In this paper, the impact of vehicles in road tunnel on smoke spread in case of fire is illustrated using the FDS (Fire Dynamics Simulator) system. FDS is a CFD-based fire field model capable to simulate fire in various environments capturing a big variety of physical processes related to fire. A set of simulations of fire in a 300 m long two-lane single directional road tunnel with longitudina...

Particle physics is an exciting subject for high school students, and there have been various approaches on how to introduce the topic in classroom. Feynman diagrams (FDs) are often-used form of representation particle could play important role such introduction. However, their potential educational value has not yet investigated. To this end, we interviewed four experts field education opportu...

Korea’s first lunar mission, the Korea Pathfinder Lunar Orbiter (KPLO), aims to launch in mid-2022 via Space-X Falcon-9 vehicle. For successful flight operation of KPLO, Aerospace Research Institute (KARI) has designed and developed Flight Dynamics Subsystem (FDS). FDS is one subsystems KPLO Deep-Space Ground System (KDGS), which responsible for overall dynamics-related operation. currently suc...

A bstract We compare a state-of-the-art terahertz (THz) time domain spectroscopy (TDS) system and novel optoelectronic frequency (FDS) with respect to their performance in layer thickness measurements. use equal sample sets, THz optics, data evaluation methods for both spectrometers. On single-layer multi-layer dielectric samples, we found standard deviation of measurements below 0.2 µm TDS 0.5...

The objective of this study was to define the biomechanical properties of the human digital flexor tendons and to compare these biomechanical properties to other muscle-tendon units in the forearm. Mechanical measurements were performed on fresh-frozen tendons under physiological load and temperature conditions. Loads were determined by first measuring the physiological cross-sectional area of ...

BACKGROUND Emissions from solid fuels used for cooking cause ~4 million premature deaths per year. Advanced solid-fuel cookstoves are a potential solution, but they should be assessed by appropriate performance indicators, including biological effects. OBJECTIVE We evaluated two categories of solid-fuel cookstoves for eight pollutant and four mutagenicity emission factors, correlated the muta...

The dexterity of the human hand depends largely on the ability to move the fingers independently, the execution of which requires the coordination of multiple muscles. How these muscle ensembles are recruited by the central nervous system is not clear. Therefore, the objective of this dissertation was to identify some of the neural mechanisms whereby certain hand muscles are recruited into func...

REFERENCES 17 times faster than Schlimmer's algorithm. Even without any bound on the length of the FDs it is still eight times faster and it uses a database. We conjecture, that this interesting but also unexpected result is mainly caused by the distinction between the three types of attributes in the search for functional dependencies. But of course the two domains above are not typical databa...

The retrieval of nutrient concentration in sugarcane through hyperspectral remote sensing is widely known to be affected by canopy architecture. The goal of this research was to develop an estimation model that could explain the nitrogen variations in sugarcane with combined cultivars. Reflectance spectra were measured over the sugarcane canopy using a field spectroradiometer. The models were c...