Embedding of national cryptographic algorithm in Hyperledger Fabric by Qi CAO, Shuhua RUAN, Xingshu CHEN, Xiao LAN, Hongxia ZHANG, Hongjian JIN

“…Hyperledger Fabric is an extensible alliance blockchain platform and provides support for enterprise-level commercial blockchain projects.The cryptographic algorithm is the core technologies of the platform, ensuring the security and non-tampering of the data on the chain.But the original Fabric platform lacks the national cryptographic algorithm support.The embedding and support of the national cryptographic algorithm of the Fabric platform was designed and implemented.Firstly, the interaction logic of between components and the invocation scenario of each type of cryptographic algorithm in the Fabric platform were analyzed, an idea of embedding national cryptographic algorithm support for the platform was proposed.Secondly, the modules and interfaces for SM2, SM3 and SM4 were added to BCCSP of the Fabric platform based on the open source code of national cryptographic algorithm implementation.Thirdly, the interface of cryptographic algorithm invoked by the upper layer of each component is associated to the interface of corresponding national cryptographic algorithms, which realized the invocation support of national cryptographic algorithm for the upper layer applications.Finally, the correctness and effectiveness of the embedded national cryptographic algorithm were verified by creating a fabric-gm test instance.And compared with the performances of the test instance built by the mirror of the native Fabric platform.The experimental results show that the embedded national cryptographic algorithm interfaces are corrected and the generated national cryptographic certificates are effective.Moreover, compared with the native Fabric platform, the network start up time increases by about 3%.In the millisecond unit, the transaction time cost increases by about one time, the dynamic certificate generation time increases by about 9%, and all the performance are within the acceptable range.…”
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Euro-Atlantic Security in U.S.-EURussia Triangle and Trump Factor by M. M. Panyuzheva

“…The EU remains the main economic partner of the Russian Federation. 3) Trump's “transactional” approach has prompted Europeans to strengthen its defense identity and seek a compromise with Russia. 4) In a multipolar world, the Euro-Atlantic regional security is no longer closed to transatlantic ties. …”
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Replacing the "Urban Sublime": The City in Contemporary American Fiction by Heinz Ickstadt

“…Elle pourrait être considérée, de manière concrète, comme l’environnement où s’inscrit l’expérience d’un quartier spécifique ou comme un lieu de transaction transculturelle (en particulier dans les romans récents consacrés aux communautés ethniques) mais aussi, de manière abstraite, comme le signe visible de forces invisibles qui simultanément transcendent et absorbent la ville dans des romans où semble se perpétuer la tradition moderniste du sublime urbain. …”
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Formation of the Concept of “Administrative Act” in the European Administrative-Legal Doctrine by V. V. Maslov

“…Hauriou as an expression of the will of the administration in order to cause legal consequences served as the basis for the application (with some adaptation) civil law developments regarding legal transactions (invalidity of administrative acts, conditional administrative acts, etc.) to administrative act. …”
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The Role of Diasporas in the Current World Politics by I. D. Loshkariov

“…The elite presents “the controlling centre” that forges a strategy of action and makes transactions of resources. Stability within “the controlling centre” can be named as an indicator of diaspora’s ability to manage the potential available.…”
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A Systematic Review of the Coopetition Relationship between Bike-Sharing and Public Transit by Jianhong Ye, Jiahao Bai, WenYang Hao

“…Three research themes were identified: macrolevel studies on bike-sharing and public transit interaction, studies on actual coopetition behaviors based on bike-sharing user surveys, and studies on potential coopetition relationships based on bike-sharing transaction data. The three categories of studies reveal the effect of bike-sharing usage on public transit ridership, the emergency function of bike-sharing in the event of unexpected transit shutdowns, and the substitution and connection relationships between bike-sharing and public transit and the factors influencing them. …”
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State-of-the-art survey of smart contract verification based on formal methods by Wenbo ZHANG, Simin CHEN, Lifei WEI, Wei SONG, Dongmei HUANG

“…Smart contract represents an essential application scenario of blockchain technology.Smart contract technology improves programmability and scalability of blockchain, and has broad development prospects.However, a series of security incidents caused a great number of economic losses and weakened users’ confidence in the Ethereum platform.The security of smart contract has become a critical problem that restricts the further development of smart contract.Defects in smart contract code may cause serious consequences and cannot be modified once deployed, it is especially important to verify the correctness of smart contract in advance.In recent years, researchers have obtained many achievements in verification of smart contract, but there is a lack of systematic summary of these research results.Therefore, some basic principles of Ethereum were introduced, including the transaction, gas mechanism, storage and programming language.Eight common types of vulnerabilities in smart contract were summarized and their causes were explained.Some real security events were reviewed and some examples of vulnerability codes were presented.Then, the research work on automatic verification of smart contract based on symbolic execution, model checking and theorem proving was classified and summarized.Three open-source automated tools were selected, including Mythril, Slither and Oyente.And experiments were implemented to evaluate and compare the three tools from the aspects of efficiency, accuracy and the types of vulnerability can be detected.Furthermore, related review articles were surveyed, and the advantages of this paper compared with these works were summarized.The critical problems in the vulnerability detection technology of smart contract were also summarized and the direction of future research was proposed at last.…”
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Metaverse crimes in virtual (Un)reality: Fraud and sexual offences under English law by Andreas Karapatakis

“…As this virtual space became intertwined with financial transactions, especially through cryptocurrencies, the Metaverse evolved into a medium for perpetrating scams. …”
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ACCESSING FINANCE FOR INNOVATIVE EU SMES – KEY DRIVERS AND CHALLENGES by Laura Vasilescu

“…The limited market power, lack of management skills, absence of adequate accounting records and insufficient assets, transaction costs and lack of collateral, all tend to increase the risk profile of SMEs. …”
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The effect of service quality and customer satisfaction on the flip app customer loyalty in Indonesia by Galang Pramudika Sukandar, Mochamad Yudha Febrianta

“…The increase in digital banking transactions in Indonesia has spawned various innovations in the field of financial technology, one of which is the digital payment application Flip.id. …”
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The quality of licensing services: an analysis of the impact of leadership and communication on the effectiveness of licensing services in Indonesia by Rachmat Rachmat

“…The establishment of the Public Service Mall in XYZ Regency is designed to facilitate business transactions and is anticipated to enhance the Ease of Doing Business Index (EoDB) in XYZ Regency. …”
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Analyzing customer churn behavior using datamining approach: hybrid support vector machine and logistic regression in retail chain by Mohammad Barzegar, Aliakbar Hasani

“…Also, the results show that age, marital status, and average monthly income from the set of demographic features and how to get to know the store, the share of online shopping, and special sales from the set of features related to customer transaction records are among the most important factors affecting customer churn. …”
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The Study of Verbal Impoliteness in the Users’ Comments of Sahamyab Stock Market Website According to Culpeper’s Theory by Shahram Naghshbandi, Hossein Razavian, Hossein Ariyaeefar

“…This study was carried out on some of the most challenging stock market symbols having the biggest number of transactions on Sahamyab website. In this research, by analyzing about 3,600 comments equivalent to about 100,000 words, these questions were answered about how and to what extent Culpeper impoliteness models (1996, 2011) were used in the tweets of Sahamyab website users. …”
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Service Quality Analysis of BPR XYZ by Ulfa Chusnia Wahyunita, Dwi Sukma Donoriyanto

“…However, there are still 9 attributes below customer expectations, including the comfort of the waiting room, sufficient parking area, ease of transactions, reliability in resolving customer issues, waiting time, service speed, responsiveness to customer complaints, politeness in service, and the overall impression given to customers by the service provided. …”
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A Blockchain-Based Trustworthy Access Control Scheme for Medical Data Sharing by Canling Wang, Wei Wu, Fulong Chen, Hong Shu, Ji Zhang, Yuxuan Zhang, Taochun Wang, Dong Xie, Chuanxin Zhao

“…In addition, the authorization transaction between users and institutions is recorded on the blockchain for patient traceability and accountability. …”
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ARTIFICIAL INTELLIGENCE IN BUSINESS OPERATIONS: EXPLORING PRODUCTIVITY AND ACCEPTANCE by Ioana CIOFU, Giulia KONDORT, Stefana POP, Roxana CIOC

“…In contrast, older respondents exhibited lower levels of trust and acceptance, particularly in contexts requiring precision, such as financial transactions. The results suggest that while AI is perceived as highly effective in repetitive and data-intensive tasks, its limitations in adaptability and emotional intelligence remain a concern. …”
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Factors Influences Customer Loyalty for Online Shopping: Study Case on Xiaomi's Online Store Customer in Bekasi by Franky Anggreiawan, Rhian Indradewa

“…Design/methodology/approach: A quantitative research approach was employed using Structural Equation Modeling (SEM) to analyze data collected from 105 respondents in Bekasi City who have made at least two transactions through Xiaomi's e-commerce platform. Respondents were selected through simple random sampling, and data were analyzed using SPSS 25 and SmartPLS software. …”
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Potential application areas and benefits of blockchain-enabled smart contracts adoption in infrastructure Public-private partnership (PPP) projects by Emmanuel Chidiebere Eze, Ernest Effah Ameyaw

“…The leading benefits of BSC adoption in PPP are (1) decentralisation of payments and other transactions, (2) enhancing supply chain visibility and integration, (3) the autonomy in contract administration, (4) prevent misapplication of contractual provisions, and (5) enhances alternative dispute resolution (ADR). …”
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The The Influence of Perceived Convenience and Service Quality on Customer Loyalty (A Study at the Brilink Agent Bio Energy 2 Sidoarjo) by Devi Putri Pratama, Budi Prabowo

“…BRILink not only provides operational efficiency benefits but also makes it easier for BRI customers and non-BRI customers to make transactions with BRI. This research examines how perceptions of comfort and service quality influence customer loyalty through customer satisfaction as an intervening variable (study at the Brilink Bio Energi 2 Sidoarjo agent). …”
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Optimization of the Naive Bayes Algorithm with SMOTETomek Combination for Imbalance Class Fraud Detection by Arief Tri Arsanto, Arif Faizin, Moch lutfi, Zulfatun Nikmatus Saadah

“…Dataset analysis needs to be carried out to analyze the history of transactions that have been carried out. In the fraud detection dataset, it can be seen that there are attributes that cause data imbalance. …”
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