SIR-A imagery in geologic studies of the Sierra Madre Oriental, northeastern Mexico. Part 1 (Regional stratigraphy): The use of morphostratigraphic units in remote sensing mapping

SIR-A imaging was used in geological studies of sedimentary terrains in the Sierra Madre Oriental, northeastern Mexico. Geological features such as regional strike and dip, bedding, folding and faulting were readily detected on the image. The recognition of morphostructural units in the imagery, coupled with field verification, enabled geological mapping of the region at the scale of 1:250 000. Structural profiling lead to the elaboration of a morphostructural map allowing the recognition of an echelon folds and field trends which were used to postulate the ectonic setting of the region

Is Inter-Organizational Collaboration Always a Good Thing?

The human service literature suggests that the concept and outcomes of inter-organizational collaboration are not well understood. Nonetheless, inter-organizational collaboration has emerged as a statement of direction for social welfare policy and professional practice. In light of an unclear understanding of collaboration, this analysis suggests the concept has powerful symbolic qualities, which perpetuates its continued use. While the general notion of collaboration is promising, human service administrators and stakeholders must couple critical thinking and action to clarify the meaning, intent, application, and outcomes of inter-organizational collaboration. This article raises the question as to whether the popularity of inter-organization collaboration is grounded in its proven efficacy as a means of achieving specific human service recipient outcomes or symbolism and ideology

Superconducting Bearing Design for Outer Rotor Flywheel Using Lumped Parameter Techniques

This paper describes the application of lumped parameter modeling techniques to designing high temperature superconducting bearings for outer-rotor flywheel energy storage systems. The lumped parameter models decrease computational time by 99% compared to Finite Element Analysis (FEM) without compromising fidelity needed to capture the non-linear and hysteretic force-displacement behavior between a levitated permanent magnet and bulk superconductor. The techniques formulated can be used to quickly evaluate lifting capacity and translational stiffness for a superconducting bearing design. The validity of the modeling approach has been verified by comparing results from FEM studies and experimental tests.Center for Electromechanic

Cargo transport by molecular motor complexes in the crowded cell

The cell requires a high degree of internal organization for its survival. A set of specialized proteins known as molecular motors, are responsible for positioning large molecules and organelles in their correct spatiotemporal location. These proteins must navigate through the crowded cytoplasm as they haul their cargoes to their destination. Although the properties of the individual motors have been studied extensively in vitro, less is known about their functioning inside the cell. Of particular interest is the question of how in vivo opposing forces, e.g. cytoplasmic drag, affect cargo transport. This work presents studies of how cytoplasmic drag forces are involved in cargo transport at various length scales. First, a novel model of centrosome centering in large cells is presented. This model shows that the drag forces experienced by motor-driven cargoes are sufficient to position the large centrosome and associated microtubule aster; however, it raises the question of how these opposing forces affect the function of molecular motors. To address this issue, a combination of biophysical and biochemical tools is used to reveal the average response to drag forces of molecular motors as they haul lipid droplets in Drosophila embryos. A strikingly different response to load is found for the molecular motors kinesin-1 and cytoplasmic dynein. The results here presented validate, for the first time, the applicability of the Force-velocity curves previously measured in vitro for in vivo studies.Physic

Celebrity Politics in the American South: The Case of Ben “Cooter” Jones

Celebrities get involved in American politics as activists and candidates for office. The literature suggests that celebrities have many advantages over traditional political candidates. However, the case of Ben Jones, “Cooter” from The Dukes of Hazzard, suggests that fame is not enough to win elections. The political environment is the decisive factor in determining whether a celebrity candidate wins or loses an election. The South’s realignment from Democrat to Republican made it difficult for Democrat Ben Jones to succeed in a changing South. Like other celebrities that lost the fundraising battle Jones lost several bids for office. Celebrities, like Fred Grandy, that win the fundraising battle have a higher chance of electoral success

Celebrity Politics in the American South: The Case of Ben Cooter Jones

Celebrities get involved in American politics as activists and candidates for office. The literature suggests that celebrities have many advantages over traditional political candidates. However, the case of Ben Jones, Cooter from The Dukes of Hazzard, suggests that fame is not enough to win elections. The political environment is the decisive factor in determining whether a celebrity candidate wins or loses an election. The South’s realignment from Democrat to Republican made it difficult for Democrat Ben Jones to succeed in a changing South. Like other celebrities that lost the fundraising battle Jones lost several bids for office. Celebrities, like Fred Grandy, that win the fundraising battle have a higher chance of electoral success