bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Roof Fracture Characteristics of Gob-Side Entry Retaining with Roof Cutting and Non-pillar Mining in Thick Coal Seam, China
Authors: Zhao Mengye , Zhu Lei , Huang Qingxiang , Xu Kai , Wu Yuyi , Gu Wenzhe 
Published: September 2021

AbstractBased on the S1201-2 large height mining in the 2–2 coal seam of Ningtiaota colliery with on-site microseismic measurement, physical simulation and theoretical analysis methods, this paper explores the rule of roof movement in thick coal seams with roof cutting and non-pillar (hereinafter referred to as RCN-P) mining, so as to obtain scientific and effective theoretical basis for entry support and to summarize the regional structural characteristics and dynamic periodic fracture characteristics. As can be seen from microseismic events, the entry roof is featured by "two zones and one line" along the horizontal direction, namely, the crack generation area, the roof movement area. Additionally, and the obvious lateral breaking of the entry roof on the coal wall is a typical feature of the thick coal seam with RCN-P mining. The roof is vertically divided into "three zones", the crack generation area, the roof movement area and the crack development area. The roof cutting activity mainly affects the overburden activity within the basic roof height range, which is also the roof movement area. In addition, the distribution frequency and the intensity of microseismic events indicate the roof periodic breaking characteristics. The "breaking pressure relief,” “advanced crack development,” and “the limit breaking state” of roof breaking corresponds to the initial, middle, and final stage of breaking in the periodic weighting process, respectively. Compared with the normal mining, the RCN-P mining reduces the periodic weighting length and increases the pressure strength. As is shown in the physical simulation experiment, the basic roof and the cutting control layer in the "regional structural characteristics" constitute the “large” and “small” structures with RCN-P mining. The basic roof key layer is the core to control the stability of the strata, and the breaking process from the cantilever beam to the short masonry beam of the roof-cutting control layer is the main cause of the entry stress. Correspondingly, the basic structure model of “short masonry-hinged” roof was proposed and the calculation method of support was established for the entry with RCN-P mining in thick coal seam, providing a research foundation for scientific and effective rock formation control.
Timing of Health Service Use Among Truck Drivers After a Work-Related Injury or Illness
Authors: Xia Ting , Collie Alex , Newnam Sharon , Lubman Dan I. , Iles Ross 
Published: September 2021

AbstractPurposesTimely delivery of treatment and rehabilitation is generally acknowledged to support injury recovery. This study aimed to describe the timing of health service use by injured truck drivers with work-related injury and to explore the association between demographic and injury factors and the duration of health service use.MethodsRetrospective cohort study of injured truck drivers with accepted workers’ compensation claims in the state of Victoria, Australia. Descriptive analyses examined the percentage of injured truck drivers using health services by service type. Logistic regression model examined predictors of any service use versus no service use, and predictors of extended service use (≥ 52 weeks) versus short-term use.ResultsThe timing of health service use by injured truck drivers with accepted workers’ compensation claims varies substantially by service type. General practitioner, specialist physician, and physical therapy service use peaks within the 14 weeks after compensation claim lodgement, whilst the majority of mental health services were accessed in the persistent phase beyond 14 weeks after claim lodgement. Older age, being employed by small companies, and claiming compensation for mental health conditions were associated with greater duration of health service use.ConclusionsInjured truck drivers access a wide range of health services during the recovery and return to work process. Delivery of mental health services is delayed, including for those making mental health compensation claims. Health service planning should take into account worker and employer characteristics in addition to injury type.
Pretense as alternative sense-making: a praxeological enactivist account
Authors: Weichold Martin , Rucińska Zuzanna 
Published: September 2021

AbstractThe project of this paper is to synthesize enactivist cognitive science and practice theory in order to develop a new account of pretend play. Pretend play is usually conceived of as a representationalist phenomenon where a pretender projects a fictional mental representation onto reality. It thus seems that pretense can only be explained in representationalist terms. In this paper, we oppose this usual approach. We instead propose not only new explanatory tools for pretend play, but also a fundamental reconceptualization of the phenomena of pretend play, that is, of the very explanandum of theories of pretense. To do so, we suggest combining the turn to action and embodiment in the cognitive sciences with the practice turn in the humanities. From our point of view, pretend play has to be seen in its role in human life as a whole, which is to help children to learn to master the complex sociocultural contingencies of the manifold social practices that make up social reality. Pretend play should therefore be conceived as alternative sense-making that is always related, in varying ways, to ordinary social practices. Pretenders do not need to project mental representations onto reality, but make sense of their surroundings in different ways than encultured adults in ordinary practices. In the paper, we spell out this view and show how it enables an enactivist reconceptualization of imagination, intentions and knowledge, which are usually thought of as being available only to representationalist accounts of pretense.
Tracking probabilistic truths: a logic for statistical learning
Authors: Baltag Alexandru , Rad Soroush Rafiee , Smets Sonja 
Published: September 2021

AbstractWe propose a new model for forming and revising beliefs about unknown probabilities. To go beyond what is known with certainty and represent the agent’sbeliefsabout probability, we consider a plausibility map, associating to each possible distribution a plausibility ranking. Beliefs are defined as in Belief Revision Theory, in terms of truth in the most plausible worlds (or more generally, truth in all the worlds that are plausible enough). We consider two forms of conditioning or belief update, corresponding to the acquisition of two types of information: (1) learning observable evidence obtained by repeated sampling from the unknown distribution; and (2) learning higher-order information about the distribution. The first changes only the plausibility map (via a ‘plausibilistic’ version of Bayes’ Rule), but leaves the given set of possible distributions essentially unchanged; the second rules out some distributions, thus shrinking the set of possibilities, without changing their plausibility ordering.. We look at stability of beliefs under either of these types of learning, defining two related notions (safe belief and statistical knowledge), as well as a measure of the verisimilitude of a given plausibility model. We prove a number of convergence results, showing how our agent’s beliefs track the true probability after repeated sampling, and how she eventually gains in a sense (statistical) knowledge of that true probability. Finally, we sketch the contours of a dynamic doxastic logic for statistical learning.
Digitalization in Buildings and Smart Cities on the Way to 6G
Authors: Konhäuser Walter 
Published: September 2021

AbstractThe energy turnaround created a high volatility in the energy production based on renewable energy. To integrate renewable energy economically in buildings and smart cities an additional concept of energy storage and energy supply based on energy management concepts must be claimed. The political views have changed during the last years and energy efficiency in buildings is seen important because 35% of greenhouse gas is produced by the final energy consumption. The deployment of local energy production concepts is an important step to energy turnaround. To generate and distribute energy effectively in buildings, digital components such as sensors, actuators, meters, and energy management systems must be installed in the buildings and the digital components must be able to communicate via communication networks. The paper describes systems for local energy generation, necessary communication networks for buildings and smart cities and digitization applications in industrial buildings. As an example of energy management, the Oktett64 system is presented, which is based on Enterprise IT technology and has implemented AI and blockchain technology. Digitalization with platforms such as Oktett64 are based on technologies that are superior to today's often commercially available Programmable Logic Controllers. The article also shows how the future mobile communications standards 5G beyond and 6G can offer special solutions for the digitization of buildings in their edge clouds.
Study of a surface coating present on a Renaissance Piety from the Museum of Ancient Art (Castello Sforzesco, Milan)
Authors: Fermo Paola , Colella Mario , Malagodi Marco , Fiocco Giacomo , Albano Michela , Marchioron Silvia , Guglielmi Vittoria , Comite Valeria 
Published: September 2021

AbstractThe surface coating present on a marble Piety dating to the Renaissance period and stored at the Castello Sforzesco-Museum of Ancient Art (Milan, Italy) was studied and chemically characterised. For this purpose, both portable non-invasive (XRF and colorimetric measurements) and micro-invasive techniques (FTIR-ATR and SEM-EDS), have been applied. The statue has been recently submitted to a restoration, since its surface appeared dark and yellowed, before an exhibition at the Louvre Museum and the original appearance of the marble surface recovered thanks to the surface coating removal. Through the analytical characterisation carried out before and after the marble cleaning, the presence of a degradation layer composed by gypsum was evidenced on the stone. The origin of this layer is ascribable to the exposure of the statue to outdoor environment and interaction with atmospheric pollution. The chemical nature of the coating applied at the end of nineteenth century also responsible for the surface alteration was hypothesized.
Generating novel plant genetic variation via genome editing to escape the breeding lottery
Authors: Schleif Nathaniel , Kaeppler Shawn M. , Kaeppler Heidi F. 
Published: September 2021

AbstractPlant breeding relies on the presence of genetic variation, which is generated by a random process of mutagenesis that acts on existing gene pools. This variation is then recombined into new forms at frequencies impacted by the local euchromatin and heterochromatin environment. The result is a genetic lottery where plant breeders face increasingly low odds of generating a “winning” plant genotype. Genome editing tools enable targeted manipulation of the genome, providing a means to increase genetic variation and enhancing the chances for plant breeding success. Editing can be applied in a targeted way, where known genetic variation that improves performance can be directly brought into lines of interest through either deletion or insertion. This empowers approaches that are traditionally difficult such as novel domestication and introgression of wild accessions into a germplasm pool. Furthermore, broader editing-mediated approaches such as recombination enhancement and targeted random mutagenesis bring novel ways of variation creation to the plant breeding toolbox. Continued development and application of plant genome editing tools will be needed to aid in meeting critical global crop improvement needs.
Neoadjuvant versus adjuvant management of resectable pancreas cancer: A review of the literature
Authors: Schlick Konstantin 
Published: September 2021

SummaryNeoadjuvant therapy is well-accepted in the treatment of borderline resectable and locally advanced PC, the benefit of neoadjuvant chemotherapy in patients with resectable disease, however, is currently not so clear. Here we provide an up date on the literature.
A Review of the Use of Psychoacoustic Indicators on Soundscape Studies
Authors: Engel Margret Sibylle , Fiebig André , Pfaffenbach Carmella , Fels Janina 
Published: September 2021

AbstractThis work reviews the literature of 46 peer-reviewed papers and presents the current status on the use of psychoacoustic indicators in soundscape studies. The selection of papers for a systematic review followed the PRISMA method. Afterwards, descriptive analysis and principal component analysis (PCA) were realised. For the PCA, the following parameters extracted from the papers were analysed: psychoacoustic indicator, hypothesis, statistical units, data collection method and major findings for each investigated psychoacoustic indicator. The results show an overview of the use of psychoacoustic indicators, through main hypothesis and findings for each psychoacoustic indicator i.e. the importance of statistical units, such as percentiles, to investigate the hypothesis related to the description of auditory descriptors and perceptual attributes. Another important finding is that many papers lack the specification of computation methods limiting the comparability of study results and impeding the meta-analyses.
Near-Instantaneously Self-Healing Coating toward Stable and Durable Electromagnetic Interference Shielding
Authors: Zou Lihua , Lan Chuntao , Zhang Songlin , Zheng Xianhong , Xu Zhenzhen , Li Changlong , Yang Li , Ruan Fangtao , Tan Swee Ching 
Published: September 2021

AbstractDurable electromagnetic interference (EMI) shielding is highly desired, as electromagnetic pollution is a great concern for electronics’ stable performance and human health. Although a superhydrophobic surface can extend the service lifespan of EMI shielding materials, degradation of its protection capability and insufficient self-healing are troublesome issues due to unavoidable physical/chemical damages under long-term application conditions. Here, we report, for the first time, an instantaneously self-healing approach via microwave heating to achieve durable shielding performance. First, a hydrophobic 1H,1H,2H,2H-perfluorooctyltriethoxysilane (POTS) layer was coated on a polypyrrole (PPy)-modified fabric (PPy@POTS), enabling protection against the invasion of water, salt solution, and corrosive acidic and basic solutions. Moreover, after being damaged, the POTS layer can, for the first time, be instantaneously self-healed via microwave heating for a very short time, i.e., 4 s, benefiting from the intense thermal energy generated by PPy under electromagnetic wave radiation. This self-healing ability is also repeatable even after intentionally severe plasma etching, which highlights the great potential to achieve robust and durable EMI shielding applications. Significantly, this approach can be extended to other EMI shielding materials where heat is a triggering stimulus for healing thin protection layers. We envision that this work could provide insights into fabricating EMI shielding materials with durable performance for portable and wearable devices, as well as for human health care."Image missing"
„Herren der Information“
Authors: Kniep Ronja 
Published: September 2021

ZusammenfassungDieser Beitrag analysiert digitale Geheimdienstüberwachung als Phänomen transnationaler Ordnungsbildung. Diese geht im Sinne von Pierre Bourdieus Feldbegriff einher mit der Herausbildung einer relativen Autonomie und symbolischer Herrschaft, also der Durchsetzung legitimer Deutungen. Mit einer konzeptionellen Differenzierung doxischer (unbestrittener) und orthodoxer (umstrittener) Formen symbolischer Herrschaft lässt sich eine Antwort darauf formulieren, warum digitale Überwachung trotz, und teilweise durch ihre Kontestation so gut funktioniert, ohne dabei den Wandel von Überwachungsdebatten zu vernachlässigen. Illustriert wird dieser Wandel anhand der Unterscheidung zwischen inländischer und ausländischer Kommunikation im Feld Signals Intelligence (Sigint). Die Inland-Ausland Unterscheidung wird im post-Snowden Diskurs aufgebrochen, aber nicht aufgelöst. Sie wird von einer stillen Form symbolischer Herrschaft in eine streitbare transformiert, also von einer durch Schweigen akzeptieren Selbstverständlichkeit (Doxa) zur herrschenden Meinung (Orthodoxie), der ein heterodoxer Bürger- und Menschenrechtsdiskurs gegenübersteht. Die politische Soziologie transnationaler Geheimdienstüberwachung soll sowohl zum Verständnis von Überwachung als auch zu einer neuen Betrachtungsweise von Macht und Herrschaft in der digitalen Konstellation beitragen. Die vorgeschlagene Feldperspektive ermöglicht zudem das Nachdenken über die von Regierungen relativ unabhängige, regelsetzenden Macht von Geheimdiensten, ohne dabei auf die Idee eines ‚deep state‘ zurückzugreifen.
Comparison of structural model reduction methods applied to a large-deformation wing box
Authors: Medeiros R.R. , Cesnik C.E.S. , Stodieck O. , Calderon D.E. , Cooper J.E. , Coetzee E.B. 
Published: September 2021

AbstractIn this paper, the accuracy and practical capabilities of three different reduced-order models (ROMs) are explored: an enhanced implicit condensation and expansion (EnICE) model, a finite element beam model, and a finite volume beam model are compared for their capability to accurately predict the nonlinear structural response of geometrically nonlinear built-up wing structures. This work briefly outlines the different order reduction methods, highlighting the associated assumptions and computational effort. The ROMs are then used to calculate the wing deflection for different representative load cases and these results are compared with the global finite element model (GFEM) predictions when possible. Overall, the ROMs are found to be able to capture the nonlinear GFEM behaviour accurately, but differences are noticed at very large displacements and rotations due to local geometrical effects.
Experimental and numerical investigation on a supersonic inlet with large bleed window
Authors: Yuan HC. , Zhang JS. , Wang YF. , Huang GP. 
Published: September 2021

AbstractThe design of a two-dimensional supersonic inlet with large bleed window at low Mach number was developed. Numerical simulation and wind tunnel experiments were carried out to investigate the aerodynamic performance and variable geometric rules of the inlet. The result indicates that the single-degree-of-freedom variable geometry scheme adopted in this paper guarantees the steady work of the inlet over a wide speed range. The large bleed window caused by rotation of the compression ramp appears near the throat at low Mach number. Low-pressure airflow near the bleed window neutralises the original high-pressure airflow behind the shock train, which decreases the overall pressure of the downstream region of the internal contraction section. To match the lower pressure, the structure of the shock train changes from strong $\lambda$-type to weak $\lambda$-type, and finally to a normal shock wave as backpressure increases at Mach number 2.5. Herein, the total pressure recovery coefficient of the inlet near the critical condition improves by 8.5% as the backpressure ratio (Pe/P0) adds from 13 to 14.6 at Mach number 2.5. It proves that the scheme is effective on terminal shock wave control and inlet performance improvement. In addition, due to the background wave and the bleed window, two kinds of shock wave oscillation occur when the backpressure ratio is 13.1.
Dimension estimates for iterated function systems and repellers. Part II
Authors: FENG DE-JUN , SIMON KÁROLY 
Published: September 2021

AbstractThis is the second part of our study on the dimension theory of
$C^1$
iterated function systems (IFSs) and repellers on
$\mathbb {R}^d$
. In the first part [D.-J. Feng and K. Simon. Dimension estimates for
$C^1$
iterated function systems and repellers. Part I. Preprint, 2020, arXiv:2007.15320], we proved that the upper box-counting dimension of the attractor of every
$C^1$
IFS on
${\Bbb R}^d$
is bounded above by its singularity dimension, and the upper packing dimension of every ergodic invariant measure associated with this IFS is bounded above by its Lyapunov dimension. Here we introduce a generalized transversality condition (GTC) for parameterized families of
$C^1$
IFSs, and show that if the GTC is satisfied, then the dimensions of the IFS attractor and of the ergodic invariant measures are given by these upper bounds for almost every (in an appropriate sense) parameter. Moreover, we verify the GTC for some parameterized families of
$C^1$
IFSs on
${\Bbb R}^d$
.
Dietary fibre and the gut–brain axis: microbiota-dependent and independent mechanisms of action
Authors: La Torre Danique , Verbeke Kristin , Dalile Boushra 
Published: September 2021

ABSTRACTDietary fibre is an umbrella term comprising various types of carbohydrate polymers that cannot be digested nor absorbed by the human small intestine. Consumption of dietary fibre is linked to beneficial effects on cognitive and affective processes, although not all fibres produce the same effects. Fibres that increase short-chain fatty acid (SCFA) production following modulation of the gut microbiota are thought to be the most potent fibres to induce effects on cognitive and affective processes. SCFAs can exert their effects by improving central, peripheral and systemic immunity, lowering hypertension and enhancing intestinal barrier integrity. Here, we propose additional mechanisms by which dietary fibres may contribute to improvements in affective and cognitive processes. Fibre-induced modulation of the gut microbiota may influence affective processes and cognition by increasing brain-derived neurotrophic factor levels. Depending on the physicochemical properties of dietary fibre, additional effects on affect and cognition may occur via non-microbiota-related routes, such as enhancement of the immune system and lowering cholesterol levels and subsequently lowering blood pressure. Mechanistic randomised placebo-controlled trials are needed to establish the effects of dietary fibre consumption and the magnitude of explained variance in affect and cognition when incorporating measurements of microbiota-dependent and microbiota-independent mechanisms in humans.
Anti-MOG autoantibody-associated schizophreniform psychosis
Authors: von Zedtwitz Katharina , Matteit Isabelle , Michel Maike , Feige Bernd , Runge Kimon , Denzel Dominik , Schlump Andrea , Nickel Kathrin , Schiele Miriam A. , Berger Benjamin , Prüss Harald , Urbach Horst , Domschke Katharina , Tebartz van Elst Ludger , Endres Dominique 
Published: September 2021

AbstractObjectives:Autoimmune mechanisms are related to disease development in a subgroup of patients with psychosis. The contribution of immunoglobulin G (IgG) antibodies against myelin oligodendrocyte glycoprotein (MOG) is mainly unclear in this context.Methods:Therefore, two patients with psychosis and anti-MOG antibodies – detected in fixed cell-based and live cell-based assays – are presented.Results:Patient 1 suffered from late-onset psychosis with singular white matter lesions in magnetic resonance imaging (MRI) and intermittent electroencephalography (EEG) slowing. Patient 2 suffered from a chronic paranoid–hallucinatory disorder with intermittent confusional states, non-specific white matter alterations on MRI, a disorganised alpha rhythm on EEG, and elevated cerebrospinal fluid protein. Both patients had anti-MOG antibody titres of 1 : 320 in serum (reference < 1 : 20).Conclusions:The arguments for and against a causal role for anti-MOG antibodies are discussed. The antibodies could be relevant, but due to moderate titres, they may have caused a rather ‘subtle clinical picture’ consisting of psychosis instead of ‘classical’ MOG encephalomyelitis.