10 documents found, page 1 of 1
Can operational efficiency in the Portuguese electricity sector be improved? Ye...
Zheng, H.; Roseta-Palma, C.; Ramalho, J. J. S.Efficiency has long been an issue of concern in the electricity sector. Most existing studies relate technical efficiency in electricity generation to policy factors while that in transmission and distribution is associated with environmental factors. Although firm operation is also a relevant perspective on this topic, its explicit impact upon technical efficiency has rarely been studied. In order to analyze t...
Search for supersymmetry with gauge-mediated breaking in diphoton events at D0
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, D. L.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahmed, S. N.; Ahn, S. H.Made available in DSpace on 2022-04-28T19:57:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-02-04; We report the results of a search for supersymmetry (SUSY) with gauge-mediated breaking in the missing transverse energy distribution of inclusive diphoton events using 263 pb-1 of data collected by the DO experiment at the Fermilab Tevatron Collider in 2002-2004. No excess is observed above the backgro...
Measurement of the Bs0 lifetime in the exclusive decay channel Bs0 → J/ψφ
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, D. L.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahmed, S. N.; Ahn, S. H.Made available in DSpace on 2022-04-28T19:57:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-02-04; Using the exclusive decay Bs0 → J/ψ (μ+μ-)φ (K+K-), we report the most precise single measurement of the Bs0 lifetime. The data sample corresponds to an integrated luminosity of approximately 220 pb-1 collected with the DO detector at the Fermilab Tevatron Collider in 2002-2004. We reconstruct 337 signa...
Measurement of dijet azimuthal decorrelations at central rapidities in pp̄ coll...
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, D. L.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahmed, S. N.; Ahn, S. H.Made available in DSpace on 2022-04-28T20:03:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-06-10; Correlations in the azimuthal angle between the two largest transverse momentum jets have been measured using the D0 detector in pp̄ collisions at a center-of-mass energy s=1.96TeV. The analysis is based on an inclusive dijet event sample in the central rapidity region corresponding to an integrated lum...
Observation and properties of the X(3872) decaying to J/ψπ+π- in pp̄ collisions...
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, D. L.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahmed, S. N.; Ahn, S. H.Made available in DSpace on 2022-04-29T00:12:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-10-15; The discovery of a new particle, X(3872) by the Belle collaboration in the decay mode B±→ XK± (X→ J/ψπ+π - was discussed. It was found that the mass of the X(3872) was measured to be 3872.0 ± 0.6(stat) ± 0.5 (syst) MeV/C2. The X(3872) particle were observed in approximately 230 pb-1 of data with a signi...
Search for Doubly Charged Higgs Boson Pair Production in the Decay to μ+μ+μ-μin...
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, D. L.; Adams, M.; Adams, T.; Agelou, M.; Agram, J. L.; Ahmed, S. N.; Ahn, S. H.Made available in DSpace on 2022-04-29T00:13:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-10-01; The pair production of doubly charged Higgs bosons in the decay to μ+ μ+ μ- μ- in pp̄ Collisions was investigated. It was observed that the total signal efficiency for the event selection was (47.5±2.5)% and does not depend on the mass of the doubly charged Higgs boson in the studied mass range. Data an...
Does directed technological change favor energy? Firm-level evidence from Portugal
Zheng, H.; Roseta-Palma, C.; Ramalho, J. J. S.Economic performance is closely related with energy consumption, the major part of which still comes from non-renewable sources. While endeavoring to promote renewable energy, policy makers are interested in technological change that also increases energy efficiency. However, both growth models of directed technological change and microeconomic theories regarding innovation suggest that technological change is ...
Directed technological change, energy and more: a modern story
Zheng, H.; Roseta-Palma, C.; Ramalho, J. J. S.Reliance of modern economic activities on the use of energy, most of which still comes from non-renewable sources, provokes concerns regarding the most efficient utilization of energy inputs in production. While most theory expects directed technological change to be biased towards the non-renewable input, there is rare macro-level evidence that technological change is actually biased towards energy rather than...
Heuristic Active Learning for the Prediction of Epileptic Seizures Using Single...
Marques, Joao M. C.; Cerdeira, Hilda A. [UNESP]; Tanaka, Edgar; Vitor, Conrado de; Gomez, Paula; Zheng, H.; Callejas, Z.; Griol, D.; Wang, H.; Hu, XMade available in DSpace on 2019-10-04T12:35:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-01-01; Predicting epileptic seizure occurrence has long been a goal of the community surrounding it. Accurate prediction, however, is still elusive. This work presents a modified pipeline for the training of seizure prediction systems which aims to attenuate the effects of current data labeling strategies - an...
A new model for university-industry cooperation: The case of Chengdu Keda Ltd
Peng, S.; Ferreira, F.; Zheng, H.In this study, we develop a firm-dominated incremental cooperation model. Following the critical review of current literature and various cooperation models, we identified a number of strengths and shortcomings that form the basis for our framework. The objective of our theoretical model is to contribute to overcome the existing gap within academic literature and theory pertaining to University-Industry (U-I) c...