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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
141

A indústria de máquinas e implementos agrícolas no Rio Grande do Sul: um estudo sobre a trajetória recente do setor

Spat, Marilise Dorneles 28 August 2013 (has links)
Submitted by Maicon Juliano Schmidt (maicons) on 2015-07-15T18:06:47Z No. of bitstreams: 2 Marilise Dorneles Spat.pdf: 669825 bytes, checksum: ce2075f8e539065fbf50f7d1c5cba5ae (MD5) Marilise Dorneles Spat.pdf: 669825 bytes, checksum: ce2075f8e539065fbf50f7d1c5cba5ae (MD5) / Made available in DSpace on 2015-07-15T18:06:47Z (GMT). No. of bitstreams: 2 Marilise Dorneles Spat.pdf: 669825 bytes, checksum: ce2075f8e539065fbf50f7d1c5cba5ae (MD5) Marilise Dorneles Spat.pdf: 669825 bytes, checksum: ce2075f8e539065fbf50f7d1c5cba5ae (MD5) Previous issue date: 2013-08-28 / Nenhuma / O objetivo do estudo foi analisar a trajetória recente da indústria de Máquinas e Implementos Agrícolas no Rio Grande do Sul, no período 1995-2010. Como metodologia, além da revisão bibliográfica, utilizou-se o Quociente Locacional (QL), empregado como indicador relativo de especialização, a partir da base de dados RAIS/MTE. Além disso, foram analisadas as variáveis produção e vendas internas no atacado, com base em ANFAVEA, e exportações, a partir de MDIC. Como resultados, observou-se que as mudanças no padrão de competitividade dessa indústria estão relacionadas às alterações geradas pela introdução de inovações tecnológicas nos produtos e processos deste segmento. Em relação ao número de estabelecimentos e de empregados, houve crescimento no decorrer do período, com destaque para a região noroeste do estado. No que se refere à especialização produtiva, pode-se afirmar que o setor constitui-se como polo relativo de especialização no Rio Grande do Sul e no noroeste do estado. A produção, as vendas internas e as exportações apresentaram evolução em todo o período analisado, com exceção do ano de 2005, devido à crise climática enfrentada pelo setor agrícola. Confirma-se, assim, a importância do Rio Grande do Sul e da região noroeste na produção nacional de Máquinas e Implementos Agrícolas. / The aim of the study was to analyze the recent trajectory of Agricultural Machinery and Implements in Rio Grande do Sul, in the period 1995-2010. As methodology, beyond the literature review, we used the location quotient (LQ), used as a relative indicator of expertise, from the database RAIS / MTE. Furthermore, were analyzed the production variables and domestic sales in wholesale based on ANFAVEA, and exports from MDIC. As results, it was observed that changes in the pattern of competitiveness of this industry are related to the changes generated by the introduction of technological innovations in products and processes in this segment. Regarding the number of establishments and employees, there was a increase during the period, with emphasis on the northwestern region of the state. With regard to production specialization, it can be stated that the sector is constituted as a center of expertise on the Rio Grande do Sul and in the northwest of the state. The production, domestic sales and exports showed progress throughout the period analized, with the exception of 2005, due to the climate crisis faced by the agricultural sector. It is confirmed, thus the importance of Rio Grande do Sul and the northwest in the national Agricultural Machines and Implements.
142

An analysis of stone tool use in the Maya coastal economies of Marco Gonzalez and San Pedro, Ambergris Caye, Belize /

Stemp, William James. January 2000 (has links)
No description available.
143

North Umpqua end scrapers : allometry, discard, and residual utility

Kelly, Christopher J. 15 December 2004 (has links)
End scrapers were an "all purpose" tool that have been associated with processes such as planing or shaving vegetal resources, shaping bone or antler implements, and to render hide into usable fabric. Examining end scrapers from four different archaeological sites on the North Umpqua River of southwestern Oregon provided interesting data regarding the use of these tools over time. Each site consists of at least one, or several, occupational components providing an opportunity to compare similarities and differences between sites. Analyses rely in part on the comparison of multi-dimensional characteristics, or allometry, of the stone tools. Statistically, the relationship between the length of an end scraper and its thickest point has been previously suggested to be demonstrative of the original size of the tool. A similar conclusion was acquired during this analysis, which then sought to determine if a discard ratio for each site could be established based on the length and edge angle of the end scrapers. The discard ratio was originally thought to represent a reflection of functional efficiency, differential resource processing, or material availability. A bulk analysis of material types from the overall assemblages and a comparison of end scraper composition suggested intensive use of obsidian, the non-local material. Overall, trends could not be demonstrated using the discard ratio to represent the degree of use as end scrapers size depends on lithic technology, material availability, and perhaps a specific need. Perhaps the most intriguing outcome of this study relates to the individual Middle Archaic component at the Meg's Keep site. Based on the large obsidian artifact assemblage, this site is thought to have been a task specific location and that the large number of end scrapers recovered were manufactured elsewhere and imported to the site. Comparing end scrapers at each site suggested that Type 1 scraper (≥7.5 mm) may be an indicator of curation. The analyses indicate that Type 1 CCS end scrapers at Canton Creek, Dry Creek, and Boulder Confluence out-numbered Type 3 scrapers 20 to 4. In contrast, the large number of end scrapers at Meg's Keep had a total of 9 Type 1 end scrapers. From the above data, Type 1 and Type 3 end scrapers appear to be a direct result of the availability of raw material and potentially an indicator of curation. / Graduation date: 2005
144

Prehistoric patterns of economic and technological behavior reflected in the 2004 lithic assemblage of site J69E, Espiritu Santo Island, Baja California Sur /

Ferrell, Luanne R. January 1900 (has links)
Thesis (M.A.)--Oregon State University, 2007. / Printout. Includes bibliographical references (leaves 159-163). Also available on the World Wide Web.
145

Airfoil Boundary Layer Calculations Using Interactive Method And En Transition Prediction Technique

Mersinligil, Mehmet 01 September 2006 (has links) (PDF)
Boundary layer calculations are performed around an airfoil and its wake. Smith-van Ingen transition prediction method is employed to find the transition from laminar to turbulent flow. First, potential flow around the airfoil is solved with the Hess-Smith panel method. The resulting velocity distribution is input to the boundary layer equations in order to find a so called blowing velocity distribution. The output of the boundary layer equations are also used to compute the location of onset of transition using the Smith-van Ingen en transition prediction method. The obtained blowing velocity distribution is fed back to the panel method to find a velocity distribution which includes the effects of viscosity. The procedure described is repeated until convergence is observed. A computer program is developed using the theory. Results obtained are in good accord with measurements
146

Order Driven Flexible Shop Management

Bulut, Aykut 01 July 2011 (has links) (PDF)
The difficulties in responding to variation in product order mixes and load levels effectively in make to order are known. Most of the existing approaches consider releasing jobs to the shop (input control), changing capacity levels (output control) in a controlled way, order acceptance with different definitions of work load and due date assignment. Controlling the processes, routing options and the order accepting capacity with various tool combinations that will decrease tool loading are not considered properly. However the manufacturing flexibility provided by the computer numerically controlled (CNC) machines, provides both part variety and due date achievement given a reasonable extra capacity. Positive effects of flexibility on the due date achievement of the make to order is shown with a variety of experimental and field studies leaving little doubt. However taking flexibility only as a strategic issue and not considering it as a means of planning and management in either the short term or medium term decisions have been commonplace practice. In this study, benefits of providing three kinds of flexibility, considering order pool and acceptance probability of the new arrivals in a periodic setting, is the focal issue. If the required flexible environment is provided, the necessity to make a detailed job loading, route planning and scheduling will be reduced to a low level and a high shop congestion and due date achievement will be realized simultaneously. A typical realistic shop with a scaled part mix is assumed in the flexibility management modeling and simulation experiments are conducted applying periodical flexibility planning approach. These experiments briefly support the ideas that worth of anticipation is more than plain expectations and flexibility improves robustness.
147

Archaeology and the application of artificial intelligence : case-studies on use-wear analysis of prehistoric flint tools /

Dries, Monique Henriëtte van den, January 1998 (has links)
Thesis (Ph. D.)--Rijksuniversiteit te Leiden, 1998. / "Stellingen" ([1] leaf) inserted. Includes bibliographical references (p. 187-193). Also available online.
148

SURFACE CONTEXT, CONTEMPORANEITY AND CULTURAL TRADITION: CHIPPED STONE TOOLS FROM THE SIERRA PINACATE, SONORA, MEXICO

Rosenthal, E. Jane January 1979 (has links)
No description available.
149

An analysis of stone tool use in the Maya coastal economies of Marco Gonzalez and San Pedro, Ambergris Caye, Belize /

Stemp, William James. January 2000 (has links)
The Maya sites of Marco Gonzalez and San Pedro are located on the southern end of Ambergris Caye, a limestone-based coral island off the coast of modern-day Belize. When combined, the archaeological settlements at these sites represent some of the longest occupations in coastal Belize. Evidence suggests the earliest occupation occurred at Marco Gonzalez in the Late Preclassic and extended into the Late Postclassic, while San Pedro's population thrived well into the Historic period. An analysis of the stone tools recovered from excavations at Marco Gonzalez and San Pedro and a study of the use-wear patterns on these artifacts has revealed that the Maya from both sites were primarily engaged in subsistence-based activities with a limited amount of small-scale craft production. Use-wear evidence suggests that the majority of these activities focused on the exploitation of local resources necessary in everyday Maya life. The activities included the acquisition of seafoods such as fish and molluscs, and the preservation and/or processing of fish and other marine by-products, such as shell, coral, and stingray spines for both local use and trade. As consumer sites, the Caye inhabitants offered many of these products in exchange for stone tools produced in mainland workshops, such as Colha, in the 'chert-bearing zone' of Northern Belize. In addition to the local and regional trade of marine resources and salt, the sites of Marco Gonzalez and San Pedro served as transshipment points for the long-distance exchange of valuable wealth or prestige goods along the coast. The large inland site of Lamanai likely served as ally and trade partner with these sites based on archaeological evidence for socioeconomic and sociopolitical ties between this mainland centre and the smaller Caye settlements. This relationship assisted the Maya from southern Ambergris Caye in surviving the breakdown in trade relations and depopulation that plagued other Maya centres in the Late to Terminal
150

Upper Palaeolithic and Epipalaeolithic lithic technologies at Raqefet Cave, Mount Carmel East, Israel /

Lengyel, Györgyi. January 2007 (has links)
Teilw. zugl: Diss. u.d.T.: Lengyel, Györgyi: Lithic technology of the Upper Palaeolithic and Epipalaeolithic of Raqefet Cave, Mount Carmel, Israel.

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