SU-C-BRA-05: Enhancement of Lung Tumors Detectibility during Gantry Rotation Using Iterative Principal Component Analysis Methodology

2012 ◽  
Vol 39 (6Part2) ◽  
pp. 3603-3603
Author(s):  
R Sandhu ◽  
J Kim ◽  
T Zhang ◽  
D Yan ◽  
L Zhuang ◽  
...  
IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 62675-62686 ◽  
Author(s):  
Baosu Guo ◽  
Zhuo Liang ◽  
Qingjin Peng ◽  
Yongxin Li ◽  
Fenghe Wu

SAGE Open ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 215824402110030
Author(s):  
Nawab Khan ◽  
Haitao Qu ◽  
Jing Qu ◽  
ChunMiao Wei ◽  
Shihao Wang

This article examines venture capital composite impact on innovation. For this purpose, we made venture capital index using principal component analysis methodology to test the composite impact of venture capital impact on innovation. We constructed our sample of 41 countries on the basis of venture capital fundraising from 2006 to 2016. First, we empirically tested index individual component, for which we used ordinary least square regression with robust standard error. In the second stage, we made VC index using principal component analysis methodology to analyze the composite effect of VC on patents generation. Empirical results show strong significant venture capital investment impact on patents generations. Overall, our findings suggest that venture capital investment significantly spur innovation, when we analyzed the individual factors of the index as well as compositely. These results encourage governments and policy makers to promote innovation through facilitating venture capital investment which provide an alternative source of finance to startups which find hard to raise fund in conventional fund market. This also suggest that policy maker should consider the composite effect of the venture capital in an economy to robustly encourage innovation.


VASA ◽  
2012 ◽  
Vol 41 (5) ◽  
pp. 333-342 ◽  
Author(s):  
Kirchberger ◽  
Finger ◽  
Müller-Bühl

Background: The Intermittent Claudication Questionnaire (ICQ) is a short questionnaire for the assessment of health-related quality of life (HRQOL) in patients with intermittent claudication (IC). The objective of this study was to translate the ICQ into German and to investigate the psychometric properties of the German ICQ version in patients with IC. Patients and methods: The original English version was translated using a forward-backward method. The resulting German version was reviewed by the author of the original version and an experienced clinician. Finally, it was tested for clarity with 5 German patients with IC. A sample of 81 patients were administered the German ICQ. The sample consisted of 58.0 % male patients with a median age of 71 years and a median IC duration of 36 months. Test of feasibility included completeness of questionnaires, completion time, and ratings of clarity, length and relevance. Reliability was assessed through a retest in 13 patients at 14 days, and analysis of Cronbach’s alpha for internal consistency. Construct validity was investigated using principal component analysis. Concurrent validity was assessed by correlating the ICQ scores with the Short Form 36 Health Survey (SF-36) as well as clinical measures. Results: The ICQ was completely filled in by 73 subjects (90.1 %) with an average completion time of 6.3 minutes. Cronbach’s alpha coefficient reached 0.75. Intra-class correlation for test-retest reliability was r = 0.88. Principal component analysis resulted in a 3 factor solution. The first factor explained 51.5 of the total variation and all items had loadings of at least 0.65 on it. The ICQ was significantly associated with the SF-36 and treadmill-walking distances whereas no association was found for resting ABPI. Conclusions: The German version of the ICQ demonstrated good feasibility, satisfactory reliability and good validity. Responsiveness should be investigated in further validation studies.


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