Gruppe und Netzwerk — eine begriffsgeschichtliche Rekonstruktion

The essay develops three central arguments. Firstly, while being one of the core concepts of sociology in the early 20^th century, the group concept loses its central position between 1960 and 1970. As a conceptual tool for the understanding of configurations of social relationships, it is increasingly replaced by the network concept. Secondly, the group concept implies bounded social entities. The network concept, in contrast, stresses the unbounded interweaving of social ties and contexts. This allows for a better understanding of the complex social patterns of modernity. Thirdly, groups are special cases of ?involuted“ network structure. Here, a symbolically constructed social boundary becomes the central focus for transaction processes. This also makes for an increased alignment of social relationships within the group. These three arguments are grounded in a historical perspective on the conceptual careers of ?groups“ and ?networks“ in various sociological schools. The essay stresses the dynamics and inner logics of social relationships and resulting configurations (groups being one example) on the meso-level.     

论舆论监督的有效途径

在现代民主法治国家,舆论监督在社会生活中扮演着非常重要的角色。在我国,舆论监督越来越 受到公众的关注,并在推进改革、防止腐败和保护公民权等方面发挥着重要的作用。加强新闻立 法工作,推动舆论监督法治化;完善舆论监督外部环境的制度建设;建立监督主体的自律机制,是 完善这一制度的有效途径。     

Organizations and Pluralist Democracy

The ideal conception of pluralist democracy can be seen as a schematic picture of actual conditions. On the local level - in the municipalities - there are a number of variants of pluralism. If local political systems can be assumed to be of varying character, it stands to reason that the roles of organizations in those sub-systems can also vary.
The following three general conclusions concerning the role of organizations in Swedish municipal politics are supported by our empirical findings:
(1) A heterogeneous pattern of values in a municipality promotes the development of an arrangement in which organizations predominantly assume the role of political opposition.
(2) The interaction between municipalities and organizations is a function of the pattern of local political values. The more heterogeneous this pattern, the more frequent are politically oriented contacts.
(3) Increased overlap of the social, the economic and the political arenas, and a more incrementalist decision-making structure in modern municipalities, creates greater incentives for the formation of organizations.
There should not be any doubt about the fact that the amalgamation reforms contributed to the creation of a more differentiated and multifaced structure of organizations. Hence, it could be said that the amalgamation reforms together with other structural factors are in the long run positively correlated with pluralism!
'Whatever progress may come in the future, anyone attempting today to give a systematic account of organizational behavior, especially of politically relevant behavior, cannot pretend he is offering a theory in any strict sense. At best, he can offer a theoretical perspective, a way of looking at organizations that directs attention persuasively to a few central processes that seem to explain (though not predict, in any scientific sense) a wide variety of phenomena.' (Wilson 1973. 13).     

Color separation in forensic image processing

In forensic image processing, it is often important to be able to separate a feature from an interfering background or foreground, or to demonstrate colors within an image to be different from each other. In this study, a color deconvolution algorithm that could accomplish this task is described, and it is applied to color separation problems in document and fingerprint examination. Subtle color differences (sometimes invisible to the naked eye) are found to be sufficient, which is demonstrated successfully for several cases where color differences were shown to exist, or where colors were removed from the foreground or background. The software is available for free in the form of an Adobe Photoshop-compatible plug-in.     

A simple microthermal desorption device

A new method for thermal desorption of small samples is presented. The method uses a solid phase microextraction (SPME) holder with the fiber removed. The sample-for example, an ink sample on paper-is simply placed inside the needle of the holder, where normally an SPME fiber is positioned. The thermal desorption is then performed on any kind of gas chromatograph in a manner similar to that for SPME analysis. The needle of the SPME holder penetrates the injector septum; the temperature of the thermal desorption is simply the temperature of the injector. No solvents or liquid nitrogen cooling are used. The paper sample is kept inside the holder needle during the analysis. After the analysis is completed, the sample is removed from the needle by pushing forward the steel wire inside the needle in the way normally used to perform sampling with the SPME fiber. The desorbed compounds were analyzed by gas chromatography with a flame ionization detector or by gas chromatography-mass spectrometry. The optimum temperature for desorption of ink samples on paper was 200 degrees C. The influence of the paper matrix is negligible at that temperature. Laboratories lacking the commercial device for thermal desorption can use this cheap device for the analysis of, for example, writing ink, printing ink, and inkjet ink samples on paper. Other types of samples can be investigated but the size of samples suitable for analysis is limited.     

What shall we do with the drunken sailor?: Effects of alcohol on the performance of ship operators

The purpose of this study was to specify the effects of alcohol on the performance of ship operators as a contribution to the development of new strategies against the risks of alcohol in water traffic. The nautical performance of 21 captains before and after alcohol consumption was assessed on a ship piloting simulator. The simulated scenarios represented passages of a container vessel through the German Bight. Performance was examined by nautical instructors according to standardised protocols. Mean (S.D.) blood alcohol concentrations (BACs) of 0.100 (0.024) g/dl before and 0.100 (0.017) g/dl after the performance trial resulted in striking effects on the nautical performance. The categories most severely affected were foresight and analysis of situation (impairment in 18 of 21 cases), concentration (impairment in 16 of 21 cases), accurateness, risk disposition and navigation (impairment in 15 of 21 cases). Chart work, preparation and communication were impaired in 12, 11 and 10 of 21 cases, respectively. None of the participants were capable to operate the simulated ship with an adequate safety after ingestion of alcohol. From these findings, and in consideration of the well-established impairment of a multitude of mental and physical functions by alcohol, it can be concluded that even low BACs bear high risks in water traffic, a concentration above 0.1 g/dl will hinder a sufficiently safe performance of ship operators. This should be considered in alcohol education and legislation.