A Stochastic Model Based on Optimal Satellite Subset Selection Strategy for Smartphone Pseudorange Relative Positioning.

In order to overcome the limitations of traditional stochastic models for smartphones, we introduce a double-difference code pseudorange residual (DDPR)-dependent stochastic model based on an optimal satellite subset, with the goal of mitigating the constraints imposed by the quality of GNSS observations in smartphones on the accuracy and reliability of phone-based GNSS positioning. In our methodology, the satellite selection process involved considering the integrated carrier-to-noise density ratio (C/N0) index of both the reference station and the smartphone, enabling us to construct a satellite subset characterized by superior observation quality. Furthermore, by leveraging the optimal subset of satellites and incorporating the C/N0-dependent stochastic model, we could determine the approximate location of the terminal through pseudorange differential positioning. Subsequently, we estimated the DDPRs for all satellites and utilized these values as prior information to build a stochastic model of the observations. Our findings indicate that in occluded environments, the DDPR-dependent stochastic model significantly enhances positioning accuracy for both the Huawei Mate40 and P40 terminals compared to the C/N0-dependent model. Numerically, the improvements in the north (N), east (E), and up (U) directions were approximately 30%, 32%, and 34% for the Mate40, and 26%, 33%, and 24% for the P40 terminal. This suggests that the proposed DDPR-dependent stochastic model effectively identifies and mitigates large gross error signals caused by multipath and non-line-of-sight (NLOS) signals, thereby assigning lower weights to these problematic observations and ultimately enhancing positioning accuracy. Moreover, the weighting method involves minimal computations and is straightforward to implement, making it particularly suitable for GNSS positioning applications on smartphones in complex urban environments.

Mitigating stimulated Brillouin scattering in multimode fibers with focused output via wavefront shaping.

The key challenge for high-power delivery through optical fibers is overcoming nonlinear optical effects. To keep a smooth output beam, most techniques for mitigating optical nonlinearities are restricted to single-mode fibers. Moving out of the single-mode paradigm, we show experimentally that wavefront-shaping of coherent input light to a highly multimode fiber can increase the power threshold for stimulated Brillouin scattering (SBS) by an order of magnitude, whilst simultaneously controlling the output beam profile. The SBS suppression results from an effective broadening of the Brillouin spectrum under multimode excitation, without broadening of transmitted light. Strongest suppression is achieved with selective mode excitation that gives the broadest Brillouin spectrum. Our method is efficient, robust, and applicable to continuous waves and pulses. This work points toward a promising route for mitigating detrimental nonlinear effects in optical fibers, enabling further power scaling of high-power fiber systems for applications to directed energy, remote sensing, and gravitational-wave detection.

Post graduate remediation programs in medicine: a scoping review.

BACKGROUND: Recognizing that physicians may struggle to achieve knowledge, skills, attitudes and or conduct at one or more stages during their training has highlighted the importance of the 'deliberate practice of improving performance through practising beyond one's comfort level under guidance'. However, variations in physician, program, contextual and healthcare and educational systems complicate efforts to create a consistent approach to remediation. Balancing the inevitable disparities in approaches and settings with the need for continuity and effective oversight of the remediation process, as well as the context and population specific nature of remediation, this review will scrutinise the remediation of physicians in training to better guide the design, structuring and oversight of new remediation programs. METHODS: Krishna's Systematic Evidence Based Approach is adopted to guide this Systematic Scoping Review (SSR in SEBA) to enhance the transparency and reproducibility of this review. A structured search for articles on remediation programs for licenced physicians who have completed their pre-registration postings and who are in training positions published between 1st January 1990 and 31st December 2021 in PubMed, Scopus, ERIC, Google Scholar, PsycINFO, ASSIA, HMIC, DARE and Web of Science databases was carried out. The included articles were concurrently thematically and content analysed using SEBA's Split Approach. Similarities in the identified themes and categories were combined in the Jigsaw Perspective and compared with the tabulated summaries of included articles in the Funnelling Process to create the domains that will guide discussions. RESULTS: The research team retrieved 5512 abstracts, reviewed 304 full-text articles and included 101 articles. The domains identified were characteristics, indications, frameworks, domains, enablers and barriers and unique features of remediation in licenced physicians in training programs. CONCLUSION: Building upon our findings and guided by Hauer et al. approach to remediation and Taylor and Hamdy's Multi-theories Model, we proffer a theoretically grounded 7-stage evidence-based remediation framework to enhance understanding of remediation in licenced physicians in training programs. We believe this framework can guide program design and reframe remediation's role as an integral part of training programs and a source of support and professional, academic, research, interprofessional and personal development.

The efficacy and safety of high-intensity focused ultrasound in the treatment of benign thyroid nodules: A systematic review and meta-analysis from 1990 to 2021.

INTRODUCTION: To date, there have only been 2 systematic reviews, and 1 systematic review and meta-analysis on high-intensity focused ultrasound (HIFU) for benign thyroid nodules. The present systematic review and meta-analysis seeks to evaluate the efficacy and safety of HIFU in the treatment of benign thyroid nodules. METHODS: Pubmed, Embase and Cochrane databases were searched for relevant studies from 1990 to 2021. Nine studies were included in the systematic review and 6 in the meta-analysis. Pooled volume reduction rates (VRRs) at 3, 6 and 24 months after HIFU were assessed. RESULTS: This systematic review and meta-analysis showed that pooled VRRs at 3, 6, and 24 months after HIFU were 42.14 (95% confidence interval [CI] 28.66-55.62, I2=91%), 53.51 (95% CI 36.78-70.25, I2=97%) and 46.89 (95% CI 18.87-74.92, I2=99%), respectively. There was significant heterogeneity in the pooled VRRs at 3, 6 and 24 months after HIFU. No studies recorded complete disappearance of the nodules. Common side effects included pain, skin changes and oedema. There were no major complications except for transient vocal cord paralysis and voice hoarseness (0.014%) and transient Horner syndrome (0.5%). CONCLUSION: HIFU may be an effective and safe alternative treatment modality for benign thyroid nodules. Larger clinical trials with longer follow-up are needed to evaluate the effectiveness of HIFU in treating benign thyroid nodules.

A systematic scoping review of undergraduate medical ethics education programs from 1990 to 2020.

INTRODUCTION: Ensuring medical students are equipped with essential knowledge and portable skills to face complex ethical issues underlines the need for ethics education in medical school. Yet such training remains variable amidst evolving contextual, sociocultural, legal and financial considerations that inform training across different healthcare systems. This review aims to map how undergraduate medical schools teach and assess ethics. METHODS: Guided by the Systematic Evidence-Based Approach (SEBA), two concurrent systematic scoping reviews were carried out, one on ethics teaching and another on their assessment. Searches were conducted on PubMed, Embase, PsycINFO and ERIC between 1 January 1990 and 31 December 2020. Data was independently analysed using thematic and content analysis. RESULTS: Upon scrutinising the two sets of full-text articles, we identified 141 articles on ethics teaching and 102 articles on their assessments. 83 overlapped resulting in 160 distinct articles. Similar themes and categories were identified, these include teaching modalities, curriculum content, enablers and barriers to teaching, assessment methods, and their pros and cons. CONCLUSION: This review reveals the importance of adopting an interactive, multimodal and interdisciplinary team-teaching approach to ethics education, involving community resource partners and faculty trained in ethics, law, communication, professionalism, and other intertwining healthcare professions. Conscientious effort should also be put into vertically and horizontally integrating ethics into formal medical curricula to ensure contextualisation and application of ethics knowledge, skills and attitudes, as well as protected time and adequate resources. A stage-based multimodal assessment approach should be used to appropriately evaluate knowledge acquisition, application and reflection across various practice settings. To scaffold personalised development plans and remediation efforts, multisource evaluations may be stored in a centralised portfolio. Whilst standardisation of curricula content ensures cross-speciality ethical proficiency, deliberative curriculum inquiry performed by faculty members using a Delphi approach may help to facilitate the narrowing of relevant topics.

The efficacy and safety of high-intensity focused ultrasound in the treatment of benign thyroid nodules: A systematic review and meta-analysis from 1990 to 2021

INTRODUCTION@#To date, there have only been 2 systematic reviews, and 1 systematic review and meta-analysis on high-intensity focused ultrasound (HIFU) for benign thyroid nodules. The present systematic review and meta-analysis seeks to evaluate the efficacy and safety of HIFU in the treatment of benign thyroid nodules.@*METHODS@#Pubmed, Embase and Cochrane databases were searched for relevant studies from 1990 to 2021. Nine studies were included in the systematic review and 6 in the meta-analysis. Pooled volume reduction rates (VRRs) at 3, 6 and 24 months after HIFU were assessed.@*RESULTS@#This systematic review and meta-analysis showed that pooled VRRs at 3, 6, and 24 months after HIFU were 42.14 (95% confidence interval [CI] 28.66-55.62, I2=91%), 53.51 (95% CI 36.78-70.25, I2=97%) and 46.89 (95% CI 18.87-74.92, I2=99%), respectively. There was significant heterogeneity in the pooled VRRs at 3, 6 and 24 months after HIFU. No studies recorded complete disappearance of the nodules. Common side effects included pain, skin changes and oedema. There were no major complications except for transient vocal cord paralysis and voice hoarseness (0.014%) and transient Horner syndrome (0.5%).@*CONCLUSION@#HIFU may be an effective and safe alternative treatment modality for benign thyroid nodules. Larger clinical trials with longer follow-up are needed to evaluate the effectiveness of HIFU in treating benign thyroid nodules.

A Scoping Review of Professional Identity Formation in Undergraduate Medical Education.

BACKGROUND: Professional identity formation (PIF) in medical students is a multifactorial phenomenon, shaped by ways that clinical and non-clinical experiences, expectations and environmental factors merge with individual values, beliefs and obligations. The relationship between students' evolving professional identity and self-identity or personhood remains ill-defined, making it challenging for medical schools to support PIF systematically and strategically. Primarily, to capture prevailing literature on PIF in medical school education, and secondarily, to ascertain how PIF influences on medical students may be viewed through the lens of the ring theory of personhood (RToP) and to identify ways that medical schools support PIF. METHODS: A systematic scoping review was conducted using the systematic evidence-based approach. Articles published between 1 January 2000 and 1 July 2020 related to PIF in medical students were searched using PubMed, Embase, PsycINFO, ERIC and Scopus. Articles of all study designs (quantitative and qualitative), published or translated into English, were included. Concurrent thematic and directed content analyses were used to evaluate the data. RESULTS: A total of 10443 abstracts were identified, 272 full-text articles evaluated, and 76 articles included. Thematic and directed content analyses revealed similar themes and categories as follows: characteristics of PIF in relation to professionalism, role of socialization in PIF, PIF enablers and barriers, and medical school approaches to supporting PIF. DISCUSSION: PIF involves iterative construction, deconstruction and inculcation of professional beliefs, values and behaviours into a pre-existent identity. Through the lens of RToP, factors were elucidated that promote or hinder students' identity development on individual, relational or societal levels. If inadequately or inappropriately supported, enabling factors become barriers to PIF. Medical schools employ an all-encompassing approach to support PIF, illuminating the need for distinct and deliberate longitudinal monitoring and mentoring to foster students' balanced integration of personal and professional identities over time.

Postgraduate ethics training programs: a systematic scoping review.

BACKGROUND: Molding competent clinicians capable of applying ethics principles in their practice is a challenging task, compounded by wide variations in the teaching and assessment of ethics in the postgraduate setting. Despite these differences, ethics training programs should recognise that the transition from medical students to healthcare professionals entails a longitudinal process where ethics knowledge, skills and identity continue to build and deepen over time with clinical exposure. A systematic scoping review is proposed to analyse current postgraduate medical ethics training and assessment programs in peer-reviewed literature to guide the development of a local physician training curriculum. METHODS: With a constructivist perspective and relativist lens, this systematic scoping review on postgraduate medical ethics training and assessment will adopt the Systematic Evidence Based Approach (SEBA) to create a transparent and reproducible review. RESULTS: The first search involving the teaching of ethics yielded 7669 abstracts with 573 full text articles evaluated and 66 articles included. The second search involving the assessment of ethics identified 9919 abstracts with 333 full text articles reviewed and 29 articles included. The themes identified from the two searches were the goals and objectives, content, pedagogy, enabling and limiting factors of teaching ethics and assessment modalities used. Despite inherent disparities in ethics training programs, they provide a platform for learners to apply knowledge, translating it to skill and eventually becoming part of the identity of the learner. Illustrating the longitudinal nature of ethics training, the spiral curriculum seamlessly integrates and fortifies prevailing ethical knowledge acquired in medical school with the layering of new specialty, clinical and research specific content in professional practice. Various assessment methods are employed with special mention of portfolios as a longitudinal assessment modality that showcase the impact of ethics training on the development of professional identity formation (PIF). CONCLUSIONS: Our systematic scoping review has elicited key learning points in the teaching and assessment of ethics in the postgraduate setting. However, more research needs to be done on establishing Entrustable Professional Activities (EPA)s in ethics, with further exploration of the use of portfolios and key factors influencing its design, implementation and assessment of PIF and micro-credentialling in ethics practice.

A systematic scoping review of approaches to teaching and assessing empathy in medicine.

BACKGROUND: Empathy is pivotal to effective clinical care. Yet, the art of nurturing and assessing empathy in medical schools is rarely consistent and poorly studied. To inform future design of programs aimed at nurturing empathy in medical students and doctors, a review is proposed. METHODS: This systematic scoping review (SSR) employs a novel approach called the Systematic Evidence Based Approach (SEBA) to enhance the reproducibility and transparency of the process. This 6-stage SSR in SEBA involved three teams of independent researchers who reviewed eight bibliographic and grey literature databases and performed concurrent thematic and content analysis to evaluate the data. RESULTS: In total, 24429 abstracts were identified, 1188 reviewed, and 136 included for analysis. Thematic and content analysis revealed five similar themes/categories. These comprised the 1) definition of empathy, 2) approaches to nurturing empathy, 3) methods to assessing empathy, 4) outcome measures, and 5) enablers/barriers to a successful curriculum. CONCLUSIONS: Nurturing empathy in medicine occurs in stages, thus underlining the need for it to be integrated into a formal program built around a spiralled curriculum. We forward a framework built upon these stages and focus attention on effective assessments at each stage of the program. Tellingly, there is also a clear need to consider the link between nurturing empathy and one's professional identity formation. This foregrounds the need for more effective tools to assess empathy and to better understand their role in longitudinal and portfolio based learning programs.

Structured re-training to reduce peritonitis in a pediatric peritoneal dialysis program: a quality improvement intervention.

BACKGROUND: Decline in skills and knowledge among patients and/or caregivers contributes to peritoneal-dialysis (PD)-related peritonitis. Re-training is important, but no guidelines exist. We describe the implementation of a structured re-training program to decrease peritonitis rates. METHODS: This is a prospective quality improvement study involving pediatric patients on long-term home automated PD at National University Hospital, Singapore, between 2012 and 2018. With increasing peritonitis rates, systematic root cause analysis was performed, and based on the contributory factors identified, a structured re-training program was implemented from 2015. This was conducted in 5 cycles, each consisting of 4 modules (hand hygiene, exit site care, peritonitis, and PD troubleshooting). RESULTS: Peritonitis rates were analyzed in 2 phases: Phase 1 (2012-2014) when no re-training was performed and Phase 2 (2016-2018) after re-training was instituted. Fifty-nine patients were included. Of these, 45 patients were in Phase 1, 32 in Phase 2, and 18 in both phases. Peritonitis rates decreased from 0.37 ± 0.67 episodes per patient-year in Phase 1 to 0.13 ± 0.32 episodes per patient-year in Phase 2. After adjusting for age at kidney failure onset, PD vintage, years of nursing experience, and the average patient-to-nurse ratio over the study period for each patient, the adjusted peritonitis rates decreased by 0.38 episodes per patient-year (95% CI, 0.09 to 0.67, p = 0.011) from Phase 1 to Phase 2. CONCLUSION: Despite an improvement in staffing ratio, peritonitis rates only improved significantly after intensive structured re-training was instituted.

Impact of Caring for Terminally Ill Children on Physicians: A Systematic Scoping Review.

INTRODUCTION: Caring for terminally ill children influences nurses' and allied health provider's quality of life, ability to provide personalized, dignified and empathetic care and even their concepts of personhood. In the absence of data this review utilizes the Ring Theory of Personhood (RToP) to evaluate how a physician's concept of personhood is affected caring for terminally ill children in order to better support them holistically. METHODS: Using PRISMA Guidelines, 14 researchers carried out independent searches of PubMed, CINAHL, PsycINFO, Cochrane Library and gray literature databases for articles published between 2000 to 2019. Concurrent and independent employment of content and thematic analysis (Split Approach) was used to enhance the trustworthiness of the analysis. RESULTS: 13,424 titles and abstracts were retrieved, 188 full texts were evaluated, and 39 articles were included and analyzed. Identical categories and themes identified using the Split Approach suggest that caring for dying children in PPC impacts the physician's professional identity, clinical decision making, personal well-being and relationships. The data also suggests that the magnitude of these effects depends on the presence of protective and risk factors. CONCLUSION: Aside from providing a novel insight into the upon the physician, this review proffers a unique approach to accounting for the presence, magnitude and influence of incoming catalysts, resultant conflicts, and protective and risk factors upon the physician's personhood. Further studies into the changes in personhood are required. Design of a personalized assessment tool based on the RToP will help direct timely, appropriate and personalized support to these physicians.

Interprofessional communication (IPC) for medical students: a scoping review.

BACKGROUND: Effective Interprofessional Communication (IPC) between healthcare professionals enhances teamwork and improves patient care. Yet IPC training remains poorly structured in medical schools. To address this gap, a scoping review is proposed to study current IPC training approaches in medical schools. METHODS: Krishna's Systematic Evidence Based Approach (SEBA) was used to guide a scoping review of IPC training for medical students published between 1 January 2000 to 31 December 2018 in PubMed, ScienceDirect, JSTOR, Google Scholar, ERIC, Embase, Scopus and PsycINFO. The data accrued was independently analysed using thematic and content analysis to enhance the reproducibility and transparency of this SEBA guided review. RESULTS: 17,809 titles and abstracts were found, 250 full-text articles were reviewed and 73 full text articles were included. Directed Content analysis revealed 4 categories corresponding to the levels of the Miller's Pyramid whilst thematic analysis revealed 5 themes including the indications, stages of trainings and evaluations, content, challenges and outcomes of IPC training. Many longitudinal programs were designed around the levels of Miller's Pyramid. CONCLUSION: IPC training is a stage-wise, competency-based learning process that pivots on a learner-centric spiralled curriculum. Progress from one stage to the next requires attainment of the particular competencies within each stage of the training process. Whilst further studies into the dynamics of IPC interactions, assessment methods and structuring of these programs are required, we forward an evidenced based framework to guide design of future IPC programs.

Structuring Mentoring in Medicine and Surgery. A Systematic Scoping Review of Mentoring Programs Between 2000 and 2019.

INTRODUCTION: Evidence of novice mentoring's successes in having senior clinicians support junior doctors and/or medical students in their clinical, academic, and research goals has spurred efforts to include mentoring in the core medical curriculum. However, lack of effective structuring threatens the viability of mentoring programs, precipitating ethical concerns about mentoring. This review aims to answer the question "what is known about mentoring structures in novice mentoring among medical students and junior doctors in medicine and surgery postings?," which will guide the design of a consistent structure to novice mentoring. METHODS: Levac (2010)'s framework was used to guide this systematic scoping review of mentoring programs in medicine and surgery published between 1 January 2000 and 31 December 2019 in PubMed, ScienceDirect, ERIC, Embase, Scopus, Mednar, and OpenGrey. A "split approach" involving concurrent independent use of a directed content analysis and thematic approach was used to analyze included articles. RESULTS: Three thousand three hundred ninety-five abstracts were identified. There was concordance between the 3 themes and categories identified in analyzing the 71 included articles. These were the host organization, mentoring stages, and evaluations. CONCLUSION: The data reveal the need for balance between ensuring consistency and flexibility to meet the individual needs of stakeholders throughout the stages of the mentoring process. The Generic Mentoring Framework provides a structured approach to "balancing" flexibility and consistency in mentoring processes. The Generic Mentoring Framework is reliant upon appropriate, holistic, and longitudinal assessments of the mentoring process to guide adaptations to mentoring processes and ensure effective support and oversight of the program.

A systematic scoping review of ethical issues in mentoring in medical schools.

BACKGROUND: Mentoring provides mentees and mentors with holistic support and research opportunities. Yet, the quality of this support has been called into question amidst suggestions that mentoring is prone to bullying and professional lapses. These concerns jeopardise mentoring's role in medical schools and demand closer scrutiny. METHODS: To better understand prevailing concerns, a novel approach to systematic scoping reviews (SSR) s is proposed to map prevailing ethical issues in mentoring in an accountable and reproducible manner. Ten members of the research team carried out systematic and independent searches of PubMed, Embase, ERIC, ScienceDirect, Scopus, OpenGrey and Mednar databases. The individual researchers employed 'negotiated consensual validation' to determine the final list of articles to be analysed. The reviewers worked in three independent teams. One team summarised the included articles. The other teams employed independent thematic and content analysis respectively. The findings of the three approaches were compared. The themes from non-evidence based and grey literature were also compared with themes from research driven data. RESULTS: Four thousand six titles were reviewed and 51 full text articles were included. Findings from thematic and content analyses were similar and reflected the tabulated summaries. The themes/categories identified were ethical concerns, predisposing factors and possible solutions at the mentor and mentee, mentoring relationship and/or host organisation level. Ethical concerns were found to stem from issues such as power differentials and lack of motivation whilst predisposing factors comprised of the mentor's lack of experience and personality conflicts. Possible solutions include better program oversight and the fostering of an effective mentoring environment. CONCLUSIONS: This structured SSR found that ethical issues in mentoring occur as a result of inconducive mentoring environments. As such, further studies and systematic reviews of mentoring structures, cultures and remediation must follow so as to guide host organisations in their endeavour to improve mentoring in medical schools.

Thermal bleaching of BACs in bismuth/erbium co-doped fiber fabricated through 3D silica lithography.

Bismuth/erbium co-doped optical fiber fabricated through 3D silica lithography is thermally treated with various conditions. Then the thermal treatment effect on bismuth active centers (BACs) in this fiber is investigated. The thermal bleaching of the BAC associated with Al and the BAC associated with Si is observed after thermal treatment at high temperatures (300°C-800°C). It is found that the absorption and luminescence of BACs dramatically decrease after the thermal treatment, even totally bleaching at 700°C. The results show that the temperature and dwell time have significant effects on the thermal bleaching and activation of BACs. The underlying mechanisms of these thermal-induced effects are further discussed.

Impact of Al2O3 doping on Bi active center photobleaching in Bi/Er-codoped fibers.

In this Letter, the impact of Al2O3 doping on the Bi active center (BAC) photobleaching is investigated in Bi/Er-codoped fibers (BEDFs). By measuring the evolution of emission attributed to the BAC associated with silica (BAC-Si) at ∼1400nm, the linear relationship between the ratio of unbleached/bleached part (γUB/γB) and 830 nm irradiation intensity (P830) was revealed in the log-log plot. The experimental results demonstrate that Al2O3 doping or its induced defects could be one key factor exaggerating the BAC photobleaching in BEDFs.

Evaluating assessment tools of the quality of clinical ethics consultations: a systematic scoping review from 1992 to 2019.

BACKGROUND: Amidst expanding roles in education and policy making, questions have been raised about the ability of Clinical Ethics Committees (CEC) s to carry out effective ethics consultations (CECons). However recent reviews of CECs suggest that there is no uniformity to CECons and no effective means of assessing the quality of CECons. To address this gap a systematic scoping review of prevailing tools used to assess CECons was performed to foreground and guide the design of a tool to evaluate the quality of CECons. METHODS: Guided by Levac et al's (2010) methodological framework for conducting scoping reviews, the research team performed independent literature reviews of accounts of assessments of CECons published in six databases. The included articles were independently analyzed using content and thematic analysis to enhance the validity of the findings. RESULTS: Nine thousand sixty-six abstracts were identified, 617 full-text articles were reviewed, 104 articles were analyzed and four themes were identified - the purpose of the CECons evaluation, the various domains assessed, the methods of assessment used and the long-term impact of these evaluations. CONCLUSION: This review found prevailing assessments of CECons to be piecemeal due to variable goals, contextual factors and practical limitations. The diversity in domains assessed and tools used foregrounds the lack of minimum standards upheld to ensure baseline efficacy. To advance a contextually appropriate, culturally sensitive, program specific assessment tool to assess CECons, clear structural and competency guidelines must be established in the curation of CECons programs, to evaluate their true efficacy and maintain clinical, legal and ethical standards.

Thermal Stability of Type II Modifications by IR Femtosecond Laser in Silica-based Glasses.

Femtosecond (fs) laser written fiber Bragg gratings (FBGs) are excellent candidates for ultra-high temperature (>800 ºC) monitoring. More specifically, Type II modifications in silicate glass fibers, characterized by the formation of self-organized birefringent nanostructures, are known to exhibit remarkable thermal stability around 1000 ºC for several hours. However, to date there is no clear understanding on how both laser writing parameters and glass composition impact the overall thermal stability of these fiber-based sensors. In this context, this work investigates thermal stability of Type II modifications in various conventional glass systems (including pure silica glasses with various Cl and OH contents, GeO2-SiO2 binary glasses, TiO2- and B2O3-doped commercial glasses) and with varying laser parameters (writing speed, pulse energy). In order to monitor thermal stability, isochronal annealing experiments (Δt⁓ 30 min, ΔT⁓ 50 ºC) up to 1400 ºC were performed on the irradiated samples, along with quantitative retardance measurements. Among the findings to highlight, it was established that ppm levels of Cl and OH can drastically reduce thermal stability (by about 200 ºC in this study). Moreover, GeO2 doping up to 17 mole% only has a limited impact on thermal stability. Finally, the relationships between glass viscosity, dopants/impurities, and thermal stability, are discussed.

Nurturing professionalism in medical schools. A systematic scoping review of training curricula between 1990-2019.

Introduction: Professionalism is an evolving, socioculturally informed multidimensional construct that influences doctor-patient relationships, patient satisfaction and care outcomes. However, despite its clinical significance there is little consistency in how professionalism is nurtured amongst medical students. To address this gap a systemic scoping review of nurturing professionalism in medical schools, is proposed.Methods: Levac's framework and the PRISMA-P 2015 checklist underpinned a 6-stage systematic review protocol. Concurrent use of Braun and Clarke's approach to thematic analysis and directed content analysis was used to identify the key elements in nurturing professionalism.Results: 13921 abstracts were identified from six databases, 854 full-text articles reviewed, and 162 full-text included articles were included. The 4 themes identified through thematic analysis are consistent with findings of the directed content analysis. These were the definition of professionalism, the approaches, content, barriers and enablers to teaching professionalism.Conclusion: Informed by a viable definition of professionalism and clear milestones nurturing professionalism nurturing professionalism begins with culturally appropriate training in clinical competence, humanistic qualities and reflective capacity. This process requires effective evaluations of professional identity formation, and the impact of the learning environment underlining the need for longitudinal assessments of the training process.