Supersonic missile aerodynamic and performance relationships for long-range mission profiles

1984 ◽  
Vol 21 (3) ◽  
pp. 234-240 ◽  
Author(s):  
Robert J. Krieger
Keyword(s):  
Long Range ◽  
And Performance

Performing with Structure

2020 ◽  
pp. 287-331
Author(s):  
Daphne Leong
Keyword(s):  
Long Range ◽  
Third Culture ◽  
Practical Applications ◽  
Pitch Structure ◽  
And Performance

This chapter poses the question of how one synthesizes analysis and performance. Its centerpiece is Leathwood’s analysis of local frictions and long-range connections in the pitch structure of Carter’s Changes; his demonstration of their embodiment in guitaristic timbres, tactile shapes, and kinesthetic moves; and his modeling of how such knowledge might be internalized to inspire vital and free performances. “Improvising Changes: Exercises for Guitarists” and an accompanying video provide practical applications. Leong’s Prelude and Postlude frame Leathwood’s material and highlight how a “third culture” of analysis and performance can be inhabited and passed on—modeled and taught in studio and classroom.

scholarly journals Variability and Performance of Short to Long-Range Single Baseline RTK GNSS Positioning in Indonesia

2019 ◽  
Vol 94 ◽  
pp. 01012 ◽  
Author(s):  
Irwan Gumilar ◽  
Brian Bramanto ◽  
Fuad F. Rahman ◽  
I Made D. A. Hermawan
Keyword(s):  
Long Range ◽  
High Frequency ◽  
Carrier Phase ◽  
Satellite System ◽  
High Accuracy ◽  
Gnss Positioning ◽  
And Performance ◽  
Gnss Network ◽  
Single Baseline ◽  
Global Navigation Satellite

As the modernized Global Navigation Satellite System (GNSS) method, Real Time Kinematic (RTK) ensures high accuracy of position (within several centimeters). This method uses Ultra High Frequency (UHF) radio to transmit the correction data, however, due to gain and power issues, Networked Transport of RTCM via Internet Protocol (RTCM) is used to transmit the correction data for a longer baseline. This Research aims to investigate the performance of short to long-range single baseline RTK GNSS (Up to 80 KM) by applying modified LAMBDA method to resolve the ambiguity in carrier phase. The RTK solution then compared with the differential GNSS network solution. The results indicate that the differences are within RTK accuracy up to 80 km are several centimeter for horizontal solution and three times higher for vertical solution.

Operation and performance of the New Horizons Long-Range Reconnaissance Imager during the Pluto encounter

2017 ◽  
Author(s):  
Harold A. Weaver ◽  
Jorge I. Núñez ◽  
Howard W. Taylor ◽  
John R. Hayes ◽  
Andrew F. Cheng ◽  
...  
Keyword(s):  
Long Range ◽  
New Horizons ◽  
And Performance

scholarly journals Cellular Simulation for Distributed Sensing over Complex Terrains

2018 ◽  
Author(s):  
Tuyen Truong ◽  
Bernard Pottier ◽  
Hiep Huynh
Keyword(s):  
Long Range ◽  
Graphics Processing Units ◽  
High Performance ◽  
Physical Phenomenon ◽  
Cellular Systems ◽  
Large Area ◽  
Simulation Techniques ◽  
And Performance ◽  
Application Fields ◽  
Physical Phenomena

Long-range radio transmissions open new sensor application fields, in particular for environment monitoring. As an example, the {\sl LoRa} radio protocol enables to connect remote sensors at distance as long as ten kilometers in line-of-sight. However, the large area covered also bring several difficulties, such as the placement of sensing devices in regard to geography topology, or the variability of communication latency. Sensing the environment also carries constraints related to the interest of sensing points in relation with a physical phenomenon. Criteria for designs are thus evolving a lot from the existing methods, especially in complex terrains. This article describes simulation techniques based on geography analysis to compute long-range radio coverages and radio characteristics in these situations. As radio propagation is just a particular case of physical phenomena, it is shown how a unified approach also allows to characterize the behavior of potential physical risks. The case of heavy rainfall and flooding is investigated. Geography analysis is achieved using segmentation tools to produce cellular systems which are in turn translated into code for high-performance computations. The paper provides results from practical complex terrain experiments using LoRa, that confirm the accuracy of the simulation, scheduling characteristics for sample networks, and performance tables for simulations on middle range Graphics Processing Units (GPUs).

292 Rest Schemes and Inflight Sleep Duration on Long Range and Ultra-Long Range Commercial Airline Routes

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A117-A117
Author(s):  
Michael Rempe ◽  
Ian Rasmussen ◽  
Gregory Belenky ◽  
Amanda Lamp
Keyword(s):  
Long Range ◽  
Strong Predictor ◽  
Sleep Time ◽  
Wide Distribution ◽  
Pilot Performance ◽  
Airline Pilots ◽  
Sleep Timing ◽  
Commercial Airline ◽  
United Airlines ◽  
And Performance

Abstract Introduction Pilots flying long range (LR; 8-16 hour) and ultra-long range (ULR; 16+ hour on 10% of trips) commercial airline routes use a variety of work/rest schedules during flights, resulting in a wide distribution of total inflight sleep time (TIFS) amounts. Since sleep is a strong predictor of performance, it is important to quantify TIFS and determine rest scheme patterns that optimize sleep opportunity and subsequent alertness and performance. Here we report rest schemes for pilots on LR and ULR routes and longer TIFS values than previously reported. These rest schemes can serve as templates to increase TIFS and improve pilot performance, particularly on ULR routes. Methods 427 commercial airline pilots provided data for this sub-study that was part of a larger study on Fatigue Risk Management System (FRMS) routes. Inflight sleep timing and duration were measured on 3 LR and 5 ULR routes. Inflight sleep times were self-reported in a sleep/work logbook and verified using actigraphy. Results Most outbound and inbound landing crews took one break during the second half of the flight (average LR TIFS=4.0 hr; average ULR TIFS=4.9 hr), while most outbound and inbound relief crews consequently took one break during the first half of the flight (average LR TIFS=3.5 hr; average ULR TIFS=4.5 hr). However, three of the five ULR routes used more complex split rest schemes for landing and relief crews, primarily on outbound flights (average TIFS=5.0 hr). Across all routes and both crews, the maximum average TIFS reached ~6 hours. Conclusion Our results indicate that pilots on average are sleeping inflight more than previous studies demonstrated. Additionally, we found that crews on some ULR flights used more complicated rest schemes, but still generally preferred 2 or 3 breaks. These findings have implications for airline procedures and aviation policies by showing that pilots may be sleeping longer than originally expected on LR and ULR flights. Recommending rest schemes that allow for the greatest inflight sleep opportunity may provide the best chance for inflight recuperation, especially before the Top of Descent critical phase of flight. Support (if any) United Airlines

WiFi HaLow for Long-Range and Low-Power Internet of Things: System on Chip Development and Performance Evaluation

2021 ◽  
Vol 59 (7) ◽  
pp. 101-107
Author(s):  
Il-Gu Lee ◽  
Duk Bai Kim ◽  
Jeongki Choi ◽  
Hyungu Park ◽  
Sok-Kyu Lee ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Internet Of Things ◽  
Low Power ◽  
Long Range ◽  
System On Chip ◽  
And Performance ◽  
On Chip
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