bluuebunny/crossref_metadata_2025 huggingface dataset:
Podcasting and ethics: Independent podcast production in New Zealand
Authors: Tennant Lewis
Published: July 2023

In New Zealand – like in the US and UK – independently produced podcasts fall outside of local media regulations. New Zealand’s media laws and regulatory bodies remain broadcast and legacy media-focussed, so podcast content that has not been previously broadcast is not regulated or otherwise overseen. In the absence of regulation, this study explores the ways nine independent podcast producers from New Zealand self-govern their content, as well as their motivations for doing so. It is an investigation of the ways ‘amateur’ content producers approach media ethics, and more broadly podcast production in practice. Not guided or bound by formal publishing or editorial responsibilities, and mostly with no formal media training, study participants demonstrate adherence to journalistic principles. They consider ethical and editorial quandaries as they arise during the production process, factoring in the needs and disposition of their audience. This process is informed by their worldview, as well as their perspectives and experiences as media consumers. Though these podcasters champion the ethos of independent podcasting, the content of their shows is not free from third party influence. These podcasters are also parents, partners, employees, and colleagues; life roles that inform the content of their show. Though they push back against podcasting being legislated, these podcasters see value in creating an informal set of guidelines or a voluntary code of practice for podcasting in New Zealand. This project contributes to ongoing explorations of independent podcasting and podcasting practice, focussing on what defines, motivates, and informs self-driven practitioners.
Complex posttraumatic stress disorder in adolescence: A two-year follow-up study
Authors: Kazlauskas Evaldas , Kairyte Agniete , Zelviene Paulina
Published: July 2023

Background

Complex posttraumatic stress disorder is a new diagnosis in the 11th edition of the International Classification of Diseases (ICD-11). There is a need for a better understanding of complex PTSD in children and adolescents.

Objective

The study aimed to estimate the factors associated with chronic complex PTSD versus recovery of complex PTSD in adolescents in a 2-year follow-up study.

Method

In total, 66 adolescents, mean age 14.5, 73% female, identified as having complex PTSD using self-report at baseline recruited from a general population sample, were included in the study. The International Trauma Questionnaire - Child and Adolescent Version (ITQ-CA) was used for the assessment of complex PTSD.

Results

Overall, 36% of the study sample has been identified as having chronic complex PTSD over 2 years, 10% met the criteria for PTSD at a 2-year follow-up, and 54% recovered. A higher risk for chronic complex PTSD was associated with exposure to more traumatic events and more life-stressors over the 2 years, low social network, low positive social support, bullying at school, and loneliness.

Conclusion

The study found that around one-third of the traumatized youth had a prolonged trajectory of complex PTSD symptoms, which were associated with negative life experiences and social difficulties.
The lack of succession HR planning in law enforcement agencies
Authors: Papaioannou Konstantinos G. , Serdaris Panagiotis K.
Published: July 2023

This article examines the implementation of succession human resources (HR) planning in law enforcement agencies. Α quantitative–descriptive survey was carried out, and questionnaires were completed by 302 executives from Greek law enforcement agencies (Hellenic Police and Hellenic Coastguard), through random sampling. The survey highlighted severe concerns, reflecting a lack of implementation of succession HR planning in both agencies. Succession HR planning, defined as the timely handling of personnel needs (qualitative–quantitative) required for the organization to maintain its performance at high levels, is applied to a minimum extent in the Hellenic Police and Hellenic Coastguard. It seems that these organizations do not follow a specific plan to cover their needs in personnel or other operational matters. The study makes a significant contribution on a theoretical and practical level. The research exposes the problem of the non-implementation of succession HR planning in law enforcement agencies. Using the data highlighted by this study, these agencies will be able to implement HR planning to maximize personnel performance and respond to the crucial role they play in society. Future research in law enforcement agencies over the wider area of Greece or other countries should be conducted to draw more representative conclusions.
Period-refined CYCBD using time synchronous averaging for the feature extraction of bearing fault under heavy noise
Authors: Miao Yonghao , Shi Huifang , Li Chenhui , Hua Jiadong , Lin Jing
Published: July 2023

Deconvolution methods have been widely used in machinery fault diagnosis. However, their application would be confined due to the heavy noise and complex interference since the fault feature in the measured signal becomes rather weak. Time synchronous averaging (TSA) can enhance the periodic components and suppress the others by the comb filter function. And in the iteration process of the deconvolution methods, the filtered signal after each iteration can be further processed using TSA, and the time delay with maximum Gini index value is refined as the iterative period for the next iteration. Benefitting from these advantages, a period-refined maximum second-order cyclostationarity blind deconvolution (PRCYCBD) using TSA is proposed for the weak fault detection of rolling element bearings (REBs) in this paper. Firstly, without any prior knowledge, the proposed method which can estimate the period more accurately is more suitable for the weak fault detection of REBs, especially incipient fault. Secondly, TSA is firstly applied to estimate the iterative period rather than just depending on the Signal Noise Ratio (SNR) of the filtered signal in the iterative process . Furthermore, the new improvement frame can be expanded to other deconvolution methods using iterative algorithms, especially under heavy noise. Finally, a simulation with a slight bearing fault as well as two real experimental data including the vibration signal with the wind turbine bearing fault and the acoustical signal with the locomotive wheel bearing fault is used to verify the superiority of the proposed PRCYCBD compared with the traditional minimum entropy deconvolution and the traditional autocorrelation-improved cyclostationarity blind deconvolution.
Moderating online child sexual abuse material (CSAM): Does self-regulation work, or is greater state regulation needed?
Authors: Bleakley Paul , Martellozzo Elena , Spence Ruth , DeMarco Jeffrey
Published: July 2023

Social media platforms are crucial public forums connecting users around the world through a decentralised cyberspace. These platforms host high volumes of content and, as such, employ content moderators (CMs) to safeguard users against harmful content like child sexual abuse material (CSAM). These roles are critical in the social media landscape however, CMs’ work as “digital first responders” is complicated by legal and systemic debates over whether the policing of cyberspace should be left to the self-regulation of technology companies, or if greater state-regulation is required. In this empirical policy and literature review, major debates in the area of content moderation and, in particular, the online policing of CSAM are identified and evaluated. This includes the issue of territorial jurisdiction, and how it obstructs traditional policing; concerns over free speech and privacy if CMs are given greater powers, and debates over whether technology companies should be legally liable for user-generated content (UGC). In outlining these issues, a more comprehensive foundation for evaluating current practices for monitoring and combatting online CSAM is established which illustrates both the practical and philosophical challenges of the existing status quo, wherein the state and private companies share these important responsibilities.
Type 2 Endoleak Detection After Endovascular Aneurysm Repair: Can Low-Flow Endoleaks Also Be Visualized in Silicon-Photomultiplier-Based Positron Emission Tomography/Computed Tomography Scans?
Authors: Harigai Ayaka , Toyama Yoshitaka , Umetsu Michihisa , Takanami Kentaro , Takase Kei
Published: July 2023

Purpose:

To present a novel clinical application of silicon-photomultiplier-based positron emission tomography (SiPM-based PET)/computed tomography (CT), detecting a type II endoleak 5 years after endovascular aneurysm repair (EVAR).

Technique:

SiPM-based PET/CT scans with a standard whole-body protocol were performed for a 73-year-old man with a past medical history of abdominal aortic aneurysms treated with EVAR and currently under investigation of his duodenal papillary carcinoma. The PET/CT demonstrated 18F-fluorodeoxyglucose (FDG) accumulation outside the stent graft in the native sac of the aneurysm. The site of accumulation corresponded to that of the contrast enhancement depicted in the CT angiography taken 1 month earlier. Another CT scan performed 3 months later revealed enlargement of the aneurysm.

Conclusion:

SiPM-based PET/CT, with its superior sensitivity and spatial resolution over conventional PET/CT, can detect type II low-flow endoleaks.

Clinical Impact

Abnormal intra-aneurysmal FDG activity incidentally detected on SiPM-based PET/CT is worthy of attention because it may be indicative of endoleaks. Additional imaging using different modalities should be considered so that the patient would not miss the additional treatment opportunity upon observing sac enlargement. For patients with contraindications for iodine CT contrast media, SiPM-based PET/CT would serve as a suitable alternative.
Developing a Blast Injury Modeling Capability: Application of Concepts from the Defense M&S Domain
Authors: Byrne Ryan , Davis Nichole , Gupta Raj , Santago Anthony , Tolk Andreas
Published: July 2023

Increases in computational power have contributed to growing interest in using modeling and simulation (M&S) to better understand and address blast injury for US service members. The development of an M&S capability that can comprehensively simulate human injury, lethality, and impairment due to blast injury threats in the military environment requires a large, coordinated integration of many models and simulations. This contribution describes how various lessons learned from the defense M&S domain were used to support the future development of an envisioned Modeling Capability for blast injury by providing simulation functionality for simulation-based experimentation. It first addresses conceptually the interoperability challenges when more than one simulation can be or must be applied and possibly composed for the experiment. This leads to the development of a proposed concept of operations for the application of the Modeling Capability and the development of a framework of services needed to allow the identification of an applicable simulation solution, selecting the subset of those simulations, composing them for the experiment, and assessing the results. As a nascent endeavor, anticipated challenges for implementing these concepts are discussed, leveraging lessons learned regarding interoperability, composability, use of services, repositories, and development of simulation compositions to conduct simulation-based experiments.
Hospital-Based Food Environment Interventions to Improve Workforce Dietary Behaviour: A Systematic Literature Review
Authors: al-Tamimi Kawther , van Herwerden Louise , Abdul Malika , Utter Jennifer
Published: July 2023

The aim of this study was to determine the effectiveness of hospital-based interventions in improving eating patterns and food purchasing behaviours of hospital staff. Four electronic databases were searched from inception to November 2021 for intervention studies conducted within hospital retail food environments. Studies assessing outcomes pertaining to changes in eating patterns and/or food purchasing behaviour were included. Intervention effectiveness was defined as a statistically significant change in primary outcomes. Study quality was assessed independently by two researchers using the Mixed-Methods Appraisal Tool. In total, 20 studies were included in the review. 10 studies were moderate to low quality and almost half of the included studies (n = 9) utilised a quantitative descriptive design. Intervention modes included signage and health labels (n = 17), price modifications (n = 9), recipe modifications (n = 7), choice architecture (n = 5), altering healthy food availability (n = 5) and cooking processes (n = 1). Most studies (n = 15) contained more than one intervention type within their intervention design. Significant improvements in all primary outcomes were identified within eight studies, in which all had included a point-of-purchase prompt. Multicomponent interventions that incorporate point-of-purchase prompts may be useful in improving eating patterns and/or food purchasing behaviour of hospital staff. Further rigorous research identifying the long-term effectiveness of these interventions on improving health outcomes is warranted.
Implementing Lifestyle Medicine in Undergraduate Medical Education at Riphah International University, Pakistan
Authors: Sadiq Tahira , ul Hassan Maqsood , Feroz Shagufta
Published: July 2023

The Need of the LM content in Medical undergraduate curriculum was imperative based on the mortality and morbidity statistics in Pakistan along with lack of LM training and unhealthy lifestyle of physicians themselves. Aims and Objectives for integrating LM content were designed including cognitive, affective and psychomotor domains of learning. while embedding LM content in an integrated modular system, every step was technically monitored and matched with the academic year, teaching methodology and importance of the topic. LM content was integrated in every educational activity from first to final year by adding or modifying LM learning objectives. The alignment of learning domains was in accordance with the teaching and assessment strategies. Teaching methods chosen were according to the designed learning objectives and phase of curriculum. LM content was assessed in formative and summative assessment through, single best and case cluster MCQs, reflections, OSPE. LM curriculum was communicated to teaching faculty and medical students through academic calendar, module guides and timetables. It was shared on Moodle and Teams. Educational environment incorporated both physical and virtual learning and has been supportive of lifestyle practices among medical students. The entire process of embedding LM content in medical education has been multifaceted. Different committees were formed including Steering, Core, implementation, and Evaluation Committees. Students were part of each committee. This write-up describes the evidence-based approach used to embed LM content in Undergraduate Medical Education and offers guidance to other undergraduate medical colleges that may wish to implement lifestyle medicine content.
TrustScapes: A Visualisation Tool to Capture Stakeholders’ Concerns and Recommendations About Data Protection, Algorithmic Bias, and Online Safety
Authors: Ito-Jaeger Sachiyo , Lane Giles , Dowthwaite Liz , Webb Helena , Patel Menisha , Rawsthorne Mat , Portillo Virginia , Jirotka Marina , Perez Vallejos Elvira
Published: July 2023

This paper presents a new methodological approach, TrustScapes, an open access tool designed to identify and visualise stakeholders’ concerns and policy recommendations on data protection, algorithmic bias, and online safety for a fairer and more trustworthy online world. We first describe how the tool was co-created with young people and other stakeholders through a series of workshops. We then present two sets of TrustScapes focus groups to illustrate how the tool can be used, and the data analysed. The paper then provides the methodological insights, including the strengths of the TrustScapes and the lessons for future research using TrustScapes. A key strength of this method is that it allows people to visualise their ideas and thoughts on the worksheet, using the keywords and sketches provided. The flexibility in the mode of delivery is another strength of the TrustScapes method. The TrustScapes focus groups can be conducted in a relatively short time (1.5–2 hours), either in person or online depending on the participants’ needs, geological locations, and practicality. Our experience with the TrustScapes offers some lessons (related to the data collection and analysis) for researchers who wish to use this method in the future. Finally, we describe how the outcomes from the TrustScapes focus groups should help to inform future policy decisions.
Noise level effect on the hypersonic boundary layer
Authors: Sha Xinguo , Yuan Xiangjiang , Shi Xiaotian , Gao Jun , Ji Feng
Published: July 2023

The boundary layer state has a critical effect on hypersonic vehicle performance and the noise level is the main factor causing the differences between the boundary layer transition in a wind tunnel test and that in a real flight. The second mode wave frequency of the 7° half-angle cone models as measured in four hypersonic wind tunnels is collected. The effects of the noise level on the boundary layer are determined by comparing dimensionless parameters, which are nondimensionalized based on computed values. The results indicate that the noise level could affect the second mode wave frequency and the boundary layer thickness, where the second mode wave frequency decreases and the boundary layer thickness increases with increasing noise level. However, the mechanism by which the noise level influences the second mode wave frequency and the boundary layer thickness requires further study.
Examining the effect of expected test format and test difficulty on the frequency and mnemonic costs of mind wandering
Authors: Laursen Skylar J , Wammes Jeffrey D , Fiacconi Chris M
Published: July 2023

Mind wandering, generally defined as task-unrelated thought, has been shown to constitute between 30% and 50% of individuals’ thoughts during almost every activity in which they are engaged. Critically, however, previous research has shown that the demands of a given task can lead to either the up- or down-regulation of mind wandering and that engagement in mind wandering may be differentially detrimental to future memory performance depending on learning conditions. The goal of the current research was to gain a better understanding of how the circumstances surrounding a learning episode affect the frequency with which individuals engage in off-task thought, and the extent to which these differences differentially affect memory performance across different test formats. Specifically, while prior work has manipulated the conditions of encoding, we focused on the anticipated characteristics of the retrieval task, thereby examining whether the anticipation of later demands imposed by the expected test format/difficulty would influence the frequency or performance costs of mind wandering during encoding. Across three experiments, we demonstrate that the anticipation of future test demands, as modelled by expected test format/difficulty, does not affect rates of mind wandering. However, the costs associated with mind wandering do appear to scale with the difficulty of the test. These findings provide important new insights into the impact of off-task thought on future memory performance and constrain our understanding of the strategic regulation of inattention in the context of learning and memory.
The Most Remarkable Dressing Room in Stageland: Cyril Maude's Greasepaint Gallery in the Theatre Royal, Haymarket
Authors: Anderson Anne , Whelan Robert
Published: July 2023

An office on the first floor of the Theatre Royal, Haymarket has six images painted directly on the walls that have remarkably survived many redecorations. This room was actor-manager Cyril Maude's dressing room between 1896 and 1905 when he was joint manager of the Theatre Royal alongside Frederick Harrison. To its fullest extent, Maude's exceptional dressing room was adorned with a gallery of forty images created in greasepaint by fellow actors and friends. Famous cartoonists Phil May, Harry Furniss, Bernard Partridge, Leonard Raven-Hill and Leslie Ward left their mark. The greasepaint gallery can be read as an extension of the fashion for collecting autographs; most of the images were signed and some dated. Equally, the gallery acts as a nostalgic scrapbook commemorating productions and recording famous visitors who were granted entrée behind the scenes. The gallery signalled Maude's standing in artistic, literary and social circles and thereby reinforced his own celebrity status.
Clinical evidence of the association between radial longitudinal deficiency and radial polydactyly: a case series
Authors: Mohan Monusha , Sabapathy S Raja
Published: July 2023

Radial longitudinal deficiency (RLD) is commonly associated with thumb hypoplasia. The association between RLD and radial polydactyly (RP) is uncommon, but case reports or case series have been reported. We report our experience of managing patients with this association. A total of 97 patients with RLD were seen in our department, of which six were children with concomitant RLD and RP. Four children had both RLD and RP in the same limb; of them, three also had RLD in the contralateral limb. The mean age at presentation was 11.6 months. Awareness of this association alerts the clinician to look for RLD in the presence of RP and vice versa. This case series supports recent experimental and clinical evidence that RP and RLD may be part of the same developmental spectrum. Further studies may guide its inclusion as a possible new category in the Oberg-Manske-Tonkin (OMT) classification of congenital upper-limb anomalies.

Level of evidence: IV
Effect of umifenovir (arbidol) versus standard care on clinical outcome in patients with COVID-19: a retrospective cohort study
Authors: Yi Wanwan , Jia Chengyou , Yang Ziyu , Fan Hengwei , Li Ming , Lv Zhongwei
Published: July 2023

Background:

Coronavirus disease 2019 (COVID-19) continues to spread quickly throughout the world, mainly due to the lack of effective drug therapies and vaccines. The effectiveness of the antiviral drug umifenovir needs to be further clarified.

Methods:

This retrospective cohort study included 1254 patients who were diagnosed with COVID-19 between February 19 and April 5, 2020 in Hubei Maternity and Child Health Hospital. They were divided into umifenovir group ( n = 760, 60.60%) and control group ( n = 496) without using umifenovir. The primary endpoint was a composite of intubation or death in a time-to-event analysis. The clinical outcomes were compared between the two groups using multivariable Cox analysis with inverse probability weighting according to the propensity score.

Results:

A total of 760 (60.60%) patients received umifenovir, and 496 patients did not do so. Of the enrolled patients, 1049 (83.65%) had mild or moderate COVID-19, and the remaining 205 had severe or critical COVID-19. The mortality rate in the umifenovir group was 2.76% (21/760) versus 2.02% (10/494) in the control group. In terms of treatment outcomes, the discharge status of the patients in the umifenovir group was no better than that in the control group after propensity score matching ( n = 485 in each group). In addition, the respiratory rate, a severe condition, or critical condition of the disease were the three main risk factors affecting the endpoint of death ( p = 0.0028, p = 0.0009 and p < 0.0001, respectively).

Conclusion:

This retrospective cohort study showed that oral administration of umifenovir alone did not improve outcomes for patients with COVID-19.
Dysphagia
Authors: Owen Miss Amy , Williams Miss Lisa , Moorhouse Mr Tobias Edward
Published: July 2023

Swallowing is a complex interplay of nerves, muscles and protective reflexes which involves both involuntary and voluntary phases. Difficulty swallowing can occur due to a variety of underlying pathologies, but can broadly be differentiated into high (oropharyngeal) and low (oesophageal) dysphagia. Using case scenarios this article will highlight common dysphagia presentations encountered in general practice and their appropriate history, examination, investigation and management.
Smoking and mental health conditions: What you need to know
Authors: A. Chew-Graham Professor Carolyn , Shiers Dr David , Johnston Mr Gordon , Farley Dr Amanda , Burn Professor Wendy , Clark Dr Mike , Campion Dr Jonathan
Published: July 2023

Smoking is the largest single cause of preventable death and accounted for 74,600 deaths in 2019–20. One of the targets in the England Tobacco Control Plan is that the population prevalence of smoking will reach less than 5% of the population. The key to achieving this will be addressing smoking in societal groups where rates are stubbornly high, such as people with mental health conditions. People with mental health problems experience disproportionate levels of tobacco-associated harm, alongside wider social and economic impacts. Primary care can help tackle this health inequality.
The Importance of Green Certification Labels/Badges in Online Hotel Booking Choice: A Conjoint Investigation of Consumers’ Preferences Pre- and Post-COVID-19
Authors: Assaker Guy , O’Connor Peter
Published: July 2023

In light of travelers’ growing preference for sustainable hotel accommodation, this study investigated the relative importance of green certification labels/badges in online hotel selection/booking choice. A conjoint analysis was performed on seven online hotel attributes (including green certification labels/badges) in two specific scenarios (imagining they were booking in a pre- and post-COVID-19 setting) using 270 U.S. subjects surveyed in April 2020. The results revealed that green certification labels/badges do impact travelers’ online hotel booking choice, but not as much as cancellation policies, hotel rating, price, and location. Price in particular exerted a greater influence on travelers’ booking preferences in the post-COVID-19 scenario. Yet, a significant percentage of travelers (around 40% in both scenarios) were willing to pay more for a hotel with green certification. These results contribute to our theoretical and practical understanding of the factors that influence online hotel booking, as well as the power of green certification labels/badges in driving online hotel bookings in the pre-and post-COVID-19 contexts.
Early Detection of COVID-19 in Female Athletes Using Wearable Technology
Authors: Rentería Liliana I. , Greenwalt Casey E. , Johnson Sarah , Kviatkovsky Shiloah A. , Dupuit Marine , Angeles Elisa , Narayanan Sachin , Zeleny Tucker , Ormsbee Michael J.
Published: July 2023

Background:

Heart rate variability (HRV), respiratory rate (RR), and resting heart rate (RHR) are common variables measured by wrist-worn activity trackers to monitor health, fitness, and recovery in athletes. Variations in RR are observed in lower-respiratory infections, and preliminary data suggest changes in HRV and RR are linked to early detection of COVID-19 infection in nonathletes.

Hypothesis:

Wearable technology measuring HRV, RR, RHR, and recovery will be successful for early detection of COVID-19 in NCAA Division I female athletes.

Study Design:

Cohort study.

Level of Evidence:

Level 2.

Methods:

Female athletes wore WHOOP, Inc. bands through the 2020 to 2021 competitive season. Of the athletes who tested positive for COVID (n = 33), 14 had enough data to be assessed (N = 14; 20.0 ± 1.3 years; 69.8 ± 7.2 kg; 172.0 ± 8.3 cm). Roughly 2 weeks of noninfected days were used to set baseline levels of HRV, RR, recovery, and RHR to compare with -3, -2, and -1 days before a positive COVID-19 result.

Results:

Increases in RR ( P = 0.02) were detected on day -3. RHR ( P < 0.01) and RR increased ( P < 0.01), while HRV decreased ( P < 0.05) on day -1, compared with baseline. Differences were noted in all variables on the day of the positive COVID-19 result: decreased HRV ( P < 0.05) and recovery scores ( P < 0.01), and increased RHR ( P < 0.01) and RR ( P < 0.01).

Conclusion:

In female athletes, wearable technology was successful in predicting COVID-19 infection through changes in RR 3 days before a positive test, and also HRV and RHR the day before a positive test.

Clinical Relevance:

Wearable technology may be used, as part of a multifaceted approach, for the early detection of COVID-19 in elite athletes through monitoring of HRV, RR, and RHR for overall team health.
Magnetically Controlled 3D Cartilage Regeneration
Authors: Chen Xia , Zhang Ruhong , Zhang Qun , Xu Zhicheng , Xu Feng , Li Datao , Li Yiyuan
Published: July 2023

Objective

The cartilage regeneration field has not yet overcome the issue of effective “shaping”: growing regenerated cartilage in the desired shape, and maintaining that shape, is problematic. This study reports on a new method of cartilage regeneration in which the cartilage is shaped in three dimensions. Since cartilage is composed only of cartilage cells and an abundant extracellular matrix with no blood circulation, once it is damaged, the lack of nutrient supply means that it is difficult to repair. Scaffold-free cell sheet technology plays an important role in cartilage regeneration, avoiding inflammation and immune response caused by scaffold materials. However, cartilage regenerated from the cell sheet needs to be sculpted and shaped before it can be used for cartilage defect transplantation.

Design

In this study, we used a new ultra-strong magnetic-responsive Fe3O4 nanoparticle (MNP) to shape the cartilage in vitro. Super-magnetic Fe3O4 microspheres are manufactured by co-assembling negatively charged Cetyltrimethylammonium bromide (CTAB) and positively charged Fe3+ under solvothermal conditions.

Results

The Fe3O4 MNPs are swallowed by chondrocytes, and the MNP-labeled chondrocytes are acted upon by the magnetic field. The predetermined magnetic force makes the tissues coalesce to form a multilayer cell sheet with a predetermined shape. The shaped cartilage tissue is regenerated in the transplanted body, and the nano magnetic control particles do not affect cell viability. The nanoparticles in this study improve the efficiency of cell interaction through super-magnetic modification, and to a certain extent change the way the cells absorb magnetic iron nanoparticles. This phenomenon allows a more orderly and compact alignment of the cartilage cell extracellular matrix, promotes ECM precipitation and cartilage tissue maturation, and improves the efficiency of cartilage regeneration.

Conclusion

The magnetic bionic structure, which contains specific magnetic particle-labeled cells, is deposited layer by layer to generate a three-dimensional structure with repair function, and further induce the production of cartilage. This study describes a new method for the regeneration of tissue engineered cartilage which has broad application prospects in regenerative medicine.
Quasi-static compressive performance of 3D printed polymer composite cellular cubic structures-An experimental study
Authors: Praveen Kumar A , Ma Quanjin
Published: July 2023

Light weight cellular structures have gained extensive attention in the impact energy absorption applications owing to their superior specific strength and excellent crashworthiness characteristics. The main objective of the present research work is to utilize this benefit to tailor and to improve the structural design and material type of cellular structures for crashworthiness applications. Cubic structures with four different types of design patterns such as concave, convex, hyperbola, and hexagon were proposed and fabricated through three-dimensional (3D) printing technique. Four polymeric filament materials such as Poly lactic acid (PLA), Acrylonitrile butadiene styrene (ABS), PLA mixed carbon fiber (PLA/CF), and Polyethylene terephthalate glycol (PETG), mixed carbon fiber (PETG/CF) were utilized. Accordingly, the compression tests were performed on the fabricated cellular cubic structures under quasi-static loading to examine the effect of design pattern, and material types on the compressive behavior and energy absorbing characteristics. The results revealed that the convex design pattern of 3D printed PETG/CF cubic structure showed the significant energy absorbing characteristics compared to the other three design patterns. It is emphasized that the proposed 3D printed cubic cellular structures have great prospective to substitute the traditional energy absorbing structures in automotive vehicles and high speed trains.
Is there a causal relationship between hypothyroidism and hyponatremia?
Authors: Chen Julie
Published: July 2023

Hyponatremia is one of the most common lab abnormalities seen in clinical practice. It has become widely accepted that hypothyroidism is a cause of euvolemic hyponatremia. The primary mechanism is thought to be due to impaired free water excretion and changes in sodium handling in the kidney. However, the clinical studies are conflicting and do not definitively confirm the association between hypothyroidism and hyponatremia. Therefore, if severe hyponatremia occurs in a patient without myxedema coma, other potential etiologies should be sought.
Atrial standstill associated with lamin A/C mutation: A case report
Authors: Zhang Yujiao , Zhang Yong , Ren Manyi , Xue Minghua , Hu Chunying , Hou Yinglong , Li Zhiyuan , Qu Haiyan , Moreira Paulo
Published: July 2023

The case report shares evidence for a better understanding of atrial standstill. This being a rare arrhythmogenic condition. This is a 46-year-old woman presented with multiple sites of arterial embolism, including lower extremity arteries, coronary artery, and cerebral artery. Unexpectedly, multiple arterial embolization in the patient was due to atrial standstill by transthoracic echocardiography and cardiac electrophysiological study. An additional family investigation revealed that the patient’s brother and sister also suffered from this disease. In search of further understanding the case, we carried out the genetic testing of the family and a frame shift double-G insertion mutation at c.1567 in the LMNA gene was found in all the three individuals. The patient recovered well after anticoagulation therapy and left bundle branch area pacing. This report remarks on the importance of multiple sites of arterial embolism which should be wary of family atrial standstill.
Doing Educational Research by Taking Seriously Chen's Account of “Asia as Method”: In a Korean Case of Modern Schooling
Authors: Kwak (곽덕주) Duck-Joo
Published: July 2023

Purpose

This paper aims to exemplify how Chen's idea of “Asia as method” can be employed in a case study on Korean experiences of modern schooling.

Design/Approach/Methods

It does so by focusing on the author's personal experiences of modern schooling as both a student and a teacher in modern Korea. In this description, the author makes two seemingly contradictory moves: a move toward decolonialization by keeping a critical distance from her own native culture and a move toward deimperialization by keeping her distance from the West.

Findings

This shows the challenges and tensions in the Korean experience of modern schooling as a student or teacher dealing with different moral languages such as Confucian and rationalist or rationalist and post-rationalist.

Originality/Value

This experimental work suggests the possibility of forming a uniquely East Asian subjectivity while showing how educational research in East Asia can be performative in the sense that it changes the way East Asians understand themselves and the world around them.
Perceived Determinants of Smallholder Households’ Resilience to Livelihood Insecurity in Goncha District, Northwest Highlands of Ethiopia
Authors: Debie Ermias , Ayele Amare Wubishet
Published: July 2023

Climate change, hazards to productive assets, social-related shocks, and land productivity reduction are all likely to make poor households less resilient. In Ethiopia’s highlands, the ability to deal with household resilience against poverty in the face of uncertainty is minimal. In the Goncha district of Ethiopia’s Northwest highlands, the study attempts to identify factors of household resilience to livelihood insecurity under crop-livestock mixed agricultural systems. Face-to-face interviews with 280 households were conducted using a structured questionnaire to acquire primary data. The data were analyzed using descriptive statistics, and structural equation modeling. The results revealed that household resilience to livelihood insecurity was significantly influenced by perceptions of sustainable farming practices, the cultivation of more fertile farmland, savings performance, diversification of income-generating activities, intensification of livestock husbandry practices, access to irrigation practice, and familiarity with practical technologies. Hence, scaling up sustainable farming systems and practical technologies, improving saving habits, increasing income diversification, and intensifying agroforestry are perceived to be significant to increase smallholder household resilience to livelihood insecurity over agroecologies.
The Politics of Social Policy in Sub-Saharan Africa: A Configurational Approach to Fee-Free Policies at the High School Level
Authors: Asante Gabriel
Published: July 2023

Governments in Sub-Saharan Africa (SSA) are expanding access to high school education, which is a perpetuation of the previous focus on basic education. This study applies qualitative comparative analysis (QCA) using data from seven countries from 2010 to 2020 to examine the potential conditions of fee-free policies at the high school level. Five potential conditions are analyzed. They include the regime type, electoral competition, ideological lineage, economic conditions, and social context. The findings indicate the significant influence of electoral competition and a high level of lower secondary school enrolment for the adoption of fee-free policies. The absence of electoral competition leads to a lack of fee-free policy. The paper explains how elections, one indicator of representative democracy, motivate political leaders to initiate social policies. Additionally, the study challenges the relevance of two important explanations for expansionary social policy in the literature—the partisan theory of policy outcomes, and the economy.
Breaking the Silence: Examining the Role of Parent Involvement and Concussion Knowledge on Sports-Related Concussion Conversations
Authors: Hartman Daniel E. , Quick Brian L.
Published: July 2023

The current study investigates the role of parents’ concussion knowledge, value-relevant involvement (VRI), outcome-relevant involvement (ORI), and impression-relevant involvement (IRI) on their intentions to communicate with their children about recognizing and reporting sports-related concussions (SRC) symptoms. Among 249 parents of youth athletes between the ages of 9 and 15, SRC knowledge, VRI, and ORI were positively associated with parents' SRC communication intentions, while IRI was a negative predictor. Contrary to our hypotheses, parents with higher IRI were less likely to report SRC communication intentions as knowledge increased. Similarly, as knowledge increased, parents with higher ORI were also less likely to report intentions to communicate with their child about the importance of reporting a SRC. Additionally, parents with lower SRC knowledge were more likely to seek information about communicating with their child about SRCs. The study highlights the importance of considering the interplay between parental involvement and SRC knowledge, as well as underlying factors of SRC parent-child communication. Future research should identify specific goals for SRC communication to optimize educational intervention efforts and maximize the potential impact of communication on SRC reporting rates in youth sports.
Determining the risk factors for hyperglycemia and glucose variability after total knee arthroplasty with continuous glucose monitoring: An observational cohort study
Authors: Leung LH Brian , Chan WK Vincent , Fu Henry , Cheung MH , Cheung Amy , Luk Michelle H , Chan PK , Chiu KY
Published: July 2023

Introduction: Periprosthetic joint infection after total knee arthroplasty (TKA) is a devastating complication and different risk factors, including hyperglycemia and increased glucose variability, have been suggested for this condition in previous literature. Our study aims to investigate the risk factors for postoperative hyperglycemia and glucose variability in patients undergoing unilateral primary TKA with continuous glucose monitoring (CGM) technology. Methods: Demographic factors, diabetic statuses, hemoglobin A1c (HbA1c) levels, and fructosamine levels of patients undergoing unilateral primary TKA were recorded preoperatively. These patients would either received 16 mg intravenous dexamethasone or no dexamethasone before their surgery as part of perioperative management. From the day of admission to postoperative day 4, CGM device monitored these patients’ blood glucose level, time of hyperglycemia, and glucose variability. Correlation and multivariate regression analysis were performed between the risk factors and the outcome measures, with multicollinearity between the predictor variables checked, to find out the most potent risk factors for postoperative hyperglycemia. Results: Eighty-three patients with primary unilateral TKA were analyzed. Diabetic, prediabetic, and nondiabetic patients were composed of 26.5%, 47.0%, and 26.5%, respectively. The average of HbA1c and fructosamine level was 6.0% and 249.3 mmol/L, respectively; 65.1% of the patients received 16 mg dexamethasone perioperatively. Multivariate regression analysis found that HbA1c, fructosamine, and dexamethasone injections are the significant risk factors for the percentage of time in hyperglycemia ( R2 = 0.374, p < 0.001) and average blood glucose level ( R2 = 0.493, p < 0.001), with HbA1c having the highest standardized coefficient, followed by fructosamine and dexamethasone injections. Although dexamethasone usage was significant in multivariate regression analysis on predicting glucose variability, the effect size of the model is very weak ( R2 = 0.05, p < 0.05). Conclusion: The most potent risk factor for hyperglycemic time and increased average blood glucose is HbA1c level, followed by fructosamine level and dexamethasone injections. No strong correlation was found between the factors in our study and patients’ glucose variability.
“A person who do not smoke will not understand a person who smokes and trying to quit…” Insights From Quit Smoking Clinics’ Defaulters: A Qualitative Study
Authors: Mohd Noordin Zakiah , Neoh Chin Fen , Ibrahim@ Ghazali Nor Haizan , Karuppannan Mahmathi
Published: July 2023

This study explored the factors contributing to discontinuation of people who smoke (PWS) from quit smoking clinic prior to achieving 6-month abstinence. Fifteen active PWS were interviewed via telephone and face-to-face. Interviews were audio-recorded, transcribed and analysed using thematic analysis. At individual level, low intrinsic motivation including unreadiness to quit, low self-efficacy and ambivalence on smoking cessation were barriers to attain successful cessation. Influence of extrinsic factors such as work-related factors, social interaction and ill-health burden lead to poor commitment with QSC. At the clinic level, healthcare professional's competency, personal attributes, pharmacotherapy's efficacy, safety and availability were important components that may affect a participant's effort to quit. Working commitment was highlighted as the primary barrier for a successful cessation. Hence, effective intervention and collaborative effort between healthcare facilities and employers are essential to optimise cessation adherence among employees who smoke which subsequently will enhance their abstinence rates.
A centrality measure for grid street network considering sequential route choice behaviour
Authors: Tabata Shota
Published: July 2023

This study proposes a novel centrality measure for a grid network based on pedestrians’ sequential route choices, which we call sequential choice betweenness centrality (SCBC). Although conventional centralities are popular tools for urban network analysis, we must be aware of their meaning in the context of urban planning. This study reinterprets the centralities at the point of pedestrian flow. We then formulate the pedestrian flow distribution based on sequential route choice and develop the SCBC as a function of the probability of going straight at an intersection. The sensitivity analysis shows the probability of minimising the difference between the SCBC and existing centralities while revealing the numerical and spatial features of the SCBC. The more biased the grid proportion, the less similar the SCBC is to the existing ones. Moreover, the SCBC tends to be larger than conventional centralities around the corner nodes of the grid network. The probability parameterises the SCBC to go straight and is related to the pedestrian’s environmental cognition level. This parameterisation enabled us to adapt to the expected pedestrian attribution and perform an in-depth analysis of street networks.
“Everybody is 1% of everything”: Youth ethnoracial positioning and constructing a semiotics of race
Authors: West Gordon Blaine
Published: July 2023

Making meaning in transnational communications involves the use of transmodal resources that go beyond simply written and spoken language. The social semiotics of race, gender, and class also influence these communications, although they are not often accounted for. This study works to better understand the way in which the semiotics of race are constructed and interpreted by youth (aged 9–11) engaged in an educational, transnational communication project designed to improve their English language and technology skills. Drawing from a year-long ethnographic study of the youth participating in the project, I conduct a transmodal narrative analysis to show how the youth use small stories to position themselves and others in relation to ethnoracial identities. Using a micro-analysis of a segment of one meeting in which youth are responding to a video from their peers in Mexico, I show how the stories that emerge are polyphonic, transmodally composed, and work to ultimately position the youth as having a shared ethnoracial identity. In this, they challenge narratives that position them monoracially. The stories help us expand the way we can conceptualize counter-stories and raciolinguistic ideologies as emergent and interactionally constructed.