bluuebunny/crossref_metadata_2025_split huggingface dataset:
Similar Healthcare Utilization and 1-Year Patient-Reported Outcomes between Cemented and Cementless Primary Total Knee Arthroplasty: A Propensity Score-Matched Analysis
Authors: Erossy Michael P. , Emara Ahmed K. , Rothfusz Christopher A. , Klika Alison K. , Bloomfield Michael R. , Higuera Carlos A. , Jin Yuxuan , Krebs Viktor E. , Mesko Nathan W. , Molloy Robert M. , Murray Trevor G. , Patel Preetesh D. , Stearns Kim L. , Schaffer Jonathan L. , Strnad Gregory J. , Piuzzi Nicolas S. 
Published: November 2021

AbstractCementless fixation for total knee arthroplasty (TKA) has gained traction with the advent of newer fixation technologies. This study assessed (1) healthcare utilization (length of stay (LOS), nonhome discharge, 90-day readmission, and 1-year reoperation); (2) 1-year mortality; and (3) 1-year joint-specific and global health-related patient-reported outcome measures (PROMs) among patients who received cementless versus cemented TKA. Patients who underwent cementless and cemented TKA at a single institution (July 2015–August 2018) were prospectively enrolled. A total of 424 cementless and 5,274 cemented TKAs were included. The cementless cohort was propensity score-matched to a group cemented TKAs (1:3-cementless: n = 424; cemented: n = 1,272). Within the matched cohorts, 76.9% (n = 326) cementless and 75.9% (n = 966) cementless TKAs completed 1-year PROMs. Healthcare utilization measures, mortality and the median 1-year change in knee injury and osteoarthritis outcome score (KOOS)-pain, KOOS-physical function short form (PS), KOOS-knee related quality of life (KRQOL), Veteran Rand (VR)-12 mental composite (MCS), and physical composite (PCS) scores were compared. The minimal clinically important difference (MCID) for PROMs was calculated. Cementless TKA exhibited similar rates of median LOS (p = 0.109), nonhome discharge disposition (p = 0.056), all-cause 90-day readmission (p = 0.226), 1-year reoperation (p = 0.597), and 1-year mortality (p = 0.861) when compared with cemented TKA. There was no significant difference in the median 1-year improvement in KOOS-pain (p = 0.370), KOOS-PS (p = 0.417), KOOS-KRQOL (p = 0.101), VR-12-PCS (p = 0.269), and VR-12-MCS (p = 0.191) between the cementless and cemented TKA cohorts. Rates of attaining MCID were similar in both cohorts for assessed PROMs (p > 0.05, each) except KOOS-KRQOL (cementless: n = 313 (96.0%) vs. cemented: n = 895 [92.7%]; p = 0.036). Cementless TKA provides similar healthcare-utilization, mortality, and 1-year PROM improvement versus cemented TKA. Cementless fixation in TKA may provide value through higher MCID improvement in quality of life. Future episode-of-care cost-analyses and longer-term survivorship investigations are warranted.
Case Studies of Two Classical Imprinting Growth Disorders: Silver–Russell and Beckwith–Wiedemann Syndromes
Authors: Kaur Parminder , Chaudhry Chakshu , Kaur Anupriya , Panigrahi Inusha , Srivastava Priyanka 
Published: November 2021

AbstractThe genetic influences on human growth are being increasingly deciphered. Silver–Russell and Beckwith–Wiedemann syndromes (SRS; BWS) are two relatively common genetic syndromes with under- and overgrowth-related issues being the reason for referral. Aberration in genomic imprinting is the underlying genetic pathomechanism behind these syndromes. Herein, we described a series of children with these two growth disorders and give an orientation to the reader of the concept of imprinting as well as the genetic testing strategy and counseling to be offered in these syndromes.
Posttraumatic Retropharyngeal Pseudomeningocele—A Case Report
Authors: Tyngkan Lamkordor , Singh Vishal , Mathew Vivek , Laharwal Masood Ahmed 
Published: November 2021

AbstractA retropharyngeal pseudomeningocele after cervical vertebral fracture dislocation is an extremely rare complication and often associated with hydrocephalus. It usually presents with respiratory difficulty and dysphagia, sometimes as an incidental finding in radiological study. We reported a case of 45-year-old female patient who had posttraumatic lower cervical prevertebral retropharyngeal pseudomeningocele, found as an incidental finding in a routine radiological workup. Patient underwent ACDF but expired 2 weeks postoperatively due to respiratory failure. Although the prognosis of retropharyngeal pseudomeningocele depends upon the severity of initial trauma, early recognition and management can prevent enlargement of cyst and development of respiratory difficulty and dysphagia.
Potentially Preventable Primary Cesarean Sections in Future Placenta Accreta Spectrum
Authors: Matthews Kathy C. , Quinn Andrew S. , Chasen Stephen T. 
Published: November 2021

Objective Prior cesarean delivery is a well-known risk factor for placenta accreta spectrum disorders. While primary cesarean section is unavoidable in some patients, in others it may not be clearly indicated. The aim of the study is to determine the proportion of patients with placenta accreta spectrum who had a potentially preventable primary cesarean section and to identify factors associated with preventable placenta accreta spectrum.
Study Design This was a single-center retrospective cohort study of women with pathology-confirmed placenta accreta spectrum from 2007 to 2019. Primary cesarean sections were categorized as potentially preventable or unpreventable based on practice consistent with the American College of Obstetricians and Gynecologists and the Society for Maternal–Fetal Medicine “Safe Prevention of the Primary Cesarean Delivery” recommendations. Fisher's exact test and Mann-Whitney U-test were used for comparison with p <0.05 considered statistically significant.
Results Seventy-two patients had pathology-confirmed placenta accreta spectrum over the course of the study period, 15 (20.8%) of whom required a cesarean hysterectomy at the time of primary cesarean section. Fifty-seven patients had placenta accreta spectrum in a pregnancy following their primary cesarean section. Of these, 29 (50.9%) were considered potentially preventable. Most were performed without clear medical indication (37.9%) or for fetal malpresentation without attempted external cephalic version (37.9%). The remainder were due to arrest of labor not meeting criteria (17.2%) and abnormal or indeterminate fetal heart patterns with documented recovery (6.9%). Of the 11 patients without clear medical indication for primary cesarean section, eight (72.7%) were patient-choice cesarean sections and three (27.3%) were for suspected fetal macrosomia with estimated fetal weights not meeting criteria for cesarean delivery. There was no difference in the incidence of potentially preventable primary cesarean sections before and after the ACOG-SMFM “Safe Prevention of the Primary Cesarean Delivery” publication (48.8 vs. 57.1%, p = 0.59). Privately insured patients were more likely to have a potentially preventable primary cesarean section than those with Medicaid (62.5 vs. 23.5%, p = 0.008) and were more likely to have a primary cesarean section without clear medical indication (81.8 vs. 18.2%, p = 0.004).
Conclusion Many patients with placenta accreta spectrum had a potentially preventable primary cesarean section. Most were performed without clear medical indication or for malpresentation without attempted external cephalic version, suggesting that at least a subset of placenta accreta spectrum cases may be preventable. This was particularly true for privately insured patients. These findings call for continued investigation of potentially preventable primary cesarean sections with initiatives to address concerns at the patient, provider, and hospital level.
Key Points
A simple method for estimating the Lorenz curve
Authors: Sitthiyot Thitithep , Holasut Kanyarat 
Published: November 2021

AbstractGiven many popular functional forms for the Lorenz curve do not have a closed-form expression for the Gini index and no study has utilized the observed Gini index to estimate parameter(s) associated with the corresponding parametric functional form, a simple method for estimating the Lorenz curve is introduced. It utilizes three indicators, namely, the Gini index and the income shares of the bottom and the top in order to calculate the values of parameters associated with the specified functional form which has a closed-form expression for the Gini index. No error minimization technique is required in order to estimate the Lorenz curve. The data on the Gini index and the income shares of four countries that have a different level of income inequality, economic, sociological, and regional backgrounds from the United Nations University-World Income Inequality Database are used to illustrate how the simple method works. The overall results indicate that the estimated Lorenz curves fit the actual observations practically well. This simple method could be useful in the situation where the availability of data on income distribution is low. However, if more data on income distribution are available, this study shows that the specified functional form could be used to directly estimate the Lorenz curve. Moreover, the estimated values of the Gini index calculated based on the specified functional form are virtually identical to their actual observations.
Laser requirements for the design of fast laser-driven semiconductor switches for THz and mm-waves
Authors: Schaub S. C. , Cohick Z. W. , Hoff B. W. 
Published: November 2021

A reduced parameter model of fast laser-driven semiconductor switches of THz and mm-waves has been developed. The model predicts peak reflectivity and minimum transmissivity of switches, showing good agreement with experimental data, while requiring fewer inputs than published models. This simplification facilitated a systematic survey of laser parameters required for efficient switching. Laser energy density requirements are presented as a function of laser wavelength, laser pulse width, switched frequency, reflection angle, and semiconductor material (silicon or gallium arsenide). Analytical expressions have been derived to explain the dependence of laser requirements on switch parameters and to derive practical minima of required laser energy density. Diffusion is shown to quickly negate the shallow absorption advantage of laser wavelengths shorter than about 500 nm in silicon or 800 nm in gallium arsenide. Decreasing laser pulse width, to a derived limit, and switching S-polarized THz or mm-wave signals are shown to be means of lowering required laser energy. This is an especially useful result for devices operating at high power levels or THz frequencies, where extended switches are used in quasioptical systems.
Design and development of a rapid, high voltage capacitor charging power supply based on third order resonant converter topology
Authors: Thekkeppat Reghu , Singh Sonu K. , Lad Mahendra , Bhongade Sandeep , Shrivastava Purushottam 
Published: November 2021

A rapid, high voltage capacitor charging power supply (CCPS) based on a third order resonant converter topology has been proposed, analyzed, and simulated using the PSpice software, and as a proof of concept, a prototype of the 6.0 kV, 6.0 A CCPS is also developed. High charging power, low resonant current, and high pulse repetition rate were targeted in the design. In this paper, ac analysis for the calculation of impedance and resonant frequency, and frequency dependence on current gain, and the steady state analysis of the proposed scheme have been studied and presented. The performance is analyzed by simulating the circuit for two values of load capacitances. The simulation and prototype results show linear charging of the load for both values of load capacitances. The charging times of 1.47 and 0.97 ms have been achieved for load capacitances of 1.5 and 1.0 µF, respectively. The performance of the LLC topology has been compared with a conventionally used series resonant scheme. A high charging power of 18.4 kJ/s has been achieved. The topology shows a faster charging rate by ∼36% in comparison with the series LC resonant topology. The results of the analysis match with the simulation and prototype results, which confirms that the proposed scheme is suitable for rapid and reliable CCPS applications.
Internal rotation arena: Program performances on the low barrier problem of 4-methylacetophenone
Authors: Herbers Sven , Zingsheim Oliver , Nguyen Ha Vinh Lam , Bonah Luis , Heyne Bettina , Wehres Nadine , Schlemmer Stephan 
Published: November 2021

In the rotational spectroscopy community, several popular codes are available to treat multiple internal rotors in a molecule. In terms of the pros and cons of each code, it is often a difficult task to decide which program to apply to a specific internal rotation problem. We faced this issue when dealing with the spectroscopic fingerprint of 4-methylacetophenone (4MAP), recently investigated in the microwave region, which we here extended into the millimeterwave region. The methyl group attached to the phenyl ring in 4MAP undergoes internal rotation with a very low barrier of only 22 cm−1. The acetyl methyl group features a much higher barrier of about 580 cm−1. The performances of a program using the so-called “local” approach in terms of Herschbach’s perturbative treatment, SPFIT, as well as three programs XIAM, ERHAM, and ntop, representing “global” fits, were tested. The results aim at helping spectroscopists in the decision on how to tackle their own internal rotation problems.
Myrmecochory in
Authors: Plunkett George T. , Sadgrove Nicolas J. , Wright Boyd R. , Wilson Karen L. , Bruhl Jeremy J. 
Published: November 2021

The diaspores of Lepidosperma Labill. (Cyperaceae) have thickened perianth members persistent at the base of the fruit, which are generally assumed to form a unique type of elaiosome but this assumption has not been tested rigorously. We tested whether the perianth provides a lipid-rich food reward and improves diaspore removal by ants in three species of Lepidosperma. We measured (i) the lipid and fatty acid composition of the fruit and perianth of two species of Lepidosperma, and of the seed and aril of two species of Acacia (known myrmecochores), (ii) the relative attractiveness to ants of the perianth in three species of Lepidosperma, and (iii) the relative attractiveness to ants of the diaspores of the same species of Lepidosperma compared with the two species of Acacia. We found that (i) Lepidosperma diaspores show traits consistent with myrmecochory, particularly the high lipid content (∼12–60%) and fatty acid profile of perianth material, (ii) isolated perianth members were removed in greater numbers over all times than were diaspores only (i.e. with perianth removed) in two species of Lepidosperma (n = 100, P = 0.035 and 0.047), whereas the difference was equivocal in the third species (n = 100, P > 0.05), and (iii) Lepidosperma and Acacia diaspores were removed in similar numbers over time (n = 100, P > 0.5). Seven species of diaspore-removing ant were observed, with Rhytidoponera metallica accounting for ∼50% of observed removals. We conclude that the perianth members of Lepidosperma are an elaiosome that provides a lipid-rich food reward.
Posttranscriptional modulation of KCNQ2 gene expression by the miR-106b microRNA family
Authors: Kim Kwon-Woo , Kim Keetae , Kim Hee-Jin , Kim Byeol-I , Baek Myungin , Suh Byung-Chang 
Published: November 2021

Significance
Up-regulation of the M-type KCNQ2/KCNQ3 channels from late fetal life to early infancy is important for normal development and functional maturation of nervous systems in the brain. However, detailed mechanisms for the early regulation of KCNQ2/3 expression remain unclear. Here, we report that select miR-106b microRNA (miRNA) family members modulate the KCNQ2 subunit expression by binding to the 3′-untranslated region of KCNQ2 messenger RNA. Moreover, KCNQ2 expression and miR-106b family members are inversely regulated in early stages of the mouse hippocampus, revealing the mechanisms underlying the sustained increase of KCNQ channel activity during postnatal development. Our work will provide insight into why miR-106b miRNA is the key biomarker for epileptic syndromes.
Contact phenomena
Authors: López Luis 
Published: November 2021

Abstract
Against the common-sense notion that bilinguals have two grammatical systems I argue that the linguistic system of a bilingual should be integrated, following ideas developed in more detail in López (2020). In particular, I argue that both the lexicon and the post-syntactic operations that lead to the externalization systems are integrated. I further argue that the distinction between code-switching and borrowing is spurious and I extend the integrated hypothesis to syntactic transfer. I use Distributed Morphology to formally describe how an integrated system may work.
Temporal marking and (in)accessibility in Capeverdean
Authors: Pratas Fernanda 
Published: November 2021

Abstract
Recent descriptions have argued that what seem to be past tense markers in Capeverdean, a Portuguese-related language spoken in Cabo Verde, are instead allomorphs of a temporal agreement morpheme (Pratas 2018a). The rationale for this goes as follows. It is true that both -ba, from the variety of Santiago, and the related (and more complex) form tava, from São Vicente, are sometimes associated with a past tense in the terms of Klein (1994): the Topic Time is located before the Time of Utterance (Pratas 2014). This is the case in (i) past progressives and past habituals. But they also appear in (ii) subordinate clauses where no past interpretation is certain, such as some conditionals and other modal contexts. Since this subordinate lexical item is often licensed in the context of past situations denoted by their respective main clauses, it seems indeed better accounted for by this recent agreement proposal. That analysis, however, still leaves open the question of what this morpheme agrees with, and this is even more intriguing when it occurs fully separated from past situations. Alternatively, the approach taken in Pratas (2021) identifies a common point between (i) and (ii): all these structures denote situations with a low degree of accessibility from the speaker’s perspective. This (in)accessibility is perceived in terms of time: in the first case, we cannot go back to the past; in the second case, external factors may (have) provide(d) an (in)accessible time location. The main goal of this paper then is to further defend this novel insight on that apparent mismatch, which can bring clues to similar problems crosslinguistically.
Very …. extracted
Authors: Poletto Cecilia , Poletto Cecilia 
Published: November 2021

Abstract
In this paper we consider cases of extraction of the degree word molto “very, much” from its modifier position within an AdjP (Giusti 2010a; b; Poletto 2014) in Old Italian. Such cases are reminiscent of Left Branch Extractions (LBE; Ross 1967), but, differently from what happens with adverb extraction in Slavic (Talić 2017), the conditions under which molto-extraction is possible are very restricted: molto can be extracted only when the AdjP is (or modifies a nominal expression) in post-copular predicative position but not outside a fully-fledged DP. We propose that the reason why the structure is so restricted has to do with the presence/absence of a phase boundary, while the reason why this has been lost in modern Italian is the loss of the target position in the CP layer. This allows us to show that the loss of the Verb Second property (V2) in Italian has fine-grained consequences in unexpected domains like quantifier extraction.
Comprehension and production of non-canonical word orders in Mandarin-speaking child heritage speakers
Authors: Hao Jiuzhou , Chondrogianni Vasiliki 
Published: November 2021

Abstract
Across languages, structures with non-canonical word order have been shown to be problematic for both child and adult heritage speakers. To investigate the linguistic and child-level factors that modulate heritage speakers’ difficulties with non-canonical word orders, we examined the comprehension and production of three Mandarin non-canonical structures in 5- to 9-year-old Mandarin-English heritage children and compared them to age-matched Mandarin-speaking monolingual children and adults. Specifically, we examined how linguistic properties, such as linear word order, presence or absence of morphosyntactic cues, and surface structural overlap between languages, as well as child-level factors, such as chronological age and current home language use affect the acquisition of non-canonical structures in heritage children and their monolingual peers. Results showed that although heritage children could use morphosyntactic cues, they did not show monolingual-level sensitivity to passive-related morphology. Additionally, children produced more canonical SVO word order, which is shared between English and Mandarin, and preferred the reverse interpretations of non-canonical structures in comprehension. These responses were taken as evidence for cross-linguistic influence from the majority to the minority language. Finally, although non-canonical structures caused difficulties for child heritage speakers, their performance was modulated by structure and improved with age, over and above heritage language use.
A six degree-of-freedom fused silica seismometer: design and tests of a metal prototype
Authors: Ubhi Amit Singh , Smetana Jiri , Zhang Teng , Cooper Sam , Prokhorov Leonid , Bryant John , Hoyland David , Miao Haixing , Martynov Denis 
Published: November 2021

Abstract
Ground vibrations couple to the longitudinal and angular motion of the aLIGO test masses and limit the observatory sensitivity below 30 Hz. Novel inertial sensors have the potential to improve the aLIGO sensitivity in this band and simplify the lock acquisition of the detectors. In this paper, we experimentally study a compact 6D seismometer that consists of a mass suspended by a single wire. The position of the mass is interferometrically read out relative to the platform that supports the seismometer. We present the experimental results, discuss limitations of our metallic prototype, and show that a compact 6D seismometer made out of fused silica and suspended with a fused silica fibre has the potential to improve the aLIGO low frequency noise.
Extended study on the application of the sextic potential in the frame of X(3)-sextic
Authors: Oulne M , Tagdamte I 
Published: November 2021

Abstract
The main aim of the present paper is to extensively study the γ-rigid Bohr Hamiltonian with anharmonic sextic oscillator potential for the variable β and γ = 0. For the corresponding spectral problem, a finite number of eigenvalues are explicitly found, by algebraic means, the so-called quasi-exact solvability (QES). The evolution of the spectral and electromagnetic properties by considering higher exact solvability orders is investigated, especially the approximate degeneracy of the ground and first two β bands at the critical point of the shape phase transition from a harmonic to an anharmonic prolate β-soft, as well as the shape evolution within an isotopic chain. The numerical results are given for 39 nuclei, namely, 98–108Ru, 100–102Mo, 116–130Xe, 180–196Pt, 172Os, 146–150Nd, 132–134Ce, 152–154Gd, 154–156Dy, 150–152Sm, 190Hg and 222Ra. Across this study, it seems that the higher QES order improves our results by decreasing the root mean square, mostly for deformed nuclei. The nuclei 100,104Ru, 118,120,126,128Xe, 148Nd and 172Os fall exactly at the critical point.