833 resultados para Aho, Riitta


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Tässä katsauksessa esitetään tiiviisti tärkeimmät ja ajankohtaisimmat ympäristön tilaan liittyvät aiheet. Katsauksen ovat koonneet Uudenmaan elinkeino-, liikenne- ja ympäristökeskuksen asiantuntijat. Tietolähteinä on käytetty ympäristöhallinnon sekä muiden viranomaisten ja tutkimuslaitosten tietojärjestelmiä.

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I denna översikt presenteras de viktigaste och mest aktuella ämnena som berör miljöns tillstånd. Översikten har utarbetats av experter vid NTM-centralen i Nyland. Som källor har använts miljöförvaltningens samt andra myndigheters och forskningsinstituts informationssystem

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I studied the associations between migration-related physiological regulation (corticosterone) and body condition of barn swallows (Hirundo rustica L.). An additional purpose was to determine whether oxidative stress and biotransformation activity vary seasonally. Since physiological regulation, biotransformation activity and the stress involved may be important factors for body condition during migration; they may have direct effects on migration success. This in turn may influence other important life history stages, such as breeding and moult. In the thesis I used barn swallow data of the Finnish Ringing Centre (1997–2009), consisting of all juveniles ringed in the nests and recaptured from night roosts later the same autumn. Before the autumn migration in Finland I also captured, ringed and sampled barn swallows from night roosts in 2003, 2006, 2007 and 2011. Samples preceding spring migration in South Africa were collected in 2007. Juvenile barn swallows started to migrate southward in mid-August (first broods). Second broods started their migration at a younger age and almost a month later than first broods (mid-September). Barn swallows increased body mass and accumulated fat for the autumn migration. In the course of the autumn they seemed to be able to prevent the loss of energy already accumulated, since the proportional overnight mass loss, fat loss and faecal production decreased. Surprisingly, corticosterone, the major energy-regulating hormone in birds, seemed not to be involved in the fuelling process. Previous studies with warblers, sparrows and shorebirds had shown that during migration, the baseline levels of corticosterone were elevated in order to facilitate fuelling. It is possible that for Finnish barn swallows the most important fuelling place is in southern Europe, since northern and eastern populations migrate via the Balkan Peninsula. However, the adrenocortical stress response of Finnish barn swallows in good body condition was lower than that of those in poor body condition. Birds clearly suppressed the response, probably to prevent the catabolic effects of excessive corticosterone levels; birds cannot afford to lose muscle mass before migration. South African barn swallows had high levels of baseline corticosterone, but this may have been associated with the high oxidative damage and biotransformation activity of those birds. Barn swallows in spring and summer had low biotransformation activity and intermediate oxidative stress, which was probably related to breeding. Autumn birds had low biotransformation activity and oxidative stress but high redox enzyme activities in some migration-related enzymes.

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Joukkoliikenteen suosio hiipuu vähitellen, käyttö aste laskee. Tätä ongelmaa lähdimme ratkaisemaan sovelluksen ja pelillistämis menetelmän avulla. Menetelmää hyödyntäen tavoitteena oli luoda sovellus joka koukuttaa käyttäjän sovelluksen käyttöön ja sitä kautta joukkoliikenteen käyttöön. Pyrimme pysäyttämään joukkoliikenteen käyttöasteen laskun tai jopa kääntämään sen kasvuun. Varsinaista tulosta ei tällä työllä saatu, sillä aika ei vain riittänyt sovelluksen testaamiseen käytännössä. Pelillistämis menetelmiä kun tutkii ja vertaa sovellustamme niihin, niin sovelluksellamme on hyvä mahdollisuudet toimia joukkoliikenteen käytön lisäämisen työkaluna.

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Third party logistics, and third party logistics providers and the services they offer have grown substantially in the last twenty years. Even though there has been extensive research on third party logistics providers, and regular industry reviews within the logistics industry, a closer research in the area of partner selection and network models in the third party logistics industry is missing. The perspective taken in this study was of expanding the network research into logistics service providers as the focal firm in the network. The purpose of the study is to analyze partnerships and networks in the third party logistics industry in order to define how networks are utilized in third party logistics markets, what have been the reasons for the partnerships, and whether there are benefits for the third party logistics provider that can be achieved through building networks and partnerships. The theoretical framework of this study was formed based on common theories in studying networks and partnerships in accordance with models of horizontal and vertical partnerships. The theories applied to the framework and context of this study included the strategic network view and the resource-based view. Applying these two network theories to the position and networks of third party logistics providers in an industrial supply chain, a theoretical model for analyzing the horizontal and vertical partnerships where the TPL provider is in focus was structured. The empirical analysis of TPL partnerships consisted of a qualitative document analysis of 33 partnership examples involving companies present in the Finnish TPL markets. For the research, existing documents providing secondary data on types of partnerships, reasons for the partnerships, and outcomes of the partnerships were searched from available online sources. Findings of the study revealed that third party logistics providers are evident in horizontal and vertical interactions varying in geographical coverage and the depth and nature of the relationship. Partnership decisions were found to be made on resource based reasons, as well as from strategic aspects. The discovered results of the partnerships in this study included cost reduction and effectiveness in the partnerships for improving existing services. In addition in partnerships created for innovative service extension, differentiation, and creation of additional value were discovered to have emerged as results of the cooperation. It can be concluded that benefits and competitive advantage can be created through building partnerships in order to expand service offering and seeking synergies.

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Kirjallisuusarvostelu

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Kirjallisuusarvostelu

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Kirjallisuusarvostelu