Enabling RAN Slicing Through Carrier Aggregation in mmWave Cellular Networks

The ever increasing number of connected devices and of new and heterogeneous mobile use cases implies that 5G cellular systems will face demanding technical challenges. For example, Ultra-Reliable Low-Latency Communication (URLLC) and enhanced Mobile Broadband (eMBB) scenarios present orthogonal Quality of Service (QoS) requirements that 5G aims to satisfy with a unified Radio Access Network (RAN) design. Network slicing and mmWave communications have been identified as possible enablers for 5G. They provide, respectively, the necessary scalability and flexibility to adapt the network to each specific use case environment, and low latency and multi-gigabit-per-second wireless links, which tap into a vast, currently unused portion of the spectrum. The optimization and integration of these technologies is still an open research challenge, which requires innovations at different layers of the protocol stack. This paper proposes to combine them in a RAN slicing framework for mmWaves, based on carrier aggregation. Notably, we introduce MilliSlice, a cross-carrier scheduling policy that exploits the diversity of the carriers and maximizes their utilization, thus simultaneously guaranteeing high throughput for the eMBB slices and low latency and high reliability for the URLLC flows.Comment: 8 pages, 8 figures. Proc. of the 18th Mediterranean Communication and Computer Networking Conference (MedComNet 2020), Arona, Italy, 202

Linguistic Conventions or Open-Ended Reasoning: Some Questions for Una Stojnić

This short paper has the character of a critical notice of Una Stojnić’s book Context and Coherence: The Logic and Grammar of Prominence (Stojnić 2021). It is mainly concerned with Stojnić’s strong claim that linguistic phenomena related to prominence and coherence, in particular the interpretation of pronouns, are governed by linguistic conventions and are not pragmatic in nature. On these matters, my views are opposite to Stojnić’s

Proprietà di equipartizione asintotica e sue applicazioni nella teoria dell'informazione

In questo elaborato vedremo uno dei risultati fondamentali nella teoria dell'informazione: la proprietà di equipartizione asintotica. Grazie a questo risultato vedremo come realizzare un sistema di compressione dati senza perdita di informazione. Sarà inoltre possibile dimostrare il teorema sulla codifica di canale, che permette di identificare esattamente quanta informazione è possibile trasferire attraverso un particolare canale affetto da rumore senza avere perditaope

Retrospective analysis of geriatric major trauma patients admitted in the shock room of a Swiss academic hospital : characteristics and prognosis

L'espérance de vie accrue expose un grand nombre de personnes âgées à des accidents graves, augmentant ainsi le nombre de cas de traumatismes majeurs en gériatrie. Le but de notre étude est de déterminer le profil des patients âgés subissant un traumatisme majeur et les facteurs contributifs prédisant la mortalité dans ce groupe de patients spécifique, par rapport à la population plus jeune. Une analyse rétrospective de 1051 patients avec un traumatisme majeur admis sur dix ans dans un centre de traumatologie de niveau 1 a été réalisée. Les données recueillies sont les suivantes: histoire, nature et type de traumatisme; l'âge et le sexe; signes vitaux à l'admission; Score de gravité des blessures; indice de choc; comorbidités; diathèse de coagulation; schémas des blessures; mesures d'urgence prises; diagnostic principal; mortalité et la durée du séjour à l'hôpital et en unité de soins intensifs. Les patients gériatriques admis pour un traumatisme majeur ont un taux de mortalité presque quatre fois plus élevé (47%) que leurs homologues plus jeunes (14%) avec le même ISS (index severity score). Selon l'analyse de régression statistique, la thérapie anti-plaquettaire (OR 3.21), le score NACA (National Advisory Committee for Aeronautics) (OR 2.23), le GCS (OR 0.83), l'ISS (OR 1.07) et l'âge (OR 1.06) sont les principaux facteurs prédictifs de mortalité. -- Increased life expectancy exposes a great number of elderly people to serious accidents, thus increasing the amount of major geriatric trauma cases. The aim of our study was to determine the profile of elderly patients undergoing major trauma, and the contributing factors predicting mortality in this specific patient group, compared to the younger population. Retrospective analysis of 1051 patients with major trauma admitted over ten years in a Level-1 trauma œnter was performed. Data collected were: history, nature and type of trauma; age and sex; vital signs on admission; injury severity score; shock index; comorbidities; coagulation diathesis; injury patterns; emergency measures taken; main diagnosis; mortality; and length of hospital and intensive care unit (ICU) stay. Ceriatric patients admitted for major trauma have a mortality rate almost four times greater (47%) than their younger counterparts (14%) with the same ISS. According to statistical regression analysis, anti-platelet therapy (OR 3.21), NACA (National Advisory Committee for Aeronautics) score (OR 2.23), ces (OR 0.83), ISS (OR 1.07) and age (OR 1.06) are the main factors predicting mortality. Conclusion: Ceriatric major trauma patients admitted to our trauma resuscitation area have a high mortality rate. Age, CCS, ISS and NACA scores as well as anti-platelet therapy are the main factors predicting mortality

Sox2-Dependent 3D Chromatin Interactomes in Transcription, Neural Stem Cell Proliferation and Neurodevelopmental Diseases.

In our article, we asked whether Sox2, a transcription factor important in brain development and disease, is involved in gene regulation through its action on long-range interactions between promoters and distant enhancers. Our findings highlight that Sox2 shapes a genome-wide network of promoter-enhancer interactions, acting by direct binding to these elements. Sox2 loss affects the three-dimensional (3D) genome and decreases the activity of a subset of genes involved in Sox2-bound interactions. At least one of such downregulated genes, Socs3, is critical for long-term neural stem cell maintenance. These results point to the possibility of identifying a transcriptional network downstream to Sox2, and involved in neural stem cell maintenance. In addition, interacting Sox2-bound enhancers are often connected to genes which are relevant, in man, to neurodevelopmental disease; this may facilitate the detection of functionally relevant mutations in regulatory elements in man, contributing to neural disease

Retrospective Analysis of Geriatric Major Trauma Patients Admitted in the Shock Room of a Swiss Academic Hospital: Characteristics and Prognosis

Increased life expectancy exposes a great number of elderly people to serious accidents, thus increasing the amount of major geriatric trauma cases. The aim of our study was to determine the profile of elderly patients undergoing major trauma, and the contributing factors predicting mortality in this specific patient group, compared to the younger population. Retrospective analysis of 1051 patients with major trauma admitted over ten years in a Level-1 trauma center was performed. Data collected were: history, nature and type of trauma; age and sex; vital signs on admission; injury severity score; shock index; comorbidities; coagulation diathesis; injury patterns; emergency measures taken; main diagnosis; mortality; and length of hospital and intensive care unit (ICU) stay. Geriatric patients admitted for major trauma have a mortality rate almost four times greater (47%) than their younger counterparts (14%) with the same ISS. According to statistical regression analysis, anti-platelet therapy (OR 3.21), NACA (National Advisory Committee for Aeronautics) score (OR 2.23), GCS (OR 0.83), ISS (OR 1.07) and age (OR 1.06) are the main factors predicting mortality. Conclusion: Geriatric major trauma patients admitted to our trauma resuscitation area have a high mortality rate. Age, GCS, ISS and NACA scores as well as anti-platelet therapy are the main factors predicting mortality

Minimizing Energy Consumption for 5G NR Beam Management for RedCap Devices

In 5G New Radio (NR), beam management entails periodic and continuous transmission and reception of control signals in the form of synchronization signal blocks (SSBs), used to perform initial access and/or channel estimation. However, this procedure demands continuous energy consumption, which is particularly challenging to handle for low-cost, low-complexity, and battery-constrained devices, such as RedCap devices to support mid-market Internet of Things (IoT) use cases. In this context, this work aims at reducing the energy consumption during beam management for RedCap devices, while ensuring that the desired Quality of Service (QoS) requirements are met. To do so, we formalize an optimization problem in an Indoor Factory (InF) scenario to select the best beam management parameters, including the beam update periodicity and the beamwidth, to minimize energy consumption based on users' distribution and their speed. The analysis yields the regions of feasibility, i.e., the upper limit(s) on the beam management parameters for RedCap devices, that we use to provide design guidelines accordingly