approved: Bechir Hamdaoui In this paper, we propose a credit-based resource allocation technique for dynamic spectrum access (DSA) systems that is robust against malicious and sel sh behaviors and ensures good overall system fairness performance while also allowing spectrum users to achieve high amounts of service. We also propose a new objective function that, when combined with the proposed c...

Mobile crowdsensing systems employ crowd smartphones to collect data using these device-embedded sensors. The increase in the number of users and volume has limited possibility cellular networks. In this regard, collector need be able send their publishers with less delay device-to-device (D2D) communication. This paper proposes an incentive mechanism for improving transmission rate multiple mo...

Credit networks model transitive trust (or credit) between users in a distributed environment and have recently seen a rapid increase of popularity due to their flexible design and robustness against intrusion. They serve today as a backbone of real-world IOweYou transaction settlement networks such as Ripple and Stellar, which are deployed by various banks worldwide, as well as several other s...

The financial system of the United States contains two large subsystems. The function of the first, generally referred to as monetary policy, is to control the total volume of credit for the purpose of aggregate economic stabilization. The second sub-system, which has no name, consists of a maze of regulations, institutions and tax practices designed to influence the allocation of credit, and h...

We consider a set U of users connected in a social network GS = (U,F ), where the social link set F ⊂ U × U defines the friends relations between users. If user i treats j as his friend, i connects to j through a directed link 〈i, j〉 ∈ F . Suppose each user can provide some services, and also want to consume some services provided by other users. We can define a demand graph GD = (U,D), where D...

MeDoc has developed cost and payment models suitable for electronic library services. The partners cooperating in the MeDoc service are users, providers and producers of information products. The cost models ooered to the users are various forms of subscription and "pay per view"-purchase. As payment models both credit and debit models are considered suitable for the MeDoc service. Initially on...

The I owe you (IOU) credit network Ripple is one of the most prominent alternatives in the burgeoning field of decentralized payment systems. Ripple’s path-based transactions set it apart from cryptocurrencies such as Bitcoin. Its pseudonymous nature, while still maintaining some regulatory capabilities, has motivated several financial institutions across the world to use Ripple for processing ...