Results 1 to 10 of about 2,789,688 (309)
Distributed Spectrum Access with Spatial Reuse [PDF]
IEEE Journal on Selected Areas in Communications, 2013 Efficient distributed spectrum sharing mechanism is crucial for improving the spectrum utilization. The spatial aspect of spectrum sharing, however, is less understood than many other aspects. In this paper, we generalize a recently proposed spatial congestion game framework to design efficient distributed spectrum access mechanisms with spatial reuse.
Xu Chen 0004, Jianwei Huang 0001
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Random Access Networks with Spatial Reuse
2022 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), 2022 Providing ultra-reliable, low-latency and massive access is a technical challenge that demands a redesign of current Media Access Control (MAC) layer in wireless cellular networks. This work focuses on studying the conventional slotted ALOHA protocol and ways to improve its efficiency with the objective of providing a solution to the massive access of ...
Adrían Agustin +2 more
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Investigating the Spatial Dimension of Food Access [PDF]
International Journal of Environmental Research and Public Health, 2017 The purpose of this article is to investigate the sensitivity of food access models to a dataset’s spatial distribution and the empirical definition of food access, which contributes to understanding the mixed findings of previous studies. Data was collected in the Dan River Region in the United States using a telephone survey for individual-level ...
Jackie Yenerall, Wen You, Jennie Hill
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Spatial Accessibility to Primary Healthcare Facilities in Iran: A GIS-Based Approach
Journal of Evidence Based Health Policy, Management & Economics, 2023 Background: Primary healthcare facilities are essential to provide healthcare to individuals and the society closer to home. Fast, timely, and affordable access to these centers is important in each society.
Elham Safi +5 more
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Access to mechanical thrombectomy and ischemic stroke mortality in Japan: a spatial ecological study
Frontiers in Neurology, 2023 BackgroundAdvances in stroke treatment have greatly improved outcomes; however, disparities in access to treatment might increase. Achieving equitable access to stroke treatment is a health policy challenge, as rapid treatment is essential for positive ...
Kazuki Ohashi +13 more
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A spatial data model for urban spatial–temporal accessibility analysis [PDF]
Journal of Geographical Systems, 2020 Time geography represents the uncertainty of the space-time position of moving objects through two basic structures, the space-time path and space-time prism, which are subject to the speed allowed in the travel environment. Thus, any attempt at a quantitative time-geographic analysis must consider the actual velocity with respect to space.
Zhang-Cai Yin +4 more
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Spatio-Temporal Analysis of Spatial Accessibility to Primary Health Care in Bhutan
ISPRS International Journal of Geo-Information, 2015 Geographic information systems (GIS) can be effectively utilized to carry out spatio-temporal analysis of spatial accessibility to primary healthcare services.
Sonam Jamtsho +2 more
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LandMediterranean cities are increasingly exposed to climate hazards, water scarcity, and social vulnerabilities, demanding integrative approaches for sustainable regeneration.
Dionysis Latinopoulos +4 more
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Diagnostics, 2019 Background: In Ghana, a blood group and rhesus type test is one of the essential recommended screening tests for women during antenatal care since blood transfusion is a key intervention for haemorrhage.
Desmond Kuupiel +4 more
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ISPRS International Journal of Geo-InformationEducational achievement plays a significant role in the labour market, benefiting individuals and society. Graduating from high school is a key step towards better employment opportunities and a prerequisite for higher education attainment. In 2023, only
Angelo Andi Petre +3 more
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