Search results for "RAV"
showing 10 items of 5866 documents
Getting by the resort of the pilgrims
2014
New Coronavirus (SARS-CoV-2) Crossing Borders Beyond Cities, Nations, and Continents: Impact of International Travel
2021
The third outbreak of coronavirus in the form of the COVID-19 infection started in Wuhan, China, in December 2019. The early and rapid spread of this infection across borders can be largely attributed to international air travel that has become a part of modern globalization. In this article, we analyze the spread of the novel coronavirus (SARS-CoV-2) along the routes of international travel, both by air and by sea. Pitfalls of various screening methods used at the airports and the importance of optimal aircraft ventilation are discussed. Also, we suggest measures that can be taken to reduce the risk of transmission associated with air travel.
Meanings of travel in the musical discourse of blues: Roosevelt “Grey Ghost” Williams and “Lonesome Traveller”
2016
El objetivo de este artículo es investigar, desde una perspectiva comunicativa, socio-semiótica y etnomusicológica, la construcción de sentido sobre el viaje y el estilo de vida itinerante (hobo) en el discurso musical del blues. Primero realizaremos una contextualización histórica del viaje en la tradición afroamericana, y después analizaremos el caso del legendario músico texano Roosevelt «Grey Ghost» Williams (1903-1996) y de su composición «Lonesome Traveller» («viajero solitario»), en la que se representa el sujeto y estilo de vida hobo (trabajador migrante y sin hogar). En ese proceso, discutiremos el sentido del viaje como imposición y el sentido del viaje como signo de independencia…
Travel‐associated infectious skin diseases
2020
S. haematobium as a Common Cause of Genital Morbidity in Girls: A Cross-sectional Study of Children in South Africa
2013
Background Schistosoma (S.) haematobium infection is a common cause of genital morbidity in adult women. Ova in the genital mucosal lining may cause lesions, bleeding, pain, discharge, and the damaged surfaces may pose a risk for HIV. In a heterogeneous schistosomiasis endemic area in South Africa, we sought to investigate if young girls had genital symptoms and if this was associated with urinary S. haematobium. Methodology In a cross-sectional study of 18 randomly chosen primary schools, we included 1057 schoolgirls between the age of 10 and 12 years. We interviewed assenting girls, whose parents had consented to their participation and examined three urines from each of them for schistos…
Introduzione. Traveling Geographies. Idee, tradizioni e approcci geografici fra mobilità e resistenze
2023
Nel suo saggio del 1982 “Traveling theory”, Edward Said propone di rileggere la produzione dei saperi come il prodotto mai stabile di un intreccio di movimenti che attraversano tempi, spazi e discipline. Le teorie viaggiano e nel corso dei loro itinerari si trasformano, adattandosi di volta in volta ai contesti sociali, politici e culturali che incontrano nel loro procedere. Tuttavia, come ogni esperienza di mobilità insegna, le geografie teoriche non sono fatte solo di passaggi, ma anche di confini e sbarramenti che possono interferire con la circolazione di voci e idee. Il sapere geografico non fa naturalmente eccezione, rivelando il peso che dialoghi e incontri hanno avuto nel susseguirs…
A branch-price-and-cut algorithm for the capacitated multiple vehicle traveling purchaser problem with unitary demand
2021
Abstract The multiple vehicle traveling purchaser problem (MVTPP) consists of simultaneously selecting suppliers and routing a fleet of homogeneous vehicles to purchase different products at the selected suppliers so that all product demands are fulfilled and traveling and purchasing costs are minimized. We consider variants of the MVTPP in which the capacity of the vehicles can become binding and the demand for each product is one unit. Corresponding solution algorithms from the literature are either branch-and-cut or branch-and-price algorithms, where in the latter case the route-generation subproblem is solved on an expanded graph by applying standard dynamic-programming techniques. Our …
Efficient GRASP+VND and GRASP+VNS metaheuristics for the traveling repairman problem
2011
Abstract: The traveling repairman problem is a customer-centric routing problem, in which the total waiting time of the customers is minimized, rather than the total travel time of a vehicle. To date, research on this problem has focused on exact algorithms and approximation methods. This paper presents the first metaheuristic approach for the traveling repairman problem.
Magnetically excited breather modes in an overlap-geometry Josephson tunnel junction
2022
A scheme for the controlled generation of single traveling sine- Gordon breathers in a long Josephson junction is described. In the presence of dissipation, a direct current source, and thermal fluctuations, the theoretical analysis shows that, through the nonlinear supratransmission effect, tailored magnetic pulses at the junction’s edge can effectively yield breather modes only.
Corrigendum to “Smooth and non-smooth traveling wave solutions of some generalized Camassa–Holm equations” [19 (6) (2014) 1746–1769]
2015
Corrigendum Corrigendum to ‘‘Smooth and non-smooth traveling wave solutions of some generalized Camassa–Holm equations’’ [19 (6) (2014) 1746–1769] M. Russo , S. Roy Choudhury , T. Rehman , G. Gambino b University of Central Florida, Department of Mathematics, 4000 Central Florida Blvd., Orlando, USA University of Palermo, Department of Mathematics and Computer Science, Via Archirafi 34, 90123 Palermo, Italy