239 research outputs found

    Evolution of Orchestration Towards 5G

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    Service orchestration is an essential activity in 5G networks. It performs optimal resource allocation and provisions services in an effective sequence based on demands across a collection of physical or virtual network functions (P/VNF). This paper summarizes several orchestration environments and components along with their evolution towards 5G. A brief operational comparison of platforms such as Open Source Management and Orchestration (OSM MANO), Open Platform for NFV (OPNFV) and Open Network Automation Platform (ONAP) have been presented, along with different deployment models and architectural alternatives

    Synthetic Cannabinoids (SCs) in metaphors: A metaphorical analysis of user experiences of synthetic cannabinoids in two countries.

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    New psychoactive substances (NPS) remain a global public health and clinical challenge. Popular NPS include synthetic cannabinoids (SCs). A conceptual metaphorical analysis of user experiences of SCs was conducted in two European countries (Western and Central European). Metaphors are increasingly used to better understand drug user experiences and as medium to inform and guide clinical responses. Semi-structured interviews with 12 SC users were conducted in Hungary (n = 6) and Ireland (n = 6). Thematically segmented texts of SC usage (1) motivation, (2) effects, (3) consequences and (4) the setting were selected. A systematic analysis of conceptual metaphors was conducted on the selected texts. The conceptual target and source domains of the experiences of SC usage (motivation, effects, consequences) were analysed. Four conceptual source domains were found in all of the segmented and analysed narratives of psychological factors (motivations, effects, consequences): change in the vertical perception, perceiving that SC is everywhere, feeling disconnected, recognition of lack of control and identifying the SC as a destroying entity. The conceptual metaphors reflect how users perceive experiences of SC use, the discrepancy between the experience of embodiment and disembodiment. This study provides clinicians with an insight into the experiences of SC motivations, effects and consequences and can be used to inform and guide clinical and therapeutic responses in the support of those recovering from SC dependence

    Usefulness of electroanatomical mapping during transseptal endocardial left ventricular lead implantation

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    AimFailure rate to implant left ventricular (LV) lead transvenously is 4-8% in cardiac resynchronization therapy (CRT) patients. Epicardial lead placement is an alternative method and if not applicable case reports and small series showed the feasibility of endocardial LV lead implantation. Electroanatomical mapping might be a useful tool to guide this procedure.Methods and resultsFour patients had undergone endocardial LV lead implantation after unsuccessful transvenous implantation or epicardial LV lead dysfunction using the transseptal approach. Electroanatomical mapping was used to mark the location of the transseptal puncture. This location point guided the mapping catheter from the subclavian access and facilitated positioning of the LV lead at the adjacent latest activation area of the left ventricle detected by activation mapping. Endocardial active fixation LV leads were successfully implanted in all patients with stable electrical parameters immediately after implantation and over a mean follow-up of 18.3 months (lead impedance 520 +/- 177 vs. 439 +/- 119 Omega and pacing threshold 0.8 +/- 0.2 V, 0.5 ms vs. 0.6 +/- 0.1 V, 0.5 ms, respectively). Patients were maintained on anticoagulation therapy with a target international normalized ratio of 3.5-4.5 and did not show any thromboembolic, haemorrhagic events, or infection. Echocardiography showed significant improvement of LV systolic function with marked improvement of the functional status.ConclusionsElectroanatomical mapping is a useful technical tool to guide endocardial LV lead implantation. It helps to identify the location of the transseptal puncture and the use of activation mapping might facilitate location of the optimal lead positions during CRT
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