Search results for "paperi"

Stability of moving viscoelastic panels interacting with surrounding fluid

2012

We study a model describing the out-of-plane vibrations of an axially moving viscoelastic panel submerged in flowing fluid. The panel is assumed to travel at a constant velocity between two fixed supports, and it is modeled as a flat panel made of viscoelastic Kelvin-Voigt material. The fluid flow is modeled with the help of the added mass coefficients. The resulting dynamic equation is a partial differential equation of fifth order in space. Five boundary conditions are set for the studied problem. The behavior of the panel is analyzed with the help of its eigenvalues (eigenfrequencies). These characteristics are studied with respect to the velocity of the panel. In our study, we have incl…

Nordic stock market integration

2001

Technological Transformation in the Global Pulp and Paper Industry : Concluding Remarks

2018

The volume has provided us with illustrative, well-documented case studies of technological transformation in the global pulp and paper industry. The research has focused on the roles played by the availability of technology, knowledge, investments, and raw materials on the one hand and demand characteristics on the other, within local, regional, national and transnational organisational frameworks. It has dealt with the relationships between technology transfer, technology leadership, raw material dependence, and product variety on a global scale. The investigation has followed the tradition of in-depth and rich historical descriptions based on primary sources and secondary literature. The…

Technological Transformation in the Global Pulp and Paper Industry : Introduction

2018

At a high level of abstraction, the evolution of any industry is a function of changes in product market demand, availability and supply of capital, energy resources, raw materials knowledge and technology, the surrounding institutional framework and organisational solutions. New technological innovations emerge because of changes in product market demand or institutional framework that encourage entrepreneurs and firms to take advantage of new business opportunities. This contributed volume provides illustrative, well documented case studies of technological transformation in the global pulp and paper industry from the inception of mechanical papermaking in early nineteenth century Europe …

"Tulolähteen tulee pulputa kirkkaana" : tehdasyhteisö Walkiakosken tehtaan johdon patriarkaalinen suhde työläisiin Rudolf Waldenin aikakaudella 1924-…

2003

The Affordances of Reading/Writing on Paper and Digitally in Finland

2014

The aim of this study is to investigate the impact of digital technologies on reading and writing in Finland. The perceived affordances of reading and writing on paper and digitally are compared by analysing written essays collected from 25 communication students in 2013. Research design is replicated from a study of Fortunati and Vincent that concerns Italian students. Results show that Finnish students perceive more positive than negative affordances regarding reading on paper, while reading on screen attracts fewer virtues. In this respect, results are in line with the Italian study. Unlike in Italy, students in Finland value writing on a keyboard especially because it enables editing th…

Optimal portfolio allocation with real assets : a Finnish perspective

2017

Alternative market assets, i.e. those which are not part of the ''traditional'' financial assets, have become increasingly popular globally during the last decade. The purpose of this study is to examine the potential benefits of including real investment assets, specifically timberland and real estate holdings, for a investor investing to either domestic or international markets. Specifically the questions to be asked are: Do Finnish real investment assets offer diversification benefits in respect of increased risk-adjusted returns? What are the optimal asset allocations? The analyzed time-series for alternative investments represent quarterly total returns of average Finnish timberland an…

Biogas production from meat and pulp and paper industry by-products

2014

Aerobic composting and anaerobic digestion of pulp and paper mill sludges

1997

The feasibility of aerobic vessel composting and anaerobic digestion for the treatment of pulp and paper mill sludges were studied. The composting studies made use of primary and secondary sludge from a de-inking and paper mill. In six parallely aerated 500 1 vessels with various carbon : nitrogen (C:N) -ratios, the most optimal performance was obtained with C:N -ratios of c. 22–35, while higher and lower ratios delayed the temperature increase. With the optimal ratios, the thermophilic stage was reached within 36 h, and the stage lasted for about seven days. In the scale-up study (18 m3 compost vessel), the thermophilic stage was reached within 24 h. An effective dehydratation of the mass …

Luottoriskin osatekijät osakkeen hinnanmuutoksen selittäjinä

2016

Tutkimuksen tavoite oli tutkia, onko luottoriskin osatekijöillä vaikutusta Helsingin pörs-sissä listattujen osakkeiden hintojen muutoksiin. Tutkimuksessa käytettiin tunnuslukuja asiantuntijaorganisaatiosta sekä konkurssiennustamisen tunnuslukuja aikaisemmasta tutkimuksesta (Laitinen, 1993), sillä konkurssiennustaminen ja maksuongelmatilanteet liittyvät läheisesti luottoriskiin. Aineisto koostui 97 Helsingin pörssin yhtiöstä tilikausilta 2011–2015. Aineisto kerättiin FactSet – ohjelmistosta keväällä 2016. Aineiston yrityksiä olivat kaikki sellaiset pörssin yhtiöt, jotka eivät olleet luottolaitoksia ja jonka kaikki tarvittavat tiedot voitiin tulostaa Exceliin. Empiiriseksi menetelmäksi valiko…