1,493 research outputs found
Do leaders need emotional intelligence? A study of the relationship between emotional intelligence and leadership of change
No full textOver the last few years there has been a significant and stained growth in interest in the area of leadership (Chaudry 2000; Bagshaw & Bagshaw 1999; Goffee & Jones 2000). This paper reviews the development in thinking and research in relation to
leadership. The limitations of progress in our understanding of the phenomenon are discussed (e.g., Kets De Vries 1993). Building from this review, the potential for a view of leadership relating to its role in the context of change (e.g., Conner 1999; Kotter 1998) and its relationship to Emotional Intelligence (e.g., Higgs & Dulewicz 1999) is explored. The relationship between the Competencies associated with change leadership and Emotional Intelligence is examined by means of a quantitative study involving a sample of 70 managers. Change Leadership Competencies are operationalised using an instrument reported by Higgs and Rowland (2000). Emotional Intelligence is operationalised using the EIQ developed by Dulewicz and Higgs (1999). The study reported in this paper demonstrates strong correlations between six of the seven elements of Emotional Intelligence (as defined by Higgs & Dulewicz 1999) and all five
factors in the Change Leadership Competency (CLC) model (Higgs & Rowland 2000). In addition, the overall EI score correlates significantly with the overall CLC score. The author concludes that Emotional Intelligence potentially plays a significant part in the effectiveness of leadership in a change context and identifies areas for further research
Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons
No full textOpen Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.A search for a standard model Higgs boson decaying into a pair of τ leptons is performed using events recorded by the CMS experiment at the LHC in 2011 and 2012. The dataset corresponds to an integrated luminosity of 4.9 fb−1 at a centre-of-mass energy of 7 TeV and 19.7 fb−1 at 8 TeV. Each τ lepton decays hadronically or leptonically to an electron or a muon, leading to six different final states for the τ -lepton pair, all considered in this analysis. An excess of events is observed over the expected background contributions, with a local significance larger than 3 standard deviations for m H values between 115 and 130 GeV. The best fit of the observed H → τ τ signal cross section times branching fraction for m H = 125 GeV is 0.78 ± 0.27 times the standard model expectation. These observations constitute evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons
Do leaders need EI? A study of the relationship between EI and leadership of change
No full textOver the last few years there has been a significant and sustained growth in interest in the area of leadership. This paper reviews the development in thinking and research in relation to leadership. The limitations of progress in our understanding of the phenomenon are discussed. Building from this review, the potential for a view of leadership relating to its role in the context of change and its relationship to Emotional Intelligence is
explored. The relationship between the Competencies associated with change leadership and Emotional Intelligence is examined by means of a quantitative study involving a
sample of 70 managers. Change Leadership Competencies are operationalised using an instrument reported by Higgs and Rowland (2000). Emotional Intelligence is operationalised using the EIQ developed by Dulewicz and Higgs (1999). The study
reported in this paper demonstrates strong correlations between six of the seven elements of Emotional Intelligence and all five
factors in the Change Leadership Competency (CLC) model.
In addition, the overall EI score correlates significantly with the overall CLC score. The author concludes that Emotional Intelligence potentially plays a significant part in
the effectiveness of leadership in a change context and identifies areas for further research
In Vivo Performance of the Femoral Head-Neck Taper Connection and Development of an Electrochemical Framework for Quantitative Corrosion Investigations
No full textCorrosion at the modular head-neck connection in total hip arthroplasty has been shown to have deleterious biological consequences, and recent clinical observations have postulated that it may compromise the integrity of the taper connection. This dissertation summarizes the patient demographics, clinical details, and design variables of hip implants that were examined to understand their impact on the in vivo performance of taper junctions. Furthermore, it describes electrochemical assessment methods that were developed to quantitatively evaluate the effects of corrosion phenomena. In vivo taper performance was assessed using femoral components retrieved from revision surgery and from cadaveric donors. Preliminary time-to-event analyses were conducted on a collection of 5,821 retrieved joint prostheses, identifying risks factors for infection consistent with the findings of administrative databases and implant registries. The role of an activated immune system on corrosion at the head-neck taper was then explored with a subset of these explants. The results did not indicate more severe corrosion for devices revised with infection, but suggested greater corrosion severity for devices that were implanted in male patients and during primary arthroplasty procedures. Multivariable analysis of clinical and design variables did not identify an association between corrosion and the size of the modular taper, but found increased corrosion for heavier patients, longer implantation times, greater femoral head offsets and tapers with a lower flexural rigidity. Mechanical assessment of taper connection strength demonstrated that more severely corroded stem trunnions were associated with stronger taper connections. Additionally, greater corrosion was observed on retrievals from revision surgery than on those from cadaveric donors. In consideration of the electrochemical nature of corrosion processes, a new framework was devised to overcome limitations of visual corrosion assessments. Analysis using electrochemical impedance spectroscopy identified decreased impedance and increased constant phase element (CPE) capacitance as the strongest predictors of increased corrosion severity. Additionally, lower values for impedance phase angle, CPE-exponent and polarization resistance were associated with increased corrosion. From microscopic and metallographic inspection, it was found that components with subsurface damage features had significantly higher capacitance and lower impedance values than those only exhibiting surface corrosion damage features. Given that the surface area of an electrode is inversely proportional to its impedance and directly proportional to its capacitance, electrochemical analyses may provide an opportunity to identify penetrative corrosion features without destructive metallographic evaluation.Ph.D., Biomedical Engineering -- Drexel University, 201
Emotional intelligence: construct and concurrent validity
No full textThe study reported in this paper is one part of a much larger investigation into the quality of working life and Stress of managers in a large multi–national retail organisation conducted by Slaski, a co-author. In addition to a number of measures of stress and job performance, participants completed two measures of EI, the Dulewicz & Higgs EIQ and the Bar-on EQ-i. The study provided an opportunity to explore the degree to which the existing EIQ validity results might be replicated on a higher level of management; to investigate the hypothesis that EIQ is related to morale and stress at work; to explore changes in EIQ scores after an Emotional Intelligence training course; and to determine to what extent two different Emotional Intelligence instruments measure the same construct and elements.Correlations between the two instruments showed both content and construct validity while correlations between the EIQ and measures of morale and stress at work demonstrated construct validity. Significant relationships were found between EIQ and current job performance, thus providing further evidence of the concurrent validity of the EIQ. Finally, evidence is presented showing improvements of Emotional Intelligence scores after training using both EI instruments, thus demonstrating that EI is capable of development.<br/
Is there a relationship between organisational culture and the implementation and leadership of change?
No full textIt is widely asserted that a high proportion of change initiatives fail (e.g. Kotter, 1996; Author/s to be provided, 2000). Furthermore the success of initiatives involving cultural change is significantly lower (Smith, 2003). However, there is some debate around whether or not change can only be effected if organisational culture is also changed or that, for change to be successful it has to be positioned within the dominant organisational culture paradigm (e.g. Trompenaars & Wooliams, 2004). In a study by Author/s to be provided (2003) it was suggested that approaches to change based on an understanding of complexity, rather than an assumption of linearity, were more likely to be successful. Furthermore they identified the significance of leader behaviours in impacting on change success. In particular they indicated that leader-centric behaviours (Shaping) were negatively related to success. Behaviours focusing on creating a change framework and building capability (Framing) were positively related to success. In discussing these findings they indicated a need for further research to explore their results in differing organisational contexts. They also identified a need to explore the impact of differing organisational cultures on the findings. These two needs for research are the focus of this paper. The study reported involved collecting stories from change leaders in nine organisations. Whilst the Author/s to be provided (2003) framework was used to explore change approaches and leader behaviours, the construct of culture was operationalised using the Goffee and Jones (1998) model. The findings presented offer some support for the proposition that there is a relationship between culture, change approach, leadership behaviours and change success. However, the sample size does provide a limitation of the research and further exploration in future research is called for. <br/
To accompany manuscript published in Royal Society Open Science (2020)
No full textSPSS file of the data described in the publication. Should be self-explanatory but please feel free to contact the lead or corresponding author in case of any query - [email protected]; [email protected]
Decoupling MSSM Higgs sector and heavy Higgs decay
No full textAbstractThe decoupling limit in the MSSM Higgs sector is the most likely scenario in light of the Higgs discovery. This scenario is further constrained by MSSM Higgs search bounds and flavor observables. We perform a comprehensive scan of MSSM parameters and update the constraints on the decoupling MSSM Higgs sector in terms of 8 TeV LHC data. We highlight the effect of light SUSY spectrum in the heavy neutral Higgs decay in the decoupling limit. We find that the chargino and neutralino decay mode can reach at most 40% and 20% branching ratio, respectively. In particular, the invisible decay mode BR(H0(A0)→χ˜10χ˜10) increases with increasing Bino LSP mass and is between 12%–15% (13%–20%) for 30<mχ˜10<100 GeV. The leading branching fraction of heavy Higgses decay into sfermions can be as large as 80% for H0→t˜1t˜1⁎ and H0/A0→τ˜1τ˜2⁎+τ˜1⁎τ˜2. The branching fractions are less than 10% for H0→h0h0 and 1% for A0→h0Z for mA>400 GeV. The charged Higgs decays to neutralino plus chargino and sfermions with branching ratio as large as 40% and 60%, respectively. Moreover, the exclusion limit of leading MSSM Higgs search channel, namely gg,bb¯→H0, A0→τ+τ−, is extrapolated to 14 TeV LHC with high luminosities. It turns out that the ττ mode can essentially exclude regime with tanβ>20 for L=300 fb−1 and tanβ>15 for L=3000 fb−1
Search for a CP-odd Higgs boson decaying to Zh in pp collisions at root s=8 TeV with the ATLAS detector
No full textSee paper for full list of authors – 13 pages plus author list + cover pages (30 pages total), 5 figures, 2 tables, submitted to Phys. Lett. B, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-06/International audienceA search for a heavy, CP-odd Higgs boson, , decaying into a boson and a 125 GeV Higgs boson, , with the ATLAS detector at the LHC is presented. The search uses proton--proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb. Decays of CP-even bosons to or pairs with the boson decaying to electron or muon pairs are considered, as well as decays with the boson decaying to neutrinos. No evidence for the production of an boson in these channels is found and the 95% confidence level upper limits derived for \sigma (gg\rightarrow A) \times \mbox{BR}(A \rightarrow Zh) \times \mbox{BR}(h \rightarrow f\bar{f}) are 0.098--0.013 pb for and 0.57--0.014 pb for in a range of 220--1000 GeV. The results are combined and interpreted in the context of two-Higgs doublet models
Enhancement of Higgs to diphoton decay width in non-perturbative Higgs Model
No full textWe investigate a possibility if a loop diagram via Higgsino can enhance the Higgs to diphoton decay width in supersymmetric models with an extension of Higgs sector. A model with an additional non-renormalizable term of Higgs fields is firstly analyzed where the higher order term can introduce the Higgs coupling to Higgsinos as well as charged Higgs bosons. We point out that a choice of the Higgs coupling to obtain a significant size of enhancement of diphoton decay width reduces the Higgs mass and/or a size of non-renormalizable term needs to be large and a cutoff scale is around the weak scale. Another model in which the Higgsino mass term is generated by a non-perturbative instanton effect via a strong dynamics in a context of SUSY QCD is also suggested. It is shown that the sign of the Higgs coupling to fermions is opposite from perturbative models due to an operator including bosonic fields in the denominator and a constructive contribution to the diphoton decay amplitude can be easily obtained in this kind of model. (C) 2012 Elsevier B.V. All rights reserved
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