University of Turku

About: University of Turku is a education organization based out in Turku, Finland. It is known for research contribution in the topics: Population & Galaxy. The organization has 16296 authors who have published 45124 publications receiving 1505428 citations. The organization is also known as: Turun yliopisto & Åbo universitet.

A process theory of relationship ending

Abstract: This research is about the ending of business relationships: what that is, why it happens, and how an extant relationship dissolves. Ending of buyer‐seller relationships has very recently attracted increased research attention. This article adds to the existing knowledge by developing a process model to understand, in particular, how dissolution advances in a professional service context. The model aims to attend the major shortcomings of existing research and distinguishes three conceptual categories: the type of relationship and its ending, the factors that influence the process, and the ending process per se. It is concluded that the ending process is always both temporally and contextually embedded and to a significant degree actor‐driven; a picture of idiosyncrasy rather than deterministic development. The article ends by discussing managerial implications and making suggestions for future research.

Prospective relations among victimization, rejection, friendlessness, and children's self- and peer-perceptions.

Abstract: This study investigated the prospective links between three forms of peer adversities (ie, victimization, rejection, and lack of reciprocated friendships) and children's perceptions of themselves and of their peers The sample consisted of 212 children (107 boys and 105 girls, 11-13 years) recruited from four primary schools and followed up for a period of one year The results showed that a negative self-perception was a risk factor for the development of all forms of peer adversities Of the three forms of peer adversities assessed, victimization and rejection had an influence on children's peer perceptions None of the peer adversities predicted changes in self-perceptions The results partially support a transactional model between children and their environments

Spectral energy distributions of a large sample of BL Lacertae objects

Abstract: We have collected a large amount of multifrequency data for the objects in the Metsahovi Radio Observatory BL Lacertae sample and computed their spectral energy distributions (SED) in the logν - log νF - representation. This is the first time the SEDs of BL Lacs have been studied with a sample of over 300 objects. The synchrotron components of the SEDs were fitted with a parabolic function to determine the synchr otron peak frequency,νpeak. We checked the dependence between luminosities at several frequency bands and synchrotron peak frequency to test the blazar sequence scenario, which states that the source luminosity depends on the location of the synchrotron peak. We also calculated broad band spectral indices and plotted them against each other andνpeak. The range ofνpeak in our study was considerably extended compared to previous studies. There were 22 objects for which logνpeak >19. The data shows that at 5 GHz, 37 GHz and 5500 A there is negative correlation between luminosity andνpeak, whereas in X-rays the correlation turns slightly positive. There is no significant correlation between source luminosi ty at syn- chrotron peak andνpeak. Several low radio luminosity-low energy peaked BL Lacs were found. The negative correlation between broad band spectral indices andνpeak is also significant, although there is substantial scatter. Therefore we find that neither αrx norαro can be used to determine the synchrotron peak of BL Lacs. On the grounds of our results we conclude that the blazar sequence scenario is not valid. In all our results the BL Lac population is continuous with no hint of the bimodality of the first BL Lac samples.

Understanding perceived risks in mobile payment acceptance

Abstract: Purpose – The purpose of this paper is to examine and quantify how various uncertainties result in different perceived risk dimensions that hinder mobile payment (m-payment) acceptance. Design/methodology/approach – An uncertainty-risk-value framework was proposed based on perceived risk theory, prospect theory, and perceived value theory. Structural equation modeling method was used to test the research model. Findings – Perceived information asymmetry, perceived technology uncertainty, perceived regulatory uncertainty, and perceived service intangibility are confirmed as the main determinants of perceived risk, while perceived performance risk, perceived financial risk, and perceived privacy risk were found to have strong negative effects on perceived value and acceptance intention. Practical implications – The findings may help businesses and policy makers better understand the sources of perceived risk and help support the development of appropriate strategies to mitigate the risk concerns consumers h...