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138 Uppsatser om Byrćrotation - Sida 5 av 10
FjÀrrstyrt kamerafÀste : HE Remote
Vid tillfÀllen dÄ det inte lÀmpar sig att stÄ vid en videokamera kan det lösas med ett fjÀrrstyrt kamerafÀste. Exempel pÄ tillfÀllen Àr pÄ grund av platsbrist pÄ en konsert, en högtidsceremoni dÀr nÄgon mÄste stÄ konstigt till för att fÄ bra bild, ute i naturen dÀr djur ska filmas utan att bli ivÀgskrÀmda eller vid personalbrist, en tight budget och mÄste styra flera kameror samtidigt. De system som finns tillgÀngliga pÄ amatörmarknaden idag har antingen annan funktionalitet och passar sig inte för ovanstÄende problem eller har vÀldigt begrÀnsad rÀckvidd och gÄr inte att sammankoppla med en mobilapplikation.Detta projekt gÄr ut pÄ att ta fram en kostnadseffektiv och skrÀddarsydd lösning för ovanstÄende problem genom att utveckla ett fjÀrrstyrt kamerafÀste i semiproffssegmentet dÀr det via en handkontroll och vid senare skede med en mobilapplikation styr kamerans lutning och rotation Àven kallad tiltning och panorering.Skillnaderna mellan denna och befintliga lösningar Àr att med hjÀlp av Bluetooth-tekniken kan styra bÄde med handkontroll och senare Àven med en mobilapplikation, anledningen till att det skall kunna styra med bÄda Àr att det inte alltid Àr tillÄtet att anvÀnda sig av mobiltelefoner i alla miljöer dÀr man vill filma och dÀrför fÄr ett bredare anvÀndningsomrÄde för kamerafÀstet..
Visualisering ? ett verktyg för att illustrera lÄngsiktiga konsekvenser av slutavverkning och naturhÀnsyn
Forestry in Sweden is currently conducted in a manner aiming at equating the production objectives and the biodiversity. To ensure that biodiversity is maintained, patches that are considered to be valuable now or in the future is saved in final fellings. How the tree retention areas will grow into the future forest stands is yet unknown.The purpose of this study was to visualize how different scenarios of natural consideration taken at final felling will evolve in a long term perspective, for two rotation periods. Projections of the forest conditions were executed with the decision support system Heureka and its applications PlanStart and PlanWise. The information about the projected forests was then used for the visualizations which were created in the software Visual Nature Studio.
Askgödsling och dess lÀmplighet i torvmarksskogar tillhörande Sveaskog Förvaltnings AB : en litteraturstudie
During whole-tree harvesting, there is a risk that the soil will become impoverished of nutrients. To prevent this, nutrients are returned to the harvested site as wood ash. This action also reduces the risk of soil acidification. Nevertheless, the ash does not result in any increase of tree growth if it is added on mineral soils, which is where the measure is most commonly used in Sweden. Due to the lack of growth response, the interest from landowners is small, which is why ash amendment today is not done enough to compensate for the need.
Tuftade ljudabsorbenter ? vÀggpaneler för rumsliga och akustiska egenskaper
It is a well-known fact that textiles and carpets have benign sound-absorbing properties. It is desirable to have quantified values of these properties ? especially for architects and interior designers. They often need to be able to giveaccount for the acoustic properties of their designs at a relatively early stage and sometimes have strict acoustic classifications imposed upon them by their contractor. A product with documented acoustic properties would aid when prescribing interior elements.The purpose of this thesis is to develop a wall-mounted panel in hand-tufted material ? aesthetically pleasing and versatile but also having documented and quantified acoustic properties.
Planteringsförbandets inverkan pÄ bestÄnd av contortatall (Pinus contorta var. latifolia) med avseende pÄ volymtillvÀxt och virkesegenskaper
At the beginning of the 1970ÂŽs forestry feared an imbalance in the future wood supply. Because of this anticipated "timber slump" forest companies undertook a variety of measures to counter this. One of these measures was the introduction of exotic tree species. The choice finally ended up with lodgepole pines which were considered a fast growing tree species compared to our native tree species. Theambition for the new lodgepole pine stands were to run these with rotation periods of between 40-60 years, thus smoothing out the ?timber slump? that was anticipated.
FörbÀttring av vÀggfÀste för flatscreens
The project was carried out in cooperation with the department of product development IOS at IKEA. The work included improvements of a new existing product that Ikea soon will release on the market, Observatör, a wall bracket for flat screens. The product is supposed to fulfil the needs within this market for IKEA. However, since Ikea was not satisfied with it, our work was to carry out the improvements that were specified in the beginning of the project. Another task in the project was to develop a side-product that is supposed to be used together with Obeservatör for storage of DVD/decoders.The project included labour as problem definition to final technical drawings and a prototype.
Automatisk lockmekanism : frÄn idé till prototyp
Wavecraft AB develops medical equipment for heating of organic synthesises. The heating is done with microwaves, which improves the process in both speed and accuracy compared to the more traditional methods where heating elements are used. This report discusses the developement of an automatic lid mechanism for one of Wavecraft's product prototypes. The company assumes that the final product will be integrated by customers into fully automated systems, and the upgrade from a manually to an automatically controlled lid is therefore an important step in the product's developement process.The first stage och the project was an idea generation process. The ideas generated here were organized into five different concepts of which the best one was selected through the use of a concept matrix.
Herons Ängkula : BestÀmning av verkningsgrad
Detta arbete beskriver hur Herons Ă„ngkula fungerar och hur den har byggts.Ă
nkulan konstruerades för ca 2000 Är av Heron.Meningen var att fÄ fram en verkningsgrad eftersom denna var okÀnd. Verkningsgraden blev aldrig konstaterad. Endast en teoretisk berÀkning för verkningsgraden gjordes. Kulan sattes inte i rotation av Ängtrycket som byggdes upp nÀr det eldades under denna.Anledningen var troligen att det var för mycket friktion i tÀtningen som skulle tillföra matarvatten in i kulan. VÀrmeöverföringen mellan gaslÄgan och kulkroppen var inte heller den mest optimala.Kulan med tillhörande kringutrustning byggdes under dec-07/jan-08 efter eget tycke och utan nÄgon existerande ritning.
DetaljhÀnsyn efter slutavverkning : kvantitet och inverkan pÄ framtida produktion hos SCA i VÀsterbotten
According to FSC (Forest Stewardship Council) shall at least a mean of 10 trees per hectare including riparian zones and other areas with high biological values be left in final felling. In addition large clear areas should not be created and all retained trees with high environmental value shall be spared. To leave trees in final felling means a lower cutting volume and hence a lower income from the cutting, but it also means that the production in the next generation becomes less because of competition. The aim of this study was to evaluate the effect retained trees have on the production in the new generation of forest, and to investigate if there is any way to lower this effect. The environmental care has also been estimated by the amount left in final felling.
FörbÀttrad hÄllning kring axelleden genom funktionell trÀning - En studie pÄ kontorsarbetande kvinnor
Eight out of ten Swedes has once in a while pain in the back, neck or shoulders. This often depends on inactivity and monotonous work under a long time. Pain affects us mentally since the body and mind affect each other, which can lead to an evil circle of pain and depression. A typical imbalance in an office worker with the arms in front of the body while working is that the muscles on the front of the trunk will be shortened, since they never work with their full length and become strong because of the constant use. On the other hand, the muscles on the back of the trunk will be weakened and elongated, since they are working in an extended and static position.
Lantbruk i framtiden : ett praktikfall
The economic prerequisite to many farmers in Sweden after the EU membership and the
new agriculture policy has generated large demands on the farm management. Until year
2004 you got a grant based on what you had produced and not on consumer demand. In
2005 a new economic aid (Mid Term Revue) was introduced and the conditions has
changed again. Due to this I have chosen to do a cost-benefit analysis on a case, to
investigate if the present production is sustainable in the future.
My conclusion is that the profitability is acceptable even if the farm has a high debt. But
to make the production more profitable the products produced should be refined as much
as possible at the farm, to get maximum economic return.
SkogstillvÀxten ca 20 Är efter plantering pÄ Flakmossen : dikningens och gödslingens betydelse vid beskogning pÄ en avslutad torvtÀkt i VÀrmland
This study was performed in an afforestation experiment established 1982 on an abandoned peat harvesting area, Flakmossen, in the province of VĂ€rmland, SW Sweden. The experimen-tal design include planting with Scots pine (Pinus sylvestris), in combination with various drainage intensities (20, 30, and 40 m between ditches), and fertilizer doses 0, 100, and 200 g PK per seedling applied at the date of planting.
The aim of this study was to achieve more knowledge about the conditions on afforestation of peat harvesting areas, especially regarding drainage intensity and fertilization requirements, by means of determining the stand growth and yield in the Flakmossen trial.
The forest growth did not differ significantly between the drainage intensities tested when the same amount of phosphor and potassium fertilizer was added. Thus, shorter distances between ditches than 40 m can not be recommended.
When no fertilization was carried out seedling survival was very low, and the growth of sur-vived seedlings was poor. The largest diameter and height growth were observed in the areas where the highest dose of phosphorus and potassium (200g/seedling) was given.
ARBETSVĂXLING SOM KOMPETENSHĂJANDE Ă TGĂRD FĂR INTENSIVVĂ RDSSJUKSKĂTERSKOR
Bakgrund: I Stockholmsregionen rÄder det en brist pÄ intensivvÄrdssjuksköterskor. En orsak Àr hög personalomsÀttning dÀr mÄnga intensivvÄrdssjuksköterskor lÀmnar intensivvÄrden inom tvÄ Är efter anstÀllning pÄ grund av hög arbetsbörda, otillfredsstÀllande lön eller bristande möjligheter till kompetensutveckling. Arbetsgivare som uppmuntrar till kompetensutveckling fÄr fler intensivvÄrdssjuksköterskor att stanna kvar inom intensivvÄrden Àven om arbetsbördan Àr hög.Syfte: Syftet med denna studie Àr att undersöka vad intensivvÄrdssjuksköterskorna anser om arbetsvÀxling som kompetenshöjande intervention.Metod: Studiedesignen var kvalitativ och som metod har fokusgruppsintervjuer anvÀnts. Materialet har analyserats med hjÀlp av kvalitativ manifest innehÄllsanalys.Resultat: Studiens huvudresultat var deltagarna ansÄg att arbetsvÀxling fungerar som kompetenshöjande intervention. Resultatanalysen utkristalliserade totalt fem teman: arbetsvÀxlings inverkan pÄ kompetensen, arbetsvÀxlings inverkan pÄ individen, arbetsvÀxlings ömsesidiga pÄverkan mellan avdelningar, arbetsvÀxling som kvarhÄllande ÄtgÀrd och anledning att stanna kvar inom intensivvÄrd.Slutsats: Studien visade pÄ att intensivvÄrdssjuksköterskan anser att arbetsvÀxling Àr en kompetenshöjande ÄtgÀrd för intensivvÄrdssjuksköterskan.
Automatic Trimmerhead
Automatic trimmerhead is an examination project for making an automatic trimmerhead for grass trimmers with the user and functionality in focus. Our perception is that a happy user is a user who can pick up his or her trimmer, use it and put it back to its place when the job is done. It should not be necessary to interrupt work and perform maintenance on the machine just to make it work as promised.The project has been made in collaboration with the company Husqvarna, which is one of the biggest actors dealing with garden machinery on the market. Together we determined the project goal, ?To invent, construct and test a brand new concept for how an automatic trimmerhead can look and function?.At this day there are several different automatic trimmerheads on the market, both semi and fully automatic.
Oljefilmens tjocklek mellan kolvring och cylinderlopp
HĂ€gglunds Drives in Mellansel, Sweden, manufacture radial piston hydraulic motors foremostwithin applications in the industry. These motors have several sliding contacts, one of these, isthe contact between piston ring and cylinder bore. The radial piston hydraulic motors advantageis to produce high torque in very low rotation velocity, this result in that the maximum slidingvelocity between piston ring and cylinder bore, during the whole stroke, is very low. Theconsequence of this low sliding velocity is that the contact between piston ring and cylinderbore, during the whole stroke, is bound to the boundary lubrication regime. This result in, thatthe piston ring is exposed to wear, thus affect the service life of the complete hydraulic motor.To minimize wear of piston ring, it is essential to determine the oil film thickness between thepiston ring and cylinder bore.