bluuebunny/crossref_metadata_2025_split huggingface dataset:
Privatization and productivity in China
Authors: Chen Yuyu , Igami Mitsuru , Sawada Masayuki , Xiao Mo 
Published: November 2021

AbstractWe study how ownership affects productivity in the context of China's privatization of state‐owned enterprises (SOEs). Its true impact remains unclear and controversial, partly because the government selectively privatized or liquidated nonperforming SOEs. To address this selection problem, we augment the Gandhi–Navarro–Rivers nonparametric production function to incorporate endogenous ownership changes. Results suggest private firms are 53% more productive than SOEs on average, but the benefits of privatization take several years to fully materialize. This productivity gap is smaller among larger firms and in economically more liberal times and places; it is larger in consumer‐facing and high‐tech industries.
Dating violence in adolescents in residential care: Frequency and associated factors
Authors: Dosil María , Jaureguizar Joana , Bernaras Elena 
Published: November 2021

AbstractPrevalence of dating violence (DV) is increasing, so the detailed study of the related factors can help to intervene in it more specifically. This study had three goals: to analyse the frequency of DV; to explore the differences between the frequency of perpetration and victimization of DV and sexist attitudes, antisocial and criminal behaviours and personal adjustment and to identify predictor variables of the frequency of DV. The sample consisted of 271 adolescents in residential care (54.6% boys and 45.4% girls), aged between 12 and 17 years (M = 15.23,SD = 1.60). The results showed that 91.5% of the adolescents perpetrate violence and 88.6% are victimized in their dating relationships. Of them, 28% said they committed frequent violence and 27.3% suffered it frequently. Adolescents who frequently perpetrate or experience violence differ from those who do so occasionally in their personal adjustment, antisocial and criminal behaviours and sexist attitudes. The predictors of the violence perpetration were age, hostile paternalistic sexism and antisocial behaviours. The predictors of victimization were sex, age, hostile paternalistic sexism and self‐esteem. The results of this study could be useful for the prevention and intervention in DV in the area of residential care.
New technique for abdominal wall procurement. Initial experience
Authors: Justo Iago , Marcacuzco Alberto , Caso Óscar , Manrique Alejandro , García‐Sesma Álvaro , Calvo Jorge , García‐Conde María , Fernández Clara , del Pozo Pilar , Rodríguez Yolanda , Jiménez‐Romero Carlos 
Published: November 2021

AbstractDifficulty in obtaining adequate abdominal wall closure due to loss of the abdominal domain is a frequent complication of multivisceral, isolated intestinal transplantation and in some cases of liver transplantation. Various methods for primary closure have been proposed, including the use of synthetic and biological meshes, as well as full‐thickness abdominal wall and non‐vascularized rectus fascia grafts. We describe a novel technique for abdominal wall procurement in which the graft is perfused synchronously with the abdominal organs and can be transplanted as a full‐thickness wall or as a non‐vascularized rectus fascia graft. We performed six transplants of non‐vascularized rectus fascia in three intestinal transplants, one multivisceral transplant, and two liver transplants. The size of the covered abdominal wall defects ranged from 17 cm × 7 cm to 25 cm × 20 cm. Only one patient developed graft infection secondary to enterocutaneous fistula requiring surgical correction and removal of the fascia graft. This patient, as well as two other patients, died due to sepsis. Our procurement technique allows removal of the rectus fascia graft to cover the abdominal wall defect, providing a feasible solution for treatment of abdominal wall defects in recipients after abdominal organ transplantation.
Endoscopic ultrasound versus magnetic resonance cholangiopancreatography for the diagnosis of computed tomography‐negative common bile duct stone: Prospective randomized controlled trial
Authors: Suzuki Masato , Sekino Yusuke , Hosono Kunihiro , Yamamoto Kouji , Kawana Kenichi , Nagase Hajime , Kubota Kensuke , Nakajima Atsushi 
Published: November 2021

ObjectivesFor suspected common bile duct stone (CBDS) missed on computed tomography (CT), there is no clear evidence on whether endoscopic ultrasound (EUS) or magnetic resonance cholangiopancreatography (MRCP) is the better diagnostic tool. We aimed to compare the diagnostic accuracy of EUS and MRCP for cases of missed CBDS on CT.MethodsPatients suspected of having CBDS were enrolled and randomly allocated to the EUS or MRCP group. Upon the initial examination, those having CBDS or sludge formation underwent endoscopic retrograde cholangiopancreatography (ERCP), while those who were CBDS‐negative underwent a second examination with either MRCP or EUS, which was distinct from the initial diagnostic procedure. The primary outcome was diagnostic accuracy, and the secondary outcomes were diagnostic ability, detection rate and characteristics of CBDS in the second examination, and the frequency of adverse events.ResultsBetween April 2019 and January 2021, 50 patients were enrolled in the study. The accuracy was 92.3% for EUS and 68.4% for MRCP (P = 0.055). EUS showed 100% sensitivity, 88.2% specificity, 81.8% positive predictive value, and 100% negative predictive value, and MRCP showed 33.3% sensitivity, 84.6% specificity, 50% positive predictive value, and 73.3% negative predictive value. The CBDS detection rate in the second examination was 0% for MRCP after a negative EUS and 35.7% for EUS after a negative MRCP (P = 0.041). No adverse events occurred in any of the patients.ConclusionsEndoscopic ultrasound may be a superior diagnostic tool compared to MRCP for the detection of CBDS that are undetected on CT. (UMIN000036357).
The importance of 1.5°C warming for the Great Barrier Reef
Authors: McWhorter Jennifer K. , Halloran Paul R. , Roff George , Skirving William J. , Perry Chris T. , Mumby Peter J. 
Published: November 2021

AbstractTropical coral reefs are among the most sensitive ecosystems to climate change and will benefit from the more ambitious aims of the United Nations Framework Convention on Climate Change's Paris Agreement, which proposed to limit global warming to 1.5° rather than 2°C above pre‐industrial levels. Only in the latest Intergovernmental Panel on Climate Change focussed assessment, the Coupled Model Intercomparison Project phase 6 (CMIP6), have climate models been used to investigate the 1.5° warming scenario directly. Here, we combine the most recent model updates from CMIP6 with a semi‐dynamic downscaling to evaluate the difference between the 1.5 and 2°C global warming targets on coral thermal stress metrics for the Great Barrier Reef (GBR). By ~2080, severe bleaching events are expected to occur annually under intensifying emissions (shared socioeconomic pathway SSP5‐8.5). Adherence to 2° warming (SSP1‐2.6) halves this frequency but the main benefit of confining warming to 1.5° (SSP1‐1.9) is that bleaching events are reduced further to 3 events per decade. Attaining low emissions of 1.5° is also paramount to prevent the mean magnitude of thermal stress from stabilizing close to a critical thermal threshold (8 Degree Heating Weeks). Thermal stress under the more pessimistic pathways SSP3‐7.0 and SSP5‐8.5 is three to fourfold higher than the present day, with grave implications for future reef ecosystem health. As global warming continues, our projections also indicate more regional warming in the central and southern GBR than the far north and northern GBR.
Merging the public and private spheres of women's work: Narratives from women street food vendors during Covid‐19 crisis
Authors: Guha Puja , Neti Annapurna , Lobo Roshni 
Published: November 2021

AbstractFeminist economists have long questioned the dichotomy between the “private” versus “public” spheres of women's work and have argued for a more nuanced understanding of the marketable paid work and the unpaid work of household caregiving. This paper focuses on women street food vendors' (SFVs) experiences before and during Covid‐19 pandemic to understand how street food vending as a livelihood activity interacts with social dimensions like gender and division of labor. Through multiple in‐depth interviews with 23 women street vendors in Bengaluru, India, before and during the pandemic, we show that there is a blurring of the dichotomy between the work done in the private and public spaces before the pandemic, which is disrupted by Covid‐19 crisis. The first half of the paper explores the household labor dynamics in the context of paid and unpaid work of women and explains how the women SFVs, capitalizing on their existing skills of “cooking,” were able to gain agency and recognition for themselves within the households. The second half of the paper focuses on the narratives of the same women SFVs during the first wave of the Covid pandemic and the subsequent lockdown. We find that the Covid crisis brought back the dichotomy between private and public spheres, making it more pronounced, with women losing their control over the public sphere and their work being restricted only to the private sphere.
Welfare chauvinism among co‐ethnics: Evidence from a conjoint experiment in South Korea
Authors: Ward Peter , Denney Steven 
Published: November 2021

AbstractThis paper asks whether welfare chauvinism applies to co‐ethnic migrants. Existing research on welfare chauvinism, the view that welfare provision should be restricted to native‐born citizens and that migrants should be excluded from provision, has largely focused on ethnic difference as a main motivation, but little attention is given to whether native‐born citizens discriminate among co‐ethnics. Using a choice‐based conjoint experiment and various framing interventions, this paper considers whether South Koreans discriminate against co‐ethnic migrants in providing social housing. It also considers whether public cost and recipient contribution requirements affect discrimination. We find that co‐ethnics are subject to welfare chauvinism, with applicants from more developed and culturally similar origins more preferred, but we do not find that the cost structure motivates discrimination based on origins. Accordingly, this paper expands the literature on migration and welfare states to better consider non‐Western societies with high levels of co‐ethnic migration.
A Review of Seasonal Adjustment Diagnostics
Authors: McElroy Tucker , Roy Anindya 
Published: November 2021

SummarySeasonal adjustment methods are used to process and publish thousands of time series across the world each month, and judgement of the adequacy relies heavily upon seasonal adjustment diagnostics. This paper discusses tests for the adequacy of a seasonal adjustment, first reviewing the broader background on tests for seasonality and then proceeding to four tests that are appropriate for stationary forms of seasonality. We contrast time‐domain and frequency‐domain approaches, focusing upon four diagnostics available in the seasonal adjustment literature (and software packages) and applying the methods to a large collection of public use time series. Each of the four tests is designed around a distinct formulation of seasonality, and hence, empirical performances differ; we compare and contrast the methods and include discussion on how diagnostic results can be used to improve faulty seasonal adjustments. Directions for future research, involving inverse partial autocorrelations and polyspectra, are also discussed, and the methodologies are supported by theoretical and simulation results.
Accelerated oxidation during 1350°C cycling of ytterbium silicate environmental barrier coatings
Authors: Kane Kenneth , Garcia Eugenio , Lance Michael , Parker Cory , Sampath Sanjay , Pint Bruce 
Published: November 2021

AbstractEnvironmental barrier coatings (EBCs) will be needed to protect SiC‐based ceramic matrix composite components for the next generation of high‐efficiency industrial gas turbines (IGTs). The IGT application will require ≥25 kh lifetimes, and little data are available on EBC failure mechanisms, particularly at ≥1300°C. Initial 1‐h furnace cycle testing at 1350°C in 90 vol% H2O/10 vol% air was conducted ≥1000 cycles on thermally sprayed ytterbium disilicate (YbDS) coatings with and without an Si bond coating. By ≥1000 h, both EBCs formed thick, highly cracked, and fully crystalline cristobalite scales. Comparison of thermally grown oxide (TGO) microstructure and kinetics to isothermal rates of Si and SiC steam oxidation indicated a departure from slow‐growing parabolic growth to more rapid rates of silica formation. Possible mechanisms and implications for this acceleration are discussed.
Design of a defect‐induced orange persistent luminescence phosphor BaZnGeO4:Bi3+
Authors: Sun Wenzhi , Jiao Mengmeng , Fan Liyan , Zhang Ruijuan , Zhang Xinxin , Zhang Hongwu 
Published: November 2021

AbstractWe report a novel bright orange persistent luminescence (PersL) phosphor BaZnGeO4:Bi3+ with broad emission and PersL spectra. Its crystal structure, photoluminescence (PL) spectra, thermoluminescence (TL) spectra and PersL spectra were investigated in detail. The two emission bands at 440 nm and 595 nm originate from Bi3+ ions in normal Ba2+ sites (Bi1) and Ba2+ sites close to vacancy defects (Bi2), respectively. The introduction of and defects improves the emission intensity of Bi2 more than that of Bi1, demonstrating that Bi2 is related to the vacancy defects. The orange emission and PersL properties of BZGO:Bi3+ can be improved when a little and defects are introduced, because the introduction of and defects makes it easier for Bi3+ to enter in Ba2+ sites; and for PersL, and defects can perform as the effective trap centers to capture more charges, which is beneficial for PersL. BZGO:Bi3+ has quite good thermal stability, and the bright orange PersL can be observed by the naked eye for 1 h. Finally, a feasible PersL mechanism of BZGO:Bi3+ was proposed to clarify the PersL‐generation process.
Micro‐/nanostructure evolution of C/SiFeO(N,C) polymer‐derived ceramic papers pyrolyzed in a reactive ammonia atmosphere
Authors: Peter Johannes , Ott Alexander , Riedel Ralf , Ionescu Emanuel , Kleebe Hans‐Joachim 
Published: November 2021

AbstractSiFeO(N,C)‐based ceramic papers were prepared via a one‐pot synthesis approach by dip‐coating a cellulose‐based paper template with a polymeric perhydropolysilazane precursor modified with iron(III)acetylacetonate. The preceramic composites were subsequently pyrolyzed in ammonia atmosphere at 500, 700, and 1000°C, respectively, and the characteristics of the three resulting ceramic papers were comparatively investigated.Scanning electron microscopy revealed that in each sample, the morphology of the template is successfully transferred on the ceramic system, with the cellulose‐derived fibers being converted to elemental carbon encased by a SiFeO(N,C) coating. Electron transparent cross‐sectional samples for transmission electron microscopy (TEM) were prepared from the ceramic papers, employing a standard ultramicrotomy slice cutting procedure, allowing for a detailed characterization of their in situ generated micro‐/nanostructure as well as occurring crystalline phases.TEM imaging and diffraction revealed that depending on pyrolysis temperature a different microstructure with a distinct phase assemblage is generated in the polymer‐derived ceramic papers. Crystallization from the polymer precursor starts with the precipitation of wüstite (Fe(1‐x)O) nanoparticles at 700°C inside the ceramic coating and secondaryε‐FexN at the fiber‐coating interface. Upon pyrolysis at 1000°C however, the sample primarily accommodates metallic α‐iron nanocrystals that impart ferromagnetic characteristics to the ceramic paper.The results show that the template‐assisted polymer‐derived ceramic route is a feasible approach in the production of complex ceramic compounds with fibrous paper‐like morphology. By adjusting the pyrolysis temperature, microstructure and phase composition of the ceramic paper can be conveniently tailored to the needs of its respective application.
Measuring the foveal avascular zone in diabetes: A study using optical coherence tomography angiography
Authors: Aitchison Ross T , Kennedy Graeme J , Shu Xinhua , Mansfield David C , Kir Rachel , Hui Jasmine , Shahani Uma 
Published: November 2021

AbstractAims/IntroductionDiabetes is a global issue that currently affects 425 million people worldwide. One observable microvascular complication of this condition is a change in the foveal avascular zone (FAZ). In this study, we used optical coherence tomography angiography to investigate the effect of diabetes on the FAZ.Materials and MethodsA total of 11 participants with diabetes and 11 participants without diabetes took part in this study. Participants in both groups were matched for age (P = 0.217) and sex (P = 0.338), and had no history of ocular disease. Macular optical coherence tomography angiography (OCT‐A) scans of participants’ right and left eyes were taken. Glycosylated hemoglobin (HbA1c) and blood glucose levels were also measured. The FAZ area was manually segmented at the levels of the superficial capillary plexus (FAZSCP) and deep capillary plexus (FAZDCP).ResultsThere was a strong relationship between the FAZ area of participants’ right and left eyes (P ≤ 0.001) in both diabetes and non‐diabetes groups. In the diabetes group, the FAZSCP (P = 0.047) and FAZDCP (P = 0.011) areas was significantly larger than in the non‐diabetes group. Moreover, multiple linear regression analysis predicted a 0.07‐mm2 increase in the FAZSCP and FAZDCP areas of individuals with diabetes for every 1% increase in their HbA1c level.ConclusionsOur findings show that there is enlargement of the FAZ in individuals with diabetes compared with individuals without diabetes. In the diabetes group, this enlargement appears to be correlated with HbA1c level. OCT‐A imaging could, therefore, be a useful tool to monitor the FAZ and identify potential early microvasculopathy in diabetes.
Transcranial Doppler findings in reversible cerebral vasoconstriction syndrome
Authors: Hathidara Mausaminben , Patel Nidhi H. , Flores Alan , Cabrera Yosdely , Cabrera Frank , Koch Sebastian 
Published: November 2021

AbstractBackground and PurposeReversible cerebral vasoconstriction syndrome (RCVS) is a syndrome characterized by reversible segmental vasoconstriction of cerebral arteries. Digital subtraction and noninvasive angiograms are typically used to detect vasospasm; however, due to the dynamic nature of RCVS these tests are often negative initially and may need to be repeated multiple times. Transcranial Doppler (TCD) offers many advantages as it is a noninvasive and nonradiating modality. Studies investigating its diagnostic utility for capturing vasospasm and studying temporal evolution of RCVS are limited.MethodsWe conducted a retrospective analysis on all patients admitted with suspected RCVS from 2009 to 2014 to a single center at Jackson Memorial Hospital.ResultsWe identified 9 patients (88.9% women, age 46.6 ± 13.5 years) who met diagnostic criteria for RCVS. All patients presented with headache, 5 developed nonaneurysmal subarachnoid hemorrhage, 5 developed ischemic stroke, and 1 developed posterior reversible encephalopathy syndrome. At initial TCD, 8 patients had increased flow velocities in at least one large intracranial artery and ultimately all patients had abnormal middle cerebral artery flow velocity over the course of RCVS. We found that the number of vessels with abnormal velocities increases gradually and peaks between 13 and 14 days after first symptom onset. Finally, mean flow velocity of affected vessels also increases around the same time frame and normalizes at 60 days.ConclusionsIn this case series, we found TCD to be useful in detecting vasospasm and monitoring the temporal evolution of RCVS. TCD could be a helpful clinical tool to diagnose and monitor RCVS.
Regional and sectorial impacts of the Covid‐19 crisis: Evidence from electronic payments
Authors: Carvalho Bruno P. , Peralta Susana , Pereira dos Santos João 
Published: November 2021

AbstractWe use novel and comprehensive monthly data on electronic payments, by municipality and sector, together with cash withdrawals, to study the impact of Covid‐19 in Portugal. Our difference‐in‐differences event study identifies a causal decrease of 17 and 40 percentage points on the year‐on‐year growth rate of overall purchases in March and April 2020. We document a stronger impact of the crisis in more central and more urban municipalities, due to a combination of the sectorial composition effect of the local economy and the sharper confinement behavioral effect in these locations. We discuss the importance of tourism for the results.
Altered human alveolar bone gene expression in type 2 diabetes—A cross‐sectional study
Authors: Ayilavarapu Srinivas , Doctor Abbas , Lee Chun‐Teh , Tribble Gena D. , Chiu Yulun , Weltman Robin L. , Angelov Nikola 
Published: November 2021

AbstractObjectiveThe objective of this cross‐sectional study is to investigate alveolar bone gene expression in health and diabetes through ribonucleic acid (RNA) sequencing and bioinformatics analysis.BackgroundIt is relatively unknown how type 2 diabetes modulates gene expression in alveolar bone in humans. Clinical concern regarding increased implant failure rate in patients with diabetes has been discussed in the literature. Previous studies in animal models and humans have suggested an imbalance between the genes regulating bone formation with data suggesting bone resorption in diabetes. However, there is lack of data regarding a comprehensive gene expression from human alveolar bone in diabetes.MethodsAlveolar bone was collected from healthy and type 2 diabetic subjects undergoing periodontal and implant surgeries. The homogenized RNA sample was then extracted and analyzed for quantity and quality. RNA samples were further purified using ribosomal RNA depletion technique and processed for RNA sequencing and analysis. Expression levels for mRNAs were performed by calculating FPKM ([total_exon_fragments/mapped reads (millions) × exon length (kB)]), and differentially expressed mRNAs were selected with log2 (fold change) >1 or log2 (fold change) ≤1 and with a parametric F test comparing nested linear models.ResultsEighteen bone samples (10 healthy, 8 patients with diabetes) were analyzed for gene expression. The mean age and HbA1c% of healthy versus diabetic subjects were as follows: age (55.3 ± 17.5 vs 63.9 ± 8.7 years) and HbA1c% (5.6 ± 0.29 vs 7.3 ± 2.4), respectively. Sequencing analysis showed that expression of genes that regulate bone turnover like TGFB1, LTBP4, IGF1, BMP2, BMP4, BMP6, SMAD1, RUNX2, MCSF, and THRA was significantly downregulated in diabetes samples compared with healthy controls with overall reduced expression of genes in the bone regulation pathway in patients with diabetes. Bioinformatics analysis for the altered genes highlighted several pathways related to bone homeostasis and inflammation in diabetes. Periodontitis did not affect the gene expression pattern based on diabetes status.ConclusionsAltered expression of genes due to downregulation of certain pathways that are involved in bone turnover and inflammation suggests that overall wound healing and bone homeostasis may be compromised in type 2 diabetes.