Development and test of a Microwave Ice Accretion Measurement Instrument (MIAMI)

The development of an ice accretion measurement instrument that is a highly sensitive, accurate, rugged and reliable microprocessor controlled device using low level microwave energy for non-instrusive real time measurement and recording of ice growth history, including ice thickness and accretion rate is discussed. Data is displayed and recorded digitally. New experimental data is presented, obtained with the instrument, which demonstrates its ability to measure ice growth on a two-dimensional airfoil. The device is suitable for aircraft icing protection. It may be mounted flush, non-intrusively, on any part of an aircraft skin including rotor blades and engine inlets

Revealing structure-function relationships in functional flow networks via persistent homology

Complex networks encountered in biology are often characterized by significant structural diversity. Whether it be differences in the three-dimensional structure of allosteric proteins, or the variation among the micro-scale structures of organisms' cerebral vasculature systems, identifying relationships between structure and function often poses a difficult challenge. Here we showcase an approach to characterizing structure-function relationships in complex networks applied in the context of flow networks tuned to perform specific functions. Using persistent homology, we analyze flow networks tuned to perform complex multifunctional tasks, answering the question of how local changes in the network structure coordinate to create functionality at at the scale of the entire network. We find that the response of such networks encodes hidden topological features - sectors of uniform pressure - that are not apparent in the underlying network architectures, Regardless of differences in local connectivity, these features provide a universal topological description for all networks that perform these types of functions. We show that these features correlate strongly with the tuned response, providing a clear topological relationship between structure and function and structural insight into the limits of multifunctionality.Comment: 22 pages (double column), 12 figure

Whoops - The Imminent Reconciliation of U.S. Securities Laws with International Comity after Morrison v. National Australia Bank and the Drafting Error in the Dodd-Frank Act

The article contends that the Dodd-Frank Act and the case, Morrison v. National Australia Bank, restrict the extraterritorial reach of U.S. fraud laws to private rights of action involving domestic transactions of U.S. securities. The author notes that the U.S. legal jurisdiction is governed by the policy of minimal interference and respect for sovereignties and by the principle of comity. He states that this position will help establish a cooperative regulatory effort across global markets

The Impact of Social Support on Diet Quality in Stroke Survivors

Stroke is a leading cause of death and disability in the United States, and nearly 25% of strokes are repeat events. Secondary prevention strategies are needed to reduce the disabling sequelae of recurrences. Dietary modification to include more fruits, vegetables, and polyunsaturated fats is a promising tactic. If stroke leads to disability, patients may not be able to cook or grocery shop for themselves. Thus, one factor that may influence diet quality is social support, but its effect on post-stroke diet has not been assessed. In this cross-sectional study, we will examine the association between social support and diet quality among stroke survivors. We will measure participants’ perceived social support and diet quality, while analyzing contributory behaviors, like cooking and shopping. We anticipate that patients with greater social support will have a higher quality diet. By establishing this relationship, interventions that increase social support may be utilized in secondary prevention

New Advances in Forming Functional Ceramics for Micro Devices

Micro electromechanical systems (MEMS) are finding uses in an increasing number of diverse applications. Currently the fabrication techniques used to produce such MEMS devices are primarily based on 2-D processing of thin films. The challenges faced by producing more complex structures (e.g. high aspect ratio, spans, and multi-material structures) require the development of new processing techniques. Potential solutions to these challenges based on low temperature processing of functional ceramics, selective chemical patterning, and micro-moulding are presented to show that it is possible to create complex functional ceramic structures which incorporate non-ceramic conducting and support structures. The capabilities of both techniques are compared and the relative advantages of each explored

Incompatibility of Diophantine Equations Arising from the Strong Factorial Conjecture

The Strong Factorial conjecture was recently formulated by Arno van den Essen and Eric Edo. The problem is motivated by several outstanding problems including the Jacobian, Image, and Vanishing conjectures. In this defense, we discuss how the conjecture can be reformulated in terms of systems of integer polynomials and we present several special cases in which the conjecture holds

Where do uncertainties reside within environmental risk assessments? Expert opinion on uncertainty distributions for pesticide risks to surface water organisms

A reliable characterisation of uncertainties can aid uncertainty identification during environmental risk assessments (ERAs). However, typologies can be implemented inconsistently, causing uncertainties to go unidentified. We present an approach based on nine structured elicitations, in which subject-matter experts, for pesticide risks to surface water organisms, validate and assess three dimensions of uncertainty: its level (the severity of uncertainty, ranging from determinism to ignorance); nature (whether the uncertainty is epistemic or aleatory); and location (the data source or area in which the uncertainty arises). Risk characterisation contains the highest median levels of uncertainty, associated with estimating, aggregating and evaluating the magnitude of risks. Regarding the locations in which uncertainty is manifest, data uncertainty is dominant in problem formulation, exposure assessment and effects assessment. The comprehensive description of uncertainty described will enable risk analysts to prioritise the required phases, groups of tasks, or individual tasks within a risk analysis according to the highest levels of uncertainty, the potential for uncertainty to be reduced or quantified, or the types of location-based uncertainty, thus aiding uncertainty prioritisation during environmental risk assessments. In turn, it is expected to inform investment in uncertainty reduction or targeted risk management action

Hot Rocks Steakhouse

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