Soviet Wall Newspapers

Author(s):  
Birgitte Beck Pristed

The article examines Soviet wall newspapers (stengazety) as a nonelectronic, low-tech medium to discuss the social, material, and visual implications not of its ideological content, but of this genuine socialist medium as such. As a peer-to-peer network for social organization, it assembled readers/writers, educated their political vision, and forced them to act and react, but not always as the mass-printed press and editorial manuals imagined it. At its worst, the wall newspaper incarnated totalitarian socialism and contributed to a totalitarian communication system, not by forbidding citizens to express themselves but by forcing them to do so, not by denying citizens information access but by insisting that citizens should become informal informants themselves. At its best, its encouragement of underprivileged collectives of participatory readers/writers to reuse, appropriate, and remix any material at hand to co-create the unfinished and unfinishable picture of communism represented socialism in its most open and nonauthoritative form.

2021 ◽  
Vol Volume 17, Issue 4 ◽  
Author(s):  
Massimo Bartoletti ◽  
Letterio Galletta ◽  
Maurizio Murgia

Decentralized blockchain platforms have enabled the secure exchange of crypto-assets without the intermediation of trusted authorities. To this purpose, these platforms rely on a peer-to-peer network of byzantine nodes, which collaboratively maintain an append-only ledger of transactions, called blockchain. Transactions represent the actions required by users, e.g. the transfer of some units of crypto-currency to another user, or the execution of a smart contract which distributes crypto-assets according to its internal logic. Part of the nodes of the peer-to-peer network compete to append transactions to the blockchain. To do so, they group the transactions sent by users into blocks, and update their view of the blockchain state by executing these transactions in the chosen order. Once a block of transactions is appended to the blockchain, the other nodes validate it, re-executing the transactions in the same order. The serial execution of transactions does not take advantage of the multi-core architecture of modern processors, so contributing to limit the throughput. In this paper we develop a theory of transaction parallelism for blockchains, which is based on static analysis of transactions and smart contracts. We illustrate how blockchain nodes can use our theory to parallelize the execution of transactions. Initial experiments on Ethereum show that our technique can improve the performance of nodes.


2014 ◽  
Vol 24 (8) ◽  
pp. 2132-2150
Author(s):  
Hong-Yan MEI ◽  
Yu-Jie ZHANG ◽  
Xiang-Wu MENG ◽  
Wen-Ming MA

2013 ◽  
Vol 9 ◽  
pp. 215-225 ◽  
Author(s):  
Tadeu Classe ◽  
Regina Braga ◽  
Fernanda Campos ◽  
José Maria N. David

2018 ◽  
Vol 26 ◽  
pp. 1180-1192 ◽  
Author(s):  
Atin Angrish ◽  
Benjamin Craver ◽  
Mahmud Hasan ◽  
Binil Starly

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