@article {bnh-8340, title = {Setting expectations during volunteer recruitment and the first day experience: a preregistered experimental test of the met expectations hypothesis}, journal = {European Journal of Work and Organizational Psychology}, year = {2022}, month = {04/2022}, abstract = {

In a preregistered experimental study that draws from the met expectations hypothesis, we examined how volunteer recruitment messaging can shape expectations of new volunteers prior to their first day, and whether meeting or failing to meet expectations on the first day would affect satisfaction. By experimentally manipulating a recruitment poster, we set either a transactional (i.e., by volunteering, one can learn new skills) or a relational expectation (i.e., one can work in a team). Participants then viewed an experimentally determined vignette that depicted their first day as a volunteer as either being rich in, or bereft of, experiences of teamwork and learning new skills (crossed). We found that recruitment messaging strongly impacted the participants{\textquoteright} expectations of the volunteering experience prior to their first day. Neither meeting expectations regarding teamwork nor learning new skills played a statistically significant causal role in determining satisfaction. By contrast, richer experiences notwithstanding expectations, and especially those pertaining to learning new skills, were more important determinants of satisfaction. Polynomial regression analyses supported the experimental results, namely that experiences far more strongly determined satisfaction than did expectations. We conclude that providing richer experiences to volunteers is more important than expectation management for volunteer satisfaction.

}, keywords = {experiment, met expectations, preregistered, recruitment, volunteering}, doi = {https://doi.org/10.1080/1359432X.2022.2070478}, url = {https://www.tandfonline.com/doi/epub/10.1080/1359432X.2022.2070478?needAccess=true}, author = {Patrick Dunlop and Djurre Holtrop and Darja Kragt and Maryl{\`e}ne Gagn{\'e} and Hawa Muhammad Farid and Aleksandra Luksyte} } @article {bnh-4819, title = {Simulation of fuel bed ignition by wildland firebrands}, journal = {International Journal of Wildland Fire}, volume = {27}, year = {2018}, month = {07/2018}, abstract = {

A 3-D mathematical model of fuel bed (FB) ignition initiated by glowing firebrands originating during wildland fires is proposed. In order to test and verify the model, a series of experiments was conducted to determine the FB ignition time by a single pine bark and twig firebrand (Pinus sylvestris). Irrespective of the pine bark sample sizes and experimental conditions, the ignition of the FB was not observed. Conversely, pine twigs, under certain parameters, ignited the FB in the range of densities (60{\textendash}105 kg m-3) and with the airflow velocity of >=2 m s-1. The results of the mathematical modelling have shown that a single pine bark firebrand <=5 cm long with a temperature of T <= 1073 K does not ignite in the flaming mode the FB, and only the thermal energy of larger particles is sufficient for flaming ignition of the adjacent layers of the FB. The analysis of the results has shown that the firebrand length is a major factor in the initiation of ignition. Comparison of the calculated and observed FB ignition times by a single firebrand have shown that our modelling accords well with the experimental results.

}, keywords = {critical conditions, experiment, ignition, modelling, spotting.}, url = {https://www.publish.csiro.au/WF/WF17083}, author = {O. V. Matvienko and D. P. Kasymov and Alex Filkov and O. I. Daneyko and D. A. Gorbatov} }