Personal constructs in systemic practice

This paper intends to elaborate the relationship between Kelly's Personal Construct Theory (PCT) and the systemic therapies beyond their notable similarities. Kelly's constructive alternativism is situated in the context of the current constructivist orientation that the family therapy movement seems to be adopting. A model of change is presented based on PCT's experience cycle. From this cycle, the relationship between behaviors and constructions is elaborated incorporating Procter's (52, 53) notions of the Family Construct System (FCS) andposition. This model allows for interventions both at behavioral and construction levels, as well as allowing for a certain technical eclecticism while, at the same time, retaining a strong theoretical coherence. This approach is discussed in the context of the debate about strategizing, power, and control held by authors such as Golann, Hoffman, and Tomm. Finally, some implications for research are outlined.

Knapsack sets for cryptography

The basic goal of this study is to extend old and propose new ways to generate knapsack sets suitable for use in public key cryptography. The knapsack problem and its cryptographic use are reviewed in the introductory chapter. Terminology is based on common cryptographic vocabulary. For example, solving the knapsack problem (which is here a subset sum problem) is termed decipherment. Chapter 1 also reviews the most famous knapsack cryptosystem, the Merkle Hellman system. It is based on a superincreasing knapsack and uses modular multiplication as a trapdoor transformation. The insecurity caused by these two properties exemplifies the two general categories of attacks against knapsack systems. These categories provide the motivation for Chapters 2 and 4. Chapter 2 discusses the density of a knapsack and the dangers of having a low density. Chapter 3 interrupts for a while the more abstract treatment by showing examples of small injective knapsacks and extrapolating conjectures on some characteristics of knapsacks of larger size, especially their density and number. The most common trapdoor technique, modular multiplication, is likely to cause insecurity, but as argued in Chapter 4, it is difficult to find any other simple trapdoor techniques. This discussion also provides a basis for the introduction of various categories of non injectivity in Chapter 5. Besides general ideas of non injectivity of knapsack systems, Chapter 5 introduces and evaluates several ways to construct such systems, most notably the "exceptional blocks" in superincreasing knapsacks and the usage of "too small" a modulus in the modular multiplication as a trapdoor technique. The author believes that non injectivity is the most promising direction for development of knapsack cryptosystema. Chapter 6 modifies two well known knapsack schemes, the Merkle Hellman multiplicative trapdoor knapsack and the Graham Shamir knapsack. The main interest is in aspects other than non injectivity, although that is also exploited. In the end of the chapter, constructions proposed by Desmedt et. al. are presented to serve as a comparison for the developments of the subsequent three chapters. Chapter 7 provides a general framework for the iterative construction of injective knapsacks from smaller knapsacks, together with a simple example, the "three elements" system. In Chapters 8 and 9 the general framework is put into practice in two different ways. Modularly injective small knapsacks are used in Chapter 9 to construct a large knapsack, which is called the congruential knapsack. The addends of a subset sum can be found by decrementing the sum iteratively by using each of the small knapsacks and their moduli in turn. The construction is also generalized to the non injective case, which can lead to especially good results in the density, without complicating the deciphering process too much. Chapter 9 presents three related ways to realize the general framework of Chapter 7. The main idea is to join iteratively small knapsacks, each element of which would satisfy the superincreasing condition. As a whole, none of these systems need become superincreasing, though the development of density is not better than that. The new knapsack systems are injective but they can be deciphered with the same searching method as the non injective knapsacks with the "exceptional blocks" in Chapter 5. The final Chapter 10 first reviews the Chor Rivest knapsack system, which has withstood all cryptanalytic attacks. A couple of modifications to the use of this system are presented in order to further increase the security or make the construction easier. The latter goal is attempted by reducing the size of the Chor Rivest knapsack embedded in the modified system. '

New design of the frame for a permanent magnet generator

This thesis introduces a search for a new design of the frame for a permanent magnet generator mounted at a windmill. The objective of this work is to offer new design ideas for the stator frame - new concepts for connecting stator core to stator frame in a generator. Desired aims of new design concepts are: simplification of the structure production; decrease of material use; use of standard components; light weight of construction and etc. Thesis contains several new possible designs for the stator frame structure. Also, it has a list of possible connection concepts, which can be used to join the stator to the frame. All new ideas are described and compared according to its match to the desired purposes of the work. New design concepts are modeled using modern software. The main part of the Thesis contains several approximate computer models of the current and new offered constructions, description of loads and stress in the current stator frame. It has evaluation of the most important stress and load characteristics. The final design is a result of all previous research. It has a description of a new frame structure and joining concept for it. This structure matched main aims of work, but it does not have detailed design with dimensions and check calculations of the frame and welds. Thesis gives representation about design search, evaluation and comparison of new concepts of generator structure. Also, it gives general representation of renewable energy technology, knowledge about windmill turbines and its contents.

La gestión del regadío catalán: entre eficiencia, compatibilidad de usos y legitimidad

In previous years, irrigation and its management have become protagonists of a social debate that questions their economic, environmental and territorial limits in space and time. The hydraulic constructions as irrigation canals have played a central role in the attempt to “dominate” the water resources and so control the territory. However and after some time, both the modernization of traditional irrigation as the promotion of new irrigation projects are called into question due to the rise of environmental demands and promoting governance as a mechanism favourable to agreements between stakeholders. In Catalonia, the irrigation management must deal both efficiency requirements as to the compatibility between consumptive and non-consumptive water uses well as the social legitimacy of projects that exceed sectoral interest. The situation analysis of Bajo Ter and Muga historic irrigation canals and the running project of Segarra-Garrigues irrigation canal emphasize the need to promote a territorial management model capable of integrating and legitimize different competing water views

Gestió de pressupostos per a la construcció

En els últims anys el sector de la construcció ha experimentat un creixement exponencial. Aquest creixement ha repercutit sobre molts aspectes: des de la necessitat de tenir més personal a les obres, la implantació d’unes oficines per a poder gestionar la compatibilitat i portar un control sobre les obres fins a la necessitat d’haver de disposar de programes informàtics específics que ajudin a realitzar la feina de la manera més còmode i àgil possible. El projecte que s’ha dut a terme consisteix a cobrir una d’aquestes necessitats, que és la de la gestió dels pressupostos en les diferents obres que els constructors realitzen. Utilitza la base de dades de l’ITEC (institut de Tecnologia de la Construcció de Catalunya) sobre la qual treballen la immensa majoria dels arquitectes quan dissenyen les obres, però també permet entrar les pròpies dades que el constructor vulgui. L’usuari de l’aplicació podrà fer pressupostos per obres de nova construcció, reformes ... agrupant cada una d’elles per capítols. Aquests capítols els podem entendre com les diferents fases a dur a terme, per exemple: la construcció dels fonaments, l’aixecament de les parets o fer la teulada. Dins dels capítols hi trobem les partides, que és un conjunt de materials i hores de feina i maquinària per a dur a terme una part de l’obra, com per exemple seria fer un envà de separació entre habitacions. En aquest cas hi tindríem els diferents materials que necessitaríem, totxanes, morter; les hores de manobre necessàries per aixecar-la, el transport de tot el material fins a l’obra... Tots aquests paràmetres (materials, hores, transport...) s’anomenen articles i van inclosos a dins de les partides. Aquesta aplicació està dissenyada per funcionar en un entorn client/servidor, utilitzant com a servidor un Linux OpenSuse 10.2 i com a clients estacions de treball amb Windows XP, tot i que també podríem utilitzar d’altres versions dels sistemes operatius de Microsoft. L’entorn de desenvolupament utilitzat és el del llenguatge FDS , el qual ja porta integrat un gestor de fitxers que és el que es farà servir.

Control d'una bobinadora automàtica

Un dels problemes típics de regulació en el camp de l’automatització industrial és el control de velocitat lineal d’entrada del fil a les bobines, ja que com més gruix acumulem a igual velocitat de rotació de la bobina s’augmenta notablement la velocitat lineal d’entrada del fil, aquest desajust s’ha de poder compensar de forma automàtica per aconseguir una velocitat d’entrada constant. Aquest problema de regulació de velocitats és molt freqüent i de difícil control a la indústria on intervé el bobinat d’algun tipus de material com cablejat, fil, paper, làmines de planxa, tubs, etc... Els dos reptes i objectius principals són, primer, la regulació de la velocitat de rotació de la bobina per aconseguir una velocitat lineal del fil d’entrada, i segon, mitjançant el guiatge de l’alimentació de fil a la bobina, aconseguir un repartiment uniforme de cada capa de fil. El desenvolupament consisteix amb l’automatització i control d’una bobinadora automàtica mitjançant la configuració i programació de PLC’s, servomotors i encoders. Finalment es farà el muntatge pràctic sobre una bancada per verificar i simular el seu correcte funcionament que ha de donar solució a aquests problemes de regulació de velocitats. Com a conclusions finals s’han aconseguit els objectius i una metodologia per fer una regulació de velocitats de rotació per bobines, amb accionaments de servomotors amb polsos, i a nivell de coneixements he aconseguit dominar les aplicacions d’aquest tipus d’accionaments aplicats a construccions mecàniques.

La adquisición de la interrogación: las interrogativas parciales en catalán y castellano = The acquisition of interrogatives:Wh-questions in Catalan and Spanish

En este trabajo se describe la naturaleza y secuencia de adquisición de las preguntas interrogativas parcialesen niños de habla catalana y/o castellana dentro de un marco de análisis según el cual la adquisición de lasestructuras lingüísticas se construye gradualmente desde estructuras concretas hasta estructuras más abstractas.La muestra utilizada se compone de 10 niños y niñas procedentes de corpus longitudinales cuyas edades van delos 17 meses a los 3 años. El análisis se ha realizado atendiendo a la estructura sintáctica de la oración, loserrores, los pronombres y adverbios interrogativos, y la tipología verbal. Los resultados muestran que la secuenciade adquisición pasa por un momento inicial caracterizado por producciones estereotipadas o fórmulas,durante el cual sólo aparecen algunas partículas interrogativas en estructuras muy concretas. Posteriormente lainterrogación aparece con otros pronombres y adverbios y se diversifica a otros verbos, además, no se observanerrores en la construcción sintáctica. Estos resultados suponen un hecho diferencial respecto de estudios previos enlengua inglesa

Concentrated Winding Multiphase Permanent Magnet Machine Design and Electromagnetic Properties – Case Axial Flux Machine

Concentrated winding permanent magnet machines and their electromagnetic properties are studied in this doctoral thesis. The thesis includes a number of main tasks related to the application of permanent magnets in concentrated winding open slot machines. Suitable analytical methods are required for the first design calculations of a new machine. Concentrated winding machines differ from conventional integral slot winding machines in such a way that adapted analytical calculation methods are needed. A simple analytical model for calculating the concentrated winding axial flux machines is provided. The next three main design tasks are discussed in more detail in the thesis. The magnetic length of the rotor surface magnet machines is studied, and it is shown that the traditional methods have to be modified also in this respect. An important topic in this study has been to evaluate and minimize the rotor permanent magnet Joule losses by using segmented magnets in the calculations and experiments. Determination of the magnetizing and leakage inductances for a concentrated winding machine and the torque production capability of concentrated winding machines with different pole pair numbers are studied, and the results are compared with the corresponding properties of integral slot winding machines. The thesis introduces a new practical permanent magnet motor type for industrial use. The special features of the machine are based on the option of using concentrated winding open slot constructions of permanent magnet synchronous machines in the normal speed ranges of industrial motors, for instance up to 3000 min-1, without excessive rotor losses. By applying the analytical equations and methods introduced in the thesis, a 37 kW 2400 min-1 12-slot 10-pole axial flux machine with rotor-surfacemounted magnets is designed. The performance of the designed motor is determined by experimental measurements and finite element calculations.

Computational and Experimental Investigation of the Grooved Roll in Paper Machine Environment

In the paper machine, it is not a desired feature for the boundary layer flows in the fabric and the roll surfaces to travel into the closing nips, creating overpressure. In this thesis, the aerodynamic behavior of the grooved roll and smooth rolls is compared in order to understand the nip flow phenomena, which is the main reason why vacuum and grooved roll constructions are designed. A common method to remove the boundary layer flow from the closing nip is to use the vacuum roll construction. The downside of the use of vacuum rolls is high operational costs due to pressure losses in the vacuum roll shell. The deep grooved roll has the same goal, to create a pressure difference over the paper web and keep the paper attached to the roll or fabric surface in the drying pocket of the paper machine. A literature review revealed that the aerodynamic functionality of the grooved roll is not very well known. In this thesis, the aerodynamic functionality of the grooved roll in interaction with a permeable or impermeable wall is studied by varying the groove properties. Computational fluid dynamics simulations are utilized as the research tool. The simulations have been performed with commercial fluid dynamics software, ANSYS Fluent. Simulation results made with 3- and 2-dimensional fluid dynamics models are compared to laboratory scale measurements. The measurements have been made with a grooved roll simulator designed for the research. The variables in the comparison are the paper or fabric wrap angle, surface velocities, groove geometry and wall permeability. Present-day computational and modeling resources limit grooved roll fluid dynamics simulations in the paper machine scale. Based on the analysis of the aerodynamic functionality of the grooved roll, a grooved roll simulation tool is proposed. The smooth roll simulations show that the closing nip pressure does not depend on the length of boundary layer development. The surface velocity increase affects the pressure distribution in the closing and opening nips. The 3D grooved roll model reveals the aerodynamic functionality of the grooved roll. With the optimal groove size it is possible to avoid closing nip overpressure and keep the web attached to the fabric surface in the area of the wrap angle. The groove flow friction and minor losses play a different role when the wrap angle is changed. The proposed 2D grooved roll simulation tool is able to replicate the grooved aerodynamic behavior with reasonable accuracy. A small wrap angle predicts the pressure distribution correctly with the chosen approach for calculating the groove friction losses. With a large wrap angle, the groove friction loss shows too large pressure gradients, and the way of calculating the air flow friction losses in the groove has to be reconsidered. The aerodynamic functionality of the grooved roll is based on minor and viscous losses in the closing and opening nips as well as in the grooves. The proposed 2D grooved roll model is a simplification in order to reduce computational and modeling efforts. The simulation tool makes it possible to simulate complex paper machine constructions in the paper machine scale. In order to use the grooved roll as a replacement for the vacuum roll, the grooved roll properties have to be considered on the basis of the web handling application.

Permanent Magnet Synchronous Machine for Parallel Hybrid Vehicle

The aim of this thesis is to describe hybrid drive design problems, the advantages and difficulties related to the drive. A review of possible hybrid constructions, benefits of parallel, series and series-parallel hybrids is done. In the thesis analytical and finite element calculations of permanent magnet synchronous machines with embedded magnets were done. The finite element calculations were done using Cedrat’s Flux 2D software. This machine is planned to be used as a motor-generator in a low power parallel hybrid vehicle. The boundary conditions for the design were found from Lucas-TVS Ltd., India. Design Requirements, briefly: • The system DC voltage level is 120 V, which implies Uphase = 49 V (RMS) in a three phase system. • The power output of 10 kW at base speed 1500 rpm (Torque of 65 Nm) is desired. • The maximum outer diameter should not be more than 250 mm, and the maximum core length should not exceed 40 mm. The main difficulties which the author met were the dimensional restrictions. After having designed and analyzed several possible constructions they were compared and the final design selected. Dimensioned and detailed design is performed. Effects of different parameters, such as the number of poles, number of turns and magnetic geometry are discussed. The best modification offers considerable reduction of volume.

Suluntekolaitteen toteutusvaihtoehdot: Kannattavuustarkastelu ja valinta

Diplomityön toimeksiantajayritys on 20 henkilöä työllistävä konepaja, jonka yksi liiketoiminta-alueista on koneenrakennus. Työn tutkimusongelmana oli selvittää, mikä on kannattavin kolmesta tarkasteltavasta teknisestä vaihtoehdosta lujitemuoviputken suluntekolaitteen toteuttamiseksi. Kyseessä on tapaustutkimus, jossa on käytetty esimerkkiasiakkaan, muovituotteita teollisuudelle valmistavan yrityksen, lähtötietoja. Kannattavuustekijöiksi määriteltiin kannattavuus asiakkaan näkökulmasta, kannattavuus toimittajan näkökulmasta sekä vaihtoehtoihin liittyvä epävarmuus. Asiakkaan näkökulmasta kannattavuutta on arvioitu investoinnin edullisuutena, toimittajan näkökulmasta projektin kannattavuutena taloudellisesta näkökulmasta ja vaihtoehtoihin liittyvää epävarmuutta muun muassa herkkyysanalyyseillä. Kannattavuustarkastelu on toteutettu Excel -mallilla, joka sisältää pisteytysjärjestelmän kannattavimman vaihtoehdon valitsemiseksi. Osana tutkimusta laadittiin sulunteon laatuvirheitä koskeva laatukustannusselvitys ja hinnoiteltiin laitteet. Kannattavuustarkastelun tuloksena todettiin, että sulunteko kannattaa koneellistaa ja että kannattavin tarkasteltavista vaihtoehdoista on konstruktio, jossa kudokset kelataan muotille rinnakkain. Todettiin, että laatukustannukset ovat merkittävä kustannuserä. Laadittua Excel-mallia voidaan käyttää myös muiden tuotteistusprojektien kannattavuustarkasteluun. Toimeksiantajayritys voi käyttää työssä saavutettuja tuloksia myyntiargumenttina.

Romanssien ja runouden aikakausi. Thomas Warton keskiaikaa määrittelemässä 1750–1790

Tutkimukseni käsittelee keskiajan nousua historian tärkeäksi periodiksi 1700-luvun Englannissa näkökulmanaan Thomas Wartonin (1726–1790) kirjoitukset. Warton oli Oxfordin yliopistossa toiminut oppinut antikvaari. Wartonin pääteos History of English Poetry (1774–1781) ei nimestään huolimatta ollut moderni kirjallisuushistoria vaan 1000–1500-luvun kirjoitettua kulttuuria laajasti käsitellyt vernakulaariin kirjallisuuteen pohjautunut esitys. Warton ja hänen lähipiiriinsä kuuluneet tutkijat tarjoavat erityisen mahdollisuuden tarkastella, miten käsitys keskiajasta omana aikakautenaanmuodostui 1700-luvun lopulla. Tutkin Wartonin ja hänen aikalaistensa toisen vuosituhannen alusta kirjoittamia arvioita Michel de Certeaun historiografisen operaation käsitteen avulla. Se koostuu kolmesta vaiheesta: Alue määrittelee sosiaaliset riippuvuussuhteet ja vaikuttimet, jotka ohjaavat tutkimusta. Käytäntö viittaa siihen, miten historioitsija valitsee materiaalinsa ja muokkaa siitä historiankirjoituksena hahmottuvan kokonaisuuden. Lopuksi kirjoitus konkreettisena ja fyysisenä ilmiönä luo illuusion lopullisuudesta ja huonosti sopivien osien yhteenkuuluvuudesta. de Certeaun teoria soveltuu paremmin vanhemman historiankirjoituksen ja oppineisuuden tarkasteluun kuin historiantutkimuksen narratiiveja analysoivat teokset, koska se kontekstualisoi laajemmin historiankirjoitukseen vaikuttavat ilmiöt. Thomas Warton ja muut 1700-luvun puolivälin oppineet määrittelivät keskiajan fiktiivisten tekstien avulla. Warton tutustui tarkasti romansseihin ja kronikoihin. Erityisen suuri merkitys keskiajan hahmottamisen kannalta oli Geoffrey Monmouthilaisen kronikalla Historia regum britanniae, joka esitteli Englannin myyttisen varhaisen historian yhdistämällä Rooman ja oman kansallisen perinteen. Geoffreyn kronikan avulla Warton huomasi keskiaikaisten tarinoiden laajan vaikutuksen; hän kirjoitti erityisesti kuningas Arthuriin liittyneiden kertomusten merkityksestä, joka jatkui aina 1500-luvulle asti. Näin Warton löysi antiikin perinteelle haastajan keskiaikaisesta kulttuurista. Wartonin tapa esitellä keskiaikaa perustui osittain valistusajan sulavasti kirjoitetuille universaalihistorioille, osittain oppineelle luettelomaiselle esitystavalle. Käytännössä Wartonin pitkät johdantotutkielmat kuitenkin johdattavat lukijaa keskeisiin teemoihin. Niitä ovat mielikuvituksen väheneminen uusimmassa kirjallisuudessa ja toisaalta hienostuneisuuden ja tiedon kasvu. Warton ei missään vaiheessa kerro, liittyvätkö nämä teemat yhteen, mutta tulkintani mukaan ne liittyivät. Warton ajatteli kirjallisuuden menettäneen olennaisen mielikuvituksen samaan aikaan, kun yhteiskunta oli kehittynyt. Tämä auttaa hahmottamaan koko kirjallisuuden historiaa: Warton etsi alkuperäistä mielikuvitusta niin antiikin Kreikasta, Orientista kuin muinaisesta Skandinaviasta. History of English Poetry ei pohtinut vain kirjallisuuden ja yhteiskunnan suhdetta, sillä Warton ajatteli voivansa tutkia keskiajan yhteiskuntaa kronikoiden ja romanssien avulla. Hänen käsityksensä feodalismista, hovien elämästä ja keskiaikaisista tavoista perustuivat niihin. Warton ei huomannut, että hänen käyttämänsä lähteet olivat tietoisia kirjallisia konstruktioita vaan hän piti niitä totuudenmukaisina kuvauksina. Toisaalta Wartonin tulkintaan heijastuivat myös 1700-luvun käsitykset yhteiskunnasta. Keskiajan lähteiden kuvaukset ja 1700-luvun ideaalit vaikuttivat lopulta siihen, millaiseksi populaari kuva keskiajasta kehittyi.

Finnair’s “New Silk Road” in the New Millennium: An Analysis of the Construction of Asia and of the Company

During the past century, an increasingly diverse world provided us with opportunities for intercultural communication; especially the growth of commerce at all levels from domestic to international has made the combination of the theories of intercultural communication and international business necessary. As one of the main beneficiaries in international business in recent years, companies in airline industries have developed their international market. For instance, Finnair has developed its Asian strategy which responds to the increasing market demand for flights from Europe to Asia in the new millennium. Therefore, the company manages marketing communication in a global environment and becomes a suitable case for studying the theories of intercultural communication in the context of international marketing. Finnair implemented a large number of international advertisements to promote its Asian routes, where Asia has been constructed as a number of exotic destinations. Meanwhile, the company itself as a provider of these destinations has also been constructed contrastively. Thus, this thesis aims at research how Finnair constructs Asia and the company itself in the new millennium, and how these constructions compare with the theories of intercultural communication. This research applied the theories of international marketing, intercultural communication and culture. In order to analyze the collected corpora as Finnair’s international advertisements and its annual reports in the new millennium, the methods of content analysis and discourse analysis have been used in this research. As a result, Finnair has purposefully applied the essentialist approach to intercultural communication and constructed Asia as an exotic “Other” due to the company’s market orientation. Meanwhile, Finnair has also constructed the company itself two identities based on the same approach: as an international airline provider between Europe and Asia, as well as a part of Finnish society. The combination of intercultural communication and international marketing theories, together with the combination of the methods of content analysis and discourse analysis ensure the originality of this paper.

Musikaliska möten man minns : om musikundervisningen i årskurserna sju till nio som en arena för starka musikpplevelser

Earlier research has shown that strong experiences related to music (SEM) can occur in very different contexts and take on many different forms. Experiences like these seem significant and have among other things reportedly had an affect on the individual's continuing relationship towards music, which makes them interesting from a pedagogical point of view. Formal teaching situations, though, are under-represented in studies where people have been asked to describe strong experiences that they have had in connection with music. The purpose of my thesis is to investigate what SEM may mean to pupils and teachers in lower secondary school (grades 7-9), and to inquire more deeply into the potential "space" for such experiences within school music education. On a comprehensive level my ambition is to deepen the understanding for SEM as a possible element in pedagogical situations. Three empirical perspectives are employed: pupil-, teacher- and curriculum perspectives. The pupil perspective involved an analysis of written accounts of 166 fifteen-year-olds, describing own strong experiences. The teacher perspective involved studying 28 music teachers' conceptions of the purpose of teaching music in school as well as their understanding about strong music experiences in school context. Further, the teachers' descriptions of SEM that they have had themselves were analysed. The curriculum perspective is reflected through a study of how music experience was represented in 24 local and 2 national curriculum texts for music. Grounded in a phenomenological-hermeneutical perspective the material have been analyzed both qualitatively and quantitatively. The result points towards the fact that the music education in school has the potential to become an arena for SEM and that this can happen in relation to a multitude of activities and genres and take on many different expressions. Only one pupil referred to a musical encounter in the classroom environment; all other experiences that occurred inside the frame of school activity had taken place in other arenas (the school hall, public concert halls, and so on). However, more than 98 % of the descriptions concerned musical encounters in leisure time contexts. The significance of SEM is further clarified by narrative constructions. SEM as a conception does not occur on the curriculum level; however the analyze revealed a number of interesting "openings" which are illustrated. Even though all teachers displayed a fundamentally positive attitude towards the idea of regarding SEM as a feature of formal musical learning, it became clear that many teachers never had approached this theme from a pedagogical point of view before. Still, they proved to have an evident "familiarity" towards the phenomenon based on their own experiences of receptive and performative musical encounter. The possible space for strong musical experiences within school music education is specified through a detailed illustration of six specific themes derived from the reasoning of the teachers. Furthermore, this is described through a mapping of the potential experiencing zone, constructed from the teachers descriptions of educational aims.

Pohjakuonan käsittelyn ja hyötykäytön toimintamallin muodostaminen Kotkan Energia Oy:n jätteenpolttolaitokselle

Tavoitteena tässä diplomityössä oli selvittää Kotkan Energia Oy:n jätteenpolttolaitoksen toiminnassa syntyvän pohjakuonan hyötykäyttömahdollisuuksia ja kustannuksiltaan järkevin tapa käsitellä pohjakuona. Tarkasteltavia vaihtoehtoja hyötykäytön osalta olivat erilaiset maarakennustyöt sekä kaatopaikkojen peittäminen. Hyötykäyttövaihtoehdoille vaihtoehtoisena ratkaisuna tutkittiin kaatopaikkasijoituksen kannattavuutta. Pohjakuonan käyttöä maarakentamisessa, jätetäyttöjen peitemaina sekä pohjakuonan loppusijoitusta kaatopaikoille säätelee lainsäädäntö. Valtioneuvoston asetuksessa kaatopaikoista on määritelty loppusijoitettaville jakeille liukoisuus raja-arvot, joiden mukaisesti jätteet sijoitetaan joko pysyvän jätteen, tavanomaisen jätteen tai ongelmajätteen kaatopaikoille. Jätetäyttöjen peitemateriaalina käytettävän jakeen on myös täytettävä kyseisen kaatopaikkaluokan liukoisuusraja-arvot. Maarakennusasetus antaa puolestaan liukoisuus- ja pitoisuusraja-arvot maarakennuksessa hyödynnettäville jakeille. Pohjakuonan hyötykäyttö vaatii kuitenkin aina ympäristöluvan. Hyötyvoimalan pohjakuonasta tehtyjen analyysien perusteella voidaan todeta, että käsiteltyä pohjakuonaa olisi mahdollista käyttää esimerkiksi kenttien ja kaatopaikkojen pohjarakenteissa sekä kaatopaikoilla jätetäyttöjen peitemaina. Pohjakuonan hyödyntäminen kaukolämpötöiden maarakennuksessa vaatii vielä lisätutkimuksia putkien korroosioriskin osalta. Diplomityön tuloksena kehitettiin toimintamalli, jonka avulla Kotkan Energia Oy:n on mahdollista säästää kuonan käsittelyn ja hyötykäytön kustannuksissa. Kustannuksiltaan parhaaksi vaihtoehdoksi osoittautui kuonan käsittely omalla biopolttoaineiden välivarastolla sekä käsitellyn pohjakuonan hyödyntäminen välivaraston pohjarakenteissa.