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Data Clouds for product life-cycle management
Published in Jaap Bakker, Dan M. Frangopol, Klaas van Breugel, Life-Cycle of Engineering Systems, 2017
S.S. Stolk, D. Oostinga, N. Roest
Semantic Web technology is comprised of a number of open standards. These standards, specified by the W3C consortium, put forward common data formats and ways to exchange data. Of the Semantic Web standards, the basis is formed by the Resource Description Framework (RDF). This standard offers a structure for information, conceived for sharing via the Web (W3C 2014a, W3C 2004, W3C 2014b). To be able to identify information, resources in RDF are assigned unique identifications: Unique Resource Identifiers (URIs). Such URIs tend to take the form of HTTP addresses, which allows for published data to be shared via the internet by means of simply accessing the HTTP address of a resource (known as dereferencing). Such practice, often referred to as Linked Data, will allow software to retrieve information on a resource in an automated manner (see figure 1). Furthermore, RDF states that the actual information on resources is to be described using triples: a combination of two elements connected by a relation. A triple consists of 1) a subject, e.g. the car owned by John, 2) a predicate, e.g. has license plate, and 3) an object, e.g. TB-TL-82. Of these three elements, the predicate acts as relation between the subject and its object. Although RDF can be stored in various forms (e.g. RDF/XML, N3, Turtle, N-Triples, JSON-LD, Trix)(W3C 2014c), the storage form opted for is irrelevant for the structure of the information. After all, information in RDF is always captured using triples (Herman 2009).
Emergence of Enterprise Mobility
Published in Jithesh Sathyan, Anoop Narayanan, Navin Narayan, K V Shibu, A Comprehensive Guide to Enterprise Mobility, 2016
Jithesh Sathyan, Anoop Narayanan, Navin Narayan, K V Shibu
Semantic web is the foundation of Web 3.0. Semantic web is centered at a resource description framework (RDF) together with the formal notations. The formal notations include RDF schema, web ontology language, and data exchange formats. The data exchange formats used are RDF/XML, N3, Turtle, and N-Triples. The underlying structure of any expression in RDF is a collection of triples, each consisting of a subject, a predicate, and an object. There is an explosive growth in the variety of information sources on the web. Web mining can be used to analyze and track the content and usage patterns on the web.
Precast segmental bridge construction in seismic zones
Published in Fabio Biondini, Dan M. Frangopol, Bridge Maintenance, Safety, Management, Resilience and Sustainability, 2012
Fabio Biondini, Dan M. Frangopol
The knowledge base is modeled with the Web Ontology Language in its second version called OWL 2 (World Wide Web Consortium 2009). An Ontology describes relations like a hierarchy does, but can express more complex relations. The semantics of OWL 2 are explained in (Motik 2009). As OWL and OWL 2 are described syntax independent, the actual implementation can be done by choosing among several syntax formulations. Often used syntaxes are "RDF/xMl", "Functional Syntax", “Manchester Syntax”, “OWL/XML” and “Turtle”.
Uncovering hidden windmills across contexts
Published in International Journal of Mathematical Education in Science and Technology, 2022
Over three decades ago, Papert (1980) introduced a computer environment – Logo, which included turtle graphics, a programming microworld for children to construct geometric shapes while thinking mathematically. As a part of a powerful programming language, turtle graphics is based on four commands (forward, back, right, and left) that allow users to create possible movements of the turtle that lead to constructions of geometric shapes. (For personal use or classroom exploration, a free Turtle graphics is available on Chrome1).