bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamic propagation behaviors of pure mode I crack under stress wave loading by caustics
Authors: Liu Huizhen , Yang Liyun , Yang Enguang , Yang Renshu 
Published: February 2022

Abstract
It is always a difficult task to study the dynamic fracture of prefabricated cracks under stress wave loading. To investigate loadings of stress waves on dynamic cracks, a crack propagation testing configuration consisting of a one-point bend specimen loaded in split Hopkinson pressure bar (SHPB) was used, which loaded an unconstrained polymethyl methacrylate (PMMA) plate (120 mm × 60 mm × 5 mm) on the edge opposite to the cracked edge. A modified simple pre-cracked specimen geometry under impact stress wave loading to generate pure mode I crack at crack initiation was demonstrated, which can avoid the superposition and interference of various waves to facilitate the research. The numerical simulation was performed firstly by ABAQUS to prove the existence of the mode I field at the crack tip leading to crack propagation and indicate the stress distribution and evolution in the specimen caused by the propagation of the impact stress wave, analyze the propagation characteristics of the wave. Then dynamic caustics method in conjunction with high-speed photography was utilized in SHPB impact experiment. The propagation of shock stress wave in the specimen and its interaction with the prefabricated crack and the stress concentration at the tip of the prefabricated crack were analyzed. The corresponding stress intensity factor history is precisely determined. Finally, it is concluded that the observed distortion phenomenon at the impact point belongs to a caustic behavior under compression load, which reflects the stress concentration at the impact point. And the mode I failure occurs along the pre-crack direction. Specifically, the pre-crack shows obvious pure mode I crack propagation characteristics under symmetrical reflected tensile wave, the stress at the crack tip changes from compressive stress to tensile stress. And crack propagates under tensile stress wave reflected from its two free boundaries without crack, while the compressive stress wave can not make crack initiate and has little influence on crack propagation. Which agree with the numerical prediction.
On the consideration of combined measurement uncertainties in relation to GUM concepts in adjustment computations
Authors: Neitzel Frank , Lösler Michael , Lehmann Rüdiger 
Published: February 2022

Abstract
In this contribution it is shown how an extended uncertainty budget of the observations according to the Guide to the Expression of Uncertainty in Measurement (GUM) can be considered in adjustment computations. The extended uncertainty budget results from the combination of Type A standard uncertainties determined with statistical methods and Type B standard uncertainties derived with nonstatistical methods. Two solutions are investigated, namely the adjustment in the classical Gauss-Markov model and the adjustment in the Gauss-Markov model using Monte Carlo simulations for the consideration of the uncertainties of the observations. Numerical examples are given to show that an appropriate interpretation of the dispersion measures for the unknowns is particularly important in order to avoid misinterpretation of the results. Furthermore, the effects of changing the weights of the observations on the adjustment results are shown. Finally, practical advice for the consideration of an extended uncertainty budget of the observations in adjustment computations is given.
Clinical evaluation and management of calcific tendinopathy: an evidence-based review
Authors: Catapano Michael , Robinson David M. , Schowalter Sean , McInnis Kelly C. 
Published: February 2022

Abstract
Calcific tendinopathy (CT) is an important musculoskeletal condition most commonly seen in the shoulder girdle, accounting for 10–42% of all shoulder pain. Despite the high prevalence within the shoulder region, CT has been demonstrated in many tendons throughout the axial and appendicular skeleton. Unlike degenerative tendinopathies, CT appears to be a self-limiting condition that affects otherwise-healthy tendon with deposition of calcium hydroxyapatite crystals between healthy tenocytes. In patients with functionally limiting symptoms or pain, the clinical course may be accelerated through a multitude of treatments including physical therapy and pain management, extracorporeal shock wave therapy, ultrasound-guided percutaneous lavage (UGPL), and operative debridement. Currently, the most efficacious and frequently utilized treatment for shoulder CT is UGPL due to its ability to effectively reduce calcium burden and pain while limiting soft-tissue damage. However, more evidence regarding the treatment and course of CT is needed before determining the most appropriate treatment at all potential sites of CT.
Homozygous missense variant of PTH (c.166C>T, p.(Arg56Cys)) as the cause of familial isolated hypoparathyroidism in a three-year-old child
Authors: Andersen Stine Linding , Frederiksen Anja Lisbeth , Rasmussen Astrid Bruun , Madsen Mette , Christensen Ann-Margrethe Rønholt 
Published: February 2022

Abstract

Objectives
Hypoparathyroidism is a rare disorder which is predominantly of idiopathic or genetic origin in children. The diagnosis is made from the biochemical measurement of parathyroid hormone (PTH), and the key findings include a low PTH in combination with hypocalcemia and hyperphosphatemia. However, the level of PTH encountered in patients with hypoparathyroidism may be dependent on the underlying genetic cause of the disorder as well as the biochemical assay used for assessment of PTH.

Case presentation
A three-year-old child with asymptomatic primary hypoparathyroidism was identified with a homozygous missense variant of PTH. A sudden unexpected high PTH result after a shift from 2nd to 3rd generation PTH assay in the routine laboratory provided a clue on the underlying genetic etiology.

Conclusions
Pathogenic variants of PTH as a cause of hypoparathyroidism are rarely described. In this case, the child was asymptomatic, and discordant PTH results were seen with different assays.
Photonic topological Lifshitz interfaces
Authors: Piao Xianji , Shin Jonghwa , Park Namkyoo 
Published: February 2022

Abstract
The intrinsic geometry of wavevector diagrams describes electronic or photonic transport at a given energy level. Lifshitz transition is an intriguing example of the topological transition in wavevector diagrams, which plays a critical role in abnormal transport with enhanced magnetoresistance or superconductivity. Here, we develop the spatial analogy of the Lifshitz transition, which provides a comprehensive topological perspective on transverse-spin interface states. We establish the excitation conditions of transverse-spin interface states, which require the “Lifshitz interface” – the interface between different topologies of wavevector diagrams – along with the gap in wavevector diagrams. Based on the detailed analysis of this topological phenomenon with respect to the dimensionality and gaps of wavevector diagrams across the Lifshitz interface, we show distinct parity of transverse spins and power flows in transverse-spin modes. The unique symmetry of interface states realizing Abraham-spin-momentum locking represents the gauge induced by the Lifshitz interface, which provides a novel insight into the Abraham–Minkowski controversy.
The twinned crystal structure of [4,4′-bipyridine]-1,1′-diium hexachloridostannate(IV), C10H10N2SnCl6
Authors: Reiss Guido J. , van Megen Martin 
Published: February 2022

Abstract
C10H10N2SnCl6, monoclinic, I2/a (no. 15), a = 7.4941(3) Å, b = 12.8731(4) Å, c = 15.8688(5) Å, β = 93.042(3)°, Z = 4, V = 1528.73(9) Å3, R

gt
(F) = 0.0264, wR
ref = 0.0485, T = 100 K.
On the Emerging Supremacy of Structured Digital Data in Archaeology: A Preliminary Assessment of Information, Knowledge and Wisdom Left Behind
Authors: Hacıgüzeller Piraye , Taylor James Stuart , Perry Sara 
Published: February 2022

AbstractWhile the epistemological affordances and varied impacts of different media on archaeological knowledge production have been scrutinized by many practitioners in recent decades, sources of digital structured data (e.g., spreadsheets, traditional relational databases, content management systems) have seen far less critical enquiry. Structured digital data are often venerated for their capacities to facilitate interoperability, equitable data exchange, democratic forms of engagement with, and widespread reuse of archaeological records, yet their constraints on our knowledge formation processes are arguably profound and deserving of detailed interrogation. In this article, we discuss what we call the emerging supremacy of structured digital data in archaeology and seek to question the consequences of their ubiquity. We ground our argument in a case study of a range of texts produced by practitioners working on the Çatalhöyük Research Project. We attempt to map short excerpts from these texts to structured data via the CIDOC Conceptual Reference Model. This exercise allows making preliminary observations about the representational affordances and resistances of texts (which can be considered as a type of semi- or unstructured data) and structured data. Ultimately, we argue that the push to create more and more structured and structurable data needs to be tempered by a more inclusive digital practice in archaeology that protects difference, incommensurability, and interpretative nuance.
A Lotmanian semiotic interpretation of cultural memory in ritual
Authors: Kang Cheng , Yu Hongbing 
Published: February 2022

AbstractThis paper affords a Lotmanian cultural semiotic analysis of the inner workings of ritual embodying the mechanism of cultural memory. In this intersectional study, we propose treating ritual as anintegralsemiotic system in which the community follows a prescribed collective process to create religious or social meanings and to regulate the mechanism of cultural memory throughconcretesymbols in the forms of behavior, speech, gestures, objects, spatial structures, and so on. Three semiotic properties of ritual in relation to cultural memory are identified, namely, continuity, concreteness, and integrity, which are jointly responsible for the efficacy of ritual in cultural memory making, or to be specific, in the preservation, retrieval, and even reproduction of cultural memory. With these properties, ritual helps construct and maintain socio-cultural order and group identity in the community, by repeating itself and thus creating a sense of continuity through the preservation and retrieval of cultural memory. The key components in ritual are its diverse and polysemous symbols, which are seldom confined to a specific context, although they are indeed subject to the dominant symbol and the dominant meaning in a ritual when necessary. With an extraordinary degree of autonomy and not bound to any fixed context, ritual symbols can enter a ritual situation as its components but retain the freedom of leaving the ritual context at any time, like an unchained “spectator,” and permeating multiple contexts as self-contained units. It is precisely through these transferrable ritual symbols that the fragments of cultural memory are randomly dispersed in the semiosphere and carried to unexpected socio-cultural contexts, bridging the past, the present, and the future and creating new cultural memory.
Virtual education programming for patients with acromegaly: a pilot study
Authors: Geer Eliza B , Kilgallon John L , Liebert Karen J P , Kimball Allison , Nachtigall Lisa B 
Published: February 2022

Objectives
To assess the impact of virtual education programming for patients with acromegaly.

Design
We conducted a mixed methods study to evaluate patient attitudes, examine if patient-centered educational forums change these attitudes, and determine the role of virtual education as a means to learn about patients’ unmet needs, self-reported outcomes, and educational priorities.

Methods
The study included 653 total virtual program registrants. Of these, 78 patients with acromegaly were included in the analysis. The programs consisted of patient-centered livestream education by a multidisciplinary team of pituitary experts and patient presenters. Multiple-choice questions were used to assess attitudes before and after the event, and short answer surveys were used to collect care goals and unmet needs related to treatment.

Results
Attendance included participants from 37 countries. The number of patients who responded that they had no hope for improvement, had no choice in their treatment, and felt alone living with acromegaly each decreased significantly pre- to post-event (P  < 0.05). The number of patients who felt anxious about their acromegaly diagnosis remained unchanged. ‘Quality of life/mental health’ was the most common personal care goals concern followed by ‘medical therapies/tumor control.’ Perceived acromegaly unmet needs were evenly distributed, with five of six categories reported by over 20% of patients.

Conclusion
Our findings indicate that virtual education may have a significant positive effect on acromegaly patients’ perceptions of their disease. The lessons learned from these virtual programs may be used to inform future virtual education programming for acromegaly and other rare diseases.
СТАТИЧЕСКИЙ РАСЧЕТ ШАРНИРНО-СОЕДИНЕННЫХ БАЛОК НА УПРУГОМ СЛОЕ
Authors: Козунова О. В. , Босаков С. В. 
Published: February 2022

Статический расчет шарнирно-соединенных балок на упругом однородном изотропном слое, как и на других моделях упругого основания, выполнен смешанным методом строительной механики и способом Жемочкина в случаях сосредоточенной и равномерно-распределенной нагрузок, действующих на балку с учетом ее собственного веса. Предложен универсальный подход для расчета шарнирно-соединенных балок на упругом слое, шарнирно соединенном с недеформируемым основанием, который позволяет с единых позиций рассчитывать шарнирно-соединенные балки любой жесткости при произвольной вертикальной нагрузке. Численная реализация предлагаемого подхода выполнена при помощи компьютерной программы в пакете Mathematica.
Understanding Centrality Theories •
Authors: Losonczy Anna Kornélia , Orbán Annamária 
Published: February 2022

The study is based on the re-combination or synthesis of international scientific literature, and the definition of the notions center, and sub-center. A conceptual-structural framework of socio-spatial characteristics of centers (and sub-centers) is set up, these factors are essential elements of making, maintaining, and rehabilitating a city: Market and Competition; Node and Pole; Faith; Power; Security; Mixture; and Identity. In an evaluation matrix, the meta-physical characteristics (that are the determining factors of the physical attributes) of these archetypes are drawn. Based on famous theorists, three types of city forms are distinguished: the “traditional / organic”, the “modern / planned”, and the “contemporary / disjointed” ones. We argue that the historical, theoretical-conceptual background of the triple division is comprehensible. However, this trichotomy lacks some essential elements, “measurable” aspects of city centers – outlined in our study –, which are important in contemporary urban processes and support more realistic urban planning.Tanulmányunkban – nemzetközi szakirodalmi kutatás alapján – definiáljuk a központ és az alközpont fogalmakat. Meghatározzuk a központok (és az alközpontok) téri-társadalmi jellemzőinek konceptuális és strukturális keretrendszerét. Ezek az alkotóelemek – Piac és Verseny; Csomópont és Pólus; Hit; Hatalom; Biztonság; Vegyesség; Identitás – a város alapításának, fenntartásának és megújításának feltételei. Egy értékelő mátrix segítségével összegezzük ezen archetípusok metafizikai jellemzőit, és amellett érvelünk, hogy ezek determinálják a központok fizikai tulajdonságait. Elismert szerzőkre hivatkozva ismertetjük a legelfogadottabb városmodellek hármas felosztását: a hagyományos / organikus, a modern / tervezett és a kortárs / széttagolt tipológiát. Azt állítjuk, hogy a hármas felosztás történelmi, elméleti-konceptuális háttere megalapozott. Ugyanakkor ez a hármasság nem foglalja magában azokat a „mérhető” – a tanulmányban felvázolt – szempontokat, amelyek segítségével a valósághoz jobban közelítő, a tervezési gyakorlatban könnyebben alkalmazható központmodellek vázolhatók fel.
Modelling the contribution of metacognitions and expectancies to problematic smartphone use
Authors: Casale Silvia , Fioravanti Giulia , Spada Marcantonio M. 
Published: February 2022

Abstract

Background and aims
In the current study we have sought to clarify the contribution of metacognitions concerning smartphone use relative to smartphone use expectancies in the relationship between well-established predisposing psychological factors and problematic smartphone use (PSU). We tested a model where psychological distress, impulsivity, and proneness to boredom predict metacognitions about smartphone use and smartphone use expectancies, which in turn predict PSU.

Methods
A sample of 535 participants (F = 71.2%; mean age = 27.38 ± 9.05 years) was recruited.

Results
The model accounted for 64% of the PSU variance and showed good fit indices (χ

2
= 16.01, df = 13, P = 0.24; RMSEA [90%CI] = 0.02 [0–0.05], CFI = 0.99; SRMR = 0.03). We found that: (i) when it comes to psychological distress and boredom proneness, negative metacognitions, and both positive and negative expectancies play a mediating role in the association with PSU, with negative metacognitions showing a dominant role; (ii) there is no overlap between positive expectancies and positive metacognitions, especially when it comes to smartphone use as a means for socializing; (iii) impulsivity did not show a significant effect on PSU Direct effects of the predictors on PSU were not found.

Discussion and conclusions
The current study found additional support for applying metacognitive theory to the understanding of PSU and highlight the dominant role of negative metacognitions about smartphone in predicting PSU.
Major intra‐familial variability in Unverricht‐Lundborg disease
Authors: Nasri Amina , Zidi Sabrina , Kacem Imen , Mrabet Saloua , Ben Djebara Mouna , Gargouri Amina , Leguern Eric , Gouider Riadh 
Published: February 2022

AbstractUnverricht‐Lundborg disease (ULD), also called progressive myoclonic epilepsy type 1, is usually characterized by the presence of ataxia associated with myoclonus and epileptic seizures without progressive cognitive deficit, presenting during late childhood and early adolescence. Currently, there is a growing body of evidence for atypical presentations of the disease with a milder phenotype or without the full symptomatology. We describe a case report of a late‐onset phenotype with progressive myoclonus‐ataxia syndrome accompanied by initial recurrent falls, resulting in specific phobia and agoraphobia starting at the age of 50 years old. The examination revealed multifocal myoclonus with cerebellar ataxia and electroencephalogram showed generalized polyspikes and spike‐wave discharges. Electromyogram revealed positive myoclonus of 60‐ms duration in the face and the presence of C reflex. A genetic study confirmed the diagnosis of ULD in the patient and other additional family members, presenting a wide range of intra‐familial variability. We discuss the challenging differential diagnosis for such a misleading presentation and its possible underlying pathophysiological mechanisms. Our case report may contribute to broadening the age and clinical boundaries for this disease and emphasizes the intra‐familial age and symptom variability. Based on a suggestive family history, the diagnosis of ULD should be considered in this context, even in older patients.
Knowledge gaps for functional outcomes after multilobar resective and disconnective pediatric epilepsy surgery: Conference Proceedings of the Patient‐Centered Stakeholder Meeting 2019
Authors: Jones Monika , Harris William B. , Perry M. Scott , Behrmann Marlene , Christodoulou Joanna , Fallah Aria , Kolb Bryan , Musiek Frank , Paul Lynn K. , Puka Klajdi , Salorio Cynthia , Sankar Raman , Smith Mary Lou , Naduvil Valappil Ahsan Moosa , Walshaw Patricia , Weiner Howard L. , Woo Raymond , Zeitler Phillip , Abel Taylor J. 
Published: February 2022

AbstractFor children with medication‐resistant epilepsy who undergo multilobar or hemispheric surgery, the goal of achieving seizure freedom is met with a variety of potential functional consequences, both favorable and unfavorable. However, there is a paucity of literature that comprehensively addresses the cognitive, medical, behavioral, orthopedic, and sensory outcomes across the lifespan following large epilepsy surgeries in childhood, leaving all stakeholders underinformed with regard to counseling and expectations. Through collaboration between clinicians, researchers, and patient/caregiver stakeholders, the “Functional Impacts of Large Resective or Disconnective Pediatric Epilepsy Surgery: Identifying Gaps and Setting PCOR Priorities” meeting was convened on July 18, 2019, to identify gaps in knowledge and inform various patient‐centered research initiatives. Clinicians and researchers with content expertise presented the best available data in each functional domain which is summarized here. As a result of the meeting, the top three consensus priorities included research focused on postoperative: (1) hydrocephalus; (2) mental health issues; and (3) literacy and other educational outcomes. The proceedings of this meeting mark the first time research on functional outcomes after resective and disconnective pediatric epilepsy surgery has been codified and shared among multidisciplinary stakeholders. This joint initiative promotes continued collaboration in the field and ensures that advancements align with actual patient and family needs and experiences. Collaboration around common objectives will lead to better informed counseling around postoperative expectations and management for children undergoing epilepsy surgery.
Imaging characteristics of temporopolar blurring in the context of hippocampal sclerosis
Authors: Clavijo Prado Carlos Andrés , Federico Paolo , Bernasconi Andrea , Bernhardt Boris , Caciagli Lorenzo , Concha Luis , Chinvarun Yotin , Jackson Graeme , Morgan Victoria , Rampp Stefan , Vaudano Anna Elisabetta , Wang Irene , Wang Shuang , Zaidan Bruna Cunha , Rogerio Fabio , Cendes Fernando 
Published: February 2022

AbstractWe present an illustrative case to address anterior temporal lobe atrophy with poor delineation of the temporopolar gray‐white matter interface based on T2‐weighted and fluid‐attenuated inversion recovery (FLAIR) images in patients with temporal lobe epilepsy associated with hippocampal sclerosis (TLE‐HS). A 52‐year‐old woman with pharmacoresistant seizures since the age of six months underwent a previous MRI scan using a suboptimal protocol which was reported as unremarkable. MRI performed according to an epilepsy protocol showed classic signs of left HS and ipsilateral temporal polar atrophy with blurring of the gray‐white matter boundary on FLAIR images. She underwent a left amygdalohippocampectomy and anterior temporal resection and remains seizure‐free after 24 months. Histopathological analyses showed HS and no signs of focal cortical dysplasia (FCD). Blurring and atrophy of the ipsilateral temporal pole are common in TLE‐HS and often misinterpreted as FCD. This relates to delayed myelination in patients with seizures before the age of two, is more pronounced on FLAIR sequences, and gives a false impression of cortical thickening. However, the T1‐weighted images show a relatively well‐demarcated cortical‐subcortical transition and normal cortical thickness. By contrast, the cortical thickening in FCD is observed on both T1‐weighted and FLAIR images. Since FCD also occurs in temporal lobe regions, it is important to differentiate the extra‐hippocampal MRI abnormalities in TLE‐HS from those likely to be FCD. This case highlights the importance of evaluation based on detailed imaging, which should always be conducted considering the EEG, seizure semiology, and other clinical information.