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Typus
KomplettPlagiat
Bearbeiter
Hindemith
Gesichtet
Yes.png
Untersuchte Arbeit:
Seite: 51, Zeilen: 1 ff. (komplett)
Quelle: Vazquez 2007
Seite(n): 39, 40, Zeilen: 39: 25 ff.; 40: 1 ff.
Saa 051a diss.png

Figure 3.4: General Architecture of Task Computing Environment

3.4.1 Task Computing Architecture

Fig. 3.4 shows the TC architecture [81], which is composed of four different layers, performing complementary activities:

  • Realization Layer: It is the bottommost layer, directly representing available facilities. There are three different types of entities at this layer: devices, applications and e-services over the Web.
  • Service Layer: The available facilities from the Realization Layer are embodied into the form of service at this layer and services interfaces are constructed. Semantic Service Descriptions (SSD) comprising knowledge about these services are also created in order to disseminate information.
  • Middleware Layer: This layer is in charge of service discovery, service composition and execution, and other management activities such as Service Publishing. In some way, it glues services created at the Service Layer with available underlaying technologies to support transport and management functions over them.
  • Presentation Layer: It is considered to be the most important layer in the architecture. It provides the user with an abstraction of available tasks that can be performed in the environment, hiding underneath complexity, and allowing the user [to dynamically assemble components to perform the desired task.]

[81] Zhexuan Song, Yannis Labrou, and Ryusuke Masuoka; Dynamic service discovery and management in Task Computing. In First Annual International Conference on Mobile and Ubiquitous Systems: Networking and Services (MobiQuitous'04), pages 310-318, 2004.

2.3.1 Task Computing architecture

The Task Computing architecture is composed of four different layers, performing complementary activities:

  • Realization layer: it is the bottommost layer, directly representing available facilities. There are three different types of entities at this layer: devices, applications and e-services over the Web.
  • Service layer: available facilities from the Realization layer are embodied into the form of service at this layer and services interfaces are constructed. Semantic Service Descriptions (SSD) comprising knowledge about these services are also created in order to disseminate information.
  • Middleware layer: this layer is in charge of service discovery, service composition and execution, and other management activities such as

[Seite 40]

Saa 051a source.png

Figure 2.8: Task Computing architecture. Source: [SLM04].

service publishing. In some way, it glues services created at the Service layer with available underlaying technologies to support transport and management functions over them.

  • Presentation layer: it is considered the most important layer in the architecture. It provides the user with an abstraction of available tasks that can be performed in the environment, hiding underneath complexity, and allowing the user to dynamically assemble components to perform the desired task.

[SLM04] Zhexuan Song, Yannis Labrou, and Ryusuke Masuoka. Dynamic service discovery and management in task computing. In First Annual International Conference on Mobile and Ubiquitous Systems: Networking and Services (MobiQuitous’04), pages 310–318, 2004.

Anmerkungen

Ein Verweis auf die Quelle fehlt.

Sichter
(Hindemith), SleepyHollow02

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