Age and sustainable labour participation: studying moderating effects

Purpose: Research findings are ambiguous regarding the effects of age on sustainable labour participation (SLP), defined as the extent to which people are able and willing to conduct their current and future work. The purpose of this paper is to contribute by examining age effects on SLP by focusing on the moderating role of workload. Design/methodology/approach: A mixed-method study was conducted in 2018. First, a survey was distributed among a sample of 2,149 employees of the Dutch central government. Second, 12 interviews with public sector employees took place to gain greater insight into the quantitative data collected. Findings: Three components that reflect an employee’s SLP were studied: vitality, work ability and employability. The quantitative results, in general, showed that SLP decreased with ageing. However, in contrast to the hypothesis, the results showed a significant positive relationship between age and energy. Moreover, relationships between an employee’s age and certain aspects of their SLP were moderated by workload. The interviews helped to interpret these results. Practical implications: The findings demonstrate that some of the older worker stereotypes are unfounded, and the important practical implications of these are discussed. Originality/value: Earlier research has produced conflicting findings regarding the relationship between age and (aspects of) SLP. By investigating several aspects of SLP in separate regressions within this research, the specific influences of age have become clearer. Furthermore, the research provides fresh insights into the relationship between age and SLP by including moderating effects of workload

Public Professionals and Policy implementation

Nowadays, public policies often focus on economic values, such as efficiency and financial transparency. Public professionals often resist implementing such policies. We analyse this using the concept of ‘role conflicts’. We use a novel approach by conceptualizing and measuring role conflicts on the policy level, thereby linking policy implementation and social psychology research. We construct and test scales for policy-client, policy-professional and organizational- professional role conflicts. Using survey data, we show that policy-professional and policy-client role conflicts negatively influence the willingness of public professionals to implement policies. In concluding, we conceptualized and measured three role conflic

Smileys, Stars, Hearts, Buttons, Tiles or Grids: Influence of Response Format on Substantive Response, Questionnaire Experience and Response Time

Studies of the processes underlying question answering in surveys suggest that the choice of (layout for) response categories can have a significant effect on respondent answers. In recent years, the use of pictures, such as emojis or stars, is often used in online communication. It is unclear if pictorial answer categories can replace traditional verbal formats as measurement instruments in surveys. In this article we investigate different versions of a Likert-scale to see if they generate similar results and user experiences. Data comes from the non-probability based Flitspanel in the Netherlands. The hearts and stars designs received lower average scores compared to the other formats. Smileys produced average answer scores in line with traditional radio buttons. Respondents evaluated the smiley design most positively. Grid designs were evaluated more negatively. People wanting to compare survey outcomes should be awar

Interprofessional teamwork in primary care: the effect of functional heterogeneity on performance and the role of leadership

This study aimed to unravel the complexity of interprofessional teamwork in primary care teams by testing the relationship between functional heterogeneity and team performance through the mediating role of information elaboration, and the moderating roles of directive leadership and participative leadership. The moderated mediation model was validated using survey data from 1105 professionals and 97 supervisors in 143 Dutch primary care teams. The results confirmed the model and showed a significant negative effect of functional heterogeneity on information elaboration, which in turn had a positive effect on team performance. Both directive and participative leadership moderated the negative effect of functional heterogeneity on information elaboration to the extent that the indirect negative effect of functional heterogeneity on team performance became insignificant under high levels of either directive or participative leadership. The theoretical implications of these findings for the literature on healthcare, team diversity, and leadership, as well as the practical implications for policy makers, educationalists and managers of primary care teams, are discussed

Feasibility of Sentinel Node Biopsy in Head and Neck Melanoma Using a Hybrid Radioactive and Fluorescent Tracer

This study was designed to examine the feasibility of combining lymphoscintigraphy and intraoperative sentinel node identification in patients with head and neck melanoma by using a hybrid protein colloid that is both radioactive and fluorescent. Eleven patients scheduled for sentinel node biopsy in the head and neck region were studied. Approximately 5 h before surgery, the hybrid nanocolloid labeled with indocyanine green (ICG) and technetium-99m ((99m)Tc) was injected intradermally in four deposits around the scar of the primary melanoma excision. Subsequent lymphoscintigraphy and single photon emission computed tomography with computed tomography (SPECT/CT) were performed to identify the sentinel nodes preoperatively. In the operating room, patent blue dye was injected in 7 of the 11 patients. Intraoperatively, sentinel nodes were acoustically localized with a gamma ray detection probe and visualized by using patent blue dye and/or fluorescence-based tracing with a dedicated near-infrared light camera. A portable gamma camera was used before and after sentinel node excision to confirm excision of all sentinel nodes. A total of 27 sentinel nodes were preoperatively identified on the lymphoscintigraphy and SPECT/CT images. All sentinel nodes could be localized intraoperatively. In the seven patients in whom blue dye was used, 43% of the sentinel nodes stained blue, whereas all were fluorescent. The portable gamma camera identified additional sentinel nodes in two patients. Ex vivo, all radioactive lymph nodes were fluorescent and vice versa, indicating the stability of the hybrid tracer. ICG-(99m)Tc-nanocolloid allows for preoperative sentinel node visualization and concomitant intraoperative radio- and fluorescence guidance to the same sentinel nodes in head and neck melanoma patient

Moments and mean square charge radii of short-lived argon isotopes

We report on the measurement of optical isotope shifts for $^{32-40}$Ar and for $^{46}$Ar from which the changes in mean square nuclear charge radii across the N = 20 neutron shell closure are deducted. The investigations were carried out by collinear laser spectroscopy in fast beams of neutral argon atoms. The ultra-sensitive detection combines optical pumping, state-selective collisional ionization and counting of $\beta$-radioactivity. By reaching far into the sd-shell, the results add new information to the systematics of radii in the calcium region (Z $\approx$ 20). Contrary to all major neutron shell closures with N $\geq$ 28, the N = 20 shell closure causes no significant slope change in the development of the radii. Information from the hyperfine structure of the odd-A isotopes includes includes the magnetic moments of $^{33}$Ar (I=1/2) and $^{39}$Ar (I=7/2), and the quadrupole moments of $^{35}$Ar, $^{37}$Ar (I=3/2) and $^{39}$Ar. The electromagnetic moments are compared to shell-model predictions for the sd- and fp-shell. Even far from stability a very good agreement between experiment and theory is found for these quantities. The mean square charge radii are discussed in the framework of spherical SGII Skyrme-type Hartree-Fock calculations

Assessment of reverberation time by two measurement systems for room electromagnetics analysis

A closed room environment is viewed as a lossy cavity, characterized by possibly a line of sight (LOS) component and diffuse scattering parts from walls and internal obstacles. A theory used in acoustics and reverberation chambers is applied for the electromagnetics case, and main issues related to measurement systems and antennas characteristics are discussed. The goal of this paper is the assessment of the reverberation time in an environment with different measurement systems. From the reverberation time one can derive the absorption area and hence the absorption cross section for humans in realistic environments

Off-line studies of the laser ionization of yttrium at the IGISOL facility

A laser ion source is under development at the IGISOL facility, Jyvaskyla, in order to address deficiencies in the ion guide technique. The key elements of interest are those of a refractory nature, whose isotopes and isomers are widely studied using both laser spectroscopic and high precision mass measurement techniques. Yttrium has been the first element of choice for the new laser ion source. In this work we present a new coupled dye-Ti:Sapphire laser scheme and give a detailed discussion of the results obtained from laser ionization of yttrium atoms produced in an ion guide via joule heating of a filament. The importance of not only gas purity, but indeed the baseline vacuum pressure in the environment outside the ion guide is discussed in light of the fast gas phase chemistry seen in the yttrium system. A single laser shot model is introduced and is compared to the experimental data in order to extract the level of impurities within the gas cell.Comment: 18 pages submitted to NIM

Validation of experimental whole-body SAR assessment method in a complex indoor environment

Experimentally assessing the whole-body specific absorption rate (SARwb) in a complex indoor environment is very challenging. An experimental method based on room electromagnetics theory (accounting only the line-of-sight as specular path) is validated using numerical simulations with the finite-difference time-domain method. Furthermore, the method accounts for diffuse multipath components (DMC) in the total absorption rate by considering the reverberation time of the investigated room, which describes all the losses in a complex indoor environment. The advantage of the proposed method is that it allows discarding the computational burden because it does not use any discretizations. Results show good agreement between measurement and computation at 2.8 GHz, as long as the plane wave assumption is valid, that is, at large distances from the transmitter. Relative deviations of 0.71% and 4% have been obtained for far-field scenarios, and 77.5% for the near field-scenario. The contribution of the DMC in the total absorption rate is also quantified here, which has never been investigated before. It is found that the DMC may represent an important part of the total absorption rate; its contribution may reach up to 90% for certain scenarios in an indoor environment