Accès ouvert
2026
article
OpenAlex
Jamal Chu, K.H. Benjamin Leung, Audrey L. Blewer, R. Darrell Nelson et autres
BACKGROUND: Early defibrillation for out-of-hospital cardiac arrest (OHCA) improves survival, but timely automated external defibrillator (AED) access remains challenging especially in rural areas. We conducted a computational modelling study to estimate how existing urban-rural differences in AED arrival would change for a …
ca, us
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Accès ouvert
2026
article
OpenAlex
Yih Yng Ng, Chi Keong Ching, Chiun How Teng, Yu-Chun Chien et autres
sg, jp, ph, gb, us
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Accès ouvert
2026
article
OpenAlex
Chanodom Piankusol, Nutcha Charoenboon, Natthanaphop Isaradech, Borwon Wittayachamnankul et autres
BACKGROUND: Out-of-hospital cardiac arrest (OHCA) is a leading cause of mortality in Thailand, yet national response to the issue remains fragmented and under-prioritized. There is no centralized OHCA registry, neurological outcome data are almost entirely absent, and coordination between EMS and hospitals …
us, th
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Accès ouvert
2022
article
OpenAlex
Francis Joseph Vasko, Yun Lu, Bryan McNally
The Cable-Trench Problem (CTP) is defined as a combination of the Shortest Path and Minimum Spanning Tree Problems. Specifically, let G = (V , E) be a connected weighted graph with specified vertex v1 ∈ V (referred to as the root), length …
us
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Accès ouvert
2021
article
OpenAlex
Yun Lu, Bryan McNally, Emre Shively‐Ertas, Francis Joseph Vasko
The 0-1 Multidimensional Knapsack Problem (MKP) is a NP-Hard problem that has important applications in business and industry. Approximate solution approaches for the MKP in the literature typically provide no guarantee on how close generated solutions are to the optimum. This article …
us
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Accès ouvert
2021
article
OpenAlex
Francis Joseph Vasko, Anthony Dellinger, Yun Lu, Bryan McNally et autres
The generalized assignment problem (GAP) is a NP-hard problem that has a large and varied number of important applications in business and industry. Approximate solution approaches for the GAP do not require excessive computation time, but typically there are no guarantees on …
us
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Accès ouvert
2021
article
OpenAlex
Francis Joseph Vasko, Anthony Dellinger, Yun Lu, Bryan McNally et autres
The generalized assignment problem (GAP) is a NP-hard problem that has a large and varied number of important applications in business and industry. Approximate solution approaches for the GAP do not require excessive computation time, but typically there are no guarantees on …
us
(code pays fourni par la source)
Accès ouvert
2021
article
OpenAlex
Bryan McNally, Yun Lu, Emre Shively‐Ertas, Myung Soon Song et autres
As generalizations of the classic set covering problem (SCP), both the set K-covering problem (SKCP) and the set variable (K varies by constraint) K-covering problem (SVKCP) are easily shown to be NP-hard. Solution approaches in the literature for the SKCP typically provide …