this paper presents the effects of different amounts of reclaimed asphalt on fatigue life of asphalt mixtures. central composite method was used to design of experiments based on response surface method (rsm). binder type (pen 60/70 and pen 85/100), reclaimed asphalt pavement (rap) content (25, 50 and 75%) and loading strain (150, 250 and 350 micro strain) were selected as independent variables...

background optimal use of the clinical examination aids physicians in identifying patients at risk for meningitis. the low specificity of the meningeal signs may be due to the presence of cervical arthritis and spondylosis. one of the most sensitive maneuvers in the diagnosis of meningitis is jolt accentuation of headache. patients and methods a descriptive research was performed on suspected a...

in this study to determine whether spine stiffness is predictive of clinical results after lumbar spinal fusion for spinal stenosis, a total of 78 patients were measured intraoperatively with kocher clamp manual distraction technique to determine motion segment stiffness then spinal fusion was performed for any loose segment. ‎statistical analysis revealed that stiffness measurement correlate w...

spherical equivalent (se) has not been linked to increased cardiovascular morbidity. methods: 132 hungarian twins (age 43.3±16.9 years) underwent refraction measurements (huvitz mrk-3100 premium autorefractokeratometer) and oscillometry (tensiomed arteriograph). results: heritability analysis indicated major role for genetic components in the presence of right and left se (82.7%, 95%ci, 62.9 to...

braced frames structures have a good lateral stiffness against earthquakes. however, energy loss of their members is slight and strong forces are given to the structures. moment frames have a more flexible function against earthquakes and also have a better flexibility than braced frames. however, since its lateral stiffness is low, too much displacement of the structure results in an increase ...

this work deals with effects of asymmetric stiffness on the dynamic behaviour of the rotor system. the analysis is presented through an extended lagrangian hamiltonian mechanics on the asymmetric rotor system, where symmetries are broken in terms of the rotor stiffness. the complete dynamics of asymmetries of rotor system is investigated with a case study. in this work, a mathematical model is ...

nonlinear static procedure (nsp) is a common technique to predict seismic demands on various building structures by subjecting a monotonically increasing horizontal loading (pushover) to the structure. therefore, the pushover analysis is an important part of each nsp. accordingly, the current paper aims at investigating the efficiencyof various algorithms of lateral load patterns applied to the...

A novel hand-arm system (HASy), being developed in DLR as an anthropomorphic system, requires as an input parameter the realistic instantaneous joint stiffness of human upper limb in different postures and movements. Because muscles in our musculokeletal system are the active component (actuator), joint stiffness is driven by muscle stiffness. In this thesis, the theoretical fundamentals in ext...

for the nonlinear analysis of structures using the well known newton-raphson method, the tangent stiffness matrices of the elements must be constructed in each iteration. due to the high expense required to find the exact tangent stiffness matrices, researchers have developed novel innovations into the newton-raphson method to reduce the cost and time required by the analysis. in this paper, a ...