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Complex systems can be described by coupling several standalone ODE problems that communicate with input and output signals. The need for simulating such systems has increased in recent years. A major issue when simulating coupled ODE systems has been to communicate coupling relations properly throughout integration and how to handle discontinuities. In this paper a concept that aggregates several
Error control coding is an essential part of any well-designed digital communication system. It has been used in structures to protect the information, by enabling reliable delivery of digital data over unreliable communication channels. Even though this is an old topic, enlisted by Shannon in the late 40's, a lot of research is still going on. There have been recently some interesting approac
The purposes of this master thesis are the simulation of the aerator air flow driven by the spillway water flow in the Bergeforsen dam and the behavior of the flow in the stilling basin. Aerators are employed to supply air at critical locations in the flow where low pressure and cavitation may occur in order to protect the structure. The simulations were carried out, first in 2D and then in 3D, wi
En borrkärna från Anholt (Kattegatt) togs upp under IODP-expedition 347 i Östersjön. Kärnan är daterad till ~18-14 ka BP och representerar deglaciationen i slutet av Weichselistiden. Bentiska foraminiferer av arten Elphidium excavatum clavatum analyserades för stabila isotoper (δ18O och δ13C) för att rekonstruera region-ens paleoklimat och paleoceanografi, såsom salinitet, ventilation och produktiThis thesis is based on a sediment record collected from the Kattegat Sea, southwestern Scandinavia (Anholt Island area) during IODP Expedition 347 in autumn 2013, and focuses on a portion of this record spanning ~18—14 thousand years ago (ka BP), representing the last deglaciation at the end of the Weichselian. Benthic foraminifera of the species Elphidium excavatum clavatum were analysed for sta
Title: Knowledge acquisition for a new business model creation and enabling factors Date of the seminar: 28-05-2015 Course: Master Corporate Entrepreneurship and Innovation Internship and Degree Project (Master Thesis 15 ECTS) Authors: Dovilė Gedvilaitė and Shubhabrata Paul Supervisor: Dr. Joakim Winborg Keywords: business model innovation, change, creation, knowledge, knowledge acquisition
The awareness of problems concerning arsenic contaminated drinking water sources has during recent years increased. WHO (World Health Organization) decided in 1993 to lower the recommended limit of arsenic in drinking water from 50 μg/l to 10 μg/l, mainly due to observations of its carcinogenicity. New places where the WHO limit for arsenic is exceeded are constantly discovered all over the world.
The awareness of problems concerning arsenic contaminated drinking water sources has during recent years increased. WHO (World Health Organization) decided in 1993 to lower the recommended limit of arsenic in drinking water from 50 μg/l to 10 μg/l, mainly due to observations of its carcinogenicity. New places where the WHO limit for arsenic is exceeded are constantly discovered all over the world.
The majority of the current 3GPP and M2M networks use or will use IPv6 for accessing the internet. These IPv6 networks use Neighbor Discovery as defined in RFC 4861 to identify their neighbors on the link and see if they are active. The increase in the complexity of wireless networks and introduction of battery operated devices sets forth notable challenges to certain assumptions in the RFC 4861.
This research supports the hypothesis that consultation, team work and congruence is a strategy to reduce risk, and that effective consultation reduces the potential for outrage when things do not go to plan. The research sought the opinion of managers on these matters, and if they were aware of own-biases that undermine the effectiveness in which they engage, and of antidotes to such “hazardous t
There are various ways in which Enterprise Architecture (EA) is defined these days. One of the more common definitions is that EA is a dashboard that allows business architects and other stakeholders to govern an enterprise’s transformation process. This dashboard shows current operations as well as its future and desired state. In theory this might seem as a good tool for enterprise architects bu
Recently a new way of constructing variable step-size multistep methods has been proposed, that parametrizes the entire domain of multistep methods. In the presented work the case of explicit two-step methods is looked at, analyzed and related to the already known theory of multistep methods. The error coefficient is derived as a function of the step-size ratio and an upper limit to the method dom
Product Service Systems offer companies the possibility to reduce environmental impacts by diminishing resource consumption, raw material extraction and waste generation. The concept focuses on a system of products, services and supporting networks with the aim of transitioning from selling the benefits of a product rather than the actual product. Naturally, incentives are created for companies to
Hamilton City is currently the fourth most populous territorial authority in New Zealand. The city boundary was extended in 1989 in order to provide sufficient land for urban growth for at least 25 years. Despite being neither unplanned nor unchecked, urban growth within this boundary has been branded by the media as urban sprawl. Urban sprawl is a complex phenomenon with a wide range of definit
Sand dune habitats are threatened by overgrowth and extended growth and plantations of woody species such as pines and Japanese rose (Rosa rugosa). The aim of this study is to investigate what types of dune habitats that are found within the Natura 2000 sites, the differences in vegetation between open sand and overgrown sand areas and the vegetation and soil pH in open and closed habitats in thre
Accurate wireless channel models are crucial to simulate the effect of radio wave propagation in a channel on wireless communication systems. By calculating physical processing effects that signal undergoes while traveling from transmitter to the receiver, channel models help to analyze performance of wireless systems. State of the art channel model such as WINNER and COST 2100 are able to model t
WTO is an increasingly influential international organization, which aims to liberalize global commercial activities and TRIPS is an important part of WTO agenda, which provides minimum standards for IPR regulation for all the members. Empirical evidence suggests that stronger IPR regimes contribute to increasing inward FDI, R&D investment and innovations. Starting out from these findings the
Problemställning: Cementproduktionen står idag för ca 5% av världens koldioxidutsläpp, vilket har stor negativ påverkan på klimatet. För att minska utsläppen behöver cementanvändningen reduceras genom t.ex. ersätta cement med andra material, såsom flygaska, mald granulerad masugnsslagg och kalcinerad lera. Syfte: Syftet är att undersöka den maximala vol.% cement som kan ersättas med flygaska, slaProblem: The production of cement stands today for approximately 5% of the world total emission of carbon dioxide, which has negative impact on the environment. In order to reduce the emission, the use of cement has to be reduced by e.g. replacing some of the cement with other materials. Purpose: The purpose is to find the maximum amount of fly ash, slag and calcined clay that can be used in conc
Under de senaste årtiondena har en ökning av psykosociala problem bland barn och ungdomar medfört att förebyggande och hälsofrämjande vård blivit det viktigaste inslaget i elevhälsan. Hälsosamtal är en del av skolsköterskans hälsofrämjande arbete. Syftet med studien var att beskriva hur skolsköterskan utifrån sina erfarenheter uppfattar hälsosamtal med elever i grundskolan. Semistrukturerade inter
Mobile applications are today an important way for companies to reach their customers. Developing a mobile application could require a lot of resources, especially if the application is to be made from scratch. However, an alternative for a company with an existing web application, is making use of the logic in the existing web application, to create a hybrid mobile application. In this thesis, tw
