In this paper, we present a flexible framework for extending a component model with transactions. We first discuss key issues of combining components with transactions, and different approaches to achieve an appropriate level of transactional functionality in components. We distinguish between the explicit and implicit component participation approaches that differ by whether a component implem...

It is generally agreed that one of the key services of componentbased systems are transactions. However, an agreement on how components should be involved in transactions is still missing. In this paper, we discuss some of the key issues of combining components with transactions, and different approaches to achieve an appropriate level of transactional functionality in components. We distinguis...

Cross-organizational workflow management is an essential ingredient for process integration in virtual enterprises. To obtain cross-organizational workflow processes with robust semantics, these processes should be supported by highlevel cross-organizational transaction management. In this context, transaction management should support both intraand inter-organizational transaction semantics. A...

Modern cryptocurrency systems, such as Ethereum, permit complex financial transactions through scripts called smart contracts. These smart contracts are executed many, many times, always without real concurrency. First, all smart contracts are serially executed by miners before appending them to the blockchain. Later, those contracts are serially re-executed by validators to verify that the sma...

In dynamic change environments the concept of the psychological contracts is tested as organisations pursue more transactional relationships with their employees and as employees are encouraged to pursue protean careers. With such increased emphasis on self-serving personal and organisational strategies, one may question whether a ‘psychological contract’ continues to serve a useful purpose in ...

The optimal contract and contract parameters are presented when a shipper and a capacitated transport service provider interact repeatedly to renew procurement agreements for one product in a multi period game. Three forms of contracts which enable credible information sharing are analyzed: a priceonly relational contract, a minimum purchase commitment or a quantity flexibility contract. A back...

This paper describes a flexible distributed transactional workflow environment based on an extensible object-oriented framework built around class libraries, application programming interfaces, and shared services. The purpose of this environment is to support a range of EC-like business activities including the support of financial transactions and electronic contracts. This environment has as...

This paper proposes an efficient framework to execute Smart Contract Transactions (SCTs) concurrently based on object semantics, using optimistic Single-Version Object-based Software Transactional Memory Systems (SVOSTMs) and Multi-Version OSTMs (MVOSTMs). In our framework, a multi-threaded miner constructs Block Graph (BG), capturing the object-conflicts relations between SCTs, stores it in bl...

We have proposed the TxQoS (Transactional Quality of Service) approach to infuse transactional semantics into contracts so that a gap between business and technical communities with regard to transaction awareness is filled. In this paper we continue to refine the proposed TxQoS concepts in SOA (Service Oriented Architecture) context. We illustrate the complete TxQoS picture by a scenario with ...