scholarly journals Blockchain technology for accounting and distribution of contributions from a charitable foundation

2021 ◽  
Vol 5 (2(61)) ◽  
pp. 9-14
Author(s):  
Oksana Herasymenko ◽  
Valeriia Bachynska
Keyword(s):  
Web Application ◽  
Web Applications ◽  
Smart Contracts ◽  
Joint Work ◽  
Non Profit ◽  
Software Application ◽  
Blockchain Technology ◽  
Smart Contract ◽  
Seeking Help ◽  
The Cost

The object of research is software for financial accounting and distribution of funds in a non-profit charitable foundation using smart contracts of the Ethereum platform. The work is aimed at designing and implementing a software application for a charitable foundation, which allows to exclude the misuse of funds of a non-profit charitable foundation. The paper proposes an implementation of the Ethereum smart contract for the software of a charitable foundation. In the app, users can apply for financial aid or make a charitable donation. The request for financial support is confirmed by administrators to avoid abuse by those seeking help. Anyone who has a crypto wallet can become a sponsor by transferring funds from its account to a selected request. The sponsor remains incognito when making a charitable contribution. After collecting the entire declared amount, the funds are automatically transferred to the crypto wallet of the request’s owner. A smart contract and a corresponding decentralized web application for interacting with it were experimentally deployed, and their joint work was tested. To implement the smart contract, the Solidity programming language was chosen; developed smart contract converted to bytecode using remix. The resulting bytecode is ready to be deployed on the Ethereum platform. Decentralized web application for interacting with the contract is implemented using Web3.js, Vue.js. A rough estimate of the cost of deploying a project on the Ethereum platform has been made. The deployment and operation of smart contracts and web applications comes with a certain overhead, which is most dependent on the cost of ether. However, this is a justified price to pay for the transparency of transactions and the shadowing of the turnover of funds of the charitable foundation. The results of the research can be used as a basis for further transformation into full-fledged software with the ability to submit all reporting documents to the relevant government agencies and sponsors.

ANALYZING AND IMPROVING WEB APPLICATION QUALITY USING DESIGN PATTERNS

2012 ◽  
Vol 2 (2) ◽  
pp. 112-116
Author(s):  
Shikha Bhatia ◽  
Mr. Harshpreet Singh
Keyword(s):  
Web Application ◽  
Design Pattern ◽  
Design Patterns ◽  
Web Applications ◽  
Past Research ◽  
Software Systems ◽  
Interactive Software ◽  
Web Based ◽  
Software Application ◽  
Execution Speed

With the mounting demand of web applications, a number of issues allied to its quality have came in existence. In the meadow of web applications, it is very thorny to develop high quality web applications. A design pattern is a general repeatable solution to a generally stirring problem in software design. It should be noted that design pattern is not a finished product that can be directly transformed into source code. Rather design pattern is a depiction or template that describes how to find solution of a problem that can be used in many different situations. Past research has shown that design patterns greatly improved the execution speed of a software application. Design pattern are classified as creational design patterns, structural design pattern, behavioral design pattern, etc. MVC design pattern is very productive for architecting interactive software systems and web applications. This design pattern is partition-independent, because it is expressed in terms of an interactive application running in a single address space. We will design and analyze an algorithm by using MVC approach to improve the performance of web based application. The objective of our study will be to reduce one of the major object oriented features i.e. coupling between model and view segments of web based application. The implementation for the same will be done in by using .NET framework.

Morpheus Web Testing: A Tool for Generating Test Cases for Widget Based Web Applications

2021 ◽  
Author(s):  
Romulo de Almeida Neves ◽  
Willian Massami Watanabe ◽  
Rafael Oliveira
Keyword(s):  
User Interfaces ◽  
Web Application ◽  
Web Applications ◽  
Test Cases ◽  
Code Coverage ◽  
Web Testing ◽  
The Cost ◽  
Software Lifecycle ◽  
The Web

Context: Widgets are reusable User Interfaces (UIs) components frequently delivered in Web applications.In the web application, widgets implement different interaction scenarios, such as buttons, menus, and text input.Problem: Tests are performed manually, so the cost associated with preparing and executing test cases is high.Objective: Automate the process of generating functional test cases for web applications, using intermediate artifacts of the web development process that structure widgets in the web application. The goal of this process is to ensure the quality of the software, reduce overall software lifecycle time and the costs associated with tests.Method:We elaborated a test generation strategy and implemented this strategy in a tool, Morpheus Web Testing. Morpheus Web Testing extracts widget information from Java Server Faces artifacts to generate test cases for JSF web applications. We conducted a case study for comparing Morpheus Web Testing with a state of the art tool (CrawlJax).Results: The results indicate evidence that the approach Morpheus Web Testing managed to reach greater code coverage compared to a CrawlJax.Conclusion: The achieved coverage values represent evidence that the results obtained from the proposed approach contribute to the process of automated test software engineering in the industry.

A Study of Use Cases for Smart Contracts Using Blockchain Technology

2021 ◽  
pp. 1823-1844
Author(s):  
S R Mani Sekhar ◽  
Siddesh G M ◽  
Swapnil Kalra ◽  
Shaswat Anand
Keyword(s):  
Natural Disaster ◽  
Vital Role ◽  
Use Cases ◽  
Use Case ◽  
Smart Contracts ◽  
Digital Identity ◽  
Blockchain Technology ◽  
Smart Contract ◽  
Healthcare Finance ◽  
Natural Disaster Management

Blockchain technology is an emerging and rapidly growing technology in the current world scenario. It is a collection of records connected through cryptography. They play a vital role in smart contracts. Smart contracts are present in blockchains which are self-controlled and trustable. It can be integrated across various domains like healthcare, finance, self-sovereign identity, governance, logistics management and home care, etc. The purpose of this article is to analyze the various use cases of smart contracts in different domains and come up with a model which may be used in the future. Subsequently, a detailed description of a smart contract and blockchain is provided. Next, different case-studies related to five different domains is discussed with the help of use case diagrams. Finally, a solution for natural disaster management has been proposed by integrating smart contract, digital identity, policies and blockchain technologies, which can be used effectively for providing relief to victims during times of natural disaster.

scholarly journals Smart Contract: The Concept, Legal Nature, Features of Conclusion and Execution

Legal Concept ◽  
2019 ◽  
pp. 54-60
Author(s):  
Nizami Safarli
Keyword(s):  
Russian Federation ◽  
Legal Regulation ◽  
Smart Contracts ◽  
Advantages And Disadvantages ◽  
Blockchain Technology ◽  
Smart Contract ◽  
Legal Nature ◽  
Domestic Legislation ◽  
The Russian Federation ◽  
Statutory Regulation

Introduction: the paper is devoted to a new phenomenon in business activity in the conditions of IT development that contribute to the creation of secure contractual relations on the Internet on the basis of transactions executed through smart contracts. The author notes that the need for amendments that could fill the loopholes in the current legislation is obvious. And, first of all, it concerns Blockchain technology – the algorithm that mediates the safe development, conclusion and execution of smart contracts. Blockchain technology is considered in the paper as one of the safest means for concluding and executing smart contracts. The author argues that the study of the concept, legal nature and essence of smart contracts is relevant in the light of spreading their share in the total array of transactions in the world economy in conjunction with the changing domestic legislation governing the relevant sphere, as well as the international integration processes affecting the intensification of foreign economic activity of the Russian Federation. The smart contract concepts formulated by the Russian legislator in the process of upgrading the array of statutory regulation under conditions of economy digitalization are studied and compared. The features of conclusion and protection of the smart contract in the civil legislation of the Russian Federation are analyzed. In order to fully articulate the concept of the smart contract, reflecting its essence, functional purpose and legal nature, it is proposed to create a special law that would focus on the conclusion and implementation of “the smart contract” and the specification of the general norms of the civil code. At the same time, the norms of other special laws would supplement and correct the provisions fixed by this act depending on the sphere of managing and the legal regulation branch. The concept of the smart contract is formulated; its value for economic and contractual activity, and also the advantages and disadvantages of its application are established. The possible classifications of smart contracts are given.

scholarly journals Introduction to Blockchain and Cryptocurrenncy

2020 ◽  
Author(s):  
Vidhi Pitroda ◽  
Vraj Shah ◽  
Jinan Fiaidhi
Keyword(s):  
Peer To Peer ◽  
Research Topic ◽  
Smart Contracts ◽  
Blockchain Technology ◽  
Smart Contract ◽  
High Security

In recent years blockchain technology has become mainstream research topic because of its decentralized, peer to peer transaction and anonymity properties. There are several applications of blockchain which are secure and easy as compare to the current techniques. One of the applications is a smart contract. Smart contracts are lines of code which are stored on a blockchain and automatically executed when the conditions defined by the it (developer) are met. This smart contract with the addition of blockchain technology can do task fast and with high security. In this paper we have developed a smart contract for a generalized notary application on solidity, Ethereum and the application is tested using the truffle suite. Furthermore, applications and their methodology for notary applications are also mentioned.

scholarly journals Blockchain-based Solution for COVID-19 Digital Medical Passports and Immunity Certificates

2021 ◽  
Author(s):  
Haya R. Hasan ◽  
Khaled Salah ◽  
Raja Jayaraman ◽  
Junaid Arshad ◽  
Ibrar Yaqoob ◽  
...  
Keyword(s):  
Security Analysis ◽  
File Systems ◽  
Smart Contracts ◽  
Design Development ◽  
False Information ◽  
Effective Response ◽  
Smart Contract ◽  
Medical Facilities ◽  
The World ◽  
The Cost

COVID-19 has emerged as a highly contagious disease which has caused a devastating impact across the world with a very large number of infections and deaths. Timely and accurate testing is paramount to an effective response to this pandemic as it helps identify infections and therefore mitigate (isolate/cure) them. In this paper, we investigate this challenge and contribute by presenting a blockchain-based solution that incorporates self-sovereign identity, re-encryption proxies, and decentralized storage, such as the interplanetary file systems (IPFS). Our solution implements digital medical passports (DMP) and immunity certificates for COVID-19 test-takers. We present smart contracts based on the Ethereum blockchain written and tested successfully to maintain a digital medical identity for test-takers that help in a prompt trusted response directly by the relevant medical authorities. We reduce the response time of the medical facilities, alleviate the spread of false information by using immutable trusted blockchain, and curb the spread of the disease through DMP. We present a detailed description of the system design, development, and evaluation (cost and security analysis) for the proposed solution. Since our code leverages the use of the on-chain events, the cost of our design is almost negligible. We have made our smart contract codes publicly available on Github.

scholarly journals Blockchain Smart Contract Meta-modeling

2021 ◽  
Author(s):  
Nicolás Sánchez-Gómez ◽  
Jesus Torres-Valderrama ◽  
Manuel MEJÍAS RISOTO ◽  
Alejandra GARRIDO
Keyword(s):  
Smart Contracts ◽  
Meta Model ◽  
Business Environments ◽  
Blockchain Technology ◽  
Collaborative Processes ◽  
Requirements Specifications ◽  
Smart Contract ◽  
Meta Modeling ◽  
Software Engineers ◽  
Future Work

One of the key benefits of blockchain technology is its ability to keep a permanent, unalterable record of transactions. In business environments, where companies interact with each other without a centralized authority to ensure trust between them, this has led to blockchain platforms and smart contracts being proposed as a means of implementing trustworthy collaborative processes. Software engineers must deal with them to ensure the quality of smart contracts in all phases of the smart contract lifecycle, from requirements specifications to design and deployment. This broad scope and criticality of smart contracts in business environments means that they have to be expressed in a language that is intuitive, easy-to-use, independent of the blockchain platform employed, and oriented towards software quality assurance. In this paper we present a key component: a first outline of a UML-based smart contract meta-model that would allow us to achieve these objectives. This meta-model will be enriched in future work to represent blockchain environments and automated testing.

scholarly journals Consortium Blockchain Smart Contracts for Musical Rights Governance in a Collective Management Organizations (CMOs) Use Case

2020 ◽  
Vol 12 (8) ◽  
pp. 134
Author(s):  
Nikolaos Kapsoulis ◽  
Alexandros Psychas ◽  
Georgios Palaiokrassas ◽  
Achilleas Marinakis ◽  
Antonios Litke ◽  
...  
Keyword(s):  
Music Industry ◽  
Use Case ◽  
Smart Contracts ◽  
Non Profit ◽  
Collective Management ◽  
Distributed Ledger ◽  
Smart Contract ◽  
Distributed Ledger Technology ◽  
End To End ◽  
Permissioned Blockchains

Private and permissioned blockchains are conceptualized and mostly assembled for fulfilling corporations’ demands and needs in the context of their own premises. This paper presents a complete and sophisticated end-to-end permissioned blockchain application for governance and management of musical rights endorsed by smart contract development. In a music industry use case, this disclosed solution monitors and regulates conflicting musical rights of diverse entities under a popular permissioned distributed ledger technology network. The proposed implementation couples various and distinct business domains across the music industry organizations and non-profit blockchain associations.

A blockchain-based decentralized booking system

2020 ◽  
Vol 35 ◽  
Author(s):  
Naipeng Dong ◽  
Guangdong Bai ◽  
Lung-Chen Huang ◽  
Edmund Kok Heng Lim ◽  
Jin Song Dong
Keyword(s):  
Process Analysis ◽  
Smart Contracts ◽  
Model Checker ◽  
Blockchain Technology ◽  
The Cost

Abstract Blockchain technology has rapidly emerged as a decentralized trusted network to replace the traditional centralized intermediator. Especially, the smart contracts that are based on blockchain allow users to define the agreed behaviour among them, the execution of which will be enforced by the smart contracts. Based on this, we propose a decentralized booking system that uses the blockchain as the intermediator between hoteliers and travellers. The system enjoys the trustworthiness of blockchain, improves efficiency and reduces the cost of the traditional booking agencies. The design of the system has been formally modelled using the CSP# language and verified using the model checker Process Analysis Toolkit. We have implemented a prototype decentralized booking system based on the Ethereum ecosystem.

scholarly journals Survey of Smart Contract Framework and Its Application

Information ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 257
Author(s):  
Edi Surya Negara ◽  
Achmad Nizar Hidayanto ◽  
Ria Andryani ◽  
Rezki Syaputra
Keyword(s):  
Literature Review ◽  
Theoretical Basis ◽  
Smart Contracts ◽  
Blockchain Technology ◽  
Smart Contract ◽  
Exploratory Approach ◽  
Implementation Studies ◽  
Technological Developments

This article is a literature review on smart contract applications in various domains. The aim is to investigate technological developments and implementation of smart contracts in various domains. For this purpose, the theoretical basis of various papers that have been published in recent years is used as a source of theoretical and implementation studies. Smart contracts are the latest technology that is developing in line with the development of blockchain technology. The literature review that we have carried out explains that smart contracts work automatically, control, or document legally relevant events and actions in accordance with the agreements set forth in the contract agreement. This technology is one of the newest technologies that is expected to provide solutions for trust, security, and transparency in various domains. This literature review was conducted using an exploratory approach. This literature review focuses on reviewing frameworks, methods, and simulations of smart contract implementations in various domains.

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