The Morals of the Women on Boards Story: Global Board Gender Diversity Efforts Still Need Fairness-Based Arguments to Move Regulation to the Next Chapter

The number of women on boards of public companies in the United States and Canada is still staggeringly low despite the fact that both of these jurisdictions have implemented disclosure-based regulation relating to board diversity. Typically, arguments in support of regulation aimed at increasing women\u27s participation on public boards fall into two categories: the business case and the fairness-based (or normative) case. The business case is essentially the idea that women bring some instrumental benefit to the board which leads to improvements in firm functioning or performance overall. While politically attractive, the business case for justifying regulation has yet to convince most of those in the business community in Canada and the U.S. If it had, we would have seen a much greater transformation in board composition in recent years than we have seen. The normative case, which is the idea that women deserve board seats because this is morally right, is less politically attractive because it is often seen to clash with the view, particularly in the U.S., that the role of corporations-and by implication the boards that manage them-is to maximize shareholder wealth.This article uses the Canadian and American experiences to argue:(1) that the normative case, by itself and in combination with the business case, can justify stronger regulation encouraging greater female participation on boards, especially given the role of the board and the involvement of institutional investors; and(2) that securities regulators in each jurisdiction have a critical and appropriate role to play in increasing board diversity.This article provides an overview of various jurisdictions\u27 regulatory regimes aimed at increasing board diversity and the respective increases of female participation on public boards. It goes on to outline the normative case and provides an analysis of the popular critiques and responses thereto. Also included is a description of the business case and its acknowledged weaknesses. Finally, it argues that normative-based rationales for implementing regulation aimed at enhancing gender diversity on public boards justify action by the SEC in the U.S. and provincial securities regulators in Canada, recognizing, however, that it is important for these capital market regulators to stay within the boundaries of their respective mandates and ensure that regulation does not harm the interests of investors or damage capital markets

Critical properties of the one-dimensional spin-1/2 antiferromagnetic Heisenberg model in the presence of a uniform field

In the presence of a uniform field the one-dimensional spin-$\frac{1}{2}$ antiferromagnetic Heisenberg model develops zero frequency excitations at field-dependent 'soft mode' momenta. We determine three types of critical quantities, which we extract from the finite-size dependence of the lowest excitation energies, the singularities in the static structure factors and the infrared singularities in the dynamical structure factors at the soft mode momenta. We also compare our results with the predictions of conformal field theory.Comment: 12 pages, REVTEX, 7 figures, submitted to Physical Review

Crashing the Boards: A Comparative Analysis of the Boxing Out of Women On Boards in the United States and Canada

This paper will first provide a critical, comparative look at the Canadian and the federal American responses to the under-representation of women on boards of large, publicly traded corporations. There will be a discussion about the competing conceptions which emerge in addressing the regulation of women on boards in the United States and Canada and why each jurisdiction implemented its policy when it did. The conceptions arising out of questions about under-representation of women on boards tend to fall within two categories: business case rationales and normative rationales. Given the competing conceptions of this issue, this paper will attempt to demonstrate how the regulatory regimes fit within these conceptions and the solutions which follow each conception. An argument will be advanced that not only does each disclosure regime fail to provide a solution to the underlying issue it is attempting to regulate, but also neither regime even advances the goal the regulators purport to be advancing. Finally, a closer look at the polarizing reactions to Bill 826 provides a hint as to the future direction of the American and Canadian debates. This paper will be one of the first to discuss Bill 826 and what it may mean for the U.S. and Canada

The Raman optical activity of β-D-xylose: where experiment and theory meet

Besides its applications in bioenergy and biosynthesis, β-D-xylose is a very simple monosaccharide that exhibits relatively high rigidity. As such, it provides the best basis to study the impact of different solvation shell radii on the computation of its Raman optical activity (ROA) spectrum. Indeed, this chiroptical spectroscopic technique provides exquisite sensitivity to stereochemistry, and benefits much from theoretical support for interpretation. Our simulation approach combines density functional theory (DFT) and molecular dynamics (MD) in order to efficiently account for the crucial hydration effects in the simulation of carbohydrates and their spectroscopic response predictions. Excellent agreement between the simulated spectrum and the experiment was obtained with a solvation radius of 10 Å. Vibrational bands have been resolved from the computed ROA data, and compared with previous results on different monosaccharides in order to identify specific structure–spectrum relationships and to investigate the effect of the solvation environment on the conformational dynamics of small sugars. From the comparison with ROA analytical results, a shortcoming of the classical force field used for the MD simulations has been identified and overcome, again highlighting the complementary role of experiment and theory in the structural characterisation of complex biomolecules. Indeed, due to unphysical puckering, a spurious ring conformation initially led to erroneous conformer ratios, which are used as weights for the averaging of the spectral average, and only by removing this contribution was near perfect comparison between theory and experiment achieved

Distinguishing epimers through raman optical activity

The Raman optical activity spectra of the epimers β-d-glucose and β-d-galactose, two monosaccharides of biological importance, have been calculated using molecular dynamics combined with a quantum mechanics/molecular mechanics approach. Good agreement between theoretical and experimental spectra is observed for both monosaccharides. Full band assignments have been carried out, which has not previously been possible for carbohydrate epimers. For the regions where the spectral features are opposite in sign, the differences in the vibrational modes have been noted and ascribed to the band sign changes

Design And Optimization Of A De Novo Protein Charge Separation Dyad

The ever-increasing demand for cheap, plentiful energy to fuel the needs of a growing population requires research into alternative clean energy. Solar irradiation has the potential to power the planet many times over; the challenge is efficient capture and conversion of this energy source. Nature has already solved this problem with photosynthesis, which harvests solar irradiation converting it to stored chemical energy and is the source of the energy for life. The goal of my dissertation is to use de novo designed protein to mimic the charge separation system in photosynthesis. A stable protein scaffold will be designed and used to position photoactive cofactors at predetermined distances to yield a high efficient charge separation domain. The creation of a simple single chain four helix bundle protein capable of binding two to three distinct cofactors for use as a light-activated charge separation domain is described. This protein was de novo designed using biologically derived binary patterning with metal ligand coordination and cysteine modification to control cofactor placement. The use of a heme and zinc phthalocyanine cofactors allow for simple bis-histidine and mono-histidine binding sites as the differentiating factor positioning and the quinone is positioned using cysteine mutations. The domain has been expressed and combined with cofactors and biophysically characterized and preliminary data on electron transfer have been obtained

First-principles analysis of the interplay between electronic structure and volume change in colquiriite compounds during Li intercalation

A main source of capacity fading in lithium-ion batteries is the degradation of the active cathode materials caused by the series of volume changes during charge and discharge cycles. The quaternary colquiriite-type fluorides Li$_x$CaFeF$\mathrm{_6}$ and Li$_x$CaCoF$\mathrm{_6}$ were reported to have negligible volume changes in specific Li concentration ranges, making the underlying colquiriite structure a promising candidate for so-called zero-strain behavior. Using first-principles electronic structure calculations based on density functional theory with a Hubbard-$U$ correlation correction on the transition-metal ions, we systematically investigate the equilibrium volumes of the colquiriite-type fluorides Li$_x$CaMF$\mathrm{_6}$ with M =Ti, V, Cr, Mn, Fe, Co, and Ni at the Li concentrations $x$=0, 1, and 2. We elucidate the connection between the total volume of the structures and the local volumes of fluorine coordinated octahedra around the cations, and we find trends along the series of the 3d transition-metal elements. In the lithiation step from $x$=1 to $x$=2 we find volume changes of about 10 %, and we discuss the discrepancy to the experimentally reported smaller value for Li$_x$CaFeF$\mathrm{_6}$. From $x$=0 to $x$=1 we describe the compensating structural mechanisms that lead to an exceptionally small volume change of Li$_x$CaMnF$\mathrm{_6}$. This compound is therefore a particularly promising zero-strain cathode material.Comment: 13 pages, 9 Figure

COMPLETE SOLUTION OF THE XXZ-MODEL ON FINITE RINGS. DYNAMICAL STRUCTURE FACTORS AT ZERO TEMPERATURE.

The finite size effects of the dynamical structure factors in the XXZ-model are studied in the euclidean time $(\tau)$-representation. Away from the critical momentum $p=\pi$ finite size effects turn out to be small except for the large $\tau$ limit. The large finite size effects at the critical momentum $p=\pi$ signal the emergence of infrared singularities in the spectral $(\omega)$-representation of the dynamical structure factors.Comment: PostScript file with 12 pages + 11 figures uuencoded compresse

Solution structure of Mannobioses unravelled by means of Raman optical activity

Structural analysis of carbohydrates is a complicated endeavour, due to the complexity and diversity of the samples at hand. Herein, we apply a combined computational and experimental approach, employing molecular dynamics (MD) and density functional theory (DFT) calculations together with NMR and Raman optical activity (ROA) measurements, in the structural study of three mannobiose disaccharides, consisting of two mannoses with varying glycosidic linkages. The disaccharide structures make up the scaffold of high mannose glycans and are therefore important targets for structural analysis. Based on the MD population analysis and NMR, the major conformers of each mannobiose were identified and used as input for DFT analysis. By systematically varying the solvent models used to describe water interacting with the molecules and applying overlap integral analysis to the resulting calculational ROA spectra, we found that a full quantum mechanical/molecular mechanical approach is required for an optimal calculation of the ROA parameters. Subsequent normal mode analysis of the predicted vibrational modes was attempted in order to identify possible marker bands for glycosidic linkages. However, the normal mode vibrations of the mannobioses are completely delocalised, presumably due to conformational flexibility in these compounds, rendering the identification of isolated marker bands unfeasible

Molecular dynamics study of CO2 absorption and desorption in zinc imidazolate frameworks

This research utilised two high-performance computing facilities. Development of the force field was carried out using Queen Mary's MidPlus computational facilities, supported by QMUL Research-IT and funded by EPSRC grant EP/K000128/1. The molecular dynamics simulations were carried out using the ARCHER UK National Supercomputing Service (http://www.archer.ac.uk), with access made available through our membership of the UK's HEC Materials Chemistry Consortium, which is funded by EPSRC (EP/L000202). MG and CY were supported by both the China Scholarship Council and Queen Mary University of London. AM was supported by a European Union Marie Sklodowska-Curie fellowship