scholarly journals The Modification of pBFT Algorithm to Increase Network Operations Efficiency in Private Blockchains

2021 ◽  
Vol 11 (14) ◽  
pp. 6313
Author(s):  
Youn-A Min
Keyword(s):  
Local Governments ◽  
Consensus Algorithm ◽  
Private Institutions ◽  
Governmental Agencies ◽  
Blockchain Technology ◽  
Efficient Management ◽  
Algorithm Stability ◽  
Efficient Data ◽  
Network Operations ◽  
Verification Process

The use of blockchain technology is becoming more widespread. Governments have expanded their use of the technology from online polls to business management of smaller local governments while private institutions have increased their services from financial to medical services management. This paper presents the modified pBFT blockchain consensus algorithm for a more efficient data management method in cases of applying blockchains in authorized nodes such as governmental agencies. The network communication cost was minimized while the consensus accuracy was maximized by applying a method of simplifying the request management process and electing the reliability-based consensus node during the pBFT consensus algorithm process. By applying the modified pBFT consensus algorithm, stability and speed of the consensus and verification process among various organizations can be guaranteed as well as application in efficient management and value creation of data.

scholarly journals Blockchain Technology for Winning Consumer Loyalty: Social Norm Analysis Using Structural Equation Modeling

Mathematics ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 532
Author(s):  
María de los Ángeles Pérez-Sánchez ◽  
Zhuowei Tian ◽  
Almudena Barrientos-Báez ◽  
José Gómez-Galán ◽  
Hanliang Li
Keyword(s):  
Structural Equation Modeling ◽  
Technology Acceptance ◽  
Social Exchange ◽  
Local Governments ◽  
Structural Equation ◽  
Social Norm ◽  
New Technologies ◽  
Equation Modeling ◽  
Consumer Loyalty ◽  
Blockchain Technology

Remarkable changes have taken in social operation mode and consumers’ behavior mode because of the foot ban during the pandemic spread of COVID-19. Digital technologies such as Blockchain have shown potential in gaining competitive advantages for enterprises in such situations. This study aims to provide an insight into how to gain consumer loyalty through the use of modern and efficient Blockchain technology. In contrast to the current literature, this study combined the technology acceptance model of planned behavior theory, social exchange theory to explain the loyalty of an online travel agency (OTA) consumer. A self-administered questionnaire was used to collect data from citizens in Hangzhou, a city full of technological innovation atmosphere. Using structural equation modeling with SmartPLS©, responses from 1403 citizens were analyzed. Social norm was discovered to have a positive and significant association with the consumers’ attitude toward technology and thus enhancing the perceived usability and hedonism of OTA application, which can increase consumer loyalty. The findings suggested OTAs may gain consumers’ loyalty through adopting Blockchain technology, and local governments have played a key role in creating such an environment. New technologies have become essential professional and social tools for society. The technological environment and Blockchain within the tourism sector are fundamental elements of China’s economic engine.

scholarly journals DDNB—Doubly Decentralized Network Blockchain Architecture for Application Services

2020 ◽  
Vol 10 (15) ◽  
pp. 5212
Author(s):  
Youhwan Seol ◽  
Jaehong Ahn ◽  
Sehyun Park ◽  
Mookeun Ji ◽  
Heungseok Chae ◽  
...  
Keyword(s):  
Processing Speed ◽  
Prototype System ◽  
Proof Of Concept ◽  
Service Platform ◽  
Blockchain Technology ◽  
Platform Architecture ◽  
Application Service ◽  
Verification Process ◽  
Application Developers

Decentralization and immutability characteristics of blockchain technology has attracted numerous blockchain-based systems and applications to be proposed. However, technical shortcomings such as low transaction speed, complexity, scalability, and vulnerability to certain attacks have been identified, making it challenging to use the technology on general consumer applications and services. To address the problem, we propose a new application service platform architecture called DDNB (Doubly Decentralized Network Blockchain). DDNB divides the system into multiple layers in order to take advantage of permissioned blockchain for its processing speed and security, while allowing permissionless open use of the system to application developers. To allow any node to freely participate in application services, DDNB adopts a novel periodic node self-verification process and query chaining mechanism to authenticate newly joining nodes and validate transactions effectively and efficiently. The proposed architecture is evaluated in terms of its processing speed and security on a real proof-of-concept prototype system.

scholarly journals BLOCKCHAIN TECHNOLOGY AS AN ANTI-CORRUPTION MANAGEMENT TOOL

2021 ◽  
Vol 7 (167) ◽  
pp. 46-50
Author(s):  
S. Burlutska ◽  
O. Chabanenko
Keyword(s):  
Real Time ◽  
Effective Means ◽  
Management Tool ◽  
Human Society ◽  
Private Institutions ◽  
Identity Verification ◽  
Transaction Data ◽  
Blockchain Technology ◽  
The World ◽  
Money Transfers

The world has not yet come up with a single recipe for fighting corruption. But thanks to constant progress, anti-corruption strategies are replenished with effective innovation mechanisms. The global experience of using blockchain opens up new prospects for eliminating corruption in the world. Blockchain is an opportunity not only to modernize outdated functional systems, but also to apply new, more effective means of combating corruption and cybercrime. One of the main advantages of the blockchain is that all network participants have a register of transaction data. Therefore, if someone decides to hide, delete or change their recalculations in the accounting book, then copies of these transactions still remain in tens of thousands of other users and the system immediately accesses them. Therefore, a few minutes will be enough to solve the issues of detecting a crime. Today, it is worth highlighting 3 types of widespread use of blockchain technology in the fight against corruption: identity verification, asset registration and tracking of monetary transactions. For example, you can check the purpose of money transfers in real time, see salary payments, and compare prices among suppliers. Like any type of crime, corruption in human society cannot be completely excluded. However, decentralized platforms functioning on blockchain technology, already today, firstly, can directly bring together the customer and the executor, and secondly, all the conditions agreed upon by the participants can then be easily verified (thus, it will be impossible to imperceptibly inflate the price when using blockchain). Blockchain technology is in demand because it creates an unprecedented degree of trust in information in relationships between individuals and public organizations, or between the state, people and private institutions.

scholarly journals Verification Of Independent Study Assessment Using Blockchain Technology

2020 ◽  
Vol 2 (11) ◽  
pp. 15-21
Author(s):  
Ria Dwi I’zzaty
Keyword(s):  
Teaching And Learning ◽  
Independent Study ◽  
Assessment System ◽  
Learning System ◽  
Assessment Process ◽  
Decentralized System ◽  
Blockchain Technology ◽  
Technological Developments ◽  
Verification Process ◽  
Student Grades

Current technological developments greatly impact the assessment verification system. To find out the student benchmarks in the results of teaching and learning activities during the learning system assessment process is very important in the scope of higher education. With the existence of blockchain technology widely applied in the world of Education, having the advantage of a decentralized system and strong cryptography can help universities in building infrastructure. Universitas Raharja is one of the educational institutions that has implemented an online assessment system (PEN +), which will use blockchain technology to verify the assessment of independent studies. which provides services to Raharja University lecturers in verifying student grades that can be accessed anywhere and at any time. However, currently the verification process for the independent study assessment that has been carried out is still done manually which results in verification not with very strong security. The existence of an independent study assessment verification uses blockchain technology to produce strong data security that did not occur before. In the PEN + lecturer assessment system for the independent study assessment verification process, it cannot yet enter the value of Independent study (IS) in real time. Therefore, there is a need for development in this blockchain technology for the verification process of independent study assessment. In this study there were 10 (ten) literary studies on verification of valuation. Thus there are several benefits that lecturers need not hesitate to verify the assessment, the process by using blockchain technology produces very strong security.

Blockchain Technology in China's Digital Economy

2022 ◽  
pp. 132-157
Author(s):  
Poshan Yu ◽  
Ruixin Gong ◽  
Michael Sampat
Keyword(s):  
Local Governments ◽  
Digital Economy ◽  
Institutional Setting ◽  
Human Society ◽  
Financial Industry ◽  
New Production ◽  
Blockchain Technology ◽  
Production Factors ◽  
Production Organization ◽  
Financial Technology

Compared with the traditional industrial economy, the Chinese digital economy uses brand-new production factors and production organization methods to bring changes to human society and promote the transformation of the economy. This chapter aims to explore the practical problems of adopting blockchain technology in China's digital economy and study how different cities (managed by various local governments) enhance their unique financial technology ecosystem's economic performance and promote RegTech policy in order to improve the digital economy under the central government's institutional setting. This chapter in turn analyzes the recent cases of blockchain in China's financial industry, compares the application and development of the latest financial technology related policies in major cities, and demonstrates how these regulations can promote the development of blockchain technology in the transformation of China's digital economy.

Blockchain-Based Food Supply Chain Management

2021 ◽  
pp. 134-171
Author(s):  
Dhana Srinithi Srinivasan ◽  
Karpagam Manavalan ◽  
Soundarya R. ◽  
Thamizhi S. I.
Keyword(s):  
Supply Chain ◽  
Food Supply ◽  
Third Party ◽  
Food Supply Chain ◽  
Food Supply Chains ◽  
Agriculture Sector ◽  
Blockchain Technology ◽  
Efficient Management ◽  
Potential Applications ◽  
Payment Mechanisms

Blockchain is an emerging technology that is based on the concept of distributed ledgers. It allows for pervasive transactions among different parties and eliminates the need for third-party intermediaries. Several of blockchain's characteristics make it suitable for use in the agriculture sector. Some of the potential applications of blockchain include efficient management of the food supply chain and value-based payment mechanisms. The products of agriculture are usually the inputs for a multi-actor distributed supply chain, in which case the consumer is usually the final client. The food chain involves several actors including farmers, shipping companies, distributors, and groceries. This makes the entire system to be distributed with multiple actors playing different roles throughout the chain. This currently used system is inefficient and unreliable in various aspects. This project aims to leverage blockchain technology to solve and address discrepancies involved in food supply chains.

scholarly journals Towards Quantum-Secured Permissioned Blockchain: Signature, Consensus, and Logic

Entropy ◽  
2019 ◽  
Vol 21 (9) ◽  
pp. 887 ◽  
Author(s):  
Xin Sun ◽  
Mirek Sopek ◽  
Quanlong Wang ◽  
Piotr Kulicki
Keyword(s):  
Quantum Key Distribution ◽  
Consensus Algorithm ◽  
Quantum Computers ◽  
Signature Scheme ◽  
Consensus Protocol ◽  
Safeguard Measures ◽  
Blockchain Technology ◽  
Scripting Language ◽  
Near Future ◽  
Digital Signature Scheme

While Blockchain technology is universally considered as a significant technology for the near future, some of its pillars are under a threat of another thriving technology, Quantum Computing. In this paper, we propose important safeguard measures against this threat by developing a framework of a quantum-secured, permissioned blockchain called Logicontract (LC). LC adopts a digital signature scheme based on Quantum Key Distribution (QKD) mechanisms and a vote-based consensus algorithm to achieve consensus on the blockchain. The main contribution of this paper is in the development of: (1) unconditionally secure signature scheme for LC which makes it immune to the attack of quantum computers; (2) scalable consensus protocol used by LC; (3) logic-based scripting language for the creation of smart contracts on LC; (4) quantum-resistant lottery protocol which illustrates the power and usage of LC.

scholarly journals Urban Planning Information Systems and E-Government in Al-Madinah

2016 ◽  
Vol 10 (1) ◽  
pp. 149-166
Author(s):  
Yousef A. M. Neyazi Yousef A. M. Neyazi
Keyword(s):  
Information Systems ◽  
Urban Planning ◽  
Local Governments ◽  
Electronic Systems ◽  
Local Planning ◽  
Governmental Agencies ◽  
Government Project ◽  
Developed World ◽  
Electronic Technologies ◽  
Policy Setting

. Since last two decades, information systems are widely adopted in all life aspects. In developed world, electronic systems been now shared by government’s firms and organizations using Shared- database for managing civic affaires for town, city or in some cases for country for development process worldwide. Moreover they are been adopted even in developing countries such Saudi Arabia in various local governments and Al-Madinah is one of those. These information systems are not applied for just administrative issues, but more for analytical and planning tasks. Such information systems those are used in urban planning are called 'Urban Information Systems' especially the Geographic Information Systems "GIS". This paper reviews literature of urban information systems through three levels: globally, regionally, and locally. Then how this will requires a reform of local governments and municipalities to gain form existing electronic technologies and governmental agencies and bodies, individuals, and public in integrating efforts in developments of cities. More over it explores the case of the project of Al-Madinah e-government'. At last the paper shows how GIS can be used for local planning for future projects, measures forecast, and policy setting. E-government project in Al-Madinah is the first one in Saudi, and will be applied in all over the rest cities. Urban information systems are promising huge capabilities and potentials for efficiency of urban planning in terms of: Public participation, electronic research for urban data, and supporting decision making.

scholarly journals Blockchain-Enhanced Fair and Efficient Energy Trading in Industrial Internet of Things

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Jianwen Hu ◽  
Yuling Chen ◽  
Xiaojun Ren ◽  
Yixian Yang ◽  
Xiaobin Qian ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Consensus Algorithm ◽  
Experimental Simulation ◽  
Industrial Internet Of Things ◽  
Identity Verification ◽  
Energy Trading ◽  
Blockchain Technology ◽  
Transaction Process ◽  
Industrial Internet ◽  
Trading Scheme

As the technical support of the industrial Internet of Things, blockchain technology has been widely used in energy trading, data transactions, and Internet of Vehicles. However, most of the existing energy trading models only address the transaction security and transaction privacy issues that arise in the energy trading process, ignoring the fairness of resource allocation and transaction equity in the trading process. In order to tackle those problems, an energy trading scheme called HO-TRAD is proposed in this paper to improve the efficiency of model trading while ensuring the fairness of energy trading. We propose a new trading strategy in the HO-TRAD energy trading scheme that guarantees fairness in the allocation of trading resources by introducing an entity’s active reputation value. Use smart contracts to achieve transparency and ensure fairness in the transaction process. Based on the identity verification foundation of the consortium chain, the scheme enhances the existing PBFT consensus algorithm and improves the efficiency of model transactions. The experimental simulation indicates that the scheme requires less transaction time and has higher transaction fairness and security.

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