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Dorf im Digital?
(2015)
Background: Habitual walking speed predicts many clinical conditions later in life, but it declines with age. However, which particular exercise intervention can minimize the age-related gait speed loss is unclear.
Purpose: Our objective was to determine the effects of strength, power, coordination, and multimodal exercise training on healthy old adults' habitual and fast gait speed.
Methods: We performed a computerized systematic literature search in PubMed and Web of Knowledge from January 1984 up to December 2014. Search terms included 'Resistance training', 'power training', 'coordination training', 'multimodal training', and 'gait speed (outcome term). Inclusion criteria were articles available in full text, publication period over past 30 years, human species, journal articles, clinical trials, randomized controlled trials, English as publication language, and subject age C65 years. The methodological quality of all eligible intervention studies was assessed using the Physiotherapy Evidence Database (PEDro) scale. We computed weighted average standardized mean differences of the intervention-induced adaptations in gait speed using a random-effects model and tested for overall and individual intervention effects relative to no-exercise controls.
Results: A total of 42 studies (mean PEDro score of 5.0 +/- 1.2) were included in the analyses (2495 healthy old adults; age 74.2 years [64.4-82.7]; body mass 69.9 +/- 4.9 kg, height 1.64 +/- 0.05 m, body mass index 26.4 +/- 1.9 kg/m(2), and gait speed 1.22 +/- 0.18 m/s). The search identified only one power training study, therefore the subsequent analyses focused only on the effects of resistance, coordination, and multimodal training on gait speed. The three types of intervention improved gait speed in the three experimental groups combined (n = 1297) by 0.10 m/s (+/- 0.12) or 8.4 % (+/- 9.7), with a large effect size (ES) of 0.84. Resistance (24 studies; n = 613; 0.11 m/s; 9.3 %; ES: 0.84), coordination (eight studies, n = 198; 0.09 m/s; 7.6 %; ES: 0.76), and multimodal training (19 studies; n = 486; 0.09 m/s; 8.4 %, ES: 0.86) increased gait speed statistically and similarly.
Conclusions: Commonly used exercise interventions can functionally and clinically increase habitual and fast gait speed and help slow the loss of gait speed or delay its onset.
Violence
(2015)
The Secret Society of Torturers107How do normal people become able to torture others? In order to explain this puzzling social phenomenon, we have to take secrecy – the characteristic trait of modern torture – as the lynchpin of the analysis. Following Georg Simmel’s formal analysis of the “secret society”, the contribution reconstructs structural and cultural aspects of the secret society of torturers that generate social processes that allow its members to behave extremely violently, forcing individuals to turn into torturers. The contribution argues that the form of social behaviour that we call torture is socially shaped. It goes beyond social psychology to de-velop an explanation from the perspective of relational sociology
Zweimal Kyros
(2015)
«Kyros» taucht als Fürstenname dreimal in der Überlieferung des Perserreiches auf. Der Historiker Xenophon von Athen (427–ca. 355 v. Chr.) hat in seinen Schriften über zwei Träger dieses Namens berichtet und sie durchaus unterschiedlich bewertet: Kyros II. («der Große»), Mehrer des Reiches, sowie ein Jahrhundert später Kyros, Sohn des Dareios und jüngerer Bruder des Perserkönigs Artaxerxes II. Der ältere Kyros ist namengebender Protagonist eines Fürstenspiegels (der Kyropädie), wird also grundsätzlich positiv und als ein Vorbild für andere dargestellt. Am erfolglosen Kampf des jüngeren Kyros um die Krone des Perserreichs hatte Xenophon als Offizier griechischer Söldner selbst teilgenommen. Aus dem Vergleich von Darstellung und Bewertung der beiden Fürsten lassen sich die Ansprüche Xenophons an einen idealen Herrscher ableiten, was hier unternommen werden soll. Zugleich ermöglichen diese Ergebnisse, Xenophon als Historiker und politischen Denker in der zeitgenössischen Debatte um die beste Staatsform einzubetten.
Network Topology Discovery and Inventory Listing are two of the primary features of modern network monitoring systems (NMS). Current NMSs rely heavily on active scanning techniques for discovering and mapping network information. Although this approach works, it introduces some major drawbacks such as the performance impact it can exact, specially in larger network environments. As a consequence, scans are often run less frequently which can result in stale information being presented and used by the network monitoring system. Alternatively, some NMSs rely on their agents being deployed on the hosts they monitor. In this article, we present a new approach to Network Topology Discovery and Network Inventory Listing using only passive monitoring and scanning techniques. The proposed techniques rely solely on the event logs produced by the hosts and network devices present within a network. Finally, we discuss some of the advantages and disadvantages of our approach.
Processes having the same bridges as a given reference Markov process constitute its reciprocal class. In this paper we study the reciprocal class of compound Poisson processes whose jumps belong to a finite set . We propose a characterization of the reciprocal class as the unique set of probability measures on which a family of time and space transformations induces the same density, expressed in terms of the reciprocal invariants. The geometry of plays a crucial role in the design of the transformations, and we use tools from discrete geometry to obtain an optimal characterization. We deduce explicit conditions for two Markov jump processes to belong to the same class. Finally, we provide a natural interpretation of the invariants as short-time asymptotics for the probability that the reference process makes a cycle around its current state.
We discuss an intervention programme for kindergarten and school teachers' continuing education in Germany that targets biases against language outside a perceived monolingual ‘standard’ and its speakers. The programme combines anti-bias methods relating to linguistic diversity with objectives of raising critical language awareness. Evaluation through teachers' workshops in Berlin and Brandenburg points to positive and enduring attitudinal changes in participants, but not in control groups that did not attend workshops, and effects were independent of personal variables gender and teaching subject and only weakly associated with age. We relate these effects to such programme features as indirect and inclusive methods that foster active engagement, and the combination of ‘safer’ topics targeting attitudes towards linguistic structures with more challenging ones dealing with the discrimination of speakers.