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549 Uppsatser om Timber transportation - Sida 3 av 37

Moibl interaktion i kollektivtrafik

In this paper we take a look at digital applications to help the user with public transportation. The main goal was to evaluate the problem a user can face when aiming to use the public transportation system, and to create a application for Apple Iphone that can enhance and help the user, no matter if he is familiar with the local public transportation system, or if he is less familiar with it. The aim was that the user wouldnt need any previous knowledge to be able to use our application. We combined Location-Based Services with Realtime-travelinformation and trip planning to examine if this combination could make both of the two different user-groups satisfied. To understand the problematics a user faces when approaching the public transportation-scene, Scenario-Based Design is evaluated as a method to grasp this problem.

Timmersorteringens inverkan på sågverksekonomin :

Modern sawmills are using the raw-material and the production-capacity more efficiently today, due to rising raw-material prices and higher production costs. Log sweepness has a negative effect on the sawn yield, for sawmills with straight-sawing. It is desirable that these logs could be sorted based on more criteria, if it increases value-yield and consequently the utilization of raw-material. Bow-heights over 1 cm have a negative effect on sawn yield, since the surface of the mantle cuts down in the sawn pattern. Some of these small bow-heights reduce the logs yield of value which affects the production planning negatively. Nearly half of all the Swedish logs have a bow-height over 1 cm.

Vederlagsgrundande mätning med skördare

This study was performed in collaboration with Moelven Skog AB, Örebro district. The purpose of the study was to review existing literature in order to describe the current status of harvester based measurement technology as the way to provide information for calculating payment to the forest owners. In addition to this, a short survey was conducted to find out how a switch to harvester based measurement would affect the administrative workload on timber purchasers working for the district. The literature study shows that the harvester measurement technology is ready to use if it is combined with well-established routines for control of the harvesters, methods for automatic quality indexing of the timber and ways of creating pricelists specially adapted for harvester measurement. Pricing each stem seems to be the most promising method. Stem pricing has several benefits.

Effekter av transport och buller på grisars aktivitet samt aggressiva interaktioner i väntan på slakt :

During pre-slaughter handling of pigs the animals are often subjected to methods that induces stress and are a threat to the wellbeing of the animals, such as mixing of groups, loud noise and transportation. A new law will be implemented in 2006 in Sweden that prohibits mechanical noise exceeding 65 dB in abattoirs. The purpose of the research presented in this paper was to examine the effects of noise and transportation on pig behaviour. The activity and aggressiveness of the pigs were examined with behavioural studies during transportation and during three different noise levels: 55, 75 and 95 dB. Before the noise treatments took place the groups were mixed and half of them were transported for approximately 2 hours. In the study 432 pigs were used.

Ekonomi vid uttag av långa toppar som skogsbränsle i slutavverkning :

The market for biofuels from the forests have had a positive development and the job initiators for this master´s thesis wanted to examine the profitability of a method for harvesting forest fuel, which was unfamiliar to them. The method was the ?long tree tops-method?, here called the LT-method. The LT-method is characterised by the fact that timber is harvested as the only roundwood assortment while the rest of the stem, which in other cases would become pulpwood, is harvested as forest fuel together with the logging residues. The method is based on the assumption that advantages in handling of the forest fuel assortment such as increased load weights for forest hauling and truck transportation, should compensate for the lower price for pulpwood when sold as forest fuel. The aim of the study was to compare the profitability of the LT-method with the GROT-method (harvest of timber, pulpwood and logging residues) and conventional logging without any harvest of forest fuel, and aslo to try to identify factors affecting the profitability of the different methods.

Analys av GPS Timber vid Rundviks sågverk

Rundviks sågverk investerade vintern 2007 i systemet GPS Timber. Systemet som är GPS-baserat syftar till att underlätta timmerhanteringen och säkerställa att rätt timmerklass läggs i vältorna och på sågbordet. Dessutom samlar systemet fortlöpande in data angående truckarnas aktiviteter för att möjliggöra analys av vad som sker på timmerplanen.Studien syftar till att undersöka vad införandet betytt för truckförarnas arbete med timmerhanteringen samt vad systemet har för effekt på ekonomin. Med hjälp av insamlad data av GPS Timber ska analysen dessutom resultera i potentiella effektiviseringsområden rörande timmerhanteringen för att förbättra ekonomin i en relativt dyr process. Analysen har visat att truckförarnas arbete har förenklats mycket i och med införandet av GPS Timber.

The impact of the EU Timber Regulation on the Bosnia and Herzegovinian export of processed wood

Illegal logging and its related trade is of great concern around the world. The European Union Timber Regulation (EUTR) is a regulatory approach by the EU to prevent illegal timber and timber products to be placed on the European Union inner market. This means the regulation affects both actors in the member countries as well as the actors exporting timber and timber products to the EU from non EU member countries. This study aims to study the implementation process of the EUTR in Bosnia and Herzegovina (B-H), and its preconditions. Institutional theory is used to understand and explain how the EUTR affects B-H organisations? business environment, and how the organisations choose to respond to the EUTR.

Logistik för stråbränsle :

Summary Today energy prices are rising. As a result biomass fuel is getting more and more interesting. Wood chips is very popular, but also straw from grain production is on the table. Lunds Energi AB project a combined power and heating plant in Örtofta out of Lund. Wood chips is meant to be the main energy source, complemented by straw. In this thesis the transportation of straw for fuel is studied.

Framtagning av hjälpfunktion för PDM-system

Syftet med detta examensarbete har varit att ta fram ett förslag på utformning av en målgruppsanpassad hjälpfunktion för PDM-systemet på Bombardier Transportation i Västerås. Företaget Bombardier tillverkar flyg (Aerospace) och tåg (Transportation) och huvudkontoret för Transportation i Sverige ligger i Västerås. I företaget används ett PDM-system (Product Data Management) för administrering och distribuering av data och processer kring design, tillverkning, hantering och återvinning av produkter. Information om PDM-systemets funktionalitet finns tillgänglig genom flera olika källor som både är officiella och inofficiella inom företaget. Dessa källor finns både i tryckt och i digital form. Bombardier Transportation i Västerås har efterfrågat ett förslag på en gemensam hjälpfunktion som ersätter befintliga, och istället sammanför nuvarande information till en enhetlig och lättanvänd hjälpfunktion. Hjälpfunktionen har utvecklats i form av en digital manual placerad i anslutning till PDM-systemet och innehåller information som läses på skärm. Informationen om PDM-systemets funktionalitet och användning förklaras för nya och befintliga användare.

Dubbskador på Alvestakubb

Mechanical harvesting may result in timber damages leading to reduced saw log quality. The initiator of this study was VIDA ? a privately owned concern operating in the value-adding process industry of forest raw materials. The aim of this study was to examine the type and amount of damages on Alvestakubb caused by the harvester head during the cutting process. The aim was also to compare the damages caused by different types of feed rollers and to evaluate the effects of temperature on damage occurrence.

Ökat flöde genom timmersorteringen vid Ala sågverk

Ala sawmill in Ljusne, Hälsingland, has increased its flow through the sawing plant during the last couple of years. The problem now is the sorting plant, as this part of the mill is now slower than the rest. A close analysis of the sorting plant was therefore necessary to be able to increase the flow through. The aim of the project was to find solutions that can lessen downtime and increase flow. The goal was to increase the flow from 650 to 925 logs through the sorting plant per hour.

Förekomst & kostnad av kapsprickor i stormaskadad skog

The aim for this study where to investigate the frequency of cutting cracks in saw timber harvested in the storm-damaged forests in regions where the storms Hilde and Ivar hit. The idea for this work came from one of the region?s biggest actors, SCA Skog and Jämtlands district. The purpose where to find out how big proportion of the saw timber that contains cutting cracks, their financial cost in lost wood value and also give advice and suggestions on how to work against the frequency of cutting cracks. For the field-study some guidelines where used to make sure that the samples were taken under the same conditions, they were: ? The field-study must be performed under harvesting of storm-felled forest, which are horizontal/inclined trunks. ? The averaged sized tree will make it possible to harvest saw timber. ? The trunks can?t be root cut. A methodology called in Swedish ?Trissmetoden? was used because it is the most frequent used methodology in earlier performed studies and the only one that can be used I field. Under the field-study data were collected from 570 saw timber logs, 30 logs from each one of the tested harvesters.

Stolpverksmallar: Om hj?lpmedel f?r ?verf?ring av fasta m?tt och former

The thesis has investigated the use of templates in timber framing, a field where there has previously been a lack of comprehensive and clear information. The main goal was to map and describe the various types of templates, their appearance, usage, and function, in order to make this traditional craft more accessible to both professional craftsmen and DIY enthusiasts. The project also aims to contribute to the preservation of traditional building crafts, in alignment with UNESCO's Convention for the Safeguarding of Intangible Cultural Heritage. The methodology used in this study was a literature review, where relevant templates were gathered and analyzed. The templates were then categorized using a system developed by the author, which helped simplify the understanding of the templates functions and uses.

Kommunikation i dubbel bemärkelse : Enkätsstudie av barnfamiljer och SL:s digitala plattformar 

As a result of a successful human development around the world an extensive urbanization of societies are taking place that are networked in various ways. In these networks, increased travel and digitization are central where individuals and organizations converge in a constant and immediate wireless and mobile technology flow. An example of this is Stockholm and its public transportation company Storstockholms Lokaltrafik (SL). Although most participate in most of the network society, SL is struggling with an audience that seldom travel with them: families with children. We intended to find out how the communication of SL´s digital platforms could get families to travel more with public transportation.

Ändamålsanpassad TINA-sortering av sågtimmer :

Swedish sawmills of today suffer from unsatisfying economy with high costs and low benefits. The economical result depends on how well the sawmill can use their raw material. Iggesund Timber AB, a sawmill in the Holmen group, produces a large amount is enduse orientated products for the woodworking industry. Therefore the aim of this student thesis was to investigate the possibility of automatic enduse orientated quality grading of Scots Pine (Pinus sylvestris) saw logs by using a gamma-ray log scanner. Iggesund Timber AB has the possibility to grade logs automatically with TINA, a two way gamma-ray log scanner. Grading and classification of Scots Pine logs in Sweden today are mainly manual but can in some rare cases be automatic.

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