Development and testing of laser Doppler system components for wake vortex monitoring. Volume 1: Scanner development, laboratory and field testing and system modeling

A servo-controlled range/elevation scanner for the laser Doppler velocimeter (LDV) was developed and tested in the field to assess its performance in detecting and monitoring aircraft trailing vortices in an airport environment. The elevation scanner provides a capability to manually point the LDV telescope at operator chosen angles from 3.2 deg. to 89.6 deg within 0.2 deg, or to automatically scan the units between operator chosen limits at operator chosen rates of 0.1 Hz to 0.5 Hz. The range scanner provides a capability to manually adjust the focal point of the system from a range of 32 meters to a range of 896 meters under operator control, or to scan between operator chosen limits and at rates from 0.1 Hz to 6.9 Hz. The scanner controls are designed to allow simulataneous range and elevation scanning so as to provide finger scan patterns, arc scan patterns, and vertical line scan patterns. The development and testing of the unit is discussed, along with a fluid dynamic model of the wake vortex developed in a laser Doppler vortex sensor simulation program

Plant-Derived Bioactive Lipids Impacts Glucose Homeostasis and Energy Metabolism in Mice

There is a crucial need to identify and test sustainable alternatives to fish oil as a means to supplement dietary omega (n-3) fatty acids which have demonstrated health benefits to humans with metabolic syndrome and its associated diseases. Echium oil has a high content of the n-3 fatty acid stearidonic acid (SDA), a precursor of the bioactive lipids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) found in fatty cold-water fish, with known or possible functions to improve metabolism and delay the onset of or prevent diabetes. To characterize the effects of dietary Echium oil (EO) vs. fish oil (FO), the oils were formulated into either a low-fat (10% kcal; LF) or high fat (60% kcal; HF) diabetogenic diet and fed to male C57BL/6 Tac mice for 12 weeks. Compared to the low-fat or high-fat controls without the supplementation of EO or FO, EO and FO diets had no effect on blood glucose concentrations or plasma insulin levels throughout the study. The EO-enriched HF diet improved glucose tolerance by week 12 compared to the HF-CON (p\u3c0.05) and HF-FO (p\u3c0.1) groups. EO supplementation reduced visceral fat weight without affecting body mass, promoted a metabolically favorable high polyunsaturated fatty acid (PUFA) to saturated fatty acid (SFA) ratio in adipose and muscle tissues compared to the HF-CON and HF-FO diet groups, and led to higher tissue EPA and DHA concentrations compared to both LF and HF CON (p\u3c0.1). Tissue EPA and DHA in EO were not as high as the concentrations found in mice fed the FO diets for both HF and LF. In conclusion, EO-supplemented diets in mice appear to have distinct effects from FO diets that may be exploited in future strategies to curtail metabolic disorders

Remote measurement utilizing NASA's scanning laser Doppler systems. Volume 1. Laser Doppler wake vortex tracking at Kennedy Airport

Test operations of the Scanning Laser Doppler System (SLDS) at Kennedy International Airport (KIA) during August 1974 through June 1975 are reported. A total of 1,619 data runs was recorded with a totally operational system during normal landing operations at KIA. In addition, 53 data runs were made during cooperative flybys with the C880 for a grand total of 1672 recorded vortex tracks. Test crews were in attendance at KIA for 31 weeks, of which 25 weeks were considered operational and the other six were packing, unpacking, setup and check out. Although average activity equates to 67 recorded landing operations per week, two periods of complete runway inactivity spanned 20 days and 13 days, respectively. The operation frequency therefore averaged about 88 operations per week

Iterative Performance: Resistance and Opportunity in the Rhythm of Returns

This paper defines iterative performance as a live, time-based project in which multiple returns to the same framework (score, prompt, location, group) at regular intervals fundamentally shapes the dramaturgy of the work. The author asserts that the rhythm of regular returns inherent to iterative performance offers an alternative temporality that resists dominant, capitalist and heteronormative modes of living and making art, and creates the conditions for distinct artistic possibilities. Chapter 1 outlines the theoretical frameworks for this argument and introduces three key ways in which iterative performance is able to achieve the aforementioned goals. Chapter 2 explores three case studies through interviews with the artists, textual research and first-hand experience. The chapter concludes with two appendices, one a composite interview with Alex Torra and Iris McCloughan about The Sincerity Project , the other a partial index of contemporary iterative performance projects

Interview with Frankie Jetton

Frankie tells her story about growing up in Arkansas

Brain glucose sensing, glucokinase and neural control of metabolism and islet function.

It is increasingly apparent that the brain plays a central role in metabolic homeostasis, including the maintenance of blood glucose. This is achieved by various efferent pathways from the brain to periphery, which help control hepatic glucose flux and perhaps insulin-stimulated insulin secretion. Also, critically important for the brain given its dependence on a constant supply of glucose as a fuel--emergency counter-regulatory responses are triggered by the brain if blood glucose starts to fall. To exert these control functions, the brain needs to detect rapidly and accurately changes in blood glucose. In this review, we summarize some of the mechanisms postulated to play a role in this and examine the potential role of the low-affinity hexokinase, glucokinase, in the brain as a key part of some of this sensing. We also discuss how these processes may become altered in diabetes and related metabolic diseases.Funding and support from Wellcome Trust, Medical Research Council including the Cambridge MRC Centre for Study of Obesity and Related Disorders (MRC-CORD), NIHR Cambridge Biomedical Research Centre, Diabetes UK (RD05/003059) and Yousef Jameel Fund).This is the final version published version. It first appeared at http://onlinelibrary.wiley.com/doi/10.1111/dom.12334/abstract

Interview with Jerry Jetton

Jerry Jetton tells his perspective of growing up in Arkansas

Understanding Supply Chain Management: A Necessary Skill for Salespeople?

The purpose of this research is to explore phenomena within the experience of consumer packaged goods (CPG) account representatives in customer-facing roles by investigating the impact of supply chain training, experience, and skills on sales role effectiveness in CPG companies. Findings suggest that skills needed for sales include technical competency, excellent communication skills, and the knowledge to keep commitments. Supply chain understanding within their industry impacts these identified skills by removing confusion, improving identification with their company, realistically aligning customer expectations, and building confidence