The aim of the paper is to evaluate the usefulness of dendrochronological analyses in studying complex stratigraphic sequences. The problem is discussed basing on the example of Wrocław, the main town of historic Silesia, where the thickness of medieval layers containing wood ranges between 3 and 5 m. The first attempts to date them using dendrochronology were made at the end of the 1980s. Some dates, or their short series, were then used as a basis for far-reaching conclusions regarding the chronology of the beginnings of settlement or breakthrough events. The preliminary stage of dendrochronological analyses and uncritical acceptance of interpretations ended in Wrocław with the excavations carried out in 2000. Longer series of dendrochronological dates have become one of the basic tools for dating complex correlated being aware of limitations set by both categories of sources and methods of their analysis. It was stated that giving up on an in-depth critique of dendrological samples as a category of sources can result in a considerable distortion of the acquired results. and Cílem článku je hodnocení využitelnosti dendrochronologie při studiu složitých stratigrafických situací, a to na příkladu slezské Vratislavi, kde středověké terény obsahující dřevo dosahují mocnosti 3–5 m. První pokusy o datování archeologických vrstev pomocí dendrochronologie proběhly na konci 80. let 20. století. Některá data nebo jejich krátké série byly využity pro dalekosáhlé závěry o chronologii počátků osídlení či přelomových událostí. Tato etapa poznamenaná nekritickou interpretací získaných dat skončila ve Vratislavi v souvislosti s archeologickými odkryvy v r. 2000. Základním nástrojem pro datování složitých situací se staly početnější řady dendrochronologických dat. Stratigrafická pozorování byla korelována s dendrochronologickými daty s vědomím limitů obou pramenných kategorií a příslušných metod. Opomenutí důkladné kritiky dendrologických vzorků coby samostatné kategorie poznávacích pramenů může vyústit v závažné pokřivení výpovědi dendrochronologické analýzy.
Dendromonocotyle colorni sp. n. (Monogenea: Monocotylidae) is described from the dorsal skin surface of two specimens of Himantura uarnak (Forsskål) kept at the Eilat Underwater Observatory in Israel. Dendromonocotyle colorni is distinguished from the other eight species in the genus by the morphology of the terminal papillar sclerite on the haptor, the distal portion of the male copulatory organ and the morphology of the vagina. The development of the male copulatory organ is detailed for D. colorni and the adaptations of species of Dendromonocotyle to life on the dorsal skin surface of rays are discussed. Dendromonocotyle octodiscus Hargis, 1955 was identified from the dorsal skin surface of the southern stingray Dasyatis americana Hildebrand et Schroeder off Bimini, Bahamas and represents a new host record.
In this paper we define the derivative and the Denjoy integral of mappings from a vector lattice to a complete vector lattice and show the fundamental theorem of calculus.
In a previous paper we defined a Denjoy integral for mappings from a vector lattice to a complete vector lattice. In this paper we define a Henstock-Kurzweil integral for mappings from a vector lattice to a complete vector lattice and consider the relation between these two integrals.
The present article that was originally conceived as an inaugural lecture on the occasion of opening the exhibition Klingende Denkmäler: Musikwissenschaftliche Gesamtausgaben in Deutschland in Nov 2006 at the Robert Schumann Hochschule Düsseldorf deals with the phenomenon and notion of ‘heritage’ (or ‘art heritage’) and its cultural-political contexts. It also stresses the fact that culture and politics have always been closely bound together. Only if one is aware of these close relations, does it seems possible to guarantee a contemporary cultural-political status for musical heritage as cultural heritage of the past as well as their appropriate reception and appreciation.
The terms denotation and reference are commonly used as synonyms. A more fine-grained analysis of natural language as offered by TIL shows that we can distinguish these terms in the case of empirical expressions. The latter are shown to denote non-trivial intensions while their reference (if any) is the value of these intensions in the actual world., Pojmy denotace a reference se běžně používají jako synonyma. Jemnější analýza přirozeného jazyka, kterou nabízí TIL, ukazuje, že tyto pojmy můžeme rozlišit v případě empirických výrazů. Ty jsou ukázány jako netriviální záměry, zatímco jejich reference (pokud existuje) je hodnotou těchto intenzí ve skutečném světě., and Pavel Materna
Some modifications of the definition of density of subsets in ordered (= partially ordered) sets are given and the corresponding concepts are compared.
We consider the space $D(X,Y)$ of densely continuous forms introduced by Hammer and McCoy and investigated also by Holá. We show some additional properties of $D(X,Y)$ and investigate the subspace $D^*(X)$ of locally bounded real-valued densely continuous forms equipped with the topology of pointwise convergence $\tau _p$. The largest part of the paper is devoted to the study of various cardinal functions for $(D^*(X),\tau _p)$, in particular: character, pseudocharacter, weight, density, cellularity, diagonal degree, $\pi $-weight, $\pi $-character, netweight etc.
A classical result in number theory is Dirichlet’s theorem on the density of primes in an arithmetic progression. We prove a similar result for numbers with exactly k prime factors for k>1. Building upon a proof by E.M.Wright in 1954, we compute the natural density of such numbers where each prime satisfies a congruence condition. As an application, we obtain the density of squarefree n 6 x with k prime factors such that a fixed quadratic equation has exactly 2k solutions modulo n., Neha Prabhu., and Seznam literatury