Search results for "Reservation"

Using Agent-Based Modelling in Studying Labour–Education Market System

2015

We’re now ready for a discussion on how exactly one could build an agent-based model of labour–education market system (LEMS). This discussion will necessarily be quite abstract, because particular mechanisms built into the model (agents, their behaviour, interactions, other structures) depend heavily on the purpose of the model. I’ll focus on general approaches and mechanisms that you may find useful when building agent-based models of LEMS.

Quel "mezzo pollice" di materia

2012

Il capitolo contiene una riflessione sul ruolo delle superfici architettoniche nei monumenti e nei contesti antichi. Nel tentativo di tracciare l'evoluzione del concetto di restauro fino all'indirizzo attuale, il contributo richiama, tra gli altri, il pensiero di John Ruskin e Alois Riegl, che hanno evidenziato il valore di autenticità e rimarcato il ruolo delle superfici nella percezione dell'architettura storica, contestando i restauri distruttivi in corso in molte città (come il restauro della Basilica di San Marco a Venezia). This chapter includes a reflection on the role of architectural surfaces in monuments and ancient contexts. In attempt to trace the evolution of the concept of res…

A Migration Path for the Internet: From Best-Effort to a QoS Capable Infrastructure by Means of Localized Admission Control

2000

Looking back at many proposals appeared on the scene in these years, a fundamental lesson to be learned is that their success or failure is strictly tied to their backward compatibility with existing infrastructures. In this paper, we consider the problem of providing explicit admission control decisions for QoS aware services. We rely the decision to admit a new flow upon the successful and timely delivery, through the Internet, of probe packets independently generated by the end points. Our solution, called GRIP (Gauge&Gate Realistic Internet Protocol), is fully distributed and scalable, as admission control decisions are taken at the edge network nodes, and no coordination between router…

Automatische Anästhesieprotokollsysteme

1997

The introduction of electronic anaesthesia documentation systems was attempted as early as in 1979, although their efficient application has become reality only in the past few years. The advantages of the electronic protocol are apparent: Continuous high quality documentation, comparability of data due to the availability of a data bank, reduction in the workload of the anaesthetist and availability of additional data. Disadvantages of the electronic protocol have also been discussed in the literature. By going through the process of entering data on the course of the anaesthetic procedure on the protocol sheet, the information is mentally absorbed and evaluated by the anaesthetist. This i…

Setting up of a protocol of environmental research for preservation and right exploitation of the cultural heritage

2007

The research aims at collecting information on the state of preservation of the cultural heritage in Palermo, and deals more precisely with Vittorio Emanuele avenue, itself bounded by two city gates called Porta Felice (northern gate facing the Mediterranean sea) and Porta Nuova (southern gate) that both give access to the historic centre of the city. Another important purpose is the assessment of livability level, be it for workers, residents, cultural operators, or else visitors, with a particular interest in traffic noise. The research has been conducted by means of miscellaneous scientific duties; however we shall only refer here to two types of practice : the monitoring of environmenta…

MICROBIOLOGICAL QUALITY OF SOUS VIDE COOK-CHILL PRESERVED FOOD AT DIFFERENT SHELF LIFE

2010

The effect of three different periods of storage life (0, 15 and 30 days) on the microbiological quality of several foods elaborated with the sous vide cook–chill procedure in a restaurant was studied. These foods are grouped in three categories: meat (breast chicken, foie gras, pork loin and entrecote of veal), fish (codfish, gilt head sea bream, hake and salmon) and vegetable (broccoli, courgette, potato and carrot). Total plate counts in the products studied were in the range of <1.00–3.74 log10 cfu/g. Coagulase negative staphylococci were isolated in the three categories, Enterococcus spp. were isolated from foie gras and Pantoea agglomerans from salmon and carrot. Staphylococcus aureus…

Call Admission Control in Single and Two-Tier Cellular Networks

2010

We consider four strategies for call admission control (CAC) in single and two-tier cellular networks, which are designed to ensure advantage of handover calls: dynamic redundancy (cutoff priority scheme), partial dynamic redundancy (fractional guard channel scheme), static redundancy (rigid division-based CAC scheme) and restriction of the number of new calls admitted (new call bounding scheme). We show the advantage of dynamic reservation by numerical analysis. We strictly prove it in the case of two-channel system with losses.

No Reservations Required: Achieving Fairness between Wi-Fi and NR-U with Self-Deferral Only

2021

Wireless technologies coexisting in unlicensed bands should receive a fair share of the available channel resources, even when they use different access methods. We consider the problem of coexistence between Wi-Fi and New Radio Unlicensed (NR-U) nodes, which employ, respectively, a random and scheduled access scheme. The latter typically resorts to reservation signals (RSs), which allow keeping the control of the channel until the start of the next synchronized slot. This mechanism, although effective for increasing the channel access opportunities of scheduled-based nodes, is also a waste of channel resources. We investigate alternative solutions, based on self-deferral only. We built ana…

Preliminary Results on Carrizo Citrange Synthetic Seeds Dessiccation and PVS2-Vitrification as Pre-Treatments To Cryopreservation

2011

Simple techniques suitable for long-term storage of Plasmopara viticola

2006

Summary. Propagules of Plasmopara viticola or fragments of P. viticola infected host tissue were stored by three techniques, freezing at –25°C, dehydration with CaCl2, and freeze-drying. Viability tests were performed periodically until exhaustion of the testing sample. P. viticola samples that were frozen at -25°C remained viable for eight years, whereas the CaCl2 dehydrated samples remained viable for eight and a half years. Freeze-drying was the most successful long-term storage method, being able to preserve samples for almost 21 years.