Reception Mechanism Research Articles

Reduced expression of Il10, Stat3, Hoxa10, and Itgb3 in the embryo implantation site of rat model with prenatal androgen-induced polycystic ovary syndrome.

Impaired implantation due to the reduced endometrial receptivity considers an etiology for infertility in polycystic ovary syndrome (PCOS). In this context, we aimed to compare the expression of interleukin 10 (Il10), homeobox A10 (Hoxa10), signal transducer and activator of transcription 3 (Stat3), and β3-integrin (Itgb3) in the embryo implantation site of a prenatally-androgenized rat model of PCOS before and during gestation. PCOS rat model was created by the injection of testosterone prenatally. The uterine tissues were collected before pregnancy (day 0) and on days 0.5, 4.5, 5.5, and 8.5 of gestation in the PCOS rat model and controls (n=6; each group). RNA was extracted from the uterine samples and reverse transcribed to cDNA. Expression levels of Il10, Stat3, Hoxa10, and Itgb3 were measured using SYBR Green real-time RT-PCR and compared between the two groups. PCOS rats showed decreased expression levels of the Il10 on day 8.5 compared to control rats. The mRNA levels of Hoxa10, Itgb3, and Stat3 were significantly decreased in the PCOS group on day 0 as well as on days 0.5, 4.5, 5.5, and 8.5 for Hoxa10, Itgb3, and Stat3. The decreased gene expression of Il10, Hoxa10, Stat3, and Itgb3 in the PCOS rat model indicates the importance of the Il10 signaling axis as one of the possible disrupted mechanisms of endometrial receptivity in PCOS.

Defense against Adversarial Patch Attacks for Aerial Image Semantic Segmentation by Robust Feature Extraction

Deep learning (DL) models have recently been widely used in UAV aerial image semantic segmentation tasks and have achieved excellent performance. However, DL models are vulnerable to adversarial examples, which bring significant security risks to safety-critical systems. Existing research mainly focuses on solving digital attacks for aerial image semantic segmentation, but adversarial patches with physical attack attributes are more threatening than digital attacks. In this article, we systematically evaluate the threat of adversarial patches on the aerial image semantic segmentation task for the first time. To defend against adversarial patch attacks and obtain accurate semantic segmentation results, we construct a novel robust feature extraction network (RFENet). Based on the characteristics of aerial images and adversarial patches, RFENet designs a limited receptive field mechanism (LRFM), a spatial semantic enhancement module (SSEM), a boundary feature perception module (BFPM) and a global correlation encoder module (GCEM), respectively, to solve adversarial patch attacks from the DL model architecture design level. We discover that semantic features, shape features and global features contained in aerial images can significantly enhance the robustness of the DL model against patch attacks. Extensive experiments on three aerial image benchmark datasets demonstrate that the proposed RFENet has strong resistance to adversarial patch attacks compared with the existing state-of-the-art methods.

Art history research in scientific discourse

It is noted in the article that art historical research occupies a prominent place in the scientific discourse. The work on the identification of obscure views on music as a phenomenon in the cultural and anthropological tradition of music is carried out. It is proved that scientists interpret the painting as a semiotic system with its special image code, the information of which can be decoded. The secondary verbal expression of such messages in the text of art is possible due to the mechanism of interpretation. It is concluded that the non-verbal type of artistic creativity is comprehended by the subject in the form of the inclusion of the mechanism of reception, evaluated, transformed into a verbal code, and thus interpreted.

Receptivity and its influence on transition prediction of a hypersonic boundary layer over a small bluntness cone

Hypersonic boundary-layer receptivity is investigated using direct numerical simulation for Mach 6 flow over a 0.79 mm nose radius, 5° half-angle cone to slow acoustic waves. Two ways of exciting the second mode are discovered: For a low-frequency forcing (region I where f < 370 kHz), the first mode is initially excited and subsequently evolves into the second mode, whereas for a high-frequency forcing (region II where f≥ 370 kHz), the second mode is excited through the disturbances in the entropy layer. The receptivity mechanisms corresponding to the first and second modes are consistent with those of a previously investigated large bluntness cone. The receptivity coefficient shows a dramatical decrease with the frequency for disturbances in region I while a slight increase for disturbances in region II. The results show that the correlation between the receptivity coefficient of the first mode and the frequency proposed for large bluntness cones also applies to the current case. Furthermore, with receptivity and the measured freestream noise spectra taken into account, it is found that at the measured transition location, the disturbance predicted by the traditional eN method is no longer the most amplified disturbance, since the disturbances with lower frequencies can acquire larger amplitudes due to their large receptivity coefficients despite their smaller growth rates.

Stochastic modeling for energy efficiency in modified directional discontinuous reception for LTE‐5G networks

SummaryFifth‐generation (5G) networks deal with high‐frequency data rates, ultra‐low latency, more reliability, massive network capacity, more availability, and a more uniform user experience. To validate the high‐frequency rates, 5G networks engage beam searching operation. By adopting a beam searching state between the short and long sleep, one can reduce the system's delay. The energy consumption of user equipment (UE) in 5G networks is much higher than in the 4G networks. To reduce the energy consumption and increase the energy saving in UE, Long‐Term Evolution (LTE)‐5G networks adopt the discontinuous reception (DRX) scheme with a fixed number of short sleep. LTE‐DRX without beam search operation (i.e., beam alignment) cannot work in 5G networks. Hence, keeping this scenario in mind, we have modeled a new modified directional discontinuous reception (MD‐DRX) mechanism for LTE‐5G networks. The MD‐DRX mechanism captures the behavior of a beam searching, an inactive, an active, a long sleep, an ON, and a short sleep states. The short sleep state consists of a maximum short sleep. To get the optimal energy saving and energy consumption (i.e., energy efficiency) from the MD‐DRX mechanism, it is required to check the system's throughput. The trade‐off between energy saving/energy consumption and throughput will provide the system's optimal energy saving and optimal energy consumption. In this paper, we have obtained the system's optimal energy saving and throughput by optimizing the maximum short sleep and short sleep duration. To get the energy efficiency for LTE‐5G networks, the trade‐off between average energy consumption/energy saving and throughput is shown.

Distinguishing Plasmin-Generating Microvesicles: Tiny Messengers Involved in Fibrinolysis and Proteolysis.

A number of stressors and inflammatory mediators (cytokines, proteases, oxidative stress mediators) released during inflammation or ischemia stimulate and activate cells in blood, the vessel wall or tissues. The most well-known functional and phenotypic responses of activated cells are (1) the immediate expression and/or release of stored or newly synthesized bioactive molecules, and (2) membrane blebbing followed by release of microvesicles. An ultimate response, namely the formation of extracellular traps by neutrophils (NETs), is outside the scope of this work. The main objective of this article is to provide an overview on the mechanism of plasminogen reception and activation at the surface of cell-derived microvesicles, new actors in fibrinolysis and proteolysis. The role of microvesicle-bound plasmin in pathological settings involving inflammation, atherosclerosis, angiogenesis, and tumour growth, remains to be investigated. Further studies are necessary to determine if profibrinolytic microvesicles are involved in a finely regulated equilibrium with pro-coagulant microvesicles, which ensures a balanced haemostasis, leading to the maintenance of vascular patency.

La and Fe co-doped walnut-like cubic-rhombohedral-In2O3 for highly sensitive and selective detection of acetone vapor

Cubic-rhombohedral-In2−2xLaxFexO3 (x = 0, 0.03, and 0.05) composites were prepared by a hydrothermal method. XRD and SEM reveal that pristine cubic-rhombohedral-In2O3 composite mainly consisted of In2O3 nanoparticles in the cubic phase, while introducing appropriate amount of La and Fe ions (x = 0.03 and 0.05) promoted the growth of rhombohedral-In2O3 nanosheets, which constituted the backbones of fuzzy walnut-like hierarchical structure. BET and XPS show that the La and Fe co-doped cubic-rhombohedral-In2O3 composites are higher in the BET surface area and the relative contents of surface In+ ions and OV. From the reception and conduction mechanisms, the highly sensitive and selective detection of acetone by In1.90La0.05Fe0.05O3 is attributed to the fuzzy walnut-like hierarchical structure with enhanced surface reactivity and efficient heterojunction between cubic-In2O3 and rhombohedral-In2O3.

DRFnet: Dynamic receptive field network for object detection and image recognition.

Biological experiments discovered that the receptive field of neurons in the primary visual cortex of an animal's visual system is dynamic and capable of being altered by the sensory context. However, in a typical convolution neural network (CNN), a unit's response only comes from a fixed receptive field, which is generally determined by the preset kernel size in each layer. In this work, we simulate the dynamic receptive field mechanism in the biological visual system (BVS) for application in object detection and image recognition. We proposed a Dynamic Receptive Field module (DRF), which can realize the global information-guided responses under the premise of a slight increase in parameters and computational cost. Specifically, we design a transformer-style DRF module, which defines the correlation coefficient between two feature points by their relative distance. For an input feature map, we first divide the relative distance corresponding to different receptive field regions between the target feature point and its surrounding feature points into N different discrete levels. Then, a vector containing N different weights is automatically learned from the dataset and assigned to each feature point, according to the calculated discrete level that this feature point belongs. In this way, we achieve a correlation matrix primarily measuring the relationship between the target feature point and its surrounding feature points. The DRF-processed responses of each feature point are computed by multiplying its corresponding correlation matrix with the input feature map, which computationally equals to accomplish a weighted sum of all feature points exploiting the global and long-range information as the weight. Finally, by superimposing the local responses calculated by a traditional convolution layer with DRF responses, our proposed approach can integrate the rich context information among neighbors and the long-range dependencies of background into the feature maps. With the proposed DRF module, we achieved significant performance improvement on four benchmark datasets for both tasks of object detection and image recognition. Furthermore, we also proposed a new matching strategy that can improve the detection results of small targets compared with the traditional IOU-max matching strategy.

Multireceptive field: An adaptive path aggregation graph neural framework for hyperspectral image classification

In recent years, the applications of graph convolutional networks (GCNs) in hyperspectral image (HSI) classification have attracted much attention. However, hyperspectral classification faces problems such as complex noise effects, spectral variability, labelled training sample deficiency, and high spectral mixing between materials. Furthermore, the available GCN-based methods are computationally complex and cannot automatically adjust aggregate paths. To mitigate these issues, we propose a novel multiadaptive receptive field-based graph neural framework (MARP) for HSI classification. In our method, an adaptive receptive path aggregation (ARP) mechanism is proposed to suppress the impact of noise nodes on classification and automatically explore an adaptive receptive field, where a graph attention (GAT) neural network is introduced to learn the importance of different-sized neighbourhoods and a long short-term memory (LSTM) method is adopted to update the nodes and preserve the local convolutional features of the nodes. To address the problem that ARP may fall into a local optimum, we design a multiscale receptive mechanism. Extensive experimental results obtained on four public HSI datasets demonstrate that the proposed MARP method can mitigate oversmoothing and reduce computational complexity while achieving competitive performance when compared to several state-of-the-art methods.

Oriental Studies as an Academic Field and Its Prospects in Russia

The article analyses the evolution of the concepts of “Orient” and “Oriental Studies” throughout history and offers a new approach to interpreting Oriental Studies as a complex academic field. It also discusses the trajectories of its further development in Russia. The author believes that Oriental Studies should centre upon the degree to which Asian and African societies embraced Westernisation, mechanisms of reception of Western culture by their traditional non-Western structures and consequences of this reception. In accordance with this interpretation, Chinese studies as well as other fields that focus on major non-Western civilisations (Indology, Middle Eastern and African studies) fall into a broader academic category of Oriental studies instead of turning into mere subfields of Area Studies. The article maintains that it is essential to move away from Western-centrism, however, this should not be substituted with the opposing extremes: the ideas of supremacy of the East over the West or the theory of the original sin of the West and its demands to “cancel” the field of Oriental studies as “colonialist” or “racist”. Not only would this trend lead to a new wave of ideologization in academia, it may also trigger a new wave of demands to “decolonise” Russia and its academic circles.

TRANSFER OF LANGUAGE SKILLS FROM THE BAMBARA LANGUAGE TO THE FRENCH LANGUAGE: SOME PROBLEMS OF GRAMMATICAL STRUCTURES

The paper focuses on the processes of transfer of linguistic skills from the learners’ mother tongue to the discovered second language. Language transfer and acquisition promote the psychological adaptation and orientation of target learners and teachers. The acquisition of a second language uses the psychological theory which defines the mechanism of reception and production of a new language by the brain. Psychological theory is used to study, develop and implement this paper. An exploratory research method is used to arrive at the results. In this case, the qualitative approach was used to collect qualitative data and information on this subject matter. The aspiration is to describe the challenges that learners face in discovering and using the second language at school. The quality of education depends on the quality of the language of instruction at school.

A comparative and acceptance study of women’s discourse in Chinese-American online stand-up comedy

As an emerging form of comedy, stand-up comedy has developed rapidly and attracted widespread attention in various countries today through the production and dissemination mode of new media. In order to better understand the cultural characteristics of stand-up comedy and provide methodological inspiration for contemporary feminist public expression, this essay focuses on online stand-up comedy in China and the United States. Drawing on relevant theories from feminism, gender sociology, reception aesthetics, and communication studies, this essay uses textual close reading and comparative analysis to examine the expressive characteristics and reception mechanisms of women’s discourse in these two countries. Through analysis, this essay concludes that the female comedic discourse in China and the United States, which differs in perspective, expressive approach, and offense and its re-speaking, is repeatedly negotiating resistance or compromise at the intersection of the three influencing factors, namely, the diachronic socio-cultural traditions, the synchronic audience acceptance, and the external impact of the market and censorship.

Experiment on jet–vortex interaction for variable mutual spacing

The interaction of a line vortex with a collinearly aligned jet is a prototypical configuration for various important applications in aeronautics. The purpose of this study is to analyze the impact of the jet flow on the kinematics and dynamics of a trailing vortex. A particular emphasis is on the effect of a variable relative jet–vortex spacing. To this end, we realized four different jet–vortex configurations in a wind tunnel experiment at a chord-based Reynolds number of 1.7×105 using high-speed stereo particle image velocimetry measurements in five transversal planes located between 2 and 26 chords behind the wing. Stochastic analyses reveal that the jet generally contributes an external excitation to the vortex as a function of the mutual spacing. Compared with the configuration without jets, the vortex amplification increases upon reducing the jet–vortex spacing. Most notably, for all but the closest spacing, the vortex response is qualitatively the same, changing mainly in magnitude. For the closest spacing, however, the dynamics is considerably different, which we suspect to be a consequence of jet entrainment. Proper orthogonal decomposition reveals, for the first time, that the collinearly aligned jet tends to excite a progressively broader range of vortex modes as the jet–vortex spacing is reduced. A close examination of the vortex mean flow seems to preclude linear vortex instabilities, while the vortex characteristics hint toward some form of receptivity mechanism to disturbances being located in the free stream. Our analyses are useful to validate simulation tools on configurations combining simultaneous lift and thrust effects.

Exploring global attention mechanism on fault detection and diagnosis for complex engineering processes

Considering about slow drift and complicated relationships among process variables caused by corrosion, fatigue, and so on in complex chemical engineering processes, an Industrial Process Optimization ViT (IPO-ViT) method was proposed to explore the global receptive field provided by self-attention mechanism of Vision Transformer (ViT) on fault detection and diagnosis (FDD). The applications on data sampled from both a real industrial process and the Tennessee Eastman (TE) process showed superior performance of the global attention-based method (IPO-ViT) over other typical local receptive fields deep learning methods without increasing sample and computation requirements. Moreover, results on six different variants in combing local, shallow filtering and global receptive field mechanisms unravel that the local attention explosion, the information alignment, and the expression capability are three major challenges for further improving on industrial applications of complex deep learning network structures.

ECSS: High-Embedding-Capacity Audio Watermarking with Diversity Reception.

Digital audio watermarking is a promising technology for copyright protection, yet its low embedding capacity remains a challenge for widespread applications. In this paper, the spread-spectrum watermarking algorithm is viewed as a communication channel, and the embedding capacity is analyzed and modeled with information theory. Following this embedding capacity model, we propose the extended-codebook spread-spectrum (ECSS) watermarking algorithm to heighten the embedding capacity. In addition, the diversity reception (DR) mechanism is adopted to optimize the proposed algorithm to obtain both high embedding capacity and strong robustness while the imperceptibility is guaranteed. We experimentally verify the effectiveness of the ECSS algorithm and the DR mechanism, evaluate the performance of the proposed algorithm against common signal processing attacks, and compare the performance with existing high-capacity algorithms. The experiments demonstrate that the proposed algorithm achieves a high embedding capacity with applicable imperceptibility and robustness.

LES of the T106 low-pressure turbine: Spectral proper orthogonal decomposition of the flow based on a fluctuating energy norm

This paper investigates the use of the spectral proper orthogonal decomposition (SPOD) on the flow around the T106 low-pressure turbine cascade. The chosen metric of the SPOD is based on the hydrodynamic flow disturbances for compressible flows and is used to characterize the flow structures holding large energy disturbances and synchronization processes with incoming wakes when considered. The input data for the SPOD is provided by large-eddy simulations of the T106 cascade. The Reynolds number and free-stream turbulence effects on the flow structures are studied using four operating points investigated in previous experiments and numerical simulations: Reynolds numbers of Re = 5.18 × 104 and Re = 1.48 × 105 without and with upstream wakes. The analysis of the SPOD indicates that the upstream wakes can amplify some modes of the suction side boundary layer (apparently a receptivity mechanism) and intensify the developing blade wake turbulent structures downstream of the trailing edge. This amplification happens over a reduced frequency bandwidth between Strouhal numbers equal to 7–10 for the low Reynolds number case and 20–24 for the high Reynolds number case.

The Art of Storytelling in the Digital Age: A Multimodal Perspective

Using Dan Brown's Wild Symphony, Craig Silvey's The Amber Amulet, and Jon McGregor's In Winter the Sky as its case studies, this article attempts to explore a number of mechanisms and strategies contributing to the multimodal fiction construction and posing challenges for modern readers of all ages. The article proposes to examine multimodal resonance as a cognitive mechanism enhancing the emotional impact of multimodal stories on recipients and triggering the receptive mechanism of narrative empathy. Various semiotic resources, both free resources, such as photos, maps, and illustrations, and bound ones, including font types and typographical experiments, are analyzed from the standpoint of their role in fictional world creation. The article makes an original contribution to the Multimodal Stylistics Studies by hypothesizing the relevance of identifying two distinctive mechanisms of foregrounding: visual foregrounding as a range of formal ways to construct a multimodal text that focuses the reader's attention with the help of free semiotic resources, and graphic foregrounding, which has bound semiotic resources at its heart. The findings of the research prove that it is the combination of elements of stylistic, cognitive and linguo-semiotic analyses that might provide a new and effective methodology for interpreting a multimodal literary text. The overall outcome testifies to the importance of further research into varied mechanisms of foregrounding as a complex phenomenon essential for our better understanding of the embodied character of reading.

Comparison and Functional Analysis of Odorant-Binding Proteins and Chemosensory Proteins in Two Closely Related Thrips Species, Frankliniella occidentalis and Frankliniella intonsa (Thysanoptera: Thripidae) Based on Antennal Transcriptome Analysis.

Two closely related thrips species, Frankliniella occidentalis and Frankliniella intonsa, are important pests on agricultural and horticultural crops. They have several similarities, including occurrence patterns, host range, and aggregation pheromone compounds. However, there are very few reports about the chemosensory genes and olfactory mechanisms in these two species. To expand our knowledge of the thrips chemosensory system, we conducted antennal transcriptome analysis of two thrips species, and identified seven odorant-binding proteins (OBPs) and eight chemosensory proteins (CSPs) in F. occidentalis, as well as six OBPs and six CSPs in F. intonsa. OBPs and CSPs showed high sequence identity between the two thrips species. The RT-qPCR results showed that the orthologous genes FoccOBP1/3/4/5/6, FintOBP1/3/4/6, FoccCSP1/2/3, and FintCSP1/2 were highly expressed in male adults. Molecular docking results suggested that orthologous pairs FoccOBP4/FintOBP4, FoccOBP6/FintOBP6, and FoccCSP2/FintCSP2 might be involved in transporting the major aggregation pheromone compound neryl (S)-2-methylbutanoate, while orthologous pairs FoccOBP6/FintOBP6, FoccCSP2/FintCSP2, and FoccCSP3/FintCSP3 might be involved in transporting the minor aggregation pheromone compound (R)-lavandulyl acetate. These results will provide a fundamental basis for understanding the molecular mechanisms of pheromone reception in the two thrips species.

Hypersonic Boundary-Layer Receptivity over Circular Cones with Ellipsoidal/Spherical Noses

The hypersonic boundary-layer receptivity to planar and axisymmetric freestream slow acoustic waves is investigated for a Mach 6 flow over a 5 deg half-angle circular cone with three different ellipsoidal/spherical noses. To fully characterize the boundary-layer response, a wide frequency range of the first and second instability modes is considered. The results show that the receptivity mechanisms for both instability modes are similar to those for a previously investigated sphere-nosed cone. Furthermore, the variation of the receptivity coefficient with the frequency is obtained. For the second mode, the nose effect on the receptivity coefficient is dependent on the forcing frequency; whereas for the first mode, the receptivity coefficient monotonously decreases with increasing bluntness. An empirical similarity parameter is identified to collapse the receptivity coefficient of the first mode for the cones investigated. Considering that the receptivity coefficient of the first mode is nearly two orders of magnitude higher than that of the second mode, the traditional method, which ignores receptivity, may underestimate the role of the first mode in causing transition.

Single Cell in a Gravity Field.

The exploration of deep space or other bodies of the solar system, associated with a long stay in microgravity or altered gravity, requires the development of fundamentally new methods of protecting the human body. Most of the negative changes in micro- or hypergravity occur at the cellular level; however, the mechanism of reception of the altered gravity and transduction of this signal, leading to the formation of an adaptive pattern of the cell, is still poorly understood. At the same time, most of the negative changes that occur in early embryos when the force of gravity changes almost disappear by the time the new organism is born. This review is devoted to the responses of early embryos and stem cells, as well as terminally differentiated germ cells, to changes in gravity. An attempt was made to generalize the data presented in the literature and propose a possible unified mechanism for the reception by a single cell of an increase and decrease in gravity based on various deformations of the cortical cytoskeleton.