Contemplation in Leadership and Leadership Development

Social and cultural change has impacted upon traditional religious activity, compliance, and fulfilment, opening opportunities for individuals to engage in a more spiritual orientation to both their inner and outer ‘self’. In parallel, social change has exposed individuals to a wider array of contemplative, spiritual practises, intensifying the quest for meaning and understanding in both asking and answering existential questions. At the same time, the intensity of activity in the World beyond self increases pressure and inherent complexity in engaging with others in meaningful ways. Addressing these contemporary challenges and enhancing interconnectedness, between inner and outer self, and between self and others, demands conscious choices concerning contemplative practice whilst recognising the pervasive impact upon whole-life experiences. Contemplative practice and spirituality cannot be ‘compartmentalised’ enabling impacts and outcomes to be brought into play in certain situations but ignored or over-ridden in others. Throughout life individuals continuously move between roles as managers, leaders, and followers, but the advantages and disadvantages are brought sharply into relief for those who occupy formal or informal roles within organisational settings. Based upon participant observation and autoethnography, the authors reflect upon their personal experiences within the context of Christian spirituality to illustrate the benefits accruing to individuals, especially in terms of interconnectedness, wellbeing, and leadership activity from engaging in contemplative practice. Unusually, reflecting autoethnography as the principal research methodology has facilitated much of the discussion and empirical, practical sections of the paper to be written in the first person. Core outcomes indicate that benefits derive from engagement in mindfulness and embodiment with either a theistic or non-theistic foundation

Projection Operator Formalisms and the Nuclear Shell Model

The shell model solve the nuclear many-body problem in a restricted model space and takes into account the restricted nature of the space by using effective interactions and operators. In this paper two different methods for generating the effective interactions are considered. One is based on a partial solution of the Schrodinger equation (Bloch-Horowitz or the Feshbach projection formalism) and other on linear algebra (Lee-Suzuki). The two methods are derived in a parallel manner so that the difference and similarities become apparent. The connections with the renormalization group are also pointed out.Comment: 4 pages, no figure

The Shell Model, the Renormalization Group and the Two-Body Interaction

The no-core shell model and the effective interaction $V_{{\rm low} k}$ can both be derived using the Lee-Suzuki projection operator formalism. The main difference between the two is the choice of basis states that define the model space. The effective interaction $V_{{\rm low} k}$ can also be derived using the renormalization group. That renormalization group derivation can be extended in a straight forward manner to also include the no-core shell model. In the nuclear matter limit the no-core shell model effective interaction in the two-body approximation reduces identically to $V_{{\rm low} k}$. The same considerations apply to the Bloch-Horowitz version of the shell model and the renormalization group treatment of two-body scattering by Birse, McGovern and Richardson

Efficient computation of the Shapley value for game-theoretic network centrality

The Shapley value—probably the most important normative payoff division scheme in coalitional games—has recently been advocated as a useful measure of centrality in networks. However, although this approach has a variety of real-world applications (including social and organisational networks, biological networks and communication networks), its computational properties have not been widely studied. To date, the only practicable approach to compute Shapley value-based centrality has been via Monte Carlo simulations which are computationally expensive and not guaranteed to give an exact answer. Against this background, this paper presents the first study of the computational aspects of the Shapley value for network centralities. Specifically, we develop exact analytical formulae for Shapley value-based centrality in both weighted and unweighted networks and develop efficient (polynomial time) and exact algorithms based on them. We empirically evaluate these algorithms on two real-life examples (an infrastructure network representing the topology of the Western States Power Grid and a collaboration network from the field of astrophysics) and demonstrate that they deliver significant speedups over the Monte Carlo approach. Fo

Determination of S17(0) from published data

The experimental landscape for the 7Be+p radiative capture reaction is rapidly changing as new high precision data become available. We present an evaluation of existing data, detailing the treatment of systematic errors and discrepancies, and show how they constrain the astrophysical S factor (S17), independent of any nuclear structure model. With theoretical models robustly determining the behavior of the sub-threshold pole, the extrapolation error can be reduced and a constraint placed on the slope of S17. Using only radiative capture data, we find S17(0) = 20.7 +/- 0.6 (stat) +/- 1.0 (syst) eV b if data sets are completely independent, while if data sets are completely correlated we find S17(0) = 21.4 +/- 0.5 (stat) +/- 1.4 (syst) eV b. The truth likely lies somewhere in between these two limits. Although we employ a formalism capable of treating discrepant data, we note that the central value of the S factor is dominated by the recent high precision data of Junghans et al., which imply a substantially higher value than other radiative capture and indirect measurements. Therefore we conclude that further progress will require new high precision data with a detailed error budget.Comment: 10 pages, 1 figure published versio

New approaches to renewable energy education

The rapid expansion of the renewable energy industry is producing a huge demand for welltrained professional people to design, install and maintain new systems. There is also a substantial need for policy analysts, researchers and teachers with experience in renewables. Many professional people are now seeking to move their career paths into the renewable energy field and they require advanced, on-the-job training. It is no longer sufficient to add a few topics or units on renewables to a conventional science or engineering course. Renewable energy education is emerging as a new discipline in its own right, with its own interdisciplinary curriculum that meets the criteria for sustainable development. Educating the community is also vital for creating a greater awareness of, and confidence in, renewable energy systems, and for training people to use them properly. This paper describes some new approaches to renewable energy education that seek to meet the needs of industry and society for high-quality, environmentally friendly and socially responsible energy supply systems

Existence of a Density Functional for an Intrinsic State

A generalization of the Hohenberg-Kohn theorem proves the existence of a density functional for an intrinsic state, symmetry violating, out of which a physical state with good quantum numbers can be projected.Comment: 6 page

Sum Rule Description of Color Transparency

The assumption that a small point-like configuration does not interact with nucleons leads to a new set of sum rules that are interpreted as models of the baryon-nucleon interaction. These models are rendered semi-realistic by requiring consistency with data for cross section fluctuations in proton-proton diffractive collisions.Comment: 22 pages + 3 postscript figures attache

Semiclassical evaluation of average nuclear one and two body matrix elements

Thomas-Fermi theory is developed to evaluate nuclear matrix elements averaged on the energy shell, on the basis of independent particle Hamiltonians. One- and two-body matrix elements are compared with the quantal results and it is demonstrated that the semiclassical matrix elements, as function of energy, well pass through the average of the scattered quantum values. For the one-body matrix elements it is shown how the Thomas-Fermi approach can be projected on good parity and also on good angular momentum. For the two-body case the pairing matrix elements are considered explicitly.Comment: 15 pages, REVTeX, 6 ps figures; changed conten

Multiple-Scattering Series For Color Transparency

Color transparency CT depends on the formation of a wavepacket of small spatial extent. It is useful to interpret experimental searches for CT with a multiple scattering scattering series based on wavepacket-nucleon scattering instead of the standard one using nucleon-nucleon scattering. We develop several new techniques which are valid for differing ranges of energy. These techniques are applied to verify some early approximations; study new forms of the wave-packet-nucleon interaction; examine effects of treating wave packets of non-zero size; and predict the production of $N^*$'s in electron scattering experiments.Comment: 26 pages, U.Wa. preprint 40427-23-N9