Spatial Relationships Research Papers - Academia.edu (original) (raw)

We present the concept of volumetric depth-peeling. The proposed method is conceived to render interior and ex-terior iso-surfaces for a fixed iso-value and to blend them without the need to render the volume multiple times. The main... more

We present the concept of volumetric depth-peeling. The proposed method is conceived to render interior and ex-terior iso-surfaces for a fixed iso-value and to blend them without the need to render the volume multiple times. The main advantage of our method over pre-integrated ...

The Fourier phase spectrum plays a central role regarding where in an image contours occur, thereby defining the spatial relationship between those structures in the overall scene. Only a handful of studies have demonstrated... more

The Fourier phase spectrum plays a central role regarding where in an image contours occur, thereby defining the spatial relationship between those structures in the overall scene. Only a handful of studies have demonstrated
psychophysically the relevance of the Fourier phase spectrum with respect to human visual processing, and none have demonstrated the relative amount of local cross-scale spatial phase alignment needed to perceptually
extract meaningful structure from an image. We investigated the relative amount of spatial phase alignment needed for humans to perceptually match natural scene image structures at three different spatial frequencies [3, 6, and 12 cycles per degree (cpd)] as a function of the number of structures within the image (i.e., “structural sparseness”). The results showed that (1) the amount of spatial phase alignment needed to match structures depends on structural sparseness, with a bias for matching structures at 6 cpd and (2) the ability to match partially phase-randomized images at a given spatial frequency is independent of structural sparseness at other spatial frequencies. The findings of the current study are discussed in terms of a network of feature integrators in the human visual system.

Sesame (Sesamum indicum L.) is one of the ancient oil crops, grown in India since over 5,000 years ago. Diversity in the Indian sesame collection (3,129 accessions), representing all eco-geographical regions, for a range of morphological... more

Sesame (Sesamum indicum L.) is one of the ancient oil crops, grown in India since over 5,000 years ago. Diversity in the Indian sesame collection (3,129 accessions), representing all eco-geographical regions, for a range of morphological and agronomic characters was studied. Wide variation in plant habit (plant height and branching pattern), pubescence of various plant parts (stem, leaf, corolla and capsule), flower colour and number of flowers per leaf axil, capsule characteristics (shape, size, number in the axil of a leaf and number of locules in a capsule), number of capsules per plant, number of seeds per capsule, mean seed weight, and yield per plant was recorded. A detailed multivariate analysis was performed on a set of 100 selected accessions representing different agro-ecological zones. The accessions were classified into 7 discrete clusters. The principal components analysis described the spatial relationship among the entities and confirmed groupings obtained through clustering. Based on the clustering pattern of 100 accessions, the entire collection was allocated to different clusters. Representation of various zones in 7 clusters gives us the opportunity to form distinct diversity groups making combined use of passport and characterisation data. These diversity groups would subsequently be used for sampling the accessions for building up a core collection of sesame, a project already operative at the NBPGR.

... Opportunities to secure a regular job and income are of critical importance for integration of the squatter ... [22]Akbar HMD, Minnery JR, Horen BV, Smith P. Community Water Supply for the Urban Poor in ... Article | PDF (144 K) |... more

... Opportunities to secure a regular job and income are of critical importance for integration of the squatter ... [22]Akbar HMD, Minnery JR, Horen BV, Smith P. Community Water Supply for the Urban Poor in ... Article | PDF (144 K) | View Record in Scopus | Cited By in Scopus (6). ...

We present the case of F.G., a healthy, normally developed 22-year-old male subject affected by a pervasive disorder in environmental orientation and navigation who presents no history of neurological or psychiatric disease. A... more

We present the case of F.G., a healthy, normally developed 22-year-old male subject affected by a pervasive disorder in environmental orientation and navigation who presents no history of neurological or psychiatric disease. A neuro-radiological examination showed no evidence of anatomical or structural alterations to the brain. We submitted the subject for a comprehensive neuropsychological assessment of the different cognitive processes involved in topographical orientation to evaluate his ability to navigate the spatial environment. The results confirmed a severe developmental topographical disorder and deficits in a number of specific cognitive processes directly or indirectly involved in navigation.The results are discussed with reference to the sole previously described case of developmental topographical disorientation (Pt1; Iaria et al., 2009). F.G. differs from the former case due to the following: the greater severity of his disorder, his complete lack of navigational skills, the failure to develop compensatory strategies, and the presence of a specific deficit in processing the spatial relationships between the parts of a whole.The present case not only confirms the existence of developmental topographical-skill disorders, but also sheds light on the architecture of topographical processes and their development in human beings.

The Black Swan Succession is a bimodal association of dacitic and komatiitic volcanic rocks located about 50 km NNE of Kalgoorlie, within the 2.7-Ga Eastern Goldfields greenstone province of the Yilgarn Craton. The komatiite stratigraphy... more

The Black Swan Succession is a bimodal association of dacitic and komatiitic volcanic rocks located about 50 km NNE of Kalgoorlie, within the 2.7-Ga Eastern Goldfields greenstone province of the Yilgarn Craton. The komatiite stratigraphy comprises a steep dipping, east facing package about 700 m in maximum thickness and about 2.5 km in strike length (Fig. 1), which hosts a number of economically exploitable Ni sulphide orebodies including the Silver Swan massive ore shoot (approximately half a million tonnes at about 10.5% Ni). The sequence can be subdivided into a Lower Felsic Unit, comprising coherent and autobrecciated facies of multiple dacite lava flows; an upper Eastern and lower Western Ultramafic Unit, each showing marked lateral facies variation, and an Upper Felsic Unit coeval with the Eastern Ultramafic Unit. The komatiite sequence has been metamorphosed at sub-greenschist facies in the presence of high proportions of CO2-rich fluid, giving rise to pervasive talc–carbonate and talc–carbonate–quartz assemblages, with extensive preservation of pseudomorphed igneous textures. Cores of lizardite serpentinite are present in the thickest parts of the ultramafic succession. The degree of penetrative deformation is generally very low, and original stratigraphic relationships are largely intact in much of the sequence. The Eastern Ultramafic Unit and Western Ultramafic Unit are interpreted as components of a single large komatiite flow field, representing overlapping stages in the emplacement of a series of distributory lava pathways and flanking sheet flows. The Western Ultramafic Unit which hosts the bulk of the high-grade massive and disseminated ores is a sequence dominated by coarse-grained olivine cumulates, 2 km wide and up to 500 m thick, with major magma pathways represented by thick, homogenous olivine mesocumulate piles at its northern and southern ends: respectively 400 and 200 m thick. The sequence between the two major pathways consists of olivine orthocumulates (oOC) with minor spinifex-textured intervals. The Unit is capped by a persistent spinifex-textured crust less than 1 m thick, and is locally vesicular. The Eastern Ultramafic Unit contains the Black Swan Cumulate Zone, a 500-m thick sequence of very coarse-grained hopper-textured, locally vesicular oOC containing disseminated sulphides in its lower 200 m. The zone is flanked to the north and south by complexly interdigitated sequence of highly irregular, spinifex-capped, olivine cumulate-rich flow lobes between 1 and 100 m thick, and dacitic lavas and tuffs. The complexity of the 3-D spatial relationship of these units suggests a combination of simultaneous eruption of dacite and komatiite, combined with thermal or thermomechanical erosion. The Eastern and Western Units are interpreted as the result of more or less continuous prolonged eruption of olivine charged komatiite lava, which developed localised thermo-mechanical erosion channels in the dacitic substrate. Komatiite and dacite eruption was synchronous, giving rise to complex interdigitation and extensive contamination and hybridisation.

Outline for a case study project on HOUSES for a first year Architecture Design Studio, focusing on 20 built works.

In the 1970s and 1980s, regional analysis was an influential part of archaeological research, providing a discrete set of geographical tools inspired by a processual epistemological and interpretive perspective. With the advent of new... more

In the 1970s and 1980s, regional analysis was an influential part of archaeological research, providing a discrete set of geographical tools inspired by a processual epistemological and interpretive perspective. With the advent of new technologies, new methods, and new paradigms, archaeological research on regional space has undergone significant changes. This article reviews the state of regional archaeology, beginning with a consideration of its history and a discussion of the fundamental issues facing regional investigations before focusing on developments over the last several years. On one hand, the diversification of archaeological theory has created new paradigms for thinking about human relationships with one another and with the physical environment across regional space; in this regard, historical ecology, landscape archaeology, and evolutionary theory have been particularly influential in recent years. This has led to a corresponding diversification of the traditional methods of regional analysis. Most notably, the advent of powerful digital technologies has introduced new tools, especially those from the geographic information sciences, that build on the quantitative methods of past approaches. The investigation of regional data is no longer based on a discrete toolkit of simple mathematical and graphical procedures for representing spatial relationships. Instead, regional archaeology has matured into a diversity of multiscalar spatial and geostatistical techniques that inform many areas of archaeological inquiry.

Drawing on practical experiences of almost 15 years working within Gauteng Province and the City of Johannesburg my paper will focus on the location of poor communities within Johannesburg in relation to selected Inner-City areas and... more

Drawing on practical experiences of almost 15 years working within Gauteng Province and the City of Johannesburg my paper will focus on the location of poor communities within Johannesburg in relation to selected Inner-City areas and public transportation networks. The introduction notes the historical foundations and spatial legacies of the City (for example, the mining industry, pre and post apartheid doctrines and migration patterns). It acknowledges that these foundations, legacies and future characteristics City are shaped by diverse and complex rationalities that are frequently misunderstood or contradictory. As an example, the paper highlights contradictions and challenges resulting from the conventional, post-1994, housing supply rationale with the demands and needs of low income communities. A working definition of the “urban poor” within the City is proposed; the definition premised on Household Income and Unemployment Indicators. The paper considers the means and location...

Land Surface Temperature (LST) and Land Use Land Cover (LULC) are the principal aspects of climate and environment studies. The object of the study is to assess spatial relationship between LST and remote sensing LULC indices at the... more

Land Surface Temperature (LST) and Land Use Land Cover (LULC) are the principal aspects of climate and environment studies. The object of the study is to assess spatial relationship between LST and remote sensing LULC indices at the global and continental scale. Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua daytime LST and eight LULC MODIS indices of 2018 prepared and processed using Earth Engine Code Editor. R squared and significance of the relationship values of randomly selected points computed in R program. The research observed the relationship between examined indices and LST is significant at the 0.001 level. Normalized Difference Water Index (NDWI) and Normalized Difference Snow Index (DSI) are the dominant drivers of LST in the world, Asia and

Modern cartography has the ability to map almost any phenomenon for which spatial relationships are of primary relevance. While existing cartographic products cover already an enormous variety of topics, the visualisation of ‘other’... more

Modern cartography has the ability to map almost any phenomenon for which spatial relationships are of primary relevance. While existing cartographic products cover already an enormous variety of topics, the visualisation of ‘other’ geographies gains more and more attention. These other geographies may not accord to the ‘normal’ spaces usually mapped, hence cartography is both challenged and forced to find uncommon solutions. Literature and its fictional spaces might serve as a fi ne example (but one could also think of soundscapes or emotions). Doubtlessly, the realm of fiction is defined by different ‘rules’ to the geography that cartography customarily addresses. This paper deals with two main questions: Firstly, how to map narratives and their complex spatial structure? Secondly, what do we achieve by mapping literature? By searching for some (provisional) answers, the horizon of a promising interdisciplinary research field – a future literary geography – becomes visible.

Özet Mekan ilişkilerini esas alan bölgesel coğrafya çalişmalarina bir örnek olarak hazirlanan bu makalede; Güneydoğu Anadolu platolari kuzeyini çevreleyecek biçimde bir yay çizen Güneydoğu Toroslar ele alinmiştir. Genel hatlariyla... more

Özet Mekan ilişkilerini esas alan bölgesel coğrafya çalişmalarina bir örnek olarak hazirlanan bu makalede; Güneydoğu Anadolu platolari kuzeyini çevreleyecek biçimde bir yay çizen Güneydoğu Toroslar ele alinmiştir. Genel hatlariyla birbirine paralel uzanan dağ siralari ve bunlarin arasina yerleşmiş vadiler ile küçük düzlüklerden oluşan Güneydoğu Toroslar; iklim, bitki örtüsü, yetiştirdiği ürünler ve yaşayiş biçimi bakimindan çevresindeki diğer alanlardan ayrilir. Kendine özgü

Mamluk sultans were known for their patronage of the arts and architecture. Their educational institutions were among the wide array of architectural projects that linked them as ruling elites to the religious scholars of their times.... more

Mamluk sultans were known for their patronage of the arts and architecture. Their educational institutions were among the wide array of architectural projects that linked them as ruling elites to the religious scholars of their times. Their tombs were placed in a mausoleum attached to their educational-religious complexes to attest to their legacy. The evolution of their buildings such that both educational and memorial functions are integrated with the dense surroundings is scrutinized through chronological-spatial analysis. The configuration of the built form, the disposition of its boundaries, its patterns of accessibility, and its visual properties are the features that present the buildings to one's experience and bring certain perceptions into play. In this study, various spatial descriptor tools of space syntax are employed to analyze the data of 14 Mamluk examples (1260-1517A.D.) and capture the differences in the experience where the expression is preserved. Analyses of the configurational characteristics, axial attributes, visibility structures, and isovists highlight how the spatial and formal properties of the layouts were used to express certain representational relationships. The advantages of combining different spatial investigations allows for understanding historical design principles and how the geometry of forms could hide in its abstract rules, conceptual and perceptual qualities. & 2015 The Authors. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Kibbutz Kfar Giladi and the Development town of Kiryat Shmona represent each a form of settlement and groups of social-cultural identity in Israeli society. The paper analyzes the interactions of the two adjacent settlements, their... more

Kibbutz Kfar Giladi and the Development town of Kiryat Shmona represent each a form of settlement and groups of social-cultural identity in Israeli society. The paper analyzes the interactions of the two adjacent settlements, their formation and transformations, including the socioeconomic factors that stood at their core: The involvement of Kfar Giladi settlers in the creation of Kiryat Shmona, the mobilization efforts of members to adopt the transit camp (Maabarah), the work relations between the two communities and their associated conflicts, as well as the issue of fair land distribution. All these factors were examined against the backdrop of local conditions and economic processes that played out in Israeli society and were conducive to their establishment. The article unfolds a tale of distance and proximity, presence and absence among the two entities that are distinct at nearly every level. The interpersonal, ongoing and natural relationships were relatively sparse but at the same time every settlement was involved in the life of its neighboring community and above all, played the role of "the other" as the identity of the nearby new community was taking shape.