55,061 research outputs found
The Multi-Dimensional Nature of Wind Shear Investigations
The impact of air carrier accidents has lead to investigations into the wind shear phenomenon. This report includes such topics as wind shear characterization, aircraft pilot performance in shear conditions, terminology and language development, wind shear forecasting, ground and flight wind shear displays, wind shear data collection and dissemination, and pilot factors associated with wind shear encounters. Some areas which show promise for short term solutions to the wind shear hazards includes: (1) improved gust front warning through ground based sensors; (2) greater pilot awareness of wind shear through improved training; and (3) airborne displays based on groundspeed/airspeed comparisons
Electrical phase angle as a new method to measure fish condition
In this study, phase angle (the ratio of resistance and reactance of tissue to applied electrical current) is presented as a possible new method to measure fish condition. Condition indices for fish have historically been
based on simple weight-at-length relationships, or on costly and timeconsuming laboratory procedures that measure specific physiological parameters. Phase angle is introduced
to combine the simplicity of a quick field-based measurement with the specificity of laboratory analysis by
directly measuring extra- and intracellular water distribution within an organism, which is indicative of its
condition. Phase angle, which can be measured in the field or laboratory in the time it takes to measure length and weight, was measured in six species of fish at different states (e.g., fed vs. fasted, and postmortem) and under different environmental treatments (wild vs. hatchery, winter vs. spring). Phase angle reflected different states of condition. Phase angles 15° indicated fish that were in better condition. Phase angle was slightly affected
by temperatures (slope = – 0.19) in the 0–8°C range and did not change in fish placed on ice for <12 hours. Phase angle also decreased over time in postmortem fish because of cell
membrane degradation and subsequent water movement from intra- to extracellular (interstitial) spaces. Phase angle also reflected condition of specific anatomical locations within the fish
Globalization, aggregate productivity, and inflation
This paper investigates the effects of globalization on aggregate productivity, output growth, and inflation. I present a simple two-country, two-good, flexible exchange rate model using Fisher Ideal aggregators to examine changes in the mapping from microeconomic to macroeconomic productivity growth as nations globalize. Advances in industry-specific labor productivity are shown to have potentially a much greater pass-through to aggregate productivity, output, and prices the more open nations are to trade. Globalization raises both the level and growth rate of aggregate productivity by allowing more economywide reorganization in response to ongoing technological advances than would be optimal otherwise. ; I develop a globalized version of the quantity equation of money, where inflation in the home country depends on domestic money growth and a weighted average of home and foreign GDP growth. Relative country size, consumer preferences, production technologies, and the openness of trade are the chief determinants of these weights. Calibrating the model to match certain stylized facts about the U.S. and global economies, U.S. consumer price inflation falls from roughly 3.8 percent when economies are closed to under 2 percent in the transition period, eventually settling at around 2.3 percent in free trade. Producer and consumer prices trek a common path under autarky but diverge as the world globalizes. Both home and foreign aggregate productivity growth rates increase—by 0.4 and 0.7 percentage points, respectively. Roughly 30 percent of the output weight in the determination of home inflation shifts from the home to the foreign economy—greater than might be expected from strong home bias.Globalization ; Inflation (Finance) ; Microeconomics ; Macroeconomics ; Gross domestic product
Highly linear, sensitive analog-to-digital converter
Analog-to-digital converter converts 10 volt full scale input signal into 13 bit digital output. Advantages include high sensitivity, linearity, low quantitizing error, high resistance to mechanical shock and vibration loads, and temporary data storage capabilities
Mutual Fund Expense Disclosures: A Behavioral Perspective
Mutual funds have enjoyed phenomenal growth with their numbers exceeding the number of public companies and their assets aggregating in excess of $9 trillion. Increasingly they are the investment instrument of choice by the proverbial widows, widowers and orphans, and a few school teachers are included as well. But how are best can that choice be one that is not only informed but informed in a way more likely to elicit a wise decision? This paper examines from a behavioral perspective how regulation can best disclose information related to two key factors for investors to compare competing mutual funds: fund returns and fund expenses. Our analysis reflects that the current disclosure process is deficient because it fails to reflect the insights of research on judgment and decision making, and particularly the need to distinguish between the availability of information and its processability by its user. The message of our article is straightforward: if regulators adhered to the insights provided by our paper, not only investors, but also the fund\u27s directors, would be greatly empowered so that better returns and lower costs could be expected
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