Modeling human-bed interaction: the predictive value of anthropometric models in choosing the correct bed support

The sleep system (i.e. the combination of mattress and bed base) is an important factor of the sleep environment since it allows physical recuperation during sleep by providing proper body support. However, various factors influence the interaction between the human body and the sleep system. Contributing factors include body dimensions, distribution of body weight and stiffness of the sleep system across the mattress surface. During the past decade, the rise of several new bedding technologies has made it increasingly difficult for the consumer to select a proper sleep system. Therefore, this study presents a method to model human-bed interaction in order to objectively predict the ideal sleep system for a particular individual. The proposed method combines a personalized anthropometric model with standardized load-deflection characteristics of mattress and bed base. Results for lateral sleep positions show a root mean square deviation of 11.9 ± 6.1 mm between modeled spine shapes and validation shapes, derived from 3D surface scans of the back surface. The method showed to be a reliable tool to individually identify the sleep system providing superior support from a variety of possible mattress-bed base combinations.     

Great Middle Eastern instability: Structural roots and uneven modernization 1960-2012

The paper deals with the structural roots of political instability in the Middle East that has been manifested by the Arab Spring throughout the region since early 2011. The roots of the instability are seen in cumulative effects of highly uneven long-term social change in its three main dimensions since 1960s: (1) rapid social and demographic changes, (2) slower and fluctuating economic development, and (3) rigid political subsystem. The Middle Eastern uneven social change is also under way in a specific (4) cultural and (5) international context. The political instability is thus seen as a consequence of multiple and complex interactions among various dimensions of uneven modernisation process, Islamic political imagination and the international context. The paper deals with the interactions on the macro-level and with its politically destabilizing consequences on micro-level using selected examples of causal mechanisms. The Middle Eastern uneven modernisation pattern is systematically documented by empirical macro-indicators and is compared with the modernisation process in other post-colonial world macro-regions.     

Are clinician's ever biased in their judgments of the capacity of older adult's to make medical decisions?

Capacity assessment is a growing area of practice in geriatrics. In this pilot study we illustrate the potential relationship between clinician variables and capacity ratings. Twelve older adults with mild dementia or schizophrenia were rated by six clinicians from diverse disciplinary backgrounds. Capacity ratings were associated with clinician values regarding patient involvement in medical decisions, clinician-patient mismatches on such values, and emotional reactions to patients. Expanding our understanding of the impact of clinician variables on capacity ratings may enhance the reliability and validity of capacity assessments and help to promote autonomy when appropriate.     

The contextualization of definitions of religion

The author insists on the need to take the social-structural context into account to evaluate the existing types of definitions of religion. Proposing a definition for the Western hemisphere, he then checks his definition against sociological studies referring to ‘new types of religiosity’ and concludes that sociologists should differentiate between meaning systems – of which religion is a sub-division – and spiritualities. In a second step, he discusses two sociological theories about religion and insists that sociologists should be more careful in using such theories by taking into consideration the type of religion the theory is concerned with. Finally, he suggests that rational choice theory and secularization theory might well be integrated and applied in a European context if we move to the level of the competing existing meaning systems.     

Those Who Pay the Piper Calls the Tune: Meta-Organisation and Capacities of the Third Sector in Migration Policies

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - In this paper, we examine the changing landscape of migration policy work conducted by civil society organisations (CSOs)...     

Independence in Contingency Tables Using Simplicial Geometry

Frequently, contingency tables are generated in a multinomial sampling. Multinomial probabilities are then organized in a table assigning probabilities to each cell. A probability table can be viewed as an element in the simplex. The Aitchison geometry of the simplex identifies independent probability tables as a linear subspace. An important consequence is that, given a probability table, the nearest independent table is obtained by orthogonal projection onto the independent subspace. The nearest independent table is identified as that obtained by the product of geometric marginals, which do not coincide with the standard marginals, except in the independent case. The original probability table is decomposed into orthogonal tables, the independent and the interaction tables. The underlying model is log-linear, and a procedure to test independence of a contingency table, based on a multinomial simulation, is developed. Its performance is studied on an illustrative example.