scholarly journals Bot Datasets on Twitter: Analysis and Challenges

2021 ◽  
Vol 11 (9) ◽  
pp. 4105
Author(s):  
Luis Daniel Samper-Escalante ◽  
Octavio Loyola-González ◽  
Raúl Monroy ◽  
Miguel Angel Medina-Pérez
Keyword(s):  
Information Exchange ◽  
Modern Society ◽  
Online News ◽  
Social Networking Service ◽  
Public And Private ◽  
Challenges And Opportunities ◽  
Twitter Analysis ◽  
Radar Chart ◽  
New Challenges ◽  
Bot Detection

The reach and influence of social networks over modern society and its functioning have created new challenges and opportunities to prevent the misuse or tampering of such powerful tools of social interaction. Twitter, a social networking service that specializes in online news and information exchange involving billions of users world-wide, has been infested by bots for several years. In this paper, we analyze both public and private databases from the literature of bot detection on Twitter. We summarize their advantages, disadvantages, and differences, recommending which is more suitable to work with depending on the necessities of the researcher. From this analysis, we present five distinct behaviors in automated accounts exhibited across all the bot datasets analyzed from these databases. We measure their level of presence in each dataset using a radar chart for visual comparison. Finally, we identify four challenges that researchers of bot detection on Twitter have to face when using these databases from the literature.

scholarly journals Security of Blockchain-Based Supply Chain Management Systems: Challenges and Opportunities

2021 ◽  
Vol 11 (12) ◽  
pp. 5585
Author(s):  
Sana Al-Farsi ◽  
Muhammad Mazhar Rathore ◽  
Spiros Bakiras
Keyword(s):  
Supply Chain ◽  
Supply Chain Management ◽  
Information Exchange ◽  
Cyber Attacks ◽  
Management Systems ◽  
Chain Management ◽  
Counter Measures ◽  
Starting Point ◽  
Challenges And Opportunities ◽  
Unique Approach

Blockchain is a revolutionary technology that is being used in many applications, including supply chain management. Although, the primary motive of using a blockchain for supply chain management is to reduce the overall production cost while providing the comprehensive security to the system. However, current blockchain-based supply-chain management (BC-SCM) systems still hold the possibility of cyber attacks. Therefore, the goal of this study is to investigate practical threats and vulnerabilities in the design of BC-SCM systems. As a starting point, we first establish key requirements for the reliability and security of supply chain management systems, i.e., transparency, privacy and traceability, and then discern a threat model that includes two distinctive but practical threats including computational (i.e., the ones that threaten the functionality of the application) and communication (i.e., the ones that threaten information exchange among interconnected services of the application). For investigation, we follow a unique approach based on the hypothesis that reliability is pre-requisite of security and identify the threats considering (i) design of smart contracts and associated supply chain management applications, (ii) underlying blockchain execution environment and (iii) trust between all interconnected supply management services. Moreover, we consider both academic and industry solutions to identify the threats. We identify several challenges that hinder to establish reliability and security of the BC-SCM systems. Importantly, we also highlight research gaps that can help to establish desired security of the BC-SCM. To the best of our knowledge, this paper is the first effort that identifies practical threats to blockchain-based supply chain management systems and provides their counter measures. Finally, this work establishes foundation for future investigation towards practical security of BC-SCM system.

scholarly journals Public and private sectors collective response to combat COVID-19 in Malaysia

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Ching Siang Tan ◽  
Saim Lokman ◽  
Yao Rao ◽  
Szu Hua Kok ◽  
Long Chiau Ming
Keyword(s):  
Insurance Coverage ◽  
Healthcare Providers ◽  
Screening Tests ◽  
Public Healthcare ◽  
Private Hospitals ◽  
Public And Private ◽  
The Public ◽  
Private Healthcare ◽  
Care Services ◽  
Challenges And Opportunities

AbstractOver the last year, the dangerous severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread rapidly around the world. Malaysia has not been excluded from this COVID-19 pandemic. The resurgence of COVID-19 cases has overwhelmed the public healthcare system and overloaded the healthcare resources. Ministry of Health (MOH) Malaysia has adopted an Emergency Ordinance (EO) to instruct private hospitals to receive both COVID-19 and non-COVID-19 patients to reduce the strain on public facilities. The treatment of COVID-19 patients at private hospitals could help to boost the bed and critical care occupancy. However, with the absence of insurance coverage because COVID-19 is categorised as pandemic-related diseases, there are some challenges and opportunities posed by the treatment fees management. Another major issue in the collaboration between public and private hospitals is the willingness of private medical consultants to participate in the management of COVID-19 patients, because medical consultants in private hospitals in Malaysia are not hospital employees, but what are termed “private contractors” who provide patient care services to the hospitals. Other collaborative measures with private healthcare providers, e.g. tele-conferencing by private medical clinics to monitor COVID-19 patients and the rollout of national vaccination programme. The public and private healthcare partnership must be enhanced, and continue to find effective ways to collaborate further to combat the pandemic. The MOH, private healthcare sectors and insurance providers need to have a synergistic COVID-19 treatment plans to ensure public as well as insurance policy holders have equal opportunities for COVID-19 screening tests, vaccinations and treatment.

Research on mixed learning mode based on MOOCs and micro class in internet background

2021 ◽  
pp. 1-8
Author(s):  
Zhang Zhehua
Keyword(s):  
Learning Process ◽  
Mixed Mode ◽  
Teaching And Learning ◽  
The Internet ◽  
Teaching Mode ◽  
Quality Of Teaching ◽  
Challenges And Opportunities ◽  
New Challenges ◽  
New Form

In the era of education information and globalization, a new mode of teaching and micro class has emerged in the background of the Internet, which brings new challenges and opportunities to the teaching of the classroom. MOOCs has been piloted and applied in many universities in the form of SPOC. As a new form of curriculum, micro course has been applied to the teaching and learning process. The integration of Moor and micro class resources helps to turn the classroom into a mixed mode. This article will focus on this hot topic to analyse the characteristics of the class, the characteristics of the micro class and the influence on the students and teachers, to improve the quality of teaching and to realize the individualized and active study of the students. The article summarizes the results of blended teaching mode at home and abroad, and explores the development and application of MOOC and micro class resources.

Looking forward: New challenges and opportunities

2012 ◽  
Vol 2012 (138) ◽  
pp. 91-103 ◽  
Author(s):  
Elizabeth J. Bushnell
Keyword(s):  
Challenges And Opportunities ◽  
New Challenges

Nanomaterials—State of Art, New Challenges, and Opportunities

2019 ◽  
pp. 1-24 ◽  
Author(s):  
Deepu A. Gopakumar ◽  
Avinash R. Pai ◽  
Daniel Pasquini ◽  
Leu Shao-Yuan (Ben) ◽  
Abdul Khalil H.P.S. ◽  
...  
Keyword(s):  
Challenges And Opportunities ◽  
New Challenges ◽  
State Of Art
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