We consider the problem of choosing the location of a public facility either (a) on a tree network or (b) in a Euclidean space. (a) (1996) characterize the class of target rules on a tree network by Pareto efficiency and population-monotonicity. Using Vohra's (1999) characterization of rules that satisfy Pareto efficiency and replacement-domination, we give a short proof of the previous characterization and show that it also holds on the domain of symmetric preferences. (b) The result obtained for model (a) (...) proves to be crucial for the analysis of the problem of choosing the location of a public facility in a Euclidean space. Our main result is the characterization of the class of coordinatewise target rules by unanimity, strategy-proofness, and either replacement-domination or population-monotonicity. (shrink)
We consider two-sided matching markets with couples. First, we extend a result by Klaus and Klijn (J Econ Theory 21: 75–106, 2005, Theorem 3.3) and show that for any weakly responsive couples market, there always exists a “double stable” matching, i.e., a matching that is stable for the couples market and for any associated singles market. Second, we show that for weakly responsive couples markets, the associated stable correspondence is (Maskin) monotonic and Nash implementable. In contrast, the correspondence that (...) assigns all double stable matchings is neither monotonic nor Nash implementable. (shrink)
IntroductionSpatial navigation is a complex cognitive function that declines in older age. Finding one’s way around in familiar and new environments is crucial to live and function independently. However, the current literature illustrates the efficacy of spatial navigation interventions in rehabilitative contexts such as pathological aging and traumatic injury, but an overview of existing training studies for healthy older adults is missing. This scoping review aims to identify current evidence on existing spatial navigation interventions in healthy older adults and analyze (...) their efficacy.MethodsTo identify spatial navigation interventions and assessments and investigate their effectiveness, four electronic databases were searched. Two independent reviewers conducted a screening of title, abstract and full-texts and performed a quality assessment. Studies were eligible if published in English, the full text was accessible, at least one group of healthy older adults was included with mean age of 65 years or older, three or more spatial navigation-related training sessions were conducted and at least one spatial ability outcome was reported.ResultsTen studies were included, only healthy older adults were assessed further. Studies differed in sample size, type of training, total intervention duration, and intervention period.ConclusionThe spatial navigation abilities addressed and the measures applied to elicit intervention effects varied in quantity and methodology. Significant improvements were found for at least one spatial ability-related outcome in six of 10 interventions. Two interventions achieved a non-significant positive trend, another revealed no measurable post-training improvement, and one study did not report pre-post-differences. The results indicate that different types of spatial navigation interventions improve components of spatial abilities in healthy older adults. The existing body of research does not allow conclusions on transferability of the trained components on everyday life spatial navigation performance. Future research should focus on reproducing and extending the promising approaches of available evidence. From this, valuable insights on healthy aging could emerge.Trial RegistrationThis scoping review was preregistered at Open Science Framework. (shrink)
This Inspirational Guide To An Open, Critical Exchange Between India And The West Is Framed As A Tribute To Dr. Bettina Baumer, An Eminent Scholar Of Indology. Comprising 32 Essays, Segregated Into Three Sections Indian Philosophy And Spirituality, Indian Arts And Aesthetics, And Interreligious And Intercultural Dialogue.
“Hegel and scepticism” remains an intriguing topic directly concerning the logical and methodological core of Hegel’s system. A series of contributions is unfolding around a keynote paper by Klaus Vieweg, which tries to understand and restate the limits and the content of the relationship between Hegels philosophy and scepticism. Various Hegel readers with different concerns are dealing with Hegel’s strategy in a large range of theoretical areas.
Angesichts der gegenwärtigen ökonomischen, ökologischen und sozialen Krisen zeichnet sich ab, dass die Wachstumsdynamik moderner Gesellschaften nicht mehr stabilisierend wirkt, sondern selbst zum Krisentreiber geworden ist. In diesem Band diskutieren die Philosophin Nancy Fraser und die Soziologen Klaus Dörre, Stephan Lessenich und Hartmut Rosa, was dies für die Gegenwart und die Zukunft der Demokratie bedeutet und welche Konzeptionen und Wege hin zu einer demokratischen Transformation vorstellbar sind. Aus ihrer demokratietheoretischen Perspektive intervenieren Viviana Asara, Banu Bargu, Ingolfur Blühdorn, Robin Celikates, (...) Lisa Herzog, Brian Milstein, Michelle Williams und Christos Zografos. (shrink)
The representation of history continues to evolve in the domain of museum exhibitions. This evolution is informed in part by the creation of new display methods—many of which depart from the traditional conventions used to achieve the “museum effect”—in part by an increased attention to the museum–visitor relationship. In this context the ethical force of bearing witness, at times a crucial aspect of the museum experience, has emerged as a particularly compelling issue. In seeking to represent and address atrocity, injustice, (...) and the abrogation of human rights, museums have the potential to become “sites of conscience” and to encourage “historical consciousness.” Through a series of three exhibitions devoted to slavery, the New-York Historical Society demonstrated how such sites can be constructed and how objects can be deployed to represent extreme or “limit cases.” In this review/essay I investigate and interrogate these exhibitions, looking closely at the use of objects as a source of “indirect testimony” and at the “dialogical situation” that might arise in an encounter among objects, exhibit narratives, and visitors. Thinking in terms of point of view, I look at the variety of rhetorical platforms from which objects speak in these exhibitions; thinking in terms of syntax, I look at the effects of ordering and of the radical juxtaposition of objects; thinking in terms of irony, I look at the provocations of double-voiced narratives and at how objects are used to support those historical sentences. (shrink)
The term ‘locked-in’ syndrome (LIS) describes a medical condition in which persons concerned are severely paralyzed and at the same time fully conscious and awake. The resulting anarthria makes it impossible for these patients to naturally communicate, which results in diagnostic as well as serious practical and ethical problems. Therefore, developing alternative, muscle-independent communication means is of prime importance. Such communication means can be realized via brain–computer interfaces (BCIs) circumventing the muscular system by using brain signals associated with preserved cognitive, (...) sensory, and emotional brain functions. Primarily, BCIs based on electrophysiological measures have been developed and applied with remarkable success. Recently, also blood ﬂow–based neuroimaging methods, such as functional magnetic resonance imaging (fMRI) and functional near-infrared spectroscopy (fNIRS), have been explored in this context. After reviewing recent literature on the development of especially hemodynamically based BCIs, we introduce a highly reliable and easy-to-apply communication procedure that enables untrained participants to motor-independently and relatively effortlessly answer multiple-choice questions based on intentionally generated single-trial fMRI signals that can be decoded online. Our technique takes advantage of the participants’ capability to voluntarily inﬂuence certain spatio-temporal aspects of the blood oxygenation level–dependent (BOLD) signal: source location (by using different mental tasks), signal onset and offset. We show that healthy participants are capable of hemodynamically encoding at least four distinct information units on a single-trial level without extensive pretraining and with little effort. Moreover, realtime data analysis based on simple multi-ﬁlter correlations allows for automated answer decoding with a high accuracy (94.9%) demonstrating the robustness of the presented method.. (shrink)
Buddhist traditions are heir to some of the most creative thinkers in world history. The Lives of the Masters series offers lively and reliable introductions to the lives, works, and legacies of key Buddhist teachers, philosophers, contemplatives, and writers. Each volume in the Lives series tells the story of an innovator who embodied the ideals of Buddhism, crafted a dynamic living tradition during his or her lifetime, and bequeathed a vibrant legacy of knowledge and practice to future generations.