object of study, whereas the former was not. Comparison of the Congresses suggests that those interested in the study of religion were willing to forego the quest for objective evidence and focus on experience, whereas those most invested in psychical research were not. The shift in focus did not overcome many of the methodological difficulties. Sub-specialization formalized distinctions between psychical, religious, and pathological phenomena; obscured similarities; and undercut the nascent comparative study of unusual experiences that had emerged at the early Congresses

Party spirit: producing a communist civil religion in contemporary China

The Chinese Communist Party is confronted with a growing gap that separates the rhetoric about socialism and party rule from the individualism and materialism caused by capitalism and opening up to the outside world. In response, the Party has developed strategies that draw on an understanding of the dedication to the Party that is specifically religious, yet does not require belief, conviction or faith in a doctrine. These strategies revolve around the Leninist concept of ‘Party spirit’ that, paradoxically, has been turned into a commodity that can be produced, supplied and consumed. Drawing on insights from the anthropology of pilgrimage, tourism and religion, these strategies will be discussed in the context of party cadre education and so-called ‘red tourism.’ The article concludes that the Party is shaping its evolution from an infallible bearer of ideological dogma to a sacred object of worship as part of a new ‘communist civil religion.’Asian Studie

Actin acting at the Golgi

The organization, assembly and remodeling of the actin cytoskeleton provide force and tracks for a variety of (endo)membrane-associated events such as membrane trafficking. This review illustrates in different cellular models how actin and many of its numerous binding and regulatory proteins (actin and co-workers) participate in the structural organization of the Golgi apparatus and in traf- ficking-associated processes such as sorting, biogenesis and motion of Golgi-derived transport carriers