Search results for "Aho"
showing 10 items of 366 documents
Kääväkkäiden kannanvaihtelu pirstoutuneissa vanhoissa metsissä
2019
Luonnon monimuotoisuus on tärkeää ekosysteemien ja ekosysteemipalveluiden säilymiselle, mutta maankäyttö uhkaa monien lajien selviämistä. Yksi suurimmista uhista monimuotoisuudelle on elinympäristöjen pirstoutuminen. Kääväkkäät ovat tärkeitä boreaalisten metsien puuaineksen hajottajia, mutta niiden kannanvaihteluista pirstoutuneessa metsämaisemassa tiedetään vähän. Tämän tutkielman tavoitteena oli selvittää kääväkkäiden kannanvaihteluita eristyneillä kuusivaltaisilla vanhan metsän laikuilla. Tutkimuksessa tarkastelin sekä metsälaikkujen että maisematason ominaisuuksien vaikutusta kääväkkäisiin. Keräsin aineiston Kuhmosta 16 metsälaikulta, joilla oli tehty kääväkäskartoitus vuonna 1997. Tutk…
Kääpien kannalta ennallistamalla tuotettu lahopuu ei täysin vastaa luontaista lahopuuta
2014
Species richness of polypores can be increased by supplementing dead wood resource into a boreal forest landscape
2019
1. To prevent local species extinction and to counteract population declines, we must ensure species have access to resources they require for life. This can be done through ecological restoration where previously depleted resources are reintroduced. If the restoration is conducted as a one-off action in a large area, it resembles a natural resource pulse, which should lead to increased abundance of individuals, accompanied possibly by increased species richness. Species–energy relationship and underlying theory enable predictions about how different features of resource pulses affect species richness. 2. We conducted a large-scale, controlled, randomized and replicated field experiment to …
Forest act habitats : Finnish woodland key habitats amid the intensive forestry
2014
Dead wood and fungi : detection, diversity and conservation in boreal forests
2018
Dead wood and associated fungal communities are a crucial part of boreal forest ecosystems, and severely affected and threatened by human actions like commercial timber harvesting. Despite their importance for forest functioning, most wood-inhabiting fungal species, especially those producing small fruit bodies, are still ecologically and taxonomically poorly known. In addition, studies on dead wood profiles have neglected fine woody debris. This thesis includes detailed investigations of fruiting phenology of different morphological groups and complete dead wood profile of one semi-natural boreal forest. In addition, the diversity patterns of wood-inhabiting fungal communities according fo…
Burnout, work engagement and workaholism among highly educated employees: Profiles, antecedents and outcomes
2014
The present study examined the longitudinal profiles of burnout, engagement and workaholism among highly educated employees. First, the latent profile modeling indicated two latent classes: Engaged and Exhausted-Workaholic. Second, the results revealed that employees with the Engaged profile experienced high levels of energy and dedication, whereas employees with the Exhausted-Workaholic profile experienced exhaustion, cynicism and workaholism. Social pessimism in the transition from high education to work predicted poor subjective well-being at work. Further, workaholism decreased during the career among members of the Exhausted-Workaholic profile suggesting positive direction during caree…
ETL procesu risinājumi lielo datu gadījumos
2016
Lielo datu milzīgais apjoms un tā straujais pieaugums liek meklēt jaunas un attīstīt esošās tehnoloģijas datu apstrādē, jo tradicionālie ETL jeb datu izgūšanas, transformācijas un ielādes rīki nespēj apstrādāt tādu apjomu. Darba mērķis ir izpētīt ETL procesu galvenās iezīmes un pieejamos risinājumus lielo datu apstrādē. Rezultātā tika aplūkoti galvenie izaicinājumi un sarežģījumi lielo datu apstrādē un apskatīti risinājumi ETL procesu veikšanai liela apjoma datiem. Darba izstrādes laikā tika veikta lietojuma gadījuma realizācija, lai novērtētu tradicionālā ETL rīka Pentaho Kettle iespējas un piemērotību liela apjoma datu apstrādei.
Autorizācija un autentifikācija testa vides aizmugursistēmai
2020
Bakalaura darba “Autorizācija un autentifikācija testa vides aizmugursistēmai” mērķis ir analizēt dažādus lietu interneta protokolus un, kad tiks atrasts atbilstošākais balstoties uz testa gultnes prasībām, novērtēt autorizācijas un autentifikācijas metodes. Praktiskās daļas testi tika veikti uz simulētas testa vides, izmantojot MQTT protokolu un Mosquitto un Paho MQTT implementācijas. Papildus testa programmatūrai, tika izveidots Paho abonēšanas klients, kā arī sertifikātu un klientu autorizācijas datu ģenerēšanas palīgprogramma, izmantojot Python programmēšanas valodu. Analizējot iegūtos datus, tika konstatēts, ka testa gultnes autorizācijai un autentifikācijai labākais risinājums ir izma…
ICO Crowdfunding: Incentives, Pricing Strategy, Token Strategy and Crowd Involvement
2020
AbstractBlockchain technologies provide means to develop services that are secure, transparent and efficient by nature. Unsurprisingly, the emerging business opportunities has gained a lot of interest that is realized in form of successful Initial Coin Offerings (ICOs) that are able to raise billions of USD through crowdfunding campaign. In this exploratory research we study 91 ICOs through content analysis in order to investigate the special characteristics of ICO crowdfunding as business models towards the possible investors. We found that ICOs can be described through (1) the model for providing incentives for investment, (2) the pricing strategy, (3) the token strategy and (4) the activ…
What Key Aspects Do ICOs Reveal About Their Businesses?
2020
AbstractBlockchain technologies disrupt industries by enabling decentralized and transactional data sharing across a network of untrusted participants, among others. Initial Coin Offerings (ICOs) are a novel form of crowdfunding through which hundreds of blockchain-enabled businesses manage to raise billions of dollars in total only in United States. However, there is a lack of understanding of the ICO phenomenon especially related to the business aspects. In this paper, we describe the results of an exploratory study of 91 ICOs and identify the key business model elements that ICOs reveal in their websites and whitepapers. Furthermore, we also note the immaturity and lack of transparency o…