Aktive Beziehungen
Name | Geschlecht | Alter | Unternehmensverbindungen | Zusammenarbeit |
---|---|---|---|---|
Ercan Sakarya | M | - | 11 Jahre | |
Durmus Ali Kuzu | M | - | 8 Jahre | |
Murat Sakar | M | 55 | 16 Jahre | |
Adnan Menderes Yayla | M | 61 | 16 Jahre | |
Ali Yilmaz | M | - | 8 Jahre |
Beziehungs-Chart
Beziehungen zu mehreren Unternehmen
Ehemalige Beziehungen
Name | Geschlecht | Alter | Unternehmensverbindungen | Zusammenarbeit |
---|---|---|---|---|
Mehmet Gülesci | M | 62 | 12 Jahre | |
Ali Teoman Kerman | M | - | - | |
Richard Zare | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 7 Jahre |
John E. Dowling | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 8 Jahre |
Paul Mylonas | M | 66 | 6 Jahre | |
Osman Reha Yolalan | M | 63 | - | |
Mustafa Hamdi Gürtin | M | 73 | 6 Jahre | |
Charles Flather | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 8 Jahre |
Kubilay Güler | M | 65 | 13 Jahre | |
Yiannis Vagionitis | M | - | 2 Jahre | |
Eugene F. Daly | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Umut Ülbegi | M | - | 4 Jahre | |
Edward Albert Nassim | M | 78 | - | |
Christos-Alexis Komninos | M | 81 | 5 Jahre | |
Lloyd C. Dahmen | M | 79 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Ismet Kaya Erdem | M | 96 | - | |
Michael Oratis | M | 67 | 2 Jahre | |
Robert L. Beal | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Stokley P. Towles | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Robert S. Abrams | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Demetrios Lefakis | M | 64 | - | |
Lawrence Thompson | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Suekrue Mete Tepegoez | M | - | 5 Jahre | |
William M. Cockrum | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Robert Peter Budetti | M | 79 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Lee A. Freeman | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Anthony J. Medaglia | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Ron Glantz | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Sanford A. Lakoff | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Aytaç Aydin | M | - | 4 Jahre | |
Michael Graves | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 1 Jahre |
Antonios Grammatikopoulos | M | - | 2 Jahre | |
Yagmur Satana | M | 61 | - | |
Georgios Koutsoudakis | M | - | 2 Jahre | |
Frederick H. S. Allen | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Metin Karabiber | M | 63 | 19 Jahre | |
Dimitris Frangetis | M | 73 | 1 Jahre | |
Sam Smith | M | 87 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Roger C. Cohen | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Harvey B. Jacobson | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Jaime Zobel de Ayala | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Erkin Aydin | M | - | - | |
Yiannis Pehlivanidis | M | 71 | - | |
Hakan Alp | M | 56 | 11 Jahre | |
Robert Grosvenor Gardner | M | 98 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 40 Jahre |
Peter Frank Davis | M | 87 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Charles Brown | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
James J. O'Connor | M | 87 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Anthimos C. Thomopoulos | M | 62 | - | |
Gordon Gund | M | 84 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Marvin H. Davidson | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Henry Reynolds Breck | M | 87 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Neil Yost van Horn | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Richard Crystal | M | 83 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Harris Leon Kempner | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Robert Meyer | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 6 Jahre |
Sheldon Bonovitz | M | 86 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Steven Kumble | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Martin Feldstein | M | 84 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Charles W. Coker | M | 90 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 1 Jahre |
John R. Bartels | M | 88 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
John Phelps Ingersoll | M | 93 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
James R. Beery | M | 83 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Robert S. Attiyeh | M | 90 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Murphy Evans | M | 92 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Charles John Christenson | M | 94 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Ferdinand Colloredo-Mansfeld | M | 84 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Stephen A. Greene | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Mortimer Zuckerman | M | 86 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Alan Hirschfield | M | 88 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Gordon Gibson | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Bruno Schröder | M | 91 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 1 Jahre |
Amos B. Hostetter | M | 87 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Paula Hadjisotiriou | F | 67 | - | |
Faik Onur Umut | M | 62 | - | |
Henry J. Aaron | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 1 Jahre |
Stephen J. Friedman | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Alfred D. Youngwood | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Herbert H. Kohl | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Douglass A. Raff | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
William M. Goldstein | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Judah Folkman | M | 90 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Agis Leopoulos | M | - | - | |
René R. Woolcott | M | 92 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
James Irwin Magid | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Russell W. Meyer | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Tim Zagat | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Hüsnü Mustafa Özyegin | M | 80 | 4 Jahre | |
Robert M. Kaplan | M | 87 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 2 Jahre |
Thomas C. Munnell | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Irwin G. Barnet | M | - |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 3 Jahre |
Cosimo Rucellai | M | 90 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 1 Jahre |
Thomas Cable | M | 84 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 4 Jahre |
Shoichi Kajima | M | 93 |
Harvard University
Harvard University Other Consumer ServicesConsumer Services Harvard University engages in the provision of teaching and research. It has twelve degree-granting Schools in addition to the Radcliffe Institute for Advanced Study, offering a global education. The university was founded in 1636 and is headquartered in Cambridge, MA. | 1 Jahre |
Çaglar Sendil | M | - | 4 Jahre |
Statistik
Land | Beziehungen | % des Gesamten |
---|---|---|
Vereinigte Staaten | 66 | 66,00% |
Türkei | 34 | 34,00% |
Alter der Beziehungen
Aktive
Vergangene
Herr
Frau
Aufsichtsräte
Führungskräfte
Ursprung der Beziehungen
- Börse
- Insiders
- Mustafa Aydin Aysan
- Persönliches Netzwerk