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21.
In this paper we suggest a model for an analysis of how newspapers and political parties determine their ideological orientation and how both decisions depend on each other. Quite naturally dissemination of information plays an important role. The model is set up as a two-stage game. Because elements of horizontal as well as vertical product differentiation are present in this model location patterns in ideology space exhibit in general neither maximal nor minimal differentiation, although we keep quite close to the Downs model, with information as the most important distinguishing feature. Furthermore, the model shows by way of example that economic theory can be a useful tool to investigate issues which are central to communication science. 相似文献
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The cause of drowning deaths in good swimmers may be difficult to solve. After homicide, suicide and other kinds of immersion deaths have been ruled out, not only alcohol and narcotics, but also other psychotropic substances such as thornapple and angel's trumpet should be taken into consideration--at least in adolescents and young adults. The article reports on an accidental death by drowning under the influence of tropane alkaloids after consumption of a decoction of the flowers of angel's trumpet. 相似文献
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Ohne Zusammenfassung 相似文献
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Alexander Thumfart Grit Straßenberger Steffen Ganghof Beate Rosenzweig Oliver Eberl Raimund Ottow Peter Niesen Uwe Wagschal Dirk Jacobi Wolfram Lamping Alf Mintzel Kai-Uwe Schnapp Anna Geis Hanna Kaspar Otmar Jung Ulrich Sieberer Philipp Klages Alexander Warkotsch Christian Lammert Susanne Frölich-Steffen Ralf J. Leiteritz Klaus Schlichte Siegfried Weichlein Claudia Ritter Marcus Höreth Alexander Siedschlag Kolja Raube Wolfgang Muno Helga Haftendorn Armin Pfahl-Traughber Wilhelm Bleek Ralf Zwengel 《Politische Vierteljahresschrift》2006,47(3):475-543
Ohne Zusammenfassung 相似文献
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Wolfgang Seibel und Oscar W. Gabriel 《Politische Vierteljahresschrift》2002,43(3):395-396
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Jackowski C Römhild W Aebi B Bernhard W Krause D Dirnhofer R 《The American journal of forensic medicine and pathology》2005,26(4):355-359
We present a case of an accidental autoerotic death involving the inhalation of a propane-butane gas mixture, also known as LPG (liquefied petroleum gas). A 19-year-old male was found dead in supine position in his bed in a residential accommodation one day after he was last seen alive. On a personal computer at the end of the bed, a pornographic movie was still running. On his left shoulder, an empty rubber balloon and on the bedside 2 empty "Kisag-Gas" cartridges were found. Toxicologic investigations revealed an intoxication with propane and butane, together with a recent consumption of cannabis. This case report compares the toxicologic findings with other recently published cases, and the theories of the toxic effects are discussed. 相似文献
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Schneider PM Bender K Mayr WR Parson W Hoste B Decorte R Cordonnier J Vanek D Morling N Karjalainen M Marie-Paule Carlotti C Sabatier M Hohoff C Schmitter H Pflug W Wenzel R Patzelt D Lessig R Dobrowolski P O'Donnell G Garafano L Dobosz M De Knijff P Mevag B Pawlowski R Gusmão L Conceicao Vide M Alonso Alonso A García Fernández O Sanz Nicolás P Kihlgreen A Bär W Meier V Teyssier A Coquoz R Brandt C Germann U Gill P Hallett J Greenhalgh M 《Forensic science international》2004,139(2-3):123-134
Degradation of human DNA extracted from forensic stains is, in most cases, the result of a natural process due to the exposure of the stain samples to the environment. Experiences with degraded DNA from casework samples show that every sample may exhibit different properties in this respect, and that it is difficult to systematically assess the performance of routinely used typing systems for the analysis of degraded DNA samples. Using a batch of artificially degraded DNA with an average fragment size of approx. 200 bp a collaborative exercise was carried out among 38 forensic laboratories from 17 European countries. The results were assessed according to correct allele detection, peak height and balance as well as the occurrence of artefacts. A number of common problems were identified based on these results such as strong peak imbalance in heterozygous genotypes for the larger short tandem repeat (STR) fragments after increased PCR cycle numbers, artefact signals and allelic drop-out. Based on the observations, strategies are discussed to overcome these problems. The strategies include careful balancing of the amount of template DNA and the PCR cycle numbers, the reaction volume and the amount of Taq polymerase. Furthermore, a careful evaluation of the results of the fragment analysis and of automated allele calling is necessary to identify the correct alleles and avoid artefacts. 相似文献