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Spatial Layout (spatial + layout)

Distribution by Scientific Domains

Psychology	42%
Humanities and Social Sciences	28%

Selected Abstracts

Spatial variability of soil and nutrient characteristics of semi-arid grasslands and shrublands, Jornada Basin, New Mexico

ECOHYDROLOGY, Issue 1 2008
Eva Nora Mueller
Abstract Heterogeneity of vegetation and soil properties is characteristic of semi-arid and arid environments. The potential underlying causes of the dynamics that create this spatial variability, with consequent impacts on landscape connectivity and thus ecological and ecohydrological processes, are not clearly understood. An investigation was carried out into the spatial variability of ponded infiltration rate, soil moisture, soil-aggregate stability, vegetation cover, random roughness and nutrient content in the soil (ammonium, nitrate and phosphorus) at grassland and shrubland sites for two spatial scales in the Jornada Basin, in the northern part of the Chihuahua desert. At the plant-interplant scale, statistically significant differences exist between vegetated and non-vegetated sites for soil moisture and infiltration rate within both shrublands and grasslands. The spatial distributions of all other parameters follow a more complex scheme at this scale. At the landscape scale, distinct differences exist for most parameters between the grasslands and the shrubland sites. Geostatistical analysis revealed that the autocorrelation lengths are not simply a function of average shrub sizes, but may be caused by a more complex pattern probably related to the spatial layout of rill and inter-rill areas and other localized transfers of soil resources through the redistribution of water and wind. These results demonstrate the importance of understanding spatial linkages of processes within the landscape in understanding dryland ecosystem dynamics. Copyright © 2007 John Wiley & Sons, Ltd. [source]

PARADES, PUBLIC SPACE, AND PROPAGANDA: THE NAZI CULTURE PARADES IN MUNICH

GEOGRAFISKA ANNALER SERIES B: HUMAN GEOGRAPHY, Issue 4 2008
Joshua Hagen
ABSTRACT. As the birthplace of the Nazi Party and the official Capital of the Movement, Munich assumed a high profile within the party's propaganda apparatus. While Berlin became the political and foreign policy centre of Hitler's Reich and Nuremberg the site of massive displays of national power during the annual party rallies, national and local party leaders launched a series of cultural initiatives to showcase Munich as the Capital of German Art. Munich hosted numerous festivals proclaiming a rebirth of German art and culture, as well as the regime's supposedly peaceful intentions for domestic and international audiences. To help achieve these goals, Nazi leaders staged a series of extravagant parades in Munich celebrating German cultural achievements. The parades provided an opportunity for the regime to monopolize Munich's public spaces through performances of its particular vision of German history, culture and national belonging. While such mass public spectacles had obvious propaganda potential, several constraints, most prominently Munich's existing spatial layout, limited the parades' effectiveness. [source]

Spatial independent component analysis of functional MRI time-series: To what extent do results depend on the algorithm used?

HUMAN BRAIN MAPPING, Issue 3 2002
Fabrizio Esposito
Abstract Independent component analysis (ICA) has been successfully employed to decompose functional MRI (fMRI) time-series into sets of activation maps and associated time-courses. Several ICA algorithms have been proposed in the neural network literature. Applied to fMRI, these algorithms might lead to different spatial or temporal readouts of brain activation. We compared the two ICA algorithms that have been used so far for spatial ICA (sICA) of fMRI time-series: the Infomax (Bell and Sejnowski [1995]: Neural Comput 7:1004,1034) and the Fixed-Point (Hyvärinen [1999]: Adv Neural Inf Proc Syst 10:273,279) algorithms. We evaluated the Infomax- and Fixed Point-based sICA decompositions of simulated motor, and real motor and visual activation fMRI time-series using an ensemble of measures. Log-likelihood (McKeown et al. [1998]: Hum Brain Mapp 6:160,188) was used as a measure of how significantly the estimated independent sources fit the statistical structure of the data; receiver operating characteristics (ROC) and linear correlation analyses were used to evaluate the algorithms' accuracy of estimating the spatial layout and the temporal dynamics of simulated and real activations; cluster sizing calculations and an estimation of a residual gaussian noise term within the components were used to examine the anatomic structure of ICA components and for the assessment of noise reduction capabilities. Whereas both algorithms produced highly accurate results, the Fixed-Point outperformed the Infomax in terms of spatial and temporal accuracy as long as inferential statistics were employed as benchmarks. Conversely, the Infomax sICA was superior in terms of global estimation of the ICA model and noise reduction capabilities. Because of its adaptive nature, the Infomax approach appears to be better suited to investigate activation phenomena that are not predictable or adequately modelled by inferential techniques. Hum. Brain Mapping 16:146,157, 2002. © 2002 Wiley-Liss, Inc. [source]

Reading information graphics: The role of spatial contiguity and dual attentional guidance

APPLIED COGNITIVE PSYCHOLOGY, Issue 9 2009
Jana Holsanova
In a naturalistic newspaper reading study, two pairs of information graphics have been designed to study the effects of (a) the spatial contiguity principle and (b) the dual scripting principle by means of eye tracking measurements. Our data clearly show that different spatial layouts have a significant effect on readers' eye movement behaviour. An integrated format with spatial contiguity between text and illustrations facilitates integration. Reading of information graphics is moreover significantly enhanced by a serial format, resulting from dual attentional guidance. The dual scripting principle is associated with a bottom-up guidance through the spatial layout of the presentation, suggesting a specific reading path, and with a top-down guidance through the conceptual pre-processing of the contents, facilitating information processing and semantic integration of the material. The integrated and serial formats not only attract readers' initial attention but also sustain the readers' interest, thereby promoting a longer and deeper processing of the complex material. The results are an important contribution to the study of the cognitive processes involved in text-picture integration and offer relevant insights about attentional guidance in printed media, computer-based instructional materials and textbook design. Copyright © 2008 John Wiley & Sons, Ltd. [source]

The Development of Gaze Following

CHILD DEVELOPMENT PERSPECTIVES, Issue 2 2008
Chris Moore
ABSTRACT,Gaze following is a fundamental component of object-focused social interaction that researchers have studied as a manifestation of early psychological understanding. This article reviews recent research on manipulations of gaze cues, target salience, spatial layout, and social-interactive context. The development of gaze following through infancy is a dynamic system that should be studied using a combination of empirical and modeling approaches. [source]

New Spaces in Accra: transnational houses

CITY & SOCIETY, Issue 1 2003
Deborah Pellow
Accra has been Ghana's primate city since the British moved their administrative headquarters there in 1877. The city took shape under British site planning and like many colonial cities, it developed a spatial layout that distinguished different neighborhoods, such as the old core, the European section, and the Muslim zongo or stranger area. Accra's Sabon Zongo ("new zongo") was founded in the first decade of the 20th century, as a refuge for migrant Hausa who had been living in the original zongo in the city's core. House ownership continues to confer status in the community but there is little room left for building. Hausa transmigrants from Sabon Zongo have been going abroad and remitting money back home, largely to build homes in the new peri-urban margins of Accra. This paper focuses upon the latter phenomenon , the new styles of houses they are building, the process this involves, and how these styles may accommodate worldview, lifestyle and behaviors different from those with which these men were raised in Sabon Zongo. [transmigration, housing, Ghana] [source]