We treat the classical dynamics of the hydrogen atom in perpendicular electric and magnetic fields as a celestial mechanics problem. By expressing the Hamiltonian in appropriate action–angle variables, we separate the different time scales of the motion. The method of averaging then allows us to reduce the system to two degrees of freedom, and to classify the most important periodic orbits.

In addition to expressing some main content, utterances often convey secondary content, which is content that is not their "main point", but which rather provides side or background information, is less prominent than the main content, and shows distinctive behavior with respect to its role in discourse structure and which discourse moves it licenses. This volume collects original research papers on the semantics and pragmatics of secondary content. By covering a broad variety of linguistic phenomena that convey secondary content - (...) including expressives, various particles, adverbials, pronouns, quotations, and dogwhistle language - the contributions show that secondary content is pervasive throughout different aspects of natural language and provide new insight into the nature of secondary content through new semantic and pragmatic analyses. (shrink)

According to the theory which Julia Kristeva developed moving from Bakhtin’s theory of dialogy (the relationship of words with each other) and called intertextuality in her study dated 1966, no text exists autonomously because every text is in interaction with other text/s either consciously or unconsciously. The function of intertextuality is to determine covered or overt relations between texts, the position of them (receiver/transmitter), in some cases even to search whether the interaction is one-way or two-way and to reveal the (...) traces of the texts in each other. In other words, the texts are analysed layer by layer and the different tastes and colours they embody and which enrich them are discovered. One of the research areas of intertextuality is mythology and religion which are frequently taken as subjects in such studies. Mythology and religion are one of the sources from which almost all the World literature is nourished widely. Generally Turkish literature and specifically Turkish theatre within the World literature, harbour the effects of the myths and various religions intensively. In this context, this study will analyse religious and mythological elements/ allusions in Turgay Nar’s play called Çöplük and will determine how these religious and mythological elements have been changed and transformed, in other words have been deconstructed by the playwright. (shrink)