The Extend simulation environment provides the tools for all levels of modelers to efficiently create accurate, credible, and usable models. Extend’s design facilitates every phase of the simulation project, from creating, validating, and verifying the model, to the construction of a user interface which allows others to analyze the system. Simulation tool developers can use Extend’s built-in, ...

Resume-This article shows the most usual fire detection and forest extinction application technologies at present. We will see all different methods used by these applications that can be found in the Market and some examples. Also, some basic questions about the most influent parameters when a fire must be extinct are shown. Finally, after having shown all the technologies, we will build a mod...

Ubiquitous deployment of middleboxes has resulted in ossification of the transport layer, with TCP and UDP becoming part of the narrow waist of the Internet. This is a necessary stage in the evolution of the network, caused by its progression from research, to production, to increasingly critical infrastructure. New transport layer protocols will be needed in future, but since we are working wi...

Two Human-in-the-Loop (HITL) simulations were conducted to investigate the concurrent use of Runway Entrance Lights (RELs) and Surface Movement Guidance Control System (SMGCS) stop bars. The first study investigated use by pilots who did receive training on using these lighting systems simultaneously, while the second study investigated use by pilots who did not receive training. A total of 11 ...

One of the major impacts of climatic changes is due to destroying of forest. Destroying of forest takes place in many ways but the majority of the forest is destroyed due to wild forest fires. In this paper we have presented a path planning algorithm for extinguishing fires which uses Wireless Sensor and Actor Networks (WSANs) for detecting fires. Since most of the works on forest fires are bas...

Black hole perturbation theory is typically studied on time surfaces that extend between the bifurcation sphere and spatial infinity. From a physical point of view, however, it may be favorable to employ time surfaces that extend between the future event horizon and future null infinity. This framework resolves problems regarding the representation of quasinormal mode eigenfunctions and the con...

We construct noninvertible maps on every compact surface and study their chaotic properties from both the measure theoretic and topological points of view. We use some topological techniques employed by others for diffeomorphisms and extend to the noninvertible case.

We propose a new type of materialized view called a partially materialized view. A partially materialized view only materializes some of the rows, for example, the most frequently accessed rows, which reduces storage space and view maintenance effort. One or more control tables are associated with the view and define which rows are currently materialized. As a result, one can easily change whic...