Existence of a utility on a topological semigroup

This paper presents a comprehensive mathematical framework in which a unified treatment of additive and expected utility can be given. For achieving this, elaborate structural assumptions, characterizing a simply ordered, topological semigroup, have to be established in order to construct an isomorphism with the additive group of real numbers. This construction establishes a link between additive and expected utility theory to the extent that the same mathematical considerations leading to the derivation of an additive representation are also valid for proving the expected utility theorem.     

Fehlzeitengespräche — Instrument betrieblicher Gesundheitsförderung?

Talking about absenteeism from the job as an instrument of health promotion in companies? The author outlines the problems of the systematic use of talks about absenteeism from the job, that is talking with employees, when they return to the job, after their having been sick. Do these instruments promote occupational health? The author presents the results of an empirical qualitative evaluation of a health promotion project implemented in a service company. The main topics of the study ask whether employees accept the mentioned instrument and which expectations and fears they anticipate being confronted with its systematic use. The result of the study are discussed in detail and will be complemented by recommendations for the future development of the ongoing health promotion project.     

Economic Darwinism

We define an evolutionary process of “economic Darwinism” for playing the field, symmetric games. The process captures two forces. One is “economic selection”: if current behavior leads to payoff differences, behavior yielding lowest payoff has strictly positive probability of being replaced by an arbitrary behavior. The other is “mutation”: any behavior has at any point in time a strictly positive, very small probability of shifting to an arbitrary behavior. We show that behavior observed frequently is in accordance with “evolutionary equilibrium”, a static equilibrium concept suggested in the literature. Using this result, we demonstrate that generally under positive (negative) externalities, economic Darwinism implies even more under- (over-)activity than does Nash equilibrium.     

Dose intra-subject escalation to an event (DIETE): A new method for phase 1 dose-finding utilizing systematic intra-subject dose escalation with application to T-cell engagers

T-cell engagers are a class of oncology drugs which engage T-cells to initiate immune response against malignant cells. T-cell engagers have features that are unlike prior classes of oncology drugs (e.g., chemotherapies or targeted therapies), because (1) starting dose level often must be conservative due to immune-related side effects such as cytokine release syndrome (CRS); (2) dose level can usually be safely titrated higher as a result of subject's immune system adaptation after first exposure to lower dose; and (3) due to preventive management of CRS, these safety events rarely worsen to become dose limiting toxicities (DLTs). It is generally believed that for T-cell engagers the dose intensity of the starting dose and the peak dose intensity both correlate with improved efficacy. Existing dose finding methodologies are not designed to efficiently identify both the initial starting dose and peak dose intensity in a single trial. In this study, we propose a new trial design, dose intra-subject escalation to an event (DIETE) design, that can (1) estimate the maximum tolerated initial dose level (MTD1); and (2) incorporate systematic intra-subject dose-escalation to estimate the maximum tolerated dose level subsequent to adaptation induced by the initial dose level (MTD2) with a survival analysis approach. We compare our framework to similar methodologies and evaluate their key operating characteristics.     

Digitales Recruiting

This article in the journal Gruppe. Interaktion. Organisation. provides an overview of past, present and future of recruitment and assessment. It illustrates how in the process of digitization the methods of recruitment and assessment change through the use of Artificial Intelligence, which opportunities and risks are associated with these developments, and what needs to be considered when introducing the new technologies.     

Touch in residential child care: staff’s bodies and children’s agency

This paper concerns the significance of touch in the everyday life of those living and working in residential child care. Public and professional awareness about child abuse has focused attention on the bodies of children and their vulnerability – but the same cannot be said of the bodies of staff members who touch children. This ethnographic study of a Scottish residential child care unit shows such touch to be central to the everyday participation of children and young people in care. On the basis of participant observation, the paper analyses how care workers influence the agency of children and young people by bringing their own bodies into their relationships with them. Based on a relational understanding of care, the paper elaborates on how tender and restraining forms of touch form part of care workers’ professional repertoire of actions. The analysis of various instances of touch in terms of sociology of the body shows how staff members can help to shape children and young people’s opportunities for participation with their own bodies. In conclusion, the paper therefore argues for a professional and reflexive engagement with bodies rather than a general avoidance of touch between care workers and young people.     

Paths towards Family‐friendly Working Time Arrangements: Comparing Workplaces in Different Countries and Industries

Although studies have examined the distribution and conditions of employer‐provided work–family arrangements, we still lack a systematic investigation of how these vary for different countries and industries. Based on the European Working Conditions Survey 2010, this study examines the conditions under which firms provide family‐friendly working time arrangements and what the differences are across four countries (Austria, Denmark, Italy and the UK) and four industries. The impact of employee representatives, employee involvement, manager support and female managers varies across countries and industries because of the institutional environment (prevailing family model, industrial relations) and workforce composition (gender). The impact of employee representatives depends on their co‐determination rights, and the direction of their effect on the prevailing family model (e.g. negative in conservative countries such as Austria) and the gender composition of the workforce (negative in male‐dominated production, but positive in services). Employee involvement in the work organization is significantly positive in Austria and Denmark (both with co‐operative industrial relations), while manager support has the strongest effect in the UK (liberal regime). At the industry level, female supervisors are positively associated with family‐friendly working time arrangements only in the male‐dominated production industry. These findings suggest that the effects of agency variables and their direction vary depending on the institutional context.     

Experiments in modelling recent Danish fertility curves

This paper reports the outcome of an exercise in curve fitting to annual sets of Danish age-specific fertility rates for the years 1962 to 1971 by means of least squares. Functions fitted were a cubic spline, the Hadwiger and Coale-Trussell functions, the gamma and beta densities, two versions of a polynomial, and two of Brass's relational procedures, as well as the Gompertz curve. The spline function fitted all curves far better than any of the others. The Coale-Trussell procedure and gamma density were about equal, followed by the Hadwiger function. All of these functions fit the data well. One of the polynomials fit reasonably well, but the rest of the functions were less accurate.