Suchergebnisse

In general, it is potentially dangerous for people to use several digital devices while driving because this may cause mental overload. However, it is now common for drivers to use both a smartphone navigation application (app) and an in-vehicle navigation system. We investigated the
behavior of 41 drivers who used both navigation systems, and determined their reason for using, and mode of use of these. Results showed that the majority of participants used a mobile phone app as their primary navigation system and the in-vehicle navigation system as the secondary system.
They often kept the in-vehicle navigation system turned on, to use as backup in certain situations, such as the loss of battery power for their smartphone or the need to receive a phone call. Practical implications are discussed.

The artilce considers the English-Russian Navigation dictionary in the context of its creation. The dictionary evolved from a small appendix to a textbook into a separate edition, which is a part of a multi-volume Marine Navigation Course. The Navigation Dictionary as part of the Marine Navigation Course ed. by Yakov Lapushkin was published twice: in 1947 by Nikolay Rybakov and in 1960 by Tamara Rutkovskaya. The representatives of the professional naval, academic, and scientific community, including the well-known lexicographer Alexander Taube, contributed to this dictionary. A comparative analysis of the sources shows the continuity between these dictionaries in their content, design and structure. The demand for the new 1960 version was explained by a rapid scientific and technological progress, as well as by the requirements to take into account not only British, but also American sources due to the increasing role of the United States in the navigation in this period. The need to create a navigation dictionary, including both special terminology and basic commands, was justified in the textbooks by Nikolay Rybakov, and in the preface to the dictionary by Tamara Rutkovskaya by the role that this language played in professional naval communication. Navigators needed a modern English-Russian dictionary that could be used for reading foreign manuals, for communication with pilots; such professional skills should have been obtained in the course of studies. Nowadays, old dictionaries compiled scores of years ago, remain a valuable source of information on the history of the Russian scientific and technical thought and professional communication.

Dieser Beitrag stellt einen Algorithmus für das Job-shop-Scheduling-Problem vor, welcher den Lösungsraum indexiert und eine systematische Navigation zur Lösungssuche durchführt. Durch diese problemadäquate Aufbereitung wird der Lösungsraum nach bestimmten Kriterien vorzustrukturiert. Diese Problemrepräsentation wird formal beschrieben, sodass ihre Anwendung als Grundlage für ein navigationsorientiertes Suchverfahren dienen kann. Ein vergleichender Test mit anderen Optimierungsansätzen zeigt die Effizienz dieser Lösungsraumnavigation.
 
This paper presents an algorithm for the job-shop scheduling problem indexing the solution space and performing systematic navigation to find good solutions. By this problem-adequate preparation of the solution space, the solution space is pre-structured according to certain criteria. This problem representation is formally described so that its application can serve as a basis for a navigation-oriented search procedure. A comparative test with other optimization approaches shows the efficiency of this solution space navigation.