Recent earthquakes have shown that tunnels are prone to damage, posing a major threat safety and having cascading socioeconomic impacts. Therefore, reliable models needed for the seismic fragility assessment of underground structures quantitative evaluation expected losses. Based on previous researches, this paper presented probabilistic framework based an artificial neural network (ANN), aimin...

This study aims to identify optimal intensity measures (IMs) for use in probabilistic seismic demand models (PSDMs) circular tunnels soft soil deposits. To this end, we performed an extended numerical parametric involving two-dimensional time history analyses of selected soil-tunnel configurations evaluate the response under transverse shaking. A series 18 IMs were and tested, corresponding fre...

numerous causes are reported for ulnar nerve compression at the wrist, known as guyon's tunnel syndrome. in the present article, a patient with guyon's tunnel syndrome during pregnancy concomitant with an anomaly of ulnar nerve is described. a 29-year-old iranian woman presented with clinical features of guyon's tunnel syndrome (pain and paresthesia in the fifth finger of the left hand and atro...

AIM The aim of this study was to try to find parametric ratios for the diagnosis and pathophysiology of carpal tunnel syndrome using MR. MATERIAL AND METHODS Dominant side wrist MRI examinations of 27 female carpal tunnel patients and 21 normal females were compared. The carpal tunnel contents area / carpal tunnel cross section area ratio was defined, analysed and discussed with the literatur...

Some difficulties are encountered when simulating super-critical Reynolds number (Re) flow over curved surfaces of a building in a low speed boundary layer wind tunnel (BLWT) due to the sensitivity of the flow to Re. Surface roughness on the façade of the cylinder can affect the location of the separation point and the extent of the wake on the leeward face, upon which the wind-induced response...

In this article, an alternative numerical procedure to calculate displacements and stresses of supported circular tunnels is proposed, considering the whole process tunnel advancement, sequential installation primary secondary support systems. derivation, plastic area rock mass divided into a large number annuli around tunnel, then Finite Difference Method employed. First, strain-softening beha...

in this paper, a systematic approach is presented for optimal design of tunnel support lining using two-dimensional finite element analysis models of soil-structure interaction developed in abaqus software and the modified colliding bodies optimization (mcbo) algorithm implemented in matlab environment. this approach is then employed to study the influence of variable geometrical and geo-mechan...

conclusion the anterior tarsal tunnel syndrome is a known disease. a high index of clinical suspicion is required while dealing with the chronic cases. a detailed history to rule out any traumatic event is necessary too. timely investigations and surgical release give dramatic relief. case presentation a 40 -year-old male patient was presented with the history of persistent pain along the dorsa...

How to make IPv4 users utilize IPv6 applications is a typical scenario of the IPv4/IPv6 inter-operation. Nowadays, Tunnel Broker and 6to4 tunnel mechanisms are the popular solutions for this problem. This paper proposes a multihoming based algorithm MI46 to integrate Tunnel Broker and 6to4 tunnel mechanism. It overcomes the shortcomings of both Tunnel Broker and the 6to4 tunnel mechanism to for...