Estimating stellar-oscillation-related parameters and their uncertainties with the moment method

Summary.  The moment method is a well-known astronomical mode identification technique in asteroseismology which uses a time series of the first three moments of a spectral line to estimate the discrete oscillation mode parameters l and m . The method, in contrast with many other mode identification techniques, also provides estimates of other important continuous parameters such as the inclination angle α and the rotational velocity v _e. We developed a statistical formalism for the moment method based on so-called generalized estimating equations. This formalism allows an estimation of the uncertainty of the continuous parameters, taking into account that the different moments of a line profile are correlated and that the uncertainty of the observed moments also depends on the model parameters. Furthermore, we set up a procedure to take into account the mode uncertainty, i.e. the fact that often several modes ( l ,  m ) can adequately describe the data. We also introduce a new lack-of-fit function which works at least as well as a previous discriminant function, and which in addition allows us to identify the sign of the azimuthal order m . We applied our method to star HD181558 by using several numerical methods, from which we learned that numerically solving the estimating equations is an intensive task. We report on the numerical results, from which we gain insight in the statistical uncertainties of the physical parameters that are involved in the moment method.     

Insight into Informant Discrepancies Regarding Psychosexual Functioning of Adolescents with and without Autism Spectrum Disorder

The private nature of psychosexual functioning leads adolescents and their parents to have different perspectives, which highlights studying parent–child informant discrepancies in this domain. We investigated informant discrepancy in psychosexual functioning, using the self‐report and parent report versions of the Teen Transition Inventory (TTI), of adolescents with autism spectrum disorder (ASD; 136 parent–child dyads) compared to adolescents from the general population (GP; 70 parent–child dyads). Significantly larger informant discrepancies exist in ASD dyads than GP dyads in most domains of psychosexual functioning, except for Body image, Sexual behavior, and Confidence in the future. It is important to use and pay attention to both informants, as discrepancies are relevant for both research and clinical practice regarding psychosexual functioning.     

Towards ‘New Emotional Movements’? A Comparative Exploration into a Specific Movement Type

In this article we broaden the scope of earlier research that established a theoretical specificity for the Belgian ‘White March’ and ‘White Movement’, by comparing them to three similar movements and mobilizations that were also triggered by random violence. The comparisons suggest that we are dealing with a new type of social movement and mobilization, preliminarily referred to as ‘new emotional movements’. The three other cases under study are the ‘Snowdrop Campaign’ in the UK, the ‘Million Mom March’ in the US and the ‘Movement against Senseless Violence’ in the Netherlands. Four important features seem to characterize all cases: the central role of emotions and victimization in the mobilization and development of the movement; broad elite support; organizational weakness; and extensive media support. We distinguish two sub-types of new emotional movements: (1) an instrumental variant with clear-cut aims and demands; and (2) an identity variant with displays of solidarity and compassion as the main constitutive elements. In both cases the initiators lack prior organizational experience and the absence of mobilizing organizations is compensated for by mass media support. In the instrumental sub-type neither the victims nor their relatives take the initiative but lend support and give approval to amateur entrepreneurs. The main mobilizing emotion appears to be fear about the possibility of personal suffering, and this emotion is reflected in the formulation of clear-cut demands for the future prevention of similar events. This instrumentality results in elite support being considerably broad, yet partisan. In contrast, the victims themselves take the initiative in the identity variant, causing the movement to remain more or less without specific demands but ensuring a broad support that is not bounded by party lines.     

Job resources and emotional exhaustion: The mediating role of learning opportunities

The Job Demands-Resources model predicts that job demands increase and job resources decrease emotional exhaustion in employees. In this study, we investigated one possible mechanism for this, in order to provide a deeper insight into the role of job resources in this energy-depletion process. We assumed that job resources (autonomy and task variety) reduce emotional exhaustion through the promotion of opportunities for personal growth and development, especially workplace learning. Moreover, we expected that job demands (workload, cognitive and emotional demands) would be positively related to work-related learning opportunities. Our research model was tested in a large and heterogeneous sample out of the Dutch working population (N = 4589), following a cross-validation procedure. Multi-group structural equation modelling revealed that autonomy and task variety promoted learning opportunities, which in turn partially mediated between these job resources and emotional exhaustion. With respect to job demands, our study showed mixed results: cognitive demands promoted learning opportunities, workload frustrated such opportunities, and emotional demands were not significantly related to learning opportunities. Our results contribute to a better understanding of the interplay between job demands, job resources and learning opportunities in the energy-depletion process, and support the need for the promotion of learning opportunities in the workplace.     

Organizational Memory: From Expectations Memory to Procedural Memory

Organizational memory is not just the stock of knowledge about how to do things, but also of expectations of organizational members vis‐à‐vis each other and the organization as a whole. The central argument of this paper is that this second type of organizational memory –organizational expectations memory– is a necessary precondition for successfully creating and maintaining organizational procedural memory, which is at the basis of organizational performance. If members of organizations have fewer expectations of being rewarded beyond what is stipulated in formal contracts, these individuals are less likely to risk investing in collective tacit and firm‐specific knowledge resources and more likely to focus on building individual and mobile knowledge resources that have value outside the boundaries of the organization. A case study of latent organizations in the Dutch film industry is presented to support the central argument and suggests further avenues of research, in particular concerning the effects of labour mobility on organizational expectations memory.     

Daily Fantasy Football and Self-Reported Problem Behavior in the United States

Traditional, season-long fantasy sport participation has grown considerably since the late 1990s, and in an attempt to capitalize on this growing demand, daily fantasy sports (DFS) providers have created a new game where money changes hands instantly. This change has led some legal commentators and state agencies to believe the game is a form of Internet gambling similar to online poker, blackjack, and sports wagering, and thus, it requires increased regulation or even prohibition. Little is known, however, about the gambling behavior associated with DFS participation. Thus, the purpose of the current study was to examine problem gambling severity in conjunction with DFS participant motives, perceptions, and consumption behavior. Over 500 DFS participants were surveyed, and the results suggest DFS participants behave similarly with participants in other forms of gambling activities. In addition, the findings suggest additional consumer protections may be needed to prevent further problem behavior such as chasing.     

Planning for industrial development in newly independent countries— An operational approach

In this paper the author examines the problems of planning at the national level in the developing countries. The article concentrates on the thought processes of planning in order to reach conclusions.     

Effects of apologies and crisis responsibility on corporate and spokesperson reputation

This study is aimed at the effects of making apologies in a crisis situation and attributed crisis responsibility on corporate- and spokesperson reputation. In a 2 × 2 scenario experiment (spokesperson making apologies versus no apologies; and accidental versus preventable crisis), 84 respondents judged corporate and spokesperson reputation. We found that the crisis has more impact on corporate reputation than on the spokesperson's reputation. This indicates that the crisis is seen as a collective responsibility of the organization, rather than the personal responsibility of the spokesperson.     

The Political Role of Social Work: Grasping the Momentum of Working Through Interorganizational Networks in Belgium

ABSTRACT

This article explores how social workers deal with the ambiguity that arises from their ability to transform the private needs of individuals into issues of public concern. It is argued that the current shift towards joined-up working, which is epitomized by the creation of interorganizational networks, could encourage new opportunities for social work. These horizontal and nonhierarchical forms of cooperation serve as platforms for debate to ensure regular discussions about the causes of and potential solutions to complex societal problems. This article relies on a case-study of bottom-up networks in two Belgian cities where social workers from various policy fields voluntarily joined forces to look after hard-to-reach groups of homeless people. The primary data were obtained from document analysis, semi-structured interviews with network participants, and direct observations of network meetings. These data were analyzed by conducting a directed content analysis. The examination shows that the joint creation of welfare services leads to substantial debates among social workers about the criteria which homeless people must meet in order to be provided with welfare services and primary care. The paper shows that despite being aware of differing viewpoints by their engagement in such debates, social workers are reluctant to challenge the dominant conceptualizations underlying their own day-to-day practices, and that this impacts on the potential to induce local policymakers to take further action with regard to reducing homelessness.     

The Affiliation Effect in First‐Price Auctions

We study the monotonicity of the equilibrium bid with respect to the number of bidders n in affiliated private‐value models of first‐price sealed‐bid auctions and prove the existence of a large class of such models in which the equilibrium bid function is not increasing in n. We moreover decompose the effect of a change in n on the bid level into a competition effect and an affiliation effect. The latter suggests to the winner of the auction that competition is less intense than she had thought before the auction. Since the affiliation effect can occur in both private‐ and common‐value models, a negative relationship between the bid level and n does not allow one to distinguish between the two models and is also not necessarily (only) due to bidders taking account of the winner's curse.