Having adequate, sufficient and timely information and data is very important for investors' decision making. Processing information and allocating the asset are two fundamental tasks in the securities market and the stock price is more likely to have the nature of disclosure, information effectiveness and asset allocation efficiency. Thus, in this research, the effects of large block transacti...

Crypto-currencies based on the blockchain architecture cannot scale to thousands of transactions per second. We design a new cryptocurrency architecture, called the blockclique, combining transaction sharding, where transactions are separated into multiple groups based on their input address, and a multithreaded directed acyclic block graph structure, where each block references one previous bl...

Existing storage stacks are top-heavy and expect little from block storage. As a result, new high-level storage abstractions – and new designs for existing abstractions – are difficult to realize, requiring developers to implement from scratch complex functionality such as failure atomicity and fine-grained concurrency control. In this paper, we argue that pushing transactional isolation into t...

Bitcoin is a potentially disruptive new crypto-currency based on a decentralized opensource protocol which is gradually gaining popularity. Perhaps the most important question that will affect Bitcoin’s success, is whether or not it will be able to scale to support the high volume of transactions required from a global currency system. We investigate the restrictions on the rate of transaction ...

Atomicity is a widely required property of Web service transactions that are executed in distributed networks. Compared to fixedwired networks, atomicity in mobile networks is much more challenging due to network failures, e.g. network partitioning and node failures, which make global knowledge concerning the operational status of devices difficult or even impossible to achieve. In comparison t...

The security of the Bitcoin system is based on having a large amount of computational power in the hands of honest miners. Such miners are incentivized to join the system and validate transactions by the payments issued by the protocol to anyone who creates blocks. As new bitcoins creation rate decreases (halving approximately every 4 years), the revenue derived from transaction fees start to h...

Recent embedded processor architectures containing multiple heterogeneous cores and non-coherent caches, bring renewed attention to the use of Software Transactional Memory (STM) as a building block for developing parallel applications. STM promises to ease concurrent and parallel software development, but relies on the possibility of abort conflicting transactions to maintain data consistency,...

While showing great promise, Bitcoin requires users to wait tens of minutes for transactions to commit – even then offering only probabilistic guarantees. This work introduces ByzCoin, a novel Byzantine consensus protocol that leverages scalable collective signing to commit Bitcoin transactions irreversibly within seconds. ByzCoin achieves Byzantine consensus while preserving Bitcoin’s open mem...

Due to the highly communicative character of electronic commerce transactions, open-edi representation languages such as FLBC, take the speech act (operator) as their basic building block. The advantage of this approach is that the `deep structure' of electronic commerce transactions is addressed rather than the form. In this paper, we try to reveal higher-level units of speech acts which are m...