scholarly journals A Study on the World Geodetic System Transformation Using Triangle Mesh Warping

2014 ◽  
Vol 22 (1) ◽  
pp. 35-43
Author(s):  
Gye Hwan Jee ◽  
Hyun Jik Lee ◽  
Jay Hyoun Kwon ◽  
Gyoo Seong Sim
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Eaed Mohamad Al-Momani

This study highlights the denominations used for currently dormant volcanoes, as well as the names used for some of them in the Hashemite Kingdom of Jordan as a case study. This study also explains the nature of these volcanoes natural phenomena playing a major role in most geological processes contributing in the formation and development of the earth crust. On the other hand, this study has focused on identifying and analyzing some currently dormant volcanoes sites and their extension to the surface. This study used computerized programs, such as the World Geodetic System (WGS84), as well as the (ERDASIMAGINE) system to determine the volcanic sites in order to collect and analyze data. It has reached a few findings and recommendations regarding the denomination of volcanoes, the population’s safety guarantee, the resources of such areas, as well preserving the country’s landmarks


1988 ◽  
Vol 128 ◽  
pp. 131-140
Author(s):  
John A. Bangert ◽  
James P. Cunningham

Since 1975, the Defense Mapping Agency (DMA) has been determining polar motion as a byproduct of computing the precise orbits of the Navy Navigation Satellite System (NNSS) satellites. The orbit determination process currently incorporates the NSWC 9Z2 terrestrial reference system and the NWL 10E-1 Earth Gravitational Model (EGM) to degree 28 and order 27. The World Geodetic System 1984 (WGS 84), developed by DMA, will replace the NSWC 9Z2/10E-1 system for NNSS orbit determination. The WGS 84 EGM to degree and order 41 will be utilized. This paper presents the results of two experiments which compared pole positions computed in the two systems. These comparisons indicate that use of WGS 84 improves agreement between pole position values resulting from the Nova-class satellite orbit solutions and the values determined by other modern techniques.


2021 ◽  
Vol 22 (3) ◽  
pp. 278-297
Author(s):  
Mehdi Basakha ◽  

Objective: The role of the service sector in general and healthcare services in particular have been promoting in Iran’s economy. The implementation of the Health System Transformation Plan and the injection of new financial resources into this sector have raised concerns about the health system function. Thus, this is the first attempt to estimate and evaluate the share of rehabilitation services in the Iranian economic and health systems. Materials & Methods: The study utilized longitudinal trend analysis using the National Health Accounts data during 2002-2015. National Health Accounts, through input-output tables, breaks down the share of different sources of financing for different functions of the health system. According to this method, both the share of rehabilitation services in Iran’s economy and the financing sources of these activities have been calculated and compared to other countries. Data on Iran's National Health Accounts has been collected from the Statistical Center of Iran. International data is collected from the World Health Organization's National Health Accounts and the databases of the Organization for Economic Cooperation and Development member countries. Results: Expenditures related to rehabilitation services in Iran increased from 884 billion rials in 2002 to more than 2967 billion rials in 1396, equivalent to 0.02% of Iran's GDP in that year. The share of rehabilitation expenditures in total health expenditures in 2007 was at its highest level (0.3%). In the following years, it has always had a decreasing trend. In 1396 it reached about 22.0%, the lowest amount during 16 Last year. Comparing the economic share of rehabilitation of the country's economic activities with different countries shows that the position of this sector is in no way comparable to developed countries and is even lower than many developing countries. Tunisia, Tonga, and Moldova have a similar situation to Iran's economy, with rehabilitation services accounting for about 0.05 to 0.1 percent of their total economic activity. Comparison of the prevalence of disability in these countries with Iran shows that these countries had a lower prevalence than Iran. Examination of the share of various sources shows that out-of-pocket payments with households with 6.37 percent, the most, and the government with 7.18 percent had the least role in financing rehabilitation services. It is noteworthy that this figure was about 65% before implementing the health system transformation plan. Social insurance in 2017 also covered only 6.24% of rehabilitation costs. Conclusion: Inaccessibility of people with disabilities to healthcare services is a very serious issue in the world. The rehabilitation services expenditures have always been mentioned as one of the most important barriers of accessing to these services. Following the implementation of the Health Transformation Plan, the share of rehabilitation activities in Iran’s health market has been shrunk.


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