In this paper, we investigate the robust stability problem of a class of LTI discrete uncertain singularly perturbed time-delay systems. If the singular perturbation parameter of these systems is sufficiently small, they can be separated into two reduced-order subsystems, the slow subsystem and fast subsystem. Two stability criteria for the slow and fast subsystem of the uncertain system are th...

Valency in the PDTs For Czech PDT-Vallex http://ufal.mff.cuni.cz/lindat/PDT-Vallex.html For English EngVallex: http://ufal.mff.cuni.cz/lindat/EngVallex.html PDTs (ID -> val. frame) LEXICONS to give: ACT(.1) PAT(.4) ADDR(.3) Valency and MWEs Valency: ability of words to combine themselves with other lexical units FGD Valency theory MWEs: “idiosyncratic interpretations that cross word boundaries...

We present a tool for annotation of se­ mantic inter­sentential discourse rela­ tions on the tectogrammatical layer of the Prague Dependency Treebank (PDT). We present the way of helping the annotators by several useful features implemented in the annotation tool, such as a possibility to combine surface and deep syntactic representation of sen­ tences during the annotation, a possibili­ ty to ...

today, teaching language through the use of technology has become considerably widespread in many countries. the present research aims to investigate the extent to which computer software and new technologies are employed in teaching persian language. in addition, it studies the reasons for success or failure of these tools. the study, which was conducted in a comparative framework, used a rese...

the plain carbon steel “ck45” has relatively well mechanical and metallurgical properties and low cost. the purpose of this research was the property evaluation of this steel on abrasive wear and impact for using in plows and other tillage tools. tillage tool should resist in abrasive wear and impact simultaneously. several heat treatments were done on specimens of this steel. a standard test d...

3D printers are tools utilized to create real 3D samples using the 3D files within your computer. The first feasibility and idea of such tools dates back to 1950. The very first sketch of 3D printers was presented in 1980s called "Rapid Prototyping" and the first sample was developed by Charles Hall and it was recorded with the name of the same scientist. But the current 3D printers were fi...

during the last decade, a high degree of perfection has been achieved in the construction of hydraulic rock drills. these equipments, made for mining and tunnelling, enjoy a good reputation today and may be the only tools of tomorrow. in this paper, the historical development as well as the technical characteristics are described and a comparative study has been made by the table shown in the p...