TY  - JOUR
A1  - Lehnertz, Klaus
A1  - Ansmann, Gerrit
A1  - Bialonski, Stephan
A1  - Dickten, Henning
A1  - Geier, Christian
A1  - Porz, Stephan
T1  - Evolving networks in the human epileptic brain
JF  - Physica D: Nonlinear Phenomena
N2  - Network theory provides novel concepts that promise an improved characterization of interacting dynamical systems. Within this framework, evolving networks can be considered as being composed of nodes, representing systems, and of time-varying edges, representing interactions between these systems. This approach is highly attractive to further our understanding of the physiological and pathophysiological dynamics in human brain networks. Indeed, there is growing evidence that the epileptic process can be regarded as a large-scale network phenomenon. We here review methodologies for inferring networks from empirical time series and for a characterization of these evolving networks. We summarize recent findings derived from studies that investigate human epileptic brain networks evolving on timescales ranging from few seconds to weeks. We point to possible pitfalls and open issues, and discuss future perspectives.
Y1  - 2014
U6  - https://doi.org/10.1016/j.physd.2013.06.009
SN  - 0167-2789
VL  - 267
SP  - 7
EP  - 15
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Tran, Duc Hung
T1  - Multiple corporate governance attributes and the cost of capital – Evidence from Germany
JF  - The British Accounting Review
N2  - This paper investigates the extent to which corporate governance affects the cost of debt and equity capital of German exchange-listed companies. I examine corporate governance along three dimensions: financial information quality, ownership structure and board structure. The results suggest that firms with high levels of financial transparency and bonus compensations face lower cost of equity. In addition, block ownership is negatively related to firms' cost of equity when the blockholders are other firms, managers or founding-family members. Consistent with the conjecture that agency costs increase with firm size, I find significant cost of debt effects only in the largest German companies. Here, the creditors demand lower cost of debt from firms with block ownerships held by corporations or banks. My findings demonstrate that a uniform set of governance attributes is unlikely to satisfy suppliers of debt and equity capital equally.
Y1  - 2018
U6  - https://doi.org/https://doi.org/10.1016/j.bar.2014.02.003
SN  - 0890-8389
VL  - 46
IS  - 2
SP  - 179
EP  - 197
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Yang, Peng-Fei
A1  - Kriechbaumer, Andreas
A1  - Albracht, Kirsten
A1  - Sanno, Maximilian
A1  - Ganse, Bergita
A1  - Koy, Timmo
A1  - Shang, Peng
A1  - brüggemann, Gert-Peter
A1  - Müller, Lars Peter
A1  - Rittweger, Jörn
T1  - A novel optical approach for assessing in vivo bone segment deformation and its application in muscle-bone relationship studies in humans
JF  - Journal of Orthopaedic Translation
Y1  - 2014
U6  - https://doi.org/10.1016/j.jot.2014.07.078
SN  - 2214-0328
SN  - 2214-031X
VL  - 2
IS  - 4
SP  - 238
EP  - 238
PB  - Elsevier
CY  - Singapore
ER  -