The forestry companies? operational planning process is these days dependent on reliable, efficient and user-friendly computer-based support systems. This study is an evaluation of Holmen Skog's current computer-based systems. The aim of this study is to: ? investigate the work pattern of the production managers when using the information system to plan the harvesting operation; ? investigate the efficiency and user friendliness of the information system with the different work patterns and to find the strengths, weaknesses and bottlenecks in the current system; ? find out if the type of object, the volume, the area of the harvesting object affects the time and work pattern; ? examine how this type of study is met by the employees and what factors that is critical to avoid feelings of intrusion. The conclusions of the study were: ? there is a large variation between the work patterns of the production managers and the time spend to perform the operational planning; ? the mainframe computer system used by Holmen Skog is clear, has short response times, is robust and conveys relevant information; ? the computer systems are however divided in many subsystems.

Holmen Paper is one of Sweden?s leading manufacturer of paper, with two Swedish production facilities located in Norrköping and Hallstavik. The European continent constitutes the company?s largest customer base which makes the company?s distribution system an integral part of the business. Historically, much of the produced paper has been transported by vessels, as vessels allow large volumes of goods and deliveries to markets which are difficult to reach with other modes of transportation.

Abstrakt Detta kandidatarbete handlar om visuella effekter inom film och dess utveckling genom åren. Visuella effekter har öppnat en ny värld för filmskapandet då man kan skapa i princip vad som helst vilket gör att det omöjliga helt plötsligt blir möjligt, på filmduken. Kandidatarbetets syfte är att titta på utvecklingen av visuella effekter och hur man kan använda de kunskaper i en mindre filmproduktion. Vår problemformulerings frågeställning är ?Hur har utvecklingen inom visuella effekter sett ut och hur kan man implementera dessa kunskaper i en mindre filmproduktion??.

Half of Sweden?s 140 000-150 000 sows are culled and replaced by 75 000 gilts annually. Culling of old sows is necessary and allows new breeding material to enter the herd. However, many of the culled sows are young, and have not yet become profitable at the time for culling. Therefore, it is an important question for the pig industry, how to raise gilts to sows with a high and sustainable production level.

The aim of this work was to find out what potential contaminants from roads, residential area and businesses within Svedens industrial area that can affect groundwater quality and quantity. Data collection was from SGU, VISS, internal material from Gävleborg county Administrative Board and Gävle municipality archive. GIS software ArcGIS was used to create the map images in the work. The studied area is located approximately ten kilometers west of Gävle city and consists of the esker Valboåsen, which is a glacifluvial deposit that in its central parts consist of coarse material that is overlaid by sand, clay and silt. North of esker Valboåsen there are the river Gavleån which has an inflow to the groundwater in the esker. This inflow represents the largest part of the groundwater recharge.

An analysis of a specific application of anaerobic wastewater treatment at a pulp and board mill, Stora Enso Skoghall, was carried out. A literature study was done and effluent wastewater from CTMP pulp production was analyzed. The analysis consisted of a broad constituent analysis and an anaerobic treatment trial. Results from these test where used to calculate the treatment effectiveness and resulting energy potential at the mill.The literature study and constituent analysis showed that toxicity of the water to be treated, due to wood extractives and sulphur content, was of concern. Detoxification chemicals targeting these constituents where used in the anaerobic treatment trial.

The limit for mercury in fish, set by health authorities, is exceeded in about half of the lakes in Sweden. Methyl mercury (MeHg) is the most toxic form of mercury and accumulates in fish. Therefore transformation of inorganic mercury (Hg) to methylmercury (MeHg) is an important process that we need to understand in order to possibly counteract the negative effects of mercury in the environment. The seasonal dynamics of mercury biogeochemistry is likely of great importance for the accumulation of MeHg in the aquatic food web. In thesis the chemical speciation and transformations of Hg and MeHg in bottom waters and sediments is followed in Ängessjön, a small lake located on the east coast in the middle of Sweden. The lake is not directly affected by any industrial pollution and concentrations of Hg in the sediment reflect the atmospheric deposition in this area, as well as processes taking place along the hydrological pathways from soil to lake. Samples from sediment, bottom- and streamwater were collected in average every second month during the period Feb.

AbstractThe purpose of this study was to identify problems that may occur in the execution of a civil engineering project and suggest measures to reduce the risk of errors. The study was conducted in cooperation with a civil engineering company in the Gothenburg area. During two weeks in February 2012, a field study took place on two construction sites where disruption and problems that took more than 15 minutes to correct were noted. During the field study we identified 39 such occurrences in the projects and then these were classified into different categories according to their cause.The two largest categories were "Design" and "Planning", which accounted for half of the errors that were discovered.In the study results were evaluated to decide whether it was possible to detect discrepancies at an earlier stage. The cost to fix an error in the design stage may be significantly less than to correct the problem in production.According to the evaluation, 55% of the errors could have been detected earlier if there was a greater degree of observation for such issues by everyone involved in the project.

The purpose of this review was to study the cow eye physiology, focusing on how it registers light, and to see how light affects the cow?s milk yield. It has been showed in studies that more hours of light per day (16 hours of light a day) as opposed to about 9-12 hours of light a day, increases milk yield for dairy cows. This review contains suggestions on how this is connected with the physiology of the eye. Vision is an important sense for many mammals, and is used to check out the animals surroundings. Sensor cells in the eyeball help in turning photons from the light into signals to the brain.

Detta examensarbete syftar till att exemplifiera vilka informationsparametrar som är nödvändiga för att Building Information Management på ett bättre sätt ska kunna implementeras i produktionsfasen. För att uppnå detta mål har vi analyserat utvecklingen och nyttjandet av Building Information Management genom tre olika datainsamlingsmetoder; litteraturstudie, observationer och intervjuer.  I detta examensarbete har vi fördjupat oss i för- och nackdelar samt hur Skanska Sverige AB kan tillämpa Building Information Management som hjälpmedel i arbetsberedningar. Denna fördjupning har lett till att vi kan analysera vilka produktionsanpassade informationsparametrar som en produktionsledare behöver i sin tjänsteroll för att dra nytta av Building Information Management.Vi anser att användandet av en BIM-modell kompletterar produktionsledarens ledaregenskaper, vilket gör det lättare för denne att nå fram med informationen till yrkesarbetarna, då visualiseringen underlättar förståelsen inför aktiviteten. I denna rapport kan läsaren ta del av de slutsatser vi kommit fram till..

To turn the dairy heifers out on pasture is the most natural way for the cattle to get feed. At the same time it is cheap and if it is right treated a feed of high nutritive value. The problem today is to get dairy heifers to grow enough when they are grazing at natural pasture for the entire summer. Therefore, the opinions differ whether pasture is a resource or a problem. The increasing interest of pasture production is due to the fact that you can receive grants for preserving valuable natural assets and cultural landscape elements in the pasture land. A high grazing pressure is necessary to preserve an open landscape and a great variety of species. In the same time the heifers have to supply their nutritive needs in order to grow and be large enough to show heat and be pregnant in right time to calve with a sufficient body size and at an economically right age. This paper includes a literature review on natural pasture, pasture production, and growth of dairy heifers together with own interviews with dairy farmers about their point of view to the pasture husbandry on the farms, how they plan for pasture, look after natural pasture, treatment areas and take care of the calves and heifers. The results indicate that the time it takes and the demanded work are the biggest factors to how and why the farmers do as they do..

IRB 340, Flexpicker is an industrial robot used for sorting, packaging and the handling of details up to two kg. The Flexpicker is a delta robot, meaning that it with three arms controls a triangular plate, swivel, in a work area shaped like a cylinder. Joints using plain bearings connect the arms.The plain bearing in use today consists of a plastic ring which slides against a hard anodized joint ball. Despite the fact that the plastic contain friction-lowering additives, the bearing needs to be lubricated to prevent noise. Because the robot is used in food and drug handling environments, where the demands on hygiene are set very high, the robot is often washed.

During half a century the society has been changed from an industrial to knowledge-driven society. Industry companies have standardized requirements and companies that works with development in production has unique qualifications. The public employment office was created during a time that each tailored to then general requirements were dominating and the adaptation average appropriate worker and appropriate work where general. When the monopoly was stopped, crew companies begun to settle down on the market that flexibly adapt themselves to carried out now specialized needs that require sophisticated adaptation average work and job seekers. Companies lose the confidence for the public employment office and politicians threaten the organization with big closure.

How can we plan so that smallscale industry and businesses can become an integrated part of the city? The densifying process in search of new housing areas that is going on in most swedish cities threatens to undermine the diversity and complex make up of central parts of many cities. To sustain industrial activities in central locations is critical to this diversity. This thesis discusses how to reach a sustainable city planning with Bellevue, a small industry and business area in central Gothenburg, as an example..

The little steel industrial community Hofors is situated in Gästrikland on the border to Dalarna and its population is decreasing every year. The biggest housing operator is in a place where they must tear down a lot of buildings because they do not have enough tenants. But what do people really want in an apartment and in the surroundings? What is needed to make it attractive? That is something that this study will discuss and in the end it will lead to a proposal of an area that is suitable for a new housing and a few proposals to make the existing apartments more attractive..