bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sociocultural Integration in Mergers and Acquisitions: Unresolved Paradoxes and Directions for Future Research
Authors: Stahl Günter K. , Angwin Duncan N. , Very Philippe , Gomes Emanuel , Weber Yaakov , Tarba Shlomo Yedidia , Noorderhaven Niels , Benyamini Haim , Bouckenooghe Dave , Chreim Samia , Durand Muriel , Hassett Mélanie E. , Kokk Gary , Mendenhall Mark E. , Mirc Nicola , Miska Christof , Park Kathleen Marshall , Reynolds Noelia‐Sarah , Rouzies Audrey , Sarala Riikka M. , Seloti Sergio Luis , Søndergaard Mikael , Yildiz H. Emre 
Published: June 2013

AbstractDespite decades of research, the key factors for success in mergers and acquisitions (M&As) and the reasons why M&As often fail remain poorly understood. While attempts to explain M&A success and failure have traditionally focused on strategic and financial factors, an emergent field of inquiry has been directed at the sociocultural and human resources issues involved in the integration of acquired or merging firms. This research has sought to explain M&A performance and underperformance in terms of the impact that variables such as cultural fit, management style similarity, the pattern of dominance between merging firms, the acquirer's degree of cultural tolerance, and the social climate surrounding a takeover have on the postmerger integration process. In this article, we attempt to take stock of, and synthesize, the findings from research on sociocultural and human resources integration in M&A, to identify conflicting perspectives and unresolved questions as well as several underresearched areas, and then use our analyses to propose an agenda for the next stage of research in this field. © 2013 Wiley Periodicals, Inc.
Multiple Levels of Culture and Post M&A Integration: A Suggested Theoretical Framework
Authors: Viegas‐Pires Michaël 
Published: June 2013

AbstractA substantive body of research suggests that cultural differences represent impediments to merger and acquisition (M&A) integration. Yet current findings on the subject differ in terms of the impact of cultural differences. To date, M&A research has failed to capture the diversity of cultural influences that affect merging organizations. This conceptual article addresses this theoretical gap. Its purpose is to suggest a theoretical model of the culture‐integration relationship. This model helps explain the inconsistent results of previous studies, and provides challenging opportunities for future research. © 2013 Wiley Periodicals, Inc.
1, 2,4, 5‐Benzenetetracarboxylate and Bis(pyridyl)‐1, 2,4‐triazolate as Co‐ligands in Zinc(II) Complexes: Synthesis, Crystal Structure, and Luminescence Properties
Authors: Liu Jian‐Fang , Huang Fu‐Ping , Bian He‐Dong , Yu Qing 
Published: June 2013

AbstractBased on 1, 2,4, 5‐benzenetetracarboxylate acid (H4L), and mixed with bis(pyridyl)‐1, 2,4‐triazolate ligands, two novel 3D zinc(II) coordination polymers [Zn3(L)(3, 4′‐bpt)2] (1) [3, 4′‐Hbpt = 1H‐3‐(3‐pyridyl)‐5‐(4‐pyridyl)‐1, 2,4‐triazole] and [Zn4(OH)2(L)(4, 4′‐bpt)2]·2H2O (2) [4, 4′‐Hbpt = 1H‐3, 5‐bis(4‐pyridyl)‐1, 2,4‐triazole] were synthesized and characterized by X‐ray crystallography, elemental analysis, and IR spectroscopy. The topological analysis results reveal that 1 can be simplified to a trinodal (3, 4,10) topology with the short Schläﬂi symbol of (43)(44·62)(418·624·83) and a novel (3, 4,5)‐connected topology with (63)(42·84)(4·63·86) symbol for 2, respectively. Thermogravimetric properties of 1 and 2 were also measured. In addition, the luminescent properties of 1 and 2 were investigated in the solid state at room temperature.
On large‐time energy concentration in solutions to the Navier‐Stokes equations in the whole 3D space
Authors: Skalák Z. 
Published: June 2013

AbstractIn the first part of the paper we study the large‐time behavior of the higher‐order space derivatives of solutions to the Navier‐Stokes equations in ℝ3. Specifically, we show that if w is a nonzero global weak solution to the Navier‐Stokes equations satisfying the strong energy inequality and 0 < α < β < ∞, then there exist C = C(α,β) > 1, δ0 = δ0(α,β) ∈ (0,1) and t0 = t0(α,β) > 0 such that

for every t > t0 and every δ ∈ [0,δ0]. A denotes the Stokes operator and Aβ its powers. In the second part of the paper we derive several consequences of the above inequality concerning the large‐time energy concentration in w; we show, for example, that for any positive ε and α

where a = lim{t → ∞ ||A1/2w(t)||2/||w(t)||2 is a nonnegative real number and F denotes the Fourier transform in L2(ℝ3)3. If 0 < \varepsilonε < a, then
Modeling the saturation process of flows through rigid porous media by the solution of a nonlinear hyperbolic system with one constrained unknown
Authors: Saldanha da Gama R.M. , Pedrosa Filho J.J. , Martins‐Costa M.L. 
Published: June 2013

AbstractThis work proposes a mathematical model to study the filling up of an unsaturated rigid porous medium by a liquid identifying the transition from unsaturated to saturated flow. The mechanical model employs a mixture theory approach – in which the mixture consists of three overlapping continuous constituents, representing the porous matrix (solid constituent), the incompressible fluid (liquid constituent) and an inert gas constituent included to account for its compressibility. The mathematical description gives rise to a nonlinear hyperbolic system in which the fluid fraction must satisfy an inequality – an upper bound – in order to be physically realistic. The model introduced in this work accounts for the physical upper bound of the fluid fraction (and the saturation) that depends on the volume of the pores. The complete solution of a Riemann problem associated to the system of conservation laws satisfying the constraint given by the saturation upper bound is presented.
Non‐linear analysis of moderately thick laminated plates and shell panels under thermo‐mechanical loadings
Authors: Maleki S. , Tahani M. 
Published: June 2013

AbstractNon‐linear bending analysis of moderately thick laminated plates and cylindrical panels with various thermo‐mechanical loadings and boundary conditions is presented using generalized differential quadrature (GDQ) method together with the Newton‐Raphson iterative scheme. Different symmetric and asymmetric lamination sequences together with various combinations of clamped, simply supported and free boundary conditions are considered. Assuming the effects of shear deformation and initial curvature, based on the first‐order shear deformation theory (FSDT) and von Kármán‐type of geometric non‐linearity, the governing system of equations is obtained. This system includes thirteen non‐linear partial differential equations (PDEs) in terms of unknown displacements, rotations, forces and moments. The solution domain, governing equations and related boundary conditions are then discretized based on the GDQ technique. It is observed that the method provides reasonably accurate results with relatively small number of grid points. Comparisons of the predictions with results of finite element analyses show very good agreement. More results for panels with particular boundary conditions are presented for future references.
Bilinear control of Toeplitz formations
Authors: Rüppel F. , Helmke U. 
Published: June 2013

AbstractWe investigate controllability properties of bilinear control systems, defined by classes of Toeplitz matrices. It is shown that the Lie algebra of all pseudo‐circulant matrices coincides with the full matrix Lie algebra. This implies the controllability of associated bilinear control systems. As a by‐product we deduce that every complex invertible matrix is the finite product of invertible Toeplitz matrices; moreover, every complex unitary matrix is shown to be a finite product of complex unitary Toeplitz matrices.
Asymptotic analysis of 3‐D thin piezoelectric rods
Authors: Leugering G. , Nazarov S.A. , Slutskij A.S. 
Published: June 2013

AbstractWe derive an asymptotic one‐dimensional model of a thin piezoelectric rod by means of a dimension reduction procedure. The rod is made from a heterogeneous material with a possibly varying cross‐section and distorted ends. Asymptotically exact error estimates are derived. Representation formulas for effective moduli are established and, for a concrete piezoelectric material, we provide an explicit form.
Parameter re‐identification in nanoindentation problems of viscoelastic polymer layers: small deformation
Authors: Chen Z. , Diebels S. 
Published: June 2013

AbstractRecently, nanoindentation became a new but all the same a primary testing technique of thin layers. A wide application of nanoindentation in polymeric layers is obstructed by the analysis method, which is used to extract the rate‐dependent properties. In the present paper, the inverse method based on the finite element simulation and numerical optimisation is used to characterise the viscoelastic properties of polymers from nanoindentation. First of all, the boundary value problems using nanoindentation of polymer layers considering real geometry, is simulated with the FE code ABAQUS®. A linear viscoelastic model for small strain, based on a general Maxwell rheological model is currently applied to describe the rate‐dependent material behaviour. The rate‐dependent properties of the polymer layer under nanoindentation is investigated with various loading histories: cyclic testing, single step relaxation, monotonic testing, and sinusoidal oscillatory testing. A parameter re‐identification strategy offers a deep insight into the relationship between the accuracy of identification and the loading history associated with the rate‐dependent material model. A method to choose a suitable loading history to identify the parameters more accurately is recommended.
Buckling analysis of sandwich plates with functionally graded skins using a new quasi‐3D hyperbolic sine shear deformation theory and collocation with radial basis functions
Authors: Neves A.M.A. , Ferreira A.J.M. , Carrera E. , Cinefra M. , Jorge R.M.N. , Soares C.M.M. 
Published: June 2013

AbstractA hyperbolic sine shear deformation theory is used for the linear buckling analysis of functionally graded plates. The theory accounts for through‐the‐thickness deformations. The buckling governing equations and boundary conditions are derived using Carrera's Unified Formulation and further interpolated by collocation with radial basis functions. The collocation method is truly meshless, allowing a fast and simple discretization of equations in the domain and on the boundary. A numerical investigation has been conducted considering and neglecting the thickness stretching effects on the buckling of sandwich plates with functionally graded skins. Numerical results demonstrate the high accuracy of the present approach.
Spectral WENO schemes with Adaptive Mesh Refinement for models of polydisperse sedimentation
Authors: Bürger R. , Mulet P. , Villada L.M. 
Published: June 2013

AbstractThe sedimentation of a polydisperse suspension with particles belonging to N size classes (species) can be described by a system of N nonlinear, strongly coupled scalar first‐order conservation laws. Its solutions usually exhibit kinematic shocks separating areas of different composition. Based on the so‐called secular equation [J. Anderson, Lin. Alg. Appl. 246, 49–70 (1996)], which provides access to the spectral decomposition of the Jacobian of the flux vector for this class of models, Bürger et al. [J. Comput. Phys. 230, 2322–2344 (2011)] proposed a spectral weighted essentially non‐oscillatory (WENO) scheme for the numerical solution of the model. It is demonstrated that the efficiency of this scheme can be improved by the technique of Adaptive Mesh Refinement (AMR), which concentrates computational effort on zones of strong variation. Numerical experiments for the cases N = 4 and N = 7 are presented.
An infinite element for the solution of Galbrun equation
Authors: Retka S. , Marburg S. 
Published: June 2013

AbstractIn this article we present a method for the three‐dimensional numerical simulation of the propagation of acoustic radiation inside and in the near field of long, slender, and hollow objects. While the fluid inside and close to the radiating body is meshed by Taylor‐Hood tetrahedral finite elements, complex conjugated Astley‐Leis infinite elements are added on the outer finite element boundary to present the effects in the far field. Flow is considered in the modal analysis, with the goal to determine the influence a moving fluid has on the eigenfrequencies of the model. Galbrun equation in a mixed, meaning pressure and displacement based, formulation is used for the numerical realization and its weak form is presented for the finite element domain as well as for the infinite element domain.
Localized vibrations of a thin‐walled structure consisted of orthotropic elastic non‐closed cylindrical shells with free and rigid‐clamped edge generators
Authors: Ghulghazaryan G.R. , Ghulghazaryan R.G. , Srapionyan Dg.L. 
Published: June 2013

AbstractThe problem of existence of localized natural vibrations of an elastic orthotropic solid thin‐walled structure consisted of identical circular non‐closed infinite (finite) cylindrical shells with free and rigid‐clamped boundary conditions at the edge generators is studied. In the case of finite cylindrical shells the boundary directional curves are hinge‐mounted. Using the system of equations of the related classical theory of orthotropic cylindrical shells, dispersion equations, and asymptotic formulae for determining the eigenfrequencies of possible vibration types of the corresponding thin‐walled structures are derived. An algorithm for separating the possible vibrations is presented. Approximate values of dimensionless characteristics of eigenfrequencies and damping characteristics of the related vibration forms are given for the cases of orthotropic solid thin‐walled structures constructed of different number of identical circular non‐closed finite cylindrical shells. Comparative study of the approximate method given in this paper with the Abramov's method of transfer with orthogonalization confirmed the correctness and effectiveness of the approximate method.
On Cosserat–Bingham fluids
Authors: Shelukhin V.V. , Ružička M. 
Published: June 2013

AbstractWe formulate constitutive laws for micro‐polar visco‐plastic fluids which support yield stresses. The material is shown to be a generalization of Bingham and Herschel–Bulkley fluids in which local micro‐rotations are taken into account. In contrast to the classical visco‐plastic fluids, micro‐polar visco‐plastic fluids support two types of plug zones. To illustrate the derived equations, we consider a pressure driven flow between two parallel planes.
Multi‐scale modelling of elastic/viscoelastic compounds
Authors: Schüler T. , Manke R. , Jänicke R. , Radenberg M. , Steeb H. 
Published: June 2013

AbstractThe present contribution is concerned with the requirements of an efficient multi‐scale modelling approach for elastic/viscoelastic compounds such as bituminous asphalt concrete. Typically, this heterogeneous composite material consist of a mineral filler (e.g. crushed rock), a bituminous binding agent, pores and further additives. The contrast in stiffness between the different is extremely high and accounts for several orders of magnitude. Prediction of effective mechanical properties of such complex materials on the macroscopic level requires a detailed knowledge of the micro‐scale behaviour of the particular constituents. In this study, we will focus on modelling aspects due to upscaling routines based on volume averaging. Particularly, we will show that the choice of micro‐level boundary conditions not only influences the effective stiffness of the viscoelastic substitute material (upper/lower limit), but also the viscous contribution to the macro‐model (shift of maximal attenuation in frequency space). In order to study these fundamental homogenization properties, we introduce a simplified compound consisting of homogeneous viscoelastic binder phase and spherical filler particles with a volume fraction low compared to realistic asphalt concrete. Depending on the chosen boundary condition, stress‐relaxation and creep tests are considered. After transformation of the effective stress‐strain‐relations from time‐ to frequency space, the viscoelastic properties of the compound will be discussed in frequency domain.
Limiting behavior of MHD flow over a porous rotating disk with Hall currents
Authors: EL‐Mistikawy T.M.A. , El‐Fayez F.M.N. 
Published: June 2013

AbstractAn electrically conducting fluid is driven by a rotating disk, in the presence of a magnetic field that is strong enough to produce significant Hall currents. The disk is porous, allowing mass transfer through suction or injection. The limiting behavior of the flow is studied, as the magnetic field strength grows indefinitely. The flow variables are properly scaled, and uniformly valid asymptotic expansions of the velocity components are obtained through parameter straining. The leading order approximations show sinusoidal behavior that is decaying exponentially, as we move away from the disk surface. The two‐term expansions of the radial and azimuthal surface shear stress components, as well as the far field inflow speed, compare well with the corresponding finite difference solutions; even at moderate magnetic fields.
Numerical evidence for the validity of the NLS approximation in systems with a quasilinear quadratic nonlinearity
Authors: Chong C. , Schneider G. 
Published: June 2013

AbstractThe Nonlinear Schrödinger (NLS) equation is a universal amplitude equation which can be derived for the description of small spatio‐temporal modulations of an underlying carrier wave. The validity of this approximation for general dispersive wave systems possessing a quasilinear quadratic nonlinearity is an open problem that has remained unsolved for more than four decades. We report results on a systematic numerical simulation of such a quasilinear wave equation which strongly support the validity claim.
High precision modeling towards the 10‐20 level
Authors: Stephan E.P. , Andres M. , Banz L. , Costea A. , Nesemann L. , Lämmerzahl C. , Hackmann E. , Herrmann S. , Rievers B. 
Published: June 2013

AbstractThe requirements for accurate numerical simulations are increasing steadily. Modern high precision physics experiments now exceed the achievable numerical accuracy of standard commercial and scientific simulation tools. One example are optical resonators for which changes in the optical length are now commonly measured to 10‐15 precision. The achievable measurement accuracy for resonators and cavities is directly influenced by changes in the distances between the optical components. If deformations in the range of 10‐15 occur, those effects cannot be modeled and analyzed anymore with standard methods based on double precision data types. New experimental approaches point out that the achievable experimental accuracies may improve up to the level of 10‐17 in the near future. For the development and improvement of high precision resonators and the analysis of experimental data, new methods have to be developed which enable the needed level of simulation accuracy. Therefore we plan the development of new high precision algorithms for the simulation and modeling of thermo‐mechanical effects with an achievable accuracy of 10‐20. In this paper we analyze a test case and identify the problems on the way to this goal.
Analysis of a dynamic electro‐elastic problem
Authors: Barboteu M. , Kazmi K. , Sofonea M. , Han W. 
Published: June 2013

AbstractWe study a dynamic problem for linearly electro‐elastic materials, permitting piezoelectric effects. As a theoretical result, we state and prove the existence of a unique solution to the problem by using arguments of semi‐linear evolutionary equations and semigroups of linear continuous operators. Then we introduce a fully discrete scheme to solve the problem numerically. Under certain solution regularity assumptions, we derive an optimal order error estimate. Finally, we present some numerical results on a two‐dimensional test problem to illustrate the theoretical error estimate.
Large amplitude free vibration analysis of square plates resting on elastic foundation: A simple closed‐form solutions
Authors: Gunda J.B. 
Published: June 2013

AbstractLarge amplitude free vibration behavior of thin, isotropic square plate configurations resting on Winkler type of elastic foundation are expressed in the form of simple closed‐form solutions by using the Rayleigh‐Ritz (R‐R) method based on coupled displacement fields (CDF). Geometric non‐linearity of von‐Kármán type is taken into consideration. The in‐plane displacement field variations used in the formulation of the R‐R (CDF) method are derived by using the governing in‐plane static differential equations of the plate which in turn simplifies the difficulty of assuming an in‐plane displacement field variations of the plate. Accuracy and robustness of proposed closed‐form solutions is compared to the available finite element formulation results. Proposed closed‐form solutions are corrected for the simple harmonic motion (SHM) assumption using the well established harmonic balance method (HBM) which is applicable for the homogeneous form of cubic non‐linear Duffing equation.
Analytical length scale calibration of nonlocal continuum from a microstructured buckling model
Authors: Challamel N. , Lerbet J. , Wang C.M. , Zhang Z. 
Published: June 2013

AbstractThis paper deals with the buckling of a column which is modeled by some finite rigid segments and elastic rotational springs and relating its solution to continuum nonlocal elasticity. This problem, which can be referred to Hencky's chain, can serve as a basic model to rigorously investigate the effect of the microstructure on the buckling behaviour of a simple equivalent continuum structural model. The buckling problem of the pinned‐pinned discretized column is analytically investigated by introducing a Lagrange multiplier. Such a buckling problem is mathematically treated as an iterative eigenvalue problem. It is shown that the buckling load of this finite degree‐of‐freedom system is exactly obtained by a recursive formula involving Chebyschev polynomials. Euler's buckling load is asymptotically obtained at larger scales. However, at smaller scales, the buckling model highlights some scale effect that can be only captured by nonlocal elasticity for the equivalent continuum. We show that Eringen's nonlocal continuum is well suited to capture this scale effect. The small scale coefficient of the equivalent nonlocal continuum is then identified from the specific microstructure features, namely the length of each cell. It is shown that the small length scale coefficient valid for this buckling problem is very close to the one already identified from a comparison with the Born‐Kármán model of lattice dynamics using dispersive wave properties.
Spatial decay for several phase‐field models
Authors: Miranville A. , Quintanilla R. 
Published: June 2013

AbstractIn this paper, we study the spatial behavior of three phase‐field models. First, we consider the Cahn‐Hilliard equation and we obtain the exponential decay of solutions under suitable assumptions on the data. Then, for the classical isothermal phase‐field equation (i.e., the Allen‐Cahn equation), we prove the nonexistence and the fast decay of solutions and, for the nonisothermal case governed by the Fourier law, we obtain a Phragmén‐Lindelöf alternative of exponential type, respectively.
On the singular limit of a two‐phase flow equation with heterogeneities and dynamic capillary pressure
Authors: Kissling F. , Karlsen K.H. 
Published: June 2013

AbstractWe consider conservation laws with spatially discontinuous flux that are perturbed by diffusion and dispersion terms. These equations arise in a theory of two‐phase flow in porous media that includes rate‐dependent (dynamic) capillary pressure and spatial heterogeneities. We investigate the singular limit as the diffusion and dispersion parameters tend to zero, showing strong convergence towards a weak solution of the limit conservation law.