A simple device for in-situ direct shear and sinkage tests

This work introduces a simple device designed to perform in-situ direct shear and sinkage tests on granular materials as sand, clays, or regolith. It consists of a box nested within a larger box. Both have open bottoms, allowing them to be lowered into the material. Afterwards, two rotating plates on opposite sides of the outer box will rotate outwards in order to clear regolith on either side, providing room for the inner box to move relative to the plates and perform a shear test without the resistance of the surrounding soil. From this test, Coulomb parameters, including cohesion and internal friction angle, as well as, Bekker parameters can be inferred. This device has been designed for a laboratory setting, but with few modifications, could be put on the underside of a rover for use in a remote location. The goal behind this work is to ultimately create a compact, but accurate measuring tool to put onto a rover or any kind of exploratory vehicle to test for regolith properties of celestial bodies

Expanding the scope of density derived electrostatic and chemical charge partitioning to thousands of atoms

The density derived electrostatic and chemical (DDEC/c3) method is implemented into the onetep program to compute net atomic charges (NACs), as well as higher-order atomic multipole moments, of molecules, dense solids, nanoclusters, liquids, and biomolecules using linear-scaling density functional theory (DFT) in a distributed memory parallel computing environment. For a >1000 atom model of the oxygenated myoglobin protein, the DDEC/c3 net charge of the adsorbed oxygen molecule is approximately -1e (in agreement with the Weiss model) using a dynamical mean field theory treatment of the iron atom, but much smaller in magnitude when using the generalized gradient approximation. For GaAs semiconducting nanorods, the system dipole moment using the DDEC/c3 NACs is about 5% higher in magnitude than the dipole computed directly from the quantum mechanical electron density distribution, and the DDEC/c3 NACs reproduce the electrostatic potential to within approximately 0.1 V on the nanorod’s solvent-accessible surface. As examples of conducting materials, we study (i) a 55-atom Pt cluster with an adsorbed CO molecule and (ii) the dense solids Mo2C and Pd3V. Our results for solid Mo2C and Pd3V confirm the necessity of a constraint enforcing exponentially decaying electron density in the tails of buried atoms

The Story of Pinocchio: Now I\u27m a Real Boy

Corporate responsibility has become a matter of great concern after the Enron and WorldCom scandals rocked corporate culture. This Article suggests that corporate irresponsibility stems from the failure of corporations to address the concerns of non- shareholders and the failure of shareholders and regulatory watchdogs to look beneath the corporate surface. Competing schools of thought, such as neoclassical economics, progressive corporate theory, and outsider corporate theory, offer divergent analyses of the corporate responsibility dilemma. Regulatory responses to the crisis of corporate conscience remain untested. This Article suggests that our failure to foresee corporate irresponsibility partly comes from over on traditional theories of shareholder primacy. Change is unlikely to come from within the corporation, so regulators must look beyond the board of directors to ensure responsible management. This Article proposes criminal liability for corporate indifference to the health and well-being of foreseeable victims of corporate irresponsibility. Prove yourself brave, truthful, and unselfish, and someday you will be a real boy. —PINOCCHIO (Walt Disney Studios 1940

The Lemonade Stand: Feminist and Other Reflections on the Limited Liability of Corporate Shareholders

The sultriness that was summer in D.C. blanketed the pedestrians returning to Capitol Hill. Trickling toward home through air that passively resisted, I almost overlooked a shape emerging from the haze of my own street. It might have been some atmospherically-induced apparition; rather, there, in the 1990s, in front of a well-kept urban rowhouse with door adorned by yuppie wreath, sat an immaculate child, seraphically presiding over a linen-covered table bearing a pitcher made of Tupperware. His neatly lettered sign, presumably prepared by an invisible caregiver in endorsement of his enterprise, read Lemonade - 50 Cents. The little boy with the pitcher became a fixture of late August. Each business day, he held his post from four to six p.m. Although I never patronized his stand, I watched others who did. He seemed quite pleased as each quarter clinked into his pocket, and he never failed to thank each customer and to suggest a repeat transaction. There may be some romantic explanation for the young merchant\u27s dedication. He might, after all, have been contributing to a shortfall in the family mortgage payment consequent to the recession that rippled across the Washington legal community-in this scenario, the briefcases and well-tailored suits sported by both his parents might just have been a brave front. He might have been saving for a life-preserving operation for a younger sister (who, to the best of my knowledge, did not exist)