System Implications of the Different Powering Distributions for the ATLAS Upgrade Strips Tracker

AbstractThis paper compares the two novel approaches for the power distribution of the ATLAS Upgrade strips tracker modules, serial and DC-DC powering, from the point of view of a system. Numerous variables have been taken into account, such as total power dissipation and power efficiency, system reliability and protection, noise performances, impact on the material budget of the tracker, and services needs and re-usability

Conflict behavior and conflict management in the organizations

Some people think conflict is a topic that should not be discussed and that we should not engage in conflict. Productively engaging in conflict is always valuable. Most people are willing and interested in resolving their conflicts; they just need the appropriate skill set and opportunities in which to practice this skill set. Without a conflict skill set, people want to avoid conflict, hoping it will go away or not wanting to make a “big deal out of nothing.” Research and personal experiences show us that, when we avoid conflict, the conflict actually escalates and our thoughts and feelings become more negative. Through conflict self-awareness we can more effectively manage our conflicts and therefore our professional and personal relationships. Furthermore, by discussing issues related to conflict management, teams can establish an expected protocol to be followed by team members when in conflict. All teams and organizations have a conflict culture (the way the team responds to conflict). However, most teams never discuss what the conflict culture is, therefore providing the opportunity for individual team members to make assumptions that can be counterproductive to the team. Practicing one’s conflict management skills leads to more successful engagement in conflict with outcomes of relief, understanding, better communication, and greater productivity for both the individual and the team. When we manage our conflicts more effectively, we use less energy on the burdensome tasks such as systemic conflict and get to spend more of our energy on our projects at work and building our relationships

Cognitive outcome and gamma noise power unrelated to neuregulin 1 and 3 variation in schizophrenia

Background Neuregulins are a family of signalling proteins that orchestrate a broad range of cellular responses. Four genes encoding Neuregulins 1–4 have been identified so far in vertebrates. Among them, Neuregulin 1 and Neuregulin 3 have been reported to contribute to an increased risk for developing schizophrenia. We hypothesized that three specific variants of these genes (rs6994992 and rs3924999 for Neuregulin 1 and rs10748842 for Neuregulin 3) that have been related to this illness may modify information processing capacity in the cortex, which would be reflected in electrophysiological parameters (P3b amplitude or gamma noise power) and/or cognitive performance. Methods We obtained DNA from 31 patients with schizophrenia and 23 healthy controls and analyzed NRG1 rs6994992, NRG1 rs3924999 and NRG3 rs10748842 promoter polymorphisms by allelic discrimination with real-time polymerase chain reaction (PCR). We compared cognitive outcome, P300 amplitude parameters and an electroencephalographic measure of noise power in the gamma band between the groups dichotomized according to genotype. Results Contrary to our hypothesis, we could not detect any significant influence of variation in Neuregulin 1/Neuregulin 3 polymorphisms on cognitive performance or electrophysiological parameters of patients with schizophrenia. Conclusions Despite our findings, we cannot discard that other genetic variants and, more likely, interactions between those variants and with genetic variation related to different pathways may still influence cerebral processing in schizophrenia

Direct resolution of unoccupied states in solids via two photon photoemission

Non-linear effects in photoemission are shown to open a new access to the band structure of unoccupied states in solids, totally different from hitherto used photoemission spectroscopy. Despite its second-order nature, strong resonant transitions occur, obeying exact selection rules of energy, crystal symmetry, and momentum. Ab-initio calculations are used to demonstrate that such structures are present in low-energy laser spectroscopy experimental measurements on Si previously published. Similar resonances are expected in ultraviolet angle-resolved photoemission spectra, as shown in a model calculation on Al.Comment: 12 pages, including 4 figure

Areas and floors: The size of surface sites. A methodology

En los estudios sobre el patrón de asentamiento y en los análisis del territorio, la variable "tamaño" del asentamiento juega un papel importante. Considerada como "proxy" de la población, no siempre resulta fácil de calcular en ausencia de estructuras arRegarding the studies of settlement pattern and territories in archaeology, the size of the settlements becomes an important variable. Although it is considered as a proxy of population, it is not always easy to calculate it in absence of archaeological

Chiral transition-metal complexes as Brønsted-acid catalysts for the asymmetric Friedel-Crafts hydroxyalkylation of indoles.

The Friedel-Crafts reaction between 3,3,3-trifluoropyruvates and indoles is efficiently catalysed by the iridium complex [(η5-C 5Me5)Ir{(R)-Prophos}(H2O)][SbF 6]2 (1) with up to 84% ee. Experimental data and theoretical calculations support a mechanism involving the Brønsted-acid activation of the pyruvate carbonyl by the protons of the coordinated water molecule in 1. Water is not dissociated during the process and, therefore, the catalytic reaction occurs with no direct interaction between the substrates and the metal. This journal is © the Partner Organisations 2014.The authors acknowledge the Ministerio de Economía y Competitividad (MINECO, Grants CTQ2006-03030/BQU, CTQ2009-10303/BQU, CTQ2011-27033 and Consolider Ingenio 2010 CSD2006-003), Gobierno de Aragón (Grupo Consolidado: Catálisis Homogénea Enantioselectiva), Generalitat de Catalunya (2009SGR0259) and the ICIQ foundation for financial support. A. S. and R. R. acknowledge MINECO for predoctoral fellowships. S. D.-G. acknowledges MINECO for a “Torres Quevedo” contract.Peer Reviewe

Coal mine ventilation air methane combustion in a catalytic reverse flow reactor: Influence of emission humidity

The role of the humidity content on the performance of catalytic reverse flow reactors (RFRs) for the abatement of methane emissions from coal mines is studied in this manuscript. It has been demonstrated that this technique is very useful for the abatement, and even upgrading, of these emissions. However, the effect of humidity on the reactor performance has not been addressed yet, in spite of being well known that water is an inhibitor in catalytic combustion. Experimental studies in a lab-scale isothermal fixed bed reactor demonstrated that water decreases the activity of a palladium on alumina catalyst for the combustion of methane, but this inhibition is entirely reversible, results fitting well to a Langmuir–Hinshelwood kinetic model. Then, the influence of water was studied in a bench-scale RFR operating at near adiabatic conditions at different switching times (100–600 s) and methane feed concentrations (2700–7200 ppm). Finally, a mathematical model for the reverse flow reactor, including the kinetic model with water inhibition, has been validated using the experimental results. This model is of key importance for designing this type of reactors for the treatment of mine ventilation emissions

Conversación con Francisco Jarauta

A few days before meeting Francisco Jarauta for our conversation, we received a text of his, “Los tiempos de la arquitectura”, which we have included in the digital version of this second number of the magazine. It has the same title as the opening lecture of the 2013-2014 Academic Course, a lecture he had given on the 26th September in the assembly room of the Engineering and Architecture School at the University of Zaragoza, reason why we understood that he thought of our conversation as having already started then

Diffraction of swift atoms after grazing scattering from metal surfaces: N/Ag(111) system

6 páginas, 6 figuras.-- PACS number(s): 79.20.Rf, 79.60.Bm, 34.20.Cf, 61.85.+pDiffraction patterns produced by grazing scattering of fast N atoms from a Ag(111) surface are investigated by employing the surface eikonal approximation. This method is a distorted-wave theory that takes into account the coherent addition of contributions coming from different projectile paths. In the model the projectile-surface potential is obtained from an accurate density-functional theory calculation. The dependence of the scattered projectile spectra on impact energy and incidence channel is analyzed, and possible incident direction and energy range for the observation of the interference patterns are predicted. In addition, it is found that as a result of the high reactivity of N atoms, asymmetries of the surface potential might be detected through their effects on diffraction patterns.M.S.G. acknowledges financial support from CONICET, UBA, and ANPCyT of Argentina.Peer reviewe

Alteraciones de la superficie del cuerpo vertebral en una población medieval de Logroño (s. XI y XII)

X Congreso Nacional de Paleopatología. Univesidad Autónoma de Madrid, septiembre de 200