An experimental investigation of the interpersonal ramifications of lateness to workplace meetings

Individuals often attend meetings at work to which at least one person arrives late. Building from attributional theories of interpersonal behaviour, we conducted an experiment to determine the cognitive, affective, and behavioural components of people\u27s reactions to meeting lateness. Participants read one of eight experimental vignettes that described someone arriving 5 or 15 min late to an important or unimportant meeting, after which the person who arrived late offered either a controllable or an uncontrollable reason for being late. Participants reported greater anger and a willingness to punish the late arrival who gave a controllable excuse, whereas sympathy and prosocial intentions followed the late arrival who gave an uncontrollable excuse. To establish generalizability, we replicated the results using a survey of workers who reported on their thoughts and experiences in their last meeting to which someone arrived late. Overall, our findings also indicated that accounting for the severity of the transgression uniquely contributed to emotional and behaviour reactions, which is an improvement on existing attributional models

It’s All in How You Use It: Managers’ Use of Meetings to Reduce Employee Intentions to Quit

Meetings are often viewed as unnecessary, wastes of time, and overall negative experiences at work. In this study, we examined the positive side of meetings, specifically, how the relationship a manager fosters with subordinates in meetings affects those employees’ intentions to quit (ITQ). Using an online survey of working adults who regularly attended meetings, we found that the relation between perceived organizational support (POS) and leader–member exchange (LMX) quality in meetings on ITQ depended on an employee’s level of negative affectivity (NA). When POS or LMX in meetings was low or average, high-NA employees held significantly higher ITQ than low-NA employees. However, when POS or LMX in meetings was high, high-NA employees were no more likely to quit than low-NA employees. We provide a series of practical recommendations based on our findings that consulting psychologists can implement in their clients’ meetings to address employee withdrawal cognitions. (PsycINFO Database Record (c) 2016 APA, all rights reserved

An experimental investigation of the interpersonal ramifications of lateness to workplace meetings

Individuals often attend meetings at work to which at least one person arrives late. Building from attributional theories of interpersonal behaviour, we conducted an experiment to determine the cognitive, affective, and behavioural components of people\u27s reactions to meeting lateness. Participants read one of eight experimental vignettes that described someone arriving 5 or 15 min late to an important or unimportant meeting, after which the person who arrived late offered either a controllable or an uncontrollable reason for being late. Participants reported greater anger and a willingness to punish the late arrival who gave a controllable excuse, whereas sympathy and prosocial intentions followed the late arrival who gave an uncontrollable excuse. To establish generalizability, we replicated the results using a survey of workers who reported on their thoughts and experiences in their last meeting to which someone arrived late. Overall, our findings also indicated that accounting for the severity of the transgression uniquely contributed to emotional and behaviour reactions, which is an improvement on existing attributional models

Emissions control for ground power gas turbines

The similarities and differences of emissions reduction technology for aircraft and ground power gas turbines is described. The capability of this technology to reduce ground power emissions to meet existing and proposed emissions standards is presented and discussed. Those areas where the developing aircraft gas turbine technology may have direct application to ground power and those areas where the needed technology may be unique to the ground power mission are pointed out. Emissions reduction technology varying from simple combustor modifications to the use of advanced combustor concepts, such as catalysis, is described and discussed

Prediction of stresses and strains around model tunnels with adjacent embedded walls in overconsolidated clay

This paper presents the results of finite element analyses carried out using different constitutive models for overconsolidated clay: the Modified Cam clay model and the Three-Surface Kinematic Hardening (3-SKH) model. These analyses are evaluated against data from an extensive series of physical model tests examining the influence of an embedded wall placed near a tunnel on ground movements and tunnel stability. It is shown that for heavily overconsolidated soils reasonable predictions of both deformations and failure can be obtained from kinematic hardening models such as the 3-SKH model, which allow plastic deformation inside a Modified Cam clay state boundary surface

Bony ingrowth potential of 3D-printed porous titanium alloy: a direct comparison of interbody cage materials in an in vivo ovine lumbar fusion model.

Background contextThere is significant variability in the materials commonly used for interbody cages in spine surgery. It is theorized that three-dimensional (3D)-printed interbody cages using porous titanium material can provide more consistent bone ingrowth and biological fixation.PurposeThe purpose of this study was to provide an evidence-based approach to decision-making regarding interbody materials for spinal fusion.Study designA comparative animal study was performed.MethodsA skeletally mature ovine lumbar fusion model was used for this study. Interbody fusions were performed at L2-L3 and L4-L5 in 27 mature sheep using three different interbody cages (ie, polyetheretherketone [PEEK], plasma sprayed porous titanium-coated PEEK [PSP], and 3D-printed porous titanium alloy cage [PTA]). Non-destructive kinematic testing was performed in the three primary directions of motion. The specimens were then analyzed using micro-computed tomography (µ-CT); quantitative measures of the bony fusion were performed. Histomorphometric analyses were also performed in the sagittal plane through the interbody device. Outcome parameters were compared between cage designs and time points.ResultsFlexion-extension range of motion (ROM) was statistically reduced for the PTA group compared with the PEEK cages at 16 weeks (p-value=.02). Only the PTA cages demonstrated a statistically significant decrease in ROM and increase in stiffness across all three loading directions between the 8-week and 16-week sacrifice time points (p-value≤.01). Micro-CT data demonstrated significantly greater total bone volume within the graft window for the PTA cages at both 8 weeks and 16 weeks compared with the PEEK cages (p-value<.01).ConclusionsA direct comparison of interbody implants demonstrates significant and measurable differences in biomechanical, µ-CT, and histologic performance in an ovine model. The 3D-printed porous titanium interbody cage resulted in statistically significant reductions in ROM, increases in the bone ingrowth profile, as well as average construct stiffness compared with PEEK and PSP

Into the Unknown: How Computation Can Help Explore Uncharted Material Space

Novel functional materials are urgently needed to help combat the major global challenges facing humanity, such as climate change and resource scarcity. Yet, the traditional experimental materials discovery process is slow and the material space at our disposal is too vast to effectively explore using intuition-guided experimentation alone. Most experimental materials discovery programs necessarily focus on exploring the local space of known materials, so we are not fully exploiting the enormous potential material space, where more novel materials with unique properties may exist. Computation, facilitated by improvements in open-source software and databases, as well as computer hardware has the potential to significantly accelerate the rational development of materials, but all too often is only used to postrationalize experimental observations. Thus, the true predictive power of computation, where theory leads experimentation, is not fully utilized. Here, we discuss the challenges to successful implementation of computation-driven materials discovery workflows, and then focus on the progress of the field, with a particular emphasis on the challenges to reaching novel materials

A Web-Based Intervention is Feasible for Supporting Weight Loss and Increased Activity in Rural Women with Arthritis

Rural women have well documented health disparities, with higher prevalence of obesity and chronic conditions, including arthritis. Change in weight and actigraph-recorded data were examined in a subset of 63 of 82 women with physician-diagnosed arthritis who completed a 30-month web-based clinical trial. Repeated measures analyses showed women lost weight from baseline to six months, slowly regained at 18 and 30 months, ending with a lower weight than baseline F(1,62)=40.89, p\u3c0.001, η2p =0.40. Of 53 women with complete data, activity increased at six months, decreased at 18 months, and increased at 30 months F(1,52)=4.14, p =.04, η2p=0.07. Women showed improved change in weight and activity from baseline at six, 18 and 30 months. This study adds support that web-based programs may promote weight loss and activity in a hard-to-reach, underserved population of midlife and older rural women with arthriti

User Engagement Associated with Web-Intervention Features to Attain Clinically Meaningful Weight Loss and Weight Maintenance in Rural Women

Objective: Purely web-based weight loss and weight-loss maintenance interventions show promise to influence behavior change. Yet, little is known about user engagement with features of web-based interventions that predict clinically meaningful weight loss (≥5% bodyweight loss). This study examines level of website feature engagement with the likelihood of attaining ≥5% bodyweight loss after 6 and 18 months participation in a web-based intervention, among rural women at high risk of obesity-related diseases and disability. Methods: In this secondary analysis of clinical trial data of 201 rural women, we examined weight change and user engagement, measured as clicks on specific web-based intervention features (messaging and self-tracking), as associated with clinically meaningful weight loss (baseline to 6 months) and weight-loss maintenance (6 to 18 months). Results: Generalized estimating equations, adjusted for age, intervention group, and intervention phase, revealed high engagement with messaging predicted whether women achieved ≥5% weight loss at 6 months and at 18 months. There was no effect of self-tracking. Conclusions: Being engaged with messages was associated with attaining clinically meaningful short-term and longer-term weight loss. This trial is registered with NCT01307644

Prestress for maximum strength

The problem of designing prestress to maximize elastic capacity is treated analytically. Our formulation models structures comprised of a one-material elastic continuum, subject to a single deterministic load configuration.The equations needed to predict the optimal prestress design are derived. They are shown to comprise necessary and sufficient conditions for global maximum strength in the unconstrained design problem. The theory is demonstrated on the design of prestress for a thick-walled cylinder.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/33778/1/0000031.pd