Az uniós válság hatása a lakosság- és elitpercepciókra

Az EU válságai eddig nem feszítették szét az unió kereteit, sőt nemegyszer éppen az integráció szorosabbá válásához vezettek. Az utóbbi években azonban a gazdasági, pénzügyi, szociális és legitimációs krízis egymásra rakódott, ami után egyre nehézkesebbnek látszik a további integráció. Az EU a válságból való kiutat az intézményrendszer újraszabályozásában igyekezett megtalálni. Ilyen nagyszabású átalakítást a „posztfunkcionalista” Európában aligha lehet végrehajtani az európai állampolgárok támogatása nélkül. De a válság válságtudatot okozott, az euroszkepticizmus 2012-ben érte el a mélypontot. A következő írás az EU válságának elemzése után az elit- és a lakossági érzékeléseket, továbbá azok gazdasági magyarázatait vizsgálja nemzetközi survey típusú felmérések alapján

Synthesis and enantiomeric recognition studies of a novel 5,5-dioxophenothiazine-1,9 bis(thiourea) containing glucopyranosyl groups

A novel optically active 5,5-dioxophenothiazine-1,9 bis(thiourea) containing glucopyranosyl groups was synthesized and its enantiomeric recognition properties were examined towards the enantiomers of tetrabutylammonium salts of chiral α-hydroxy and N-protected α-amino acids using UV–vis spectroscopy

A Bayesian Approach to Identify Bitcoin Users

Bitcoin is a digital currency and electronic payment system operating over a peer-to-peer network on the Internet. One of its most important properties is the high level of anonymity it provides for its users. The users are identified by their Bitcoin addresses, which are random strings in the public records of transactions, the blockchain. When a user initiates a Bitcoin-transaction, his Bitcoin client program relays messages to other clients through the Bitcoin network. Monitoring the propagation of these messages and analyzing them carefully reveal hidden relations. In this paper, we develop a mathematical model using a probabilistic approach to link Bitcoin addresses and transactions to the originator IP address. To utilize our model, we carried out experiments by installing more than a hundred modified Bitcoin clients distributed in the network to observe as many messages as possible. During a two month observation period we were able to identify several thousand Bitcoin clients and bind their transactions to geographical locations

Designing cooperation mechanisms for supply chains

The paper defines generic requirements towards cooperative planning in the nucleus of any supply network that is constituted by a pair of autonomous manufacturer and supplier who possess asymmetric information on demand forecast and costs, respectively. Then a novel way is suggested for investigating this problem by means of the apparatus of mechanism design. The analysis results in some provable generic properties as for efficiency and truthfulness, and shows the impossibility of fair cost and profit sharing. Further on, design principles towards a payment scheme are devised that provide incentive for the partners to cooperate in order to minimize costs. This payment can be considered the price for a flexible supply service. As examples, the generic framework is instantiated with two particular cooperative supply mechanisms