Results 111 to 120 of about 340,630 (342)

The Role of Trust and Interaction in GPS Related Accidents: A Human Factors Safety Assessment of the Global Positioning System (GPS) [PDF]

open access: yes, 2008
The Global Positioning System (GPS) uses a network of orbiting and geostationary satellites to calculate the position of a receiver over time. This technology has revolutionised a wide range of safety-critical industries and leisure applications ranging ...
Holloway, C.M., Johnson, C.W., Shea, C.
core  

Microstructure Tuning and Performance Enhancement of Polystyrene Foams via Ball‐Milled Biochar–Induced Nucleation in Supercritical CO2‐Assisted Extrusion

open access: yesJournal of Applied Polymer Science, EarlyView.
Sustainable polystyrene–biochar composite foams produced by supercritical CO2 extrusion with enhanced microstructure, thermal insulation, and compressive performance. ABSTRACT Developing sustainable thermal insulation materials is critical to reducing building energy consumption and greenhouse gas emissions.
Apurv Gaidhani   +4 more
wiley   +1 more source

Spacecraft applications of advanced global positioning system technology [PDF]

open access: yes
The purpose of this study was to evaluate potential uses of Global Positioning System (GPS) in spacecraft applications in the following areas: attitude control and tracking; structural control; traffic control; and time base definition (synchronization).
Austin, Richard   +5 more
core   +1 more source

Animal‐mediated seed dispersal: A review of study methods

open access: yesApplications in Plant Sciences, EarlyView.
Abstract By dispersing seeds, animals provide ecological functions critical for the ecology, evolution, and conservation of plants. We review quantitative and empirical approaches and emerging technologies to quantify processes and patterns of animal‐mediated seed dispersal (zoochory) across its phases: from predispersal to postdispersal.
Noelle G. Beckman   +10 more
wiley   +1 more source

Gravity field information from Gravity Probe-B [PDF]

open access: yes
The Gravity Probe-B Mission will carry the Stanford Gyroscope relativity experiment into orbit in the mid 1990's, as well as a Global Positioning System (GPS) receiver whose tracking data will be used to study the earth gravity field.
Colombo, O. L.   +3 more
core   +1 more source

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

open access: yesThe Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li   +12 more
wiley   +1 more source

Hiding in Plain Sight: Rethinking the Size and Complexity of Iron Age Hillforts in NW Iberia Thanks to Aerial Archaeology and Geophysics

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT This paper tackles one key limitation in the analysis of Iron Age communities in the Northwestern Iberian Peninsula: the limited exploration of areas beyond the fortified settlements known as castros (hillforts). The vast majority of archaeological studies have focused exclusively on the areas inside the walls of these settlements, which are ...
César Parcero‐Oubiña   +7 more
wiley   +1 more source

GPS Signal Simulation in Intermediate Frequency (IF) [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2012
The NAVSTAR Global Positioning System (GPS) is a satellite-based navigation and positioning system which includes a constellation of 32 satellites, remote control stations and its receivers and can be used for determination the geographical positions of ...
Shervin Amiri   +2 more
doaj  

Integrated Inertial/gps [PDF]

open access: yes, 1990
The presence of failures in navigation sensors can cause the determination of an erroneous aircraft state estimate, which includes position, attitude, and their derivatives.
Kline, Paul, Vangraas, Frank
core   +1 more source

A Multisensor Remote Sensing Approach to Archaeological Prospection: Integrating UAV and Google Earth Data in the Bayan Gol Valley, Mongolia

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT This study investigates the effectiveness of drone‐based remote sensing and Google Earth satellite imagery for archaeological prospection in the Bayan Gol Valley, Central Mongolia. Utilizing a fixed‐wing unmanned aerial vehicle (UAV) equipped with RGB and multispectral sensors, we surveyed 655 ha to document Mongol‐period settlement structures
Peter Heimermann   +4 more
wiley   +1 more source

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