In 1985, Amin presented a new system for the classification of the Acanthocephala in Crompton and Nickol's (1985) book ''Biology of the Acanthocephala'' and recognized the concepts of Meyer (1931, 1932, 1933) and Van Cleave (1936, 1941, 1947, 1948, 1949, 1951, 1952). This system became the standard for the taxonomy of this group and remains so to date. Many changes have taken place and many new genera and species, as well as higher taxa, have been described since. An updated version of the 1985 scheme incorporating new concepts in molecular taxonomy, gene sequencing and phylogenetic studies is presented. The hierarchy has undergone a total face lift with Amin's (1987) addition of a new class, Polyacanthocephala (and a new order and family) to remove inconsistencies in the class Palaeacanthocephala. Amin and Ha (2008) added a third order (and a new family) to the Palaeacanthocephala, Heteramorphida, which combines features from the palaeacanthocephalan families Polymorphidae and Heteracanthocephalidae. Other families and subfamilies have been added but some have been eliminated, e.g. the three subfamilies of Arythmacanthidae: Arhythmacanthinae Yamaguti, 1935; Neoacanthocephaloidinae Golvan, 1960; and Paracanthocephaloidinae Golvan, 1969. Amin (1985) listed 22 families, 122 genera and 903 species (4, 4 and 14 families; 13, 28 and 81 genera; 167, 167 and 569 species in Archiacanthocephala, Eoacanthocephala and Palaeacanthocephala, respectively). The number of taxa listed in the present treatment is 26 families (18% increase), 157 genera (29%), and 1298 species (44%) (4, 4 and 16; 18, 29 and 106; 189, 255 and 845, in the same order), which also includes 1 family, 1 genus and 4 species in the class Polyacanthocephala Amin, 1987, and 3 genera and 5 species in the fossil family Zhijinitidae.
With regard to the water quality changes, the area of the Czech part of the Elbe River basin is extraordinarily dynamic. In the 20th century it experienced an enormous increase of load of pollution. Since the beginning of the 1990´s due to the political and economical changes we have witnessed a particularly intensive decrease in the emission volume and a related increase in water quality of watercourses. However, positive changes in the pollution load balance have occurred mainly in the biggest watercourses and these changes have not been accompanied by similar development in the whole river system. Using a newly created classification methodology the basic models of dynamics of water quality changes in the Elbe River basin have been derived. Based on GIS geostatistical analysis, regions with analogous water quality development trends have been defined for selected parameters and critical areas have been identified. It has become apparent that the prevailing part of the Elbe River basin has been experiencing a gradual increase in pollution. In addition, after a previous decrease, a number of watercourses experienced a recurrence of the increase in load. These areas are priorities for further development and the control of surface water protection against pollution. and Oblast české části povodí Labe je z hlediska změn kvality vody mimořádně dynamická. Díky intenzivnímu vývoji antropogenních aktivit a společenským změnám zaznamenala v průběhu 20. století nejprve enormní nárůst zátěže znečištěním, od počátku 90. let jsme naopak svědky mimořádně intenzivního snížení objemu emisí a souvisejícího zvyšování jakosti vody v tocích. Pozitivní změny v látkové bilanci jsou však soustředěny především na největší toky – Labe a Vltavu a nejsou doprovázeny obdobným vývojem v celém povodí. Pomocí nově vytvořené metodiky klasifikace vývoje kvality vody prezentované v článku byly na základě geostatistické analýzy sestaveny základní modely časové dynamiky změn kvality vody v povodí Labe. Pro jednotlivé ukazatele byly na základě analýzy v prostředí GIS vymezeny regiony s analogickými trendy vývoje kvality povrchových vod a identifikovány kritické oblasti. Ukazuje se, že přes pozitivní vývoj jakosti vody v hlavních sídelních a průmyslových regionech v 90. letech převažující část povodí Labe stále zaznamenává v jednotlivých ukazatelích postupný nárůst znečištění, na řadě toků navíc po předchozím poklesu dochází k opětovnému nárůstu zátěže. Tyto oblasti představují prioritu pro další rozvoj a řízení ochrany povrchových vod před znečištěním.
Decrease of attention and an eventual microsleep of an artificial system operator is very dangerous and its early detection can prevent great losses. This chapter deals with a classification of states of vigilance based on analysis of an electroencefalographic activity of the brain. Preprocessing of data is done by the discrete Fourier transform. For the recognition radial basis functions (RBF), learning vector quantization (LVQ), multi-layer perceptron networks, k-nearest neighbor and a method based on Bayesian theory are used. Coefficients of bayes classifier are found using the maximum likelihood estimation. The experiments deal with analysis of human vigilance while their eyes are open. Then the reaction on visual stimuli is investigated. For this experiment 10 volunteers were repeatedly measured. The chapter shows that it is possible to classify vigilance in such conditions.
We continue the study started recently by Agore, Bontea and Militaru in ``Classifying bicrossed products of Hopf algebras'' (2014), by describing and classifying all Hopf algebras $E$ that factorize through two Sweedler's Hopf algebras. Equivalently, we classify all bicrossed products $H_4 \bowtie H_4$. There are three steps in our approach. First, we explicitly describe the set of all matched pairs $(H_4, H_4, \triangleright , \triangleleft )$ by proving that, with the exception of the trivial pair, this set is parameterized by the ground field $k$. Then, for any $\lambda \in k$, we describe by generators and relations the associated bicrossed product, $\mathcal {H}_{16, \lambda }$. This is a $16$-dimensional, pointed, unimodular and non-semisimple Hopf algebra. A Hopf algebra $E$ factorizes through $H_4$ and $H_4$ if and only if $ E \cong H_4 \otimes H_4$ or $E \cong {\mathcal H}_{16, \lambda }$. In the last step we classify these quantum groups by proving that there are only three isomorphism classes represented by: $H_4 \otimes H_4$, ${\mathcal H}_{16, 0}$ and ${\mathcal H}_{16, 1} \cong D(H_4)$, the Drinfel'd double of $H_4$. The automorphism group of these objects is also computed: in particular, we prove that ${\rm Aut}_{\rm Hopf}( D(H_4))$ is isomorphic to a semidirect product of groups, $k^{\times } \rtimes \mathbb {Z}_2$.
Comparative housing research is hindered by attempts to provide broad empirical categorisations of types of Housing Regimes and their equivalents and sweeping cross-country generalisations about their effects. Regime theory is right to recognise the housing provision is and can be organised in different ways but proselytises too strongly. Real issues and policy debates in countries are instead embedded in the existence of specific, tenure related, networks of housing provision and they widely differ across the world. Taking that on board can lead to more fruitful understandings.
The eccentricity of a vertex v of a connected graph G is the distance from v to a vertex farthest from v in G. The center of G is the subgraph of G induced by the vertices having minimum eccentricity. For a vertex v in a 2-edge-connected graph G, the edge-deleted eccentricity of v is defined to be the maximum eccentricity of v in G − e over all edges e of G. The edge-deleted center of G is the subgraph induced by those vertices of G having minimum edge-deleted eccentricity. The edge-deleted central appendage number of a graph G is the minimum difference |V (H)| − |V (G)| over all graphs H where the edgedeleted center of H is isomorphic to G. In this paper, we determine the edge-deleted central appendage number of all trees.
In societies described as “cold” by Claude Lévi-Strauss, the historical dimension is coded into myths, traditions and rituals. Lévi-Strauss says that ritual is an “instrument for the destruction of time”. The key to the author’s idea of the opposition of synchronicity and diachronicity is found in his work The Savage Mind, in which he talks about a never-ending struggle between these two which initiates totemic thinking. In current sociology, Levi-Strauss’ concept of reversible time is utilised by Anthony Giddens, who adapts it in his structuration theory. However the concept of synchronous (structuralist) reversible time is simultaneously the subject of a critique from the perspectives of cultural anthropology (Alfred Gell) and sociology (Barbara Adam). At the article’s conclusion, the argument is made that when Lévi-Strauss talks about cold societies, which tend to banish history from the consciousness, it doesn’t mean that he is trying to over rule the laws of logic or physics (as he is accused by Gell) but at tempting to see the world through the eyes of a specific type of society and to understand time from the perspective of a “native”. and Jiří Šubrt.
The study focuses on the subject that Lévi-Strauss never devoted himself to in a systematic way. The essence of his view on the urban space can be found in few pages of his travel book Tristes Tropiques (English version is entitled World on the Wane). In spite of this fact, the study tries to show that the opinions on the urban space delivered in this work are important for us to under stand the basis of his method, as well as to get closer to the places where his thinking opens to the new perspectives of the anthropological studies. When analyzing these opinions, we find that on the one hand they confirm the primary trend of his method, which is the orientation towards unconscious models; on the other hand, however, we see the role of collective conscience in a new light. Similarly, we will have to correct the idea about the relation between structures and their demographic substance. In his work La Pensée sauvage (The Savage Mind) Lévi-Srauss presented this relationship as a conflict of two sides, from which the second one, the demographic substance always ends up pre dominating: it decomposes the structural organizations and leads the community to the historical time. Lévi-Strauss’ reflections about the city indicate that the demographical substance could have a different function in his thinking. Thanks to the concentration of a big amount of people, a city can in its organization of space display the unconscious trends of mind. The last part of the study aims to discover in Lévi-Strauss’ opinions on the South American cities the indication of what could be called the anthropology of present or even future times. and Miroslav Marcelli.
Contrary to what is often thought, the structuralist approach has never been adopted in French sociology very extensively. When speaking about structuralism in this discipline, the work of Pierre Bourdieu is generally referred to. The present paper is intentionally heading in another direction and is questioning Lévi-Straussian traces in Baudrillard’s theory of the consumer society. First, Baudrillard acknowledges being in debt to Lévi-Strauss for his conception of consumption as a language. In this perspective exchanged goods are understood as object-signs. We believe nevertheless that Baudrillard goes even further when he analyzes the phenomenon of absurd violence, bearing in mind - even he does not directly disclose it - Lévi-Strauss’ concept of “free signifier”. All the same we finally conclude that Baudrillard’s use of Lévi-Strauss is rather cursory. Despite this fact it is of interest: Thus we follow Baudrillard’s analysis and consider the problem of social criticism, which is one of the main topics of his writings here discussed. and Jan Maršálek.