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The taxonomy of this genus is studied, three species of Eurycantha were chosen, E. horrida, E. coriacea and E. calcarata from which two subspecies were collected, termed and identified by the Phasmid Study Group: PSG 23 and PSG 44. Morphological characters and morphometrical data of the adults of E. calcarata PSG 23 and E. horrida as well as data on the ultrastructure and morphometrics of the eggs of all aforementioned species were obtained from this study to show differences and similarities between species and subspecies; partial 16S gene rRNA sequence was used to show genetic relationships between the species. / Similarities of the various wild populations of E. horrida were determined based on morphological and genetic data, showing that even though the species is distributed vastly between mainland Papua New Guinea and surrounding islands, characteristics vary little. Egg measurements varied more between subspecies of E. calcarata than between E. calcarata and E. coriacea; the mtDNA sequence equally showed higher intraspecific differences between E. calcarata subspecies than within E. horrida populations. Morphological and genetic data showed that E. horrida and E. calcarata are very closely related. Morphometric ratios between the two species were not significantly different, although there was a variance close to 6.2 percent in the mtDNA sequencing results. Genetic data and morphological characters of the egg showed that E. coriacea was the farthest removed species of those studied with a variance in mtDNA sequencing of 7.3 percent with E. calcarata and 6.8 percent with E. horrida.

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The question of the size and configuration of urban blocks and building footprints are vital to making a livable and sustainable city, with a sense of scale but also a sense of dialogue between elements. This dissertation documents the interface of public and private realms at the edge of the block and proposes a typology of block-faces. The block-faces respond to buildings (the internal load of blocks) and street structure (the external load of blocks). It is argued that the block-face and not the block should be the basis for thinking of city form. The City of Atlanta is used as a case study because of the spectrum of conditions and possibilities that it illustrates. The quantitative approach of this work builds upon a research tradition of analytical and quantitative urban and building morphology. A method is proposed for assessing the potential of the existing city prior to design intervention and for evaluating alternative scenarios for future developments. The ultimate goal is to provide tools to design more sustainable communities by bridging differences of scales and by better understanding how urban design parameters influence the development of built form and architecture.

Access to abstract restricted until 07/2016. / Department of Biology