321 research outputs found
Construction of Global Solutions to the Linearized Field Equations for Causal Variational Principles
We give a novel construction of global solutions to the linearized field
equations for causal variational principles. The method is to glue together
local solutions supported in lens-shaped regions. As applications, causal
Green's operators and cone structures are introduced.Comment: 19 pages, LaTeX, 3 figures, smaller improvements (published version
Curvature Estimates in Asymptotically Flat Lorentzian Manifolds
We consider an asymptotically flat Lorentzian manifold of dimension (1,3). An
inequality is derived which bounds the Riemannian curvature tensor in terms of
the ADM energy in the general case with second fundamental form. The inequality
quantifies in which sense the Lorentzian manifold becomes flat in the limit
when the ADM energy tends to zero.Comment: 15 pages (published version
The Theoretical Embedding Of Born Globals: Challenging Existing Internationalization Theories
This article examines the embedding of the phenomenon of Born Globals into three existing theories of the firm. The model of Born Globals deals with young companies that begin shortly after their foundation to internationalize. The Uppsala Internationalization Model helps to delimit the concept of Born Globals from existing internationalization models and to highlight their special features. The resource-based view takes up the integration of knowledge as the key resource of Born Globals and explains the underlying mechanism with which a company achieves a sustainable competitive advantage from a bundle of resources. The knowledge-based view is concerned with the generation of knowledge and explains the learning processes that are performed by the entrepreneur. A recurring theme could be identified and contains the following elements which interconnect the three theories of the firm with the concept of Born Globals - knowledge as a key resource, learning, and integration of knowledge into organizations
Transfer of Statistical Customer Data into Relevant Parameters for the Design of Vehicle Drive Systems
Transfer of Statistical Customer Data into Relevant Parameters for the Design of Vehicle Drive Systems
Drivers of internationalization success:a conjoint choice experiment on German SME managers
Internationalization is a common growth strategy for small and medium-sized enterprises (SMEs). However, SMEs face several challenges within the internationalization process. As SMEs are characterized by limited resources, managers are constantly involved in a decision-making process concerning the allocation of the SMEs' resources. Therefore, internationalization can be understood as a complex, multidimensional decision process. Based on a set of 2244 internationalization decisions made by German SME managers, the present study examines how eight strategic and structural factors drive the perceived international success of SMEs. When applying conjoint choice analysis, the results suggest that especially equity financing in the internationalization process, an appropriate market selection as well as proactive motives, and a long-term scope can drive SMEs' international success. Moreover, it becomes evident that strategic factors are more relevant for successful internationalization than structural factors
How Does DeāGlobalization affect location decisions? A Study of managerial perceptions of risk and return
Our understanding of how managers take international location decisions is still scarce. Building on the microfoundations view, we explore managersā perceptions of risk and return in a discrete choice experiment with 2,618 decisions in 2013 (a globalizing world) and 2017 (a deāglobalizing world). While managerial perceptions vary over time due to economic and political changes, such as the current deāglobalization trend, decision heuristics remain remarkably stable: locations perceived as least risky offer the highest expected returns. We also find that distance is a good proxy for managerial perceptions. Investigating the microfoundations of decisionāmaking we show that international experience, riskātaking propensity and shareholder status affect heuristics. In sum, our study provides novel insights into the microfoundations of location decisions and extends the behavioral perspective on internationalization
Europium cyclooctatetraene nanowire carpets: A low-dimensional, organometallic, and ferromagnetic insulator
We investigate the magnetic and electronic properties of europium cyclooctatetraene (EuCot) nanowires by means of low-temperature X-ray magnetic circular dichroism (XMCD) and scanning tunneling microscopy (STM) and spectroscopy (STS). The EuCot nanowires are prepared in situ on a graphene surface. STS measurements identify EuCot as an insulator with a minority band gap of 2.3 eV. By means of Eu M5,4 edge XMCD, orbital and spin magnetic moments of (ā0.1 Ā± 0.3)Ī¼B and (+7.0 Ā± 0.6)Ī¼B, respectively, were determined. Field-dependent measurements of the XMCD signal at the Eu M5 edge show hysteresis for grazing X-ray incidence at 5 K, thus confirming EuCot as a ferromagnetic material. Our density functional theory calculations reproduce the experimentally observed minority band gap. Modeling the experimental results theoretically, we find that the effective interatomic exchange interaction between Eu atoms is on the order of millielectronvolts, that magnetocrystalline anisotropy energy is roughly half as big, and that dipolar energy is approximately ten times lower
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