نتایج جستجو برای: sdis hyperring

تعداد نتایج: 313  

Journal: :Data Science Journal 2007
Kim T. Finney

Spatial Data Infrastructures (SDIs) have been developing in some countries for over 10 years but still suffer from having a relatively small installed base. Most SDIs will soon converge around a service-oriented-architecture (SOA) using IT standards promulgated primarily by the Open Geospatial Consortium (OGC) and ISO Technical Committee 211. There are very few examples of these types of archit...

2016
K. P. Shum

In this paper, our aim is to introduce the notion of a composition (m,n, k)-hyperring and to analyze its properties. We also consider the algebraic structure of (m,n, k) hyperrings which is a generalization of composition rings and composition hyperrings. Also, the isomorphism theorems of ring theory are derived in the context of composition (m,n, k)-hyperrings.

2008
Marsha Luginbuehl Kathy L. Bradley-Klug John Ferron W. McDowell Selim R. Benbadis

Approximately 20%–25% of the pediatric population will likely develop a sleep disorder sometime during childhood or adolescence. Studies have shown that untreated sleep disorders can negatively affect cognitive abilities, and academic and behavior performance. The Sleep Disorders Inventory for Students (SDIS) is a screening instrument designed to be used by school psychologists to determine if ...

Journal: :Analele Universitatii "Ovidius" Constanta - Seria Matematica 2017

Journal: :ISPRS International Journal of Geo-Information 2017

2009
Ara Toomanian Ali Mansourian

Development and usage of proper frameworks for implementation, evaluation and continuous improvement of spatial data infrastructures (SDIs) is currently an important research topic. A wide range of methods are being researched. In this respect, methods and techniques on performance measurement and evaluation techniques from business management literature are not yet considered. Some techniques ...

Journal: :IJSDIR 2006
Ian P. Williamson Abbas Rajabifard Andrew Binns

This paper aims to introduce and discuss six challenges and issues facing the development of SDIs which will be able to meet the sustainable development objectives of society. These issues and challenges include: SDI to facilitate spatially enabled government Role of government, private and academic sectors Development of SDI vision, mission and road map – where are we heading? SDI to facilitat...

2010
Ulrika Palme

Semi-structured interviews with 47 key actors were conducted in Swedish water utilities on why Sustainable Development Indicators (SDIs) are or are not used. Important influencing aspects identified included organizational inertia, social capital, the national water sector and authorities. Divergent views of SD and indicators appear to hinder SDI initiatives. Possible explanations are that: (a)...

Journal: :iranian journal of science and technology (sciences) 2013
b. davvaz

the concept of  -semihyperring is a generalization of semiring, a generalization of semihyperring and a generalization of      -semiring. since the theory of ideals plays an important role in the theory of  - semihyperring, in this paper, we will make an intensive study of the notions of noetherian, artinian, simple and   regular      -semihyperrings. the bulk of this paper...

Journal: :IJSDIR 2009
Rubén Béjar Miguel Ángel Latre Javier Nogueras-Iso Pedro R. Muro-Medrano F. Javier Zarazaga-Soria

This paper proposes Systems of Systems (SoS) as a conceptual framework to support the creation, evolution and study of Spatial Data Infrastructures (SDIs). After reviewing the relationship between SDIs and generic Information Infrastructures (IIs), a comparison of the latter and SoS is presented. The conclusions of this comparison lead us to propose that IIs can be considered as SoS with severa...

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