Search results for "FCC"

New physics in $B$ meson mixing: future sensitivity and limitations

2020

The mixing of neutral mesons is sensitive to some of the highest scales probed in laboratory experiments. In light of the planned LHCb Upgrade II, a possible upgrade of Belle II, and the broad interest in flavor physics in the tera-Z phase of the proposed FCC-ee program, we study constraints on new physics contributions to Bd and Bs mixings which can be obtained in these benchmark scenarios. We explore the limitations of this program, and identify the measurement of |Vcb| as one of the key ingredients in which progress beyond current expectations is necessary to maximize future sensitivity. We speculate on possible solutions to this bottleneck. Given the current tension with the standard mo…

Challenges in EU External Climate Change Policy-Making in the Early Post-Lisbon Era: The UNFCCC Copenhagen Negotiations

2011

The 15th United Nations Framework Convention on Climate Change (UNFCCC) Conference of the Parties (COP) meeting held in Copenhagen from 7 to 18 December 2009, which took place one week after the entry into force of the Treaty of Lisbon on 1 December 2009, has brought about rather disappointing outcomes from the perspective of the European Union (EU), which had previously displayed substantial leadership within the UN climate regime. Contrary to the EU’s objectives for the COP15 meeting, no legally binding agreement was reached to succeed the Kyoto Protocol after 2012 and the final Copenhagen Accord contained disappointingly few ambitious targets. This chapter tries to explain how this resul…

Low-Power Audio Keyword Spotting using Tsetlin Machines

2021

The emergence of Artificial Intelligence (AI) driven Keyword Spotting (KWS) technologies has revolutionized human to machine interaction. Yet, the challenge of end-to-end energy efficiency, memory footprint and system complexity of current Neural Network (NN) powered AI-KWS pipelines has remained ever present. This paper evaluates KWS utilizing a learning automata powered machine learning algorithm called the Tsetlin Machine (TM). Through significant reduction in parameter requirements and choosing logic over arithmetic based processing, the TM offers new opportunities for low-power KWS while maintaining high learning efficacy. In this paper we explore a TM based keyword spotting (KWS) pipe…

Steam catalytic cracking of naphtha over ZSM-5 zeolite for production of propene and ethene: Micro and macroscopic implications of the presence of st…

2012

One option to produce more ethene and propene can be to crack naphtha type fractions in dedicated smaller FCC units. We present here the results obtained for high temperature steam catalytic cracking (SCC) of a representative naphtha product (n-heptane) with ZSM-5. It has been found that under those conditions the presence of steam produces an irreversible dealumination of the zeolite as well as a reversible deactivation due to the interaction of water with active sites with a negative effect on protolytic cracking. A kinetic decay model that takes into account the two phenomena has been developed. The apparent activation energy is lower in the presence of steam. It appears that whilst the …

No nos callarán

2004

The EU’s Role in International Climate Change Policy-Making: A Global Leader in Decline?

2013

This chapter assesses the European Union’s (EU) role in international climate change policy-making by comparing the EU’s degree of goal attainment at the United Nations Framework Convention on Climate Change (UNFCCC) Conference of the Parties (COP) negotiations in Copenhagen in 2009 and Cancun in 2010. By making use of three analytical factors (coherence, the opportunity structure and politicisation) we assess the outcomes of both negotiations for the EU. The Durban negotiations of 2011 are touched upon in the conclusions.

Island Diffusion on Metal fcc (100) Surfaces

1999

We present Monte Carlo simulations for the size and temperature dependence of the diffusion coefficient of adatom islands on the Cu(100) surface. We show that the scaling exponent for the size dependence is not a constant but a decreasing function of the island size and approaches unity for very large islands. This is due to a crossover from periphery dominated mass transport to a regime where vacancies diffuse inside the island. The effective scaling exponents are in good agreement with theory and experiments.

Cambiamenti climatici e diritti umani. Il paradigma della Giustizia climatica e il ruolo delle climate litigations per la protezione dei diritti uman…

2021

In che misura i sempre più diffusi, pervasivi e drammatici impatti dei cambiamenti climatici, che interessano con geometrie variabili tutte le latitudini e longitudini del globo, mettono a rischio la tenuta del sistema dei diritti umani universalmente riconosciuti? La ricerca si pone l'obiettivo di rispondere a tale quesito ragionando su quali sfide essi pongano e su quali siano, nell'attuale panorama, gli strumenti giuridici utili a garantire la piena tutela dei diritti fondamentali nel nuovo contesto clima- alterato. La fondatezza e l’attendibilità delle ricerche scientifiche che avvalorano l’esistenza del cambiamento climatico antropogenico si pongono come presupposto fattuale dell'inter…

Crossing the boundary between fcc and hcp: the structure of nanosized cobalt is unraveled by a model of size distribution, shape and stacking faults …

2014

The properties of nanostructured cobalt in the fields of magnetic, catalytic and biomaterials depend critically on Co close-packing. In this paper we report a structural analysis of nanosized cobalt based on the whole XRD pattern simulation allowed by the Debye equation. The underlying structural model involves statistical sequences of cobalt layers and produces simulated XRD powder patterns bearing the concurrent signatures of hexagonal and cubic close packing. Size distribution, shape and distance distribution between pairs of atoms are also modelled. The simulation algorithm allows straightforward fitting to experimental data and hence the assessment of the model parameters. Analysis of …

The Large Hadron–Electron Collider at the HL-LHC

2021

The Large Hadron-Electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy-recovery technology, it collides a novel, intense electron beam with a proton or ion beam from the High-Luminosity Large Hadron Collider (HL-LHC). The accelerator and interaction region are designed for concurrent electron-proton and proton-proton operations. This report represents an update to the LHeC's conceptual design report (CDR), published in 2012. It comprises new results on the parton structure of the proton and heavier nuclei, QCD dynamics, and electroweak and top-quark physics. It is shown how the LH…