Eliyahu Bental Tolchinsky
Keine laufenden Positionen mehr
Beziehungs-Chart
Beziehungen zu mehreren Unternehmen
Ehemalige Beziehungen
| Name | Geschlecht | Alter | Unternehmensverbindungen | Zusammenarbeit |
|---|---|---|---|---|
| Wai Leong Chan | M | 63 |
Cornell University
 Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 6 Jahre |
| Robert F. McCarthy | M | 60 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 6 Jahre |
| Thomas Wolf | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| David Peck | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Jai Menon | M | 60 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Jon Moeller | M | 60 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 6 Jahre |
| Tak Keung Chui | M | 56 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Robert Anthony Catarella | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Andrew E. Jones | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| David Lesser | M | 58 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 6 Jahre |
| Randy Brown | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Greg Husisian | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 7 Jahre |
| Perry Sutaria | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 8 Jahre |
| Michael S. Barclay | M | 57 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 6 Jahre |
| Alok Santosh Oberoi | M | 60 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Michele A. Whitham | F | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 3 Jahre |
| Louis Schott | M | 58 |
Tulane University (Louisiana)
| - |
| David T. Chen | M | 74 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | - |
| Robert W. Monster | M | 57 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 6 Jahre |
| John Carlucci | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 7 Jahre |
| Chay-Kee Tan | M | 55 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Arturo Corpuz | M | 69 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 6 Jahre |
| Tirta Hidayat | M | 65 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Kevin Haley | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Jae Sung Yoon | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Anna Karina Gerochi | F | 56 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Bart Riley | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Kirk Chuen Kee | M | 59 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 6 Jahre |
| Ross Saario | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Andrew Jones | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Scott Sidell | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Carlos Rodriguez | M | - |
Tulane University (Louisiana)
| 5 Jahre |
| Karen Bandeen-Roche | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 3 Jahre |
| James Burke | M | 55 |
Tulane University (Louisiana)
| 6 Jahre |
| Jeffrey Lewis | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Sharlyn C. Heslam | F | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Adam Charles Stettner | M | 60 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 7 Jahre |
| Ronald Mills | M | 51 |
Tulane University (Louisiana)
| 6 Jahre |
| Kevin Strauss | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| John A. Faucher | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 6 Jahre |
| Craig Smith | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Gloria Fu | F | 52 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| David L. Dyckman | M | 59 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Paul Hummel | M | 57 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 7 Jahre |
| Takuo Katayama | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Lawrence Somma | M | 57 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Ken M. Wisdom | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Haftan Eckholdt | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 7 Jahre |
| Martin C. Schulz | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Amit Tandon | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Adam Benjamin | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Dan Devorsetz | M | 53 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Michael Salm | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Anthony Santelli | M | 58 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Kathryn Horgan | F | 58 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Matt R. Miller | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Mary Tagliaferri | M | 58 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| John P. Doucette | M | 58 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Matthew L. Katzeff | M | 54 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Laura Elizabeth Clark | F | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Paul Walker | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Jason Fraser | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Steve Tish | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 2 Jahre |
| Christopher Loop | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| David Laird Smith | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 2 Jahre |
| Adam J. Shapiro | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Michael Krawitz | M | 54 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Todd M. Gershkowitz | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Edward Hurwitz | M | 60 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Adam H. Slutsky | M | 60 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Sandeep Laumas | M | 56 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Jeffrey B. McElroy | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 3 Jahre |
| Beth Levine | F | 60 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Vincent Angotti | M | 56 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Mark Fasciano | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| C. Clarkson Hine | M | 60 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Frank Bruno | M | 59 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Sean Ryan | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 5 Jahre |
| Cristina Greeven Cuomo | F | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Daniel Goldman | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Bryan Colangelo | M | 58 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Gilles Alfred Marchand | M | 60 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 2 Jahre |
| Ammar Hanafi | M | 56 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Ejnar Knudsen | M | 55 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Ben Black | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Doug Burtnick | M | 56 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Stephen Miano | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Marilyn Adler | F | 59 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| David S. Schmidt | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Matthew J. Rubins | M | 55 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| William Joseph Ferri | M | 58 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Russell Gordon | M | 58 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| William Murray Bellamy | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Sandy Khaund | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 6 Jahre |
| Elana Mira Lieberman | F | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| David J. Adler | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Andrew Miller | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Michael D. Schecter | M | 59 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 3 Jahre |
| Jason H. Scott | M | - |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
| Michael Karangelen | M | 55 |
Cornell University
Cornell University Other Consumer ServicesConsumer Services Cornell University is an educational institution that offers undergraduate and post graduate programs. It was founded in 1865 and is based in Ithaca, NY. | 4 Jahre |
Statistik
| Land | Beziehungen | % des Gesamten |
|---|---|---|
| Vereinigte Staaten | 100 | 100,00% |
Alter der Beziehungen
Aktive
Vergangene
Herr
Frau
Aufsichtsräte
Führungskräfte
Ursprung der Beziehungen
- Börse
- Insiders
- Eliyahu Bental Tolchinsky
- Persönliches Netzwerk