Nonparametric semi-supervised classification with application to signal detection in high energy physics

Statistical Methods & Applications - Model-independent searches in particle physics aim at completing our knowledge of the universe by looking for new possible particles not predicted by the...     

The board advisory tasks in small firms and the event of crises

In this article we examine what affects the board of directors’ involvement in the advice to management, with emphasis on the influence of crises on the board advisory tasks performance. Based on a survey of 881 small Norwegian firms, we analyse responses from CEOs in order to determine whether and to what extent the board is actively involved in the governance process during crises through providing advice. The study has two major contributions to board research in general and research of into small firms in particular. The first is the go beyond the “usual suspects” of board size, CEO duality, and board independence when looking for determinants of board involvement in advice. The second contribution is a clearer understanding of board involvement during crises. Our results show that board member diversity becomes particularly important during crises, since this provides the CEO and firm access to a more diverse pool of competences and experiences. We also find that crises moderate the effects of incentive on the board’s involvement in advice. This evidence sheds new light on the determinants of directors’ involvement in board tasks, suggesting that directors’ incentive to perform certain board tasks vary according to the contingent situation the firm is experiencing.     

SMEs and Marketing: A Systematic Literature Review

This paper presents a systematic review of recent academic literature analysing the role, organization and management of marketing activities in small and medium‐sized enterprises (SMEs). To this end, 310 articles published between 2006 and 2015 in 69 main journals devoted to small firms/entrepreneurship and management/marketing fields were analysed. This review shows that SMEs’ marketing has received great attention in both management and marketing literature in recent years. Findings reveal, on the one hand, the emerging role of networks and information and communication technologies in marketing behaviour by SMEs, and on the other hand a research gap in terms of specific marketing practices. Entrepreneurial marketing has been used as the main conceptual framework in reviewed studies, even if findings overall still point out a distance between the theoretical bases of reviewed contributions and the study of SMEs’ marketing behaviour and practices. Therefore, future research on the role of resources, relationships and networks could benefit from the combination of theories developed within the field of entrepreneurship with other approaches such as the resource‐based view, the dynamic capabilities theory and the Industrial Marketing and Purchasing (IMP) framework.     

A bivariate geometric distribution allowing for positive or negative correlation

In this paper, we propose a new bivariate geometric model, derived by linking two univariate geometric distributions through a specific copula function, allowing for positive and negative correlations. Some properties of this joint distribution are presented and discussed, with particular reference to attainable correlations, conditional distributions, reliability concepts, and parameter estimation. A Monte Carlo simulation study empirically evaluates and compares the performance of the proposed estimators in terms of bias and standard error. Finally, in order to demonstrate its usefulness, the model is applied to a real data set.     

When friendship is stronger than prejudice. Role of intergroup friendships among adolescents in two distinct socio-cultural contexts of immigration

Despite the structural characteristics of international migration in most European countries, the persistence of prejudice and negative attitudes towards immigrants represents an unsolved problem that erodes social cohesion. European institutions continue to be concerned about the spread of xenophobia, especially among young generations. This article aims to shed light on the crucial role of intergroup friendships, considered a key factor in reducing the hostility toward immigrant groups. In particular, the aim is to verify the effects of intergroup friendships on prejudice, using data derived from an international survey carried out in France and Italy, two emblematic European countries as regarding the experience of international migration. 1,642 French and Italian adolescents, selected by a rationale choice sample, were involved: multivariate analysis confirmed the hypothesis that adolescents who hold intergroup friendships show lower levels of prejudice. The influence of the intergroup friendships on the decrease of intolerance is evident especially on socioeconomic and security issues while for the identity matters its effects are moderated by the country of residence of the participants. Considering these results, positive contacts among local and immigrant populations are recommended in order to reduce social fragmentation and foster social cohesion.     

A method for work modeling at complex systems: towards applying information systems in family health care units

Work in organizations requires a minimum level of consensus on the understanding of the practices performed. To adopt technological devices to support the activities in environments where work is complex, characterized by the interdependence among a large number of variables, understanding about how work is done not only takes an even greater importance, but also becomes a more difficult task. Therefore, this study aims to present a method for modeling of work in complex systems, which allows improving the knowledge about the way activities are performed where these activities do not simply happen by performing procedures. Uniting techniques of Cognitive Task Analysis with the concept of Work Process, this work seeks to provide a method capable of providing a detailed and accurate vision of how people perform their tasks, in order to apply information systems for supporting work in organizations.     

Objectified conformity: working self-objectification increases conforming behavior*

The present work explores whether self-objectification triggered by doing peculiar work activities would increase people’s conforming behavior. We conducted an experimental study in which participants (N = 140) were asked to perform a high objectifying activity (vs. low objectifying activity vs. baseline condition) simulating a real computer job. Afterwards, their levels of self-objectification and conforming behavior were assessed. Results revealed that participants who performed the high objectifying activity self-objectified (i.e., perceived themselves as lacking human mental states) more than the other conditions and, in turn, conformed more to the judgments of unknown similar others. Crucially, increased self-objectification mediated the effects of the high objectifying activity on enhancing conforming behavior. Theoretical and applied implications of these findings are discussed.     

Self-enforcing family rules,marriage and the (non)neutrality of public intervention

We demonstrate that the notion of a family ‘constitution’ (self-enforcing, renegotiation-proof norm) requiring adults to provide attention for their elderly parents carries over from a world where identical individuals reproduce asexually, to one where individuals differentiated by sex and preferences marry, have children and bargain over the allocation of domestic resources. In this heterogenous world, couples are sorted by their preferences. If a couple’s common preferences satisfy a certain condition, the couple have an interest in instilling those preferences into their children. Policies are generally nonneutral. In particular, wage redistribution may raise, and compulsory education will reduce, the share of the adult population that is governed by family constitutions, and thus the share of the elderly population who receive attention from their children.     

The Failure of External Control on Public Utilities

Although on average the cost of local public services is quite high, the same cannot always be said about their quality. Why is this so? This paper suggests that the answer lies in the failure of external control systems. Specifically, four types of risk have been identified: (1) standardisation that is either lacking or incongruent; (2) inappropriate relationships between controllers and the controlled; (3) cases of erosion and resistance to control; (4) incoherence between control aims and methods, and the skill of controllers. The research method was based partly on an analysis of literature and partly on empirical observation. Initially, a thorough examination of articles on the subject published in the main international journals was carried out. Then empirical research (limited to the Italian situation) was added to support the research hypotheses, and which led to the paper’s conclusions. The results may be significant from two points of view. Firstly, although in recent years financial scandals have been very much in the news (the cases of Enron, Argentine bonds, football club scandals) literature has not yet systematically dealt with control failure. Secondly, the conclusions may be of support to public administration policy-makers or to controllers who need to improve their professionalism and diligence.