Search results for "long term"
showing 10 items of 203 documents
Impact of LTE’s Periodic Interference on Heterogeneous Wi-Fi Transmissions
2018
The problem of Wi-Fi and LTE coexistence has been significantly debated in the last years, with the emergence of LTE extensions enabling the utilization of unlicensed spectrum for carrier aggregation. Rather than focusing on the problem of resource sharing between the two technologies, in this paper, we study the effects of LTE's structured transmissions on the Wi-Fi random access protocol. We show how the scheduling of periodic LTE transmissions modifies the behavior of 802.11's distributed coordination function (DCF), leading to a degradation of Wi-Fi performance, both in terms of channel utilization efficiency and in terms of channel access fairness. We also discuss the applicability and…
Network dynamics of eukaryotic LTR retroelements beyond phylogenetic trees
2009
Abstract Background Sequencing projects have allowed diverse retroviruses and LTR retrotransposons from different eukaryotic organisms to be characterized. It is known that retroviruses and other retro-transcribing viruses evolve from LTR retrotransposons and that this whole system clusters into five families: Ty3/Gypsy, Retroviridae, Ty1/Copia, Bel/Pao and Caulimoviridae. Phylogenetic analyses usually show that these split into multiple distinct lineages but what is yet to be understood is how deep evolution occurred in this system. Results We combined phylogenetic and graph analyses to investigate the history of LTR retroelements both as a tree and as a network. We used 268 non-redundant …
AGING IN EUROPE AND GERIATRIC CARE
2017
Europeans are living longer than ever, and this pattern is expected to continue. The increased life expectancy is a remarkable achievement, which however poses obvious challenges for health care and geriatric assistance. There is a progressive increase of older persons living alone and in need of assistance. European countries are handling these challenges with very different approaches. There are countries and regional differences in social policies and sanitary assistance, in providers of care, in quality of the assistance and in lodging costs. The long term care models are also very different (cash benefits, public provision of care services, or hybrid rather than pure models of care). T…
Living with Long Term Conditions from the Perspective of Family Caregivers. A Scoping Review and Narrative Synthesis
2021
(1) Background: When living with one or more long term conditions (LTCs), both the patient and the family experience the impact of the condition at different levels. The family’s needs and perceptions should be considered in the process of caring for people with LTCs. The aim of this review is to understand “the process of living with LTCs” from a family perspective. (2) Methods: A scoping review and narrative synthesis were conducted using a systematic methodology in MEDLINE, CINAHL, Web of Science and PsycINFO, in English and Spanish, including evidence from 2018. (3) Results: A total of 28 articles were included in the review. Acceptance, coping, self-management, integration, and adjustm…
Physical activity and dementia : Long-term follow-up study of adult twins
2015
Introduction. Physical activity is associated with a decreased occurrence of dementia. In twins, we investigated the effect of persistent physical activity in adulthood on mortality due to dementia. Materials and methods. Physical activity was queried in 1975 and 1981 from the members of the older Finnish Twin Cohort (n = 2 1,791), who were aged 24-60 years at the end of 1981. The subjects were divided into three categories according to the persistence of their vigorous physical activity. Dementia deaths were followed up to the end of 2011. Results. During the 29-year follow-up, 353 subjects died of dementia. In individual-based analyses the age-and sex-adjusted hazard ratio (HR) was 0.65 (…
Lebensqualität nach operativer Therapie des renalen Hyperparathyreoidismus. Ergebnisse einer prospektiven Langzeitstudie / Quality of Life After Oper…
2001
In einer prospektiven Langzeituntersuchung wurde die Lebensqualitat nach operativer Therapie des renalen Hyperparathyreoidismus untersucht. Vom 1.8.1987-31.8.2000 erfolgten 186 Eingriffe. Bevorzugte Operation war die totale Parathyreoidektomie mit autologer Epithelkorperchenreplantation. Die Erfolgsrate der erstmaligen Halsexploration betrug 98,2%. Juckreiz klang bei uber 60% der betroffenen Patienten innerhalb von 4 Wochen nach dem Eingriff ab. Die Ruckbildung ossarer Symptome bedurfte langerer Zeit. Ein Jahr postoperativ waren 75% der praoperativ von Juckreiz und 79% der vom ossaren Syndrom betroffenen Patienten asymptomatisch. Patienteneigene Risikofaktoren bedingen eine niedrige Letalit…
Ergebnisse der chirurgischen Therapie von Pankreaspseudozysten
1991
Pankreaspseudozysten werden zunehmend haufiger beobachtet. Zwischen dem 1. 1. 1978 und 31. 12. 1987 wurden an der Chirurgischen Klinik der Johannes Gutenberg-Universitat Mainz 145 Patienten wegen Pankreaspseudozysten operiert. In 93 Fallen erfolgte eine innere Zystendrainage, die mit einer Komplikationsrate von 11,8% und mit einer Letalitat von 1,1% belastet war. Nach resezierenden Verfahren stieg die Letalitat auf 4,7% und nach auserer Drainage auf 6,5% an. Nach einer mittleren Beobachtungszeit von 7,3 Jahren zeigte sich, das die nichtresezierenden Verfahren einen gunstigeren Einflus auf die endokrine Funktion und die resezierenden Verfahren auf die Schmerzfreiheit hatten. Zystenrezidive e…
Physical activity of adolescents with long term illnesses or disabilities in reference to ICF personal factors
2016
Participation and activities are important for adolescents’ functioning and health. This is in line with the World Health Organisation’s International Classification of Functioning, Disability and Health (ICF). Main areas of functioning include physical activities (PA) and participation in organised sport clubs. To ensure adolescents with long term illnesses or disabilities (LTID) can participate fully in society, functional abilities interact with contextual environmental and personal factors. Because habits and attitudes of adolescents can carry through to adulthood, it is important to assess the personal factors in relation to activities and participation. Therefore, the aims of this stu…
Extracranial metastasizing solitary fibrous tumors (SFT) of meninges: Histopathological features of a case with long-term follow-up
2012
Extrapleural solitary fibrous tumors are uncommon mesenchymal neoplasms frequently observed in middle-aged adults and are classified, according to the WHO classification of soft tissue tumors, as part of the hemangiopericytoma tumor group. However, these two entities remain separated in the WHO classification of tumors of the central nervous system. In fact, meningeal solitary fibrous tumors are believed to be benign lesion and only in a minority of cases local relapses have been described, although detailed survival clinical studies on solitary fibrous tumors of meninges are rare. In contrast to hemangiopericytoma, which frequently shows distant extracranial metastases, such an event is ex…
Effect of plot size on measured soil loss for two Italian experimental sites
2011
The objective of this investigation was to determine empirically the plot width and length effects on runoff volume, Ve, soil loss, Ae, and sediment concentration, Ce, by using data collected, at the temporal scale of the erosive event, on bare plots differing in width (2 to 8 m) and length (11 to 22 m) for two Italian stations (Masse, Umbria; Sparacia, Sicily). Mean results differed by a maximum factor of 1.6 for Ve, 1.8 for Ae and 1.2 for Ce when plots differing in width were compared and by a maximum factor of 1.4 for Ve, 1.2 for Ae and 1.3 for Ce when comparison between plot lengths was conducted. Differences between two plot widths or two plot lengths were not statistically significant…