Inter-event time interval analysis of organizational-level activity: Venture capital market case

2019 ◽  
Vol 516 ◽  
pp. 346-355 ◽  
Author(s):  
Xin Zhang ◽  
Sheng Xie ◽  
André L.M. Vilela ◽  
H. Eugene Stanley
2012 ◽  
Vol 37 (1) ◽  
pp. 42-53 ◽  
Author(s):  
Anke Alpermann ◽  
Walter Huber ◽  
Ulrich Natke ◽  
Klaus Willmes

2017 ◽  
Vol 37 (10) ◽  
pp. 3401-3408 ◽  
Author(s):  
Shi Shu ◽  
Li Zhang ◽  
Yi Cheng Zhu ◽  
Fang Li ◽  
Li Ying Cui ◽  
...  

Angiogenesis is a critical compensation route, which has been demonstrated in the brain following ischemic stroke; however, few studies have investigated angiogenesis in chronic intracranial atherosclerosis disease (ICAD). We used 68Ga-NOTA-PRGD2 positron emission tomography/computed tomography based imaging to detect angiogenesis in chronic ICAD and to explore the factors that may have affected it. A total of 21 participants with unilateral severe chronic ICAD were included in the study. Of the 21 participants, 19 were men; the mean (SD) age was 52 (15) years. In 18 participants, we observed elevated 68Ga-NOTA-PRGD2 uptake in the peri-infarct, subcortical, and periventricular regions of the lesioned side, with a higher 68Ga-NOTA-PRGD2 SUVmax compared to that in the contralateral hemisphere (0.15 vs. 0.06, p=0.001). The 18F-FDG PET SUVmax was significantly lower on the lesioned side (11.28 vs. 13.92, p=0.001). Subgroup analyses revealed that the recent group (<6 months) had a higher lesion-to-contralateral region ratio SUVmax than the remote group (>6 months) (6.73 vs. 2.36, p<0.05). Our results provide molecular imaging evidence of angiogenesis in patients with severe chronic ICAD. Furthermore, the extent of angiogenesis in chronic ICAD may be affected by the post-qualified event time interval, and not by infarction itself or the severity of the arterial lesion.


1975 ◽  
Vol 8 (13) ◽  
pp. 1600-1614 ◽  
Author(s):  
S D Hersee ◽  
G W McBeth ◽  
M B Small

2016 ◽  
Vol 12 (12) ◽  
pp. 152 ◽  
Author(s):  
Thi X. A. Tran ◽  
Thi L. A. Nguyen ◽  
Thi H. L. Nguyen

This research aims to use country–level uncertainty avoidance degree to explain the variation of venture capital investing activities across different Asian countries. The analysis of venture capital activity done for 11 Asian countries in period from 2003 to 2012 shows that country-level uncertainty avoidance degree have a significant negative impact on venture capital activity. Specifically, countries with higher degree of uncertainty avoidance degree, has a less developed venture capital market (a smaller-sized market with smaller venture capital deals).


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