Search results for "servi"
showing 10 items of 4470 documents
Overview of Telecom Operator Software Market
2009
Telecommunications is an essential enabler of modern societies and a global vertical industry, providing communication and information services, with its annual revenue of over trillion euros. In this book, a company providing these services is referred to as a telecom operator or communications service provider (CSP). CSPs create value by offering connectivity to and via an infrastructure of networks for transferring signals. The core business processes in a telecom operator company therefore revolve, on one hand, around physical networks and their maintenance, and on the other, managing their customers and their use of the connectivity services over the networks.
Endpoint Admission Control over Assured Forwarding PHBs and Its Performance over RED Implementations
2001
The Assured Forwarding Per Hop Behavior (AF PHB) has been devised by the IETF Differentiated Services (DiffServ) working group to provide drop level differentiation. The intent of AF is to support services with different loss requirements, but with no strict delay and jitter guarantees. Another suggested use of AF is to provide differentiated support for traffic conforming to an edge conditioning/policing scheme with respect to nonconforming traffic. Scope of this paper is twofold. First, we show that, quite surprisingly, a standard AF PHB class is semantically capable of supporting per flow admission control. This is obtained by adopting the AF PHB as core routers forwarding mechanism in c…
PCP: An End-to end Measurement Based Call Admission Control for Real-Time Services Over IP Networks
2000
Distributed end-to-end measurement based connection admission control mechanisms have been recently proposed. The goal of these schemes is to provide tight QoScon trol on a per connection basis by means of measurements taken by the edge nodes and priority based forwarding procedure at internal nodes. Since the additional flows handling procedures are implemented at the border routers and the forwarding mechanisms are for flows aggregates only, the approach is fully scalable and compatible with the IETF Differentiated Service proposal. The aim of this paper is to propose specific schemes and to investigate the advantages and limits of the approach by analyzing the basic mechanisms and evalua…
Does abdominal obesity influence immunological response to SARS-CoV-2 infection?
2021
Several hundred studies, 40 systematic reviews, and nearly 20 meta-analyses had been published by early 2021, confirming an increased need for medical services for people living with overweight or ...
COVID-19, an opportunity for developing countries?
2020
The COVID-19 outbreak was declared by the World Health Organization (WHO) as global pandemic in March 2020. Considering the necessity to implement rapid response to control the pandemic and the fragility and the state of need of low income countries, it will be mandatory to develop a global approach in order to reduce the spread of infection and the creation of community viral reservoirs. So far, we could hypothesize a worst case scenario in which when the COVID-19 outbreak hits a peak in Africa and in low-income countries, the majority of such countries will be unprepared, with low resources allocated for affording the viral emergency and the consequences will be catastrophic with no lesso…
Discussion of “Optimal Debt Service: Straight vs. Convertible Debt”
2006
Corporate bond default plays a signifi cant role in today's business environment. According to Moody's, a leading provider of credit ratings, corporate bond issuers that it rated as of January 1, 2004, defaulted on a total of US $16 billion in 2004. Credit default not only affects the equity investors of a firm, but also the debt holders, who may loose part of their credit. Default can also have dramatic consequences for a firm's future operations. Therefore, the decision of if and when to default is important for both the firm and its stakeholders. There is a substantial body of literature on the determination of optimal default points as a strategic decision by the owners of a firm. Accor…
A constrained genetic algorithm to optimize a maintenance global service
2014
It is herein developed an approach to optimize the maintenance services policy related to a Global Service Contract. In particular, the latter requires the performing of corrective maintenance and replacements of the failed components on a set of equal vehicles of a logistic Company. The tackled problem concerns the determination of an effective opportunistic maintenance policyon the basis of which when a fault occurs, it is replaced the failed component and, depending on the age of the others components, also replacements of others suitable components are performed, even if they are not yet broken, thus saving a substantial amount of system downtime. The problem is mathematically formulate…
KNOWLEDGE AND VIEWPOINTS ON THE EFFECTS OF CORRUPTION ON HEALTHCARE: A SURVEY CONDUCTED AMONG STUDENTS OF PALERMO UNIVERSITY MEDICAL SCHOOL, ITALY
2018
Corruption affects healthcare effectiveness and efficiency and limits equity in access to health services. Aim of the survey was to document knowledge and viewpoints on the impact of corruption on healthcare system in a sample of students attending pre-lauream healthcare professional courses at Palermo University Medical school and to evaluate any improvement in their awareness on this topic after a dedicated multidisciplinary educational intervention. An anonymous questionnaire was administered to students before and after the intervention. Absolute and relative frequency of correct and incorrect answers was computed. Chi-squared test was used to compare answers given before and after the …
KNOWLEDGE AND VIEWPOINTS ON THE EFFECTS OF CORRUPTION ON HEALTHCARE: A SURVEY CONDUCTED AMONG STUDENTS OF PALERMO UNIVERSITY MEDICAL SCHOOL, ITALY.
2018
Corruption affects healthcare effectiveness and efficiency and limits equity in access to health services. Aim of the survey was to document knowledge and viewpoints on the impact of corruption on healthcare system in a sample of students attending pre-lauream healthcare professional courses at Palermo University Medical school and to evaluate any improvement in their awareness on this topic after a dedicated multidisciplinary educational intervention. An anonymous questionnaire was administered to students before and after the intervention. Absolute and relative frequency of correct and incorrect answers was computed. Chi-squared test was used to compare answers given before and after the …
Reproducible research practices, openness and transparency in health economic evaluations: study protocol for a cross-sectional comparative analysis
2020
INTRODUCTION: There has been a growing awareness of the need for rigorously and transparent reported health research, to ensure the reproducibility of studies by future researchers. Health economic evaluations, the comparative analysis of alternative interventions in terms of their costs and consequences, have been promoted as an important tool to inform decision-making. The objective of this study will be to investigate the extent to which articles of economic evaluations of healthcare interventions indexed in MEDLINE incorporate research practices that promote transparency, openness and reproducibility. METHODS AND ANALYSIS: This is the study protocol for a cross-sectional comparative ana…