Design, development and orchestration of 5G-ready applications over sliced programmable infrastructure

5G networks design and evolution is considered as a key to support the introduction of digital technologies in economic and societal processes. Towards this direction, vertical industries' needs should be considered as drivers of 5G networks design and development with high priority. In the current manuscript, MATILDA is presented, as a holistic 5G end-to-end services operational framework tackling the overall lifecycle of design, development and orchestration of 5G-ready applications and 5G network services over programmable infrastructure, following a unified programmability model and a set of control abstractions

The importance of soil and vegetation characteristics for establishing ground-nesting bee aggregations

Most bee species are ground-nesters, yet knowledge on the nesting behaviour of this diverse group remains sparse. Evidence on the effectiveness of ground-nesting bee species as crop pollinators is growing, but there is limited information on their nesting habits and preferences and how to manage habitats to enhance populations on farms. In this study, artificially prepared plots of bare soil were constructed with the aim to attract ground-nesting bees to nest in a commercial orchard in Kent, UK. Nine soil parameters were measured to determine their preferred soil properties: hydraulic conductivity, soil compaction, soil moisture, soil temperature, soil stoniness, soil organic matter, soil root biomass, soil texture and vegetation cover. Eighteen non-parasitic ground-nesting bee species (7 Andrena, 9 Lasioglossum, 1 Halictus and 1 Colletes spp.) were recorded in the study plots. Soil stoniness and soil temperature at 10cm depth were positively correlated, and vegetation cover and hydraulic conductivity were negatively correlated with the number of ground-nesting bees on the plots. We show that artificially created habitats can be exploited for nesting by several ground-nesting bee species. This study’s findings can inform management practices to enhance ground-nesting bee populations in agricultural and urban areas

Design of a fully integrated CMOS highly temperature stable frequency reference

A new fully integrated frequency reference has been designed, fabricated and measured. The goal of the design procedure has been high stability of the frequency over temperature variations. This should be achieved using a CMOS technology without MEMS and crystals, while being restricted by a very low power budget. The frequency is designed based on an RC time constant, where both R and C are integrated on chip. The novel topology is minimizing the sources of error that affect the frequency being produced (minimum offsets and delays that spread over temperature). According to the simulations, the fabricated oscillator is a competitive one among the RC-time-constant based ones, but the measurements showed that the tradeoff between performance and integration (accompanied with power minimization) is worse than its counterparts (MEMs based or LC based all-silicon choices), or its quartz crystal based ancestor. Ways to increase the quality even further are proposed.MicroelectronicsElectrical EngineeringElectrical Engineering, Mathematics and Computer Scienc

Las restricciones de la producción tegularia en la Lex Ursonensis

RESUMEN: Sobre las cuestiones de índole semántico que plantea la primera parte del capítulo LXXVl de la Lex, que regula la producción de tejas in oppido, se efectúan aquí algunas reflexiones críticas en torno a aspectos técnicos de las instalaciones tejeras que podrían contribuir a esclarecer parte de las aparentes incongruencias filológicas, tradicionalmente detectadas en el apartado de las sanciones.Así mismo, se debate el carácter extremadamente riguroso de estas sanciones, hecho que induce a la sospecha de que el legislador fuese movido por imperativos políticos más que por razones urbanísticas, ecológicas o financieras.ABSTRACT: In this paper some critical reflexions are expressed, concerning tecnical aspectcs of tile-produccion instalations, which could contribute to elucidate partly some of the apparent philological incongruities, traditional detected in the second part of the same chapter where the sanctions are established. In the same manner, the carácter, extremely severe, of such sanctions is discussed, a fact inducing to suspect that legislator was moving from political rather than urbanistic, ecological or financial imperatives

Chaos and gene expression:A theoretical approach

Intoduction: The aim of the study was to investigate whether chaotic phenomena (chaos theory) affects the process of Gene Expression. Methods: Modeling the genes X, Y and Z-which encode a certain protein P-a set of three first order differential equations has been developed and studied in phase-space (x,y,z). Results: The elementary equilibrium points in three dimensional phase portrait analysis, include attractors, saddles and repellors. Conclusions: Attractors indicate a stable equilibrium point which attenuates the production of the protein P, while the saddles and particularly the repellors correspond to an unstable dynamic system, which promotes either the production of a P-flaw protein or totally inhibits gene expression. Among other mechanisms-e.g. patents for gene treatment (US2007000515344) and modulation(US20040014083A1)-chaotic phenomena also seem to regulate in a particular way the DNA encoding, that calls for further theoretical and experimental research(e.g. cardiovascular disease, oncology). © 2011 Bentham Science Publishers Ltd

Location and creation of nest sites for ground-nesting bees in apple orchards

Wild ground-nesting bees are key pollinators of apple (Malus domestica). We explored, (1) where they choose to nest, (2) what influences site selection and (3) species richness in orchards. Twenty-three orchards were studied over three years; twelve were treated with additional herbicide to increase bare ground with the remainder as untreated controls. Vegetation cover, soil type, soil compaction, nest number and location, and species were recorded. Fourteen species of ground-nesting solitary/eusocial bee were identified. Most nests were in areas free of vegetation and areas treated with additional herbicide were utilised by ground nesting bees within three years of application. Nests were also evenly distributed along the vegetation-free strips underneath the apple trees. This area was an important ground-nesting bee habitat with mean numbers of nests at peak nest activity of 873 per ha (range 44–5705), and 1153 per ha (range 0–4082) in 2018 and 2019, respectively. Increasing and maintaining areas of bare ground in apple orchards during peak nesting events could improve nesting opportunities for some species of ground-nesting bee and, combined with flowers strips, be part of a more sustainable pollinator management approach. The area under the tree row is an important contributor to the ground-nesting bee habitat and should be kept bare during peak nesting

Geometry or poetry? Issues of methods and techniques in regional research

Method, Quantitative and qualitative methods, Pluralism, Practical reason, Culture, Local communities, Development,