Voiko ilmastonmuutoksen torjua äänestämällä?

Kirjallisuusarvostelu

Lintuja ja lintutietoja 240 vuoden takaa

Kirjallisuusarvostelu

Factors Affecting Runnability of Press Forming Equipment

The growth of the food packaging industry has raised more interest in bio-based fibre packing. The use of petroleum based packages is unfriendly to the environment while bio-based is a sustainable option for food packing. In this Master Thesis the aim was to discover how the press forming machineries runnability is affected by parameters of the press and how it also affects formability of paperboard trays. Familiarisation of the working operation parameters was done with the KAMA ST 75 flat-bed die cutting machine and the VP3-70 mould press. Some small test runs of moulding trays where done to get acquainted to the adjustment parameters of the machines. Literature study was done on how paperboards physical properties react to the forces applied during press forming. The study of what kind of defects to the paperboard tray might occur during forming process and the causes for these defects. Also how the parameters of the press forming machine affects formability of the tray. Maintenance procedures was done to the press forming machine to enhance the reliably of production process. Tool alignment measurement was done to determine proper alignment. Laboratory test of the physical properties of the test material was done to find any connection to how the test material performs in press forming. An evaluation criterion was made to evaluate the dimensions and defects of the tray. From the test result a conclusion can be drawn on how the parameters of the press forming process affect the paperboard material. Based on the results the adjustment the parameters of moulding machines to the mechanical properties of paperboard it is possible to produce high quality fibre passed trays for the food packaging industry.

Corporate green image communication through public disclosures and social media

Today, companies need to mind the environment in all their actions. Policies, regulations and growing pressure from environmentally conscious public are driving corporations to invest increasingly in their green images. Communication plays a key role in forming and maintaining that image. This thesis explores how six selected companies communicate about their environmental efforts and activities, and its linkage to their green images, in annual and sustainability reports and in Facebook. The companies come from the U.S. and Europe and operate in three different industries: ICT, oil and gas, and aerospace & defense. Qualitative and quantitative content analyses are conducted to examine 36 reports and 121 Facebook messages, collected from the period of 2010-2014, and from 2005 for comparison. The results show that although the quality and quantity of environmental disclosure is increasing, there is still room for improvement. Overall, disclosure in the ICT sector is on the highest level. The European companies disclose more and on average have stronger green images than the American ones. Emissions and ways to reduce them is by far the most covered topic in both continents and in all three industry sectors. The messages in Facebook are closer to advertising, and overall the platform is utilized surprisingly little.

Människor som jag känt: personliga minnen, utdrag ur bref och anteckningar af Jac. Ahrenberg

Kannet painanut: Helsingfors : F. Tilgmanns bok- och stentryckeri, 1904.

Comparison of EN & ASME welding and its allied processes standards

This thesis is made in cooperation with Wärtsilä and Sandvik. The main purpose of the thesis is to clarify the best suitable American standards for European standards used in Wärtsilä’s investigation checklist and to make wide and easily readable tables for Wärtsilä and their subcontractors. One of the most important issues is to make clear if the compared American standards are demanding enough for Wärtsilä’s needs. The research is done by comparing EN standards mentioned in Wärtsilä’s investigation checklist to corresponding ASME, AWS, ASNT and ASTM standards. The research shows that there is visible lack of requirements in American standards compared to European ones. Some areas of American standards are more demanding than European standards but in larger scale EN standards are much wider and more demanding than American standards. Because of these reasons, usage of European standards should be recommended for Wärtsilä’s subcontractors to ensure the quality and reliability of production.

Yrityskokoilmiö Euroopan osakemarkkinoilla

Tämän kandidaatintutkielman tarkoituksena on perehtyä yrityskokoanomaliaan ja sen esiintymiseen Euroopan osakemarkkinoilla. Tutkimuksen tavoitteena on myös selvittää, että voidaanko yrityksen markkina-arvoihin perustuvilla sijoitusportfolioilla saavuttaa ylituottoja markkinoilta. Tutkimusaineisto koostuu kolmesta indeksistä, jotka kuvaavat Euroopan 15 merkittävimmän pörssin kuukausittaisia päätösarvoja ajalta 1/2001–1/2015. Anomalian tunnistamiseksi vertaillaan kolmea markkina-arvoon perustuvaa portfoliota erilaisin kuvailevin tunnusluvuin sekä tilastollisin menetelmin. Tutkielmassa kolmea portfolioita analysoidaan myös hyödyntäen menestysmittarina Sharpen lukua. Näiden tutkimusmenetelmien avulla pyritään selvittämään yrityskokoanomalian esiintymistä Euroopan osakemarkkinoilla sekä löytämään vanhoja tutkimustuloksia tukevia johtopäätöksiä ilmiöstä. Tulosten perusteella tutkimusaikavälillä ylivoimaisesti parhaiten pärjäsivät eurooppalaiset markkina-arvoltaan pienimmät yhtiöt. Eurooppalaiset suuret yhtiöt olivat häviäjiä tässä tapauksessa, kuten aikaisemmat tutkimustulokset antoivatkin odottaa. Pienet yhtiöt pärjäsivät parhaiten lähes jokaisella mittarilla: kumulatiivisella tuotolla sekä Sharpen luvun perusteella. Tutkimuksessa vertailtiin myös portfolioiden riskiä volatiliteetilla sekä betalla, jonka perusteella pienet yhtiöt eivät olleet erityisesti riskisempiä kuin vertailuportfoliot tutkimusaikavälillä. Vaikkei millään portfoliolla pystytty saavuttamaan tilastollisesti merkittävää riskikorjattua ylituottoa, pystytään tulosten perusteella antamaan jalansijaa yrityskokoilmiölle muiden mittareiden perusteella.