bluuebunny/crossref_metadata_2025_split huggingface dataset:
Haze removal network using unified function for image dehazing
Authors: Oh Hyungseok , Kim Hyena , Kim Yejin , Yim Changhoon 
Published: December 2020

AbstractThe atmospheric scattering model includes two crucial parameters for dehazing: global atmospheric light and the transmission map. Most previous dehazing methods need to obtain these two parameters separately, which makes dehazing a difficult and ill‐posed problem. Here, a new unified function that includes both the crucial parameters for haze removal is proposed. Then the haze removal network, which now needs to learn only one function during training, is proposed. Image dehazing can be performed as a simple addition of the haze removal function with the input hazy image. Experimental results show that the proposed method gives better subjective results for indoor and outdoor synthesized images as well as natural images compared to previous state‐of‐the‐art methods. Quantitative evaluation results show that the proposed haze removal network gives improved objective results compared with the same previous methods.
Feature‐clustering‐based single‐line‐to‐ground fault section location using auto‐encoder and fuzzy C‐means clustering in resonant grounding distribution systems
Authors: Gao Jian‐Hong , Guo Mou‐Fa , Shao Xiang , Chen Duan‐Yu 
Published: December 2020

AbstractMany sensors like digital fault indicators (DFIs) have been applied and promoted in distribution systems. The sensors can provide a technical mean for single‐line‐to‐ground (SLG) fault section location, but there are still some feature extraction and fault diagnosis problems. A novel SLG fault section location method utilizing auto‐encoder (AE) and fuzzy C‐means (FCM) clustering is presented in this work. Taking advantage of abundant information provided by DFIs, striking features can be extracted by the AE network, which is different from the artificially designed features that rely on prior knowledge. Compared with the learning‐based methods requiring massive training data, the proposed method only requires the data from one SLG fault. By applying the AE network to the zero‐sequence current measured by DFIs, the SLG fault section location's striking features could be obtained. Through feature classification by FCM clustering without setting threshold, the positional relationship between each detection node and the fault point would be distinguished to locate the fault section. Considering the abnormal communication of DFIs, the experiment proves that the proposed method can work effectively under various fault conditions.
Joint use of DSRC and C‐V2X for V2X communications in the 5.9 GHz ITS band
Authors: Ansari Keyvan 
Published: December 2020

AbstractVehicular communications networks form the backbone of cooperative intelligent transport systems to support road safety and infotainment applications amongst users. IEEE 802.11p of the Dedicated Short‐Range Communications protocol stack has been the technology of choice for Vehicle‐to‐Everything communications within the United States and Japan and has been extensively trailed in other countries such as Australia. With the advent of cellular technologies, a new, competing cellular‐based Device‐to‐Device technology, known as Cellular Vehicle‐to‐Everything Sidelink, has emerged. Considering both technologies suffer from performance limitations, there is a current debate as to which of these technologies will eventually dominate the cooperative intelligent transport systems landscape if they cannot coexist. To investigate mechanisms of spectrum sharing between Dedicated Short‐Range Communications and Cellular Vehicle‐to‐Everything for deployment in a common region, this paper initially reviews the background and technicalities of both technologies. The paper subsequently sets forth Vehicle‐to‐Everything platform models that allow not only spectrum sharing at the ITS band but also concurrent and simultaneous propagations of Dedicated Short‐Range Communications and Cellular Vehicle‐to‐Everything messages. The transmission and reception mechanisms of hybrid Vehicle‐to‐Everything platforms are verified through a describing function model.
Preparation and magnetic properties of MnBi alloy and MnBi /Fe hybrid magnets
Authors: Li Chunhong , Guo Donglin , Zeng Wen , Zhang Mingyuan , Xu Banghong 
Published: December 2020

AbstractMnBi alloys were prepared using arc melting with different atomic proportions between Mn and Bi and then heated at 573 K for 30 h. MnBi /Fe hybrid magnets were also prepared by modulating MnBi content. The microstructure evolution, the content of ferromagnetic low temperature phase MnBi, and the magnetic properties of MnBi alloys and MnBi /Fe hybrid magnets were studied systematically. Results showed that the composition and heat treatment had obvious influences on the saturation magnetization of MnBi alloy, where the saturation magnetization increased quickly following the heat treatment. The saturation magnetization initially increased and then decreased with increasing the content of Mn, which was consistent with the change of mass percentage of the LTP MnBi. The MnBi alloy with 50 at% Mn exhibited maximum magnetization as 62.0 emu/g with 30 KOe applied field at 300 K. The ratio of the content between Fe and MnBi had a remarkable effect on the magnetic performance. The saturation magnetization of MnBi/Fe hybrid magnets increased obviously with increasing the content of Fe. Meanwhile, the coercivity of the composite magnet increased dramatically with increasing the content of MnBi.
A new boost switched capacitor seven‐level grid‐tied inverter
Authors: Gao Yang , Zhang Weichi , Naderi Zarnaghi Yahya , Vosoughi Kurdkandi Naser , Zhang Chenming 
Published: December 2020

AbstractIn this paper, a new switched capacitor‐based multilevel inverter structure is suggested. The proposed topology can generate seven‐level output voltage waveform using ten power electronic switches and two floating capacitors. This structure has the ability to boost the input DC voltage, up to 1.5 times. Although this topology can generate an output waveform with large number of levels, it does not increase the voltage stress on the power electronic switches. There is no need for capacitor voltage balancing in this structure since the capacitors are balanced through charging and discharging modes of operation. In addition, the suggested switched capacitor inverter reduces the number of input dc power supplies and uses a single dc source such as a photovoltaic (PV) panel. Since the proposed inverter is an neutral point clamp based multilevel inverter topology, the leakage current is minimized and as a result the overall efficiency of the proposed system is increased. The operation modes and steady‐state analysis of the proposed structure are explained in detail. In order to validate the feasibility of the proposed topology, some experimental results are presented in the grid connected mode of operation.
Discrete time model based multiple paths full feedforward control for three‐phase inverter with output transformer
Authors: Lin Bowei , Peng Li , Wang Xuefeng , Liu Xinmin , Li Yaqing 
Published: December 2020

AbstractIn a high‐power three‐phase voltage source inverter, a step‐up transformer may be used at the output of the LC filter to achieve higher output voltage, improve electromagnetism compatibility and serve as output inductor under parallel operation. However, under standalone operation, the performance of the inverter is degraded since the feedback control does not include the output voltage of the transformer. This paper proposes a multiple paths load current full feedforward control designed in discrete time domain to improve the performance of the inverter. The proposed full feedforward controller has a concise expression due to multiple feedforward paths, and it is easy to fit in other control structures. Additionally, direct analysis in discrete time domain offers an accurate approach to investigate the relationships of the variables, and the improper fractions in the full feedforward controller can be handled with fewer trade‐offs. A lower output impedance is achieved eventually. MATLAB/Simulink is used to present the handling of advance operator z, ringing phenomenon and transformer dynamic. Experiments of a TMS320F28335 processor based 75 kVA three‐phase inverter with output transformer prove that the proposed controller can further improve the dynamic and steady‐state performance of the inverter under linear and nonlinear loads.
Complete Sternal Cleft Repair
Authors: Harijee Ankita , Vijayaraghavan Sundeep , Marathi Arjun Reddy , Kottayil Brijesh Parayaru , Kappanayil Mahesh , Bayya Praveen Reddy , Jayashankar Jessin P 
Published: December 2020

Abstract
Sternal cleft (SC) is a rare congenital malformation which can be partial or complete.We report a case of complete SC in a 9-month-old child. Our technique involves a combination of reinforcement with the deep cervical fascial extension, followed by the anterior perichondrial flaps, bridged with the rib graft, incorporating surplus resected cartilaginous xiphoid process, and covered with the bilateral pectoralis major muscle flap for the chest wall reconstruction with 3D printing assisting preoperative planning. The size of the defect in relation to the age of presentation was a deciding factor in the adoption of this alternative surgical technique.
Can the Choice of Radiotherapy Delivery Technique Influence Which Target Delineation Protocol to Use? A Plan-Quality-Based Analysis in Left Breast Cancer
Authors: Ahmad Irfan , Chufal Kundan Singh , Bhatt Chandi Prasad , Miller Alexis Andrew , Bajpai Ram , Chowdhary Rahul Lal , Pahuja Anjali Kakria , Chhabra Akanksha , Gairola Munish 
Published: December 2020

Introduction This study investigates the optimal target delineation protocol stratified by treatment planning technique in patients undergoing whole breast radiotherapy after breast conservation surgery.
Materials and Methods Target delineation using Tangent (RTOG 0413 Whole Breast Irradiation Protocol), European SocieTy for Radiotherapy and Oncology (ESTRO), and Radiation Therapy & Oncology Group (RTOG) guidelines was performed on 10 randomly selected treatment planning computed tomography datasets of patients with left-sided breast cancer. An objective plan quality metric (PQM) scoring schema was defined and communicated to the medical physicist prior to commencement of treatment planning. Treatment planning was performed using field-in-field (FiF) intensity modulated radiotherapy technique (IMRT), inverse IMRT, and volumetric modulated arc therapy (VMAT), for each type of target. Two-way repeated measures, analysis of variance was utilized to compare the total PQM scores and dosimetric variables, stratified by treatment planning method.
Results Total PQM score of plans for FiF, IMRT, and VMAT revealed that Tangent and ESTRO delineations were equivalent regardless of planning technique (Tangent vs. ESTRO for FiF, p = 0.099; Tangent vs. ESTRO for IMRT, p = 0.029; Tangent vs. ESTRO for VMAT, p = 0.438). Both delineation protocols were significantly superior to RTOG for all treatment planning techniques.
Conclusion For all treatment planning techniques, ESTRO and Tangent delineation were equivalent and both achieved significantly higher scores than RTOG delineation.
Einstein Poisson warped product space
Authors: Pal Buddhadev , Kumar Pankaj 
Published: December 2020

Abstract
In this paper, we provide some results on Poisson manifold (M, Π) with contravariant Levi–Civita connection

D

associated to pair (Π, g). We introduce the notion of Einstein Poisson warped product space (M = B ×
f

F, Π, g

f
) (where Π = Π1 + Π2). Moreover, we show that if M is an Einstein Poisson warped product space with nonpositive scalar curvature and compact base B, J
1 is a field endomorphism on T*B satisfies

J

1

2

=
I

, then M is simply a Riemannian Poisson product. For a contravariant Lorentzian Poisson warped space (M = B ×
f

F, g, Π) (where

B
=
I
×
R

) one can determine contravariant Einstein equations and the cosmological constant Λ corresponding to the contravariant Einstein equation G = −Λg. Moreover, it is shown that Einstein equation G = −Λg, induces the contravariant Einstein equation

G

F

i
j

=
−

Λ

F

g

F

i
j

with cosmological constant Λ
F
on fiber space (F, g

F
, Π
F
).
Inverse problem for the Schrödinger equation with non-self-adjoint matrix potential
Authors: Avdonin S A , Mikhaylov A S , Mikhaylov V S , Park J C 
Published: December 2020

Abstract
We consider the dynamical system with boundary control for the vector Schrödinger equation on the interval with a non-self-adjoint matrix potential. For this system, we study the inverse problem of recovering the matrix potential from the dynamical Neumann-to-Dirichlet operator. We first provide a method to recover spectral data for the Schrödinger system and consequently prove controllability of the system. We then develop a strategy for solving the inverse problem using this method with other techniques of the boundary control method.
Clustering-based particle detection method for digital holography to detect the three-dimensional location and in-plane size of particles
Authors: Huang Jianqing , Li Shen , Zi Yabo , Qian Yong , Cai Weiwei , Aldén Marcus , Li Zhongshan 
Published: December 2020

Abstract
Digital holography (DH) has been extensively applied in particle field measurements due to its promising ability to simultaneously provide the three-dimensional location and in-plane size of particles. Particle detection methods are crucial in hologram data processing to determine particle size and particle in-focus depth, which directly affect the measurement accuracy and robustness of DH. In this work, inspired by clustering algorithms, a new clustering-based particle detection (CBPD) method was proposed for DH. To the best of our knowledge this is the first time that clustering algorithms have been applied in processing holograms for particle detection. The results of both simulations and experiments confirmed the feasibility of our proposed method. This data-driven method features automatic recognition of particles, particle edges and background, and accurate separation of overlapping particles. Compared with seven conventional particle detection methods, the CBPD method has improved accuracy in measuring particle positions and displacements.
Nanoscale flexible Ag grating/AuNPs self-assembly hybrid for ultra-sensitive sensors
Authors: Dong Jun , Cao Yi , Han Qingyan , Gao Wei , Li Tuo , Qi Jianxia 
Published: December 2020

Abstract
In this paper, Au nanoparticles (AuNPs) are prepared using wet chemical reduction transfer of dense AuNPs film by self-assembly to the surface of Ag grating, which is inverted from the inner DVD after evaporation. The Ag grating/AuNPs self-assembly hybrid substrate commonly used in surface-enhanced Raman scattering (SERS) research is produced. The coupling effect between AuNP-AuNP and AuNPs-Ag slugs can evidently enhance the local electric field. Experimental results show that the hybrid SERS substrate can detect 10−9 M Rh6G, and the enhancement factor reaches 4.4 × 105. This small, cheap hybrid substrate has enormous potential in the field of SERS sensing.
Enhancement of quantum synchronization via continuous measurement and feedback control
Authors: Kato Yuzuru , Nakao Hiroya 
Published: December 2020

Abstract
We study synchronization of a quantum van der Pol oscillator with a harmonic drive and demonstrate that quantum synchronization can be enhanced by performing continuous homodyne measurement on an additional bath linearly coupled to the oscillator and applying feedback control to the oscillator. The phase coherence of the oscillator is increased by reducing quantum fluctuations via the continuous measurement, whereas the measurement backaction inevitably induces fluctuations around the phase-locking point. We propose a simple feedback policy for suppressing measurement-induced fluctuations by adjusting the frequency of the harmonic drive, which results in enhancement of quantum synchronization. We further demonstrate that the maximum enhancement of quantum synchronization is achieved by performing quantum measurement on the quadrature angle at which the phase diffusion of the oscillator is the largest and the maximal information on the oscillator phase is extracted.
Prospects for the use of “smart” pipe in pressurized water systems in the aspect of effective water resources management
Authors: Lutovac M , Srbinoski S , Popova O V , Lutovac B 
Published: December 2020

Abstract
The development of water management in the context of global water shortages and, at the same time, the increased demand of the population and industry for water requires new innovative solutions that will ensure a stable supply of the population, industry, agriculture and energy with the required amount of water. The main and indispensable elements for ensuring the supply of the required amount of water are pipes that are installed in pressure systems. The current types of pipes used in the water industry cannot constantly track trends in the distribution of the amount of water, which change over 24 hours and 365 days. This article will introduce a new concept for the development of pipes used in pressure systems that will increase the performance of water systems and provide significant savings in clean water.
Statistical processing of the obtained data moment of inertia of the chopper soaked soybeans
Authors: Frolov V Yu , Klasner G G , Spiridonov A M 
Published: December 2020

Abstract
The paper presents experimental studies to determine the moment of inertia of the moving disk of the grinding device. A method was used to determine the flywheel masses and moment of inertia from the «Vybega» curve. To determine the mechanical characteristics of the grinder, the method of a calibrated collector machine of alternating current was used. The mechanical characteristics of the grinder are obtained depending on the size of the abrasive, the value of the angle of curvature of the grooves and the size of the gap between the working bodies of the device being developed. Regression analysis made it possible to estimate the value of the resistance moment of the grinding device at a given value of the abrasive value and speed.
The flow research in vane diffusers of centrifugal compressors transonic stages
Authors: Aksenov A , Fateeva E , Tuzova N , Zaytseva E , Poselennov V , Kozhukhov Y 
Published: December 2020

Abstract
Abstract. Computational fluid and gas dynamics methods are used at all stages of design, including blade machine design: from the creation of a schematic design to a detailed study of all the main units [1, 2]. The industries using refrigeration centrifugal compressors (oil refining, chemical, food) development requires the machines unit capacity, efficiency and reliability increase, the weight and size characteristics and metal consumption decrease. Since this machine type production often has a small-scale or individual character, and the needs for machine specified characteristics maintain during the entire service life exists, design remains an important stage in the creation process. This article is devoted to the possibility of validating the calculations using the numerical gas dynamics methods research. The centrifugal compressor end stage numerical and a full-scale research were made during the investigation; refrigeration centrifugal compressor end stage full-scale investigation carried out by D.A. Kapelkin was chosen as a base of the research [3]. As a result, the diffuser flow numerical simulation results were analyzed and the calculated and full-scale characteristics comparison was carried out. Recommendations for the numerical gas dynamics methods application are given in a particular case, applied to refrigeration centrifugal compressors vane diffusers gas-dynamic calculations.
Method of getting the composite fiber material with functional heat-resistant, heat-accumulating components
Authors: Cherunova I , Stefanova E , Radyuhina G 
Published: December 2020

Abstract
In the article research results are presented, which aim to development of an method of getting the composite fiber material with functional heat-resistant and/or heat-accumulating components. Their resources and prospects for their use are of interest for improving the clothing heat resistance by modifying the materials. A similar approach is relevant for technologies of protective clothing from the cold (modification of fibrous materials using heat-accumulating components). As a heat-resistant synthetic fiber, we considered the Kevlar fiber. For research and development, we selected a special fine fraction: pulp or PCM-capsules. As a fibrous basis for designing the new material, we considered a widely used fiber insulating material – Hollofiber. The method and scheme of the general layout of the method for modifying nonwoven fabric with fine aramid fiber - pulp or PCM are developed. The research results allowed us to find that the proportion of Kevlar in the insulating material equal to 30 ±3 g/cu.m virtually did not change the thickness, porosity, and density of the material pack (less than 1%), which indicates the constancy of the air volume, the presence of which determines the thermal resistance of the insulating material. The presented method has a similar application technology for PCM capsules, which are converted by standard fiber materials.
Methodology for optimizing the study of fire-retardant compositions for building materials and structures
Authors: Eremina Tatiana , Korolchenko Dmitrii , Portnov Fedor 
Published: December 2020

Abstract
In Russia, a large number of domestic and foreign fire-retardant materials are used to reduce fire danger when using metal and wooden structures in construction, as well as cable products. Regulatory instruments are used to assess these properties of fire-retardant materials, which do not allow for sufficient performance assessment. In this regard, the use of interdisciplinary research methods is proposed. The authors propose a wide range of research methods, as well as a methodological approach based on the separation of interdisciplinary methods into groups by scale of the research object (material). Based on the level-based division of the study, as well as an analysis of possible experimental methods at each level, it is proposed to optimize the study of the operational properties of building materials and fire retardants through the use of a compatibility chart. A practical example of how to use a compatibility chart is shown.
Glass structural elements and load-bearing glass structures
Authors: Balyakina Olga , Vasilyeva Olga , Smirnov Vitaly 
Published: December 2020

Abstract
This article provides an overview of scientific and technical literature on the design and calculation of load-bearing structures made of laminated glass. Since glass is one of the most fragile materials, additional control methods are required for the production, installation and operation of glass structures, because one small defect can reduce the strength of the entire structure several times. The analysis of multilayer glass, its calculation and design for use in construction is presented. The thickness, the number of layers, the presence and type of the intermediate layer, all this affects the strength characteristics of the entire glass structure. The problem of the lack of a Russian regulatory and technical base that would regulate the design of load-bearing glass elements, such as columns, beams, shells, etc.