Defining all words in a Japanese dictionary by using a limited number of words (defining vocabulary) is helpful for Japanese children and second-language learners of Japanese. Although some English dictionaries have their own defining vocabulary, no Japanese dictionary has such vocabulary as of yet. As the first step toward building a Japanese defining vocabulary, we ranked Japanese words based...

In this paper, after collecting the rock samples from eight mines and one high way slope, the tests for determination of dry density, Uniaxial Compressive Strength, tensile Strength (Brazilian Test), elastic modulus, Schmidt hammer rebound number have been done on samples. In addition, in order to calculating the mean size of rock grains, quartz content, hardness and abrasivity, a thin sections...

Underground caverns in rock salt deposits are the most secure disposal method and a type of gas-storing facility. Gas storage plays a vital role in ensuring that a strategic relationship is secured between an established energy infrastructure provider and a midstream energy company. The Fischells Brook area is a pillow-shaped body of salts located in the St. George's Bay area of southwest Newfo...

the purpose of this project is the study of the natural gas {methane)steam reforming process through modeling and computer simulation. the operating parameters will be determined and then the? effect of changing these parameters on the conversion and purity of the final products will be studied. using computer simulation. the effect of the change in parameters will be studied along the lenght o...

This study aimed to develop new statistical models for evaluating the specific ampere draw (SI) based on rock brittleness index in rock sawing process. A variety of rocks, including carbonate and granite, were cut by a fully instrumented laboratory-sawing rig with two different types of circular diamond saws. Laboratory tests were performed at different depths of cut and feed rates. Multiple cu...

The rock masses in a construction site of underground cavern are generally not continuous, due to the presence of discontinuities, such as bedding, joints, faults, and fractures. The performance of an underground cavern is principally ruled by the mechanical behaviors of the discontinuities in the vicinity of the cavern. During underground excavation, many surrounding rock failures have close r...

In this paper we investigate the spectrum of super-simple 2-(v, 5, 1) directed designs (or simply super-simple 2-(v, 5, 1)DDs) and also the size of their smallest defining sets. We show that for all v ≡ 1, 5 (mod 10) except v = 5, 15 there exists a super-simple (v, 5, 1)DD. Also for these parameters, except possibly v = 11, 91, there exists a super-simple 2-(v, 5, 1)DD whose smallest defining s...

A Cramer-Rao bound (CRB) study is developed to characterize the information content about scattering parameters that is contained in reflective (R), transmissive (T), and combined R plus T wave scattering data. The analysis is developed for scalar wave scattering systems in onedimensional space, paying particular attention to elastic scatterers, which simplifies the signal model (relative to mo...