Performance of distance sampling estimators: a simulation study for designs based on footpaths

ABSTRACT

Recently, distance sampling emerged as an advantageous technique to estimate the abundance of many animal populations, including ungulates. Its basic design involves the random selection of several samplers (transects or points) within the population range, and a Horvitz–Thompson-like estimator is then applied to estimate the population abundance while correcting for animal detectability. Ensuring even coverage probability is essential for subsequent inference on the population size, but it may not be achievable because of limited access to parts of the population range. Moreover, in several environmental conditions, a random selection of samplers may induce very high survey costs because it does not minimize the displacement time of the observer(s) between successive samplers. We thus tested whether two-stage designs – based on the random selection of points and then of nearby samplers – could be more cost-effective, for a given population size and when even area coverage cannot be guaranteed. Here, we further extend our analyses to assess the performance of two-stage designs under varying animal densities.     

Lottery- and survey-based risk attitudes linked through a multichoice elicitation task

We analyze the results from three different risk attitude elicitation methods. First, the broadly used test by Holt and Laury (2002), HL, second, the lottery-panel task by Sabater-Grande and Georgantzis (2002), SG, and third, responses to a survey question on self-assessment of general attitude towards risk (Dohmen et al. 2011). The first and the second task are implemented with real monetary incentives, while the third concerns all domains in life in general. Like in previous studies, the correlation of decisions across tasks is low and usually statistically non-significant. However, when we consider only subjects whose behavior across the panels of the SG task is compatible with constant relative risk aversion (CRRA), the correlation between HL and self-assessed risk attitude becomes significant. Furthermore, the correlation between HL and SG also increases for CRRA-compatible subjects, although it remains statistically non-significant.     

Beyond economic insecurity and cultural backlash: Economic nationalism and the rise of the far right

Far‐right parties gain in electoral support across the globe. Studies describe this phenomenon either as a cultural backlash or as a reaction to growing economic inequality. The economic inequality perspective suggests that the transforming workforce in post‐industrial societies gives rise to economic insecurity among those who feel left behind. In contrast, the cultural backlash thesis argues that the increasing support for far‐right parties represents a rejection of values such as cosmopolitanism and multiculturalism. More recent scholarship sought to show how economic and cultural factors combined increase the support for the far right. Most of these studies investigate public opinion polls, voting behaviour, and voters´ socio‐economic contexts. This paper reviews these studies and argues that the way in which far‐right political parties construct an interconnection of economic and cultural ideas in discourse is largely neglected in the existing body of literature. The paper concludes that the concept of economic nationalism captures how these two components are intertwined; economic nationalist discourse in far‐right political manifestos and speeches provides a more complete comprehension how public opinion is being shaped. This contribution offers a starting point for future studies to examine how cultural values, such as nationalism, reconstruct and influence articulation of economic policy.     

Supply chain capabilities for customisation: a case study

Abstract

Despite the growing interest in supply chain management (SCM), there is little literature on knowledge and competences needed to properly configure and manage a supply chain. There are some interesting methodologies to map the knowledge and the techniques used in the supply chain of a sector and transfer them in another sector. This is particularly important when cross-fertilisation of practices can support sectors facing global competition as the footwear industry. New business opportunities can in fact be exploited addressing the needs of specific target groups searching for customised fashion and healthy shoes. Based on literature review and case study analysis of twelve companies within the fashion and orthopaedic footwear supply networks, this work compares the relevant processes and the distinctive capabilities necessary in managing supply networks to implement customisation, identifying and highlighting the interchangeable best practices that could serve as a new common knowledge base to be shared by the two sectors.     

Women's working conditions in hospital cleaning: a case study

Hospital cleaning work, as health care work, is mainly performed by women all over Europe. Hospital cleaning activities represent a poorly studied sector although very important also for patient's health. We applied the Method of Organizational Congruencies to study cleaning work in three typical hospital units (Emergency Room, Haematology, General Medicine) of a roman University hospital where 198 women cleaners work. We analyzed the 731 technical actions performed in the three shifts and the related Organizational Constraints (OC). Working outsourcing, no occupational risks training, washing personal equipment at home, standing, long walking, early morning and night shift in emergency room, high monotony (>10 actions per hour) contact with biological and chemicals materials, risk conditions of accidents, artificial lights, hot microclimate and working in a cure setting represent the main Organizational Constraints. Differences among the three Units are discussed together with the importance of considering cleaning hospital as a preventive action towards hospital clinical risk.     

Acting Gay: Male Actors Shift the Frequency Components of Their Voices Towards Female Values When Playing Homosexual Characters

The purpose of this study was to investigate whether actors playing homosexual male characters in North-American television shows speak with a feminized voice, thus following longstanding stereotypes that attribute feminine characteristics to male homosexuals. We predicted that when playing homosexual characters, actors would raise the frequency components of their voice towards more stereotypically feminine values. This study compares fundamental frequency (F0) and formant frequencies (F _i ) parameters in the speech of fifteen actors playing homosexual and heterosexual characters in North-American television shows. Our results reveal that the voices of actors playing homosexual male characters are characterized by a raised F0 (corresponding to a higher pitch), and raised formant frequencies (corresponding to a less baritone timbre), approaching values typical of female voices. Besides providing further evidence of the existence of an “effeminacy” stereotype in portraying male homosexuals in the media, these results show that actors perform pitch and vocal tract length adjustments in order to alter their perceived sexual orientation, emphasizing the role of these frequency components in the behavioral expression of gender attributes in the human voice.     

The Role of Support Networks in the Initial Stages of Integration: The Case of West African Newcomers in the Netherlands

This study focuses on the role of support networks in West African migration to the Netherlands. The authors examine the interactions of non‐State support groups with West African newcomers and explore the nature, scope and function of support. What type of support networks do respondents rely on, under which circumstances, and for how long? What is the scope of support? Is it to be taken for granted? What alternatives are there for those left out of the loop? The findings suggest that support is mainly punctual, in response to a specific need, and for a limited period of time. It is not to be taken for granted, as support groups have limited capacities, and protect themselves from excessive demands. They play a significant role in providing assistance to migrants, yet this role should not be overestimated.     

Political Efficacy of Emerging Elites in Post-Socialist Countries: The Impact of Disciplinary Culture and Political Opportunities

Political efficacy is a key determinant of political participation, yet what are the determinants of political efficacy? While the role of demographic and socio-economic factors has been widely studied in this context, less attention has been given to early life socialization and to the aggregate political environment. This paper develops and empirically tests the hypotheses that political efficacy of emerging elites in post-Socialist countries is determined by (1) individuals’ internalized values, which we proxy with the concept of ‘disciplinary culture,’ (2) the structure of political opportunities, measured by the degree of a country’s political competitiveness and openness, and (3) the historical legacy of socialism. Our study contributes to a scarce literature on the topic of political efficacy in post-Socialist countries and to an even more scant literature on political efficacy of young people and emerging elites.     

The Internetization of International Migration

The Internet has revolutionized our economies, societies, and everyday lives. Many social phenomena are no longer the same as they were in the pre‐Internet era: they have been “Internetized.” We define the Internetization of international migration, and we investigate it by exploring the links between the Internet and migration outcomes all along the migration path, from migration intentions to actual migration. Our analyses leverage a number of sources, both at the micro‐ and the macro‐level, including the Gallup World Poll, the Arab Barometer, data from the International Telecommunication Union, the Italian population register, and unique register data from a migrant reception center in Southern Italy. We also distinguish between economic migrants—those who leave their country of origin with the aim of seeking better economic opportunities elsewhere—and political migrants—those who are forced to leave their countries of origin for political or conflict‐related reasons. Our findings point to a consistently positive relationship between the diffusion of the Internet, migration intentions, and migration behaviors, supporting the idea that the Internet is not necessarily a driving force of migration per se, but rather an enabling “supportive agent.” These associations are particularly relevant for economic migrants, at least for migration intentions. Further analyses underscore the importance of the Internet in providing a key informational channel which helps to define clearer migration trajectories.     

Mobile moratorium? The case of young people undertaking international internships

ABSTRACT

This article explores a significant yet curiously understudied form of transnational mobility as practiced by the highly qualified in Europe, namely the international internship. We argue that an international internship can be an ambivalent stage within youth transitions. While possibly providing a potential point of entry into a ‘dream’ career path, the economic and emotional costs of such undertakings also need to be accounted for, including an offsetting of professional stability and deferred rather than accelerated labour market entry. At the same time, international internships have the appearance of a response to a need for personal development and exploration. Taking on board these perspectives, we suggest that the international internship be considered a form of ‘mobile moratorium’, expanding on the possibilities associated with this conceptualisation. For young people in the European Union, this type of exchange also provides a means to engage in intra-European circulation while simultaneously pursuing personalized success. We investigate this proposition through analysis of data collected via an online survey, providing illustrations of what the international internship experience means for professional development and personal exploration.