This study measures growth of Internet connectivity in Africa from 2010 to 2014 with a focus on inter-country relationships. An initial analysis reveals a modest increase in the number of participating countries but an explosive increase in the number of routers and network links. We then form the first country level topology maps of the African Internet and evaluate the robustness of the network. We study raw connectivity, pairwise shortest paths, and betweeness centrality, suggesting how improvements can be made to the inter-country African connectivity to enhance its robustness without reliance on paths traversing multiple continents.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11561833 | PMC |
| http://dx.doi.org/10.1007/978-3-319-43696-8_8 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Statistical-based detection of pilot contamination attack for NOMA in 5G networks.
Sci Rep
January 2025
Department of Information Technology, Faculty of Computers and Information, Assiut University, Assiut, Assiut, 71515, Egypt.
Fifth-generation (5G) communication technologies, such as millimeter wave communication, massive multiple-input-multiple-output and non-orthogonal-multiple-access (NOMA) are playing a pivotal role in promoting the modern applications of the Internet-of-Things. Using non-orthogonal resource allocation, NOMA can increase spectrum efficiency and achieve wide connectivity with low transmission delay and signaling cost. Despite the high potential of NOMA in 5G communications, NOMA is susceptible to a pilot contamination attack (PCA), in which an attacker resents the same pilot signals as authorized users.
View Article and Find Full Text PDFRisk quantification based Adaptive Cruise control and its application in approaching behavior at signalized intersections.
Accid Anal Prev
January 2025
School of Transportation, Southeast University, Nanjing, Jiangsu Province 211189, PR China; Institute on Internet of Mobility, Southeast University and University of Wisconsin-Madison, Southeast University, Nanjing, Jiangsu Province 211189, PR China.
Traffic signals, while reducing conflicts within intersections, often lead to stop-and-go behaviors in approaching vehicles, negatively impacting traffic flow in terms of safety, efficiency, and fuel consumption. Aimed at minimizing the traffic oscillations caused by traffic signals through Connected and Autonomous Vehicles (CAVs) and meeting real-time operational needs, this paper proposes a Risk-Based Adaptive Cruise Control (RACC). RACC designs the constraints of approaching a signalized intersection as expected risks, enabling compliance with all constraints while being adaptable to basic road scenarios.
View Article and Find Full Text PDFDevelopment and implementation of an electronic health record system for use in humanitarian emergencies, disaster response, and conflict zones.
PLOS Glob Public Health
January 2025
Center for Global Health, Massachusetts General Hospital, Boston, Massachusetts, United States of America.
Humanitarian medical response to natural and human-made disasters can be complicated by high clinician, staff, and patient turnover. While electronic medical records are being scaled up globally, their use remains limited in humanitarian response settings. The Fast Electronic Medical Record (fEMR) system is an open-source electronic health record system specifically designed for use in resource-limited settings and humanitarian crises.
View Article and Find Full Text PDF"Everything cannot be handled virtually": Understanding intention and use of digital health technologies among rural adults and rural cancer survivors.
J Rural Health
January 2025
Department of Health Disparities Research, Division of Cancer Prevention and Population Sciences, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
Purpose: This qualitative study assessed internet access and use, barriers and facilitators to participating in digital health interventions or programs, and the engagement experience in virtual versus in-person health interventions among rural adults and rural cancer survivors.
Methods: Rural adults (n = 10) and rural cancer survivors (n = 10) were recruited from previous studies to participate in an in-depth interview. The interview guide contained eight open-ended questions related to participation in technology-based programs.
Optimizing DSSCs Performance for Indoor Lighting: Matching Organic Dyes Absorption and Indoor Lamps Emission Profiles to Maximize Efficiency.
ChemistryOpen
January 2025
Department of Materials Science, Solar Energy Research Center MIB-SOLAR and INSTM Milano-Bicocca Research Unit University of Milano-Bicocca,Via Cozzi 55, Milano, I-20125, Italy.
The rapid proliferation of internet-connected devices has transformed our daily habits prompting a shift towards greater sustainability in renewable energy for indoor applications. Among the various technologies available for obtaining energy in indoor conditions, Dye-Sensitized Solar Cells (DSSCs) stand out as the most promising due to their ability to efficiently convert ambient light into usable electricity. This study explores how the optimal matching of the UV-Vis absorption spectra of dyes commonly used in DSSCs with the emission profiles of indoor lamps allows for the enhanced efficiency of DSSC under indoor lighting.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!