1,537 research outputs found
A Topological Study of Contextuality and Modality in Quantum Mechanics
Kochen-Specker theorem rules out the non-contextual assignment of values to
physical magnitudes. Here we enrich the usual orthomodular structure of quantum
mechanical propositions with modal operators. This enlargement allows to refer
consistently to actual and possible properties of the system. By means of a
topological argument, more precisely in terms of the existence of sections of
sheaves, we give an extended version of Kochen-Specker theorem over this new
structure. This allows us to prove that contextuality remains a central feature
even in the enriched propositional system.Comment: 10 pages, no figures, submitted to I. J. Th. Phy
The marine Neogene of Eastern Venezuela : a preliminary report
Proceedings of tile 1" R.C.A.N.S. Congress, Lisboa, October 1992The studied marine Neogene-Quaternary of NE Venezuela outcrop in the localities of the Araya peninsula and in the Cubagua and
Margarita islands discordant upon a basementof metamorphic rocks and pre-rniocenic sediments. These neogene-quaternary sections belong principally to the Cubagua Formation, which is composed of a lower clayish interval (Cerro Verde Member) and an upper one of calcareous nature (Cerro Negro Member), and to La Tejita and Tortuga formations.
The age of this sedimentary interval, based upon analysis of planktonic foraminifera, ranges from the lower part of Late Miocene
to Holocene. According to the calcareous nannoflora, in the Cubagua Formation a floral assemblage was identified which goes from the Zone NN10 until the limit of NN16-NN17 zones.
The fauna of benthic foraminifera allowed one to establish that the paleoenvironmental evolution of the Cubagua Formation varied
from bathial to neritic depths during the Early Pliocene.
After a period of elevation an erosion during the greater part of the Pleistocene, water invading the eroded surface depositing upon it the calcareous sequence of the Tortuga Formation
Detection and prevention of financial abuse against elders
This article is made available through the Brunel Open Access Publishing Fund. Copyright @ The Authors. This article is published under the Creative Commons Attribution (CC BY 3.0) licence. Anyone
may reproduce, distribute, translate and create derivative works of this article (for both
commercial and non-commercial purposes), subject to full attribution to the original publication
and authors. The full terms of this licence may be seen at http://creativecommons.org/licences/
by/3.0/legalcode.Purpose â This paper reports on banking and finance professionals' decision making in the context of elder financial abuse. The aim was to identify the case features that influence when abuse is identified and when action is taken.
Design/methodology/approach â Banking and finance professionals (n=70) were shown 35 financial abuse case scenarios and were asked to judge how certain they were that the older person was being abused and the likelihood of taking action.
Findings â Three case features significantly influenced certainty of financial abuse: the nature of the financial problem presented, the older person's level of mental capacity and who was in charge of the client's money. In cases where the older person was more confused and forgetful, there was increased suspicion that financial abuse was taking place. Finance professionals were less certain that financial abuse was occurring if the older person was in charge of his or her own finances.
Originality/value â The research findings have been used to develop freely available online training resources to promote professionals' decision making capacity (www.elderfinancialabuse.co.uk). The resources have been advocated for use by Building Societies Association as well as CIFAS, the UK's Fraud Prevention Service.The research reported here was funded by the UK cross council New Dynamicsof Ageing Programme, ESRC Reference No. RES-352-25-0026, with Mary L.M. Gilhooly asPrincipal Investigator. Web-based training tools, developed from the research findings, weresubsequently funded by the ESRC follow-on fund ES/J001155/1 with Priscilla A. Harries asPrincipal Investigator
The Redistributive Effects of Pandemics: Evidence of the Spanish Flu
This paper examines the impact of a pandemic in a developing economy. Measured by excess deaths relative to the historical trend, the 1918 influenza in Spain was one of the most intense in Western Europe. However, aggregate output and consumption were only mildly affected. In this paper we assess the impact of the flu by exploiting within-country variation in âexcess deathsâ and we focus on the returns to factors of production. Our main result is that the effect of flu-related âexcess deathsâ on real wages is large, negative, and short-lived. The effects are heterogeneous across occupations, from null to a 15 per cent decline,concentrated in 1918. The negative effects are exacerbated in more urbanized provinces. In addition, we do not find effects of the flu on the returns to capital. Indeed, neither dividends nor real estate prices (houses and land) were negatively affected by flu-related increases in mortality. Our interpretation is that the Spanish Flu represented a negative demand shock that was mostly absorbed by workers, especially in more urbanized regions
The 1918 flu pandemic left Spain a more unequal country
The 1918 flu pandemic had a short-lived but devastating effect on Spain, write Sergi Basco (Universitat de Barcelona), Jordi DomĂšnech (Universidad Carlos III) and Joan Roses (LSE). Unlike previous pandemics, it increased inequality, as the better-off could afford to socially distance to protect themselves
Contextual logic for quantum systems
In this work we build a quantum logic that allows us to refer to physical
magnitudes pertaining to different contexts from a fixed one without the
contradictions with quantum mechanics expressed in no-go theorems. This logic
arises from considering a sheaf over a topological space associated to the
Boolean sublattices of the ortholattice of closed subspaces of the Hilbert
space of the physical system. Differently to standard quantum logics, the
contextual logic maintains a distributive lattice structure and a good
definition of implication as a residue of the conjunction.Comment: 16 pages, no figure
Prospects for probing the gluon density in protons using heavy quarkonium hadroproduction
We examine carefully bottomonia hadroproduction in proton colliders,
especially focusing on the LHC, as a way of probing the gluon density in
protons. To this end we develop some previous work, getting quantitative
predictions and concluding that our proposal can be useful to perform
consistency checks of the parameterization sets of different parton
distribution functions.Comment: LaTeX, 14 pages, 6 EPS figure
A Comparative Environmental Assessment of Heat Pumps and Gas Boilers towards a Circular Economy in the UK
This research compares the potential environmental impacts of heat pumps with gas boilers and scenario analysis through utilising the life cycle approach. The study analyses the current situation with the baseline model and assesses future applications with Circular Economy (CE), Resource Efficiency (RE) and Limited Growth (LG) scenarios. Then, hybrid applications of low-carbon technologies and different manufacturing scenarios are investigated according to baseline and CE scenarios. Our results show that the use and manufacturing phases are responsible for 74% and 14% of all environmental impacts on average as expected. Even though the electricity mix of the UK has decarbonised substantially during the last decade, heat pumps still have higher lifetime impacts than gas boilers in all environmental categories except climate change impact. The carbon intensity of heat pumps is much lower than gas boilers with 0.111 and 0.097 kg CO2e for air source heat pumps and ground source heat pumps, whereas the boiler stands as 0.241 kg CO2e. Future scenarios offer significant reductions in most of the impact categories. The CE scenario has the highest potential with a 44% reduction for heat pumps and 27% for gas boilers on average. RE and LG scenarios have smaller potential than the CE scenario, relatively. However, several categories expect an increase in future scenarios such as freshwater ecotoxicity, marine ecotoxicity and metal depletion categories. High deployment of offshore wind farms will have a negative impact on these categories; therefore, a comprehensive approach through a market introduction programme should be provided at the beginning before shifting from one technology to another. The 50% Hybrid scenario results expect a reduction of 24% and 20% on average for ASHP and GSHP, respectively, in the baseline model. The reduction is much lower in the CE scenario, with only a 2% decrease for both heat pumps because of the reduction in heat demand in the future. These results emphasise that even though the importance of the use phase is significant in the baseline model, the remaining phases will play an important role to achieve Net-Zero targets in the future
Non-decoupling effects from heavy Higgs bosons by matching 2HDM to HEFT amplitudes
In this work we explore the low energy effects induced from the integration
of the heavy Higgs boson modes, , and , within the Two Higgs
Doublet Model (2HDM) by assuming that the lightest Higgs boson is the one
observed experimentally at GeV. We work within the context of
Effective Field Theories, focusing on the Higgs Effective Field Theory (HEFT),
although some comparisons with the Standard Model Effective Field Theory
(SMEFT) case are also discussed through this work. Our main focus is placed in
the computation of the non-decoupling effects from the heavy Higgs bosons and
the capture of such effects by means of the HEFT coefficients which are
expressed in terms of the input parameters of the 2HDM. Our approach to solve
this issue is by matching the amplitudes of the 2HDM and the HEFT for physical
processes involving the light Higgs boson in the external legs, instead of
the most frequently used matching procedure at the Lagrangian level. More
concretely, we perform the matching at the amplitudes level for the following
physical processes, including scattering and decays: ,
, , , , and . One important point of this work is that the
matching is required to happen at low energies compared to the heavy Higgs
boson masses, and these are heavier than the other particle masses. The proper
expansion for this heavy mass limit is also defined here, which provides the
results for the non-decoupling effects presented in this work. We finally
discuss the implications of the resulting effective coefficients, and remark on
the interesting correlations detected among them.Comment: 35 pages, 15 figure
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