bluuebunny/crossref_metadata_2025 huggingface dataset:
Entangled states in supersymmetric quantum mechanics
Authors: Laba H. P. , Tkachuk V. M.
Published: September 2020

We study entanglement of spin degrees of freedom with continuous one in supersymmetric (SUSY) quantum mechanics. Concurrence is determined by mean value of spin and is calculated explicitly for SUSY states. We show that eigenstates of supercharges are maximally entangled. As an example the entanglement of atom state with photon state and SUSY in Jaynes–Cummings model are considered.
Asymmetric tri-bi-maximal mixing and residual symmetries
Authors: Chuliá Salvador Centelles , Trautner Andreas
Published: September 2020

Asymmetric tri-bi-maximal mixing is a recently proposed, grand unified theory (GUT) based, flavor mixing scheme. In it, the charged lepton mixing is fixed by the GUT connection to down-type quarks and a [Formula: see text] flavor symmetry, while neutrino mixing is assumed to be tri-bi-maximal (TBM) with one additional free phase. Here we show that this additional free phase can be fixed by the residual flavor and CP symmetries of the effective neutrino mass matrix. We discuss how those residual symmetries can be unified with [Formula: see text] and identify the smallest possible unified flavor symmetries, namely [Formula: see text] and [Formula: see text]. Sharp predictions are obtained for lepton mixing angles, CP violating phases and neutrinoless double beta decay.
Influence of initial distance and heating rate on the aggregation of Cu and Au nanoparticles: a MD study
Authors: Tian Sen , Dai Xuanyan , Li Maoxiang , Zhang Linxing , Chen Jie
Published: September 2020

This paper investigates the effects of interparticle distance and heating rate on the aggregation characteristics of Cu/Au nanoparticles using molecular dynamics (MD) simulations, and focuses on discussing the effects of the two above-mentioned factors on the entire system. Our results suggested that the reduction in heating rate and increasing the initial distance of the particles would both contribute to raising the initial sintering temperature. However, when the particles’ initial distance was greater than the cut-off radius of the system, the initial sintering temperature was not increased any longer, but fluctuated within a certain range. Furthermore, the sintering force of the nanoparticles at the initial sintering temperature was investigated, and it was found that the heating rate made no obvious difference to it. Nonetheless, the sintering force varied under different initial distance of the particles (at the same heating rate) due to system energy changes.
Molecular dynamics simulations of the alloying process of Cu/Au nanoparticles with different sizes
Authors: Cao Shouqi , Zuo Haochen , Xin He , Zhou Lixin
Published: September 2020

The coalescence of particles extensively exists in the industrial production and nature, which is of great research significance. This paper examined the alloying process of Cu/Au nanoparticles with different sizes by molecular dynamics (MDs) simulations. The coalescence process presents three stages which can be divided by the contact and fusion. The alloying processes of Cu/Au nanoparticles with different sizes had contacted with each other before the heating at 300 K. The Au atoms diffused through the outer area of the sintering neck before the nanoparticles were fused into one particle. The coalescence had become severe after the systems reached the melting temperature. The different systems showed different sintering rate.
Weak directed transport of inertial Lévy flights in rough corrugated potential
Authors: Liu Jian , Zhu Ping , Li Feifei
Published: September 2020

The directed transport of inertial Lévy flights resulting from the superimposed roughness in a corrugated potential is investigated in this paper. The influence of the roughness on the transport is studied by calculating the mean velocity (MV) and the mean first escape time (MFET), with respect to the Lévy index [Formula: see text] and the asymmetry parameter [Formula: see text] which determines the asymmetry of the potential. The results indicate that the particles’ directed transport caused by the asymmetry of the potential will be counteracted by the roughness, which behaves as the absolute value of the MV decreases with roughness [Formula: see text] increasing, and the MFET increases with [Formula: see text] increasing, correspondingly. Though smaller Lévy index [Formula: see text] can produce more large jumps, which yield the enhancement of the directed transport, since the roughness superimposed on the corrugated potential supplies the hinder effect, the directed transport is also weakened after the appearance of the roughness.
Generation of the high-intensity single harmonic energy peak and attosecond pulse by using resonance ionization schemes from atoms and molecules
Authors: Jing Xiaodan , Feng Liqiang , Liu Li , Mccain John , Li Yi
Published: September 2020

The lower harmonic intensity is still the reason that limits the application of attosecond pulse. Thus, in this paper, on the basis of resonance ionization schemes, we propose the effective methods to improve the harmonic intensity of atomic and molecular systems. For atomic system (i.e. He atom), with the combination of chirped-UV pulse, not only the harmonic cutoff can be extended, but also the harmonic intensity can be enhanced, caused by the UV resonance ionization between ground state and excited state. As a result, the single harmonic energy peak (HEP) with the higher intensity and higher emitted photon energy can be obtained, which can support the attosecond pulses shorter than 40 as. For the molecular system (i.e. [Formula: see text] and [Formula: see text]), by properly choosing the pulse duration of the fundamental pulse, the time region of charge resonance enhanced ionization (CREI) can be well controlled. Therefore, the maximum HEP with the higher intensity can be obtained. Second, by properly adding a half-cycle unipolar pulse, the selected maximum HEP in the CREI region can be further extended. Thus, an intense and broad spectral region can be produced, which can generate the attosecond pulses with durations of 36[Formula: see text]as.
QUANTITATIVE EVALUATION METHOD FOR TIBIOFIBULAR JOINT ALIGNMENT IN ANKLE OSTEOARTHRITIS BASED ON 3D BONE SIZE
Authors: Fujinuma Takuya , Takemura Hiroshi , Kosugi Shinichi , Kurokawa Hiroaki , Tanaka Yasuhito , Tsuichihara Satoki
Published: September 2020

Purpose: A remedy for ankle osteoarthritis is artificial joint replacement surgery. By estimating the relative positional difference (alignment) between the bone before and after deformation, precise artificial joint replacement surgery can be performed. By using the estimated alignment, an artificial ankle joint can ensure high satisfaction with less pain and can perform necessary functions. Although bone alignment is currently estimated from X-rays and computed tomography (CT) images, it is difficult to measure three-dimensional (3D) data from two-dimensional (2D) images. Although 3D data can be estimated using a 2D–3D registration method, it requires capturing the bone images multiple times and imposing considerable burden on the patient. In this paper, we propose a method to estimate the 3D bone alignment based on the size of the bone using principal component analysis (PCA), which requires scanning only one data. Method: In the proposed method, PCA is used to create a 3D bone model based on the bone thickness, and the bone alignment is estimated by the Go-ICP algorithm. In this study, the images of the foot were captured using a CT device, and the 3D bone model was created by stacking CT images. For improving the accuracy of the alignment, a reference model based on the bone thickness was created using PCA. Subsequently, the bone was overlapped and the alignment was estimated. Result: For the evaluation of the accuracy of alignment in the proposed method, three types of methods were used to create a bone model. The proposed method was found to be the most accurate with respect to the true value in five of the six evaluation criteria. In addition, the alignment of the tibiofibular joint was evaluated using the proposed method. Regarding the displacement in the [Formula: see text]-axis direction, there were significant differences in both Stage 3B and Stage 4 compared with the healthy subjects. In addition, the magnitude of rotation in the [Formula: see text]-axis direction showed a significant difference in stage 3B as compared with a healthy subject. Conclusion: Using the proposed method, we have shown that bone alignment can be estimated three-dimensionally by scanning the bone data once only. In addition, by comparing with the reference model using PCA based on the thickness of the bone, the accuracy of alignment is improved as compared with the reference model, which is not based on the bone thickness.
Discussion of “What Turns the Taxman On? Tax Aggressiveness, Financial Statement Audits, and Tax Return Adjustments in Small Private Companies”
Authors: Radhakrishnan Suresh , Janakiraman Surya
Published: September 2020

In this discussion of [Ojala, H., Kinnunen, J., Niemi. L, Troberg, P. and Collis, J. (2019). What turns the taxman on? Tax aggressiveness, financial statement audits and tax return adjustments in small private companies. Forthcoming, The International Journal of Accounting], we analytically show that tax evasion can be sustained in equilibrium in a rational expectations setting, and the analytical model to provide interesting future research directions. In addition, we also provide interesting future research directions using the proprietary database by closely examining the authors’ results.
Target Orientation of Addressing Climate Change During the Period of the 14th Five-Year Plan
Authors: PAN Jiahua
Published: September 2020

Emission reduction is the focus of and difficulty in addressing climate change. In choosing emission reduction targets, China needs to examine the historical trajectory of carbon emissions in developed countries and learn from their target orientations. During the evolution of the world development pattern, the status of China changed fundamentally. The goals of the 14th Five-Year Plan to address climate change should not only be pragmatic but also demonstrate moral responsibility, and should not only achieve international leadership but also achieve domestic reverse actuation. The goals of the 14th Five-Year Plan do not need to exclude reaching the peak of carbon dioxide emissions. China has advantages in the goals of the speed and scale of renewable energy development. Although the goal of net-zero carbon is impossible to achieve in the whole country, it can be tried in some regions first. On the side of demand, the target orientation of pure electric vehicle has leading value. The indicators of climate resilience, especially resilient carbon reduction and ecological carbon sequestration, etc., are also the goals of ecological civilization transformation and development.
Russia–China Economic Relations in the 21st Century: Unrealized Potential or Predetermined Outcome?
Authors: Larin Viktor
Published: September 2020

In the first decade of the 21st century, Moscow and Beijing made two strategic decisions to expand and deepen bilateral economic relations. The first one was to endorse diversified energy partnership. The second was centered on cross-border area and has been offered in the program of regional cooperation between Russian and Chinese border regions. However, basic methodological illogicality between estimations and expectations in Russia–China economic relations has smashed the good intentions of both sides. Recommendations for the governments to develop economic relations were theoretically correct, but mostly generalized and abstract in nature. Subsequently, these relations had not found a stable ground and were undermined by numerous internal and outside factors, positive and negative. A narrow range of trade articles made Russian–Chinese exchange dependent on the demand and prices for these goods, and small mutual investments slightly influenced an economic exchange between two countries. In spite of a number of decisions related to cross-border and inter-regional relations accepted at the top level, these relations are still the weakest link in bilateral ties. Mutual investments and modern forms of economic cooperation did not flourish along the border also. Moreover, economic troubles in Russia of 2014–2016 have hampered the cross-border relations seriously, while Heilongjiang Province being the intermediary between many Chinese territories and Russia has become the biggest loser on the Chinese side. In spite of all problems in economic cooperation between Russia and China, today, China is the no. 1 trade partner of Russia and Russia is the no. 1 supplier of oil to China. Their energy alliance has strengthened both countries’ statuses in their economic interaction: the position of raw material supplier for Russia and the exporter of manufactured goods to Russia for the People’s Republic of China (PRC). Western sanctions amplified the Chinese high-tech goods export to Russia; China’s share in Pacific Russia’s foreign trade increased from 29.2% in 2014 to 33.4% in 2017 and the peoples’ mood in this region moved in favor of China. However, by the end of second decade of the 21st century, Russia’s and China’s favorable “economic complementarities” and geographic proximity happened to remain a virtual product of academic’s intellectual exercises and have not transformed into the genuine economic cooperation. This is because, on the one hand, the philosophy, political and cultural infrastructures of Russia–China economic relations did not change much since 1990s, and, on the other hand, of some domestic and international factors that prevented this transformation.
From Appearance to Essence
Authors: Fang Xiu Susie , Sheng Quan Z. , Wang Xianzhi , Zhang Wei Emma , Ngu Anne H. H. , Yang Jian
Published: September 2020

Truth discovery has been widely studied in recent years as a fundamental means for resolving the conflicts in multi-source data. Although many truth discovery methods have been proposed based on different considerations and intuitions, investigations show that no single method consistently outperforms the others. To select the right truth discovery method for a specific application scenario, it becomes essential to evaluate and compare the performance of different methods. A drawback of current research efforts is that they commonly assume the availability of certain ground truth for the evaluation of methods. However, the ground truth may be very limited or even impossible to obtain, rendering the evaluation biased. In this article, we present
CompTruthHyp
, a generic approach for comparing the performance of truth discovery methods without using ground truth. In particular, our approach calculates the probability of observations in a dataset based on the output of different methods. The probability is then ranked to reflect the performance of these methods. We review and compare 12 representative truth discovery methods and consider both single-valued and multi-valued objects. The empirical studies on both real-world and synthetic datasets demonstrate the effectiveness of our approach for comparing truth discovery methods.
Learning Unsupervised Knowledge-Enhanced Representations to Reduce the Semantic Gap in Information Retrieval
Authors: Agosti Maristella , Marchesin Stefano , Silvello Gianmaria
Published: September 2020

The semantic mismatch between query and document terms—i.e., the semantic gap—is a long-standing problem in Information Retrieval (IR). Two main linguistic features related to the semantic gap that can be exploited to improve retrieval are synonymy and polysemy. Recent works integrate knowledge from curated external resources into the learning process of neural language models to reduce the effect of the semantic gap. However, these knowledge-enhanced language models have been used in IR mostly for re-ranking and not directly for document retrieval.

We propose the Semantic-Aware Neural Framework for IR (SAFIR), an unsupervised knowledge-enhanced neural framework explicitly tailored for IR. SAFIR jointly learns word, concept, and document representations from scratch. The learned representations encode both polysemy and synonymy to address the semantic gap. SAFIR can be employed in any domain where external knowledge resources are available. We investigate its application in the medical domain where the semantic gap is prominent and there are many specialized and manually curated knowledge resources. The evaluation on shared test collections for medical literature retrieval shows the effectiveness of SAFIR in terms of retrieving and ranking relevant documents most affected by the semantic gap.
Wheat Grain Yield Estimation Based on Image Morphological Properties and Wheat Biomass
Authors: Korohou Tchalla , Okinda Cedric , Li Haikang , Cao Yifei , Nyalala Innocent , Huo Lianfei , Potcho Mouloumdèma , Li Xiang , Ding Qishuo
Published: September 2020

The estimation of wheat grain yield based on a composite of morphological features and mass of wheat organs was introduced in this study. The morphological features (length, width, and perimeter for the wheat stem and ear) were extracted by a computer vision system whose performance was evaluated by correlating the measured and estimated perimeter and length of the wheat stem at an R2 of 0.9609 and 0.9779, respectively. Six regression models were developed based on the extracted features. The linear regression based on the wet weight of the stem, the ear, and the leaves outperformed all the other statistical models explored with an R2 of 0.9893 and an RMSE of 0.0684 mm in estimating the dry grain yield with wet wheat organ mass as the predictors. This proposed system can be applied as nondestructive in a field technique for wheat phenotyping. Additionally, it can be applied to other similar crops.
Multifocal Medulloblastoma in an Adult Patient: Description of a Rare Presentation and Review of the Literature
Authors: Troncon Irene , Guerriero Angela , Rossi Sabrina , Ronzon Monica , Padovan Marta , Mario Caccese , Zanatta Lucia , Toffolatti Luisa , Marton Elisabetta , Lombardi Giuseppe , Dei Tos Angelo Paolo , Canova Giuseppe
Published: September 2020

Medulloblastoma is an embryonal neuroepithelial tumor that affects mainly childhood and more rarely adults. Medulloblastoma occurring as multiple nodules at diagnosis is a rare and tricky presentation. Here, we describe the case of a previously healthy 47-year-old woman with multiple posterior fossa cerebellar tumors. Histological, immunohistochemical, and molecular analyses were performed to best characterize the two excised lesions. The histopathological analysis revealed different variants of medulloblastoma in the excised nodules, one being extensive nodularity, rare in adults, and the other desmoplastic/nodular with areas of anaplasia. Immunostains and molecular analysis classified both nodules as SHH medulloblastoma. Adult medulloblastoma is extremely rare. Important differences exist between adult medulloblastoma and medulloblastoma arising in children and infants. Such differences are in location, distribution of histological variants and of molecular subgroups, survival rates, and therapeutic options. An extensive morphological and molecular characterization of such rare tumors is necessary to choice the best-tailored therapy.
Effectiveness of the Laser Application in Temporomandibular Joint Disorder: A Systematic Review of 1172 Patients
Authors: Zwiri Abdalwhab , Alrawashdeh Manal Ahmad , Khan Mohammad , Ahmad Wan Muhamad Amir W. , Kassim Nur Karyatee , Ahmed Asif Jawaad , Suan Phaik Khoo , Husein Adam , Ab-Ghani Zuryati
Published: September 2020

Objective. The aim of this systematic review was to evaluate the effectiveness of laser application in temporomandibular joint disorder. Methods. PubMed, SCOPUS, Science Direct, Web of Science, and Google Scholar electronic databases were searched systematically with restricting the languages to only English and year (January 2001 to March 2020), and studies were selected based on the inclusion criteria. Study quality and publication bias were assessed by using the Robvis, a software package of R statistical software. Results. This systematic review included 32 studies (1172 patients) based on the inclusion and exclusion criteria. Most of the studies reported significant reduction of pain by the use of the laser during TMD treatment. Two-thirds of the study (78.13%) found a better outcome comparing with conventional one. According to Robvis, 84.4% of the studies were high methodological studies with low risk of bias. Conclusion. TMD patients suffer with continuous pain for long time even after conventional treatment. Laser therapy shows a promising outcome of pain reduction for TMD patients. Therefore, laser therapy can be recommended for the TMD patients’ better outcome. This trial is registered with PROSPERO (CRD42020177562).
Nanoparticulate Antibiotic Systems as Antibacterial Agents and Antibiotic Delivery Platforms to Fight Infections
Authors: Vassallo Antonio , Silletti Maria Francesca , Faraone Immacolata , Milella Luigi
Published: September 2020

Today’s human society, product of decades of progress in all fields of knowledge, would have been unimaginable without the discovery of antibiotics and more generally of antimicrobials. However, from the beginning, the scientific community was aware that microorganisms through various strategies were able to hinder and render vain antibiotic action. Common examples are the phenomena of persistence, tolerance, and resistance, up to the creation of the feared bacterial biofilms. Antibiotics are a precious but equally labile resource that must be preserved but at the same time reinforced to safeguard their effectiveness. Nanoparticulate systems such as nanobactericides, with their inherent antibacterial activity, and nanocarriers, which operate as drug delivery systems for conventional antibiotics, are innovative therapies made available by nanotechnology. Inorganic nanoparticles are effective both as nanobactericides (AgNPs, ZnONPs, and TiO2NPs) and as nanocarriers (AgNPs, AuNPs, ZnONPs, and TiO2NPs) against sensitive and multi-drug-resistant bacterial strains. Liposomes are among the most studied and flexible antibiotic delivery platforms: conventional liposomes allow passive targeting at the mononuclear phagocytic system (MPS); “stealth” liposomes prevent macrophage uptake so as to eradicate infections in tissues and organs outside MPS; thanks to their positive charge, cationic liposomes interact preferentially with bacterial and biofilm surfaces, acting as innate antibacterials as well as drug delivery systems (DDS); fusogenic liposomes have fluid bilayers that promote fusion with microbial membranes; and finally, ligand-targeted liposomes provide active targeting at infection sites. Dendrimers are among the most recent and attractive nanoparticulate systems, thanks to their multibranched nanoarchitecture, which equipped them with multiple active sites for loading antibiotics and also interacting with bacteria. Finally, nanoantibiotics represent a new hopeful generation of antibiotic candidates capable of increasing or even restoring the clinical efficacy of “old” antibiotics rendered useless by the resistance phenomena.
Prediction of Continuous Rain Disaster in Henan Province Based on Markov Model
Authors: Zhu Xiaoxiao , Zhang Shuhua , Li Bingjun
Published: September 2020

Continuous rain disasters occur frequently, which seriously affect maize yield. However, the research on predicting continuous rain disasters is very limited. Taking the maize in Henan Province as an example, the Markov model is used to predict the occurrence of continuous rain in the middle growth and late growth stages (flowering and filling stages) of 13 cities in Henan Province. The results showed that the maize in Henan Province would suffer from continuous rain disaster in 2020 and 2021. Finally, combined with the prediction results, policy recommendations for maize growth in Henan Province are proposed to ensure stable and high yield of maize.
Characterisation of Bacteriocins Produced by Lactobacillus spp. Isolated from the Traditional Pakistani Yoghurt and Their Antimicrobial Activity against Common Foodborne Pathogens
Authors: Hassan Mahreen Ul , Nayab Hina , Rehman Tayyab Ur , Williamson Mike P. , Haq Khayam Ul , Shafi Nuzhat , Shafique Farheen
Published: September 2020

Lactic acid bacteria (LAB) are widely known for their probiotic activities for centuries. These bacteria synthesise some secretory proteinaceous toxins, bacteriocins, which help destroy similar or interrelated bacterial strains. This study was aimed at characterising bacteriocins extracted from Lactobacillus spp. found in yoghurt and assessing their bactericidal effect on foodborne bacteria. Twelve isolated Lactobacillus spp. were examined to produce bacteriocins by the organic solvent extraction method. Bacteriocins produced by two of these strains, Lactobacillus helveticus (BLh) and Lactobacillus plantarum (BLp), showed the most significant antimicrobial activity, especially against Staphylococcus aureus and Acinetobacter baumannii. Analysis of SDS‐PAGE showed that L. plantarum and L. helveticus bacteriocins have a molecular weight of ~10 kDa and ~15 kDa, respectively. L. plantarum (BLp) bacteriocin was heat stable while L. helveticus (BLh) bacteriocin was heat labile. Both bacteriocins have shown activity at acidic pH. Exposure to a UV light enhances the activity of the BLh; however, it had negligible effects on the BLp. Different proteolytic enzymes confirmed the proteinaceous nature of both the bacteriocins. From this study, it was concluded that bacteriocin extracts from L. helveticus (BLh) can be considered a preferable candidate against foodborne pathogens as compared to L. plantarum (BLp). These partially purified bacteriocins should be further processed to attain purified product that could be useful for food spoilage and preservation purposes.
Investigating the Failure Mechanism of Jointed Rock Slopes Based on Discrete Element Method
Authors: Peng Chao , Guo Qifeng , Yan Zhenxiong , Wang Minglong , Pan Jiliang
Published: September 2020

This paper presents a comprehensive engineering method to investigate the failure mechanism of the jointed rock slopes. The field geology survey is first carried out to obtain the slope joint data. A joint network model considering the structural complexity of rock mass is generated in the PFC software. The synthetic rock mass (SRM) approach for simulating the mechanical behavior of jointed rock mass is employed, in which the flat‐jointed bonded‐particle model (FJM) and smooth joint contact model (SJM) represent intact rock and joints, respectively. Subsequently, the effect of microparameters on macromechanical properties of rock is investigated for parameter calibration. Moreover, the scale effect is analyzed by multiscale numerical tests, and the representative elementary volume (REV) size in the selected research area is found as 16 m × 16  m × 16 m. The microparameters of the SRM model are calibrated to match the mechanical properties of the engineering rock mass. Finally, an engineering case from Shuichang open‐pit mine is analyzed and the failure process of the slope during the excavation process from micro‐ to macroscale is obtained. It has been found that failure occurs at the bottom of the slope and gradually develops upwards. The overall failure of the slope is dominated by the shallow local tension fracture and wedge failure.
Land Cover Classification Using SegNet with Slope, Aspect, and Multidirectional Shaded Relief Images Derived from Digital Surface Model
Authors: Lee Dae Geon , Shin Young Ha , Lee Dong-Cheon
Published: September 2020

Most object detection, recognition, and classification are performed using optical imagery. Images are unable to fully represent the real-world due to the limited range of the visible light spectrum reflected light from the surfaces of the objects. In this regard, physical and geometrical information from other data sources would compensate for the limitation of the optical imagery and bring a synergistic effect for training deep learning (DL) models. In this paper, we propose to classify terrain features using convolutional neural network (CNN) based SegNet model by utilizing 3D geospatial data including infrared (IR) orthoimages, digital surface model (DSM), and derived information. The slope, aspect, and shaded relief images (SRIs) were derived from the DSM and were used as training data for the DL model. The experiments were carried out using the Vaihingen and Potsdam dataset provided by the German Society for Photogrammetry, Remote Sensing and Geoinformation (DGPF) through the International Society for Photogrammetry and Remote Sensing (ISPRS). The dataset includes IR orthoimages, DSM, airborne LiDAR data, and label data. The motivation of utilizing 3D data and derived information for training the DL model is that real-world objects are 3D features. The experimental results demonstrate that the proposed approach of utilizing and integrating various informative feature data could improve the performance of the DL for semantic segmentation. In particular, the accuracy of building classification is higher compared with other natural objects because derived information could provide geometric characteristics. Intersection-of-union (IoU) of the buildings for the test data and the new unseen data with combining all derived data were 84.90% and 52.45%, respectively.
Vibration Power Flow of an Infinite Cylindrical Shell Submerged in Viscous Fluids
Authors: Chen Haosen , Yang Peng , Shen Yijun
Published: September 2020

In the previous investigations of the vibroacoustic characteristics of a submerged cylindrical shell in a flow field, the fluid viscosity was usually ignored. In this paper, the effect of fluid viscosity on the characteristics of vibration power flow in an infinite circular cylindrical shell immersed in a viscous acoustic medium is studied. Flügge’s thin shell theory for an isotropic, elastic, and thin cylindrical shell is employed to obtain the motion equations of the structure under circumferential-distributed line force. Together with the wave equations for the viscous flow field as well as continuity conditions at the interface, the vibroacoustic equation of motion in the coupled system is derived. Numerical analysis based on the additional-damping numerical integral method and ten-point Gaussian integral method is conducted to solve the vibroacoustic coupling equation with varying levels of viscosity. Then, the variation of the input power flow against the nondimensional axial wave number in the coupled system with different circumferential mode numbers is discussed in detail. It is found that the influence of fluid viscosity on the vibroacoustic coupled system is mainly concentrated in the low-frequency band, which is shown as the increase of the crest number and amplitude of the input power flow curves.
Supply Chain Financial Risk Evaluation of Small- and Medium-Sized Enterprises under Smart City
Authors: Wang Keyu , Yan Fuhai , Zhang Yangjingjing , Xiao Yunlong , Gu Lexi
Published: September 2020

Prevention and control of risks are an eternal theme of financial institutions. Although, to some extent, the emergence of supply chain finance can enhance the financing capacity of small- and medium-sized enterprises (SMEs) and reduce financial risks of financial institutions, with the development of smart city and smart finance, the financial risks of SMEs are more complex, infectious, dormant, and difficult to accurately identify and measure. Facing this status, financial institutions have been required to understand and evaluate the financial risks of SMEs from a new perspective. Therefore, this paper, based on the study of financial risks assessment of SMEs under the smart city and smart finance, innovatively constructs a new index evaluation system for supply chain finance, based on improved hesitant fuzzy linguistic PROMETHEE method, and the effectiveness and advantages of the model have been verified through an example. To a certain degree, the SMEs financing the evaluation model and improved PROMETHEE method can not only help financial institutions reduce the risks in the specific financial transactions but also reduce the survival threat of financial institutions. Moreover, it is of positive significance to the stable operation of the financial system.
Experimental Study on Shock Wave Propagation of the Explosion in a Pipe with Holes by High-Speed Schlieren Method
Authors: Zhang Gang
Published: September 2020

The shock wave propagation of the explosion in a pipe with holes was studied by a high-speed schlieren experimental system. In the experiments, schlieren images in the explosion were recorded by a high-speed camera from parallel and perpendicular orientations, respectively, and the pressure in the air was measured by an overpressure test system. In parallel orientation, it is observed that the steel pipe blocks the propagation of blast gases, but it allows the propagation of shock waves with a symmetrical shape. In perpendicular orientation, oblique shock wave fronts were observed, indicating the propagation of explosion detonation along the charge. Shock wave velocity in the hole direction is larger than that in the nonhole direction, indicating the function of holes in controlling blast energy, that is, leading blast energy to hole direction. Furthermore, the function of holes is verified by overpressure measurements in which peak overpressure in the hole direction is 0.87 KPa, 2.8 times larger than that in the nonhole direction. Finally, the variation of pressure around the explosion in a pipe with holes was analyzed by numerical simulation, qualitatively agreeing with high-speed schlieren experiments.
Identification of Molecular Signatures in Neural Differentiation and Neurological Diseases Using Digital Color-Coded Molecular Barcoding
Authors: Salerno Debora , Rosa Alessandro
Published: September 2020

Human pluripotent stem cells (PSCs), including embryonic stem cells and induced pluripotent stem cells, represent powerful tools for disease modeling and for therapeutic applications. PSCs are particularly useful for the study of development and diseases of the nervous system. However, generating in vitro models that recapitulate the architecture and the full variety of subtypes of cells that make the complexity of our brain remains a challenge. In order to fully exploit the potential of PSCs, advanced methods that facilitate the identification of molecular signatures in neural differentiation and neurological diseases are highly demanded. Here, we review the literature on the development and application of digital color-coded molecular barcoding as a potential tool for standardizing PSC research and applications in neuroscience. We will also describe relevant examples of the use of this technique for the characterization of the heterogeneous composition of the brain tumor glioblastoma multiforme.
Research on the Influence of Slurry Filling on the Stability of Floor Coal Pillars during Mining above the Room-and-Pillar Goaf: A Case Study
Authors: Li Zhu , Feng Guorui , Cui Jiaqing
Published: September 2020

Room-and-pillar mining is a commonly used mining method in previous practice in northwest China mining area. Due to priority selection of high-quality resources, coal mines in northwest China generally have to face upward mining above goaf. Thus, the stability of a floor coal pillar influenced by mining activities plays an essential role in upward mining above goaf. The results indicated that a floor coal pillar kept stable before coal excavation in the no. 6107 working face in the Yuanbaowan coal mine; however, the plastic zone in the floor coal pillar expanded sharply and the elastic core zone reduced suddenly on the influence of abutment pressure. Finally, the floor coal pillar supported failure. Accordingly, the paper proposed a floor coal pillar reinforcing technique through a grout injection filling goaf area. As physically limited by a different-height filling body on the double sides, the plastic zone scope and horizontal displacement and loading capacity of the floor coal pillar were studied, working out that the critical height of the filling body should be about 6 m which can ensure safe mining when upward mining above goaf. Case practice indicated that the fractures induced by mining in the floor coal pillar, filling body, and floor can be restrained effectively when the filling body height is 6 m, which can ensure floor coal pillar stability and safe mining of the no. 6107 working face in the Yuanbaowan coal mine. The research can provide theoretical and technical guidance for upward mining above goaf and have a critical engineering practice value.
Tracing the Geographical Origins of Dendrobe (Dendrobium spp.) by Near-Infrared Spectroscopy Sensor Combined with Porphyrin and Chemometrics
Authors: Lv Chaogeng , He Yali , Kang Chuanzhi , Zhou Li , Wang Tielin , Yang Jian , Guo Lanping
Published: September 2020

Dendrobe (Dendrobium spp.) is a traditional medicinal and edible food, which is rich in nutrients and contains biologically active metabolites. The quality and price of dendrobe are related to its geographical origins, and high quality dendrobe is often imitated by low quality dendrobe in the market. In this work, near-infrared (NIR) spectroscopy sensor combined with porphyrin and chemometrics was used to distinguish 360 dendrobe samples from twelve different geographical origins. Partial least squares discriminant analysis (PLSDA) was used to study the sensing performance of traditional NIR and tera-(4-methoxyphenyl)-porphyrin (TMPP)-NIR on the identification of dendrobe origin. In the PLSDA model, the recognition rate of the training and prediction set of the TMPP-NIR could reach 100%, which was higher than the 91.85% and 91.34% of traditional NIR. And the accuracy, sensitivity, and specificity of the TMPP-NIR sensor are all 1.00. The mechanism of TMPP improving the specificity of NIR spectroscopy should be related to the π-π conjugated system and the methoxy groups of TMPP interact with the chemical components of dendrobe. This study reflected that NIR spectrum with TMPP sensor was an effective approach for identifying the geographic origin of dendrobe.
Imaginários de mulheres que sofreram perda gestacional
Authors: Visintin Carlos Del Negro , Inacarato Gisele Meirelles Fonseca , Aiello-Vaisberg Tânia Maria José
Published: September 2020

Inserido num conjunto maior de pesquisas sobre sofrimentos maternos, entendidos como socialmente determinados, este estudo objetiva investigar o imaginário coletivo de mulheres que sofreram perda gestacional, sobre esta ocorrência, na perspectiva da psicologia psicanalítica concreta. Justifica-se na medida em que pode lançar luz sobre uma situação relevante na clínica psicológica da maternidade, favorecendo a prática clínica em vertentes preventivas e interventivas. Organizada como pesquisa qualitativa com uso do método psicanalítico, esta investigação utilizou, como material, postagens em blogs brasileiros de 15 mulheres que relatam terem sofrido perda gestacional. A consideração psicanalítica dos escritos permitiu a produção interpretativa de dois campos de sentido afetivo-emocional: “É culpa da mãe” e “Vazio eterno”. O quadro geral indica mulheres que sofrem perda gestacional tendem a habitar imaginários coletivos de acordo com os quais seriam as únicas responsáveis pelo ocorrido, o que provoca sentimentos de culpa e de vazio existencial.
Intervenções psicanalíticas com famílias de crianças diagnosticadas com autismo
Authors: Almeida Maíra Lopes , Neves Anamaria Silva
Published: September 2020

Este trabalho discute a clínica com famílias de crianças diagnosticadas com Transtorno do Espectro Autista (TEA). A palavra “estranho”, recorrentemente usada para adjetivar essas crianças, propulsiona a discussão sobre o acolhimento do grupo familiar. Confrontados com esse “estranho” diariamente, o atendimento a famílias impõe questões à psicanálise. Neste trabalho, percorrem-se autores psicanalistas e apresentam-se evidências atuais sobre atendimentos psicanalíticos para crianças diagnosticadas com TEA e suas famílias. A psicanálise constitui dispositivo de escuta primordial para acolher o “estranho” e propicia novos significados e possibilidades de encontro entre os sujeitos enredados nesse dilema.
Notas sobre a história da adolescência
Authors: Moraes Bruna Rabello de , Weinmann Amadeu De Oliveira
Published: September 2020

Este artigo tem origem em debates atuais em torno da adolescência. Nesses debates, ele assume a premissa teórica de que a adolescência é uma construção cultural, isto é, de que uma noção de adolescência sempre é tributária do contexto que a define. A fim de escutar discursos sociais sobre esse tema, nos debruçamos sobre alguns estudos históricos acerca da adolescência, assim como sobre algumas produções culturais que participaram da formulação do que se entende por adolescência em cada tempo. A partir das transformações e repetições encontradas, definimos as seguintes categorias de análise, que nos parecem cruciais na compreensão do objeto de nosso estudo: adolescência e rituais de iniciação; marcas iniciais; juventude temida; metáfora da mudança social; subcultura adolescente. Por fim, sugerimos que a adolescência talvez seja, em nossas sociedades, uma dobradiça entre as angústias que conjuramos e a possibilidade de encontrar um destino simbólico para essas angústias.
A transferência na clínica psicanalítica de adolescentes
Authors: Andrade Luciana Carla Lopes de , Lang Charles Elias
Published: September 2020

No presente artigo, apresenta-se uma leitura sobre a transferência na clínica psicanalítica de adolescente a partir de Freud e Lacan. Na clínica escuta-se o que é ser adolescente e se depara com um longo trabalho deste jovem por uma elaboração da falta no Outro. A partir do conceito de transferência em Freud, como a resistência mais poderosa ao tratamento, e do conceito de transferência em Lacan, apresentando o conceito de Sujeito Suposto Saber, traz-se uma vinheta clínica para ilustrar e discutir a transferência na clínica psicanalítica de adolescente. Entende-se, portanto, que a transferência é uma ferramenta necessária e fundamental para trabalhar na clínica e, no tocante à clínica de adolescente, o papel do analista é construir novas referências simbólicas para que o jovem possa se sustentar fora da família e encarar o seu desejo.
Dolto, 30 anos depois
Authors: Mazzilli Roberta , Fonseca Fernanda Lima
Published: September 2020

Este artigo é uma leitura da obra da psicanalista francesa Françoise Dolto. Nosso objetivo é resgatar a atualidade de sua teoria e de sua prática clínica, particularmente no que tange à noção de “sujeito desejante”. Primeiramente, apresentamos um breve histórico dessa autora e de suas contribuições para a psicanálise e a sociedade. Em seguida, discutimos como Dolto compreendeu as primeiras experiências do bebê a partir do conceito de “imagem inconsciente do corpo”. E por fim, demonstramos como a aposta de que o sujeito se manifestaria precocemente por desejos através de seu corpo abriu a possibilidade de se realizar um trabalho efetivo com a primeira infância e fez dessa psicanalista uma referência.
“Trincheira de retaguarda”: uma entrevista com Iná Camargo Costa
Authors: Oliveira Aryanna Dos Santos , Arantes Daniel Essenine Takamatsu , Marchesan Guilherme Caliendo , Martiniuk Thiago Dos Santos , Palmeira Natasha Belfort
Published: September 2020

Referência obrigatória não apenas para os estudos literários, como também para o pensamento crítico atual, Iná Camargo Costa discorre, nesta entrevista, sobre temas diversos – formação universitária, prática docente, ensaios e livros, engajamento político e cultural –, mas principalmente sobre teatro.
De “Notas de crítica literária” a “Quatro esperas”: Antonio Candido leitor de narrativas ficcionais
Authors: Macedo André Barbosa
Published: September 2020

Contemplando parte de pesquisa mais abrangente sobre a recepção crítica de Graciliano Ramos e Guimarães Rosa desde a crítica de jornal, o objetivo do artigo é abordar questões de método quanto à leitura de prosa de ficção na crítica de Antonio Candido. O corpus é formado por escritos que vão de “Notas de crítica literária” (anos 1940) até “Quatro esperas” (1990). Nesse sentido, identificamos as sete principais referências de Candido para esse tipo de leitura e realizamos considerações sobre sua mentalidade juntiva.
Satã, o pacto e o sacrifício na literatura ocidental
Authors: Lopes Lucas Mateocci
Published: September 2020

O pacto demoníaco é um antigo tema da tradição ocidental, fortemente presente em sua literatura. Ele apresenta muitas variantes, mas associá-lo à discussão do sacrifício, como estudado por René Girard, pode ajudar a compreender alguns de seus aspectos presentes desde os Evangelhos até as obras da tradição fáustica. Alguns desses aspectos são o nível de realidade da existência do demônio, a perda da alma como sacrifício pelo pacto, o sacrifício de inocentes como parte do preço a ser pago e a relação do pacto, do sacrifício e da estruturação do poder social. Essas questões se colocam de modo particularmente complexo no Fausto de Goethe, em que podemos ver a trajetória do personagem como uma representação da razão no Ocidente e a aposta sobre sua alma como uma reflexão sobre seus destinos.
A representação da Inglaterra e da Escócia em The expedition of Humphry Clinker
Authors: Faria Carla Lento
Published: September 2020

Este artigo tem por objetivo analisar a representação da Inglaterra e da Escócia no romance The expedition of Humphry Clinker (1771), do escritor escocês Tobias Smollett. Escrito em forma epistolar, o romance narra as impressões de uma família galesa acerca das cidades que visita durante uma viagem pela Grã-Bretanha. Assim, as cartas do romance permitem conhecer a Inglaterra e a Escócia do século XVIII sob uma variedade de perspectivas. Apesar da união dos parlamentos da Escócia e da Inglaterra em 1707, a ideia de “britânico” no período em que o romance foi produzido estava muito atrelada à cultura e à língua inglesas, de modo que os escoceses eram vistos como inferiores aos ingleses. Sendo assim, cabe observar como, ao contrastar cidades da Inglaterra e da Escócia, Smollett pretende subverter os preconceitos e falsas concepções direcionados aos escoceses, tão comuns nos romances produzidos na Inglaterra, unificando a ideia de escocês àquela de britânico.
A crise do romance segundo os ensaios e o conto “An unwritten novel” de Virginia Woolf
Authors: Queiroz José Pereira de
Published: September 2020

Este artigo analisa o conto “An unwritten novel”, de Virginia Woolf, à luz da discussão proposta pela própria autora em diversos de seus ensaios acerca das dificuldades e das possibilidades encontradas por seus contemporâneos em relação à escrita de ficção. O que define o gênero romance, para a autora, é uma preocupação com a apreensão e a representação de algo por ela denominado como character, que é tanto uma personagem na obra quanto um traço fundamental da experiência humana materializado em um indivíduo real e percebido por um escritor. Em relação à própria geração, Woolf identifica a necessidade de rompimento com as convenções então vigentes do romance para que a forma possa, uma vez mais, estabelecer essa aproximação entre escritor, mundo e leitor centrada na representação do character. O conto analisado aprofunda essa discussão não necessariamente em seus temas, mas principalmente na instabilidade formal de seu narrador.
“Crises” e mutações do romance: um estudo de caso
Authors: Encinas Luis Fernando Catelan
Published: September 2020

O presente ensaio é uma pequena contribuição ao estudo do problema de certo romance contemporâneo, de sua forma, bem como dos signos por ele mobilizados, a fim de fornecer elementos para pensarmos as “crises” e mutações do romance (enquanto forma), a partir da análise da obra Almoço Nu (1959), do escritor norte-americano William S. Burroughs (1914-1997).