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8430 Uppsatser om Operations research - Sida 21 av 562

Timeliness cost for agricultural sprayers : weed control in cereal crops

Evaluation of machinery costs is necessary for selecting appropriate farm machinery. Timeliness cost due to untimely operations is an important component of machinery costs. Timeliness costs can be high for crop sprayers, since pesticide application must be carried out within a short time interval. This Master thesis investigated the timeliness cost and the probability of a suitable workday for spraying. Timeliness factors were estimated for four different crops (oats, spring wheat, winter wheat and barley) using historical weed trial data.

Flow i fokus : processen att göra ett spel genom research through design

Starting out as a minor form of amusement, the game industry has become one of the most lucrative andsuccessful in the entertainment business competing against giants such as television, movies and music.As the internal competition within the developer community grows companies work hard at discoveringnew ways to attract and keep customers. By having a playcentric approach focusing on user experiencethey hope to achieve that goal. This thesis describes the process of designing a game with focus on theplayer. We apply the concept of flow on game development and investigate through research throughdesign if we are able to create a game that keeps the player in flow.Play tests showed several elements such as control issues and too difficult challenges early in the game,affecting the possibility for players to experience flow while playing. These negative factors came to becalled flowleakers.

Krav på demokrati för att få gå med i klubben ?samma nu som då? : En jämförande fallstudie av demokratikrav som ställs av Europeiska Union i samband med ansökning och anslutning.

The purpose of this essay was to research the level of condition and requirements of democracy which faces states applying for a membership in the European Union. The focal point was to research the levels of democracy requirements on two set enlargements which are the cases of the 1981 and 1986 enlargements together with the 2004 and 2007. The states that did reach the goal of becoming member states had similar political backgrounds that made them suitable for a most- similar system study. By using my theoretical framework which consists of democracy theories, together with the chosen method was I able to find answers to my research questions when examining the material. The result of the study is that even though the condition might have been quite similar but the reality of them was different.

Comparative analysis of Thermal Barrier Coatings produced using Suspension and Solution Precursor Feedstock

The research work performed in this thesis has been carried out at the Production Tech-nology Centre where the Thermal Spray research group of University West has its work-shop and labs.This research work has been performed in collaboration with the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, India.First of all, I would like to express my sincere thanks and gratitude to my supervisors Dr. Nicolaie Markocsan and Dr. Nicholas Curry for their guidance, great support and valuable suggestions without which this work could not have been possible. I would also like to thanks Prof. Per Nylén for keeping faith in me and providing me an opportunity to work at PTC, which is a great place to perform research.

Militära ?mobil-appar? : Den militära nyttan med kommersiell teknik för militära ändamål

The transformation of the Swedish Armed Forces is bringing about major changes in many areas. Indirect fire is one capability affected by these changes. Financial savings, a shrinking organization and higher eligibility requirements mean that fewer soldiers will gain access to exclusive high-tech support resources such as the JAS 39 Gripen aircraft and the ARCHER artillery system. This thesis aims to examine whether access to indirect fire capability can be increased through the use of civilian products and communication networks. Technology development in the civilian mobile communications area is exponential and nations such as the USA, facing challenges similar to those of the Swedish Armed Forces, devote substantial resources to research and development.

Rätt till sjukersättning : en praxisstudie om orsaker till skillnader i bedömningar vid förvaltningsrätterna

Since the nineties the words customer, effectiveness and quality have become part of everyday school life. Municipalities? makes regular customer surveys to measure both independent schools as municipal schools ' quality. A common method for customer research and background studies is that parents and students are asked to respond to simple Web-based surveys. Customer satisfaction and/or customer dissatisfaction options are presented in tabular form, based on the percentage that expresses a particular position within a query.

Invandrarelevers skolframgång : En studie om de sent anlända ungdomarna i gymnasieåldern

This essay is a study about school success for immigrant pupils whose ages are between 16 and 19 years when they arrive to Sweden.The purpose of this study is to examine pupils difficulties in the school and the faktors which affect their success in the school and even possibilities which they can be offered by the school.This research carried out at two upper secondary schools in the municipality of ?Södertälje?. The method which I have used is a qualitative research method which depends on interviews.The results of the research shows pupils difficulties and the different faktors which influence their success in the school.My conclusions are that these pupils have many difficulties and to reach a successful schooling, the shcool have to give these pupils a variety of possibilities which builds with pupils self possibilities a foundation for a good and successful schooling.The research also shows that the both schools are not giving enough possibilities to these pupils. The education system in these schools doesn?t fits for multi ? lingual pupils.

Gränslandet mellan skola och arbetsliv

This degree project documents the meeting of four high-school students with working life before and during the practical training period, which is a mandatory part of the Swedish media curriculum. We looked into practical training, which we qualify as the crossroads between school and working life, from a student?s perspective. We chose to approach the problem theoretically via hermeneutics and we used the case study method for our field research. The foundation of our pre-understanding of the media curriculum?s practical training period lays on previously published research, the study of specialist literature, own experience gained during practical training and teaching experience at high-schools as well as a pre-study we carried out.

Det digitala folkbiblioteket : vision och verklighet

Today, "the digital library" is the common way of describing a managed collection of information, with associated services, stored in digital formats and accessible over a network. Digital libraries have mainly been developed at research libraries, but during the last few years public libraries have started to offer similar services.The aim of this Master's thesis is to study how the Swedish public libraries plan to develop their digital libraries according to their mission statements, and in what way they have implemented them at their web sites. 21 public libraries, the largest in each Swedish county, were investigated.The library mission statements are investigated to find out in what terms the digital libraries are described and to what extent. The library websites are examined with respect to what kind of digital services are offered, to what extent they supplement or replace the physical library, and if there are new digital services not found in the physical library.In most mission statements the digital library is referred to in sweeping terms like "IT activities" and "new media". However, a few of the libraries clearly regard the digital library as an important part of the future operations, speaking of it in well defined and extensive terms.The public library websites are relatively homogeneous when it comes to services supplementing physical library activities, like web access to the library catalogue and links to other library catalogues.

Parallel Import of Pharmaceuticals in the EU

Parallel import in the European Union is the perfectly legal activity under Art. 28-30 EC of buying goods in a low-price country in order to ship and sell them in a high-price country. The pharmaceutical market in Europe is subject to the subsidiartiy principle of Art. 5 EC and heavily characterised by national regulations that lead to significant price differentials between – generally speaking – Northern and Southern Europe. This incites the activity of parallel traders in the first place, who act as arbitrageurs.

Budget i kombination med balanserat styrkort : En fallstudie av kommunal verksamhet

A budget consists of figures showing how much a particular activity has access to during a given year. With a balanced scorecard, these figures and guidelines can be converted in to more easily understandable non-financial instructions for the employees. One of the most significant differences between the budget and the scorecard is that the budget focuses on short-term results while the scorecard focuses on long-term visions and goals. With a long-term thinking the leaders can  set more long-term goals and also make more well-planned investments which increases the possibility for the organization to evolve and become better in the long term. By combining the two instruments a good balance between short and long term perspectives can be achieved, which creates a more effective steeringIn the 1990s, many of the municipalities introduced needs budget, one of them was Gothenburgs municipality.

Effektivare röjningssätt med kedjeröjsågen?

After the mandatory rules for clearing was removed in 1994, the clearing area has increased in Sweden. After the storms Gudrun and Per, the areas became planted with new plants, mainly spruce, but also other tree species. Storm areas are now being invaded by naturally rejuvenated birch in the tilling tracks. Since the birch often is initially growing faster than the spruce it is inhibiting the growth and is also damaging the spruce. The purpose of this thesis is to study the new brush saw with chain and compare it with the conventional clearing saw, mainly in terms of performance and ergonomics. The results show that the new brush saw with chain is very good in almost all clearing operations compared to the conventional clearing saw.

Skapande av organisationskunskap i små, unga forskningsintensiva företag : En studie av tre företag i Uppsala

Because of among other things the globalization and a focus on core competencies knowledge has become very important for the companies of today, especially for research-intensive companies. The problem is that the companies become more sensitive to how knowledge is created and spread, that is, how organizational knowledge is created. Especially sensitive are companies who are small, young and research-intensive. The purpose with this thesis is to explore how organizational knowledge is created in small, young and research intensive companies.The theory is based on a five-phase model of organizational knowledge creation and four modes of knowledge conversion described by Nonaka and Takeuchi (1995). These concepts constitute the foundation of the analytical model used in the thesis.The study is carried out by qualitative, highly structured interviews with low standardization.

The Success of None-Joint Venture Strategic Alliances

The companies? managements acknowledge personal relations and trust, through good communication and predefined responsibilities and goals, as key factors to succeed in strategic alliance. These factors did not always exist according to the employees? involved. This research, in contrast, suggests that these factors are subordinate to the correlation between the company?s vision and the alliance objectives, hence level of priority, which indicates that management has hidden motives for entering the strategic alliance.

Universell kunskapsorganisation: identifiering av ett framväxande forskningsområde genom citeringsanalys.

An ongoing discussion concerning the possibilities of universal classification based on phenomena rather than on research disciplines has been noticed. In order to discover if this was a limited discussion or the beginning of a major new field of research a study of citations was made using the database Web of Science. In addition, references of the works concerned were studied to find out where the ideas originated. The study of references shows that the ideas originate in a limited number of older published works, some of them well established in Information Science, some of them less generally known. The main ideas commonly used in Information Science are Ranganathan?s facet theories and the work of the Classification Research Group.

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