Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 70 for “"Caterpillar"”.
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The effect of aphids in parasitoid-caterpillar-plant interactions
… in moth oviposition, but the proportion of caterpillars attacked by parasitoids was inversely density dependent with hornworm density. Chapter 3 examined whether changes in hornworm abundance and parasitism reflected aphid-induced changes in host plant quality or volatile emissions. Aphids …
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An Investigation into the Ecology and Evolution of Caterpillar Eyespots
… widespread and diverse in lepidopteran caterpillars, and these caterpillars with eyespots are typically assumed to be snake-mimics. Yet a dearth of empirical investigation has left us without evidence that eyespots can protect caterpillars, or the ability to substantiate our subjective …
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Bionomics Of The Walnut Caterpillar, Datana Integerrima G. & R
Made available in DSpace on 2014-12-14T07:04:03Z (GMT). No. of bitstreams: 1 7820929.pdf: 4410810 bytes, checksum: 6307cc2db1c30c9af38bbb344e226d1d (MD5) Previous issue date: 1978
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Employee integration and automation : a study at Caterpillar Tractor Company, Peoria, Illinois
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1981.
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Automation and internal labor market structure : a study of the Caterpillar Tractor Company
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1981
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Study of the role of Strategically Managed Inventory (SMI) in the Caterpillar supply chain
… an inventory replenishment process deployed by Caterpillar that blends elements of Vendor Managed Inventory (VMI) and Collaborative Planning, Forecasting, and Replenishment (CPFR). The SMI process calls for Caterpillar's suppliers to control the material replenishment process and hold inventory …
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Cool as a caterpillar: Understanding the responses of butterflies to temperature across the life cycle
Anthropogenic effects, including land-use and climate change, have had dramatic and wide-ranging impacts on the natural world. The impacts of these changes have already been detected in many systems, with global biodiversity and abundance of many taxa declining across spatial scales. The loss of …
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Characterization of a hostplant-inducible cytochrome P450 from the black swallowtail caterpillar, Papilio polyxenes (Lepidoptera: Papilionidae)
Cytochrome P450 monooxygenases (P450s) function in the oxidation of countless xenobiotic and endogenous substrates, and are among the most important enzymes utilized by herbivores in detoxifying plant defensive compounds. This thesis describes the identification and molecular cloning of a P450 …
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Improve the lead time for the medium wheel loader using core configuration and delayed product differentiation
… supply chain model to improve the lead time for Caterpillar Medium Wheel Loaders in the North America market. The Medium Wheel Loaders division is undergoing many commercial value chain challenges: long lead time to dealers, high demand variability and high degree of configuration complexity. The …
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Moths & Legends The contribution of chitoumou, the edible caterpillar Cirina butyrospermi, to food security, agriculture and biodiversity in a low-intensity agroforestry system
… butyrospermi), the commonly consumed shea caterpillar harvested from agroforestry systems in Burkina Faso, West Africa. I begin this thesis with a review of the role of edible insects in agricultural systems worldwide. Though certain insects are currently touted for commercial scale …
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Jogos combinatórios em grafos: jogo Timber e jogo de Coloração
… We determine the number of P-positions in three caterpillar families and a lower bound for the number of P-positions in any caterpillar. Moreover, we prove that a tree has P-positions if, and only if, it has an even number of edges. In the coloring game, Alice and Bob take turns properly coloring …
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Weld inspection process improvement
… the weld inspection process in one factory at Caterpillar through the implementation of phased array ultrasonic testing. The chosen factory fabricates and machines large weldments for track-type tractors. The industry trend towards lighter weight, lower cost, higher performance structures …
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A systems view of quality
Caterpillar, a leading manufacturer of construction and mining equipment, diesel and natural gas engines and industrial gas turbines, is committed to continually improving the quality of their products. Caterpillar currently employs many of the well-known quality techniques, such as statistical …
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Creating a corporate strategy for utilizing supply chain simulation, optimization and visualization
… analysis of a major U.S. manufacturing company, Caterpillar, Inc., was conducted and a new framework was applied to understand Caterpillar's usage of supply chain programs. This thesis utilizes findings from Caterpillar as a sample case to reinforce research. An overall strategy is developed …
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Mechanical design of a Stewart platform-based crawling vehicle
… of man and animals. Insects such as the caterpillar move with fixed legs and an articulated torso. They too can traverse rough terrain but do so with greater stability than bipeds or quadrupeds. This thesis presents a design for a caterpillar-like crawling vehicle. An overview of the …
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Spring Phenology and Trophic Ecology of Trees, Caterpillars, and Migrating Neotropical -Nearctic Songbirds
… the trophic ecology of forest trees, caterpillars, and wood warblers (Parulidae) and vireos (Vireonidae) during spring migration in 2001--2003 at Trelease Woods, a deciduous forest fragment near Urbana, Illinois, USA (40°09'N, 88°10'W). I hypothesized that (1) the …
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Revision of Xanthomicrogaster Cameron, 1911 (Hymenoptera: Braconidae: Microgastrinae)
… been collected, both through Malaise traps and caterpillar rearing. In addition to these specimens, borrowed material of undescribed Xanthomicrogaster species from the Canadian National Collection (CNC) and Texas A&M University insect collection (TAMU) is examined in order to understand the …
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Mycotoxins Risk in Maize Fields in Relation to Insect and Edaphic Factors in South Dakota
… eastern South Dakota during 2008 through 2010. Caterpillar abundance and kernel damage were positively related to fumonisin and aflatoxin concentrations in conventional maize in carbaryl treated and untreated plots. However in Bt maize, only deoxynivalenol concentrations were positively related …
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