A Model for Product Transfer Project

In this thesis a model for managing the product data in a product transfer project was created for ABB Machines. This model was then applied for the ongoing product transfer project during its planning phase. Detailed information about the demands and challenges in product transfer projects was acquired by analyzing previous product transfer projects in participating organizations. This analysis and the ABB Gate Model were then used as a base for the creation of the model for managing the product data in a product transfer project. The created model shows the main tasks during each phase in the project, their sub-tasks and relatedness on general level. Furthermore the model emphasizes need for detailed analysis of the situation during the project planning phase. The created model for managing the product data in a product transfer project was applied into ongoing project two main areas; manufacturing instructions and production item data. The results showed that the greatest challenge considering the product transfer project in previously mentioned areas is the current state of the product data. Based on the findings, process and resource proposals for both the ongoing product transfer project and the BU Machines were given. For manufacturing instructions it is necessary to create detailed process instructions in receiving organizations own language for each department so that the manufacturing instructions can be used as a training material during the training in sending organization. For production item data the English version of the bill of materials needs to be fully in English. In addition it needs to be ensured that bill of materials is updated and these changes implemented before the training in sending organization begins.

Tietovirtojen kehittäminen teollisessa valmistusprosessissa

Työn tavoitteena on analysoida ABB Oy:n Indutiokoneet-tulosyksikön tuotantoprosessin loppuosaa tietovirtojen näkökulmasta ja tutkia miten tiedonkulkua tulisi kehittää valmistusprosessin loppupään tehostamiseksi. Teoreettisena viitekehyksessä vertaillaan prosessinkehittämisen koulukuntia jatkuvaa parantamista ja prosessien suunnittelua ja käsitellään prosessin hallintaan ja kehittämiseen tarvittavia tietovirtoja ja niiden käsitteellistämistä sekä prosessinkehitysprojektin vaiheita. Tarkasteltavaa prosessia lähestytään analysoimalla, miten tutkittava osaprosessi toimii tällä hetkellä ja mitä ongelmia prosessin tiedonkulkuun liittyy. Analyysin pohjalta identifioidaan kahdeksan virhettä prosessissa ja virheiden poistamiseksi kehitystoimenpiteet, jotka liittyvät prosessin tekniseen infrastruktuuriin ja tietotekniseen tukeen sekä prosessin henkilöstön ohjeistukseen. Kehitysehdotusten avulla tarkasteltavassa työyksikössä nykyisin suoritettavia, varsinaisia työvaiheita tukevia vaiheita voidaan poistaa, mikä vapauttaa puolipäiväisen työpanoksen muihin tehtäviin ja pakkausprosessin virheiden väheneminen tuo rahallisia säästöjä kuljetuskustannuksissa.

Reducing Manufacturing Costs of the Screen Dryer’s Hot Section by Design

In this thesis, the purpose was to find the cost distribution of the screen dryer and the largest cost factors. The hot section of the screen dryer was revealed as the biggest cost factor, so composing new cost efficient solutions were directed to it. DFMA (Design for Manufacture and Assembly) was chosen to help the design process. DFMA is a product design strategy developed for taking manufacturing and assembly costs into account at the early stages of the design process. In the theory part of the thesis, other methods of economical design and tools needed for estimating manufacturing costs are introduced. In the empirical part, the hot section of the screen dryer was divided into sub-assemblies and their manufacturing costs were estimated. The design propositions were directed to the self-manufactured assemblies and parts. The new manufacturing costs were calculated for the developed propositions. Lastly, the most cost efficient solutions were summarized. The savings on the self-manufactured assemblies were about 40 %, which was about 13 % of the combined total costs of the hot section.

Magnetic Resonance Experiments with Atomic Hydrogen

In this thesis three experiments with atomic hydrogen (H) at low temperatures T<1 K are presented. Experiments were carried out with two- (2D) and three-dimensional (3D) H gas, and with H atoms trapped in solid H2 matrix. The main focus of this work is on interatomic interactions, which have certain specific features in these three systems considered. A common feature is the very high density of atomic hydrogen, the systems are close to quantum degeneracy. Short range interactions in collisions between atoms are important in gaseous H. The system of H in H₂ differ dramatically because atoms remain fixed in the H₂ lattice and properties are governed by long-range interactions with the solid matrix and with H atoms. The main tools in our studies were the methods of magnetic resonance, with electron spin resonance (ESR) at 128 GHz being used as the principal detection method. For the first time in experiments with H in high magnetic fields and at low temperatures we combined ESR and NMR to perform electron-nuclear double resonance (ENDOR) as well as coherent two-photon spectroscopy. This allowed to distinguish between different types of interactions in the magnetic resonance spectra. Experiments with 2D H gas utilized the thermal compression method in homogeneous magnetic field, developed in our laboratory. In this work methods were developed for direct studies of 3D H at high density, and for creating high density samples of H in H₂. We measured magnetic resonance line shifts due to collisions in the 2D and 3D H gases. First we observed that the cold collision shift in 2D H gas composed of atoms in a single hyperfine state is much smaller than predicted by the mean-field theory. This motivated us to carry out similar experiments with 3D H. In 3D H the cold collision shift was found to be an order of magnitude smaller for atoms in a single hyperfine state than that for a mixture of atoms in two different hyperfine states. The collisional shifts were found to be in fair agreement with the theory, which takes into account symmetrization of the wave functions of the colliding atoms. The origin of the small shift in the 2D H composed of single hyperfine state atoms is not yet understood. The measurement of the shift in 3D H provides experimental determination for the difference of the scattering lengths of ground state atoms. The experiment with H atoms captured in H2 matrix at temperatures below 1 K originated from our work with H gas. We found out that samples of H in H2 were formed during recombination of gas phase H, enabling sample preparation at temperatures below 0.5 K. Alternatively, we created the samples by electron impact dissociation of H₂ molecules in situ in the solid. By the latter method we reached highest densities of H atoms reported so far, 3.5(5)x10¹⁹ cm^-3. The H atoms were found to be stable for weeks at temperatures below 0.5 K. The observation of dipolar interaction effects provides a verification for the density measurement. Our results point to two different sites for H atoms in H2 lattice. The steady-state nuclear polarizations of the atoms were found to be non-thermal. The possibility for further increase of the impurity H density is considered. At higher densities and lower temperatures it might be possible to observe phenomena related to quantum degeneracy in solid.

Future trends of Finnish cement based construction

The construction material sector, as a capital intensive industry, is highly vulnerable to rapid fluctuations in the economic cycles. In Finland this was witnessed especially during the late 2000s, as in 2007 and 2008 the demand for several construction materials exceeded their supply and right after this, in 2009 the demand collapsed fast as a result of an international recession. These factors brought about the need to study the future trends of the market place of the commissioning company, Finnsementti Oy. As reliable short term market forecasts for the sector are difficult to compose, the study concentrates primarily in examining and identifying the trends that are likely to affect the Finnish cement industry, and as an extension, the concrete industry in a frame of 10 to 15 years. The study’s scope comprehends also the examination of the domestic construction sector, as it represents the end user industry of both cement and concrete. These motives for the study produce the research problem, which is to conduct a trend analysis for cement based building in the Finnish market area in the 2020s. The theoretical frame for composing a trend analysis in the case of this study is twofold. This is due to the fact that both, the macro and micro environments of the examined industries are studied. The main methods used are the PESTE-model (macro) and Porter’s five forces model (micro). The study applies a qualitative approach and the data is gathered by interviewing a group of experts from the cement, concrete and construction industries. The result of the paper is an overall trend analysis for the Finnish cement based building sector, which is based on ‘sub trend analyses’ concerning four identified sub-sectors of the Finnish construction industry. The results are a combination of findings from these sub-sectors and the analyzed data that deals with the studied sector’s macro and micro environment. The conclusions provide an overall picture of the examined sectors’ potential future as a whole and by defined sub-sectors of the construction industry. The recognition of future trends in different areas of the construction industry can be applied as a means for an industry actor’s decision making and in estimating the types of construction that are likely to grow or decline. Finally, based on the analyzed data and conclusions, the commissioning company is provided with a brief SWOT analysis, that provides additional tools for decision making and planning processes regarding the future.

Performance characteristic of moving average trading rules in the Finnish stock market

The thesis examines the profitability of DMAC trading rules in the Finnish stock market over the 1996-2012 period. It contributes to the existing technical analysis literature by comparing for the first time the performance of DMAC strategies based on individual stock trading portfolios to the performance of index trading strategies based on the trading on the index (OMX Helsinki 25) that consists of the same stocks. Besides, the market frictions including transaction costs and taxes are taken into account, and the results are reported from both institutional and individual investor’s perspective. Performance characteristic of DMAC rules are evaluated by simulating 19,900 different trading strategies in total for two non- overlapping 8-year sub-periods, and decomposing the full-sample-period performance of DMAC trading strategies into distinct bullish- and bearish-period performances. The results show that the best DMAC rules have predictive power on future price trends, and these rules are able to outperform buy-and-hold strategy. Although the performance of the DMAC strategies is highly dependent on the combination of moving average lengths, the best DMAC rules of the first sub-period have also performed well during the latter sub-period in the case of individual stock trading strategies. According to the results, the outperformance of DMAC trading rules over buy-and-hold strategy is mostly attributed to their superiority during the bearish periods, and particularly, during stock market crashes.

Toimituskyvyn kehittäminen prosessin materiaalipuutteita hallitsemalla

Toimituskyky on yrityksen suorituskykyä kuvaava tekijä, jolla on merkittävä vaikutus asiakastyytyväisyyteen, erityisesti valmistusteollisuudessa. Toimituskyky muodostuu materiaalin saatavuudesta ja logistisen järjestelmän toimitusvarmuudesta, joten hyvä toimituskyky edellyttää materiaalipuutteiden hallintaa. Tämän diplomityön tavoitteena on esittää, miten toimituskykyä voidaan kehittää tilaus-toimitusprosessin materiaalipuutteita hallitsemalla. Tutkimus toteutettiin konstruktiivisella tutkimusotteella case-tutkimuksena havainnoimalla toimintaa case-yrityksessä sekä analysoimalla case-yrityksen kirjallista materiaalia ja arkistoja. Yrityksessä havaittuja materiaalipuutteisiin liittyviä ongelmia tarkasteltiin tilaus-toimitusprosessin näkökulmasta prosessijohtamisen ja systemaattisen ongelmanratkaisun teorioiden avulla. Tutkimuksen tuloksena laadittiin kolme käytännönläheistä ratkaisuehdotusta havaittuihin ongelmiin; (1) materiaalipuutteiden syy-seuraussuhteita kuvaavat ongelma-syy-seurausketjut, (2) materiaalipuutteiden ongelmanratkaisumalli systemaattisen ongelmanratkaisun tueksi sekä (3) visuaalinen tilaus-toimitusprosessimalli, joka painottaa osaprosessien yhteyttä koko prosessin toimituskykyyn ja toimitusvarmuuteen. Tulosten mukaan materiaalipuutteet tulisi käsittää prosessin laatuvirheinä, jotka antavat arvokasta tietoa siitä, että prosessissa on laatuongelmia. Tulosten perusteella yrityksen toimituskykyä voidaan kehittää havainnoimalla tilaus-toimitusprosessin laatuvirheitä, selvittämällä laatuvirheiden syy-seuraussuhteet systemaattisesti ongelmanratkaisumallia hyödyntäen sekä toimimalla prosessiajattelun mukaisesti tilaus-toimitusprosessin toimituskyvyn jatkuvaa parantamista tavoitellen. Tutkimusongelman tarkastelutapaa ja työn tuloksia voidaan soveltaa samankaltaisiin tapauksiin, joissa tilaus-toimitusprosessin laatuvirheet, esimerkiksi materiaalipuutteet, paljastavat kehittämistä vaativia epäkohtia prosessin toimintatavoissa. Tilaus-toimitusprosessin toimituskykyä voidaan kehittää vain, jos panostetaan ajan hallintaan ja kykyyn toimia asiakaslupausten ja sopimusten mukaisesti.

Strategisten reaalioptioiden tunnistamiskyky suomalaisissa pk-yrityksissä. Merkitys, haasteet, käytäntö.

Tämän Pro Gradu –tutkielman aiheena on strategisten reaalioptioiden tunnistamiskyky suomalaisissa pk-yrityksissä. Tunnistamiskykyä tutkitaan kolmen alakysymyksen kautta ja näiden myötä voidaan muodostaa näkemys tunnistamiskyvyn merkityksestä, haasteista ja käytännöstä. Tutkimusstrategiana on kvalitatiivinen tutkimus ja tutkimusmetodina puolistrukturoimaton haastattelu. Tutkimus suoritetaan ilman selkeitä ennakkohypoteeseja. Laajan viitekehyksen tutkimukselle antaa reaalioptioajattelun teoria. Tutkimuksessa johdetaan strategisten reaalioptioiden tunnistamiskyvyn määritelmä taustateoriaan pohjautuen. Empiiristen tutkimustulosten mukaan strategisten reaalioptioiden tunnistamiskyvyn käytäntö ja haasteet nivoutuvat kolmen laajan teeman sisään. Näitä teemoja ovat yritysjohdon jatkuva valppaus mielentilana, tunnistamiskyky asiakas-, verkosto- ja kumppanuussuhteissa sekä henkilöstön kompetenssien rakentaminen. Tutkimuksen myötä vahvistuu näkemys, jonka mukaan reaalioptioajattelun omaksuminen voi kehittää merkittävästi yritysjohdon strategista ajattelukykyä sekä koko yrityksessä vallitsevaa toimeenpanokykyä. Strategisten reaalioptioiden tunnistamiskyky on puolestaan reaalioptioajattelun yksi tärkeä osa-alue, koska sillä mitä päädymme tunnistamaan, on tyypillisesti kauaskantoiset seuraukset.

Becoming a caring nurse : the heart of the matter in nurse education

This thesis in caring science didactics is based on a thinking, where the fundamental basis for the didactic is science-based, i.e. it does not emanate from the nursing profession but brings forward a didactic that grows out of caring science and its core substance and ethos. This view on didactics arises from the caritative theory developed by Eriksson. The overall aim of the study is to clarify the meaning and essence of understanding, as well as to explore and deepen the understanding of student nurses' processes of understanding and becoming with the intention of developing a theory model for caring didactics. The overarching research questions are: What is the essence of understanding (of caring science knowledge)? What are the possibilities and importance of understanding in the appropriation of caring science? What characterizes and impels the process of becoming? The thesis consists of four sub studies and a summary section. The overall methodological approach is hermeneutic involving quantitative as well as qualitative methods. The data for the study has been collected through a longitudinal research project that followed student nurses at three universities during their entire education. The empirical sub studies form the basis for the interpreted knowledge that is formulated in the new understanding. This new understanding have, through additional theory-charging with the theory fragments from Gadamer, generated the heuristic synthesis which is illustrated in the theory model. The findings shows that understanding can be described as something unlimited, as an endless movement, which can be illustrated as a lying eighth, a lemniscate. The lemiscate of understanding is characterized by seeing, knowing and becoming and consists of seven differently named phases; the acquired horizon of understanding, the encounter of horizons, the dialogue of horizons, the fusion of horizons, application, reflection and shaping a new horizon of understanding. Bildung (formation), is the ultimate imprint of the endless spiral movement of understanding. Ethos and arête constitute the hubs around which the lemniscate of understanding circles. These include the spirit and driving force that the student carries within. The caring culture encloses the lemniscate of understanding. The caring culture provides the life space of understanding and the prevailing basic values are evinced in the culture.

Operatiivinen säteilysuojelu Posivan kapselointi- ja loppusijoituslaitoksella

Olkiluodon ja Loviisan ydinvoimalaitoksilla syntyvä käytetty ydinpolttoaine tullaan kapseloimaan ja loppusijoittamaan Posiva Oy:n kapselointi- ja loppusijoituslaitoksella, joka rakennetaan Olkiluotoon. Käytetyn polttoaineen käsittelyssä on huomioitava säteilytyöhön liittyviä säteilysuojelunäkökohtia. Kapseloinnissa ja loppusijoituksessa käsitellään vaarallisia säteilylähteitä, joista merkittävimmät ovat käytetty ydinpolttoaine ja täyden loppusijoituskapselin röntgentarkastuslaitteisto. Posivan laitosten käyttötoiminnalle muodostetaan tässä diplomityössä säteilysuojelun vaatimusmäärittely. Kapseloinnin ja loppusijoituksen säteilytyövaiheet käsitellään yksitellen säteilysuojelun näkökulmasta. Työvaiheille määritetään tarpeelliset säteilysuojelutoimenpiteet ja työvaiheiden suorittamisen säteilysuojeluvaatimukset. Molempien laitosten valvonta-aluejärjestelyjä ja säteilyolosuhteiden vyöhykejakoa tarkennetaan. Työssä määritetään vyöhyke- ja aluerajoilla vaadittavat säteilysuojelutoiminnot sekä kontaminaationhallinnan laatuvaatimukset. Työssä käsitellään myös operatiivisen säteilysuojelun toimenpiteiden laatuvaatimuksia ja tarvittavaa säteilysuojelun sisäistä ohjeistoa. Työn tuloksena on kapselointi- ja loppusijoituslaitoksen käyttötoiminnan operatiivisten säteilysuojelutoimenpiteiden kuvaus. Kapselointi- ja loppusijoituslaitosten säteilysuojelua toteutetaan käyttövaiheen työnsuunnittelulla, operatiivisilla säteilysuojelutoimilla ja rakenteellisin keinoin. Työntekijöiden säteilyannokset minimoidaan välttämällä oleskelua kohonneen säteilytason alueilla. Kapselin röntgentarkastuslaitteiston käytön säteilyturvallisuus on varmistettava ja laitosten käyttötoiminta ei saa aiheuttaa työntekijöille sisäistä säteilyannosta. Useista työvaiheista ja käyttötoiminnan poikkeustilanteista on tehtävä jatkoanalyyseja työntekijöiden säteilysuojelun näkökulmasta.

Effect of thinning on stem form and wood characteristics of teak (Tectona grandis) in a humid tropical site in Costa Rica

Abstract

Along-scan radiometric gradient in Landsat images: understanding the relation between floristic and remote sensing information in tropical forests

The along-scan radiometric gradient causes severe interpretation problems in Landsat images of tropical forests. It creates a decreasing trend in pixel values with the column number of the image. In practical applications it has been corrected assuming the trend to be linear within structurally similar forests. This has improved the relation between floristic and remote sensing information, but just in some cases. I use 3 Landsat images and 105 floristic inventories to test the assumption of linearity, and to examine how the gradient and linear corrections affect the relation between floristic and Landsat data. Results suggest the gradient to be linear in infrared bands. Also, the relation between floristic and Landsat data could be conditioned by the distribution of the sampling sites and the direction in which images are mosaicked. Additionally, there seems to be a conjunction between the radiometric gradient and a natural east-west vegetation gradient common in Western Amazonia. This conjunction might have enhanced artificially correlations between field and remotely-sensed information in previous studies. Linear corrections may remove such artificial enhancement, but along with true and relevant spectral information about floristic patterns, because they can´t separate the radiometric gradient from a natural one.