bluuebunny/crossref_metadata_2025_split huggingface dataset:
Arctic September Sea Ice Concentration Biases in CMIP6 Models and Their Relationships with Other Model Variables
Authors: Frankignoul Claude , Raillard Lea , Ferster Brady , Kwon Young-Oh 
Published: May 2024

Abstract
The models that participated in the Coupled Model Intercomparison Project (CMIP) exhibit large biases in Arctic sea ice climatology that seem related to biases in seasonal atmospheric and oceanic circulations. Using historical runs of 34 CMIP6 models from 1979 to 2014, we investigate the links between the climatological sea ice concentration (SIC) biases in September and atmospheric and oceanic model climatologies. The main intermodel spread of September SIC is well described by two leading EOFs, which together explain ∼65% of its variance. The first EOF represents an underestimation or overestimation of SIC in the whole Arctic, while the second EOF describes opposite SIC biases in the Atlantic and Pacific sectors. Regression analysis indicates that the two SIC modes are closely related to departures from the multimodel mean of Arctic surface heat fluxes during summer, primarily shortwave and longwave radiation, with incoming Atlantic Water playing a role in the Atlantic sector. Local and global links with summer cloud cover, low-level humidity, upper or lower troposphere temperature/circulation, and oceanic variables are also found. As illustrated for three climate models, the local relationships with the SIC biases are mostly similar in the Arctic across the models but show varying degrees of Atlantic inflow influence. On a global scale, a strong influence of the summer atmospheric circulation on September SIC is suggested for one of the three models, while the atmospheric influence is primarily via thermodynamics in the other two. Clear links to the North Atlantic oceanic circulation are seen in one of the models.
Characterizing the 2010 Russian Heat Wave–Pakistan Flood Concurrent Extreme over the Last Millennium Using the Great Eurasian Drought Atlas
Authors: Cook Benjamin I. , Cook Edward R. , Anchukaitis Kevin J. , Singh Deepti 
Published: May 2024

Abstract
During summer 2010, exceptional heat and drought in western Russia (WRU) occurred simultaneously with heavy rainfall and flooding in northern Pakistan (NPK). Here, we use the Great Eurasian Drought Atlas (GEDA), a new 1021-yr tree-ring reconstruction of summer soil moisture, to investigate the variability and dynamics of this exceptional spatially concurrent climate extreme over the last millennium. Summer 2010 in the GEDA was the second driest year over WRU and the largest wet–dry contrast between NPK and WRU; it was also the second warmest year over WRU in an independent 1015-yr temperature reconstruction. Soil moisture variability is only weakly correlated between the two regions, and 2010 event analogs are rare, occurring in 31 (3.0%) or 52 (5.1%) years in the GEDA, depending on the definition used. Post-1900 is significantly drier in WRU and wetter in NPK compared to previous centuries, increasing the likelihood of concurrent wet NPK–dry WRU extremes, with over 20% of the events in the record occurring in this interval. The dynamics of wet NPK–dry WRU events like 2010 are well captured by two principal components in the GEDA, modes correlated with ridging over northern Europe and western Russia and a pan-hemispheric extratropical wave train pattern similar to that observed in 2010. Our results highlight how high-resolution paleoclimate reconstructions can be used to capture some of the most extreme events in the climate system, investigate their physical drivers, and allow us to assess their behavior across longer time scales than available from shorter instrumental records.
Near-Inertial Response of a Salinity-Stratified Ocean
Authors: Chaudhuri Dipanjan , Sengupta Debasis , D’Asaro Eric , Farrar J. Thomas , Mathur Manikandan , Ranganathan Sundar 
Published: May 2024

Abstract
We study the near-inertial response of the salinity-stratified north Bay of Bengal to monsoonal wind forcing using 6 years of hourly observations from four moorings. The mean annual energy input from surface winds to near-inertial mixed layer currents is 10–20 kJ m−2, occurring mainly in distinct synoptic “events” from April–September. A total of fifteen events are analyzed: Seven when the ocean is capped by a thin layer of low-salinity river water (fresh) and eight when it is not (salty). The average near-inertial energy input from winds is 40% higher in the fresh cases than in the salty cases. During the fresh events, 1) mixed layer near-inertial motions decay about two times faster and 2) near-inertial kinetic energy below the mixed layer is reduced by at least a factor of three relative to the salty cases. The near-inertial horizontal wavelength was measured for one fresh and one salty event; the fresh was about three times shorter initially. A linear model of near-inertial wave propagation tuned to these data reproduces 2); the thin (10 m) mixed layers during the fresh events excite high modes, which propagate more slowly than the low modes excited by the thicker (40 m) mixed layers in the salty events. The model does not reproduce 1); the rapid decay of the mixed layer inertial motions in the fresh events is not explained by the linear wave propagation at the resolved scales; a different and currently unknown set of processes is likely responsible.
Enhancing Lymph Node Yield in Gastric Cancer Resection: Impact of Back Table Dissection on Number of Lymph Node Examined
Authors: Wong Harry J. , Rawal Rushil , Tseng Joshua , Phillips Edward , Gangi Alexandra , Burch Miguel 
Published: May 2024

Introduction During gastric cancer resection, back table dissection (BTD) involves examination and separation of lymph node (LN) packets from the surgical specimen based on LN stations, which are sent to pathology as separately labeled specimens. With potential impact on clinical outcomes, we aimed to explore how BTD affects number of LNs examined. Methods A retrospective review of a gastric cancer database was performed, including all cases of gastrectomy with D2 lymphadenectomy from January 2009 to March 2022. Back table dissection and conventional groups were compared using Mann-Whitney U and Fisher’s exact tests. Multiple linear regression modeling was used to identify potential predictors of number of LN examined. Results A total of 174 patients were identified: 39 (22%) BTD and 135 (78%) conventional. More patients in the BTD group underwent neoadjuvant chemotherapy (62% vs 29%, P < .05). Compared to the conventional group, the BTD group had a greater number of LNs examined (42 [26-59] vs 21[15-33], median [IQR], P < .001), lower LN positivity ratio (.01 vs .07, P = .013), and greater number of LNs in patients with BMI >35 (32.5[27.5-39] vs 22[13-27], P = .041). A multiple linear regression model controlling for age, BMI, preoperative N stage, neoadjuvant chemotherapy, surgeon experience, and operative approach identified BTD as a significant positive predictor of number of LN examined (β = 19.7, P = .001). Conclusion Back table dissection resulted in improved LN yield during gastric cancer resection. As a simple technical addition, BTD helps enhance pathology examination and improve surgeon awareness, which may ultimately translate to improve oncologic outcomes.
Impact of Goods and Service Tax on MSME Sector: A Study Using Artificial Neural Network and Multivariate Analysis of Variance
Authors: Bhalla Neba , Kaur Inderjit , Sharma Rakesh Kumar 
Published: May 2024

Micro, small and medium enterprises (MSME) is one the vital sector of the developing economy. Changes in fiscal policy directly impact this sector the most. The present article aims to examine the impact of the recent Indian indirect system tax overhaul, that is, Goods and Service Tax (GST), on the MSME sector. We have employed multivariate analysis of variance and multi-layer perceptron neural network on the extensive data set for 60 months from April 2015 to March 2020. The empirical findings state that a significant increase has been observed in the MSMEs’ export, revenue generation and gross domestic product in the post-GST era. The findings may aid the emerging economies that are planning to alter tax systems to boost the MSME sector at the international level. JEL Codes: H20, L00, B22, C01, C45
AI or Human? Finding and Responding to Artificial Intelligence in Student Work
Authors: Fisk Gary D. 
Published: May 2024

Introduction Recent innovations in generative artificial intelligence (AI) technologies have led to an educational environment in which human authorship cannot be assumed, thereby posing a significant challenge to upholding academic integrity. Statement of the problem Both humans and AI detection technologies have difficulty distinguishing between AI-generated vs. human-authored text. This weakness raises a significant possibility of false positive errors: human-authored writing incorrectly judged as AI-generated. Literature review AI detection methodology, whether machine or human-based, is based on writing style characteristics. Empirical evidence demonstrates that AI detection technologies are more sensitive to AI-generated text than human judges, yet a positive finding from these technologies cannot provide absolute certainty of AI plagiarism. Teaching implications Given the uncertainty of detecting AI, a forgiving, pro-growth response to AI academic integrity cases is recommended, such as revise and resubmit decisions. Conclusion Faculty should cautiously embrace the use of AI detection technologies with the understanding that false positive errors will occasionally occur. This use is ethical provided that the responses to problematic cases are approached with the goal of educational growth rather than punishment.
Stressful Life Events in Impulsive and Non-impulsive Suicide Attempters: A Cross-sectional Study
Authors: Supritha  , Mruthyunjaya N.  , Matkar Abhay , Shashidhara H. L.  , Sandeep M. R.  
Published: May 2024

Background: Suicide is a significant public health issue, yet it can be avoided with prompt, evidence-based, and frequently inexpensive interventions. There are distinctions between the profiles of impulsive suicide attempters (ISA) and non-impulsive suicide attempters (NISA), and a significant number of suicide attempts are impulsive. A thorough multisectoral suicide prevention strategy is necessary for an effective national response. Methods: This observational cross-sectional study was conducted at a tertiary healthcare center in Karnataka. Sixty inpatients above the age of 18 years with an alleged history of suicide attempts were enrolled in the study. Their stressful life events in the past year were assessed using the Presumptive Stressful Life Events Scale (PSLES). Impulsive and non-impulsive attempters were considered based on the time gap between the suicidal ideation and the suicidal attempt with the presence or absence of plans regarding the act. They were compared using appropriate inferential statistical tests. Results: The majority of the suicide attempts were impulsive (63.3%). The ISA and NISA did not differ in socio-demographic characteristics except for age and family type, with impulsive attempters being more common at younger ages than the non-impulsive attempters ( p = .02). The majority of ISA were from joint families (44.7%), while 72.7% of NISA were from nuclear households ( p = .04). Compared to ISA, NISA recollected a higher number of stressors. Conclusion: The ISA and NISA differ in aspects of age, family type, and stressors. Characteristic distinctions between ISA and NISA should be recognized and understood in order to design policies for suicide prevention and minimize morbidity and mortality. Exploring and addressing the stressors and helping patients to overcome them through better coping skills helps in suicide prevention.
The effectiveness of out-of-hours palliative care telephone advice lines: A rapid systematic review
Authors: Johansson Therese , Chambers Rachel L. , Curtis Thomas , Pask Sophie , Greenley Sarah , Brittain Molly , Bone Anna E. , Laidlaw Lynn , Okamoto Ikumi , Barclay Stephen , Higginson Irene J. , Murtagh Fliss E.M. , Sleeman Katherine E. 
Published: May 2024

Background: People with palliative care needs and their carers often rely on out-of-hours services to remain at home. Policymakers have recommended implementing telephone advice lines to ensure 24/7 access to support. However, the impact of these services on patient and carer outcomes, as well as the health care system, remains poorly understood. Aim: To evaluate the clinical- and cost-effectiveness of out-of-hours palliative care telephone advice lines, and to identify service characteristics associated with effectiveness. Design: Rapid systematic review (PROSPERO ID: CRD42023400370) with narrative synthesis. Data sources: Three databases (Medline, EMBASE and CINAHL) were searched in February 2023 for studies of any design reporting on telephone advice lines with at least partial out-of-hours availability. Study quality was assessed using the Mixed Methods Appraisal Tool, and quantitative and qualitative data were synthesised narratively. Results: Twenty-one studies, published 2000–2022, were included. Most studies were observational, none were experimental. While some evidence suggested that telephone advice lines offer guidance and reassurance, supporting care at home and potentially reducing avoidable emergency care use in the last months of life, variability in reporting and poor methodological quality across studies limit our understanding of patient/carer and health care system outcomes. Conclusion: Despite their increasing use, evidence for the clinical- and cost-effectiveness of palliative care telephone advice lines remains limited, primarily due to the lack of robust comparative studies. There is a need for more rigorous evaluations incorporating experimental or quasi-experimental methods and longer follow-up, and standardised reporting of telephone advice line models and outcomes, to guide policy and practice.
Widespread Vascularization and Correlation of Glycosaminoglycan Accumulation to Tendon Pain in Human Plantar Fascia Tendinopathy
Authors: Merkel Max F.R. , Svensson Rene B. , Jakobsen Jens R. , Mackey Abigail L. , Schjerling Peter , Herzog Robert B. , Magnusson S. Peter , Konradsen Lars , Krogsgaard Michael R. , Kjær Michael , Johannsen Finn E. 
Published: May 2024

Background: Plantar fasciitis is a painful tendinous condition (tendinopathy) with a high prevalence in athletes. While a healthy tendon has limited blood flow, ultrasound has indicated elevated blood flow in tendinopathy, but it is unknown if this is related to a de facto increase in the tendon vasculature. Likewise, an accumulation of glycosaminoglycans (GAGs) is observed in tendinopathy, but its relationship to clinical pain is unknown. Purpose: To explore to what extent vascularization, inflammation, and fat infiltration were present in patients with plantar fasciitis and if they were related to clinical symptoms. Study Design: Descriptive laboratory study. Methods: Biopsy specimens from tendinopathic plantar fascia tissue were obtained per-operatively from both the primary site of tendon pain and tissue swelling (“proximal”) and a region that appeared macroscopically healthy at 1 to 2 cm away from the primary site (“distal”) in 22 patients. Biopsy specimens were examined with immunofluorescence for markers of blood vessels, tissue cell density, fat infiltration, and macrophage level. In addition, pain during the first step in the morning (registered during an earlier study) was correlated with the content of collagen and GAGs in tissue. Results: High vascularization (and cellularity) was present in both the proximal (0.89%) and the distal (0.96%) plantar fascia samples, whereas inconsistent but not significantly different fat infiltration and macrophage levels were observed. The collagen content was similar in the 2 plantar fascia regions, whereas the GAG content was higher in the proximal region (3.2% in proximal and 2.8% in distal; P = .027). The GAG content in the proximal region was positively correlated with the subjective morning pain score in the patients with tendinopathy (n = 17). Conclusion: In patients with plantar fasciitis, marked tissue vascularization was present in both the painful focal region and a neighboring nonsymptomatic area. In contrast, the accumulation of hydrophilic GAGs was greater in the symptomatic region and was positively correlated with increased clinical pain levels in daily life. Clinical Relevance: The accumulation of GAGs in tissue rather than the extent of vascularization appears to be linked with the clinical degree of pain symptoms of the disease.
Underwater dissimilar friction stir lap welding of aluminum alloy and CFRTP
Authors: Zhang Yuan , Sun Yibo , Liu Yong , Guan Kainan , Wei Xiao , Yang Xinhua 
Published: May 2024

With the rapid development of the transportation and electronic equipment industries, the demand for robust joining technology for metal/polymer has become imperative, especially in the pursuit of lightweight solutions. Underwater welding is one of the methods to reduce the formation of holes and other welding defects, which is conducive to improve the quality and strength of joints. In this study, the underwater friction stir lap welding (UFSLW) of 6061-T6 Al alloy and carbon fiber reinforced thermoplastic (CFRTP) joints is investigated. The welds are evaluated by optical microscope (OM) image, scanning electron microscope (SEM), and energy dispersive X-ray spectrometer (EDS) of the fracture, tensile, and hardness analysis. Research reveals that the presence of cracks and tunnel defects similar to those in air FSLW (AFSLW) is reduced in the underwater welding process. From the microscopic result analysis, the rapid dissipation of frictional heat and substrate viscosity in the cooling medium of circulating water in the stirring zone reduces the interaction between Al alloy and molten CFRTP, which leads to the rapid transformation of the plasticized material into a solid state and reduces the formation of thick stacked layer. In addition, finer Al alloy fragments are obtained in the welding zone due to the fast cooling rate. Ultimately, the maximum tensile strength of 32.12 MPa is achieved, which is 10.76% higher than that of the same welding parameters in air. Based on UFSLW technology, the joint strength of this study is 69% higher than that of Al alloy and polymer joints, which demonstrates enormous application potential and opens up new prospects for the joining technology of dissimilar materials.
Investigation of curve minimum radius in heavy-haul railway to improve wheel wear evolution and wheel-rail contact geometry
Authors: Liu Pengfei , Hao Kai , Wang Chen , Wang Meiqi , Wang Ao , Xing Zida 
Published: May 2024

To determine the minimum and reasonable radius of horizontal curve for reducing wheel wear in heavy-haul railway design, a HXD locomotive with the wheel arrangement of C0-C0 is taken as the research object. Both the corresponding locomotive dynamic model and wheel wear model are established. Based on the measured wear data in a specific line, the simulation model is verified with the prediction error of wheel wear depth below 0.5 mm in general. The wheel wear evolution rules in 400∼1000m radius curves are studied and compared. The results indicate that, the wheel wear is large and sensitive to curve radius within 400∼600 m. The larger radius curve will be helpful to reduce wheel flange contact and wheel wear. For curve radius increasing from 600m to 1000m, the wheel average wear reduces slowly. Especially for curve radius below around 740 m, the wheel flange wear will be predominant. For radius above 740m, the wheel tread wear becomes the main wear form and the wheel flange wear can be reduced significantly. The increase of curve radius will also improve the wheel-rail equivalent conicity. If the minimum curve radius is set as 800m, the equivalent conicity difference between new wheelset and 1st ∼ 3rd worn wheelset can be kept below 21%, 52% and 9% respectively. In this case, the equivalent conicity is closest to the initial state and reaches a steady state, which will not change significantly with the radius further increasing. Viewed from the aspects of reducing wheel wear, avoiding wheel flange contact and keeping conicity stable simultaneously, the minimum radius of horizontal curve should be limited to 800 m. The research results validate the minimum curve radius suggested in Code for Design of Heavy-haul Railway in China, and provide a scientific explanation for the determination of this value.
Quality of Life in Caregivers of Alcohol Use Disorder Patients: Role of Family Functioning  and Social Support
Authors: Kalra Hunny , Tung Suninder 
Published: May 2024

Background: Caring for alcohol use disorder (AUD) patients poses significant challenges, impacting caregivers’ quality of life (QOL) across all the dimensions. Following Lazarus and Folkman’s Transactional Model of Stress and Coping, family functioning (FF) and social support (SS) are crucial coping resources.Purpose: This study aims to explore how FF and SS relate to QOL in caregivers of individuals with AUD, recognising their pivotal role in navigating diverse caregiving-related stressors.Methods: A sample of 128 primary caregivers for AUD patients was collected from two psychiatric hospitals in Amritsar, Punjab. Data were collected using assessment tools, such as the World Health Organization Quality of Life Brief Version (WHOQOL–BREF), Family Assessment Device and PGI Social Support Questionnaire, and were analysed through the Pearson product moment correlation and multiple regression analysis.Results: FF ( r = –0.603) and SS ( r = 0.641) exhibited significant correlations with caregivers’ QOL. Multiple regression analysis confirmed that both FF (β = –0.345) and SS (β = 0.436) significantly predicted QOL among caregivers. Approximately 49% of the variance in QOL was explained by the linear combination of SS and FF.Conclusion: Developing tailored programs is essential to enhance caregivers’ physical, mental, social and environmental well-being. Healthcare professionals should recognise the intricate connections among these dimensions, crafting holistic approaches to nurture a supportive caregiving environment.
Knowledge and attitudes towards eating disorders: A survey of psychiatrists and psychiatry trainees in New South Wales
Authors: Jing Elsie , Gregertsen Eva , Chen Leo , Russell Janice 
Published: May 2024

Objective To evaluate New South Wales (NSW) psychiatrists’ and psychiatry trainees’ knowledge and attitudes towards eating disorders (EDs). Method A total of 1781 psychiatrists and trainees in NSW were invited to complete an anonymous questionnaire assessing ED confidence, knowledge and attitudes. Results A total of 51 doctors responded to the survey, with 38 completing all items. Significant knowledge gaps were revealed. Respondents expressed a desire for more ED training. Conclusion Enhanced ED training in psychiatry education and incorporating the lived experience voice to improve attitudes appear necessary.