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"Palmer, Jack"
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Predicting Altruistic Behaviour by the Benefactor-Beneficiary Relationship
The evolution of altruism—costly behaviour by an individual (the benefactor) that benefits another individual (the beneficiary)—has been theorized as a function of kinship, reciprocity potential, shared group membership, and costly signalling. These benefactor-beneficiary relationships have predictive value for real-life altruistic acts. J. A. Palmer designed the Costly Signals Questionnaire (CSQ) to measure participants’ level of support for altruistic acts performed under the varying conditions of (1) close kin, (2) person who can reciprocate, (3) group co-members, and (4) anonymous strangers (representing costly signalling theory). After signing consent forms, participants (n = 465) were given an opportunity to perform an altruistic act anonymously (donate valuable raffle tickets) and then completed the CSQ and measures of altruism, empathy, and religiosity. Statistical analyses support CSQ reliability and revealed that the CSQ significantly predicted altruistic action; the other measures did not (although they significantly correlated with the CSQ). Participants’ support for altruistic acts ranked significantly from strongest to weakest: kin-based > reciprocity > shared group > anonymous stranger. The CSQ appears to be a reliable, valid instrument for predicting altruistic action and measuring support of altruism based on benefactor-beneficiary relationships per evolutionary theory.
Journal Article
On the work hardening of titanium: new insights from nanoindentation
Nanoindentation was used to probe the local slip resistance in CP-Ti deformed in compression to different extents. Changes in hardness in the deformed grains and twins were compared with the change in flow stress measured during deformation, with the aim to elucidate the relative contribution of slip and twinning to the work hardening of Ti alloys. The hardness values were calibrated with measurements on binary Ti–Al alloys. The hardness increased only slightly with deformation and cannot explain the observed work hardening. Although twinned regions were found to be harder than the parent grains, this increase was found to be small once the effect of crystal orientation was accounted for. The increase in hardness in the twins was slightly higher for compressive twins than for tensile twins. It is proposed that this modest hardness increase in the twins is more consistent with the presence of twinning stresses than with a change in the local flow stress caused by dislocation interactions. The implications of these findings to the work hardening of CP titanium are discussed.
Journal Article
Utility and Safety of Artificial Intelligence for Patient‐Initiated Contact After Functional Rhinoplasty
To understand the content of patient calls after functional rhinoplasty and to evaluate artificial intelligence chatbots' ability to provide accurate, intelligible, and safe responses.
Retrospective review.
Tertiary-care institution.
A single-institution, retrospective review was conducted for patients who underwent functional rhinoplasty between 2017 to 2023. Postoperative calls and messages prior to first follow-up were analyzed, and 48 representative prompts were generated, including 6 \"Red Flag Questions\" indicating potential complications. Prompts were input into 4 chatbots (ChatGPT, Claude, Perplexity, and Gemini). Two independent, blinded experts graded responses using a Likert-style Global Quality Scale (GQS) and a binary Expert Opinion Question (EOQ; \"Would you feel comfortable if your patient received this response rather than speaking with your staff?\"). Flesch-Kincaid (FK) Grade Levels measured readability. Chi-square and Mann-Whitney
tests compared chatbot performance.
Of 378 patients, 137 (36%) initiated contact, with 181 total calls. Common concerns included pain (19%) and medication questions (14%). Seventy-three percent (n = 132) received routine counseling, with no complications at first follow-up. ChatGPT produced \"Good\" or \"Excellent\" responses 98% of the time, significantly outperforming the next-best chatbot (Perplexity, 79%;
= .0039). Experts unanimously approved ChatGPT responses (mean EOQ = 1) 96% of the time, and 100% for Red Flag Questions. Perplexity was the most readable (median FK 13.2), and ChatGPT the least (16.8;
< .0001).
Patient calls are common after functional rhinoplasty. Most can be managed with reassurance. Chatbots, especially ChatGPT, provide reliable responses, which may improve satisfaction and reduce workload without compromising safety. Future development should focus on readability.
Journal Article
Entanglements of modernity, colonialism and genocide: burundi and rwanda in historical-sociological perspective
This thesis explores two lines of critique of social theories of modernity by way of a historical sociological analysis of Burundi and Rwanda. Firstly, it engages with arguments about the Euro-/Western-centric assumptions which are suggested to have underpinned many conceptualisations of modernity. Secondly, it considers the notion that the processes of modernity move gradually, if precariously, towards more peaceable forms of cohabitation within and between societies. In doing so, it draws on and develops the theoretical framework of entanglement, which emphasises the existence of a variety of intertwined historical routes to and through modernity. Central to the analysis is a critique of both the idea that modernity entails a progressive ‘detraditionalisation’ or destruction of traditional societal forms, and the idea that tradition provides a repository of cultural resources upon which are founded distinct, plural ‘modernities’. In the case of Burundi and Rwanda, I argue that colonial modernity, in its indirect rule format, in important respects ‘solidified’ tradition in racial terms. In the transition to independence, the colonial legacy both enabled and delimited autonomous societal self-understandings and political movements. In the postcolonial period, the tension between the modern commitment to autonomy on the one hand and seemingly traditional legacies on the other has been realised in profoundly destructive and violent ways. I conclude that the historical experiences of extremely violent social conflict in Burundi and Rwanda are situated within a specific route to and through modernity. The original contribution of the thesis is twofold. Firstly, it presents a new substantive case study to the analysis of non-Western experiences and interpretations of modernity. Secondly, in doing so, it offers a theoretical contribution to debates concerning the multiplicity of modernity which have arisen principally in the paradigm of ‘multiple modernities’ and postcolonial sociology.
Dissertation
1005 Reducing ed revisits among copd patients managed in ed observation unit: reliable implementation of copd care-bundle using improvement science
BackgroundCOPD exacerbations (eCOPD) deleteriously effects patient outcomes and healthcare spending. Emergency Department observation units (ED-Obs) provide short-term acute care in order to reduce resource utilisation, however successful COPD-specific programs in ED-Obs are lacking.ObjectivesAchieve 90% reliable implementation of COPD care-bundle among eCOPD patients discharged from ED-Obs by April 2017. The overall goal is to reduce 30 day all-cause ED revisits for eCOPD patients discharged from ED-Obs from the baseline rate of 49%.MethodsSetting: An 800-bed academic hospital with 700 eCOPD ED encounters/year, out of which 20% triage to ED-Obs. All patients triaged to ED-Obs with eCOPD diagnosis were included. A five-element COPD bundle designed to mitigate system-level failures, was adopted from in-patient setting. The bundle components were: appropriate inhaler regimen, 30 day inhaler supply, personalised inhaler education, standardised discharge instructions and follow-up in 15 days. A multidisciplinary team was formed to support bundle implementation within the 24 hours ED-Obs stay using Model for Improvement. Bundle component adherence and 30 day ED revisit rates were monitored using SPC p-charts. Hospitalisation rate from ED-Obs was used as balancing measure.ResultsThe patient characteristics were similar in baseline and post-bundle period. Multiple PDSA cycles were performed to achieve a final process (Figure 1). The adherence to COPD care bundle components has maintained >90% from 4/2017–8/2017 (Figure 2). The 30 day all-cause ED revisit rate reduced from 49% to 28% with a pending system-shift on SPC (Figure 3). Hospitalisation rate remained unchanged.Abstract 1005 Figure 1COPD care bundle delivery process in ED observation unit. COPD: chronic obstructive pulmonary disease, ED: emergency department, Obs: observation, d/c; discharge, dispo: disposition, Rx: prescription, HER: electronic health record, INH: inhalers, PCP: primary care providerAbstract 1005 Figure 2Process measure: adherence to COPD care bundle components. RT: respiratory therapists, MLP: mid-level provider, EMR: electronic health recordAbstract 1005 Figure 3Outcome measure: 30 day all-cause ED revisit rate. COPD: chronic obstructive pulmonary diseaseConclusionsImproving care at discharge transition of eCOPD patients from ED-Obs to home through reliable adherence to COPD care-bundle reduces 30 day all-cause ED revisits.
Journal Article
Commentary on Janet Landa's Paper
In her paper, Janet Landa argues that the key behind the success of the ethnically homogeneous Chinese middleman group (EHMG) is their highly developed in-group cooperation. She places the EHMG phenomenon within the framework of evolutionary biology by calling it 'a cultural transmission unit' subject to the influence of both genes and culture. Landa suggests that the individual members of the EHMG comprise the units of selection for EHMG groups much like the genes comprise the units of selection for individual organisms. However, evolution occurs through the differential survival and reproduction of individual organisms. In order to meet the criteria of biological group selection, it would have to be demonstrated that groups in competition with EHMGs had gone extinct. The fact that the EHMGs are simply faring better than their competitors is not evidence for group selection. The other reason biological group selection is not really applicable to EHMGs is that there are no physical/biological barriers to exogamous mating, and cultural barriers are intrinsically unstable. [PUBLICATION ABSTRACT]
Journal Article