984 resultados para Löytönen, Markku: Uutta maailmaa tutkimassa. Tutkimusmatkaaja Pehr Kalm Pohjois-Amerikassa.
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Äänitetty: 29.4.1971, [Helsinki?] (konserttitaltiointi).
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Soitinnus: käyrätorvi, orkesteri.
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Soitinnus: orkesteri.
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Soitinnus: urut.
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Digitoitu 15. 10 2008.
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Digitoitu 14. 8. 2008.
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Soitinnus: oktetti.
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Digitoitu 11. 8. 2008.
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Loppuu kesken.
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Digitoitu 11. 8. 2008.
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Vuorimestari Fredrik Tengström (1799-1871) perusti Helsinkiin Suomen ensimmäisen kivipainon vuonna 1834. Tätä aikaisemmin kuva- ja karttatyöt oli jouduttu teettämään ulkomaisissa painoissa. Myös kaivertajista oli Suomessa ollut pulaa. Tengströmin painama ja osittain piirtämäkin Helsinki-sarja esitteli kaupungin uutta empire-keskustaa, josta tuli maisemakuvauksen suosittu kohde. Osa kuvista pohjautui Magnus von Wrightin ja C. E. Westlingin luonnoksiin. Rakennustaide herätti ihastusta, ja aikalaiset kyselivätkin, oliko Perikleen Ateena yhtäkkiä siirtynyt Helsinkiin. Senaatintori-panoraamassa näkyvä päävartio purettiin vuonna 1840 Nikolainkirkon portaiden tieltä.
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This Master's thesis studies the development of interaction and socialization in online communities. A large number of online communities fade away even before they really get started. In many occasions the reason is that the community does not give anything new, or even if they do, the delivery does not satisfy the users. In this thesis guidelines were developed to help to see important things, which might be forgotten when developing an online community. The thesis goes through the characteristic of an online community and human behaviour related to them and also compares behaviour in the Internet and real life. In addition, usability is an important part of the online communities and thus it is also covered in this thesis. As a result of this thesis an 8-step guideline was developed to ease the design of an online community. Guidelines were also applied to two real life cases which are described as one part of this work.
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Painelajittelu on yksi yleisimmistä yksikköprosesseista paperin ja sellun valmistuksessa. Suurelta osin lajittimet toimivat niille asetettujen vaatimusten mukaisesti, mutta joissakin tapauksissa lajittimissa saattaa esiintyä ei-toivottavaa kuitujen kasautumista sekä kehräymän muodostusta. Niiden seurauksena lajittimien kapasiteetti alenee ja lajittelutulos heikkenee. Tämän työn tarkoituksena on uutta kuvantamistekniikkaa hyödyntäen selvittää miten kehräymät ja kuitukasaumat syntyvät painelajittimen sihtipinnalla ja miten retentioaineen syöttö sihdin ympäristössä vaikuttaa niiden syntyyn. Työn kirjallisuusosassa tarkastellaan painelajittimen toimintaa, rakennetta sekä lyhyen kierron konesihdin erityispiirteitä. Lisäksi tarkastellaan retentiokemikaalien käyttäytymistä leikkausvoimien alaisuudessa ja kuitukehräymien syntyä painelajittimissa. Kokeellisessa osassa on raportoitu kuvantamisjärjestelmällä saatuja tuloksia sekä esitetään havaintoja kehräymien ja kuitukasaumien synnystä ja niiden vaikutuksista painelajittimen toimintaan. Kuvausten perusteella voidaan sanoa, että kehräymän syntyminen sihdissä vaatii aina jonkinlaisen kuitukasauman olemassaoloa. Tällaista alkukasaumaa tarvitaan, jotta kuidut voivat ankkuroitua siihen kiinni ja johon kiinnittyneenä kuidut alkavat pyöriä virtauksessa muodostaen kehräymää. Kuitukasauman muodostuminen painelajittimessa johtuu pääosin sihdissä olevasta epäjatkuvuuskohdasta, massassa olevista epäpuhtauksista ja kuituflokeista jotka jäävät kiinni sihtipinnan aukkoihin tai lajittimen kapasiteetin ylittymisestä. Kehräymän syntyä kasauman jäljessä voidaan pitää enemmän sääntönä kuin poikkeuksena, mutta kehräytyminen on vähäisempää reikäsihdillä kuin rakosihdillä. Silloituspolymeerillä flokattu massa ei muodosta herkemmin kuitukasaumia sihtipintaan verrattuna flokkaamattomaan massaan. Lajiteltavan massan sakeuden nosto vähentää kuitukasaumien ja kehräymien syntyä. Kuitukasaumien ja kehräymien välttämiseksi on tärkeää, että sihtiä ei ajeta suunniteltua mitoitusaluetta suuremmilla tuotannoilla tai virtauksilla.
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Tämä diplomityö on tehty Leppäkosken Energia Oy:n ja Kemira Chemicals Oy:n yhteisyritys FC Energia Oy:lle. FC Energia Oy suunnittelee rakentaa uutta bio-vetyvoimalaitosta Sastamalaan. Voimalaitoksella tuotettaisiin Kemira Chemicals Oy:n ylijäämävedystä ja biopolttoaineista sähköä, kaukolämpöä ja prosessihöyryä. Ympäristölupaa on haettu hakkeen, turpeen ja kierrätyspuun poltolle vetykaasun kanssa. Voimalaitoksen kattilan toiminta perustuu kuplivaan leijukerrostekniikkaan. Diplomityössä selvitettiin, mitä muutoksia kierrätyspolttoaineiden käyttö vaatii leijukerrospoltossa verrattuna hakkeen ja turpeen polttoon. Kierrätyspolttoaineena käytetään hyvälaatuista kierrätyspuuta. Kierrätyspuun käytössä sovelletaan jätteenpoltto-asetusta. Jätteenpolttoasetus määrää tiukemmat päästöjen raja-arvot rinnakkaispoltolle kuin hakkeen ja turpeen poltolle sekä jatkuvatoimiset savukaasujen mittauslaitteet. Rinnakkaispolton hiukkasmaisten päästöjen tiukempi raja-arvo vaatii tehokkaamman sähkösuodattimen. Lisäksi kierrätyspuuta käytettäessä tulistimen materiaaliin tulee olla kestävämpää, mikä aiheuttaa huomattavan lisäinvestoinnin. Työn päätavoitteena oli selvittää, onko kierrätyspuun käyttö taloudellisesti kannattavaa. Oletetulla kierrätyspuun hinnalla 10 €/MWh kierrätyspuuta polttavan voimalaitoksen takaisinmaksuaika on sama kuin haketta polttavan laitoksen ja vuoden lyhyempi kuin turvetta polttavan laitoksen. Tulokseksi saatiin, että rinnakkaispoltto käyttö on taloudellisesti kannattavaa hakkeenpolttoon nähden jos kierrätyspuun hinta on alle 11,2 €/MWh. Kierrätyspuun polttoon liittyy toiminnallinen riski, koska vastaavanlaisia rinnakkaispolttolaitoksia ei ole aiemmin rakennettu.
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<b>The Ageing in Working Life. Do Adolescence and Schooling Beat Adulthood and Experience? </b> This study examines the changes in the work and the work organisations of employees in the fields of health care and retail trade who have turned 45 and their experience of change. In addition, the question of how ageing employees experience their status in post-modern working life is explored. Attention is also focused on the choices and decisions connected with staying at work and retiring. These views are examined in relation to professions and professional cultures. Thematic interviews (N=98) were used to gather the material. The effects of the market liberalistic turn in welfare policy are clearly seen in the everyday work of the health care professions. These changes were examined from the point of view of managing by outcomes and quality assurance, multi-professional cooperation, flexibility in the division of labour, and the spread of market-like procedures. The discourse of those in involved retail trade was dominated by extremely tight global market competition and control of outcomes, and by the structural changes taking place in the retail trade sector. This change discourse was to a large extent a reaction to those changes in the functional environment which were experienced as negative and to the conflict between their own professional identity and professional ethics on the one hand, and their functional environment on the other. There were also obstacles connected with professional culture: defending one's own station and power, guarding the 'frontier', showed up in attitudes towards new management and organisation models or towards structural and functional reforms. The deep structures of professional culture and the mindset of the actors change much more slowly than the functional practices of organisations. For those in a supervisory position, the loss of power due to becoming part of a chain or because of the introduction of a team organisation model was not an easy thing to accept. The nurses and others in related fields felt that they were forced to do work that was below their level of training and professional skill. For sales personnel and those who did assisting work in health care, power and the possibility of having an influence were not so important, as long as they were able to do their work in their own way and were trusted. This view is often completely forgotten, for example, in various organisation models in which power and the possibility of having an influence entwined with power are taken for granted as being clearly positive and desired aspects of job satisfaction. Up to date professional skills were experienced as being important from the point of view of professional identity and self-worth. Thus, training can be understood as a moral obligation, which in turn is intertwined with professional ideology. In the rhetoric of adult education, an adult is expected to be an active player who will seek training again and again if working life so requires. The dark side of this ideology, which leads to feelings of guilt, was apparent in the thoughts of the respondents. Am I never good enough at my job; why must I continually strive for better, additional qualifications? The majority of the respondents evaluated their expertise as being at quite a high level. This self-confidence did not extend to applying for a job. Job recruitment was seen as a situation in which age discrimination reached its peak. The interviewees were unanimous about the idea that society favours the young. Especially among those in the retail trade sector, there was a feeling that it would be difficult, if not impossible, to find a new job of the same level or a permanent post if they were made redundant. Age discrimination was also apparent in the retail trade field in the form of older employees being retired against their will or transferred to other tasks. It was felt that ruthless forced retirement of older workers was part of the personnel policy of some organisations. The importance of one's outward appearance was connected with the theme of discrimination. This phenomenon is described using the concept of the double standard of ageing in feminist research. An ageing woman is relegated to an inferior position due to both her age and her sex. A culture that would both make possible and allow various types of choices regardless of age, which is described as being characteristic of the post-modern era, does not seem to be very topical in the practice of working life. It is important for employees that the management and the personnel policy that is being implemented makes them feel like both their contribution and they as individuals are appreciated, that their opinions are listened to and that they are noticed as persons. The interviewees hoped for gratitude and a concern for the well-being of employees that shows in everyday life. They valued training and activities aimed at maintaining their work ability, but thought that better coping at work and a pleasant working environment cannot be achieved through such measures as along as the foundation is 'in a mess'. Development of the quality of working life is the only thing that can improve job satisfaction and get people to remain in the work force longer than at present. There should be a sufficient number of properly trained employees at the work place. It was important to the respondents that they be able to stay on their job to the end with honour, since compromising with their own quality standards or acting contrary to their ideal self-image in terms of professional ethics would strike a blow to their professional self-esteem. They called for the development of various types of workplace flexibility, and felt that they have the right to a lightened workload and to early retirement. Early retirement was even seen as an altruistic deed: it would free up a place for younger workers. Thoughts of retirements were explained by familiar factors such as health and finances, life situation, the enticement of free-time, as well as by various factors related to work. It is very important to ageing employees that their work has meaningful content. The values related to self-fulfilment are felt to be of great importance, and if they cannot be realised at work, the respondents wanted more free time, either through retirement or in the form of flexibility in working life.