In this report the importance of irrigation scheduling in dry climate is shown, how it can save water and energy; how this method can improve crop yield by supplying the right amount of water at the right time. It is shown how irrigation scheduling and irri-gation technology together increase the irrigation efficiency..

The goal of this Master thesis has on the one hand been to create a simulation environment for robots, where not only the simulations in this work can be performed, but also similar robot simulations, and on the other hand to study regulators that can increase the possibilities of rejecting disturbances on an industrial robot. The robot model used has three degrees of freedom, corresponding to the three main links on ABB:s IRB7600. The simulation environment is created using Matlab, Simulink, and Robotics Toolbox. It is constructed in a general way and can be used for simulations of other robot objects created in Robotics Toolbox. A gain scheduling is added to the LQ-regulator, where the feedback matrix is varied depending on the arm position in the workspace.

For research purposes Saab has developed a generic mathematical model denoted VEGAS of an aircraft with a configuration similar to JAS 39 Gripen. Today parts of Gripen backup control system are used also for VEGAS making the system subject to both corporate and defense secrecy. The main objective of this master thesis is to design, verify and implement public pitch axis flight control system for VEGAS. Furthermore, simplifications regarding the design process is to be examined. Design of pitch axis flight control system for the entire flight envelope has been carried out.

Organisationspsykologi kan ibland upplevas allt fo?r problemorienterad med stort fokus pa? just problem och konflikter i organisationer. Det finns dock en inriktning pa? de fo?rha?llanden och processer som bidrar till att ma?nniskor, grupper och organisationer kan frodas och fungera optimalt. Denna studie syftade da?rfo?r till att underso?ka eventuella samband mellan positiv feedback, self-efficacy, locus of control och socialt sto?d.

A well known optimization-problem of multiprocessor system is scheduling of tasks. In this paper I use a variant of previous known algoritm, (Fast Critical Path) for scheduling real-time tasks on a multiprocessor system. This is made in a simulation study in MATLAB. The system architecture is assumed to be a MIMD- machine, (Multiple Instruction stream Multiple Data stream) with bus-typologi and message-architecture. Scheduling was made on this system where the number of processors varying from five to ten.

When a helicopter is flying, the dynamics vary depending on, for example, speed and position. Hence, a time-invariant linear model cannot describe its properties under all flight conditions. It is therefore desirable to update the linear helicopter model continuously during the flight. In this thesis, two different recursive estimation methods are presented, LMS (Least Mean Square) and adaptation with a Kalman filter. The main purpose of the system estimation is to get a model which can be used for feedback control.

The control of indoor temperature must be able to handle large time constants and both measureable disturbances like outdoor temperature, and non-measurable disturbances, like waste heat from appliances. Due to cheaper microcontrollers (small computers with designated tasks) with better performance, more advanced and computation-demanding methods for control can be used.In this thesis, Generalized Predictive Control (GPC) has been implemented and tested on a theoretically derived model of a house. GPC states that a model of the system is estimated in every sample, and the control is carried out simultaneously, based on predictions of the model. Disturbances like solar radiation can be estimated and used in the control as well. The control signals are determined by quadratic programming, which makes it possible to consider conditions, for example limitations on the control signals.GPC requires a number of parameters to be defined, like model order and control signal penalty, but is relatively robust for variations in them.

Through analysis of the work of scheduling the doctors at the hospitals of Sundsvall,Gävle and Karolinska in Stockholm this thesis presents some conclusion about howand why a computer system would benefit these very tasks. The reason for doing thisis mainly to save money through more efficient scheduling, but also to minimizeerrors and maximize comfort for scheduler and doctor alike.Scheduling consists of collecting doctors? requests, assessing the need of staff,distribute the available doctors and make sure all tasks are covered throughout thescheduled period of time. The work is often very complex and involves manyvariables ranging from competence to personal whishes and economical constraints.Solving these problems takes a lot of time and energy which could be better spentcuring patients.The conclusion of this thesis is that there is reason to develop such a system to savetime and optimize resources. A description of the system is found in numerous lists ofroles, tasks and prototype sketches which combined shape the content andfunctionality.

Lärare använder sig av olika metoder för att hjälpa studenter att utveckla de verktyg de behöver för att lära sig engelska, eller något annat ämne. En metod här är muntlig feedback, som används för att uppmuntra elever eller korrigera dem när de utför språkliga fel. Vårt mål med detta examensarbete är därför att undersöka vilka typer av muntlig feedback som kan hittas i ett klassrum där man lär sig engelska som främmande språk och vilka attityder som både lärare och studenter kan ha gentemot muntlig feedback. Tre typer av undersökningsmetoder har använts: observationer, intervjuer och enkäter. Resultatet visar på att studenter förhåller sig positivt till muntlig feedback i klassrummet, särskilt explicit corrective feedback.

With the advance in computer and network technologies, multimedia systems and Internet applications are becoming more popular. As broadband network is prevailing, more clients are able to watch streaming videos or to play multimedia data over the Internet in real-time. Consequently, there is an increasing demand in the Internet for streaming video systems. As the run-time environment of such applications tends to be dynamic, it is imperative to handle transient overloads effectively. The goal of this work is to develop an algorithm that would provide a robust and controlled behavior of the video system so that important data is delivered on time to the video clients.

AimThe purpose of the survey was to see how students relate to feedback in physical education. The aim was also to find out how students like to receive feedback (written, oral or timing). The survey will also specify what kind of feedback the teacher provides.QuestionsHow do students react to feedback?How do students want to receive feedback?What kind of feedback do the students receive during the lessons in physical education?MethodThe method used in this study was qualitative group interviews with an observation before the interviews. The school that participated was my placement school during my teachers program and it is located in a suburb south of Stockholm.

Syftet med föreliggande studie var att få en större förståelse för hur några lärare upplevde feedback i sin arbetssituation. De frågeställningar som studien baserades på var: Vilken inverkan har feedback på arbetsglädjen på en arbetsplats, sett ur ett medarbetarperspektiv? På vilket sätt har denna feedback en relation till lärarnas utveckling av sin egen feedbackkompetens? Det metodologiska angreppssättet var en semistrukturerad intervjuguide. Urvalet bestod av åtta lärare. Intervjuerna varade 20-35 minuter.

To have a functioning organization where there is a self-development for employees them selves, as well as between managers and employees, where employees are empowered and work for the organization and its goals. Feedback seems to be the main instrument to solve problems and create that organization. At the Military Academy Karlberg and the basic officers training there is a lot of discussions about feedback and how it is supposed to be carried out. This essay discusses the matter of how well we live up to the demands set by leadership classes at the Military Academy, what the platoon leaders do think about how feedback takes its expression. The questions about how feedback is used are to be answered by interviews with five platoon leaders and their thoughts about how feedback is communicated at the Academy.

There are problems with poor quality, poor scheduling and poor working climate in the Swedish construction industry. Many parts have been involved, trying to solve the problem.This spring a new planning and building-law becomes final. In this law, the requirements set on the controls are greater. Hopefully this will lead to fewer construction errors. The requirements set on the working environment have also increased, forcing consultants and contractors to focus on safe workplaces.For each project requiring a building permit, an inspection plan has to been drawn.

This thesis is closely related to the Dynamically Self-Configuring Automotive System(DySCAS) project. DySCAS is a middleware for electronics in an automotive system. Thethesis work has been performed in cooperation with ENEA. Parts of the demonstrationplatform Self configurable High Availability and Policy based platform for Embeddedsystem (SHAPE) developed for the DySCAS project by ENEA have been used in theimplementation phase of this master thesis.The goal of this thesis was to evaluate how the Meteor MW, an offspring of the DySCASmiddleware, should handle QoS and to design a Quality of Service Manager (QoSM) for theMeteor MW that fulfilled hard real-time requirements. The thesis also had the objectiveof analysing and identifying the requirements on such a QoSM from a QoS perspective.Specifically the requirements to guarantee real-time support for applications running onthe MW.