482 research outputs found

    Moves - Spaces - Places

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    In the complex and multi-layered process of migration and identity-building, classical migration theories and approaches of transnationalism seem no longer able to grasp how belonging and home are to be found in movement. This ethnography leads the reader into the lives of five Jamaican women in Montreal; their daily practices and experiences, their spaces of communion, their memories and projections for the future. Lisa Johnson sheds light on the mobile biographies and migratory agency of her interlocutors by following the intricate mental and physical trajectories of their deep-rooted yearning to return home

    Modelling, Dimensioning and Optimization of 5G Communication Networks, Resources and Services

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    This reprint aims to collect state-of-the-art research contributions that address challenges in the emerging 5G networks design, dimensioning and optimization. Designing, dimensioning and optimization of communication networks resources and services have been an inseparable part of telecom network development. The latter must convey a large volume of traffic, providing service to traffic streams with highly differentiated requirements in terms of bit-rate and service time, required quality of service and quality of experience parameters. Such a communication infrastructure presents many important challenges, such as the study of necessary multi-layer cooperation, new protocols, performance evaluation of different network parts, low layer network design, network management and security issues, and new technologies in general, which will be discussed in this book

    (R1975) MAP/PH(1), PH(2)/2 Queue with Multiple Vacation, Optional Service, Consultations and Interruptions

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    Two types of services are explored in this paper: regular server and main server, both of which provide both regular and optional services. Customers arrive using the Markovian Arrival Process (MAP), and service time is allocated based on phase type. The regular server uses the main server as a resource. Customers’ service at the primary server is disrupted as a result. When the queue size is empty, the main server can take several vacations. This system has been represented as a QBD Process that investigates steady state with the use of matrix analytic techniques, employing finite-dimensional block matrices. Our model’s waiting time distribution has been examined in more detail during the busy times. The system’s key parameters are assessed, and a few graphs and numerical representations are constructed

    Masks, Misinformation, and Making Do: Appalachian Health-Care Workers and the COVID-19 Pandemic

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    The firsthand pandemic experiences of rural health-care providers—who were already burdened when COVID-19 hit—raise questions about the future of public health and health-care delivery. This volume comprises the COVID-19 pandemic experiences of Appalachian health-care workers, including frontline providers, administrators, and educators. The combined narrative reveals how governmental and corporate policies exacerbated the region’s injustices, stymied response efforts, and increased the death toll. Beginning with an overview of the SARS-CoV-2 virus and its impact on the body, the essays in the book’s first section provide background material and contextualize the subsequent explosion of telemedicine, the pandemic’s impact on medical education, and its relationship to systemic racism and related disparities in mental health treatment. First-person narratives from diverse perspectives recount the pandemic’s layered stresses. These visceral, personal experiences of how Appalachian health-care workers responded to the pandemic amid the nation’s deeply polarized political discourse will shape the historical record of this “unprecedented time” and provide a glimpse into the future of rural medicine. Contributors: Lucas Aidukaitis, Clay Anderson, Tammy Bannister, Alli Delp, Lynn Elliott, Monika Holbein, Laura Hungerford, Nikki King, Brittany Landore, Jeffrey J. LeBoeuf, Sojourner Nightingale, Beth O’Connor, Rakesh Patel, Mildred E. Perreault, Melanie B. Richards, Tara Smith, Kathy Osborne Still, Darla Timbo, Kathy Hsu Wibberlyhttps://ohioopen.library.ohio.edu/oupress/1022/thumbnail.jp

    Homeland Fascism

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    "It can't happen here." This has been the prevailing sentiment about the possible emergence of fascism in the United States since the rise of international fascism in the 1930s. Yet there are signs that it may already be happening, and at the highest levels of government... In their copiously researched and documented work the Schwendingers outline the structural transformations, policies, and practices that raise the prospect of fascist governance in the 21st Century US. They show that a homeland fascism has significant supports within the framework of American liberal democracy. This is an important analysis in a context in which concerns about fascist demagoguery and far right mobilization appear to be growing in the US and beyond

    Acta Universitatis Sapientiae - Mathematica 2022

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    (R1984) Analysis of M^[X1], M^[X2]/G1, G_2^(a,b)/1 Queue with Priority Services, Server Breakdown, Repair, Modified Bernoulli Vacation, Immediate Feedback

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    In this investigation, the steady state analysis of two individualistic batch arrival queues with immediate feedback, modified Bernoulli vacation and server breakdown are introduced. Two different categories of customers like priority and ordinary are to be considered. This model propose nonpreemptive priority discipline. Ordinary and priority customers arrive as per Poisson processes. The server consistently afford single service for priority customers and the general bulk service for the ordinary customers and the service follows general distribution. The ordinary customers to be served only if the batch size should be greater than or equal to a , else the server should not start service until a customers have accumulated. Meanwhile priority queue is empty; the server becomes idle or go for vacation. If server gets breakdown while the priority customers are being served, they may wait in the head of the queue and get fresh service after repair completion, but in case of ordinary customers they may leave the system. After completion of each priority service, customer may rejoin the system as a feedback customer for receiving regular service because of inappropriate quality of service. Supplementary variable technique and probability generating function are generally used to solve the Laplace transforms of time-dependent probabilities of system states. Finally, some performance measures are evaluated and express the numerical results

    (R1881) Impatient Customers in Queueing System with Optional Vacation Policies and Power Saving Mode

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    In this manuscript, a queueing system with two optional vacation policies, power-saving mode under reneging and retention of reneged customers in both vacations is analyzed. If the server is free, it chooses either of the vacations, classical vacation or working vacation. During vacations, the customers may get impatient due to delays and may leave the system, but they are retained in the system with some convincing mechanisms. On vacation completion, if the system is empty, the server is turned off to facilitate better utilization of the resources. Some of the operating system characteristics are derived using the probability generating functions technique. The numerical results are graphically represented by using MATLAB software
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