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2962 Uppsatser om Intelligent systems - Sida 50 av 198

Development of Liquid Cooling for PCs

In recent years, existing solutions for cooling personal computer CPUs have been supplemented by a new product category, factory sealed water cooling loops. These systems, consisting of a water block with an integrated pump, a fan and a radiator, perform well compared to the air cooling solutions but are less effective than larger, custom-built water cooling systems.This project aims to explore the most important aspects of a factory sealed system and to identify possible cost-effective enhancements of the performance.The most significant differences between the different groups of water cooling loops are the block design and the pumping power. The performance of both categories is also largely dependent on the fan power, but increasing fan power has a large negative impact on the noise level.Both radiator size and fan model choice appear, in tests, to be relatively unimportant, presuming that the noise level is kept constant. The position and direction of the fan, however, has significant impact on both the temperature and the sound level.Water blocks can be designed in several different ways, both regarding the heatsink design and the flow direction. In simulation, flow with the inlet centered above the heatsink result in considerably lower pressure drop and slightly higher temperatures than flow through the block, for heatsinks with fin arrays.Creating a competitive product in this product segment certainly seems possible, as there are performance-increasing changes to be made that seemingly has little impact on the production cost.

En kombinerad Organisk Rankinecykel och värmepump integrerat med ett fjärrvärmesystem : Där värme- och elproduktion samt lönsamhet studeras och avfall är huvudbränslet

The demand for district heating is expected to decrease in the future, due to competition from heat pumps and energy efficiency measures in buildings. Development of existing district heating systems is therefore necessary for district heating companies to maintain market shares. This Master?s thesis describes and investigates the heat and electricity production and profitability of a combined Organic Rankine Cycle (ORC) and heat pump that is integrated with an existing district heating system. The studied district heating system is utilizing heat from waste incineration. In Sweden waste constitute 20 % of the fuel mix used in district heating systems, and this share is expected to increase in the future.

Anser kunden att ett WIS kan gör denne vis? : Kundens önskemål om informationsinnehåll i ett webbaserat informationssystem

The web has a broad affect on the global economy and can among other things be used for web based information systems (WIS). These systems have grown from being used as a market platform to support all activities in the work of an organisation of today. To survive in a turbulent competitive environment, companies must start to cooperate with their customers instead of just collaborate with them. Can an IT-consultant company use a WIS as a tool for keeping in contact with existing customers to attain this cooperation? A WIS could strengthen the relation between customer and supplier and through that have a possibility to increase the customer use since it can facilitate business processes and imply that services can be offered in a new way.

Transition from nomadic pastoralism to livestock based agro-pastoralism : the case of animal husbandry in West Pokot, Kenya

West Pokot County is located in North Western part of Kenya where the previous lifestyle was nomadic pastoralism. However, in recent years the semi-arid county has been under dramatic developments and a sedentary agro-pastoral lifestyle is now growing. This is a major change in production systems and there is a big knowledge gap especially for the livestock based agro-pastoral systems. The main objective of this study was to investigate the current situation of animal husbandry in West Pokot. Twenty farmers were interviewed in Chepareria Division, using semi-structured interviews to investigate if the use of enclosures have had any effect on animal husbandry in West Pokot and if so, how have this method affected the animal husbandry? The results of the study indicated that there is a difference in animal husbandry between farms using enclosures and farms not using enclosures.

Agil Systemutveckling : En studie av kravhantering och beställarroll i agila angreppsätt

This paper is a degree project on the C-level, 15 points at University West, Department of Business and IT dept. Informatics. This study is about agile methodology and its impact on IT projects. Requirements management is a process within an IT project, where customer has certain requirements that must be met by an IT system. The difference between the traditional and agile development is in the requirements management process and it can cause problems in a project.

??Auktorisation och ackreditering inom Försvarsmakten : En studie i nyttan av en standardiserad process för att hantera informationssäkerhet

???Information Technology is an essential part of the society today, not least in large ???organisations dealing with sensitive information. An example of such an organisation is the Swedish Armed Forces which indeed is in the need of ways to ensure information security in their Information Technology systems. The means which is used is an authorisation and accreditation process.All Information Technology systems go through a life cycle which includes realisation, usage, development and liquidation. In the Swedish Armed Forces the lifecycle is an authorisation process.

Det är lite gambling, man kan aldrig veta hur det blir i slutändan : Socialsekreterares erfarenhet av bedömning av en viss insats för barn och ungdomar

Social workers in this study describes various experiences of the assessments of interventions for children and adolescents. Social workers experience of the many different situations where an assessment of best effort must be made on the basis of BBIC, which is the Social Services investigation records. To make this assessment, the Social workers need social assistance and support of their colleagues and manager. Knowledge mixed with experience is also an important part when it comes to being professional and not let emotions control that could otherwise be happened when the social worker meets and builds relationships with clients. Social workers are also those who will decide which achievement the client needs from the needs.

Förhållandet mellan tandfärg och hur människors karaktärsdrag uppfattas. En studie utifrån tolkningar hos tandläkarstudenter från Sverige och Sri Lanka.

Inledning: Att skönhet och attraktivitet ger fördelar i livet har bekräftats i många studier. Tänderna är en bidragande faktor till hur människor bedömer varandra. Vita tänder föredras i många fall och missfärgade tänder är minst önskvärt. En studie visar att endast skillnader i tändernas utseende kan påverka hur vi uppfattar en annan människa och vackrare tänder kan få en person att uppfattas som mer intelligent och mer framgångsrik. Syfte: Syftet med studien var att undersöka om det finns någon skillnad i bedömningen av personlighetsdrag utifrån ett blekt, ett missfärgat och ett omanipulerat bett, samt jämföra resultatet mellan hur tandläkarstudenter i Sverige och Sri Lanka bedömer detta. Material och metod: Ett fotografi på en man och en kvinna manipulerades till tre olika utseenden: Blekt, omanipulerat och missfärgat. En enkät för att mäta karaktärsdrag utformades.

Förskolegården : Ur pedagogers perspektiv

Förskolegården är ett aktuellt och intressant område inför vår kommande roll som förskollärare. Gården är en plats där vi kommer tillbringa stor del av vår framtid och därför vill vi få mer kunskap om detta ur pedagogers perspektiv.  Det vi fokuserat på är pedagogers uppfattningar och åsikter om förskolegården och detta kan vi koppla till begreppen intelligent action och learning by doing som är Deweys teorier. Dessa teorier handlar främst om upplevelser och erfarenheter vilket vi grundar vår studie på eftersom vi anser att man utvecklas hela livet och att det därför är viktigt att få vara med om olika händelser.    Genom att vi kopplar vår studie till upplevelser och erfarenheter intar vi ett sociokulturellt perspektiv som fokuserar på intresset för det individuella barnet och barnet i grupp.    Syftet med denna studie är att undersöka några förskolepedagogers uppfattningar beträffande utemiljön på gården samt observera vad det finns för material och vad som används av barnen. Frågeställningarna vi använt oss av är: Vad anser den intervjuade pedagogen om miljön på gården i dag? Vad är pedagogernas åsikter kring upplägget av gården? Vad för material finns på gården och vad används?    Metoderna vi använt oss av är intervju och observation på tre olika förskolor i mellansverige där vi intervjuat sex pedagoger och observerat på sex förskolegårdar.    Resultatet av intervjuerna och observationerna visar att i de flesta fall var pedagogerna nöjda med gårdarna eftersom att det ansågs finnas det mesta, exempelvis närheten till naturen där utbudet skiftar beroende på årstid och detta ger barnen möjlighet till olika upplevelser.

Miljöbyggnad, GULD värt? : En undersökning av fastighetsägares erfarenheter och tankar kring ett nytt certifieringssystem

During the past few years an increased attention has been paid to environmental issues in the construction and property sector in Sweden. In order to simplify the work with these issues a Swedish environmental certification system for buildings called Miljöbyggnad has been developed. This thesis aims to investigate the opinion of a selected number of selected property owners of Miljöbyggnad. From that basis recommendations and actions for the future work with the system will be presented.The investigation has been conducted through personal interviews with five property owners. The main issues that the interviews have been based on are their purpose, experiences, perceived complications and future prospects in terms of certification using Miljöbyggnad.The system intends to be cost-effective, simple and to offer a relevant environmental assessment of buildings and the result from the report indicates that this is largely fulfilled.

Kapitalbudgetering och ekonomisk styrning : En fallstudie av svenska skogsindustrin

Bakgrund: Investeringsbeslut är ett av de viktigaste besluten som tas av chefer i företag. Besluten grundar sig på investeringskalkyler, som ryms inom begreppet kapitalbudgetering. I företagsekonomisk litteratur beskrivs sällan samband mellan kapitalbudgetering och annan ekonomisk styrning, vilket innebär att det finns ett tomrum inom forskningsområdet. Syfte: Syftet med uppsatsen är att beskriva hur företag inom den svenska skogsindustrin utformar och använder kapitalbudgetar som beslutsunderlag samt utreda och förklara sambandet mellan kapitalbudgetering och annan ekonomisk styrning. Metod: I studien har kvalitativ metod och fallstudier använts.

Uthållig sanitet : en förstudie i staden Picota, Peru

The access to good sanitary facilities is an important factor that elevates the experienced living standard as it improves hygiene and reduces the transmission of deseases. The ratification of the millennium goals by 189 countries demonstrates that this is an important international issue. Together the countries have taken upon themselves that the proportion of the population that lacked access to sustainable safe drinking water and sanitary facilities in the year 2000 will have been reduced by half by the year 2015. In Peru, the construction of sewage pipe networks to transport the sewage out of the direct human environment is progressing. The safety and sustainability of these systems can be questioned, since in Peru the sewage seldom receive any treatment before being emitted to a recipient. This is taking place in Picota and sorrunding villages as well. In the last 25 years several systems implementing small-scale onsite treatment have been introduced throughout Latin America in an attempt to give more people access to sustainable and safe sanitary facilities, reducing water consumption and taking advantage of the agricultural values of the sewage fractions while protecting the environment from its negative impact. In this study three different sanitary systems and the effects of different population growths were compared.

Lärares syn på hur den fysiska klassrumsmiljön påverkar elevernas lärande

My main purpose for this paper was to find out what the four teachers I interviewed thought about the design of their classroom and how they linked that to pedagogy, pupils learning and policy documents. I also wanted to find out if classroom design were something they discuss and reflects on in the college.My questions for this study were: What do some teachers who work in the early ages in the school think about the classroom design? Do these teachers link the classroom design to policy documents or pedagogy? Do these teachers consider classroom design to be something that should be discussed in the same way as other factors (for example teaching aids, resources etc.) within the college?My method was to make qualitative interviews with four teachers, analyze their answers and link them to my main theories and research in the area of the study. My main theories were multimodal communication, which means that there are several systems of signs in communication, which all have an essential function for the meaning of the communicated. It also means that learning happens both individually and socially and that school is a social construction, and that the system of opportunities and boundaries in which it takes form is mediated within our multimodal systems.

Skyltsystem till källsorteringsmodul

Målsättningen för projektet var att ta fram en miljövänlig, innovativ lösning på ett skyltsystem för källsorteringsstationer i kontorsmiljö åt Eko Systems AB. Skyltlösningen som idag används på producenten Eko Systems sorteringsmoduler fungerar väl hos användarna men både inköpare och producent ser brister i bl.a. lagerhållning, miljöanpassning, användarvänlighet och kundanpassning, samt i hanteringen av den mängd olika skyltar som producenten måste tillhandahålla. Arbetet resulterade i att ett nytt helhetskoncept för en skylt med utbytbar information togs fram. Konceptet uppfyller producentens höga krav på att vara miljövänlig och nytänkande, med en attraktiv design anpassad till företagets nuvarande produkter.

Hälsoeffekter från trafikbuller vid Bäckegatan

The purpose of the study is to investigate the possible effects of an unstable ventilation system and its influence on energy use and thermal comfort. The report also explores how qualified personal working with HVAC view and handles system control.In order to meet the requirements in energy efficiency and a comfortable indoor climate control regulation is a prerequisite. With optimized increased complexity of the climate systems, it becomes more challenging to control the system and the risk of unstable control increases. No previous studies about what affect an unstable system can have on energy use and thermal comfort have been found.The report is based on several tests were the controlling variable has been increased until the system becomes unstable. Two different types of unstable systems have been investigated.

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