Critical Incident Research Articles

‘At sea with Lucas’: narrative case study of an early childhood educator faced with a critical incident / ‘En la mitad del mar con Lucas’: estudio de caso narrativo de una maestra de educación infantil ante un incidente crítico

The purpose of this article is to identify and understand the voices and I-positions of Francia, an experienced Chilean educator, in a critical incident that proved fundamental in her identity construction. The adaptation to a school institution in her novice professional development period as an early childhood educator emerges as a significant episode worth exploring. Through a narrative case study and the application of dialogical self-analysis tools, internal, external and outer voices are identified, like the I as someone postponed, the I as a protector, the I as a professional, the I as a collaborator and the school as an outer protective voice. This case highlights the tension between childcare and teacher self-care, revealing a transition towards professionalism. What stands out are collaboration and the need for professional learning in how to deal with critical situations, especially situations related to diversity, underscoring the importance of ethics and consideration of institutional contexts.

Neither student nor teacher? Possible selves in the development of faculty identity during the practicum / ¿Ni estudiante ni profesora? Yoes posibles en el desarrollo de la identidad del profesorado durante el prácticum

The process of becoming a teacher is complex and involves enormous challenges for student teachers. Without a doubt, among the most decisive ones is the initiation into professional practice during the practicum. This qualitative interpretive study analyses the practicum reports (narratives) of 15 primary education students from the Dialogical Self Theory. The study seeks to identify the voices that nourish their professional identity, the I-positions (I-p) that arise when coping with critical incidents (CI) experienced during the practicum, and analyse how the different I-ps contribute to an agential transition of the identity from student to teacher. The results point out that the significant voices that nourish the identity of the students in training come from teachers and family members. When confronting CIs, the I-p of I-student predominated, and difficulties are experienced in deploying other professional I-ps. These also highlight the contribution of different I-ps towards the development of the students’ identity-agency, particularly of the I-p of I-future-teacher (possible self). The study offers relevant information for understanding how the student–teacher transition occurs and for reorienting practices towards identity development.

Experimental and numerical study of wind effect on an ultra‐thin concrete triangular plan shell structure

AbstractSelf‐supporting concrete shell structures are highly efficient in distributing loads, which can result in very reduced thicknesses (ultra‐thin), giving them remarkable slenderness. Due to their geometric complexity, it is difficult to predict how they interact with wind action. The main aim of the present study is to assess the mean surface pressure coefficient distribution in a shell with a triangular plan shape and three supports for different angles of wind incidence. To determine the distribution of surface pressure coefficients and lift and drag force coefficients, an experimental study was carried out in a wind tunnel, and a numerical simulation study was performed through computational fluid dynamics. The experimental and numerical results were analyzed and compared, and making it possible to identify the most critical surface zones and wind incidences when the shell is under the wind action.

Incidentes críticos envolvendo graduandos de Enfermagem durante a Pandemia de COVID-19

Introduction: The academic environment is considered stressful for students. Knowing the changes in teaching-learning activities and their impacts has become essential to redirect new ways of interacting and facing such adverse situations. Thus, one of the ways to evaluate a situation experienced is by drawing parallels between the behaviors and feelings generated, through the critical incident technique (TIC). Objective: To identify critical incidents (situation, behaviors and feelings) related to academic activities during the COVID-19 pandemic. Method: Descriptive study based on the critical incident technique. The students were recruited via e-mail to inform the characterization items; they were asked to remember an academic situation and report it, listing the behaviors experienced and the feelings that originated. Results: Among the 24 situations, most portrayed the accumulation of tasks, difficulty in dealing with a new way of teaching, difficulties in adapting teachers and students to the strategies used regarding the overlapping of academic and domestic activities. Regarding the behaviors, lack of dialogue, difficulties in adapting activities and acts of understanding were mentioned. As for feelings, the positive ones were gratitude, understanding, feeling of support, learning, happiness; as for the negative ones, anxiety, sadness, anguish and physical fatigue stand out. Conclusion: This study identified critical incidents of nursing students during the pandemic. The data indicate that students experienced great stress during the period, but the impacts on professional training require further studies. Descriptors: Nursing; Teaching; Behavior; Pandemics; Adaptation, Psychological

Functioning in the hot seat: exploring the competencies of police incident commanders

PurposeIncident commanders (ICs) are senior police officials tasked with being the key operational decision-makers and leading a command team during major, critical and public order incidents (e.g. bomb threats, hostage situations and protests). Such events are often characterized by heavy time pressures and little information, requiring a highly skilled, integrated emergency response across multiple agencies and significant police planning, organizing and management. ICs must possess the necessary skills, traits and behaviors to deal with such incidents and their challenges. Therefore, the purpose of this study is to identify the competencies of ICs.Design/methodology/approachWe conducted a thematic analysis of thirty-eight (n = 38) in-depth interviews with police personnel who have professional experience as ICs.FindingsResults provided information on the competencies important for effective incident command, including a range of skills, traits and behaviors these police personnel should exhibit, such as command presence, decision-making, confidence, risk assessment, teamwork, task management, stress management, humility and others.Originality/valueWe provide a novel literature contribution by proposing a framework of police IC competencies and their interrelatedness based on first-hand interviews with experts in the field. Practitioners and policymakers need to know actionable strategies for developing standardized training and assessment curricula for ICs. The next steps are to delineate what skills, traits and behaviors are trainable and need to be selected for at the time of recruitment (e.g. occupational aptitude, personality). We provide the foundation upon which researchers and practitioners can make actionable decisions on moving forward to attain these important goals.

The Calibrated Safety Constraints Optimal Power Flow for the Operation of Wind-Integrated Power Systems

As the penetration of renewable energy sources (RESs), particularly wind power, continues to rise, the uncertainty in power systems increases. This challenges traditional optimal power flow (OPF) methods. This paper proposes a Calibrated Safety Constraints Optimal Power Flow (CSCOPF) model that uses the Improved Acceleration Coefficient-Based Bee Swarm algorithm (IACBS) in combination with the equivalent current injection (ECI) model. The proposed method addresses key challenges in wind-integrated power systems by ensuring preventive safety scheduling and enabling effective power incident safety analysis (PISA). This improves system reliability and stability. This method incorporates mixed-integer programming, with continuous and discrete variables representing power outputs and control mechanisms. Detailed numerical simulations were conducted on the IEEE 30-bus test system, and the feasibility of the proposed method was further validated on the IEEE 118-bus test system. The results show that the IACBS algorithm outperforms the existing methods in both computational efficiency and robustness. It achieves lower generation costs and faster convergence times. Additionally, the CSCOPF model effectively prevents power grid disruptions during critical incidents, ensuring that wind farms remain operational within predefined safety limits, even in fault scenarios. These findings suggest that the CSCOPF model provides a reliable solution for optimizing power flow in renewable energy-integrated systems, significantly contributing to grid stability and operational safety.

A Review of the Lawrence Livermore Nuclear Accident Dosimeter 1980s-present

A Nuclear Accident Dosimetry program is a federal requirement for all facilities that have the potential to have a criticality accident. Personnel Nuclear Accident Dosimeter (PNAD) theory and analytical procedures are driven by various scientific needs and interacting regulations. A brief history of the status of USA Department of Energy (DOE) nuclear accident dosimetry regulations, recommendations, and performance testing criteria are given. Then, the history of the Lawrence Livermore National Laboratory (LLNL) PNAD is explored, including changes in the physical dosimeter and adjustments of the analysis method through the last four decades. Finally, the performance of LLNL’s PNAD at criticality accident intercomparison training exercises since 2009 is explored. In general, reported neutron doses have been within or close to DOE-STD-1098 performance criteria while reported gamma doses have been outside of DOE-STD-1098 performance criteria. Reported total absorbed doses have varied in meeting ANSI/HPS N13.3 and ANSI/HPS N13.3 (R2019) performance criteria. Dosimetry staff retirement and turnover have left historical knowledge gaps, yet provided opportunities within the NAD program at LLNL. This review paper serves as an overview of the history and status of the NAD program. Brief technical, procedural and programmatic recommendations to improve LLNL’s NAD program are given. Technical recommendations include investigating orientation factors through modeling or empirical experimentation, investigating gamma dosimetry methods for high-dose scenarios, and exploring other dosimetric methods for simpler, quicker NAD analysis. Procedural recommendations include better documentation of conversion factor (activity-to-fluence and fluence-to-dose) derivations and spectrum uses, and updated analysis spreadsheets or simple Graphic User Interfaces for dose calculations. Programmatic recommendations include formalized training for NAD analysts, and having multiple SMEs trained on the NAD program.

Teaching as a performative art

This paper reports on diagnostic workshops conducted at a teacher training centre in Istanbul focusing on how Applied Theatre methods can support English Language Teacher Education in the areas of self-awareness and self-reflection. The workshops provided 12 participant English Language teachers experience of Applied Theatre methods and techniques to elicit feedback on their pedagogic value and efficacy in teaching. Through dialogue and reflection, participants identified the performative and meta-performative skills they valued from the workshops. While Applied Theatre methods have a proven track record in many contexts, they are rarely utilized in teacher development programmes. Feedback from the workshops revealed that Applied Theatre methods, notably Forum Theatre, provide embodied, participant-led, solution-oriented, multiple voiced opportunities for reflection and dialogue on critical incidents teachers’ face. In addition, participants highlighted performative skills pertaining to developing awareness of self, others and setting that are disregarded in current competence-based teacher education programmes. Participants also uncovered meta-performative skills reflecting on why teachers act in the way that they do. The workshops provide an initial template to create teacher development programmes incorporating Forum Theatre and other Applied Theatre techniques.

Optimally Suppressed Phonon Tunneling in van der Waals Graphene-WS2 Heterostructure with Ultralow Thermal Conductivity.

Van der Waals heterostructures have great potential for realizing ultimately low thermal conductivity because defectless interfaces can be constructed at a length scale smaller than the phonon wavelength, allowing modulation of coherent phonon transport. In this Letter, we demonstrate the mechanism for thermal conductivity reduction at a mode-resolved level. The graphene-WS2 heterostructure with the lowest cross-plane thermal conductivity of 0.048 W/(m·K) is identified from 16,384 candidates by combining Bayesian optimization and molecular dynamics simulations. Then, the angle-resolved phonon transmission is calculated using the mode-resolved atomistic Green's function. The results reveal that the optimal heterostructure nearly completely terminates phonon transport with finite incident angles, owing to the reduced critical incident angle and suppression of phonon tunneling.

Multi-level barriers and facilitators to implementing evidence-based antipsychotics in the treatment of early-phase schizophrenia.

Long-acting injectable (LAI) antipsychotic medications and clozapine are effective yet underutilized medical therapies in early intervention services. The purpose of this study was to conduct a pre-implementation evaluation of contextual determinants of early intervention programs to implement innovations optimizing LAI antipsychotic and clozapine use within a shared decision-making model. Semi-structured interviews explored barriers and facilitators to implementing LAI antipsychotics and clozapine in early intervention services. Participants were: prescribers (n = 2), non-prescribing clinicians (n = 5), administrators (n = 3), clients (n = 3), and caregivers (n = 3). Interviews were structured and analyzed using the Consolidated Framework for Implementation Research (CFIR 2.0). Participants were supportive of using LAI antipsychotics, despite barriers (e.g., transportation, insurance coverage), while most were unfamiliar with clozapine (Innovation). Critical incidents (e.g., COVID-19) did not interfere with implementation, while barriers included lack of performance measures; stigma affecting willingness to take medication; and clozapine considered to be a "last resort" (Outer Setting). Treatment culture was described as client-centered and collaborative, and most participants indicated LAI antipsychotic use was compatible with clinic workflows, but some were in need of resources (e.g., individuals trained to administer LAI antipsychotics; Inner Setting). Participants on the healthcare team expressed confidence in their roles. Family education and collaborative decision-making were recommended to improve client/family engagement (Individuals). Participants related the importance of tracking medication compliance, addressing client concerns, and providing prescribers with updated guidelines on evidence-based treatment (Implementation Process). Results may guide implementation strategy selection for future programs seeking to optimize the use of LAI antipsychotics and clozapine for early-phase schizophrenia, when appropriate.

Allied health work readiness capabilities: a qualitative comparison of graduates, supervisors, and managers’ perspectives

ABSTRACT Researchers have highlighted gaps in the work readiness (WR) of allied health (AH) graduates and the capabilities required to successfully work in an interprofessional collaborative practice healthcare environment. In the studies conducted, the focus has generally been on one AH discipline or on one participant group across disciplines, such as new graduates. We explored WR capability of new AH graduates across three participant groups (managers, supervisors, and graduates) and across several AH disciplines in the health sector. Focus groups using Critical Incident Technique (CIT) were conducted with 47 participants (14 new graduates, 13 supervisors, and 20 managers) from four public health organisations across Eastern Australia. CIT identified examples where new AH graduates had/did not have necessary WR capabilities to manage situations in the collaborative practice environment. Using thematic analysis, we found four main themes related to WR expectations of AH graduates (work skills and knowledge, working with others, personal attributes, and organisational knowledge), with several sub-themes. Some aspects of identified themes/sub-themes were unique to the AH interprofessional work context. Understanding of AH graduates’ WR from multiple perspectives could support development of programs to enable graduate success in interprofessional working environments.

Towards more accessible digital urban public transport for people with autism spectrum disorder (ASD): a critical incident analysis (CIT)

PurposeThis study empirically and comparatively examines two digital technologies that have been implemented as part of the experience of urban public transport during the COVID-19 pandemic in the city of Barcelona, the digitization of tickets and self-service technology in kiosks in the different operators of the metropolitan transport authority (ATM) environment. The study gives a voice to people with ASD and makes a theoretical and practical contribution to making urban transport increasingly digitized after the COVID-19 pandemic, more accessible and inclusive for the group, little observed so far.Design/methodology/approachThe data collection consisted of a discussion group, ethnographic techniques and a visit to the Barcelona Metro (2022), and interviews after the visit through a semi-structured questionnaire with 12 participants with ASD. This study uses the critical incident analysis (CIT).FindingsResults provide an extension of the attribute-based Dabholkar model (1996) that applies to the perception of the use of self-service technology, when using digital technologies in urban transport.Originality/valueThis redefinition of the current model of the perception of the use of technology, taking into account the needs of people with ASD, will enable better decision making by transport operators for previously neglected groups.

Curcumin attenuates ochratoxin A and hypoxia co-induced liver injury in grass carp (Ctenopharyngodon idella) by dual targeting endoplasmic reticulum stress and apoptosis via reducing ROS content

BackgroundOchratoxin A (OTA) is a toxin widely found in aquafeed ingredients, and hypoxia is a common problem in fish farming. In practice, aquatic animals tend to be more sensitive to hypoxia while feeds are contaminated with OTA, but no studies exist in this area. This research investigated the multiple biotoxicities of OTA and hypoxia combined on the liver of grass carp and explored the mitigating effect of curcumin (CUR).MethodsA total of 720 healthy juvenile grass carp (11.06 ± 0.05 g) were selected and assigned randomly to 4 experimental groups: control group (without OTA and CUR), 1.2 mg/kg OTA group, 400 mg/kg CUR group, and 1.2 mg/kg OTA + 400 mg/kg CUR group with three replicates each for 60 d. Subsequently, 32 fish were selected, divided into normoxia (18 fish) and hypoxia (18 fish) groups, and subjected to hypoxia stress for 96 h.ResultsCUR can attenuate histopathological damage caused by coming to OTA and hypoxia by reducing vacuolation and nuclear excursion. The alleviation of this damage was associated with the attenuation of apoptosis in the mitochondrial pathway by decreasing the expression of the pro-apoptotic proteins Caspase 3, 8, 9, Bax, and Apaf1 while increasing the expression of the anti-apoptotic protein Bcl-2, and attenuation of endoplasmic reticulum stress (ERS) by reducing Grp78 expression and chop levels. This may be attributed to the fact that the addition of CUR increased the levels of catalase (CAT) and glutathione reductase (GSH), increased antioxidant capacity, and ensured the proper functioning of respiratory chain complexes I and II, which in turn reduced the high production of reactive oxygen species (ROS), thus alleviating apoptosis and ERS.ConclusionsIn conclusion, our data demonstrate the effectiveness of CUR in attenuating liver injury caused by the combination of OTA and hypoxia. This study confirms the feasibility and efficacy of adding natural products to mitigate toxic damage to aquatic animals.

Life-cycle seismic performance of bridges with thin-walled steel piers under bi-directional excitations

In corrosive environments, steel bridges demonstrate time-dependent seismic performance and varied directional responses to bi-directional excitation at different life-cycle stages. However, current seismic assessment methods for bridges have not adequately addressed the time-dependent effects of bi-directional excitation directionality on seismic responses throughout their entire life cycle. Thus, this study aims to investigate the time-varying directional effects of bi-directional seismic excitations on steel bridges with multiple parameters and to propose a method for predicting the range of critical incident angles while considering the aging effects of bridges. Initially, time-dependent functions that characterize steel corrosion are integrated into multiscale finite element models of the steel bridges to simulate corrosion progression across their life-cycle stages. Subsequently, a quantitative analysis of the bi-directional seismic response of steel bridges is conducted throughout their life cycle, accounting for the directionality of seismic excitation. Finally, a method and process for predicting the range of time-varying bi-directional critical incident angles with 95 % probability are derived by fitting the statistical probability distribution boundary values of the critical incident angle deviation index. The study's findings indicate that the aging effects of steel bridges amplify the displacement response under bi-directional seismic excitation, with the maximum displacement response difference exceeds 40 %. The service time may increase the sensitivity of steel bridges to changes in incident angles, potentially amplifying the displacement response by a factor of 1.69. The study's findings highlight the importance of considering aging effects and bi-directional excitation directionality in bridge seismic assessments.

Visualising the school: a critical study on co-designing a Moodle-based learning management system

ABSTRACT Critical research on data visualisations in education has so far mostly focused on the representation of numeric data in dashboards or graphs. Consequently, the question of how schools are made visible and (re)enacted through visual structures on data-mediated interfaces more broadly – what we call Graphic Data Visualisations (GDV) – has remained under-researched. Addressing that research gap, this study specifically scrutinises the role of GDV as non-human actors within the design process of a Moodle-based learning management system (LMS) in four schools. Following a critical co-design approach, the potential of GDV to reflect on how the visual design shapes educational practices, and to adapt it according to pedagogical and organisational needs is explored. Focusing on ‘critical incidents’ in the design process, we found that local practices substantially influenced the data-based, visual enactment of a school through specific GDV. At the same time, the use of certain GDV enhanced a general critical engagement with datafication among school actors.

The Potential of Using Generative AI/NLP to Identify and Analyse Critical Incidents in a Critical Incident Reporting System (CIRS): A Feasibility Case-Control Study.

To enhance patient safety in healthcare, it is crucial to address the underreporting of issues in Critical Incident Reporting Systems (CIRSs). This study aims to evaluate the effectiveness of generative Artificial Intelligence and Natural Language Processing (AI/NLP) in reviewing CIRS cases by comparing its performance with human reviewers and categorising these cases into relevant topics. A case-control feasibility study was conducted using CIRS cases from the German CIRS-Anaesthesiology subsystem. Each case was reviewed by a human expert and by an AI/NLP model (ChatGPT-3.5). Two CIRS experts blindly assessed these reviews, rating them on linguistic quality, recognisable expertise, logical derivability, and overall quality using six-point Likert scales. On average, the CIRS experts correctly classified 80% of human CIRS reviews as created by a human and misclassified 45.8% of AI reviews as written by a human. Ratings on a scale of 1 (very good) to 6 (failed) revealed a comparable performance between human- and AI-generated reviews across the dimensions of linguistic expression (p = 0.39), recognisable expertise (p = 0.89), logical derivability (p = 0.84), and overall quality (p = 0.87). The AI model was able to categorise the cases into relevant topics independently. This feasibility study demonstrates the potential of generative AI/NLP in analysing and categorising cases from the CIRS. This could have implications for improving incident reporting in healthcare. Therefore, additional research is required to verify and expand upon these discoveries.

Safety and bicycle route choice – To what extent does accident risk and perceived safety influence bicycle route choice?

Safety is a major issue in bicycle traffic and understanding safety-related factors that influence bicycle route choice is crucial for improving safety and promoting sustainable transportation. However, there is a notable lack of research on the impact of accident risk and perceived safety on cyclists' route choice. This study addresses this gap by investigating whether accident-prone areas or perceived insecure locations affect actual route choice decisions. The contribution explores this relationship by leveraging an extensive dataset comprising approximately 4,000 trips from around 170 participants, alongside additional data on infrastructure, operations, exposure, accidents, and mobility diaries on critical incidents. The findings broadly confirm the results from other studies regarding the influence of route characteristics (e.g., existence of cycling infrastructure, traffic volumes of motorized traffic, or presence of signal-controlled intersections). Moreover, the study reveals that a high accident risk along a route does have a slight negative influence on route choice. Surprisingly, perceived safety does not significantly influence route choice of cyclists.

Emergency management decision-making in a changing world: 3 key challenges

Managing emergencies is taxing for individuals due to the stress of making decisions in dangerous, high-stakes and time-constrained environments. These complex, dynamic environments also make it difficult to coordinate as other responders perform different roles that may have conflicting goals. This study explored some of the challenges faced by emergency management decision-makers through a literature review of 70 papers identified from SCOPUS and EBSCO database searches. Three major challenges for emergency management were identified: stress and fatigue, interoperability and ethical decision-making. Each of these challenges is examined to explore their nature and how they are likely to evolve in the future. This paper provides helpful advice on how to mitigate these challenges. We argue that to better meet these challenges, emergency services organisations need to develop and maintain appropriate doctrine and training, develop a supportive organisational culture and effectively learn the lessons of previous critical incidents.

Building patient safety culture by using interprofessional simulation with nursing, paramedic and emergency telecommunication students: A mixed-methods research study

AimThe aim of this study was to investigate student attitudes toward interprofessional education and collaborative practice and their perceptions of simulation design elements after participating in an interprofessional simulation educational activity. BackgroundPatient safety continues to be an international healthcare priority. However, critical incidents to patients continue to persist due to poor communication between professionals and poor teamwork. DesignA mixed methods design. MethodThe study sample consisted of Bachelor of Nursing (n=81), Paramedic (n=38) and Emergency Telecommunication (n=11) students randomized into interprofessional groups. Following the interprofessional learning experience, students completed two standardized self-reporting instruments, Students Perceptions of Interprofessional Clinical Education, National League for Nursing Simulation Design Scale and open-ended questions of their perceptions on teamwork and collaboration, communication skills, transfer of care and patient safety. ResultsStudents in each program reported high scores for attitudes toward the importance of teamwork and collaborative practice. There were significant differences in scores between programs for the ranking factors ‘Teamwork and Team-Based Practice’ (BN=4.74SD 0.72, PM=4.66SD 0.81, ET=4.95SD 0.15 *; p = 0.00005) and ‘Roles & Responsibilities’ (BN=3.78SD 1.12, PM=3.55SD 0.92, ET=4.67SD 0.85*; p= 0.012). Themes included: communication and collaboration in teamwork; roles, responsibilities and leadership; patient-centred care and safety; and emotional dynamics and professional growth. ConclusionAn interprofessional simulation is an effective strategy to practice teamwork and collaboration and communication skills during transfer of care. Ensuring earlier education of roles and responsibilities during transfer of care needs review as do strategies for structured handover communication tools.

Impact of Occupational Socialization on South Korean Physical Education Teachers’ Interpretation and Delivery of the Hanaro Teaching Model

Purpose: To determine the impact of occupational socialization on eight South Korean teachers’ interpretation and delivery of the Hanaro Teaching (HT) model. Method: Data were collected through formal interviews, film of teachers employing HT, document analysis, reflective journaling, and the critical incident technique. They were analyzed using analytic induction and constant comparison. Findings: The teachers interpreted and delivered the HT model in four different ways. These were the full and full+ versions of the model, watered down, and taking a cafeteria approach. The organizational socialization phase was key in shaping how the teachers delivered the model. The teachers’ acculturation and professional socialization were mainly supplemental. Conclusions: The fact that seven of the teachers employed HT without any formal training suggests that the model was fairly easy to learn. Specific training in undergraduate physical education teacher education, however, could lead to more teachers employing the full and full+ versions of the model.