Cryptographic protocols for Vickrey auctions

Although the sealed second-price or Vickrey auctions have some nice theoretical properties, they are fairly seldom utilized in practice. It has been suggested that they are vulnerable to bid-taker cheating and that the revelation of bids after the bidding makes the bidders reluctant to reveal their true valuations. We outline procedures based on modern mathematical cryptography that are instrumental in avoiding some of these difficulties and thereby will improve the properties of the Vickrey auctions.     

BAYESIAN MODEL SELECTION AND FORECASTING IN NONCAUSAL AUTOREGRESSIVE MODELS

In this paper, we propose a Bayesian estimation and forecasting procedure for noncausal autoregressive (AR) models. Specifically, we derive the joint posterior density of the past and future errors and the parameters, yielding predictive densities as a by‐product. We show that the posterior model probabilities provide a convenient model selection criterion in discriminating between alternative causal and noncausal specifications. As an empirical application, we consider US inflation. The posterior probability of noncausality is found to be high—over 98%. Furthermore, the purely noncausal specifications yield more accurate inflation forecasts than alternative causal and noncausal AR models. Copyright © 2010 John Wiley & Sons, Ltd.     

Entrepreneurship training for new ventures

Several studies in the field of international entrepreneurship have indicated the inadequacy of public policy support for new ventures and called for more tailored training programs. This paper introduces a training program created for new ventures in Central Finland and analyzes its benefits and shortcomings using a qualitative case study. The findings reveal that the training program provided useful knowledge on how to develop a business further and how to make it understandable and attractive to a funder. However, the findings also indicate that there is a need for cultural adaptation: the training program developed originally for U.S. new ventures was not fully adapted for the needs of Finnish entrepreneurs. The program mainly focused on risk taking, raising funds from capital markets in the U.S., and entering into the U.S market soon after the establishment. This was in contrast to the Finnish entrepreneurs’ strategies: they preferred to grow their business in a more controlled and profitable manner. Thus, although knowledge-intensive new ventures operate in global environments, the training provided for them should take into account the cultural differences and the local way of doing business.     

How retail entrepreneurs perceive the link between surveillance,feeling of security,and competitiveness of the retail store? A structural model approach

This study seeks to create a comprehensive understanding of the ways in which retail entrepreneurs perceive the link between surveillance and customers’ and employees’ sense of security at the store level. This study also analyzes the link between customers’ and employees’ sense of the security and store's competitiveness from the viewpoint of retail entrepreneurs. The present study utilizes elements of Crime Prevention through Environmental Design (CPTED) in its theoretical approach. The population for the study consisted of 946 grocery store K-retail entrepreneurs. The data collection was carried out through an Internet survey in February and March 2009. A total of 161 grocery store retailers filled in the questionnaire, yielding a response rate of 17%. Data were analyzed using structural equation modeling (SEM). The study revealed that formal surveillance has a negative impact on customers’ feelings of security from the retailers’ point of view. In contrast to formal surveillance, informal surveillance had positive impacts on customers’ and employees’ feelings of security. Retail entrepreneurs perceived that both customers’ and employees’ feeling of security had a positive impact on the store's competitiveness.     

Suppliers' roles in category management: A study of supplier–retailer relationships in Finland and Sweden

The purpose of this paper is to analyze suppliers' roles in category management (CM) in the context of Finnish and Swedish supplier–retailer relationships. Using data from a survey of a sample of Finnish and Swedish suppliers, the study shows that the concept of CM is well known among both Finnish and Swedish suppliers, and that most of them have experience of CM as a key operational business process. The study also shows that, in general, larger suppliers in both Finland and Sweden have a relatively strong role in CM collaboration, whereas smaller suppliers (especially in Finland) are more likely to have a lesser role in CM collaboration. Suppliers with a strong role in CM collaboration are generally more capable of influencing individual CM tactics than suppliers with an equal role to competitors or those with no role (both in Finland and in Sweden). The study also finds that the effects of CM are perceived more positively among suppliers who have influence in decision-making regarding CM collaboration than among those who have no role in such decision-making. However, the opinions of suppliers who have no role in CM collaboration are neutral, rather than being especially negative. Qualitative studies, including face-to-face discussions with managers representing manufacturers who are more or less excluded from CM collaboration, might provide a more thorough understanding of CM from their perspective.     

School and family environments promote adolescents' financial confidence: Indirect paths to financial literacy skills in Finnish PISA 2018

This study investigates the associations of adolescents' financial socialization factors—financial education in school and families—with financial confidence (i.e., confidence in using financial and digital financial services). In addition, we examine how financial socialization factors indirectly relate to financial literacy skills through financial confidence and the role of demographic factors (adolescent gender, grade level, parental education, family wealth) on financial socialization, financial confidence, and financial literacy scores. We used data on the 4328 Finnish 15-year-olds participating in the 2018 Programme for International Student Assessment (PISA). We measured financial literacy by cognitive test items and assessed financial socialization and financial confidence by adolescent questionnaires. First, the results showed that financial education in school positively predicted adolescents' confidence in using financial and digital financial services. Second, financial education at schools and in families indirectly predicted students' financial literacy through confidence in using digital financial services. Third, older adolescents were more exposed to financial education at school and in families, whereas adolescents from wealthier families and girls (vs. boys) were exposed to a more frequent discussion of financial matters with parents at home. Furthermore, the boys were more confident in using financial services than the girls, although the financial literacy score did not differ by gender; older adolescents were more confident in using financial services and achieved better financial literacy than younger ones. Finally, higher parental education in the family related to higher financial literacy but not to higher financial confidence, whereas family wealth was related to higher financial confidence but not financial literacy.     

Social capital in relation to the foreign market entry and post-entry operations of family SMEs

Scholars in the discipline of international entrepreneurship have mainly studied rapidly internationalizing firms. However, the majority of entrepreneurial firms are family-owned businesses (85% of all firms in the EU and the USA). Research on family business has focused on the importance of bonding social capital whereas, despite its importance, bridging social capital has not so far attracted much attention. It has been argued that bridging social capital plays an important role in firms’ internationalization processes. The purpose of this article is to examine the role of bridging social capital in the initial entry and post-entry operations of eight family SMEs with regard to the French market. We found that in foreign market entry social capital generally had a serendipity role, based on weak and intermediary relationships. In the post-entry situation, the role of strong and formal ties emerged strongly, and social capital most commonly took on efficacy or liability roles. Thus, it seems that the social capital of family entrepreneurs is limited to their strong bonding social capital, and perhaps to their strong national social capital. However, when such firms start to internationalize, they have to find new networks to gain the bridging social capital that will enable foreign operations. It seems that having a limited number of international ties drives family SMEs to search for relevant contacts at international trade exhibitions and trade fairs.     

Features of the Z-scoring method in graphical two-dimensional web surveys: the case of ZEF

Research in the human and behavioral sciences has long been burdened by a methodological distinction between two categories of research: that which measures and produces facts and that which understands and interprets phenomena. However all interpretation of numbers requires that results be viewed in relative terms and there are no other means for this than comparison. The Z-scoring method, that is to say standardization, in web survey ZEF, emphasizes relative traits of survey answering. Questions in ZEF are illustrated in graphical two-dimensional chart where respondents are able to compare their answers at the moment of answering process. This trait of answering emphasizes the relationship of questions more than an absolute values on the scales of two dimensions. The Z-scoring method that is used in ZEF for handle results is based for same assumption: The respondents are compared questions and are formulated their answers through comparison. The significance of differences between groups cannot be measured directly: in some content areas, even small differences may be important, while in others changes of even several per cent are not significant. Standardization makes visible how different respondents and groups value things, that is, construct an order for them, using the dimensions given.     

International Opportunity Recognition among Small and Medium‐Sized Family Firms*

Current research in the field of entrepreneurship emphasizes the importance of opportunity recognition as a key element in the entrepreneurial process. It has been recognized that network ties, activeness and alertness, and prior knowledge are related to how entrepreneurs recognize new opportunities. However, it is unclear how important these factors are when a firm explores opportunities for entry into a foreign market. In this exploratory case study, covering the international opportunity recognition of eight family‐owned small and medium‐sized enterprises (SMEs), we found that the firms in question mainly recognized international opportunities by establishing new formal ties rather than using existing informal or family ties. The findings also indicated that due to the small size and the flexibility of the management team in family SMEs, these firms were able to react quickly to new international opportunities. However, there was no direct relationship between the prior knowledge of the firms and their international opportunity recognition. In addition, we found that trade exhibitions formed the primary context for the international opportunity recognition of the SMEs in this study. These findings motivate a set of five propositions that may lead to further studies on this topic.