Tuotekehitysprosessin uudistaminen pk-yrityksessä

Tämän tutkielman tarkoituksena oli uudistaa pk-yrityksen tuotekehitysprosessia vastaamaan paremmin kumppanuussuhteen vaatimuksia. Tutkielmassa perehdyttiin tuotekehitysorganisaatioihin, kumppanuussuhteisiin ja verkostoihin ja luotiin pk-yritykselle hyvin soveltuva tuotekehitysprosessimalli. Työn aikana perehdyttiin tuotekehitysprosessien erilaisiin malleihin. Monesti tuotekehitysprosessit koostuvat peräkkäisistä vaiheista ja tarkastuksista. Yleisesti käytössä olevat tuotekehitysmallit perustuvat jo 60-luvulla kehitettyihin perusajatuksiin, joista on kehitetty nykyiseen liiketoimintaympäristöön paremmin sopivat versiot. Malleista yksi laajalti käytetty on niin sanottu Stage-Gate -malli. Tässä työssä tuotekehitysprosessia kehitettiin Stage-Gate -mallin pohjalta ja yritykselle luotiin uusi, kumppanussuhteeseen hyvin sopiva malli, missä myös asiakkaalla ja toimittajilla on oma rooli. Uutta prosessimallia kokeiltiin yhden tuotteen kehitysprojektissa yhdessä eri sidosryhmien kanssa.fi=Opinnäytetyö kokotekstinä PDF-muodossa.|en=Thesis fulltext in PDF format.|sv=Lärdomsprov tillgängligt som fulltext i PDF-format

Terpenes and fungal biomass in the nest mounds of Formica aquilonia wood ants

AbstractNest mounds of wood ants of the Formica rufa group are built using conifer needles, small branches, other plant materials and soil. Conifer needles contain several mono and sesquiterpenes. Thus, wood ant nests may act as terpene hotspots in conifer forest soils. Some of the terpenes show antifungal activity and may thus cause small-scale heterogeneity in fungal biomass. We compared terpene concentrations and fungal biomass (ergosterol concentration) of nest material of the wood ant Formica aquilonia from the top, core and basement of 14 nest mounds in eastern Finland. Overall, α-pinene, camphene, sabinene, β-pinene, myrcene, limonene, camphor and longifolene were detected the most and were commonly present in all the studied layers. We found that terpene concentrations differed between the sampled nest material layers, being generally highest in the core of the nest and lowest at the basement of the nest. There was no association between the terpene concentration and material moisture. Fungal biomass was highest in the top layer, intermediate in core and lowest in basement; however, it was not negatively associated with terpene concentrations. Fungal biomass in nest mounds was positively associated with moisture and alkalinity. Nest mounds of Formica rufa group wood ants are complex structures with different chemical and microbial properties among its layers.</p

Document retrieval on repetitive string collections

Most of the fastest-growing string collections today are repetitive, that is, most of the constituent documents are similar to many others. As these collections keep growing, a key approach to handling them is to exploit their repetitiveness, which can reduce their space usage by orders of magnitude. We study the problem of indexing repetitive string collections in order to perform efficient document retrieval operations on them. Document retrieval problems are routinely solved by search engines on large natural language collections, but the techniques are less developed on generic string collections. The case of repetitive string collections is even less understood, and there are very few existing solutions. We develop two novel ideas, interleaved LCPs and precomputed document lists, that yield highly compressed indexes solving the problem of document listing (find all the documents where a string appears), top-k document retrieval (find the k documents where a string appears most often), and document counting (count the number of documents where a string appears). We also show that a classical data structure supporting the latter query becomes highly compressible on repetitive data. Finally, we show how the tools we developed can be combined to solve ranked conjunctive and disjunctive multi-term queries under the simple model of relevance. We thoroughly evaluate the resulting techniques in various real-life repetitiveness scenarios, and recommend the best choices for each case.Peer reviewe

Lääke75+ auttaa iäkkään potilaan kivun hoidossa

Lääkkeen ja sen annoksen valinnassa on otettava huomioon, että ikääntynyt elimistö on herkkä kipulääkkeiden haitallisille vaikutuksille. Lääke75+ on tietokanta, joka tiivistää tärkeimmät iäkkäillä potilailla huomioitavat seikat lääkeainekohtaisesti.</p