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Student retention is one of the rising problems seen in educational institutions. With the rising cost of education and issues in the education sector, such as curriculum relevance, student engagement, and rapidly changing technological…

Computers and Society · Computer Science 2025-10-21 Abrar Mahbub , Humira Saria , Md. Foysal Hossain , Nafees Mansoor

Programming has become an essential component of K-12 education and serves as a pathway for developing computational thinking skills. Given the complexity of programming and the advanced skills it requires, previous research has introduced…

Human-Computer Interaction · Computer Science 2024-12-13 Yunnong Chen , Shuhong Xiao , Yaxuan Song , Zejian Li , Lingyun Sun , Liuqing Chen

Block-based programming environments (BBPEs) such as Scratch and Code.org are now widely used in K-12 computer science classes, but they remain mostly inaccessible to blind or visually impaired (BVI) learners. A major problem is that prior…

Human-Computer Interaction · Computer Science 2026-01-16 Rubel Hassan Mollik , Vamsi Krishna Kosuri , Hans Djalali , Stephanie Ludi , Aboubakar Mountapmbeme

With the development of blockchain technology, more and more attention has been paid to the intersection of blockchain and education, and various educational evaluation systems and E-learning systems are developed based on blockchain…

Cryptography and Security · Computer Science 2023-03-09 Zhifeng Wang , Wanxuan Wu , Chunyan Zeng , Jialong Yao , Yang Yang , Hongmin Xu

Recent technologies such as inter-ledger payments, non-fungible tokens, and smart contracts are all fruited from the ongoing development of Distributed Ledger Technologies. The foreseen trend is that they will play an increasingly visible…

Cryptography and Security · Computer Science 2025-11-12 Lucian Trestioreanu , Wazen Shbair , Flaviene Scheidt de Cristo , Radu State

The predominant centralized paradigm in educational data management currently suffers from several critical issues such as vulnerability to malicious tampering, a high prevalence of diploma counterfeiting, and the onerous cost of…

Cryptography and Security · Computer Science 2023-06-02 Yihan Liu , Ke Li , Zihao Huang , Bowen Li , Guiyan Wang , Wei Cai

The popularity of blockchain technology continues to grow rapidly in both industrial and academic fields. Most studies of blockchain focus on the improvements of security, usability, or efficiency of blockchain protocols, or the…

Software Engineering · Computer Science 2018-06-20 He Jiang , Dong Liu , Zhilei Ren , Tao Zhang

As Computational Thinking (CT) continues to permeate younger age groups in K-12 education, established CT platforms such as Scratch face challenges in catering to these younger learners, particularly those in the elementary school (ages…

Human-Computer Interaction · Computer Science 2024-02-08 Liuqing Chen , Shuhong Xiao , Yunnong Chen , Ruoyu Wu , Yaxuan Song , Lingyun Sun

NFTs (Non-Fungible Tokens) are blockchain-based cryptographic tokens to represent ownership of unique content such as images, videos, or 3D objects. Despite NFTs' increasing popularity and skyrocketing trading prices, little is known about…

Computers and Society · Computer Science 2022-02-01 Tanusree Sharma , Zhixuan Zhou , Yun Huang , Yang Wang

In the past decade, blockchain has shown a promising vision greatly to build the trust without any powerful third party in a secure, decentralized and salable manner. However, due to the wide application and future development from…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-05-11 Bin Cao , Zixin Wang , Long Zhang , Daquan Feng , Mugen Peng , Lei Zhang

The most fundamental purpose of blockchain technology is to enable persistent, consistent, distributed storage of information. Increasingly common are authentication systems that leverage this property to allow users to carry their personal…

Cryptography and Security · Computer Science 2017-10-10 Daniel Augot , Hervé Chabanne , Olivier Clémot , William George

Teachers face several challenges when presenting the fundamental concepts of programming in the classroom. Several tools are introduced to give a visual dimension to support the learning process. These tools rely on code blocks, easily…

Computers and Society · Computer Science 2019-11-22 Hussein Alrubaye , Stephanie Ludi , Mohamed Wiem Mkaouer

The paper presents an innovative approach to address the challenges of scalability and reliability in Distributed Federated Learning by leveraging the integration of blockchain technology. The paper focuses on enhancing the trustworthiness…

Machine Learning · Computer Science 2025-07-11 Ajay Kumar Shrestha , Faijan Ahamad Khan , Mohammed Afaan Shaikh , Amir Jaberzadeh , Jason Geng

Federated learning (FL) is a distributed machine learning approach that protects user data privacy by training models locally on clients and aggregating them on a parameter server. While effective at preserving privacy, FL systems face…

Cryptography and Security · Computer Science 2024-10-27 Zeju Cai , Jianguo Chen , Yuting Fan , Zibin Zheng , Keqin Li

The rise of fast communication media both at the core and at the edge has resulted in unprecedented numbers of sophisticated and intelligent wireless IoT devices. Tactile Internet has enabled the interaction between humans and machines…

Computers and Society · Computer Science 2020-09-28 Ismaeel Al Ridhawi , Moayad Aloqaily , Yaser Jararweh

A trusted achievement record is a secure system that aims to record and authenticate certificates as well as key learning activities and achievements. This paper intends to gather important information on the thoughts and outlooks of…

Computers and Society · Computer Science 2020-07-07 Bakri Awaji , Ellis Solaiman , Lindsay Marshall

The primary purpose of this paper is to provide a design of a blockchain-based system, which produces a verifiable record of achievements. Such a system has a wide range of potential benefits for students, employers and higher education…

Computers and Society · Computer Science 2020-07-07 Bakri Awaji , Ellis Solaiman , Lindsay Marshall

The widespread adoption of blockchain technology has amplified the spectrum of potential threats to its integrity and security. The ongoing quest to exploit vulnerabilities emphasizes how critical it is to expand on current research…

Cryptography and Security · Computer Science 2024-04-30 Kaustubh Dwivedi , Ankit Agrawal , Ashutosh Bhatia , Kamlesh Tiwari

Technology has positive impacts on many aspects of our social life. Designing a 24hour globally connected architecture enables ease of access to a variety of resources and services. Furthermore, technology like Internet has been a fertile…

Cryptography and Security · Computer Science 2018-07-04 Freya Sheer Hardwick , Apostolos Gioulis , Raja Naeem Akram , Konstantinos Markantonakis

Federated learning (FL) enables collaborative training of machine learning models without sharing training data. Traditional FL heavily relies on a trusted centralized server. Although decentralized FL eliminates the central dependence, it…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-01-25 Zhen Qin , Xueqiang Yan , Mengchu Zhou , Shuiguang Deng