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  • 51. Albeverioa, S.
    et al.
    Khrennikov, Andrei
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Shelkovichg,, V.M.
    The Cauchy problems for evolutionary pseudo-differential equations over p-adic field and the wavelet theory2011In: Journal of Mathematical Analysis and Applications, ISSN 0022-247X, E-ISSN 1096-0813, Vol. 375, no 1, p. 82-98Article in journal (Refereed)
  • 52.
    Albinsson, Ellen
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Hållbar utveckling - ekologisk bebyggelse2010Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [sv]

    Ett miljötänkande har uppkommit under de senaste decennierna, detta har gjort att byar med mål att vara helt ekologiska har arbetats fram, ekobyar. Efter teori- och empiristudier i ämnena ekologiskt byggande, och ekobyar har en specifik ekoby, föreslagits. Studierna har skett i en begränsad del av ekologiskt byggande, de delar som tas upp i examensarbetet Hållbar utveckling– ekologisk bebyggelse är, Kretslopp, Byggnadsmaterial, Platsens förutsättningar, Gemenskap, Förnybar värme respektive Mat och odling.

     

  • 53.
    Albrecht, Nina
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Olofsson, Erika
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Betydelsen av studentcentrerat lärande vid förmedling av professionsutbildning på distans2012In: NU2012 Gränslöst lärande, 2012Conference paper (Other (popular science, discussion, etc.))
  • 54.
    Alekic, Anis
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Carmvall, Andreas
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Displayintegrering2010Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This abstract describes the Bachelor of Science in engineering thesis for computer science at Linnaeus University. Arcoma AB in Växjö is a company that constructs and develops complete x-ray systems. The goal of the company is to improve the usability of the system with the help of a LED display. Arcoma can improve the system by exchange the unit that controls the x-ray generator with the LED display instead. This will give the user the ability to have better overview and control of the system, while treating the patient.

    This report describes the implementation of both the software and the hardware for the display, but also the technical background for some standards like HDMI and the LED technologic. The software has been tested directly to the display, and therefore made the testing interesting. We have used the Arcoma system and the development tools to solve the problem. The programming language that was used to solve the problem was mainly C++.

    The result was a system that is build up by the Arcoma hardware platform, our surrounding electronics and the display where the last ones were built in a box. Aside the display a demo application was developed for controlling the generator. This applications is controlled by a USB mouse. Arcoma is pleased with the result of the main problem with the display, and they are also pleased with us solving the additional problems that existed. Arcoma wants to create a demand of this solution in their new products.

  • 55.
    Aleksakhin, Vladyslav
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Visualization of gene ontology and cluster analysis results2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of the thesis is to develop a new visualization method for Gene Ontologiesand hierarchical clustering. These are both important tools in biology andmedicine to study high-throughput data such as transcriptomics and metabolomicsdata. Enrichment of ontology terms in the data is used to identify statistically overrepresentedontology terms, that give insight into relevant biological processes orfunctional modules. Hierarchical clustering is a standard method to analyze andvisualize data to nd relatively homogeneous clusters of experimental data points.Both methods support the analysis of the same data set, but are usually consideredindependently. However, often a combined view such as: visualizing a large data setin the context of an ontology under consideration of a clustering of the data.The result of the current work is a user-friendly program that combines twodi erent views for analysing Gene Ontology and Cluster simultaneously. To makeexplorations of such a big data possible we developed new visualization approach.

  • 56.
    Alfengård, Kristina
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Om informationslogistik är svaret. Vad är frågan?2010Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study is to identify information logistical problems and needs in work of change. This within the following work of change areas, strategy, organization and IT. And thereby show what kind of problem and needs information logistics can solve. The reason of choosing these work of change areas is because that information logistics is a multidisciplinary subject. That include informatics, logistics and economy/management.

    The research within information logistics show how IT can be used for a user – demand information supply. In summary the research area expresses how information can be stored in data warehouse and can be processed with business intelligence. The underlying approach of how different IT solutions can give the right information to the right person at the right time is logistics. The research area show different perspectives of information logistic and what the word refer to. The question is of there is any relevance and use for organizations to handle information logistic.

    The method of this study is based on Grounded Theory. Whose purpose is to let the collected empirics navigate the studies theoretical framework of references. Which in the context are most suitable. The approach of this study is hermeneutic with a qualitative method. The empirical groundwork has been collected through telephone interviews with special advisers such as consultants. Within scope of consulting services as strategy, organization and IT.  Through the analysis it has been identified that it within a work of change exist three types of information flows.

    • Structured information flow.
    • Restructured information flow.
    • Unstructured information flow.

    Besides above information flow it has also been identified situations where the information is dynamic respective stable. The analysis has therefore made a difference between the flow of information and the information as such. The following terms will show problems that are regarded as information logistics

    • Develop business plan.
    • The information is seperated from the users demand.
    • Cannot reach out with the information that is on paper.
    • Management wants information in one way and the co-worker on another.
    • Consultants take over information management.
    • Organization of process and people
    • The information is kept separated and affect process execution.

     

  • 57.
    Alfredsson, Emma
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    The Manufacture of a Vegetarian Smoothie2010Independent thesis Advanced level (degree of Master (One Year)), 30 credits / 45 HE creditsStudent thesis
  • 58.
    Al-Hadad, Mohamed
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Metodjämförelse mellan IMMAGE 800 och BN ProSpec för U-albumin, U-IgG, U-kappa och U-lambda2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Njurarna är ett organsystem med viktiga funktioner som exempelvis utsöndring av flertalet vattenlösliga substanser. För att sjukdomssymtom ska uppträda krävs mer än tre fjärdedelars bortfall av njurfunktionen, eftersom njurarna har en enorm reservkapacitet. Genom att analysera bland annat proteinerna albumin, immunoglobulin G, kappa och lambda i urin utreds om njurfunktionen fungerar som den ska. Analys av dessa proteiner kan ske med analysinstrumenten IMMAGE 800 från Beckman Coulter och BN ProSpec från DADE BEHRING. Båda dessa analysinstrument använder sig av metoden nefelometri, som är en metod där ljusspridning i en vätska eller gas kan mätas.

    Syftet med föreliggande studie var att analysera urinprover på både IMMAGE 800 och BN ProSpec och sedan jämföra resultaten. Under denna studie kalibrerades standardkurvor, genomfördes kvalitetskontroller och 37 prov analyserades. Samma prov analyserades flera gånger, både under samma dag och vid ett antal kommande dagar för att erhålla precisionen. Korrelationskoefficienten blev 0,999 för U-albumin; 0,998 för U-IgG; 0,947 för U-kappa och 0,883 för U-lambda. ProSpec kan således användas vid analys av U-albumin, U-IgG, U-kappa och U-lambda då den uppfyller EQUALIS kvalitetsmål.

  • 59.
    Al-Humadi, Rasha (current name Lisa Edisen)
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    3D Virtual Shopping Mall: Towards Transformation of levels from 2D to 3D2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This research examines the effects of using 3D virtual shopping malls and shows the user interaction and experience in this type of virtual environments. Technology developments and the use of the Internet made users to expect more services, which help to improve the user's life. Using a 3D virtual environment and adding a shopping idea to it is considered as very interesting, especially if it reflects the real world in a virtual reality that make its users attached to it. Furthermore, the possibility of having an avatar to represent themselves in computer-mediated virtual environment help users to explore the virtual environment. Another advantage is that users have the possibility to invite friends and to navigate inside a 3D Virtual-shopping mall not alone but together, which gives the user the capability to socialise inside the mall. Besides, changing of the customer's profile and chatting with friends is supported, too. Moreover, the transformation process from a two-dimensional environment to a three-dimensional environment is considered to be convenient for both, customers and mall owners.

     

    I have used phenomenology to investigate this new phenomenon. In addition the data was gathered by interviewing several participants from different educational levels as well as business owners of 3D virtual malls. The research will show the potential of using a 3D virtual shopping mall from the user's perspective as well as from the business' owners and having a 3D virtual shopping mall is not only considered entertaining, but also convenient.

     

    As a future work I recommend to interview the merchants in this research to grasp this idea completely.

  • 60.
    Ali, Dholfoqar
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Vilken effekt har statiner vid primär- och sekundärprevention av hjärt- och kärlsjukdomar?2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Lipid-lowering drugs, mostly statines, were dispensed during 2011 to 815 000 people from the pharmacies in Sweden. High cholesterol is a major risk factor for development of coronary heart disease (myocardial infarction, angina, intermittent claudicatio intermittens and stroke). Coronary heart disease is the causes of more than 40% of all deaths in Sweden.Lifestyle changes, together with lipid-lowering drugs, statines, are effective treatments. Statines can be administered either to patients that have had a cardiac event i.e. heart attack, stroke (secondary care) or to persons with risk factors i.e. high levels of cholesterol, diabetes, primary care.

    Objective: with the help of published clinical trials and meta-analysis examine what effect statines have on morbidity / mortality in cardiovascular diseases in primary and secondary care.

    Results: The studies showed that statins reduce TC, LDL and TG and increase HDL. They also showed that statins reduce major coronary events, cerebrovascular events, mortality from coronary heart disease, unstable angina and revascularization. Statin therapy was associated with increased risk of moderate or severe liver failure, acute renal failure, moderate or severe myopathy and cataracts in both men and women. The risk was dose-dependent and greatest at the first year of treatment.

    Conclusion: The studies showed that statine treatment reduced the blood level of harmful cholesterol, prevented the atherosclerotic process and thus reduced the need for revascularization. Statin therapy is about two - three times as effective in secondary care as in primary care. One need to treat 60 people, who have had a coronary heart event, during about 5 years to prevent one death and 180 people to prevent a nonfatal cardiovascular event. The effect is similar for men and women and for older and middle aged people. Life expectancy increases by two years. For patients who not have had a coronary heart event but have risk factors i.e. high cholesterol levels, diabetes, one need to treat two - three times as many to achieve the same results (120 patients to prevent one death and 330 to prevent one nonfatal cardiovascular event). The effects of treating healthy individuals with statines are low.Statines are well-established and safe drugs. One noteworthy side effect is myopathy, (rhablomyelos) which is quite unusual as reported from studies.One problem that exists in all prescribed preventive treatments is poor adherence to prescriptions.

  • 61.
    Ali, Sharafat
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Nitrogen in Materials2010Conference paper (Refereed)
  • 62.
    Ali, Sharafat
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Berastegui, Pedro
    Stockholm University.
    Esmaeilzadeh, Saeid
    Stockholm University.
    Eriksson, Lars
    Stockholm University.
    Jekabs, Grins
    Stockholm University.
    A cubic calcium oxynitrido-silicate, Ca2.89Si2N1.76O4.242011In: Acta Crystallographica Section E: Structure Reports Online, ISSN 1600-5368, E-ISSN 1600-5368, Vol. 67, article id i66Article in journal (Refereed)
    Abstract [en]

    The title compound, tricalcium oxynitride silicate, withcomposition Ca3-xSi2N2-2xO4+2x (x ’ 0.12), is a perovskiterelatedcalcium oxynitrido silicate containing isolated oxynitridosilicate 12-rings. The N atoms are statistically disorderedwith O atoms (occupancy ratio N:O = 0.88:0.12) and occupythe bridging positions in the 12 ring oxynitrido silicate anion,while the remaining O atoms are located at the terminalpositions of the Si(O,N)4 tetrahedra. The majority of the Ca2+cations fill the channels along [100] in the packing of the 12-ring anions. The rest of these cations are located at severalpositions, with partial occupancy, in channels along the bodydiagonals.

  • 63.
    Ali, Sharafat
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Grins, J.
    Stockholm University.
    Jonson, Bo
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Raman spectra of Ca-Si-O-N glasses2012Conference paper (Refereed)
  • 64.
    Ali, Sharafat
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Jonson, Bo
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Compositional effects on the properties of high nitrogen content alkaline-earth silicon oxynitride glasses, AE = Mg, Ca, Sr, Ba2011In: Journal of the European Ceramic Society, ISSN 0955-2219, E-ISSN 1873-619X, Vol. 31, no 4, p. 611-618Article in journal (Refereed)
    Abstract [en]

    A series of alkaline-earth element containing high nitrogen content oxynitride glasses (AESiON), with AE = Mg, Ca, Sr, Ba, were prepared in order to investigate the compositional effects on the physical properties of the alkaline-earth element. The physical properties were found to change linearly with the concentration of AE elements. The density of the glasses increases substantially with an increase in the AE atomic mass and slightly with an increase in nitrogen ratio. Ba containing glasses shows the value of density 4.16 g/cm3. Glass transition temperatures are found to be higher for Mg glasses, ca. 1020 °C, in comparison with Ba glasses, ca. 895 °C. The hardness of Mg containing glasses shows high values, up to 12.2 GPa and decreases for Ca, Sr and Ba containing glasses. Ba, containing glasses shows high values of refractive index in comparison with the Sr, Ca and Mg containing glasses.

  • 65.
    Ali, Sharafat
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Jonson, Bo
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Formation of oxynitride glasses from fly ashes2010In: Abstracts - 10th ESG conference together with 84th annual meeting of the DGG : Glass Trend Seminar "Glass Furnaces and Refractory Materials": Plansee Session "Refractory Methals for the Glass Industry ; Magdeburg, Germany, 30 May - 2 June 2010, 2010, p. 89-Conference paper (Refereed)
  • 66.
    Ali, Sharafat
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Jonson, Bo
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Glasses in the Ba–Si–O–N System2011In: Journal of The American Ceramic Society, ISSN 0002-7820, E-ISSN 1551-2916, Vol. 94, no 9, p. 2912-2917Article in journal (Refereed)
    Abstract [en]

    The preparation and properties of Ba–Si–O–N glasses arereported. These oxynitride glasses were prepared by meltingmixtures of BaH2, SiO2, and Si3N4 powders in a nitrogenatmosphere at 1550°–1700°C. The glasses were characterized by X-ray powder diffraction, differential thermal analysis, and scanning electron microscopy. Final glass compositions were calculated from analyses obtained by energy dispersive X-ray(EDX) spectroscopy and combustion analysis, for cation and anion compositions, respectively. The glasses were found to behomogenous, translucent gray to opaque black, and consists of N contents of up to 42 equiv% and Ba contents of up to 36 equiv%. Determined glass densities varied between 3.27 and 4.18 g/cm3, and calculated molar volumes varied between1 0.28 and 11.11 cm3/mol. Both density and molar volume increase with Ba content. Glass compactness (0.45–0.49), glasstransition temperature (786°–905°C), and microhardness (7.93–9.56 GPa) were found to increase linearly with N content. There fractive index increased from 1.66 to 1.91 and was found tobe strongly correlated with the amounts of Ba and N.

  • 67.
    Ali, Sharafat
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Jonson, Bo
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Oxidation behavior of nitrogen rich AE-Si-O-N glasses (AE = Ca, Sr, Ba)2011In: Journal of the Australian Ceramic Society, ISSN 0004-881X, Vol. 47, no 2, p. 8-12Article in journal (Refereed)
    Abstract [en]

    AE-based silicon oxynitride glasses (AE = Ca, Sr, Ba) with high nitrogen content have been synthesized using AE hydrides as primary precursors. The oxidation behavior of AE-Si-O-N glasses in ordinary atmosphere at different temperature has been investigated. These glasses react with air oxygen when heated just above the glass transition temperatures. The oxidation starts with bubble formation on the surface and continued oxidation leads to formation of a white layer on the surface. The oxidation of AE-Si-O-N glasses involves concurrently ongoing inward diffusion of oxygen and outward diffusion of AE elements and nitrogen, resulting in compositional gradient. EDX analysis showed substantial enrichment in AE content at the surfaces of the oxidized layer.

  • 68.
    Ali, Sharafat
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Jonson, Bo
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Oxynitride glasses2012Conference paper (Refereed)
  • 69.
    Ali, Sharafat
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Jonson, Bo
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Preparation and properties of high nitrogen content mixed alkaline-earth oxynitride glasses2011Conference paper (Refereed)
  • 70.
    Ali, Sharafat
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Jonson, Bo
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Preparation of oxynitride glasses from woody biofuel ashes.2010In: Journal of Non-Crystalline Solids, ISSN 0022-3093, E-ISSN 1873-4812, Vol. 356, no 50-51, p. 2774-2777Article in journal (Refereed)
    Abstract [en]

    Oxynitride glasses have been prepared by melting woody biofuel ash from a power plant in south Sweden with addition of calcium metal as an extra modifier in a nitrogen atmosphere at 1350–1500 °C. The glasses were characterized by X-ray powder diffraction, differential thermal analysis and scanning electron microscopy. Cation and anion glass compositions were determined by energy dispersive X-ray analysis and combustion analysis, respectively. The glasses were found to be homogenous, translucent gray to black, and to contain up to 23 e/o of calcium and 5 e/o of nitrogen. The glass formation depends on the ratio of calcium metal introduction to the ash precursors. A strong exothermic reaction was observed at 650–850 °C, leading to the formation of amorphous and crystalline oxynitride phases that melt at high temperatures upon further heating. The glass densities vary between 2.76 g/cm3 and 2.92 g/cm3. The glass transition temperature was found to vary from 670 °C to 749 °C and increase linearly with the nitrogen content.

  • 71.
    Alissandrakis, Aris
    et al.
    Dept. of Comput. Intell. & Syst. Sci., Tokyo Inst. of Technol., Tokyo, Japan.
    Otero, Nuno
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Saunders, Joe
    Adaptive Systems Research Group, University of Hertfordshire, Hatfield, UK.
    Dautenhahn, Kerstin
    Adaptive Systems Research Group, University of Hertfordshire, Hatfield, UK.
    Nehaniv, Chrystopher
    Adaptive Systems Research Group, University of Hertfordshire, Hatfield, UK.
    Helping Robots Imitate: Metrics And Computational Solutions Inspired By Human-Robot Interaction Studies2010In: Advances in Cognitive Systems / [ed] Samia Nefti-Meziani and John Gray, Institution of Engineering and Technology, 2010, p. 127-167Chapter in book (Refereed)
    Abstract [en]

    In this chapter we describe three lines of research related to the issue of helping robots imitate people. These studies are based on observed human be- haviour, technical metrics and implemented technical solutions. The three lines of research are: (a) a number of user studies that show how humans naturally tend to demonstrate a task for a robot to learn, (b) a formal approach to tackle the problem of what a robot should imitate, and (c) a technology-driven conceptual framework and technique, inspired by social learning theories, that addresses how a robot can be taught. In this merging exercise we will try to propose a way through this prob- lem space, towards the design of a Human-Robot Interaction (HRI) system able to be taught by humans via demonstration.

  • 72.
    Aliti, Admirim
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Akkaya, Deniz
    Linnaeus University, Faculty of Science and Engineering, School of Computer Science, Physics and Mathematics.
    Employees' Role in Improving Information Systems Security2011Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Information security is one of the most essential concerns in today’s organizations. IT departments in larger organizations are tasked to implement security, by both ensuring to have pertinent hardware and software, and likewise enlighten, teach and educate organization’s employees about security issues. The aim of this research is to focus on the human factor of the organization, which impacts the security of the information, since technological solutions of technical problems become incomprehensible without human recognition about security. If the security is not addressed in firms, this might lead to essential data of the organization to be compromised. This study explores ways to enhance information security and improve the human factor by integrating the crucial information security elements in organizations. Social constructivist worldview is adopted throughout the study, and an inductive based - qualitative approach, a single case study design and hermeneutical analysis for analyzing the observations and interviews are utilized. The research setting for this study is Växjö Municipality in Sweden. The empirical investigation suggests that human factor plays an essential role in maintaining information security, and organizations can improve employees’ role by keeping their security policies up to date and find the best ways to disseminate that information. As a result, this research comes up with “information security human management model” for organizations.

  • 73.
    Aljija, Elnes
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Jämförelse Mellan Lätt och Tung Stomme på ett Kontorshus2012Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    At the beginning of each new project comes across on the different options of frame and floor construction available to choose from, and the question is often which option that is optimal for the current project. The optimal solution for each project does not exist, because of the different factors and conditions that govern the project, such as: economy, building type, terrain type, etc.

    The issue addressed in this report is on glue-laminated wood or concrete is the most ideal alternative to framing materials in the current project.

    Comparative work on the basis of preconditions has been made by dimensioning the parts of a project with both materials. The focus was on differences in building height, wind stability and the foundation.

    The results indicate if you're going to build an office building or apartment building,concrete is more appropriate alternative compared to the glue-laminated wood.

    The difference in building height is surprisingly not so great between the two different frames. However, the difference varies considerably in terms of floor height between glue-laminated wood and concrete. This is due to requirements for deflection and springines imposed on wood.

    Both frames can handle wind stability without plinths, which is quite interesting especially in view of the wood's light weight.

    Regarding the foundation, the difference was significantly greater between glue-laminated wood and concrete.

    The design according to Eurocodes has been made by hand calculations and also the use of the software Strusofts.

  • 74.
    Alldén, Sofie
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Utvärdering av näringsstatus inför återskapande av kalkkärr vid Hagebyhöga, Östergötland2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Calcareous fens constitute a specific habitat which is uncommon in Europe and protected by the EU habitat directive due to its importance to several threatened species. Hagebyhöga in Östergötland is a calcareous fen habitat included in the Natura 2000 Networking Programme. Adjacent to the existing fen, a degraded fen area is situated. The area has been used for agriculture for several years but is now going to be restored to its former state by the county administrative board of Östergötland.

    When working with restoration of degraded fen areas it is important to aquire knowledge about the chemical soil conditions. Plant growth limited by phosphorus and low fertility are characteristic conditions for calcareous fens, whilst arable land usually is highly fertile and limited by nitrogen.

    The purpose of this study is to bring forth useful knowledge for restoring the degraded calcareous fen of Hagebyhöga. Phytometric assessments have been conducted on samples from the ground that is going to be restored, to investigate which element limits growth, and whether the fertility is comparable to that in the fen allready present. The results will be used when deciding whether the top soil layer needs to be removed, and if that is the case, how much of the soil needs to be removed to recreate the fen environment.

    The samples were collected from two areas (A and B) with different moisture content in the arable ground and three depths from each area (0-10 cm, 10-30 cm and 30-40 cm). As reference, a sample from the top soil layer of the existing fen was used. The results from the phytometric assessment reveals all samples from area A and the sample from area B, 30-40 cm to have plant growth limited by phosphorus. The results also reveals the fertility in all samples except for area A, 30-40 cm to be significantly higher than the fertility of the existing fen. Both conditions, low fertility and plant growth limited by phosphorus, are present in the sample from area A, 30-40 cm.

  • 75.
    Alm, Alexander
    Linnaeus University, Faculty of Science and Engineering, Kalmar Maritime Academy.
    Kolkraft med CSS2012Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
    Abstract [sv]

    ABSTRAKT

    Detta arbete om kolkraft med CCS syftar till att ge läsaren en lite djupare bild av hur avskiljning, transportering och lagring kan fungera vid ett koleldat kraftverk utrustat med koldioxidavskiljning.

    Vilka olika tekniska metoder som finns eller är under utveckling för de olika stegen i processen och hur dessa fungerar.

    Arbetet tar även upp historien bakom kolet som bränsle och hur utvecklingen av olika reningstekniker tog fart.

    Generella fördelar och nackdelar med CCS bollas fram o tillbaka miljömässiga aspekter med tekniken samt den ekonomiska lönsamheten undersöks.

    Arbetet avslutas med en överblick över en verklig pilotanläggning i Schwarzepumpe i Tyskland.

  • 76.
    Alm, Christoffer
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Mehari, Amanuel
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Utveckling av hanteringsmaskin för IKEA-påsar2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Det här examensarbete handlar om att ta fram en ny maskin, en hanteringsmaskin, till TEXO Application i Älmhult. Syftet med maskinen är att den ska vika IKEAs kundpåsar, hanteringsmaskinen ska användas på samtliga IKEA varuhus världen över. Utvecklingen av hanteringsmaskinen går från enkla skisser av flera koncept till val av koncept och utveckling en denna till en fullständig ritning som det sedan byggs en prototyp utfrån. Effektiviseringen bland samtliga varuhus beräknas att öka då denna lösning ger de anställda mer tid till annat arbete.

  • 77.
    Alm, Inger
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Yrkeskompetensbevis, YKB2010Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 78.
    Almkvist, Tomas
    et al.
    Linnaeus University, Faculty of Science and Engineering, Kalmar Maritime Academy.
    Gesslein, Bonnie
    Linnaeus University, Faculty of Science and Engineering, Kalmar Maritime Academy.
    Fripassagerare: Svenska rederiers förfarande2010Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
  • 79.
    Almqvist, Sara
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Apotekskunders upplevelser av att tabletterna smular vid delning och vad de gör med smulorna2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In Sweden, about 10 percent of the prescriptions have a dosage with split tablets. Many patients have problems with breaking tablets into two or more parts as the tablet may crumble or break into many small pieces. The aim with this work is to examine to which extent patients experience crumbled tablets when trying to split tablets and what the patient does with the crumbles.

    In order to examine patients experience with crumbled tablets, interviews with patients who collected a prescription with a dosage with divided tablets in one of twelve pharmacies, were done. Included patients had to be 18 years or older.

    Of the 416 included patients with experience of splitting tablets, 123 had problems with tablet splitting and out of these 29 found the issue with tablets crumbling to be a problem. Overall, 174 patients experienced crumbled tablets. Patients, who didn’t experience crumbled tablets, were less likely to split tablets with a tool than patients who did experience crumbled tablets. 93 of 380 patients collected crumbles equivalent to half a tablet and consumed the crumbles while 80 patients discarded the crumbles (threw them away).

    Many patients use the crumbles instead of throwing them away even though it is difficult to tell how much of the drug you obtain with the crumbles. It seems as if the way you choose to divide the tablet (with or with out a tool) is affecting whether you experience crumbling or not. Most people don’t experience crumbling and of those who do only one out of six considers it to be a problem. In Sweden in whole the interviews give a slight estimate for how many patients the problem is persistent. In rough numbers it is estimated that 37- 47.000 had experienced crumbled tablets whereas 4.500-10.500 found it be a problem.

  • 80.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    A graphical method to assess the probability of failure of a rolling element bearing and its residual life in paper mills when using a vibration monitoring system2000Conference paper (Refereed)
  • 81.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    A new vibration based approach for monitoring rolling element bearings1994Conference paper (Refereed)
  • 82.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    An approach for selection of the most cost-effective vibration replacement level1998Conference paper (Refereed)
  • 83.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Computerised Maintenance Decision Support System (MDSS) for Simulating and Selecting the most Cost-effective Production and Maintenance Solution: Case Study in FIAT/CRF, Italy2010In: Computerised Maintenance Decision Support System (MDSS) for Simulating and Selecting the most Cost-effective Production and Maintenance Solution: Case Study in FIAT/CRF, Italy / [ed] Susumu Okumura, Tadao Kawai, Peng Chen and Raj B.K. N. Rao, Hikone, Japan: Sunrise Publishing Limited , 2010, p. 8-Conference paper (Refereed)
    Abstract [en]

    To survive the hard international competition, it is necessary for many companies to enhance their competition positions through, for example; reducing production cost, and maintaining and improving production process and product quality for increasing the profit margin. In order to achieve these strategic goals, a tool for making investments in maintenance more profitable is developed, introduced, tested and discussed. This tool/module is one of the modules included by an innovatively new Maintenance Decision Support System (MDSS). Theoretical backgrounds are introduced, and software prototype (AltSim) for making the application of any of the tool on the daily basis easier and more cost-effective are developed, discussed and their functionalities are tested in FIAT/CRF, Italy. It is designed to support maintenance and production engineers to achieve cost-effective maintenance decisions. The major result of this study is development and testing of innovatively new tool/software module for simulating and selecting the most cost-effective production and maintenance solution. The major conclusion that can be drawn is; applying AltSim it is possible to identify and select the most cost-effective solution when there are several technically application solutions for the same problem.

  • 84.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Cost-effective continuous improvement when using total quality maintenance (TQMain)2003In: ICOMS-2003 : International Conference of Maintenance Societies, 2003Conference paper (Refereed)
  • 85.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Dymanite: ett beslutsstödsystem för effektivare underhållsåtgärder, del III2010In: Bättre produktivitet, ISSN 1402-1145, no 6, p. 24-25Article in journal (Other (popular science, discussion, etc.))
  • 86.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Dynamic e-Maintenance: Applying eMaintenance Decision Support System (eMDSS) in Case Companies2011In: 7th IMA International Conference on Modelling in Industrial Maintenance and Reliability: Sidney Susses College, University of Cambrige, UK, UK: Institute of Mathematics & its applications , 2011Conference paper (Refereed)
    Abstract [en]

    In order to maintain and improve company profitability especially during financial crises and lower profit-margin, it is necessary to reduce economic losses. This can be achieved through maintaining and improving the quality of the elements involved in the production process. Therefore, the maintenance strategy applied should be dynamic to suit the changes occur in a production process cost-effectively. Therefore, it is essential for maintenance and production managers to have a system providing the data required to achieve dynamic and cost-effective maintenance decisions. In this paper, a new Maintenance Decision Support System (eMDSS) for achieving dynamic and cost-effective maintenance decisions is introduced, tested and discussed. It consists of three toolsets and five software modules for performing six services to; enhance accuracy of maintenance decisions, select the most cost-effective maintenance solutions, identify and prioritise problem areas, and assess losses in production time, and map, follow up and assess maintenance cost-effectiveness (maintenance savings and profit) to achieve continuous & cost effective improvement. The major result of this tsudy is verfication of a new innovative Mainteance Decision Support System (eMDSS). The system has been tested at Fiat (car manufacturer)/CRF in Italy and GORATU (CNC-machine manufacturer).  The main conclusion is; applying eMDSS it is possible to map production and maintenance processes, identify and prioritise problems, select the most cost-effective maintenance investment and follow up and control investments results.

  • 87.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Dynamite: ett beslutsstödsystem för effektivare underhållsåtgärd, del II2010In: Bättre produktivitet, ISSN 1402-1145, no 3, p. 24-25Article in journal (Other (popular science, discussion, etc.))
  • 88.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Dynamite: ett beslutsstödsystem för effektivare underhållsåtgärder2009In: Bättre produktivitet, ISSN 1402-1145, no 7, p. 24-25Article in journal (Other (popular science, discussion, etc.))
  • 89.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Economic criteria to select a cost-effective maintenance policy1999In: Journal of Quality in Maintenance Engineering, ISSN 1355-2511, E-ISSN 1758-7832, Vol. 5, no 3, p. 236-248Article in journal (Refereed)
    Abstract [en]

    The reputation of an organisation is often built through hard work on improving quality, reliability, delivery time and price. In this paper a graphical method for the selection of a cost-effective monitoring technique is suggested. This graphical method is also used to select the most cost-effective replacement vibration level, when a vibration-based maintenance is implemented, i.e. when the available data are mainly condition-based replacement. This method is based on the concept of the Total Time on Test, TTT-plot. The use of this method is explained by three examples.

  • 90.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Economic importance of maintenance planning when using vibration-based maintenance policy2001Book (Other academic)
  • 91.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    eMaintenance Decision Support System: Case Studies for Securing Production Process & Following up Maintenance Contribution in Company Business2011In: COMADEM 2011 : proceedings of the 24th international congress on conditioning monitoring and diagnostics engineering management: advances in industial asset integrity management / [ed] Maneesh Singh, Raj B.K.N. Rao and J.P. Liyanage, India: PL, Kolkata , 2011, p. 395-406Conference paper (Refereed)
    Abstract [en]

    In general, all the elements involved in a production process, such as tools, machinery, methods, competence and working environment are exposed to dynamic changes. Thus, in order to maintain and improve company profitability and competitiveness especially during financial crises and lower profit-margin, it is necessary to reduce losses through maintaining and improving the quality of the elements involved in the production process. Therefore, the maintenance strategy applied should be dynamic to follow all these changes cost-effectively. The accuracy of maintenance decisions is essential for reducing economic losses generated due to unnecessary stoppages especially when stoppage time is very expensive. Therefore, it is necessary for maintenance and production managers to have a system providing the data required to achieve dynamic and cost-effective maintenance decisions. In this paper, the role of & importance of dynamic and cost effective maintenance in company business is discussed. Also, a scenario for applying a new eMaintenance Decision Support System (eMDSS) for achieving dynamic and cost-effective maintenance decisions is introduced, tested and discussed. eMDSS introduces four different strategies for continuously improving the cost-effectiveness of maintenance and production processes. It consists of three toolsets and five software modules for performing six services to;

    1. enhance accuracy of maintenance decisions

    2. select the most cost-effective maintenance solutions

    3. identify and prioritise problem areas, and assess losses in production time

    4. map, follow up and assess maintenance cost-effectiveness (maintenance savings and profit) for achieving continuous & cost effective improvement.

    The major result of this tsudy is a new innovative eMDSS. The system has been tested at Fiat (car manufacturer)/CRF inItalyand GORATU (CNC-machine manufacturer).  The main conclusion is; applying eMDSS it is possible to map production an maintenance processes, identify and prioritise investments results.

  • 92.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Ett beslutsstödsystem för kostnadseffektivare underhållsåtgärder2011Other (Other (popular science, discussion, etc.))
  • 93.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Improved effectiveness of vibration monitoring of rolling bearings in paper mills1998In: Journal of engineering tribology, Vol. 212, no 2, p. 111-120Article in journal (Refereed)
    Abstract [en]

    Rolling element bearing failures in paper mill machines are considered in relation to their critical role in the machine function. The paper discusses these failures according to what becomes damaged and how, and relates them to the vibration spectra and their development over the bearings’ lives. Interpretation of some variations in the vibration signature, i.e. relating vibration amplitude changes and frequency shifts to the deterioration processes involved, are proposed and discussed. The literature was found mainly to confirm this analysis. A new approach to envelope alarming is presented and shown theoretically (logically) to offer later renewal with fewer failures, and therefore lower cost and higher productivity. Deficiencies in data coverage and quality, and the feedback of case study results, are discussed. A model to improve maintenance experience is proposed and discussed. Using vibration to monitor component condition, the accurate prediction of remaining life requires (a) enough vibration measurements, (b) numerate records of operating conditions, (c) better discrimination between frequencies in the spectrum and (d) correlation of (b) and (c). This is because life prediction depends on the amplitudes of (and) the frequencies generated by the component damage. Much money could be saved because some present policies utilise as little as half of the bearing useful life.

  • 94.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Integrated vibration-based maintenance1999Conference paper (Refereed)
  • 95.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Integrated vibration-based maintenance detecting quality deviations earlier than when using traditional diagram in the automative industry: a case study2000In: Advanced manufacturing: modular manufacturing, supplier integration, production planning, 2000, p. 157-165Conference paper (Refereed)
  • 96.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Just in Time Dynamic & Cost-effective Maintenance (JiT dMaint) for more Reliable Production: A Case Study2012In: 21st European Congress on Maintenance and Asset Management, Belgrade, 2012, p. 277-286Conference paper (Refereed)
    Abstract [en]

    Using CM, we have past data for describing damage initiation & development and current data for describing the current condition of a component/machine.  Data describing possible behaviour of the condition in the close future are usually lack in the available commercial systems although it is important for planning production/maintenance actions, reducing failures/accidents, & consequently reducing losses & production cost. In general, accurate maintenance decisions prolong life length of components/machines and maintain production continuity which adds competitive advantages. When CM parameter exceeds a significant (warning) level, it demands a clear understanding of what happened to avoid failures. Also, reliable answers concerning; what is the probability of failure of a component, its residual life and when is the most profitable time of conducting maintenance are necessary. In this paper, a new innovative eMDSS consists of three strategies for cost-effective maintenance & production processes is introduced and discussed. The major focus is given on one strategy (Accurate Maintenance Decisions). This strategy offers opportunity to achieve Just on Time Dynamic & Cost-effective Maintenance by selecting the most profitable time for maintenance is developed, tested in case companies and discussed. It offers unique solutions to increase maintenance profitability by enhancing maintenance decision accuracy via;

    1. Predicting the value of CM parameter, e.g. vibration, level, PreVib.
    2. Estimating the probability of failure at the close future and component residual life, ProLife.
    3. Using this new information, it will easily estimate the most profitable time for maintenance action.

    Accurate Maintenance Decisions provides data about future situation in addition to the current & past data, which is necessary for production and maintenance successful planning. This toolset; predicts the vibration level (PreVib), assesses the probability of failure of equipment and its residual life (ProLife), and consequently it becomes possible to determine the best time of maintenance action. It has been tested in several Swedish and European companies within the branches of car manufacturing, production machine manufacturer and process industry.  This study was partly funded by EU-IP DYNAMITE (Dynamic Decisions in Maintenance ) 2005-2009 and partly by E-maintenance Sweden AB. The major conclusions are; applying this toolset it is possible to reduce failures appreciably, prolongs the life length of components/equipment, and perform profitable maintenance.

  • 97.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Just in Time Dynamic & Cost-effective Maintenance (JiT dMaint) for more Reliable Production: A Case Study2012In: Journal of Applied Engineering Science, ISSN 2247-3769, Vol. 10, no 2, p. 107-115Article in journal (Refereed)
    Abstract [en]

    Using CM, we have past data for describing damage initiation & development and current data for describing the current condition of a component/machine.  Data describing possible behaviour of the condition in the close future are usually lack in the available commercial systems although it is important for planning production/maintenance actions, reducing failures/accidents, & consequently reducing losses & production cost. In general, accurate maintenance decisions prolong life length of components/machines and maintain production continuity which adds competitive advantages. When CM parameter exceeds a significant (warning) level, it demands a clear understanding of what happened to avoid failures. Also, reliable answers concerning; what is the probability of failure of a component, its residual life and when is the most profitable time of conducting maintenance are necessary. In this paper, a new innovative eMDSS consists of three strategies for cost-effective maintenance & production processes is introduced and discussed. The major focus is given on one strategy (Accurate Maintenance Decisions). This strategy offers opportunity to achieve Just on Time Dynamic & Cost-effective Maintenance by selecting the most profitable time for maintenance is developed, tested in case companies and discussed. It offers unique solutions to increase maintenance profitability by enhancing maintenance decision accuracy via;

    1. Predicting the value of CM parameter, e.g. vibration, level, PreVib.
    2. Estimating the probability of failure at the close future and component residual life, ProLife.
    3. Using this new information, it will easily estimate the most profitable time for maintenance action.

    Accurate Maintenance Decisions provides data about future situation in addition to the current & past data, which is necessary for production and maintenance successful planning. This toolset; predicts the vibration level (PreVib), assesses the probability of failure of equipment and its residual life (ProLife), and consequently it becomes possible to determine the best time of maintenance action. It has been tested in several Swedish and European companies within the branches of car manufacturing, production machine manufacturer and process industry.  This study was partly funded by EU-IP DYNAMITE (Dynamic Decisions in Maintenance ) 2005-2009 and partly by E-maintenance Sweden AB. The major conclusions are; applying this toolset it is possible to reduce failures appreciably, prolongs the life length of components/equipment, and perform profitable maintenance.

  • 98.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Maintaining Asset Quality Cost-Effectively: Future Business Challenge2012In: Quality. Inovations.Future / [ed] Marko Ferjan, Mirjana Kljajic Borstnar,Miha Maric and Andreja Pucihar, Slovenia, Potoroz, 2012Conference paper (Other academic)
    Abstract [en]

    World-wide industrial experience shows that vibration is a powerful tool in detecting damage in mechanical systems which made it very widely used in rotating and reciprocating machines. Properly used vibration monitoring systems provide information illustrating what is on-going in the machine, i.e. if there is deterioration. Current and past data can also be used to identify what type of deterioration processes are active. But, sometimes the vibration signal analysis should be completed by additional CM parameter(s), such as SPM, oil analysis and temperature, to get more reliable detection of problems and prediction of future condition of production equipment.

    Making accurate and cost-effective maintenance decisions, i.e. to determine more accurately when and why to stop production equipment and where to conduct maintenance actions  depends on:

    1. availability of equipment history,
    2. possibility to assess current condition,
    3. accuracy of the CM system being used and
    4. the knowledge and experience in monitoring the condition of mechanical systems that is available.

    But, the data set which describes the condition of the equipment in the close future is usually missed. Therefore to avoid failures and conduct maintenance actions during planned stoppages, it is crucial to assess what the condition of production equipment will be at the next planned stoppage (close future), i.e. when the decisions of stopping production equipment for maintenance should be realised.

    The capital invested in production equipment is usually intended to produce a predetermined amount of production in a well-defined production time at a particular quality and production cost. But due to failures, reduced production speed and other unnecessary stoppages, the production process loses some of the time planned for production due to the downtime and failure related poor quality. Higher level of vibration, noise, heat generation and temperature can associate the deterioration phase preceding failures and result in higher energy consumption. The additional energy, i.e. waste in energy, is consumed due to, e.g. failures, reduced production speed, produced bad quality items and machine idle time. Thus, eliminating the root-causes behind these disturbances, the bleeding of waste in energy consumption can be reduced or terminated. Moreover, the pollution released to the environment is, in general, influenced by many factors, among others, energy production/consumption. Therefore,  reduced waste in energy consumption will reduce the amount of pollution released to the environment. It is notable that the reduction in downtime of production equipment and waste in energy consumption can both be assessed on the economic basis but of two dimensional effect; economic and environmental. Therefore, in order to decide whether the time is most profitable, technical and economic analysis is important for highlighting the economic losses due to failures, downtimes and unnecessary consumption of energy and consequently less pollution to the environment. It is also important to develop a model for determining when to plan maintenance actions to continuously increase company profitability. The economic impact of unnecessary downtime and consumption in energy can then be used to distinguish between failure modes, rank them and select the most profitable maintenance time. But, applying any model or system for conducting  profitable maintenance cannot be secured without reliable and easily used key performance indicators (KPIs) that can be used for mapping, analysis, evaluation and judgement of maintenance and production processes. A KPI is a measurable variable that can be used for mapping, analysis or evaluating a process technically, e.g. with respect to failures, downtime, short stoppages, or economically, with respect to production cost, economic losses, maintenance savings. It reflects either only technical measure, such as the number of failures, or economic measure, such as the economic losses due to inefficient maintenance, or a combined measure, such as maintenance savings per high quality item.

    The detailed analysis of CM signals is essential for detecting problems at an early stage, identifying root-causes, predicting damage severity and, planning and selecting the most profitable maintenance time and actions. The criteria influencing the arrangements and selection of CM systems and maintenance management policy will be controlled by important features;

    1. diagnosis accuracy,

    2. cost-effectiveness of maintenance decisions,

    3. applicability of the system in SMEs from technical, administrative and economic perspectives.

    4. Level of knowledge and experience in CM technology that is required for adequate implementation.

    From everyday experience, more accurate and high quality maintenance and operational data that are necessary for describing the strengths and weaknesses of production equipment are also important for  modifying the design of production equipment.  Also, maintenance role in modifying equipment design through providing the underlying information and evidences that are required to highlight weaknesses and justify modifications technically and economically.

    One of the biggest problems facing the implementation of CBM and especially predictive maintenance is that reliable predictive maintenance demands according to the current way a big number of sensors and may be of different types, e.g. for measuring vibration, SPM, acoustic emission, etc. At continuous monitoring of the health of production equipment, the problem becomes bigger due to the high investing capital that is demanded in many cases.

  • 99.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Maintenance Impact on Company Competitiveness and Profit2012In: Asset Management: the State of the Art in Europe from a Life Cycle Perspective / [ed] Telli van der Lei, Paulien Herder, Ype Wijnia, Dordrecht Heidelberg London New York: Springer Science+Business Media B.V., 2012, 1, p. 115-143Chapter in book (Refereed)
    Abstract [en]

    This chapter discusses the role of maintenance in relation to company profit. It discusses how the internal effectiveness, and creation and improvement of company competitiveness may be improved with better maintenance practices. In order to achieve better competitiveness, a conceptual model for integrating the operative and strategic level of operation is developed that is able to identify, quantify and eliminate losses in company profit.

  • 100.
    Al-Najjar, Basim
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    MDSS: ett beslutsstödsystem för effektivare underhållsåtgärder  del IV:1:22011In: Bättre produktivitet : tidning för PLAN och regionala produktivitetsföreningar : med plan-nytt, ISSN 1402-1145, no 1, p. 24-25Article in journal (Other (popular science, discussion, etc.))
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