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Dissertations / Theses on the topic 'Harvesting operations'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Jones, Blake. "Effect of landing size on operational delays for New Zealand harvest operations." Thesis, University of Canterbury. School of Forestry, 2013. http://hdl.handle.net/10092/9696.

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Landings are an integral part of New Zealand Harvest operations where extracted trees are processed into logs and loaded out onto trucks. Forest owners need to balance the cost and environmental considerations when designing and constructing landings, with the productivity and safety of the harvesting crew that will use the landing. The objective of this study is to gain a greater understanding of landing size and how they affect forest harvest operations. This study investigates the relationship between landing size and processing delays. A time study was carried out for ten harvest operation

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2

Barrett, Scott M. "Operational characteristics, erosion potential, and implementation of forestry best management practices on biomass harvesting operations." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/23676.

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Utilization of woody biomass for energy is expected to increase rapidly and logging residues are a likely feedstock to meet increased demands. Potentials for increased biomass utilization have created concerns regarding possible impacts of using logging residues for energy. The overall goals of this project were to characterize biomass harvesting operations and to evaluate potential impacts on soil erosion and implementation of Best Management Practices (BMPs) for water quality on biomass harvesting sites. Results indicate that biomass harvesting was integrated into a wide range of logging bus

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3

Michels, Owen Robert Smidt Mathew F. "GPS and GIS application and analysis of timber harvesting operations on steep terrain." Auburn, Ala, 2009. http://hdl.handle.net/10415/1741.

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4

Santos, de Freitas Rafael Luiz. "MULTI-CAMERA SURVEILLANCE SYSTEM FOR TIME AND MOTION STUDIES OF TIMBER HARVESTING OPERATIONS." UKnowledge, 2019. https://uknowledge.uky.edu/forestry_etds/48.

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Timber harvesting is an important activity in the state of Kentucky; however, there is still a lack of information about the procedure used by the local loggers. The stump to landing transport of logs with skidders is often the most expensive and time-consuming task in timber harvesting operations. This thesis evaluated the feasibility of using a multi-camera system for time and motion studies of timber harvesting operations. It was installed in 5 skidders in 3 different harvesting sites in Kentucky. The time stamped video provided accurate time consumption data for each work phase of the skid

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Tinambunan, Djaban. "Strategic planning models for timber harvesting operations in the tropical rain forests of Indonesia /." Thesis, Connect to this title online; UW restricted, 1986. http://hdl.handle.net/1773/5525.

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6

Shange, Nompumelelo. "Contamination of game carcasses during harvesting and slaughter operations at a South African abattoir." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/98112.

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Thesis (MSc Food Sc)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: The consumption of game meat and its by-products is increasing locally and internationally. The increase in consumption requires research that is focused on the microbiological quality of game meat. The harvesting and slaughter process of springbok carcasses revealed the presence of bacterial contamination. Swab samples taken after skinning portrayed a presence of Escherichia coli (E. coli) and Enterobacteriaceae. Springbok carcasses swabbed after chilling indicated aerobic bacteria, Clostridium spp. and lactic acid bact

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7

Haynes, Hylton John Gordon. "Case Studies in Value Improvement in Hardwood Timber Harvesting Operations in the southern Appalachians." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/34818.

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Three independent case studies focused on harvesting operation value improvement:<p> (1) A productivity study was carried out on a new cable logging operation near Pikeville, Kentucky to document the effect of professional training on production efficiency. The crew received one full week of professional training. Prior to the professional training the productivity of the operation was established at 834 cubic feet per productive machine hour at an average piece size of 54 cubic feet. Two weeks after the training a productivity increase of 218 cubic feet per productive machine hour was establi

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8

Worrell, E. Glen. "Loggers' perceptions of the costs of best management practices on timber harvesting operations in Virginia." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-08222008-063315/.

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9

Phairah, Kudakwashe C. "Operator work-related musculoskeletal discomfort during forwarding operations in South Africa : an ergonomic assessment." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/46059.

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Forest machine operators are still experiencing work-related musculoskeletal disorders (WMSDs) despite extensive mechanisation and modernisation of harvesting systems. However, paucity of local ergonomics research and technology transfer problems threatens the sustainability of mechanised systems in South Africa. Consequently, this study was a field-based ergonomic assessment of local forwarding operations. PG Bison’s North East Cape Forests (NECF) Eastern Cape operations and Komatiland Forests (KLF), Mpumalanga, operations were studied. The main aim of the study was to carry out an ergo

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10

Arabi, Mohsen. "An optimization and simulation framework for integrated tactical planning of wood harvesting operations and lumber production." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/30029/30029.pdf.

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La planification tactique des opérations forêt-usines est centrée sur trois éléments principaux : la récolte, le transport et la transformation du bois. La planification de cette chaine d’approvisionnement est très complexe. Il existe déjà des outils pour faciliter la décision de décideur tels que FPInterface et Optitek, tous deux développés par FPInnovations. Cette mémoire vise à développer un module d’optimisation qui est connecté aux utiles de simulation. LogiOpt est constituée d'un modèle mathématique. Le modèle développé vise l’optimisation de la chaîne d’approvisionnement entre la forêt

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11

Van, der Merwe Adri. "A decision support system for scheduling the harvesting and wine making processes at a winery." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/3046.

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Thesis (MSc (Logistics))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: Technological advances made over the past century have had a major impact on traditional wineries. Software solutions for management issues are widely available and give rise to the prospect of computerized decision support systems assisting in various aspects of managing a winery. The most popular applications seem to be concerned with supply chain management or harvest scheduling. Such projects are under way all over the globe and great success has been achieved to this e ect. However, prior to this study n

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Tolan, Alexander Charles. "The effect of the number of log sorts on mechanised log processing productivity and value recovery in landing-based cable yarder harvesting operations." Thesis, University of Canterbury. School of Forestry, 2014. http://hdl.handle.net/10092/9218.

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The New Zealand forest industry produces a diverse range of log grades and sorts to meet domestic and export market demands and to maximise returns to the forest grower. An implication for the supply chain is the number of log grades and sorts a harvesting operation is expected to produce from one species, radiata pine (Pinus radiata). The number of log grades and sorts can impact on landing size and layout requirements, value recovery, log-making complexity, machine utilisation and quality control requirements. A study was conducted to investigate if the number of log sorts affects mechan

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Stray, Bjorn Jonas. "Tactical sugarcane harvest scheduling." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5194.

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Thesis (PhD (Logistics))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Computerised sugarcane harvest scheduling decision support is an active fi eld of research which ties in closely with the broader problem of automating and streamlining the various activities in the sugar supply chain. In this dissertation, the problem of providing decision support with respect to sugarcane harvesting decisions is defined within a number of contexts, each representing a typical kind of organisation of sugarcane farmers into a cohesive decision making unit with its speci fic requirements and l

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Roseveare, Nicholas. "Optimization and resource management in wireless sensor networks." Diss., Kansas State University, 2013. http://hdl.handle.net/2097/15730.

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Doctor of Philosophy<br>Department of Electrical and Computer Engineering<br>Balasubramaniam Natarajan<br>In recent years, there has been a rapid expansion in the development and use of low-power, low-cost wireless modules with sensing, computing, and communication functionality. A wireless sensor network (WSN) is a group of these devices networked together wirelessly. Wireless sensor networks have found widespread application in infrastructure, environmental, and human health monitoring, surveillance, and disaster management. While there are many interesting problems within the WSN framework,

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Santos, Adão Felipe dos [UNESP]. "Qualidade das operações agrícolas mecanizadas na cultura do amendoim com uso do direcionamento automático." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/143957.

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Submitted by ADÃO FELIPE DOS SANTOS null (adaofeliped@gmail.com) on 2016-09-23T12:27:56Z No. of bitstreams: 1 Dissertação Adão Felipe dos Santos - 2016.pdf: 1454186 bytes, checksum: 346d65b6c3abf44c689b0330be35777d (MD5)<br>Approved for entry into archive by Felipe Augusto Arakaki (arakaki@reitoria.unesp.br) on 2016-09-23T14:36:32Z (GMT) No. of bitstreams: 1 santos_af_me_jabo.pdf: 1454186 bytes, checksum: 346d65b6c3abf44c689b0330be35777d (MD5)<br>Made available in DSpace on 2016-09-23T14:36:32Z (GMT). No. of bitstreams: 1 santos_af_me_jabo.pdf: 1454186 bytes, checksum: 346d65b6c3abf44c689b

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Le, Trong Nhan. "Global power management system for self-powered autonomous wireless sensor node." Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S048/document.

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La quantité d'énergie disponible dans les batteries et le nombre limité de cycles de recharge compliquent singulièrement la conception de réseaux de capteurs sans fil (WSN) autonomes. La récupération d'énergie dans l'environnement direct des nœuds et un stockage d'énergie à base de supercondensateurs sont aujourd'hui considérés comme solutions potentielles pour atteindre une durée de vie du réseau théoriquement infinie. Un gestionnaire d'énergie (PM pour ''Power Manager'') est embarqué dans chaque nœud afin de permettre un fonctionnement en neutralité énergétique (ENO), ce qui veut dire que le

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Aulakh, Jaspreet Gallagher Thomas Vincent. "Implementing residue chippers on harvesting operation for biomass recovery." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Forestry_and_Wildlife_Sciences/Thesis/Aulakh_Jaspreet_37.pdf.

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18

Hogg, Glynn A. "Multi-stem mechanised harvesting operation analysis : application of discrete-event simulation." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1973.

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Thesis (MScFor (Forest and Wood Science))--University of Stellenbosch, 2009.<br>In this study, a multi-stem harvesting operation was observed and time studies carried out on its machines. A stump-to-mill simulation model (System 1) of this system was subsequently built using a commercial simulation software package (Arena 9) and data from the time studies were incorporated into the model. Following this, another two stump-to-mill multistem models (Systems 2 and 3) were built using the same simulation software package and parameterised input data. These two models represented hypothetical

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Gajjala, Phani Kumar. "Energy efficient processor operation and vibration based energy harvesting schemes for wireless sensor nodes." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Gajjala_09007dcc803c4e49.pdf.

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Thesis (M.S.)--University of Missouri--Rolla, 2007.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed December 11, 2007) Includes bibliographical references.

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Pausch, Reinhard. "Ein System-Ansatz zur Untersuchung von Zusammenhängen zwischen Waldstruktur, Arbeitsvolumina und Kosten der technischen und biologischen Produktion in Forstrevieren ost- und nordbayerischer Mittelgebirge A system approach for the analysis of interrelationships between forest structure, work volume and cost of stand establishment, stand tending and harvesting operations in forest districts of Northern and Eastern Bavaria /." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=969621574.

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Bantel, Carlos Adolfo [UNESP]. "Análise de extração de madeira de eucalipto com forwarder em floresta de primeira e segunda rotação." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/90570.

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Made available in DSpace on 2014-06-11T19:24:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-09-01Bitstream added on 2014-06-13T20:52:19Z : No. of bitstreams: 1 bantel_ca_me_botfca.pdf: 1764312 bytes, checksum: a4da2be782691f272a138472ddc521ba (MD5)<br>Universidade Estadual Paulista (UNESP)<br>Foram avaliados três subsistemas de extração de madeira em floresta de Eucalyptus spp, de um sistema colheita florestal de madeira curta, com toretes de 6 metros de comprimento. Subsistema 1: floresta de primeira rotação com pilhas de madeira formadas sobre travesseiros e dispostas em ambos o

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Coup, Charles E. "A Case Study Approach for Assessing Operational and Silvicultural Performance of Whole-Tree Biomass Harvesting in Maine." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/CoupCE2009.pdf.

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23

Corwin, Matthew L. "A documentation and analysis of the physical, operating, and business environments for small-tree handling and harvesting." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/94498.

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Study objectives were 1) to identify successful mechanized thinning and prelogging systems currently operating in the South, 2) to document system characteristics contributing to their success, and 3) to determine which factors affect levels of residual stand damage from thinning operations. The first objective was accomplished by a South-wide industry survey. The latter two objectives were realized through in-depth field studies of selected systems. The survey indicated three system types used on small-tree operations. Feller-buncher/grapple skidder/hydraulic loader systems comprised the ma

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Bantel, Carlos Adolfo 1945. "Análise de extração de madeira de eucalipto com forwarder em floresta de primeira e segunda rotação /." Botucatu, [s.n.], 2006. http://hdl.handle.net/11449/90570.

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Resumo: Foram avaliados três subsistemas de extração de madeira em floresta de Eucalyptus spp, de um sistema colheita florestal de madeira curta, com toretes de 6 metros de comprimento. Subsistema 1: floresta de primeira rotação com pilhas de madeira formadas sobre travesseiros e dispostas em ambos os lados do ramal de extração; Subsistema 2: floresta de primeira rotação com pilhas de madeira formadas sobre travesseiros e dispostas em uma só fileira de pilhas de madeira por ramal de extração; Subsistema 3: floresta de segunda rotação, com as pilhas de madeira dispostas diretamente sobre o solo

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Tavares, Tiago de Oliveira [UNESP]. "Recolhimento mecanizado do café em função do manejo do solo e da declividade do terreno." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/136485.

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Submitted by TIAGO DE OLIVEIRA TAVARES null (tiagoolitavares@hotmail.com) on 2016-03-31T00:01:52Z No. of bitstreams: 1 Dissertação_Tiago_de_Oliveira_Tavares.pdf: 1978145 bytes, checksum: ce74e5f5723fa0727dc1201f786f6631 (MD5)<br>Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-04-01T14:27:43Z (GMT) No. of bitstreams: 1 tavares_to_me_jabo.pdf: 1978145 bytes, checksum: ce74e5f5723fa0727dc1201f786f6631 (MD5)<br>Made available in DSpace on 2016-04-01T14:27:43Z (GMT). No. of bitstreams: 1 tavares_to_me_jabo.pdf: 1978145 bytes, checksum: ce74e5f5723fa0

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Franco, Fabiana Nicoleti. "Alguns parâmetros de desempenho operacional de um sistema de recolhimento de palhiço de cana-de-açúcar (Saccharum spp.) a granel." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11148/tde-11012005-134752/.

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O presente trabalho teve como objetivos estudar o desempenho operacional dos equipamentos utilizados num sistema de enleiramento e recolhimento de palhiço de cana-de-açúcar colhida mecanicamente, sem queima prévia. O experimento foi desenvolvido em área pertencente ao Grupo COSAN, Usina Costa Pinto. Foi adotado o delineamento inteiramente casualizado para avaliar os dois diferentes tratamentos adotados neste estudo. Com o intuito de facilitar o entendimento das variáveis consideradas, estas foram agrupadas em três capítulos. Foram consideradas as variáveis nas operações de enleiramento

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Odhiambo, Benedict O. "The use of time study, method study and GPS tracking in improving operational harvest planning in terms of system productivity and costs." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5333.

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Thesis (MScFor (Dept. of Forest and Wood Science)--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: This study aims to quantify the benefits of implementing an operational harvesting plan in forest harvesting operations. This is to be achieved by comparing productivity and costs from unplanned and planned harvesting operations. The study was conducted on a Pinus radiata plantation owned by Mountain to Ocean Forestry Company (Pty) Ltd (MTO) located near the town of Grabouw in the Western Cape Province of South Africa. MTO conducts harvesting operations using semi-mechanised tree-len

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Oliveira, Milton Pyles de. "Dimensionamento operacional e econômico de um sistema de colheita mecanizada de cana-de-açúcar: estudo de caso." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/11/11148/tde-05112012-102140/.

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A cultura da cana-de-açúcar esta relacionada, principalmente, com a produção energia, podendo ser tanto por meio do etanol, quanto do açúcar ou quanto da energia elétrica. A demanda por alimentos e energia é crescente, proporcionando assim um crescimento da produção nacional destes produtos. Devido a essa necessidade, surge a importância de um planejamento para um sistema de colheita mecanizado na cultura, com a finalidade de atender ao aumento do consumo e às exigências legais oriundas dos fatores ambientais e sociais. Sendo assim, o objetivo geral desse estudo foi o de realizar, por meio de

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Sanches, Fabricio Marqui [UNESP]. "Sistema de geração e armazenamento de energia elétrica utilizando transdutor piezelétrico na forma pulsada." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/132420.

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Submitted by FABRICIO MARQUI SANCHES null (fabriciosmf@yahoo.com.br) on 2016-01-05T12:05:05Z No. of bitstreams: 1 DISSERTAÇÃO-Fabricio_Marqui_Sanches.pdf: 2162339 bytes, checksum: 257059fa1be635fc6245b0168ddbebc4 (MD5)<br>Approved for entry into archive by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br) on 2016-01-06T17:34:12Z (GMT) No. of bitstreams: 1 sanches_fm_me_ilha.pdf: 2162339 bytes, checksum: 257059fa1be635fc6245b0168ddbebc4 (MD5)<br>Made available in DSpace on 2016-01-06T17:34:13Z (GMT). No. of bitstreams: 1 sanches_fm_me_ilha.pdf: 2162339 bytes, checksum: 257059fa1

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Kitenge, Emile Museu. "Harvesting of invasive woody vegetation (Eucalyptus lehmanii, Leptospermum laevigatum, Acacia cyclops) as energy feedstock in the Cape Agulhas Plain of South Africa." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/17873.

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Thesis (MFor)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: This study is aimed at testing the possibility of using woody biomass from three invasive woody vegetation types (Spider Gum, Myrtle and Acacia) for production of bioenergy in the Cape Agulhas Plain. Physical recoverability of the woody biomass was studied by means of a semi-mechanized harvesting system to evaluate potential productivity, operational costs and the estimated yield energy gain. The system consisted of five components: manual harvesting, motor-manual harvesting, extraction, chipping and road transport. Data

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Rue, Timothy James. "Modular Vehicle Design Concept." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51219.

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Outlined herein is the Modular Vehicle [MODV] concept as a cost effective, utilitarian, and highly functional vehicle concept for the changing demands placed on a MAGTF [Marine Air-Ground Task Force] or SP-MAGTF [Special Purpose Marine Air-Ground Task Force] in the 21st century. A large focus is put on the importance of modularity and cost effectiveness of having a 24 hour configurable vehicle to a specific mission and area of operation. Off-road vehicle progression through history is presented and successful design features are noted in order to develop underlying goals for the modular vehicl

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Götz, Martin. "Subthreshold Leakage Voltage Supervisor für den wartungsfreien Betrieb umgebungsenergieversorgter Sensorknoten." Universitätsverlag Chemnitz, 2019. https://monarch.qucosa.de/id/qucosa%3A38405.

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Die Nutzung von Umgebungsenergie ermöglicht bei einer zunehmenden Anzahl von Anwendungen drahtloser Sensorknoten eine autarke Energieversorgung. Wartungseingriffe sowie unvorhergesehene Energieengpässe begrenzen den autarken Einsatz derartiger Sensorknoten oder erfordern eine deutliche Überdimensionierung der Energy Harvester und Energiespeicher. Anwendungen, wie der Einsatz in unzugänglichen Bereichen, Sensornetzwerken mit einer großen Anzahl von Knoten oder sehr kleinen Knoten / Smart Dust, können unwirtschaftlich werden, wenn kein wartungsfreier Betrieb gewährleistet werden kann. Erreicht e

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Machado, Leandro Ruiz. "Dimensionamento de sistema de corte, carregamento e transporte do eucalipto." reponame:Repositório Institucional do FGV, 2014. http://hdl.handle.net/10438/11519.

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Submitted by Leandro Ruiz Machado (leandromachado@columbia.com.br) on 2014-03-06T01:20:13Z No. of bitstreams: 1 Dissertação_ V15_20140305 - Versão Final.pdf: 1843274 bytes, checksum: eee08685c0f2ab2bfb6c985bf7585b12 (MD5)<br>Rejected by Suzinei Teles Garcia Garcia (suzinei.garcia@fgv.br), reason: Prezado Leandro Ruiz, A ficha catalográfica falta o número do CDU. Link abaixo para solicitar a ficha. http://bdigital.bibliotecas.fgv.br/ficha_catalografica Att. Suzi 3799-7876 on 2014-03-06T14:08:14Z (GMT)<br>Submitted by Leandro Ruiz Machado (leandromachado@columbia.com.br) on 2014

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Барановський, Віктор Миколайович, Виктор Николаевич Барановський та V. M. Baranovsky. "Механіко-технологічні основи розробки адаптованих коренезбиральних машин". Thesis, Тернопільський національний технічний університет ім. Івана Пулюя, 2013. http://elartu.tntu.edu.ua/handle/123456789/2572.

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Робота виконана у Тернопільському національному технічному університеті імені Івана Пулюя Міністерства освіти і науки України. Захист відбувся в 2013 році на засіданні спеціалізованої вченої ради Д 58.052.02 в Тернопільському національному технічному університеті імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56, аудиторія 79. З дисертаційною роботою можна ознайомитись у бібліотеці Тернопільського національного технічного університету імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56.<br>У дисертації на основі сукупності узагальнених результатів

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Дубчак, Наталія Андріївна, Наталья Андреевна Дубчак та N. A. Dubchak. "Обґрунтування параметрів та режимів роботи очисника вороху кормових буряків". Thesis, Тернопільський національний технічний університет ім. Івана Пулюя, 2011. http://elartu.tntu.edu.ua/handle/123456789/1270.

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Робота виконана у відокремленому підрозділі Національного університету біоресурсів і природокористування України «Бережанський агротехнічний інститут» Кабінету Міністрів України.Захист відбувся в 2011 році на засіданні спеціалізованої вченої ради Д 58.052.02 в Тернопільському національному технічному університеті імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56, аудиторія 79.З дисертаційною роботою можна ознайомитись у бібліотеці Тернопільського національного технічного університету імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56.<br>Дисертація присвячен

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Hu, Tzu-Heng, and 胡子恒. "Comparisons on the Plantation Stands Harvesting Operations in Taiwan." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/njy7sh.

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碩士<br>國立宜蘭大學<br>森林暨自然資源學系碩士班<br>107<br>The purpose of this study was focused on timber harvesting system for promotion on the efficiency of timber harvesting in Taiwan. The research content includes felling and bucking operations and yarding operations, those were the major parts on timber harvesting operations in this study. In this work, log taper, log grade and heartwood ratio after timber harvesting operations were also discussed. The third part of this study was to compare the log volume difference between manual log scaling and automatic image recognition method. The timber harvesting op

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Kuo, Ching-Hung, and 郭勁宏. "Human Factors Engineering Analysis of Manual Harvesting Operations for Gingers." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/68807670235096389696.

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碩士<br>國立宜蘭大學<br>生物機電工程學系碩士班<br>104<br>Traditional farming heavily relies on labor to do hard, repeated jobs which might cause occupational injury. Farming caused occupational injury is an issue worth concern. The objective of this research is to study human factor engineering related issues and problems about manual harvesting operations for gingers in order to improve the operational procedures or to provide information for potential future development of ginger harvesters. The researchers used two digital video cameras to record the actual movements of farmers who were conducting ginger harv

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Pavel, Mihai. "Model for predicting net revenue of harvesting operations in coastal second-growth stands." Thesis, 1997. http://hdl.handle.net/2429/5890.

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As forest harvesting shifts from old-growth to second-growth stands, profitability is becoming an important issue. In a cooperative project involving Forest Engineering Research Institute of Canada (FERIC), University of British Columbia (UBC) and Canadian Forest Service - Pacific Forestry Center, a model was developed to predict economics of second-growth harvests. The final result that can be obtained with the model is the net revenue produced after logging a second-growth stand. This is computed as a function of stand characteristics, company product requirements and harvest equipment

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Marasevic, Jelena Rajko. "Resource Allocation in Wireless Networks: Theory and Applications." Thesis, 2016. https://doi.org/10.7916/D85T3KP0.

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Limited wireless resources, such as spectrum and maximum power, give rise to various resource allocation problems that are interesting both from theoretical and application viewpoints. While the problems in some of the wireless networking applications are amenable to general resource allocation methods, others require a more specialized approach suited to their unique structural characteristics. We study both types of the problems in this thesis. We start with a general problem of alpha-fair packing, namely, the problem of maximizing sum_j {w_j f_α(x_j)}, where w_j > 0, ∀j, and (i) f_α

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Torrado, Joel Möllering. "Modeling and Analysis of Energy Harvesting IoT Networks." Master's thesis, 2018. http://hdl.handle.net/10316/86525.

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Dissertação de Mestrado Integrado em Engenharia Electrotécnica e de Computadores apresentada à Faculdade de Ciências e Tecnologia<br>Redes de Internet das Coisas em que existe recolha de energia do ambiente são o alicerce de uma série de conceitos de alta conectividade contemporâneos nos quais é necessário extrair cada vez mais informação do ambiente, ao mesmo tempo que se mantém a perpetuidade operacional dos mesmos.Maximizar a recolha de dados do meio envolvente usando uma rede deste tipo com conectividade multi-etapa enquanto se mantém uma operação energética neutra é uma tarefa complexa po

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Pausch, Reinhard [Verfasser]. "Ein System-Ansatz zur Untersuchung von Zusammenhängen zwischen Waldstruktur, Arbeitsvolumina und Kosten der technischen und biologischen Produktion in Forstrevieren ost- und nordbayerischer Mittelgebirge = A system approach for the analysis of interrelationships between forest structure, work volume and cost of stand establishment, stand tending and harvesting operations in forest districts of Northern and Eastern Bavaria / Reinhard Pausch." 2002. http://d-nb.info/969621574/34.

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Silva, Marco António Santos. "Heuristic and Simulation of Energy Harvesting IoT Networks." Master's thesis, 2020. http://hdl.handle.net/10316/92170.

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Dissertação de Mestrado Integrado em Engenharia Electrotécnica e de Computadores apresentada à Faculdade de Ciências e Tecnologia<br>Redes de Internet das Coisas consistem numa rede física de objetos, veículos e prédios, dotados de tecnologia capaz de realizar transferência de dados. A maioria dos dispositivos de Internet das Coisas são alimentados energeticamente por uma bateria, por isso, o consumo de energia é um aspeto crítico que precisa de ser controlado e resolvido. Este trabalho visa contribuir para a eficiência energética no contexto de Internet das Coisas, com foco na energia proveni

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Benkhelifa, Fatma. "Towards Perpetual Energy Operation in Wireless Communication Systems." Diss., 2017. http://hdl.handle.net/10754/626219.

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Wireless is everywhere. Smartphones, tablets, laptops, implantable medical devices, and many other wireless devices are massively taking part of our everyday activities. On average, an actively digital consumer has three devices. However, most of these wireless devices are small equipped with batteries that are often limited and need to be replaced or recharged. This fact limits the operating lifetime of wireless devices and presents a major challenge in wireless communication. To improve the perpetual energy operation of wireless communication systems, energy harvesting (EH) from the radio fr

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(7518488), Michael D. Ozeh. "Design And Fabrication Of A Hybrid Nanoparticle-Wick Heat Sink Structure For Thermoelectric Generators In Low-Grade Heat Utilization.pdf." Thesis, 2019.

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Waste heat recovery is a multi-billion-dollar industry with a compound annual growth rate of 8.8% assessed between 2016 to 2024 and low-grade waste heat (< 230<sup>o</sup>C ± 20<sup>o</sup>C) makes up 66% of this ubiquitous resource. Thermoelectric generators are preferred for the recovery process because they are cheap and are well suited for this temperature range. They generate power by converting thermal potential to electric potential, known as the Seebeck effect. Since they have no moving parts, they are inherently immune to mechanical failure or an intermittent need for maintenance. How

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