نتایج جستجو برای: random rail irregularities
تعداد نتایج: 298521 فیلتر نتایج به سال:
in this paper effects of fractured sleepers on rail track vibration under moving wheelset have been investigated. two parallel rails of the track have been modeled as euler-bernoulli beams on elastic points as rail pads. also sleepers have been modeled as visco-elastic euler-bernoulli beams. it is assumed that, some sleepers under the rail track have been fractured and modeled by two beams. the...
A large percentage of the railway bridges in the UK rail network and around Europe are of riveted construction exceeding in many cases 100 years of age. The remaining fatigue life of these bridges is difficult to estimate due to the uncertainties regarding the fatigue behaviour of wrought-iron and older steel material, which was used for their construction, as well as the actual loading and the...
Recent research has shown that cryptographers with glitches are vulnerable in front of Side Channel Attacks (SCA). Since then, several methods, such as Wave Dynamic Differential Logic (WDDL) and Masked Dual-Rail Pre-charge Logic (MDPL), have been presented to make circuits clean. In this paper, we propose a more accurate power model based on logic gates’ output transitions and divide it into pi...
Acording to the World Health Organization, hormonal contraception as a means of isincreasing sharply. The most use isinjectable contraceptives, whichis 38.3% and pills much 27.7% implants 23.6%. body weight, hypertension menstrual cycle irregularities with duration contraceptive injections for 3 months at UPTD Daya Utama Center, Banyuasin Regency in 2021. This type research used an analytic sur...
This paper presents an in-depth case study in highperformance asynchronous adder design. A recent method, called “speculative completion”, is used. This method uses single-rail bundled datapaths but also allows early completion. Five new dynamic designs are presented for BrentKung and Carry-Bypass adders. Furthermore, two new architectures are introduced, which target (i) small number addition,...
The paper deals with the statistical inverse problem for the identification of a nonGaussian tensor-valued random field in high stochastic dimension. Such a random field can represent the parameter of a boundary value problem (BVP). The available experimental data, which correspond to observations, can be partial and limited. A general methodology and some algorithms are presented including som...
This paper deals with the threshold radius that warrants the use of single restraining rail for transit and railroads. Different railways use different threshold radius from 91m to 365m to provide restraining rail. These threshold figures are probably experience driven choices. The need for restraining rail may be related to a so-called derailment alarm coefficient of 1.2 sustained over 2m leng...
7 This paper proposes a three-stage game-theoretic model to study air-rail competition in intercity 8 passenger corridors. We consider duopolistic markets, in which a rail agency competes against an airline to 9 maximize their respective objectives. The objective of the rail agency can be maximizing profit or social welfare, 10 or a mix of the two. At the top stage, the rail agency first determ...
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