Browsing 1f Harjoitus- ja seminaarityöt / Seminar reports by Issue Date
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ItemKorkean polton mattalasitetutkimus -tavoitteena vihreää väriä(Aalto University, 2011) Ritola, Jenni; Department of Design; Muotoilun laitos; School of Arts, Design and Architecture; Taiteiden ja suunnittelun korkeakoulu ItemBiomass Gasification(Aalto University, 2011) Kouhia, Mikko; Energiatekniikan laitos; Department of Energy Technology; Insinööritieteiden korkeakoulu; School of EngineeringThere is great interest in the utilization of biomass in high efficiency power generation and in the production of high quality synthetic fuels and chemicals. Gasification, among biochemical conversion, is one way to achieve this goal. In this report the operational principle of gasification is reviewed, an analysis of different biomasses is presented and the main gasifier types are examined. The product gas composition, cleaning and utilization are examined and the commercial status of gasification is studied. There are many ways to gasify biomass, but the most common way in medium-to-large scale is to use atmospheric circulating fluidized bed gasifiers; downdraught fixed bed gasifiers are used in a smaller scale. Gasification has not yet achieved extensive usage, but it is likely to be utilized increasingly in the future as an environmentally friendly way to produce power, fuels and chemicals. ItemKeramiikasta syntyvä ääni - Mitkä tekijät vaikuttavat keramiikasta syntyvään ääneen ja kuinka siihen voidaan vaikuttaa(Aalto University, 2011) Paikkari, Mari; Department of Design; Muotoilun laitos; School of Arts, Design and Architecture; Taiteiden ja suunnittelun korkeakoulu ItemVäriä tonkimassa, paikallisia maanäytteitä lasitteiden ja massojen osana(Aalto University School of Art, Design and Architecture, 2011) Happonen, Heta; Department of Design; Muotoilun laitos; School of Arts, Design and Architecture; Taiteiden ja suunnittelun korkeakouluTutkimuksessa testattiin kahta eri löytömateriaalia osana massoja ja lasitteita. Näytteitä sekoitettiin posliinimassan ja kirkkaan lasitteen joukkoon. Koe-esineet poltettiin pelkistävässä kaasupoltossa, sekä kahdessa eri lämpötilassa sähköuunia käyttäen. ItemNäkymättömän jäljillä: Neodyymilasin sinisen sävyn jäljittely(Aalto University, 2013) Majuri, Sino; Department of Design; Muotoilun laitos; School of Arts, Design and Architecture; Taiteiden ja suunnittelun korkeakoulu ItemScenario based security evaluation: Generic OpenFlow network(Aalto University, 2014) Lähteenmäki, Jarno; Tietoliikenne- ja tietoverkkotekniikan laitos; Department of Communications and Networking; Networking Laboratory; Sähkötekniikan korkeakoulu; School of Electrical EngineeringDemand for network programmability was recognized when development of protocolsslowed down due to network inflexibilities in 1980s. Research speeded up andmany proposals were made to solve architectural issues during 2000s. Academicworld put up an initiative to build up new programmable network architecturelater 2000s. OpenFlow was born.In modern public network infrastructures the security of the network architectureis crucial to archive data confidentiality, integrity and authenticity, yet high availability.Many studies have shown that there are many security vulnerabilities andissues on current OpenFlow implementations and even in OpenFlow specificationitself. Many proposals have been made to enhance these known issues. In thisresearch, the scenario based security evaluation of the generic OpenFlow networkarchitecture was carried out using technology publications and literature. Thesecurity evaluation framework was used in security assessment.Proposed risk mitigation patterns were found to be effective on most of the casesfor all 13 identified and evaluated scenarios. Lack of mandatory encryption andauthentication in OpenFlow control channel were most critical risks on generallevel. OpenFlow specification should provide clear guidance how this should beimplemented to guarantee inter-operability between different vendors. Short termsolution is to use IPSec. Second critical issue was that bugs and vulnerabilitiesin OpenFlow controller and switch software are causing major risks for security.Proper quality assurance process, testing methods and evaluation are needed toenhance security on all phases of the software production.Current OpenFlow implementations are suffering poor security. Tolerable levelcan be reached by utilizing small enhancements. There are still many areas whichneed to be researched to archive solid foundation for software defined networks ofthe future. ItemEsitutkimus lasijauheen hiukkaskoon ja -muodon merkityksestä 3D-tulostamisessa(Aalto University, 2015) Saarelainen, Tuuli; Muotoilun laitos; Department of Design; Taiteiden ja suunnittelun korkeakoulu; School of Arts, Design and Architecture ItemBiomuovit kuorirakenteina -Biomuovien vertailu vedenpuhdistimen kuorirakenteeksi(Aalto University, 2015) Jokinen, Eeva; Muotoilun laitos; Department of Design; Taiteiden ja suunnittelun korkeakoulu; School of Arts, Design and Architecture ItemVuokratuottoihin vaikuttavat tekijät Helsingissä - Harjoitustyö(Aalto University, 2015) Isomöttönen, Jouni; Nurmi, Kalle; Viirimäki, Juuso; Maankäyttötieteiden laitos; Department of Real Estate, Planning and Geoinformatics; Insinööritieteiden korkeakoulu; School of Engineering ItemAttractiveness of Different Districts in Helsinki: Segregation in Terms of Poor Financial and Educational Status of the Residents(Aalto University, 2015) Anttila, Linda; Korpela, Topi; Lammi, Saskia; Pääkkönen, Laura; Tani, Ilkka; Maankäyttötieteiden laitos; Department of Real Estate, Planning and Geoinformatics; Real Estate Economics; Kiinteistötalouden tutkimusryhmä; Insinööritieteiden korkeakoulu; School of EngineeringThe aim of this research is to study attractiveness of different districts in Helsinki. The research tries to find out if there are differences, and on the other hand, similarities between different districts in Helsinki if the financial and educational status of the residents are compared. The main research question is; are there some districts in Helsinki that have a risk to segregate in terms of poor financial and educational status of the residents? Previous researches related to this topic were mainly related to either educational segregation or economic segregation but there is a lack of researches which concentrate on the both aspects at the same time, and take also bad credit history into consideration. This study is based on three different open data sets, two datasets from Paavo and one from Suomen Asiakastieto. In order to find out if there is segregation based on the average income, education level and bad credit history we use clustering analysis and especially dendrograms to analyze the data. In this study dendrograms are used for hierarchical cluster analysis. All of the dendrograms are created in IBM SPSS Statistics 22 -program. The results derived from two dendrograms and a proximity matrix created indicate that in general all of the areas in Helsinki are quite similar with each other. However, the dissimilarity between the extremities is eminent. ItemLasitteiden värjäystä värimetallioksideilla -tavoitteena vaaleanpunainen ja harmaa(Aalto University, 2015) Halko, Saija; Muotoilun laitos; Department of Design; Taiteiden ja suunnittelun korkeakoulu; School of Arts, Design and Architecture ItemGamification of Education: Cities Skylines as an Educational Tool for Real Estate and Land Use Planning Studies(Aalto University, 2015) Haahtela, Pyry; Maankäyttötieteiden laitos; Department of Real Estate, Planning and Geoinformatics; Insinööritieteiden korkeakoulu; School of EngineeringComputer games and other simulations have for a long time been used as a teaching method all around the world. They give a comprehensive, but simplified view of the reality to students with a hands-on approach to problems. Games as a teaching method offer competitiveness and a chance to see the results of decision-making in real time. These elements offer a different kind of inner motivation to learning, which usually is highly welcomed among students. Computer games give a contrast to the everyday not-so-interactive class teaching, and therefore have gained high popularity in schools and universities as a method for engagement.Cities Skylines is a city planning game that offers a simplified city planning experience, but also a surprisingly in-depth understanding of a city and its various functions. Alas, the planning system in the game is streamlined and does not include a realistic view of a city planning process with its multiple participants and developers. However, the city as a functioning system is well modeled and has some real potential for educational purposes. As a stand-alone game Cities Skylines does not fully meet the requirements for an educational game in the field of real estate or city planning. Nonetheless, the game is an exceptionally well developed platform and supports plethora of modifications. With a select few, well-thought modifications, the game would support educational uses, especially city planning problem solving using scenarios. ItemOpen data appetite: How nations' hunger for open government data varies with their economic complexity(Aalto University, 2015) Savenkov, Anthony; Maankäyttötieteiden laitos; Department of Real Estate, Planning and Geoinformatics; Insinööritieteiden korkeakoulu; School of EngineeringThere are significant cross-national differences in government data openness.The research takes an economic complexity perspective to help explain this phenomenon.It theoretically explores the notion that data openness is more valuable to complex economies, and that a nation's economic complexity is thereby an incentive to “open up” and exploit government data. Empirical data from ninety-four countries is used to test the relationship between economic complexity and government data openness. The tests indicate a moderate to strong link.