FILE SHARING IN P2P SYSTEMS FOR THE EXPECTED HIGH CHURN

Most of the file sharing networks plays a major role in the current networking domain. On that the file sharing between the users is an important work takes place on those systems. When considering each of the system, the need is a performance improvement in the network. We address the problem of highly transient populations in unstructured and loosely structured peer-to-peer (P2P) systems. In existing system they consider the distributed system and causes collision while communication. But we consider centralized system and overcome the collision during file sharing and also the existing system drawbacks

Elders Know Best- Handling Churn in Less Structured P2P Systems

We address the problem of highly transient populations in unstructured and loosely-structured peer-to-peer systems. We propose a number of illustrative query-related strategies and organizational protocols that, by taking into consideration the expected session times of peers (their lifespans), yield systems with performance characteristics more resilient to the natural instability of their environments. We first demonstrate the benefits of lifespan-based organizational protocols in terms of end-application performance and in the context of dynamic and heterogeneous Internet environments. We do this using a number of currently adopted and proposed query-related strategies, including methods for query distribution, caching and replication. We then show, through trace-driven simulation and wide-area experimentation, the performance advantages of lifespan-based, query-related strategies when layered over currently employed and lifespan-based organizational protocols. While merely illustrative, the evaluated strategies and protocols clearly demonstrate the advantages of considering peers ’ session time in designing widely-deployed peer-to-peer systems.

Text Similarity Between Concepts Extracted from Source Code and Documentation

Context: Constant evolution in software systems often results in its documentation losing sync with the content of the source code. The traceability research field has often helped in the past with the aim to recover links between code and documentation, when the two fell out of sync. Objective: The aim of this paper is to compare the concepts contained within the source code of a system with those extracted from its documentation, in order to detect how similar these two sets are. If vastly different, the difference between the two sets might indicate a considerable ageing of the documentation, and a need to update it. Methods: In this paper we reduce the source code of 50 software systems to a set of key terms, each containing the concepts of one of the systems sampled. At the same time, we reduce the documentation of each system to another set of key terms. We then use four different approaches for set comparison to detect how the sets are similar. Results: Using the well known Jaccard index as the benchmark for the comparisons, we have discovered that the cosine distance has excellent comparative powers, and depending on the pre-training of the machine learning model. In particular, the SpaCy and the FastText embeddings offer up to 80% and 90% similarity scores. Conclusion: For most of the sampled systems, the source code and the documentation tend to contain very similar concepts. Given the accuracy for one pre-trained model (e.g., FastText), it becomes also evident that a few systems show a measurable drift between the concepts contained in the documentation and in the source code.</p

Combining SOA and BPM Technologies for Cross-System Process Automation

This paper summarizes the results of an industry case study that introduced a cross-system business process automation solution based on a combination of SOA and BPM standard technologies (i.e., BPMN, BPEL, WSDL). Besides discussing major weaknesses of the existing, custom-built, solution and comparing them against experiences with the developed prototype, the paper presents a course of action for transforming the current solution into the proposed solution. This includes a general approach, consisting of four distinct steps, as well as specific action items that are to be performed for every step. The discussion also covers language and tool support and challenges arising from the transformation

Inclusive business models? How SMEs are developing inclusive value chains and combating social exclusion in bottom-of-the-pyramid markets

Research suggests that private firms can contribute to addressing poverty by prioritising the inclusion of bottom-of-the-pyramid (BoP) communities in global financing, commerce and consumption value chains. However existing evidence have focused on large multinationals. An understanding of how small firms incorporate the inclusion of BoP communities in their value chain is critical remains under-researched. Drawing on the literature integrating entrepreneurship, inclusion and business model this article develops a qualitative study of how three agribusiness in Sierra Leone, Cameroon and Kenya. The findings highlight opportunities and challenges facing entrepreneurs in pursuing inclusive business opportunities African economies

Modern trends in digital transformation of marketing & management

The monograph examines the current trends in the development of digital technologies in marketing, management and business administration. The prospects for the development of digital technologies in various sectors of the economy of Ukraine and the trends of the influence of digital technologies on global shifts in the systems of marketing management and business administration are determined. The transformations of business models in the conditions of the digital economy are analyzed, the impact of blockchain technologies on the development of promising areas of the marketing management system and business administration is analyzed. Reasonable impact of digital technologies on the transformation of management systems in social, public, legal and administrative spheres and various sectors of the economy. The contours of the formation of the digital economy in the sectors of economic activity and the social sphere have been developed