Search

Abstract Handwritten signatures in biometric authentication leverage unique individual characteristics for identification, offering high specificity through dynamic and static properties. However, this modality faces significant challenges from sophisticated forgery attempts, underscoring the need for enhanced security measures in common applications. To address forgery in signature-based biometric systems, integrating a forgery-resistant modality, namely, noninvasive electroencephalography (EEG), which captures unique brain activity patterns, can significantly enhance system robustness by leveraging multimodality’s strengths. By combining EEG, a physiological modality, with handwritten signatures, a behavioral modality, our approach capitalizes on the strengths of both, significantly fortifying the robustness of biometric systems through this multimodal integration. In addition, EEG’s resistance to replication offers a high-security level, making it a robust addition to user identification and verification. This study presents a new multimodal SignEEG v1.0 dataset based on EEG and hand-drawn signatures from 70 subjects. EEG signals and hand-drawn signatures have been collected with Emotiv Insight and Wacom One sensors, respectively. The multimodal data consists of three paradigms based on mental, & motor imagery, and physical execution: i) thinking of the signature’s image, (ii) drawing the signature mentally, and (iii) drawing a signature physically. Extensive experiments have been conducted to establish a baseline with machine learning classifiers. The results demonstrate that multimodality in biometric systems significantly enhances robustness, achieving high reliability even with limited sample sizes. We release the raw, pre-processed data and easy-to-follow implementation details.

Facebook Live has become a means of teaching and learning in many parts of the world. This paper, thus, reports an examination of teaching English through Facebook Live and students' experiences of learning on it in the COVID-19 pandemic. It as participatory action research employed observation of self-managed Facebook Live streaming, and an online semi-structured interview with students and parents. The intervention of Facebook Live consisted of three strategies: pre-recorded video streaming, live teaching and a combination of both. This paper reports on how students in absence of a physical classroom learned English through Facebook Live, developed communicative skills and gained ICT skills. Although the teacher's lessons on Facebook Live were appreciated by students and parents as students could get ideas for speaking English, students expressed concerns if they could interact with the teacher and friends. Facebook Live associated with videoconferencing tools, however, can complement physical classroom learning in crises and normal situations.

Background Early detection of free flap compromise is critical for salvage of the flap. Various methods of free flap monitoring have been described, but clinical assessment is the standard method for among all. In this study, role of infrared thermography is evaluated for free flap monitoring.

Silver nanoparticles are becoming increasingly popular because of their potential applications in bioengineering and medical diagnostics. Nanoparticles possess distinctive features, including increased surface-to-volume ratio and superior magnetic properties, which render them well-suited for a range of biological uses. They have a multi-functionalization, high surface plasmon resonance, large surface area, stable nature, and easy processing. However, silver nanoparticles have exciting potential for biomedical applications, including biomaterials, detection and diagnosis platforms, formulations, drug delivery, and medical device coatings. This typical review provides a comprehensive overview of the current research on silver nanoparticles in biomedical applications, highlighting different methods for creating nanoparticles, exploring their antimicrobial properties in various medical fields, and examining their prospective biological uses.

Background: Article 5.3 of the World Health Organization Framework Convention on Tobacco Control (FCTC) outlines a roadmap for the parties to safeguard public health policies in compliance with the national law from the influence of commercial and other vested interests of the tobacco industry. Aim: The study was conducted with the aim to identify gaps and bring existing Indian policies in compliance with Article 5.3 of FCTC. Materials and Methods: A nationwide cross-sectional opinion poll involving respondents aged >18 years (n = 164) and a panel discussion (n = 31) were conducted. Results: The majority of stakeholders expressed (strongly agree = 65% and agree = 22.6%) the need for a nationwide policy to regulate interactions between public officials and the tobacco industry. About 56.7% felt the need to expand existing protocols and codes of conduct for public officials across India. Over 84% of the participants supported incorporating specific sections to implement Article 5.3 into the Cigarettes and Other Tobacco Products Act Amendment Bill 2020. The majority of participants supported the need for guidelines for medical bodies and prohibiting tobacco companies from participating in corporate social responsibility activities. Conclusion: The Government of India should comprehensively adopt Article 5.3, in all states and union territories, adopting a whole-of-government approach in partnership with the community and civil society under the “whole-of-society” approach for effective tobacco control measures.