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9693 Uppsatser om Control Theory - Sida 24 av 647

Generationsskräpsamling med explicit kontroll av hårdvarucache

This report evaluates whether an interpreted high-level garbage collected language has enough information about its memory behaviour to make better cache decisions than modern general CPU hardware.With a generational garbage collector, depending on promotion algorithm and generation size, around 90% of all objects never leave the first generation. This report is based on the hypothesis that, because of the low promotion rate, accesses to higher generations are sufficiently rare not to benefit from caching.To test this hypothesis, we built an operating system with a Scheme interpreter in kernel mode, where the interpreter controls the cache. Generic x86 PC hardware was used, since it allows fine-grained control of cache decisions.Measurements of execution time in this interpreter show that disabling the cache for generations higher than the first does not give any performance gain, but rather a performance loss of up to 50%.We conclude that this interpreter design is not an improvement, but cannot conclude that the hypothesis is false in general. We suggest building a better CPU simulator to gather more data from which to make better caching decisions, moving internal interpreter data structures into the garbage collected heap and modifying the hardware to allow control in the currently rigid dimension of where data is cached---for example separate control of instruction and data caches and separate data caches for different areas of memory..

SELF CONTROL

SELF CONTROL är ett undersökande examensarbete i textildesign. Med en textil hantverksmetod undersöker jag mötet mellan kontroll, tidsåtgång och material. Detta med utgångspunkt i en feministisk diskurs. Jag ser kontroll som något som exkluderar, censurerar och begränsar möjliga uttryck inom textilt hantverk på samma sätt som kvinnokroppen kontrolleras i ett patriarkat. Jag har använt mig utav en performativ och repetitiv metod som aktivt har gått ut på att bryta mot föreställningar om hur hantverket ska utföras.

Utvärdering av metoder för framställning och kontroll av digitala terrängmodeller

Today there are many applications of digital terrain models (DTM) and the requirements of low uncertainty increases. Most of the DTM are produced with Global Navigation Satellite System (GNSS), terrestrial laser scanning (TLS), airborne laser scanning (ALS) and total stations. Guidelines for the preparation and verification of DTM are found in Swedish Standards Institute ? Technical Specifications (SIS-TS) 21144:2007 and SIS-TS 21145:2007. These were defined in collaboration between Swedish National Rail Administration, Banverket, and Swedish Road Administration, Vägverket, to satisfy the needs of requirement formulations in the production of DTM planning, design and construction. The purpose of this paper is to produce and control DTM over Åkermans kulle, located west of the University of Gävle, according to SIS TS 21144:2007 using GNSS with network-RTK, TLS and ALS.

Företagande som strategi: -Frihet kostar trygghet, det måste man kunna leva med

Over the last decade the conversation on entrepreneurship has been both worldwide and intense. In Sweden, as in many other countries, this conversation has also concerned women?s entrepreneurship. Parallel with this conversation has been the debate on women in leading position in large corporations. This thesis aims to find out why and how women use entrepreneurship to handle existing conditions in life (such as the hardship of combining a traditional career with a traditional family life) and to create new conditions that suit them better.

Ett samhällsengagemang som Skapar Shared Value - En studie om hållbarhetsstyrning och Creating Shared Value i en svensk kontext

This study investigates the corporate sustainability activity, linked to the company's core business, which is a relatively unexplored field in a Swedish context. The study examines how the organization has used management control for its sustainability activity within two social initiatives; and whether these initiatives have generated value for the organization and involved stakeholders. Management control of social initiatives are examined within the theoretical framework of The Sustainable Balanced Scorecard and the organization's value creation contributions are outlined in accordance with a definition of the concept of Creating Shared Value. The method used for the implementation of the study is a qualitative study, embodied in an illustrative case study of a large Swedish company operating within financial sector. The empirical data was collected through 12 in-depth interviews with representative interviewees within the organization and with other stakeholders involved in the company's social initiatives.

Vetenskap eller pseudovetenskap? : En utvärdering av giltigheten i Poppers kritik gentemot Freuds psykoanalytiska teori på basis av demarkationskriteriet

In this essay I evaluate the legality of Karl Popper?s criticism against psychoanalysis, regarding this theory of Freud?s being pseudoscientific. Popper?s criticism is based on his theory of demarcation in which he states that an empirical theory must be possible to test by observations in order to be, as most important is, hypothetically possible to falsify based on other empirical statements ? often in the form of new found facts that contradict the original statement/theory. In purpose of assessing Popper?s criticism I perform a modified idea analysis, based on a book by Evert Vedung (1977).

Processdatorsystem för tryckreglering

The task of this project was to build an computer processing system for pressureregulation, in which the pressure loss over the open hydrolicvalve should be kept as low as possible. By using an cross connected proportional directional valve the valve problem could be solved. The control- and regulationproblem for the pressureregulation system was solved by using the DAQ- card NI6035E from National Instruments and the computerprogram Automatic Pressure Control 1.0 which has been software developed and written in Visual Basic. The final result showed that correct processvarible was obtained in 0,5 seconds, when the setpoint was changed in the testarea 0 - 2,5 MPa..

Kommunikationsstyrning vid reklamation : En studie av stormarknader

This study focuses on the internal marketing and how it affects the complaints by companies? communication control. Our purpose with this subject is to increase the understanding of which components affects the relation between internal marketing, communication control and complaints. We have chosen the subject, internal marketing because it caught our interest in an earlier course. On the basis of the literature of costumer complaint there have not been so much research about it and that is why we have chosen this perspective on internal marketing.This study is based on a qualitative approach.

Evaluation of the animal welfare work performed by the licensing committees and a proposal on how to establish an enhanced animal welfare assurance program for the Swedish Trotting Association

According to the basic values of the Swedish Trotting Association the horse and its welfare should always be held in highest consideration. One part of the animal welfare work in the organization is to ensure good horse management practices by controlling all active trainers through the local licensing committees situated at the Swedish racetracks. The Swedish Board of Agriculture stated that high quality animal welfare assurance programs used by the industry organizations can be used in the risk assessment of the official animal welfare control to make the official control work more effective and the ambition of the Swedish Trotting Association is to establish an animal welfare assurance program which may be approved by the Swedish Board of Agriculture. Racehorses are exposed to welfare hazards both in their management as well as during training and racing and factors like handling, training, feedstuff, stable environment, medication and the possibility to express natural behavior all affect the welfare of the horses. The aim of the project is to investigate and evaluate the animal welfare work performed by the licensing committees and to give advice on how to improve the industry?s animal welfare control.

Hantering av informationssystem

Lund who has over 90 systems in 12 departments and now wants to streamline the management of these IT systems. Governance of IT systems is something that Lund would treat as it carried a large amount of changes in their practices, where the control is something missed in trying to standardize their systems. What's missing for Lund Municipality is routine to fall back on in order to streamline the management when they get into these complex situations.Given that Lund treat so many systems make it so that the situation quickly becomes very complex due of the organization's structure. The municipality is divided into twelve departments that have their own goals, it is an organization that is organized, which makes creating standards become complicated when all departments have different needs. Our study was based on a framework that deals with complex environments that lack a clear definition.An analysis was conducted where we started from the theory associated with the interviews conducted in which we aimed to understand their decision and understand the processes that affect system development.

Mätning av kvalitetsbristkostnader i tillverkningsindustrin : En fallstudie på ABB Control Products Sweden

Detta arbete syftar huvudsakligen till att bidra med rekommendationer för hur ett system för mätning av kvalitetsbristkostnader hos ABB-enheten Control products Sweden bör upprättas. ABB:s globala riktlinjer för vad som ska mätas i ett sådant system har fungerat som utgångspunkt. I rapporten diskuteras vidare hur arbetet med mätsystemet ska upprätthållas utifrån ett ledarskapsperspektiv. I studien har en litteraturstudie legat till grund för en nulägesbeskrivning, en benchmarkingstudie, deltagande observationer och intervjuer. Rapporten innehåller också en sällsynt detaljerat beskriven kvalitetsbristkostnadsmätning som fungerar som riktmärke för enhetens fortsatta arbete med kvalitetsbristkostnader..

Vanmakt och motmakt i personliga assistenters relationer till brukare

The aim of this study was to examine the aspect of power in the relationship between the personal assistant and the disabled person he or she works with (the user). The study was based on interviews with five personal assistants who worked for private companies that provided personal assistance. Seven themes were identified and discussed. These were: the users amount of control over the assistance given, the workplace environment, the working conditions, the organization of personal assistance by private companies, the assistants recourses and usage of power and the users participation in chores. To analyze these themes I used Foucault's theory of power and the perspective of Human Resource.

Litteraturstudie : Prevalens, tänkbara orsaker och konsekvenser till ätstörningar

The present work has been implemented as a literature study aimed to investigate the prevalence, possibly causes and consequences of an eating disorder. In today's modern society individuals are living with a constant reminder from the media about how a person should look and act to blend into the social norms and expectations of the modern society. This literature review has been analysed on the basis of concepts such as identity, gender identity and gender. In addition previous research has been analysed in terms of themes, history, possible causes/risk factors, media, body image and control, depression, shame and guilt as well as culture. The above themes were analysed on the basis of behaviouristic theory and role theory.

Pudelns kärna : Vad det innebär att "göra en pudel" ur ett kommunikativt perspektiv

In this essay I want to investigate how the poodle strategy affects a person?s credibility when he or she uses it. The poodle strategy is a strategy, which someone uses when he or she is scrutinized by the media. It?s primary purpose is to suppress further media coverage but it is also a strategy for defending oneself and hence rescuing one?s reputation either as a private person or as an official.The essay?s research questions are:How has the strategy been applied for defensive purposes and what are the results?To which extent can the Stasis theory and Benoit?s theory on Apologia be connected to the strategy?Does the strategy affect the user?s credibility?To answer these questions four cases from the political sphere in Sweden where persons have been said to have ?done a poodle? have been analyzed.

FPGA för displayhantering och grafikgenerering i fordonsmiljö

This report is part of the major thesis carried out at Stoneridge Electronics in Bromma,Stockholm during autumn and winter 2005-2006. The background to the thesis is the trendwithin the automotive industry where color displays have become more common for presentationof information to the driver, a trend that has come to the commercial vehicle market. Thepurpose of the thesis has been to evaluate whether programmable logic, with respect to FPGAtechnology, could be suitable for display control and graphics generation of these more complexcolor displays in automotive environment.Within the scope of the thesis the FPGA technology has been investigated, i.e. whatopportunities and threats there are with aspect to environmental and security requirements. Inaddition, the market of FPGAs and pre-built IP-cores has been investigated.

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