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Kangshen Xiang, Weijie Chen, Siddiqui Aneeb and Weiyang Qiao
Future UHBR (Ultra-High Bypass-Ratio) engines might cause serious ?turbine noise storms? but, at present, turbine noise prediction capability is lacking. The large turning angle of the turbine blade is the first major factor deserving special attention. ...
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Dascha Dobrovolskij and Katja Schladitz
Ultrasonic testing of polycrystalline media relies heavily on simulation of the expected signals in order to detect and correctly interpret deviations due to defects. Many effects disturb ultrasonic waves propagating in polycrystalline media. One of them...
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Junfang Li, Mingqian Liu, Ningjie Tang and Bodong Shang
Signal-to-noise ratio (SNR) estimation is essential in the unmanned aerial vehicle (UAV) orthogonal frequency division multiplexing (OFDM) system for getting accurate channel estimation. In this paper, we propose a novel non-data-aided (NDA) SNR estimati...
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Xudong Liu, Yongzhong Tian, Xueqian Zhang and Zuyi Wan
Overall scientific planning of urbanization layout is an important component of the new period of land spatial planning policies. Defining the main functions of different spaces and dividing urban functional areas are of great significance for optimizing...
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Sara Delle Macchie, Simone Secchi and Gianfranco Cellai
This paper reports the acoustic issues of open plan office environments. According to a detailed research based on the scientific literature of the most suitable acoustic descriptors recommended for the open plan offices analysis, the main typological-fu...
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Gila Burde
Using hazard analysis procedures, this study undertakes a longitudinal examination of Israeli Nonprofit Organizations? (NPOs?) financial vulnerability arising from governmental funding instability. Funding instability is characterized by time-at-risk, wh...
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Mehmet Baran,Sitki Sönmezer
Pág. 13 - 19
Grouping may be an obstacle itself or it may have to be improved to extract better information out of a data stream. Finding trends and dividing a population into parts may be crucial for analyses. This paper offers a modified version of Fisher method th...
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Sebastião do Amaral Machado,Luis César Rodrigues da Silva,Marco Aurélio Figura,Saulo Jorge Téo,Rodrigo Geroni Mendes Nascimento
Pág. 45 - 55
The objective of this research was to compare actual heights at known ages with those estimated by the methods proposed by Graves (1906), Carmean (1972), Lenhart (1972), Newberry (1978), and the Ratio and Graphic methods, in order to identify the most ac...
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