Results 31 to 40 of about 269,077 (291)
Effect analysis of bearing and interface dynamics on tool point FRF for chatter stability in machine tools by using a new analytical model for spindle-tool assemblies [PDF]
, 2007 Self-excited vibration of the tool, regenerative chatter, can be predicted and eliminated if the stability lobe diagram of the spindle–holder–tool assembly is known.
Budak, Erhan +4 more
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Warped product Einstein metrics on homogeneous spaces and homogeneous Ricci solitons [PDF]
, 2013 In this paper we consider connections between Ricci solitons and Einstein metrics on homogeneous spaces. We show that a semi-algebraic Ricci soliton admits an Einstein one-dimensional extension if the soliton derivation can be chosen to be normal.
He, Chenxu +2 more
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Revista IBRACON de Estruturas e MateriaisDue to the large increase in the use of precast concrete structures in multistory buildings, this work covers a study on the behavior of beam-column connection with emphasis on the continuity provided by the slab reinforcement. Two prototypes were tested,
M. N. Kataoka +2 more
doaj +1 more source
Bolted connections stiffness of steel trusses for bridge superstructures
Magazine of Civil Engineering, 2022 The article assesses stiffness of main trusses bolted connections in the railway bridges metal superstructures. The generally accepted approach for trusses of bridge structures analysis is to replace joints with hinges.
Valiullin Damir, Chizhov Sergei
doaj +1 more source
Equivalence of Systematic Linear Data Structures and Matrix Rigidity [PDF]
, 2019 Recently, Dvir, Golovnev, and Weinstein have shown that sufficiently strong lower bounds for linear data structures would imply new bounds for rigid matrices.
Natarajan Ramamoorthy, Sivaramakrishnan +1 more
core +2 more sources
Nonlinear stability analysis of non-prismatic simple steel frames with flexible supports and semi-rigid connection [PDF]
Journal of Structural and Construction Engineering, 2020 In this paper, various methods of linear and nonlinear stability analysis of simple steel frames are introduced. In the following, based on moderately large rotations and small strains, nonlinear stability analysis of a non-prismatic simple steel frame ...
mohsen bambaeechee, ghasem Paseban
doaj +1 more source
Static Data Structure Lower Bounds Imply Rigidity
, 2019 We show that static data structure lower bounds in the group (linear) model imply semi-explicit lower bounds on matrix rigidity. In particular, we prove that an explicit lower bound of $t \geq \omega(\log^2 n)$ on the cell-probe complexity of linear data
Agarwal Pankaj K. +9 more
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Molecular Oncology, EarlyView.Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova +25 more
wiley +1 more source
Engineering Structures and Technologies, 2013 Semi rigid mounting joints of glued laminated timber elements are connections that are fully assembled on construction site and capable to handle bending moments, axial and shear forces.
Tomas Gečys +3 more
doaj +1 more source
Experimental Research and Finite Element Modeling of 3-D Semi-Rigid Composite Joints under Proportional Loads [PDF]
, 2009 The behaviour of 2-D composite semi-rigid joints has been researched since the seventies, including experimental work, numerical models, analytical models and practical methods of analysis. However, one of the areas where research is still needed is in
Bayo, E. (Eduardo) +2 more
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