bluuebunny/crossref_metadata_2025_split huggingface dataset:
3D anatomy and flow dynamics of net-depositional cyclic steps on the world’s largest submarine fan: a joint 3D seismic and numerical approach
Authors: Shao Da-Li , Fan Guo-Zhang , Wang Hai-Qiang , Ma Hong-Xia , Zuo Guo-Ping , Ding Liang-Bo , Cai Zheng , Li Wei-Qiang 
Published: November 2020

AbstractSupercritical flows are ubiquitous in natural environments; however, there is rare 3D anatomy of their deposits. This study uses high-quality 3D seismic datasets from the world’s largest submarine fan, Bengal Fan, to interpret 3D architectures and flow processes of Pliocene undulating bedforms that were related to supercritical flows. Bengal undulating bedforms as documented in this study were developed in unconfined settings, and are seismically imaged as strike-elongated, crescentic bedforms in plan view and as rhythmically undulating, upstream migrating, erosive, discontinuous reflections in section view. Their lee sides are overall 3 to 4 times steeper (0.28° to 1.19° in slope) and 3 to 4 times shorter (117 to 419 m in length) than their stoss flanks and were ascribed to faster (high flow velocities of 2.70 to 3.98 m/s) supercritical flows (Froude numbers of 1.53 to 2.27). Their stoss sides, in contrast, are overall 3 to 4 times gentler (0.12° to 0.27° in slope) and 3 to 4 times longer (410 to 1139 m in length) than their lee flanks and were related to slower (low velocities of 2.35 to 3.05 m/s) subcritical flows (Froude numbers of 0.58 to 0.97). Bengal wave-like features were, thus, created by supercritical-to-subcritical flow transformations through internal hydraulic jumps (i.e., cyclic steps). They have crests that are positive relative to the surrounding region of the seafloor, suggesting the predominant deposition of draping sediments associated with net-depositional cyclic steps. Turbidity currents forming Bengal wave-like features were, thus, dominated by deposition, resulting in net-depositional cyclic steps. Sandy deposits associated with Bengal net-depositional cyclic steps are imaged themselves as closely spaced, strike-elongated high RMS-attribute patches, thereby showing closely spaced, long and linear, strike-elongated distribution patterns.
Exciton recycling via InP quantum dot funnels for luminescent solar concentrators
Authors: Bahmani Jalali Houman , Sadeghi Sadra , Baylam Isinsu , Han Mertcan , Ow-Yang Cleva W. , Sennaroglu Alphan , Nizamoglu Sedat 
Published: November 2020

AbstractLuminescent solar concentrators (LSC) absorb large-area solar radiation and guide down-converted emission to solar cells for electricity production. Quantum dots (QDs) have been widely engineered at device and quantum dot levels for LSCs. Here, we demonstrate cascaded energy transfer and exciton recycling at nanoassembly level for LSCs. The graded structure composed of different sized toxic-heavy-metal-free InP/ZnS core/shell QDs incorporated on copper doped InP QDs, facilitating exciton routing toward narrow band gap QDs at a high nonradiative energy transfer efficiency of 66%. At the final stage of non-radiative energy transfer, the photogenerated holes make ultrafast electronic transitions to copper-induced mid-gap states for radiative recombination in the near-infrared. The exciton recycling facilitates a photoluminescence quantum yield increase of 34% and 61% in comparison with semi-graded and ungraded energy profiles, respectively. Thanks to the suppressed reabsorption and enhanced photoluminescence quantum yield, the graded LSC achieved an optical quantum efficiency of 22.2%. Hence, engineering at nanoassembly level combined with nonradiative energy transfer and exciton funneling offer promise for efficient solar energy harvesting.
Sand failure: effect of biocide on the geomechanical properties of outcrop carbonate rock under static condition
Authors: Wuyep Elizabeth , Oluyemi Gbenga , Yates Kyari , Akisanya Alfred R. 
Published: November 2020

AbstractThe effects of chemical interaction of a biocide with formation rocks on the rock geomechanical properties are examined. A combination of analytical tests (scanning electron microscopy/energy-dispersive X-ray analysis, X-ray powder diffraction and particle size distribution) and uniaxial compression test was used in this study. The particle size distribution in the effluent showed an increase in D50 with poor sorting for the chemically treated outcrop carbonate core samples. The XRPD shows evidence of altered minerals in the chemically treated samples. It was observed that the interaction led to precipitation of new materials that clogged the pore space of the samples leading to up to 150% increase in compressive strength of the carbonate following treatment with the biocide. The results give more insight into the limitations of existing sand production prediction models with respect to the effect of oilfield chemicals on the strength of the reservoir rocks.
An activity theory approach toward teacher professional development at scale (TPD@Scale): A case study of a teacher learning center in Indonesia
Authors: Lim Cher Ping , Juliana  , Liang Min 
Published: November 2020

AbstractContinuous teacher professional development (TPD) ensures that teachers have the capacity to continually plan and implement quality teaching and learning that supports students in achieving their expected program/course learning outcomes. However, teachers’ access to quality TPD is a challenge due to geographical limitations, gender, special needs, marginalized communities, and the government’s policies, or lack of policies, regarding teachers. There are tensions between quality and equity, and cost implications that may hinder the scaling up of quality TPD programs. This paper adopts an activity theory approach to examine how a teacher learning center (TLC) in a regency of Indonesia enhances teachers’ access to quality TPD. The findings reveal that teachers learn in the TLC through different TPD activities. Information and Communication Technologies (ICT) are found to mediate the professional learning activities, learning resources, learning support, and assessments in the TLC. Furthermore, three key stakeholders—the local government, teacher working groups, and school principals—play significant roles in supporting teachers’ professional learning in the TLC.
The digitization of the automated steel construction through the application of microcontrollers and MQTT
Authors: Dai Rushi , Kerber Ethan , Reuter Felix , Stumm Sven , Brell-Cokcan Sigrid 
Published: November 2020

AbstractData acquisition and transfer are crucial aspects of the digitization and automation of construction workflows. Through the integration of microcontrollers in machinery, a multitude of data can be acquired and analyzed to adapt fabrication processes and optimize performance. The goal of this research was to develop connected multi-functional robotic systems that can transfer data across a wireless network through MQTT, a robust and lightweight IoT communication protocol. This research demonstrates a use case for such interconnected robotic technology by establishing wireless communication through MQTT between a mobile robot and a plasma cutting station. A microcontroller was utilized in the digitization and automation of this steel construction process to obtain, process and transfer the data in a way that was monitorable and storable for managing and optimizing workflows.
State-based safety analysis method for dynamic evaluation of failure effect
Authors: Wu Yuqian , Xiao Gang , Wang Miao 
Published: November 2020

AbstractSystem state that represents a combined influence of internal and external system parameters on the overall failure effect plays a significant role in failure effect analysis. The traditional safety analysis methods can hardly evaluate the overall failure impact due to the dynamic failure behaviors in diverse system interaction situations. To overcome this problem, this paper proposes a state-based safety analysis method for dynamic evaluation of the failure effect combining the situation factor. First, a hierarchical modeling framework that includes functional logic, physical architecture, and the failure mode is constructed, and then the cross-linking relationships between items are characterized by the state machines. Particularly, the event transmission mechanism and the global attribute updating mechanism are designed to realize the state synchronization of various systems, thus enabling the global propagation of failure. The feasibility of the proposed method is verified by simulations. The Enterprise Architect platform is used to model the aircraft integrated surveillance system and analyze the effects of different failure modes in typical situations. The proposed method complements the failure effect evaluation accuracy considering the dynamic interaction situations, thus realizing the global perception of the safety state, enhancing the dynamics and integrity of the failure effect analysis process.
The interplay between two Euler–Lagrange operators relating to the nonlinear elliptic system $$\Sigma [(u, {\mathscr {P}}), \varOmega ]$$
Authors: Morrison George , Taheri Ali 
Published: November 2020

AbstractWe establish the existence of multiple whirling solutions to a class of nonlinear elliptic systems in variational form subject to pointwise gradient constraint and pure Dirichlet type boundary conditions. A reduced system for certain $$\mathbf{SO}(n)$$

SO
(
n
)

-valued matrix fields, a description of its solutions via Lie exponentials, a structure theorem for multi-dimensional curl free vector fields and a remarkable explicit relation between two Euler–Lagrange operators of constrained and unconstrained types are the underlying tools and ideas in proving the main result.
Co-actions, Isometries, and isomorphism classes of Hilbert modules
Authors: Kučerovský Dan Z. 
Published: November 2020

AbstractWe show that aA-linear map of HilbertA-modules is induced by a unitary Hilbert module operator if and only if it extends to an ordinary unitary on appropriately defined enveloping Hilbert spaces. Applications to the theory of multiplicative unitaries let us to compute the equivalence classes of Hilbert modules over a class ofC*-algebraic quantum groups. We, thus, develop a theory that, for example, could be used to show non-existence of certain co-actions. In particular, we show that the Cuntz semigroup functor takes a co-action to a multiplicative action.
A Global Collaboration for Community-Based Disaster Preparation and Health Promotion: Fukushima to Zuunbayan in Mongolia
Authors: Yamada Chieri , Tsedendamba Bolormaa , Shajbalidir Amarbileg , Horiuchi Teruko , Suenaga Katsuko , Gun-Aajav Manlaijav , Enkhgerel Nyamdavaa , Palam Enkhtuya 
Published: November 2020

AbstractExcessive radiation exposure has adverse effects on health. In Fukushima, psychological issues such as anxiety are still affecting people nine years after the Fukushima nuclear power plant accident in 2011. In light of the lessons learned from Fukushima communities, a joint Japanese and Mongolian research team introduced a community program to the Zuunbayan district in Mongolia, which is located near a uranium deposit, to promote good health by strengthening radiation emergency preparedness. The program, which commenced in 2017, aimed to increase community participation, education, information dissemination, and capacity of community preparedness. After two years a monitoring study showed that, out of 227 respondents, the proportions who thought that any level of radiation was dangerous decreased from 53.3% in 2017 to 33.9% in 2019. Moreover, half of the respondents knew that there were safe and unsafe radiation levels and that their community was safe. This global collaboration demonstrated that a lesson learned from a disaster can be applied to other countries and changed people’s recognition and behavior toward good health and disaster/emergency preparedness.
Symptoms Associated With Personal Protective Equipment Among Frontline Health Care Professionals During the COVID-19 Pandemic
Authors: Çağlar Ahmet , Kaçer İlker , Hacımustafaoğlu Muhammet , Öztürk Berkant , Öztürk Kemal 
Published: November 2020

AbstractObjective:Personal protective equipment (PPE) use is frequently construed as inconvenient and disturbing by health care professionals (HCPs). We hypothesized that new-onset symptoms among HCPs may be associated with extended use of PPE and aimed to investigate risk factors related with new-onset symptoms. In addition, the effects of new-onset symptoms on working performance were evaluated.Methods:In this cross-sectional study, 315 participants filled out a questionnaire that contains 4 main parts: (1) demographics, (2) new-onset symptoms with PPE use, (3) PPE usage hours, and (4) personal opinion about the effect of sensed symptoms on working performance.Results:The mean age was 31.58 ± 4.6 years, and 50.5% (n = 159) were female. New-onset symptom rate was 66% (n = 208). The most common new-onset symptom was headache (n = 115, 36.5%) followed by breathing difficulty-palpitation (n = 79, 25.1%), and dermatitis (n = 64, 20.3%). Extended use of PPE, smoking, and overweight were independently associated with developing new-onset symptoms. A clear majority of symptomatic participants pointed out the impact on working performance (193/208, 92.7%).Conclusion:Hospitals should take the necessary precautions (eg, shorter shifts and more frequent breaks) to prevent symptoms associated with PPE and ensure that HCPs comply with these precautions.
Personal factors classification revisited: A proposal in the light of the biopsychosocial model of the World Health Organization (WHO)
Authors: Grotkamp Sabine , Cibis Wolfgang , Brüggemann Silke , Coenen Michaela , Gmünder Hans Peter , Keller Klaus , Nüchtern Elisabeth , Schwegler Urban , Seger Wolfgang , Staubli Stefan , von Raison Bia , Weißmann Regina , Bahemann Andreas , Fuchs Harry , Rink Marion , Schian Marcus , Schmitt Klaus 
Published: November 2020

AbstractIn 2010, we proposed a personal factor classification which was published in this journal. Since then, the International Classification of Functioning, Disability and Health (ICF) of the World Health Organization (WHO) and the biopsychosocial model were increasingly incorporated into the German Social Law Code for participation and rehabilitation, implying that personal factors are indispensable for individual assessments. For the present study, we aimed to come up with an updated version of the personal factors classification based on current research. To achieve this goal, we employed a qualitative approach to re-examine the basic structure, consistency, and selection of categories in the classification from our 2010 study, to amend and supplement the categories to reflect best practice personal factor classifications. Our findings indicate that the basic structure remained largely unchanged, with relatively minor changes, including the deletion of 5 categories from our 2010 classification, 10 categories revised in format or content, and 13 new categories. We believe our revised classification to be useful for supporting users in systematically, comprehensively, and transparently reporting influences on specific aspects of individuals’ life and living background on their functioning and participation, thus facilitating an equitable allocation of disability benefits.
Factors associated with the development of paediatric chronic otitis media by age nine: a prospective longitudinal cohort study of 6560 children
Authors: Clamp P J , De-Loyde K , Maw A R , Gregory S , Golding J , Hall A 
Published: November 2020

AbstractObjectiveThis study aimed to analyse social, health and environmental factors associated with the development of chronic otitis media by age nine.MethodThis was a prospective, longitudinal, birth cohort study of 6560 children, reviewed at age nine. Chronic otitis media defined as previous surgical history or video-otoscopic changes of tympanic membrane retraction, perforation or cholesteatoma. Non-affected children were used as the control group.ResultsUnivariate analysis demonstrated an association between chronic otitis media and otorrhoea, snoring, grommet insertion, adenoidectomy, tonsillectomy, hearing loss, abnormal tympanograms and preterm birth. Multivariate analysis suggests many of these factors may be interrelated.ConclusionThe association between chronic otitis media and otorrhoea, abnormal tympanograms and grommets supports the role of the Eustachian tube and otitis media (with effusion or acute) in the pathogenesis of chronic otitis media. The role of snoring, adenoidectomy and tonsillectomy is unclear. Associations suggested by previous studies (sex, socioeconomic group, parental smoking, maternal education, childcare, crowding and siblings) were not found to be significant predictors in this analysis.
Lawfulness and Ethics around Cultural Property Auctions: The Case of the Barbier-Mueller Pre-Columbian Collection
Authors: Ruiz Romero Zara 
Published: November 2020

AbstractIn March 2013, the Barbier-Mueller collection of pre-Columbian art was auctioned at Sotheby’s Paris. This event ended with the sale of half of the works offered and generated a confrontation between six of the countries of origin of the artifacts, which were absolutely opposed to the sale, and the Sothebys’ Parisian branch. This article, taking the case described above as a reference, intends to analyze the ethical considerations and lawfulness implied in the buying and selling of cultural property at auction. With this purpose in mind, the arguments held by both parties in this disagreement are analyzed. At the same time, the efficacy of national laws, international conventions, and regulations is considered, mainly with reference to the use of principles and ethical codes that seem to be applied when the law has no jurisdiction.
In Search of the Holy Grail of the Conflict of Laws of Cultural Property: Recent Trends in European Private International Law Codifications
Authors: Szabados Tamás 
Published: November 2020

AbstractMost private international laws do not address cultural property specifically but, instead, apply the generallex rei sitaerule also to artifacts. Legal scholarship has revealed the flaws of the rigid application of thelex rei sitaeprinciple to cultural goods and has proposed alternative connecting factors, such as thelex originisprinciple, to prevent forum and law shopping in this field. Reacting to the criticisms, some of the more recent private international law codifications have decided on the adoption of specific rules on stolen and illegally exported cultural goods that combine thelex rei sitaeand thelex originisrules and provide room for the parties’ autonomy. This article draws the conclusion that these more recent legislative solutions do not necessarily promote legal certainty and predictability with regard to the governing law and are far from being a Holy Grail for the conflict of laws of cultural property, whether on a national level or within the European Union.
Weight impacts 1-year congenital heart surgery outcomes independent of race/ethnicity and payer
Authors: Siddiqui Saira , Anderson Brett R. , LaPar Damien J. , Kalfa David , Chai Paul , Bacha Emile , Freud Lindsay 
Published: November 2020

AbstractBody mass index, race/ethnicity, and payer status are associated with operative mortality in congenital heart disease (CHD). Interactions between these predictors and impacts on longer term outcomes are less well understood. We studied the effect of body mass index, race/ethnicity, and payer on 1-year outcomes following elective CHD surgery and tested the degree to which race/ethnicity and payer explained the effects of body mass index. Patients aged 2–25 years who underwent elective CHD surgery at our centre from 2010 to 2017 were included. We assessed 1-year unplanned cardiac re-admissions, re-interventions, and mortality. Step-wise, multivariable logistic regression was performed.Of the 929 patients, 10.4% were underweight, 14.9% overweight, and 8.5% obese. Non-white race/ethnicity comprised 40.4% and public insurance 29.8%. Only 0.5% died prior to hospital discharge with one additional death in the first post-operative year. Amongst patients with continuous follow-up, unplanned re-admission and re-intervention rates were 14.7% and 12.3%, respectively. In multivariable analyses adjusting for surgical complexity and surgeon, obese, overweight, and underweight patients had higher odds of re-admission than normal-weight patients (OR 1.40, p = 0.026; OR 1.77, p < 0.001; OR 1.44, p = 0.008). Underweight patients had more than twice the odds of re-intervention compared with normal weight (OR 2.12, p < 0.001). These associations persisted after adjusting for race/ethnicity, payer, and surgeon.Pre-operative obese, overweight, and underweight body mass index were associated with unplanned re-admission and/or re-intervention 1-year following elective CHD surgery, even after accounting for race/ethnicity and payer status. Body mass index may be an important modifiable risk factor prior to CHD surgery.
Balloon coarctation angioplasty with non-compliant balloon in low-birth-weight premature infants
Authors: Gursu H. Alper , Cetin I. Ilker , Ece Ibrahim 
Published: November 2020

AbstractAlthough surgery is the standard treatment for native coarctation in neonates, it carries a high risk of complications. Percutaneous balloon angioplasty may be considered as an alternative treatment. The materials used in the intervention should be selected carefully to reduce complications. We recommended the use of non-compliant balloons in risky babies. They are more effective in the treatment of strick stenosis than compliant balloons.
Determining the input reflection coefficient of integrated antennas using over-the-air measurements under near-field conditions
Authors: van den Biggelaar A.J. , Daverveld D.P.P. , Reniers A.C.F. , Smolders A.B. , Johannsen U. 
Published: November 2020

AbstractOne of the current trends in the integrated circuit (IC) development is the integration of antennas on-chip or in the package of the IC. This poses challenges in the production testing process of the packaged IC, as the antenna functionality has to be included and at least one of the signal ports cannot be accessed at a conducted manner. In order to measure the reflection coefficient of an integrated antenna, a contactless characterization method (CCM) can be used. In this paper, the practicality of a CCM is assessed, having the application of a cost-effective high-volume testing procedure for integrated antennas in mind. It is shown that the CCM yields accurate results for different imperfections in the measurement setup. Moreover, measurement results around 33 GHz using a connectorized patch antenna are shown, which experimentally verify the validity of using the CCM under near-field conditions.