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725 Uppsatser om Machine guidance - Sida 11 av 49
Den militära nyttan av kurskorrigerande tändrör
Sveriges ökade engagemang i internationella konflikter har förändrat under vilkaformer och i vilka miljöer som dagens militära operationer genomförs. Framföralltinnebär det att alla insatsförband inom Försvarsmakten ska kunna verka inom allakonfliktnivåer och i de flesta miljöer, även i urban terräng. Som en följd av dettauppkommer nya behov och krav på den indirekta bekämpningsförmågan i form avprecisionsbekämpning.Syftet med föreliggande arbete är att kartlägga om, och till vilken grad, ettkurskorrigerande tändrör bidrar till att öka den taktiska effektiviteten förstådd somverkanseffektivitet, kostnadseffektivitet, logistisk effektivitet samt minskad oönskadsidoverkan. Kartläggningen sker genom en komparativ litteraturstudie medkompletterande expertintervjuer.Med hjälp av kurskorrigerande tändrör som medger nära precisionsbekämpning kanen rad vinster erhållas. Exempel på sådana vinster är minskad spridning samt ökaddimensionering av verkan, minskad risk för oönskad sidoverkan, en lägre totalkostnad för ammunition samt minskat behov av transporter genom ökad effekt av detenskilda skottet..
Motviktsslungans dynamik : En analys av medeltida konstruktionsråd för mekaniskt artilleri
AbstractThis Master?s thesis analyses the dynamics of the medieval counterweight lever engine, ortrebuchet, a type of mechanical artillery. The purpose is to study the differences between different types of these machines, and see if computer simulations can be used to validate preserved advice on construction. Simulations include machines with a fixed counterweight, a hinged counterweight and a combination of both counterweights.Due to the almost complete lack of archaeological finds and insufficient historical source material there are still, after more than a century of research, many unanswered questions concerning the design and performance of these machines.The present study is based on an analysis by Jahsman (2004). A more detailed mathematical model employing Coulomb-friction is used.
Möjligheter att öka effektiviteten och det ekonomiska utfallet av barkhanteringen vid Seskarö sågverk :
The sludgebark and to a certain extent the bark were until a decade ago waste products without any economic value that were thrown away. A number of environmental laws and increcing energy prices have improved the prerequisites for increasing the use of these materials. At Seskarö sawmill they burn the sludgebark and a great deal of the bark in the sawmill furnace. The sludgebark has a number of disadvantages compared to bark during burning. The sludgebark is often wet which means the energy net from burning often gets low.
Uppgradering av robotsystem på Termisk sprutning, Volvo Aero
This thesis work resulted in a template for how the thermal spray process can be controlled through robot programs. The robots today and their programs need to be replaced, therefore a new structure which can be matched with the new robot systems is needed. The work is limited to only concern structured programming on the new robots on Thermal Spray Centre (TC) with the programming language Rapid. The basic data for the program was retrieved from interviews with concerned personnel at TC, from studies on process parameters for thermal spray and from existing specifications at Volvo Aero Corporation (VAC). The thesis work briefly describes the process thermal spray and the four methods used at VAC.
Civil-militära relationer - förutsättningar för samverkan
Civil-military relations ? conditions for cooperationAbstract: Civil-military cooperation is a branch of current interest, both in studies and research. The importance has also increased after the government´s demands in a more developed and efficient coordination of national contribution to international peace support operations. Several studies show that there is a lack of ability to cooperate between different levels of command and other actors. The Swedish tradition of state administration is strong and the responsibility to cooperate lies within the hands of the different authorities.
Däck-mark Interaktion hos skogsmaskiner
The most predominant method for forest harvesting in Sweden is the cut-to-length method based on two-machines, a harvester that fells trees and cut them in a predefined length, and a forwarder which transports logs to a landing area for further transport to a processing facility. New machine solutions have to be much gentler to the ground than today?s machines. To be able to develop a forestry machine that preserves the terrain requires a proper understanding of the interaction between tire and soil.The goal of the project is to contribute to the existing knowledge of forest machine tire-soil interaction and to develop a tire-soil model that enables dynamic simulations of forest machines operating in rough terrain. The modeling has especially been focused on the interaction between tires and soft ground.A comparison of theoretical data of different WES-based terrain interaction models and a comparison test data from a full scale field test is presented.
Bredspridning av grönmassa :
There are a great possibility to shorten the time between mowing and preservation by spreading of ley crops in connection to the conditioning. In this case the cellular respiration (the plants breeding that consume sugar until the crop is ensiled) should not continue as long and the forage will perhaps get a higher nutritional value. The capacity of the next machine could also be higher because the rake gives swaths with a lot of material. There is also a possibility that spreading of ley crops gives the material a more homogeneous content of dry matter and that gives a reduced growth of clostridium. This is particularly important when the method of harvest doesn?t include any mixing of the material like it does with a round baler or silagewagon.
Kostnadsbesparingar på EM7 : Omkonstruktioner för billigare tillverkning
This thesis describes how a cost reduction project was done on the Packsize ondemand packing machine EM7. The cost reduction was achieved by making minorredesigns of the EM7.The project began by studying the EM7´s structure and function by working on itsassembly line. A short literature study on the subject Design for Manufacturing wasalso done.By working on the assembly line and by speaking with staff from production anddevelopment departments, a number of ideas for reducing manufacturing costs arose.Estimations of the potential cost reduction size for each proposal were done incollaboration with vendors and the purchasing department. Based on the size of the cost reduction, technical risk, impact on the assembly lineand the development time the various proposals were ranked. The two highestranked proposals were selected for further development towards finished solutions.One of the ideas that were selected to develop in to a finished solution meant thatsome of the pneumatic valves were replaced with others.
Identifiering av lakbara potentiellt farliga ämnen i gummiasfalt
The main purpose of the project was to identify potential environmentally harmful substances which can be leached from rubber asphalt. A method for analysing asphalt was developed and three rubber asphalt materials were analysed after being cryogrinded. One of the materials was also tested in a road machine made for testing of asphalt paving. The particles created in the machine were analysed in the same manner as the cryogrinded asphalt materials.The asphalt materials were leached by water during 24 hours. The leachates were extracted with dichloromethane, dried with sodium sulphate and concentrated to a small volume.
Musikers karriärvägar : Flöjtisters karriärvägar och utbildningars påverkan
If guidance counselors are to do as good a job as possible, they need to have as much comprehensive information as possible when it comes to possible career paths for their clients. To get on the way to get this information I, in this study, examined how musicians - specifically flute players career paths could seem. I examen this by doing five interviewees. This study is for guidance counselors, so they hade a more solid foundation to stand on, but also for aspiring musicians to get new perspectives to consider when faced with career choices.The study is conducted through five interviews with professionals flutists; Agneta, Harry, Jenny, Eva and Pepita who all work or have recently worked as professional musicians or teachers. With professional musician, I mean the ones in one way or another is or has been employed musicians and also is in the same or higher level in terms of their music ability than those who are employed.
Funktionaliteten i skogsmaskiners GIS-system
Holmen Skog is currently using a GPS-program called TraktInfo, originally
developed within the company. They are now planning to switch to a new GPSprogram
or allowing the contractors to buy other programs available from the
logging equipment manufacturers. To be able to offer this flexibility, Holmen
Skog needs to obtain information about the features offered by the different
manufacturers in their specific programs, and also when the manufacturers are
planning to start selling programs adapted to the new standard called
StanFord2010.
According to the study, the manufacturers are hesitant to StanFord2010 and there
has also been a lack of clear signals from the customers and clients about what
kind of different new features to include in the programs.
The feature most frequently used by forest machine operators today is the option
to keep record of the harvester?s path by creating a ?log plot?. This feature was
not used to its full potential however, since only one out of eight of the forwarders
included in the study had computers that were compatible with the harvester?s
computer.
Produktivitet och lönsamhet vid skogsbränsleuttag i klena gallringar : en tidsstudie av Vimek 608 BioCombi i contortabestånd
The annual demands for forest fuels increases in Sweden. At present, large unutilized biomass resources is found in young, dense forests from which about five million oven-dry tonnes (ODt) (23 TWh) could annually be extracted as forest fuel. But harvesting small trees give high logging costs and new cost-efficient harvesting techniques are therefore required. The aim was to study the productivity of Vimek 608 BioCombi in forest fuel thinning of Lodgepole pine and to calculate the economy of the harvesting and estimate the thinning quality. The time study was performed in Åmarken in the county of Västerbotten.
Bricoleur, digitala varelser och brus
Bricoleur, digitala varelser och brus utgör tre viktiga noder, runt vilka mitt konstnärliga arbete rör sig. Parallellt med ett antal av mina verk beskrivs dessa begrepp kortfattat..
UML som stöd vid småskalig utveckling av ett inbyggt system
This project aims at investigating if the use of UML as a support to small-scale development ofan embedded system is relevant. The investigation is conducted by using UML during the initialphase of the development ofTelfafill, a filling machine by the company ?Telfafill AB?. The aimof the development of Telfafill is to separate the user interface from the control unit. In additionto this main objective, Telfafill AB would like possible changes to, and additions of,functionality of the filling machine to be investigated.Within the boundaries of this project, the development of Telfafill reached a full requirementspecification of the proposed system, and contact was made with potential external developers.No prototype construction had been started when the project ended.
Uppsökande flickor och undvikande pojkar? : Studie- och yrkesvägledares upplevelser av vägledning av pojkar i grundskolan.
Studie-och yrkesvägledning är något som enligt skollagen alla elever utom förskolebarnska erbjudas för att kunna göra väl underbyggda framtidsval. Skolans vägledningska även vara frivillig, vilket innebär att det ofta är elevernas eget ansvaratt söka upp vägledaren för att få prata om sina tankar och funderingar.Grundskolan är en plats där eleverna utökar sin kunskap, men även utvecklar sinidentitet samtidigt som de utsätts för stereotyper och könsmässiga fördomar. Dennaundersökning har fokuserat på pojkarna i grundskolan. Fyra kvinnliga och fyramanliga studie- och yrkesvägledare inom grundskolan har intervjuats för attsöka svar på deras upplevelser av vägledning av pojkar inom grundskolan. Resultatetvisar ambivalenta svar då den generella upplevelsen är att pojkar och flickorsjälvmant uppsöker vägledning i samma utstäckning, för att sedan visa attpojkar är överrepresenterade i att inte komma till de bokade samtalen och attflera vägledare känner sig tvingade att hämta in främst pojkar till samtal.