نتایج جستجو برای: sleeper pads
تعداد نتایج: 5111 فیلتر نتایج به سال:
The sleeper effect in persuasion is a delayed increase in the impact of a message that is accompanied by a discounting cue. Despite a long history, the sleeper effect has been notoriously difficult to obtain or to replicate, with the exception of a pair of studies by Gruder et al. (1978). We conducted a series of 16 computer-controlled experiments and a replication of the Gruder et al. study to...
AIM The purpose of this study was to investigate whether there is a difference in pain and distress response of the child when using two different computer-controlled local analgesic delivery systems, the Sleeper One(®) and the WAND(®), and whether this was influenced by the anxiety level of the child. METHODS This randomised controlled trial was conducted among 112 children (56 girls) aged 4...
The aim of the study is to select rational axle loads rolling stock and establish conditions for their circulation on railways Republic Uzbekistan. In this work, research has been carried out assess indicators stress-strain state rail track elements from action with various axial loads. dynamic wheel rail, tensile stresses at edges foot, in wooden sleepers (rubber under-rail pads reinforced con...
The latest advancements in computer games offer a domain of human and artificial agent behaviour well suited for analysis and development based on normative multi agent systems research. One of the most influential gaming trends today, Massively Multi Online Role Playing Games (MMORPG), poses new questions about the interaction between the players in the game. If we model the players and groups...
Lateral resistance of railway track is one of the most important parameters in lateral stability. This parameter depends!on the conditions of different components of ballasted railway track (such as density of ballast layer, sleeper spacing, type of sleeper, etc.). From this perspective, type of sleeper has an important effect on lateral resistance. However in some conditions, in technical and ...
During the last decades, the railway traffic in densely populated areas has increased. At the same time, passenger trains have become faster and freight trains have become heavier. Consequently, trains are an increasing source of ground vibration, which may be a nuisance to people, buildings and sensitive equipment. In this research, a two-dimensional dynamic system, including underground train...
A naturally short sleeper phenotype with a sleep need of less than 6 hours without negative impact on health or performance is rare. We present a case of an acquired short sleeper phenotype after third ventriculostomy. A 59-year-old patient suffering from chronic hydrocephalus reported an average of 7-8 h of nocturnal sleep. After surgical intervention, the patient noted a strikingly reduced sl...
investigation of the influences of track superstructure parameters on ballasted railway track design
the main design criteria of ballasted railway tracks include rail deflections, rail bending stresses, rail wheel contact stresses, sleeper bending moments and ballast sleeper contact pressures. numerous criteria have been defined for the design of ballasted railway tracks owing to the various mechanical properties of track components and their complex interaction. therefore, railway track desig...
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