scholarly journals Invitation to the World of the Plasma for Light Source 3.Light Source Measurement 3.3 Density Measurement Methods for Light Source Plasma

2005 ◽  
Vol 81 (11) ◽  
pp. 926-928
Author(s):  
Motohiro SAKAI ◽  
Yoshinori AIURA
2020 ◽  
Vol 13 (12) ◽  
pp. 327
Author(s):  
Avi Perez

There are two different forms of property tax systems: value-based tax, which is used in most countries of the world, and area-based tax, which is used mainly in Central and Eastern Europe and developing countries in Africa. Area-based property tax provides more stable and predictable budget revenues. It is simpler to administer and scores worse on equity grounds from the perspective of the ability-to-pay principle of taxation. Against this background, Israel’s property tax system, known as Arnona, is complex, spatially diversified, and causes a lack of uniformity that leads to tax distortion. This paper’s primary purpose is to identify the weaknesses of Israeli property tax from 1997 to 2017 and indicate how to improve the property tax system. This paper is based on case studies from four of the most important cities in Israel: Tel Aviv, Jerusalem, Haifa, and Beersheba, which have four different measurement methods for calculating property tax. Unique data were collected from the Israel Central Bureau of Statistics. According to this analysis, it was found that there are substantial differences in property tax between the four cities over the two decades analyzed. The main weakness is the lack of uniformity of the taxation system; the solution is to unify the measurement of real estate area for tax purposes using drone technology.


2015 ◽  
Vol 10 (3) ◽  
pp. 155892501501000 ◽  
Author(s):  
Rocco Furferi ◽  
Lapo Governi ◽  
Yary Volpe

Pilling is an undesired defect of textile fabrics, consisting of a surface characterized by a number of roughly spherical masses made of entangled fibers. Mainly caused by the abrasion of fabric surface occurring during washing and wearing of fabrics, this defect needs to be accurately controlled and measured by companies working in the textile industry. Pilling measurement is traditionally performed using manual procedures involving visual control of fabric surface by human experts. Since the early nineties, great efforts in developing automatic and non-intrusive methods for pilling measurement have been made all around the world with the final aim of overcoming traditional, visual-based and subjective procedures. Machine Vision proved to be among the best options to perform such defect assessment since it provided increasingly performing measurement equipment and tools, serving the purpose of automatic control. In particular, a relevant number of interesting works have been proposed so far, sharing the idea of helping (or even replacing) traditional measurement methods using image processing-based ones. The present work provides a rational and chronological review of the most relevant methods for pilling measurement proposed so far. This work serves the purposes of 1) understanding whether today's automatic machine vision-based pilling measurement techniques are ready for supplanting traditional pilling measurement and 2) providing textile technology researchers with a bird's eye view of the main methods studied to confront with this problem.


ACTA IMEKO ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 79
Author(s):  
A. Furtado ◽  
J. Pereira ◽  
R. Quendera ◽  
M. Schiebl ◽  
E. Lenard ◽  
...  

To provide a deeper insight about the damping effects produced by the viscoelasticity of non- Newtonian fluids during density measurements with oscillation-type density meters, and about how reference laboratories overcome these effects, an international comparison was performed, within the scope of the EMPIR Project 17RPT02 rhoLiq. The results of the comparison evidenced the possibility to measure density of viscoelastic samples by means of oscillation-type density meters with an uncertainty between 0.10 kg·m<sup>-3</sup> and 0.25 kg·m<sup>-3</sup>. However, these instruments may be able to reach lower uncertainties if compared with higher precision density measurement methods such as hydrostatic weighing.


2018 ◽  
Vol 2018 (5) ◽  
pp. 149-166
Author(s):  
Irina Kalabikhina ◽  
Nelly Smulyanskaya

Current trends in fertility are similar in most countries of the world. To reduce the level of fertility, actively manifested since the second half of the last century, important changes in the calendar of births were added. The classical indicators of demographic statistics are more often dealing with the intensity of fertility, to a lesser extent — with the timing of fertility. The authors made an attempt to compile a system of indicators for the timing, which was then used to study the stages and types of ageing of fertility.


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