Well Clear: General Aviation and Commercial Pilots' Perceptioin of Unmanned Aerial Vehicles in the National Airspace System

This research explored how different pilots perceived the concept of the Well Clear Boundary (WCB) and observed if that boundary changed when dealing with manned versus unmanned aircraft systems (UAS), and the effects of other variables. Pilots' WCB perceptions were collected objectively through simulator recordings and subjectively through questionnaires. Objectively, significant differences were found in WCB perception between two pilot types (general aviation [GA], and Airline Transport Pilots [ATPs]), and significant WCB differences were evident when comparing two intruder types (manned versus unmanned aircraft). Differences were dependent on other manipulated variables (intruder approach angle, ownship speed, and background traffic levels). Subjectively, there were differences in WCB perception across pilot types; GA pilots trusted UAS aircraft higher than the more experienced ATPs. Conclusions indicate pilots' WCB mental models are more easily perceived as time-based boundaries in front of ownship, and more easily perceived as distance-based boundaries to the rear of ownship

Well Clear: General Aviation and Commercial Pilots\u27 Perception of Unmanned Aerial Vehicles in the National Airspace System

The purpose of this research was to determine how different pilot types perceived the subjective concept of the Well Clear Boundary (WCB) and to observe if that boundary changed when dealing with manned versus unmanned aircraft systems (UAS) as well as the effects of other variables. Pilots\u27 perceptions of the WCB were collected objectively through simulator recordings and subjectively through questionnaires. Together, these metrics provided quantitative and qualitative data about pilot WCB perception. The objective results of this study showed significant differences in WCB perception between two different pilot types, as well as WCB significant differences when comparing two different intruder types (manned versus unmanned aircraft). These differences were dependent on other manipulated variables, including intruder approach angle, ownship speed, and background traffic levels. Subjectively, there were evident differences in WCB perception across pilot types; general aviation (GA) pilots appeared to trust UAS aircraft slightly more than did the more experienced Airline Transport Pilots (ATPs). Overall, it is concluded that pilots\u27 mental models of the WCB are more easily perceived as time-based boundaries in front of ownship, while being more easily perceived as distance-based boundaries to the rear of ownship

Laid To Rust: Proposing Strict Liability in Tort for Prop Firearm Injuries Following the Alec Baldwin Shooting

Prop gun safety standards are often a mixed bag. “Despite some industry reforms following previous tragedies, the federal workplace safety agency in the U.S. is silent on the issue of on-set gun safety.” Some states follow film labor union and movie studio guidelines. Other states have regulations on pyrotechnic devices, but not on prop guns. Thus, states should consider what successful legal course of action a wrongfully deceased heir can bring in the event that no criminal charges can be filed. This article proposes that the best regulatory approach and tort liability course of action is through (1) treating prop guns the same as a pyrotechnic device, and (2) characterizing the use of prop guns on-set as an abnormally or inherently dangerous activity for purposes of strict liability, should no criminal charges be granted. Part I provides both a mechanical and historical overview of the use of prop weapons in film and television. Part II further explains how props are regulated. Parts III and IV analyze the tort legal framework and explain why strict liability analysis is best suited for injuries caused by such prop gun devices

Masterpieces of Simplicity: Newport Desks and Chairs, 1740-1780

The exhibit mounted at the Newport Historical Society from the fall of 1986 to the fall of 1987 answered one question and posed another. It answered the question: what characteristics identify a piece of colonial furniture as having been made in Newport? The question posed by the exhibit is why did Newport cabinetmakers develop their own unique and remarkable style? This article examines and describes the exhibit itself and seeks to answer these questions regarding colonial furniture design and creation

ISWP Caster Test Version 2.2

This document contains the assembly instructions, electrical wiring information, component manuals, bill of materials, and part drawings required for building the ISWP Caster Test equipment

A Study of How Underperforming Firms Follow Industry Leaders When Adopting ERP Systems and the Economic Effects of Their Adoption Decisions

Researchers have proposed but not tested that early-stage adopters of ERP systems tend to be higher-performing firms that adopt as a means of gaining or maintaining a competitive advantage. In contrast, they have proposed that late-stage adopters are underperforming firms that experience institutional pressures and make adoption decisions partly in response to those pressures and to try to improve performance and catch-up to industry leaders. In this study, we examine the relationship between firm performance and ERP adoption. We found that late-stage adopters tend to have lower financial performance relative to the overall market in the years leading up to adoption decisions as compared to early-stage adopters that tended to outperform the market in years leading up to adoption decisions. This finding demonstrates the relationship between firm performance and ERP adoption. We also found that, post-adoption, the relative performance of late-stage adopters tends to improve more than early-stage adopters. This finding suggests that following the actions of industry leaders and adopting ERP systems can have economic benefits for underperforming firms

ISWP Wheelchair Double Drum Test Version 1.3

This document outlines the required materials and proper assembly instructions for the International Society of Wheelchair Professionals Standard Testing -- Wheelchair Double Drum Testing Machine in compliance with RESNA WC-1 ISO 7176 standards that require performing 200,000 revolutions at a speed of 1 m/s +/- 0.1 m/s. Following the detailed assembly instructions are a bill of materials and 2-dimensional drawings for all of the sub-assemblies and their individual parts. This document outlines the electrical requirements and recommendations to successfully build this equipment, however specific electrical components and electrical assembly instructions are to be determined by the user

ISWP Wheelchair Curb Drop Test Version 1.3

This document outlines the required materials and proper assembly instructions for the International Society of Wheelchair Professionals Standard Testing --Wheelchair Curb Drop Testing Machine in compliance with RESNA WC-1/ ISO 7176 standards that require dropping the wheelchair from a height of 50 mm for 6,666 cycles. Following the detailed assembly instructions are a bill of materials and 2-dimensional drawings for all of the sub-assemblies and their individual parts. This document outlines the electrical requirements and recommendations

Elasticity of semi-flexible polymers

We present a numerical solution of the Worm-Like Chain (WLC) model for semi-flexible polymers. We display graphs for the end-to-end distance distribution and the force-extension relation expected from the model. We predict the expected level of fluctuations around the mean value in force-extension curves. Our treatment analyses the entire range of polymer lengths and reproduces interesting qualitative features seen in recent computer simulations for polymers of intermediate length. These results can be tested against experiments on single molecules. This study is relevant to mechanical properties of biological molecules.Comment: five pages revtex five figures, slightly improved version with recent references adde